Suspension bridge main cable saddle pushing system

Abstract

The utility model discloses a main cable saddle pushing system of a suspension bridge. The main cable saddle pushing system aims to effectively reduce frictional resistance during pushing and sliding of a main cable saddle. Therefore, the main cable saddle pushing system of the suspension bridge comprises a tower top grid and a main cable saddle body, a pushing sliding plate is arranged at the bottom of the main cable saddle body, and an anti-friction sliding plate in sliding fit with the pushing sliding plate is arranged at the top of the tower top grid. The tower top grating is further provided with a pushing oil cylinder pushing the main cable saddle body to slide on the antifriction sliding plate, and the tower top grating is characterized in that a plurality of oil storage cavities are evenly distributed on the sliding friction working face of the antifriction sliding plate, each oil storage cavity is filled with lubricating oil, the top of each oil storage cavity is provided with a check ring extending inwards, and the check rings are arranged on the top of the tower top grating. The floating ball floating on the lubricating oil in the oil storage cavity partially leaks out of the sliding friction working face, and the diameter of the floating ball is larger than the inner diameter of the check ring.

Description

Technical Field

[0001] The utility model belongs to the technical field of cable saddle installation, in particular to a main cable saddle jacking system for a suspension bridge. Background Art

[0002] The jacking of the cable saddles on the main towers of suspension bridges is an important part of the construction process of suspension bridges. Its purpose is to ensure that during the installation and construction of the main beam, when the main cable forces of the middle and side spans continue to change, the main cable saddles can be frequently jacked and adjusted to adapt to the changes in the main cable forces and ensure the stability and safety of the bridge structure. The current jacking of the main cable saddles is basically achieved through sliding friction pairs. The existing sliding friction pairs are only lubricated by the lubrication properties of the friction-reducing slides themselves. The resistance of the main cable saddle during jacking and sliding is large. In severe cases, the cable saddle top may even be blocked, which seriously affects the construction progress. Summary of the invention

[0003] The main purpose of the utility model is to provide a main cable saddle jacking system for a suspension bridge, aiming to effectively reduce the friction resistance when the main cable saddle is jacked and slipped.

[0004] To this end, the utility model provides a main cable saddle pushing system for a suspension bridge, comprising a tower top grid and a main cable saddle body, wherein a pushing slide is provided at the bottom of the main cable saddle body, a friction reduction slide is provided at the top of the tower top grid which slides with the pushing slide, and a pushing cylinder is provided on the tower top grid which pushes the main cable saddle body to slide on the friction reduction slide. The utility model is characterized in that: a plurality of oil storage cavities are evenly distributed on the sliding friction working surface of the friction reduction slide, each of the oil storage cavities is filled with lubricating oil, a retaining ring extending inwardly is provided on the top of each of the oil storage cavities, a floating ball floating on the lubricating oil in the oil storage cavity partially leaks out of the sliding friction working surface, and the diameter of the floating ball is larger than the inner diameter of the retaining ring.

[0005] Specifically, a plurality of through holes are evenly distributed on the anti-friction slide plate, and the anti-friction slide plate is mounted on the tower top grid through the mounting plate, and the mounting plate blocks the bottom of the through holes, thereby forming the oil storage chamber.

[0006] Specifically, the anti-friction sliding plate is fixedly connected to the mounting plate by a bolt assembly, and adhesive is provided on the joint surface.

[0007] Specifically, a pair of guide plates parallel to the pushing direction of the pushing cylinder are further provided on the tower top grid, and the pair of guide plates are symmetrically arranged on both sides of the main cable saddle body.

[0008] Specifically, a reaction frame is provided on the tower top grid, one end of the jacking oil cylinder is fixedly connected to the reaction frame, and the other end is connected to the main cable saddle body, and a thrust block is also provided at the end of the tower top grid opposite to the jacking oil cylinder.

[0009] Compared with the prior art, the utility model has the following beneficial effects: an oil storage cavity is arranged on the friction-reducing slide plate, and a float is arranged in the oil storage cavity, the float floats on the surface of the lubricating oil, and partially leaks out from the sliding friction working surface of the friction-reducing slide plate; when the main cable saddle body is pushed through the float, the float is squeezed by the main cable saddle body and sinks into the lubricating oil, and squeezes the lubricating oil out of the oil storage cavity, thereby achieving lubrication of the friction-reducing slide plate, thereby effectively reducing the friction resistance of the main cable saddle body when it is pushed. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0011] Figure 1 It is a structural schematic diagram of the main cable saddle jacking system of a suspension bridge provided by an embodiment of the utility model;

[0012] Figure 2 It is a schematic diagram of the structure of the friction-reducing slide plate provided in an embodiment of the utility model;

[0013] Among them: 1. Tower top grille; 2. Main cable saddle; 3. Push slide; 4. Anti-friction slide; 5. Push cylinder; 6. Oil storage chamber; 7. Lubricating oil; 8. Retaining ring; 9. Float; 10. Main cable; 11. Mounting plate; 12. Guide plate; 13. Reaction frame; 14. Thrust block. DETAILED DESCRIPTION

[0014] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0015] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0016] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0017] See also Figure 1 and Figure 2 A main cable saddle jacking system for a suspension bridge comprises a tower top grid 1 and a main cable saddle body 2. The tower top grid 1 is pre-buried in the tower top concrete. A jacking slide plate 3 is provided at the bottom of the main cable saddle body 2. A friction reduction slide plate 4 which slides with the jacking slide plate 3 is provided at the top of the tower top grid 1. A jacking cylinder 5 which pushes the main cable saddle body 2 to slide on the friction reduction slide plate 4 is also provided on the tower top grid 1. A plurality of oil storage cavities 6 are evenly distributed on the sliding friction working surface of the friction reduction slide plate 4. Each oil storage cavity 6 is filled with lubricating oil 7. A retaining ring 8 extending inward is provided at the top of each oil storage cavity 6. A floating ball 9 floating on the lubricating oil 7 in the oil storage cavity 6 partially leaks out of the sliding friction working surface. The diameter of the floating ball 9 is larger than the inner diameter of the retaining ring 8. The retaining ring 8 is designed to limit the floating ball 9 to prevent the floating ball 9 from escaping from the top of the oil storage cavity 6. Among them, the friction-reducing slide plate 4 can be made of a polytetrafluoroethylene plate or other plates with a low friction coefficient. The top of the main cable saddle body 2 is provided with a slide groove for the main cable 10 to pass through. The float 9 is made of a material with a density smaller than that of the lubricating oil 7. It only needs to ensure that it can float on the lubricating oil 7. No further details will be given here.

[0018] In this embodiment, an oil storage chamber 6 is provided on the friction-reducing slide 4, and a float 9 is provided in the oil storage chamber 6. The float 9 floats on the liquid surface of the lubricating oil 7 and partially leaks out from the sliding friction working surface of the friction-reducing slide 4. When the main cable saddle 2 is pushed through the float 9, the float 9 is squeezed by the main cable saddle 2 and sinks into the lubricating oil 7, and squeezes the lubricating oil 7 out of the oil storage chamber 6 to achieve lubrication of the friction-reducing slide 4, thereby effectively reducing the friction resistance when the main cable saddle 2 is pushed. Compared with the prior art, directly applying the lubricating oil 7 and storing the lubricating oil 7 in the oil storage chamber 6 can effectively reduce the risk of the lubricating oil 7 being contaminated by external debris.

[0019] See also Figure 1 and Figure 2 , a plurality of through holes are evenly distributed on the anti-friction slide plate 4, and the anti-friction slide plate 4 is installed on the tower top grid 1 through the mounting plate 11, and the mounting plate 11 blocks the bottom of the through hole, thereby forming the oil storage chamber 6. In this embodiment, because the top diameter of the oil storage chamber 6 is smaller than the diameter of the float 9, the float 9 cannot be directly installed from the top of the oil storage chamber 6. By providing a through hole on the anti-friction slide plate 4 and using the mounting plate 11 to block the bottom of the through hole to form the oil storage chamber 6, the float 9 can be conveniently loaded into the oil storage chamber 6 from the bottom of the through hole.

[0020] Specifically, the anti-friction slide plate 4 and the mounting plate 11 are fixedly connected by a bolt assembly. To ensure the reliability of the seal and prevent oil leakage, adhesive may be applied on the joint surface between the anti-friction slide plate 4 and the mounting plate 11 .

[0021] See also Figure 1 In some embodiments, a pair of guide plates 12 parallel to the pushing direction of the pushing cylinder 5 are also provided on the tower top grid 1. The pair of guide plates 12 are symmetrically arranged on both sides of the main cable saddle body 2. The guide plates 12 are used to guide the pushing of the main cable saddle body 2 to prevent deviation during the pushing process.

[0022] See also Figure 1 Specifically, a reaction frame 13 is provided on the tower top grid 1, one end of the pushing cylinder 5 is fixedly connected to the reaction frame 13, and the other end is connected to the main cable saddle body 2. A thrust block 14 is also provided at the end of the tower top grid 1 opposite to the pushing cylinder 5, and the pushing distance is limited by the thrust block 14. The specific installation position of the thrust block 14 can be adaptively selected by those skilled in the art according to actual working conditions, and will not be repeated here.

[0023] Unless otherwise stated, any technical solution disclosed in the above utility model, if it discloses a numerical range, then the disclosed numerical range is a preferred numerical range, and any technician in the field should understand that the preferred numerical range is only a numerical value with a more obvious technical effect or representative value among many implementable numerical values. Since there are too many numerical values ​​to be exhaustive, the utility model discloses only some numerical values ​​to illustrate the technical solution of the present invention, and the numerical values ​​listed above should not constitute a limitation on the scope of protection of the invention.

[0024] At the same time, if the above-mentioned utility model discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, connected by bolts or screws), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by one-piece molding using a casting process) (except when it is obviously impossible to use an one-piece molding process).

[0025] In addition, the terms used in any technical solution disclosed in the above utility model to indicate positional relationship or shape include the state or shape that is similar, similar or close to it unless otherwise stated. Any component provided by the utility model can be assembled from multiple separate components, or it can be a separate component manufactured by an integrated molding process.

[0026] The above embodiments are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. The obvious changes or modifications derived from these are still within the scope of protection of the present invention.

Claims

1. A main cable saddle jacking system for a suspension bridge, comprising a tower top grid (1) and a main cable saddle body (2), wherein a jacking slide plate (3) is provided at the bottom of the main cable saddle body (2), a friction reduction slide plate (4) is provided at the top of the tower top grid (1) and is slidably matched with the jacking slide plate (3), and a jacking oil cylinder (5) is also provided on the tower top grid (1) to push the main cable saddle body (2) to slide on the friction reduction slide plate (4), characterized in that: A plurality of oil storage chambers (6) are evenly distributed on the sliding friction working surface of the anti-friction slide plate (4), each of the oil storage chambers (6) is filled with lubricating oil (7), a retaining ring (8) extending inward is provided on the top of each of the oil storage chambers (6), a floating ball (9) floating on the lubricating oil (7) in the oil storage chamber (6) partially leaks out of the sliding friction working surface, and the diameter of the floating ball (9) is larger than the inner diameter of the retaining ring (8).

2. The main cable saddle pushing system for a suspension bridge according to claim 1 is characterized in that: The anti-friction slide plate (4) is evenly provided with a plurality of through holes. The anti-friction slide plate (4) is mounted on the tower top grid (1) via a mounting plate (11). The mounting plate (11) blocks the bottom of the through holes, thereby forming the oil storage chamber (6).

3. The main cable saddle pushing system for a suspension bridge according to claim 2 is characterized in that: The anti-friction slide plate (4) and the mounting plate (11) are fixedly connected via a bolt assembly, and adhesive is provided on the joint surface.

4. The main cable saddle pushing system for a suspension bridge according to any one of claims 1 to 3, characterized in that: The tower top grid (1) is also provided with a pair of guide plates (12) parallel to the pushing direction of the pushing oil cylinder (5), and the pair of guide plates (12) are symmetrically arranged on both sides of the main cable saddle body (2).

5. The main cable saddle pushing system for a suspension bridge according to claim 4 is characterized in that: A reaction frame (13) is provided on the tower top grid (1); one end of the push cylinder (5) is fixedly connected to the reaction frame (13) and the other end is connected to the main cable saddle body (2); and a thrust block (14) is also provided on the end of the tower top grid (1) opposite to the push cylinder (5).

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