CN209246867U - A kind of tool measuring the bolt elongate amount with centre bore - Google Patents
A kind of tool measuring the bolt elongate amount with centre bore Download PDFInfo
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- CN209246867U CN209246867U CN201822208611.1U CN201822208611U CN209246867U CN 209246867 U CN209246867 U CN 209246867U CN 201822208611 U CN201822208611 U CN 201822208611U CN 209246867 U CN209246867 U CN 209246867U
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- measurement plate
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Abstract
The utility model belongs to bolt fastening technical field, and in particular to a kind of tool for measuring the bolt elongate amount with centre bore.Including measurement sleeve, measuring rod and measurement plate.The center bottoming hole of sleeve insertion cylinder face bolt is measured, and is adjacent to and is fixed in the bottoming hole upper boss plane of center；Measuring rod is co-axially located in the center bottoming hole of cylinder face bolt and passes through measurement sleeve；Measurement plate is fixed on the top of measuring rod.Measuring rod is made of bottom bar, intermediate bar and mandril, and bottom bar, intermediate bar and mandril are sequentially connected fixed composition from top to bottom.Measurement sleeve is made of lower sleeve portion and upper sleeve, and lower sleeve portion and upper sleeve are connected through a screw thread combination and fix.Measurement plate is made of lower measurement plate and upper measurement plate, and lower measurement plate and upper measurement plate are relatively parallel, and are each attached on mandril, and the distance for measuring lower measurement plate to upper measurement plate can measure bolt elongate amount.The utility model is segmented measuring tool, convenient for measurement, it is ensured that equipment or bolt fastening are in place.
Description
Technical field
The utility model belongs to bolt fastening technical field, and in particular to a kind of bolt elongate amount of the measurement with centre bore
Tool.
Background technique
The fastening of bolt is extremely important for the safe operation of nuclear power plant.Qinshan Second Nuclear Power Plant steam turbine is domestic
Four cylinder of HN650-6.41 type, six steam discharge, the inside and outside cylinder of high pressure and low-pressure internal cylinder split bolt are M52 or more band center
Hole and the bolt for carrying out bolt tension using heating method and fastening, nut are cover nut.By taking high pressure cylinder outer shell as an example, spiral shell
Bolt sum is 110, totally 8 kinds of specifications, has the lower flange on high pressure cylinder and screws in lower two kinds of forms of cylinder flange.Such as 1 institute of table
Show, according to design standard, bolt fastening need to be implemented according to certain tight angle of cold clamp force square and heat, and need to meet after fastening
Design elongation.
1 hp outer cylinder split bolt parameter list of table
| Serial number | Bolt specification | Cold clamp force square NM | The tight angle of heat | Elongation mm |
| 1 | M64×3×600 | 683.3 | 152° | 0.709 |
| 2 | M64×3×500 | 683.3 | 116° | 0.479 |
| 3 | M76×3×555 | 813.5 | 150° | 0.645 |
| 4 | M76×3×447 | 813.5 | 126° | 0.493 |
| 5 | M76×3×630 | 813.5 | 162° | 0.723 |
| 6 | M64×3×1170 | 683.3 | 298° | 1.635 |
| 7 | M76×3×1210 | 813.5 | 311° | 1.669 |
| 8 | M76×3×1232 | 813.5 | 318° | 1.709 |
During bolt is cold tight and heat tight rotating nuts, it inevitably will appear bolt and follow what nut rotated to ask
Topic, which results in the bolt screwed is controlled according to torque and angle, design requirement is not achieved in practical elongation, and due to spiral shell
Bolt nut is cover nut form, and bolt is not exposed, in addition the factors such as bolt length, space limitation, scene is without suitable special
Measure the tool of bolt elongate amount.Therefore, there are uncontrollable factors in tightening process for a bolt, eventually lead to cylinder leakage.
In summary, it would be highly desirable to need to design a kind of tool for measuring the bolt elongate amount with centre bore, guarantee band centre bore
Bolt be securable to position.
Summary of the invention
The purpose of this utility model is to design a kind of tool for measuring the bolt elongate amount with centre bore, is accurately simply surveyed
Measure the elongation of the bolt with centre bore.
In order to achieve the above objectives, technical solution adopted in the utility model are as follows:
A kind of tool measuring the bolt elongate amount with centre bore, including measurement sleeve, measuring rod and measurement plate.Measuring unit
The center bottoming hole of cylinder insertion cylinder face bolt, and be adjacent to and be fixed in the bottoming hole upper boss plane of center；Measuring rod is coaxially set
It sets in the center bottoming hole of cylinder face bolt and passes through measurement sleeve, measurement plate is fixed on the top of measuring rod.
Measuring rod is made of bottom bar, intermediate bar and mandril.Bottom bar, intermediate bar and mandril are the identical cylindrical bodies of outer diameter, are surveyed
The outer diameter of gauge rod and the internal diameter clearance fit of measurement sleeve.Bottom bar, intermediate bar and mandril are sequentially connected fixed composition from top to bottom.
The bottom of bottom bar is cone centre, and the top of bottom bar is nipple.
The bottom of intermediate bar is threaded hole, and the screw thread specification of threaded hole and the screw top of bottom bar match；Intermediate bar top
Portion has nipple identical with specification at the top of bottom bar.
The bottom of mandril is threaded hole, and the screw thread specification of threaded hole is consistent with the screw top of intermediate bar.Bottom bar, intermediate bar
It is successively threadedly coupled fixed composition from top to bottom with mandril.
The top of mandril is equipped with cylindrical boss, and the outer diameter of cylindrical boss is less than the outer diameter of mandril；Cylindrical boss
Top is screw thread.
Measurement sleeve is made of lower sleeve portion and upper sleeve, and lower sleeve portion and upper sleeve are connected through a screw thread combination admittedly
It is fixed.
Measurement plate is made of lower measurement plate and upper measurement plate, and lower measurement plate is parallel with upper measurement plate.
Lower measurement plate is square plate, and the center of plate has interstitial hole, and diameter and the mandril outer diameter transition of interstitial hole are matched
It closes.Lower measurement plate passes through mandril by interstitial hole, is fixed on the top of upper sleeve, is bonded pressing with the top of upper sleeve；
The in-plane of lower measurement plate is vertical with the length direction of upper sleeve.
Upper measurement plate is square plate, and the center of plate has interstitial hole, the diameter of interstitial hole and the circular cylindrical projection of mandril
Platform outer diameter transition fit, the thickness of upper measurement plate is greater than the height of the cylindrical boss of mandril, for installing measurement plate.Upper survey
Template passes through the cylindrical boss of mandril by interstitial hole, is screwed by the screw thread on cylindrical boss top by upper measurement with nut
Plate is pressed on the cylindrical boss of mandril.
Multiple measured holes are provided with beside the interstitial hole of upper measurement plate, the measurement for vernier depth gauge.
The tool of bolt elongate amount of the measurement with centre bore provided by the utility model is segmented, is suitable for power station steamer
The elongation measurement of machine casing split bolt and other bolts with a central hole before and after fastening, it is convenient to various spaces
The bolt elongate measurement with centre bore of environment, various specifications, it is ensured that equipment or bolt fastening in place, preferably serve enterprise
The quality and safety of industry production, maintenance, operation.
Detailed description of the invention
Fig. 1 is the tool schematic diagram for the bolt elongate amount with centre bore that measures；
Fig. 2 is bottom bar schematic diagram；
Fig. 3 is intermediate bar schematic diagram；
Fig. 4 is mandril schematic diagram；
Fig. 5 is lower sleeve portion；
Fig. 6 is upper sleeve；
Fig. 7 is lower measurement plate schematic diagram；
Fig. 8 is upper measurement plate schematic diagram；
In figure: 1 is cylinder face bolt；2 be cover nut；3 be bottom bar；4 be intermediate bar；5 be mandril；6 be lower sleeve portion；7 are
Upper sleeve；8 be lower measurement plate；9 be upper measurement plate.
Specific embodiment
The utility model is described in detail in the following with reference to the drawings and specific embodiments.
The utility model provides a kind of tool for measuring the bolt elongate amount with centre bore, including measurement sleeve, measurement
Bar and measurement plate.The center bottoming hole of sleeve insertion cylinder face bolt 1 is measured, and is adjacent to that be fixed on center bottoming hole upper boss flat
On face；Measuring rod is co-axially located in the center bottoming hole of cylinder face bolt 1 and passes through measurement sleeve, and measurement plate is fixed on measuring rod
Top.
As shown in Figure 1, measuring rod is made of bottom bar 3, intermediate bar 4 and mandril 5.Bottom bar 3, intermediate bar 4 and mandril 5 are outer diameters
Identical cylindrical body, the outer diameter of measuring rod and the internal diameter clearance fit of measurement sleeve.Bottom bar 3, intermediate bar 4 and mandril 5 from it is lower to
On be sequentially connected fixed composition.
As shown in Fig. 2, the bottom of bottom bar 3 is cone centre, positioning when for measuring；The top of bottom bar 3 is nipple.
As shown in figure 3, the bottom of intermediate bar 4 is threaded hole, the screw thread specification and the screw top phase of bottom bar 3 of threaded hole
Match；There is nipple identical with 3 top specification of bottom bar at the top of intermediate bar 4.
As shown in figure 4, the bottom of mandril 5 is threaded hole, the screw thread specification of threaded hole and the screw top one of intermediate bar 4
It causes.Bottom bar 3, intermediate bar 4 and mandril 5 are successively threadedly coupled fixed composition from top to bottom.
The top of mandril 5 is equipped with cylindrical boss, and the outer diameter of cylindrical boss is less than the outer diameter of mandril 5；Cylindrical boss
Top be screw thread.
As shown in Figure 5 and Figure 6, measurement sleeve is made of lower sleeve portion 6 and upper sleeve 7, lower sleeve portion 6 and upper sleeve
7, which are connected through a screw thread combination, fixes.
Measurement plate is made of lower measurement plate 8 and upper measurement plate 9, and lower measurement plate 8 is parallel with upper measurement plate 9.
As shown in fig. 7, lower measurement plate 8 is square plate, the center of plate has interstitial hole, the diameter and mandril of interstitial hole
5 outer diameter transition fits.Lower measurement plate 8 passes through mandril 5 by interstitial hole, the top of upper sleeve 7 is fixed on, with upper sleeve 7
Top be bonded flatten；The in-plane of lower measurement plate 8 is vertical with the length direction of upper sleeve 7.
As shown in figure 8, upper measurement plate 9 is square plate, the center of plate has interstitial hole, the diameter and mandril of interstitial hole
5 cylindrical boss outer diameter transition fit, the thickness of upper measurement plate 9 is greater than the cylindrical boss height of mandril 5, for installing
Measurement plate 9.Upper measurement plate 9 passes through the cylindrical boss of mandril 5 by interstitial hole, passes through the spiral shell on cylindrical boss top with nut
Line, which screws, is pressed in upper measurement plate 9 on the cylindrical boss of mandril 5.
Multiple measured holes are provided with beside the interstitial hole of upper measurement plate 9, the measurement for vernier depth gauge.
When measurement, measurement plate 8 is passed through under the measurement hole measurement of upper measurement plate 9 with vernier depth gauge to upper measurement plate 9
Distance.One data of cold next and hot next each measurement, two groups of data, which are subtracted each other, obtains the practical elongation of bolt.
The technical solution of the utility model be segmented measuring tool, be suitable for power station steam turbine casing split bolt with
And elongation measurement of other bolts with a central hole before and after fastening, the convenient band to various space environments, various specifications
The bolt elongate measurement of centre bore, it is ensured that equipment or bolt fastening in place, preferably serve enterprise's production, maintenance, operation
Quality and safety.
Claims (10)
1. a kind of tool for measuring the bolt elongate amount with centre bore, it is characterised in that: including measurement sleeve, measuring rod and measurement
Plate, the center bottoming hole of measurement sleeve insertion cylinder face bolt (1), and be adjacent to and be fixed in bottoming hole upper boss plane, it measures
Bar is co-axially located in the center bottoming hole of cylinder face bolt (1) and passes through measurement sleeve, and measurement plate is fixed on the top of measuring rod.
2. as described in claim 1 measurement the bolt elongate amount with centre bore tool, it is characterised in that: the measuring rod by
Bottom bar (3), intermediate bar (4) and mandril (5) composition, bottom bar (3), intermediate bar (4) and mandril (5) are the identical cylindrical bodies of outer diameter,
The outer diameter of measuring rod and the internal diameter clearance fit of measurement sleeve, bottom bar (3), intermediate bar (4) and mandril (5) successively connect from top to bottom
Connect fixed composition.
3. the tool of bolt elongate amount of the measurement with centre bore as claimed in claim 2, it is characterised in that: the bottom bar (3)
Bottom be cone centre, the top of bottom bar (3) is nipple.
4. the tool of bolt elongate amount of the measurement with centre bore as claimed in claim 3, it is characterised in that: the intermediate bar
(4) bottom is threaded hole, and the screw thread specification of threaded hole and the screw top of bottom bar (3) match, and is had at the top of intermediate bar (4)
Nipple identical with specification at the top of bottom bar (3).
5. the tool of bolt elongate amount of the measurement with centre bore as claimed in claim 4, it is characterised in that: the mandril (5)
Bottom be threaded hole, the screw thread specification of threaded hole is consistent with the screw top of intermediate bar (4), bottom bar (3), intermediate bar (4) and
Mandril (5) is successively threadedly coupled fixed composition from top to bottom.
6. the tool of bolt elongate amount of the measurement with centre bore as claimed in claim 2, it is characterised in that: the mandril (5)
Top be equipped with cylindrical boss, the outer diameter of cylindrical boss is less than the outer diameter of mandril (5), and the top of cylindrical boss is spiral shell
Line.
7. the tool of bolt elongate amount of the measurement with centre bore as claimed in claim 6, it is characterised in that: the measurement sleeve
It is made of lower sleeve portion (6) and upper sleeve (7), lower sleeve portion (6) and upper sleeve (7) are connected through a screw thread combination and fix.
8. as claimed in claim 7 measurement the bolt elongate amount with centre bore tool, it is characterised in that: the measurement plate by
Lower measurement plate (8) and upper measurement plate (9) composition, lower measurement plate (8) are parallel with upper measurement plate (9).
9. the tool of bolt elongate amount of the measurement with centre bore as claimed in claim 8, it is characterised in that: the lower measurement plate
It (8) is square plate, the center of plate has interstitial hole, the diameter and mandril (5) outer diameter transition fit of interstitial hole, lower measurement plate
(8) mandril (5) are passed through by interstitial hole, are fixed on the top of upper sleeve (7), are bonded pressing with the top of upper sleeve (7),
The in-plane of lower measurement plate (8) is vertical with the length direction of upper sleeve (7).
10. the tool of bolt elongate amount of the measurement with centre bore as claimed in claim 8 or 9, it is characterised in that: the upper survey
Template (9) is square plate, and the center of plate has interstitial hole, is provided with multiple measured holes beside interstitial hole, interstitial hole
The thickness of the cylindrical boss outer diameter transition fit of diameter and mandril (5), upper measurement plate (9) is greater than mandril (5) cylindrical boss
Height, upper measurement plate (9) by interstitial hole pass through mandril (5) cylindrical boss, with nut pass through cylindrical boss top
Screw thread screw upper measurement plate (9) be pressed on the cylindrical boss of mandril (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822208611.1U CN209246867U (en) | 2018-12-27 | 2018-12-27 | A kind of tool measuring the bolt elongate amount with centre bore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822208611.1U CN209246867U (en) | 2018-12-27 | 2018-12-27 | A kind of tool measuring the bolt elongate amount with centre bore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209246867U true CN209246867U (en) | 2019-08-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822208611.1U Active CN209246867U (en) | 2018-12-27 | 2018-12-27 | A kind of tool measuring the bolt elongate amount with centre bore |
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| CN (1) | CN209246867U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111811364A (en) * | 2020-07-06 | 2020-10-23 | 江苏核电有限公司 | Tool and method for measuring bolt elongation of high-pressure cylinder of steam turbine |
-
2018
- 2018-12-27 CN CN201822208611.1U patent/CN209246867U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111811364A (en) * | 2020-07-06 | 2020-10-23 | 江苏核电有限公司 | Tool and method for measuring bolt elongation of high-pressure cylinder of steam turbine |
| CN111811364B (en) * | 2020-07-06 | 2024-05-14 | 江苏核电有限公司 | Tool and method for measuring bolt elongation of high-pressure cylinder of steam turbine |
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