CN218723764U

CN218723764U - Measuring tool for measuring chord distance between pigeon tail type positioning ribs

Info

Publication number: CN218723764U
Application number: CN202223005552.0U
Authority: CN
Inventors: 何柄仪; 杨阳; 易健康; 郭建根; 曾鹏; 谢金江; 王朝伟; 秦鹏
Original assignee: Sinohydro Bureau 10 Co Ltd
Current assignee: Sinohydro Bureau 10 Co Ltd
Priority date: 2022-11-11
Filing date: 2022-11-11
Publication date: 2023-03-24
Anticipated expiration: 2032-11-11

Abstract

The utility model discloses a measuring tool for measuring the chord distance between the dove tail type positioning rib sections, which comprises a measuring rod, a sliding rod and a dial indicator; a measuring head of the dial indicator is used for tightly propping against a measuring point on the second positioning rib, and the first positioning rib and the second positioning rib are arranged adjacently; the center line of the measuring head in the length direction of the dial indicator is collinear with the center line of the measuring head in the length direction of the measuring rod. After the measuring tool is assembled and adjusted during the measurement of the first group of chord distances, the corresponding chord distance data can be obtained only by reading the relative difference with the first group of measurement data in the subsequent measurement of the chord distances; compared with the prior art, the measurement time of each group of data is shortened from original 5 minutes to 1 minute, the measurement process is simplified, the operation process is simple, the measurement speed is high, and the working efficiency is greatly improved. The utility model discloses processing into the V type to the first end of measuring staff, the measuring face of alignment dove tail type location muscle that can be quick to can prevent the displacement of measuring tool, guarantee measured data's accuracy.

Description

Measuring tool for measuring chord distance between pigeon tail type positioning ribs

Technical Field

The utility model relates to a measuring tool technical field, concretely relates to a measuring tool for measuring interval muscle chord distance of dove tail type location muscle.

Background

The stator core of the hydroelectric generating set usually adopts dove-tail type positioning ribs to fix the core punching sheets, the mounting precision of the positioning ribs is very high, the radius deviation generally requires 0.2mm, the verticality deviation is not more than 0.05mm, the centripetal degree deviation is not more than 0.05mm, and the absolute value deviation of each chord distance and the average value of the chord distances is not more than 0.15mm. The installation process of the positioning ribs comprises the following steps: installing reference positioning ribs, installing large equal-division positioning ribs and installing each positioning rib in a large equal-division interval; the installation of the reference positioning ribs adopts an inside micrometer to measure the radius, the hanging piano wire uses the inside micrometer to measure the verticality, and the central column is used to measure the centripetal degree; the large equal-division positioning ribs are installed, the radius and the centripetal degree are measured by adopting a central column, the chord distance between the large equal-division positioning ribs is measured by an inner micrometer, and the verticality is corrected by the chord distance; the installation of each positioning rib in a large equal division section adopts a central column to measure the radius and the concentricity, and an inside micrometer or a vernier caliper is used for measuring the chord distance and the verticality of the positioning rib in the section.

Because the measurable surface of the pigeon-tail positioning rib is very small, if the measurable surface is measured by an internal micrometer or a vernier caliper, a large amount of time is consumed for finding the measured surface, and the two measuring tools are time-consuming for adjusting the measuring tools and reading in the measuring process. The positioning ribs of one generator set are dozens to hundreds of ribs and need to be adjusted through continuous measurement in the installation process. The time spent in the measurement greatly prolongs the assembly period of the stator core.

Therefore, a measuring tool for measuring the chord distance between the dove-tail type positioning ribs needs to be developed to solve the above problems.

Disclosure of Invention

The utility model aims at solving the problem that a measuring tool for measuring the chord distance between the interval muscle of dove tail type location muscle is designed.

The utility model discloses a following technical scheme realizes above-mentioned purpose:

a measuring tool for measuring interval muscle chord distance of dove-tail type location muscle includes:

a measuring rod; a groove is formed at the first end of the measuring rod, and the first end of the measuring rod is tightly propped against the measuring point on the first positioning rib through the groove;

a slide bar; the second end of the measuring rod is connected with the first end of the sliding rod;

a dial indicator; the dial indicator is fixed on the second end of the sliding rod; a measuring head of the dial indicator is used for tightly propping against a measuring point on the second positioning rib, and the first positioning rib and the second positioning rib are arranged adjacently; the center line of the measuring head in the length direction of the dial indicator is collinear with the center line of the measuring head in the length direction of the measuring rod.

The measuring tool further comprises a slide bar clamp, the fixed end of the slide bar clamp is connected with the second end of the measuring bar, and the clamping end of the slide bar clamp is used for clamping the first end of the slide bar.

The measuring tool further comprises a dial indicator clamp, the fixed end of the dial indicator clamp is connected with the second end of the sliding rod, and the clamping end of the dial indicator clamp is used for clamping the dial indicator.

The groove of the first end of the measuring rod is a V-shaped groove.

The slide bar is arranged in parallel with the measuring rod and the measuring head of the dial indicator.

The beneficial effects of the utility model reside in that:

after the measuring tool is assembled and adjusted during the measurement of the first group of chord distances, the corresponding chord distance data can be obtained only by reading the relative difference with the first group of measurement data in the subsequent measurement of the chord distances; compared with the prior art, the measurement time of each group of data is shortened from original 5 minutes to 1 minute, the measurement process is simplified, the operation process is simple, the measurement speed is high, and the working efficiency is greatly improved.

The utility model discloses first end (measuring end) to the measuring staff is processed into the V type, can be quick look for the measuring face of dove tail type location muscle to can prevent the displacement of measuring tool, guarantee measured data's accuracy.

The utility model discloses a removal of slide bar is adjusted measuring tool's length and is needed in order to adapt to the measurement of present most hydroelectric set stator dove tail type location muscle chord distance.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is a schematic structural view of the dovetail-shaped positioning rib chord distance measurement device of the present invention;

FIG. 3 is a graph of measurement usage of the present invention;

reference numerals: 1-measuring rod, 2-slide rod clamp, 3-slide rod, 4-dial indicator clamp, 5-dial indicator and 6-positioning rib.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings in the embodiments of the present invention are combined below to clearly and completely describe the technical solutions in the embodiments of the present invention. It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "inner", "outer", "left", "right", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, or orientations or positional relationships that are conventionally placed when the products of the present invention are used, or orientations or positional relationships that are conventionally understood by those skilled in the art, and are merely for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element that is referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be further noted that, unless explicitly stated or limited otherwise, the terms "disposed" and "connected" are to be interpreted broadly, and for example, "connected" may be a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; the connection may be direct or indirect via an intermediate medium, and may be a communication between the two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The following describes in detail embodiments of the present invention with reference to the accompanying drawings.

As shown in fig. 1-2, a measuring tool for measuring the chord distance between the dovetail-shaped positioning ribs comprises:

a measuring bar 1; a V-shaped groove is formed at the first end of the measuring rod, and the first end of the measuring rod is tightly propped against the measuring point on the first positioning rib 6 through the V-shaped groove;

a slide bar 3;

a dial indicator 5; a measuring head of the dial indicator is used for tightly propping against a measuring point on the second positioning rib, and the first positioning rib and the second positioning rib are arranged adjacently; the center line of the measuring head in the length direction of the dial indicator is collinear with the center line of the measuring head in the length direction of the measuring rod.

A slide bar clamp 2; the fixed end of the slide bar clamp is connected with the second end of the measuring bar, and the clamping end of the slide bar clamp is used for clamping the first end of the slide bar. The clamping end of the slide bar clamp comprises a circular ring and an adjusting bolt, a screw hole is formed in the circular ring, the adjusting bolt is screwed into the screw hole in the circular ring and penetrates through the screw hole, then the adjusting bolt is abutted against a slide bar placed in the circular ring, and the slide bar clamp can be used for fixing the position of the slide bar. In some embodiments, the slide bar clamp 2; at least two groups are arranged, and the arrangement is used for ensuring that the sliding rod 3 is parallel to the measuring rod 1.

A dial indicator clamp 4; the fixed end of the dial indicator clamp is connected with the second end of the sliding rod, and the clamping end of the dial indicator clamp is used for clamping the dial indicator. And the dial indicator clamp is an annular clamp, and the clamping tightness can be considered to be adjusted.

As shown in fig. 3, the measuring steps of the present invention are as follows: (1) When the measurement is carried out, firstly, measuring the radius L1 (unit mm) of the 1 st group of chord distances by using an inner micrometer; (2) Adjusting a measuring tool, and ensuring that the central lines of measuring heads of a measuring rod 1 and a dial indicator 5 are collinear through the adjustment of a slide rod clamp 2 and a dial indicator clamp 4; (3) Propping the first end (measuring end) of the measuring rod against a left measuring point at the 1 st group of chord distance measuring positions, then unscrewing the slide rod clamp 2, moving the slide rod 3 to adjust the length of the measuring tool until the measuring head of the dial indicator props against the right measuring point and the measuring head of the dial indicator retracts to about 2mm, so that the pointer points to 2; (4) tightening the slide bar clamp 2; (5) rotating the zero point of the dial plate to the position of a large pointer; (6) Measuring the chord distances from the 2 nd group to the nth group, and recording the readings A2 and A3 & cng & An of the dial indicator; (7) The chord lengths (in mm) of group 2 to group n, L2= L1-A2+2, L3= L1-A3+2 · Ln = L1-An +2, are calculated from the chord lengths of group 1 and the dial gauge readings of group 2 to group n.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a measuring tool for measuring interval muscle chord distance of dove-tail type location muscle which characterized in that includes:

2. A measuring tool for measuring the tendon chord distance between dove-tail type positioning rib sections according to claim 1, characterized in that: the measuring tool further comprises a slide bar clamp, the fixed end of the slide bar clamp is connected with the second end of the measuring bar, and the clamping end of the slide bar clamp is used for clamping the first end of the slide bar.

3. A measuring tool for measuring the tendon chord distance between dove-tail type positioning rib sections according to claim 1, characterized in that: the measuring tool further comprises a dial indicator clamp, the fixed end of the dial indicator clamp is connected with the second end of the sliding rod, and the clamping end of the dial indicator clamp is used for clamping a dial indicator.

4. A measuring tool for measuring the tendon chord distance between dove-tail type positioning rib sections according to claim 1, characterized in that: the groove of the first end of the measuring rod is a V-shaped groove.

5. A measuring tool for measuring the tendon chord distance between dove-tail type positioning rib sections according to claim 1, characterized in that: the slide bar is arranged in parallel with the measuring rod and the measuring head of the dial indicator.