Suspension type bracket for load-bearing cable of large-span cable crane system

Abstract

The utility model discloses a suspension type bracket for a load-bearing cable of a large-span cable crane system, which relates to the technical field of cable brackets and comprises a U-shaped main frame body, and the main frame body comprises a transverse frame and vertical frames arranged at two ends of the transverse frame; a bottom riding wheel frame is arranged in the middle of the transverse frame, and a plurality of riding wheels are arranged on the bottom riding wheel frame; inclined wheel frames are arranged between the two ends of the bottom riding wheel frame and the middle upper part of the vertical frame in an inclined upward manner; inclined wheels are arranged on the inclined wheel frames; traveling wheel frames are arranged on the outer sides of the tops of the vertical frames, traveling wheels are arranged in the traveling wheel frames, rope clamps are arranged on the outer sides of the traveling wheel frames, and blocking rods are arranged on the portions, close to the bottoms of the traveling wheels, of the traveling wheel frames. The utility model is suitable for the bearing cable of the large-span cable crane system, and can effectively assist the construction of the main cable.

Description

Technical Field

[0001] This utility model relates to the field of cable bracket technology, specifically a load-bearing cable suspension bracket for a large-span cable hoisting system. Background Technology

[0002] Due to the large span of the bridge's cable-stayed system, with each pair of load-bearing cables forming a loop, the cable installation process is characterized by high traction force and a high risk factor. To address this, the project's technical team dedicated themselves to research and optimization of the construction process. They boldly innovated in the installation of the first load-bearing cable, adopting a bracket-assisted installation method. This method offers significant advantages over traditional methods. The bracket supports the weight of the load-bearing cable, dividing the span, which improves rope sag, reduces the workload of elevation adjustments, lowers traction force to enhance safety, and allows the main cable to be installed on the bracket, creating better working conditions for the work sites below and improving overall construction efficiency.

[0003] In the aforementioned technologies, the design of the load-bearing cable suspension bracket was an original creation of the project team, and its implementation effect was excellent. A search revealed no reports in existing technologies with the same structure as the newly designed load-bearing cable suspension bracket. The closest prior art document is a utility model with publication number CN 220927521 U, which discloses a load-bearing cable bracket for a suspension bridge catwalk. Its features include: a frame, nylon rollers with roller shafts, nylon support rollers with roller shafts, wall panels, positioning angle steel, and U-bolts; a wall panel is installed on the outer side of the frame, and positioning angle steel is welded to the wall panel as a connection device between the bracket and the positioning rope; the positioning rope is fixed to the positioning angle steel using U-bolts. The advantages of this patent are as follows: by welding positioning angle steel to the bracket as a connection device between the bracket and the positioning rope, the installation and tightening of the positioning U-bolts are more convenient, making the connection between the positioning rope and the bracket more secure and reliable. Analysis shows that the structural characteristics of this bracket are not suitable for use with load-bearing cables in large-span cable-stayed systems. Utility Model Content

[0004] This utility model provides a suspension bracket for the load-bearing cable of a large-span cable-stayed system, which is intended to be used for the load-bearing cable of a large-span cable-stayed system and can effectively assist in the construction of the main cable.

[0005] This utility model provides the following technical solution to achieve the above objectives:

[0006] A load-bearing cable suspension bracket for a long-span cable-stayed system includes a U-shaped main frame, which includes a transverse frame and vertical frames at both ends of the transverse frame. A bottom support wheel frame is provided in the middle of the transverse frame, and several support wheels are provided on the bottom support wheel frame. Inclined wheel frames are provided diagonally upward between the two ends of the bottom support wheel frame and the upper part of the vertical frame, and inclined wheels are provided on the inclined wheel frames. A traveling wheel frame is provided on the outer side of the top of the vertical frame, and a traveling wheel is provided in the traveling wheel frame. A rope clamp is provided on the outer side of the traveling wheel frame, and a stop bar is provided near the bottom of the traveling wheel on the traveling wheel frame.

[0007] In the aforementioned long-span cable-stayed system load-bearing cable suspension bracket, the support rollers and inclined rollers are nylon wheels.

[0008] In the aforementioned large-span cable-stayed system load-bearing cable suspension bracket, there are several rollers, all of which are mounted on the rotating shaft; every two or more rollers are supported by a support plate mounted on the transverse frame to support the rotating shaft.

[0009] In the aforementioned large-span cable-stayed system load-bearing cable suspension bracket, there are 28 support rollers; from left to right, starting from the 4th support roller, a support plate is installed for every 5 support rollers.

[0010] In the aforementioned long-span cable-stayed system load-bearing cable suspension bracket, two support rods are provided.

[0011] In the aforementioned long-span cable-stayed system load-bearing cable suspension bracket, rope clips are installed on the outer side of the traveling wheel frame via a rope clip frame.

[0012] In the aforementioned long-span cable-stayed system load-bearing cable suspension bracket, rope clips are provided on both sides of the rope clip frame.

[0013] Compared with the prior art, the load-bearing cable suspension bracket for a large-span cable-stayed system provided by this utility model has the following beneficial effects:

[0014] This invention is applicable to the use of load-bearing cables in long-span cable-stayed systems, effectively assisting in the construction of the main cable. During construction, several support rollers and the inclined rollers on both sides effectively support and assist in the traction of multiple main cables. The bracket-assisted installation method formed by this invention offers significant advantages over traditional methods. The bracket bears the weight of the load-bearing cable and divides the span, which improves rope sag, reduces the workload of elevation adjustment, lowers traction force to enhance safety, and allows the main cable to be installed on the bracket, creating construction conditions for the work sites below and improving overall construction efficiency. Attached Figure Description

[0015] Figure 1 This is a schematic diagram illustrating the application of this utility model; (the upper part of the diagram shows the empty cable of the support frame; the lower part shows the forming diagram of the support frame of this utility model).

[0016] Figure 2 This is a schematic diagram of the structure of this utility model;

[0017] Figure 3 This is a schematic diagram illustrating the component labeling and dimensioning of this utility model.

[0018] Figure 4 for Figure 3 Enlarged diagram of the left structure;

[0019] Figure 5 for Figure 3 Enlarged schematic diagram of the right-side structure;

[0020] Figure 6 for Figure 2 Schematic diagram of the structure of AA;

[0021] Figure 7 for Figure 2 Schematic diagram of the structure of BB;

[0022] Figure 8 for Figure 2 A schematic diagram of the structure of CC;

[0023] Figure 9 for Figure 2 Schematic diagram of the structure of DD;

[0024] Figure 10 for Figure 2 Schematic diagram of the structure of EE;

[0025] Figure 11 A schematic diagram showing the structure and dimensions of part N1;

[0026] Figure 12 A schematic diagram showing the structure and dimensions of part N1';

[0027] Figure 13 This is a schematic diagram showing the structure and dimensions of part N2.

[0028] Figure 14 A schematic diagram showing the structure and dimensions of part N3;

[0029] Figure 15 A schematic diagram showing the structure and dimensions of part N4;

[0030] Figure 16 A schematic diagram showing the structure and dimensions of part N5;

[0031] Figure 17 A schematic diagram showing the structure and dimensions of part N6;

[0032] Figure 18 A schematic diagram showing the structure and dimensions of part N7;

[0033] Figure 19 A schematic diagram showing the structure and dimensions of part N8;

[0034] Figure 20 A schematic diagram showing the structure and dimensions of part N9;

[0035] Figure 21 A schematic diagram showing the structure and dimensions of part N10;

[0036] Figure 22 A schematic diagram showing the structure and dimensions of part N11;

[0037] Figure 23 A schematic diagram showing the structure and dimensions of part N12;

[0038] Figure 24 A schematic diagram showing the structure and implementation dimensions of the inclined wheel part;

[0039] Figure 25 A schematic diagram showing the structure and implementation dimensions of the inclined wheel axle pin;

[0040] Figure 26 A schematic diagram showing the structure and implementation dimensions of the support roller pin;

[0041] Figure 27 A schematic diagram showing the structure and dimensions of the component's traveling wheel;

[0042] Figure 28 A schematic diagram showing the structure and implementation dimensions of the axle pin for the traveling wheel of the part;

[0043] Figure 29 A schematic diagram showing the structure and implementation dimensions of the component's support roller;

[0044] Figure 30 A table of engineering quantities for the parts used in implementing this utility model;

[0045] In the image above, Figure 1 The dimensions are in meters (m), while the dimensions in the other attached diagrams are in millimeters (mm).

[0046] Attached diagram labels: 1-Main frame; 2-Bottom support wheel frame; 3-Support wheel; 4-Angle wheel frame; 5-Angle wheel; 6-Traveling wheel frame; 7-Traveling wheel; 8-Rope clamp; 9-Guide bar; 10-Support plate; 11-Rope clamp frame. Detailed Implementation

[0047] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0048] Example. A load-bearing cable suspension bracket for a long-span cable-stayed system, referenced. Figure 2 , 6 As shown in Figure -10, the main frame 1 is arranged in a U-shape. The main frame 1 includes a horizontal frame and vertical frames arranged at both ends of the horizontal frame. A bottom support wheel frame 2 is arranged in the middle of the horizontal frame, and several support wheels 3 are arranged on the bottom support wheel frame 2. An inclined wheel frame 4 is arranged diagonally upward between the two ends of the bottom support wheel frame 2 and the upper middle part of the vertical frame, and an inclined wheel 5 is arranged on the inclined wheel frame 4. A traveling wheel frame 6 is arranged on the outer side of the top of the vertical frame, and a traveling wheel 7 is arranged in the traveling wheel frame 6. A rope clip 8 is arranged on the outer side of the traveling wheel frame 6, and a stop bar 9 is arranged near the bottom of the traveling wheel 7 on the traveling wheel frame 6.

[0049] During installation, this bracket is mounted on the positioning cable via rope clamps 8 on both sides and stop bars 9. The main cable is further supported by inclined rollers 5 and support rollers 3, whose rotation facilitates the traction of the main cable. Multiple support rollers 3 are provided for traction of multiple main cables. The inclined rollers 5 on both sides are angled to keep the main cable between the two inclined rollers 5 and the support rollers 3 during traction. With multiple support rollers 3, only the supported rollers that are pressed down are used during traction, extending the bracket's lifespan. Even if some rollers are damaged, the remaining rollers can continue to work without being affected. More importantly, with multiple main cables, even if some supported rollers 3 are pressed down, the other support rollers 3 can still provide support and auxiliary traction for the main cable being pulled, and the support rollers 3 can operate independently without interference.

[0050] The support roller 3 and the inclined roller 5 are nylon wheels. Nylon wheels are more durable and offer better value for money.

[0051] The rollers 3 are provided in several places, and all of them are set on the rotating shaft; every two rollers 3 or more are provided with a support plate 10 installed on the horizontal frame to support the rotating shaft.

[0052] There are 28 rollers 3; from left to right, starting from the 4th roller 3, a support plate 10 is installed every 5 rollers 3. Because the main cable is very heavy, the roller axle pins are easily damaged if only supported at both ends of the bottom roller frame 2. Multiple support plates 10 effectively support the roller axle pins, thus meeting the requirement of supporting a large number of main cables.

[0053] Two stop levers 9 are provided, and the stop levers 9 are set by screws.

[0054] The outer side of the walking wheel frame 6 is equipped with a rope clip 8 via a rope clip bracket 11.

[0055] The rope clip bracket 11 has rope clips 8 on both sides. The rope clips 8 on both sides are used to fix the positioning ropes on both sides, thereby fixing the bracket in the appropriate installation position.

[0056] The application scenario and method for this bracket are as follows: After the construction of the anchor wheel wall panels on the tower and the installation of the bracket's load-bearing cables are completed, and after the load-bearing cables are erected and their sag adjusted, this bracket should be installed. (Refer to...) Figure 1 The upper part is shown. Φ21.5mm steel wire rope is used as the positioning cable for the bracket, and the bracket projection spacing is 90m.

[0057] During bracket installation, thread the positioning cables on both sides through all brackets. Lock the positioning cables on both sides of the first bracket with rope clips 8 and place it on the load-bearing cable, then tighten the stop bolts. After starting traction and moving approximately 90m, stop traction. Place the second bracket on the load-bearing cable, adjust its position, and lock it with rope clips 8. Repeat this process until all eight brackets are installed. Finally, anchor the positioning cables to the anchor wheel, as per [reference needed]. Figure 2 The lower part is shown.

[0058] After the bracket system is installed, the main cable can be installed using the brackets. The maximum traction force required for the main cable is approximately 17t. When installing the load-bearing cable, the right cable is installed first, followed by the left cable, with a cycle of 2500m (one rope). After one cable is installed, it is adjusted before installing the next cable. During the installation process, the main cable is easier to pull with the help of the support rollers 3 and slant rollers 5.

[0059] Furthermore, the aforementioned bracket can be used in this application.

[0060] In practical implementation, the dimensions of the bracket need to be adjusted according to the quantity and specifications of the cables. This utility model is used in the construction of a cable hoisting system for a certain bridge. Each component needs to be composed of various parts, and the part names are as follows: Figure 3-5 As shown, the dimensions and shape of the parts are referenced. Figure 11-29 As shown, quantity reference Figure 30 As shown in the diagram above, the specifications and connection relationships of the various parts used in the bracket can be understood. After prefabricating 8 brackets, implementation will be carried out in the following construction scenario:

[0061] Background: The cable-stayed bridge installation system has a span arrangement of 175m + 810m (single tower), with an elevation difference of approximately 8m between the two banks. Two cable crane systems with a rated net lifting capacity of 291t are used, responsible for the installation of the left and right arch ribs respectively. The A-bank cable tower is installed on top of the fixed pier No. 4 on the right span (No. 3 on the left span), using a fixed tower design. The main cable system of each cable crane is designed as two sets (2x14ø60).

[0062] The main cable installation is assisted by a bracket. The bracket's load-bearing cable is made of ø32 steel wire rope, and the positioning cable is made of ø21.5 steel wire rope.

[0063] Construction process:

[0064] (1) Construction of anchor wheel wall panels on the tower: The support cable and the rigging rope are anchored to the top of the tower on bank A and the main anchorage on bank B, respectively. The top of the tower on bank A requires welding of wall panels and installation of anchor wheels. The support cable anchoring device consists of wall panels and wheel bodies. Before welding the wall panels, the connecting bracket between the single cable saddles is removed and moved until the cable saddle traveling wheel device is almost close. The transverse bridge spacing of the support cable anchor wheels is 6485mm, and the net distance between the wall panels is 130mm. Welding is carried out according to this. The support cable anchor wheels are located on the inner side, and the positioning cable anchor wheels are located on the outer side, symmetrically arranged. During construction, attention should be paid to the distance and the position of the reinforcing plate.

[0065] (2) The support cable is made of ø32 steel wire rope, which is sent from the A bank and returns to the cable saddle on the B bank to be anchored. There are 16 anchor rope clips with a spacing of 20cm.

[0066] (3) Installation of the bracket of this utility model: After the bracket load-bearing cable is erected and the sag is adjusted, the bracket is installed.

[0067] A Φ21.5mm steel wire rope is used as the positioning cable for the bracket, and the projected spacing of the bracket is 90m.

[0068] When installing the brackets, pass the positioning cable through all the brackets; lock the positioning cables on both sides of the first bracket with rope clips and place them on the load-bearing cable, then tighten the stop bar screws; start traction and travel for about 90m, then stop traction; place the second bracket on the load-bearing cable, adjust its position and lock it with rope clips; repeat the operation until all 8 brackets are installed; anchor the positioning cable to the anchor wheel.

[0069] (4) After the bracket system is installed, the main cable is installed. The maximum traction force required is about 17t. When installing the load-bearing cable, the right cable is installed first, and then the left cable is installed. Every 2500m (one rope) is a cycle. After one cable is installed, the cable is adjusted before the next cable is installed.

[0070] Implementation benefits: The bracket-assisted installation method has significant advantages over the traditional method. The bracket supports the weight of the load-bearing cable and divides the span, which can improve the sag of the rope, reduce the workload of elevation adjustment, reduce traction to improve safety, and allow the main cable to be installed on the bracket, creating construction conditions for the work sites below and improving the overall construction efficiency.

[0071] The above description is merely a preferred embodiment of this application, but the scope of protection of this application is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this application, based on the technical solution and concept of this application, should be included within the scope of protection of this application.

Claims

1. A large span cable crane system load bearing cable suspension type bracket, characterized by: The main frame (1) is arranged in a U-shape. The main frame (1) includes a horizontal frame and vertical frames at both ends of the horizontal frame. A bottom support wheel frame (2) is provided in the middle of the horizontal frame. Several support wheels (3) are provided on the bottom support wheel frame (2). An inclined wheel frame (4) is provided diagonally upward between the two ends of the bottom support wheel frame (2) and the upper middle part of the vertical frame. An inclined wheel (5) is provided on the inclined wheel frame (4). A traveling wheel frame (6) is provided on the outer side of the top of the vertical frame. A traveling wheel (7) is provided in the traveling wheel frame (6). A rope clip (8) is provided on the outer side of the traveling wheel frame (6). A stop bar (9) is provided near the bottom of the traveling wheel (7) of the traveling wheel frame (6).

2. The long span cable crane system load bearing cable suspended cradle of claim 1, wherein: The support roller (3) and the inclined roller (5) are nylon wheels.

3. The long span cable crane system load bearing cable suspended cradle of claim 1, wherein: The rollers (3) are provided in several places, and all of them are set on the rotating shaft; every two rollers (3) or more, a support plate (10) installed on the horizontal frame is provided to support the rotating shaft.

4. The long span cable crane system load bearing cable suspended cradle of claim 3, wherein: There are 28 rollers (3); from left to right, starting from the 4th roller (3), a support plate (10) is provided every 5 rollers (3).

5. The long span cable suspended system load bearing cable suspension bracket of claim 1, wherein: The stop bar (9) has two bars.

6. The long span cable suspended system load bearing cable suspension bracket of claim 1, wherein: The outer side of the walking wheel frame (6) is equipped with a rope clip (8) via a rope clip frame (11).

7. The large span cable suspended system of claim 6, wherein: The rope clips (8) are provided on both sides of the rope clip holder (11).

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