CN217032275U - L4 size measurement checking fixture for oil gauge - Google Patents
L4 size measurement checking fixture for oil gauge Download PDFInfo
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- CN217032275U CN217032275U CN202220947331.6U CN202220947331U CN217032275U CN 217032275 U CN217032275 U CN 217032275U CN 202220947331 U CN202220947331 U CN 202220947331U CN 217032275 U CN217032275 U CN 217032275U
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Abstract
The utility model relates to an L4 size measuring gauge for an oil gauge, which structurally comprises a bottom plate, a panel, a dial indicator, a comparison gauge block and a force application gauge block, wherein the panel is horizontally arranged above the bottom plate, the dial indicator is arranged on the bottom surface of the panel, the comparison gauge block is arranged on the top surface of the panel, the force application gauge block is arranged on one measuring surface of the comparison gauge block, a measuring needle is arranged on the dial indicator, the force application gauge block and a gauge to be measured respectively press down the measuring needle, and the dial indicator is used for carrying out zero adjustment based on the length of the comparison gauge block when the force application gauge block presses down the measuring needle and measuring the difference value between the pressing size when the gauge to be measured presses down the measuring needle and the pressing size when the force application gauge presses down the measuring needle. The utility model has simple structure and operation and strong practicability, shortens the measuring time and improves the measuring efficiency while ensuring the measuring precision.
Description
Technical Field
The utility model relates to the technical field of petroleum gauge detection, in particular to an L4 size measurement detection tool for a petroleum gauge.
Background
For an oil gauge, the L4 size refers to the distance between the plane of a vanishing point of a thread and the small end face of a thread plug gauge, and an API gauge plays a crucial role in checking the thread, so that the accuracy of the L4 size is extremely important to guarantee.
The commonly used L4 size measuring tool comprises a three-coordinate measuring instrument, an altimeter, a universal display and a common normal micrometer, wherein the three-coordinate measuring instrument, the altimeter and the universal display are complex in operation, long in time consumption and large in occupied area, need to be stored in a specific environment, have high requirements on operators when the instrument is used, and cannot meet the detection requirements during field production. Taking the oil pipe gauge as an example, when a common-normal micrometer is used to measure the L4 size, as shown in fig. 1, the total length L is measured by the micrometer, then the length L1 is measured by the micrometer, and the difference between L and L1 is the L4 size to be measured. The measurement method is simple and convenient, but the problem is also very outstanding, one is that different measuring instruments are respectively used for twice measurement, the length required to be measured is indirectly obtained through data calculation, the accumulated error is larger, and the error of the detection result is larger; secondly, when the L1 dimension is measured, because the contact surface of the groove is uneven, the disc-shaped measuring surface of the common normal micrometer can cause measuring errors when contacting with the groove, and therefore, the measuring result can not meet the production requirement due to overlarge errors.
In summary, the conventional inspection tools cannot be widely used in production due to their respective limitations, so that the improvement of the inspection tools has become increasingly important.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art, provides the L4 size measurement gauge for the petroleum gauge, and has the characteristics of simple structure and operation, small error, high efficiency and strong practicability.
The purpose of the utility model is realized by the following technical scheme:
the utility model provides a L4 size measurement examines utensil for oil gauge, comprising a base plate, a panel, the percentage table, comparison gage block and application of force gage block, the bottom plate top is located to the panel level, the bottom surface of panel is located to the percentage table, on the top surface of panel is located to the comparison gage block, on a measuring surface of comparison gage block is located to the application of force gage block, be equipped with the probe on the percentage table, application of force gage block and the gauge of awaiting measuring are pushed down the probe respectively, the percentage table is used for calibrating the zero setting and measuring the difference of the size of pushing down when waiting to measure gauge to push down the probe and the size of pushing down when application of force gauge pushes down the probe when pushing down the probe.
Furthermore, the L4 size measurement checking fixture for the oil gauge further comprises a measuring rod, a through hole is formed in the panel, the measuring rod is connected with the dial indicator through the through hole, and the measuring pin is vertically connected with the measuring rod.
Furthermore, the measuring surface of one end of the force application measuring block is attached to the measuring surface of the comparison measuring block, and the other end of the force application measuring block extends out of the comparison measuring block and presses down the measuring needle.
Furthermore, the bottom plate is provided with jacks, supporting rods are inserted in the jacks, the panel is provided with screw holes corresponding to the jacks, and the supporting rods are in threaded connection with the panel through the screw holes.
Further, the panel width is 160 + -0.1 mm.
Furthermore, the surface roughness Ra of the panel is less than or equal to 0.8.
Further, the dial indicator is fixed on the bottom surface of the panel through a buckle.
The utility model has the following advantages:
1. the utility model integrates the accuracy of the gauge block and the portability of the reading of the dial indicator, and simultaneously solves the problems of long detection time, complex operation steps, high time cost, inaccurate measurement of a common normal micrometer and large error of the three-coordinate measuring instrument, the height gauge and industrial display equipment, so that the utility model has the characteristics of simple operation, small error and high efficiency.
2. The utility model has simple structure, small occupied area and strong practicability, has lower requirement on detection environment, and can meet the detection requirement during field production.
Drawings
FIG. 1 is a schematic structural diagram of a conventional oil gauge;
FIG. 2 is a schematic view of the overall structure of the present invention;
FIG. 3 is a schematic top view of the base plate of the present invention;
FIG. 4 is a schematic top view of the panel of the present invention;
FIG. 5 is a table of reference for selecting gauge block specifications according to the present invention;
FIG. 6 is a table comparing the measurement results of the present invention.
In the figure: 1. a base plate; 2. a panel; 3. a dial indicator; 4. comparing the gauge blocks; 5. a force application gauge block; 6. measuring a needle; 7. a measuring bar; 8. a through hole; 9. a jack; 10. a support bar; 11. and a screw hole.
Detailed Description
The utility model will be further described with reference to the accompanying drawings, but the scope of the utility model is not limited to the following.
As shown in fig. 2-4, an L4 size measurement gauge for an oil gauge comprises a bottom plate 1, a panel 2, a dial indicator 3, a comparison gauge block 4 and a force application gauge block 5. The panel 2 and the bottom plate 1 form a measuring platform, specifically, as shown in fig. 3, the bottom plate 1 is preferably a square structure, the bottom plate 1 is provided with jacks 9, the jacks 9 are distributed at four corners of the bottom plate 1, support rods 10 are inserted into the jacks 9, similarly, as shown in fig. 4, the panel 2 is also preferably a square structure, the panel 2 is provided with screw holes 11 corresponding to the jacks 9, the support rods 10 are in threaded connection with the panel 2 through the screw holes 11, and finally the panel 2 is horizontally supported on the bottom plate 1.
The measurement is performed on a measurement platform formed by the panel 2 and the bottom plate 1 by using a dial indicator 3, a comparison gauge 4 and a force application gauge 5. Specifically, as shown in fig. 2, the dial indicator 3 is preferably fixed to the bottom surface of the panel 2 by a fixing member such as a buckle, the dial indicator 3 is provided with the probe 6 through a threaded connection, and the probe 6 is horizontally arranged, during measurement, the comparison gauge block 4 is placed on the top surface of the panel 2, so that one measurement surface of the comparison gauge block 4 is attached to the panel 2 as the bottom surface, the other measurement surface is upward as the top surface, the force application gauge block 5 is placed on the comparison gauge block 4, so that one measurement surface at one end of the force application gauge block 5 is attached to the top surface of the comparison gauge block 4, the other end of the force application gauge block 5 extends out of the comparison gauge block 4 and presses down the probe 6 through the measurement surface, the dial indicator 3 is calibrated and zeroed based on the length of the comparison gauge block 4 when the force application gauge block 5 presses down the probe 6, then the probe 6 is pressed down by using the thread vanishing point plane of the to be calibrated, and the dial indicator 3 measures the press-down dimension when the gauge 6 is pressed down by the gauge 3 after being zeroed And (3) obtaining the L4 size of the oil gauge to be measured by subtracting the measured difference from the length of the comparison gauge block 4 (namely the distance between two measuring surfaces of the comparison gauge block 4).
In order to ensure the accuracy of the measurement data, the roughness of the top surface of the panel 2 is preferably Ra less than or equal to 0.8, so that the problem that the measurement error is increased because the measurement surface of the comparison gauge block 4 and a gauge to be measured are not placed horizontally during two measurements due to overlarge roughness of the panel 2 can be avoided; meanwhile, in order to ensure convenient operation and reading in measurement, the width of the panel 2 is preferably 160 + -0.1 mm. In addition, the length of the panel 2 is preferably 150 + -0.1 mm, and the thickness is preferably 20 + -0.1 mm, so as to ensure the overall economic cost and practical effect.
The L4 size measurement gauge for the oil gauge can also comprise a measuring rod 7, as shown in figures 1 and 4, a through hole 8 is formed in the panel 2, the measuring rod 7 is connected with the dial indicator 3 through the through hole 8, and the measuring pin 6 is vertically connected with the measuring rod 7 through threads. The measuring rod 7 is an optional component which is selected according to the L4 size of the oil gauge to be measured, when the L4 size of the oil gauge to be measured is larger than 20mm, because the height of the measuring needle 6 after being matched with the dial indicator 3 is not enough, the measuring needle 6 cannot be pressed down when the measuring gauge is measured, the measuring rod 7 needs to be selected to increase the height to achieve the pressing effect, the measuring rod 7 is not needed when the height of the measuring needle 6 after being matched with the dial indicator 3 can meet the requirement that the measuring needle 6 is pressed down by the gauge to be measured, and the measuring needle 6 is directly installed on the dial indicator 3 to be measured.
When the measuring gauge is used for measuring the dimension of L4, the measuring steps are as follows:
1. firstly, a dial indicator 3 is installed according to the theoretical value of the L4 size of the gauge to be measured, and an applicable comparison gauge block 4 and an applicable force application gauge block 5 are selected.
2. The comparative gauge block 4 and the force application gauge block 5 were lapped, and the length L of the lapped comparative gauge block 4 was recorded.
3. The dial gauge 3 is zeroed based on the length of the ground comparative gauge block 4.
4. After the dial indicator 3 is zeroed, the gauge to be measured is placed on the panel 2, the needle 6 is naturally pressed by the thread vanishing point plane of the gauge to be measured, and the reading L of the dial indicator 3 is recorded.
5. The L4 size of the gauge to be measured is calculated according to the formula L4= L- Δ L.
When the dial indicator 3 is installed, the thread vanishing point plane of the gauge to be measured is used for testing the pointer 6, so that the number of turns of the pointer of the dial indicator 3 is less than half a turn, and the position of the pointer 6 is slightly lower than the thread vanishing point plane of the gauge to be measured, thereby facilitating subsequent operation and reading.
For the selection of the comparison gauge block 4 and the force application gauge block 5, firstly, both the comparison gauge block 4 and the force application gauge block 5 are qualified through inspection, specifically, the comparison gauge block and the force application gauge block conform to the production standard GB/T6093-2001 and the verification procedure JJJG 146-2011, secondly, because the range of the dial indicator 3 is 1mm, in order to ensure that the maximum range of the dial indicator 3 is not exceeded during measurement, the size of the comparison gauge block 4 is 1mm at most added to the size of L4, in order to ensure the measurement accuracy, the precision grade of the comparison gauge block 4 is selected from three equal grade gauge blocks, and the specific selection reference can be selected according to the graph 5.
When the comparison gauge block 4 and the force application gauge block 5 are lapped, one end of the force application gauge block 5 is overlapped at one end of the comparison gauge block 4, the overlapped part is pressed to enable the force application gauge block 5 to slide on the comparison gauge block 4 until strong adhesive force exists between the two, the combined error of the comparison gauge block 4 and the force application gauge block 5 is reduced through lapping so as to facilitate subsequent measurement, the measurement surfaces of the comparison gauge block 4 and the force application gauge block 5 are wiped after lapping, and the measuring device is used after the temperature is constant.
When the dial indicator 3 is adjusted to zero, the ground comparison gauge block 4 and the force application gauge block 5 are placed on the panel 2, the force application gauge block 5 presses the measuring pin 6, and then the dial 0 scale mark of the dial indicator 3 is aligned to the pointer after the comparison gauge block 4 and the force application gauge block 5 are cooled to room temperature.
The length L of the comparison measuring block 4 is the distance between two parallel measuring surfaces of the comparison measuring block 4, which is slightly larger than L4, the needle 6 is naturally pressed by the thread vanishing point plane of the gauge to be measured after the zero setting of the dial gauge 3, and the value L of the dial gauge 3 is the size of the needle 6L when the force application measuring block is more than 5, so the value L minus L is the L4 size of the gauge to be measured.
Fig. 6 is a comparison table of measurement results obtained after field use verification according to the technical scheme of the utility model, wherein the special gauge is the measurement gauge of the utility model, the measurement is specifically detected according to the specification of 1.050 TBG of the oil pipe, the error of the detected data is 0.005, and the data can reach within ± 0.025 of the API standard requirement. The measurement data of the utility model is close to the measurement results of three-coordinate industrial display and industrial display, is superior to the measurement data of a common normal micrometer, and meets the measurement requirements. The measuring and checking tool is simple and quick to operate, integrates the accuracy of the gauge block and the convenience of reading of the dial indicator 3, greatly shortens measuring time, reduces operating difficulty of operators, and improves measuring efficiency, so that the measuring and checking tool has the characteristics of simplicity in operation, small error and high efficiency. Meanwhile, the technical scheme of the utility model also provides a good reference thought for the detection of the sizes of similar oil gauges, and has good application and popularization values.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a L4 size measurement examines utensil for oil gauge which characterized in that: the force application gauge block comprises a bottom plate (1), a panel (2), a dial indicator (3), a comparison gauge block (4) and a force application gauge block (5), wherein the panel (2) is horizontally arranged above the bottom plate (1), the dial indicator (3) is arranged on the bottom surface of the panel (2), the comparison gauge block (4) is arranged on the top surface of the panel (2), the force application gauge block (5) is arranged on one measuring surface of the comparison gauge block (4), a measuring pin (6) is arranged on the dial indicator (3), the force application gauge block (5) and a gauge to be measured respectively press down the measuring pin (6), and the dial indicator (3) is used for calibrating and zeroing based on the length of the comparison gauge block (4) when the force application gauge block (5) presses down the measuring pin (6) and measuring the difference value of the pressing-down size when the measuring pin (6) is pressed down by the force application gauge and the pressing-down size when the force application gauge presses down the measuring pin (6).
2. The L4 dimensional measurement gauge for an oil gauge of claim 1, wherein: the L4 size measurement checking fixture for the petroleum gauge further comprises a measuring rod (7), a through hole (8) is formed in the panel (2), the measuring rod (7) is connected with the dial indicator (3) through the through hole (8), and the measuring pin (6) is vertically connected with the measuring rod (7).
3. The L4 dimensional measurement gauge for an oil gauge of claim 1, wherein: the measuring surface of one end of the force application measuring block (5) is attached to the measuring surface of the comparison measuring block (4), and the other end of the force application measuring block (5) extends out of the comparison measuring block (4) and presses down the measuring needle (6).
4. The L4 dimensional measurement gauge for an oil gauge of claim 1, wherein: the bottom plate (1) is provided with an inserting hole (9), a supporting rod (10) is inserted in the inserting hole (9), the panel (2) is provided with a screw hole (11) corresponding to the inserting hole (9), and the supporting rod (10) is in threaded connection with the panel (2) through the screw hole (11).
5. The L4 dimensional measurement gauge for an oil gauge of claim 1, wherein: the width of the panel (2) is 160 +/-0.1 mm.
6. The L4 dimensional measurement gauge for an oil gauge of claim 1, wherein: the surface roughness Ra of the panel (2) is less than or equal to 0.8.
7. The L4 dimensional measurement gauge for an oil gauge of claim 1, wherein: the dial indicator (3) is fixed on the bottom surface of the panel (2) through a buckle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220947331.6U CN217032275U (en) | 2022-04-22 | 2022-04-22 | L4 size measurement checking fixture for oil gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220947331.6U CN217032275U (en) | 2022-04-22 | 2022-04-22 | L4 size measurement checking fixture for oil gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217032275U true CN217032275U (en) | 2022-07-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220947331.6U Active CN217032275U (en) | 2022-04-22 | 2022-04-22 | L4 size measurement checking fixture for oil gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217032275U (en) |
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2022
- 2022-04-22 CN CN202220947331.6U patent/CN217032275U/en active Active
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