CN2547427Y - Steel plate and band section contour profile measuring instrument - Google Patents

Abstract

The utility model relates to a measuring instrument for the cross-sectional profile shape of strip steel, which is characterized in that the measuring instrument comprises upper and lower measuring structures which clamp the upper and lower surfaces of the plate to be measured, and the measuring structures are sequentially connected with measuring wheels. , mechanical transmission mechanism, displacement measurement structure; the mechanical transmission structure includes a transmission rod connected to the measuring wheel, a guide linear bearing, and the transmission rod is vertically inserted in the guide linear bearing; the displacement measurement structure includes a measurement reference plate and a displacement Sensor, the measurement reference plate is driven by the transmission rod, and its displacement signal is transmitted to the displacement sensor; the displacement sensor is an eddy current displacement sensor, which is connected with a computer in a circuit; and the displacement signal it receives It is input to the computer; it can carry out continuous measurement on the measured object, and has high precision, and the measuring instrument has a simple structure and low cost.

Description

Strip Steel Section Profile Shape Measuring Instrument

technical field

The utility model relates to a mechanical measuring instrument, in particular to a high-precision measuring instrument for measuring the cross-sectional contour shape of a strip steel material, including convexity and local parameters.

Background technique

As one of the most important products of the iron and steel industry, strip steel plays a very important role in the development of the national economy. It is widely used in industry, agriculture, national defense and daily life. With the rapid development of modern industry and science and technology, the vast number of users of industrial enterprises have put forward more and more strict requirements on the quality of strip steel. One of the most important quality indicators is the shape of steel. Technicians in steel mills need to detect the shape quality of a large number of incoming materials and finished strips every day. The current detection methods mainly include contact and non-contact detection. The non-contact type usually uses a ray thickness gauge to detect the online strip. The principle of ray thickness measurement is based on the principle that different thicknesses of materials have different absorption of rays. It uses nuclear radiation penetration detection methods to measure the thickness of plates. The advantage of this method is that it can continuously measure the measured object and has high precision; although the radiation source is usually radioactive isotopes and X-rays, although it is a low radiation level, there are still high requirements for radiation protection. There are many inconveniences in the use and maintenance of the instrument. The contact detection method is that the operator uses thickness measuring tools such as calipers or ultrasonic thickness gauges to measure the thickness of the steel plate point by point along the measured section of the strip steel, and then converts the recorded measured value into the change value of the thickness to obtain the shape parameter. It belongs to a measurement method for estimating plate shape parameters by measuring absolute thickness. This measurement method is time-consuming and labor-intensive, and the work efficiency is extremely low. It is often necessary to measure the thickness value of hundreds of points for each steel plate. Moreover, it is still the measurement of each intermittent point instead of the measurement of continuous plate shape, and it is impossible to obtain accurate points. thickness value. In addition, for steel plates of different materials, only by adjusting to different ultrasonic velocities can more accurate measurements be obtained.

Utility model content

The technical problem to be solved by the utility model is to provide a profile shape measuring instrument for strip steel section, which can continuously measure the measured object with high precision, and the measuring instrument has a simple structure and low cost.

The technical scheme of the utility model is: to provide a measuring instrument for measuring the profile shape of the section profile of the strip steel material, which is used to measure the profile shape of the plate section. The upper and lower measurement structures, the measurement wheel, the mechanical transmission mechanism, and the displacement measurement structure connected in turn by the measurement structure;

The mechanical transmission structure includes a transmission rod connected to the measuring wheel and a guide linear bearing, and the transmission rod is vertically inserted into the guide linear bearing;

The displacement measurement structure includes a measurement reference plate and a displacement sensor, the measurement reference plate is driven by the transmission rod and transmits its displacement signal to the displacement sensor;

The displacement sensor is an eddy current displacement sensor, which is connected to a computer in a circuit; and the displacement signal it receives is input to the computer;

The measuring instrument also includes a fixing frame with an opening on one side, and the measuring wheel, the mechanical transmission mechanism, and the displacement measuring structure are sequentially fixed on the fixing frame;

On the side of the fixing frame opposite to the opening, there are several pairs of positioning holes, and the width of the opening of the fixing frame can be adjusted by selecting the positioning holes;

On one side of the measuring wheel, at the opening of the fixing frame, a supporting wheel is arranged on the fixing frame;

The supporting wheels can be arranged below the opening;

Below the opening of the fixing frame, on the outside of the measuring wheel, a guide plate is also provided, and an elastic member is provided below the guide plate;

A pair of photodetectors are respectively arranged above and below the opening of the fixing frame, relative to the front and rear of the moving direction of the plate to be measured;

Above the opening of the fixed frame, a sampling signal trigger is also arranged on one side of the photodetector, and the sampling signal trigger is connected to the eddy current displacement sensor and the photodetector in a circuit;

The measurement range of the eddy current displacement sensor is 2 to 5 millimeters;

Through the utility model, the section of the plate can be continuously measured to obtain the profile curve of the section of the plate, thereby calculating the precise shape parameters of the plate, and calculating the shape parameters of the plate through filtering and regression. Therefore, the surface contour shape of the section of the plate can be measured more accurately, and the utility model is easy to operate, simple in structure and low in cost.

Description of drawings

Fig. 1 is the structural representation of the utility model;

Fig. 2 is a schematic structural view of the lower half of the opening of the utility model;

Fig. 3 is a structural schematic diagram of the upper half of the opening of the utility model.

Detailed ways

A preferred embodiment of the present invention will be described below with reference to FIGS. 1 to 3 .

As shown in Figure 1, the utility model comprises upper and lower symmetry, and sequentially connected measuring wheels 15, 15', upper and lower mechanical transmission structures composed of transmission rods and guide linear bearings 12, 12', and a measurement reference plate 16, 16', and the upper and lower displacement measurement structures formed by the eddy current displacement sensors 11, 11', the measuring wheels 15, 15', the upper and lower mechanical transmission structures, and the displacement measurement structure are fixed on a frame 2, the machine Frame 2 is a C-shaped frame, which is provided with an opening 21, and measuring wheels 15, 15' are respectively arranged above and below the opening 21. Below the opening 21, on the outside of the measuring wheel 15', a Guide plate 14, an elastic member (not marked in the figure) is set under this guide plate 14; Simultaneously, several supporting wheels 13,13' can be set above and below the opening, and measuring wheels 15,15' are respectively Supported by elastic components, the eddy current displacement sensors 11, 11' are respectively fixed on the fixed frames 3 and 3' and connected to a computer in a circuit.

As shown in Fig. 2, above and below the opening 21, a pair of photodetectors 17, 17', 18, 18' are respectively arranged in front and rear relative to the movement of the plate to be measured. As shown in Figure 3, above the opening 21, a sampling signal trigger 19 is also arranged on one side of the photodetectors 17, 18, and the sampling signal trigger 19 and the two pairs of photodetectors 17, 17', 18 , 18' into a circuit connection.

When the measured plate enters the measuring instrument to measure the cross-sectional profile shape, it is introduced by the guide plate 14, and when it enters the measuring wheels 15, 15', because the guide plate 14 is equipped with elastic parts, the guide plate 14 is measured by the plate. Press down, and at the same time, due to the action of the elastic parts, the usually closed measuring wheels 15, 15' are opened, and the supporting wheels 13, 13' support the measured plate, and the measured plate enters between the measuring wheels 15, 15' and is located in the opening , relative to the photodetectors 17, 17', 18, 18' and the sampling signal trigger 19 controlling the eddy current sensors 11, 11' in front of and behind the movement of the measured plate, and performing data sampling;

When the section thickness of the plate to be measured changes, the measuring wheels 15, 15' vertically displace up and down, and drive the transmission rod to move. The guide linear bearings 12, 12' make up and down displacements, the plane where the measurement reference plates 16, 16' are located is perpendicular to the movement plane of the transmission rod, and the up and down displacements of the guide linear bearings 12, 12' drive the measurement reference plates 16, 16 'up and down displacement, eddy current sensors 11, 11' are fixed, and it collects the distance change between it and the measurement reference plate 16, 16', and sends the signal into the computer to obtain the cross-sectional profile shape curve of the plate, And through its internal data processing system, various evaluation parameters of the plate are calculated through filtering and regression processing.

On the back plate 2 of the side of the C-shaped frame relative to the opening 21, several upper and lower paired positioning holes 22 are arranged, and the opening of the opening 21 can be adjusted by selecting the positioning holes 22. The change is small, generally less than 2 mm, so the measuring range of the eddy current sensors 11, 11' is also 2-5 mm.

The utility model has the advantages of simple structure and convenient operation, and is suitable for measuring the cross-sectional contour shapes of plates with different thicknesses.

Claims (12)

1. the measuring instrument of a sheet steel product cross-sectional outline and shape, the contour shape that is used for the sheet material measurement cross section, characteristics are, this measuring instrument comprises: the upper and lower measurement structure on the upper and lower surface of tested sheet material that the level that inserts and puts is put, measure meter wheel, mechanical transfer mechanism that structure connects successively, the displacement measurement structure.

2. the measuring instrument of sheet steel product cross-sectional outline and shape as claimed in claim 1 is characterized in that, described mechanical transfer structure comprises transmission bar, a guiding linear bearing of a connection meter wheel, and this transmission bar vertically is inserted in this guiding linear bearing.

3. the measuring instrument of sheet steel product cross-sectional outline and shape as claimed in claim 2, it is characterized in that, described displacement measurement structure comprises one and measures a reference plate and a displacement transducer, and this is measured reference plate and drives motion by transmitting bar, and its displacement signal is passed to displacement transducer.

4. the measuring instrument of sheet steel product cross-sectional outline and shape as claimed in claim 3 is characterized in that, described displacement transducer is an eddy current displacement sensor, and it becomes circuit to be connected with a computer; And the displacement signal of its collection is input to a computer.

5. the measuring instrument of sheet steel product cross-sectional outline and shape as claimed in claim 1 is characterized in that, this measuring instrument also comprises the fixed mount that side one by one has opening, and described meter wheel, mechanical transfer mechanism, displacement measurement structure are fixed on this fixed mount successively.

6. the measuring instrument of sheet steel product cross-sectional outline and shape as claimed in claim 5 is characterized in that, in the side of described fixed mount with respect to opening, is provided with somely to locating hole, can adjust the width of described fixed mount opening by selected locating hole.

7. the measuring instrument of sheet steel product cross-sectional outline and shape as claimed in claim 5 is characterized in that, in a side of described meter wheel, the opening part of described fixed mount is provided with support wheel on the fixed mount.

8. the measuring instrument of sheet steel product cross-sectional outline and shape as claimed in claim 7 is characterized in that, described support wheel can be arranged at the below of opening.

9. the measuring instrument of sheet steel product cross-sectional outline and shape as claimed in claim 5 is characterized in that, below the opening of fixed mount, in the outside of meter wheel, a guide plate is set also, and the below of this guide plate is provided with an elastomeric element.

10. the measuring instrument of sheet steel product cross-sectional outline and shape as claimed in claim 5 is characterized in that, at the upper and lower of fixed mount opening, with respect to the place ahead and the rear of institute's drafting board material direction of motion, each is provided with a pair of photodetector respectively.

11. the measuring instrument of sheet steel product cross-sectional outline and shape as claimed in claim 10, it is characterized in that, above the fixed mount opening, side at described photodetector also is provided with a sampled signal trigger, this sampled signal trigger and described eddy current displacement sensor, photodetector become circuit to connect.

12. the measuring instrument of sheet steel product cross-sectional outline and shape as claimed in claim 4 is characterized in that, the measurement category of described eddy current displacement sensor is 2～5 millimeters.

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