A damper-adjustable type cable-stayed cable viscous shear damper

Abstract

The application discloses a damper-adjustable type cable-stayed cable viscous shear damper, which comprises a casing body, an auxiliary installation positioning mechanism is arranged at the bottom of the casing body, a cable-stayed cable is connected to the top of the casing body through bolts, a first cable clamp and a second cable clamp are sequentially and fixedly arranged on the surface of the cable-stayed cable from bottom to top, and a damper connecting mechanism is arranged at the left side of the bottom of the cable-stayed cable. Through the cooperation of the first cable clamp, the cable-stayed cable, the second cable clamp, the first connecting rod, the second connecting rod and the connecting shaft pin, the double-cable-clamp double-point connection is adopted, the distance between the double cable clamps is reasonably arranged, the cable clamp position is adjusted, at least one installation point is ensured to avoid the zero displacement point of the high-order vibration mode, the cable-stayed cable can transmit sufficient displacement and speed to the external damper, the effective vibration of the damper is excited, and the damper can provide sufficient additional damping to the cable-stayed cable to inhibit the high-order vibration.

Description

Technical Field

[0001] The present invention relates to the technical field, and in particular to a damping-adjustable stay-cable viscous shear damper. Background Art

[0002] Stay cables are flexible components with a high slenderness ratio and a very low damping ratio, making them susceptible to vibration under wind and other dynamic excitations. Currently, external dampers are often installed near the anchorage ends of stay cables near the main beams to mitigate various cable vibrations. Adjustable damping viscous shear dampers are often used to mitigate cable vibration.

[0003] After searching, the patent number is CN109371814A, and the name is a shear-type built-in damper for inclined cables. The device includes a vibration reduction device and a clamping device for fixing to one end of the cableway tube. Through research and analysis, it is found that although there is an advantage of improving the vibration reduction effect of the damper and greatly reducing the vibration of the inclined cable, there are still the following disadvantages to a certain extent.

[0004] For example, the single-point connection method of a single cable clamp connection can easily cause vibration of a cable longer than 200m. In addition, although the viscous damping medium injected into the viscous shear damper has good durability, its viscosity varies greatly with the ambient temperature. It is easy to be underdamped due to the decrease in the viscosity of the damping medium at high temperatures in summer, and overdamped due to the increase in the viscosity of the damping medium at low temperatures in winter. As a result, the viscous shear damper's damping performance deteriorates or even fails under extreme temperature conditions. In order to solve the above technical problems, we have designed a damping-adjustable viscous shear damper for cable-stayed cables. Summary of the Invention

[0005] The object of the present invention is to provide a damping-adjustable cable-stayed viscous shear damper, which has the advantages of simple structure, convenient adjustment of the viscous damping coefficient, good durability and non-leakage of the viscous material, and can use a single damper to suppress both in-plane and out-of-plane vibrations of the cable at the same time, thus having the advantages of high economy. It solves the problems of poor vibration buffering and poor durability of the viscous medium caused by the single-point connection method.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a damping-adjustable inclined cable viscous shear damper, comprising a casing body, an auxiliary installation and positioning mechanism being provided at the bottom of the casing body, the top of the casing body being connected to the inclined cable by bolts, the surface of the inclined cable being fixedly sleeved with a first cable clamp and a second cable clamp in sequence from bottom to top, a damper connecting mechanism being provided on the left side of the bottom of the inclined cable, the damper connecting mechanism comprising a damper bracket, the top of the damper bracket being connected to the damper body by a connecting flange, the damper body comprising an upper cover plate, the bottom of the upper cover plate being connected to the damper base by bolts, the auxiliary installation and positioning mechanism comprising an installation extension plate, the top of the installation extension plate being welded to the bottom of the casing body.

[0007] Preferably, the top of the damper body is connected to a connecting shaft pin via a bolt, and the second connecting rod and the first connecting rod are movably sleeved on the front and rear sides of the surface of the connecting shaft pin respectively.

[0008] Preferably, the top of the first connecting rod is movably connected to the bottom of the second cable clamp, and the bottom of the second connecting rod is movably connected to the bottom of the first cable clamp.

[0009] Preferably, a fixed vertical rod is welded to the left side of the top of the installation extension plate, a limiting plate is welded to the top of the fixed vertical rod, a movable horizontal plate is movably sleeved on the top surface of the fixed vertical rod, a threaded shaft is penetrated through the right side of the top of the movable horizontal plate, and the bottom of the threaded shaft is movably connected to a clamping plate through a bearing.

[0010] Preferably, a pulling plate is provided on the left side of the movable horizontal plate, a positioning rod is welded at the center of the right side of the pulling plate, the right side of the positioning rod penetrates the inner wall of the movable horizontal plate, a positioning hole is opened on the left side of the fixed vertical rod, the number of the positioning holes is several, and a pulling ring is welded on the left side of the pulling plate.

[0011] Preferably, fixed cross bars are provided on both the upper and lower sides of the left side of the pulling plate, the right side of the fixed cross bar is welded to the movable cross plate, a limiting block is welded on the left side of the fixed cross bar, and a rebound spring is provided on the right side movable sleeve of the surface of the fixed cross bar.

[0012] Preferably, an anti-slip knob is welded to the top of the threaded shaft, and a positioning cone is welded to the right side of the bottom of the clamping plate.

[0013] Preferably, a damper connector is provided through the top of the upper cover plate, M16 screw holes are provided on both sides of the top of the damper connector, positioning bolts are provided through the tops of both sides of the upper cover plate, waterproof rubber is provided on both sides of the upper cover plate, and an anti-detachment protection steel wire is provided at the bottom of the waterproof rubber.

[0014] Compared with the prior art, the application has the following beneficial effects:

[0015] 1、The first cable clamp, the cable, the second cable clamp, the first connecting rod, the second connecting rod and the connecting shaft pin are used in cooperation, the double cable clamp double-point connection is adopted, the distance between the double cable clamps is reasonably arranged, the cable clamp position is adjusted to ensure that at least one installation point avoids the zero displacement point of the high-order vibration mode, the cable can transmit sufficient displacement and speed to the external damper, the effective vibration of the damper is excited, and the damper can provide sufficient additional damping to the cable-stayed cable to inhibit high-order vibration.

[0016] 2、The clamping plate, the positioning cone, the damper main body, the damper support and the damper connecting mechanism are used in cooperation, the depth of the viscous shear type damper plug plate immersed in the damping medium is adjusted to increase or reduce the contact area with the viscous damping medium, and then the damping coefficient of the damper is adjusted. For example, in winter, the viscosity of the viscous damping medium increases, the plug plate is lifted by the adjusting device, the contact area with the viscous damping medium is reduced, the damping performance provided by the damper remains the same as that at normal temperature. In summer, the viscosity of the viscous damping medium decreases, the plug plate is lowered by the adjusting device, the contact area with the viscous damping medium is increased, and the damping performance provided by the damper remains the same as that at normal temperature.

[0017] 3、The movable cross plate, the M16 screw hole, the anti-falling protection steel wire, the damper connecting piece, the upper cover plate, the waterproof rubber and the positioning bolt are used in cooperation, the single-end multi-hole eye bar is used to connect the viscous shear type damper and the double cable clamp, the single-hole end of the eye bar is connected with the viscous shear type damper, the multi-hole end is connected with the cable clamp fixed on the cable-stayed cable, the length of the connecting rod between the damper and the cable clamp is increased or reduced by adjusting the hole position of the pin shaft connected with the ear plate of the cable clamp in the multi-hole end of the eye bar, and then the lifting of the upper cover plate and the plug plate of the viscous shear type damper is realized. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the application;

[0019] Figure 2 It is a connection display schematic diagram of the local structure of the application;

[0020] Figure 3 It is a structural schematic diagram of the application; Figure 1 It is an enlarged view of A in the application;

[0021] Figure 4 It is a left view schematic diagram of the local structure of the application;

[0022] Figure 5 It is a front view schematic diagram of the local structure of the application;

[0023] Figure 6 It is a cross-sectional schematic diagram of a local structure of the present invention;

[0024] Figure 7 For the present invention Figure 6 Enlarged view of middle B;

[0025] Figure 8 It is a bottom view schematic diagram of a partial structure of the present invention;

[0026] Figure 9 It is a left side sectional schematic diagram of the local structure of the present invention.

[0027] In the figure: 1. Casing body; 2. Installation extension plate; 3. Fixed vertical rod; 4. Threaded shaft; 5. Clamping plate; 6. Positioning cone; 7. First cable clamp; 8. Oblique cable; 9. Second cable clamp; 10. First connecting rod; 11. Second connecting rod; 12. Connecting shaft pin; 13. Damper body; 14. Damper bracket; 15. Damper connecting mechanism; 16. Auxiliary installation positioning mechanism; 17. Limit block; 18. Pull ring; 19. Rebound spring; 20. Positioning rod; 21. Fixed cross bar; 22. Positioning hole; 23. Movable cross plate; 24. M16 screw hole; 25. Anti-slip protection wire; 26. Damper connector; 27. Upper cover; 28. Waterproof rubber; 29. ​​Positioning bolt; 30. Pull plate; 31. Damper base. DETAILED DESCRIPTION

[0028] See also Figures 1-9 A damping-adjustable inclined cable viscous shear damper includes a casing body 1, an auxiliary installation and positioning mechanism 16 is provided at the bottom of the casing body 1, the top of the casing body 1 is connected to the inclined cable 8 by bolts, the surface of the inclined cable 8 is fixedly sleeved with a first cable clamp 7 and a second cable clamp 9 from bottom to top, a damper connecting mechanism 15 is provided on the left side of the bottom of the inclined cable 8, the damper connecting mechanism 15 includes a damper bracket 14, the top of the damper bracket 14 is connected to the damper body 13 through a connecting flange, the damper body 13 includes an upper cover plate 27, the bottom of the upper cover plate 27 is connected to the damper base 31 by bolts, the auxiliary installation and positioning mechanism 16 includes an installation extension plate 2, the top of the installation extension plate 2 is welded to the bottom of the casing body 1.

[0029] The top of the damper body 13 is connected to a connecting shaft pin 12 via a bolt, and the second connecting rod 11 and the first connecting rod 10 are movably sleeved on the front and rear sides of the surface of the connecting shaft pin 12 respectively.

[0030] The top of the first connecting rod 10 is movably connected to the bottom of the second cable clamp 9 , and the bottom of the second connecting rod 11 is movably connected to the bottom of the first cable clamp 7 .

[0031] A fixed vertical rod 3 is welded to the left side of the top of the extension plate 2, a limiting plate is welded to the top of the fixed vertical rod 3, a movable horizontal plate 23 is movably sleeved on the top surface of the fixed vertical rod 3, a threaded shaft 4 is penetrated on the right side of the top of the movable horizontal plate 23, and the bottom of the threaded shaft 4 is movably connected to a clamping plate 5 through a bearing.

[0032] A pulling plate 30 is provided on the left side of the movable horizontal plate 23, and a positioning rod 20 is welded at the center of the right side of the pulling plate 30. The right side of the positioning rod 20 penetrates the inner wall of the movable horizontal plate 23, and a positioning hole 22 is opened on the left side of the fixed vertical rod 3. There are several positioning holes 22, and a pulling ring 18 is welded on the left side of the pulling plate 30.

[0033] A fixed cross bar 21 is provided on both the upper and lower sides of the left side of the pulling plate 30. The right side of the fixed cross bar 21 is welded to the movable cross plate 23. The left side of the fixed cross bar 21 is welded with a limiting block 17. The right side movable sleeve on the surface of the fixed cross bar 21 is provided with a rebound spring 19.

[0034] An anti-slip knob is welded to the top of the threaded shaft 4 , and a positioning cone 6 is welded to the right side of the bottom of the clamping plate 5 .

[0035] A damper connector 26 is provided through the top of the upper cover plate 27, and M16 screw holes 24 are provided on both sides of the top of the damper connector 26. Positioning bolts 29 are provided through the tops of both sides of the upper cover plate 27. Waterproof rubber 28 is provided on both sides of the upper cover plate 27, and an anti-slip protection steel wire 25 is provided at the bottom of the waterproof rubber 28.

[0036] By setting a limit plate, the movable horizontal plate 23 can be limited to prevent it from falling off the surface of the fixed vertical rod 3;

[0037] By providing a rebound spring 19, after the user releases the pull ring 18, the elastic force generated by the recovery deformation drives the pull plate 30 to reset;

[0038] By providing the limiting block 17, the pulling plate 30 can be limited to prevent it from falling off the surface of the fixed cross bar 21;

[0039] By providing a movable horizontal plate 23, the height of the threaded shaft 4 can be adjusted to improve the applicability of the main body;

[0040] By providing an anti-slip knob, it is easy for the user to hold it, thereby facilitating the user to rotate the threaded shaft 4;

[0041] By providing the bearing, the threaded shaft 4 can be balanced and supported, thereby facilitating the installation and use of the threaded shaft 4;

[0042] By setting the first connecting rod 10 and the second connecting rod 11, the length of the connecting rod between the damper and the cable clamp can be increased or decreased, thereby realizing the lifting of the upper cover plate 27 of the viscous shear type damper and the plug plate;

[0043] Embodiment one:

[0044] A damping adjustable type cable viscous shear damper, comprising a casing body 1, an auxiliary installation positioning mechanism 16 is arranged at the bottom of the casing body 1, a cable 8 is connected to the top of the casing body 1 through bolts, a first cable clamp 7 and a second cable clamp 9 are sequentially fixed on the surface of the cable 8 from bottom to top, a damper connecting mechanism 15 is arranged at the left side of the bottom of the cable 8, the damper connecting mechanism 15 comprises a damper support 14, a damper body 13 is connected to the top of the damper support 14 through a connecting flange, the damper body 13 comprises an upper cover plate 27, a damper base 31 is connected to the bottom of the upper cover plate 27 through bolts, the auxiliary installation positioning mechanism 16 comprises an installation extension plate 2, and the top of the installation extension plate 2 is welded to the bottom of the casing body 1.

[0045] A connecting shaft pin 12 is connected to the top of the damper body 13 through bolts, and a second connecting rod 11 and a first connecting rod 10 are movably sleeved on the front and back surfaces of the connecting shaft pin 12.

[0046] The top of the first connecting rod 10 is movably connected to the bottom of the second cable clamp 9, and the bottom of the second connecting rod 11 is movably connected to the bottom of the first cable clamp 7.

[0047] A fixed vertical rod 3 is welded to the left side of the top of the installation extension plate 2, a limiting plate is welded to the top of the fixed vertical rod 3, a movable cross plate 23 is movably sleeved on the top surface of the fixed vertical rod 3, a threaded shaft 4 is arranged on the right side of the top of the movable cross plate 23 in a penetrating mode, and a clamping plate 5 is movably connected to the bottom of the threaded shaft 4 through a bearing.

[0048] A pulling plate 30 is arranged on the left side of the movable cross plate 23, a positioning rod 20 is welded to the right side of the center of the pulling plate 30, the right side of the positioning rod 20 penetrates into the inner wall of the movable cross plate 23, a plurality of positioning holes 22 are arranged on the left side of the fixed vertical rod 3, and a pulling ring 18 is welded to the left side of the pulling plate 30.

Claims

1. A damping-adjustable stay cable viscous shear damper, comprising a casing body (1), characterized in that: The bottom of the casing body (1) is provided with an auxiliary installation positioning mechanism (16), the top of the casing body (1) is connected to an inclined cable (8) by bolts, the surface of the inclined cable (8) is fixedly sleeved with a first cable clamp (7) and a second cable clamp (9) in sequence from bottom to top, a damper connection mechanism (15) is provided on the left side of the bottom of the inclined cable (8), the damper connection mechanism (15) includes a damper bracket (14), the top of the damper bracket (14) is connected to the damper body (13) by a connecting flange, the damper body (13) includes an upper cover plate (27), the bottom of the upper cover plate (27) is connected to the damper base (31) by bolts, the top of the damper body (13) is connected to a connecting shaft pin (12) by bolts, the connecting shaft pin (12) The front and rear sides of the surface are movably sleeved with a second connecting rod (11) and a first connecting rod (10), the top of the first connecting rod (10) is movably connected to the bottom of the second cable clamp (9), and the bottom of the second connecting rod (11) is movably connected to the bottom of the first cable clamp (7). The auxiliary installation positioning mechanism (16) includes an installation extension plate (2), the top of the installation extension plate (2) is welded to the bottom of the casing body (1), a fixed vertical rod (3) is welded to the left side of the top of the installation extension plate (2), a limiting plate is welded to the top of the fixed vertical rod (3), a movable horizontal plate (23) is movably sleeved on the top of the surface of the fixed vertical rod (3), a threaded shaft (4) is penetrated on the right side of the top of the movable horizontal plate (23), and the bottom of the threaded shaft (4) is movably connected to a clamping plate (5) through a bearing.

2. The damping-adjustable stay cable viscous shear damper according to claim 1, characterized in that: A pulling plate (30) is provided on the left side of the movable horizontal plate (23), a positioning rod (20) is welded at the center of the right side of the pulling plate (30), and the right side of the positioning rod (20) penetrates the inner wall of the movable horizontal plate (23), and a positioning hole (22) is opened on the left side of the fixed vertical rod (3), and the number of the positioning holes (22) is several. A pulling ring (18) is welded on the left side of the pulling plate (30).

3. The damping-adjustable stay cable viscous shear damper according to claim 2, characterized in that: A fixed cross bar (21) is provided on both upper and lower sides of the left side of the pulling plate (30), the right side of the fixed cross bar (21) is welded to the movable cross plate (23), a limiting block (17) is welded to the left side of the fixed cross bar (21), and a rebound spring (19) is provided on the right side of the surface of the fixed cross bar (21).

4. The damping-adjustable stay cable viscous shear damper according to claim 1, characterized in that: An anti-slip knob is welded to the top of the threaded shaft (4), and a positioning cone (6) is welded to the right side of the bottom of the clamping plate (5).

5. The damping-adjustable stay cable viscous shear damper according to claim 1, characterized in that: A damper connector (26) is provided through the top of the upper cover plate (27), M16 screw holes (24) are provided on both sides of the top of the damper connector (26), positioning bolts (29) are provided through the top of both sides of the upper cover plate (27), waterproof rubber (28) is provided on both sides of the upper cover plate (27), and an anti-slip protection steel wire (25) is provided at the bottom of the waterproof rubber (28).

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