CN106123740B - Tool and method for measuring specific height and inner width of forklift gantry channel steel - Google Patents
Tool and method for measuring specific height and inner width of forklift gantry channel steel Download PDFInfo
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- CN106123740B CN106123740B CN201610739362.1A CN201610739362A CN106123740B CN 106123740 B CN106123740 B CN 106123740B CN 201610739362 A CN201610739362 A CN 201610739362A CN 106123740 B CN106123740 B CN 106123740B
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- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
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Abstract
The invention provides a tool and a method for measuring the specific height and the inner width of a forklift gantry channel steel. The measuring tool comprises a first measuring block and a second measuring block: the first measuring block is provided with a first measuring plane for measuring an upper limit value of the inner width of the specific height of the forklift gantry channel steel; and a second measuring plane is arranged on the second measuring block and used for measuring the lower limit value of the specific height and the inner width of the forklift gantry channel steel. The first measuring plane and the second measuring plane are respectively aligned to the measured channel steel web, so that the measuring plate can vertically move to the measured channel steel, and whether the specific height inner width of the portal channel steel is qualified or not can be quickly judged through the contact condition of the height positioning block on the measuring plane and the measured channel steel web or the contact condition of the two side walls and the inner side of the measured channel steel flange, so that the measuring time is shortened, the measuring error is reduced, and the measuring accuracy and the production efficiency are improved.
Description
Technical Field
The invention belongs to the technical field of channel steel size measurement, and particularly relates to a tool and a method for measuring the specific height and the inner width of channel steel of a forklift portal.
Background
Based on the purpose of improving the operation stability of the forklift gantry, a part of high-end forklift enterprises arrange the roller end faces and the channel steel web plates at a certain angle, and the purpose of improving safety and stability is achieved by increasing the contact area of the rollers and the channel steel flanges. The working surface of the roller is contacted with the flange of the channel steel at a specific height above the web plate of the channel steel, and in order to ensure the stable operation of the roller on the flange of the channel steel, the internal width precision of the channel steel at the specific height must be ensured.
In steel production, considering high-temperature working conditions and precision requirements, a vernier caliper is usually adopted for measuring the section steel size, the measurement result of the section steel size is compared with a nominal size, and whether the section steel size meets the standard requirements or not is judged according to an allowable tolerance range.
For the H-shaped steel with regular shape and no inclination on the inner side of the flange, the inner width dimension of the H-shaped steel is measured by a vernier caliper, so that higher measurement precision can be ensured, and the method is a convenient and rapid measuring method for the inner width of the H-shaped steel. The inner side surfaces of the measuring jaws of the vernier caliper are parallel to each other, and the inner side of the flange of the H-shaped steel has no inclination and is two parallel surfaces. When the distance between the two parallel surfaces is measured, the inner side of the measuring jaw of the vernier caliper is abutted against the measuring surface, and an accurate measuring result can be obtained.
For the portal channel steel with the inclination at the inner side of the flange, the internal width at the specific height above the web plate of the portal channel steel cannot be directly measured by the vernier caliper, the height plane can be marked and measured at two sides, and then the internal width is measured by the vernier caliper.
The tool for measuring the width of the channel steel of the hot-rolled forklift gantry comprises a plurality of tools, for example, chinese patent documents, namely, a tool for measuring the width of the channel steel of the hot-rolled forklift gantry, which is named as a tool for measuring the width of the channel steel of the hot-rolled forklift gantry, wherein the application date is 2012, 5 and 25, and the application number is 201220239517.2. But the measuring tool is only limited to measuring portal channel steel with the inner sides of flanges perpendicular to the web and the inner sides of the flanges parallel to each other.
Disclosure of Invention
In order to solve the problem of accurate measurement of the internal width of the specific height of the forklift portal channel steel with the inclination at the inner side of the flange and overcome the defects of the measuring device and the measuring method, the invention provides a measuring tool for the internal width of the specific height of the forklift portal channel steel and a measuring method thereof based on the requirement of measuring the internal width of the specific height of the forklift portal channel steel.
In order to solve the problems, the invention provides a tool and a method for measuring the specific height and the inner width of a channel steel of a forklift gantry, and the technical scheme is as follows:
the utility model provides a wide measuring tool in specific height of fork truck portal channel-section steel, it includes first measuring block and second measuring block: the first measuring block is provided with a first measuring plane, two side walls corresponding to two ends of the first measuring plane are a first side wall of the first measuring plane and a second side wall of the first measuring plane respectively, the first measuring plane is provided with a height positioning block, the length of the first measuring plane is an upper limit value of the internal width of the forklift portal channel steel at a specific height, and the first measuring block is used for measuring the upper limit value of the internal width of the forklift portal channel steel at the specific height; the second measuring block is provided with a second measuring plane, two side walls corresponding to two ends of the second measuring plane are respectively a first side wall of the second measuring plane and a second side wall of the second measuring plane, the second measuring plane is provided with a height positioning block, the length of the second measuring plane is a lower limit value of the inner width of the specific height of the forklift portal channel steel, and the second measuring block is used for measuring the lower limit value of the inner width of the specific height of the forklift portal channel steel.
According to the measuring tool for the specific height and the inner width of the forklift mast channel steel, the following steps are further preferred: the first measuring block and the second measuring block are of an integrated structure.
According to the measuring tool for the specific height and the inner width of the forklift mast channel steel, the following steps are further preferred: the first measuring plane and the second measuring plane are arranged in parallel, the first side wall of the first measuring plane and the second side wall of the first measuring plane respectively form an included angle equal to 90 degrees with the first measuring plane, and the first side wall of the second measuring plane and the second side wall of the second measuring plane respectively form an included angle equal to 90 degrees with the second measuring plane.
According to the measuring tool for the specific height and the inner width of the forklift mast channel steel, the following steps are further preferred: the first measuring block and the second measuring block are both quadrilateral structure blocks.
According to the measuring tool for the specific height and the inner width of the forklift mast channel steel, the following steps are further preferred: the first measuring block is provided with two height positioning blocks which are respectively a first height positioning block and a second height positioning block, the first height positioning block and the second height positioning block have the same structure and are arranged in parallel, and the heights of the first height positioning block and the second height positioning block are the same as the specific height of the forklift gantry channel steel; the second measuring block is provided with two height positioning blocks, namely a third height positioning block and a fourth height positioning block, the third height positioning block and the fourth height positioning block are identical in structure and are arranged in parallel, and the heights of the third height positioning block and the fourth height positioning block are identical to the specific height of the forklift portal channel steel.
According to the measuring tool for the specific height and the inner width of the forklift mast channel steel, the following steps are further preferred: the distance between the first height positioning block and the second height positioning block is the same as the distance between the third height positioning block and the fourth height positioning block.
According to the measuring tool for the specific height and the inner width of the forklift mast channel steel, the following steps are further preferred: the distance between the outer sides of the first height positioning block and the second height positioning block and the adjacent side wall is larger than the inner arc radius of the measured channel steel; and the distance between the outer sides of the third height positioning block and the fourth height positioning block and the adjacent side wall is greater than the inner arc radius of the measured channel steel.
According to the measuring tool for the specific height and the inner width of the forklift mast channel steel, the following steps are further preferred: the thickness of the first measuring block and the thickness of the second measuring block are both 5-15 mm.
According to the measuring tool for the specific height and the inner width of the forklift mast channel steel, the following steps are further preferred: the bottom surface of the vertical scale is a horizontal plane, and the horizontal plane is parallel to a channel steel web plate of the forklift gantry; the first measuring block and the second measuring block are arranged on the vertical scale in a manner of moving up and down along the length direction of the vertical scale, and the first measuring plane and the second measuring plane are parallel to the horizontal plane.
A method for measuring the inner width of a specific height of a forklift portal channel steel comprises the following steps:
step one, enabling the measuring tool to be perpendicular to a web plate and a flange of a measured channel steel at the same time, enabling the first measuring plane to be parallel to the web plate of the channel steel, enabling the first measuring block to move towards the web plate of the measured channel steel, and enabling the specific height inner width of the measured channel steel to be within an upper limit range when a height positioning block on the first measuring plane is not in contact with the web plate of the measured channel steel and a gap exists, or the height positioning block on the first measuring plane is in contact with the web plate of the measured channel steel and a first side wall of the first measuring plane and a second side wall of the first measuring plane are in close contact with the inner side of the flange of the channel steel; when the height positioning block on the first measuring block is in contact with the web plate of the channel steel to be measured and a gap exists between the first side wall of the first measuring plane and the second side wall of the first measuring plane of the first measuring block and the inner side of the flange of the channel steel, the inner width of the specific height of the channel steel to be measured is greater than the upper limit value;
secondly, enabling the second measuring plane to be parallel to the channel steel web plate, enabling the second measuring block to move towards the measured channel steel web plate, and enabling the inner width of the specific height of the measured channel steel to be within the lower limit range when the height positioning block on the second measuring plane is in contact with the measured channel steel web plate and a gap exists between the first side wall of the second measuring plane and the second side wall of the second measuring plane of the second measuring block and the inner side of the flange of the measured channel steel or the height positioning block on the second measuring plane is in contact with the measured channel steel web plate and the first side wall of the second measuring plane and the second side wall of the second measuring block are in close contact with the inner side of the flange of the measured channel steel; and when a gap exists between the height positioning block on the second measuring plane and the web plate of the channel steel to be measured and the first side wall of the second measuring plane and the second side wall of the second measuring plane are in close contact with the inner side of the flange of the channel steel, the specific height inner width of the channel steel to be measured is smaller than the lower limit value.
In summary, when the tool for measuring the internal width of the specific height of the forklift portal channel steel is used for measuring, only the first measuring plane and the second measuring plane need to be parallel to the web plate of the portal channel steel, so that the measuring block is perpendicular to the inner sides of the web plate and the flange of the measured channel steel at the same time, and whether the internal width of the specific height of the portal channel steel is qualified or not can be measured by moving the measuring tool vertically.
Drawings
Fig. 1 is a schematic structural diagram of a tool for measuring the internal width of a specific height of a steel channel of a forklift mast in a preferred embodiment of the invention.
Fig. 2 is a schematic diagram of whether the inner width of the forklift mast channel steel at the specific height exceeds the upper limit or not by the measuring tool for the inner width of the forklift mast channel steel at the specific height according to the preferred embodiment of the invention.
Fig. 3 is a schematic diagram of whether the inner width of the forklift mast channel steel at the specific height exceeds the lower limit or not by the measuring tool for the inner width of the forklift mast channel steel at the specific height according to the preferred embodiment of the invention.
In the figure: 1-a measuring tool; 2-a first measurement plane; 3-a second measurement plane; 4-a second measurement plane first side wall; 5-a second measuring plane second side wall; 6-a first measuring plane first side wall; 7-a first measuring plane second side wall; 8-a first height locating block; 9-a second height positioning block; 10-a third height positioning block; 11-fourth height location block.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, 2 and 3, a tool 1 for measuring the internal width of the forklift portal channel steel at a specific height provided by a preferred embodiment of the invention includes a first measuring block and a second measuring block, wherein the first measuring block is provided with a first measuring plane 2, two side walls corresponding to two ends of the first measuring plane 2 are a first side wall 6 and a second side wall 7 of the first measuring plane respectively, the first measuring block is provided with a height positioning block, the length of the first measuring plane 2 is an upper limit value of the internal width of the forklift portal channel steel at the specific height, and the first measuring block is used for measuring the upper limit value of the internal width of the forklift portal channel steel at the specific height; the second measuring block is provided with a second measuring plane 3, two side walls corresponding to two ends of the second measuring plane 3 are a first side wall 4 of the second measuring plane and a second side wall 5 of the second measuring plane respectively, the second measuring block is provided with a height positioning block, the length of the second measuring plane 3 is a lower limit value of the specific height and the inner width of the forklift portal channel steel, and the second measuring block is used for measuring the lower limit value of the specific height and the inner width of the forklift portal channel steel.
The upper limit value of the inner width of the specific height of the channel steel refers to the sum of the standard value and the upper limit of the dimensional tolerance, and the lower limit value of the inner width of the specific height of the channel steel refers to the difference between the standard value and the lower limit of the dimensional tolerance; in this embodiment, specifically, the specific measurement height of the inner width of the channel steel is 10mm above the web, the standard value of the inner width of the specific height is 115.5mm, and the tolerance is ± 0.5mm, so that the length of the first measurement plane 2 is 115.5+ 0.5-116 mm, and the length of the second measurement plane 3 is 115.5-0.5-115 mm. Hereinafter, "in an upper limit range" means equal to or less than an upper limit value, "in a lower limit range" means equal to or more than a lower limit value, "in an upper limit range" means greater than the upper limit value, and "in an upper limit range" means less than the lower limit value.
In summary, when the internal width of the specific height of the channel steel of the forklift portal is measured, the measuring tool 1 is perpendicular to the web plate and the flange of the channel steel to be measured at the same time, the first measuring plane 2 is parallel to the web plate of the channel steel at first, so that the first measuring block moves towards the web plate of the channel steel to be measured, when a height positioning block on the first measuring plane 2 is not in contact with the web plate of the channel steel to form a gap, or the height positioning block is in contact with the web plate of the channel steel and two side walls 6 and 7 of the measuring block are in close contact with the inner side of the flange of the channel steel, the internal width of the specific height of the channel steel to be measured is within an upper limit range, and if the height positioning block on the first measuring block is in contact with the web plate of the channel steel and gaps are formed between the two; and then, a second measuring plane 3 is parallel to the channel steel web, so that a second measuring block moves towards the measured channel steel web, when a height positioning block on the second measuring plane 3 is in contact with the channel steel web and gaps exist between the two side walls 4 and 5 and the inner side of the channel steel flange, or the height positioning block is in contact with the channel steel web and the two side walls 4 and 5 of the second measuring block are in close contact with the inner side of the channel steel flange, the specific height inner width of the measured channel steel is indicated to be within a lower limit range, and if the height positioning block on the second measuring block is in gap with the measured channel steel web and the two side walls 4 and 5 are in close contact with the inner side of the channel steel flange, the specific height inner width of the measured channel steel is indicated to be. The method and the device realize the rapid judgment of whether the inner width of the specific height of the forklift gantry channel steel is qualified or not, thereby reducing the measurement time, reducing the measurement error and improving the measurement precision and efficiency.
In the invention, the first measuring block and the second measuring block are of an integral structure, namely the first measuring plane 2 and the second measuring plane 3 are both arranged on the measuring tool 1, so that the structure of the invention is simpler and the processing and the manufacturing are convenient. Of course, the first measuring block and the second measuring block may also be of a split structure, i.e. the first measuring plane 2 and the second measuring plane 3 may also be separately arranged on two separate measuring blocks.
For convenience of operation, the first measuring block and the second measuring block are of an integral structure. According to the invention, after the inner width of the specific height of the channel steel is measured to be over the upper limit, the measuring tool 1 is rotated by 180 degrees, and then the other measuring plane is vertically contacted with the flange and the web plate of the measured channel steel, so that whether the inner side of the flange of the channel steel is over the upper limit can be measured.
In order to facilitate accurate machining, increase the dimensional accuracy and thus the accuracy of the measurement, the first measuring plane 2 and the second measuring plane 3 of the present invention are preferably parallel to each other. Alternatively, the measuring tool 1 of the present invention may take other shapes as long as it has corresponding measuring planes, side walls and height positioning blocks to enable measurement. The first measuring plane first side wall 6 and the first measuring plane second side wall 7 form an angle of less than or equal to 90 ° with the first measuring plane 2, respectively, the second measuring plane first side wall 4 and the second measuring plane second side wall 5 form an angle of less than or equal to 90 ° with the second measuring plane 3, respectively, preferably both angles are equal to 90 °.
As shown in fig. 1, the first measuring block and the second measuring block of the measuring tool 1 are both quadrilateral blocks, and preferably, the measuring tool including the first measuring block and the second measuring block which are integrated is a quadrilateral block. The measuring tool with the shape is convenient to carry and convenient for operators to measure. Two long edges of the quadrilateral structure block are parallel to the web, and the first measuring plane and the second measuring plane are two parallel long edges on the quadrilateral structure block.
In order to ensure accurate measurement, as shown in fig. 1, 2 and 3, the first measuring block is provided with two height positioning blocks, namely a first height positioning block 8 and a second height positioning block 9, and the first height positioning block 8 and the second height positioning block 9 have the same structure and are arranged in parallel; namely, the first height positioning block 8 and the second height positioning block 9 are on the same horizontal line. The second measuring block is provided with two height positioning blocks, namely a third height positioning block 10 and a fourth height positioning block 11, wherein the third height positioning block 10 and the fourth height positioning block 11 have the same structure and are arranged in parallel; namely, the third height positioning block 10 and the fourth height positioning block 11 are on the same horizontal line. Preferably, the distance between the first height positioning block 8 and the second height positioning block 9 is the same as the distance between the third height positioning block 10 and the fourth height positioning block 11. Further preferably, the distance between the outer sides of the first height positioning block 8 and the second height positioning block 9 and the adjacent side walls is greater than the inner arc radius of the channel steel to be measured, as shown in fig. 1, that is, the distance between the first height positioning block 8 and the first side wall 6 of the first measuring plane is greater than the inner arc radius of the channel steel to be measured, and similarly, the distance between the second height positioning block 9 and the second side wall 7 of the first measuring plane is greater than the inner arc radius of the channel steel to be measured, so that the bottom of the height positioning block is parallel to the web of the channel steel. Certainly, the distance between the outer sides of the third height positioning block 10 and the fourth height positioning block 11 and the adjacent side walls is greater than the inner arc radius of the channel steel to be measured, as shown in fig. 1, that is, the distance between the third height positioning block 10 and the first side wall 4 of the second measuring plane is greater than the inner arc radius of the channel steel to be measured, and similarly, the distance between the fourth height positioning block 11 and the second side wall 5 of the second measuring plane is greater than the inner arc radius of the channel steel to be measured, so that the bottoms of the height positioning blocks are kept parallel to the web of the channel steel. The first height positioning block 8, the second height positioning block 9, the third height positioning block 10 and the fourth height positioning block 11 are the same in height and are specific heights required by the measured internal width of the forklift gantry channel steel. In the present invention, the first height positioning block 8 and the second height positioning block 9 are disposed perpendicular to the first measuring plane, and the third height positioning block 10 and the fourth height positioning block 11 are disposed perpendicular to the second measuring plane. The free surfaces (the surfaces opposite to the connecting surface connected with the first measuring plane) of the first height positioning block 8 and the second height positioning block 9 are parallel to the first measuring plane 2, and the free surfaces (the surfaces opposite to the connecting surface connected with the first measuring plane) of the third height positioning block 10 and the fourth height positioning block 11 are parallel to the second measuring plane 3, so that when the height positioning blocks are in contact with the web, whether the first measuring plane and the second measuring plane are parallel to the web is judged.
For further optimizing above-mentioned technical scheme, measuring tool 1's first measuring block and second measuring block thickness are 5 ~ 15mm, and the preferred thickness that includes the measuring tool of the first measuring block and the second measuring block of structure as an organic whole is 5 ~ 15 mm. Therefore, the measuring tool 1 can be stably placed during measurement, and the measuring accuracy is improved.
In order to do benefit to when first measuring block removes to being surveyed the channel-section steel web, control first measuring plane 2 and be on a parallel with the channel-section steel web, when second measuring block removes to being surveyed the channel-section steel web, control second measuring plane 3 and be on a parallel with the channel-section steel web, measuring tool still includes: the bottom surface of the vertical scale is a horizontal plane which is parallel to a steel web of a forklift gantry channel; first measuring block and second measuring block set up on vertical scale along vertical scale's length direction with reciprocating, and first measuring plane and second measuring plane are parallel with the horizontal plane. During the measurement, the top surface contacts with fork truck portal channel-section steel web, and first measuring block or second measuring block reciprocate on vertical scale along the length direction of vertical scale, can guarantee to remove the in-process first measuring plane or second measuring plane and be on a parallel with the channel-section steel web. When first measuring block and second measuring block structure as an organic whole, owing to can be through the measurement that realizes first measuring block and second measuring block with measuring tool rotation 180 degrees, corresponding, the top surface and the bottom surface of vertical scale are the horizontal plane.
The invention also provides a measuring method, which adopts the measuring tool and comprises the following specific steps:
step one, the measuring tool 1 is perpendicular to a web plate and a flange of a measured channel steel at the same time, a first measuring plane 2 is parallel to the web plate of the channel steel, so that a first measuring block moves towards the web plate of the measured channel steel, and when two height positioning blocks 8 and 9 on the first measuring plane 2 are not in contact with the web plate of the measured channel steel and a gap exists, or the height positioning blocks 8 and 9 on the first measuring plane 2 are in contact with the web plate of the measured channel steel and two side walls 6 and 7 of the first measuring block are in close contact with the inner side of the flange of the measured channel steel, the inner width of the specific height of the measured channel steel is within an upper limit range; when the height positioning blocks 8 and 9 on the first measuring block are in contact with the web plate of the channel steel to be measured and gaps exist between the two side walls 6 and 7 of the first measuring block and the inner side of the flange of the channel steel to be measured, namely the inner width of the channel steel to be measured at a specific height exceeds the upper limit;
step two, enabling a second measuring plane 3 to be parallel to the channel steel web plate, enabling a second measuring block to move towards the measured channel steel web plate, and when two height positioning blocks 10 and 11 on the second measuring plane 3 are in contact with the measured channel steel web plate and gaps exist between two side walls 4 and 5 of the second measuring block and the inner side of the measured channel steel web plate, or the height positioning blocks 10 and 11 on the second measuring plane 3 are in contact with the measured channel steel web plate and the two side walls 4 and 5 of the second measuring block are in close contact with the inner side of the measured channel steel web plate, namely the inner width of the specific height of the measured channel steel is within the lower limit range; when gaps exist between the height positioning blocks 10 and 11 on the second measuring block and the measured channel steel web plate and the two side walls 4 and 5 are in close contact with the inner side of the flange of the measured channel steel, the inner width of the measured channel steel at the specific height exceeds the lower limit.
According to the method, when two height positioning blocks 8 and 9 on a first measuring plane 2 are not in contact with a measured channel steel web plate to form a gap, or the two height positioning blocks 8 and 9 on the first measuring plane 2 are in contact with the measured channel steel web plate and two side walls 6 and 7 of the first measuring block are in close contact with the inner side of a measured channel steel flange, and simultaneously when two height positioning blocks 10 and 11 on a second measuring plane 3 are in contact with the measured channel steel web plate and two side walls 4 and 5 of the second measuring block are in close contact with the inner side of the measured channel steel flange, or the two height positioning blocks 10 and 11 on the second measuring plane 3 are in contact with the measured channel steel web plate and two side walls 4 and 5 of the second measuring block are in close contact with the inner side of the channel steel flange, the specific height inner width of the measured channel steel is measured and meets the requirement, and the portal channel steel is judged to be a qualified product; if the two height positioning blocks 8 and 9 on the first measuring block are in contact with the web plate of the channel steel to be measured and gaps exist between the two side walls 6 and 7 of the first measuring block and the inner side of the flange of the channel steel to be measured, the inner width of the channel steel to be measured at a specific height exceeds the upper limit, and the channel steel product of the portal frame is judged to be an unqualified product; if gaps exist between the two height positioning blocks 10 and 11 on the second measuring block and the web plate of the measured channel steel and the two side walls 4 and 5 of the second measuring block are in close contact with the inner side of the flange of the measured channel steel, the inner width of the measured channel steel at a specific height exceeds the lower limit, and the portal channel steel product is judged to be an unqualified product.
In conclusion, when the tool for measuring the internal width of the specific height of the steel channel of the forklift portal provided by the invention is used for measuring, only the first measuring plane 2 and the second measuring plane 3 are required to be parallel to the web plate of the steel channel of the portal, so that the measuring block 1 is perpendicular to the web plate and the inner side of the flange of the measured steel channel at the same time, and whether the internal width of the steel channel of the portal is qualified or not can be measured by vertically moving the measuring tool.
The tool for measuring the internal width of the specific height of the forklift portal channel steel has the advantages of dimensional accuracy, difficulty in deformation and easiness in carrying, and is suitable for online measurement and offline measurement; and other high-precision measuring tools are not needed in the measurement, so that the method is completely suitable for the requirement of industrial continuous production.
It will be appreciated by those skilled in the art that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The embodiments disclosed above are therefore to be considered in all respects as illustrative and not restrictive. All changes which come within the scope of or equivalence to the invention are intended to be embraced therein.
Claims (3)
1. The utility model provides a wide measuring tool in specific height of fork truck portal channel-section steel which characterized in that, includes first measuring block and second measuring block:
the first measuring block is provided with a first measuring plane, two side walls corresponding to two ends of the first measuring plane are a first side wall of the first measuring plane and a second side wall of the first measuring plane respectively, the first measuring plane is provided with a height positioning block, the length of the first measuring plane is an upper limit value of the internal width of the forklift portal channel steel at a specific height, and the first measuring block is used for measuring the upper limit value of the internal width of the forklift portal channel steel at the specific height;
a second measuring plane is arranged on the second measuring block, two side walls corresponding to two ends of the second measuring plane are a first side wall of the second measuring plane and a second side wall of the second measuring plane respectively, a height positioning block is arranged on the second measuring plane, the length of the second measuring plane is a lower limit value of the internal width of the specific height of the forklift portal channel steel, and the second measuring block is used for measuring the lower limit value of the internal width of the specific height of the forklift portal channel steel;
the first measuring block and the second measuring block are of an integrated structure;
the first measuring plane and the second measuring plane are arranged in parallel, an included angle formed by a first side wall of the first measuring plane and a second side wall of the first measuring plane and the first measuring plane is equal to 90 degrees, and an included angle formed by the first side wall of the second measuring plane and the second measuring plane is equal to 90 degrees;
the first measuring block and the second measuring block are both quadrilateral structure blocks;
the first measuring block is provided with two height positioning blocks which are respectively a first height positioning block and a second height positioning block, the first height positioning block and the second height positioning block have the same structure and are arranged in parallel, and the heights of the first height positioning block and the second height positioning block are the same as the specific height of the forklift gantry channel steel;
the second measuring block is provided with two height positioning blocks, namely a third height positioning block and a fourth height positioning block, the third height positioning block and the fourth height positioning block are identical in structure and are arranged in parallel, and the heights of the third height positioning block and the fourth height positioning block are identical to the specific height of the forklift portal channel steel;
the distance between the first height positioning block and the second height positioning block is the same as the distance between the third height positioning block and the fourth height positioning block;
the distance between the outer sides of the first height positioning block and the second height positioning block and the adjacent side wall is larger than the inner arc radius of the measured channel steel;
the distance between the outer sides of the third height positioning block and the fourth height positioning block and the adjacent side wall is larger than the inner arc radius of the measured channel steel;
further comprising:
the bottom surface of the vertical scale is a horizontal plane, and the horizontal plane is parallel to a steel web plate of the forklift gantry channel;
the first measuring block and the second measuring block are arranged on the vertical scale in a manner of moving up and down along the length direction of the vertical scale, and the first measuring plane and the second measuring plane are parallel to the horizontal plane.
2. The tool for measuring the specific height and the inner width of the forklift gantry channel steel according to claim 1, is characterized in that:
the thickness of the first measuring block and the thickness of the second measuring block are both 5-15 mm.
3. A method for measuring the internal width of a specific height of a forklift portal channel steel is characterized by comprising the following steps:
firstly, the measuring tool of claim 1 or 2 is perpendicular to a web and a flange of a measured channel steel at the same time, the first measuring plane is parallel to the web of the channel steel, the first measuring block moves towards the web of the measured channel steel, and when a height positioning block on the first measuring plane is not in contact with the web of the measured channel steel and a gap exists, or the height positioning block on the first measuring plane is in contact with the web of the measured channel steel and a first side wall of the first measuring plane and a second side wall of the first measuring plane of the first measuring block are in close contact with the inner side of the flange of the channel steel, the inner width of the measured channel steel at a specific height is within an upper limit range; when the height positioning block on the first measuring block is in contact with the web plate of the channel steel to be measured and a gap exists between the first side wall of the first measuring plane and the second side wall of the first measuring plane of the first measuring block and the inner side of the flange of the channel steel, the inner width of the specific height of the channel steel to be measured is greater than the upper limit value;
secondly, enabling the second measuring plane to be parallel to the channel steel web plate, enabling the second measuring block to move towards the measured channel steel web plate, and enabling the inner width of the specific height of the measured channel steel to be within the lower limit range when the height positioning block on the second measuring plane is in contact with the measured channel steel web plate and a gap exists between the first side wall of the second measuring plane and the second side wall of the second measuring plane of the second measuring block and the inner side of the flange of the measured channel steel or the height positioning block on the second measuring plane is in contact with the measured channel steel web plate and the first side wall of the second measuring plane and the second side wall of the second measuring block are in close contact with the inner side of the flange of the measured channel steel; and when a gap exists between the height positioning block on the second measuring plane and the web plate of the channel steel to be measured and the first side wall of the second measuring plane and the second side wall of the second measuring plane are in close contact with the inner side of the flange of the channel steel, the specific height inner width of the channel steel to be measured is smaller than the lower limit value.
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| CN201610739362.1A CN106123740B (en) | 2016-08-26 | 2016-08-26 | Tool and method for measuring specific height and inner width of forklift gantry channel steel |
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| CN106123740B true CN106123740B (en) | 2020-01-07 |
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| CN111637813B (en) * | 2020-06-09 | 2021-03-19 | 东风汽车集团有限公司 | Design method and detection method of detection tool for butterfly-shaped gasket of differential |
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| CN106123740A (en) | 2016-11-16 |
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