CN113752212A - Supporting plate nut mounting method and mounting tool thereof - Google Patents
Supporting plate nut mounting method and mounting tool thereof Download PDFInfo
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- CN113752212A CN113752212A CN202010493045.2A CN202010493045A CN113752212A CN 113752212 A CN113752212 A CN 113752212A CN 202010493045 A CN202010493045 A CN 202010493045A CN 113752212 A CN113752212 A CN 113752212A
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- pressure turbine
- turbine shaft
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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
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The invention relates to a mounting method and a mounting tool for a supporting plate nut. The mounting tool for the supporting plate nut is suitable for a low-pressure turbine shaft and comprises a mounting plate, wherein one end of the mounting plate is arranged at the end part of the rear end of the low-pressure turbine shaft, the length direction of the mounting plate is arranged along the radial direction of the low-pressure turbine shaft, and the other end of the mounting plate is provided with a first mounting hole and a second mounting hole; the rolling device is arranged at one end of the mounting plate and is used for being in rolling fit with the end part of the rear end of the low-pressure turbine shaft; the connecting rod is matched with the first mounting hole, is vertical to the mounting plate and can move up and down along the first mounting hole; the nut bearing plate is fixed at the bottom of the connecting rod and is parallel to the plane where the mounting plate is located, the nut bearing plate is provided with a fixing hole, the fixing hole is used for placing a bearing plate nut, and the connecting rod is rotated to enable the nut bearing plate to rotate inwards or outwards. The invention provides a mounting method and a mounting tool for a splint nut, which can be used for conveniently mounting the splint nut in a nut mounting hole of an axis mounting edge of a low-pressure turbine shaft.
Description
Technical Field
The invention relates to the technical field of engine assembly in an aircraft engine, in particular to a mounting method and a mounting tool for a supporting plate nut.
Background
In order to solve the problem of difficult nut installation in a narrow space, a supporting plate nut structure is adopted at the installation edge of the shaft center at the rear end of the low-pressure turbine shaft, and the supporting plate nut is installed on the installation edge in advance. FIG. 1 shows a schematic view of a connection structure of a support plate nut and a low-pressure turbine shaft mounting edge. As shown in fig. 1, when mounting, the pallet nut 101 is placed from the inside into the nut mounting hole 104 on the mounting edge 103 of the low-pressure turbine shaft 102, and the end face of the pallet nut 101 is brought into close contact with the mounting edge 103. The head of the pallet nut 101 is then flared to a flare 105 and is placed in close contact with the tapered mouth of the nut mounting hole 104. Because the rear end inner chamber diameter of low-pressure turbine shaft is less, installation operating space is narrow and small, and common mounting tool lacks centring means, and the installation effectiveness is lower, and the installation angle is difficult to control, leads to the layer board nut to scrap easily.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a mounting method and a mounting tool for a supporting plate nut, which are suitable for a low-pressure turbine shaft, can conveniently mount the supporting plate nut in a nut mounting hole on an axis mounting edge of the low-pressure turbine shaft, have compact integral structure and convenient operation, and can effectively improve the mounting efficiency and quality of the supporting plate nut.
Specifically, the invention provides a mounting tool for a supporting plate nut, which is suitable for a low-pressure turbine shaft, and comprises:
the mounting plate is arranged at the end part of the rear end of the low-pressure turbine shaft, one end of the mounting plate is arranged along the radial direction of the low-pressure turbine shaft, and the other end of the mounting plate is provided with a first mounting hole and a second mounting hole;
the rolling device is arranged at one end of the mounting plate and is used for being in rolling fit with the end part of the rear end of the low-pressure turbine shaft;
the connecting rod is matched with the first mounting hole, is perpendicular to the mounting plate and can move up and down along the first mounting hole;
the nut supporting plate is fixed at the bottom of the connecting rod and is parallel to the plane of the mounting plate, a fixing hole is formed in the nut supporting plate, the fixing hole is used for placing the supporting plate nut, and the nut supporting plate can rotate inwards or outwards by rotating the connecting rod;
and the conical surface screw rod penetrates through the second mounting hole and can enable the supporting plate nut to form a flaring so that the supporting plate nut is mounted on the axis mounting edge of the low-pressure turbine shaft.
According to one embodiment of the invention, the rolling device comprises a mounting rod, a roller and a compression nut, wherein a third mounting hole is formed in one end of the mounting plate, the mounting rod is matched with the third mounting hole, the roller is sleeved on the mounting rod, and the compression nut is fixed with the mounting rod in a threaded fit manner and used for fixing the roller on the bottom surface of the mounting plate;
the roller is in rolling fit with the cylindrical edge at the end part of the rear end of the low-pressure turbine shaft, so that the mounting plate can rotate along the circumferential direction of the end part of the rear end of the low-pressure turbine shaft.
According to one embodiment of the invention, a circular arc boss is formed downward on the bottom surface of one end of the mounting plate to fit the upper edge of the cylindrical edge of the rear end portion of the low-pressure turbine shaft.
According to one embodiment of the invention, the low-pressure turbine shaft further comprises a positioning pin, wherein one end of the mounting plate is provided with a positioning hole, the positioning pin is matched and fixed with the positioning hole, and the positioning pin penetrates through the positioning hole downwards and extends into a through hole at the end part of the rear end of the low-pressure turbine shaft.
According to one embodiment of the invention, the device further comprises an adjusting nut arranged on the mounting plate, the adjusting nut is in threaded fit with the connecting rod, and the adjusting nut is used for fixing the connecting rod.
According to one embodiment of the invention, the nut support plate is rotated inwards to enable the support plate nut to be matched with the nut mounting hole of the axle center mounting edge of the low-pressure turbine shaft, the nut support plate and the nut mounting hole are coaxial, and the top surface of the nut support plate is attached to the bottom surface of the axle center mounting edge of the low-pressure turbine shaft; the nut supporting plate rotates outwards and is suitable for placing the supporting plate nut in the fixing hole.
According to one embodiment of the invention, the conical screw comprises a threaded part and a connecting rod part, the threaded part is arranged at the bottom of the connecting rod part, and the connecting position of the threaded part and the connecting rod part forms a reverse conical surface.
According to an embodiment of the invention, the diameter of the threaded portion is smaller than the diameter of the rod portion.
According to one embodiment of the invention, in the installation process, the threaded part extends into the supporting plate nut and is matched with the internal thread of the supporting plate nut, the inverted conical surface extrudes the top of the supporting plate nut to form a flaring, and the flaring is attached to the outer edge of the nut installation hole on the axis installation edge of the low-pressure turbine shaft.
The invention also provides a mounting method of the supporting plate nut, which comprises the following steps:
step 1, arranging one end of the mounting plate at the rear end part of the low-pressure turbine shaft, and enabling the rolling device to be in rolling fit with the rear end part of the low-pressure turbine shaft;
step 2, rotating the connecting rod, enabling the nut supporting plate to rotate outwards, and placing the supporting plate nut in the fixing hole;
step 3, rotating the connecting rod to enable the supporting plate nut to align with a nut mounting hole on an axis mounting edge of the low-pressure turbine shaft;
step 4, rotating the conical screw, and pressing the top end of the supporting plate nut to form a flared opening by matching with the supporting plate nut so as to enable the supporting plate nut to be installed on the axis installation edge of the low-pressure turbine shaft;
step 5, reversely rotating the conical screw to separate the conical screw from the supporting plate nut and lowering the connecting rod;
step 6, rotating the mounting plate to the next mounting position through the rolling device;
and 7, repeating the steps 2-6 to complete the installation of all the supporting plate nuts.
The method and the tool for mounting the supporting plate nut can conveniently mount the supporting plate nut into the nut mounting hole of the axle center mounting edge of the low-pressure turbine shaft, so that the mounting efficiency and the mounting quality of the supporting plate nut are improved.
It is to be understood that both the foregoing general description and the following detailed description of the present invention are exemplary and explanatory and are intended to provide further explanation of the invention as claimed.
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 principle of the invention.
In the drawings:
FIG. 1 shows a schematic view of a connection structure of a support plate nut and a low-pressure turbine shaft mounting edge.
FIG. 2 shows a schematic structural view of a pallet nut installation tool according to one embodiment of the present invention.
FIG. 3 illustrates another angular configuration of a pallet nut installation tool according to one embodiment of the present invention.
FIG. 4 illustrates a first state view of the use of the pallet nut installation tool according to one embodiment of the present invention.
FIG. 5 illustrates a second state of use of the pallet nut installation tool in accordance with one embodiment of the present invention.
Fig. 6 is a partial cross-sectional view of fig. 4.
FIG. 7 is a schematic view of a bevel screw extrusion pallet nut according to one embodiment of the present invention.
FIG. 8 illustrates a method of using the pallet nut installation tool according to one embodiment of the present invention.
Wherein the figures include the following reference numerals:
Mounting edge 103 nut mounting hole 104
Horn mouth 105
Rolling device 202 connecting rod 203
Dowel pin 214 adjusting nut 215
Threaded portion 216 connecting rod portion 217
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited. Further, although the terms used in the present application are selected from publicly known and used terms, some of the terms mentioned in the specification of the present application may be selected by the applicant at his or her discretion, the detailed meanings of which are described in relevant parts of the description herein. Further, it is required that the present application is understood not only by the actual terms used but also by the meaning of each term lying within.
FIG. 2 shows a schematic structural view of a pallet nut installation tool according to one embodiment of the present invention. FIG. 3 illustrates another angular configuration of a pallet nut installation tool according to one embodiment of the present invention. FIG. 4 illustrates a first state view of the use of the pallet nut installation tool according to one embodiment of the present invention. FIG. 5 illustrates a second state of use of the pallet nut installation tool in accordance with one embodiment of the present invention. Fig. 6 is a partial cross-sectional view of fig. 4. As shown, a pallet nut mounting tool 200 suitable for a low-pressure turbine shaft 102 mainly comprises a mounting plate 201, a rolling device 202, a connecting rod 203, a nut bearing plate 204 and a conical screw 205.
Wherein one end of the mounting plate 201 is disposed at the aft end 206 of the low-pressure turbine shaft 102. The length direction of the mounting plate 201 is arranged in the radial direction of the low-pressure turbine shaft 102. A first mounting hole 207 and a second mounting hole 208 are opened at the other end of the mounting plate 201.
The rolling device 202 is disposed at one end of the mounting plate 201. The rolling device 202 is adapted to roll-fit with the rear end portion 206 of the low-pressure turbine shaft 102 such that the mounting plate 201 can rotate about the rear end portion 206 of the low-pressure turbine shaft 102 and remain in a radial position of the low-pressure turbine shaft 102 at all times, so that a suitable mounting position for the pallet nut 101 can be found.
The connecting rod 203 is fitted with the first mounting hole 207. The connecting rod 203 extends into the first mounting hole 207 and is perpendicular to the mounting plate 201. The connecting rod 203 can move up and down along the first mounting hole 207.
The nut support plate 204 is fixed to the bottom of the connecting rod 203. The nut support plate 204 is parallel to the plane of the mounting plate 201. The nut support plate 204 is provided with a fixing hole 209. The fixing hole 209 is used for placing the pallet nut 101. The shape of the fixing hole 209 matches the shape of the pallet nut 101, and a step is formed inside the fixing hole 209 to match the placement of the pallet nut 101. Turning the tie rods 203 can cause the nut support plates 204 to turn inward or outward to transfer the plate nuts 101 to the mounting position.
The conical screw 205 is inserted into the second mounting hole 208. The bevel screw 205 is used to flare the top of the pallet nut 101, i.e., to form a flare 105. Thus, the pallet nut 101 is fitted and fixed to the outer edge of the nut mounting hole 104 of the axial mounting edge 103 of the low-pressure turbine shaft 102 through the bell mouth 105.
Preferably, referring to fig. 2 and 3, the rolling device 202 includes a mounting bar 210, a roller 211, and a compression nut 212. A third mounting hole (not shown) is formed at one end of the mounting plate 201, and the mounting rod 210 is engaged with the third mounting hole. The roller 211 is sleeved on the mounting rod 210, and the compression nut 212 is fixed with the mounting rod 210 in a threaded fit manner, so that the roller 211 is fixed between the bottom surface of the mounting plate 201 and the compression nut 212, and the rolling flexibility of the roller 211 can be maintained. When the pallet nut mounting tool 200 is assembled, the rollers 211 are in rolling engagement with the cylindrical edge of the rear end portion 206 of the low-pressure turbine shaft 102, so that the mounting plate 201 can rotate in the circumferential direction of the rear end portion 206 of the low-pressure turbine shaft 102, and is held at the radial position of the low-pressure turbine shaft 102, thereby finding the mounting position of the pallet nut 101.
Preferably, a circular arc shaped boss 213 is formed downward on the bottom surface of one end of the mounting plate 201. The circular arc-shaped boss 213 is fitted with the upper edge of the cylindrical edge of the rear end portion 206 of the low-pressure turbine shaft 102, so that the fixing structure of the mounting tool 200 is more stable.
Preferably, the pallet nut installation tool 200 also includes locating pins 214. One end of the mounting plate 201 is provided with a positioning hole, and the positioning pin 214 is matched and fixed with the positioning hole. The locating pin 214 passes down through the locating hole and extends into the through hole of the aft end 206 of the low-pressure turbine shaft 102. When the mounting plate 201 is rotated to a proper position, the positioning pin 214 is inserted to fix the position of the mounting plate 201.
Preferably, the pallet nut installation tool 200 also includes an adjustment nut 215. An adjusting nut 215 is provided on the mounting plate 201, the adjusting nut 215 is screw-fitted with the connecting rod 203, and the adjusting nut 215 is used to fix the connecting rod 203. The adjusting nut 215 is loosened, and the connecting rod 203 can be rotated or the connecting rod 203 can be lifted up and down; tightening the adjusting nut 215 fixes the position of the connecting rod 203 on the mounting plate 201.
Preferably, referring to FIG. 5, when the nut retainer plate 204 is rotated inwardly so that the retainer plate nut 101 engages the nut receiving bore 104 of the axial mounting edge 103 of the low pressure turbine shaft 102, both are coaxial. The top surface of the nut support plate 204 abuts against the bottom surface of the axial center mounting edge 103 of the low-pressure turbine shaft 102. Referring to fig. 4, when the installation of the pallet nut 101 is completed, the nut retainer plate 204 is rotated outwardly to reposition the pallet nut 101 in the securing hole 209.
Preferably, referring to FIG. 2, the bevel screw 205 includes a threaded portion 216 and a connecting rod portion 217. The threaded portion 216 is disposed at the bottom of the link portion 217, and the connection position of the threaded portion 216 and the link portion 217 forms an inverted conical surface 218, and the inverted conical surface 218 is used for pressing the top of the pallet nut 101 to form the bell mouth 105. More preferably, the link portion 217 may be a T-shaped link portion adapted for rotational operation.
Preferably, the diameter of the threaded portion 216 is smaller than the diameter of the connecting rod portion 217.
FIG. 7 is a schematic view of a bevel screw extrusion pallet nut according to one embodiment of the present invention. Preferably, during installation, the threaded portion 216 of the bevel screw 205 extends into the interior of the pallet nut 101 and mates with the internal threads 219 of the pallet nut 101. Subsequently, the conical screw 205 continues to move downward, and the reverse taper surface 218 gradually presses the top portion of the pallet nut 101, so that the top portion of the pallet nut 101 forms the bell mouth 105, and the bell mouth 105 gradually comes into contact with the outer edge of the nut mounting hole 104 on the shaft center mounting edge 103 of the low-pressure turbine shaft 102. It should be noted that the bevel screw 205 may have various types. The reverse tapers 218 of different bevel screws 205 have different taper slopes, and different bevel screws 205 can be selected according to different installation requirements.
FIG. 8 illustrates a method of using the pallet nut installation tool 200 according to one embodiment of the present invention. The following describes the installation method of the pallet nut 101 in detail with reference to all the drawings, and the specific operation steps are as follows:
in step 701, one end of the mounting plate 201 is disposed at the rear end 206 of the low-pressure turbine shaft 102, and the roller 211 of the rolling device 202 is in rolling engagement with the rear end 206 of the low-pressure turbine shaft 102. The mounting plate 201 is fixed by inserting the positioning pin 214.
In step 703, the connecting rod 203 is rotated to align the pallet nut 101 with the nut mounting hole 104 on the shaft mounting edge 103 of the low-pressure turbine shaft 102. In this step, the adjusting nut 215 can be appropriately loosened, the connecting rod 203 can be lowered, and after rotating the connecting rod 203 to the desired position, the connecting rod 203 can be raised upward so that the pallet nut 101 reaches the desired position and the top surface of the nut support plate 204 abuts the bottom surface of the mounting edge 103, and the adjusting nut 215 is tightened.
The mounting plate 201 is rotated 706 to the next mounting position by the rolling device 202. This step includes pulling out the alignment pins 214, rotating the mounting plate 201 to the next mounting position via the rollers 211, inserting the alignment pins 214, and securing the mounting plate 201.
And 707, repeating the steps 702-706 to finish the installation of all the supporting plate nuts 101.
The mounting method and the mounting tool for the supporting plate nut provided by the invention have the following advantages:
1. the positioning is accurate, the mounting plate is always kept at the radial position of the low-pressure turbine shaft through the rolling device, the positioning of the supporting plate nut is guaranteed, and therefore the mounting quality is improved.
2. Convenient operation, the position of layer board nut switches conveniently, can effectively promote the assembly efficiency of layer board nut.
3. The mounting tool has the advantages of compact integral structure, convenience in fixing and low manufacturing cost.
It will be apparent to those skilled in the art that various modifications and variations can be made to the above-described exemplary embodiments of the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.
Claims (10)
1. A pallet nut installation tool adapted for use with a low-pressure turbine shaft, said pallet nut installation tool comprising:
the mounting plate is arranged at the end part of the rear end of the low-pressure turbine shaft, one end of the mounting plate is arranged along the radial direction of the low-pressure turbine shaft, and the other end of the mounting plate is provided with a first mounting hole and a second mounting hole;
the rolling device is arranged at one end of the mounting plate and is used for being in rolling fit with the end part of the rear end of the low-pressure turbine shaft;
the connecting rod is matched with the first mounting hole, is perpendicular to the mounting plate and can move up and down along the first mounting hole;
the nut supporting plate is fixed at the bottom of the connecting rod and is parallel to the plane of the mounting plate, a fixing hole is formed in the nut supporting plate, the fixing hole is used for placing the supporting plate nut, and the nut supporting plate can rotate inwards or outwards by rotating the connecting rod;
and the conical surface screw rod penetrates through the second mounting hole and can enable the supporting plate nut to form a flaring so that the supporting plate nut is mounted on the axis mounting edge of the low-pressure turbine shaft.
2. The pallet nut mounting tool of claim 1 wherein said rolling means comprises a mounting bar, a roller and a compression nut, a third mounting hole is formed at one end of said mounting plate, said mounting bar is engaged with said third mounting hole, said roller is sleeved on said mounting bar, said compression nut is fixed to said mounting bar by screw-engaging, for fixing said roller to the bottom surface of said mounting plate;
the roller is in rolling fit with the cylindrical edge at the end part of the rear end of the low-pressure turbine shaft, so that the mounting plate can rotate along the circumferential direction of the end part of the rear end of the low-pressure turbine shaft.
3. The pallet nut setting tool of claim 2 wherein said one end of said setting plate has a circular arc shaped boss formed downwardly on the bottom surface thereof for engagement with the upper edge of the cylindrical rim at the rear end of said low pressure turbine shaft.
4. The pallet nut setting tool of claim 2 further comprising a locating pin, wherein the mounting plate has a locating hole formed in one end thereof, the locating pin being engaged with the locating hole and secured thereto, the locating pin passing downwardly through the locating hole and extending into the through hole in the rear end portion of the low-pressure turbine shaft.
5. The pallet nut mounting tool of claim 1 further comprising an adjustment nut disposed on the mounting plate, the adjustment nut being in threaded engagement with the connecting rod, the adjustment nut being for securing the connecting rod.
6. The pallet nut mounting tool of claim 1 wherein said nut support pallet is rotated inwardly to engage said pallet nut with said nut mounting hole of said axial mounting edge of said low pressure turbine shaft coaxially therewith, said nut support pallet having a top surface abutting a bottom surface of said axial mounting edge of said low pressure turbine shaft; the nut supporting plate rotates outwards and is suitable for placing the supporting plate nut in the fixing hole.
7. The pallet nut setting tool according to claim 1, wherein the conical screw comprises a screw portion and a link portion, the screw portion is provided at a bottom of the link portion, and a connecting position of the screw portion and the link portion forms an inverted conical surface.
8. The pallet nut installation tool of claim 7 wherein said threaded portion has a diameter less than a diameter of said link portion.
9. The pallet nut setting tool of claim 7, wherein during setting, the threaded portion extends into the interior of the pallet nut and mates with the internal threads of the pallet nut, the inverted conical surface presses against the top of the pallet nut to form a flare that engages the outer edge of the nut setting hole on the axial center setting edge of the low pressure turbine shaft.
10. A method of installing a pallet nut using the pallet nut installation tool of claim 1, comprising:
step 1, arranging one end of the mounting plate at the rear end part of the low-pressure turbine shaft, and enabling the rolling device to be in rolling fit with the rear end part of the low-pressure turbine shaft;
step 2, rotating the connecting rod, enabling the nut supporting plate to rotate outwards, and placing the supporting plate nut in the fixing hole;
step 3, rotating the connecting rod to enable the supporting plate nut to align with a nut mounting hole on an axis mounting edge of the low-pressure turbine shaft;
step 4, rotating the conical screw, and pressing the top end of the supporting plate nut to form a flared opening by matching with the supporting plate nut so as to enable the supporting plate nut to be installed on the axis installation edge of the low-pressure turbine shaft;
step 5, reversely rotating the conical screw to separate the conical screw from the supporting plate nut and lowering the connecting rod;
step 6, rotating the mounting plate to the next mounting position through the rolling device;
and 7, repeating the steps 2-6 to complete the installation of all the supporting plate nuts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010493045.2A CN113752212B (en) | 2020-06-03 | 2020-06-03 | Supporting plate nut mounting method and mounting tool thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010493045.2A CN113752212B (en) | 2020-06-03 | 2020-06-03 | Supporting plate nut mounting method and mounting tool thereof |
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| Publication Number | Publication Date |
|---|---|
| CN113752212A true CN113752212A (en) | 2021-12-07 |
| CN113752212B CN113752212B (en) | 2023-03-24 |
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| US20010034930A1 (en) * | 2000-03-24 | 2001-11-01 | Ned H. Phillips | Apparatus and process for boring and bolting pallets |
| CN104379881A (en) * | 2012-05-02 | 2015-02-25 | 斯奈克玛 | Tool and method for frontal unscrewing of a link nut in a twin-spool turbine |
| CN205111835U (en) * | 2015-10-14 | 2016-03-30 | 哈尔滨飞机工业集团有限责任公司 | A plate nut mounting tool for narrow space |
| CN109093549A (en) * | 2017-06-20 | 2018-12-28 | 中国航发上海商用航空发动机制造有限责任公司 | A kind of device that nut is tightened |
| CN108789260B (en) * | 2018-05-30 | 2020-04-07 | 中国航发动力股份有限公司 | Reamer and method for mounting support plate nut |
| CN208681467U (en) * | 2018-07-27 | 2019-04-02 | 湖南南方通用航空发动机有限公司 | A kind of flaring self-locking nut installation tool |
| CN109605258A (en) * | 2019-01-16 | 2019-04-12 | 沈阳飞机工业（集团）有限公司 | The floating type screw-in clamping and positioning device of one kind and its application method |
| CN110653736A (en) * | 2019-08-30 | 2020-01-07 | 中国航发动力股份有限公司 | Rotary rotor and stator accurate positioning device and method for bearing large axial load |
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