Cable guide pipe positioning and adjusting device

Abstract

The utility model discloses a cable guide pipe positioning and adjusting device which comprises a beam face, a cable guide pipe is arranged on the beam face, an installation frame is arranged outside the cable guide pipe, an adjusting bolt and an adjusting nut are arranged on the installation frame, and the adjusting bolt is matched with the adjusting nut and penetrates through the installation frame. The cable guide pipe positioning and adjusting device is small in positioning error, high in construction efficiency and capable of achieving rapid and accurate positioning of the cable guide pipe.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction. Specifically, the utility model relates to a positioning and adjusting device for a cable duct. Background Art

[0002] With the rapid development of transportation construction in China, the tied-arch bridge, as a bridge with strong spanning ability, can solve the problem of excessive internal bending moment in large-span bridges such as crossing rivers and roads. The suspenders in the tied-arch bridge are led out by cable ducts embedded in the beam body. Since the positioning accuracy of the cable ducts directly affects the force of the bridge body, the construction of such bridges has high requirements for the embedding accuracy of the cable ducts.

[0003] At present, the common method for positioning and adjusting the cable ducts is to weld angle steels at the pipe orifices of the cable ducts and use the cross method for marking and positioning. Manual cooperation with steel supports is used to control the position and the center coordinates of the pipe orifices of the cable ducts. After the adjustment is in place, the cable ducts are fixed. This method is manually operated, with large errors and low efficiency, and cannot quickly and accurately complete the positioning of the cable ducts.

[0004] The utility model patent with the publication number of CN 104264588A was published on January 7, 2015, with the name of a cable duct positioning device. The cable duct positioning device includes an anchor backing plate and a cable duct with a combined structure. The anchor backing plate is arranged at the lofting anchor point position at the beam end, the center of the anchor backing plate is the lofting anchor point position at the beam end, the end of the cable duct is arranged in the anchor backing plate, and it further includes three adjusting mechanisms arranged on the outer side of the circumferential direction of the cable duct. Each adjusting mechanism includes a screw rod with adjustable length. The upper ends of the screw rods are all hinged to the corresponding connecting pieces, and each connecting piece hinged to the upper end of the screw rod is fixedly arranged on the side of the cable duct correspondingly. Each screw rod extends radially downward, the lower ends of each screw rod are hinged to the corresponding connecting pieces, and each connecting piece hinged to the lower end of the screw rod is fixedly arranged on the foundation. This cable duct positioning device has a complex structure and is inconvenient to operate. Content of the Utility Model

[0005] The purpose of the utility model is to provide a cable duct positioning and adjusting device with small positioning error, high construction efficiency, and capable of achieving rapid and accurate positioning in view of the deficiencies of the prior art.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] The cable duct positioning and adjusting device includes a beam surface. The cable duct is arranged on the beam surface. An installation frame is arranged outside the cable duct. An adjusting bolt and an adjusting nut are arranged on the installation frame. The adjusting bolt cooperates with the adjusting nut and passes through the installation frame. Openings are arranged on both sides of the bottom of the installation frame.

[0008] The end of the adjusting bolt contacts the cable duct. The adjusting bolt is horizontally arranged and perpendicular to the installation frame, and the adjusting bolts are evenly distributed on the installation frame.

[0009] The cross-section of the installation frame is square, and the adjusting bolts located on the opposite sides of the installation frame are on the same straight line.

[0010] A pre-embedded plate is fixedly connected to the bottom of the cable duct, and an anchor backing plate is fixedly connected to the bottom of the pre-embedded plate. The anchor backing plate is located below the beam surface.

[0011] A spirit level is provided in the middle of the top end of the cable duct.

[0012] The adjusting bolts are arranged in layers.

[0013] A rubber washer is provided at the end of the adjusting bolt.

[0014] The installation frame is composed of welded steel plates.

[0015] The technical effect of the present utility model is as follows: By using the cable duct positioning and adjusting device of the present utility model and the adjusting bolts, the adjustment of the position and perpendicularity of the cable duct is satisfied, the rapid and accurate positioning of the cable duct can be realized, the positioning process is simplified, the adjustment error is small, and the construction efficiency is improved; An opening is designed at the bottom of the installation frame, and the fixation of the bottom of the cable duct can be realized after the positioning of the cable duct is completed, meeting the requirements for the pre-embedded accuracy of the cable duct; The layout position of the adjusting bolts is also reasonably designed to further improve the accuracy of the cable duct positioning; This device also has the advantages of convenient operation, simple structure, low cost and reusable. Description of the Drawings

[0016] This specification includes the following drawings, and the shown contents are respectively:

[0017] Figure 1 is the main structural view of the cable duct positioning and adjusting device of the present utility model;

[0018] Figure 2 is the top structural view of the cable duct positioning and adjusting device of the present utility model;

[0019] Figure 3 is Figure 1 the partial enlarged view of area A in

[0020] Figure 4 is Figure 1 the partial enlarged view of area B in

[0021] In the drawings, the markings are: 1, cable duct; 2, beam surface; 3, installation frame; 4, adjusting bolt; 5, adjusting nut; 6, opening; 7, spirit level; 8, pre-embedded plate; 9, anchor backing plate; 10, rubber washer. Detailed Embodiment

[0022] The following will further describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings through the description of the embodiments, aiming to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concept and technical solutions of the present invention and facilitate its implementation.

[0023] As Figures 1 to 4 shown, the cable duct positioning and adjusting device includes a beam surface 2, a cable duct 1 is arranged on the beam surface 2, an installation frame 3 is arranged outside the cable duct 1, an adjusting bolt 4 and an adjusting nut 5 are arranged on the installation frame 3, and the adjusting bolt 4 cooperates with the adjusting nut 5 and passes through the installation frame 3; openings 6 are arranged on both sides of the bottom of the installation frame 3.

[0024] The device realizes the adjustment of the inclination angle and position of the cable duct 1 through the pushing action of the rotation and movement of the adjusting bolt 4 on the cable duct 1. Compared with the prior art in which the adjustment of the cable duct 1 is controlled by steel supports, the construction difficulty is greatly reduced. The rotation of the adjusting bolt 4 is converted into a feeding process, and its adjustment amount each time is more uniform, the adjustment error is small, and the situation of excessive adjustment will not occur. Moreover, the bolt connection is not easy to loosen, and the stability is reliable. Opening the openings 6 at the bottom of the installation frame 3 provides an operating space for construction workers to fix the cable duct 1. When the positioning and verticality adjustment of the cable duct 1 are accurate, the bottom of the cable duct 1 can be fixed through the openings 6, which will not cause secondary influence on the cable duct 1 after accurate positioning and is not affected by the longitudinal slope at the bottom of the beam, and can meet the requirements for the embedding accuracy of the cable duct 1.

[0025] As Figure 1 and Figure 2 shown, the end of the adjusting bolt 4 contacts the cable duct 1, the adjusting bolt 4 is horizontally arranged and perpendicular to the installation frame 3, and the adjusting bolts 4 are evenly distributed on the installation frame 3. The horizontal feeding of the adjusting bolt 4 realizes the position and verticality adjustment of the cable duct 1, which is convenient to operate, can improve the construction efficiency, and a plurality of adjusting bolts 4 are arranged around the cable duct 1, which can further improve the accuracy of the cable duct 1 positioning.

[0026] As Figure 2 shown, the cross-section of the installation frame 3 is square, and the adjusting bolts 4 located on the opposite sides of the installation frame 3 are on the same straight line. Using a square installation frame 3 can ensure that the moving direction of the adjusting bolt 4 is always perpendicular to the installation frame 3. Therefore, as long as the installation frame 3 is kept vertical, the moving direction of the adjusting bolt 4 can be ensured to be accurate, and further the positioning of the cable duct 1 can be ensured to be accurate. The two adjusting bolts 4 on the opposite surfaces of the installation frame 3 are on the same straight line, and such a design is beneficial to determining the position of the cable duct 1 according to the center coordinates of the pipe orifice.

[0027] As Figure 1 and Figure 4As shown in the figure, the cable duct 1 is arranged on the bottom surface of the beam. The bottom of the cable duct 1 is fixedly connected with a pre-embedded plate 8, and the bottom of the pre-embedded plate 8 is fixedly connected with an anchor backing plate 9. The pre-embedded plate 8 is fixed to the anchor backing plate 9 through the embedded parts, so as to fix the bottom structure of the cable duct 1.

[0028] As Figure 2 shown in the figure, a spirit level 7 is arranged in the middle of the top end of the cable duct 1. By using the principle of the liquid level being horizontal of the spirit level 7, the deviation degree of the installation inclination position of the cable duct 1 and the perpendicularity of the pipe body can be obtained. Therefore, the construction personnel can judge whether the attitude of the currently installed cable duct 1 is accurate only by checking the spirit level 7, and then ensure the accuracy of the perpendicularity of the cable duct 1 positioning through adjustment.

[0029] As Figure 1 shown in the figure, the adjusting bolts 4 are arranged in layers. Since the cable duct 1 is relatively long, the adjusting bolts 4 are designed at multiple positions on the cable duct 1 to realize the overall adjustment of the cable duct 1. The layered arrangement can also reduce the moving resistance of the cable duct 1. For example, a total of 8 adjusting bolts 4 are arranged in two layers in four directions of the cable duct 1. By only rotating the adjusting bolts 4, the position of the duct and the orientation of the pipe orifice can be adjusted and positioned, reducing the difficulty of positioning and adjusting the cable duct 1 and improving the work efficiency.

[0030] As Figure 3 shown in the figure, a rubber washer 10 is arranged at the end of the adjusting bolt 4. A rubber washer 10 is arranged at the contact end between the adjusting bolt 4 and the cable duct 1, so that the extrusion of the adjusting bolt 4 on the cable duct 1 provides a buffering effect, effectively protecting the cable duct 1 and the external coating.

[0031] The installation frame 3 is composed of welded steel plates. Adopting the above structure can reduce the material and manufacturing costs. The overall device has the advantages of simple structure, convenient operation and easy transportation. The components in the device can be reused, which can meet the positioning and adjustment of multiple cable ducts 1 of the same tied-arch bridge.

[0032] Embodiment: By welding four mounting frames 3 into a rectangular frame, openings 6 are provided on both sides of the bottom of the mounting frame 3, and 8 holes are opened in the upper and lower layers in four directions of the mounting frame 3. Bolts are arranged on the outer sides of the four vertical surfaces of the mounting frame 3. Adjusting nuts 5 and washers are welded inside each hole. At the same time, a rubber washer 10 is pasted at the front end of the adjusting bolt 4. During adjustment, according to the deviation direction of the cable duct 1, the position and inclination of the cable duct 1 are controlled by adjusting the exposed parts of the adjusting bolts 4 at each position, so that the cable duct 1 reaches the designed angle and position. The total station is used for detection throughout the process, and a spirit level 7 is used as an auxiliary to observe the horizontality and verticality of the tube body of the cable duct 1. When the positioning adjustment of the cable duct 1 is accurate, the cable duct 1 is locked through the holes opened on both sides of the bottom, and finally the positioning adjustment of the cable duct 1 is completed. Subsequently, the bolts are rotated outwards to release the fixation of the bolts on the cable duct 1. After all the bolts are withdrawn, the entire adjusting device is lifted out to realize the recycling and reuse of the device, that is, the entire process is completed. Then, the device is transported to the next working station to carry out the subsequent construction process.

[0033] The cable duct positioning and adjusting device, by using the adjusting bolts 4, meets the adjustment requirements for the position and verticality of the cable duct 1, can realize the rapid and accurate positioning of the cable duct 1, simplifies the positioning process, has a small adjustment error, and improves the construction efficiency; openings 6 are designed at the bottom of the mounting frame 3, and the bottom of the cable duct 1 can be fixed after the positioning of the cable duct 1 is completed, meeting the requirements for the embedding accuracy of the cable duct 1; the layout position of the adjusting bolts 4 is reasonably designed, further improving the accuracy of the cable duct 1 positioning; the device also has the advantages of convenient operation, simple structure, low cost, and reusable.

[0034] The above has made an exemplary description of the present invention in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as various non-substantive improvements are made by adopting the method concept and technical solution of the present invention; or without improvement, the above concept and technical solution of the present invention are directly applied to other occasions, they are all within the protection scope of the present invention.

Claims

1. A cable guide positioning and adjusting device, characterized in that: It comprises a beam surface, the cable guide tube is arranged on the beam surface, a mounting frame is arranged outside the cable guide tube, an adjusting bolt and an adjusting nut are arranged on the mounting frame, the adjusting bolt cooperates with the adjusting nut and passes through the mounting frame; openings are arranged on both sides of the bottom of the mounting frame.

2. The cable guide tube positioning and adjusting device according to claim 1, characterized in that: The end of the adjusting bolt contacts the cable guide tube, the adjusting bolt is arranged horizontally and perpendicular to the installation frame, and the adjusting bolt is evenly distributed on the installation frame.

3. The cable guide tube positioning and adjusting device according to claim 2, characterized in that: The cross section of the installation frame is square, and the adjusting bolts opposite to each other on the installation frame are in the same straight line.

4. The cable guide tube positioning and adjusting device according to any one of claims 1 to 3, characterized in that: The bottom of the cable conduit is fixedly connected with an embedded plate, the bottom of the embedded plate is fixedly connected with an anchor plate, and the anchor plate is located below the beam surface.

5. The cable guide tube positioning and adjusting device according to claim 4, characterized in that: A level ruler is arranged at the middle of the top end of the cable guide tube.

6. The cable guide tube positioning and adjusting device according to claim 5, characterized in that: The adjusting bolts are arranged in layers.

7. The cable guide tube positioning and adjusting device according to claim 6, characterized in that: A rubber washer is provided at the end of the adjusting bolt.

8. The cable guide tube positioning and adjusting device according to claim 3, characterized in that: The installation frame is formed by welding steel plates.

Images