CN105157501B - Cylinder sleeve inner surface flaw detection regional positioning device - Google Patents

Abstract

The invention provides a positioning device for flaw detection area on the inner surface of a cylinder liner. The device is composed of a dial, a scale and a slot. Plane mirror brackets are arranged at both ends of the scale, and a mirror is arranged opposite to each other, forming an angle of 45 ^° with the scale. , There is a scale installation groove on the card slot, the width is consistent with the scale; after assembling all parts, rotate the card slot and translate the scale, you can observe the scar position on the inner surface of the cylinder liner through the mirror, confirm and record, and you are done. Flaw detection positioning. The device provided by the present invention can measure angle positioning and depth positioning at the same time; use the principle of plane mirror reflection to measure, effectively reducing the error caused by manual visual inspection due to the fact that the line of sight cannot be perpendicular to the rusted area; use a sector-shaped depth scale With the positioning block, the error caused by manual measurement is effectively reduced.

Description

Cylinder Liner Inner Surface Flaw Detection Area Positioning Device

technical field

This design is used for regional positioning in the measurement of the corrosion condition of the inner surface of the engine cylinder liner.

Background technique

During the use of the cylinder liner, due to mechanical load, thermal load and other reasons, it is prone to friction damage and corrosion, and the equipment is fatigued and aging, which makes the failure rate significantly increase. At present, in the measurement of the corrosion of the inner surface of the existing cylinder liner, general measuring tools, such as inner diameter micrometers or inner diameter dial indicators, are used to roughly estimate the location of the rusted area through visual inspection, which will produce certain visual errors, and the existing angle and Depth positioning is manually measured separately, and there will be large errors in data integration.

Contents of the invention

The technical problem to be solved by the present invention is: in the existing measurement of the corrosion condition of the inner surface of the engine cylinder liner, the location of the corrosion area is roughly estimated by visual inspection, and the angle and depth of the flaw detection area need to be measured separately, which is prone to calculation errors in data analysis.

In view of the above technical problems, the technical solution adopted by the present invention is to provide a positioning device for the flaw detection area on the inner surface of the cylinder liner. A mirror is arranged opposite to the scale, which forms an angle of 45 ^° with the scale. The slot is provided with a scale installation slot, and the width is consistent with the scale. When measuring, the various parts can be combined to test.

During the test: first buckle the dial to the cylinder liner so that the inner surface coincides; put the slot on the dial so that the outer surface of the slot coincides with the inner surface of the dial; put the scale in the slot During the process, make the outer surface of the scale close to the bottom of the groove; after the assembly is completed, rotate the groove and translate the scale, and observe the position of the scar on the inner surface of the cylinder liner through the mirror, and record it after confirmation.

The dial is mainly used to locate the cylinder liner and the card groove of the tested piece, and to locate the circumferential position of the scar on the inner surface of the cylinder liner according to the scale on it. The scale range of the dial is 360 ^° , and the division value is 1 ^° .

The scale is mainly used to measure the axial height of the scar on the inner surface of the cylinder liner, the range of the scale is 300mm, and the division value is 1mm.

The card slot is mainly used for positioning the scale and readings, and is rotated on the scale to measure the circumferential position of the scar on the inner surface.

The design principle of the present invention is to use the principle of light reflection and a pair of mirrors to convert the scars on the inner surface of the cylinder liner that are difficult to observe and measure to positions that are easy to observe, thereby improving the accuracy and operability of the measurement.

The beneficial effects of the present invention are: the simultaneous measurement of angle positioning and depth positioning is realized; the measurement is carried out by using the principle of plane mirror reflection, which effectively reduces the error caused by the fact that the line of sight cannot be perpendicular to the rusted area during manual visual inspection; the depth scale with a fan-shaped cross section is used With the positioning block, the error caused by manual measurement is effectively reduced.

Description of drawings

Figure 1 is a schematic diagram of a flaw detection device for the inner surface of a cylinder liner;

Fig. 2 is a schematic diagram of measuring the cylinder liner by the flaw detection device on the inner surface of the cylinder liner;

Figure 3 is a schematic diagram of the dial structure;

Figure 4 is a schematic diagram of the dial scale;

Fig. 5 is a structural schematic diagram of a scale;

Fig. 6 is a schematic diagram of scale scale;

Fig. 7 is a schematic diagram of scale scale zero point;

Fig. 8 is a schematic diagram of the structure of the card slot;

In the figure: 1. cylinder liner; 2. dial; 3. scale; 4. mirror; 5. card slot; 6. plane mirror bracket; 7. scale slot.

Detailed ways

As shown in Figure 1, a new type of positioning device for the flaw detection area on the inner surface of the cylinder liner, its basic structure includes a dial 2, a scale 3 and a slot 5; the structure of the dial is shown in Figure 3, and its scale is shown in Figure 4 As shown; scale structure as shown in Figure 5, scale two ends are provided with plane mirror support 6, arrange a mirror oppositely respectively, become 45 ° angle with scale 3, the scale of scale as shown in Figure 6, 7; The structure of the groove 5 is shown in Fig. 8, wherein the slot 5 is provided with a scale groove 7 for installing the scale 3, and its width is consistent with the scale.

Operation method in actual use: as shown in Figure 2, fasten the dial 2 to the cylinder liner 1 so that the inner surface coincides; put the slot 5 on the dial 2 so that the outer surface of the slot 5 is in line with the scale The inner surfaces of the disk 2 coincide; put the scale 3 with the mirror 4 on both ends into the slot 5, so that the outer surface of the scale 3 is close to the bottom of the slot 5; after the assembly is completed, as shown in Figure 2 , Rotate the card slot 5 and translate the scale 3, the position of the scar on the inner surface of the cylinder liner can be observed through the mirror 4, and be determined and recorded.

The invention relates to a special flaw detection area positioning device, which can adjust the size of the device according to the object to be tested. For example, it is suitable for cylinder liners with an inner diameter of 100mm, an outer diameter of 130mm, and a height of 0-300mm. Since the present application can be embodied in various forms without departing from the spirit or essence of the invention, it should be understood that the above-described embodiments are not limited to any of the foregoing details, but should be construed broadly within the spirit and scope defined by the claims. The adjustment of all dimensions or the selective use of similar materials falling within the scope of the claims or their equivalents shall be covered by the claims.

Claims (1)

1. The regional positioning device 1. a kind of cylinder sleeve inner surface is detected a flaw, it is characterised in that：Device is by dial, graduated scale and pocket set Into wherein graduated scale is provided at both ends with plane mirror support, respectively opposite arrangement mirror, itself and graduated scale angle at 45 °, neck On be provided with graduated scale mounting groove, width is consistent with graduated scale, can test each several part combination during measurement；

   The dial is mainly used in positioning measured piece cylinder sleeve and neck, and according to scale thereon come table in positioning cylinder set The circumferential position of face scar, dial range are 360 °, and scale division value is 1 °；

   The graduated scale is mainly used in measuring the axial height of cylinder sleeve inner surface scar, and the range of graduated scale is 300mm, indexing It is worth for 1mm；

   The neck is mainly used in location graduation chi and reading, and is rotated on dial to measure the circumference position of inner surface scar Put.