CN202216652U

CN202216652U - Measuring tool arranged in large turboset and used for measuring eccentric pin hole

Info

Publication number: CN202216652U
Application number: CN2011203791124U
Authority: CN
Inventors: 郑恩福; 李凤庆; 梁伟; 刘鑫宇; 李国辉; 王志军; 戴清华; 高岩
Original assignee: Harbin Turbine Co Ltd
Current assignee: Harbin Turbine Co Ltd
Priority date: 2011-09-30
Filing date: 2011-09-30
Publication date: 2012-05-09
Anticipated expiration: 2021-09-30

Abstract

A measuring tool arranged in a large turboset and used for measuring an eccentric pin hole relates to a measuring tool for measuring an eccentric pin, solving the problems in the current measuring tools for measuring the eccentric value of the eccentric pin that the measuring error is large, the operation is complex, a large quantity of process pins are needed to be made, the working efficiency is low and the measuring precision is not accurate. A dial indicator installation rod is detachably connected with the vertical section of an L-shaped support frame, the horizontal section of the L-shaped support frame is detachably connected with the upper end surface of a guide pillar, the lower end surface of the guide pillar is fixedly connected with a base, the guide pillar and the base are arranged coaxially, a plurality of through holes used for installing rotating rods are uniformly distributed in the guide pillar, two U-shaped slots are symmetrically arranged on the base along the central axis, an opening of each U-shaped slot faces the outside, each fixing shaft is arranged in the corresponding U-shaped slot and is adjustably connected with a corresponding U-shaped slot, and two ends of each fixing shaft are respectively connected with a bearing. The measuring tool is used for measuring the eccentric value before the eccentric pin is installed on a large turboset.

Description

The measurer of measuring eccentric pin-and-hole in the Large Steam Turbine Sets is installed

Technical field

The utility model relates to a kind of measurer of measuring eccentric pin-and-hole.

Background technology

Many dowel holes are eccentric structure in the Large Steam Turbine Sets installation process, need measure the eccentricity value of eccentric orfice, so that make eccentric pin according to the size of eccentric orfice and the eccentricity value that records.

The way of surveying the eccentricity value of eccentric pin-and-hole at present in the assembling is to make a technology pin that matees with an eccentric pin hole dimension; And connect a dial framework that has spiral pin through the spiral pin hole at an end of technology pin; A clock gauge is housed on the dial framework; The technology pin is put in the eccentric pin-and-hole of coupling, drives the eccentricity value that clock gauge records eccentric pin through rotating one week of technology pin, and make eccentric pin according to the eccentricity value of measuring.Because the eccentric pin-and-hole of turbine body with multiple size need be done technology pin a lot of and eccentric pin hole dimension coupling like this, do very loaded down with trivial detailsly, time-consuming, and the technology pin rotates dumbly, precision is difficult for assurance during measurement, influences fit quality.And many units are on-the-spot to be installed, measures, and the many processing of technology pin, transportation bring a lot of difficulties.

The utility model content

The purpose of the utility model provides a kind of measurer of measuring eccentric pin-and-hole in the Large Steam Turbine Sets of installing; Measuring error is big when solving the eccentricity value of the eccentric pin-and-hole of present measurement; Complex operation need be made a large amount of technology pins, the inaccurate problem of inefficiency and measuring accuracy.

The utility model is to solve the problems of the technologies described above the technical scheme of taking to be: said measurer comprises clock gauge, guide pillar and base; Said measurer also comprises L shaped carriage, two stationary shaft and four bearings; Vertical section of the mounting rod of clock gauge and L shaped carriage removably connects, and the horizontal segment of L shaped carriage and the upper surface of guide pillar removably connect, and the lower surface of guide pillar is fixedly mounted on the center of base; Be laid with a plurality of through holes that are used to install rotating rod on the guide pillar; The middle part at the two ends of this base length direction of base upper edge respectively has a U-lag, and two U-lags become to be symmetrical set with respect to the center of the Width of base, and each stationary shaft is located in the corresponding U-lag; And each stationary shaft can be adjusted with corresponding U-lag and be connected, and a bearing is respectively installed at the two ends of each stationary shaft.

The utlity model has following beneficial effect: the utility model is for measuring the special measuring tool of setting-up eccentricity pin-and-hole, and is easy and simple to handle, measuring accuracy is high, and eccentricity value that can eccentric pin-and-hole is accurately measured; Simplify the process of the eccentricity value measurement of eccentric pin-and-hole, improved work efficiency in the steam turbine assembling process.

Description of drawings

Fig. 1 is the whole front view of the utility model, and Fig. 2 is the survey view of Fig. 1, and Fig. 3 is the structural representation of base, the principle of work synoptic diagram when Fig. 4 is the utility model measurement, and Fig. 5 is the A-A cut-open view of Fig. 4.

Embodiment

Embodiment one: combine Fig. 1-Fig. 3 that this embodiment is described; The measurer of this embodiment comprises clock gauge 1, guide pillar 2 and base 3; Said measurer also comprises L shaped carriage 4, two stationary shaft 6 and four bearings 7; Vertical section of the mounting rod of clock gauge 1 and L shaped carriage 4 removably connects, and the upper surface of the horizontal segment of L shaped carriage 4 and guide pillar 2 removably connects, and the lower surface of guide pillar 2 is fixedly mounted on the center of base 3; Be laid with a plurality of through hole 2-1 that are used to install rotating rod on the guide pillar 2; The middle part at the two ends of these base 3 length directions of base 3 upper edges respectively has a U-lag 3-1, and two U-lag 3-1 become to be symmetrical set with respect to the center of the Width of base 3, and each stationary shaft 6 is located in the corresponding U-lag 3-1; And each stationary shaft 6 can be adjusted with corresponding U-lag 3-1 and be connected, and a bearing 7 is respectively installed at the two ends of each stationary shaft 6.

Embodiment two: combine Fig. 1 that this embodiment is described, each bearing 7 of this embodiment is a rolling bearing, and the result is accurate for this structure measurement.Other composition and annexation are identical with embodiment one.

Principle of work: combine Fig. 4 and Fig. 5 explanation, the position of two stationary shaft 6 at open slot 3-1 adjusted in the aperture of at first measuring two eccentric orfices with inside dial indicator; Make it respectively apart from dial framework central shaft equidistance; And the distance of two stationary shaft 6 equals the radius of the less eccentric orfice of one of them internal diameter, and base 3 is put in the adjustment above-mentioned eccentric orfice just in time, and bearing is contacted with the inwall of eccentric orfice; The gauge outfit of clock gauge 1 is contained in corresponding another eccentric orfice; Be in the position of the inwall that just in time records eccentric orfice, rotary bar is inserted in the through hole 2-1, the rotated rod; Measurer rotates a circle, and reads maximal value (like M point among Fig. 4) and minimum value (like N point among Fig. 4) on the clock gauge 1.Maximal value deducts the k as a result of minimum value, draws the eccentricity value that is eccentric orfice divided by 2 again.Principle such as Fig. 5 show: x is the eccentricity value (being the centre deviation value in two holes) of two eccentric orfices, and the radius value of measured eccentric orfice is r, and the maximal value of measurement is m; Minimum value is n, as scheming: since m=r+x, n=r-x; So k=m-n=r+x-(r-x)=r+x-r+x=2x; Reach a conclusion: x=k/2, so draw, the k as a result that the maximal value of measurement deducts minimum value draws the eccentricity value that is eccentric orfice divided by 2.

Claims

1. one kind the measurer of measuring eccentric pin-and-hole in the Large Steam Turbine Sets is installed; Said measurer comprises clock gauge (1), guide pillar (2) and base (3); It is characterized in that said measurer also comprises L shaped carriage (4), two stationary shaft (6) and four bearings (7); Vertical section of the mounting rod of clock gauge (1) and L shaped carriage (4) removably connects, and the upper surface of the horizontal segment of L shaped carriage (4) and guide pillar (2) removably connects, and the lower surface of guide pillar (2) is fixedly mounted on the center of base (3); Be laid with a plurality of through holes (2-1) that are used to install rotating rod on the guide pillar (2); The middle part at the two ends of base (3) this base of upper edge (3) length direction respectively has a U-lag (3-1), and two U-lags (3-1) become to be symmetrical set with respect to the center of the Width of base (3), and each stationary shaft (6) is located in the corresponding U-lag (3-1); And each stationary shaft (6) can be adjusted with corresponding U-lag (3-1) and be connected, and a bearing (7) is respectively installed at the two ends of each stationary shaft (6).

2. according to the measurer of measuring eccentric pin-and-hole in the said installation Large Steam Turbine Sets of claim 1, it is characterized in that each bearing (7) is a rolling bearing.