CN204997619U - Lock nut screws up and loosens instrument - Google Patents
Lock nut screws up and loosens instrument Download PDFInfo
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- CN204997619U CN204997619U CN201520723284.7U CN201520723284U CN204997619U CN 204997619 U CN204997619 U CN 204997619U CN 201520723284 U CN201520723284 U CN 201520723284U CN 204997619 U CN204997619 U CN 204997619U
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Abstract
The utility model relates to a lock nut screws up and loosens instrument for screw up and loosen that the cover is established on the gear shaft and the lock nut of axial locking gear, including torque axis and support, support and gear connection to it is fixed for gear and gear shaft, rotate with unclamping the in -process tightening of lock nut in order to prevent gear shaft and gear, the support has a cavity inner chamber, and the cavity inner chamber of support is worn to locate by the torque axis, and can be for the internal surface motion of support, and the first end and the mutual block of lock nut of torque axis are in order to realize tightening of lock nut and to unclamp in the moment of the second end of torque axis through exerting. Through fixed with the support, can prevent effectively that gear shaft and gear from rotating with loosening the in -process screwing up of lock nut, can improve the efficiency of aeroengine's assembly yu decomposition, accord with aeroengine's the assembly and the requirement of decomposition more, in addition, still can overcome the problem of the comparatively narrow inconvenient application of force in space of locking nut installed position.
Description
Technical field
The utility model relates to technical field of engineering machinery, particularly relates to tightening and back off tool of a kind of locking nut.
Background technology
The mounting technology of aero-engine relates to the installation of a large amount of baroque special nut, such as high-pressure compressor front end wheel gear locking nut, and whether these special nuts are in place and play vital effect to the security of operation of engine.In engine assembly Sum decomposition process, in the tightening of these nuts, release process, require very strict to moment and protection screw thread etc., therefore need the device of design specialized to perform these strict operations.
Carrying out locking operation to locking nut mainly contains following several mode at present: torque spanner locking, common wrench locking and hammering method locking.All there is defect in various degree in these locking modes.Torque spanner locking is all need the spanner selecting corresponding size to carry out locking operation when locking nut size changes to the shortcoming that common wrench is locked, not only spanner quantity is many, and the associated spanner of large scale locking nut is heavier, operate the efficiency that wastes time and energy low, and torque spanner can only carry out locking operation at axle head, and the restriction of distance is there is in axle head locking, although accurate torque locking can be realized, affect larger by objective environment when operating; Although hammering method locking is not by the impact of locking nut size, locked position, but very easily produce debris contamination ambient influnence result of the test in operation, misoperation also can produce impression, affect a whole set of experimental facilities installation accuracy, and hammering method easily damages locking nut, it is made to dismantle.
Existing locking nut tighten with unclamp frock all exist 26S Proteasome Structure and Function be suitable for limitation, such as complicated operation, lack the design of the anti-rotation in operating process, guiding, the defects such as tool structure is scattered, therefore also need to develop the device tightened with unclamp being suitable for special nut in aero-engine assembling process, decompose requirement with the assembling meeting aero-engine.
Utility model content
The purpose of this utility model proposes tightening and back off tool of a kind of locking nut, more to meet aero-engine assembling and the requirement of decomposing.
For achieving the above object, the utility model provides tightening of a kind of locking nut and back off tool, for tightening and unclamping the locking nut being set in also axial lock fixed gear on gear shaft, comprise torque axis and support, described support is connected with described gear, and fix relative to described gear and described gear shaft, with prevent described gear shaft and described gear described locking nut tighten with release process in rotate, described support has hollow cavity, described torque axis is arranged in the hollow cavity of described support, and can relative to the inner surface movement of described support, the first end of described torque axis engages mutually with described locking nut, realize tightening of described locking nut with the moment of the second end by putting on described torque axis and unclamp.
Further, also comprise the Brake Block with hollow cavity, described torque axis can pass the hollow cavity of described support and the hollow cavity of described Brake Block, circumferentially there is multiple extension pawl one end of described Brake Block, described gear is circumferentially provided with multiple locking groove, described extension pawl can be inserted in described locking groove, is fixedly connected with by described Brake Block to make described support with described extension pawl with described gear.
Further, described support casing is located on described Brake Block, and is connected by spline fitted.
Further, described Brake Block and described extension pawl are connected by screw.
Further, threaded collar is provided with between the second end of described torque axis and described support, described threaded collar is the tubular construction with hollow cavity, described threaded collar is set on the outer surface of described torque axis, the outer surface of described threaded collar and the inner surface of described support bonded to each other, and can relative to described bracket slide, and the inner surface of the outer surface of described torque axis and described Brake Block can be made bonded to each other.
Further, described support is provided with the first baffle plate near the side of described threaded collar, and described threaded collar can be bolted to connection on described first baffle plate.
Further, one end of described locking nut is circumferentially provided with spaced apart torsional channel, formed protruding between adjacent described torsional channel, the first end of described torque axis is circumferentially provided with spaced apart torsion pass tooth, described torsional channel and described torsion pass tooth cooperatively interact, and mutually engage with described locking nut to make described torque axis.
Further, the side of described torsion pass tooth is provided with axial limiting tooth, and the inner surface of described projection is provided with axial restraint groove, and described axial limiting tooth can insert in described axial restraint groove, to connect described torque axis and described locking nut, and can prevent described torque axis from throwing off.
Further, the end of described gear shaft is provided with locking elastic ring, and for preventing described locking nut from loosening, the first end of described torque axis is provided with end tooth pressure ring, for backing down and compressing described locking elastic ring.
Further, also comprise guiding device, described torque axis has hollow cavity, described guiding device is arranged in the hollow cavity of described torque axis, and ensure the axis of described guiding device and the dead in line of described torque axis, to guide described torque axis and to realize aligning of screw thread on described locking nut and described gear shaft.
Further, described guiding device comprises the axle and seeker that are fixedly connected with, described axle is installed on the inner surface of described gear shaft by described seeker, the outer surface of described seeker and the inner surface of described gear shaft bonded to each other, to guide described locking nut and to align.
Further, the second end outer surface of described torque axis is provided with spline head, and described spline head is used for mounting torque multiplier.
Based on technique scheme, tightening of locking nut of the present utility model comprises torque axis and support with back off tool, support is connected with gear, and support is fixed relative to gear and gear shaft, can effectively prevent like this gear and gear shaft locking nut tighten with release process in rotate, avoid causing locking nut cannot to tighten smoothly and unclamp because gear and gear shaft rotate, the assembling of aero-engine and the efficiency of decomposition can be improved, more meet the assembling of aero-engine and the requirement of decomposition; In addition, by arranging torque axis, the moment putting on locking nut can be transferred to the end of torque axis by locking nut itself, the comparatively narrow problem of being inconvenient to exert a force in space of locking nut installation site can be overcome like this.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide further understanding of the present utility model, and form a application's part, schematic description and description of the present utility model, for explaining the utility model, is not formed improper restriction of the present utility model.In the accompanying drawings:
Fig. 1 is the structural representation of the embodiment that the utility model locking nut and locking nut and gear shaft, gear cooperatively interact.
Fig. 2 is the structural representation with a back off tool embodiment of tightening of the utility model locking nut.
Fig. 3 is the cut-away illustration with a back off tool embodiment of tightening of the utility model locking nut.
Fig. 4 is the structural representation of a first end embodiment of the utility model torque axis.
Fig. 5 is tightening and the structural representation of a back off tool embodiment when operating of the utility model locking nut.
Fig. 6 is the structural representation of the utility model torque axis embodiment.
In figure: 1-locking nut, 2-gear shaft, 3-gear, 4-locking groove, 5-thread segment, the locking elastic ring of 6-, 7-torsional channel, 8-axial restraint groove, 9-is protruding;
11-hangs pawl, 12-Brake Block, 13-screw, 14-guiding device, 141-axle, 142-seeker, 15-support, 16-first bolt, 17-threaded collar, 18-torque axis, 19-end tooth pressure ring, 20-spline head, 21-second bolt, 22-the 3rd bolt, 23-torque multiplier, 24-torsion pass tooth, 25-groove, 26-axial limiting tooth, 27-first baffle plate, 28-second baffle.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in embodiment is clearly and completely described.Obviously, described embodiment is only a part of embodiment of the present utility model, instead of whole embodiments.Based on embodiment of the present utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
In description of the present utility model, it will be appreciated that, term " " center ", " transverse direction ", " longitudinal direction ", " front ", " afterwards ", " left side ", " right side ", " on ", D score, " vertically ", " level ", " top ", " end ", " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, only the utility model and simplified characterization for convenience of description, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore the restriction to the utility model protection domain can not be interpreted as.
As shown in Figure 1, the structural representation of the embodiment cooperatively interacted for the utility model locking nut and locking nut and gear shaft, gear.Gear 3 is fixedly mounted on gear shaft 2 by cover tooth or spline, the front end of gear shaft 2 is provided with thread segment 5, the inner surface of locking nut 1 is provided with screw thread, locking nut 1 is set on gear shaft 2, and cooperatively interacted by the thread segment 5 on the screw thread of inner surface and gear shaft 2, axial locking is carried out to gear 3.
As shown in Figure 3, be the cut-away illustration with a back off tool embodiment of tightening of the utility model locking nut.Tightening of this locking nut comprises torque axis 18 and support 15 with back off tool, described support 15 is connected with described gear 3, and fix relative to described gear 3 and described gear shaft 2, with prevent described gear shaft 2 and described gear 3 described locking nut 1 tighten with release process in rotate, described support 15 has hollow cavity, described torque axis 18 is arranged in the hollow cavity of described support 15, and can relative to the inner surface movement of described support 15, the first end of described torque axis 18 engages mutually with described locking nut 1, realize tightening of described locking nut 1 with the moment of the second end by putting on described torque axis 18 and unclamp.
In above-described embodiment, tightening of locking nut comprises torque axis and support with back off tool, support is connected with gear, and support is fixed relative to gear and gear shaft, can effectively prevent like this gear and gear shaft locking nut tighten with release process in rotate, avoid causing locking nut cannot to tighten smoothly and unclamp because gear and gear shaft rotate, the assembling of aero-engine and the efficiency of decomposition can be improved, more meet the assembling of aero-engine and the requirement of decomposition; In addition, by arranging torque axis, the moment putting on locking nut can be transferred to the end of torque axis by locking nut itself, the comparatively narrow problem of being inconvenient to exert a force in space of locking nut installation site can be overcome like this.
The specific constructive form of above-described embodiment medium-height trestle 15 can have multiple different selection, as long as support 15 can be made can to fix relative to gear 3 and gear shaft 2, and play and prevent gear 3 tightening and the effect of rotating in release process at locking nut 1.
As shown in Figure 2, support 15 is tubular construction, and the hollow cavity of support 15 is preferably set to cylindrical, to facilitate torque axis 18 to rotate within it, and is easy to manufacture.The profile of support 15 can be cylindrical, also can be square or other shapes.In Fig. 2 embodiment, the outer surface of support 15 is provided with four legs, four legs are provided with through hole, support 15 is fixedly mounted on fixture by multiple first bolt 16, fixture can be fixed any structure, such as in aero-engine, support 15 can be fixed on stator part, to make gear 3 and gear shaft 2 maintain static relative to stator part in the process of tightening or unclamp locking nut 1, avoid the rotation of gear 3 and gear shaft 2 on the impact of tightening or unclamping locking nut 1 process.
In order to realize the connection of support 15 and gear 3, can direct circumferentially multiple extension pawl 11 in the end of support 15, be connected with gear 3 by extension pawl 11; Also the Brake Block 12 with hollow cavity can be set between support 15 and extension pawl 11, described torque axis 18 can pass the hollow cavity of described support 15 and the hollow cavity of described Brake Block 12, circumferentially there is multiple extension pawl 11 one end of described Brake Block 12, as shown in Figure 1, described gear 3 is circumferentially provided with multiple locking groove 4, preferably, locking groove 4 is slotted hole, hang pawl 11 and there is hook portion, described extension pawl 11 can be inserted in described locking groove 4, is fixedly connected with by described Brake Block 12 to make described support 15 with described extension pawl 11 with described gear.
Wherein, be fixedly connected with between support 15 with Brake Block 12, its specific implementation can have to be selected comparatively flexibly, such as can with bolts or pin joint etc.In a preferred embodiment, described support 15 is set on described Brake Block 12, and is connected by spline fitted.Particularly, the inner surface of support 15 is provided with spline, and the outer surface of Brake Block 12 is provided with spline, and support 15 is set in the outside of Brake Block 12, to be realized the connection of support 15 and Brake Block 12 by spline fitted.In addition, adopt spline to carry out being connected a benefit in addition between support 15 and Brake Block 12, the axial location between support 15 and Brake Block 12 can be finely tuned exactly, can increase or shorten the entire length of instrument according to actual needs.
In addition, Brake Block 12 also can select bolt to be connected with the connected mode of hanging between pawl 11 or pin joint etc.In a preferred embodiment, described Brake Block 12 is connected by screw 13 with described extension pawl 11.Before locking nut 1 being tightened and unclamps, first screw 13 can be unclamped, the head hanging pawl 11 is hooked in the locking groove 4 of gear 3 rear portion setting, and then screw 13 is tightened, to realize the connection of support 15 and gear 3.
Because support 15 is set on Brake Block 12, the diameter of the hollow cavity of support 15 is greater than the diameter of the hollow cavity of Brake Block 12, therefore, when torque axis 18 is located in the passage formed by the hollow cavity of the hollow cavity of support 15 and Brake Block 12, between the inner surface of torque axis 18 and support 15, there is certain space.Due to the existence in this space, in the release process of locking nut 1, when torque axis 18 is retracted into the inner surface departing from Brake Block 12, the axis of torque axis 18 may be departed from, and locking nut 1 can be made cannot to align with the screw thread on gear shaft 2.
In order to solve the problem, in a preferred embodiment, threaded collar 17 is provided with between the second end of described torque axis 18 and described support 15, described threaded collar 17 is for having the tubular construction of hollow cavity, described threaded collar 17 is set on the outer surface of described torque axis 18, the outer surface of described threaded collar 17 and the inner surface of described support 15 bonded to each other, and can slide relative to described support 15, and the inner surface of the outer surface of described torque axis 18 and described Brake Block 12 can be made bonded to each other.Like this, threaded collar 17 locking nut 1 tighten with release process in can play the effect aligning and feel relieved, the axis of bootable torque axis 18 does not depart from.
In addition, the back segment bonded to each other at threaded collar 17 and support 15 can arrange space, for injecting lubricating oil, threaded collar 17 can more successfully be slided relative to the inner surface of support 15.Connected mode between threaded collar 17 with torque axis 18 can for welding or being spirally connected, preferably, the inner surface of threaded collar 17 is provided with screw thread, the outer surface of torque axis 18 is provided with screw thread, therebetween be fixedly connected with by screw thread, can realize torque axis 18 like this drives threaded collar 17 to slide along the inner surface of support 15, and torque axis 18 slides along the inner surface of Brake Block 12 near the part of first end.
Tighten with release process at locking nut 1, threaded collar 17 is rotated with torque axis 18, and when torque axis 18 does not rotate, threaded collar 17 can be fixed on support 15.Particularly, in a preferred embodiment, described support 15 is provided with the first baffle plate 27 near the side of described threaded collar 17, when torque axis 18 quits work, described threaded collar 17 can be fixedly connected on described first baffle plate 27 by the 3rd bolt 22, comes off in the moving process of whole instrument to prevent threaded collar 17 from torque axis 18.
As shown in Figure 1, one end of described locking nut 1 is circumferentially provided with spaced apart torsional channel 7, forms protruding 9 between adjacent described torsional channel 7, and this torsional channel 7 and protruding 9 all extends along the axis of locking nut 1; As shown in Figure 4, the first end of described torque axis 18 is circumferentially provided with spaced apart torsion pass tooth 24, groove 25 is formed between adjacent torsion pass tooth 24, this torsion pass tooth 24 and groove 25 all extend along the axis of torque axis 18, described torsional channel 7 cooperatively interacts with described torsion pass tooth 24, mutually engages with described locking nut 1 to make described torque axis 18.Certainly, for locking nut 1 as shown in Figure 1, the end of torque axis 18 can arrange the torsion pass tooth 24 coordinated with its torsional channel 7, realize the engaging between torque axis 18 with locking nut 1, for other forms of locking nut 1, the end of torque axis 18 also can arrange other structures, to lock nut 1, realizes the connection of torque axis 18 and locking nut 1.
In order to prevent torque axis 18 tightening or play vertically in release process at locking nut 1, as shown in Figure 4, axial limiting tooth 26 can also be provided with in the side of described torsion pass tooth 24, this side refers to the side along torsion pass tooth 24 circumference, axial limiting tooth 26 is the tooth protruding above-mentioned side, as shown in Figure 1, the described inner surface of protruding 9 is provided with axial restraint groove 8, the inner surface of this projection 9 refers to the surface of the protruding axis near locking nut 1, described axial limiting tooth 26 can insert in described axial restraint groove 8, to connect described torque axis 18 and described locking nut 1, and can prevent described torque axis 18 from throwing off.Axial limiting tooth 26 is fastened in axial restraint groove 8, can prevent from moving vertically with locking nut in release process 1 tightening, and namely prevents torque axis 18 from throwing off from locking nut 1 in rotation process.
As shown in Figure 1, the end of described gear shaft 2 is provided with locking elastic ring 6, for preventing, described locking nut 1 is lower in working order to be loosened, and this duty refers to after locking nut 1 tightens, the duty that locking nut 1 and gear 3, gear shaft 2 entirety are in.The state of this locking elastic ring 6 for sticking up before locking nut 1 is tightened, in order to prevent locking nut 1 tighten put in place before just by locking elastic ring 6 locking, in a preferred embodiment, the first end of described torque axis 18 is provided with end tooth pressure ring 19, for backing down and compressing described locking elastic ring 6, to ensure that locking nut 6 can be seated.End tooth pressure ring 19 can be fixedly connected on the first end of torque axis 18, is such as spirally connected, welds or pin joint etc., also can be integrally manufactured with torque axis 18.Preferably, end tooth pressure ring 19 and torque axis 18 are welded to connect, and are easy to realize.
Carry out feeling relieved and aligning to help locking nut 1 further, tightening of the utility model locking nut can also comprise guiding device 14 with back off tool, described torque axis 18 has hollow cavity, described guiding device 14 is arranged in the hollow cavity of described torque axis 18, and ensure the axis of described guiding device 14 and the dead in line of described torque axis 18, to guide described torque axis 18 and to realize aligning of described locking nut 1 and screw thread on described gear shaft 2.This guiding device 14, can before tightening, and first guide torque axis 18 locking nut 1 to be correctly set in the unswerving situation in axis the thread segment of gear shaft 2, the damage can avoiding screw thread is not departed from axis; Then, in rundown process, also can ensure that locking nut 1 does not carry out coordinating tightening with screw thread with not departing from; In release process, the screw thread damage that also can prevent from axis from departing from causing.
The structure of concrete guiding device 14 can have to be selected comparatively flexibly, in a preferred embodiment, described guiding device 14 comprises the axle 141 and seeker 142 that are fixedly connected with, described axle 141 is installed on the inner surface of described gear shaft 2 by described seeker 142, the outer surface of described seeker 142 and the inner surface of described gear shaft 2 bonded to each other, to guide described locking nut 1 and to align.The effect of this seeker 142 is, axle 141 can be made to do comparatively thin, thus alleviate the weight of whole frock tool, as long as can fit with the inner surface of gear shaft 2 in the end of seeker 142.
In embodiment as shown in Figure 3, seeker 142 is stair-stepping cylindrical structure form, certainly this is a kind of preferred constructive form of seeker, do not form limitation ot it, the specific constructive form of seeker 142 can have multiple choices, 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 is pyramidal structure form.
In addition, axle 141 can also be made hollow, or axle 141 outer surface digs cavity, to alleviate overall weight further.
In addition, torque axis 18, end tooth pressure ring 19, Brake Block 12 and support 15 all can dig cavity, to alleviate the overall weight of instrument.
In order to reduce artificial participation, save manpower, in a preferred embodiment, as shown in Figure 5, the second end outer surface of described torque axis 18 is provided with spline head 20, spline head 20 can be fixedly connected on the second end of torque axis 18 by the second bolt 21, described spline head 20 is for mounting torque multiplier 23, and this torque multiplier 23 can be arranged on the second baffle 28 that is fixedly connected with the first baffle plate 27 on support 15.What adopt torque multiplier can realize high-torque tightens requirement, and its Interface Expanding is good, can with pneumatic impact spanner with the use of, be convenient to realize tightening of high-torque, improve the efficiency in operating process.
Below in conjunction with accompanying drawing 1 ~ 5, tightening of the utility model locking nut is described in detail with the assembly relation of back off tool embodiment and the course of work:
See Fig. 1, gear 3 is arranged on gear shaft 2 by cover tooth, and locking nut 1 is arranged on gear shaft 2 for axial lock fixed gear 3 by screw thread.Gear 3 is provided with locking groove 4, and for fixed stop, the front end of locking nut 1 is provided with torsional channel 7 with axial restraint groove 8 for applying moment, coordinates locking between locking nut 1 with gear shaft 2 with locking elastic ring 6.
As shown in Figure 2-5, Brake Block 12, preferably columnar structured, outer surface has spline to concrete each part fits relation, and front end is connected with extension pawl 11 by screw 13, hangs pawl 11 and is buckled in the locking groove 4 on gear 3.Hang pawl 11 to be connected by screw 13 with columnar Brake Block 12.Support 15 outside is provided with four legs, and inner surface has spline, is fixed with outer stator part by the first bolt 16, and inside is arranged on the spline of Brake Block 12 outside by cover tooth, is connected by gear 3, prevents the rotation in operating process with external structure.Threaded collar 17 is tightened in the outside of torque axis 18 by internal thread, and torque axis 18 through Brake Block 12 and support 15, and can slide at inner surface.Torque axis 18, tubular structure, dismountable, the front end of torque axis 18 is provided with torsion pass tooth 24, complementary with the torsional channel 7 of locking nut 1, and for applying moment, axial limiting tooth 26 locks torque axis 18, see Fig. 4 for axial.After the front end of torque axis 18 contacts with locking nut 1, the columnar end tooth pressure ring 19 being preferably welded on the front portion of torque axis 18 can back down locking elastic ring 6.The spline head 20 of torque axis 18 rear end is by the spline toe joint torque multiplier 23 and pneumatic impact spanner etc. of outer surface.Guiding device 14, be preferably major axis shape, be installed on the inner surface of gear shaft 2 by seeker 142, coordinate with the cylindrical conduit of torque axis 18 inside, can be free to slide at pipe interior, facilitate aligning and centering in operating process and guiding before thread contact, prevent the thread damage in operating process.
The concrete course of work is: become to be integrated after whole instrument installation, first unscrewed by screw 13, is buckled on the locking groove 4 at gear 3 rear portion by extension pawl 11, then tightens screw 13; By the first bolt 16, support 15 is fixedly connected with stator part again, so namely achieves the fixing of support 15, gear 3 and gear shaft 2; Locking nut 1 is fastened on the first end of torque axis 18, torsional channel 7 on locking nut 1 is engaged mutually with the torsion pass tooth 24 of torque axis 18 first end, and axial restraint groove axial limiting tooth 26 inserted in the projection 9 of locking nut 1, to carry out axial location to torque axis 18; Then the seeker 142 of guiding device 14 is leaned the inner surface at gear shaft 2, rotation torque axle 18, utilize guiding device 14 to guide and align simultaneously, locking nut 1 is enclosed within the thread segment of gear shaft 2, continue rotation torque axle 18, utilize end tooth pressure ring 19 to be backed down by locking elastic ring 6, continue rotation torque axle 18, locking nut 1 is tightened.In the rotation process of torque axis 18, torque multiplier 23 can be assembled on spline head 20, coordinate with pneumatic impact spanner and moment is applied to torque axis 18.
When needs unclamp locking nut 1, reversely rotate torque axis 18, utilize guiding device 14 to guide, when preventing torque axis 18 from returning, axis runout causes screw thread to damage simultaneously.When torque axis 18 drives locking nut 1 to depart from thread segment 5 completely, dismantlement work is complete.
In the utility model embodiment, force application part and brake component are all in the front end of locking nut 1, and more traditional split type instrument is more integrated and stable.The cylindrical conduit of prosenchymatous guiding device 14 and torque axis 18 inside coordinates guiding, centering in addition, and more traditional instrumental function is optimized more, and it is more convenient to operate, and operating process is not easy part of damage more.
By the explanation with multiple embodiments of back off tool of tightening to the utility model locking nut, can see that tightening of the utility model locking nut at least has one or more advantages following with back off tool embodiment:
1, reversion stop measure: support is fixed, prevents the rotation of gear and gear shaft in rundown process, add the accuracy and efficiency that moment applies.Support, as frock stator part, in being included in by the frock tumblers such as torque axis, decreases the possibility that tumbler is caused danger.
2, guide, align, feel relieved: in operating process, have guiding device to guide, can conveniently align, also can prevent from manually tightening in release process the situation that screw thread damage occurs due to axis runout.
3, meeting high-torque and tighten requirement: when needs realize tightening of high-torque in operating process, realizing by increasing torque multiplier.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that: still can modify to detailed description of the invention of the present utility model or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope of the utility model request protection.
Claims (12)
1. the tightening and back off tool an of locking nut, for tightening and unclamping the locking nut (1) being set in the upper also axial lock fixed gear (3) of gear shaft (2), it is characterized in that, comprise torque axis (18) and support (15), described support (15) is connected with described gear (3), and fix relative to described gear (3) and described gear shaft (2), with prevent described gear shaft (2) and described gear (3) described locking nut (1) tighten with release process in rotate, described support (15) has hollow cavity, described torque axis (18) is arranged in the hollow cavity of described support (15), and can relative to the inner surface movement of described support (15), the first end of described torque axis (18) engages mutually with described locking nut (1), realize tightening of described locking nut (1) with the moment of the second end by putting on described torque axis (18) and unclamp.
2. the tightening and back off tool of locking nut according to claim 1, it is characterized in that, also comprise the Brake Block (12) with hollow cavity, described torque axis (18) can pass the hollow cavity of described support (15) and the hollow cavity of described Brake Block (12), circumferentially there is multiple extension pawl (11) one end of described Brake Block (12), described gear (3) is circumferentially provided with multiple locking groove (4), described extension pawl (11) can be inserted in described locking groove (4), be fixedly connected with described gear with described extension pawl (11) by described Brake Block (12) to make described support (15).
3. the tightening and back off tool of locking nut according to claim 2, it is characterized in that, described support (15) is set on described Brake Block (12), and is connected by spline fitted.
4. the tightening and back off tool of locking nut according to claim 2, it is characterized in that, described Brake Block (12) is connected by screw (13) with described extension pawl (11).
5. the tightening and back off tool of locking nut according to claim 2, it is characterized in that, threaded collar (17) is provided with between the second end of described torque axis (18) and described support (15), described threaded collar (17) is for having the tubular construction of hollow cavity, described threaded collar (17) is set on the outer surface of described torque axis (18), the outer surface of described threaded collar (17) and the inner surface of described support (15) bonded to each other, and can slide relative to described support (15), and the inner surface of the outer surface of described torque axis (18) and described Brake Block (12) can be made bonded to each other.
6. the tightening and back off tool of locking nut according to claim 5, it is characterized in that, described support (15) is provided with the first baffle plate (27) near the side of described threaded collar (17), and described threaded collar (17) can be fixedly connected on described first baffle plate (27) by the 3rd bolt (22).
7. the tightening and back off tool of locking nut according to claim 1, it is characterized in that, one end of described locking nut (1) is circumferentially provided with spaced apart torsional channel (7), formed protruding (9) between adjacent described torsional channel (7), the first end of described torque axis (18) is circumferentially provided with spaced apart torsion pass tooth (24), described torsional channel (7) and described torsion pass tooth (24) cooperatively interact, and mutually engage with described locking nut (1) to make described torque axis (18).
8. the tightening and back off tool of locking nut according to claim 7, it is characterized in that, the side of described torsion pass tooth (24) is provided with axial limiting tooth (26), the inner surface of described projection (9) is provided with axial restraint groove (8), described axial limiting tooth (26) can be inserted in described axial restraint groove (8), to connect described torque axis (18) and described locking nut (1), and can prevent described torque axis (18) from throwing off.
9. the tightening and back off tool of locking nut according to claim 7, it is characterized in that, the end of described gear shaft (2) is provided with locking elastic ring (6), loosen for preventing described locking nut (1), the first end of described torque axis (18) is provided with end tooth pressure ring (19), for backing down and compressing described locking elastic ring (6).
10. the tightening and back off tool of locking nut according to claim 1, it is characterized in that, also comprise guiding device (14), described torque axis (18) has hollow cavity, described guiding device (14) is arranged in the hollow cavity of described torque axis (18), and ensure the axis of described guiding device (14) and the dead in line of described torque axis (18), go up aligning of screw thread to guide described torque axis (18) and to realize described locking nut (1) with described gear shaft (2).
Tightening and back off tool of 11. locking nuts according to claim 10, it is characterized in that, described guiding device (14) comprises the axle (141) and seeker (142) that are fixedly connected with, described axle (141) is installed on the inner surface of described gear shaft (2) by described seeker (142), the outer surface of described seeker (142) and the inner surface of described gear shaft (2) bonded to each other, to guide described locking nut (1) and to align.
Tightening and back off tool of 12. locking nuts according to claim 1, it is characterized in that, the second end outer surface of described torque axis (18) is provided with spline head (20), and described spline head (20) is for mounting torque multiplier (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520723284.7U CN204997619U (en) | 2015-09-18 | 2015-09-18 | Lock nut screws up and loosens instrument |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520723284.7U CN204997619U (en) | 2015-09-18 | 2015-09-18 | Lock nut screws up and loosens instrument |
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| Publication Number | Publication Date |
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| CN204997619U true CN204997619U (en) | 2016-01-27 |
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| CN201520723284.7U Withdrawn - After Issue CN204997619U (en) | 2015-09-18 | 2015-09-18 | Lock nut screws up and loosens instrument |
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| CN (1) | CN204997619U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105952742A (en) * | 2016-05-16 | 2016-09-21 | 同济大学 | Mounting adapter for split nested unilateral bolt fastener |
| CN106541363A (en) * | 2015-09-18 | 2017-03-29 | 中航商用航空发动机有限责任公司 | Locking nut is tightened and back off tool |
| CN107363522A (en) * | 2017-09-07 | 2017-11-21 | 广西玉柴机器股份有限公司 | The device for screwing up and tightening method of a kind of hydraulic pump gear |
| CN108145654A (en) * | 2017-12-18 | 2018-06-12 | 梅庆波 | A kind of rod nut tightening device |
| CN110640446A (en) * | 2018-06-27 | 2020-01-03 | 中国航发商用航空发动机有限责任公司 | Device and method for screwing back shaft nut of high-pressure turbine of aircraft engine |
| CN111989189A (en) * | 2018-04-18 | 2020-11-24 | 阿特拉斯·科普柯工业技术公司 | Hand-held electric pulse tool and method for tightening operation |
| CN113386087A (en) * | 2021-07-06 | 2021-09-14 | 中科航星科技有限公司 | Nut dismouting frock before space engine fan |
-
2015
- 2015-09-18 CN CN201520723284.7U patent/CN204997619U/en not_active Withdrawn - After Issue
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106541363A (en) * | 2015-09-18 | 2017-03-29 | 中航商用航空发动机有限责任公司 | Locking nut is tightened and back off tool |
| CN106541363B (en) * | 2015-09-18 | 2018-07-10 | 中国航发商用航空发动机有限责任公司 | Locking nut tighten and back off tool |
| CN105952742A (en) * | 2016-05-16 | 2016-09-21 | 同济大学 | Mounting adapter for split nested unilateral bolt fastener |
| CN105952742B (en) * | 2016-05-16 | 2017-12-26 | 同济大学 | A kind of split Nested-type single-side bolt fastener installs adapter |
| CN107363522A (en) * | 2017-09-07 | 2017-11-21 | 广西玉柴机器股份有限公司 | The device for screwing up and tightening method of a kind of hydraulic pump gear |
| CN108145654A (en) * | 2017-12-18 | 2018-06-12 | 梅庆波 | A kind of rod nut tightening device |
| CN108145654B (en) * | 2017-12-18 | 2019-07-02 | 上海匹阔机械配件有限公司 | A kind of rod nut tightening device |
| CN111989189A (en) * | 2018-04-18 | 2020-11-24 | 阿特拉斯·科普柯工业技术公司 | Hand-held electric pulse tool and method for tightening operation |
| CN111989189B (en) * | 2018-04-18 | 2022-04-29 | 阿特拉斯·科普柯工业技术公司 | Hand-held electric pulse tool and method for tightening operation |
| CN110640446A (en) * | 2018-06-27 | 2020-01-03 | 中国航发商用航空发动机有限责任公司 | Device and method for screwing back shaft nut of high-pressure turbine of aircraft engine |
| CN113386087A (en) * | 2021-07-06 | 2021-09-14 | 中科航星科技有限公司 | Nut dismouting frock before space engine fan |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 200241 Minhang District Lianhua Road, Shanghai, No. 3998 Patentee after: China Hangfa commercial aviation engine limited liability company Address before: 200241 Minhang District Lianhua Road, Shanghai, No. 3998 Patentee before: AVIC Commercial Aircraft Engine Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160127 Effective date of abandoning: 20180710 |
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| AV01 | Patent right actively abandoned |