CN100595404C - Stretching and anchoring device of single strand dragline under control stress for prestressing and installation method - Google Patents
Stretching and anchoring device of single strand dragline under control stress for prestressing and installation method Download PDFInfo
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- CN100595404C CN100595404C CN200810061797A CN200810061797A CN100595404C CN 100595404 C CN100595404 C CN 100595404C CN 200810061797 A CN200810061797 A CN 200810061797A CN 200810061797 A CN200810061797 A CN 200810061797A CN 100595404 C CN100595404 C CN 100595404C
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Abstract
The invention discloses a device for tensioning and anchoring an individual thread guy cable under low tensioning control stress and a method for installing the same. The device comprises a small-diameter individual thread guy cable with both ends respectively provided with a heading, tensioning and anchoring devices of two tensioning ends and a plurality of middle anchoring devices, wherein the individual thread guy cable has a length which ensures that the guy cable can continuously pass through a plurality of stand columns; and each middle anchoring device comprises an inner circle, an opening sleeve matched with the outer circle of the individual thread guy cable, a collar, a locking bolt and a structure preventing the looseness of a clamp nut. The installing method adopts long cable tensioning and respective anchoring. The device and the method can substantially increase the length of a guy cable tensioning unit and save equipment along with simple installation construction, higher work efficiency and lower cost.
Description
Technical field
The present invention relates to stretch-draw and anchor device and the mounting method thereof with the low stress drag-line such as a kind of stair or staircase, bridge or the connection of road air partition and other view or decoration etc., specifically is stretch-draw and the anchor device and the mounting method of monofilament drag-line under a kind of low control stress for prestressing.
Background technology
Drag-line is used very extensive in civil engineering.Drag-line generally is divided into two kinds, and a kind of is the structure stress drag-line, as drag-line in the suspension cable in the bridge engineering, suspension rod drag-line and the cladding glass braced structures etc.These drag-lines are as prestressed cable, and its control stress for prestressing is generally at 0.45f
Ptk～0.75f
Ptk(f in the scope
PtkBe drag-line Tensile strength standard value), so these drag-lines generally are in heavily stressed duty.The all existing lot of research of its tensioning equipment and anchor device and method for stretching thereof (technology), and have ripe product and application technology standard to follow.
Another kind of drag-line, the handrail drag-line of stair or staircase for example, bridge and road air partition be connected drag-line and some other ornamental drag-line that is provided with owing to architectural requirement etc., belong to the individual wire drag-line of minor diameter (diameter is generally less than 10mm) under the low control stress for prestressing of this class exactly, claim monofilament drag-line under the low control stress for prestressing usually.Because purposes difference, under normal condition, do not need very high control stress for prestressing, or even do not allow high control stress for prestressing, as bridge air partition drag-line if too high column distortion that then easily makes its support of stress or displacement etc., so its control stress for prestressing is generally less than 0.45f
Ptk, even less than 0.2f
PtkOr it is littler.But its anchoring system possesses the safety under the high-stress state again, and people's gravity, bridge air partition drag-line want to bear the goods that traffic accident may occur or the bump of manpower etc. when wanting to bear contingency as the drag-line of balustrade.
The hold concurrently anchor device of anchor device and interlude of the stretch-draw and the anchor device of monofilament drag-line under the low control stress for prestressing of prior art, the stretch-draw that comprises two stretch-draw ends.
Referring to Fig. 1, the hold concurrently structure of anchor device of the stretch-draw of its stretch-draw end is generally: the steel minor diameter monofilament drag-line 101 outer core through screw rod 103 that are with that are provided with heading are engaged in the hole of columns 100 such as stair, air partition, and are tightened up by the clamp nut 104 that screws on core through screw rod 103 and lay respectively at column 100 both sides.
The anchor device of the interlude then control stress for prestressing in view of the monofilament drag-line is very low, usually be stretching getting final product, so, its stretch-draw unit is generally shorter, as 40 meters long drag-lines of need, then adopt four monofilament drag-lines of more than 10 meter long, form the effect of whole drag-line by several stretch-draw unit connected modes, promptly interlude is also actual is the stretch-draw end.Concrete implement the general following two kinds of structures that adopt: referring to Fig. 2, a kind of stretch-draw unit for dislocation connects, and promptly interlude also is the stretch-draw anchor device of holding concurrently; Referring to Fig. 3, another kind of for adopting conventional drag-line connector 102 to connect.
There are following shortcoming in actual applications in the stretch-draw of monofilament drag-line and anchor device and mounting method under the low control stress for prestressing of above prior art:
1, when the anchor device of interlude adopts the stretch-draw unit of dislocation to connect, limited the length of drag-line stretch-draw unit, increased connection anchoring piece and engineering quantity thereof, its complex installation process, work efficiency is lower, has both increased the equipment cost and has also increased cost of labor, also influences attractive in appearance; And when adopting conventional drag-line connector to connect, limited the length of drag-line stretch-draw unit equally, particularly because of two sections stretch-draw effects that can influence each other in front and back when the drag-line stretching construction, so, must repeatedly regulate just and can reach the stretch-draw effect, increase engineering time and difficulty, its installation process is loaded down with trivial details equally, work efficiency is lower, and cost of labor is higher; Especially when drag-line length is longer, i.e. stretch-draw number of unit more for a long time, above shortcoming is more outstanding.
When 2, the clamp nut of using when the double as stretch-draw that is positioned at the end column outside and anchoring is tightened, core through screw rod is done axially to move laterally and is made the steel wire tension, because the steel wire heading is that the plane cooperates firmly with core through screw rod, its frictional resistance is bigger, so in the nut screwing clamping process, to to a certain degree drive core through screw rod and wire digging line rotates, wrench torque when this has not only increased fastening nut, increase difficulty of construction, and easily turned round the stress that changes drag-line because of drag-line, directly influence the safety and the application life of drag-line.
3, Yin Lasuo is under the low control stress for prestressing, and drag-line makes clamp nut and core through screw rod loosening easily under microseism or other reasons, and causes drag-line to connect losing efficacy as the drag-line no pulling force etc. that relaxes, and directly influences the normal use and the safety of drag-line.
Summary of the invention
The technical problem to be solved in the present invention is, a kind of length that can increase considerably drag-line stretch-draw unit is provided, saves equipment and installation is simple, improve work efficiency, the stretch-draw and the anchor device of monofilament drag-line under the low control stress for prestressing that reduces cost.
Technical scheme of the present invention is, the stretch-draw and the anchor device of monofilament drag-line under a kind of low control stress for prestressing with following structure are provided, comprise that two ends are respectively equipped with the minor diameter monofilament drag-line of heading, the stretch-draw of the two stretch-draw ends anchor device of holding concurrently: be located at respectively two stretch-draw ends be movably combined on the monofilament drag-line and part be arranged in the end leghole core through screw rod, be positioned at end column both sides and screw first clamp nut and second clamp nut on core through screw rod; It also comprises a plurality of middle anchor devices, and described monofilament drag-line has the length that continues to pass through many root posts; The split coupling that circle and monofilament drag-line cylindrical matched in described each middle anchor device comprised, center bore after split coupling closes up is less than the external diameter of monofilament drag-line, the axial centre of split coupling is positioned at the middle standing pillar hole, and stretching out respectively has one pair this split coupling is fastened on anchor ear and a plurality of fastening bolt on the monofilament drag-line outside the axial two ends of split coupling of middle standing pillar both sides.
As improvement, described in the middle of anchor device comprise that also two planes are fitted in the packing ring that is provided with outer male half coupling of middle standing pillar side and anchor ear end face respectively, described packing ring is a pair of, lays respectively at the middle standing pillar both sides and is enclosed within on the split coupling.
As further improvement, it comprises that also one at the every end of two stretch-draw ends is placed in the supporting anchor head on the monofilament drag-line between heading and the core through screw rod, and described supporting anchor head is concavo-convex arc surface with the end face that combines of core through screw rod.
As further improving, the supporting anchor head is the plane with the end face that combines between the heading.
As further improving again, two tangent planes that are parallel to each other are arranged on the excircle of the axial inner ends of described two core through screw rod, one shape of a hoof spline short screw promptly in hole shape and this end core through screw rod profile match and opening is arranged and at the spline short screw sliding fit that is provided with screw thread on its excircle on this end core through screw rod, the external screw thread of this spline short screw is the left-hand thread opposite with the hand of spiral of core through screw rod, is combined with stop nut on the external screw thread of this spline short screw.
As also further improving, the length of two tangent planes that are parallel to each other is on the described core through screw rod axial inner ends excircle: be no less than the width dimensions of twice end column from its length dimension of inner face of core through screw rod, also be not more than half of core through screw rod overall length dimension.
As also further improving again, be positioned on the core through screw rod of the first clamp nut inboard in the end column outside from clip end column lateral wall to being provided with plain washer and spring washer successively away from end column lateral wall, described plain washer is fastened on the lateral wall of end column, described plain washer has two loosening spline limits of anti-first clamp nut of 90 ° of flipping to the outside, and two relative parallel edges of first clamp nut are close on described two spline limits; Be positioned on the core through screw rod of the second clamp nut inboard of end column inboard from clip end column inside wall to the spline short screw and the stop nut that are provided with plain washer successively, screw mutually away from end column inside wall, described plain washer is fastened on the inboard of end column, there are two loosening spline limits of anti-stop nut of 90 ° of overturning to the inside at the edge of described plain washer, and two relative parallel edges of stop nut are close on described spline limit.
Another technical problem that the present invention will solve is, provide a kind of installation simple, improve work efficiency, the stretch-draw of monofilament drag-line and the mounting method of anchor device under the low control stress for prestressing that reduces cost.
The technical scheme that the present invention solves another technical problem is, the stretch-draw of monofilament drag-line under a kind of low control stress for prestressing and the mounting method of anchor device are provided, and it comprises following processing step:
1., an end of monofilament drag-line is upset out earlier heading, penetrate the supporting anchor head, core through screw rod, a plurality of split coupling of this stretch-draw end successively, penetrate the core through screw rod and the supporting anchor head of another stretch-draw end again, the heading of again other end of monofilament drag-line being upset out forms the basic assembly of drag-line;
2., with the monofilament drag-line of a stretch-draw end and heading and cover thereon the supporting anchor head and core through screw rod from the outside to the inboard hole of passing this stretch-draw end end column, the spline short screw and the stop nut and second clamp nut that from left to right be inserted in plain washer successively in this end column inboard, screw mutually; Pass the hole of a plurality of middle standing pillars again and simultaneously respectively put a packing ring on the monofilament drag-line of each middle standing pillar both sides being positioned at; To another stretch-draw end end column inboard, spline short screw that be inserted in second clamp nut successively again, screws mutually and stop nut, plain washer, and with this monofilament drag-line and heading and cover supporting anchor head and the core through screw rod hole of passing this stretch-draw end end column from the inboard to the outside thereon;
3., successively on the lateral wall that is inserted in and plain washer is fastened on the end column on the core through screw rod in the two stretch-draw end end columns outsides, be inserted in spring washer, screw on and turn first clamp nut, meanwhile make temporary fixed of spanner at two parallel cut surface places of the inboard core through screw rod of stretch-draw end end column, when not tightened because of first clamp nut, core through screw rod rotates, progressively tighten first clamp nut and end, again the edge of plain washer is flipped to the outside into two parallel spline limits of 90 ° anti-first nut loosening until the control stress for prestressing of monofilament drag-line to regulation;
4., be inserted in and plain washer be fastened on the inside wall of end column on the core through screw rod of two stretch-draw end end column inboards, tighten stop nut, tighten second clamp nut again to compress spline short screw and stop nut, again the edge of plain washer is turned into to the inside two loosening parallel spline limits of anti-stop nut of 90 °;
5., be installed in middle anchor device on the middle standing pillar one by one: be enclosed within split coupling on the monofilament drag-line and make it axially be positioned at the hole of middle standing pillar in the middle part, with two packing rings respectively near the two sides of middle standing pillar, end face with two pairs of anchor ears pushes against two packing rings, successively two pairs of anchor ears is tightened up with a plurality of fastening bolts again;
Or step 2. after,
With the middle standing pillar of the middle of monofilament drag-line length overall or near the middle standing pillar of the monofilament drag-line length overall middle end that fixes, be enclosed within split coupling on the monofilament drag-line and make it axially be positioned at the hole of middle standing pillar in the middle part, with two packing rings respectively near the two sides of middle standing pillar, end face with two pairs of anchor ears pushes against two packing rings, successively two pairs of anchor ears is tightened up with a plurality of fastening bolts again;
Continue again completing steps 3.～step 5..
After adopting above structure and method, the stretch-draw of monofilament drag-line is compared with above prior art with anchor device and mounting method under the low control stress for prestressing of the present invention, has following remarkable advantage and beneficial effect:
1, because monofilament drag-line of the present invention has the length that continues to pass through many root posts, adopt the structure of middle anchor device of the present invention in addition, like this, just can long cable stretching, anchoring respectively, obviously increased the length of monofilament drag-line stretch-draw unit, simplified installation process, improved work efficiency, construction period is shortened, and saved equipment, reduced material cost and cost of labor significantly.But also make the whole neat appearance of apparatus of the present invention.
Especially if adopt earlier the middle standing pillar or the end that fixes on the middle standing pillar near monofilament drag-line length overall middle that anchor device in the middle of is installed in the middle of monofilament drag-line length overall, when carrying out stretch-draw two stretch-draw ends again and the processing step of other anchor device being installed, about one times of monofilament drag-line length overall be can increase, above advantage and more remarkable effect made.
2, because the every end of two stretch-draw ends of the present invention increases the supporting anchor head on the monofilament drag-line of being located between heading and the core through screw rod, described supporting anchor head is concavo-convex arc surface with the end face that combines of core through screw rod, when the clamp nut of using when double as stretch-draw and anchoring is tightened, just make original plane hard friction become pivoting friction, promptly become circular arc pivoting friction between core through screw rod and the supporting anchor head by plane hard friction between original heading and the core through screw rod, this has not only reduced the wrench torque when tightening clamp nut, and the resistance of clamp nut when being tightened greatly reduces, reduce significantly or avoided driving the phenomenon that the issuable torsional interaction of drag-line steel wire changes the steel wire stress because of tightening clamp nut, reduced difficulty of construction, effectively ensure the safety of monofilament drag-line, prolonged the application life of apparatus of the present invention.
3, though monofilament drag-line of the present invention still is under the low control stress for prestressing, be subject to the interference of microseism or other reasons, but because the present invention is except that adopting spring washer, also be provided with the spline packing ring, shape of a hoof spline short screw and the left-hand thread stop nut that matches with it, the effective measures of nut loosening have been taked to prevent from many aspects, so, the present invention has avoided making nut and the loosening phenomenon of core through screw rod because of microseism or other reasons fully, the stretch-draw of monofilament drag-line under the low control stress for prestressing of the present invention and the functional reliability of anchor device have been ensured effectively, continuity and the safety used have further prolonged the application life of apparatus of the present invention.
Description of drawings
Fig. 1 is the hold concurrently sectional structure schematic diagram of anchor device of the stretch-draw end stretch-draw of minor diameter steel monofilament drag-line under the low control stress for prestressing of prior art.
Fig. 2 is the structural representation that the drag-line stretch-draw of minor diameter steel monofilament and anchor device adopt unit dislocation connected mode under the low control stress for prestressing of prior art.
Fig. 3 is the structural representation (Fig. 1, Fig. 2, Fig. 3 illustrate in background technology that the following specific embodiment is no longer mentioned) that the drag-line stretch-draw of minor diameter steel monofilament and anchor device adopt the connector connected mode under the low control stress for prestressing of prior art.
Fig. 4 is the overall structure schematic diagram of minor diameter (steel) monofilament drag-line stretch-draw and anchor device under the low control stress for prestressing of the present invention.
Fig. 5 is the hold concurrently sectional structure schematic diagram of anchor device of the stretch-draw of the stretch-draw end of the drag-line stretch-draw of minor diameter monofilament and anchor device under the low control stress for prestressing of the present invention.
Fig. 6 is the sectional structure schematic diagram along the A-A line among Fig. 5.
Fig. 7 is the sectional structure schematic diagram along the B-B line among Fig. 5.
Fig. 8 is the structural representation of the plain washer (spline packing ring) of the stretch-draw end of the drag-line stretch-draw of minor diameter monofilament and anchor device under the low control stress for prestressing of the present invention.
Fig. 9 is the sectional structure schematic diagram of the middle anchor device of the drag-line stretch-draw of minor diameter monofilament and anchor device under the low control stress for prestressing of the present invention.
Figure 10 is to be the sectional structure schematic diagram of D-D line along the C-C line among Fig. 9.
Figure 11 is the half section structure enlarged diagram when the middle anchor device of the drag-line stretch-draw of minor diameter monofilament and anchor device tightens up under the low control stress for prestressing of the present invention.
Figure 12 is to structural representation along the E among Figure 10.
Shown in the figure
The component of prior art: 100, column, 101, the monofilament drag-line, 102, connector, 103, core through screw rod, 104, clamp nut;
Component of the present invention; 1, monofilament drag-line, 1.1, heading, 2, supporting anchor head, 3, core through screw rod, 4, first clamp nut, 5, spring washer, 6, plain washer, 7, plain washer, 8, spline short screw, 9, stop nut, 10.1, the end column, 10.2, middle standing pillar, 11, second clamp nut, 12, packing ring, 13, anchor ear, 14, fastening bolt, 15, split coupling.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
As Fig. 4, Fig. 5, Fig. 6, Fig. 7, shown in Figure 8.
The stretch-draw and the anchor device of monofilament drag-line under the low control stress for prestressing of the present invention, comprise that two ends are respectively equipped with the minor diameter monofilament drag-line 1 of heading 1.1, described minor diameter refers generally to 10mm following (comprising 10mm), the material of monofilament drag-line 1 generally adopts steel, promptly generally claims steel minor diameter monofilament drag-line.Described monofilament drag-line 1 has the length that continues to pass through many root posts, column as stair or staircase, bridge or the connection of road air partition and other view or decoration etc. is every 10 meters one, monofilament drag-line 1 then of the present invention can be 40 meters and adds the length that fastening usefulness is reserved at two ends, maybe can be 80 meters and add the length that fastening usefulness is reserved at two ends, certainly, can also be other sizes.Described column comprises that end column 10.1 is the column and the middle standing pillar 10.2 at two ends.Described middle standing pillar 10.2 comprises the middle standing pillar of establishing anchor device and the middle standing pillar of not establishing anchor device again.The middle standing pillar of not establishing anchor device generally adopts and is with rubber or plastics split coupling embeds structure in the hole of the middle standing pillar of not establishing anchor device on monofilament drag-line 1.Because of not establishing the middle standing pillar of anchor device and rubber or plastics split coupling is not the scope that the present invention will protect, so, not shown, also describe in the following literal.
The present invention also comprises the stretch-draw of the two stretch-draw ends anchor device (stretch-draw that Fig. 5 the illustrates head end anchor device of holding concurrently of holding concurrently, the hold concurrently structure of anchor device of anchor device and head end stretch-draw is identical and the stretch-draw of tail end is held concurrently, only direction is just in time opposite), its structure is as follows: be located at respectively two stretch-draw ends be movably combined on the monofilament drag-line 1 and part is arranged in the core through screw rod 3 of end column 10.1 hole (not shown)s, be positioned at end column 10.1 both sides and screw first clamp nut 4 and second clamp nut 11 on core through screw rod 3; Supporting anchor head 2 on monofilament drag-line 1 that is placed between heading 1.1 and the core through screw rod 3 of the every end of two stretch-draw ends.Described supporting anchor head 2 is concavo-convex arc surface with the end face that combines of core through screw rod 3, and this end face that generally is core through screw rod 3 is a concaved circular cambered surface, and this end face of supporting anchor head 2 is a convex arc surface.Supporting anchor head 2 is the plane with the end face that combines between the heading 1.1.Two tangent planes that are parallel to each other are arranged on the excircle of the axial inner ends of described core through screw rod 3.The axial length of two tangent planes that are parallel to each other is generally on the described core through screw rod 3 axial inner ends excircles: the width dimensions that is no less than twice end column 10.1 from its length dimension of inner face of core through screw rod 3, after guaranteeing 1 elongation of monofilament drag-line, the tangent plane position of core through screw rod 3 still the end column 10.1 the inboard, thereby make following spline short screw 8 and stop nut 9 compress better effects if; Also be not more than half of core through screw rod 3 overall length dimension, after guaranteeing 1 elongation of monofilament drag-line, the tangent plane position of core through screw rod 3 still is no more than the outer wall of end column 10.1, so that first clamp nut 4 can all be in the circumferential thread section, thereby makes its stretch-draw and anchoring dynamics better.From general knowledge as can be known, there is not screw thread on these two tangent planes that are parallel to each other.One shape of a hoof spline short screw 8 promptly in hole shapes and this end core through screw rod 3 profiles match and opening is arranged and at threaded spline short screw 8 sliding fits of its cylindrical on this end core through screw rod 3, the external screw thread of this spline short screw 8 is the left-hand thread opposite with the hand of spiral of core through screw rod 3, and promptly the external screw thread of spline short screw 8 is opposite with the hand of spiral of core through screw rod 3.Be combined with stop nut 9 on the external screw thread of this spline short screw 8, according to general knowledge as can be known, the screw thread on the stop nut 9 is similarly left-hand thread.On the core through screw rod 3 of described first clamp nut 4 inboards from clip end column 10.1 lateral walls to being to be provided with plain washer 6 and spring washer 5 Fig. 5 from right to left away from end column 10.1 lateral walls.Described plain washer 6 tightens up as present embodiment and is fastened on the lateral wall of end column 10.1 by a pair of dormant bolt (unlabelled hole only is shown among Fig. 8, and not shown dormant bolt).The edge of described plain washer 6 has two to be the loosening spline limit of anti-first clamp nut 4 of 90 ° of left side upsets among Fig. 5 laterally, and two relative parallel edges of first clamp nut 4 are close on described spline limit.On the core through screw rod 3 of described second clamp nut 11 inboards from clip end column 10.1 inside walls to the spline short screw 8 and the stop nut 9 that are provided with plain washer 7 successively, screw mutually away from end column 10.1 inside walls (Fig. 5 from left to right).(plain washer 7 is identical with plain washer 6 structures for described plain washer 7, so not shown) fastening as present embodiment by a pair of dormant bolt be fastened on the end column 10.1 inside wall on, there is the loosening spline limit of the anti-stop nut 9 of 90 ° of two (among Fig. 5 to the right) upsets to the inside at the edge of described plain washer 7, and stop nut 9 corresponding two parallel edges are close on described spline limit.
After adopting above structure, when first clamp nut 4 was tightened, it is also outwards mobile that core through screw rod 3 just moves and drive supporting anchor head 2 and heading 1.1 laterally, and then tension monofilament drag-line 1 reaches the stretch-draw purpose.First clamp nut 4 is tightened under moment loading, also may drive core through screw rod 3 rotates, but because supporting anchor head 2 is the circular arc type curved surface with core through screw rod 3 contact surfaces, just make original plane hard friction become pivoting friction, promptly become circular arc pivoting friction between core through screw rod 3 and the supporting anchor head 2 by plane hard friction between original heading 1.1 and the core through screw rod 3, nature, resistance when first clamp nut 4 is tightened just greatly reduces, monofilament drag-line 1 is subjected to the state of pulling force the possible state of being turned round also can not occur, can effectively alleviate difficulty of construction, improve work efficiency, guarantee that drag-line is stressed rationally.Simultaneously, spline short screw 8 and stop nut 9 adopt the left-hand thread opposite with the hand of thread spiral of core through screw rod 3, also be first clamp nut 4 and stop nut 9 and the core through screw rod 3 tight measures of further guaranteeing: when core through screw rod 3 when first clamp nut 4 clockwise rotates, must drive spline short screw 8 also will clockwise rotate, and stop nut 9 also will clockwise rotate if rotate, because the hand of thread spiral of spline short screw 8 and stop nut 9 is counterclockwise, stop nut 9 was pressed on the plain washer 7 and can not rotates again this moment, so stop nut 9 can not change by the another mistake hour hands, and the spline assembly that spline short screw 8 and stop nut 9 formed is fixed by second clamp nut, 11 axial compression on core through screw rod 3, thereby first clamp nut 4 and stop nut 9 and core through screw rod 3 is played the effect of locking spline.
The stretch-draw of monofilament drag-line and anchor device also comprise a plurality of middle anchor devices under the low control stress for prestressing of the present invention.The split coupling 15 that circle and monofilament drag-line 1 cylindrical matched in described each middle anchor device comprised, center bore after split coupling 15 closes up is less than the external diameter of monofilament drag-line 1, in other words, after split coupling 15 is pressed on the monofilament drag-line 1, split coupling 15 openings radially between still gapped, be generally 1～2mm.The axial centre of split coupling 15 is positioned at middle standing pillar 10.2 holes, stretches out that outside the axial two ends of split coupling 15 of middle standing pillar 10.2 both sides one pair of anchor ear 13 and a plurality of present embodiment that this split coupling 15 is fastened on the monofilament drag-line 1 to be arranged respectively be four fastening bolts 14.Anchor device comprises that also its two plane is fitted in the packing ring that is provided with outer male half coupling 12 of middle standing pillar 10.2 sides and anchor ear 13 end faces respectively in the middle of each.Described packing ring 12 is a pair of, lays respectively at the both sides of middle standing pillar 10.2.Middle standing pillar 10.2 of the present invention is meant other column except that each end column 10.1 of head and the tail two ends.Anchor device is fastened on split coupling 15 on the monofilament drag-line 1 and the end face of anchor ear 13 supports to the two side of each middle standing pillar 10.2 and stops monofilament drag-line 1 to move axially, the effect of anchoring in the middle of reaching by anchor ear 13 through fastening bolt 14 in the middle of of the present invention.
The stretch-draw of monofilament drag-line and the mounting method of anchor device under this low control stress for prestressing comprise following processing step:
1., monofilament drag-line 1 put the part of the diameter of tensioning equipment and anchor device less than column 10.1,10.2 apertures, and, form the basic assembly of drag-line with the two ends of monofilament drag-line 1 heading 1.1 of upsetting out;
2., the basic assembly of drag-line is passed the end column 10.1 of end column 10.1, a plurality of middle standing pillar 10.2 and the tail stretch-draw end of first stretch-draw end in proper order, meanwhile with the diameter of tensioning equipment and anchor device greater than the ring-shape accessory in column aperture and nut sleeve in the inboard of pairing two ends column 10.1 and the both sides of middle standing pillar 10.2;
3., at 10.1 outside tensionings of two stretch-draw end end columns and the fastening stretch-draw anchor device of holding concurrently;
4., at two stretch-draw end end columns, 10.1 inboard securing attachments fixing apparatus;
5., middle anchor device is installed on the middle standing pillar 10.2 successively;
Or step 2. after,
Anchor device in the middle of one is installed in the middle standing pillar 10.2 or the end that fixes on the middle standing pillar 10.2 near monofilament drag-line 1 length overall middle of the middle of monofilament drag-line 1 length overall, continue again completing steps 3.～step 5..
The concrete operations of above-mentioned steps are as follows:
1., an end of monofilament drag-line 1 is upset out earlier heading 1.1, penetrate the supporting anchor head 2, core through screw rod 3, a plurality of split coupling 15 of this stretch-draw end successively, penetrate the core through screw rod 3 and the supporting anchor head 2 of another stretch-draw end again, the heading 1.1 of again other end of monofilament drag-line 1 being upset out forms the basic assembly of drag-line;
2., with the monofilament drag-line 1 of a stretch-draw end and heading and cover thereon supporting anchor head 2 and core through screw rod 3 from the outside to the inboard hole of passing this stretch-draw end end column 10.1, the spline short screw 8 that from left to right be inserted in plain washer 7 successively in these end column 10.1 inboards, screws mutually and the stop nut 9 and second clamp nut 11; Pass the hole of a plurality of middle standing pillars 10.2 again and on the monofilament drag-line 1 that is positioned at each middle standing pillar 10.2 both sides, respectively put a packing ring 12 simultaneously; To another stretch-draw end end column 10.1 inboards, be inserted in second clamp nut 11, the spline short screw 8 that screws mutually and stop nut 9, plain washer 7 more successively, and with this monofilament drag-line 1 and heading 1.1 and cover supporting anchor head 2 and core through screw rod 3 hole of passing this stretch-draw end end column 10.1 from the inboard to the outside thereon;
3., be inserted in and plain washer 6 be fastened on the lateral wall of end column 10.1 on the core through screw rod 3 in two stretch-draw end end columns, 10.1 outsides successively, be inserted in spring washer 5, screw on and turn first clamp nut 4, meanwhile make temporary fixed of spanner at two parallel cut surface places of stretch-draw end end column 10.1 inboard core through screw rod 3, when not tightened because of first clamp nut 4, core through screw rod 3 rotates, progressively tighten first clamp nut 4 and end (measuring its stretching force with commercially available drag-line dynamometer is control stress for prestressing) to the control stress for prestressing of stipulating, again the edge of plain washer 6 is flipped to the outside into 90 ° two the parallel spline limits that first clamp nut 4 becomes flexible of preventing until monofilament drag-line 1;
4., be inserted in and plain washer 7 be fastened on the inside wall of end column 10.1 on the core through screw rod 3 of two stretch-draw end end columns, 10.1 inboards, tighten stop nut 9, tighten second clamp nut 11 again to compress spline short screw 8 and stop nut 9, again the edge of plain washer 7 is turned into to the inside two loosening parallel spline limits of anti-stop nut 9 of 90 °;
5., middle anchor device is installed on the middle standing pillar 10.2 one by one: be enclosed within split coupling 15 on the monofilament drag-line 1 and make it axially be positioned at the hole of middle standing pillar 10.2 in the middle part, with two packing rings 12 respectively near the two sides of middle standing pillar 10.2, end face with two pairs of anchor ears 13 pushes against two packing rings 12, is that four fastening bolts 14 of one pair of anchor ear, 13 usefulness tighten up two pairs of anchor ears 13 successively with a plurality of present embodiments again;
Or step 2. after, with the middle standing pillar 10.2 of the middle of monofilament drag-line 1 length overall or near the middle standing pillar 10.2 of the monofilament drag-line 1 length overall middle end that fixes, be enclosed within split coupling 15 on the monofilament drag-line 1 and make it axially be positioned at the hole of middle standing pillar 10.2 in the middle part, with two packing rings 12 respectively near the two sides of middle standing pillar 10.2, end face with two pairs of anchor ears 13 pushes against two packing rings 12, successively two pairs of anchor ears 13 is tightened up with a plurality of fastening bolts 14 again; Continue again completing steps 3.～step 5..Complete being expressed as follows of this section meaning, mounting method promptly of the present invention also can adopt following concrete operations:
1., an end of monofilament drag-line 1 is upset out earlier heading 1.1, penetrate the supporting anchor head 2, core through screw rod 3, a plurality of split coupling 15 of this stretch-draw end successively, penetrate the core through screw rod 3 and the supporting anchor head 2 of another stretch-draw end again, the heading 1.1 of again other end of monofilament drag-line 1 being upset out forms the basic assembly of drag-line;
2., with the monofilament drag-line 1 of a stretch-draw end and heading and cover thereon supporting anchor head 2 and core through screw rod 3 from the outside to the inboard hole of passing this stretch-draw end end column 10.1, the spline short screw 8 that from left to right be inserted in plain washer 7 successively in these end column 10.1 inboards, screws mutually and the stop nut 9 and second clamp nut 11; Pass the hole of a plurality of middle standing pillars 10.2 again and on the monofilament drag-line 1 that is positioned at each middle standing pillar 10.2 both sides that need establish middle anchor device, respectively put a packing ring 12 simultaneously; To another stretch-draw end end column 10.1 inboards, be inserted in second clamp nut 11, the spline short screw 8 that screws mutually and stop nut 9, plain washer 7 more successively, and with this monofilament drag-line 1 and heading 1.1 and cover supporting anchor head 2 and core through screw rod 3 hole of passing this stretch-draw end end column 10.1 from the inboard to the outside thereon;
Insert a step that increases: with the middle standing pillar 10.2 of the middle of monofilament drag-line 1 length overall or near the middle standing pillar 10.2 of the monofilament drag-line 1 length overall middle end that fixes, be enclosed within split coupling 15 on the monofilament drag-line 1 and make it axially be positioned at the hole of middle standing pillar 10.2 in the middle part, with two packing rings 12 respectively near the two sides of middle standing pillar 10.2, end face with two pairs of anchor ears 13 pushes against two packing rings 12, successively two pairs of anchor ears 13 is tightened up with a plurality of fastening bolts 14 again;
3., be inserted in and plain washer 6 be fastened on the lateral wall of end column 10.1 on the core through screw rod 3 in two stretch-draw end end columns, 10.1 outsides successively, be inserted in spring washer 5, screw on and turn first clamp nut 4, meanwhile make temporary fixed of spanner at two parallel cut surface places of stretch-draw end end column 10.1 inboard core through screw rod 3, when not tightened because of first clamp nut 4, core through screw rod 3 rotates, progressively tighten first clamp nut 4 and end, again the edge of plain washer 6 is flipped to the outside into 90 ° two the parallel spline limits that first clamp nut 4 becomes flexible of preventing until the control stress for prestressing of monofilament drag-line 1 to regulation;
4., be inserted in and plain washer 7 be fastened on the inside wall of end column 10.1 on the core through screw rod 3 of two stretch-draw end end columns, 10.1 inboards, tighten stop nut 9, tighten second clamp nut 11 again to compress spline short screw 8 and stop nut 9, again the edge of plain washer 7 is turned into to the inside two loosening parallel spline limits of anti-stop nut 9 of 90 °;
5., middle anchor device is installed on the middle standing pillar 10.2 one by one: be enclosed within split coupling 15 on the monofilament drag-line 1 and make it axially be positioned at the hole of middle standing pillar 10.2 in the middle part, with two packing rings 12 respectively near the two sides of middle standing pillar 10.2, end face with two pairs of anchor ears 13 pushes against two packing rings 12, successively two pairs of anchor ears 13 is tightened up with a plurality of fastening bolts 14 again.
Below only just preferred embodiment of the present invention be described, but can not be interpreted as it is restriction to claim.The present invention not only is confined to above embodiment, and its concrete structure allows multiple variation, as: the length of monofilament drag-line 1 and the radical of column allow multiple setting; The packing ring of middle anchor device also can not established outer male half coupling, even also can not establish packing ring; Supporting anchor head 2 also can be concavo-convex arc surface with the end face that combines between the heading 1.1; If only need tensioned at one end, also can be only establish a supporting anchor head 2 and another stretch-draw end is not established at a stretch-draw end; The spline limit at the edge of described plain washer 6,7 can be one, also can be uneven two, but two should be non-conterminous on the hexagon of nut; The concrete operations of described mounting method also allow variation, also can be enclosed within on the core through screw rod 3 and with stop nut 9 as spline short screw 8 to screw after tightening first clamp nut 4 again; If do not establish 12 steps of on monofilament drag-line 1, not overlapping upper gasket 12 of packing ring; Or the like.All in a word various variations of being done in the protection domain of product independent claims 1 of the present invention and method independent claims 8 are all in protection scope of the present invention.
Claims (8)
1, the stretch-draw and the anchor device of monofilament drag-line under a kind of low control stress for prestressing, comprise that two ends are respectively equipped with the minor diameter monofilament drag-line (1) of heading (1.1), the stretch-draw of the two stretch-draw ends anchor device of holding concurrently: be located at respectively two stretch-draw ends be movably combined in that monofilament drag-line (1) is gone up and part be arranged in end column (10.1) hole core through screw rod (3), be positioned at end column (10.1) both sides and screw first clamp nut (4) and second clamp nut (11) on core through screw rod (3); It also comprises a plurality of middle anchor devices, and it is characterized in that: described monofilament drag-line (1) has the length that continues to pass through many root posts (10.1,10.2); The split coupling (15) that circle and monofilament drag-line (1) cylindrical matched in described each middle anchor device comprised, center bore after split coupling (15) closes up is less than the external diameter of monofilament drag-line (1), the axial centre of split coupling (15) is positioned at middle standing pillar (10.2) hole, and stretching out respectively has one pair this split coupling (15) is fastened on anchor ear (13) and a plurality of fastening bolt (14) on the monofilament drag-line (1) outside the axial two ends of split coupling (15) of middle standing pillar (10.2) both sides.
2, the stretch-draw and the anchor device of monofilament drag-line under the low control stress for prestressing according to claim 1, it is characterized in that: anchor device comprises that also two planes are fitted in the packing ring that is provided with outer male half coupling (12) of middle standing pillar (10.2) side and anchor ear (13) end face respectively in the middle of described, described packing ring (12) is a pair of, lays respectively at middle standing pillar (10.2) both sides and is enclosed within on the split coupling (15).
3, the stretch-draw and the anchor device of monofilament drag-line under the low control stress for prestressing according to claim 1, it is characterized in that: it comprises that also one at the every end of two stretch-draw ends is placed in the supporting anchor head (2) on the monofilament drag-line (1) between heading (1.1) and the core through screw rod (3), and described supporting anchor head (2) is concavo-convex arc surface with the end face that combines of core through screw rod (3).
4, the stretch-draw and the anchor device of monofilament drag-line under the low control stress for prestressing according to claim 3 is characterized in that: supporting anchor head (2) is the plane with the end face that combines between the heading (1.1).
5, the stretch-draw and the anchor device of monofilament drag-line under the low control stress for prestressing according to claim 1, it is characterized in that: two tangent planes that are parallel to each other are arranged on the excircle of the axial inner ends of described core through screw rod (3), interior hole shape and this end core through screw rod (3) profile match and opening is arranged and at spline short screw (8) sliding fit that is provided with screw thread on its excircle on this end core through screw rod (3), the external screw thread of this spline short screw (8) is and the opposite left-hand thread of hand of spiral of core through screw rod (3), is combined with stop nut (9) on the external screw thread of this spline short screw (8).
6, the stretch-draw and the anchor device of monofilament drag-line under the low control stress for prestressing according to claim 5, it is characterized in that: the length of two tangent planes that are parallel to each other is on described core through screw rod (3) the axial inner ends excircle: be no less than the width dimensions of twice end column (10.1) from its length dimension of inner face of core through screw rod (3), also be not more than half of core through screw rod (3) overall length dimension.
7, the stretch-draw and the anchor device of monofilament drag-line under the low control stress for prestressing according to claim 1, it is characterized in that: the inboard core through screw rod (3) of described first clamp nut (4) is gone up from clip end column (10.1) lateral wall to being provided with plain washer (6) and spring washer (5) successively away from end column (10.1) lateral wall, described plain washer (6) is fastened on the lateral wall of end column (10.1), described plain washer (6) has two loosening spline limits of anti-first clamp nut (4) of 90 ° of flipping to the outside, and two relative parallel edges of first clamp nut (4) are close on described two spline limits; The inboard core through screw rod (3) of described second clamp nut (11) is gone up from clip end column (10.1) inside wall to the spline short screw (8) and the stop nut (9) that are provided with plain washer (7) successively, screw mutually away from end column (10.1) inside wall, described plain washer (7) is fastened on the inboard of end column (10.1), there are two loosening spline limits of anti-stop nut (9) of 90 ° of overturning to the inside at the edge of described plain washer (7), and two relative parallel edges of stop nut (9) are close on described spline limit.
8, the stretch-draw of monofilament drag-line and the mounting method of anchor device under a kind of low control stress for prestressing, it is characterized in that: it comprises following processing step:
1., an end of monofilament drag-line (1) is upset out earlier heading (1.1), penetrate the supporting anchor head (2), core through screw rod (3), a plurality of split coupling (15) of this stretch-draw end successively, penetrate the core through screw rod (3) and the supporting anchor head (2) of another stretch-draw end again, the heading (1.1) of again other end of monofilament drag-line (1) being upset out forms the basic assembly of drag-line;
2., with the monofilament drag-line (1) of a stretch-draw end and heading (1.1) and cover supporting anchor head (2) and core through screw rod (3) hole of passing this stretch-draw end end column (10.1) from the outside to the inboard thereon, the spline short screw (8) and stop nut (9) and second clamp nut (11) that from left to right be inserted in plain washer (7) successively in this end column (10.1) inboard, screw mutually; Pass the hole of a plurality of middle standing pillars (10.2) again and on the monofilament drag-line (1) that is positioned at each middle standing pillar (10.2) both sides, respectively put a packing ring (12) simultaneously; To another stretch-draw end end column (10.1) inboard, spline short screw (8) that be inserted in second clamp nut (11) more successively, screws mutually and stop nut (9), plain washer (7), and with this monofilament drag-line (1) and heading (1.1) and cover supporting anchor head (2) and core through screw rod (3) hole of passing this stretch-draw end end column (10.1) from the inboard to the outside thereon;
3., be inserted in and plain washer (6) be fastened on the lateral wall of end column (10.1) on the core through screw rod (3) in two stretch-draw end end columns (10.1) outside successively, be inserted in spring washer (5), screw on and turn first clamp nut (4), meanwhile make temporary fixed of spanner at two parallel cut surface places of the inboard core through screw rod of stretch-draw end end column (10.1) (3), core through screw rod (3) is not rotated when tightening because of first clamp nut (4), progressively tighten first clamp nut (4) and end, again the edge of plain washer (6) is flipped to the outside into two loosening parallel spline limits of anti-first clamp nut (4) of 90 ° until the control stress for prestressing of monofilament drag-line (1) to regulation;
4., be inserted in and plain washer (7) be fastened on the inside wall of end column (10.1) on the core through screw rod (3) of two stretch-draw end end columns (10.1) inboard, tighten stop nut (9), tighten second clamp nut (11) again to compress spline short screw (8) and stop nut (9), again the edge of plain washer (7) is turned into to the inside two loosening parallel spline limits of anti-stop nut (9) of 90 °;
5., middle anchor device is installed in one by one on the middle standing pillar (10.2): split coupling (15) is enclosed within monofilament drag-line (1) goes up and make its axial middle part to be positioned at the hole of middle standing pillar (10.2), with two packing rings (12) respectively near the two sides of middle standing pillar (10.2), end face with two pairs of anchor ears (13) pushes against two packing rings (12), uses a plurality of fastening bolts (14) successively two pairs of anchor ears (13) to be tightened up again;
Or step 2. after,
With the middle standing pillar (10.2) of the middle of monofilament drag-line (1) length overall or near the middle standing pillar (10.2) of monofilament drag-line (1) the length overall middle end that fixes, split coupling (15) is enclosed within monofilament drag-line (1) goes up and makes its axial middle part to be positioned at the hole of middle standing pillar (10.2), with two packing rings (12) respectively near the two sides of middle standing pillar (10.2), end face with two pairs of anchor ears (13) pushes against two packing rings (12), uses a plurality of fastening bolts (14) successively two pairs of anchor ears (13) to be tightened up again;
Continue again completing steps 3.～step 5..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810061797A CN100595404C (en) | 2008-05-26 | 2008-05-26 | Stretching and anchoring device of single strand dragline under control stress for prestressing and installation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810061797A CN100595404C (en) | 2008-05-26 | 2008-05-26 | Stretching and anchoring device of single strand dragline under control stress for prestressing and installation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101285332A CN101285332A (en) | 2008-10-15 |
| CN100595404C true CN100595404C (en) | 2010-03-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810061797A Expired - Fee Related CN100595404C (en) | 2008-05-26 | 2008-05-26 | Stretching and anchoring device of single strand dragline under control stress for prestressing and installation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100595404C (en) |
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2008
- 2008-05-26 CN CN200810061797A patent/CN100595404C/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101285332A (en) | 2008-10-15 |
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