CN106123740B - A tool for measuring the inner width of a channel steel at a specific height of a forklift gantry and its measuring method - Google Patents

Abstract

The invention provides a specific height and inner width measuring tool for a channel steel of a forklift gantry and a measuring method thereof. The measuring tool includes a first measuring block and a second measuring block: a first measuring plane is arranged on the first measuring block, which is used to measure the upper limit value of the inner width of the channel steel of the forklift mast at a specific height; The measuring block is provided with a second measuring plane, which is used to measure the lower limit value of the inner width of the channel steel of the forklift mast at a specific height. Align the first measurement plane and the second measurement plane with the measured channel steel web respectively, make the measuring plate move vertically to the measured channel steel, and pass the height positioning block on the measurement plane and the measured channel steel web or both side walls. The contact with the inner side of the measured channel flange can quickly determine whether the specific height and inner width of the gantry channel are qualified, thereby reducing the measurement time and measurement error, thereby improving the measurement accuracy and production efficiency.

Description

A tool for measuring the inner width of a channel steel at a specific height of a forklift gantry and its measuring method

technical field

The invention belongs to the technical field of channel steel dimension measurement, in particular, the invention relates to a specific height and inner width measurement tool of a channel steel of a forklift gantry and a measurement method thereof.

Background technique

For the purpose of improving the operation stability of the forklift gantry, some high-end forklift companies arrange the end face of the roller and the channel steel web at a certain angle. By increasing the contact area between the roller and the channel steel flange, the purpose of improving safety and stability is achieved. . The working surface of the roller is in contact with the channel steel flange at a specific height above the channel steel web. In order to ensure the stable operation of the roller on the channel steel flange, the inner width accuracy of the channel steel specific height must be guaranteed.

In steel production, considering the high temperature working conditions and accuracy requirements, vernier calipers are usually used to measure the size of the steel. The measurement results of the size of the steel are compared with the nominal size, and the allowable tolerance range is used to judge whether the size of the steel meets the standard requirements.

For H-beams with regular shapes and no slope on the inner side of the flanges, the use of vernier calipers to measure the inner width can ensure high measurement accuracy, which is a convenient and quick method for measuring the inner width of steel. This is because the inner sides of the measuring claws of the vernier caliper are parallel to each other, and the inner side of the flange of the H-beam has no slope and is two parallel surfaces. When measuring the distance between two parallel surfaces, the accurate measurement result can be obtained when the inner side of the vernier caliper claw is close to the measuring surface.

For the gantry channel steel with slope on the inner side of the flange, the inner width of the specific height above the web cannot be directly measured by the vernier caliper. You can mark the measuring height plane on both sides first, and then use the vernier caliper to measure the inner width. The use of this method is subject to artificial reasons. There are errors in the marking of the measuring height plane and the measurement of the vernier caliper, which can easily lead to distortion of the measurement data.

There are many tools for measuring the channel width of hot-rolled forklift gantry. For example, the application date is May 25, 2012, and the application number is 201220239517.2. According to the Chinese patent document, the measuring tool includes two measuring bodies corresponding to the groove width, and the widths of the two measuring bodies are respectively the upper and lower limits of the groove width. However, this measuring tool is only limited to measuring the gantry channel where the inner side of the flange is perpendicular to the web and the inner sides of the two flanges are parallel to each other.

SUMMARY OF THE INVENTION

In order to solve the accurate measurement of the inner width of the channel steel at a specific height of a forklift gantry with a slope on the inner side of the flange, and overcome the defects of the above-mentioned measuring device and measurement method, the present invention starts from the requirements for measuring the inner width of the channel steel of the forklift gantry at a specific height at a specific height, Provided are a specific height and inner width measurement tool and a measurement method for a channel steel of a forklift gantry.

In order to solve the above problems, the present invention provides a specific height inner width measuring tool and a measuring method for the channel steel of a forklift gantry, and its technical scheme is as follows:

A tool for measuring the inner width of a channel steel at a specific height of a forklift gantry, comprising a first measuring block and a second measuring block: a first measuring plane is arranged on the first measuring block, and two ends of the first measuring plane are connected with each other. The corresponding two side walls are respectively the first side wall of the first measurement plane and the second side wall of the first measurement plane, a height positioning block is installed on the first measurement plane, and the length of the first measurement plane is the forklift gantry. The upper limit value of the inner width of the channel steel at a specific height, and the first measurement block is used to measure the upper limit value of the inner width of the channel steel at a specific height of the forklift gantry; a second measurement plane is arranged on the second measurement block, and The two side walls corresponding to both ends of the second measurement plane are the first side wall of the second measurement plane and the second side wall of the second measurement plane, respectively, and a height positioning block is installed on the second measurement plane, and the second measurement plane is The length of the measurement plane is the lower limit value of the inner width of the channel steel of the forklift gantry at the specific height, and the second measurement block is used to measure the lower limit of the inner width of the channel steel of the forklift gantry at the specific height.

As described above, the tool for measuring the inner width of a channel steel at a specific height of a forklift gantry is further preferably: the first measuring block and the second measuring block are integral structures.

The above-mentioned tool for measuring the inner width of a channel steel at a specific height of a forklift gantry is further preferably: the first measurement plane and the second measurement plane are arranged parallel to each other, and the first side wall of the first measurement plane and the first measurement plane are parallel to each other. The angle formed by the second side wall of the measurement plane and the first measurement plane is equal to 90°, and the first side wall of the second measurement plane and the second side wall of the second measurement plane are respectively formed with the second measurement plane. The included angle is equal to 90°.

According to the above-mentioned tool for measuring the inner width of a channel steel at a specific height of a forklift gantry, it is further preferred that: the first measuring block and the second measuring block are both quadrilateral structural blocks.

As the above-mentioned tool for measuring the inner width of a channel steel at a specific height of a forklift gantry, it is further preferred that two height positioning blocks are installed on the first measuring block, which are a first height positioning block and a second height positioning block, respectively, The first height positioning block and the second height positioning block have the same structure and are arranged in parallel to each other, and the heights of the first height positioning block and the second height positioning block are the same as the specific height of the channel steel of the forklift mast; The second measuring block is equipped with two height positioning blocks, which are a third height positioning block and a fourth height positioning block, respectively. The third height positioning block and the fourth height positioning block have the same structure and are mutually exclusive. Set in parallel, the heights of the third height positioning block and the fourth height positioning block are the same as the specific height of the channel steel of the forklift gantry.

The above-mentioned tool for measuring the inner width of a channel steel at a specific height of a forklift gantry is further preferably: the distance between the first height positioning block and the second height positioning block and the third height positioning block and the fourth height positioning block The spacing of the positioning blocks is the same.

The above-mentioned tool for measuring the inner width of a channel steel at a specific height of a forklift gantry is further preferably: the distance between the outer sides of the first height positioning block and the second height positioning block and the adjacent side walls is greater than the inner circle of the channel steel to be measured. Arc radius; the distance between the outer side 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 channel steel to be tested.

According to the above-mentioned tool for measuring the inner width of a channel steel at a specific height of a forklift gantry, it is further preferable that the thicknesses of the first measuring block and the second measuring block are both 5-15 mm.

The above-mentioned tool for measuring the inner width of a channel steel at a specific height of a forklift gantry is further preferably: further comprising a vertical ruler, the bottom surface of the vertical ruler is a horizontal plane, and the horizontal plane is parallel to the web of the channel steel of the forklift gantry; The first measurement block and the second measurement block are arranged on the vertical scale to move up and down along the length direction of the vertical scale, and the first measurement plane and the second measurement plane are connected to the vertical scale. The horizontal planes are parallel.

A method for measuring the inner width of a channel steel at a specific height of a forklift gantry, comprising:

Step 1. Make the above-mentioned measuring tool perpendicular to the web and flange of the channel steel to be measured at the same time, and make the first measurement plane parallel to the channel steel web, so that the first measurement block is directed to the measured channel steel web. When the height positioning block on the first measurement plane is not in contact with the measured channel steel web, there is a gap, or the height positioning block on the first measurement plane is in contact with the measured channel steel web and the When the first side wall of the first measurement plane and the second side wall of the first measurement plane of a measuring block are in close contact with 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 within the upper limit range; A height positioning block on the measuring block is in contact with the measured channel steel web and there is a gap 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 channel flange, then The specific height and inner width of the measured channel steel are greater than the upper limit;

Step 2. Make the second measurement plane parallel to the channel steel web, and move the second measurement block to the measured channel steel web. When the height positioning block on the second measurement plane is in line with the measured channel steel The web is in contact and there is a gap between the first side wall of the second measurement plane of the second measurement block and the second side wall of the second measurement plane and the inner side of the channel flange to be measured, or the height on the second measurement plane When the positioning block is in contact with the measured channel steel web and the first side wall of the second measurement plane of the second measurement block and the second side wall of the second measurement plane are in close contact with the inner side of the measured channel steel flange, the measured channel steel is in close contact. The inner width of the specific height is within the lower limit range; when there is a gap between the height positioning block on the second measurement plane and the measured channel steel web and the first side wall of the second measurement plane and the second side wall of the second measurement plane are the same as When the inner side of the channel steel flange is in close contact, the specific height and inner width of the measured channel steel are smaller than the lower limit.

To sum up, when measuring the inner width of the forklift gantry channel steel at a specific height, the first measurement plane and the second measurement plane only need to be parallel to the gantry channel steel web, so that the measuring block is perpendicular to the On the inner side of the web and flange of the channel steel to be measured, the measuring tool can be moved vertically to measure whether the inner width of the channel steel of the door frame is qualified at a specific height. The measurement method is simple and fast, which reduces the measurement time and the measurement error, thereby improving measurement accuracy and production efficiency.

Description of drawings

FIG. 1 is a schematic structural diagram of a tool for measuring the inner width of a channel steel at a specific height of a forklift gantry according to a preferred embodiment of the present invention.

FIG. 2 is a schematic diagram of measuring whether the inner width of a channel steel at a specific height of a channel steel exceeds an upper limit by a tool for measuring the inner width of a channel steel at a specific height of a forklift gantry according to a preferred embodiment of the present invention.

FIG. 3 is a schematic diagram of measuring whether the inner width of a channel steel at a specific height of a channel steel exceeds a lower limit by a tool for measuring the inner width of a channel steel at a specific height of a forklift gantry according to a preferred embodiment of the present invention.

In the figure: 1-measurement tool; 2-first measurement plane; 3-second measurement plane; 4-first sidewall of the second measurement plane; 5-second sidewall of the second measurement plane; 6-first measurement plane The first side wall; 7- the second side wall of the first measurement plane; 8- the first height positioning block; 9- the second height positioning block; 10- the third height positioning block; 11- the fourth height positioning block.

Detailed ways

The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

As shown in Fig. 1, Fig. 2 and Fig. 3, a tool 1 for measuring the inner width of a channel steel at a specific height of a forklift gantry provided by a preferred embodiment of the present invention includes a first measuring block and a second measuring block, and the first measuring block is provided with The first measurement plane 2, the two side walls corresponding to the two ends of the first measurement plane 2 are respectively the first side wall 6 of the first measurement plane and the second side wall 7 of the first measurement plane, and a height positioning is installed on the first measurement block. block, the length of the first measurement plane 2 is the upper limit value of the inner width of the channel steel of the forklift mast at a specific height, and the first measurement block is used to measure the upper limit value of the inner width of the channel steel of the forklift mast at a specific height; in the second measurement block There is a second measurement plane 3 on it, and the two side walls corresponding to the two ends of the second measurement plane 3 are the first side wall 4 of the second measurement plane and the second side wall 5 of the second measurement plane respectively. There is a height positioning block, the length of the second measuring plane 3 is the lower limit value of the inner width of the channel steel of the forklift mast at a specific height, and the second measuring block is used to measure the lower limit value of the inner width of the channel steel of the forklift mast at a specific height.

It should be noted that the upper limit 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 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; 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, then the length of the first measurement plane 2 is 115.5+0.5=116mm, The length of the second measuring plane 3 is 115.5-0.5=115 mm. The following "within the upper limit" refers to less than or equal to the upper limit, "within the lower limit" refers to greater than or equal to the lower limit, "exceeding the upper limit" refers to greater than the upper limit, and "exceeding the lower limit" refers to is less than the lower limit.

All in all, when measuring the inner width of the channel steel of the forklift gantry at a specific height, the measuring tool 1 of the present invention is perpendicular to the web and flange of the channel steel to be measured at the same time, and firstly, the first measurement plane 2 is parallel to the channel steel web. When the height positioning block on the first measurement plane 2 is not in contact with the channel steel web, there is a gap, or the height positioning block is in contact with the channel steel web and the measuring block When the two side walls 6 and 7 are in close contact with the inner side of the channel steel flange, it means that the specific height inner width of the measured channel steel is within the upper limit range, if the height positioning block on the first measurement block is in contact with the channel steel web and the two There is a gap between the side walls 6, 7 and the inner side of the channel steel flange, indicating that the specific height of the measured channel steel exceeds the upper limit; then the second measurement plane 3 is parallel to the channel steel web, so that the second measurement block is directed to the measured channel. When the channel steel web moves, when the height positioning block on the second measurement plane 3 is in contact with the channel steel web and there is a gap 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 when 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, it means that the specific height of the measured channel steel is within the lower limit. When there is a gap in the channel steel web and the two side walls 4 and 5 are in close contact with the inner side of the channel steel flange, it means that the specific height of the measured channel steel exceeds the lower limit. The invention realizes the rapid determination of whether the inner width of the channel steel at the specific height of the forklift gantry is qualified, thereby reducing the measuring time, reducing the measuring error, and improving the measuring precision and efficiency.

In the present invention, the first measuring block and the second measuring block are integral structures, that is, the first measuring plane 2 and the second measuring plane 3 are both on the measuring tool 1, so that the structure of the present invention is relatively simple, and it is convenient for processing and manufacturing . Of course, the first measurement block and the second measurement block may also be of a split structure, that is, the first measurement plane 2 and the second measurement plane 3 may also be separately provided on two independent measurement blocks.

For ease of operation, the first measuring block and the second measuring block of the present invention are integrally constructed. In the present invention, after measuring whether the inner width of the specific height of the channel steel exceeds the upper limit, after rotating the measuring tool 1 by 180 degrees, the other measuring plane is vertically contacted with the flange and the web of the channel steel to be measured, so that the inner side of the channel steel flange can be measured. Whether the upper limit is exceeded.

In order to facilitate precise processing, improve dimensional accuracy, and further improve measurement accuracy, the first measurement plane 2 and the second measurement plane 3 of the present invention are preferably parallel to each other. Alternatively, the measuring tool 1 of the present invention can also take other shapes, as long as it has a corresponding measuring plane, a side wall and a height positioning block to be able to measure. The angle formed by the first side wall 6 of the first measurement plane and the second side wall 7 of the first measurement plane respectively and the first measurement plane 2 is less than or equal to 90°, and the first side wall 4 of the second measurement plane and the second measurement plane The included angles formed by the two side walls 5 and the second measurement plane 3 respectively are less than or equal to 90°, preferably, the aforementioned two angles are both 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 structural blocks, and preferably the measuring tool including the first measuring block and the second measuring block of an integral structure has a quadrilateral structure. The shape of the measuring tool is easy to carry, and the operator can measure. The two long sides of the quadrilateral structural block are parallel to the web, and the first measurement plane and the second measurement plane are two parallel long sides on the quadrilateral structural block.

In order to ensure accurate measurement, as shown in Figure 1, Figure 2 and Figure 3, the present invention is equipped with two height positioning blocks on the first measurement block, which are the first height positioning block 8 and the second height positioning block 9, respectively. A height positioning block 8 and a second height positioning block 9 have the same structure and are arranged parallel to each other; that is, the first height positioning block 8 and the second height positioning block 9 are on the same horizontal line. In the present invention, two height positioning blocks are installed on the second measuring block, which are the third height positioning block 10 and the fourth height positioning block 11 respectively. The third height positioning block 10 and the fourth height positioning block 11 have the same structure and are parallel to each other. Set; that is, 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 side of the first height positioning block 8 and the second height positioning block 9 of the present invention and the adjacent side wall is greater than the inner arc radius of the channel steel to be tested, as shown in FIG. 1, that is, the first height positioning block. The distance between the block 8 and the first side wall 6 of the first measurement plane is greater than the radius of the inner arc of the channel steel to be measured. Similarly, the distance between the second height positioning block 9 and the second side wall 7 of the first measurement plane is greater than that of the measured channel. Measure the inner arc radius of the channel steel, so that the bottom of the height positioning block can be kept parallel to the channel steel web. Of course, the distance between the outside of the third height positioning block 10 and the fourth height positioning block 11 of the present invention and the adjacent side walls is greater than the inner arc radius of the channel steel to be tested, as shown in FIG. 1 , that is, the third height positioning block 10 and the The distance between the first side wall 4 of the second measurement 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 measurement plane is greater than that of the channel steel to be measured. The inner arc radius is convenient to keep the bottom of each height positioning block parallel to the channel steel web. The heights of 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, which are the specific heights required for the inner width of the channel steel of the forklift mast to be measured. In the present invention, the first height positioning block 8 and the second height positioning block 9 are vertically arranged with the first measurement plane, and the third height positioning block 10 and the fourth height positioning block 11 are vertically arranged with the second measurement plane. The free surfaces of the first height positioning block 8 and the second height positioning block 9 (the surface opposite to the connecting surface connected to the first measurement plane) are parallel to the first measurement plane 2, and the third height positioning block 10 and the fourth height positioning block The free surface of the block 11 (the surface opposite to the connecting surface connected to the first measurement plane) is parallel to the second measurement plane 3, which is beneficial to determine the first measurement plane and the second measurement plane when the height positioning block is in contact with the web Is it parallel to the web.

In order to further optimize the above technical solution, the thickness of the first measuring block and the second measuring block of the measuring tool 1 are both 5-15 mm, and preferably the thickness of the measuring tool including the first measuring block and the second measuring block of an integrated structure is 5-15 mm. 15mm. In this way, it can be ensured that the measurement tool 1 is placed stably during measurement, and the measurement accuracy can be improved.

In order to facilitate the movement of the first measuring block to the measured channel steel web, control the first measuring plane 2 to be parallel to the channel steel web, and control the second measuring plane 3 to be parallel when the second measuring block moves to the measured channel steel web For the channel steel web, the measuring tool also includes: a vertical scale whose bottom surface is a horizontal plane, and the horizontal plane is parallel to the channel steel web of the forklift mast; the first measuring block and the second measuring block move up and down along the length direction of the vertical scale. It is arranged on a vertical scale, and the first measurement plane and the second measurement plane are parallel to the horizontal plane. When measuring, the top surface is in contact with the channel steel web of the forklift gantry, and the first measuring block or the second measuring block moves up and down on the vertical scale along the length direction of the vertical scale, which can ensure that the first measuring plane or The second measurement plane is parallel to the channel web. When the first measuring block and the second measuring block are integral structures, since the measurement of the first measuring block and the second measuring block can be realized by rotating the measuring tool 180 degrees, correspondingly, the top surface and the bottom surface of the vertical scale are both level.

The present invention also provides a measurement method, which adopts the above-mentioned measurement tool, and the specific steps are as follows:

Step 1. Make the measuring tool 1 of the present invention perpendicular to the web and flange of the channel steel to be measured at the same time, and make the first measurement plane 2 parallel to the channel steel web, so that the first measuring block is moved to the measured channel steel web. , when the two height positioning blocks 8 and 9 on the first measurement plane 2 are not in contact with the measured channel steel web, there is a gap, or the height positioning blocks 8 and 9 on the first measurement plane 2 are not in contact with the measured channel steel web. When the two side walls 6 and 7 of the first measuring block are in close contact with the inner side of the flange of the channel steel to be measured, that is, the inner width of the specific height of the channel steel to be measured is within the upper limit range; when the height positioning block on the first measuring block 8, 9 are in contact with the measured channel steel web and there is a gap between the two side walls 6, 7 of the first measurement block and the inner side of the measured channel steel flange, that is, the specific height and inner width of the measured channel steel exceeds the upper limit;

Step 2. Make the second measurement plane 3 parallel to the channel steel web, and move the second measurement block to the measured channel steel web. When the two height positioning blocks 10 and 11 on the second measurement plane 3 are connected to the measured groove The steel web is in contact and there is a gap between the two side walls 4 and 5 of the second measurement block and the inner side of the channel flange to be measured, or the height positioning blocks 10 and 11 on the second measurement plane 3 are in contact with the web of the channel to be measured. 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 channel steel to be measured, that is, the inner width of the specific height of the channel steel to be measured is within the lower limit range; when the height positioning block 10 on the second measuring block is When there is a gap between , 11 and the measured channel steel web and the two side walls 4 and 5 are in close contact with the inner side of the measured channel steel flange, that is, the specific height of the measured channel steel and the inner width exceeds the lower limit.

The present invention can be used when there is a gap between the two height positioning blocks 8 and 9 on the first measurement plane 2 and the measured channel steel web, or when the two height positioning blocks 8 and 9 on the first measurement plane 2 are in contact with the measured channel steel web. When the measuring channel steel web is in contact and the two side walls 6 and 7 of the first measuring block are in close contact with the inner side of the measured channel steel flange, at the same time, when the two height positioning blocks 10 and 11 on the second measuring plane 3 are in close contact with the measured channel steel flange. The channel steel web is in contact and there is a gap between the two side walls 4 and 5 of the second measuring block and the inner side of the measured channel flange, or the two height positioning blocks 10 and 11 on the second measuring plane 3 are connected to the measured channel. When the web is in contact and the two side walls 4 and 5 of the second measuring block are in close contact with the inner side of the channel flange, it is determined that the specific height and inner width of the measured channel meet the requirements, and the gantry channel is determined to be a qualified product; if The two height positioning blocks 8 and 9 on the first measuring block are in contact with the measured channel steel web and there is a gap between the two side walls 6 and 7 of the first measuring block and the inner side of the measured channel steel flange, indicating that the measured groove If the inner width of the specific height of the steel exceeds the upper limit, the gantry channel steel product is determined to be an unqualified product; When the two side walls 4 and 5 of the test channel are in close contact with the inner side of the flange of the channel steel to be tested, it means that the inner width of the specific height of the channel steel to be tested exceeds the lower limit, and the product of the channel steel of the gantry is determined to be an unqualified product.

To sum up, when measuring the inner width of the forklift gantry channel steel at a specific height, the first measurement plane 2 and the second measurement plane 3 only need to be parallel to the gantry channel steel web, so that the measurement block 1 At the same time, it is perpendicular to the inner side of the web and flange of the channel steel to be measured, and the measuring tool can be moved vertically to measure whether the inner width of the channel steel of the door frame is qualified at a specific height. The measurement method is simple and fast, which reduces the measurement time and reduces the measurement error. , thereby improving the measurement accuracy and production efficiency.

The dimensional accuracy of the tool for measuring the inner width of the channel steel at a specific height of the forklift gantry of the present invention is not easy to be deformed, easy to carry, suitable for online measurement and offline measurement; and does not need to use other high-precision measurement tools in the measurement, and is completely suitable for industrial continuous Production needs.

It is known from the technical common sense that the present invention can be realized by other embodiments without departing from its spirit or essential characteristics. Accordingly, the above-disclosed embodiments are, in all respects, illustrative and not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are encompassed by the present invention.

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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