Tool for measuring circle center position of bridge steel structure anchor hole

Abstract

The utility model relates to the technical field of bridge steel structures, and provides a tool for measuring the circle center position of an anchor hole of a bridge steel structure, which comprises a mounting seat, a bracket, a prism, a first horizontal bubble and a second horizontal bubble, the mounting seat is of a rotational symmetric structure, a first end of the support is rotatably mounted in the center of the top surface of the mounting seat, and a second end of the support is connected with the prism; the first level bubble is mounted on the prism, and the second level bubble is mounted on the mounting seat; wherein the first horizontal bubble is used for ensuring the levelness of the prism, and the second horizontal bubble is used for ensuring the levelness of the mounting seat. According to the tool for measuring the center position of the bridge steel structure anchor hole, the center position of the anchor hole can be accurately and efficiently measured, the measuring efficiency and the measuring precision are improved, and compared with manual prism holding, the measuring convenience is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge steel structures, in particular to a tooling for measuring the center position of the anchor hole of a bridge steel structure. Background Art

[0002] The conventional anchorage at the bottom of the main tower of a large bridge is divided into two parts: steel box anchorage and steel pipe anchorage. The method of combining a bearing plate and an anchoring screw is adopted. A bearing plate is arranged at the bottom of the tower, and high-strength screws with a diameter are arranged around the perimeter of the steel box and steel pipe cross-sections. A pre-tension force is applied to the screws to keep the tower column cross-section in close contact with the supporting surface. There is a screw anchor beam structure in the bearing platform. The first section of the steel tower is the key control section, and it is also the installation section with the greatest difficulty and the highest precision requirement. In the construction of the first section, multiple anchor bolts are used to firmly anchor the concrete tower base and the steel-concrete main tower together to achieve their tight connection. The positioning accuracy of the first section is crucial for the installation control of subsequent sections. The accuracy of the anchor bolt installation and the steel tower manufacturing are the prerequisites for the precise installation of the first section of the tower body.

[0003] Currently, for the measurement of the center position of the anchor hole in the steel tower manufacturing, generally, the method of measuring the coordinates of three points on the edge of the anchor hole by a total station and then calculating the center coordinates of the anchor hole is adopted. This method requires measuring the coordinates of at least three points of the anchor hole, with low measurement efficiency. And when the anchor hole is not a standard circle due to manufacturing deviations, there will be certain errors, failing to meet the specification accuracy requirements. Summary of the Utility Model

[0004] The utility model provides a tooling for measuring the center position of the anchor hole of a bridge steel structure to solve the problems of low efficiency and low precision in the measurement process of the center of the anchor hole in the prior art.

[0005] The utility model provides a tooling for measuring the center position of the anchor hole of a bridge steel structure, including: a mounting base, a bracket, a prism, a first level bubble, and a second level bubble;

[0006] The mounting base is arranged in a rotationally symmetric structure. The first end of the bracket is rotatably mounted at the center of the top surface of the mounting base, and the second end of the bracket is connected to the prism;

[0007] The first level bubble is mounted on the prism, and the second level bubble is mounted on the mounting base;

[0008] Wherein, the first level bubble is used to ensure the level of the prism, and the second level bubble is used to ensure the level of the mounting base.

[0009] According to the tooling for measuring the center position of the anchor hole of a bridge steel structure provided by the utility model, the mounting base is a frustum of a cone.

[0010] A tool for measuring the center position of the anchor hole of a bridge steel structure according to the present utility model, the frustum is of a hollow structure;

[0011] The frustum includes an upper top surface, a lower bottom surface and a side surface, and the upper top surface, the lower bottom surface and the side surface are all metal parts.

[0012] A tool for measuring the center position of the anchor hole of a bridge steel structure according to the present utility model, the bracket is connected to the upper top surface through a rotary connector.

[0013] A tool for measuring the center position of the anchor hole of a bridge steel structure according to the present utility model, the upper top surface is recessed towards the lower bottom surface at the top of the side surface to form a recessed space at the top of the frustum;

[0014] The rotary connector is installed in the recessed space.

[0015] A tool for measuring the center position of the anchor hole of a bridge steel structure according to the present utility model, the upper top surface is obliquely connected to the top of the side surface.

[0016] A tool for measuring the center position of the anchor hole of a bridge steel structure according to the present utility model, the bracket includes a pipe fitting;

[0017] The length of the pipe fitting is adjustable so that the prism connected to the pipe fitting is within the visible range.

[0018] A tool for measuring the center position of the anchor hole of a bridge steel structure according to the present utility model, the prism has a mounting hole;

[0019] The pipe fitting includes a mounting section, and the mounting section is detachably mounted in the mounting hole.

[0020] A tool for measuring the center position of the anchor hole of a bridge steel structure according to the present utility model, the pipe fitting further includes a plurality of connecting sections;

[0021] At least two of the plurality of connecting sections have different lengths, and the plurality of connecting sections can be assembled together to realize the adjustment of different lengths of the pipe fitting.

[0022] A tool for measuring the center position of the anchor hole of a bridge steel structure according to the present utility model, the first level bubble and the second level bubble are metal base level bubbles.

[0023] The tooling for measuring the center position of the anchor hole of the bridge steel structure provided by the present utility model sets an installation base with a rotationally symmetric structure, rotatably sets the first end of the bracket at the center of the top surface of the installation base, installs the prism on the bracket, and uses the first level bubble to ensure the level of the prism and the second level bubble to ensure the level of the installation base. During the measurement of the anchor hole, the bracket can support the prism, and only by adjusting the levels of the installation base and the prism, the accurate and efficient measurement of the center position of the anchor hole can be achieved, improving the measurement efficiency and accuracy. Compared with manually holding the prism, the convenience of measurement is increased. Brief Description of the Drawings

[0024] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0025] Figure 1 It is a schematic structural diagram of the tooling for measuring the center position of the anchor hole of the bridge steel structure provided by the present utility model.

[0026] Reference Signs:

[0027] 1. Installation base; 11. Upper top surface; 12. Lower bottom surface; 13. Side surface;

[0028] 2. Bracket; 21. Installation section; 22. Connection section;

[0029] 3. Prism; 4. First level bubble; 5. Second level bubble; 6. Rotary connector. Detailed Description of the Embodiments

[0030] To make the objectives, technical solutions, and advantages of the present utility model clearer, the following will clearly and completely describe the technical solutions in the present utility model in conjunction with the drawings in the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts based on the embodiments in the present utility model fall within the scope of protection of the present utility model.

[0031] The following will be combined with Figure 1 , and through specific embodiments and their application scenarios, the tooling for measuring the center position of the anchor hole of the bridge steel structure provided by the embodiments of the present utility model will be described in detail.

[0032] In some embodiments, such as Figure 1As shown in the figure, this embodiment provides a tool for measuring the center position of the anchor hole of a bridge steel structure, including: a mounting base 1, a bracket 2, a prism 3, a first level bubble 4, and a second level bubble 5.

[0033] The mounting base 1 is set as a rotationally symmetric structure. The first end of the bracket 2 is rotatably mounted at the center of the top surface of the mounting base 1, and the second end of the bracket 2 is connected to the prism 3.

[0034] The first level bubble 4 is mounted on the prism 3, and the second level bubble 5 is mounted on the mounting base 1.

[0035] Among them, the first level bubble 4 is used to ensure the level of the prism 3, and the second level bubble 5 is used to ensure the level of the mounting base 1.

[0036] It can be understood that the mounting base 1 is a rotationally symmetric structure, and the rotationally symmetric structure has a rotation axis. During measurement, the rotation axis is made to coincide with the center of the anchor hole, and the position of the center of the anchor hole can be obtained by measuring the position of the rotation axis.

[0037] Specifically, the mounting base 1 can be a rotational hyperboloid, a rotational paraboloid, or a cone.

[0038] The bracket 2 is used to provide a mounting support for the prism 3. Using the bracket 2 to mount the prism 3 can eliminate the workload of the operator for manually mounting and holding the prism 3. To ensure the coincidence of the rotation axis and the center of the anchor hole, the prism 3 is adjusted to be level through the first level bubble 4, and the top surface of the mounting base 1 is adjusted to be level through the second level bubble 5. Since the anchor holes are all parallel to the ground, keeping the top surface of the mounting base 1 level can ensure that the center of the top surface of the mounting base 1 coincides with the center of the anchor hole, and keeping the prism 3 level can ensure that the projection of the prism 3 on the top surface of the mounting base 1 coincides with the center of the top surface of the mounting base 1. Then, the coordinates of the prism 3 on the horizontal plane can be used to represent the position of the center of the anchor hole.

[0039] Correspondingly, in this embodiment, through the rotational connection between the bracket 2 and the mounting base 1, when the prism 3 is not level, the angle of the prism 3 relative to the mounting base 1 is finely adjusted so that the prism 3 is finally level, and the projection of the prism 3 on the top surface of the mounting base 1 is located at the center of the top surface of the mounting base 1.

[0040] Specifically, the bracket 2 and the mounting base 1 can be rotationally connected through a ball joint or a universal joint.

[0041] In practical applications, when measuring the center position of the anchor hole, the mounting base 1 is placed into the anchor hole, the second level bubble 5 is adjusted to make the mounting base 1 level, then, the bracket 2 is installed at the center of the top surface of the mounting base 1, the prism 3 is installed on the bracket 2, and the first level bubble 4 is adjusted to make the prism 3 level. Finally, the coordinates of the prism 3 are measured using the total station three-dimensional coordinate method, and thus the position of the center of the anchor hole is obtained.

[0042] The tooling for measuring the center position of the anchor hole of the bridge steel structure provided by the present utility model, by setting the mounting base 1 with a rotationally symmetric structure, rotatably arranging the first end of the bracket 2 at the center of the top surface of the mounting base 1, installing the prism 3 on the bracket 2, and using the first level bubble 4 to ensure the level of the prism 3 and the second level bubble 5 to ensure the level of the mounting base 1, enables the bracket 2 to support the prism 3 during the measurement of the anchor hole. Only by adjusting the levels of the mounting base 1 and the prism 3 can the accurate and efficient measurement of the center position of the anchor hole be achieved, improving the measurement efficiency and accuracy. Compared with manually holding the prism 3, the convenience of measurement is increased.

[0043] In some embodiments, as Figure 1 shown, the mounting base 1 of this embodiment is a frustum of a cone.

[0044] It can be understood that the frustum of a cone has a rotationally symmetric structure and regular structure, which is easy to process and manufacture, reducing the construction cost and improving the construction convenience.

[0045] Furthermore, since the cross-sectional radii of the frustum of a cone are different, for anchor holes with different diameters, only by ensuring that the minimum diameter of the frustum of a cone is smaller than the diameter of the anchor hole and the maximum diameter of the frustum of a cone is larger than the diameter of the anchor hole, the frustum of a cone can be placed into the anchor hole without falling into it, so that the measurement of the center position of the anchor hole can be carried out. For different types of anchor holes at the same construction site, the measurement can be achieved using a frustum of a cone of one specification, improving the universality of the tooling and saving the manufacturing cost. When measuring anchor holes of different sizes, there is no need to replace different frustums of a cone, increasing the convenience of the measurement work.

[0046] In an example, the diameter of the upper top surface 11 of the frustum of a cone is 0.25 m, the diameter of the lower bottom surface 12 of the frustum of a cone is 0.12 m, and the height of the frustum of a cone is 0.3 m.

[0047] In some embodiments, as Figure 1 shown, the frustum of a cone of this embodiment has a hollow structure.

[0048] The frustum of a cone includes an upper top surface 11, a lower bottom surface 12 and a side surface 13, and the upper top surface 11, the lower bottom surface 12 and the side surface 13 are all metal parts.

[0049] It is understandable that in order to reduce the weight of the mounting base 1, the frustum in this embodiment is hollow. A metal plate is wound to form the side surface 13, and the upper top surface 11 and the lower bottom surface 12 are also pressed from metal plates. The upper top surface 11, the lower bottom surface 12 and the side surface 13 are welded to form a hollow frustum. The hollow frustum structure in this embodiment can reduce the manual physical consumption during the handling of the mounting base 1, save the production materials, and reduce the construction cost.

[0050] In one example, the frustum is made of a steel plate with a thickness of 3 mm.

[0051] In some embodiments, as Figure 1 shown, the bracket 2 in this embodiment is connected to the upper top surface 11 through a rotary connector 6.

[0052] It is understandable that the rotary connector 6 can realize the relative rotation of the bracket 2 and the upper top surface 11 of the frustum, and has a small volume and occupies a small space, and can also realize the flexible angle adjustment of the bracket 2 and the upper top surface 11.

[0053] In some embodiments, as Figure 1 shown, the upper top surface 11 of this embodiment is recessed toward the lower bottom surface 12 at the top of the side surface 13 to form a recessed space at the top of the frustum.

[0054] The rotary connector 6 is installed in the recessed space.

[0055] It is understandable that the setting of the recessed space facilitates the placement of the rotary connector 6 to prevent the rotary connector 6 from being easily knocked and damaged when it is directly located outside the mounting base 1. Moreover, the recessed space also facilitates the operator to hold the mounting base 1.

[0056] In some embodiments, as Figure 1 shown, the upper top surface 11 of this embodiment is inclinedly connected to the top of the side surface 13.

[0057] It is understandable that the inclined connection between the upper top surface 11 and the top of the side surface 13 can ensure a smooth transition between the side surface 13 and the upper top surface 11. Compared with the vertical connection between the upper top surface 11 and the side surface 13, the inclined surface can make the connection stress evenly distributed without stress concentration, and the inclined connection makes the appearance of the top of the mounting base 1 more beautiful.

[0058] In some embodiments, as Figure 1 shown, the bracket 2 in this embodiment includes a pipe fitting.

[0059] The length of the pipe fitting is adjustable so that the prism 3 connected to the pipe fitting is within the visible range.

[0060] It is understandable that at the measurement site, the steel structure will block the line of sight of the prism 3. In order to enable the support 2 to extend beyond the obstruction, the length of the support 2 needs to be extended. The length of the pipe fitting in this embodiment is adjustable and can be adjusted according to the actual situation to make the prism 3 in a position convenient for collection, so as to avoid the situation where the prism 3 is blocked and the measurement is missed, ensuring the accuracy of the measurement.

[0061] Specifically, the pipe fitting can use a telescopic rod to achieve length adjustment, or can use the cooperation of a slide rail and a slider to achieve length adjustment.

[0062] In some embodiments, the prism 3 of this embodiment has a mounting hole.

[0063] The pipe fitting includes a mounting section 21, and the mounting section 21 is detachably mounted in the mounting hole.

[0064] It is understandable that the mounting section 21 is located at one end of the pipe fitting away from the mounting member, and the mounting section 21 is detachably connected to the prism 3, which is convenient for the installation and disassembly of the prism 3 and improves the convenience of using the prism 3. Further, bolts can be installed on the mounting section 21, the mounting hole is set as a threaded hole, and the screw of the bolt is screwed into the mounting hole of the prism 3, so as to realize the quick installation of the mounting section 21 and the prism 3.

[0065] In some embodiments, as Figure 1 shown, the pipe fitting of this embodiment further includes a plurality of connecting sections 22.

[0066] At least two of the plurality of connecting sections 22 have different lengths, and the plurality of connecting sections 22 can be combined and installed to realize the adjustment of different lengths of the pipe fitting.

[0067] It is understandable that the plurality of connecting sections 22 can be connected end to end in sequence to form different lengths. In practical applications, carry a plurality of connecting sections 22, determine the number and specifications of the required connecting sections 22 according to the actual needs on site, and combine and install them into the required length, so as to adapt to the anchor holes under different installation conditions, increasing the application range of anchor hole measurement and having universality.

[0068] Specifically, one end of each connecting section 22 of this embodiment is provided with a screw rod, and the other end is provided with a through hole. When two connecting sections 22 are connected, the screw rod is inserted into the through hole and the screw rod is fixed with a nut, so as to realize the installation and fixation of the two connecting sections 22.

[0069] In some embodiments, the first horizontal bubble 4 and the second horizontal bubble 5 of this embodiment are metal base level bubbles.

[0070] It is understandable that the first horizontal bubble 4 and the second horizontal bubble 5 use metal base level bubbles, which can be directly welded to the metal connecting part, thereby improving higher durability and stability.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tool for measuring the center position of an anchor hole in a bridge steel structure, characterized in that: include: A mounting base, a bracket, a prism, a first level bubble and a second level bubble; The mounting seat is configured as a rotationally symmetrical structure, the first end of the bracket is rotatably mounted on the center of the top surface of the mounting seat, and the second end of the bracket is connected to the prism; The first horizontal bubble is mounted on the prism, and the second horizontal bubble is mounted on the mounting seat; The first level bubble is used to ensure the level of the prism, and the second level bubble is used to ensure the level of the mounting seat.

2. The tool for measuring the center position of the anchor hole of a bridge steel structure according to claim 1 is characterized in that: The mounting seat is a truncated cone.

3. The tool for measuring the center position of the anchor hole of a bridge steel structure according to claim 2 is characterized in that: The truncated cone body is a hollow structure; The truncated cone body comprises an upper top surface, a lower bottom surface and side surfaces, and the upper top surface, the lower bottom surface and the side surfaces are all metal parts.

4. The tool for measuring the center position of the anchor hole of a bridge steel structure according to claim 3 is characterized in that: The bracket is connected to the upper top surface via a rotating connector.

5. The tool for measuring the center position of the anchor hole of a bridge steel structure according to claim 4 is characterized in that: The upper top surface is concavely arranged at the top end of the side surface toward the lower bottom surface, so as to form a concave space at the top end of the truncated cone body; The rotary connector is installed in the recessed space.

6. The tool for measuring the center position of the anchor hole of a bridge steel structure according to claim 4 is characterized in that: The upper top surface is connected to the top end of the side surface in an inclined manner.

7. The tool for measuring the center position of the anchor hole of a bridge steel structure according to claim 1 is characterized in that: The support comprises a pipe; The length of the tube can be adjusted so that the prism connected to the tube is within the visible range.

8. The tool for measuring the center position of the anchor hole of a bridge steel structure according to claim 7 is characterized in that: The prism has a mounting hole; The pipe member includes a mounting segment, and the mounting segment is detachably mounted in the mounting hole.

9. The tool for measuring the center position of the anchor hole of a bridge steel structure according to claim 8, characterized in that: The pipe fitting also includes a plurality of connecting sections; At least two of the plurality of connecting sections have different lengths, and the plurality of connecting sections can be installed in combination to achieve adjustment of different lengths of the pipe.

10. The tool for measuring the center position of the anchor hole of a bridge steel structure according to claim 1, characterized in that: The first level bubble and the second level bubble are metal base level bubbles.

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