Positioning tool

Abstract

The utility model belongs to the technical field of bridge construction, and discloses a positioning tool which is used for accurately positioning a cable guide pipe and comprises a positioning circular plate and a plurality of locking pieces. The positioning circular plate comprises an outer fixing part and an inner extending part, the axes of the outer fixing part and the inner extending part coincide, a plurality of locking parts are arranged on the outer wall of the outer fixing part, and a positioning hole is formed in the center of the outer fixing part. The inner extending part is provided with a plurality of adjusting assemblies, and each adjusting assembly comprises a movable rod. When the positioning tool is used, the inner extending part can extend into the cable guide pipe, the outer fixing part is located outside the cable guide pipe, the locking part is supported on a pipe opening of the cable guide pipe, and the movable rods can abut against the inner wall of the cable guide pipe so that the axis of the positioning circular plate can coincide with the axis of the cable guide pipe. The multiple locking pieces and the multiple locking parts are arranged in a one-to-one correspondence mode, and the locking pieces can lock and fix the locking parts and the cable guide pipe. The positioning tool is easy to operate, and the accuracy and construction efficiency of the cable guide pipe are improved; and the positioning tool can be repeatedly used, so that the construction cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a positioning tool. Background Art

[0002] In the construction of cable-stayed bridge cable guide tubes, the cable guide tubes need to be cast in concrete, and the cable stays are inserted into the cable guide tubes. During the construction of cable-stayed bridges, whether the cable stays can be successfully locked depends largely on whether the position of the cable guide tubes is accurate.

[0003] In the prior art, the positioning method of the cable guide tube is: use a ruler on site to measure the inner diameter of the pipe mouth of the cable guide tube, spot weld steel bars or channel steels of equal length to the pipe mouth of the cable guide tube, find the vertex of the pipe mouth through centrifugal force, and then use a prism to stand at the vertex. The center of the prism can accurately reflect the center position of the pipe mouth. According to the calculated coordinates of the pipe mouth, the spatial coordinates of the cable guide tube can be accurately laid out in conjunction with a total station.

[0004] The above positioning method has the following defects: 1) The on-site operation accuracy is relatively low, which is not conducive to the precise positioning of the cable guide tube; 2) Since welding is required on the cable guide tube, the cable guide tube is damaged to a certain extent and needs to be re-polished and painted with anti-corrosion paint, which wastes manpower and material resources and reduces construction efficiency; 3) After each positioning is completed, the steel bars or channel steels need to be cut off and cannot be reused. Utility Model Content

[0005] The utility model aims to provide a positioning tool, which is easy to operate and can accurately position the cable guide tube, effectively improving the construction efficiency and construction accuracy, and can also be reused to reduce the construction cost.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] Positioning tooling, including:

[0008] The positioning circular plate comprises an outer fixing portion and an inner extending portion whose axes coincide with each other, a plurality of locking portions are arranged on the outer wall of the outer fixing portion, a positioning hole is arranged at the center of the outer fixing portion, and a plurality of adjustment components are arranged evenly along the circumferential direction of the positioning circular plate, and the adjustment component comprises a movable rod, the movable rod is adjustably connected to the inner extending portion, and the movable rod is used to abut against the inner wall of the cable guide tube so that the axis of the positioning circular plate coincides with the axis of the cable guide tube;

[0009] A plurality of locking members are arranged corresponding to the plurality of locking parts one by one, and the locking members are used to lock and fix the locking parts and the cable guide tube.

[0010] As an optional solution, the outer wall of the inner extending portion is provided with a plurality of first threaded holes corresponding one-to-one to the movable rods, and the movable rods are threadedly connected to the first threaded holes.

[0011] As an optional scheme, the end surface of the inner extending portion facing away from the outer fixing portion is provided with a mounting groove corresponding to the adjusting component one by one, and the outer wall of the inner extending portion is provided with a plurality of the first threaded holes corresponding to and connected to the mounting groove one by one, and the adjusting component also includes an elastic member, which is arranged in the mounting groove, and the elastic member elastically abuts between the movable rod and the groove wall of the mounting groove.

[0012] As an optional solution, the adjustment assembly further includes a partition plate, which is slidably disposed in the mounting groove and clamped between the movable rod and the elastic member.

[0013] As an optional solution, a scale for measuring the position of the partition is provided on the edge of the installation groove, and the scale is extended along the adjustment direction of the movable rod.

[0014] As an optional solution, the elastic member is a spring.

[0015] As an optional solution, the locking portion includes a horizontal plate and a vertical plate that are vertically connected to each other, the horizontal plate is fixedly connected to the outer wall of the external fixing portion, and the horizontal plate can abut against the pipe opening of the cable guide tube, the vertical plate is provided with a second threaded hole, and the locking piece is a screw, which is threaded into the second threaded hole and can abut against the outer wall of the cable guide tube.

[0016] As an optional solution, the adjustment components are provided in four groups.

[0017] As an optional solution, four locking parts are provided.

[0018] As an optional solution, the locking portion is connected to the outer fixing portion by welding.

[0019] Beneficial effects of the utility model:

[0020] The utility model provides a positioning tool which is easy to operate. The distance that the movable rod extends out from the outer wall of the inner extension part is adjusted according to the inner diameter of the cable guide tube so that the outer ends of the plurality of movable rods can match and abut against the inner diameter of the cable guide tube. The positioning tool is placed in the cable guide tube to perform center positioning, thereby improving the accuracy and construction efficiency of the cable guide tube. The positioning tool is also locked and fixed by a locking piece to further improve the firmness of the connection. In addition, the positioning tool can be repeatedly used, thereby reducing construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a schematic diagram of the structure of the positioning tool provided by the embodiment of the utility model when in use;

[0022] Figure 2 It is a structural schematic diagram of the positioning tool provided by the embodiment of the utility model.

[0023] In the figure:

[0024] 1. Positioning circular plate; 11. External fixing part; 111. Locking part; 1111. Horizontal plate; 1112. Vertical plate; 112. Positioning hole; 12. Internal extension part; 121. Adjustment assembly; 1211. Movable rod; 1213. Partition plate; 1212. Elastic member; 122. Mounting groove;

[0025] 2. Locking parts;

[0026] 100. Cable catheter. DETAILED DESCRIPTION

[0027] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar components or components having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection, it can be a mechanical connection or an electrical connection, it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the description of the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature being in contact not directly but through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0031] The embodiment of the utility model provides a positioning tool for accurately positioning the cable guide tube 100 .

[0032] like Figure 1-Figure 2 As shown, the positioning fixture includes a positioning circular plate 1 and a plurality of locking members 2. The positioning circular plate 1 includes an outer fixing portion 11 and an inner extending portion 12 whose axes coincide with each other. The outer wall of the outer fixing portion 11 is provided with a plurality of locking portions 111, and a positioning hole 112 is provided at the center of the outer fixing portion 11. The positioning hole 112 is used to place a prism to conveniently reflect the center position of the orifice of the cable guide tube 100. The inner extending portion 12 is provided with a plurality of adjustment components 121 evenly arranged along the circumferential direction of the positioning circular plate 1. The adjustment component 121 includes a movable rod 1211, which is adjustably connected to the inner extending portion 12, and the movable rod 1211 is used to abut against the inner wall of the cable guide tube 100. When the positioning tool is used, the inner insertion portion 12 can be inserted into the cable guide tube 100, the outer fixing portion 11 is located outside the cable guide tube 100, and the locking portion 111 is supported on the pipe mouth of the cable guide tube 100. The multiple movable rods 1211 can abut against the inner wall of the cable guide tube 100 to make the axis of the positioning circular plate 1 coincide with the axis of the cable guide tube 100, and the center of the cable guide tube 100 can be reflected through the positioning hole 112.

[0033] The locking members 2 are arranged in one-to-one correspondence with the locking portions 111 . After the positioning circular plate 1 is positioned by the adjusting assembly 121 , the locking members 2 can lock and fix the locking portions 111 and the cable guide tube 100 , so as to further ensure the firmness of the connection between the positioning circular plate 1 and the cable guide tube 100 .

[0034] The positioning tool is easy to operate. The distance that the movable rod 1211 extends out of the outer wall of the inner insertion part 12 is adjusted according to the inner diameter of the cable guide tube 100, so that the outer ends of the plurality of movable rods 1211 can match and abut against the inner diameter of the cable guide tube 100. The positioning tool is placed in the cable guide tube 100 to perform center positioning, thereby improving the accuracy and construction efficiency of the cable guide tube 100. The cable guide tube 100 is also locked and fixed by the locking piece 2, thereby further improving the firmness of the connection. In addition, the positioning tool can be repeatedly used, thereby reducing construction costs.

[0035] In this embodiment, the outer wall of the inner extension portion 12 is provided with a plurality of first threaded holes corresponding to the movable rods 1211 one by one, and the movable rods 1211 are threadedly connected to the first threaded holes, and the position of the movable rods 1211 can be adjusted by rotating the movable rods 1211. Optionally, in order to facilitate the rotation of the movable rods 1211, a slot or a cross slot capable of inserting a screwdriver can be provided at the outer end of the movable rods 1211.

[0036] like Figure 2As shown, the end face of the inner extending portion 12 facing away from the outer fixing portion 11 is provided with a mounting groove 122 corresponding one-to-one with the adjustment component 121, and the outer wall of the inner extending portion 12 is provided with a plurality of first threaded holes corresponding one-to-one with and connected to the mounting groove 122. The adjustment component 121 includes an elastic member 1212, and the elastic member 1212 is arranged in the mounting groove 122. The elastic member 1212 elastically abuts between the movable rod 1211 and the groove wall of the mounting groove 122 to provide a thrust for the movable rod 1211 to prevent the movable rod 1211 from loosening after the position is adjusted, thereby reducing the accuracy.

[0037] The adjustment assembly 121 further includes a partition 1213, which is slidably disposed in the mounting groove 122 and clamped between the movable rod 1222 and the elastic member 1212, so that the movable rod 1211 can squeeze the elastic member 1212 through the partition 1213 when adjusting the position, and the structural design is more reasonable.

[0038] In order to facilitate the grasp of the extension distance of the movable rod 1211, a scale is set on the edge of the installation groove 122. The scale can be set by etching. The scale is extended along the adjustment direction of the movable rod 1211. The relative position relationship between the partition 1213 and the scale can reflect the distance that the movable rod 1211 extends from the outer wall of the inner extension part 12, which makes adjustment more convenient and does not require the aid of other tools.

[0039] Optionally, the elastic member 1212 may be a spring.

[0040] Optionally, the locking portion 111 includes a transverse plate 1111 and a vertical plate 1112 that are vertically connected to each other. The transverse plate 1111 is fixedly connected to the outer wall of the external fixing portion 11. When the positioning fixture is used, the transverse plate 1111 is supported on the pipe mouth of the cable guide tube 100, and the vertical plate 1112 is provided with a second threaded hole. The locking member 2 is a screw, which can be screwed into the second threaded hole and can abut against the outer wall of the cable guide tube 100, so that the positioning circular plate 1 is fixed to the cable guide tube 100 to prevent the positioning circular plate 1 from falling off. It should be noted that the screw only needs to abut against the outer wall of the cable guide tube 100, that is, when the positioning circular plate 1 does not fall off, the force of the screw abutting against the cable guide tube 100 is less than the elastic force of the elastic member 1212, so as to ensure that the position of the positioning circular plate 1 does not change. Furthermore, in order to prevent the screw from loosening, a nut can be matched on the screw to fix the position of the screw.

[0041] The positioning tool is positioned and installed by the adjusting component 121 and the locking member 2, that is, the adjusting component 121 performs center positioning, and the locking member 2 fixes the position of the positioning circular plate 1. When the prism is placed on the positioning hole 112 for positioning, the positioning circular plate 1 can provide bearing force through the locking member 2 and the adjusting component 121.

[0042] In this embodiment, the transverse plate 1111 of the locking portion 111 is connected to the outer fixing portion 11 by welding, and the connection is performed by welding technology, so the structural stability is stronger.

[0043] Optionally, four groups of adjustment components 121 are provided, and the four groups of adjustment components 121 are evenly distributed around the inner extending portion 12 , so that the structural design is more reasonable.

[0044] Optionally, four locking portions 111 are provided, and the four locking portions 111 are evenly distributed on the outer wall of the outer fixing portion 11 circumferentially, so that the fixation is more firm and more precise.

[0045] In this embodiment, the diameter of the positioning hole 112 can be set to 2 mm, and the depth can also be set to 2 mm.

[0046] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. Positioning tooling, characterized in that: include: A positioning circular plate (1) comprises an outer fixing portion (11) and an inner extending portion (12) whose axes coincide with each other, the outer wall of the outer fixing portion (11) being provided with a plurality of locking portions (111), the center of the outer fixing portion (11) being provided with a positioning hole (112), the inner extending portion (12) being provided with a plurality of adjustment components (121) uniformly arranged along the circumferential direction of the positioning circular plate (1), the adjustment component (121) comprising a movable rod (1211), the movable rod (1211) being adjustably connected to the inner extending portion (12), and the movable rod (1211) being used to abut against the inner wall of a cable guide tube (100) so that the axis of the positioning circular plate (1) coincides with the axis of the cable guide tube (100); A plurality of locking members (2) are arranged in one-to-one correspondence with the plurality of locking portions (111), and the locking members (2) are used to lock and fix the locking portions (111) and the cable guide tube (100).

2. The positioning tool according to claim 1, characterized in that: The outer wall of the inner extension portion (12) is provided with a plurality of first threaded holes corresponding one-to-one to the movable rods (1211), and the movable rods (1211) are threadedly connected to the first threaded holes.

3. The positioning tool according to claim 2, characterized in that: The end surface of the inner extending portion (12) facing away from the outer fixing portion (11) is provided with a mounting groove (122) corresponding one-to-one with the adjusting component (121), and the outer wall of the inner extending portion (12) is provided with a plurality of the first threaded holes corresponding one-to-one with and connected to the mounting groove (122). The adjusting component (121) further comprises an elastic member (1212), wherein the elastic member (1212) is arranged in the mounting groove (122), and the elastic member (1212) elastically abuts between the movable rod (1211) and the groove wall of the mounting groove (122).

4. The positioning tool according to claim 3, characterized in that: The adjustment assembly (121) further comprises a partition (1213), wherein the partition (1213) is slidably disposed in the installation groove (122) and is clamped between the movable rod (1211) and the elastic member (1212).

5. The positioning tool according to claim 4, characterized in that: A scale for measuring the position of the partition (1213) is provided on the edge of the installation groove (122), and the scale is extended along the adjustment direction of the movable rod (1211).

6. The positioning tool according to claim 3, characterized in that: The elastic member (1212) is a spring.

7. The positioning tool according to claim 1, characterized in that: The locking portion (111) comprises a transverse plate (1111) and a vertical plate (1112) which are vertically connected to each other; the transverse plate (1111) is fixedly connected to the outer wall of the external fixing portion (11), and the transverse plate (1111) can abut against the pipe mouth of the cable guide tube (100); the vertical plate (1112) is provided with a second threaded hole; the locking member (2) is a screw, which is screwed into the second threaded hole and can abut against the outer wall of the cable guide tube (100).

8. The positioning tool according to claim 1, characterized in that: The adjustment components (121) are provided in four groups.

9. The positioning tool according to claim 1, characterized in that: Four locking parts (111) are provided.

10. The positioning tool according to claim 1, characterized in that: The locking portion (111) is connected to the outer fixing portion (11) by welding.

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