CN104708580B - A kind of installation tool and its application method of compressor stator ring - Google Patents
A kind of installation tool and its application method of compressor stator ring Download PDFInfo
- Publication number
- CN104708580B CN104708580B CN201510076795.9A CN201510076795A CN104708580B CN 104708580 B CN104708580 B CN 104708580B CN 201510076795 A CN201510076795 A CN 201510076795A CN 104708580 B CN104708580 B CN 104708580B
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- ring
- sleeve
- thimble
- fixed blade
- installation tool
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
Abstract
The present invention relates to a kind of installation tool of compressor stator ring, shift(ing) ring is inserted in first sleeve and second sleeve inner cavity；Partition is equipped with inside first sleeve, partition is equipped with through-hole；The inner wall of second sleeve is equipped with the matched groove of protrusion in several limit sections with shift(ing) ring；Pressure spring is also arranged on the leading portion of shift(ing) ring.The present invention also provides the application methods of the installation tool, second sleeve is fixed on blower casing, then fixed blade ring ring segment is packed into the annular groove of blower casing, with on thimble top to fixed blade ring ring segment outer circumference surface, continue to slide fixed blade ring ring segment along annular groove, when thimble end pops up suddenly, the radial slot of fixed blade ring ring segment is aligned with radial hole to be finished.Installation tool and application method provided by the invention, enable the radial hole precise alignment on the radial slot and blower casing on fixed blade ring slip ring, positioning pin, which is not necessarily to live secondary operation, to be smoothly inserted into, and the installation of the fixed blade ring ring segment of different depth, same tool can be used to complete.
Description
Technical field
The present invention relates to the installation tool of gas turbine manufacturing technology field more particularly to a kind of compressor stator ring and its
Application method.
Background technique
Compressor be it is a kind of using rotating mechanical energy to flow through it air do work, with improve air pressure impeller dress
It sets.Typical case's compressor for gas turbines is generally multiatage axial flow, and every level-one is by rotor blade row and a stator
Blade row is constituted, in general, each stator blade end of stator blade row is all connected on a slip ring, forms the stator blade of monoblock type
Ring.Some known fixed blade rings can circumferentially divide several ring segments, and when installation, each ring segment circumferentially slides into compressor by slip ring
In the circumferential groove of shell.
Currently, in order to avoid ring segment in shell circumferential groove circumferential play, existing technical solution is using radial positioning
Pin is to be fixed fixed blade ring ring segment, and a positioning pin fixes a ring segment.
In this method, the premise using the fixed fixed blade ring ring segment of radial positioning pin is to need to open on blower casing
There is radial through-hole, is provided with radial slot on the slip ring of fixed blade ring.When installation, the accurate position of the circumferential groove that fixed blade ring is first slid into shell
It sets, is aligned the radial through-hole on the radial slot and shell on slip ring, be then inserted into radial positioning pin from shell exterior.
But in the prior art, operation that fixed blade ring is slid into casing circumference slot is pulled by several worker's Manual push-pulls
It completes, precision is relatively low, and the often misalignment of the through-hole on radial slot and shell on fixed blade ring slip ring has certain offset
Amount.In order to be inserted into positioning pin smoothly, worker needs to measure the offset, and before processing positioning pin according to offset scene
End.The installation effectiveness for greatly reducing fixed blade ring in this way increases cost of labor, and positioning pin herein is lost exchange
Property feature, after also increasing dismounting maintenance fixed blade ring inconvenience.
In the prior art, the tool of dedicated installation fixed blade ring ring segment is also had devised, but due to its specificity, it is different deep
The fixed blade ring installation of degree need to use different tools, and thimble overhang adjustable extent is small or even almost non-adjustable.
Therefore, against the above deficiency, it is desirable to provide a kind of installation tool of compressor stator ring, and its user is provided
Method.
Summary of the invention
(1) technical problems to be solved
The technical problem to be solved in the present invention is to provide the installation tool and its application method of a kind of compressor stator ring, peaces
When filling fixed blade ring, with the help of the tool, the radial hole on the radial slot and blower casing on fixed blade ring slip ring can be precisely
Alignment, positioning pin, which is not necessarily to live secondary operation, to be smoothly inserted into, and the installation of the fixed blade ring ring segment of different depth, can use
Same tool is completed, and solves the problems, such as that the installation effectiveness of fixed blade ring is low.
(2) technical solution
In order to solve the above-mentioned technical problems, the present invention provides a kind of installation tool of compressor stator ring, including it is coaxial
Thimble, capping, first sleeve, second sleeve and the shift(ing) ring of setting, capping, first sleeve, second sleeve are from top to bottom successively
Connection, shift(ing) ring are inserted in first sleeve and second sleeve inner cavity；
Thimble is threadedly coupled after passing through capping, first sleeve, second sleeve with shift(ing) ring, and the both ends of thimble are stretched out respectively
Capping and the second sleeve, thimble stretch out the diameter in the end diameter and fixed blade ring ring segment to be installed of the part of second sleeve
It is matched to slot；
Shift(ing) ring from top to bottom successively includes leading portion, middle section and limit section, is equipped with partition inside first sleeve, sets on partition
There is through-hole, the internal diameter of through-hole is greater than the outer diameter of leading portion and is less than the outer diameter in middle section；The inner wall of second sleeve is equipped with several and limit
The matched groove of protrusion in the section of position；Pressure spring is also arranged on leading portion, one end of pressure spring connects the end face of the partition, the other end
It connects the middle section and limits the connection surface of section.
It preferably, further include handle, handle is fixedly connected with the part that thimble stretches out capping.
Preferably, aforementioned second sleeve outer wall is equipped with the fixed part conveniently twisted and for connecting with blower casing
External screw thread.
Preferably, the cross sectional shape of aforementioned fixed part is regular hexagon.
Preferably, the top of thimble is additionally provided with bulge loop, and bulge loop is located at the partition top of first sleeve inner cavity, bulge loop it is outer
Diameter is greater than the internal diameter of through-hole on partition.
Preferably, aforementioned capping, first sleeve and second sleeve are successively threadedly coupled.
The present invention also provides a kind of application methods of the installation tool of compressor stator ring, include the following steps:
Thimble, is retracted into the inside of second sleeve by S1, rotation thimble, and second sleeve insertion then need to be installed fixed blade ring
It is in the radial hole of the blower casing of ring segment and fixed；
S2, fixed blade ring ring segment to be installed is inserted into the annular groove of blower casing, slides fixed blade ring ring segment, works as fixed blade ring
When the slip ring of ring segment shelters from radial hole completely, stop sliding fixed blade ring ring segment；
S3, rotation thimble make thimble to moving inside blower casing, until thimble end compresses fixed blade ring ring segment, top
Until needle cannot rotate again；
S4, the edge rotation thimble opposite with direction of rotation in step S3, reduce thimble to the pressure of fixed blade ring ring segment, make quiet
Leaf joint can be slided along annular groove；
S5, continue to slide fixed blade ring ring segment along annular groove, when the end that thimble stretches out second sleeve is popped up suddenly, fixed blade ring
The radial slot of ring segment is aligned with radial hole；
S6, second sleeve is removed from radial hole, and positioning pin is inserted into radial hole.
Preferably, in aforementioned S1, second sleeve is fixed on radial hole, and method is the fixation twisted in second sleeve
Portion cooperates external screw thread and blower casing in second sleeve.
Preferably, thimble is rotated by rotating handle.
(3) beneficial effect
Above-mentioned technical proposal of the invention has the advantages that
The present invention provides a kind of installation tool of compressor stator ring, it is inserted in first sleeve and second sleeve inner cavity
Shift(ing) ring, shift(ing) ring from top to bottom successively include leading portion, middle section and limit section；It is equipped with partition inside first sleeve, is set on partition
There is through-hole, the internal diameter of through-hole is greater than the outer diameter of the leading portion of shift(ing) ring and is less than the outer diameter in the middle section of shift(ing) ring；Second sleeve it is interior
Wall is equipped with the matched groove of protrusion in several limit sections with shift(ing) ring；It is also arranged with pressure spring on the leading portion of shift(ing) ring, presses
Spring is compressive state.
The present invention also provides the application method of the installation tool, first by thimble retraction second sleeve before installation, and will
Second sleeve is fixed on blower casing, and fixed blade ring ring segment is then packed into the annular groove of blower casing, is revolved using handle
Turn thimble, makes thimble to moving inside blower casing, until thimble end is pressed in fixed blade ring ring segment excircle with certain pressure
On face, continuing to slide fixed blade ring along annular groove, the radial slot on fixed blade ring ring segment outer circumference surface skims over the moment of cylinder radial hole,
Thimble distal process is so bound in fixed blade ring radial slot, and the radial slot of fixed blade ring ring segment is aligned with radial hole to be finished.
The setting of shift(ing) ring in the present invention can make thimble in the blocking not by fixed blade ring, change thimble and stretch out
The length of second sleeve part；In blocking of the thimble by fixed blade ring, without axial movement, can adjust thimble end with
The pressure of fixed blade ring ring segment outer circumference surface.
Due in the present invention, the length that thimble stretches out second sleeve be can change, and adjustable extent is big, different depth it is quiet
The same installation tool, which can be used, in leaf joint can be completed installation, reduce the usage amount of tool, save resource, and be convenient for
The management of tool.
The application method of installation tool provided by the invention is simple, and work efficiency is high, solves and not can guarantee positioning pin zero
The interchangeability of part the problem of.
In conclusion the present invention has the advantage that
When installing fixed blade ring, positioning pin can be made, which to be not necessarily to live secondary operation, to be smoothly packed into, thus, it increases
The installation effectiveness of fixed blade ring ensure that the positioning pin interchangeability of parts feature.The compact overall structure of installation tool, using rise
Next more convenient, economic effect is obvious.Moreover, thimble extension elongation can be adjusted in a certain range, to adapt to
The installation of the fixed blade ring of different groove depths, use scope are wider.Use scope of the invention is not limited only to compressor stator ring,
Part including other with similar installation method.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of installation tool of the present invention；
Fig. 2 is the installation diagram of installation tool of the present invention；
Fig. 3 is the cross-sectional view at shift(ing) ring of the present invention；
Schematic diagram when Fig. 4 is present invention installation fixed blade ring ring segment.
In figure: 11: handle；12: thimble；13: capping；14: first sleeve；15: second sleeve；16: shift(ing) ring；17: pressure
Spring；2: blower casing；21: the external screw thread of thimble；3: fixed blade ring ring segment；41: partition；51: groove；52: fixed part；53: outer
Screw thread；61: protrusion；62: limit section；63: middle section；64: leading portion；.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment one
As shown in Figure 1-3, the installation tool of compressor stator ring provided in an embodiment of the present invention, the top including coaxial arrangement
Needle 12, capping 13, first sleeve 14, second sleeve 15 and shift(ing) ring 16.
Capping 13, first sleeve 14, second sleeve 15 are from top to bottom sequentially connected, and cover 13 bottom interior wall and first set
The bottom interior wall of cylinder 14 is equipped with internal screw thread, and the top exterior walls of first sleeve 14 and the top exterior walls of second sleeve 15 are equipped with outer spiral shell
Therefore line is threadedly coupled capping 13, first sleeve 14 and second sleeve 15 successively.Thimble 12 passes through capping 13, first
Sleeve 14, second sleeve 15 and shift(ing) ring 16, shift(ing) ring 16 is inserted in 15 inner cavity of first sleeve 14 and second sleeve, and is pushed up
The corresponding position that shift(ing) ring 16 is installed on needle 12 is equipped with external screw thread 21, and 16 inner wall of shift(ing) ring is equipped with internal screw thread, makes shift(ing) ring 16
It can be threadedly coupled with thimble 12, the shift(ing) ring 16 from top to bottom successively includes leading portion 64, middle section 63 and limit section 62, leading portion
64, the outer diameter of middle section 63 and limit section 62 is sequentially increased, and the surface of leading portion 64 and 63 interconnecting piece of middle section is the conical surface.
Capping 13 and second sleeve 15 are stretched out in 12 both ends of thimble respectively, and thimble 12 stretches out the end of the part of second sleeve 15
Diameter is matched with the radial slot in fixed blade ring ring segment 3 to be installed, i.e. diameter in the end diameter of the part and fixed blade ring ring segment 3
It is identical to slot matching circumferential width, so that the end of thimble 12 is smoothly inserted into the radial slot in fixed blade ring ring segment 3；Thimble 12 is stretched
The part of capping 13 is equipped with handle 11 out, and handle 11 is fixedly connected with the end of the part.Bulge loop is additionally provided on thimble 12, it is convex
Ring is located at 12 top of thimble and is located at 14 inner cavity of first sleeve.
Partition 41 is equipped with inside first sleeve 14, partition 41 is equipped with through-hole, before the internal diameter of through-hole is greater than shift(ing) ring 16
The outer diameter of section 64 and the outer diameter in the middle section 63 less than shift(ing) ring 16 enable the leading portion 64 of 12 lower part of thimble and shift(ing) ring 16 to pass through logical
Hole makes the middle section 63 of shift(ing) ring 16 cannot pass through through-hole；Bulge loop on thimble 12 is located at 41 top of partition in first sleeve 14,
The outer diameter of bulge loop is greater than the internal diameter of through-hole on partition 41.The effect of partition 41 is by the moving area of the bulge loop on thimble 12 and movement
The moving area of ring 16 separates, and makes the range of 41 or more the partition of 14 inner cavity of moving range first sleeve of bulge loop, shift(ing) ring
Range of 16 moving range between 15 inner chamber bottom surface of partition 41 and second sleeve.
The inner wall of second sleeve 15 is equipped with the matched groove 51 of protrusion 61 in several limit sections with shift(ing) ring 16, convex
Rise 61 and groove 51 be combined together use, can make shift(ing) ring 16 that can only move along sleeve axis direction, not can be carried out
Rotation.
15 outer wall of second sleeve is equipped with external screw thread 53 and fixed part 52.External screw thread 53 be used for the shell 2 of compressor into
Row connection, the cross sectional shape of fixed part 52 are regular hexagon, convenient when external screw thread 53 is connect with blower casing 2, to its into
Row is twisted.
Pressure spring 17, the end face of the end thereof contacts partition 41 of pressure spring 17, pressure spring 17 are also arranged on the leading portion 64 of shift(ing) ring 16
Another end in contact shift(ing) ring 16 middle section 63 and limit section 62 connection surface, pressure spring 17 be compressive state.
In use, being in free state if not having a strong effect on 12 axis of thimble, i.e. thimble 12 stretches out second sleeve 15
When outer end is not stopped by fixed blade ring ring segment 3, then shift(ing) ring 16 is attached to second sleeve 15 by pressure by pressure spring 17
Inner chamber bottom surface.By handle 11 rotate thimble 12, thimble 12 can along its axis or it is front or rear move, since thimble 12 will not be to shifting
Rotating ring 16 generates the effect of power, therefore shift(ing) ring 16 will not move.It is such as quiet after the movement on 12 axis of thimble is restricted
The blocking of leaf joint ring segment 3 rotates thimble by handle 11, it is made to move forward elongation, due to being limited by front, thimble 12
It will not move, but can play the role of opposite force to shift(ing) ring 16, therefore shift(ing) ring 16 can be detached from 15 inner chamber bottom surface of second sleeve, edge
Sleeve axis reverse movement, shift(ing) ring 16 leave 15 inner chamber bottom surface of second sleeve distance it is bigger, thimble 12 is to fixed blade ring ring segment 3
Pressure is bigger.
In the present embodiment, shift(ing) ring 16 can only move between 15 inner chamber bottom surface of partition 41 and second sleeve of first sleeve 14
It is dynamic.When shift(ing) ring 16 is moved along axis positive direction, when end face touches 15 inner chamber bottom surface of second sleeve, mobile cut-off.Work as shifting
When rotating ring 16 is moved along axis opposite direction, connection leading portion 64 and middle section 63 taper-face contact to first sleeve 14 partition 41 when,
Mobile cut-off.
Embodiment two
The embodiment of the invention provides a kind of application methods of the installation tool of compressor stator ring, as shown in figure 4, including
Following steps:
Thimble 12, is retracted into the inside of second sleeve 15 by S1, rotating handle 11, then needs to pacify by the insertion of second sleeve 15
It fills in the radial hole of the blower casing 2 of fixed blade ring ring segment 3 and fixed；The method that second sleeve 15 is fixed on radial hole is,
The fixed part 52 in second sleeve 15 is twisted, external screw thread 53 and blower casing 2 in second sleeve 15 are cooperated.
S2, fixed blade ring ring segment 3 to be installed is inserted into the annular groove of blower casing 2, fixed blade ring ring segment 3 is slided, when quiet
When the slip ring of leaf joint ring segment 3 shelters from radial hole completely, stop sliding fixed blade ring ring segment 3；
S3, rotating handle 11 make thimble 12 to moving inside blower casing 2, until 12 end of thimble compresses fixed blade ring
Ring segment 3 until thimble 12 cannot rotate again, makes thimble reach maximum value to the pressure of fixed blade ring；At this point, the leading portion of shift(ing) ring 16
64 contact with the conical surface of the interconnecting piece in middle section 63 with partition 41, prevent thimble 12 from moving or rotating again.S4, edge and step
The opposite rotating handle 11 in direction of rotation in rapid S3, is detached from the conical surface of the interconnecting piece in leading portion 64 and middle section 63 and partition 41
Several millimeters enable fixed blade ring to slide along annular groove to reduce thimble to the pressure of fixed blade ring ring segment；Prevent fixed blade ring ring segment from moving
When dynamic, there is stuck situation.
The reason of carrying out step S2 and S3 are as follows:
One, first increase the pressure of thimble and fixed blade ring to maximum value, is then reduced again from maximum value, this helps to press
The control of power.
Two, when pressure maximum, the conical surface and baffle contacts, thimble cannot along axial reverse movement, if do not make the conical surface with every
Both plates are detached from, and in fixed blade ring sliding process, thimble and fixed blade ring have a possibility that stuck
S5, continue to slide fixed blade ring ring segment 3 along annular groove, when the end that thimble 12 stretches out second sleeve 15 is popped up suddenly,
The radial slot of fixed blade ring ring segment 3 is aligned with radial hole, and limits the movement of fixed blade ring ring segment 3.
S6, second sleeve 15 is removed from radial hole, and positioning pin is inserted into radial hole.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: it still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features；
And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (9)
1. a kind of installation tool of compressor stator ring, comprising: thimble, it is characterised in that: the thimble including coaxial arrangement,
Capping, first sleeve, second sleeve and shift(ing) ring, the capping, first sleeve, second sleeve are from top to bottom sequentially connected, institute
Shift(ing) ring is stated to be inserted in the first sleeve and the second sleeve inner cavity；
The thimble is threadedly coupled after passing through the capping, first sleeve, second sleeve with the shift(ing) ring, and the both ends of thimble
Stretch out the capping and the second sleeve respectively, the thimble stretches out the end diameter of the part of second sleeve and to be installed
Radial slot matching in fixed blade ring ring segment；
The shift(ing) ring from top to bottom successively includes leading portion, middle section and limit section, is equipped with partition inside the first sleeve, described
Partition is equipped with through-hole, and the internal diameter of the through-hole is greater than the outer diameter of the leading portion and is less than the outer diameter in middle section；The second sleeve
Inner wall be equipped with several matched grooves of protrusion in the limit section；Pressure spring, the pressure are also arranged on the leading portion
One end of spring connects the end face of the partition, and the other end connects the middle section and limits the connection surface of section.
2. the installation tool of compressor stator ring according to claim 1, it is characterised in that: it further include handle, the hand
Handle is fixedly connected with the part that the thimble stretches out capping.
3. the installation tool of compressor stator ring according to claim 1, it is characterised in that: on the second sleeve outer wall
External screw thread equipped with the fixed part conveniently twisted and for being connect with blower casing.
4. the installation tool of compressor stator ring according to claim 3, it is characterised in that: the section shape of the fixed part
Shape is regular hexagon.
5. the installation tool of compressor stator ring according to claim 1, it is characterised in that: the top of the thimble is also set
There is bulge loop, and the bulge loop is located within the first sleeve the partition top of chamber, the outer diameter of the bulge loop is greater than on the partition
The internal diameter of through-hole.
6. the installation tool of compressor stator ring according to claim 1, it is characterised in that: the capping, first sleeve
It is successively threadedly coupled with second sleeve.
7. a kind of application method of the installation tool of compressor stator ring described in -6 according to claim 1, it is characterised in that: packet
Include following steps:
The thimble, is retracted into the inside of the second sleeve by S1, the rotation thimble, then needs to pacify by second sleeve insertion
Fill the radial hole of the blower casing of fixed blade ring ring segment；
S2, fixed blade ring ring segment to be installed is inserted into the annular groove of the blower casing, slides the fixed blade ring ring segment, works as institute
When stating the slip ring of fixed blade ring ring segment and sheltering from the radial hole completely, stop sliding the fixed blade ring ring segment；
S3, the rotation thimble make thimble to moving inside the blower casing, until thimble end compresses fixed blade ring ring
Section, until thimble cannot rotate again；
S4, the edge rotation thimble opposite with direction of rotation in step S3, reduce thimble to the pressure of fixed blade ring ring segment, make quiet
Leaf joint can be slided along annular groove；
S5, continue to slide the fixed blade ring ring segment along annular groove, it is described quiet when the end that thimble stretches out second sleeve is popped up suddenly
The radial slot of leaf joint ring segment is aligned with the radial hole；
S6, second sleeve is removed from the radial hole, and positioning pin is inserted into radial hole.
8. the application method of the installation tool of compressor stator ring according to claim 7, it is characterised in that: the S1
In, the second sleeve is fixed on the radial hole, and method is the fixed part twisted in second sleeve, makes second sleeve
On external screw thread and the blower casing cooperate.
9. the application method of the installation tool of compressor stator ring according to claim 7, it is characterised in that: pass through rotation
Thimble described in the rotatable handle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510076795.9A CN104708580B (en) | 2015-02-12 | 2015-02-12 | A kind of installation tool and its application method of compressor stator ring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510076795.9A CN104708580B (en) | 2015-02-12 | 2015-02-12 | A kind of installation tool and its application method of compressor stator ring |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104708580A CN104708580A (en) | 2015-06-17 |
| CN104708580B true CN104708580B (en) | 2019-10-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510076795.9A Active CN104708580B (en) | 2015-02-12 | 2015-02-12 | A kind of installation tool and its application method of compressor stator ring |
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| Country | Link |
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| CN (1) | CN104708580B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112621652B (en) * | 2020-11-11 | 2023-03-24 | 中国航发贵州黎阳航空动力有限公司 | Assembly method of front intermediate bearing cover of aero-engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3783496A (en) * | 1968-12-19 | 1974-01-08 | J Siler | Method of assembling members having misaligned holes |
| CN102886680A (en) * | 2012-09-24 | 2013-01-23 | 黑龙江建龙钢铁有限公司 | Method for aligning flange disc hole in process of replacing large-diameter valve |
| CN203245761U (en) * | 2013-04-24 | 2013-10-23 | 哈尔滨飞机工业集团有限责任公司 | Push-pull-type positioning device |
| CN203293117U (en) * | 2013-06-27 | 2013-11-20 | 宁波市鄞州德来特技术有限公司 | Tool sleeve |
| CN203649891U (en) * | 2013-11-19 | 2014-06-18 | 浙江吉利汽车研究院有限公司 | Alignment assisting device used for correcting transmission reverse gear shaft threaded hole |
-
2015
- 2015-02-12 CN CN201510076795.9A patent/CN104708580B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3783496A (en) * | 1968-12-19 | 1974-01-08 | J Siler | Method of assembling members having misaligned holes |
| CN102886680A (en) * | 2012-09-24 | 2013-01-23 | 黑龙江建龙钢铁有限公司 | Method for aligning flange disc hole in process of replacing large-diameter valve |
| CN203245761U (en) * | 2013-04-24 | 2013-10-23 | 哈尔滨飞机工业集团有限责任公司 | Push-pull-type positioning device |
| CN203293117U (en) * | 2013-06-27 | 2013-11-20 | 宁波市鄞州德来特技术有限公司 | Tool sleeve |
| CN203649891U (en) * | 2013-11-19 | 2014-06-18 | 浙江吉利汽车研究院有限公司 | Alignment assisting device used for correcting transmission reverse gear shaft threaded hole |
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| Publication number | Publication date |
|---|---|
| CN104708580A (en) | 2015-06-17 |
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