CN216577682U - Mounting tool for nut of supporting plate - Google Patents

Abstract

The utility model aims to provide a mounting tool for a bracket nut, which comprises a bracket, a pressing piece, a locking piece and an extrusion piece. The support comprises a first platform part, a second platform part and an accommodating space formed between the first platform part and the second platform part, wherein a first threaded hole is formed in the first platform part, the second platform part is provided with a positioning part, and an assembly object can be accommodated in the accommodating space, so that the positioning part is matched and connected with the assembly object. The second screw hole has been seted up to pressing down inside, and periphery threaded connection is in first screw hole. The locking piece is in one side threaded connection of first platform portion compresses tightly a periphery, and the extruded piece has the extrusion end, and the extrusion end is the toper, and threaded connection is in the second screw hole. The mounting tool for the supporting plate nut can realize effective mounting of the supporting plate nut in a limited space.

Description

Mounting tool for nut of supporting plate

Technical Field

The utility model relates to the field of disassembly and assembly, in particular to a mounting tool for a supporting plate nut.

Background

The supporting plate nut can effectively solve the problem that the nut is difficult to install in a narrow space, the nut is usually installed on the flange edge in advance during installation, and only the installation of the bolt needs to be considered during actual assembly without considering the installation of the nut.

As shown in fig. 1, which is a schematic diagram of a low-pressure turbine shaft structure of an aircraft engine, a head 90 of the low-pressure turbine shaft 9 is a trumpet-shaped structure, and a front flange 91 is used for fixing a front sealing ring. When the front flange 91 of the low-pressure turbine shaft 9 is mounted, a pallet nut is generally used to solve the problem that a conventional nut is difficult to mount due to the limitation of the mounting space. The layer board nut during installation is between preceding flange 91 and back flange 92, and the head 90 of low pressure turbine shaft 9 is irregular horn mouth shape, and the reaming of layer board nut is fixed to need to satisfy two prerequisites: 1) before reaming, stably clamping the supporting plate nut; 2) the axis of the reaming cone is consistent with that of the mounting hole, otherwise, the supporting plate nut is easily scrapped.

The existing mounting tool for the supporting plate nut is suitable for reaming and fixing the supporting plate nut in an open space and is difficult to be applied to mounting the front flange of the low-pressure turbine shaft with a limited mounting space.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a mounting tool for a supporting plate nut, which can realize effective mounting of the supporting plate nut in a limited space.

The mounting tool for the pallet nut for solving the aforementioned object is used for mounting the pallet nut on an assembly object and comprises a bracket, a pressing member, a locking member and an extrusion member. The bracket comprises a first platform part, a second platform part and an accommodating space formed between the first platform part and the second platform part, wherein a first threaded hole is formed in the first platform part, the second platform part is provided with a positioning part, and the assembly object can be accommodated in the accommodating space so that the positioning part is matched and connected with the assembly object. The pressing piece is internally provided with a second threaded hole, the periphery of the pressing piece is connected in the first threaded hole in a threaded mode, and the pressing piece can be extended or retracted towards the second platform part by screwing the pressing piece. The locking piece is in threaded connection with the periphery of the pressing piece on one side of the first platform part, the extruding piece is provided with an extruding end, the extruding end is in a conical shape and is in threaded connection with the second threaded hole, and the extruding piece is rotated to enable the extruding end to extend out or retract into the pressing piece. This mounting tool for holding plate nuts can carry out pre-positioning centre gripping through first platform portion and pressing member to the holding plate nut, utilizes two nut self-locking structures to guarantee the stability that presses down a position simultaneously, has guaranteed this mounting tool's location accuracy. After the pressing piece is aligned with the supporting plate nut, the extrusion piece is movable along the axis of the pressing piece, so that the reaming direction is consistent with the axis of the mounting hole, the mounting quality of the nut is guaranteed, and the rejection rate is reduced.

In one or more embodiments, the locking member and the accommodating space are respectively located at two sides of the first platform part. The arrangement enables the locking piece to be exposed on the surface of the first platform part, so that the operation is convenient, and the locking of the pressing piece is convenient to realize.

In one or more embodiments, the bracket includes a longitudinal arm and two lateral arms protruding toward one side of the longitudinal arm, the two lateral arms being the first platform portion and the second platform portion, respectively, and the two lateral arms being disposed parallel to each other.

In one or more embodiments, the brace further comprises a grip projecting toward the other side of the longitudinal arm.

In one or more embodiments, the expression member further includes an operating end that extends out of the compression member in the assembled state, the operating end having a handle.

In one or more embodiments, the handle is a force application rod protruding toward one side of the extrusion, by which the driving force of the extrusion can be increased.

In one or more embodiments, the assembly object is a low-pressure turbine shaft front flange, the supporting plate nut is arranged behind the low-pressure turbine shaft front flange and is provided with an exposed head, and the positioning part is a positioning hole which can be matched with the head for positioning; the positioning hole is provided with a notch, the notch allows the positioning hole to move from the side face of the head to a position matched and positioned with the head, and the inner peripheral profile of the positioning hole can be attached to the head cylindrical surface of the supporting plate nut in the matched and positioned state. The positioning hole with the notch is matched with the head 8 of the support plate nut, the support plate nut can be sleeved on the outer side of the support plate nut from the notch along the radial direction, the assembly and disassembly are convenient, the support plate nut is not influenced by the limiting conditions that the front flange and the rear flange of the low-pressure turbine shaft and the auxiliary wrench cannot be connected when the nut is close to the cylindrical surface, and the support plate nut is easy to install in a limited space. Meanwhile, the movement directions of the pressing piece and the extrusion piece after the lamination can be kept consistent with the axis of the support plate nut, and the installation quality of the support plate nut is guaranteed.

In one or more embodiments, the locking member is a nut.

The above description is only an overview of the technical solutions of the present application, and the present application may be implemented in accordance with the content of the description so as to make the technical means of the present application more clearly understood, and the detailed description of the present application will be given below in order to make the above and other objects, features, and advantages of the present application more clearly understood.

Drawings

Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like parts are designated by like reference numerals throughout the drawings. In the drawings:

FIG. 1 shows a schematic view of an aircraft engine low pressure turbine shaft configuration;

FIG. 2 illustrates a perspective view of a pallet nut installation tool according to some embodiments of the present application;

FIG. 3 is a perspective view of a pallet nut installation tool according to some embodiments of the present application in an installed state;

FIG. 4 is a cross-sectional schematic view of a pallet nut installation tool according to some embodiments of the present application in an installed condition;

Fig. 5 is a partially enlarged view of fig. 4.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In order to solve the problem of installing the pallet nut under the working condition of limited space, according to some embodiments of the present application, a pallet nut installation tool for installing the pallet nut on an assembly object is provided, please refer to fig. 2, fig. 2 shows a perspective view of the pallet nut installation tool according to some embodiments of the present application, and the pallet nut installation tool comprises a bracket 1, a pressing member 2, a locking member 3 and an extrusion member 4. The bracket 1 includes a first platform part 11, a second platform part 12, and an accommodating space 10 formed between the first platform part 11 and the second platform part 12, wherein a first screw hole 110 is opened in the first platform part 11, and the second platform part 12 has a positioning part 120, and an assembling object can be accommodated in the accommodating space 10, so that the positioning part 120 is in fit connection with the assembling object. The pressing member 2 has a second threaded hole 20 formed therein, and is screwed into the first threaded hole 110 at the outer periphery thereof, so that the pressing member 2 can be extended or retracted toward the second platform part 12 by screwing the pressing member 2. The locking member 3 is screwed to the outer periphery of the pressing member 2 at one side of the first platform portion 11, the pressing member 4 has a pressing end 40, the pressing end 40 is tapered and screwed into the second screw hole 20, and the pressing member 4 is rotated to extend or retract the pressing end 40 to or from the pressing member 2.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein may be combined with other embodiments.

The bracket 1 provides an accommodating space 10 for accommodating an installation object at the time of installation, so as to be engaged with the pressing member 2 and to be clamped on the installation object.

The positioning portion 120 is used for positioning the bracket 1 on the mounting object, so as to maintain and determine the relative position relationship between the bracket 1 and the mounting object, wherein the specific configuration of the positioning portion 120 depends on the mounting object, and the structure of the positioning portion 120 for a specific object will be further detailed later, and will not be described again.

The locking piece 3 and the first threaded hole 110 in the first platform part 11 are in threaded connection with the pressing piece 2 together, a double-nut self-locking structure is formed between the locking piece 3 and the pressing piece 2, the locking piece 3 is tightly attached to the first platform part 11 through screwing, and the pressing piece 2 can be prevented from being loosened in the process of installing the supporting plate nut.

In the process of installing the nut of the supporting plate, the pressing piece 2 is firstly screwed to extend out towards the second platform part 12, so that the end part of the pressing piece 2 and the second platform part 12 are clamped on an installation object in a clamping manner, and meanwhile, the positioning part 120 and the installation object are matched and positioned, so that the pressing piece 2 aligns to the nut of the supporting plate to be installed, then the locking piece 3 is screwed, the pressing piece 2 is further locked, and the positioning of the nut of the supporting plate on the installation object is completed. And then, the extrusion part 4 is rotated, so that the extrusion end 40 of the extrusion part 4 extends out of the pressing part 2, and the head of the support plate nut can be extruded into a bell mouth shape by the thread extrusion force generated by the conical extrusion end 40 and is tightly attached to the conical mouth of the mounting hole in the mounting object, so that the support plate nut is pre-mounted.

This mounting tool for supporting plate nuts can carry out prepositioning centre gripping through first platform portion 11 and pressing member 2 to the supporting plate nut, utilizes two nut self-locking structure to guarantee the stability that presses member 2 positions simultaneously, has guaranteed this mounting tool's location accuracy. After pressing down 2 and aim at the layer board nut, extruded piece 4 is movable along pressing down 2 axes for the reaming direction keeps unanimous with the mounting hole axis, has guaranteed nut installation quality, reduces the disability rate.

Please refer to fig. 2 in combination with fig. 3-5, according to some embodiments of the present application. Fig. 3 is a schematic perspective view illustrating an installed state of a pallet nut installation tool according to some embodiments of the present application, fig. 4 is a schematic sectional view illustrating the installed state of the pallet nut installation tool according to some embodiments of the present application, and fig. 5 is an enlarged partial view of fig. 4. As shown in fig. 3 to 5, the assembly object is a low-pressure turbine shaft front flange 91, the pallet nut is placed behind the low-pressure turbine shaft front flange and has an exposed head portion 8, and the positioning portion 120 is a positioning hole 121 capable of being positioned by being fitted with the head portion 8. The positioning hole 121 has a notch 122, the notch 122 allows the positioning hole 121 to move from the side surface of the head portion 8 to a position where the positioning hole is matched and positioned with the head portion 8, and the inner peripheral profile of the positioning hole 121 can be attached to the cylindrical surface of the head portion 8 of the pallet nut in a matched and positioned state.

It will be appreciated that the inner circumferential profile of the locating aperture 121 conforms to the cylindrical surface of the head portion 8 of the pallet nut so that in the attached condition they fit against each other.

The positioning hole 121 with the notch 122 is matched with the head 8 of the support plate nut, the support plate nut can be sleeved on the outer side of the support plate nut from the notch along the radial direction, the assembly and disassembly are convenient, the support plate nut is not influenced by the limiting conditions that a low-pressure turbine shaft front flange and a low-pressure turbine shaft rear flange are arranged, the nut is close to a cylindrical surface and cannot be connected with an auxiliary wrench, and the support plate nut is easy to install in a limited space. Meanwhile, the inner circumference profile of the positioning hole 121 can be attached to the cylindrical surface of the head 8 of the splint nut in a matching and positioning state, so that the moving directions of the pressing part 2 and the extrusion part 4 after attachment can be kept consistent with the axis of the splint nut, and the installation quality of the splint nut is ensured.

According to some embodiments of the present application, the locking member 3 and the accommodating space 10 are respectively located at both sides of the first platform part 11.

The arrangement is such that the locking member 3 is exposed on the surface of the first platform part 11, so as to facilitate the operation and the locking of the pressing member 2.

According to some embodiments of the present application, the support 1 comprises a longitudinal arm 13 and two transversal arms projecting towards one side of the longitudinal arm, respectively a first platform portion 11 and a second platform portion 12, arranged parallel to each other.

According to some embodiments of the present application, the stand 1 further comprises a grip 14 projecting towards the other side of the longitudinal arm 13.

By manipulating the handle 14, it is possible to facilitate the operable mounting of the pallet nut mounting tool on the mounting object.

According to some embodiments of the present application, the expression member 4 further comprises an operating end 41, the operating end 41 protruding from the pressing member in the assembled state, the operating end 41 having a handle 42.

According to some embodiments of the present application, the handle 42 is a force application rod that protrudes toward one side of the extrusion 4. In one embodiment, handle 42 is movable within extrusion 4 to increase the drive force to extrusion 4 via a force application rod that is slidable within extrusion 4 to effectively avoid interference with the turbine shaft, which would cause extrusion 4 to fail to rotate.

According to some embodiments of the present application, the locking member 3 is a nut.

The steps of mounting the pallet nut on the front flange 91 of the low-pressure turbine shaft by using the pallet nut mounting tool according to one or more embodiments are as follows:

completing the assembly of the pallet nut installation tool as shown in fig. 2;

after the locking piece 3 is loosened, the pressing piece 2 is loosened, and the axial distance between the pressing piece 2 and the second platform part 12 is increased, so that the supporting plate nut can be placed into the mounting hole in the front flange 91 of the low-pressure turbine shaft;

sleeving a splint nut mounting tool on the cylindrical section of the head 8 of the splint nut from the outer side in the radial direction, as shown in fig. 3 to 5;

tightening the pressing piece 2 to enable the second platform part 12 and the pressing piece 2 to clamp the front flange and a supporting plate of the supporting plate nut, so that the supporting plate nut is stably fixed in the mounting hole of the front flange;

the locking piece 3 is screwed down, and the pressing piece 2 is prevented from loosening in a double-nut self-locking mode;

the position of the handle 42 is adjusted, the extruding part 4 is driven to rotate by the handle 42, and the head of the support plate nut can be extruded into a bell mouth shape by the generated thread extruding force and is tightly attached to the conical opening of the mounting hole.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present disclosure, and the present disclosure should be construed as being covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims (8)

1. A pallet nut mounting tool for mounting a pallet nut on an assembly object, comprising:

the bracket comprises a first platform part, a second platform part and an accommodating space formed between the first platform part and the second platform part, wherein a first threaded hole is formed in the first platform part, the second platform part is provided with a positioning part, and the assembly object can be accommodated in the accommodating space so that the positioning part is matched and connected with the assembly object;

The pressing piece is internally provided with a second threaded hole, the periphery of the pressing piece is connected to the first threaded hole in a threaded manner, and the pressing piece can be extended or retracted towards the second platform part by screwing the pressing piece;

a locking member screwed to an outer periphery of the pressing member at one side of the first platform portion; and

the extruded part is provided with an extruded end which is in a conical shape and is in threaded connection with the second threaded hole, and the extruded part can be made to extend out or retract from the extruded end by rotating the extruded part.

2. The pallet nut setting tool of claim 1 wherein said locking member and said receiving space are located on opposite sides of said first platform portion.

3. The pallet nut setting tool of claim 1 wherein said bracket includes a longitudinal arm and two transverse arms projecting toward one side of said longitudinal arm, said transverse arms being said first platform portion and said second platform portion, respectively, said transverse arms being disposed parallel to one another.

4. The pallet nut setting tool of claim 3 wherein said bracket further comprises a grip projecting toward the other side of said longitudinal arm.

5. The pallet nut setting tool of claim 1 wherein said pressing member further comprises an operating end, said operating end projecting from said pressing member in an assembled state, said operating end having a handle.

6. The pallet nut mounting tool of claim 5 wherein said handle is a force application rod projecting toward one side of said extrusion.

7. The mounting tool for the supporting plate nut as claimed in claim 1, wherein the mounting object is a low-pressure turbine shaft front flange, the supporting plate nut is arranged behind the low-pressure turbine shaft front flange and is provided with an exposed head, and the positioning part is a positioning hole which can be matched with the head for positioning;

the positioning hole is provided with a notch, the notch allows the positioning hole to move from the side face of the head to a position matched and positioned with the head, and the inner peripheral profile of the positioning hole can be attached to the head cylindrical surface of the supporting plate nut in the matched and positioned state.

8. The pallet nut installation tool of claim 1 wherein said locking member is a nut.

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