Adjustable cable-stayed bridge girder cable guide pipe positioning frame

Abstract

The utility model relates to an adjustable cable-stayed bridge girder cable guide pipe positioning frame which comprises four stand columns arranged according to the four vertexes of a rectangle, a cross beam is welded between the upper ends of the two stand columns on each transverse side of the positioning frame, and a longitudinal beam is welded between the two stand columns on each longitudinal side of the positioning frame. Two sliding longitudinal rods capable of sliding along the cross beams are erected on the two cross beams, and two sliding transverse rods capable of sliding on the two sliding longitudinal rods are erected on the two sliding longitudinal rods. When the cable guide pipe positioning device is used, a cable guide pipe is inserted between the two sliding longitudinal rods and the two sliding transverse rods, the angle of the cable guide pipe is adjusted through longitudinal and transverse sliding of the sliding longitudinal rods and the sliding transverse rods on the positioning frame, and rapid and accurate positioning of the cable guide pipe is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge construction, relates to the installation and construction of a cable guide tube of a cable-stayed bridge, and specifically relates to an adjustable cable guide tube positioning frame for a main beam of a cable-stayed bridge. Background Art

[0002] A cable-stayed bridge is a type of bridge in which the main beam is directly pulled onto the bridge tower by multiple cables. One end of the cable is anchored on the main beam, and the other end is anchored on the cable tower. During the construction of the main beam of a cable-stayed bridge, a cable guide tube needs to be installed on the main beam. The traditional method of installing a cable guide tube is to use steel sections + steel pads to lay out and position the cable guide tube. However, due to the spatial offset between the tower end anchor point and the beam end anchor point of the cable, multiple people are required to cooperate in adjusting the axial direction and angle of the cable guide tube during the installation process, which has low efficiency and is difficult to control precision. Especially when the main beam has a curved section, there is an ultra-high rotation axis change between the cable and the main beam and the cable tower, and the traditional method makes it more difficult to control the positioning accuracy of the cable guide tube. Summary of the invention

[0003] The utility model aims to solve the above problems and provide an adjustable cable-stayed bridge main beam cable guide tube positioning frame to improve the positioning accuracy and construction efficiency of the cable guide tube.

[0004] The technical solution of the utility model is as follows:

[0005] An adjustable cable-stayed bridge main beam cable guide positioning frame, characterized in that: it comprises four columns arranged at the four vertices of a rectangle, a crossbeam is welded between the upper ends of the two columns on each side along the lateral sides of the positioning frame, and a longitudinal beam is welded between the two columns on each side along the longitudinal sides of the positioning frame; a transverse slide groove is provided on the top surface of each crossbeam along the axial direction;

[0006] Two sliding longitudinal rods are set up on the two cross beams in a direction perpendicular to the cross beams, and a transverse sliding bolt is vertically penetrated at both ends of each sliding longitudinal rod. The lower ends of the transverse sliding bolts at both ends of each sliding longitudinal rod are respectively inserted into the transverse sliding grooves on the two cross beams, and the two sliding longitudinal rods can slide along the transverse sliding grooves on the two cross beams; a longitudinal sliding groove is provided on the top surface of each sliding longitudinal rod along the axial direction;

[0007] Two sliding cross bars are set up on the two sliding longitudinal bars in a direction perpendicular to the sliding longitudinal bars, and two longitudinal sliding bolts are vertically penetrated on each sliding cross bar. The lower ends of the two longitudinal sliding bolts on each sliding cross bar are respectively inserted into the longitudinal sliding grooves on the two sliding longitudinal bars, and the two sliding cross bars can slide along the longitudinal sliding grooves on the sliding longitudinal bars.

[0008] The utility model adjusts the lateral, longitudinal and pitch angles of the cable guide tube by sliding the longitudinal and transverse sliding rods on the positioning frame, with fast positioning speed and high precision, and only two people are needed to cooperate, so the work efficiency is high. The utility model can be applicable to cable guide tubes of various specifications and models, and can adapt to the positioning and installation of cable guide tubes on the main beams of cable-stayed bridges in various environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0010] Figure 2 It is a schematic diagram of the plane structure of the utility model;

[0011] Figure 3 It is a side structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0012] like Figure 1 , Figure 2 , Figure 3 As shown, the utility model comprises four upright posts 1 arranged at four vertices of a rectangle, a crossbeam 2 is welded between the upper ends of two upright posts on each side along the lateral sides of the positioning frame, and a longitudinal beam 3 is welded between the two upright posts on each side along the longitudinal sides of the positioning frame; a transverse slide groove 4 is provided on the top surface of each crossbeam 2 along the axial direction;

[0013] Two sliding longitudinal rods 5 are set up on the two cross beams 2 in a direction perpendicular to the cross beams, and a transverse sliding bolt 6 is vertically penetrated at both ends of each sliding longitudinal rod 5. The lower ends of the transverse sliding bolts 6 at both ends of each sliding longitudinal rod are respectively inserted into the transverse sliding grooves 4 on the two cross beams, and the two sliding longitudinal rods 5 can slide along the transverse sliding grooves 4 on the two cross beams 2; a longitudinal sliding groove 7 is provided on the top surface of each sliding longitudinal rod 5 along the axial direction;

[0014] Two sliding cross bars 8 are set up on the two sliding longitudinal bars 5 in a direction perpendicular to the sliding longitudinal bars. Two longitudinal sliding bolts 9 are vertically penetrated on each sliding cross bar 8. The lower ends of the two longitudinal sliding bolts 9 on each sliding cross bar 8 are respectively inserted into the longitudinal sliding grooves 7 on the two sliding longitudinal bars. The two sliding cross bars 8 can slide along the longitudinal sliding grooves 7 on the sliding longitudinal bars 5.

[0015] In the above structure, the two sliding longitudinal rods and the two sliding transverse rods cross to form a "well"-shaped structure in plane, and the spacing between the two sliding longitudinal rods and the spacing between the two sliding transverse rods are adjustable to adapt to cable guide tubes of different diameters.

[0016] The spacing between the two sliding longitudinal rods is determined by the spacing between the two longitudinal sliding bolts on the sliding cross bar. When the utility model is implemented, in order to facilitate the adjustment of the spacing between the two sliding longitudinal rods, a positioning screw hole 10 can be opened at a certain interval along the axial direction on each sliding cross bar 8, and the two longitudinal sliding bolts 9 on each sliding cross bar are respectively inserted into the two positioning screw holes 10, and the spacing between the two sliding longitudinal rods 5 is adjusted by selecting the spacing between the two positioning screw holes 10.

[0017] During the specific implementation of the utility model, in order to increase the strength and stability of the positioning frame, a longitudinal connecting rod 11 can be welded between the lower ends of the two columns 1 on each side along the longitudinal sides of the positioning frame; in addition, a transverse connecting rod 12 can be welded between the lower ends of the two columns on one side along the transverse side of the positioning frame, and no connecting rod is provided between the lower ends of the two columns on the other transverse side, so as to facilitate the installation and fixation of the lower end of the cable guide tube on the main beam.

[0018] The usage of the utility model is as follows:

[0019] like Figure 1 As shown, the bottom of the positioning frame is supported on the periphery of the cable guide tube installation hole on the main beam; the spacing between the two sliding longitudinal rods and the two sliding cross rods is adjusted according to the diameter of the cable guide tube, the cable guide tube 13 is inserted between the two sliding longitudinal rods 5 and the two sliding cross rods 8, the lower end of the cable guide tube 13 is positioned, the angle of the cable guide tube is preliminarily adjusted and the cable guide tube 13 is placed on a sliding cross rod 8; then, the two sliding longitudinal rods 5 are moved to move the upper end of the cable guide tube laterally to adjust the inclination angle of the cable guide tube, and the sliding cross rod 8 is moved to move the upper end of the cable guide tube longitudinally to adjust the inclination angle of the cable guide tube, thereby accurately adjusting the angle of the cable guide tube, and realizing rapid and accurate positioning of the cable guide tube.

Claims

1. An adjustable cable-stayed bridge main beam cable guide locating frame, characterized in that: It includes 4 columns arranged at the four vertices of a rectangle, a horizontal beam is welded between the upper ends of the two columns on each side along the lateral sides of the positioning frame, and a longitudinal beam is welded between the two columns on each side along the longitudinal sides of the positioning frame; a horizontal slide groove is provided on the top surface of each beam along the axial direction; Two sliding longitudinal rods are set up on the two cross beams in a direction perpendicular to the cross beams, and a transverse sliding bolt is vertically penetrated at both ends of each sliding longitudinal rod. The lower ends of the transverse sliding bolts at both ends of each sliding longitudinal rod are respectively inserted into the transverse sliding grooves on the two cross beams, and the two sliding longitudinal rods can slide along the transverse sliding grooves on the two cross beams; a longitudinal sliding groove is provided on the top surface of each sliding longitudinal rod along the axial direction; Two sliding cross bars are set up on the two sliding longitudinal bars in a direction perpendicular to the sliding longitudinal bars, and two longitudinal sliding bolts are vertically penetrated on each sliding cross bar. The lower ends of the two longitudinal sliding bolts on each sliding cross bar are respectively inserted into the longitudinal sliding grooves on the two sliding longitudinal bars, and the two sliding cross bars can slide along the longitudinal sliding grooves on the sliding longitudinal bars.

2. The adjustable cable-stayed bridge main beam cable guide tube positioning frame according to claim 1 is characterized in that: Each sliding cross bar is provided with a positioning screw hole at a certain interval along the axial direction, and two longitudinal sliding bolts on each sliding cross bar are respectively inserted into the two positioning screw holes.

3. The adjustable cable-stayed bridge main beam cable guide tube positioning frame according to claim 1 is characterized in that: Along the longitudinal sides of the positioning frame, a longitudinal connecting rod is welded between the lower ends of the two columns on each side; along the transverse side of the positioning frame, a transverse connecting rod is welded between the lower ends of the two columns on one side.

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