Damping cable saddle

Abstract

The utility model discloses a damping cable saddle which comprises a saddle body used for fixing a main cable. The base is connected with the main tower; wherein a mounting groove is formed in the base, the saddle body is arranged in the mounting groove, a lubricating structure is arranged between the bottom face of the saddle body and the mounting groove, buffering energy consumption pieces are arranged between the saddle body and bosses at the two ends of the mounting groove, and the two ends of the buffering energy consumption pieces make contact with the bosses and the saddle body correspondingly. The saddle body is further connected with the bosses at the two ends of the installation groove through pre-tightening structures. The saddle body and the base are connected through the pre-tightening structure, when a strong earthquake occurs, the pre-tightening structure is damaged firstly, the saddle body and the base are separated, the saddle body moves under the action of earthquake energy of the main cable and extrudes the buffering energy dissipation piece, namely, the buffering energy dissipation piece arranged between the saddle body and the base can absorb part of the earthquake energy, and therefore the buffering energy dissipation piece can absorb part of the earthquake energy. Earthquake energy transmitted to the main tower is reduced, namely, the rigidity requirement and the construction cost of the main tower can be effectively reduced, and meanwhile, the safety of the suspension bridge is facilitated.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridges, and particularly relates to a shock-absorbing saddle. Background Art

[0002] A saddle is a structure specifically designed for a suspension cable to bypass the top of a tower and smoothly change the direction of the main cable. A cable groove is provided on the saddle for connecting with the main cable to transfer the pressure transmitted by the main cable to the main tower.

[0003] At present, the traditional saddle is fixedly connected to the main tower. For example, Chinese invention patent CN114808697A discloses a construction structure system and construction method for a main saddle with a large pre-deviation amount. The permanent base is fixed in the central area of the top surface of the main tower. When an earthquake occurs, only the deformation of the main tower can be relied on to adapt to the earthquake energy. As the construction length of the suspension bridge becomes longer and longer, the stiffness requirement for the main tower becomes higher and higher, increasing the construction cost of the main tower. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a shock-absorbing saddle to overcome the defects of the prior art. The saddle body and the base are connected through a pre-tightening structure. When a strong earthquake occurs, the pre-tightening structure is first damaged, causing the saddle body to separate from the base. The saddle body displaces under the action of the earthquake energy of the main cable and squeezes the buffer energy dissipation component. That is, the buffer energy dissipation component arranged between the saddle body and the base can absorb part of the earthquake energy, reduce the earthquake energy transmitted to the main tower, effectively reduce the stiffness requirement and construction cost of the main tower, and is beneficial to the safety of the suspension bridge.

[0005] The purpose of the utility model is achieved by the following technical solutions:

[0006] A shock-absorbing saddle, comprising:

[0007] A saddle body for fixing the main cable;

[0008] A base connected to the main tower;

[0009] Wherein, an installation groove is formed on the base, the saddle body is arranged in the installation groove, a lubrication structure is arranged between the bottom surface of the saddle body and the installation groove, and a buffer energy dissipation component is arranged between the saddle body and the bosses at both ends of the installation groove. Both ends of the buffer energy dissipation component are respectively in contact with the boss and the saddle body, and the saddle body is also connected to the bosses at both ends of the installation groove through a pre-tightening structure.

[0010] In one embodiment, the pre-tightening structure includes a stop block arranged on the side wall of the saddle body, the stop block extends above the boss, the buffer energy dissipation component is located below the stop block, and the stop block is connected to the boss through a first shear pin extending in the vertical direction.

[0011] In one embodiment, the pre-tightening structure includes a first baffle provided on the side wall of the saddle body and a second baffle provided on the convex platform. The second baffle is connected to the convex platform by a second shear pin extending in the vertical direction, and the second baffle is connected to the first baffle by a third shear pin extending in the vertical direction. The shear strength of the third shear pin is less than that of the second shear pin, and the buffer energy dissipation member is located below the second baffle.

[0012] In one embodiment, the lubrication structure is a tetrafluoroethylene sliding plate provided in the installation groove, and the buffer energy dissipation member and the saddle body are both provided on the tetrafluoroethylene sliding plate.

[0013] In one embodiment, the lubrication structure includes a plurality of lubricating members embedded in the saddle body, and the end surface of the lubricating member contacts the installation groove to form a lubricating surface.

[0014] In one embodiment, the lubricating member is a solid lubricating column.

[0015] In one embodiment, a plurality of grooves evenly spaced are provided at the bottom of the saddle body, and the lubricating members are embedded in the grooves.

[0016] In one embodiment, a plurality of buffer grooves corresponding to the positions of the grooves are further formed in the saddle body, and a compressed buffer spring is provided in each buffer groove. One end of the buffer spring contacts the buffer groove, and the other end contacts the end surface of the lubricating member.

[0017] In one embodiment, the lubrication structure includes a plurality of roller shafts provided at the bottom of the saddle body.

[0018] In one embodiment, the buffer energy dissipation member is made of buffer foam.

[0019] The beneficial effects of the present utility model are as follows:

[0020] (1) The saddle body is connected to the base by using the pre-tightening structure. When the seismic energy received exceeds the pre-tightening strength of the pre-tightening structure, the saddle body is separated from the base. The saddle body displaces under the action of the seismic energy and squeezes the buffer energy dissipation member, and the buffer energy dissipation member between the saddle body and the base can absorb the seismic energy received by the main cable, reduce the seismic energy transmitted to the main tower, lower the stiffness requirement and construction cost of the main tower, and at the same time ensure the safety of the suspension bridge;

[0021] (2) The second shear pin and the third shear pin with different shear strengths in the pre-tightening structure can separate the saddle body from the main tower under earthquakes of different intensities, and then squeeze the buffer energy dissipation member, reducing the seismic energy transmitted to the main tower, and lowering the stiffness requirement and construction cost of the main tower. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present utility model will be described in more detail below based on embodiments with reference to the accompanying drawings.

[0023] Wherein:

[0024] Figure 1 shows a schematic structural diagram of an embodiment of the present utility model;

[0025] Figure 2 shows a schematic structural diagram of another embodiment of the present utility model;

[0026] Figure 3 shows Figure 1 a partially enlarged schematic structural diagram of an embodiment at position A in

[0027] Figure 4 shows Figure 1 a partially enlarged schematic structural diagram of an embodiment at position A in

[0028] Figure 5 shows Figure 1 a partially enlarged schematic structural diagram of an embodiment at position A in

[0029] Figure 6 shows a schematic structural diagram of an embodiment of the pre-tightening structure of the present utility model;

[0030] In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale.

[0031] Reference Numerals:

[0032] 1 - saddle body, 2 - main cable, 3 - base, 4 - mounting groove, 5 - stop block, 6 - boss, 7 - first shear pin, 8 - second shear pin, 9 - third shear pin, 10 - tetrafluoroethylene slide plate, 11 - solid lubricating column, 12 - buffer spring, 13 - roller, 14 - buffer energy dissipating member, 15 - first baffle, 16 - second baffle, 17 - rack, 18 - pin shaft, 19 - driving member, 20 - ratchet wheel, 21 - ratchet pawl, 22 - compression spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0033] The present utility model will be further described below in conjunction with the accompanying drawings.

[0034] The present utility model provides a shock-absorbing cable saddle, as Figure 1 shown, comprising:

[0035] A saddle body 1 for fixing the main cable 2;

[0036] A base 3 connected to the main tower;

[0037] Among them, an installation groove 4 is formed on the base 3, the saddle body 1 is arranged in the installation groove 4, a lubricating structure is arranged between the bottom surface of the saddle body 1 and the installation groove 4, and a buffer energy dissipation member 14 is arranged between the saddle body 1 and the bosses 6 at both ends of the installation groove 4. The two ends of the buffer energy dissipation member 14 are respectively in contact with the boss 6 and the saddle body 1, and the saddle body 1 is also connected to the bosses 6 at both ends of the installation groove 4 through a pre-tightening structure;

[0038] It should be noted that the saddle body 1 is connected to the base 3 by using a pre-tightening structure. When the seismic energy received exceeds the pre-tightening strength of the pre-tightening structure, the saddle body 1 is separated from the base 3. Under the action of the seismic energy of the main cable 2, the saddle body 1 slides through the lubricating structure, and then squeezes the buffer energy dissipation member 14. That is, the buffer energy dissipation member 14 between the saddle body 1 and the base 3 can absorb the seismic energy received by the main cable 2, reduce the seismic energy transmitted to the main tower, lower the stiffness requirement and construction cost of the main tower, and at the same time ensure the safety of the suspension bridge;

[0039] Specifically, as Figure 3 shown, the pre-tightening structure includes a stop block 5 arranged on the side wall of the saddle body 1. The stop block 5 extends above the boss 6. The buffer energy dissipation member 14 is located below the stop block 5. The stop block 5 is connected to the boss 6 through a first shear pin 7 extending in the vertical direction. That is, when the seismic intensity exceeds the shear strength of the first shear pin 7, the saddle body 1 is separated from the base 3. The saddle body 1 slides in the base 3 and squeezes the buffer energy dissipation member 14, reducing the seismic energy transmitted to the main tower and lowering the stiffness requirement and construction cost of the main tower;

[0040] In an embodiment, as Figure 2 shown, the pre-tightening structure includes a first baffle 15 arranged on the side wall of the saddle body 1 and a second baffle 16 arranged on the boss 6. The second baffle 16 is connected to the boss 6 through a second shear pin 8 extending in the vertical direction. The second baffle 16 and the first baffle 15 are connected through a third shear pin 9 extending in the vertical direction. The shear strength of the third shear pin 9 is less than the shear strength of the second shear pin 8. The buffer energy dissipation member 14 is located below the second baffle 16;

[0041] It should be noted that the pre-tightening structure can form multi-stage pre-tightening, such as Figure 2As shown in the figure, a second baffle 16 is arranged on the boss 6 through a second shear pin 8, and the second baffle 16 is connected to the first baffle 15 of the saddle body 1 through a third shear pin 9. The shear strength of the third shear pin 9 is less than that of the second shear pin 8. That is, when the earthquake intensity is greater than the shear strength of the third shear pin 9 and less than the shear strength of the second shear pin 8, the third shear pin 9 breaks, and the saddle body 1 is separated from the base 3. The end of the second baffle 16 is used as the maximum displacement point to squeeze the buffer energy dissipation member 14. When the earthquake intensity increases, the saddle body 1 transfers the earthquake energy to the second baffle 16. When it is greater than the shear strength of the second shear pin 8, the second shear pin 8 breaks, and the saddle body 1 uses the boss 6 of the installation groove 4 as the maximum displacement point, increasing the movable distance of the saddle body 1, that is, increasing the energy that the buffer energy dissipation member 14 can absorb, so as to adapt to earthquakes of greater intensity. That is, the energy absorbed by the buffer energy dissipation member 14 can increase step by step with the earthquake intensity, so that the saddle body 1 can be separated from the main tower under earthquakes of different intensities, and then squeeze the buffer energy dissipation member 14 to varying degrees, reducing the earthquake energy transmitted to the main tower and reducing the stiffness requirements and construction costs of the main tower;

[0042] In one embodiment, as Figure 3 shown, the lubrication structure is a tetrafluoroethylene slide plate 10 arranged in the installation groove 4, and the saddle body 1 is arranged on the tetrafluoroethylene slide plate 10, that is, the saddle body 1 slides on the tetrafluoroethylene slide plate 10 in a surface contact manner;

[0043] In one embodiment, as Figure 4 shown, the lubrication structure includes a plurality of lubricating members embedded in the saddle body 1. The end surface of the lubricating member contacts the installation groove 4 to form a lubricating surface, and the lubricating member is a solid lubricating column 11;

[0044] Further, as Figure 4 shown, a plurality of grooves evenly spaced are provided at the bottom of the saddle body 1, and the lubricating members are embedded in the grooves. A plurality of buffer grooves corresponding to the positions of the grooves are also formed in the saddle body 1. A compressed buffer spring 12 is arranged in each buffer groove. One end of the buffer spring 12 contacts the buffer groove, and the other end contacts the end surface of the lubricating member;

[0045] It should be noted that the solid lubricating column 11 is used as a lubricating point, and a plurality of solid lubricating columns 11 embedded in the saddle body 1 form a lubricating surface, enabling the saddle body 1 to slide and squeeze the buffer energy dissipation member 14 in the installation groove 4 of the base 3. At the same time, the arranged buffer spring 12 can continuously act on the solid lubricating column 11, enabling it to still be in full contact with the installation groove 4 of the base 3 after wear and maintaining a complete lubricating surface;

[0046] In one embodiment, as Figure 5As shown, the lubrication structure includes a plurality of roller shafts 13 provided at the bottom of the saddle body 1. That is, the roller shaft 13 structure can also be utilized, and the roller shaft 13 is arranged between the saddle body 1 and the installation groove 4 of the base 3 for the saddle body 1 to slide and extrude the buffer energy-consuming member 14;

[0047] In one embodiment, the buffer energy-consuming member 14 is made of buffer foam and can also be made of other buffer materials;

[0048] In one embodiment, as Figure 6 shown, the pre-tightening structure includes a stop block 5 provided on the side wall of the saddle body 1. The stop block 5 extends above the boss 6. The bottom of the stop block 5 has a rack 17. A driving member 19 capable of meshing with the rack 17 is provided on the boss 6. The driving member 19 is installed on one side of the boss through a pin shaft 18. A ratchet 20 and a pawl 21 located inside the inner ring of the ratchet 20 are provided on the driving member 19. The pawl 21 is installed on the side wall of the driving member 19 through a compression spring 22. That is, in the normal state, the racks 17 on both sides of the stop block 5 are meshed with the driving member 19, and the saddle body 1 and the base 3 are connected to each other. When an earthquake occurs, under the action of the earthquake acceleration, the pawl 21 contacts the ratchet 20 and drives the ratchet 20 to rotate, thereby driving the driving member 19 to rotate, so that the saddle body 1 and the base 3 are separated from each other;

[0049] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "bottom", "top", "front", "rear", "inner", "outer", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0050] Although the present invention has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed as long as they do not deviate from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the different dependent claims and the features described herein can be combined in a manner different from that described in the original claims. It should also be understood that the features described in connection with a single embodiment can be used in other described embodiments.

Claims

1. A shock-absorbing cable saddle, characterized in that, Comprising: A saddle body for fixing the main cable; A base connected to the main tower; Wherein, an installation groove is formed on the base, the saddle body is arranged in the installation groove, a lubrication structure is arranged between the bottom surface of the saddle body and the installation groove, and a buffer energy dissipation member is arranged between the saddle body and the bosses at both ends of the installation groove. Both ends of the buffer energy dissipation member are respectively in contact with the boss and the saddle body, and the saddle body is also connected to the bosses at both ends of the installation groove through a pre-tightening structure.

2. The shock-absorbing cable saddle according to claim 1, wherein The pre-tightening structure includes a stop block arranged on the side wall of the saddle body, the stop block extends above the boss, the buffer energy dissipation member is located below the stop block, and the stop block is connected to the boss through a first shear pin extending in the vertical direction.

3. The shock-absorbing cable saddle according to claim 1, characterized in that, The pre-tightening structure includes a first baffle arranged on the side wall of the saddle body and a second baffle arranged on the boss. The second baffle is connected to the boss through a second shear pin extending in the vertical direction, and the second baffle is connected to the first baffle through a third shear pin extending in the vertical direction. The shear strength of the third shear pin is less than that of the second shear pin, and the buffer energy dissipation member is located below the second baffle.

4. A damping cable saddle according to claim 2 or 3, characterized in that, The lubrication structure is a tetrafluoroethylene slide plate arranged in the installation groove, and the buffer energy dissipation member and the saddle body are both arranged on the tetrafluoroethylene slide plate.

5. A shock-absorbing cable saddle according to claim 2 or 3, characterized in that, The lubrication structure includes a plurality of lubricating members embedded in the saddle body, and the end surface of the lubricating member is in contact with the installation groove to form a lubricating surface.

6. The shock-absorbing cable saddle according to claim 5, wherein, The lubricating member is a solid lubricating column.

7. The shock-absorbing cable saddle according to claim 5, characterized in that, A plurality of grooves are uniformly spaced and distributed at the bottom of the saddle body, and the lubricating members are embedded in the grooves.

8. The shock-absorbing cable saddle according to claim 7, characterized in that, A plurality of buffer grooves corresponding to the positions of the grooves are also formed in the saddle body, and a compressed buffer spring is arranged in each buffer groove. One end of the buffer spring is in contact with the buffer groove, and the other end is in contact with the end surface of the lubricating member.

9. A shock-absorbing cable saddle according to claim 2 or 3, characterized in that, The lubrication structure includes a plurality of roller shafts arranged at the bottom of the saddle body.

10. A damping cable saddle according to claim 1, characterized in that, The buffer energy dissipation member is made of buffer foam.

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