High-precision perpendicularity measuring instrument for bolt box

Abstract

The utility model relates to the technical field of large equipment installation, in particular to a bolt box high-precision perpendicularity measuring instrument which comprises a positioning tile, one side of the positioning tile is attached to the side wall of a bolt box pipe fitting so as to be parallel to the axis of a bolt box, and a horizontal rod is welded to the other side of the positioning tile and is perpendicular to the axis of the bolt box. A vertical vacuum cylinder is arranged at the outer suspension end of the horizontal rod, mineral oil is filled in the vacuum cylinder, and bubbles are reserved in the vacuum cylinder; during use, the positioning tile is buckled on one side of the upper end of the bolt box pipe fitting, whether bubbles in the vacuum cylinder are located in the center or not is observed, if the bubbles are not located in the center, it is indicated that the bottom of the pipe fitting is inaccurate in positioning, and the position of the bottom of the bolt box is adjusted until the bubbles are located in the center of the vacuum cylinder; the perpendicularity of the bolt box pipe fitting can be quickly detected, the pre-embedding quality is ensured, the structure is simple, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of large-scale equipment installation, in particular to a high-precision verticality measuring instrument for a bolt box. Background Art

[0002] With the development of society, steel mills have been developing towards automated production in recent years, and the precision of machinery has become higher and higher. At the same time, the precision of mechanical installation has also been continuously improved. In order to ensure the accuracy of some bolts, bolt boxes are pre-embedded. In this context, the premise of improving the installation accuracy of mechanical bolts is how to improve the pre-embedded accuracy of bolt boxes.

[0003] Since the pipe fittings on the upper part of the bolt box are long, the upper part protrudes out of the foundation steel mesh during pre-embedding, so accurate positioning is relatively easy. However, the lower part is in the foundation steel mesh. Once the positioning is inaccurate, the round pipe fittings will tilt, and it will be difficult to adjust after subsequent pouring, which will cause trouble for the subsequent bolt embedding and equipment installation. Therefore, a high-precision verticality measuring instrument for bolt boxes is proposed. Utility Model Content

[0004] The utility model aims to solve the above problem, thereby providing a high-precision verticality measuring instrument for a bolt box.

[0005] The utility model solves the above problems and adopts the following technical solutions:

[0006] A high-precision verticality measuring instrument for a bolt box, the bolt box comprising a pipe fitting, the lower end of which falls on a foundation bottom plate, and the upper end protrudes from a foundation steel mesh, the verticality measuring instrument comprising a positioning shoe, one side of the positioning shoe being attached to a side wall of the bolt box pipe fitting so as to be parallel to the axis of the bolt box pipe fitting, a horizontal rod being welded to the other side of the positioning shoe, the horizontal rod being perpendicular to the axis of the bolt box pipe fitting, an upright vacuum cylinder being arranged at the outer hanging end of the horizontal rod, the vacuum cylinder being filled with mineral oil and retaining bubbles.

[0007] Compared with the prior art, the utility model adopting the above technical solution has the following outstanding features:

[0008] When the utility model is used, the positioning tile is arranged on one side of the upper end of the bolt box pipe fitting, and it is observed whether the bubble in the vacuum cylinder is in the center. If the bubble is not in the center, it means that the bottom of the pipe fitting is not accurately positioned. The position of the bottom of the bolt box is adjusted until the bubble is in the center of the vacuum cylinder. The verticality of the bolt box pipe fitting can be quickly detected to ensure the pre-embedded quality, and the structure is simple and easy to use.

[0009] As a preferred embodiment, a further technical solution of the utility model is:

[0010] The positioning tile is an arc-shaped tile with the same radius as the bolt box pipe fitting, its inner arc surface fits with the bolt box, and the horizontal rod is welded in the middle of the outer arc surface; it is suitable for use in the bolt box of round pipe fittings.

[0011] The positioning tile is an angle steel, and the outer edges of its two angle plates fit with the bolt box fittings; it is suitable for use in the bolt boxes of round tube fittings and the bolt boxes of polygonal fittings.

[0012] A plurality of horizontally placed small vacuum cylinders are evenly distributed on the outer circumference of the vacuum cylinder. The small vacuum cylinders are filled with mineral oil and have bubbles, thereby improving the measurement accuracy.

[0013] A center mark is set on the top of the vacuum cylinder; scale marks are set along the axial direction of the small vacuum cylinder to facilitate observation and judgment of the bubble position.

[0014] The upper and lower ends of the positioning shoe are provided with clamps, which are detachably connected to the bolt box pipe fittings; it is convenient to fix with the bolt box and improve the measurement stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the top view of the structure of the first embodiment of the utility model when in use;

[0016] Figure 2 It is a side view schematic diagram of the structure of the embodiment of the utility model when in use;

[0017] Figure 3 This is a schematic diagram of the top view of the structure of the second embodiment of the utility model when in use;

[0018] Marked in the figure are: positioning tile 1, horizontal rod 2, vacuum cylinder 3, bubble 4, small vacuum cylinder 5, bolt box 6, basic steel mesh 7, hoop 8. DETAILED DESCRIPTION

[0019] The present invention is further described below in conjunction with embodiments, the purpose of which is only to provide a better understanding of the content of the present invention. Therefore, the examples given do not limit the protection scope of the present invention.

[0020] See also Figure 1-Figure 2 A high-precision verticality measuring instrument for a bolt box, wherein the bolt box 6 includes a pipe fitting, the lower end of which is placed on the foundation bottom plate, and the upper end protrudes from the foundation steel mesh 7. The verticality measuring instrument includes a positioning tile 1, one side of the positioning tile 1 is attached to the side wall of the bolt box 6 pipe fitting, so as to be parallel to the axis of the bolt box 6 pipe fitting, and a horizontal rod 2 is welded to the other side of the positioning tile 1, and the horizontal rod 2 is perpendicular to the axis of the bolt box 6 pipe fitting. A vertical vacuum cylinder 3 is arranged at the outer hanging end of the horizontal rod 2, and the vacuum cylinder 3 is filled with mineral oil and has bubbles 4.

[0021] The positioning tile 1 is an arc-shaped tile with the same radius as the bolt box 6 pipe fitting, its inner arc surface fits with the bolt box 6, and the horizontal rod is welded in the middle of the outer arc surface; it is suitable for use in the bolt box of round pipe fittings.

[0022] The positioning tile 1 is an angle steel, and the outer edges of its two angle plates are fitted with the bolt box 6 pipe fittings; it is suitable for use with the bolt box of round pipe fittings and the bolt box of polygonal pipe fittings.

[0023] A plurality of horizontally placed small vacuum cylinders 5 are evenly distributed on the outer circumference of the vacuum cylinder 3. The small vacuum cylinders 5 are filled with mineral oil and have air bubbles 4 therein, so as to improve the measurement accuracy.

[0024] A center mark is provided on the top of the vacuum cylinder 3; and scale marks are provided along the axial direction of the small vacuum cylinder 5, so as to facilitate observation and judgment of the bubble position.

[0025] The upper and lower ends of the positioning shoe 1 are provided with clamps 8, and the clamps 8 are detachably connected to the bolt box 6 pipe fittings, so as to facilitate fixation with the bolt box 6 and improve measurement stability.

[0026] When in use, the detection work can be easily completed on the basic steel mesh 7. The utility model converts the vertical offset of the bolt box 6 into the horizontal tilt for detection, which is convenient to use.

[0027] Embodiment 1: Suitable for bolt boxes of round tube fittings, the positioning tile 1 is an arc-shaped tile with the same radius as the round tube of the bolt box 6, and its inner arc surface fits with the bolt box 6. After fitting, it is detachably connected to the bolt box 6 pipe fitting through the clamp 8, and observe whether the bubble in the vacuum cylinder 3 is in the center. If the bubble is not in the center, it means that the bottom of the pipe fitting is not positioned accurately. The position of the bottom of the bolt box is adjusted until the bubble is in the center of the vacuum cylinder. At the same time, combined with the position of the bubble in the small vacuum cylinder 5, it is judged whether the small vacuum cylinder 5 is horizontal, and finally it is judged whether the round tube of the bolt box 6 is vertical, thereby improving the measurement accuracy.

[0028] Embodiment 2: Suitable for use with bolt boxes for round tubes and polygonal tubes; the positioning tile 1 is an angle steel, which is used to fit the outer wall of the bolt box of the polygonal tube, and the side plates of the angle steel fit the side of the square tube, and the angle of the angle steel is pressed against the corner edge of the polygonal tube, thereby ensuring that it is parallel to the axis of the polygonal tube; when the angle steel is used for round tubes, the outer edges of the two side plates are tightly attached to the wall of the round tube, thereby ensuring that the corner edge direction of the steel angle is parallel to the axis of the round tube; after fitting, it is detachably connected to the bolt box 6 tube through the clamp 8, and observe whether the bubble in the vacuum cylinder 3 is in the center. If the bubble is not in the center, it means that the bottom of the tube is not accurately positioned. The bottom of the bolt box is adjusted until the bubble is in the center of the vacuum cylinder. At the same time, combined with the position of the bubble in the small vacuum cylinder 5, it is judged whether the small vacuum cylinder 5 is horizontal, and finally it is judged whether the bolt box 6 tube is vertical, thereby improving the measurement accuracy.

[0029] When the utility model is used, the positioning tile is arranged on one side of the upper end of the bolt box pipe fitting, and it is observed whether the bubble in the vacuum cylinder is in the center. If the bubble is not in the center, it means that the bottom of the pipe fitting is not accurately positioned. The position of the bottom of the bolt box is adjusted until the bubble is in the center of the vacuum cylinder. The verticality of the bolt box pipe fitting can be quickly detected to ensure the pre-embedded quality, and the structure is simple and easy to use.

[0030] The above description is only a preferred feasible embodiment of the present utility model, and does not limit the scope of rights of the present utility model. All equivalent changes made using the contents of the present utility model specification and its drawings are included in the scope of rights of the present utility model.

Claims

1. A high-precision verticality measuring instrument for a bolt box, the bolt box comprising a pipe fitting, the lower end of which falls on the foundation bottom plate, and the upper end protrudes from the foundation steel mesh, characterized in that: The verticality measuring instrument includes a positioning shoe, one side of which is attached to the side wall of the bolt box pipe fitting so as to be parallel to the axis of the bolt box pipe fitting. A horizontal rod is welded to the other side of the positioning shoe, and the horizontal rod is perpendicular to the axis of the bolt box pipe fitting. A vertical vacuum cylinder is arranged at the outer hanging end of the horizontal rod, and the vacuum cylinder is filled with mineral oil and has bubbles.

2. A bolt box high-precision verticality measuring instrument according to claim 1, characterized in that: The positioning tile is an arc-shaped tile with the same radius as the bolt box pipe fitting, the inner arc surface of which fits the bolt box, and the horizontal rod is welded in the middle of the outer arc surface.

3. The bolt box high-precision verticality measuring instrument according to claim 1 is characterized in that: The positioning tile is an angle steel, and the outer edges of its two angle plates fit the bolt box pipe fittings.

4. A bolt box high-precision verticality measuring instrument according to claim 1, characterized in that: A plurality of horizontally placed small vacuum cylinders are evenly distributed on the outer circumference of the vacuum cylinder. The small vacuum cylinders are filled with mineral oil and have air bubbles.

5. A bolt box high-precision verticality measuring instrument according to claim 4, characterized in that: The top of the vacuum cylinder is provided with a center point mark; the small vacuum cylinder is provided with scale marks along the axial direction.

6. The bolt box high-precision verticality measuring instrument according to claim 1 is characterized in that: The upper and lower ends of the positioning tile are provided with clamps, which are detachably connected with bolts and pipe fittings.

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