CN201209293Y - Stretching and supporting anchor device at single filament stay stretching en under low-stretching control stress - Google Patents
Stretching and supporting anchor device at single filament stay stretching en under low-stretching control stress Download PDFInfo
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- CN201209293Y CN201209293Y CNU2008200879894U CN200820087989U CN201209293Y CN 201209293 Y CN201209293 Y CN 201209293Y CN U2008200879894 U CNU2008200879894 U CN U2008200879894U CN 200820087989 U CN200820087989 U CN 200820087989U CN 201209293 Y CN201209293 Y CN 201209293Y
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- stretch
- drag
- draw
- line
- supporting anchor
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Abstract
The utility model discloses a tension supporting and anchoring device on a tensile end of a single-wire inhaul cable under a low tensile control stress, which comprises a minor diameter single-wire inhaul cable (1) with both ends respectively provided with a heading (1.1), penetrating screws (3) respectively arranged at the both tensile ends, flexibly sleeved on the minor diameter single-wire inhaul cable (1) and partially positioned in the hole of an end upright post (10), tightening nuts (4,11) positioned on both sides of the end upright post (10) and screwed onto the penetrating screws (3); and at least one supporting anchor (2) sleeved on the single-wire inhaul cable (1) between the heading (1.1) and the penetrating screws (3) and arranged on one tensile end. The combining head faces of the supporting anchor (2) and the penetrating screw (3) are a concave arc surface and a convex arc surface, and the number of the supporting anchors (2) is two with one respectively arranged on either tensile end. The device can reduce the construction difficulty, guarantee the security of the single-wire inhaul cable and extend the service life of the device.
Description
Technical field
The utility model relates to stretch-draw and the anchor device 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 the stretch-draw supporting anchor device of monofilament drag-line stretch-draw end 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 structure of the stretch-draw of monofilament drag-line stretch-draw end supporting anchor device is generally under the low control stress for prestressing of prior art: the steel minor diameter monofilament drag-line 101 outer core through screw rod 103 that are with that are provided with Upsetting 102 are engaged in the hole of columns 100 such as stair, air partition, and tighten up by the clamp nut 104 that screws on core through screw rod 103 and lay respectively at column 100 both sides, cooperate for the plane between Upsetting 102 and the core through screw rod 103.
There is following shortcoming in actual applications in the stretch-draw of monofilament drag-line supporting anchor device under the low control stress for prestressing of above prior art:
When the clamp nut in the column outside that double as stretch-draw and anchoring are used 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 clamp nut rundown 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.
The utility model content
The technical problems to be solved in the utility model is, provide the frictional resistance of a kind of steel wire heading and core through screw rod little, can reduce the wrench torque when tightening clamp nut, can reduce or avoid again to drive the issuable torsional interaction of drag-line steel wire and change steel wire stress phenomenon, thereby reduce the stretch-draw supporting anchor device of monofilament drag-line stretch-draw end under difficulty of construction, the safety that ensures the monofilament drag-line, the extension fixture low control stress for prestressing in application life because of tightening clamp nut.
The technical solution of the utility model is, the stretch-draw supporting anchor device of monofilament drag-line stretch-draw end under a kind of low control stress for prestressing with following structure is provided, comprise that two ends are respectively equipped with the minor diameter monofilament drag-line of Upsetting head, be located at respectively two stretch-draw ends be movably combined on the monofilament drag-line and part is arranged in the core through screw rod of end leghole, be positioned at end column both sides and screw clamp nut on core through screw rod, it comprises that also at least one is located at the supporting anchor head on the monofilament drag-line between Upsetting head and the core through screw rod of being placed in of a stretch-draw end, and described supporting anchor head is concavo-convex arc surface with the end face that combines of core through screw rod.
After adopting above structure, the stretch-draw of monofilament drag-line stretch-draw end supporting anchor device is compared with above prior art under the utility model control stress for prestressing, has the following advantages:
Because at least one stretch-draw end of the present utility model increases the supporting anchor head on the monofilament drag-line of being located between Upsetting head 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 that is positioned at the column outside is tightened, just make original plane hard friction become pivoting friction, promptly become circular arc type 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 tightening 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 the utility model device.
As improvement, described supporting anchor head is two, and two stretch-draw ends, one end is provided with one; Make above advantage more outstanding like this.
Description of drawings
Fig. 1 is the sectional structure schematic diagram (illustrating in background technology, so no longer mention in the following specific embodiment) that anchor device is supported in the stretch-draw of the stretch-draw end of minor diameter steel monofilament drag-line under the low control stress for prestressing of prior art.
Fig. 2 is the sectional structure schematic diagram that anchor device is supported in the stretch-draw of the stretch-draw end of minor diameter (steel) monofilament drag-line under the low control stress for prestressing of the utility model.
Fig. 3 is the sectional structure schematic diagram along the A-A line among Fig. 2.
Fig. 4 is the sectional structure schematic diagram along the B-B line among Fig. 2.
Fig. 5 is the structural representation that the plain washer (spline packing ring) of anchor device is supported in the stretch-draw of the stretch-draw end of minor diameter steel monofilament drag-line under the low control stress for prestressing of the utility model.
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 utility model; 1, monofilament drag-line, 1.1, Upsetting head, 2, the supporting anchor head, 3, core through screw rod, 4, clamp nut, 5, spring washer, 6, plain washer, 7, plain washer, 8, the spline short screw, 9, stop nut, 10, the end column, 11, clamp nut.
The specific embodiment
Be described in further detail below in conjunction with the stretch-draw supporting anchor device of the drawings and specific embodiments monofilament drag-line stretch-draw end under the low control stress for prestressing of the utility model.
The stretch-draw supporting anchor device of head end shown in Figure 2, and the stretch-draw supporting anchor device structure of the stretch-draw of tail end supporting anchor device and head end is identical, only direction is just in time opposite.The stretch-draw supporting anchor device of monofilament drag-line stretch-draw end under the low control stress for prestressing of the utility model, comprise that two ends are respectively equipped with the minor diameter monofilament drag-line 1 of Upsetting 1.1, be located at respectively two stretch-draw ends be movably combined on the monofilament drag-line 1 and part be arranged in end column 10 holes core through screw rod 3, be positioned at end column 10 both sides and be tightened on clamp nut 4,11 on the core through screw rod 3.It also comprises the supporting anchor head 2 on the monofilament drag-line 1 between Upsetting 1.1 and the core through screw rod 3 of being placed in of being located at one at two stretch-draw ends, one end.Be that present embodiment supporting anchor head 2 adopts two, two stretch-draw ends, one end is provided with one.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.The end face that combines between supporting anchor head 2 and the Upsetting 1.1 is the plane.
After adopting above structure, when clamp nut 4 was tightened, core through screw rod 3 just moved and drives supporting anchor head 2 and Upsetting 1.1 laterally and also outwards moves, and then tension monofilament drag-line 1 reaches the stretch-draw purpose.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, nature, resistance when 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.
As Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, the stretch-draw supporting anchor device of monofilament drag-line stretch-draw end also comprises following structure under the low control stress for prestressing of the utility model:
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 on the described core through screw rod 3 axial inner ends excircles: the gauge that is no less than twice column 10 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 the inboard, thereby make following stop bit short screw 8 and stop nut 9 can be pressed on all the time the end column 10 medial surface; 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, so that fastening bolt 4 can all be in the circumferential thread section, thereby makes its stretch-draw supporting 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.The promptly interior hole shape of one shape of a hoof and this end core through screw rod 3 profiles match and opening and threaded spline short screw 8 sliding fits of its cylindrical are arranged 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 clamp nut 4 inboards from clip end column 10 lateral walls to being to be provided with plain washer 6 and spring washer 5 Fig. 2 from right to left away from end column 10 lateral walls.Described plain washer 6 tightens up as present embodiment and is fastened on the lateral wall of end column 10 by a pair of dormant bolt (unlabelled hole only is shown among Fig. 5, and not shown dormant bolt).The edge of described plain washer 6 has two to be the loosening spline limit of anti-clamp nut 4 of 90 ° of left side upsets among Fig. 2 laterally, and two relative parallel edges of clamp nut 4 are close on described spline limit.On the core through screw rod 3 of described clamp nut 11 inboards from clip end column 10 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 inside walls (Fig. 2 from left to right).(plain washer 7 is identical with plain washer 6 structures for described plain washer 7, but not shown) fastening as present embodiment by a pair of dormant bolt be fastened on the end column 10 inside wall on, there is the loosening spline limit of the anti-stop nut 9 of 90 ° of two (among Fig. 2 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, 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, be to guarantee clamp nut 4 and stop nut 9 tight measures: when core through screw rod 3 when 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 clamp nut 11 axial compression on core through screw rod 3, thereby clamp nut 4 and stop nut 9 and core through screw rod 3 is played the effect of locking spline.
Below only be described, but can not be interpreted as it is restriction claim with regard to the utility model preferred embodiment.The utility model not only is confined to above embodiment, and its concrete structure allows multiple variation, as: the end face that combines between supporting anchor head 2 and the Upsetting 1.1 also can be concavo-convex arc surface; If only need tensioned at one end, can be only establish a supporting anchor head 2 and another stretch-draw end is not established at a stretch-draw end; Or the like.In a word, all various variations of being done in the protection domain of the utility model independent claims are all in protection domain of the present utility model.
Claims (3)
1, the stretch-draw of monofilament drag-line stretch-draw end supporting anchor device 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 Upsetting head (1.1), be located at the core through screw rod (3) that monofilament drag-line (1) upward and partly is arranged in end column (10) hole that is movably combined in of two stretch-draw ends respectively, be positioned at end column (10) both sides and screw clamp nut (4 on core through screw rod (3), 11), it is characterized in that: it comprises that also at least one is located at the supporting anchor head (2) on the monofilament drag-line (1) between Upsetting head (1.1) and the core through screw rod (3) of being placed in of a stretch-draw end, and described supporting anchor head (2) is concavo-convex arc surface with the end face that combines of core through screw rod (3).
2, the stretch-draw of monofilament drag-line stretch-draw end supporting anchor device under the low control stress for prestressing according to claim 1, it is characterized in that: described supporting anchor head (2) is two, two stretch-draw ends, one end is provided with one.
3, the stretch-draw of monofilament drag-line stretch-draw end supporting anchor device under the low control stress for prestressing according to claim 1 is characterized in that: supporting anchor head (2) is concavo-convex arc surface with the end face that combines between the Upsetting head (1.1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200879894U CN201209293Y (en) | 2008-05-26 | 2008-05-26 | Stretching and supporting anchor device at single filament stay stretching en under low-stretching control stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200879894U CN201209293Y (en) | 2008-05-26 | 2008-05-26 | Stretching and supporting anchor device at single filament stay stretching en under low-stretching control stress |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201209293Y true CN201209293Y (en) | 2009-03-18 |
Family
ID=40480022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200879894U Expired - Fee Related CN201209293Y (en) | 2008-05-26 | 2008-05-26 | Stretching and supporting anchor device at single filament stay stretching en under low-stretching control stress |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201209293Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109397193A (en) * | 2018-11-30 | 2019-03-01 | 浙江省二建建设集团安装有限公司 | The pawl support of hand-held dismounting cigarette induction device |
-
2008
- 2008-05-26 CN CNU2008200879894U patent/CN201209293Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109397193A (en) * | 2018-11-30 | 2019-03-01 | 浙江省二建建设集团安装有限公司 | The pawl support of hand-held dismounting cigarette induction device |
| CN109397193B (en) * | 2018-11-30 | 2023-09-08 | 浙江省二建建设集团安装有限公司 | Claw support for hand-held dismounting smoke sensor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090318 Termination date: 20170526 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |