Telescopic hanging basket structure for repairing and maintaining variable cross-section cable bent tower

Abstract

The utility model discloses a telescopic hanging basket structure for repairing and maintaining a variable cross-section cable bent tower, which comprises a telescopic hanging basket and a support frame structure arranged at the top of the cable bent tower, and the telescopic hanging basket is connected with the support frame structure through an inhaul cable and is driven by a winch to lift along the height direction of the cable bent tower. The telescopic hanging basket is of a U-like structure arranged on the periphery of the cable bent tower and comprises a bottom plate, a top plate and a plurality of pieces of profile steel connecting the top plate and the bottom plate into a whole, the top plate and the bottom plate are each of a telescopic structure in the transverse direction and the longitudinal direction, and the bottom plate correspondingly comprises telescopic rod pieces in the transverse direction and the longitudinal direction. The telescopic hanging basket is driven by the telescopic oil cylinder to stretch out and draw back so as to adjust the transverse length and the longitudinal length of the telescopic hanging basket. The hanging basket structure is telescopic, so that the hanging basket structure can be completely matched with the section of the cable bent tower at different construction positions, and convenience in maintenance of the cable bent tower is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge engineering, and more specifically, to a telescopic hanging basket structure for maintenance of variable-section cable towers. Background Art

[0002] Under long-term operation, bridges are affected by factors such as the environment, traffic, and the material's own properties, resulting in different damages in certain parts of the bridge. Typical structural defects require timely repair and maintenance to ensure the durability of the structure. This will also contribute to the safety, reliability, durability of the bridge throughout its life cycle and significantly enhance and improve the technical condition of the bridge.

[0003] Cable towers are important components of cable-stayed bridges and suspension bridges, and their construction quality affects the overall quality of the bridge. There are problems in construction such as high bridge towers, strong sea breezes, high construction safety risks, and the opening of the bridge deck to traffic and the impact on navigation of the waterway. In the past, the hanging basket structure was set as a segmented rod, which could avoid the cable structure when lowering and installing it. This process was repeated and affected the construction period; another method was to add extension rods to the outside of the main hanging basket structure. As the cross-section of the cable tower continued to decrease, the extension rods were removed at high altitude to avoid the cable structure. The risk factor of high-altitude operations was high and the safety was low. Therefore, how to successfully complete the crack disease treatment construction of the variable-section cable tower surface while ensuring the safety of construction personnel, normal traffic, and safe navigation of the waterway has become the key to cable tower maintenance.

[0004] In the construction of crack disease treatment on the variable-section cable tower surface, the hanging basket structure and the cable tower cross-section cannot be fully matched, making the maintenance and repair construction of the cable tower top difficult and complicated. At the same time, the cable structure and the hanging basket work platform may collide in space, causing secondary damage to the cable structure, which has a certain impact on the use of the structure. In this regard, according to the characteristics of the cable tower structure, this application studies a new type of telescopic hanging basket for the maintenance of cable towers of cross-sea bridges, so as to solve the problems of the conventional hanging basket construction method that the hanging basket is difficult to attach to the main tower surface of the cable bridge and the suspension bridge for construction and avoid the collision between the hanging basket and the cable structure in space when the cable tower changes its cross-section. Utility Model Content

[0005] One purpose of the utility model is to provide a retractable hanging basket structure for repairing and maintaining a variable-section cable tower. The hanging basket structure is retractable so that the hanging basket structure can fully match the cable tower cross-section at different construction positions, thereby achieving convenience in repairing and maintaining the cable tower.

[0006] In order to solve the above technical problems, the utility model provides a retractable hanging basket structure for the maintenance of variable-section cable towers, including a retractable hanging basket and a support frame structure arranged on the top of the cable tower, the retractable hanging basket and the support frame structure are connected by cables and driven to rise and fall along the height direction of the cable tower by a winch, the retractable hanging basket is a U-shaped structure arranged on the outer periphery of the cable tower, including a bottom plate, a top plate and a plurality of steel sections connecting the top plate and the bottom plate as one, the top plate and the bottom plate are arranged as retractable structures in the transverse and longitudinal directions, the bottom plate includes retractable rods in the transverse and longitudinal directions, which are driven to retract and extend by a telescopic cylinder to adjust the transverse and longitudinal lengths of the retractable hanging basket.

[0007] Preferably, both ends of the telescopic rod are respectively fixedly connected to the bottom plate to form an integral structure with the bottom plate, the position corresponding to the telescopic rod is the telescopic range, and the structure of the top plate and the bottom plate within the telescopic range is a pull-out plate-like telescopic structure, which forms an integral structure with the bottom plate and the top plate.

[0008] Preferably, a plurality of wheels are arranged at intervals inside the telescopic hanging basket, and the wheels are arranged to slide closely against the surface of the cable tower.

[0009] Preferably, the support frame structure is a frame structure formed by a plurality of steel rods crisscrossing each other, and a pulley is provided on the support frame structure for connecting the cable.

[0010] Preferably, a lifting ring and a winch are provided on the telescopic hanging basket. After the cable is connected to the winch, it is wound around the pulley of the supporting frame structure and then fixedly connected to the lifting ring of the telescopic hanging basket. The winch is driven by the cable to drive the telescopic hanging basket to rise and fall.

[0011] Preferably, a temporary support platform is also provided at the bottom of the cable tower, which is used to bear the total weight of the telescopic hanging basket and the operators, and the temporary support platform is anchored to the cable tower by bolts and corbels.

[0012] The utility model at least has the following beneficial effects:

[0013] 1. The retractable hanging basket structure of the utility model is more suitable for the construction of variable-section cable towers. There is no need to lower or dismantle the hanging basket structure at high altitude, which ensures the safety of construction workers and saves a lot of construction time.

[0014] 2. The telescopic hanging basket structure of the utility model can realize that when the variable-section cable tower is in any position, the length of the hanging basket can be immediately adjusted by the telescopic oil cylinder, ensuring the perfect fit between the telescopic hanging basket structure and the cable tower surface, which is beneficial to avoid the position of the cable structure in space and is convenient for construction.

[0015] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the vertical layout of the telescopic hanging basket structure of the utility model;

[0017] Figure 2 This is a side view of the vertical layout of the telescopic hanging basket structure of the utility model;

[0018] Figure 3 This is a front view of the temporary support platform of the utility model;

[0019] Figure 4 This is a side view of the temporary support platform of the utility model;

[0020] Figure 5 The utility model is a telescopic hanging basket structure. Figure 1 Sectional view of the AA plane;

[0021] Figure 6 The utility model is a telescopic hanging basket structure. Figure 5 Sectional view of plane 1-1;

[0022] Figure 7 The utility model is a telescopic hanging basket structure. Figure 5 Sectional view of plane 2-2;

[0023] Figure 8 This is a front view of the telescopic rod and the intelligent hydraulic control system of the utility model;

[0024] Fig. 9 This is a front view of the support frame structure of the utility model;

[0025] Fig.10 It is a side view of the support frame structure of the utility model. DETAILED DESCRIPTION

[0026] In order to better understand the purpose, structure and function of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement it according to the description.

[0027] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials are commercially available unless otherwise specified; in the description of the present invention, the terms "lateral", "longitudinal", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0028] like Figures 1 to 10 As shown, the utility model provides a retractable hanging basket structure for maintenance of variable cross-section cable towers, including the following four parts: a temporary support platform 1, a retractable hanging basket 2, a retractable oil cylinder 3, and a support frame structure 4. The overall structure is as shown in FIG. Figure 1 and Figure 2 shown.

[0029] like Figure 3 and Figure 4 As shown, the temporary support platform 1 is composed of various types of steel rods 1.1, 1.2, 1.3, 1.4, 1.5, and 1.6, which are installed on the surface of the cable tower 2.1 and are tightly anchored to the cable tower 2.1 through bolts and brackets to form a temporary parking platform that can withstand the telescopic hanging basket structure. It is mainly used to bear the total weight of the telescopic hanging basket 2 and the operators, and at the same time provide a safe and convenient platform for construction workers to move up and down between the road surface, and its installation process is relatively simple and easy to operate. The temporary support platform 1 is set at the bottom of the cable tower 2.1 to prevent the telescopic hanging basket structure from damaging the guardrail on the road surface outside the cable tower. During the construction process, the telescopic hanging basket 2 rises with the support frame structure 4, and the telescopic hanging basket 2 falls onto the temporary support platform 1 before and after construction. The structural form of the temporary support platform can also be designed according to actual engineering needs.

[0030] like Figures 5 to 7As shown, the telescopic hanging basket 2 comprises various types of steel constituting the hanging basket structure, a transverse telescopic rod 2.2, a longitudinal telescopic rod 2.3, a steel section 2.4 constituting the hanging basket, a hanging basket bottom plate 2.5, a wheel 2.6, a lifting ring 2.7, a winch 2.8, etc. The rise or fall of the hanging basket is achieved by controlling the connection between the winch 2.8, the lifting ring 2.7 and the cable 4.6. The cable 4.6 is fixedly connected to the lifting ring and then connected upward to the pulley of the support frame structure 4 at the top of the cable tower, and then connected to the winch, and the action is achieved by the winch. The telescopic hanging basket 2 can be prefabricated in a factory, and after prefabrication, it can be assembled on a temporary support platform 1, which is mainly used for construction workers to provide a temporary working platform for the maintenance of the cable tower, which is convenient for the construction workers to work and ensures the safety of the construction workers.

[0031] The telescopic hanging basket 2 is a U-shaped structure arranged on the periphery of the cable tower, and has transverse and longitudinal telescopic functions when telescopic. The main structure of the telescopic hanging basket is a bottom plate, a top plate, and a plurality of steel sections arranged in sequence to connect the bottom plate and the top plate as a whole, and the construction personnel are located on the top plate for construction. The top plate and the bottom plate are both set as telescopic structures in the transverse and longitudinal directions, and the bottom plate and the top plate are both set as pull-out plate-shaped telescopic structures within the telescopic range, which form an integral structure with the bottom plate and the top plate, that is, a part of the bottom plate and the top plate is a pull-out telescopic structure that is mutually sleeved, and the telescopic rod is followed to achieve telescopic without affecting the overall strength and supporting function of the bottom plate and the top plate. The bottom plate includes telescopic rods in both the horizontal and vertical directions, which are driven to extend and retract by a telescopic oil cylinder to adjust the length of the telescopic hanging basket; the two ends of the telescopic rod are respectively fixedly connected to the bottom plate to form an integral structure with the bottom plate. The general arrangement is that the telescopic rods are arranged on opposite sides of the bottom plate, which is a conventional telescopic rod structure. The telescopic rods are driven to extend and retract by a telescopic oil cylinder, thereby driving the entire bottom plate to extend and retract, and then driving the horizontal and vertical extension and retraction of the entire hanging basket structure. The steel sections that make up the hanging basket are not arranged within the retractable range to facilitate extension and retraction. A plurality of wheels are arranged on the inside of the hanging basket, which are arranged to slide close to the surface of the cable tower, on the one hand to prevent the hanging basket from colliding with the cable tower; on the other hand, it also makes it easier to raise or lower the hanging basket.

[0032] like Figures 5 to 8As shown, the telescopic cylinder 3 is composed of two transverse X-direction telescopic cylinders 3.1, a longitudinal Y-direction telescopic cylinder 3.2, and a hydraulic extension and shortening rod 3.3, which may also include two transverse telescopic rods 2.2 and a longitudinal telescopic rod 2.3. According to the monitored transverse and longitudinal telescopic amounts of the telescopic hanging basket, the corresponding X-direction telescopic cylinder and Y-direction telescopic cylinder are controlled to change the length of the transverse telescopic rod 2.2 and the longitudinal telescopic rod 2.3, thereby controlling the transverse and longitudinal length of the hanging basket as a whole, so that the size of the hanging basket can be changed as the height rises or falls, ensuring that the hanging basket structure is in close contact with the tower wall, while avoiding the position of the cable, and there is no need to manually adjust the length of the hanging basket, thereby saving construction time, accelerating construction progress, and ensuring construction quality.

[0033] The cylinder bodies of the X-direction telescopic cylinder 3.1 and the Y-direction telescopic cylinder 3.2 and the ends of the corresponding hydraulic extension and shortening rods 3.3 thereon are respectively fixed to the telescopic rods of the bottom plate, so that the telescopic cylinders drive the telescopic rods 2.2 and the longitudinal telescopic rods 2.3 to extend and retract, thereby driving the entire hanging basket structure to extend and retract through the bottom plate.

[0034] like Fig. 9 and Fig.10 As shown, the support frame structure is composed of various types of steel 4.2, 4.3, 4.4, cable pulleys 4.5, and wire rope cables 4.6. The structure can be prefabricated in the factory, transported to the designated location and assembled on site, and installed on the personnel maintenance platform at the top of the cable tower through the bottom steel plate 4.1. It is mainly used to resist the total weight of the telescopic hanging basket 2 and the construction workers, and at the same time provide favorable support for the lifting or lowering of the hanging basket. The lifting and lowering of the telescopic hanging basket structure is achieved through the cable driven by the winch. The wire rope cable is connected to the hanging basket structure, and the load borne by the telescopic hanging basket is transferred to the support frame structure by the wire rope cable and offset by the ballast to ensure the force balance of the telescopic hanging basket structure.

[0035] The utility model provides a method for constructing a retractable hanging basket structure for maintenance of a variable-section cable tower, comprising the following steps:

[0036] S1: Use aerial platforms and truck cranes to install various types of steel rods required for the temporary support platform, and install the support frame structure on the top of the cable tower.

[0037] S2: Install the prefabricated telescopic hanging basket on the supporting platform, connect the telescopic hanging basket and the supporting frame structure with cables, set the telescopic oil cylinder on the telescopic hanging basket, check the connection of each component, and conduct trial lifting and debugging after the installation and inspection, and check whether the telescopic oil cylinder is working normally.

[0038] S3: After completing the above steps, the construction workers enter the telescopic hanging basket structure to carry out maintenance work on the cable tower.

[0039] S4: The retractable hanging basket structure is lifted at set height intervals. After each lifting, the retractable action of the retractable hanging basket structure is adjusted by the retractable oil cylinder to change the length of the retractable hanging basket, and then the maintenance work is carried out. During the adjustment process, the construction workers need to stand in the non-telescopic rod area and wait until the adjustment is completed before carrying out the construction work.

[0040] S5: Repeat the above steps in sequence until the maintenance of the entire cable tower is completed. After the maintenance of the cable tower is completed, the telescopic hanging basket structure is lowered to the temporary support platform, all temporary structures are removed, the site is cleaned and restored to its original state.

[0041] It can be understood that the present invention is described by some embodiments, and those skilled in the art know that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present invention. Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation mode, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, other modifications can be easily realized. Therefore, without departing from the general concept defined by the claims and the equivalent scope, the present invention is not limited to specific details and the illustrations shown and described here.

Claims

1. A retractable hanging basket structure for maintenance of variable cross-section cable towers, characterized in that: It includes a telescopic hanging basket and a support frame structure arranged on the top of the cable tower. The telescopic hanging basket is connected to the support frame structure by a cable and is driven by a winch to rise and fall along the height direction of the cable tower. The telescopic hanging basket is a U-shaped structure arranged on the outer periphery of the cable tower, including a bottom plate, a top plate and a plurality of steel sections connecting the top plate and the bottom plate as a whole. The top plate and the bottom plate are both arranged as telescopic structures in the transverse and longitudinal directions. The bottom plate includes telescopic rods in the transverse and longitudinal directions, which are driven to extend and retract by a telescopic cylinder to adjust the transverse and longitudinal lengths of the telescopic hanging basket.

2. The retractable hanging basket structure for maintenance of variable cross-section cable tower according to claim 1, characterized in that: The two ends of the telescopic rod are respectively fixedly connected to the bottom plate to form an integral structure with the bottom plate. The position corresponding to the telescopic rod is the telescopic range. The structure of the top plate and the bottom plate within the telescopic range is a pull-out plate-like telescopic structure, which forms an integral structure with the bottom plate and the top plate.

3. The retractable hanging basket structure for maintenance of variable cross-section cable tower according to claim 1, characterized in that: A plurality of wheels are arranged at intervals on the inner side of the telescopic hanging basket, and the wheels are arranged to slide closely against the surface of the cable tower.

4. The retractable hanging basket structure for maintenance of variable cross-section cable tower according to claim 1, characterized in that: The support frame structure is a frame structure formed by a plurality of steel rods crisscrossing each other, and a pulley is arranged on the support frame structure for connecting the cable.

5. The retractable hanging basket structure for maintenance of variable cross-section cable towers according to claim 4, characterized in that: The telescopic hanging basket is provided with a lifting ring and a winch. The cable is connected to the winch and then wound around the pulley of the supporting frame structure, and then fixedly connected to the lifting ring of the telescopic hanging basket. The winch is driven by the cable to drive the telescopic hanging basket to rise and fall.

6. The retractable hanging basket structure for maintenance of variable cross-section cable tower according to claim 1, characterized in that: A temporary support platform is also provided at the bottom of the cable tower, which is used to bear the total weight of the telescopic hanging basket and the operators. The temporary support platform is anchored to the cable tower by bolts and corbels.

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