Device and method for measuring the slope and the thickness of the leg of a profiled steel

Abstract

The application provides a device and a method for measuring the slope and the leg thickness of a profile steel, which comprises a main ruler, a first fixed ruler, a first auxiliary ruler and a second auxiliary ruler, wherein the first fixed ruler and the first auxiliary ruler are arranged on one side of the main ruler, one end of the first fixed ruler is connected with one end of the main ruler, and one end of the first auxiliary ruler is slidingly connected with the main ruler; the second auxiliary ruler is slidingly connected with the first auxiliary ruler, a contact is arranged on one end of the second auxiliary ruler close to the first fixed ruler, and the contact can be attached to the first fixed ruler; and scales are arranged on the main ruler and the first auxiliary ruler. The device can be used to accurately measure the slope of a workpiece and the leg thickness of a double-side non-parallel profile steel such as a I-beam and a channel steel under different standards, and the precision can meet the requirements of the national standard. The device has the advantages of simple equipment structure, convenient use and reusability, simple operation and easy popularization.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of measuring tools in the mechanical industry or the metallurgical industry, in particular to a device and a method for measuring the slope and the leg thickness of a profile steel. BACKGROUND

[0002] In the mechanical industry, the slope of a workpiece needs to be measured, and there is currently no tool for directly and accurately measuring the slope, such as Figure 1 As shown in the figure, the slope of the workpiece = b / h;

[0003] Before GB_T 706-2016, the standard does not require the measurement of the leg thickness, which is not a delivery condition. The GB_T 706-2016 standard clearly stipulates that the allowable deviation of the middle thickness t of the leg of an I-beam and channel steel is ±0.06t, which indicates that the middle thickness t of the leg is a delivery condition for I-beam and channel steel and has a clear tolerance requirement, Figure 2 The figure shows a cross-sectional view of an I-beam, and the middle thickness t of the leg of the I-beam is the thickness at the position of (b-d) / 4. Since the inner side wall of the leg of the I-beam has a certain slope, and the leg height b and the web thickness d fluctuate within a certain tolerance range, it is difficult to accurately position the position of (b-d) / 4 during production and use, and only estimation can be performed. Similarly, the channel steel also has the above-mentioned problems. Currently, there is no device that can accurately measure the middle thickness t of the leg of an I-beam and channel steel.

[0004] Therefore, there is a need for a device and a method for measuring the slope and the leg thickness of a profile steel. SUMMARY

[0005] The present application aims to provide a device and a method for measuring the slope and the leg thickness of a profile steel, which can accurately measure the slope of a workpiece and the middle thickness of the leg of an I-beam and channel steel, and the measurement accuracy can reach 0.02mm, and the device has the advantages of simple operation, easy learning, and low cost.

[0006] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0007] A device for measuring the slope and the leg thickness of a profile steel, comprising a main ruler, a first fixed ruler, a first auxiliary ruler, and a second auxiliary ruler, wherein the first fixed ruler and the first auxiliary ruler are arranged on one side of the main ruler, one end of the first fixed ruler is connected to one end of the main ruler, and one end of the first auxiliary ruler is slidingly connected to the main ruler; the second auxiliary ruler is slidingly connected to the first auxiliary ruler, and a contact is connected to one end of the second auxiliary ruler close to the first fixed ruler, and the contact can be attached to the first fixed ruler; the main ruler and the first auxiliary ruler are both provided with scales.

[0008] Further, in the device for measuring slope and leg thickness of section steel, a sliding block is further included, a first sliding groove is arranged on the sliding block, the sliding block is sleeved on the main ruler through the first sliding groove, one end of the first auxiliary ruler is connected with the sliding block, the first auxiliary ruler is slidably connected with the main ruler through the sliding block, and a scale is arranged on the sliding block; when the contact head is in contact with the first fixed ruler, the zero scale of the sliding block is aligned with the zero scale of the main ruler.

[0009] Further, in the device for measuring slope and leg thickness of section steel, a second sliding groove is arranged on the second auxiliary ruler, and the second auxiliary ruler is slidably connected with the first auxiliary ruler through the second sliding groove; and the end of the first auxiliary ruler away from the main ruler is a plane.

[0010] Further, in the device for measuring slope and leg thickness of section steel, the side surface of the first fixed ruler close to the first auxiliary ruler is perpendicular to the axis of the main ruler, and the side surface of the first auxiliary ruler close to the first fixed ruler is perpendicular to the axis of the main ruler.

[0011] Further, in the device for measuring slope and leg thickness of section steel, a hanging rod is further included, the hanging rod is arranged between the second auxiliary ruler and the contact head, and the contact head can be connected with the second auxiliary ruler through the hanging rod.

[0012] Further, in the device for measuring slope and leg thickness of section steel, one end of the second auxiliary ruler is provided with a first protrusion, one end of the hanging rod is provided with a first groove matched with the first protrusion, the first protrusion can enter the first groove, and the first groove and the first protrusion are matched to enable the hanging rod to be inserted with the second auxiliary ruler.

[0013] Further, in the device for measuring slope and leg thickness of section steel, the other end of the hanging rod is provided with a second protrusion, the contact head is in a conical structure, the bottom surface of the conical contact head is provided with a second groove, the second protrusion can enter the second groove, and the second protrusion and the second groove are matched to enable the contact head to be inserted with the hanging rod.

[0014] Further, in the device for measuring slope and leg thickness of section steel, the hanging rod includes a plurality of rods, and the lengths of the plurality of rods are different; preferably, the section steel includes an I-beam and a channel steel; preferably, a bolt hole is arranged at the end of the second auxiliary ruler away from the first fixed ruler, a fixing bolt can abut against the first auxiliary ruler after penetrating through the bolt hole, and the relative position of the second auxiliary ruler and the first auxiliary ruler can be fixed by tightening the fixing bolt.

[0015] Further, in the device for measuring slope and leg thickness of profile steel described above, a second fixed ruler and a third auxiliary ruler are further included, the second fixed ruler and the third auxiliary ruler are arranged on the other side of the main ruler, the second fixed ruler is fixedly connected with the main ruler, one end of the third auxiliary ruler is connected with the sliding block, and the third auxiliary ruler is slidably connected with the main ruler through the sliding block; preferably, the first fixed ruler, the second fixed ruler and the main ruler are in an integrated structure, and the first auxiliary ruler, the third auxiliary ruler and the sliding block are in an integrated structure; preferably, the slope of the side of the third auxiliary ruler close to the second fixed ruler is one of 1:6, 1:10, 5:100 and 8:100.

[0016] In another aspect, a method for measuring by using the device for measuring slope and leg thickness of profile steel is provided, including the following steps:

[0017] 1. Measuring the slope of a workpiece:

[0018] 1.1 Checking the zero position of the device, sliding the first auxiliary ruler to the end of the main ruler close to the first fixed ruler, making the contact of the second auxiliary ruler abut against the first fixed ruler, checking whether the zero scale of the sliding block is aligned with the zero scale of the main ruler, if yes, performing the measuring work, and if not, performing the calibration;

[0019] 1.2 Selecting the hanging rod, selecting the hanging rod with a proper length according to the principle that the first auxiliary ruler does not interfere with the workpiece to be measured during the measuring, and then the measuring size of the main ruler = the reading of the main ruler - the length of the hanging rod;

[0020] 1.3 Measuring the thickness of a position of the workpiece to be measured, first adjusting the second auxiliary ruler to the x position, tightening the fixing bolt to fix the position of the second auxiliary ruler, then making the main ruler abut against the outer side wall of the workpiece to be measured, sliding the first auxiliary ruler and making the contact touch the inner side wall of the workpiece, at this time, the reading of the main ruler = b + the length of the hanging rod, and then the thickness of the workpiece at this position is b;

[0021] 1.4 Measuring the thickness of another position of the workpiece, loosening the fixing bolt and adjusting the second auxiliary ruler to the y position, then tightening the fixing bolt to fix the position of the second auxiliary ruler, sliding the first auxiliary ruler and making the contact touch the workpiece, at this time, the reading of the main ruler = c + the length of the hanging rod, and then the thickness of the workpiece at this position is c;

[0022] 1.5 Calculating the slope of the workpiece, the slope of the workpiece = x - y / c - b;

[0023] 2. Measuring the leg thickness of a profile steel:

[0024] 2.1 Checking the zero position of the device, sliding the first auxiliary ruler to the end of the main ruler close to the first fixed ruler, making the contact of the second auxiliary ruler abut against the first fixed ruler, checking whether the zero scale of the sliding block is aligned with the zero scale of the main ruler, if yes, performing the measuring work, and if not, performing the calibration;

[0025] 2.2 Measure the thickness t1 of the leg root position of the section steel: first adjust the second vice ruler to y2 position, tighten the fixing bolt to fix the position of the second vice ruler, then place the leg of the section steel between the first fixed ruler and the first vice ruler, make the first fixed ruler fit the outer side wall of the leg of the section steel, make the free end of the first vice ruler fit the web of the section steel, slide the first vice ruler and make the contact touch the inner side wall of the leg of the section steel, at this time the reading of the main ruler = x2 + the length of the hanging rod, then the thickness of the leg of the section steel at this position is x2, calculate the thickness t1 of the leg root of the section steel according to the slope formula k = (y1-y2) / (x1-x2);

[0026] 2.3 Measure the thickness t2 of the leg tip position of the section steel, select the third vice ruler with the same slope as the leg of the section steel, first place the leg of the section steel between the second fixed ruler and the third vice ruler, make the second fixed ruler fit the outer side wall of the leg of the section steel, make the leg tip of the section steel fit the main ruler, and make the third vice ruler fit the inner side wall of the leg of the section steel, then the reading on the main ruler is the thickness t2 of the leg tip position of the section steel;

[0027] 2.4 Calculate the middle thickness t of the leg of the section steel, the middle thickness t of the leg of the section steel = (t1+t1) / 2.

[0028] It can be seen that the application discloses a device and a measuring method for measuring the slope and the leg thickness of a section steel, the device can be used to accurately measure the slope of a workpiece and the leg thickness of a double-side non-parallel section steel such as an I-shaped steel and a channel steel under different standards, and the precision can meet the requirements of the national standard. The device has the advantages of simple equipment structure, convenient use, reusability, simple operation and easy popularization. BRIEF DESCRIPTION OF DRAWINGS

[0029] The drawings accompanying the specification of this application form a part hereof, serve to provide further understanding of the application, and together with the description of the preferred embodiments explain the application, and do not limit the application. Among them:

[0030] Figure 1 Schematic view of the slope of the workpiece.

[0031] Figure 2 Schematic view of the I-shaped steel section.

[0032] Figure 3 Structure schematic view of an embodiment of the application.

[0033] Figure 4 Structure schematic view of the main ruler of an embodiment of the application.

[0034] Figure 5 Structure schematic view of the first vice ruler of an embodiment of the application.

[0035] Figure 6 Structure diagram of the second sub-ruler of an embodiment of the present application.

[0036] Figure 7 Structure diagram of the hanging rod of an embodiment of the present application.

[0037] Figure 8 Structure diagram of the contact of an embodiment of the present application.

[0038] Figure 9 Structure diagram of the measurement of the slope of a workpiece of an embodiment of the present application.

[0039] Figure 10 Another structure diagram of the measurement of the slope of a workpiece of an embodiment of the present application.

[0040] Figure 11 Structure diagram of the measurement of the leg thickness of a workpiece of an embodiment of the present application.

[0041] Figure 12 Another structure diagram of the measurement of the leg thickness of a workpiece of an embodiment of the present application.

[0042] BRIEF DESCRIPTION OF DRAWINGS 1 main ruler; 2 first fixed ruler; 3 first sub-ruler; 4 second sub-ruler; 5 first protrusion; 6 scale; 7 sliding block; 8 first sliding slot; 9 second sliding slot; 10 hanging rod; 11 first recess; 12 second protrusion; 13 contact; 14 second recess; 15 second fixed ruler; 16 third sub-ruler; 17 fixed bolt; 18 workpiece. DETAILED DESCRIPTION

[0043] The present application will be described in detail below with reference to the drawings and embodiments. Each example is provided by way of explanation of the present application and is not intended to limit the present application. In fact, those skilled in the art will appreciate that modifications and variations to the present application can be made without departing from the scope or spirit of the present application. For example, features shown or described as part of one embodiment can be used in another embodiment to yield still a further embodiment. It is, therefore, desired that the present application be deemed to include all such modifications and variations as fall within the scope of the appended claims and their equivalents.

[0044] In the description of the present application, the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and do not require the present application to be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. The terms "connected", "connected", "provided" used in the present application should be understood broadly, for example, it can be fixed connection, or detachable connection; it can be directly connected, or indirectly connected through intermediate components, and the specific meaning of the above terms can be understood by those skilled in the art according to the specific circumstances.

[0045] One or more examples of the present application are illustrated in the accompanying drawings. The detailed description uses numerical and letter designations to refer to features in the drawings. Like or similar designations in the drawings and description have been used to refer to like or similar parts of the present application. As used herein, the terms "first", "second", and "third", etc. are used interchangeably to distinguish one component from another and are not intended to signify location or importance of the individual components.

[0046] As shown in Figures 3 to 12 According to an embodiment of the present application, a device for measuring the slope and the leg thickness of a section steel is provided, the section steel including double-side non-parallel section steels such as I-beams and channel steels, as shown in Figures 3 to 5 The device includes a main ruler 1, a first fixed ruler 2, a first auxiliary ruler 3, and a second auxiliary ruler 4. The first fixed ruler 2 and the first auxiliary ruler 3 are arranged on one side of the main ruler 1. One end of the first fixed ruler 2 is connected to one end of the main ruler 1, and one end of the first auxiliary ruler 3 is slidingly connected to the main ruler 1. The second auxiliary ruler 4 is slidingly connected to the first auxiliary ruler 3. A contact 13 is connected to one end of the second auxiliary ruler 4 close to the first fixed ruler 2, and the contact 13 can be attached to the first fixed ruler 2. The main ruler 1 and the first auxiliary ruler 3 are both provided with scales 6. The outer side wall of the workpiece 18 to be measured is a plane, and the inner side wall has a certain slope. The device can accurately measure the slope of the inner side wall of the workpiece 18 to be measured. When the workpiece 18 is a section steel (I-beam, channel steel), the device can also measure the middle thickness of the leg of the workpiece 18. The device has the advantages of simple operation, easy learning, and low cost.

[0047] Further, as shown in Figure 5As shown, the device further comprises a sliding block 7, the sliding block 7 is provided with a first sliding groove 8, the sliding block 7 is sleeved on the main ruler 1 through the first sliding groove 8, one end of the first auxiliary ruler 3 is connected with the sliding block 7, the first auxiliary ruler 3 is slidably connected with the main ruler 1 through the sliding block 7, and the sliding block 7 is provided with a scale 6; when the contact 13 is in contact with the first fixed ruler 2, the zero scale of the sliding block 7 is aligned with the zero scale of the main ruler 1. When measuring, the first fixed ruler 2 is attached to the outer side wall of the workpiece 18 to be measured, the first auxiliary ruler 3 is moved along the length direction of the main ruler 1 by sliding the sliding block 7, the position of the first auxiliary ruler 3 relative to the main ruler 1 is adjusted, the contact 13 is attached to the inner side wall of the workpiece 18 to be measured, and at this time, the reading on the main ruler 1 corresponding to the zero scale on the sliding block 7 is the thickness of the current position of the workpiece 18 to be measured.

[0048] Further, as shown in the drawings, Figure 6 As shown, the second auxiliary ruler 4 is provided with a second sliding groove 9, the second auxiliary ruler 4 is sleeved on the first auxiliary ruler 3 through the second sliding groove 9, the second auxiliary ruler 4 is slidably connected with the first auxiliary ruler 3 through the second sliding groove 9, and the second auxiliary ruler 4 can slide on the first auxiliary ruler 3. The end of the first auxiliary ruler 3 away from the main ruler 1 is a plane. By sliding the second auxiliary ruler 4 on the first auxiliary ruler 3, the position of the second auxiliary ruler 4 on the first auxiliary ruler 3 can be adjusted, the thickness of different positions of the workpiece 18 to be measured can be measured, and the slope of the workpiece 18 to be measured can be calculated by measuring two positions with different thicknesses of the workpiece 18 to be measured. Preferably, as shown in the drawings, Figure 5 As shown, the end of the first auxiliary ruler 3 away from the main ruler 1 (the free end of the first auxiliary ruler 3) is designed with a round corner to prevent interference between the lower end of the first auxiliary ruler 3 and the workpiece 18 to be measured.

[0049] Further, the side surface of the first fixed ruler 2 close to the first auxiliary ruler 3 is perpendicular to the axis of the main ruler 1, and the side surface of the first auxiliary ruler 3 close to the first fixed ruler 2 is perpendicular to the axis of the main ruler 1. That is, the two opposite surfaces of the first fixed ruler 2 and the first auxiliary ruler 3 are parallel to each other and perpendicular to the axis of the main ruler 1. The side surface of the first fixed ruler 2 can be attached to the outer side wall of the workpiece 18 to be measured, facilitating the measurement of the workpiece 18 to be measured and ensuring the measurement accuracy.

[0050] Further, the device further comprises a hanging rod 10, the hanging rod 10 is arranged between the second auxiliary ruler 4 and the contact 13, and the contact 13 can be connected with the second auxiliary ruler 4 through the hanging rod 10. When measuring the workpiece 18 to be measured, the reading on the main ruler 1 corresponding to the zero scale of the sliding block 7 is subtracted by the length of the hanging rod 10, and the thickness of the workpiece 18 to be measured at this position can be obtained.

[0051] Further, the end of the second auxiliary ruler 4 close to the first fixed ruler 2 is provided with a first protrusion 5, as shown in the drawings, Figure 7As shown, one end of the hanging rod 10 is provided with a first groove 11 matched with the first protrusion 5, the first protrusion 5 and the first groove 11 are gap matched, the first protrusion 5 can enter the first groove 11, and the matching of the first groove 11 and the first protrusion 5 can enable the hanging rod 10 to be inserted with the second auxiliary ruler 4. Figure 8 As shown, the contact 13 is a conical structure, the bottom surface of the conical contact 13 is provided with a second groove 14, the second protrusion 12 can enter the second groove 14, the second protrusion 12 and the second groove 14 are gap matched, and the matching of the second protrusion 12 and the second groove 14 can enable the contact 13 to be inserted with the hanging rod 10. In this way, the hanging rod 10 can be conveniently replaced.

[0052] Further, the hanging rod 10 includes a plurality of hanging rods 10, the lengths of the plurality of hanging rods 10 are all different, for example, the lengths of the plurality of hanging rods 10 are 0 mm, 5 mm, 10 mm, 15 mm, 20 mm, 25 mm and 30 mm respectively, and when measuring the thickness of a certain position of the workpiece 18, the length of the hanging rod 10 to be used is selected based on the condition that the first auxiliary ruler 3 does not interfere with the workpiece 18.

[0053] Further, as shown, Figure 3 As shown, the device further includes a second fixed ruler 15 and a third auxiliary ruler 16, the second fixed ruler 15 and the third auxiliary ruler 16 are both arranged on the other side of the main ruler 1, the second fixed ruler 15 is fixedly connected with the main ruler 1, one end of the third auxiliary ruler 16 is connected with the sliding block 7, the third auxiliary ruler 16 is slidably connected with the main ruler 1 through the sliding block 7, and the side surface of the third auxiliary ruler 16 close to the second fixed ruler 15 has a certain slope. When measuring the thickness of the middle of the leg of the H-shaped steel or channel steel, the second fixed ruler 15 and the third auxiliary ruler 16 can cooperate to measure the thickness of the tip of the leg of the H-shaped steel or channel steel, and preferably, the first fixed ruler 2, the second fixed ruler 15 and the main ruler 1 are an integral structure, and the first auxiliary ruler 3, the third auxiliary ruler 16 and the sliding block 7 are an integral structure.

[0054] The combination of the first auxiliary ruler 3, the third auxiliary ruler 16 and the sliding block 7 has a plurality of combinations, the slopes of the third auxiliary rulers 16 in each combination are different, and the third auxiliary rulers 16 with different slopes are selected according to the slope of the type steel to be measured. According to the slopes of the third auxiliary rulers 16, the thicknesses of the tips of the legs of type steels of various standards such as GB, BS, EN, ASTM and GOST can be measured, and the thicknesses of the tips of the legs of the type steels and the thicknesses of the roots of the legs of the type steels can be used to calculate the thicknesses of the legs of the type steels. Preferably, the slope of the side surface of the third auxiliary ruler 16 close to the second fixed ruler 15 is one of 1:6, 1:10, 5:100 and 8:100. For example, the third auxiliary ruler 16 with a slope of 1:6 is selected to measure the GB H-shaped steel, and the third auxiliary ruler 16 with a slope of 1:10 is selected to measure the GB channel steel. In this way, the measuring range of the device can cover all types of H-shaped steels and channel steels in GB_T 706-2016 standard.

[0055] Furthermore, such as Figure 6 As shown, a bolt hole is provided at the end of the second auxiliary ruler 4 furthest from the first fixed ruler 2. The fixing bolt 17 passes through the bolt hole and abuts against the first auxiliary ruler 3. Tightening the fixing bolt 17 can fix the relative position of the second auxiliary ruler 4 and the first auxiliary ruler 3. After adjusting the position of the second auxiliary ruler 4, the second auxiliary ruler 4 is fixed by tightening the fixing bolt 17 to prevent the position of the second auxiliary ruler 4 from changing during the measurement process and improve the measurement accuracy.

[0056] The present invention also discloses a method for measuring slope and steel leg thickness using the above-mentioned measuring device, comprising the following steps:

[0057] 1. Measure the workpiece at an 18° angle:

[0058] 1.1 Check the zero position of the device, such as Figure 9 As shown, slide the first auxiliary ruler 3 to the end of the main ruler 1 closest to the first fixed ruler 2 (the leftmost end of the main ruler 1), so that the contact 13 installed on the second auxiliary ruler 4 is in contact with the first fixed ruler 2. Check whether the zero mark of the slider 7 is aligned with the zero mark of the main ruler 1. If they are aligned, perform the measurement work; if they are not aligned, perform the calibration.

[0059] 1.2 Select hanging rod 10. Select a hanging rod 10 of appropriate length based on the principle that the first auxiliary ruler 3 and the workpiece 18 to be measured do not interfere during measurement. Then the measurement dimension of the main ruler 1 = reading of the main ruler 1 - length of hanging rod 10;

[0060] 1.3 Measure the thickness of the workpiece 18 at one location, such as... Figure 9 As shown, first, adjust the second auxiliary ruler 4 to the x position, tighten the fixing bolt 17 to fix the position of the second auxiliary ruler 4, then put the first fixed ruler 2 into contact with the outer wall of the workpiece 18 to be measured, slide the first auxiliary ruler 3 and make the contact 13 contact the inner wall of the workpiece 18. At this time, the reading of the main ruler 1 = b + the length of the hanging rod 10, then the thickness of the workpiece 18 at this position is b.

[0061] 1.4 Measure the thickness of workpiece 18 at another location, such as... Figure 10 As shown, loosen the fixing bolt 17 and adjust the second auxiliary ruler 4 to the y position, then tighten the fixing bolt 17 to fix the position of the second auxiliary ruler 4, slide the first auxiliary ruler 3 and make the contact 13 contact the inner wall of the workpiece 18. At this time, the reading of the main ruler 1 = c + the length of the hanging rod 10, then the thickness of the workpiece 18 at this position is c.

[0062] 1.5 Calculate the slope of workpiece 18. The slope of workpiece 18 = xy / cb.

[0063] 2. Measure the thickness of the legs of the steel section. The steel section is either I-beam or channel steel. Figures 11-12As shown, taking the method of measuring the national standard I-beam as an example for illustration (the slope of the national standard I-beam leg is k=1:6) :

[0064] 2.1 Check the zero position of the device, such as Figure 9 As shown, slide the first auxiliary ruler 3 to the end of the main ruler 1 close to the first fixed ruler 2 (the leftmost end of the main ruler 1), make the contact 13 of the auxiliary ruler adhere to the first fixed ruler 2, check whether the zero scale of the sliding block 7 is aligned with the zero scale of the main ruler 1, if so, proceed with the measurement work, if not, proceed with the calibration;

[0065] 2.2 Measure the thickness t1 of the leg root position of the section steel, first adjust the second auxiliary ruler 4 to the y2 position (the y2 position can be any value within the measurable range), tighten the fixing bolt 17 to fix the position of the second auxiliary ruler 4, then place the leg of the section steel between the first fixed ruler 2 and the first auxiliary ruler 3, make the first fixed ruler 2 adhere to the outer side wall of the leg of the section steel, and the free end of the first auxiliary ruler 3 adhere to the web of the section steel, slide the first auxiliary ruler 3 and make the contact 13 contact the inner side wall of the leg of the section steel, at this time the reading of the main ruler 1=x2+the length of the hanging rod 10, then the thickness of the leg of the section steel at this position is x2, according to the slope formula k=(y1-y2) / (x1-x2), calculate the thickness t1 of the leg root of the section steel, wherein y1=0, k is the slope of the leg of the section steel, x1 is obtained by calculation, and the absolute value of x1 is the thickness t1 of the leg root position of the section steel;

[0066] 2.3 Measure the thickness t2 of the leg tip position of the section steel, select the third auxiliary ruler 16 with the same slope as the leg of the section steel, first place the leg of the section steel between the second fixed ruler 15 and the third auxiliary ruler 16, make the second fixed ruler 15 adhere to the outer side wall of the leg of the section steel, the leg tip of the section steel adhere to the main ruler 1, and the third auxiliary ruler 16 adhere to the inner side wall of the leg of the section steel, the reading on the main ruler is the thickness t2 of the leg tip position of the section steel;

[0067] 2.4 Calculate the middle thickness t of the leg of the section steel, the middle thickness t of the leg of the section steel=(t1+t1) / 2.

[0068] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

[0069] A device and a measuring method for measuring the slope and the leg thickness of the section steel, which can accurately measure the slope of the workpiece 18 and the leg thickness of the I-beam, channel steel and other double-side non-parallel section steel under different standards, and the precision can meet the national standard requirements. The device has the advantages of simple equipment structure, convenient and repeatable use, simple operation, easy popularization, easy learning and low cost.

[0070] The above merely illustrates the preferred embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A device for measuring the slope and the leg thickness of a profiled steel sheet, characterized in that, The device comprises a main ruler, a first fixed ruler, a first auxiliary ruler and a second auxiliary ruler, wherein, The first fixed ruler and the first auxiliary ruler are arranged on one side of the main ruler, one end of the first fixed ruler is connected with one end of the main ruler, and one end of the first auxiliary ruler is slidingly connected with the main ruler; The second auxiliary ruler is slidingly connected with the first auxiliary ruler, one end of the second auxiliary ruler close to the first fixed ruler is connected with a contact head, and the contact head can be attached to the first fixed ruler; The main ruler and the first auxiliary ruler are both provided with scales, The device further comprises a sliding block, the first auxiliary ruler is slidingly connected with the main ruler through the sliding block, and the sliding block is provided with a scale; when the contact head is in contact with the first fixed ruler, the zero scale of the sliding block is aligned with the zero scale of the main ruler, One end of the first auxiliary ruler away from the main ruler is a plane, The side surface of the first fixed ruler close to the first auxiliary ruler is perpendicular to the axis of the main ruler, and the side surface of the first auxiliary ruler close to the first fixed ruler is perpendicular to the axis of the main ruler, The device further comprises a hanging rod, the hanging rod is arranged between the second auxiliary ruler and the contact head, and the contact head can be connected with the second auxiliary ruler through the hanging rod, The hanging rod comprises a plurality of rods, and the lengths of the plurality of rods are different; The device further comprises a second fixed ruler and a third auxiliary ruler, the second fixed ruler and the third auxiliary ruler are arranged on the other side of the main ruler, the second fixed ruler is fixedly connected with the main ruler, one end of the third auxiliary ruler is connected with the sliding block, and the third auxiliary ruler is slidingly connected with the main ruler through the sliding block.

2. The device for measuring slope and leg thickness of profile steel according to claim 1, wherein, The sliding block is provided with a first sliding groove, the sliding block is sleeved on the main ruler through the first sliding groove, and one end of the first auxiliary ruler is connected with the sliding block.

3. The device for measuring slope and leg thickness of profile steel according to claim 1, wherein, The second auxiliary ruler is provided with a second sliding groove, and the second auxiliary ruler is slidingly connected with the first auxiliary ruler through the second sliding groove.

4. The device for measuring slope and leg thickness of profile steel according to claim 1, wherein, One end of the second auxiliary ruler is provided with a first protrusion, one end of the hanging rod is provided with a first groove matched with the first protrusion, the first protrusion can enter the first groove, and the first groove and the first protrusion are matched to enable the hanging rod to be inserted with the second auxiliary ruler.

5. The device for measuring slope and leg thickness of profile steel according to claim 1, wherein, The other end of the hanging rod is provided with a second protrusion, the contact head is in a conical structure, the bottom surface of the conical contact head is provided with a second groove, the second protrusion can enter the second groove, and the second protrusion and the second groove are matched to enable the contact head to be inserted with the hanging rod.

6. The device for measuring slope and leg thickness of profile steel according to claim 1, wherein, The profile steel comprises an I-beam and a channel steel.

7. The device for measuring slope and leg thickness of profile steel according to claim 1, wherein, A bolt hole is arranged at the end of the second auxiliary ruler away from the first fixed ruler, and a fixing bolt can abut against the first auxiliary ruler after passing through the bolt hole, and the relative position of the second auxiliary ruler and the first auxiliary ruler can be fixed by tightening the fixing bolt.

8. The device of claim 1, wherein, The first fixed ruler, the second fixed ruler and the main ruler are in an integrated structure, and the first auxiliary ruler, the third auxiliary ruler and the sliding block are in an integrated structure.

9. The device of claim 1, wherein, The slope of the side surface of the third auxiliary ruler close to the second fixed ruler is one of 1:6, 1:10, 5:100 and 8:

100.

10. A method of measuring using the apparatus for measuring the slope and the leg thickness of a profiled steel sheet as claimed in claim 7, characterized in that, The method comprises the following steps: Step 1, measuring the slope of the workpiece: Step 1.1, checking the zero position of the device, sliding the first auxiliary ruler to the end of the main ruler close to the first fixed ruler, making the contact of the second auxiliary ruler abut against the first fixed ruler, checking whether the zero scale of the sliding block is aligned with the zero scale of the main ruler, if yes, performing the measurement, if not, performing the calibration; Step 1.2, selecting the hanging rod, selecting the appropriate length of the hanging rod according to the principle that the first auxiliary ruler does not interfere with the workpiece to be measured during the measurement, then the measurement size of the main ruler = the reading of the main ruler - the length of the hanging rod; Step 1.3, measuring the thickness of a position of the workpiece to be measured, first adjusting the second auxiliary ruler to the x position, tightening the fixing bolt to fix the position of the second auxiliary ruler, then making the main ruler abut against the outer side wall of the workpiece, sliding the first auxiliary ruler and making the contact abut against the inner side wall of the workpiece, at this time, the reading of the main ruler = b + the length of the hanging rod, then the thickness of the workpiece at this position is b; Step 1.4, measuring the thickness of another position of the workpiece, loosening the fixing bolt and adjusting the second auxiliary ruler to the y position, then tightening the fixing bolt to fix the position of the second auxiliary ruler, sliding the first auxiliary ruler and making the contact abut against the workpiece, at this time, the reading of the main ruler = c + the length of the hanging rod, then the thickness of the workpiece at this position is c; Step 1.5, calculating the slope of the workpiece, the slope of the workpiece = (x-y) / (c-b); Step 2, measuring the leg thickness of the steel profile: Step 2.1, checking the zero position of the device, sliding the first auxiliary ruler to the end of the main ruler close to the first fixed ruler, making the contact of the auxiliary ruler abut against the first fixed ruler, checking whether the zero scale of the sliding block is aligned with the zero scale of the main ruler, if yes, performing the measurement, if not, performing the calibration; Step 2.

2. Measure the thickness t1 of the leg root position of the profile steel: first adjust the second auxiliary ruler to the y2 position, tighten the fixing bolt to fix the position of the second auxiliary ruler, then place the leg of the profile steel between the first fixed ruler and the first auxiliary ruler, make the first fixed ruler fit the outer side wall of the leg of the profile steel, and make the free end of the first auxiliary ruler fit the web of the profile steel, slide the first auxiliary ruler and make the contact touch the inner side wall of the leg of the profile steel, at this time the reading of the main ruler = x2 + the length of the hanging rod, then the thickness of the leg of the profile steel at this position is x2, calculate the thickness t1 of the leg root of the profile steel according to the slope formula k = (y1-y2) / (x1-x2), wherein y1 = 0, k is the slope of the leg of the profile steel, x1 is obtained by calculation, and the absolute value of x1 is the thickness t1 of the leg root position of the profile steel; Step 2.

3. Measure the thickness t2 of the leg tip position of the profile steel, select a third auxiliary ruler with the same slope as the leg of the profile steel, first place the leg of the profile steel between the second fixed ruler and the third auxiliary ruler, make the second fixed ruler fit the outer side wall of the leg of the profile steel, make the leg tip of the profile steel fit the main ruler, and make the third auxiliary ruler fit the inner side wall of the leg of the profile steel, then the reading on the main ruler is the thickness t2 of the leg tip position of the profile steel; Step 2.

4. Calculate the intermediate thickness of the leg of the profile steel, the intermediate thickness size t of the leg of the profile steel = (t1+t2) / 2.

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