CN113585072B - Sliding damping cable vibration damper - Google Patents
Sliding damping cable vibration damper Download PDFInfo
- Publication number
- CN113585072B CN113585072B CN202110947742.5A CN202110947742A CN113585072B CN 113585072 B CN113585072 B CN 113585072B CN 202110947742 A CN202110947742 A CN 202110947742A CN 113585072 B CN113585072 B CN 113585072B
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- CN
- China
- Prior art keywords
- cable
- sliding block
- wheel
- positioning
- towers
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/16—Suspension cables; Cable clamps for suspension cables ; Pre- or post-stressed cables
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/14—Towers; Anchors ; Connection of cables to bridge parts; Saddle supports
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
Abstract
The invention discloses a sliding type damping cable vibration damper, which comprises a controlled structure, wherein two cable towers are arranged on two sides of the controlled structure, the controlled structure is respectively connected with the two cable towers through the two cable structures, each cable structure is provided with a vibration damping mechanism, each vibration damping mechanism comprises a sliding block, a positioning cable and an energy consumption cable, the sliding block is fixedly connected to a cable wheel frame, the cable wheel frame is provided with two cable wheel pins, each cable wheel pin is provided with a cable wheel, the cable wheels straddle the cable structures, one end of the positioning cable is fixed on the cable wheel frame, the other end of the positioning cable is connected with the cable towers, the lower end of the sliding block is symmetrically connected with the two energy consumption cables, the energy consumption cables are connected with a return spring and the upper ends of dampers, and the lower ends of the return spring and the dampers are connected with the cable towers. The invention combines the inclination of the cable structure, the gravity of the sliding block, the tension of the pull-down spring and the reduction of the friction force of the cable wheel and the tension of the positioning cable, thereby realizing the free movement of the cable structure in the axial direction without influencing the position of the sliding block, and realizing the mutual restraint and consistent movement of the sliding block and the cable structure in the transverse direction.
Description
Technical Field
The invention relates to a sliding damping cable vibration damper.
Background
For cable structures needing continuous stretching and retracting, such as cable structures of a sky-eye feed source cabin, the clear observation of a celestial body is ensured by continuously adjusting the position and the angle of the feed source cabin according to the position of the sky and the position, so that the length of each cable structure is continuously changed. The slender cable structure is very easy to vibrate under the action of wind load due to slender, soft and low damping, and finally the vibration of the feed source cabin is caused, so that the imaging quality is influenced. The upper end of the damper is hinged with the cable structure, the lower end of the damper is hinged with a support fixedly connected with a bridge floor, and when the cable structure vibrates relative to the bridge floor, the damper is continuously pushed and pulled to drive the damper to consume mechanical energy of the cable structure; however, the installation of the damper can hinder the axial movement of the cable structure, namely, the retraction of the cable structure is influenced.
Disclosure of Invention
In order to solve the technical problem, the invention provides a slipping damping cable vibration damping device which is simple in structure and reliable in work.
The technical scheme for solving the problems is as follows: the utility model provides a sliding damping cable vibration damper, is including being controlled structure, cable tower, is controlled the structure left and right sides symmetry and sets up two cable towers, is controlled the structure and is connected with two cable towers of both sides respectively through two cable structures at both ends, and every is equipped with a damping mechanism that is used for the damping power consumption structurally.
The sliding damping cable vibration damping device comprises a sliding block, a cable wheel, a positioning cable, a pulley, a reset spring and a cable wheel pin, wherein the sliding block is fixedly connected to a cable wheel frame through a bolt, the cable wheel frame is provided with two cable wheel pins, each cable wheel pin is provided with one cable wheel, the cable wheels straddle on cable structures, one end of the positioning cable is fixed to the cable wheel frame, the other end of the positioning cable is connected with a cable tower, the lower end of the sliding block is symmetrically connected with two energy consuming cables, the energy consuming cables straddle the pulley on the cable tower and are connected with the reset spring and the upper end of a damper, and the lower ends of the reset spring and the damper are connected with the cable tower.
According to the sliding damping cable vibration damper, the cable structure below the sliding block is fixedly provided with the cable clamp, and the pull-down spring is arranged between the cable clamp and the sliding block.
According to the sliding damping cable vibration damping device, the length of the positioning cable and the gravity of the sliding block determine the position of the sliding block.
The invention has the beneficial effects that:
1. the invention combines the inclination of the cable structure, the gravity of the sliding block, the tension of the pull-down spring and the reduction of the friction force of the cable wheel and the tension of the positioning cable, thereby realizing the free movement of the cable structure in the axial direction without influencing the position of the sliding block, and realizing the mutual restraint and consistent movement of the sliding block and the cable structure in the transverse direction.
2. The invention adopts the positioning cable to determine the position of the sliding block, and the position of the sliding block can be conveniently adjusted according to requirements.
3. The mass of the sliding block can increase the local amplitude of the cable structure, so that the energy consumption of the damper can be enhanced, and the vibration reduction effect can be improved.
4. The tension of the pull-down spring is favorable for balancing the upward component force of the energy consumption cable, and the energy consumption cable is favorable for being arranged in a larger space range.
5. The installation position of the damping cable is convenient to arrange.
6. The cable clamp simultaneously has the advantages of preventing the sliding block from sliding to the controlled structure and causing collision when the positioning cable is accidentally dropped.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic side view of the slider in fig. 1.
Detailed Description
The invention is further described below with reference to the accompanying drawings and examples.
The controlled structure 1 (such as a large astronomical telescope feed cabin) moves and rotates in space under the traction of the guy cable structure, the distance from the controlled structure 1 to the cable tower 6 of the cable structure 2 needs to be changed continuously, and the vibration frequency of each cable caused by wind changes continuously. In order to adapt to the vibration reduction of the cable structure 2 with variable cable length, the structure of the sliding type damping cable vibration reduction device is designed as follows:
as shown in fig. 1 and 2, the sliding damping cable vibration damper includes a controlled structure 1, cable structures 2, and cable towers 6, wherein the controlled structure 1 has two cable towers 6 symmetrically disposed on the left and right sides, the controlled structure 1 is connected to the two cable towers 6 on the two sides through the two cable structures 2 at the two ends, and each cable structure 2 is provided with a vibration damping mechanism for damping and dissipating energy.
The damping mechanism comprises a sliding block 3, a cable pulley 4, a positioning cable 5, a pulley 7, a return spring 8, a damper 9, an energy consumption cable 10 and a cable pulley pin 11, wherein the sliding block 3 is fixedly connected to a cable pulley frame through a bolt, the cable pulley frame is provided with two cable pulley pins 11, each cable pulley pin 11 is provided with one cable pulley 4, the cable pulley 4 straddles on the cable structure 2, and the circle center connecting line of the two cable pulleys 4 on each cable pulley pin 11 is parallel to the cable structure 2; one end of the positioning cable 5 is fixed on the cable pulley frame, the other end of the positioning cable 5 is connected with the cable tower 6, the lower end of the sliding block 3 is symmetrically connected with two energy dissipation cables 10, the energy dissipation cables 10 cross a pulley 7 on the cable tower 6 and are connected with a return spring 8 and the upper end of a damper 9, and the lower ends of the return spring 8 and the damper 9 are connected with the cable tower 6; a cable clamp 12 is fixedly arranged on the cable structure 2 below the sliding block 3, and a pull-down spring 13 is arranged between the cable clamp 12 and the sliding block 3.
The working principle of the invention is as follows:
the slide block 3 is always kept in contact with the cable structure 2 under the combined action of gravity, the tension of the positioning cable 5, the tension of the pull-down spring 13 and the tension of the energy consumption cable 10; when the cable structure 2 is folded and unfolded, the cable wheel 4 between the sliding block 3 and the cable structure 2 rotates, the distance between the sliding block 3 and the cable tower 6 is determined by the positioning cable 5, and the pull-down spring 13 has enough elongation so as not to influence the folding and unfolding of the cable structure;
when the cable structure 2 vibrates upwards, the sliding block 3 and the energy consumption cable 10 are driven to move upwards, the return spring 8 and the damper 9 are stretched, and the mechanical energy of the cable structure 2 is reduced by the energy consumption of the damper;
when the cable structure 2 vibrates downwards, the sliding block 3 and the energy dissipation cable 10 are driven to move downwards, the return spring 8 contracts, the damper 9 is compressed, and the mechanical energy of the cable structure 2 is reduced by the energy dissipation of the damper;
when the cable structure 2 vibrates leftwards, the sliding block 3 and the energy consumption cable 10 are driven to move leftwards, the left return spring contracts, the damper 9 is compressed, the right return spring and the damper 9 are stretched, and the two dampers consume energy simultaneously to reduce mechanical energy of the cable structure 2;
the damping principle is similar when the cable structure 2 vibrates to the right.
Claims (3)
1. A sliding damping cable vibration damper is characterized by comprising a controlled structure, cable structures and cable towers, wherein the left side and the right side of the controlled structure are symmetrically provided with the two cable towers, the controlled structure is respectively connected with the two cable towers at the two sides through the two cable structures at the two ends, and each cable structure is provided with a vibration damping mechanism for damping and dissipating energy;
the damping mechanism comprises a sliding block, a cable wheel, a positioning cable, a pulley, a return spring and a cable wheel pin, wherein the sliding block is fixedly connected to a cable wheel frame through a bolt, two cable wheel pins are arranged on the cable wheel frame, a cable wheel is arranged on each cable wheel pin, the cable wheel straddles on a cable structure, one end of the positioning cable is fixed on the cable wheel frame, the other end of the positioning cable is connected with a cable tower, the lower end of the sliding block is symmetrically connected with two energy-consuming cables, the energy-consuming cables straddle the pulleys on the cable tower and are connected with the return spring and the upper end of a damper, and the lower ends of the return spring and the damper are connected with the cable tower.
2. The sliding damping cable vibration damper according to claim 1, wherein a cable clamp is fixedly arranged on the cable structure below the sliding block, and a pull-down spring is arranged between the cable clamp and the sliding block.
3. The sliding dampening cable shock absorber of claim 1, wherein the length of the positioning cable and the weight of the slide determine the slide position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110947742.5A CN113585072B (en) | 2021-08-18 | 2021-08-18 | Sliding damping cable vibration damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110947742.5A CN113585072B (en) | 2021-08-18 | 2021-08-18 | Sliding damping cable vibration damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113585072A CN113585072A (en) | 2021-11-02 |
| CN113585072B true CN113585072B (en) | 2022-10-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110947742.5A Active CN113585072B (en) | 2021-08-18 | 2021-08-18 | Sliding damping cable vibration damper |
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| CN (1) | CN113585072B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0559703A (en) * | 1991-08-30 | 1993-03-09 | Kawada Kogyo Kk | Vibration controller for cable for cable stayed bridge |
| CN1651656A (en) * | 2004-12-07 | 2005-08-10 | 清华大学 | Stayed cable shock attenuation device |
| CN101550733A (en) * | 2009-05-07 | 2009-10-07 | 同济大学 | Stay cable end elastic constraint vibration controlling device |
| KR100936083B1 (en) * | 2009-05-22 | 2010-01-12 | 케이블텍 주식회사 | Cable damper |
| CN101709566A (en) * | 2009-10-14 | 2010-05-19 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Mass damping device of flexible connection space lever of stay cable |
| CN101709567A (en) * | 2009-10-14 | 2010-05-19 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Mass damping device of rigid connection space lever of stay cable |
| CN106368343A (en) * | 2016-11-15 | 2017-02-01 | 湖南科技大学 | Sag damping cable |
| CN107165049A (en) * | 2017-06-14 | 2017-09-15 | 南昌工程学院 | A kind of vibration absorber in the cable of suspension system for civil engineering structure |
| CN111236038A (en) * | 2020-03-09 | 2020-06-05 | 东南大学 | Novel suspension bridge central authorities detain device |
| CN111877159A (en) * | 2020-09-17 | 2020-11-03 | 何静 | Bridge stay cable damping mechanism |
-
2021
- 2021-08-18 CN CN202110947742.5A patent/CN113585072B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0559703A (en) * | 1991-08-30 | 1993-03-09 | Kawada Kogyo Kk | Vibration controller for cable for cable stayed bridge |
| CN1651656A (en) * | 2004-12-07 | 2005-08-10 | 清华大学 | Stayed cable shock attenuation device |
| CN101550733A (en) * | 2009-05-07 | 2009-10-07 | 同济大学 | Stay cable end elastic constraint vibration controlling device |
| KR100936083B1 (en) * | 2009-05-22 | 2010-01-12 | 케이블텍 주식회사 | Cable damper |
| CN101709566A (en) * | 2009-10-14 | 2010-05-19 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Mass damping device of flexible connection space lever of stay cable |
| CN101709567A (en) * | 2009-10-14 | 2010-05-19 | 中铁大桥局集团武汉桥梁科学研究院有限公司 | Mass damping device of rigid connection space lever of stay cable |
| CN106368343A (en) * | 2016-11-15 | 2017-02-01 | 湖南科技大学 | Sag damping cable |
| CN107165049A (en) * | 2017-06-14 | 2017-09-15 | 南昌工程学院 | A kind of vibration absorber in the cable of suspension system for civil engineering structure |
| CN111236038A (en) * | 2020-03-09 | 2020-06-05 | 东南大学 | Novel suspension bridge central authorities detain device |
| CN111877159A (en) * | 2020-09-17 | 2020-11-03 | 何静 | Bridge stay cable damping mechanism |
Non-Patent Citations (1)
| Title |
|---|
| 土木工程结构振动控制技术及其应用研究;汪正兴等;《桥梁建设》;20091020;全文 * |
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| CN113585072A (en) | 2021-11-02 |
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