Multifunctional measuring scale for acceptance inspection of electric power iron tower foundation

Abstract

The utility model discloses a multifunctional measuring scale for acceptance inspection of an electric power iron tower foundation, which comprises a foundation bolt root distance measuring scale, and the foundation bolt root distance measuring scale comprises a main scale and an auxiliary scale which are arranged in a cross shape; a first long groove is formed in the main ruler in the length direction, and the auxiliary ruler moves back and forth on the main ruler along the first long groove. A vernier is arranged on the main ruler, a mounting hole is formed in one end of the main ruler, and a vertical ruler is inserted into the mounting hole; the main ruler and the auxiliary ruler are fastened through a hollow bolt, a vertical connecting rod is inserted into the bolt, the bottom of the connecting rod is connected with a horizontal eccentric measuring ruler, and a second long groove is formed in the length direction of the eccentric measuring ruler. Measurement of acceptance data of the electric power iron tower foundation is realized through one set of measuring tool, the measuring method is simplified, field supervision personnel can carry out work conveniently, the working efficiency and the measuring accuracy are improved, and the measuring tool is practical, convenient and high in operability.

Description

Technical Field

[0001] The utility model relates to the field of measuring tools, in particular to a multifunctional measuring ruler for acceptance of power tower foundations. Background Art

[0002] The construction quality of the iron tower foundation of the power line project directly affects the subsequent tower erection, line stringing, equipment installation and other processes. In the construction of power transmission and transformation projects, a transmission line often involves the acceptance measurement of hundreds of foundations. Each foundation contains many acceptance items and involves many measuring tools, and the foundation acceptance work is arduous. At present, power engineering supervision often uses a variety of measuring tools such as steel tape measures, piano wires, theodolites, total stations, and tower rulers when accepting the iron tower foundation of power line projects. The above tools need to be carried by the supervisors, and the acceptance requires the assistance of multiple people. Different measuring tools are required for different acceptance items, such as: using steel tape measures to detect foundation exposed height, anchor bolt root opening size, foundation root opening size, using piano wire winding method to detect foundation eccentricity, and using theodolites and tower rulers to detect foundation height differences.

[0003] Although the various measuring tools currently available on the market can meet the requirements for the acceptance of the foundation of power line towers, the following problems still exist: (1) There are many types of measuring tools, which are inconvenient to carry. When measuring, it is necessary to take out the required measuring tools from the tool box where various measuring tools are stored, which is difficult. In addition, the friction between the measuring tools will cause wear and affect the measurement accuracy. (2) During the foundation acceptance, the supervisor needs to go up and down the foundation platform many times. The heavy load during the climbing process poses a great safety hazard. (3) The procurement cost of various measuring tools is high, which is not conducive to controlling the construction cost. Utility Model Content

[0004] The utility model provides a multifunctional measuring ruler for power tower foundation acceptance, aiming to measure the power tower foundation acceptance data through a set of measuring tools, so as to facilitate on-site supervisors to carry out acceptance work.

[0005] To achieve its purpose, the utility model adopts the following scheme:

[0006] A multifunctional measuring ruler for acceptance of power tower foundation comprises a foundation bolt root opening measuring ruler, the foundation bolt root opening measuring ruler comprises a main ruler and a sub-rule arranged in a cross along the horizontal direction; a first long groove is arranged in the length direction of the main ruler and the sub-rule can move back and forth on the main ruler along the first long groove; a vernier is arranged at one end of the main ruler and a mounting hole is arranged at the other end, and a vertical ruler is inserted in the mounting hole.

[0007] Preferably, the main scale and the secondary scale are fastened at their joints by bolts.

[0008] Preferably, the bolt is a hollow bolt.

[0009] Preferably, a connecting rod is inserted into the bolt, an eccentricity measuring ruler is horizontally arranged at the bottom of the connecting rod, and a second long groove is arranged in the length direction of the eccentricity measuring ruler.

[0010] Preferably, the main scale, the auxiliary scale, the vertical scale and the eccentric measuring scale are all provided with scales.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] 1. The multifunctional measuring ruler provided by the utility model realizes the measurement of the acceptance data of the power tower foundation through a set of measuring tools, simplifies the measurement method, facilitates the work of on-site supervisors, and effectively completes the one-time measurement of the root opening size of the anchor bolts, the exposed height of the anchor bolts, and the foundation eccentricity of a single foundation. At the same time, it cooperates with a high-precision laser rangefinder to realize the contactless measurement of the foundation root opening and the foundation height difference. It is practical, convenient and highly operable.

[0013] 2. The multifunctional measuring ruler provided by the utility model, firstly, when measuring the foundation eccentricity, a steel eccentricity measuring ruler is used to replace the piano wire, thereby avoiding the disadvantage of low measurement accuracy caused by the traditional piano wire winding method due to the influence of adverse factors such as piano wire elasticity, operation force, temperature and humidity, and realizing accurate measurement of foundation eccentricity. Secondly, when measuring the exposed height and root opening of a group of anchor bolts, a one-time measurement is performed using an anchor bolt root opening measuring ruler and a vertical ruler, which solves the problem of tolerance dispersion in multiple measurements. Finally, when measuring the foundation root opening and height difference, a high-precision laser rangefinder is used in conjunction with a vertical ruler for one-time measurement, which significantly improves work efficiency and measurement accuracy compared to the traditional method of using a steel tape measure and theodolite.

[0014] 3. Compared with the traditional measurement method, the multifunctional measuring ruler provided by the utility model reduces the frequency of supervisors going up and down the foundation platform, improves work efficiency and reduces safety risks and work intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of the multifunctional measuring ruler of the utility model;

[0016] In the figure: 1- anchor bolt root opening measuring ruler; 2- main ruler; 3- secondary ruler; 4- first long slot; 5- mounting hole; 6- vertical ruler; 7- bolt; 8- connecting rod; 9- eccentric measuring ruler; 10- second long slot; 11- anchor bolt; 12- vernier. DETAILED DESCRIPTION

[0017] The utility model is further described below in conjunction with the accompanying drawings:

[0018] like Figure 1As shown, the utility model is a multifunctional measuring ruler for acceptance of power tower foundation, including a foundation bolt root opening measuring ruler 1, the foundation bolt root opening measuring ruler 1 includes a main ruler 2 and a secondary ruler 3 arranged in a cross along the horizontal direction, the main ruler 2 is provided with a first long groove 4 in the length direction and the secondary ruler 3 can move back and forth on the main ruler 2 along the first long groove 4; a vernier 12 is provided at one end of the main ruler 2, and a mounting hole 5 is provided at the other end, and a vertical vertical ruler 6 is inserted in the mounting hole 5. The main ruler 2 and the secondary ruler 3 are fastened at the joint by a bolt 7, the bolt 7 is a hollow bolt, a vertical connecting rod 8 is inserted in the bolt 7, and a horizontally arranged eccentric measuring ruler 9 is connected to the bottom of the connecting rod 8, and the eccentric measuring ruler 9 is provided with a second long groove 10 in the length direction. The main ruler 2, the secondary ruler 3, the vertical ruler 6 and the eccentric measuring ruler 9 are all stainless steel structures, and the ruler body is engraved with scales by laser etching.

[0019] The foundation acceptance of power transmission and transformation projects is carried out in accordance with GB50233-2014 "110kV ~ 750kV overhead transmission line construction and acceptance specifications" to carry out supervision and acceptance work. Taking the M36 anchor bolt foundation as an example, the foundation root opening, foundation and foundation bolt eccentricity, foundation height difference, anchor bolt root opening and anchor bolt exposed height are measured. The measurement method is as follows:

[0020] (1) Measurement of exposed height and root opening of anchor bolts: Expand the main scale 2 and auxiliary scale 3 of the anchor bolt root opening measuring ruler 1 to 90° and tighten the bolt 7 to fix the anchor bolt root opening measuring ruler 1. Then insert the vertical scale 6 into the mounting hole 5. Place the anchor bolt root opening measuring ruler 1 on the top of a group of anchor bolts 11 and make the vertical scale 6 tangent to the outside of any anchor bolt 11. Move the cursor 12 on the main scale 2 from right to left until it is tangent to the outside of the anchor bolt 11 at the other diagonal angle. The dimension from the foundation plane to the top surface of the anchor bolt 11 read on the vertical scale 6 is the exposed height dimension of the anchor bolt. The measured dimension is 110mm, which meets the requirements and is accepted. The dimension from the 0 scale to the internal tangent of another anchor bolt read on the anchor bolt root opening measuring ruler 1 is the root opening dimension of the anchor bolt. The measured dimension is 240mm, which meets the requirements and is accepted.

[0021] (2) Eccentricity measurement between the foundation center and the anchor bolt center: Use a steel tape measure to measure the foundation center and mark it with a marker. Expand the main scale 2 and the auxiliary scale 3 of the anchor bolt root opening measuring scale 1 to 90 degrees. Insert the connecting rod 8 into the bolt 7 and install the eccentricity measuring scale 9 horizontally at the bottom of the connecting rod. Place the anchor bolt root opening measuring scale 1 on the top of a group of anchor bolts 11 and make the vertical scale 6 tangent to the outside of the anchor bolt 11. Move the cursor on the main scale 2 from right to left until it is tangent to the outside of another anchor bolt 11. Move the auxiliary scale 3 left and right until the center point of the auxiliary scale 3 coincides with the center point of the main scale 2. Then tighten the bolt 7 to fix the anchor bolt root opening measuring scale 1. Finally, rotate the connecting rod 8 to drive the eccentricity measuring scale 9 at the bottom to rotate until the foundation center marked by the marker coincides with the scale of the eccentricity measuring scale 9. Then read the eccentricity size. The measured size is 5mm, which meets the requirement of eccentricity size ≤8mm and is accepted.

[0022] (3) Foundation root opening and height difference measurement: Take the vertical ruler 6 out of the mounting hole 5, and install a high-precision laser distance meter in the mounting hole 5. Then place the vertical ruler 6 at another foundation anchor bolt 11 at the diagonal position of the laser distance meter, and make the vertical ruler 6 tangent to any outer wall of the anchor bolt 11. Turn on the laser distance meter, adjust the spot position until the spot points to the scale line of the vertical ruler 6, read the foundation root opening size from the laser distance meter, and the measured size is 3507mm. Then read the data from the foundation plane to the scale where the spot and the vertical ruler meet. Use this data to subtract the exposed height of the opposite foundation anchor bolt to get the foundation height difference size. The result after calculation is 0mm, indicating that the foundation height difference size meets the requirements and is qualified for acceptance.

Claims

1. A multifunctional measuring ruler for power tower foundation acceptance, characterized by: The invention comprises a foundation bolt root opening measuring ruler (1), wherein the foundation bolt root opening measuring ruler (1) comprises a main ruler (2) and a secondary ruler (3) arranged in a cross in a horizontal direction; the main ruler (2) is provided with a first long slot (4) in the length direction, and the secondary ruler (3) can move back and forth on the main ruler (2) along the first long slot (4); a cursor (12) is provided at one end of the main ruler (2), and a mounting hole (5) is provided at the other end, and a vertical ruler (6) is inserted into the mounting hole (5).

2. A multifunctional measuring ruler for power tower foundation acceptance as claimed in claim 1, characterized in that: The main scale (2) and the auxiliary scale (3) are fastened at their joints by bolts (7).

3. A multifunctional measuring ruler for power tower foundation acceptance as claimed in claim 2, characterized in that: The bolt (7) is a hollow bolt.

4. A multifunctional measuring ruler for power tower foundation acceptance as claimed in claim 3, characterized in that: A connecting rod (8) is inserted into the bolt (7), an eccentric measuring ruler (9) is horizontally arranged at the bottom of the connecting rod (8), and a second long groove (10) is arranged in the length direction of the eccentric measuring ruler (9).

5. A multifunctional measuring ruler for power tower foundation acceptance as claimed in claim 4, characterized in that: The main ruler (2), the auxiliary ruler (3), the vertical ruler (6) and the eccentric measuring ruler (9) are all provided with scales.

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