CN215860359U - Guide pin assembly and guide structure - Google Patents
Guide pin assembly and guide structure Download PDFInfo
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- CN215860359U CN215860359U CN202120696775.2U CN202120696775U CN215860359U CN 215860359 U CN215860359 U CN 215860359U CN 202120696775 U CN202120696775 U CN 202120696775U CN 215860359 U CN215860359 U CN 215860359U
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- guide pin
- seat body
- guide
- pin assembly
- flange edge
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Abstract
The utility model relates to a guide pin assembly and a guide structure, wherein the guide pin assembly comprises a first seat body, a second seat body and a guide pin, and the guide pin is detachably and fixedly connected with the first seat body; and the adjusting piece is positioned between the first seat body and the second seat body, the first seat body is supported by the adjusting piece, and the first seat body moves in the height direction along with the displacement of the adjusting piece in the height direction. The guide pin assembly has the advantages of prolonging the service life of the guide pin, reducing the process cost and the like.
Description
Technical Field
The utility model relates to the field of assembly, in particular to a guide pin assembly and a guide structure for engine assembly.
Background
As shown in fig. 1, a component of an aircraft engine, for example, a rotor and stator unit body of a low-pressure turbine, is composed of a rotor 100 and a stator 200, and the assembly mode is vertical assembly, the rotor and the stator are sealed by a honeycomb labyrinth sealing structure, in order to ensure good sealing performance, a radial gap G between a honeycomb on the stator and a labyrinth on the rotor is very small, and the minimum position is only 0.2 mm. In the process of installing the rotor and the stator, the comb teeth and the honeycomb are in an invisible state, if no good centering guide exists, the stator 200 and the rotor 100 are often scratched in the process of installing the first casing 101 and the second casing 102, the sealing structure is damaged, and the performance of the aero-engine is attenuated.
Since the bolt mounting hole on the casing is a through hole, the fixing of the guide pin cannot be directly realized.
In order to solve the problems, the chinese utility model patent with the publication number CN209100098U, entitled "fastening component, guiding structure and turbine casing assembly structure" proposes a center-expanding guiding pin mechanism, which is enlarged by a cam driving thin-wall cylinder and absorbed in a casing bolt mounting hole, the fastening component realizes reliable fixation in the guiding process through the expansion effect of an outer sleeve, so as to realize that in the falling process of vertical assembly, the mounting hole is aligned with the mounting hole of the mounting edge of the turbine casing in the falling process of the turbine rear casing through a reliably fastened guiding rod, so that the turbine rear casing is coaxial with the turbine rotor, and sealing failure caused by scraping collision with the turbine rotor is avoided; accurate centering installation of the turbine rear casing is achieved under blind installation conditions, and scraping between sealing structures with small gaps is avoided under an invisible state.
However, the inventor found in long-term practice that the guiding device in the prior art has a short service life due to repeated deformation of the thin-wall cylinder and extrusion with the wall of the bolt mounting hole of the casing, and is easy to damage and fail, so that the guiding pin is a consumable part, which not only has a high process cost, but also has an influence on the reliability of the process.
SUMMERY OF THE UTILITY MODEL
It is an object of the present invention to provide a guide pin assembly.
It is an object of the present invention to provide a guide structure.
A guide pin assembly according to one aspect of the present invention includes: a first seat body; a second seat body; the guide pin is detachably and fixedly connected with the first base; and the adjusting piece is positioned between the first seat body and the second seat body, the first seat body is supported by the adjusting piece, and the first seat body moves in the height direction along with the displacement of the adjusting piece in the height direction.
In one or more embodiments of the guide pin assembly, the adjusting member includes an adjusting nut and an adjusting screw, the adjusting screw is fixedly connected to the second seat and extends from the second seat along the height direction, the adjusting nut is sleeved on the adjusting screw, and the adjusting nut and the adjusting screw are in threaded fit and can be displaced in the height direction to drive the first seat supported by the adjusting nut to be displaced in the height direction.
In one or more embodiments of the guide pin assembly, the adjustment screw is integral with the second housing.
In one or more embodiments of the guide pin assembly, the first seat has a first connection hole, the first seat is connected to the adjustment screw shaft hole through the first connection hole in a matching manner, and the first seat and the adjustment screw shaft hole can slide relative to each other, and the first seat further has a second connection hole, and the second connection hole is detachably connected to the guide pin.
In one or more embodiments of the guide pin assembly, the second coupling aperture is removably coupled to an end of the guide pin via a threaded arrangement; the guide pin, the first connecting hole, the second connecting hole and the adjusting screw rod are coaxially arranged.
In one or more embodiments of the guide pin assembly, the first connection hole and the second connection hole form a stepped hole structure, and the diameter of the second connection hole is larger than that of the first connection hole.
In one or more embodiments of the guide pin assembly, the adjusting screw is provided with a guide slot extending in a height direction, a depth direction of the guide slot is a first direction, the first seat is provided with a third connecting hole in the first direction, and a connecting pin is connected with the third connecting hole and the guide slot in the first direction.
In one or more embodiments of the guide pin assembly, the depth of the guide slot hole extends through the radial dimension of the adjustment screw, and the third connection hole extends through the first housing in the first direction.
A guide structure according to an aspect of the present invention includes: the guide pin assembly of any preceding claim; the first box comprises an upper flange edge and a lower flange edge, and the first seat body and the second seat body of the guide pin assembly are positioned between the upper flange edge and the lower flange edge; the guide structure comprises an initial state and an installation state; in the initial state, the second seat body is supported by the lower flange edge in an abutting mode, and a gap is formed between the first seat body and the upper flange edge in the height direction; in the mounting state, the second seat body is supported by the lower flange edge in an abutting mode, the first seat body is supported by the upper flange edge in an abutting mode, and the guide pin penetrates through the mounting hole of the upper flange edge to be connected with the first seat body.
In one or more embodiments of the guide structure, the guide structure further includes a second casing including an upper flange and a lower flange, and in the installed state, the mounting hole of the lower flange of the second casing is slidably fitted with the guide pin, so that the lower flange of the second casing is in abutting connection with the upper flange of the first casing.
The progressive effects of the scheme include but are not limited to:
1. through the arrangement of the adjusting piece, the first base body and the second base body are respectively abutted against the upper flange edge and the lower flange edge after entering the mounting space provided by the upper flange edge and the lower flange edge of the first casing, so that the stable positioning of the guide pin on the casing is realized by skillfully utilizing the upper flange edge and the lower flange edge of the first casing, the reliability is good, the guide pin cannot be abraded or deformed, the service life of the guide pin is prolonged, and the process cost is reduced;
2. the guide pin can be stably abutted and positioned on the first seat body and the second seat body and then extends into the mounting hole on the upper flange edge to be connected with the first seat body, so that the guide pin can adapt to first machine boxes with various heights, and the universality of a guide pin assembly is good;
3. the height direction is adjusted by adopting the adjusting nut and the adjusting screw rod, the structure is simple, the cost of parts is low, and the operation is easy.
Drawings
The above and other features, properties and advantages of the present invention will become more apparent from the following description of the embodiments in conjunction with the accompanying drawings, it being noted that the drawings are given by way of example only and are not drawn to scale, and should not be taken as limiting the scope of the utility model which is actually claimed, wherein:
fig. 1 is a schematic view of a rotor-stator structure of a low-pressure turbine.
Fig. 2 is a schematic structural view of an installation state of the guide structure of the embodiment.
FIG. 3 is a schematic view of a guide pin configuration according to an embodiment.
FIG. 4 is a cross-sectional structural view of an embodiment of a guide pin.
Fig. 5 is an exploded view of an embodiment of a guide pin.
Reference numerals:
101-first case
1011-upper flange edge
1012-lower flange edge
102-second case
1021-upper flange
1022-lower flange edge
10-guide pin assembly
1-first seat
11-first connection hole
12-second connection hole
13-third connection hole
2-second seat
3-guide pin
4-adjusting part
41-adjusting nut
42-adjusting screw
421-guiding slotted hole
5-connecting pin
Detailed Description
The following discloses many different embodiments or examples for implementing the subject technology described. Specific examples of components and arrangements are described below to simplify the present disclosure, but these are merely examples and do not limit the scope of the utility model.
In addition, it is to be understood that references to "one embodiment", "an embodiment", and/or "some embodiments", "one or more embodiments" mean that a particular feature, structure, or characteristic described in connection with at least one embodiment of the application is intended. Therefore, it is emphasized and should be appreciated that two or more references to "an embodiment" or "one embodiment" or "some embodiments" or "one or more embodiments" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, some features, structures, or characteristics of one or more embodiments of the present application may be combined as appropriate.
Referring to fig. 2 to 5, in one or more embodiments, the guide pin assembly 10 includes a first housing 1, a second housing 2, a guide pin 3, and an adjusting member 4. The first seat body 1, the second seat body 2 and the adjusting member 4 form a seat body assembly. The first housing 1 and the guide pin 3 are detachably and fixedly connected, as shown in fig. 5, in an embodiment, the guide pin 3 can form a detachable connection structure of a screw structure through an external thread 31 at one end and an internal thread of the second connection hole 12 of the first housing 1. With continuing reference to fig. 3 to fig. 5, the adjusting member 4 is located between the first seat 1 and the second seat 2, and the first seat 1 is supported by the adjusting member 4, so that the first seat 1 is displaced in the height direction along with the displacement of the adjusting member 4 in the height direction.
A specific operation may be, as shown in fig. 2, that the guide pin assembly 10 and the first casing 101 are included in the guide structure for mounting the second casing 102 to the first casing 101. Wherein the first housing 101 includes an upper flange 1011 and a lower flange 1012. The first and second housings 1 and 2 of the guide pin assembly 10 are disposed between the upper and lower flanges 1011 and 1012 in the guide structure. The guiding structure includes an initial state in which the second seat 2 is supported by the lower flange 1012 and the first seat 1 has a gap with the upper flange 1011 in the height direction, and an installation state. Specifically, the height of the adjusting member 4 can be adjusted to make the first seat 1 and the upper flange 1011 have a gap in the height direction. Then, the adjusting member 4 is operated to raise its height so that the first seat body 1 is raised in the height direction until it abuts against and supports the upper flange edge 1011, so as to form the structure of the installation state of the guide structure shown in fig. 2, at this time, the second seat body 2 is abutted against and supported by the lower flange edge 1012, the first seat body 1 is abutted against and supported by the upper flange edge 1011, and the guide pin 3 passes through the installation hole of the upper flange edge 1011 to be connected with the first seat body 1. As shown in fig. 2, the second casing 102 includes an upper flange 1021 and a lower flange 1022, and in the mounting state, the mounting hole of the lower flange 1022 of the second casing 102 is in sliding fit with the guide pin 3, so that the lower flange 1022 of the second casing 102 is in abutting connection with the upper flange 1011 of the first casing 101, thereby completing the guiding of the mounting of the second casing 102 on the first casing 101, avoiding the occurrence of the scraping of the rotor and the stator during the assembly, and improving the safety of the assembly process.
In summary, the guide pin assembly 10 introduced in the above embodiment has the advantages that, by the arrangement of the adjusting member 4, the first seat body 1 and the second seat body 2 are respectively abutted against the upper flange edge 1011 and the lower flange edge 1012 after entering the installation space provided by the upper flange edge and the lower flange edge of the first casing 101, so that the upper flange edge and the lower flange edge of the first casing 101 are skillfully utilized to realize stable positioning of the guide pin on the casing, the reliability is good, the guide pin 3 is not worn or deformed, the service life of the guide pin is prolonged, and the process cost is reduced; moreover, the guide pin 3 can be stably abutted and positioned on the first seat body 1 and the second seat body 2, and then extend into the mounting hole of the upper flange 1011 to be connected with the first seat body 1, so that the guide pin assembly 10 can adapt to the first cases 101 with various heights, and the universality of the guide pin assembly 10 is good.
With continued reference to fig. 3 to fig. 5, in one or more embodiments, the specific structure of the adjusting element 4 may include an adjusting nut 41 and an adjusting screw 42, where the adjusting screw 42 is fixedly connected to the second fastening body 2 and extends from the second fastening body 2 along the height direction, that is, the length direction of the adjusting screw 42 is the height direction. The adjusting screw 42 and the second seat 2 may be a fixed connection structure as shown in fig. 4, or may be welded or detachably connected after being separately processed, all of which are not limited to this. The adjusting nut 41 is sleeved on the adjusting screw 42, and the adjusting nut 41 and the adjusting screw 42 can move in the height direction through the thread fit, so as to drive the first seat 1 supported by the adjusting nut 41 to move in the height direction. For example, the height of the adjusting nut 41 is first adjusted to be lower, the first seat body 1 falls under the action of gravity, so that a gap exists between the first seat body 1 and the upper flange edge 1011 in the height direction, and a seat body assembly composed of the first seat body 1, the second seat body 2 and the adjusting piece 4 can be placed between the upper flange edge 1011 and the lower flange edge 1012, and then the adjusting nut 41 is screwed, so that the adjusting nut 41 moves upwards to support the first seat body 1 to move upwards until the first seat body abuts against the lower end surface of the upper flange edge 1011 of the first casing 101, so as to stably position the seat body assembly of the guide pin assembly 10 on the casing.
With reference to fig. 3 to fig. 5, in some embodiments, the specific structure of the first seat 1 and the second seat 2 may further include that the first seat 1 has a first connection hole 11, and the first seat 1 is connected to the shaft hole of the adjusting screw 42 through the first connection hole 11 in a matching manner, and the first seat 1 and the adjusting screw 42 can slide relative to each other. That is, the first housing 1 can move in the height direction along the guide of the outer wall of the adjustment screw 42, so that the operation of the guide pin assembly 10 is facilitated. Further, with continued reference to fig. 3 to 5, in an embodiment, the guide pin 3, the first connection hole 11, the second connection hole 12, and the adjustment screw 42 are coaxially disposed, and it can be understood that the coaxial disposition herein allows reasonable processing errors, which has the beneficial effects of improving mechanical efficiency and making the operation of screwing the adjustment nut 41 by an operator more labor-saving. In addition, in an embodiment, as shown in fig. 4, the first connection hole 11 and the second connection hole 12 form a stepped hole structure, and the diameter of the second connection hole 12 is larger than that of the first connection hole 11, so that the processing of the first seat 1 is facilitated, and the process cost of the guide pin assembly 10 is further reduced.
With continued reference to fig. 3 to fig. 5, in one or more embodiments, the sliding fit structure of the first seat 1 and the adjusting screw 42 may be further guided, and the specific structure may be that the adjusting screw 42 is provided with a guide slot 421 extending in the height direction, the depth direction of the guide slot 421 is the first direction, the first seat 1 is provided with a third connecting hole 13 in the first direction, and the connecting pin 5 is connected to the third connecting hole 13 and the guide slot 421 in the first direction. As shown in fig. 4, the depth of the guiding slot 421 penetrates through the radial dimension of the adjusting screw 42, and the third connecting hole 13 penetrates through the first seat 1 in the first direction, so as to facilitate the processing and assembling connection. The guiding structure with the guiding slot 421, the third connecting hole 13 and the connecting pin 5 has the advantages that the movement of the first seat body 1 along the height direction is more reliably guided, so that an operator can more easily operate the adjusting part 4 to drive the first seat body 1 to move in the height direction, and the operation convenience of the guiding pin assembly 10 is further improved.
In summary, the beneficial effects of the guide pin assembly and the guide structure described in the above embodiments include, but are not limited to:
1. through the arrangement of the adjusting piece, the first base body and the second base body are respectively abutted against the upper flange edge and the lower flange edge after entering the mounting space provided by the upper flange edge and the lower flange edge of the first casing, so that the stable positioning of the guide pin on the casing is realized by skillfully utilizing the upper flange edge and the lower flange edge of the first casing, the reliability is good, the guide pin cannot be abraded or deformed, the service life of the guide pin is prolonged, and the process cost is reduced;
2. the guide pin can be stably abutted and positioned on the first seat body and the second seat body and then extends into the mounting hole on the upper flange edge to be connected with the first seat body, so that the guide pin can adapt to first machine boxes with various heights, and the universality of a guide pin assembly is good;
3. the height direction is adjusted by adopting the adjusting nut and the adjusting screw rod, the structure is simple, the cost of parts is low, and the operation is easy.
Although the present invention has been disclosed in the above-mentioned embodiments, it is not intended to limit the present invention, and those skilled in the art may make variations and modifications without departing from the spirit and scope of the present invention. Therefore, any modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope defined by the claims of the present invention, unless the technical essence of the present invention departs from the content of the present invention.
Claims (10)
1. A guide pin assembly, comprising:
a first seat body;
a second seat body;
the guide pin is detachably and fixedly connected with the first base;
and the adjusting piece is positioned between the first seat body and the second seat body, the first seat body is supported by the adjusting piece, and the first seat body moves in the height direction along with the displacement of the adjusting piece in the height direction.
2. The guide pin assembly of claim 1, wherein the adjusting member includes an adjusting nut and an adjusting screw, the adjusting screw is fixedly connected to the second housing and extends from the second housing along the height direction, the adjusting nut is sleeved on the adjusting screw, and the adjusting nut and the adjusting screw are threadedly engaged to be displaceable in the height direction to drive the first housing supported by the adjusting nut to be displaceable in the height direction.
3. The guide pin assembly of claim 2, wherein the adjustment screw is integral with the second housing.
4. The guide pin assembly of claim 3, wherein the first housing has a first coupling hole, the first housing being slidably coupled to the adjustment screw shaft hole through the first coupling hole, the first housing further having a second coupling hole, the second coupling hole being detachably coupled to the guide pin.
5. The guide pin assembly of claim 4, wherein the second coupling bore is removably coupled to an end of the guide pin by a threaded arrangement; the guide pin, the first connecting hole, the second connecting hole and the adjusting screw rod are coaxially arranged.
6. The guide pin assembly of claim 4, wherein the first and second connection bores define a stepped bore configuration, the second connection bore having a larger bore diameter than the first connection bore.
7. The guide pin assembly of claim 2, wherein the adjustment screw defines a guide slot extending in a height direction, a depth direction of the guide slot is a first direction, the first housing defines a third connecting hole in the first direction, and a connecting pin connects the third connecting hole and the guide slot in the first direction.
8. The guide pin assembly of claim 7, wherein the depth of the guide slot bore extends through a radial dimension of the adjustment screw, and the third connection bore extends through the first seat in a first direction.
9. A guide structure, comprising:
the guide pin assembly of any of claims 1-8;
the first box comprises an upper flange edge and a lower flange edge, and the first seat body and the second seat body of the guide pin assembly are positioned between the upper flange edge and the lower flange edge;
the guide structure comprises an initial state and an installation state;
in the initial state, the second seat body is supported by the lower flange edge in an abutting mode, and a gap is formed between the first seat body and the upper flange edge in the height direction;
in the mounting state, the second seat body is supported by the lower flange edge in an abutting mode, the first seat body is supported by the upper flange edge in an abutting mode, and the guide pin penetrates through the mounting hole of the upper flange edge to be connected with the first seat body.
10. The guide structure of claim 9, further comprising a second casing including an upper flange and a lower flange, wherein in the installed state, the mounting hole of the lower flange of the second casing is slidably engaged with the guide pin such that the lower flange of the second casing is in abutting engagement with the upper flange of the first casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120696775.2U CN215860359U (en) | 2021-04-06 | 2021-04-06 | Guide pin assembly and guide structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120696775.2U CN215860359U (en) | 2021-04-06 | 2021-04-06 | Guide pin assembly and guide structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215860359U true CN215860359U (en) | 2022-02-18 |
Family
ID=80318643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120696775.2U Active CN215860359U (en) | 2021-04-06 | 2021-04-06 | Guide pin assembly and guide structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215860359U (en) |
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2021
- 2021-04-06 CN CN202120696775.2U patent/CN215860359U/en active Active
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