Cable guide pipe positioning device
By using cable catheter positioning devices of long-axis benchmarking parts, short-axis benchmarking parts and horizontal reference benchmarking parts in the construction of cable-stayed bridges, combined with measuring prisms and total stations, the problem of difficult to ensure the accuracy of cable catheter positioning is solved. Higher positioning accuracy and lower errors are achieved, ensuring the control accuracy of cable-stayed cable-type.
Patent Information
- Application Number
- CN202420644982.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-29
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-03-29
AI Technical Summary
In the construction of cable-stayed bridges, the positioning accuracy of the cable conduit is difficult to ensure, and the prior art only relies on two control points, resulting in large errors.
The cable catheter positioning device is adopted that includes long axis benchmarks, short axis benchmarks and horizontal reference benchmarks. The position of the cable catheter is accurately determined through the intersection points and angles of these benchmarks, and combined with the measurement prism and total station instrument Perform accurate measurements and provide multiple control points to improve positioning accuracy.
It effectively reduces the error of cable catheter positioning, improves positioning accuracy, and ensures the control accuracy of cable-stayed cable line type, thereby extending the service life of cable-stayed cables and the safety of bridge use.
Smart Images
Figure CN222183081U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge construction, in particular to a cable guide tube positioning device. Background Art
[0002] During the construction of a cable-stayed bridge, the control of the cable line shape is crucial. If the cable line shape is not well controlled, friction will occur between the cable and the cable guide tube sleeved outside the cable end, affecting the service life of the cable and further affecting the safety of the entire bridge. The control of the cable line shape is determined by the spatial position accuracy of the cable guide tube. During the construction of a cable-stayed bridge, the measurement and positioning of the cable guide tube is a task with high precision requirements and great measurement difficulty.
[0003] The cable guide is usually fixed to the tower column or beam surface. Specifically, one end of the cable guide is embedded and fixed in the tower column or beam, and the other end extends out of the tower column or beam. Figure 1 As shown, the cable guide tube 1 also needs to be set at an angle and the two ends of the cable guide tube 1 are usually elliptical. The existing cable guide tube measurement and positioning process is usually achieved by using steel bars 12. Specifically, before locating the position of the cable guide tube, the centers of the ellipses at the two end faces of the cable guide tube 1 are first marked as the tower entrance anchor point 10 and the tower exit anchor point 11, and a steel bar 12 extending along the minor axis of the ellipse is fixed at the two ellipse end faces of the cable guide tube 1. Then, at the construction site, the positions of the tower entrance anchor point 10 and the tower exit anchor point 11 are measured and laid out according to other known points, and then the center points of the two steel bars 12 at the end faces of the cable guide tube 1 are respectively combined with the tower entrance anchor point 10 and the tower exit anchor point 11. After the combination is completed, the construction position of the cable guide tube 1 can be located.
[0004] However, in the existing positioning process of the cable guide tube 1, there are only two control points, namely the tower entrance anchor point 10 and the tower exit anchor point 11, without any redundant verification means, which makes it difficult to ensure the positioning accuracy of the cable guide tube 1 and results in a large error. Utility Model Content
[0005] The utility model aims to provide a cable guide tube positioning device to alleviate the technical problem that in the cable guide tube positioning process in the prior art, there are only two control points, namely the tower entrance anchor point and the tower exit anchor point, and there is no redundant verification means, which makes it difficult to ensure the positioning accuracy of the cable guide tube and results in large errors.
[0006] In a first aspect, the utility model provides a cable catheter positioning device, including a long axis alignment member, a short axis alignment member and a horizontal reference alignment member;
[0007] The major axis alignment piece, the minor axis alignment piece and the horizontal reference alignment piece are all in a straight line shape, and are used to be fixed on the elliptical end face of the cable guide tube, and the major axis alignment piece extends along the major axis of the elliptical end face of the cable guide tube, and the minor axis alignment piece extends along the minor axis of the elliptical end face of the cable guide tube; the intersection of the major axis alignment piece and the minor axis alignment piece is the central anchor point, and a top control point and a bottom control point are provided on the major axis alignment piece, and the top control point and the bottom control point respectively correspond to the two major axis endpoints of the elliptical end face of the cable guide tube;
[0008] The horizontal reference alignment piece and the short axis alignment piece are arranged at an angle, and the angle between the horizontal reference alignment piece and the short axis alignment piece is equal to the inclination angle of the short axis on the elliptical end surface of the cable guide tube relative to the horizontal plane.
[0009] In an optional embodiment, a contour plate is further included, which is consistent with the shape of the elliptical end surface of the cable guide tube. The contour plate is used to be fixed on the elliptical end surface of the cable guide tube, and the major axis alignment member, the minor axis alignment member and the horizontal reference alignment member are all fixed on the contour plate.
[0010] In an optional embodiment, a window is provided on the contour plate, one side of the window overlaps with the horizontal reference mark, and the midpoint of the side of the window overlaps with the central anchor point, and the window is used to accommodate a measuring prism.
[0011] In an optional embodiment, the window is square.
[0012] In an optional embodiment, the contour plate is a transparent plate.
[0013] In an optional embodiment, the contour plate is made of plastic.
[0014] In an optional embodiment, the major axis alignment member, the minor axis alignment member and the horizontal reference alignment member are all telescopic structures.
[0015] In an optional embodiment, the long axis alignment member includes a long axis movable rod and a hollow long axis fixed rod, and the short axis alignment member includes a short axis movable rod and a hollow short axis fixed rod;
[0016] The middle part of the long-axis fixing rod and the middle part of the short-axis fixing rod are cross-fixedly connected, and the long-axis movable rod is sleeved at both ends of the long-axis fixing rod, and the long-axis movable rod can move along its length direction inside the long-axis fixing rod; the short-axis movable rod is sleeved at both ends of the short-axis fixing rod, and the short-axis movable rod can move along its short direction inside the short-axis fixing rod.
[0017] In an optional embodiment, the widths of the major axis alignment member, the minor axis alignment member and the horizontal reference alignment member are all no greater than 3 mm.
[0018] In an optional embodiment, the width of the major axis alignment member, the minor axis alignment member and the horizontal reference alignment member are all 2 mm.
[0019] The cable guide tube positioning device provided by the utility model comprises a major axis alignment member, a minor axis alignment member and a horizontal reference alignment member; the major axis alignment member, the minor axis alignment member and the horizontal reference alignment member are all in a straight line shape, and are used to be fixed on the elliptical end face of the cable guide tube, and the major axis alignment member extends along the major axis of the elliptical end face of the cable guide tube, and the minor axis alignment member extends along the minor axis of the elliptical end face of the cable guide tube; the intersection point of the major axis alignment member and the minor axis alignment member is the central anchoring point, and a top control point and a bottom control point are provided on the major axis alignment member, and the top control point and the bottom control point respectively correspond to the two major axis end points of the elliptical end face of the cable guide tube; the horizontal reference alignment member and the minor axis alignment member are arranged at an angle, and the angle between the horizontal reference alignment member and the minor axis alignment member is equal to the inclination angle of the minor axis on the elliptical end face of the cable guide tube relative to the horizontal plane. When using the cable guide tube positioning device provided by the utility model to locate the position of the cable guide tube, the major axis alignment member, the minor axis alignment member and the horizontal reference alignment member can be first fixed on one of the elliptical end faces of the cable guide tube, and the center anchor point, the top control point and the bottom control point can be marked on the elliptical end face of the cable guide tube. Then, the polar coordinate method of the total station can be used to measure and lay out the position (coordinates and elevation) of the bottom control point of the elliptical end face of the cable guide tube at the construction site. Then, the cable guide tube is moved to the construction site, and the bottom control point on the elliptical end face of the cable guide tube is made to coincide with the position of the laid out bottom control point. At this time, the position of the elliptical end face of the cable guide tube is roughly determined. Then, a measuring prism can be installed at the center anchor point of the elliptical end face of the cable guide tube, so that the position of the center anchor point can be accurately determined by using the measuring prism in conjunction with the total station, and then the position of the top control point and the bottom control point can be accurately determined based on the measuring prism at the center anchor point and the adjustment instructions of the total station. After the top control point and the bottom control point on the long axis alignment part are respectively compounded with the positions of the top control point and the bottom control point that have been accurately determined above, the position of the elliptical end face of the cable guide tube can be accurately located at the construction site. Since the process of using a measuring prism in conjunction with a total station for measurement and layout is an existing technology, the specific use process of the total station and the measuring prism will not be repeated here. In addition, after completing the positioning process of one of the elliptical end faces of the cable guide tube, the above operation steps can be repeated to locate the position of the other elliptical end face of the cable guide tube. After the positioning process of both elliptical end faces of the cable guide tube is completed, the position of the cable guide tube can be effectively determined. It should also be noted that after positioning any elliptical end face of the cable duct, a spirit level can be used to detect the horizontal state of the horizontal reference alignment piece on the elliptical end face of the cable duct. When the horizontal reference alignment piece is flush with the spirit level or the angle between the horizontal reference alignment piece and the spirit level meets the design requirements, it indicates that the positioning accuracy of the elliptical end face of the cable duct meets the requirements. At this time, the positioning accuracy of the cable duct can be effectively guaranteed.
[0020] Compared with the prior art, the cable guide tube positioning device provided by the utility model can accurately determine the position of the cable guide tube through three control points: the central anchor point, the top control point and the bottom control point, and the cable guide tube positioning device can verify the position of the cable guide tube by detecting the horizontal state of the horizontal reference mark, thereby effectively ensuring the positioning accuracy of the cable guide tube and reducing the positioning error of the cable guide tube. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 It is a structural schematic diagram of the existing cable guide tube and steel bars;
[0023] Figure 2 A schematic diagram of the structure of multiple cable guide tubes on a tower column provided by an embodiment of the utility model;
[0024] Figure 3 A schematic diagram of the structure of a cable guide tube and a cable guide tube positioning device provided in an embodiment of the utility model;
[0025] Figure 4 A schematic structural diagram of a cable catheter positioning device provided in an embodiment of the utility model.
[0026] Icons: 1-cable guide tube; 10-tower entrance anchor point; 11-tower exit anchor point; 12-rebar; 13-tower entrance; 14-tower exit; 2-long axis alignment piece; 20-top control point; 21-bottom control point; 3-short axis alignment piece; 30-short axis control point; 4-horizontal reference alignment piece; 5-center anchor point; 6-contour plate; 60-window. DETAILED DESCRIPTION
[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.
[0028] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0029] In conjunction with the accompanying drawings, some embodiments of the present invention are described in detail below. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.
[0030] Example:
[0031] like Figure 2 As shown, during the construction of the cable-stayed bridge, multiple cable guide tubes 1 are distributed in sequence along the height direction on both sides of the tower column, or multiple cable guide tubes 1 extending along the length direction are distributed on the beam surface of the cable-stayed bridge. Regardless of the cable guide tube 1 at the tower column or the cable guide tube 1 at the beam surface, each cable guide tube 1 includes two elliptical end faces, and one of the elliptical end faces of the cable guide tube 1 is pre-embedded and fixed in the tower column or beam, and the other end extends out of the tower column or beam.
[0032] The end of the cable guide tube 1 pre-buried and fixed in the tower column or beam is recorded as the tower entrance 13 of the cable guide tube 1, and the end of the cable guide tube 1 extending outside the tower column or beam is recorded as the tower exit 14 of the cable guide tube 1. When the cable guide tube positioning device provided in this embodiment is used to position the cable guide tube 1, the tower entrance 13 and the tower exit 14 of the cable guide tube 1 can be positioned respectively.
[0033] Specifically, Figure 3 and Figure 4 As shown, the cable guide tube positioning device provided in this embodiment includes a long axis alignment member 2, a short axis alignment member 3 and a horizontal reference alignment member 4; the long axis alignment member 2, the short axis alignment member 3 and the horizontal reference alignment member 4 are all in a straight line shape, and the long axis alignment member 2, the short axis alignment member 3 and the horizontal reference alignment member 4 are all used to be fixed on the elliptical end face of the cable guide tube 1, and the long axis alignment member 2 extends along the long axis of the elliptical end face of the cable guide tube 1, and the short axis alignment member 3 extends along the short axis of the elliptical end face of the cable guide tube 1; The intersection of the major axis alignment member 2 and the minor axis alignment member 3 is the central anchor point 5. The major axis alignment member 2 is provided with a top control point 20 and a bottom control point 21, which respectively correspond to the two major axis endpoints of the elliptical end face of the cable guide tube 1; the horizontal reference alignment member 4 is arranged at an angle to the minor axis alignment member 3, and the angle between the horizontal reference alignment member 4 and the minor axis alignment member 3 is equal to the inclination angle of the minor axis on the elliptical end face of the cable guide tube 1 relative to the horizontal plane.
[0034] When positioning the cable guide tube 1, the major axis alignment member 2, the minor axis alignment member 3 and the horizontal reference alignment member 4 can be first fixed on the elliptical end face at the tower outlet 14 of the cable guide tube 1, and the center anchor point 5, the top control point 20 and the bottom control point 21 can be marked on the elliptical end face. Then, the polar coordinate method of the total station is used to measure and lay out the position (coordinates and elevation) of the bottom control point 21 of the elliptical end face at the tower outlet 14 of the cable guide tube 1 at the construction site. Then, the cable guide tube 1 is moved to the construction site, and the bottom control point 21 on the elliptical end face at the tower outlet 14 of the cable guide tube 1 is made to coincide with the position of the laid out bottom control point 21. At this time, the position of the elliptical end face at the tower outlet 14 of the cable guide tube 1 is roughly determined.
[0035] Then, a measuring prism can be installed at the center anchor point 5 of the elliptical end face of the cable guide tube 1, so as to use the measuring prism in conjunction with the total station to accurately determine the position of the center anchor point 5, and then based on the measuring prism at the center anchor point 5 and the adjustment instructions of the total station, the positions of the top control point 20 and the bottom control point 21 can be accurately determined, and the top control point 20 and the bottom control point 21 on the long axis alignment part 2 are respectively combined with the positions of the top control point 20 and the bottom control point 21 that have been accurately determined above, so that the position of the elliptical end face of the cable guide tube 1 can be accurately located at the construction site. Since the process of using the measuring prism in conjunction with the total station for measurement and layout is an existing technology, the specific use process of the total station and the measuring prism will not be repeated here.
[0036] After completing the positioning process of the elliptical end surface at the tower outlet 14 of the cable duct 1, the above operation steps can be repeated to position the elliptical end surface at the tower inlet 13 of the cable duct 1. After completing the positioning processes of the elliptical end surfaces at the tower outlet 14 and the tower inlet 13 of the cable duct 1, the position of the cable duct 1 can be effectively determined.
[0037] It should also be noted that after the elliptical end surface at either end of the cable duct 1 is positioned, that is, after the coordinates and elevations of the marking points on the elliptical end surface at either end of the cable duct 1 meet the design requirements, a spirit level can be used to detect the horizontal state of the horizontal reference alignment piece 4 on the elliptical end surface of the cable duct 1. When the horizontal reference alignment piece 4 is flush with the spirit level or the angle between the horizontal reference alignment piece 4 and the spirit level meets the design requirements, it indicates that the positioning accuracy of the elliptical end surface of the cable duct 1 meets the requirements. At this time, the positioning accuracy of the cable duct 1 can be effectively guaranteed.
[0038] In addition, in order to improve positioning efficiency, the above-mentioned level ruler can adopt an electronic level ruler.
[0039] Compared with the prior art, the cable guide tube positioning device provided in this embodiment can accurately determine the position of the cable guide tube 1 through the three control points of the central anchor point 5, the top control point 20 and the bottom control point 21, and the cable guide tube positioning device can verify the position of the cable guide tube 1 by detecting the horizontal state of the horizontal reference mark 4, thereby effectively ensuring the positioning accuracy of the cable guide tube 1 and reducing the positioning error of the cable guide tube 1.
[0040] It should be noted that, in order to further improve the positioning accuracy, two short-axis control points 30 may be provided on the short-axis alignment member 3, and the two short-axis control points 30 respectively correspond to the two short-axis end points of the elliptical end face of the cable guide tube 1. When locating and calibrating the position of the elliptical end face of the cable guide tube 1, the positions of the two short-axis control points 30 may be accurately determined according to the measurement prism at the central anchor point 5 in conjunction with the adjustment instructions of the total station. After the two short-axis control points 30 on the short-axis alignment member 3 are respectively combined with the positions of the two short-axis control points 30 that have been accurately determined, the position of the elliptical end face of the cable guide tube 1 may be further calibrated and verified, thereby improving the positioning accuracy of the cable guide tube 1.
[0041] In this embodiment, the lengths of the major axis alignment member 2, the minor axis alignment member 3 and the horizontal reference alignment member 4 can be customized according to the major and minor axes and other dimensions of the elliptical end surface of the cable guide tube 1 to be positioned, so that when the major axis alignment member 2, the minor axis alignment member 3 and the horizontal reference alignment member 4 are installed on the elliptical end surface of the cable guide tube 1, the two ends of the major axis alignment member 2, the two ends of the minor axis alignment member 3 and the two ends of the horizontal reference alignment member 4 can respectively contact the edge of the elliptical end surface of the cable guide tube 1. Alternatively, the lengths of the major axis alignment member 2, the minor axis alignment member 3 and the horizontal reference alignment member 4 can respectively be greater than the various dimensions of the elliptical end surface of the cable guide tube 1, so that when the major axis alignment member 2, the minor axis alignment member 3 and the horizontal reference alignment member 4 are installed on the elliptical end surface of the cable guide tube 1, the two ends of the major axis alignment member 2, the two ends of the minor axis alignment member 3 and the two ends of the horizontal reference alignment member 4 can respectively cross the edge of the elliptical end surface of the cable guide tube 1.
[0042] In order to facilitate the use of the cable guide tube positioning device to mark the center anchor point 5, the top control point 20, the bottom control point 21 and the horizontal reference line on the elliptical end face of the cable guide tube 1, in this embodiment, the lengths of the major axis alignment member 2, the minor axis alignment member 3 and the horizontal reference alignment member 4 are preferably customized according to the major and minor axes and other dimensions of the elliptical end face of the cable guide tube 1.
[0043] Further, such as Figure 4 As shown, the cable guide tube positioning device provided in this embodiment may further include a contour plate 6, which is consistent with the shape of the elliptical end surface of the cable guide tube 1. The contour plate 6 is used to be fixed on the elliptical end surface of the cable guide tube 1, and the major axis alignment member 2, the minor axis alignment member 3 and the horizontal reference alignment member 4 are all fixed on the contour plate 6.
[0044] The contour plate 6 is used to integrate the major axis alignment part 2, the minor axis alignment part 3 and the horizontal reference alignment part 4 into one. When the contour plate 6 is fixed to the elliptical end face of the cable guide tube 1 and the edge of the contour plate 6 is matched with the edge of the elliptical end face of the cable guide tube 1, the major axis alignment part 2, the minor axis alignment part 3 and the horizontal reference alignment part 4 can respectively accurately mark the positions of the major axis, the minor axis and the horizontal reference line on the elliptical end face of the cable guide tube 1, thereby facilitating the construction personnel to intuitively know the positions of the middle anchor point, the top control point 20, the bottom control point 21 and the horizontal reference line on the elliptical end face of the cable guide tube 1 during the subsequent positioning process of the cable guide tube 1.
[0045] It should be noted that the material of the contour plate 6 can be a plate that is easy to cut, so that the contour plate 6 corresponding to the size of the elliptical end surface of the cable guide tube 1 can be customized. For example, the material of the contour plate 6 can be plastic.
[0046] When manufacturing the cable guide tube positioning device, a construction coordinate system can be first established on a plastic sheet, and then the positions of the long axis alignment part 2, the short axis alignment part 3, and the horizontal reference alignment part 4 can be marked on the plastic sheet using the dimensions and design coordinates of the elliptical end surface of the cable guide tube 1, and the outer contour line can be drawn on the plastic sheet. After the contour line is drawn, the plastic sheet can be cut along the contour line to obtain a contour plate 6 fixed with the long axis alignment part 2, the short axis alignment part 3, and the horizontal reference alignment part 4.
[0047] In order to prevent the long-axis alignment part 2, the short-axis alignment part 3 and the horizontal reference alignment part 4 from occupying too much space and reducing the positioning accuracy, in this embodiment, the long-axis alignment part 2, the short-axis alignment part 3 and the horizontal reference alignment part 4 can all be formed by drawing on a plastic sheet. At this time, the long-axis alignment part 2, the short-axis alignment part 3 and the horizontal reference alignment part 4 are all drawn lines.
[0048] It should also be noted that the cable guide tube positioning device includes a contour plate 6 and the major axis alignment member 2, the minor axis alignment member 3 and the horizontal reference alignment member 4 are all formed by drawing on a plastic plate. The center anchor point 5, the top control point 20 and the bottom control point 21 are all accurately marked by construction coordinates. Compared with the prior art method of using the center of the steel bar 12 to mark the entry and exit anchor points 10 and the tower exit anchor points 11, errors can be effectively avoided and the positioning accuracy of the cable guide tube 1 can be effectively improved.
[0049] In addition, the cable guide tube positioning device provided in this embodiment can not only improve the positioning accuracy of the cable guide tube 1, but also facilitate the subsequent determination and calibration of the position of the cable guide tube 1 by cooperating with the total station and the measuring prism to quickly and accurately locate the position of the cable guide tube 1, thereby effectively improving the positioning efficiency of the cable guide tube 1.
[0050] Further, such as Figure 4 As shown, a window 60 is provided on the contour plate 6, one side of the window 60 overlaps with the horizontal reference mark 4, and the midpoint of the side of the window 60 overlaps with the central anchor point 5, and the window 60 is used to accommodate a measuring prism.
[0051] The window 60 is used to provide an installation space for the measuring prism, so as to improve the installation stability of the measuring prism on the elliptical end surface of the cable guide tube 1 .
[0052] There is no limitation on the shape of the window 60. To facilitate accommodating the measuring prism, the window 60 is preferably square in this embodiment.
[0053] Furthermore, the side length of the window 60 may be 15 cm.
[0054] like Figure 4 As shown, the window 60 may be located on a side of the horizontal reference alignment member 4 close to the top control point 20 .
[0055] In this embodiment, in order to make the edge of the contour plate 6 easily and accurately match the edge of the elliptical end surface of the cable guide tube 1, in this embodiment, the contour plate 6 is preferably a transparent plate.
[0056] Furthermore, the material of the outline plate 6 may be acrylic, and in this case the outline plate 6 may be an acrylic transparent plate.
[0057] It should be noted that, in order to make the cable guide tube positioning device provided in this embodiment adaptable to cable guide tubes 1 of different sizes, the long axis alignment member 2, the short axis alignment member 3 and the horizontal reference alignment member 4 in the cable guide tube positioning device can all adopt a telescopic structure.
[0058] Furthermore, the long-axis marking component 2 includes a long-axis movable rod and a hollow long-axis fixed rod, and the short-axis marking component 3 includes a short-axis movable rod and a hollow short-axis fixed rod; the middle part of the long-axis fixed rod and the middle part of the short-axis fixed rod are cross-fixedly connected, and the long-axis movable rod is sleeved at both ends of the long-axis fixed rod, and the long-axis movable rod can move along its length direction inside the long-axis fixed rod; the short-axis movable rod is sleeved at both ends of the short-axis fixed rod, and the short-axis movable rod can move along its short direction inside the short-axis fixed rod.
[0059] The long axis fixing rod and the short axis fixing rod may be cross-connected by welding or integrally formed. Further, the long axis fixing rod and the short axis fixing rod may be formed by a cross-shaped hollow sleeve structure.
[0060] In order to facilitate the adjustment of the length of the long-axis marking part 2 and the short-axis marking part 3, and to ensure the structural stability of the long-axis marking part 2 and the short-axis marking part 3 after the length adjustment, in this embodiment, the long-axis fixing rod and the short-axis fixing rod are preferably provided with internal threads inside, and the long-axis movable rod and the short-axis movable rod are preferably provided with external threads. The long-axis movable rod is connected to the long-axis fixing rod by a threaded connection, and the short-axis movable rod is connected to the short-axis fixing rod by a threaded connection.
[0061] Correspondingly, the horizontal reference alignment member 4 can also be formed by connecting a movable rod and a hollow fixed rod. Specifically, the movable rod is provided with an external thread, and the fixed rod is provided with an internal thread. The movable rod and the fixed rod are connected by a threaded connection.
[0062] To prevent the major axis alignment member 2 , the minor axis alignment member 3 and the horizontal reference alignment member 4 from occupying too much space and affecting the positioning accuracy, in this embodiment, the widths of the major axis alignment member 2 , the minor axis alignment member 3 and the horizontal reference alignment member 4 are preferably no greater than 3 mm.
[0063] Specifically, the widths of the major axis alignment member 2 , the minor axis alignment member 3 and the horizontal reference alignment member 4 may all be 2 mm.
[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. A cable catheter positioning device, characterized in that: It comprises a long axis alignment part (2), a short axis alignment part (3) and a horizontal reference alignment part (4); The major axis alignment piece (2), the minor axis alignment piece (3) and the horizontal reference alignment piece (4) are all in a straight line shape. The major axis alignment piece (2), the minor axis alignment piece (3) and the horizontal reference alignment piece (4) are all used to be fixed on the elliptical end surface of the cable guide tube (1), and the major axis alignment piece (2) extends along the major axis of the elliptical end surface of the cable guide tube (1), and the minor axis alignment piece (3) extends along the minor axis of the elliptical end surface of the cable guide tube (1); the intersection of the major axis alignment piece (2) and the minor axis alignment piece (3) is the central anchor point (5), and the major axis alignment piece (2) is provided with a top control point (20) and a bottom control point (21), and the top control point (20) and the bottom control point (21) respectively correspond to the two major axis endpoints of the elliptical end surface of the cable guide tube (1); The horizontal reference alignment member (4) and the short axis alignment member (3) are arranged at an angle, and the angle between the horizontal reference alignment member (4) and the short axis alignment member (3) is equal to the inclination angle of the short axis on the elliptical end surface of the cable guide tube (1) relative to the horizontal plane.
2. The cable catheter positioning device according to claim 1, characterized in that: It also comprises a contour plate (6), the contour plate (6) being consistent with the shape of the elliptical end surface of the cable guide tube (1), the contour plate (6) being used to be fixed on the elliptical end surface of the cable guide tube (1), and the major axis alignment piece (2), the minor axis alignment piece (3) and the horizontal reference alignment piece (4) are all fixed on the contour plate (6).
3. The cable catheter positioning device according to claim 2, characterized in that: The contour plate (6) is provided with a window (60), one side of the window (60) overlaps with the horizontal reference alignment member (4), and the midpoint of the side of the window (60) overlaps with the central anchor point (5), and the window (60) is used to accommodate a measuring prism.
4. The cable catheter positioning device according to claim 3, characterized in that: The window (60) is square.
5. The cable catheter positioning device according to claim 2, characterized in that: The contour plate (6) is a transparent plate.
6. The cable catheter positioning device according to claim 5, characterized in that: The material of the contour plate (6) is plastic.
7. The cable catheter positioning device according to any one of claims 1 to 6, characterized in that: The long axis alignment member (2), the short axis alignment member (3) and the horizontal reference alignment member (4) are all telescopic structures.
8. The cable catheter positioning device according to claim 7, characterized in that: The long axis alignment member (2) comprises a long axis movable rod and a hollow long axis fixed rod, and the short axis alignment member (3) comprises a short axis movable rod and a hollow short axis fixed rod; The middle part of the long-axis fixing rod and the middle part of the short-axis fixing rod are cross-fixedly connected, and the long-axis movable rod is sleeved at both ends of the long-axis fixing rod, and the long-axis movable rod can move along its length direction inside the long-axis fixing rod; the short-axis movable rod is sleeved at both ends of the short-axis fixing rod, and the short-axis movable rod can move along its short direction inside the short-axis fixing rod.
9. The cable catheter positioning device according to any one of claims 1 to 6, characterized in that: The widths of the major axis alignment piece (2), the minor axis alignment piece (3) and the horizontal reference alignment piece (4) are all no greater than 3 millimeters.
10. The cable catheter positioning device according to claim 9, characterized in that: The widths of the major axis alignment piece (2), the minor axis alignment piece (3) and the horizontal reference alignment piece (4) are all 2 millimeters.