CN205332993U

CN205332993U - Pit area detector

Info

Publication number: CN205332993U
Application number: CN201620068316.9U
Authority: CN
Inventors: 李苑标; 金涛; 黄俊晖; 邢少斌; 游扩锋; 徐子俊; 陈雷; 范小兵; 李军龙; 乐俊俊
Original assignee: Guangzhou Wenchong Shipyard Co Ltd
Current assignee: Guangzhou Wenchong Shipyard Co Ltd
Priority date: 2016-01-25
Filing date: 2016-01-25
Publication date: 2016-06-22
Anticipated expiration: 2026-01-25

Abstract

The utility model provides an open at the center has circular through -hole of pit area detector, circular flat board and an area then is and detects a mouthful diameter matched with setting value that draws has the centering cross curve, and it has the detection mouth that equals with the pit diameter to open according to pit size optionally on the circumference, the flat board. Examine time measuring, confirm earlier the size of pit, then choose corresponding detector for use, aim at the centre of a circle of detector with the pit again, the theoretical influence area of the pit of can drawing up. But do not confirm the influence scope of pit through this pit area detector convenient and fast ground, its operation process is very simple, and accuracy and work efficiency are high.

Description

A kind of pit area detector

Technical field

This utility model relates to detection instrument, particularly relates to the detector of a kind of pit area detecting Surface of profile。

Background technology

Pit is also called pitted skin, is one of sheet material, profile surface defect, and showing as product surface is rough matsurface, many continuously in flakes, also have local or in periodic distribution。Pit allows for the defect existed, but its degree of depth must not exceed the scope of thickness deviation of product。If when the pit degree of depth is more than the 20% of thickness of slab, pit area more than steel plate area 2% time press interlayer and process, therefore the processing scheme for steel plate defect of adding up of pit area has direct decisive action。But the specific standards that the method for adding up at present pit area is ununified, lacks again concrete operation instrument, and existing statistic processes is all complex, and it exists substantial amounts of estimating, degree of accuracy is low and error rate is high。

Summary of the invention

This utility model aims to provide the detector of a kind of pit area detecting Surface of profile, to simplify operation, and improves accuracy and the detection efficiency of detection。

Pit area detector described in the utility model, including circular flat board, flat board has manhole and the detection mouth of detection pit diameter, flat board has also been drawn centering cross hairs；The center of circle of manhole, centering cross hairs central point all overlap with the center of circle of flat board, and four limits of centering cross hairs extend to flat board from through hole；Detection mouth is semicircle opening, and the center of circle is arranged on the circumference of flat board；The area of flat board is the setting value closed with detection mouth diameter compatible。

Pit area detector described in the utility model, the circumferential edge of circular flat board has detection mouth, and opening be semicircle, by this detection mouth pit near required measurement during work, when size and the pit of detection mouth used are just consistent, namely can determine that the diameter of pit；Then the manhole of plate center is placed in pit, and utilizes centering cross hairs to assist so that the center of circle of through hole overlaps with the center of circle of pit；Marking, along the circumference of flat board, the scope that flat board covers again, this scope, namely the area of flat board is exactly the theoretical influence area of surveyed pit。In ship domain, according to International Association of Classification Societies (IACS) (InternationalAssociationofClassificationSocieties, be called for short IACS) standard: for the discontinuous defect in single surface, affected area is by obtaining from the standardized continuous lines in 20mm place around discontinuous defect；For the discontinuous defect in a group surface, affected area is by obtaining from the standardized continuous lines in 20mm place around these defects。According to this standard, the big I of influence area of pit according to the size of pit, namely the diameter of pit and determine, the pit influence area such as 1mm diameter is 0.00132m², the pit influence area of 2mm diameter is 0.00138m², so the area of flat board being set to the setting value closed with detection mouth diameter compatible, now ruling along the circumference of flat board, position and the size of influence area can be determined quickly and easily according to the position of pit and diameter；And the setting of centering cross hairs had both been easy to location, to improve again positioning precision；Detection mouth is set to semicircle and on flat board limit, can determine that the diameter of pit when detecting size and the pit of mouth and being just consistent, and it operates visualization height, and process is convenient and swift and accurate。

Accompanying drawing explanation

Fig. 1 is the structural representation of pit area detector。

Fig. 2 is single pit influence area schematic diagram。

Fig. 3 is discrete type pit influence area schematic diagram。

Fig. 4 is intensive pit influence area schematic diagram。

Detailed description of the invention

As it is shown in figure 1, a kind of pit area detector, including circular flat board 1, flat board has manhole 2 and the detection mouth 3 of detection pit diameter, flat board has also been drawn centering cross hairs 4；The center of circle of manhole, centering cross hairs central point all overlap with the center of circle of flat board, and four limits of centering cross hairs extend to flat board from through hole；Detection mouth is semicircle opening, and the center of circle is arranged on the circumference of flat board；The area of flat board is the setting value closed with detection mouth diameter compatible。

After determining pit size and central point, the circumference along flat board draws the scope that flat board covers, i.e. the theoretical influence area of surveyed pit。As in figure 2 it is shown, be single pit influence area schematic diagram, wherein cover the theoretical influence area of the i.e. pit in region 102 of pit 101；As it is shown on figure 3, be discrete type pit influence area schematic diagram, the influence area of these pits is the area sum of shade；As shown in Figure 4, being intensive pit influence area schematic diagram, detection person can draw pit main plot edge line by the pit of outermost edge, then adopts polygon principle to calculate pit zone of influence area according to the shape in whole region。

Described pit area detector, the diameter of detection mouth 3 can be 1mm, it is also possible to be any one in 2mm, 3mm, 4mm or 5mm。According to daily statistics, diameter is that the ratio that the pit of 1-5mm respectively accounts for is approximately 50% respectively, 25%, 10%, 3%, 2%, therefore almost can assert that sheet material, profile surface defect are mainly based on 1mm, 2mm, 3mm, 1-5mm has included pitted size substantially, so correspondingly arranging five kinds of detectors of 1-5mm, can meet detection demand。

The diameter of through hole 2 is more than 5mm, and is advisable with 8mm。The through hole of more than 5mm can meet the detection demand of pit, and through hole is set to 8mm, can be easy to the operation measured on the one hand, be more prone to be directed at, and needed for also can reducing the material of flat board on the other hand, reduces the weight of detector, improves operation ease further。

Flat board 1 has for hanging or the latch closure hole 5 of connection fastener。For maximum detector, the pit influence area of 5mm diameter is 0.00159m², the diameter of detector is 45mm, its small volume, life-time service is easily lost, so arranging latch closure hole, it is possible to be suspended on hook when non-usage, it is also possible to fastener, multiple detectors are linked together, with fastener, detector and other article can also be linked together, this is possible to prevent to lose on the one hand, also allows for carrying on the other hand, needed for reducing the material of flat board further simultaneously, reduce the weight of detector, improve operation ease。

Flat board 1 is carved with the numerical marker 6 of corresponding pit influence area。This had both been easy to the resolution of detector and had chosen, and also allowed for the calculating of area。

Claims

1. a pit area detector, it is characterised in that: include circular flat board (1), flat board has manhole (2) and the detection mouth (3) of detection pit diameter, flat board has also been drawn centering cross hairs (4)；The center of circle of manhole, centering cross hairs central point all overlap with the center of circle of flat board, and four limits of centering cross hairs extend to flat board from through hole；Detection mouth is semicircle opening, and the center of circle is arranged on the circumference of flat board；The area of flat board is the setting value closed with detection mouth diameter compatible。

2. pit area detector according to claim 1, it is characterised in that: the diameter of detection mouth (3) is be any one in 1mm, 2mm, 3mm, 4mm or 5mm。

3. pit area detector according to claim 1 and 2, it is characterised in that: the diameter of through hole (2) is more than 5mm。

4. pit area detector according to claim 3, it is characterised in that: the diameter of through hole (2) is 8mm。

5. pit area detector according to claim 1 and 2, it is characterised in that: flat board (1) has for hanging or the latch closure hole (5) of connection fastener。

6. pit area detector according to claim 1 and 2, it is characterised in that: flat board (1) is carved with the numerical marker (6) of corresponding pit influence area。