Tool for measuring installation perpendicularity of long-column-shaped part

Abstract

The utility model provides a tool for measuring the installation verticality of a long cylindrical part, which comprises a laser tracker, the laser tracker is arranged in the middle of a measuring auxiliary tool platform, and one end of the measuring auxiliary tool platform is provided with a laser horizontal pay-off instrument. According to the utility model, the verticality measurement efficiency of the lifting rod can be greatly improved, the manual measurement error is reduced, and the device has a certain use value.

Description

Technical Field

[0001] The utility model relates to the technical field of parts measurement, in particular to a tool for measuring the installation verticality of long columnar parts. Background Art

[0002] When a hydropower station was overhauling a cylinder valve, it was necessary to replace the six lifting rods installed above the cylinder valve. The lifting rods had strict installation accuracy requirements on the cylinder valves. Usually, the axis of the lifting rods was required to be in a vertical state, and the verticality requirement with respect to the horizontal direction was 0.02mm / m. The verticality measurement of the lifting rods used a piano wire hanging weight as a vertical reference object, and the deviation of the lifting rods from the vertical direction was obtained by measuring the distance between the fixed point of the rod body and the piano wire. This method has the following problems:

[0003] 1. The piano wire used to suspend the weight has a large error as a vertical reference: When the piano wire is suspended, it will continue to swing due to environmental vibrations, airflow and other factors, which makes it have a large error as a reference object;

[0004] 2. There is an error in measuring the distance between the rod and the piano wire using an inside micrometer: When using a micrometer to measure the distance between the rod and the piano wire, it is necessary to find the minimum degree when the two ends of the inside micrometer are in contact with the rod and the piano wire respectively. Since the rod is a curved surface and the piano wire is very thin, the measurement is very difficult and there is a large error.

[0005] Therefore, there is an urgent need for a tool for measuring the installation verticality of long columnar parts to solve the above problems. Summary of the invention

[0006] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a tool for measuring the installation verticality of a long columnar part to solve the problems raised in the background technology.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions: a tool for measuring the installation verticality of long columnar parts, comprising a laser tracker, wherein the laser tracker is arranged in the middle of a measuring auxiliary tool platform, and a laser horizontal line-laying instrument is arranged at one end of the measuring auxiliary tool platform.

[0008] Preferably, the measurement auxiliary tool comprises a platform and an adjustment bracket, the cross section of the platform is an I-shaped cross section, and four adjustment brackets are arranged on the lower surface of the platform.

[0009] Preferably, the adjustment bracket is a bolt height adjustment structure.

[0010] The utility model has the following beneficial effects:

[0011] 1. The utility model has a simple structure, high measurement accuracy, strong operability, avoids human reading errors, and can form a standardized measurement scheme;

[0012] 2. The utility model avoids using a piano wire for hanging a weight as a vertical reference, thereby reducing the error caused by the reference object. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a schematic diagram of the working scene of the utility model. DETAILED DESCRIPTION

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0016] See also Figure 1 and Figure 2 A tool for measuring the installation verticality of long columnar parts includes a laser tracker 1, which is arranged in the middle of a measurement auxiliary tool 2 platform, and a laser horizontal line-laying instrument 3 is arranged at one end of the measurement auxiliary tool 2 platform.

[0017] Preferably, the measurement auxiliary tool 2 comprises a platform 2.1 and an adjustment bracket 2.2. The cross section of the platform 2.1 is an I-shaped cross section, and four adjustment brackets 2.2 are arranged on the lower surface of the platform 2.1.

[0018] Preferably, the adjusting bracket 2.2 is a bolt height adjusting structure.

[0019] The working principle of this embodiment is as follows:

[0020] Place the measuring auxiliary tool on the ground perpendicular to the lifting rod and close to the lifting rod, place a coincidence level on the front of the I-beam, and rotate the nut on the back of the tool to adjust the bracket height so that the I-beam is in a horizontal state; place a laser horizontal line-laying instrument on the front of the I-beam to mark the axial line on the surface of the lifting rod, and specify two measuring points on the surface of the lifting rod and mark them; specify three measuring points on the front of the I-beam and mark them; place a laser tracker on one side of the measuring auxiliary tool and the lifting rod so that the laser of the tracker can hit the above five measuring points; use the laser tracker to first measure the three measuring points on the front of the I-beam, and use the three points to fit a plane, and use this plane as a reference for the absolute horizontal plane; use the laser tracker to measure the two measuring points on the surface of the lifting rod, and fit a straight line, which represents the axial direction of the lifting rod. The accurate verticality of the lifting rod can be obtained by analyzing the angle between the straight line and the above plane.

[0021] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A tool for measuring the verticality of a long columnar part, comprising a laser tracker (1), characterized in that: The laser tracker (1) is arranged in the middle of the measurement auxiliary tool (2) platform, and a laser horizontal line setting instrument (3) is arranged on one end of the measurement auxiliary tool (2) platform.

2. A tool for measuring the verticality of a long columnar part according to claim 1, characterized in that: The measurement auxiliary tool (2) comprises a platform (2.1) and an adjustment bracket (2.2); the cross section of the platform (2.1) is an I-shaped cross section; and four adjustment brackets (2.2) are arranged on the lower surface of the platform (2.1).

3. A tool for measuring the verticality of a long columnar part according to claim 2, characterized in that: The adjusting bracket (2.2) is a bolt height adjusting structure.

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