CN203923909U - Antiskid type cord clip of suspension bridge - Google Patents
Antiskid type cord clip of suspension bridge Download PDFInfo
- Publication number
- CN203923909U CN203923909U CN201420315530.0U CN201420315530U CN203923909U CN 203923909 U CN203923909 U CN 203923909U CN 201420315530 U CN201420315530 U CN 201420315530U CN 203923909 U CN203923909 U CN 203923909U
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- China
- Prior art keywords
- cord clip
- main push
- towing rope
- thread
- utility
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Abstract
Prevent that cord clip from being the significant design content of suspension bridge along main push-towing rope down sliding.The utility model provides a kind of antiskid type cord clip of suspension bridge, comprise between main push-towing rope thread in cord clip by and the friction plate that is connected with cord clip wall, can utilize the cord clip clamping force of originally transmitting between thread to produce more frictional force, anti-slide performance is increased dramatically, and can make cord clip length reduce 1/3.The utility model has adopted traditional contact surface material medium, can not cause main push-towing rope local stress to increase or fatigue strength reduction.The utility model has been continued to use reliable frictional force antiskid principle, has realized the anti-slide performance not increasing under cord clip clamping force strength condition and has promoted, and also can make the stressed more even of the interior main push-towing rope thread of cord clip.Principle of the present utility model is reliable, effect significantly, simple structure, easy construction, good economy performance, possess practical value.
Description
Technical field
The utility model relates to suspension bridge technical field, particularly a kind of antiskid cord clip.
Background technology
Main rope of suspension bridge is generally closely integrated by some zinc coated high strength steel silks, zinc coated high strength steel silk rope, zinc coated high strength steel twisted wire, and cord clip is the connector of main push-towing rope and hoist cable, and hoist cable is general in bridge facade to be arranged along vertical.
In prior art, cord clip generally adopts two-piece type, and two semicircles annular cord clip walls are involutory in main push-towing rope periphery, and connect by screw rod, by applying pulling force to screw rod, makes cord clip wall reduce internal diameter because of tension, thereby firmly hold the main push-towing rope passing through from cord clip.For making cord clip and main push-towing rope contact surface fully closely connected, cord clip wall generally adopts the cast steel material that elongation per unit length is high, simultaneously can fully be out of shape to adapt to cable shape when allowing cord clip wall tension, cord clip wall thickness can not be too large, this has limited the ability that bears of the cord clip wall of unit length, the connecting screw rod of two cord clips, generally along the single arrangement of main push-towing rope axis direction, makes cord clip larger along the axial length of main push-towing rope.
Existing cord clip technology adopts frictional force to carry out antiskid.Main push-towing rope is metal material with the contact surface medium of cord clip, is suitable for adhesion-ditch dug with a plow frictional theory, the general Coulomb friction theory that adopts more convenient use in engineering practice.According to Coulomb friction theory, the necessary and sufficient condition that produces frictional force on contact surface is: the friction factor of contact surface is greater than zero, there is pressure on contact surface and the object that is in contact with one another between there is relative sliding or there is the trend of relative sliding.The contact surface of cord clip and main push-towing rope thread is processed through hot spray painted zinc (aluminium), generally gets 0.15 friction factor when antiskid design; Larger clamping force is being born on main push-towing rope surface in cord clip; Cord clip place hoist cable axle power, along the general non-zero of the tangential component of main push-towing rope, makes main push-towing rope and cord clip contact surface have tangential sliding force, makes cord clip have the trend of sliding to main push-towing rope lower position.Above-mentioned three factors be in prior art between cord clip and main push-towing rope by the general principle of frictional force antiskid.
According to Coulomb friction theory, the friction factor that improves contact surface is an approach that strengthens anti-slide performance.But in engineering practice, because main push-towing rope thread in cord clip is subject to the effect of cord clip clamping force, contact stress is larger, also has higher local stress in cord clip exit, and the axial fatigue intensity of main push-towing rope is to contact surface medium sensitivity, cord clip generally adopts cast steel, need make hot spray painted zinc (aluminium) with the contact surface of main push-towing rope and process, build is generally not less than 200um, is not reducing under the prerequisite of existing main push-towing rope fatigue strength, whether the more contact surface dielectric material of great friction coefficient can be provided in addition, also require further study.Known according to adhesion-ditch dug with a plow frictional theory, under the condition of material that does not change contact surface medium, it is very difficult wanting to improve contact surface friction factor.
According to Coulomb friction theory, skid resistance size is directly proportional to interface pressure, the pressure strengthening on contact surface is also an approach that improves cord clip skid resistance, this comprises again and maintains cord clip length constant enhancing unit length cord clip and the main push-towing rope Contact intensity of pressure and maintain unit length cord clip and the constant lengthening cord clip of the main push-towing rope Contact intensity of pressure, these two kinds of measures.But the former can cause main push-towing rope void content in cord clip further to reduce, too high for preventing cord clip exit main push-towing rope thread local stress, generally the main push-towing rope thread void content difference inside and outside cord clip is limited in 2%, the pressure on visible unit length cord clip and main push-towing rope contact surface can not arbitrarily improve.Prior art is in order to increase cord clip skid resistance, and the main method of taking is exactly to increase the length of cord clip along main push-towing rope.
A defect of existing cord clip technology is, cord clip clamping force only can produce antiskid frictional force on cord clip inwall and this contact surface of main push-towing rope outer rim, causes the cord clip anti-slide performance of unit length lower, cord clip is longer.
Utility model content
The purpose of this utility model is to overcome the deficiency of above-mentioned prior art, and a kind of new type suspension bridge cord clip is provided.The utility model provides a kind of antiskid type cord clip of suspension bridge, be included in a kind of friction skidding device being connected with cord clip wall increasing between the main push-towing rope thread in cord clip, can utilize the clamping force of originally transmitting between main push-towing rope thread in cord clip to produce new antiskid frictional force, cord clip anti-slide performance is got a promotion, solve the problem that cord clip anti-slide performance is lower, cord clip is grown of unit length.
For this reason, concrete solution is:
A kind of cord clip of suspension bridge, it is the connector of main rope of suspension bridge and hoist cable, comprise that two are combined the cord clip wall connecting with screw rod, hoist cable is connected with cord clip wall, passes through main push-towing rope surface and cord clip wall medial surface close contact the circular hole that some threads of formation main push-towing rope surround from cord clip wall, it is characterized in that, also comprise main push-towing rope friction skidding device, this main push-towing rope friction skidding device passes through between the main push-towing rope thread in cord clip, and is connected with cord clip wall near two cord clip wall apposition positions.
The utlity model has following advantage:
The one, antiskid principle is reliable.The utility model has been continued to use friction antiskid principle of the prior art, and modern suspension practice has proved to rub antiskid principle not only effectively but also reliable.In the utility model, the cord clip wall medial surface directly contacting with main push-towing rope thread and material and the skin covering of the surface on friction skidding device surface are unanimous on the whole, have roughly the same friction factor; Friction skidding device is connected with cord clip wall, can transmit along the power of main push-towing rope axis direction, and main push-towing rope thread is consistent with respect to the direction of the relative sliding trend of friction skidding device and cord clip wall, and the direction of frictional force is consistent.In the prior art, act on the lip-deep cord clip clamping force of circular cross-section main push-towing rope, cancel each other to maintain the stress balance state of main push-towing rope thread in cord clip by the transmission of main push-towing rope thread, be to go up in any direction and all have pressure between the inner thread of main push-towing rope, the intensity of this pressure is consistent with the intensity of the cord clip clamping force between main push-towing rope surface and cord clip wall medial surface.In the utility model, friction skidding device passes through between main push-towing rope thread, upper and lower surface all contacts with main push-towing rope thread, and participate in the transmittance process of cord clip clamping force between main push-towing rope thread, on two surfaces that contact with main push-towing rope thread at friction skidding device, all bear the pressure identical with cord clip clamping force intensity, thereby increasing dexterously the summation of the pressure on the whole contact surfaces that act on antiskid cord clip and main push-towing rope thread, realizing the lifting of antiskid frictional force.
The 2nd, anti-slide performance significantly promotes.As previously mentioned, be placed in the friction skidding device between main push-towing rope thread in cord clip and have two surfaces that can produce frictional force, act on the intensity of these lip-deep pressure, identical with the pressure intensity between cord clip wall and main push-towing rope surface, the width of considering friction skidding device is roughly the main push-towing rope diameter in cord clip, if main push-towing rope diameter is D in cord clip, skid resistance lifting amplitude is (π D+2 × D)/(π D)-100%=63.7%, and the anti-slide performance of the utility model cord clip has significantly lifting.
The 3rd, can not aggravate the impact on main push-towing rope fatigue strength.Main push-towing rope thread is consistent or similar with the material medium of the contact surface of friction skidding device and cord clip wall medial surface, and the pressure intensity on these contact surfaces equates, the contact stress that is main push-towing rope thread does not also change, consider that what contact with friction skidding device and cord clip wall medial surface is the different piece of main push-towing rope thread in cord clip, local stress does not also superpose, therefore the utility model can not aggravate the impact on main push-towing rope fatigue strength.
The 4th, in cord clip, the stressed uniformity coefficient of main push-towing rope thread makes moderate progress.In prior art, the internal friction in cord clip between main push-towing rope thread, is to prevent that the main push-towing rope thread directly not contacting with cord clip wall from the reason of sliding occurring.This interior friction is a consequence of skid resistance successively, is that the main push-towing rope thread that is positioned at middle part has the moderate finite deformation amount axial along main push-towing rope, and this deflection has cumulative from outside to inside situation, and the stressed uniformity coefficient of main push-towing rope thread is not very good.The utility model has increased the friction skidding device being connected with saddle groove cell wall in cord clip between main push-towing rope thread, destroyed the cumulative mechanism from outside to inside of main push-towing rope thread axial deformation, and the stressed uniformity coefficient of main push-towing rope thread in cord clip is made moderate progress.
Brief description of the drawings
Fig. 1 is the lateral view of a kind of preferred embodiment of cord clip structure of the present utility model;
Fig. 2 is flat sectional drawing embodiment illustrated in fig. 1;
Fig. 3 is cross-sectional view embodiment illustrated in fig. 1.
Wherein, 1---cord clip wall first, 2---cord clip wall second, 3---screw rod, 4---friction plate, 5---friction plate bonding pad first, 6---friction plate bonding pad second, 7---friction plate connecting bolt, 8---screw rod passes through hole
The embodiment now providing by reference to the accompanying drawings and below, describes the utility model in detail.
Detailed description of the invention
Accompanying drawing shows a kind of preferred embodiment of the utility model cord clip.This cord clip is the connector of sling of suspension bridge and main push-towing rope, hoist cable is connected with the hanger of cord clip wall first 1 below, and cord clip wall first 1 is connected by screw rod 3 with cord clip wall 2, to the round-meshed tubulose of synthetic middle part tool, main push-towing rope is made up of some threads, from the circular hole at cord clip middle part, passes through.Two cord clip wall apposition positions have gap, friction skidding device 4 stretches out from this gap and forms bonding pad first 5 and bonding pad second 6, bonding pad first 5 is connected by bolt 7 with cord clip wall second 2, bonding pad second 6 is connected by bolt 7 with cord clip wall first 1, the main push-towing rope thread of the middle part of friction skidding device 4 in cord clip, pass through, friction skidding device 4 is provided with by hole 8 with cord clip wall connecting bolt 3 intersections, with cord clip wall first 2 on male half coupling intersection be provided with recessed seam.
The installation steps of the cord clip of this embodiment are:
The first step is after with friction skidding device 4 belows and with it, crossing main push-towing rope thread sets up, the a small amount of main push-towing rope thread batten that is positioned at this friction skidding device top is paved, fill in this friction skidding device, and with tightrope near the screw rod this friction skidding device side by hole 8, walk around the main push-towing rope thread of its below, be connected by hole with near the screw rod another side of this friction skidding device, this friction skidding device is temporarily fixed on main push-towing rope.
Second step is that to treat that main push-towing rope thread sets up complete, completes after tight cable operation the tightrope that temporary fixing lifting is used, pass line double wall first 1, cord clip wall second 2 and screw rod 3.
The 3rd step is after screw rod 3 stretch-draw, and connecting bolt 6 is installed.
The 4th step be the follow-up construction of suspension bridge make main push-towing rope gravity load increase time, screw rod 3 is supplemented after stretch-draw, supplement connection connecting bolt 6 torsion.
Claims (1)
1. a cord clip of suspension bridge, it is the connector of main rope of suspension bridge and hoist cable, comprise that two are combined the cord clip wall connecting with screw rod, hoist cable is connected with cord clip wall, passes through main push-towing rope surface and cord clip wall medial surface close contact the circular hole that some threads of formation main push-towing rope surround from cord clip wall, it is characterized in that, also comprise main push-towing rope friction skidding device, this main push-towing rope friction skidding device passes through between the main push-towing rope thread in cord clip, and is connected with cord clip wall near two cord clip wall apposition positions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420315530.0U CN203923909U (en) | 2014-06-14 | 2014-06-14 | Antiskid type cord clip of suspension bridge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420315530.0U CN203923909U (en) | 2014-06-14 | 2014-06-14 | Antiskid type cord clip of suspension bridge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203923909U true CN203923909U (en) | 2014-11-05 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420315530.0U Expired - Fee Related CN203923909U (en) | 2014-06-14 | 2014-06-14 | Antiskid type cord clip of suspension bridge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203923909U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106400981A (en) * | 2016-09-30 | 2017-02-15 | 上海建筑设计研究院有限公司 | Cable clamp |
| CN106400685A (en) * | 2016-09-30 | 2017-02-15 | 柳州欧维姆机械股份有限公司 | Suspension bridge cable clamp with sealing structure and installation construction method thereof |
| CN107748031A (en) * | 2017-09-14 | 2018-03-02 | 中铁大桥科学研究院有限公司 | A kind of cord clip of suspension bridge screw rod axle power detection servicing unit and detection method |
-
2014
- 2014-06-14 CN CN201420315530.0U patent/CN203923909U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106400981A (en) * | 2016-09-30 | 2017-02-15 | 上海建筑设计研究院有限公司 | Cable clamp |
| CN106400685A (en) * | 2016-09-30 | 2017-02-15 | 柳州欧维姆机械股份有限公司 | Suspension bridge cable clamp with sealing structure and installation construction method thereof |
| CN106400685B (en) * | 2016-09-30 | 2018-05-25 | 柳州欧维姆机械股份有限公司 | A kind of cord clip of suspension bridge and its construction method of installation with sealing structure |
| CN107748031A (en) * | 2017-09-14 | 2018-03-02 | 中铁大桥科学研究院有限公司 | A kind of cord clip of suspension bridge screw rod axle power detection servicing unit and detection method |
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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: 20141105 Termination date: 20150614 |
|
| EXPY | Termination of patent right or utility model |