A device for precise positioning of a catheter

Abstract

The utility model provides a device for cable conduit precision positioning relates to cable conduit construction technical field, including positioning clamping plate, be provided with semicircle clamping groove on the positioning clamping plate, the diameter of semicircle clamping groove is same with the outer diameter of cable conduit, the both sides of semicircle clamping groove on the positioning clamping plate are provided with connecting rod, the central axis of two connecting rods is located on same straight line with positioning feature point, the outer end of two connecting rods is provided with prism, two prisms are set up symmetrically relative to positioning feature point, when positioning feature point and cable conduit vertical clamping are connected on semicircle clamping groove, the central axis of cable conduit is located on same straight line. The utility model can effectively improve cable conduit installation precision, guarantees subsequent stay cable construction.

Description

Technical Field

[0001] This utility model relates to the field of cable conduit construction technology, specifically a device for precise positioning of cable conduits. Background Technology

[0002] Cable-stayed bridges, as a common type of long-span bridge structure, rely on a high-strength cable system to connect the bridge towers and main girder, thereby ensuring the bridge's load-bearing capacity and stability. One of the key components of the cable system is the cable guide tube, which not only protects the cables but also determines their precise location. The installation accuracy of the cable guide tube directly affects the service life of the cables and the safety of the bridge. Therefore, precise positioning of the cable guide tube is a crucial aspect of cable-stayed bridge construction.

[0003] Existing cable duct positioning devices and methods often face numerous challenges during measurement and installation. For example, traditional positioning methods cannot measure the axial position of the cable duct, especially for the first-layer cable duct, where the exit position of the lower cable duct from the tower cannot be accurately measured. This leads to a decrease in the accuracy of cable duct positioning and anchoring. Furthermore, since cable duct construction is a high-precision measurement task, any minute error can have a significant impact on the overall structure, preventing the installation of built-in dampers, or even causing cable wear, severely damaging the quality of the cable-stayed bridge and causing irreparable losses.

[0004] To address the aforementioned issues, there is an urgent need for a device and method that can improve the positioning accuracy of cable guide tubes and facilitate adjustment, thereby enhancing the positioning accuracy of cable guide tubes in various construction environments and reducing the complexity and workload during the adjustment process. Utility Model Content

[0005] In view of the above-mentioned prior art, this utility model proposes a device for precise positioning of cable guide tubes, which can realize precise adjustment of cable guide tubes, thereby improving the overall installation accuracy and reducing construction costs.

[0006] This utility model provides a device for precise positioning of a cable guide tube, including a positioning plate with a semi-circular groove. The diameter of the semi-circular groove is the same as the outer diameter of the cable guide tube. Connecting rods are provided on both sides of the semi-circular groove on the positioning plate. The central axes of the two connecting rods are on the same straight line as the positioning feature point. Prisms are provided at the outer ends of the two connecting rods. The two prisms are symmetrically arranged with respect to the positioning feature point. When the positioning feature point is perpendicularly engaged with the cable guide tube on the semi-circular groove, the central axis of the cable guide tube is on the same straight line.

[0007] Preferably, the positioning plate and the connecting rod are formed as a whole by gluing or welding. The prism is either manufactured separately or a general-purpose measuring prism is purchased.

[0008] Preferably, the positioning plate is made of acrylic sheet, solid wood, or stainless steel sheet.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: The device for precise positioning of cable guide tubes provided by this utility model uses common materials and has a simple and lightweight structure; the components can be pre-processed in the factory and used directly on site; the measurement method is simple and technically feasible, which greatly improves the installation accuracy of cable guide tubes and reduces the deviation of subsequent cable stay construction, saving a lot of time and manpower. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of a device for precise positioning of a cable guide tube according to an embodiment of the present invention.

[0011] Figure 2 This is a measurement schematic diagram of a device for precise positioning of a cable guide tube according to an embodiment of this utility model.

[0012] In the diagram, 1. Positioning plate; 2. Connecting rod; 3. Prism; 4. Positioning feature point. Detailed Implementation

[0013] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0014] Example: Figure 1 The device shown is for precise positioning of a cable guide tube, including a positioning plate 1. The positioning plate 1 is made of stainless steel sheet and is rectangular. A semi-circular groove is provided on one long side of the positioning plate 1. The semi-circular groove is symmetrically arranged with respect to the center line of the positioning plate 1. The diameter of the semi-circular groove is the same as the outer diameter of the cable guide tube.

[0015] Furthermore, connecting rods 2 are welded to both ends of the semi-circular slot on one side of the positioning plate 1. The two connecting rods 2 are of equal length and extend to the outside of the positioning plate 1. The central axis of the two connecting rods 2 is on the same straight line as the positioning feature point 4. A prism 3 is provided at the outer end of each of the two connecting rods 2. The two prisms 3 are symmetrically arranged with respect to the positioning feature point 4. When the positioning feature point 4 is perpendicularly engaged with the cable guide in the semi-circular slot, the central axis of the cable guide is on the same straight line. During the fabrication of the device, the positioning feature point 4 is laid out using a ruler and compass and then marked with a marker to assist in the installation of the device components.

[0016] like Figure 2 As shown, the measurement method of the device for precise positioning of the cable conduit includes the following steps: Step 1: Fix the positioning plate 1 radially to the vertical cable guide tube. According to the construction layout measurement principle, use a total station to measure the three-dimensional coordinates of the prisms 3 at both ends of the device. Step 2: Record the three-dimensional coordinates of the two prisms 3; Step 3: Calculate the average of the three-dimensional coordinates of the two prisms 3, which is the coordinate of the cable guide axis; Step 4: Compare the measured coordinates of the cable guide axis with the theoretical data for laying out the cable guide axis; Step 5: Adjust the cable guide according to the deviation value of the comparison until it meets the specification requirements.

[0017] The device in this embodiment can solve the problem of difficulty in measuring the axis of the cable guide tube during construction, creating higher efficiency, effectively improving the installation accuracy of the cable guide tube, and ensuring subsequent cable-stayed cable construction.

[0018] The above are merely embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent solutions made using the contents of this utility model specification, whether directly or indirectly applied to other related technical fields, are also within the patent protection scope of this utility model.

Claims

1. A device for precise positioning of a cable conduit, characterized in that, The device includes a positioning plate with a semi-circular groove. The diameter of the semi-circular groove is the same as the outer diameter of the cable guide tube. Connecting rods are provided on both sides of the semi-circular groove on the positioning plate. The central axes of the two connecting rods are on the same straight line as the positioning feature point. Prisms are provided at the outer ends of the two connecting rods. The two prisms are symmetrically arranged with respect to the positioning feature point. When the positioning feature point is perpendicularly engaged with the cable guide tube on the semi-circular groove, the central axis of the cable guide tube is on the same straight line.

2. The device for precise positioning of a cable conduit as described in claim 1, characterized in that, The positioning plate and the connecting rod are bonded or welded together to form a whole.

3. The device for precise positioning of a cable conduit as described in claim 1 or 2, characterized in that, The positioning plate is made of acrylic sheet, solid wood or stainless steel sheet.

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