CN114833763A - Sealing ring dismounting device and sealing ring dismounting method - Google Patents
Sealing ring dismounting device and sealing ring dismounting method Download PDFInfo
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- CN114833763A CN114833763A CN202110142444.9A CN202110142444A CN114833763A CN 114833763 A CN114833763 A CN 114833763A CN 202110142444 A CN202110142444 A CN 202110142444A CN 114833763 A CN114833763 A CN 114833763A
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- sealing ring
- screw
- screw rod
- guide
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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
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
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- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
Abstract
The invention discloses a sealing ring dismounting device and a sealing ring dismounting method, relates to the field of aero-engines, and aims to realize convenient dismounting of a sealing ring. The seal ring dismounting device comprises a base, a screw, a propping piece and a guide piece. The base has a first mounting hole. The screw rod is rotatably arranged in the first mounting hole; the abutting piece is provided with a first threaded hole, the screw rod penetrates through the first threaded hole, and the screw rod is in threaded fit with the abutting piece. The guide piece is connected with both the abutting piece and the base, and the guide piece is constructed to play a role in guiding the movement of the abutting piece relative to the axial direction of the screw rod. Above-mentioned technical scheme has realized that interference fit's the ring of obturating is dismantled in the non-open space, is particularly useful for the environment that this kind of unable slide hammer of using of the ring of obturating, unable use press are dismantled.
Description
Technical Field
The invention relates to the field of aircraft engines, in particular to a sealing ring dismounting device and a sealing ring dismounting method.
Background
In order to guarantee the assembly stability of parts, the engine rotor parts are mostly in interference fit, but considering that the rotor parts rotate at high speed in the working process, if the jackscrew holes are formed in the parts, stress concentration is easily caused, and the jackscrew holes are designed on the rotor parts and can be avoided. In the low-pressure turbine structure of the aircraft engine, a sealing ring is arranged on a conical wall through an interference spigot, a turbine disc is arranged on the outer side of the sealing ring, and a turbine shaft (the shaft length is about 2000mm) is arranged on the inner side of the sealing ring. In the related art, the parts which are in interference fit and have no jackscrew hole are disassembled by adopting a puller.
The inventor finds that at least the following problems exist in the prior art: the mode of adopting the puller to dismantle is colluded through the drag hook of a plurality of dispersions and is got the dismantlement groove (or dismantle the flange platform) of waiting to dismantle the part, and the other end is fixed and is exerted the dismantlement power on waiting to dismantle other parts that the part is adjacent. The inventor finds that in a low-pressure turbine structure of an aeroengine, parts adjacent to a sealing ring comprise a turbine disc, a conical wall and a turbine shaft, and the three parts do not have mounting holes capable of being connected with a puller, so that the puller is difficult to be simply fixed on the turbine disc, the conical wall and the turbine shaft. In addition, because the aperture of the disk center of the turbine disk is large, if the turbine disk is adopted to fix and disassemble the tool, the special puller is inevitably large in size, high in production cost and large in overall size of the disassembling tool, and the operation is not convenient; because the low-pressure turbine shaft is longer, if the low-pressure turbine shaft is adopted to fix the dismounting tool, the dismounting tool is longer, the production cost is higher, the overall dimension of the dismounting tool is larger, and the operation is more difficult.
Disclosure of Invention
The invention provides a sealing ring dismounting device and a sealing ring dismounting method, which are used for realizing convenient dismounting of a sealing ring.
The embodiment of the invention provides a seal ring dismounting device, which comprises:
a base having a first mounting hole;
a screw rotatably mounted to the first mounting hole;
the abutting piece is provided with a first threaded hole, the screw penetrates through the first threaded hole, and the screw is in threaded fit with the abutting piece; and
and the guide piece is connected with the abutting piece and the base, and the guide piece is used for guiding the movement of the abutting piece relative to the axial direction of the screw rod.
In some embodiments, the guide comprises:
the base is provided with a second mounting hole, the abutting piece is provided with a guide hole, and the guide rod penetrates through the guide hole and one end of the guide rod is fixed in the second mounting hole.
In some embodiments, the guide rods comprise at least two, each guide rod being spaced circumferentially around the threaded rod.
In some embodiments, the abutting member comprises:
a plate provided with a third mounting hole; and
a nut fixed to the plate; the nut is provided with the first threaded hole, the screw rod simultaneously penetrates through the first threaded hole and the third mounting hole, and the screw rod and the first threaded hole form threaded fit.
In some embodiments, the seal ring removal apparatus further comprises:
the end part of the screw rod, which extends out of the first mounting hole, is provided with the blocking piece so as to prevent the screw rod from being separated from the first mounting hole.
In some embodiments, the barrier comprises:
the retaining ring is sleeved on the outer side of the screw rod; and
and the limiting pin penetrates through the baffle ring and the screw rod to fix the baffle ring and the screw rod.
In some embodiments, a side of the base facing the blocking member is provided with a mounting groove, and the blocking member is located in the mounting groove.
The embodiment of the invention also provides a method for disassembling the sealing ring, which comprises the following steps:
detaching the fixing bolt between the sealing ring and the conical wall;
uniformly placing a plurality of sealing ring dismounting devices provided by any technical scheme of the invention on the supporting surface of the conical wall along the circumferential direction of the sealing ring;
symmetrically rotating a screw rod of the seal ring dismounting device along the central axis of the seal ring, so that the abutting piece moves along the axial direction of the screw rod until the abutting piece abuts against the side surface of the seal ring facing the conical wall;
and continuously and symmetrically rotating the screw of the seal ring dismounting device along the central axis of the seal ring until the abutting piece abuts against the seal ring, so as to finish dismounting.
In some embodiments, the step of symmetrically rotating the screw of the seal ring dismounting device along the central axis of the seal ring comprises the following steps:
rotating a screw of one of the sealing ring dismounting devices;
and finding the screw of the other sealing ring dismounting device which is symmetrical to the screw in the last step along the central axis of the sealing ring, and then rotating the screw.
According to the sealing ring dismounting device provided by the technical scheme, the sealing ring dismounting device is placed at the front mounting edge of the conical wall, the sealing ring dismounting device is used for applying tension to the annular boss at the inner side of the sealing ring, and the abutting piece moves along the axial direction of the screw rod under the driving of the screw rod, so that the sealing ring can be ejected out of the conical wall, and dismounting is realized; make to the ejecting piece can not follow the screw rod through the guide part and rotate, so support the ejecting piece and can support the interior boss of the ring of obturating all the time, above-mentioned technical scheme has realized the dismantlement of interference fit ring of obturating in the non-open space, is particularly useful for this kind of environment that can't use the sliding hammer, can't use the press and dismantle of ring of obturating.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic view of a seal ring removing apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic perspective view of a seal ring detaching device according to an embodiment of the present invention;
FIG. 3 is a schematic sectional view A-A of FIG. 2;
FIG. 4 is a schematic cross-sectional view B-B of FIG. 2;
FIG. 5 is a schematic flow chart of a method for removing a seal ring according to another embodiment of the present invention.
Detailed Description
The technical solution provided by the present invention is explained in more detail with reference to fig. 1 to 5.
Referring to fig. 1 and 2, an embodiment of the present invention provides a seal ring dismounting device, including a base 1, a screw 2, a pushing element 3, and a guiding element 4.
The base 1 has a first mounting hole 11. The screw 2 is rotatably mounted to the first mounting hole 11. The first mounting hole 11 is, for example, a light hole. The base 1 is the installation foundation of the screw rod 2. The screw rod 2 and the base 1 are matched in a shaft and hole mode. The screw 2 can rotate freely relative to the base 1 without changing the relative axial position of the two. In some embodiments, the screw 2 is divided into a polished rod section and a threaded section. The two parts are integral. The outer diameter of the polished rod section is smaller than that of the threaded section. The abrupt change position of the joint of the two parts is a boss which plays a role in positioning. The size of the threaded section is larger than the inner diameter of the first mounting hole 11, and the inner diameter of the polished rod section is smaller than the inner diameter of the first mounting hole 11. The polished rod section passes through the inside of the first mounting hole 11, and the threaded section is positioned outside the first mounting hole 11.
Referring to fig. 3 to 4, in order to prevent the polished rod segment from falling out of the first mounting hole 11, in some embodiments, the seal ring detaching device further includes a blocking member 5, and the blocking member 5 is mounted on the end of the screw rod 2 extending out of the first mounting hole 11 to prevent the screw rod 2 from falling out of the first mounting hole 11. That is, the end of the polished rod segment is mounted with the blocking member 5, and the size of the blocking member 5 is larger than the size of the first mounting hole 11 to prevent the polished rod segment from falling off.
Referring to fig. 2-4, in some embodiments, the blocking member 5 includes a blocking ring 51 and a limit pin 52. The retaining ring 51 is sleeved outside the screw rod 2. The stopper pin 52 penetrates the retainer ring 51 and the screw 2 to fix the retainer ring 51 and the screw 2. The retainer ring 51 and the screw 2 are provided with through holes through which the stopper pins 52 are inserted.
In some embodiments, the side of the base 1 facing the blocking member 5 is provided with a mounting groove 12, and the blocking member 5 is located in the mounting groove 12. Therefore, the polished rod section cannot protrude out of the base 1, and when the sealing ring dismounting device is used subsequently, one side of the base 1, which is provided with the mounting groove 12, is basically a plane, so that the base 1 can be stably prevented from being arranged on the end surface 61 of the conical wall 6, and the sealing ring dismounting device is more stable to place.
Referring to fig. 2 to 4, the abutting piece 3 is provided with a first threaded hole 30, the screw rod 2 penetrates through the first threaded hole 30, and the screw rod 2 is in threaded fit with the abutting piece 3. The guide 4 is connected to both the abutting member 3 and the base 1, and the guide 4 is configured to guide the movement of the abutting member 3 with respect to the axial direction of the screw 2. The guide 4 may be of a structure that realizes linear guide so that the abutting member 3 stably moves linearly in the axial direction of the screw 2.
Referring to fig. 2 to 4, in some embodiments, the guide member 4 includes a guide rod, the base 1 is provided with a second mounting hole, the abutting member 3 is provided with a guide hole, the guide rod passes through the guide hole, and one end of the guide rod is fixed to the second mounting hole. The second mounting hole is for example the screw hole, and the one end of guide bar is provided with the screw thread, through screw-thread fit, realizes the fixed connection of guide bar and base 1.
In some embodiments, the guide rods comprise at least two, each guide rod being spaced circumferentially around the screw 2. In the embodiment illustrated in fig. 2 to 4, two guide rods are provided, which are arranged symmetrically on both sides of the screw 2. The two guide rods can be identical in structure and installation mode.
With continued reference to fig. 2-4, in some embodiments, the abutting member 3 includes a plate 31 and a nut 32. The plate 31 is provided with a third mounting hole 31 a. The nut 32 is fixed to the plate 31. The nut 32 has the first threaded hole 30 described above, and the first threaded hole 30 and the third mounting hole 31a are coaxially arranged. The screw rod 2 simultaneously passes through the first threaded hole 30 and the third mounting hole 31a, and the screw rod 2 and the first threaded hole 30 form a threaded fit. The plate 31 is arranged, so that the guide rod can be installed conveniently and stably. The nut 32 is provided so that the abutting member 3 can be easily screw-engaged with the screw 2.
Referring to fig. 5, an embodiment of the present invention further provides a method for disassembling a sealing ring, which can be implemented by using the device for disassembling a sealing ring provided in any technical solution of the present invention. The method for disassembling the sealing ring provided by the embodiment of the invention comprises the following steps:
and S100, detaching the fixing bolt 8 between the sealing ring 7 and the conical wall 6. The sealing ring 7 and the conical wall 6 are in tight fit, and particularly, the sealing ring 7 and the conical wall 6 are connected through the fixing bolt 8 and form interference fit through the shaft and the hole. Therefore, after the fixing bolt 8 is disassembled, the sealing ring 7 and the conical wall 6 are still in tight fit, and if a tool is not used and a manual mode is directly adopted, the sealing ring 7 cannot be disassembled. Therefore, the sealing ring dismounting device is required to be used for realizing dismounting.
Step S200, uniformly placing a plurality of seal ring dismounting devices provided by any of the embodiments of the present invention on the end surface 61 of the conical wall 6 along the circumferential direction of the seal ring 7. For example, 3, 4 and 5 conical walls 6 are placed on one circle of the sealing ring 7. Optionally, the seal ring removing means is provided in an even number, which facilitates symmetrical arrangement of the respective seal ring removing means along the central axis of the seal ring 7.
Step 300, symmetrically rotating the screw rod 2 of the seal ring dismounting device along the central axis of the seal ring 7, so that the abutting piece 3 moves along the axial direction of the screw rod 2 until the abutting piece 3 abuts against the side surface, facing the conical wall 6, of the seal ring 7. The screw rods 2 of the seal ring dismounting devices are symmetrically rotated, so that the seal ring 7 can uniformly move along the axial direction of the seal ring 7, and the situation that the seal ring 7 is clamped with the conical wall 6 after being inclined is reduced or even prevented.
Along the central axis of the sealing ring 7, the screw 2 of the sealing ring dismounting device is symmetrically rotated (the symmetrically rotated screw 2 for short) which means that: rotating a screw rod 2 of one of the sealing ring dismounting devices; then, the screw 2 of another seal ring removing device which is symmetrical to the screw 2 in the previous step along the central axis of the seal ring 7 is found, and then the screw 2 is rotated. The screws 2 which rotate twice back and forth are symmetrically arranged relative to the central axis of the sealing ring 7. Taking four sealing ring detaching devices as an example, for example, the screw 2 rotating for the first time is the screw 2 located at 70 ° of the sealing ring, and the screw 2 rotating for the second time is the screw 2 located at 7180 ° of the sealing ring. If the third screw 2 is a screw 2 located at 790 ° of the sealing ring, the fourth screw 2 is a screw 2 located at 7270 ° of the sealing ring.
And S400, continuing to symmetrically rotate the screw rod 2 of the seal ring dismounting device along the central axis of the seal ring 7 until the abutting piece 3 abuts against the seal ring 7 to finish dismounting.
According to the sealing ring dismounting method provided by the technical scheme, the end face 61 of the conical wall 6 is used for placing the sealing ring dismounting device, the sealing ring dismounting device is used for applying tension to the annular boss on the inner side of the sealing ring 7, the abutting part 3 moves along the axial direction of the screw rod 2 under the driving of the screw rod 2, and the sealing ring 7 can be ejected out of the conical wall 6, so that dismounting is realized; make to top 3 can not follow screw rod 2 through guide 4 and rotate, so top 3 can support the interior boss of the ring 7 of obturating all the time, above-mentioned technical scheme has realized that the ring 7 of obturating of interference fit is dismantled in the non-open space.
In the description of the present invention, it is to be understood that the terms "central", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the scope of the present invention.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: it is to be understood that modifications may be made to the technical solutions described in the foregoing embodiments, or equivalents may be substituted for some of the technical features thereof, but such modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A seal ring removal device, comprising:
a base (1) having a first mounting hole (11);
a screw (2) rotatably mounted to the first mounting hole (11);
the abutting piece (3) is provided with a first threaded hole (30), the screw (2) penetrates through the first threaded hole (30), and the screw (2) is in threaded fit with the abutting piece (3); and
a guide (4) connected to both the abutting member (3) and the base (1), the guide (4) being configured to guide the movement of the abutting member (3) relative to the axial direction of the screw (2).
2. The seal ring removing device according to claim 1, wherein the guide member (4) comprises:
the base (1) is provided with a second mounting hole, the abutting piece (3) is provided with a guide hole, and the guide rod penetrates through the guide hole and one end of the guide rod is fixed in the second mounting hole.
3. The seal ring removing device according to claim 2, wherein the guide rods comprise at least two, and each guide rod is arranged around the circumference of the screw rod (2) at intervals.
4. The device for removing a sealing ring according to claim 1, wherein the abutting piece (3) comprises:
a plate (31) provided with a third mounting hole (31 a); and
a nut (32) fixed to the plate (31); the nut (32) is provided with the first threaded hole (30), the screw rod (2) simultaneously penetrates through the first threaded hole (30) and the third mounting hole (31a), and the screw rod (2) and the first threaded hole (30) form threaded fit.
5. The seal ring removal apparatus of claim 1, further comprising:
the end part of the screw rod (2) extending out of the first mounting hole (11) is provided with the blocking piece (5) so as to prevent the screw rod (2) from being separated from the first mounting hole (11).
6. The seal ring removing device according to claim 5, wherein the blocking member (5) comprises:
the retaining ring (51) is sleeved outside the screw rod (2); and
and the limiting pin (52) penetrates through the baffle ring (51) and the screw rod (2) so as to fix the baffle ring (51) and the screw rod (2).
7. The seal ring dismounting device according to claim 5, characterized in that a mounting groove (12) is provided on a side of the base (1) facing the blocking member (5), and the blocking member (5) is located in the mounting groove (12).
8. A method for disassembling a sealing ring is characterized by comprising the following steps:
the fixing bolt between the sealing ring (7) and the conical wall (6) is disassembled;
uniformly placing a plurality of sealing ring dismounting devices according to any one of claims 1-7 on the end face (61) of the conical wall (6) along the circumferential direction of the sealing ring (7);
symmetrically rotating a screw rod (2) of a dismounting device of the sealing ring (7) along the central axis of the sealing ring (7) so that the abutting piece (3) moves along the axial direction of the screw rod (2) until the abutting piece (3) abuts against the side surface of the sealing ring (7) facing the conical wall (6);
and continuously and symmetrically rotating the screw rod (2) of the seal ring (7) dismounting device along the central axis of the seal ring (7) until the abutting piece (3) abuts against the seal ring (7) to finish dismounting.
9. The method for disassembling the sealing ring according to claim 8, wherein the step of symmetrically rotating the screw (2) of the sealing ring disassembling device along the central axis of the sealing ring (7) comprises the following steps:
rotating a screw rod (2) of one of the sealing ring dismounting devices;
and finding the screw (2) of the other sealing ring dismounting device which is symmetrical to the screw (2) in the previous step along the central axis of the sealing ring (7), and then rotating the screw (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110142444.9A CN114833763A (en) | 2021-02-02 | 2021-02-02 | Sealing ring dismounting device and sealing ring dismounting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110142444.9A CN114833763A (en) | 2021-02-02 | 2021-02-02 | Sealing ring dismounting device and sealing ring dismounting method |
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| Publication Number | Publication Date |
|---|---|
| CN114833763A true CN114833763A (en) | 2022-08-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110142444.9A Pending CN114833763A (en) | 2021-02-02 | 2021-02-02 | Sealing ring dismounting device and sealing ring dismounting method |
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| CN (1) | CN114833763A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115519513A (en) * | 2022-11-22 | 2022-12-27 | 成都中科翼能科技有限公司 | Method and tool structure for decomposing interference fit structure of turbine rotor |
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| CN202010989U (en) * | 2011-01-10 | 2011-10-19 | 中铁十二局集团第一工程有限公司 | Anchor pole pull-out device of track plate holddown apparatus |
| CN202097708U (en) * | 2011-05-31 | 2012-01-04 | 山东泰开真空开关有限公司 | Bearing assembling tooling |
| CN106002822A (en) * | 2016-06-20 | 2016-10-12 | 中国航空动力机械研究所 | Disassembling tool for parts in interference fit |
| DE202016107404U1 (en) * | 2016-02-26 | 2017-01-16 | Bo Chen Hung Co., Ltd. | Reset for the piston of the wheel brake cylinder |
| CN207888563U (en) * | 2018-02-02 | 2018-09-21 | 人本集团有限公司 | Bearing disassembling device |
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2021
- 2021-02-02 CN CN202110142444.9A patent/CN114833763A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202010989U (en) * | 2011-01-10 | 2011-10-19 | 中铁十二局集团第一工程有限公司 | Anchor pole pull-out device of track plate holddown apparatus |
| CN202097708U (en) * | 2011-05-31 | 2012-01-04 | 山东泰开真空开关有限公司 | Bearing assembling tooling |
| DE202016107404U1 (en) * | 2016-02-26 | 2017-01-16 | Bo Chen Hung Co., Ltd. | Reset for the piston of the wheel brake cylinder |
| CN106002822A (en) * | 2016-06-20 | 2016-10-12 | 中国航空动力机械研究所 | Disassembling tool for parts in interference fit |
| CN207888563U (en) * | 2018-02-02 | 2018-09-21 | 人本集团有限公司 | Bearing disassembling device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115519513A (en) * | 2022-11-22 | 2022-12-27 | 成都中科翼能科技有限公司 | Method and tool structure for decomposing interference fit structure of turbine rotor |
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