CN106541363B - Locking nut tighten and back off tool - Google Patents
Locking nut tighten and back off tool Download PDFInfo
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- CN106541363B CN106541363B CN201510595126.2A CN201510595126A CN106541363B CN 106541363 B CN106541363 B CN 106541363B CN 201510595126 A CN201510595126 A CN 201510595126A CN 106541363 B CN106541363 B CN 106541363B
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- locking nut
- stent
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- torque
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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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- 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
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
Abstract
The present invention relates to a kind of locking nut tighten and back off tool, the simultaneously locking nut of axial lock gear is set on gear shaft for tightening and unclamping, including torque axis and stent, stent is connect with gear, and it is fixed relative to gear and gear shaft, to prevent gear shaft and gear tightening with being rotated in release process in locking nut, stent has hollow cavity, torque axis is arranged in the hollow cavity of stent, it and can be relative to the inner surface movement of stent, the first end of torque axis is mutually clamped with locking nut, tightening and unclamping for locking nut is realized with the torque of the second end by being applied to torque axis.By the way that stent is fixed, gear shaft and gear tightening with being rotated in release process in locking nut can be effectively prevent, the assembling of aero-engine and the efficiency decomposed can be improved, is more in line with the assembling of aero-engine and the requirement decomposed；In addition, can also overcome the problems, such as that the space of locking nut installation site is more narrow is inconvenient to exert a force.
Description
Technical field
The present invention relates to technical field of engineering machinery more particularly to a kind of locking nut tighten and back off tool.
Background technology
The mounting technology of aero-engine is related to the installation of a large amount of complicated special nuts, such as before high-pressure compressor
Wheel gear locking nut is held, whether these special nuts, which are installed in place, plays a crucial role the operational safety of engine.
In engine assembly and decomposable process, in tightening, in release process for these nuts, torque and protection screw thread etc. are required non-
Chang Yange, it is therefore desirable to which the device of design specialized performs these stringent operations.
Locking operation is carried out to locking nut at present and is mainly the following mode：Torque spanner locking, common wrench lock
The locking of tight and hammering method.These locking modes all there are it is different degrees of the defects of.Torque spanner is locked and common wrench locking
Shortcoming is all to need that spanner of corresponding size is selected to carry out locking operation when locking nut size changes, not only spanner number
Amount is more, and the associated spanner of large scale locking nut is heavier, and it is low to operate time-consuming and laborious efficiency, and torque spanner can only
Locking operation is carried out in shaft end, and, although accurate torque locking can be realized, is being grasped there are the limitation of distance in shaft end locking
It is affected when making by objective environment；Although hammering method locking is not influenced by locking nut size, locked position, operating
Easily generating clast pollution environment in the process influences result of the test, and misoperation can also generate impression, influence a whole set of experimental facilities
Installation accuracy, and hammering method easily damages locking nut, makes it that can not dismantle.
Existing locking nut is tightened with unclamping tooling there are the limitation that structure and function is applicable in, for example operation is again
The defects of design that is miscellaneous, lack the anti-rotation in operating process, guiding, tool structure is scattered, therefore also need to develop to be suitable for aviation
The device tightened with unclamping of special nut during engine assembly decomposes requirement to meet the assembling of aero-engine.
Invention content
The purpose of the present invention is to propose to a kind of locking nut tighten and back off tool, be more in line with aero-engine dress
With the requirement with decomposition.
To achieve the above object, the present invention provides a kind of locking nut tighten and back off tool, for tighten with pine
It opens and is set on gear shaft the simultaneously locking nut of axial lock gear, including torque axis and stent, the stent and the gear
Connection, and fixed relative to the gear and the gear shaft, to prevent the gear shaft and the gear in the locking screw
Female tightens with being rotated in release process, and the stent has hollow cavity, and the torque axis is arranged in the hollow of the stent
Inner cavity, and can be relative to the inner surface movement of the stent, the first end of the torque axis and the locking nut are mutual
Engaging realizes tightening and unclamping for the locking nut with the torque of the second end by being applied to the torque axis.
Further, the Brake Block with hollow cavity is further included, the torque axis can pass through the hollow of the stent
Circumferentially there are multiple extension pawls, gear edge week in inner cavity and the hollow cavity of the Brake Block, one end of the Brake Block
To equipped with multiple locking grooves, the extension pawl can be inserted in the locking groove so that the stent by the Brake Block and
The extension pawl is fixedly connected with the gear.
Further, the stent is set on the Brake Block, and is connected by spline fitted.
Further, the Brake Block is connected by screw with the extension pawl.
Further, screwed ring is provided between the second end of the torque axis and the stent, the screwed ring is
Tubular construction with hollow cavity, the screwed ring are set on the outer surface of the torque axis, the appearance of the screwed ring
Face and the inner surface of the stent are bonded to each other, and can be relative to the bracket slide, and enable to the torque axis
Outer surface and the inner surface of the Brake Block are bonded to each other.
Further, the stent is provided with first baffle close to the side of the screwed ring, and the screwed ring can lead to
Bolt is crossed to be fixedly connected on the first baffle.
Further, one end of the locking nut is circumferentially arranged with spaced apart torsional channel, the adjacent torque
Protrusion is formed between slot, the first end of the torque axis is circumferentially arranged with spaced apart torsion pass tooth, the torsional channel and institute
The mutual cooperation of torsion pass tooth is stated, so that the torque axis is mutually clamped with the locking nut.
Further, the side of the torsion pass tooth is equipped with axial limiting tooth, and the inner surface of the protrusion is equipped with axially admittedly
Determine slot, the axial limiting tooth is inserted into the axial restraint slot, to connect the torque axis and the locking nut, and
It can prevent the torque axis from disengaging.
Further, the end set of the gear shaft has locking elastic ring, for preventing the locking nut from loosening, institute
The first end for stating torque axis is provided with end tooth pressure ring, for open-top and compress the locking elastic ring.
Further, guide device is further included, the torque axis has hollow cavity, and the guide device is arranged in described
The hollow cavity of torque axis, and ensure that the axis of the guide device is overlapped with the axis of the torque axis, to guide the torsion
Square axis and realize screw thread on the locking nut and the gear shaft to just.
Further, the guide device includes the axis and seeker that are fixedly connected, and the axis is pacified by the seeker
On inner surface loaded on the gear shaft, the outer surface of the seeker and the inner surface of the gear shaft are bonded to each other, with right
The locking nut guides and to just.
Further, the second end outer surface of the torque axis is equipped with spline head, and the spline head is used to install torque
Multiplier.
Based on above-mentioned technical proposal, tighten and the back off tool of locking nut of the invention include torque axis and stent, branch
Frame is connect with gear, and stent is fixed relative to gear and gear shaft, gear and gear shaft can be effectively prevent to lock in this way
Tight nut being tightened and being rotated in release process, avoids tightening since gear and gear shaft rotation cause locking nut can not be successfully
With release, the efficiency that can be improved the assembling of aero-engine and decompose, the assembling for being more in line with aero-engine is wanted with what is decomposed
It asks；In addition, by setting torque axis, the torque for being applied to locking nut can be transferred to torque axis in itself by locking nut
End, can overcome the problems, such as that the space of locking nut installation site is more narrow in this way is inconvenient to exert a force.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and forms the part of the application, this hair
Bright illustrative embodiments and their description do not constitute improper limitations of the present invention for explaining the present invention.In the accompanying drawings：
Fig. 1 is the knot of one embodiment that locking nut of the present invention and locking nut cooperate with gear shaft, gear
Structure schematic diagram.
Fig. 2 is the structure diagram tightened with back off tool one embodiment of locking nut of the present invention.
Fig. 3 is the cut-away illustration tightened with back off tool one embodiment of locking nut of the present invention.
Fig. 4 is the structure diagram of first end one embodiment of torque axis of the present invention.
Fig. 5 is the structure diagram tightened with back off tool one embodiment in operation of locking nut of the present invention.
Fig. 6 is the structure diagram of torque axis one embodiment of the present invention.
In figure：1- locking nuts, 2- gear shafts, 3- gears, 4- locking grooves, 5- thread segments, the locking elastic rings of 6-, 7- torques
Slot, 8- axial restraint slots, 9- protrusions；
11- hangs pawl, 12- Brake Blocks, 13- screws, 14- guide devices, 141- axis, 142- seekers, 15- stents, 16- the
One bolt, 17- screwed rings, 18- torque axis, 19- end tooth pressure rings, 20- spline heads, the second bolts of 21-, 22- third bolts, 23-
Torque multiplier, 24- torsion pass teeth, 25- grooves, 26- axial limiting teeth, 27- first baffles, 28- second baffles.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in embodiment is clearly and completely retouched
It states.Obviously, described embodiment is only the part of the embodiment of the present invention, instead of all the embodiments.Based on this hair
Bright embodiment, the every other implementation that those of ordinary skill in the art are obtained without making creative work
Example, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that term " " center ", " transverse direction ", " longitudinal direction ", "front", "rear",
The orientation or position relationship of the instructions such as "left", "right", " on ", " under ", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description rather than instruction or dark
Show that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that right
The limitation of the scope of the present invention.
As shown in Figure 1, the implementation to cooperate for locking nut of the present invention and locking nut with gear shaft, gear
The structure diagram of example.Gear 3 is fixedly mounted on by covering tooth or spline on gear shaft 2, and the front end of gear shaft 2 is equipped with thread segment
5, the inner surface of locking nut 1 is equipped with screw thread, and locking nut 1 is set on gear shaft 2, and passes through the screw thread and tooth of inner surface
Thread segment 5 on wheel shaft 2 cooperates, and axial lock is carried out to gear 3.
As shown in figure 3, the cut-away illustration tightened with back off tool one embodiment for locking nut of the present invention.The lock
Tightening for tight nut includes torque axis 18 and stent 15 with back off tool, and the stent 15 is connect with the gear 3, and relative to
The gear 3 and the gear shaft 2 are fixed, to prevent the gear shaft 2 and the gear 3 tightening in the locking nut 1
With being rotated in release process, the stent 15 has hollow cavity, and the torque axis 18 is arranged in the hollow interior of the stent 15
Chamber, and can be relative to the inner surface movement of the stent 15, the first end of the torque axis 18 and 1 phase of locking nut
Mutually engaging realizes tightening and unclamping for the locking nut 1 with the torque of the second end by being applied to the torque axis 18.
In above-described embodiment, tightening for locking nut includes torque axis and stent with back off tool, and stent is connect with gear,
And stent is fixed relative to gear and gear shaft, can effectively prevent in this way gear and gear shaft locking nut tighten with
It is rotated in release process, avoids tightening and unclamping, can improve since gear and gear shaft rotation cause locking nut can not be successfully
The assembling of aero-engine and the efficiency decomposed, are more in line with the assembling of aero-engine and the requirement decomposed；In addition, by setting
Torque axis is put, the torque for being applied to locking nut can be in itself transferred to the end of torque axis by locking nut, it in this way can be with
Overcoming the problems, such as that the space of locking nut installation site is more narrow is inconvenient to exert a force.
The specific constructive form of stent 15 can be there are many different selections, as long as enabling to stent in above-described embodiment
15 can fix relative to gear 3 and gear shaft 2, and play and prevent the tightening and release process transfer in locking nut 1 of gear 3
Dynamic effect.
As shown in Fig. 2, stent 15 is tubular construction, the hollow cavity of stent 15 is preferably set to cylinder, with convenient
Torque axis 18 rotates in it, and easily fabricated.The shape of stent 15 can be cylinder, or it is rectangular or other
Shape.In Fig. 2 embodiments, stabilizer blade there are four settings on the outer surface of stent 15, four stabilizer blades are equipped with through-hole, and stent 15 can lead to
It crosses multiple first bolts 16 to be fixedly mounted on fixing piece, fixing piece can be fixed any structure, such as in aviation
In engine, stent 15 can be fixed on stator part, so that gear 3 and gear shaft 2 are in the mistake for tightening or unclamping locking nut 1
It is fixed relative to stator part in journey, the rotation of gear 3 and gear shaft 2 is avoided to tightening or unclamping 1 process of locking nut
It influences.
It, can be directly in the end of stent 15 circumferentially multiple extension pawls in order to realize the connection of stent 15 and gear 3
11, it is connect by hanging pawl 11 with gear 3；Can also the Brake Block with hollow cavity be set between stent 15 and extension pawl 11
12, the torque axis 18 can pass through the hollow cavity of the stent 15 and the hollow cavity of the Brake Block 12, the braking
Circumferentially there are multiple extension pawls 11 in one end of seat 12, as shown in Figure 1, the gear 3 is circumferentially arranged with multiple locking grooves 4, it is excellent
Selection of land, locking groove 4 are slotted hole, and hanging pawl 11 has hook portion, and the extension pawl 11 can be inserted in the locking groove 4, so that
The stent 15 is fixedly connected by the Brake Block 12 and the extension pawl 11 with the gear.
Wherein, it being fixedly connected between stent 15 and Brake Block 12, specific implementation can have more flexible selection,
For example it may be used and be bolted or pin joint etc..In a preferred embodiment, the stent 15 is set in the braking
On seat 12, and connected by spline fitted.Specifically, the inner surface of stent 15 is equipped with spline, and the outer surface of Brake Block 12 is equipped with
Spline, stent 15 are set in the outside of Brake Block 12, to realize the connection of stent 15 and Brake Block 12 by spline fitted.Separately
Outside, using spline be connected between stent 15 and Brake Block 12 and be also an advantage that, being exactly can be to stent 15 and system
Axial position between dynamic seat 12 is finely adjusted, and can increase or shorten according to actual needs the entire length of tool.
In addition, the Brake Block 12 and connection mode hung between pawl 11 can also select to be bolted or pin joint etc..One
In a preferred embodiment, the Brake Block 12 is connect with the extension pawl 11 by screw 13.It is tightened to locking nut 1
Before release, first screw 13 can be unclamped, the head for hanging pawl 11 is hooked in the locking groove 4 of 3 rear portion of gear setting, so
Screw 13 is tightened again afterwards, to realize the connection of stent 15 and gear 3.
Since stent 15 is set on Brake Block 12, the diameter of the hollow cavity of stent 15 is more than the hollow interior of Brake Block 12
The diameter of chamber, therefore led to when torque axis 18 is threaded through by what the hollow cavity of stent 15 and the hollow cavity of Brake Block 12 were formed
When in road, there is certain gap between the inner surface of torque axis 18 and stent 15.Due to the presence in the gap, in locking nut
In 1 release process, when torque axis 18 is retracted into the inner surface for being detached from Brake Block 12, the central axes of torque axis 18 may be inclined
From can make locking nut 1 can not be with the screw thread on gear shaft 2 to just.
To solve the above-mentioned problems, in a preferred embodiment, the second end of the torque axis 18 and the branch
Screwed ring 17 is provided between frame 15, the screwed ring 17 is the tubular construction with hollow cavity, and the screwed ring 17 is arranged
On the outer surface of the torque axis 18, the outer surface of the screwed ring 17 and the inner surface of the stent 15 are bonded to each other, and
It can be slided relative to the stent 15, and enable to the outer surface of the torque axis 18 and the inner surface of the Brake Block 12
It is bonded to each other.In this way, the tightening with that can play the role of in release process to just and centering in locking nut 1 of screwed ring 17,
The axis of bootable torque axis 18 without departing from.
In addition, gap can be set in the back segment that screwed ring 17 and stent 15 are bonded to each other, for injecting lubricating oil, make spiral shell
Line ring 17 can be slided more successfully relative to the inner surface of stent 15.Connection mode between screwed ring 17 and torque axis 18
Can be to weld or be spirally connected, it is preferable that the inner surface of screwed ring 17 is equipped with screw thread, and the outer surface of torque axis 18 is equipped with screw thread,
Therebetween connection is threadably secured, can realize that torque axis 18 drives screwed ring 17 to be slided along the inner surface of stent 15 in this way
It is dynamic, and torque axis 18 is slided close to the part of first end along the inner surface of Brake Block 12.
In tightening and in release process, screwed ring 17 is rotated with torque axis 18 for locking nut 1, when torque axis 18 not
During rotation, screwed ring 17 can be fixed on stent 15.Specifically, in a preferred embodiment, the stent 15 is close
The side of the screwed ring 17 is provided with first baffle 27, and when torque axis 18 is stopped, the screwed ring 17 can pass through
Third bolt 22 is fixedly connected on the first baffle 27, to prevent screwed ring 17 in the moving process of entire tool from torsion
It comes off on square axis 18.
As shown in Figure 1, one end of the locking nut 1 is circumferentially arranged with spaced apart torsional channel 7, the adjacent torsion
Protrusion 9 is formed between square slot 7, the torsional channel 7 and protrusion 9 are extended along the axial direction of locking nut 1；It is as shown in figure 4, described
The first end of torque axis 18 forms groove 25 circumferentially arranged with spaced apart torsion pass tooth 24 between adjacent torsion pass tooth 24,
The torsion pass tooth 24 and groove 25 are extended along the axial direction of torque axis 18, the torsional channel 7 and the 24 phase interworking of torsion pass tooth
It closes, so that the torque axis 18 is mutually clamped with the locking nut 1.Certainly, for locking nut 1 as shown in Figure 1, torque
The end of axis 18 can set the torsion pass tooth 24 coordinated with its torsional channel 7, realize the card between torque axis 18 and locking nut 1
It closes, for the locking nut 1 of other forms, the end of torque axis 18 can also set other structures, to lock nut 1,
Realize the connection of torque axis 18 and locking nut 1.
In order to prevent torque axis 18 locking nut 1 tighten or release process in play in an axial direction, as shown in figure 4,
Axial limiting tooth 26 can also be equipped in the side of the torsion pass tooth 24, which refers to along the circumferential side of torsion pass tooth 24,
Axial limiting tooth 26 is the tooth for protruding above-mentioned side, as shown in Figure 1, raised 9 inner surface is equipped with axial restraint slot 8,
The inner surface of the protrusion 9 refers to protrusion close to the surface of the central axes of locking nut 1, and the axial limiting tooth 26 is inserted into institute
It states in axial restraint slot 8, to connect the torque axis 18 and the locking nut 1, and can prevent the torque axis 18 from disengaging.
Axial limiting tooth 26 is fastened in axial restraint slot 8, can prevent from being transported in an axial direction with locking nut in release process 1 tightening
It is dynamic, that is, prevent torque axis 18 from being disengaged from locking nut 1 in rotation process.
As shown in Figure 1, the end set of the gear shaft 2 has locking elastic ring 6, for preventing the locking nut 1 from existing
It is loosened under working condition, after which refers to that locking nut 1 is tightened, at locking nut 1 and gear 3,2 entirety of gear shaft
In working condition.The locking elastic ring 6 is the state to stick up before locking nut 1 is tightened, in order to prevent in locking screw
Mother 1 is tightened in place before just by locking 6 locking of elastic ring, in a preferred embodiment, the first end of the torque axis 18
Portion is provided with end tooth pressure ring 19, for open-top and compress the locking elastic ring 6, to ensure that locking nut 6 can assemble in place.
End tooth pressure ring 19 can be fixedly connected on the first end of torque axis 18, for example be spirally connected, weld or pin joint etc., can also be with torsion
Square axis 18 is integrally manufactured.Preferably, end tooth pressure ring 19 is welded to connect with torque axis 18, it is easy to accomplish.
In order to locking nut 1 further be helped to be felt relieved and to just, locking nut of the present invention tighten and back off tool
It can also include guide device 14, the torque axis 18 has hollow cavity, and the guide device 14 is arranged in the torque axis
18 hollow cavity, and ensure that the axis of the guide device 14 is overlapped with the axis of the torque axis 18, to guide the torsion
Square axis 18 and realize screw thread on the locking nut 1 and the gear shaft 2 to just.The guide device 14, can before tightening,
First guide torque axis 18 by locking nut 1 in the unswerving thread segment for being correctly set in gear shaft 2 in central axes, axis
Line is without departing from can be to avoid the damage of screw thread；Then in rundown process, it is also ensured that locking nut 1 is without departing from ground and screw thread
Cooperation is carried out to tighten；In release process, it is also possible to prevent screw thread caused by central axes are deviateed and damages.
The structure of specific guide device 14 can have more flexible selection, in a preferred embodiment, described
Guide device 14 includes the axis 141 being fixedly connected and seeker 142, and the axis 141 is installed on described by the seeker 142
On the inner surface of gear shaft 2, the outer surface of the seeker 142 and the inner surface of the gear shaft 2 are bonded to each other, with to described
Locking nut 1 guides and to just.The effect of the seeker 142 is that axis 141 can be caused to be made relatively thin, so as to subtract
The weight of light entire frock tool, as long as the end of seeker 142 can be bonded with the inner surface of gear shaft 2.
In embodiment as shown in Figure 3, seeker 142 is stair-stepping cylindrical structure form, this is only guided certainly
A kind of preferred constructive form of head, does not form limitation ot it, seeker 142 specific constructive form can there are many select
It selects, as long as its end can be bonded to each other with the inner surface of gear shaft 2.In another embodiment as shown in Figure 6, seeker
142 be pyramidal structure form.
In addition, axis 141 can be made on hollow or 141 outer surface of axis digging cavity, further to mitigate entirety
Weight.
In addition, torque axis 18, end tooth pressure ring 19, Brake Block 12 and stent 15 can dig cavity, to mitigate the whole of tool
Body weight.
In order to reduce artificial participation, manpower is saved, in a preferred embodiment, as shown in figure 5, the torque axis 18
The second end outer surface be equipped with spline head 20, spline head 20 can be fixedly connected on the of torque axis 18 by the second bolt 21
Two ends, the spline head 20 for installing torque multiplier 23, the torque multiplier 23 may be mounted at on stent 15
On the second baffle 28 that first baffle 27 is fixedly connected.The requirement of tightening of high-torque can be realized using torque multiplier, and
Its Interface Expanding is good, can be used cooperatively with pneumatic impact spanner, is easy to implement tightening for high-torque, improves in operating process
Efficiency.
Below in conjunction with the accompanying drawings 1~5, to locking nut of the present invention tighten and the assembling of one embodiment of back off tool is closed
System and the course of work are described in detail：
Referring to Fig. 1, gear 3 is by covering tooth on gear shaft 2, and locking nut 1 is by being threadably mounted on gear shaft 2
For axial lock gear 3.Gear 3 is equipped with locking groove 4, and for fixed stop, the front end of locking nut 1 is equipped with torsional channel 7
Coordinated with axial restraint slot 8 for applying torque, between locking nut 1 and gear shaft 2 with locking elastic ring 6 locking.
As shown in Figure 2-5, Brake Block 12, preferably columnar structured, there is flower in outer surface to specific each component matching relationship
Key, front end are connected by screw 13 with hanging pawl 11, are hung pawl 11 and are buckled in the locking groove 4 on gear 3.Hang pawl 11 and columnar system
Dynamic seat 12 is connected by screw 13.It is set outside stent 15 there are four stabilizer blade, inner surface has spline, passes through the first bolt 16 and outside
Stator part is fixed, and on the internal spline being mounted on outside Brake Block 12 by covering tooth, gear 3 is connected with external structure,
Prevent the rotation in operating process.Screwed ring 17 is tightened in the outside of torque axis 18 by internal thread, and torque axis 18 passes through braking
Seat 12 and stent 15, and can be slided in inner surface.Torque axis 18, tubular structure is dismountable, and the front end of torque axis 18, which is equipped with, to be passed
Tooth 24 is turned round, complementary with the torsional channel 7 of locking nut 1, for applying torque, axial limiting tooth 26 is used for axial lock torque axis
18, referring to Fig. 4.After the front end of torque axis 18 is contacted with locking nut 1, it is preferably welded on the cylindrical shape of the forepart of torque axis 18
End tooth pressure ring 19 can be with open-top locking elastic ring 6.The spline head 20 of 18 rear end of torque axis can pass through the spline toe joint of outer surface
Torque multiplier 23 and pneumatic impact spanner etc..Guide device 14, preferably long axis shape are installed to gear shaft 2 by seeker 142
On inner surface, coordinate with the cylindrical conduit inside torque axis 18, it is freely slidable inside pipeline, before facilitating thread contact
To the centering and guiding just and in operating process, the thread damage in operating process is prevented.
Specifically the course of work is：Entire tool is integrally formed after installation is complete, first unscrews screw 13, will hang pawl 11
It is buckled on the locking groove 4 at 3 rear portion of gear, then tightens screw 13；Stent 15 and stator part are fixed by the first bolt 16 again
Connection realizes the fixation of stent 15, gear 3 and gear shaft 2 in this way；Locking nut 1 is fastened on the first of torque axis 18
End is mutually clamped torsional channel 7 and the torsion pass tooth 24 of 18 first end of torque axis on locking nut 1, and by axial limiting
Tooth 26 is inserted into the axial restraint slot in the protrusion 9 of locking nut 1, to carry out axially position to torque axis 18；Then guiding is filled
The seeker 142 for putting 14 acts against the inner surface of gear shaft 2, rotation torque axis 18, while guide using guide device 14
With to locking nut 1 just, to be sleeved on to the thread segment of gear shaft 2, continue rotation torque axis 18, using end tooth pressure ring 19 by locking bullet
Property circle 6 it is open-top, continue rotation torque axis 18, locking nut 1 tightened.It, can be in spline in the rotation process of torque axis 18
Torque multiplier 23 is assembled on first 20, torque is applied to torque axis 18 with pneumatic impact spanner cooperation.
When needing to unclamp locking nut 1, torque axis 18 is reversely rotated, while guide using guide device 14, prevented
Axis runout causes screw thread to damage when only torque axis 18 is retracted.When torque axis 18 drives locking nut 1 to completely disengage thread segment 5
When, dismantlement work finishes.
In the embodiment of the present invention, force application part is with brake component in the front end of locking nut 1, more traditional split type work
Tool is more integrated and stablizes.In addition the cylindrical conduit cooperation guiding inside prosenchymatous guide device 14 and torque axis 18, fixed
The heart, more traditional instrumental function more optimize, and operation is more convenient, and operating process is more less likely to be damaged part.
Pass through the explanation tightened with multiple embodiments of back off tool to locking nut of the present invention, it can be seen that the present invention
Tightening for locking nut at least has the advantages that one or more of with back off tool embodiment：
1st, stop measure is inverted：Stent is fixed, the rotation of gear and gear shaft is prevented in rundown process, increases power
The accuracy and efficiency that square applies.Stent reduces and turns in being included in as tooling stator part, by the toolings rotating member such as torque axis
The possibility that moving part is caused danger.
2nd, guiding, to just, centering：There is guide device to guide in operating process, can facilitate to just, can also prevent hand
Dynamic tighten in release process due to axis runout and there is a situation where screw thread damages.
3rd, meet high-torque and tighten requirement：It needs to realize when tightening of high-torque in operating process, it can be by increasing torque
Multiplier is realized.
Finally it should be noted that：The above embodiments are merely illustrative of the technical scheme of the present invention and are not intended to be limiting thereof；To the greatest extent
The present invention is described in detail with reference to preferred embodiments for pipe, those of ordinary skills in the art should understand that：Still
It can modify to the specific embodiment of the present invention or equivalent replacement is carried out to some technical characteristics；Without departing from this hair
The spirit of bright technical solution should all cover in the claimed technical solution range of the present invention.
Claims (11)
1. a kind of locking nut tighten and back off tool, be set on gear shaft (2) and axial lock with release for tightening
The locking nut (1) of gear (3), which is characterized in that including torque axis (18) and stent (15), the stent (15) and the tooth
(3) connection is taken turns, and fixed relative to the gear (3) and the gear shaft (2), to prevent the gear shaft (2) and the tooth
(3) tightening with being rotated in release process in the locking nut (1) is taken turns, the stent (15) has hollow cavity, the torsion
Square axis (18) is arranged in the hollow cavity of the stent (15), and can be relative to the inner surface movement of the stent (15), institute
The first end and the locking nut (1) for stating torque axis (18) are mutually clamped, with by being applied to the torque axis (18)
The torque of the second end realizes tightening and unclamping for the locking nut (1)；The locking nut is tightened with back off tool also
Including guide device (14), the torque axis (18) has hollow cavity, and the guide device (14) is arranged in the torque axis
(18) hollow cavity, and ensure that the axis of the guide device (14) is overlapped with the axis of the torque axis (18), with guiding
The torque axis (18) and realize screw thread on the locking nut (1) and the gear shaft (2) to just.
2. locking nut according to claim 1 tighten and back off tool, which is characterized in that further include with hollow interior
The Brake Block (12) of chamber, the torque axis (18) can pass through the hollow cavity of the stent (15) and the Brake Block (12)
Circumferentially there are multiple extension pawls (11) in hollow cavity, one end of the Brake Block (12), and the gear (3) is circumferentially arranged with more
A locking groove (4), the extension pawl (11) can be inserted in the locking groove (4), so that the stent (15) passes through the system
Dynamic seat (12) and the extension pawl (11) are fixedly connected with the gear.
3. locking nut according to claim 2 tighten and back off tool, which is characterized in that the stent (15) is arranged
It is connected on the Brake Block (12), and by spline fitted.
4. locking nut according to claim 2 tighten and back off tool, which is characterized in that the Brake Block (12) with
The extension pawl (11) is connected by screw (13).
5. locking nut according to claim 2 tighten and back off tool, which is characterized in that the torque axis (18)
Screwed ring (17) is provided between the second end and the stent (15), the screwed ring (17) is the tubular with hollow cavity
Structure, the screwed ring (17) are set on the outer surface of the torque axis (18), the outer surface of the screwed ring (17) and institute
The inner surface for stating stent (15) is bonded to each other, and can be slided relative to the stent (15), and enable to the torque axis
(18) inner surface of outer surface and the Brake Block (12) is bonded to each other.
6. locking nut according to claim 5 tighten and back off tool, which is characterized in that the stent (15) is close
The side of the screwed ring (17) is provided with first baffle (27), and the screwed ring (17) can be fixed by third bolt (22)
It is connected on the first baffle (27).
7. locking nut according to claim 1 tighten and back off tool, which is characterized in that the locking nut (1)
One end circumferentially arranged with spaced apart torsional channel (7), raised (9), the torsion are formed between the adjacent torsional channel (7)
The first end of square axis (18) is circumferentially arranged with spaced apart torsion pass tooth (24), the torsional channel (7) and the torsion pass tooth
(24) it cooperates, so that the torque axis (18) is mutually clamped with the locking nut (1).
8. locking nut according to claim 7 tighten and back off tool, which is characterized in that the torsion pass tooth (24)
Side is equipped with axial limiting tooth (26), and the inner surface of the protrusion (9) is equipped with axial restraint slot (8), the axial limiting tooth
(26) it is inserted into the axial restraint slot (8), to connect the torque axis (18) and the locking nut (1), and can
Prevent the torque axis (18) from disengaging.
9. locking nut according to claim 7 tighten and back off tool, which is characterized in that the gear shaft (2)
End set has locking elastic ring (6), for preventing the locking nut (1) from loosening, the first end of the torque axis (18)
End tooth pressure ring (19) is provided with, for open-top and compress the locking elastic ring (6).
10. locking nut according to claim 1 tighten and back off tool, which is characterized in that the guide device
(14) including the axis (141) being fixedly connected and seeker (142), the axis (141) is installed on institute by the seeker (142)
On the inner surface for stating gear shaft (2), the outer surface of the seeker (142) and the inner surface of the gear shaft (2) are bonded to each other,
To guide and the locking nut (1) to just.
11. locking nut according to claim 1 tighten and back off tool, which is characterized in that the torque axis (18)
The second end outer surface be equipped with spline head (20), the spline head (20) is for installing torque multiplier (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510595126.2A CN106541363B (en) | 2015-09-18 | 2015-09-18 | Locking nut tighten and back off tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510595126.2A CN106541363B (en) | 2015-09-18 | 2015-09-18 | Locking nut tighten and back off tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106541363A CN106541363A (en) | 2017-03-29 |
| CN106541363B true CN106541363B (en) | 2018-07-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510595126.2A Active CN106541363B (en) | 2015-09-18 | 2015-09-18 | Locking nut tighten and back off tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106541363B (en) |
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| CN107097066A (en) * | 2017-05-24 | 2017-08-29 | 徐工集团工程机械有限公司 | Location nut provision for disengagement |
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| CN112276539B (en) * | 2019-07-25 | 2022-05-24 | 中国航发商用航空发动机有限责任公司 | Device and method for screwing nut of aircraft engine |
| GB201911337D0 (en) * | 2019-08-08 | 2019-09-25 | Grove Design Pembridge Ltd | Shoring support structure |
| CN112388293B (en) * | 2019-08-14 | 2022-06-28 | 中国航发商用航空发动机有限责任公司 | Nut force limiting device |
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| CN113858119B (en) * | 2020-06-30 | 2022-12-20 | 中国航发商用航空发动机有限责任公司 | Unlocking tool |
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| CN113370153B (en) * | 2021-06-30 | 2022-09-30 | 中国航发贵州黎阳航空动力有限公司 | Torque amplification type nut dismounting device |
| CN113478431B (en) * | 2021-07-22 | 2022-10-11 | 哈尔滨电气动力装备有限公司 | Large-scale shielding motor thrust disc nut mounting and locking process |
| CN113894731B (en) * | 2021-10-10 | 2023-05-05 | 中国航发沈阳发动机研究所 | Deep shaft cavity compression nut tightening force limiting tool |
| CN113878328B (en) * | 2021-11-10 | 2022-12-23 | 中国航发南方工业有限公司 | Flow guide disc assembling device and method |
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| CN106541363A (en) | 2017-03-29 |
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Address after: 200241 Minhang District Lianhua Road, Shanghai, No. 3998 Applicant after: China Hangfa commercial aviation engine limited liability company Address before: 200241 Minhang District Lianhua Road, Shanghai, No. 3998 Applicant before: AVIC Commercial Aircraft Engine Co.,Ltd. |
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