CN105299005B - Flange to positive assembly method and implement this method to positive rigging position degree cubing - Google Patents
Flange to positive assembly method and implement this method to positive rigging position degree cubing Download PDFInfo
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- CN105299005B CN105299005B CN201510754696.1A CN201510754696A CN105299005B CN 105299005 B CN105299005 B CN 105299005B CN 201510754696 A CN201510754696 A CN 201510754696A CN 105299005 B CN105299005 B CN 105299005B
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- 238000000034 method Methods 0.000 title abstract description 18
- 239000000758 substrate Substances 0.000 claims description 34
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 24
- 239000011159 matrix material Substances 0.000 claims description 13
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000006073 displacement reaction Methods 0.000 claims description 2
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims description 2
- 238000005096 rolling process Methods 0.000 claims 2
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 238000010276 construction Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 230000035515 penetration Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000004438 eyesight Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
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Abstract
The invention discloses a kind of flange to positive assembly method and implement this method to positive rigging position degree cubing.The cubing is by measuring the angle on two flanges between the line and plumb line of datum hole, so that two flanges are identical relative to the position of plumb line, namely using plumb line as positioning datum, position adjustment has been carried out to the datum hole on two flanges, in the case of by two datum holes on the same flange of determination, ensure that the position in remaining each each hole of bolt on flange is fixed, so that before flange is not installed, two flanges have been fixed with respect to the position of plumb line, also the relative position for allowing for two flanges is fixed, when flange being installed on parts ontology again in this way, it no longer needs to be adjusted the relative position of two flanges, therefore the adjustment operation of two flanges will become time saving and energy saving in the assembly method of such flange, also the efficiency of assembling for allowing for flange improves.
Description
Technical field
The present invention relates to a kind of flange to positive assembly method and implement this method to positive rigging position degree cubing.
Background technology
Currently, set pipe part is largely used in the fields such as power construction, construction, and these set tubings zero
The sleeve body both ends of part are usually each equipped with flange, for ease of construction, are usually needed sleeve body both ends in assembling stage
Flange to just, even if each bolt penetration hole corresponding align on flange, to ensure that construction personnel can flexibly construct.
In traditional sleeve part assembly technology, first sleeve body is kept flat, the flange of sleeve body one end is fixed, then by casing
Ontology erects so that one end that sleeve body is equipped with flange is placed in lower section, and one end of unassembled flange is in top, then
Flange is mounted in the upper end of sleeve body in advance, using the pendant hung on the flange of upper end come the flange with lower end so that set
The bolt penetration hole on flange on the upper and lower end of tube body is mutually aligned, but in actual use, and this assembling mode is deposited
In following defect：
1, the range estimation that position of the pendant on upper and lower two flange fully relies on assembly crewman judges, in this way will be so that two flanges
The eyesight and working experience that assembly crewman is depended entirely on to positive situation so that flange cannot be guaranteed to positive precision,
The assembly precision error range for also resulting in each set pipe parts is larger；
2, the size of the set pipe parts used in power construction is larger, the diameter of this general type component 1m with
On, length is then in 5m or more, and two flanges are required in the range of within 1mm positive error, this allows for flange right
During just, the minimum rotation of upper flange adjusts position, the significantly swing of pendant is will also result in, so that flange is to positive mistake
Journey is time-consuming and laborious.
Invention content
The object of the present invention is to provide a kind of flange at raising parts both ends to the flange of positive operating efficiency to just assembling
Method, while additionally providing and a kind of being exclusively used in implementing the flange to positive assembly method to positive rigging position degree cubing.
In order to achieve the goal above, flange is as follows to the technical solution of positive assembly method in the present invention：
Flange includes the following steps positive assembly method：
Step 1 waits for two erecting positive flange, and chooses a pair of of conduct respectively in each bolt through-hole of two flanges
Datum hole, relative position of two pairs of datum holes on residing flange are identical；
Step 2, measures the angle between the line and plumb line in the axle center of two datum holes on same flange, and by around
Central axis rotary flange and make two flanges on the angle it is identical；
Step 3, two flanges after being adjusted via step 2 are mounted on the both ends of parts.
In step 1, one is in flange erected state lower flange central shaft in two datum holes selected on same flange
The surface of line.
Another in the datum hole selected on same flange is in the underface of flange erected state lower flange central axis.
The technical solution to positive rigging position degree cubing of the present invention is as follows：
To positive rigging position degree cubing, includes the pedestal for being connected across on flange between two datum holes, rotated on pedestal
It is equipped with the pendulum for being swung around pivot center that is parallel with the axis of residing flange or overlapping.
It is equipped on pedestal and/or pendulum for detecting the relative displacement size between pendulum and pedestal when pedestal erects
Or the measuring piece of Angular Dimension.
Measuring piece is dial gauge, the table body of dial gauge be fixed in pendulum and pedestal a upper, gauge outfit top mounted in pendulum and
On another in pedestal.
The corresponding dowel hole offered for being mutually aligned when pedestal is in vertical position on pendulum and pedestal.
Pendulum includes swinging rod-shaped or rope form the swing arm part and its fixed tup of projecting end being assemblied on pedestal.
Pedestal is the telescopic flexible bridge of length.
The end of pedestal is fixed with the locating rod for being installed in datum hole, is fixed with for block in base in locating rod
Stop part on the both ends aperture in quasi- hole, it is at least one in stop part to be equipped with for coordinating with the edge inclined-plane in corresponding aperture
Orientational cone-shaped surface.
By measuring the angle on two flanges between the line and plumb line of datum hole in the present invention, so that two flanges are opposite
It is identical in the position of plumb line, that is, using plumb line as positioning datum, the datum hole on two flanges is carried out
Position adjustment ensures the position in remaining each each hole of bolt on flange in the case of by two datum holes on the same flange of determination
Fixation is set, so that before flange is not installed, two flanges have been fixed with respect to the position of plumb line, also allow for the phase of two flanges
Position is fixed, when so again being installed flange on parts ontology, no longer needs to carry out the relative position of two flanges
Adjustment, therefore the adjustment operation of two flanges will become time saving and energy saving in the assembly method of such flange, also allow for the dress of flange
It is improved with efficiency.
Description of the drawings
Fig. 1 is the structural schematic diagram in a state of use of the embodiment of the position detecting tool of the present invention；
Fig. 2 is the right view of Fig. 1；
Fig. 3 is the partial enlarged view at A in Fig. 1；
Fig. 4 is the partial enlarged view at B in Fig. 1；
Fig. 5 is the partial enlarged view at C in Fig. 1；
Fig. 6 is the partial enlarged view at D in Fig. 1；
Fig. 7 is the partial enlarged view at E in Fig. 2；
Fig. 8 is the structural schematic diagram of lengthened plate in Fig. 4；
Fig. 9 is the upward view of Fig. 8；
Figure 10 is the structural schematic diagram of substrate in Fig. 3；
Figure 11 is the vertical view of Figure 10；
Figure 12 is the structural schematic diagram of gauge stand in Fig. 4；
Figure 13 is the left view of Figure 12；
Figure 14 is the structural schematic diagram of guide pad in Fig. 5；
Figure 15 is the vertical view of Figure 14；
Figure 16 is the structural schematic diagram of upper locating rod in Fig. 3；
Figure 17 is the structural schematic diagram of hanging ring in Fig. 3；
Figure 18 is the F-F sectional views of Figure 17；
Figure 19 is the structural schematic diagram of lower locating rod in Fig. 6.
Specific implementation mode
Embodiment of the flange to positive assembly method in the present invention：A kind of wall bushing both ends to High-Voltage Electrical Appliances when this method
The method that flange is assembled, includes the following steps：
Step 1 waits for two erecting positive flange, and chooses a pair of of conduct respectively in each bolt through-hole of two flanges
Datum hole, relative position of two pairs of datum holes on residing flange is identical, in two datum holes selected on same flange at one
In the surface of flange erected state lower flange central axis, another be in flange erected state lower flange central axis just
Lower section；
Step 2, measures the angle between the line and plumb line in the axle center of two datum holes on same flange, and by around
Central axis rotary flange and make two flanges on the angle it is identical；
Step 3, two flanges after being adjusted via step 2 are mounted on the both ends of sleeve body.
In the above-described embodiments, two datum holes on flange are opposing upper and lower, that is, under flange set-up positions, two
Line between datum hole is to need to overlap with plumb line, and in other embodiments, two datum holes can also be on flange
Remaining bolt through-hole, especially when two datum holes are horizontal opposite two bolt through-holes on flange, the line between two datum holes is
It needs vertical with plumb line.
To the embodiment of positive rigging position degree cubing in the present invention：As shown in Fig. 1 to Figure 19, which is a kind of band percentage
Table pendulum position detecting tool is mainly made of pedestal 1, pendulum 2 and 3 three parts of measuring piece.Pedestal 1 be a kind of substrate 11 and plus
The telescopic flexible bridge of length that long slab 12 is formed by connecting, pendulum 2 are that hanging ring 21, swing arm part 22 and tup 23 are formed by connecting
Single armed clock-type pendulum, measuring piece 3 are then the dial gauges assembled on the pedestal 1.The hypomere of substrate offers the adjustment extended up and down
Slot hole 111, adjust slot hole 111 in along the vertical direction guiding movement be equipped with guide pad 13,13 screw of guide pad is connected in lengthening
The upside of plate 12, so that lengthened plate 12 is oriented to assembly on the substrate 11 along the vertical direction by guide pad 13；The upper end of substrate 11
It is connected with positioning component, upper positioning component includes the upper locating rod 14 that left and right extends, and the right end of upper locating rod 14 is threadedly coupled
It is useful for block and is convexly equipped with block in benchmark along upper upper stop part 15, the periphery of upper locating rod 14 in the right end hole of datum hole
Along upper upper block convex shoulder 141, the opposing end surface of upper block convex shoulder 141 and upper stop part 15 is and datum hole in the left end hole in hole
The orientational cone-shaped surface that corresponding stomidium coordinates along inclined-plane, and be convexly equipped on the periphery of upper locating rod 14 adjacent with upper block convex shoulder 141
Positioning convex shoulder 142, the peripheral surface of positioning convex shoulder 142 be the cylindrical surface being adapted to the perforation on substrate 11, positions convex shoulder 142
Outer diameter be less than block convex shoulder big end outer diameter so that block convex shoulder positioning convex shoulder 142 right side formed can block in substrate 11
On perforation right ports along upper step surface, and positioning convex shoulder 142 periphery on offer the fixed pin installed for pin
Hole 143, and the left end of upper locating rod 14 is additionally provided with the assembly end 144 in 142 left side of positioning convex shoulder, the assembly end 144
It is less than the short axle end of positioning 142 outer diameter of convex shoulder for outer diameter, assembles and offer the spiral shell in axis part on the end face of end 144
Line blind hole；The one side wall of the gauge stand 16 for being fixedly arranged in the middle of L-type of substrate, gauge stand 16 is fixed in the right side plate face of substrate 11, is another
One side wall is arranged at intervals on the right side of substrate 11, and offers supply and marketing in the opposite site of the fixed sidewall of gauge stand 16 and substrate 11
Follow closely the benchmark fixed pin hole 161 installed.The upside of lengthened plate 12 is equipped with the caulking groove 121 being embedded in for guide pad 13, the slot bottom of caulking groove 121
On offer and installed for trip bolt and guide pad 13 is made to be fixed on the screw perforation on lengthened plate 12 by trip bolt；Lengthened plate
12 downside offers the positioning slot hole 122 extended up and down, and lower positioning component, lower positioning group are equipped in the positioning slot hole 122
Part includes being installed on the lower locating rod 17 positioned in slot hole 122 and the lower stop part 18 for being threaded in 17 right end of lower locating rod,
Also block is convexly equipped on left section of peripheral surface of lower locating rod 17 in the left end hole of corresponding datum hole along upper lower block convex shoulder
171, the opposite face of lower block convex shoulder 171 and lower stop part 18 is also the conical surface coordinated along inclined-plane with the hole of corresponding datum hole, but
The positioning slide unit 172 concordant with the big end periphery of lower block convex shoulder 171 is convexly equipped on the left end periphery of lower locating rod 17, it is lower fixed
The left end of position bar is provided with the limit end on the left of positioning slide unit, and the peripheral surface of the limit end is to be oriented to along the vertical direction
It is assemblied in the cylindrical surface in positioning slot hole 122.The hanging ring 21 of the upper end of pendulum 2 rotates dress by the axis that bearing extends around left and right
It fits on the assembly end 144 of locating rod 14, swing arm part 22 is the swing rod to overhang in 11 left side of substrate, and tup 23 is fixed
The central axis position of discoid counterweight disk body in swing rod lower end, tup 23 offers and the base on substrate 11 and gauge stand 16
Certainly 161 corresponding benchmark of pin hole moves pin hole.
Guide pad 13 includes the main block for the flat key shape being adapted to positioning slot hole 122, and the side of main block is convexly equipped with and adjusts
The block that the hole of whole slot hole 111 coordinates along block turns edge 131, and it 131 is that the annular of projection on the edge of main block is turned over that block, which turns edge,
Edge；Main block turns edge opposite one side equipped with two screw holes installed for trip bolt with annular.
Cubing will first be consolidated in assembly in upper locating rod 14 close-fitting to the hole of substrate 11 and with fixed pin in the present embodiment
It is fixed, then pass through the adjustment slot hole 111 of substrate 11 to be embedded in the caulking groove 121 of lengthened plate 12 guide pad 13（Lengthened plate 12 is with respect to base
Plate 11 slidably, to adjust size, to adapt to various sizes of parts）It is used in combination screw tight, then with screw and positioning
Gauge stand 16 is fixed composition matrix assembly (pin hole and lengthened plate after assembly in upper locating rod 14 and substrate 11 on the substrate 11 by pin
The center of 12 slot hole will overlap）；Swing rod is attached separately to composition pendulum 2 on hanging ring 21 and tup 23 to assemble；Matrix assemble and
Pendulum 2 fits through bearing and links together and fixed with bearing cap and screw（Pendulum 2, which assembles opposite matrix assembly, can carry out backswing
It is dynamic）；By dial gauge on gauge stand 16.
The use principle of cubing is as follows in the present embodiment：When matrix, which assembles, to be fixed, pendulum 2 assembles under gravity
It can always keep vertically downward, using gravity to vertical line once as benchmark, no matter matrix is assemblied in that position, pendulum 2 fills
The center line matched can all be overlapped with this gravitational vertical line.According to this principle, by the matrix assembly point in two sets of this cubings
Not being placed in parts to be detected has two different locations of position degree requirement, at this moment the assembly of pendulum 2 in two sets of cubings and matrix
The differential seat angle generated between assembly is exactly the error that this parts has two positions of position degree requirement.Dial gauge in this cubing
Effect be exactly be used for determine pendulum 2 assembly matrix assemble between differential seat angle.
Application method：（Casing is upsided down into placement and both ends cover upper flange）, first have to table, positioning pin be inserted into pendulum simultaneously
The benchmark fixed pin hole 161 and benchmark of hammer 2 and substrate 11 are moved in pin hole（The center line weight for making 2 center line of pendulum be assembled with matrix
It closes）, adjustment dial gauge makes gauge outfit withstand on the surface of pendulum 2, and list index is adjusted to zero.By the lower locating rod 17 of two sets of cubings
Being inserted into two end flanges of wall bushing will determine in a hole of opposite holes for position degree, and lower stop part 18 is used in combination to carry on the back tightly, then will
The upper locating rod 14 of matrix fit on is inserted into flange with respect in another hole of holes, being used in combination stop part 15 to carry on the back tightly, adds simultaneously
Positioning slot hole 122 on long slab 12 is inserted on the limit end of lower locating rod 17（See Fig. 5）, positioning pin is pulled out, is adjusted（Rotation）
Flange position, until making two dial gauges readings are consistent, then two flanges bondings are secured；At this moment two end face of flange circumference
The position in upper hole (has also just reached position degree requirement with regard to consistent）.
In the above-described embodiments, dial gauge carries in cubing, i.e., realizes swing detection and measurement by cubing itself,
In other embodiments, measuring piece can also be realized by way of tyre, as measuring piece uses micrometer, graduated scale, angulation
The tools such as device.
In the above-described embodiments, the connecting pin of pendulum is connected to the top of pedestal, and in other embodiments, pendulum can also
It is connected to the middle part or bottom of pedestal, or is directly connected with pedestal by the middle part of pendulum.
Claims (1)
1. pair positive rigging position degree cubing, which is characterized in that include the pedestal for being connected across on flange between two datum holes, together
A surface in flange erected state lower flange central axis in two datum holes selected on one flange, another is in
The underface of flange erected state lower flange central axis, rolling assembling is useful for around parallel with the axis of residing flange on pedestal
Or the pendulum that the pivot center overlapped is swung, it is equipped on pendulum for detecting the phase between pendulum and pedestal when pedestal erects
To the measuring piece of displacement scale or Angular Dimension, pedestal is that the length that a kind of substrate and lengthened plate are formed by connecting is telescopic flexible
Bridge, measuring piece are then the dial gauges being assemblied on pedestal, and the hypomere of substrate offers the adjustment slot hole extended up and down, adjustment length
Guiding movement is equipped with guide pad along the vertical direction in hole, and guide pad screw is connected in the upside of lengthened plate, so that lengthened plate is logical
It crosses guide pad and is oriented to along the vertical direction and be assemblied on substrate, the upper end of substrate is connected with positioning component, and upper positioning component includes
The right end threaded connection of the upper locating rod that left and right extends, upper locating rod is useful for block in the right end hole of datum hole along upper upper gear
Stop member, block is convexly equipped on the periphery of upper locating rod in the left end hole of datum hole along upper upper block convex shoulder, upper block convex shoulder and
The opposing end surface of upper stop part is the orientational cone-shaped surface coordinated along inclined-plane with the corresponding stomidium of datum hole, and in the periphery of upper locating rod
On be convexly equipped with the positioning convex shoulder adjacent with upper block convex shoulder, the peripheral surface for positioning convex shoulder is the cylinder being adapted to the perforation on substrate
Face, the outer diameter for positioning convex shoulder is less than the big end outer diameter of block convex shoulder, so that block convex shoulder is formed and can be kept off on the right side of positioning convex shoulder
Only the right ports of the perforation on substrate are along upper step surface, and offer on the periphery of positioning convex shoulder and consolidate for what pin installed
Fixed pin hole, and the left end of upper locating rod is additionally provided with the assembly end on the left of positioning convex shoulder, which is less than for outer diameter
The short axle end for positioning convex shoulder outer diameter, assembles and offers the tapped blind hole in axis part on the end face of end, in substrate
Portion is fixed with the gauge stand of L-type, and the one side wall of gauge stand is fixed in the right side plate face of substrate, another side wall is arranged at intervals on substrate
Right side, and the benchmark fixed pin hole installed for pin is offered in the fixed sidewall of gauge stand and the opposite site of substrate, lengthened plate
Upside is equipped with the caulking groove being embedded in for guide pad, is offered on the slot bottom of caulking groove and is installed for trip bolt and make guide pad by fastening spiral shell
Nail is fixed on the screw perforation on lengthened plate, the positioning slot hole extended up and down is offered on the downside of lengthened plate, in the positioning slot hole
It is equipped with lower positioning component, lower positioning component includes the lower locating rod being installed in positioning slot hole and is threaded in lower locating rod
The lower stop part of right end is also convexly equipped with block on left section of peripheral surface of lower locating rod in the left end hole of corresponding datum hole along upper
The opposite face of lower block convex shoulder, lower block convex shoulder and lower stop part is also the conical surface coordinated along inclined-plane with the hole of corresponding datum hole,
But the positioning slide unit concordant with the lower big end periphery of block convex shoulder is convexly equipped on the left end periphery of lower locating rod, lower locating rod
Left end is provided with the limit end on the left of positioning slide unit, and the peripheral surface of the limit end is to be oriented to be assemblied in along the vertical direction
The cylindrical surface in slot hole is positioned, pendulum is the single armed clock-type pendulum that hanging ring, swing arm part and tup are formed by connecting, the upper end of pendulum
For hanging ring by bearing around the axis rolling assembling extended is controlled on the assembly end of upper locating rod, swing arm part is overhang in substrate
The swing rod in left side, and tup is integrally fixed at the discoid counterweight disk body of swing rod lower end, the central axis position of tup offers
Benchmark corresponding with the benchmark fixed pin hole on substrate and gauge stand moves pin hole, when assembly, first by upper locating rod close-fitting to the hole of substrate
It is interior and fixed with fixed pin, then pass through the adjustment slot hole of substrate to be embedded in the caulking groove of lengthened plate and with screw tightly guide pad,
Gauge stand is fixed on substrate with screw and positioning pin again and forms matrix assembly；Swing rod is attached separately to form on hanging ring and tup
Pendulum assembles；Matrix assembles and pendulum fits through bearing and links together and fixed with bearing cap and screw；Dial gauge is filled
On gauge stand；Casing is upsided down into placement when use and both ends cover upper flange, is first had to table, positioning pin is inserted into simultaneously pendulum and
The benchmark fixed pin hole and benchmark of substrate are moved in pin hole, and adjustment dial gauge makes gauge outfit withstand on the surface of pendulum, and list index is adjusted
It is zero, lower locating rod insertion two end flanges of wall bushing of two sets of cubings will be determined to one of opposite two datum holes of position degree
In hole, it is used in combination the lower stop part back of the body tight, then the upper locating rod of matrix fit on is inserted into another hole of the opposite holes of flange, and
It is tight with the stop part back of the body, while the positioning slot hole on lengthened plate is inserted on the limit end of lower locating rod, pulls out positioning pin, adjustment
Rotary flange position, until making two dial gauges readings are consistent, then two flanges bondings are secured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510754696.1A CN105299005B (en) | 2015-11-09 | 2015-11-09 | Flange to positive assembly method and implement this method to positive rigging position degree cubing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510754696.1A CN105299005B (en) | 2015-11-09 | 2015-11-09 | Flange to positive assembly method and implement this method to positive rigging position degree cubing |
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| Publication Number | Publication Date |
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| CN105299005A CN105299005A (en) | 2016-02-03 |
| CN105299005B true CN105299005B (en) | 2018-07-20 |
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| CN107796281B (en) * | 2017-09-20 | 2019-07-23 | 江苏理工学院 | The detection instrument of end toper platform path in a kind of measurement deep hole |
| CN108398084A (en) * | 2018-02-01 | 2018-08-14 | 深圳前海优容科技有限公司 | A kind of battery pole piece detection device, system, laminating machine and method |
| CN108278959A (en) * | 2018-02-02 | 2018-07-13 | 成都飞机工业（集团）有限责任公司 | The method of Fast Measurement Method flange aperture angle |
| CN112146553B (en) * | 2020-09-24 | 2022-06-10 | 贵州凯星液力传动机械有限公司 | Design method and use method of inner inclined hole position size measuring device |
| CN114199308B (en) * | 2021-12-08 | 2023-07-18 | 沈阳工程学院 | Environment monitoring device for energy regulation and control for carbon neutralization and application method thereof |
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| CN201892537U (en) * | 2010-12-07 | 2011-07-06 | 江苏南通二建集团有限公司 | Template perpendicularity measuring ruler |
| CN202522187U (en) * | 2012-05-07 | 2012-11-07 | 渤海造船厂集团有限公司 | Caliper for calibrating flange perpendicularity |
| CN203489829U (en) * | 2013-10-21 | 2014-03-19 | 河南永锦能源有限公司云盖山煤矿二矿 | Pipeline flange welding correction scale |
| CN103925864B (en) * | 2014-03-14 | 2016-09-14 | 沪东中华造船(集团)有限公司 | Utilize ballast for cruising piping installs the method that positioning assisting tooling carries out installing location |
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