CN211783240U - Measuring device for measuring bending difference calculation basis - Google Patents
Measuring device for measuring bending difference calculation basis Download PDFInfo
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- CN211783240U CN211783240U CN202020548527.9U CN202020548527U CN211783240U CN 211783240 U CN211783240 U CN 211783240U CN 202020548527 U CN202020548527 U CN 202020548527U CN 211783240 U CN211783240 U CN 211783240U
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- 238000005452 bending Methods 0.000 title claims abstract description 29
- 238000004364 calculation method Methods 0.000 title claims abstract description 28
- 238000001514 detection method Methods 0.000 claims abstract description 42
- 230000001817 pituitary effect Effects 0.000 claims abstract description 9
- 238000007689 inspection Methods 0.000 claims description 15
- 206010062767 Hypophysitis Diseases 0.000 claims description 3
- 210000003635 pituitary gland Anatomy 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 14
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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Abstract
The utility model provides a measuring device for be used for surveying the poor calculation foundation of crooked relates to the levelling staff and detects technical field, has solved the technical problem who does not have the device that is used for surveying the poor calculation foundation of crooked that requires not high to the environment among the prior art. The measuring device for measuring the calculation basis of the bending difference comprises a pair of supporting pieces, wherein an erecting groove is formed in any one of the supporting pieces, and the pair of supporting pieces are arranged at two ends of a leveling staff in a mirror symmetry manner; the detection rope is respectively arranged in the pair of oppositely arranged erection grooves close to the two end parts of the detection rope; a pair of pituitary bodies respectively arranged at two ends of the detection rope; distance measuring device can measure and be located a pair of between the support piece detect the perpendicular distance of arbitrary position to the levelling staff of rope, the utility model discloses can be applicable to under the multiple environment to the measurement of the relevant data of levelling staff, be convenient for calculate its bending difference.
Description
Technical Field
The utility model belongs to the technical field of levelling staff detects technique and specifically relates to a measuring device for record crooked poor calculation foundation is related to.
Background
The scale inspection is basically to measure certain parameters of the scale through a professional instrument in a newly delivered or fixed time period, and take the parameters as calculation bases to calculate the bending difference of the scale, the bending difference is qualified and can be put into use, and the inspection is not generally carried out at other time periods.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a measuring device for being arranged in measuring crooked poor calculation foundation to solve the technical problem who does not have the device that is used for measuring crooked poor calculation foundation that requires not high to the environment among the prior art.
In order to achieve the above purpose, the utility model provides a following technical scheme:
the utility model provides a measuring device for be used for surveying the poor calculation basis of bending is applicable to the poor inspection of bending of levelling staff graduation face, include:
the leveling staff comprises a pair of supporting pieces, a leveling staff and a leveling staff, wherein an erecting groove is formed in any one of the supporting pieces, and the supporting pieces are arranged at two ends of the leveling staff in a mirror symmetry manner;
the detection rope is respectively arranged in the pair of oppositely arranged erection grooves close to the two end parts of the detection rope;
a pair of pituitary bodies which have the same weight and are respectively arranged at two ends of the detection rope;
and a distance measuring device capable of measuring a vertical distance from any part of the detection string between the pair of support members to the leveling staff.
Optionally, the support comprises:
the fixing pieces are detachably arranged at two ends of the leveling staff;
the supporting part is fixedly arranged on the fixing part, and the erection groove is arranged on the supporting part.
Optionally, the fixing member comprises:
the limiting part is provided with a limiting space, and at least part of the end part of the leveling staff can be contained in the limiting space;
and the fastening part is arranged on the limiting part and limits the relative position between the limiting part and the leveling staff.
Optionally, the fastening portion is a screw, the limiting portion is provided with a threaded through hole matched with the screw, and the first end of the screw can abut against the leveling staff through the threaded through hole.
Optionally, the screw further includes a top cap, a first end of the top cap abuts against the leveling staff, a second end of the top cap is connected with the first end of the screw, and a radial size of the first end of the top cap is larger than a radial size of the first end of the screw.
Optionally, the number of the erection grooves on any one of the supporting members is 2, and the difference between the bottoms of the 2 erection grooves and the vertical height of any horizontal plane is 5 mm.
Optionally, the erection groove is a V-shaped groove, and corner portions of the erection groove are rounded.
Optionally, the diameter of the detection rope is less than or equal to 0.1 mm; and the length of the surveyed leveling staff is X, the length of the detection rope is Y, and Y is X +0.5 m.
Optionally, the weight of any of said pituitary glands is 0.5 KG.
Optionally, the apparatus further comprises a support platform for carrying the levelling rod, the support platform having a length equal to or greater than one half the length of the levelling rod.
The utility model provides a measuring device for measuring the calculation basis of the bending difference, which is suitable for the inspection of the bending difference of the graduation surface of a leveling staff, comprising a pair of supporting pieces, wherein any one of the supporting pieces is provided with an erecting groove, and a pair of the supporting pieces are arranged at the two ends of the leveling staff in a mirror symmetry manner; the detection rope is respectively arranged in the pair of oppositely arranged erection grooves close to the two end parts of the detection rope; a pair of pituitary bodies respectively arranged at two ends of the detection rope; distance measuring device can measure and be located a pair of between the support piece detect the perpendicular distance of arbitrary position of rope to levelling staff, the utility model discloses only need set up a pair of support piece in the staff both ends to set up the perpendicular distance of multipoint to the levelling staff on the detection rope of detecting the groove through distance measuring device measurement, just can utilize to survey numerical value and carry out the inspection that the levelling staff graticule bends the difference, can be applicable to under the multiple environment to the measurement of levelling staff relevant data, be convenient for calculate its bending difference.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is an isometric view of a support member of the present invention;
fig. 2 is a schematic view of the usage state of the present invention.
In the figure 1, a groove is set up; 2. detecting the rope; 3. a pituitary; 4. a support member; 41. a fixing member; 411. a limiting part; 412. a fastening section; 42. a support portion; 5. a top cap; 6. a support table; 7. a leveling staff.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model provides a measuring device for be used for surveying the poor calculation basis of bending is applicable to the poor inspection of 7 dividing planes bending of levelling staff, as shown in figure 1 ~ 2, include:
a pair of support members 4 are provided which,
The detection string 2 is provided with a detection line,
the object to be supported is a detection rope 2, the detection rope 2 is respectively erected in a pair of oppositely-arranged erection grooves 1 near the two end parts of the detection rope, and the detection rope 2 can stretch over the leveling staff 7;
a pair of pituitary bodies 3 which have the same weight and are respectively arranged at two ends of the detection rope 2, and can tighten the detection rope 2 between the pair of supports 4, so that the tightened detection rope 2 determines a horizontal reference for distance measurement;
a distance measuring device capable of measuring a vertical distance from any portion of the detection string 2 between the pair of supports 4 to the leveling staff 7; the distance measuring device can be a triangular ruler, one right-angle side of the triangular ruler is abutted against the leveling staff 7, the other right-angle side of the triangular ruler is used for measuring the vertical distance from the leveling staff 7 to any point on the detection rope 2, and the measuring position of the distance measuring device can be changed as required, so that different measuring data can be obtained;
the utility model discloses a structure has decided it convenient to carry, and is not high to service environment's requirement, and convenient to use can conveniently record the numerical value foundation that carries out the poor calculation of bending, is convenient for calculate leveling staff 7's the poor bending, when measuring with the set square, avoids set square slope error production, needn't consider the no scale part of right angle department, because of the length unanimity of no scale part, can ignore no scale part, the number of degrees of direct reading set square can.
As an alternative embodiment, the support 4 comprises:
the fixing member (41) is fixed to the frame,
the fixing member 41 is detachably disposed at two ends of the leveling staff 7, so that the leveling staff 7 can be conveniently measured at any time, and the requirement on the environment is not high.
The support portion 42 is formed of a metal,
the supporting portion 42 is fixedly disposed on the fixing member 41, and the installation groove 1 is opened on the supporting portion 42, specifically, the supporting portion 42 is a plate-shaped structure, a first side of the plate-shaped structure is fixedly disposed on the fixing member 41, and a second side opposite to the first side is opened with the installation groove 1.
As an alternative embodiment, the fixing member 41 includes:
the position-limiting portion 411 is provided with a limiting portion,
the labeling ruler is provided with a limiting space, at least part of the end part of the standard ruler 7 can be contained in the limiting space, specifically, the limiting part 411 is a U-shaped clamping groove, at least part of the end part of the standard ruler is contained in the clamping groove, and the groove top tightly sticks to the surface of the labeling ruler.
The fastening portion 412 is provided at the side of the body,
the fastening part 412 is mounted on the limiting part 411, the relative position between the limiting part 411 and the leveling staff 7 is limited, and the end part of the leveling staff is clamped between the fastening part 412 and the groove top of the clamping groove, so that the support part 4 is fixed.
As an optional implementation manner, the fastening portion 412 is a screw, a threaded through hole matched with the screw is formed in the limiting portion 411, the threaded through hole is formed in the bottom of the clamping groove, the first end of the screw can abut against the leveling staff 7 through the threaded through hole, and the support member 4 can be fixed to and detached from the end portion of the leveling staff by rotating the screw.
As an optional embodiment, the screw further includes a top cap 5, a first end of the top cap 5 abuts against the leveling staff 7, a second end of the top cap 5 is connected with the first end of the screw, and the connection manner includes fixed connection or detachable connection, for example, the fixed connection includes sleeving the second end of the top cap 5 on the first end of the screw, and then the diameter of the first end of the screw is increased to avoid the top cap 5 from falling off, and the detachable connection includes connection by using a snap spring, and the connection manner includes, but is not limited to, the above manners; the radial size of the first end of the top cap 5 is larger than that of the first end of the screw, so that the contact area between the fastening part 412 and the end part of the scale is increased, the surface of the scale can be protected, and meanwhile, the support part 4 can be fixed on the end part of the scale more reliably.
As an optional embodiment, the number of the erection grooves 1 on any one of the support members 4 is 2, and the vertical heights of the bottoms of the 2 erection grooves 1 and any horizontal plane are different by 5mm, the erection grooves 1 with different heights are adopted to facilitate finding of measurement gross errors, and meanwhile, more data can be measured, so that the calculation result of the bending difference can be more accurate.
As an alternative embodiment, the setting groove 1 is a V-shaped groove, which can fix the position of the detection rope 2 reliably, make the measured data more accurate, and make the corner portions rounded, which can prevent the sharp corner portions from cutting off the detection rope 2.
As an alternative embodiment, the diameter of the detection rope 2 is less than or equal to 0.1mm, so as to reduce the reading error of data; the length of the surveyed leveling staff 7 is X, the length of the detection rope 2 is Y, and Y is X +0.5m, namely the length of the detection rope 2 exceeds the surveyed staff 0.5m, so that the pituitary bodies 3 can be hung at the two ends of the detection rope 2 conveniently.
In an alternative embodiment, the weight of any of the pituitary glands 3 is 0.5KG, which can ensure that the detection rope 2 is in a tight state.
As an optional implementation mode, the device further comprises a supporting table 6 for bearing the leveling staff 7, the length of the supporting table 6 is greater than or equal to one half of the length of the leveling staff 7, the leveling staff needs to be flatly placed during measurement, in order to avoid deformation of the leveling staff and influence accuracy of measured data, the leveling staff is placed on the supporting table 6, meanwhile, the time required for measurement is short, the length of the supporting table 6 is greater than or equal to one half of the length of the leveling staff 7, stability of the size of the leveling staff can be guaranteed, and the supporting table 6 can be a table top, a bed surface and the like.
Wherein, the utility model discloses according to serial number 3 and 6.2.3 the requirement in serial number 3 and national third and fourth grade leveling standard (GBT12898-2009)6.2.2 the table 4 in the leveling standard of "national first class two etc. (GB/T12897) 6.2.2 section table 5, refer to the requirement of two national standard annex B.3 sections, comply with this section computational formula simultaneously, according to the thinking of" unnecessary observation is asked for the average and is come and go and measure the weak equipment difference ", acquire the inspection data, reach the purpose of inspection.
The utility model discloses a use method does:
placing the scale with the basic division surface facing upwards on a support table 6;
the two ends of the scale are respectively provided with a supporting piece 4, the upper clamping surface of the U-shaped clamping groove is tightly attached to the basic dividing surface of the scale, the locking screw connected to the lower clamping surface is rotated clockwise, the top cap 5 is tightly attached to the auxiliary dividing surface of the scale, the screw locking degree is proper, and the fixed column inspection device is not loosened and the scale surface is not damaged;
taking a detection rope 2, placing the detection rope 2 in the same pair of erection grooves 1 (No. 1 or No. 2) of the supporting pieces 4 at the two ends of the scale, hanging pituitary bodies 3 at the two ends of the detection rope 2, and tightening the pituitary bodies to keep the middle part of the detection rope 2 from sinking;
measuring the upper half of the measurement: the detection rope 2 is sequentially placed on a pair of No. 1 erection grooves 1 (high positions) and a pair of No. 2 erection grooves 1 (low positions), the scale surface is measured to the height of the detection rope 2 at three positions which are 15 cm away from two ends of the scale and in the middle of the scale, each position is measured for three times, the mutual difference is not more than 0.3 mm, and the average number is taken as a final value; firstly measuring three positions of the No. 1 erection tank 1, and then measuring three positions of the No. 2 erection tank 1;
measurement of the next half of the test returns: and exchanging the positions of the inspection devices at the two ends of the scale, and measuring the lower half of the measured value according to the requirement and the method of the upper half of the measured value, thereby finishing the working process of scale data acquisition.
The data calculation method comprises the following steps:
scale bending difference calculation formula: f ═ RIn-(ROn the upper part+RLower part)/2┈┈┈┈┈┈┈┈┈┈1
Wherein f is the bending difference of the scale and the unit is millimeter;
Ron the upper part、RIn、RLower partThe readings are taken in millimeters at the upper, middle and lower positions of the scale.
The first-class level f and the second-class level f are not more than 4 mm; the third and fourth levels f are not more than 8 mm, and after the third and fourth levels f exceed the limit, the length of the staff gauge is corrected according to the following formula;
scale bending difference correction formula: l' -8f2/(3l′)┈┈┈┈┈┈┈┈┈┈┈┈┈2
In the formula: l is the length of the scale and l' is the nominal length of the scale in millimeters.
And calculating and correcting the bending difference according to the ruler bending difference calculating and correcting formula.
Further, the above calculation method may adopt a table calculation method, which is clear and accurate in calculation using a table, and convenient for inspection and analysis, and the table calculation method is as follows (during operation, 2 rulers are used as a group, so that the table calculation is performed by simultaneously performing inspection on two rulers):
firstly, measuring back in the first half, wherein the higher erection groove 1 is the position No. 1, the lower erection groove 1 is the position No. 2, measuring 3 times from the position 15 cm away from the upper end of the scale at the position No. 1, and respectively filling the times to (1), (2) and (3) of the table; measuring 3 times in the middle of the scale, and filling the times to (4), (5) and (6) of the table respectively; measuring 3 times at a distance of 15 cm from the lower end of the scale, and filling the times in (7), (8) and (9) of the table respectively. Measuring 3 times at the position 2 and 15 cm away from the upper end of the scale, and filling the times into (10), (11) and (12) of the table respectively; measuring 3 times in the middle of the scale, and filling the times into (13), (14) and (15) of the table respectively; measuring 3 times at a distance of 15 cm from the lower end of the scale, and filling the obtained data to (16), (17) and (18) of the table respectively.
Next, the next half of the test is performed, the position of the checking device is changed, and 3 times of measurement is performed at the position 1 and 15 cm away from the upper end of the scale, and the measurement is respectively filled in (19), (20) and (21) of the table; measuring 3 times in the middle of the scale, and filling the times into (22), (23) and (24) of the table respectively; the lower end of the scale is measured 3 times at 15 cm, and the results are filled in (25), (26) and (27) of the table, respectively. Measuring 3 times at the position 2 and 15 cm away from the upper end of the scale, and filling the times into (28), (29) and (30) of the table respectively; measuring 3 times in the middle of the scale, and filling the times into (31), (32) and (33) of the table respectively; the lower end of the scale is measured 3 times at 15 cm, and the table is filled with the measured values (34), (35) and (36). In the tables, (52) to (102) are measurement data on the other scale, and represent the same meanings as (1) to (51).
Tables (37) to (48) represent the average of three readings; (49) the (50) and (51) are the average of the measured data of the scale at the upper, middle and lower three positions; (103) is the scale bending difference calculated according to the above formula 1, and (107) to (112) are the set groove 1 differences. The corresponding position of the other scale means the same meaning, (104) is the scale bending difference of the other scale.
If the limit is exceeded, (105), (106) are the actual length of the two scales calculated according to the formula 2.
Wherein, the upper half measuring loops (37) and (40), (38) and (41), (39) and (42) and the lower half measuring loops (43) and (46), (44) and (47), (45) and (48) can be compared with whether the difference of the setting grooves (107) to (118) of the checking devices are consistent, so as to find the gross error and verify the system error of a pair of checking devices; the upper half and the lower half of the two built grooves are used for measuring the average number to calculate the bending difference, the thought of 'redundant observation averaging and round trip measurement weakening equipment difference' is applied, the measurement error is weakened, the error generated by the precision of the inspection device is eliminated, and the inspection result precision is high.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and all should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A measuring device for measuring a basis for a bend difference calculation, suitable for use in the inspection of a levelling rod facet bend difference, comprising:
the leveling staff comprises a pair of supporting pieces, a leveling staff and a leveling staff, wherein an erecting groove is formed in any one of the supporting pieces, and the supporting pieces are arranged at two ends of the leveling staff in a mirror symmetry mode;
the detection rope is respectively arranged in the pair of oppositely arranged erection grooves close to the two end parts of the detection rope;
a pair of pituitary bodies which have the same weight and are respectively arranged at two ends of the detection rope;
and a distance measuring device capable of measuring a vertical distance from any part of the detection string between the pair of support members to the leveling staff.
2. A measuring device for measuring a basis for a calculation of a difference in bending according to claim 1, wherein said support member comprises:
the fixing pieces are detachably arranged at two ends of the leveling staff;
the supporting part is fixedly arranged on the fixing part, and the erection groove is arranged on the supporting part.
3. A measuring device for measuring a basis for a calculation of a difference in bending according to claim 2, wherein said fixing member comprises:
the limiting part is provided with a limiting space, and at least part of the end part of the leveling staff can be contained in the limiting space;
and the fastening part is arranged on the limiting part and limits the relative position between the limiting part and the leveling staff.
4. The measuring device for measuring the basis for calculating the bending difference as claimed in claim 3, wherein the fastening portion is a screw, the limiting portion is provided with a threaded through hole adapted to the screw, and a first end of the screw can abut against the leveling staff through the threaded through hole.
5. A measuring device for measuring a differential bend calculation basis as defined in claim 4 wherein said screw further includes a top cap, a first end of said top cap abutting said leveling staff, a second end of said top cap being connected to a first end of said screw, a radial dimension of said first end of said top cap being greater than a radial dimension of said first end of said screw.
6. A measuring device for measuring a basis for a calculation of a difference in curvature as set forth in any of claims 1-5, wherein the number of said standing grooves on any of said supporting members is 2, and the vertical heights of the bottoms of 2 of said standing grooves from any horizontal plane are different by 5 mm.
7. A measuring apparatus according to claim 6, wherein said bridging groove is a V-shaped groove and the corner portions thereof are rounded off.
8. A measuring device for measuring a calculation basis for a difference in bending according to claim 1, wherein said measuring cord has a diameter of 0.1mm or less; and the length of the surveyed leveling staff is X, the length of the detection rope is Y, and Y is X +0.5 m.
9. A measuring device for measuring a basis for a calculation of a difference in bending according to claim 1, wherein the weight of any of said pituitary glands is 0.5 KG.
10. A measuring device according to claim 1, further comprising a support for carrying the levelling rod, the support having a length equal to or greater than one-half the length of the levelling rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020548527.9U CN211783240U (en) | 2020-04-14 | 2020-04-14 | Measuring device for measuring bending difference calculation basis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020548527.9U CN211783240U (en) | 2020-04-14 | 2020-04-14 | Measuring device for measuring bending difference calculation basis |
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| Publication Number | Publication Date |
|---|---|
| CN211783240U true CN211783240U (en) | 2020-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020548527.9U Expired - Fee Related CN211783240U (en) | 2020-04-14 | 2020-04-14 | Measuring device for measuring bending difference calculation basis |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113418492A (en) * | 2021-06-21 | 2021-09-21 | 广东省计量科学研究院（华南国家计量测试中心） | Device for automatically detecting bending difference of leveling staff |
-
2020
- 2020-04-14 CN CN202020548527.9U patent/CN211783240U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113418492A (en) * | 2021-06-21 | 2021-09-21 | 广东省计量科学研究院（华南国家计量测试中心） | Device for automatically detecting bending difference of leveling staff |
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Granted publication date: 20201027 |