CN105522537A - Nut placing and tightening device, method and system - Google Patents
Nut placing and tightening device, method and system Download PDFInfo
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- CN105522537A CN105522537A CN201410512757.9A CN201410512757A CN105522537A CN 105522537 A CN105522537 A CN 105522537A CN 201410512757 A CN201410512757 A CN 201410512757A CN 105522537 A CN105522537 A CN 105522537A
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Abstract
The invention relates to a nut placing and tightening device, method and system. The nut placing and tightening device comprises a connecting rod mechanism for transferring torque, a stretching mechanism and a gear mechanism for clamping a nut. The gear mechanism is hinged to one end of the connecting rod mechanism, the stretching mechanism is connected with the connecting rod mechanism and the gear mechanism, and the gear mechanism can be unfolded or folded relative to the connecting rod mechanism through the stretching mechanism. The connecting rod mechanism comprises a connecting rod which can be rigidly connected with or disconnected from the gear mechanism. In the state that the connecting rod is disconnected from the gear mechanism, the gear mechanism can be unfolded or folded relative to the connecting rod mechanism through the stretching mechanism. In the state that the gear mechanism is folded in place relative to the connecting rod mechanism, the connecting rod can be rigidly connected with the gear mechanism. Through the nut placing and tightening device, method and system, the nut can be tightened and dismounted in a narrow and long cavity in a steering mode; besides, length adjustment can be conducted according to needs, and thus the effective operation distance is extended.
Description
Technical field
The present invention relates to aero-engine field, particularly relate to a kind of nut that can be applicable to the connection of large aerospace engine high pressure combined rotor and lay device for screwing up, method and system.
Background technology
The core engine of turbofan aero-engine is made up of high-pressure compressor parts, combustion chamber components and high-pressure turbine parts.Wherein, high-pressure compressor rotor (HPCR, Highpressurecompressorrotor) and High Pressure Turbine Rotor (HPTR, Highpressureturbinerotor) form high pressure combined rotor, and both are bolt connection.Core engine assembly quality is determined by two high pressure rotor quality of connection to a great extent.Air Fitter process according to routine: first use special hanger and crane by above HPTR lifting extremely vertical fixing HPCR, complete vertical butt joint.Then, under the plumbness of high pressure combined rotor, arm stretches into the rear shaft neck of High Pressure Turbine Rotor, manually installs attaching nut; Re-use specific purpose tool to be stretched into by HPTR rear shaft neck, according to a definite sequence, all nuts are tightened and limiter, make it reach torque requirement, finally complete the assembling of high pressure combined rotor.Due to the Core Feature effect of high pressure combined rotor in aero-engine, assembly quality between HPCR and HPTR not only determines form and position tolerance and the dynamic equilibrium state of high pressure combined rotor itself, is directly connected to indicators of overall performance and the complete machine oscillation level of aero-engine especially.So above-mentioned assembly work is put into the critical process of Core Engine assembling.
Because the attaching nut of high pressure combined rotor is positioned at mounting edge before HPTR, arm stretches into distance and is larger than the installation that HPTR length just can realize this nut, and therefore, the accessibility of installing operation is extremely important.After nut installation, use and stretch into " C " shape special spanner of distance slightly larger than HPTR length, complete tightening and limiter of nut.Version, the method for operating comparative maturity of " C " shape special spanner, design focal point ensures enough overall stiffness.
For large aerospace engine, be generally two-stage high-pressure turbine, HPTR size is relatively large.Tightening of high pressure combined rotor attaching nut can continue to use " C " shape special spanner with limiter.But the craft of this nut is installed very difficult---the HPTR length of large aerospace engine reaches more than 650mm, and the HPTR length of traditional Small Aeroengine is less than 500mm.Adult's arm overall length (oxter is to finger tip ultimate range) is general at about 650mm, and valid function distance is about 550mm.Thus, the installation for large aerospace engine mesohigh combined rotor attaching nut operates, and accessibility can not meet.
There is the large scale GE90 Engine Series of twin-stage high-pressure turbine, have employed complicated special tooling system, coordinate industrial endoscope, achieve the installation of nut, tighten and limiter three functions.This fixture system mainly comprises the front end operating mechanism of HPTR outside, the multi-jointed gear unit of HPTR inside, and the folding end effector of HPTR inside.End effector realizes clamping and the rotation of nut, front end operating mechanism mainly comprises the device such as control crank, knob, the hardware interface of hand control and torque spanner is provided, the whole geometry adjustment structures completed in fixture system by multi-jointed gear unit are controlled, as the opening of end effector, axial and circumferential location.
Because this fixture system mechanism is very complicated, containing a considerable amount of gear and connecting rod, so physical dimension is comparatively large, overall stiffness is lower, and the lever amplification effect that cantilevered overall configuration produces makes terminal positioning low precision.Owing to there is multistage transmission mechanism between front end manipulation device and end effector, fixture system cannot realize effective various dimensions power sensing and force feedback, and to slight colliding with, clamping stagnation is insensitive, can cause crooked, locked or get loose when nut is installed.Thus, operating efficiency is lower; In addition, cost is high, poor stability.Consider the high rotary speed working trend of High Performance Aeroengine, the internal diameter of high pressure combined rotor needs progressively to reduce, and present engine HPTR internal diameter is generally between 150mm ~ 200mm, and alternate-engine can be reduced to below 130mm.Therefore, above-mentioned complex tool equipment system, on the basis of satisfied operation accessibility, also requires further improvement structure, reduces contour dimension, and then meets the aero-engine assembling needs of following high rotating speed, little internal diameter rotor.
Summary of the invention
The object of the invention is to propose a kind of nut and lay device for screwing up, method and system, structure is simple, can extend operating distance, realize turning in long and narrow cavity tightening or decomposing nut.
For achieving the above object, the invention provides a kind of nut and lay device for screwing up, it comprises for the linkage of carry-over moment, drawing mechanism and the gear mechanism for binding nut, described gear mechanism is hinged on one end of described linkage, described drawing mechanism is connected with described linkage and described gear mechanism, described gear mechanism can be made relative to described linkage expansion or folding by described drawing mechanism; Described linkage comprises connecting rod, described connecting rod and described gear mechanism can realize being rigidly connected and throwing off, under the state that described connecting rod and described gear mechanism are thrown off, make described gear mechanism relative to described linkage expansion or folding by described drawing mechanism, under folding at described gear mechanism the state put in place relative to described linkage, described connecting rod can realize and being rigidly connected of described gear mechanism.
One preferably or in embodiment, described linkage also comprises the first sleeve and the second sleeve, described connecting rod is arranged in described first sleeve, described first sleeve is arranged in described second sleeve, described gear mechanism and described second sleeve hinged, described drawing mechanism and described first sleeve connection, described first sleeve moves up and down, and described gear mechanism can be driven relative to described linkage expansion or folding by described drawing mechanism.
One preferably or in embodiment, described second sleeve is fixedly installed supporting disk away from one end of described gear mechanism, the end that described first sleeve passes described second sleeve has been threaded connection revolving part, described revolving part is positioned by described supporting disk, and can rotate relative to described supporting disk, rotate described revolving part, be threaded connection, described first sleeve can be driven to move up and down.
One preferably or in embodiment, described nut is laid device for screwing up and is also comprised indexing mechanism, described linkage is through described indexing mechanism, described indexing mechanism comprises rolling disc and index dial, described index dial has the parts of long and narrow cavity for being fixed on, described index dial is provided with several locating hole, in described locating hole and described parts, needs position, the hole one_to_one corresponding of fastening nut; Described rolling disc is fixedly connected with described supporting disk by column, described rolling disc is provided with pin hole, described turn disc, described pin hole can be made to overlap with the arbitrary described locating hole on described index dial, and under the state overlapped with described locating hole at described pin hole, plug bearing pin, setscrew nut riding position.
One preferably or in embodiment, described gear mechanism comprises gear carrier, described gear carrier is provided with trench structure, the end of described connecting rod is provided with the plug construction matched with described trench structure, by the cooperation of described trench structure and described plug construction, can realize being rigidly connected of described connecting rod and described gear mechanism, and described connecting rod can drive described trench structure to rotate.
One preferably or in embodiment, described gear carrier is also provided with driving gear, travelling gear and plum blossom gear, described driving gear is arranged on the periphery of described trench structure, described driving gear can by the transmission of travelling gear described at least one, drive described plum blossom pinion rotation, described plum blossom gear is used for binding nut.
One preferably or in embodiment, described plum blossom gear is provided with the groove for placing nut, described groove circumference is provided with at least one spring cavity, is provided with spring in described spring cavity, the inner of described spring cavity is provided with steel ball, and the outer end of described spring cavity is provided with plug screw.
One preferably or in embodiment, described drawing mechanism comprises stretching bar, and one end and described first sleeve of described stretching bar are hinged, and the other end and the described gear mechanism of described stretching bar are hinged.
One preferably or in embodiment, described connecting rod is fixedly installed first handle away from one end of described gear mechanism, can drive described link rotatable, to described gear mechanism transmitting torque by rotating described first handle; And described connecting rod upwards can be extracted or advance downwards by described first handle, realize with the disengagement of described gear mechanism or be rigidly connected.
Preferably or in embodiment one, described revolving part is provided with second handle, described revolving part can be driven to rotate by described second handle.
One preferably or in embodiment, described nut is laid device for screwing up and also comprised cylindrical shell, and described cylindrical shell is located at outside described linkage, drawing mechanism, and the inwall for the protection of the parts with long and narrow cavity is not scratched.
For achieving the above object, present invention also offers a kind of nut laying device for screwing up based on above-mentioned nut and lay tightening method, it comprises the following steps:
S1) connecting rod and gear mechanism are thrown off, by drawing mechanism, gear mechanism is launched relative to linkage, and by gear mechanism binding nut;
S2) linkage, gear mechanism and drawing mechanism are stretched in the parts with long and narrow cavity;
S3) made by drawing mechanism that gear mechanism is folding relative to linkage to put in place, then connecting rod and gear mechanism are rigidly connected;
S4) by gear mechanism, nut is placed in parts the position needing fastening nut, pivot link, driven wheel mechanism fastening nut.
One preferably or in embodiment, in step S1) front, also determine the riding position of first nut in parts by indexing mechanism.
One preferably or in embodiment, in step S4) after, connecting rod and gear mechanism are thrown off, under the state that gear mechanism launches relative to linkage, upwards hoisting nut lays device for screwing up, again fill a nut, the rolling disc in indexing mechanism forwards next position, hole to and locks, and repeats nut and lays, tightens action.
For achieving the above object, present invention also offers a kind of nut and lay tightening system, it nut comprised in industrial endoscope and above-mentioned any embodiment lays device for screwing up.
Based on technique scheme, the present invention at least has following beneficial effect:
The present invention can make gear mechanism relative to linkage expansion or folding by drawing mechanism, under deployed condition, linkage, drawing mechanism and gear mechanism be put under being convenient to there is long and narrow cavity parts in, under folded state, be convenient to lay, fastening nut, the length of linkage can regulate as required, extends valid function distance, achieves and turns to the object of tightening, decomposing nut at long and narrow cavity.
Accompanying drawing explanation
Accompanying drawing described herein is used to provide a further understanding of the present invention, and form a application's part, schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the structural representation that nut provided by the invention lays device for screwing up;
Fig. 2 is the cross-sectional schematic that nut provided by the invention lays device for screwing up;
Fig. 3 is the schematic diagram that nut provided by the invention lays device for screwing up middle gear mechanism;
Fig. 4 is the plum blossom gear cross-sectional schematic that nut provided by the invention lays in device for screwing up.
In accompanying drawing:
1-linkage; 11-connecting rod; 12-first sleeve; 13-second sleeve; 14-first handle; 15-second handle; 16-revolving part;
2-indexing mechanism; 21-index dial; 22-rolling disc;
3-drawing mechanism; 31-stretching bar;
4-gear mechanism; 41-driving gear; 42-travelling gear; 43-plum blossom gear; 44-groove; 45-spring; 46-steel ball; 47-plug screw; 48-six square groove;
5-supporting disk; 6-column; 7-cylindrical shell.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in embodiment is clearly and completely described.Obviously, described embodiment is only a part of embodiment of the present invention, instead of whole embodiments.Based on embodiments of the invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In describing the invention, it will be appreciated that, term " " center ", " longitudinal direction ", " transverse direction ", " front ", " afterwards ", " left side ", " right side ", " 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 present invention for convenience of description and simplified characterization, instead of indicate or imply that the device of indication or element must have specific orientation, with specific azimuth configuration and operation, therefore limiting the scope of the invention can not be interpreted as.
As shown in Figure 1 and Figure 2, for nut provided by the invention lays the illustrative examples of device for screwing up, in this illustrative examples, nut is laid device for screwing up and is comprised for the linkage 1 of carry-over moment, drawing mechanism 3 and the gear mechanism 4 for binding nut, gear mechanism 4 is hinged on one end of linkage 1, drawing mechanism 3 is connected with linkage 1 and gear mechanism 4, gear mechanism 4 can be made to launch relative to linkage 1 or folding by drawing mechanism 3; Linkage 1 comprises connecting rod 11, connecting rod 11 and gear mechanism 4 can realize being rigidly connected and throwing off, under the state that connecting rod 11 and gear mechanism 4 are thrown off, by drawing mechanism 3, gear mechanism 4 is launched relative to linkage 1 or folding, at gear mechanism 4 relative under the folding state put in place of linkage 1, connecting rod 11 can realize and being rigidly connected of gear mechanism 4.
Linkage 1 and gear mechanism 4 are set to folding structure by the present invention, at gear mechanism 4 relative to (close to 180 °) under linkage 1 deployed condition, by linkage 1, gear mechanism 4 and drawing mechanism 3 put in be had in the parts of long narrow lumens, arrive high pressure rotor junction, under gear mechanism 4 folds retracted state relative to linkage 1 (close to 90 °), nut is laid by gear mechanism 4, fastening nut is to requiring moment, operation is tightened in the installation realizing large aerospace engine mesohigh combined rotor attaching nut, and the length of linkage 1 can regulate as required, extend valid function distance, achieve the object turning to fastening nut in long and narrow cavity.
As shown in Figure 2, lay in the illustrative examples of device for screwing up at nut provided by the invention, linkage 1 can also comprise the first sleeve 12 and the second sleeve 13, connecting rod 11 is arranged in the first sleeve 12, connecting rod 11 and the first sleeve 12 are arranged in the second sleeve 13, gear mechanism 4 and the second sleeve 13 hinged, drawing mechanism 3 is connected with the first sleeve 12, first sleeve 12 moves up and down, and can be launched or folding by drawing mechanism 3 driven gear mechanism 4 relative to linkage 1.
As shown in Figure 1, lay in the illustrative examples of device for screwing up at nut provided by the invention, second sleeve 13 can be fixedly installed supporting disk 5 away from one end of gear mechanism 4, the end that first sleeve 12 passes the second sleeve 13 has been threaded connection revolving part 16, and revolving part 16 is positioned by supporting disk 5, the axially-movable of restriction revolving part 16, revolving part 16 can rotate relative to supporting disk 5, rotate revolving part 16, be threaded connection, the first sleeve 12 can be driven to move up and down.
In above-mentioned illustrative examples, connecting rod 11 can be fixedly installed first handle 14 away from one end of gear mechanism 4, and first handle 14 can be connected with torque spanner, can rotate by drivening rod 11, to gear mechanism 4 transmitting torque by turning first handle 14; Also can by first handle 14 connecting rod 11 upwards be extracted or advance downwards, realize with the disengagement of gear mechanism 4 or be rigidly connected.
In above-mentioned illustrative examples, can be matched in clearance between the first sleeve 12 and connecting rod 11.
In above-mentioned illustrative examples, the second sleeve 13 can be provided with the kidney slot moved up and down for drawing mechanism 3.
In above-mentioned illustrative examples, revolving part 16 can be provided with second handle 15, can be rotated by driven rotary part 16 by second handle 15, revolving part 16 rotates, due to the position-limiting action of supporting disk 5, revolving part 16 non-displacement in the axial direction, therefore, by screw-driven, the first sleeve 12 moves up and down.
In above-mentioned illustrative examples, drawing mechanism 3 can adopt stretching bar 31, and one end and first sleeve 12 of stretching bar 31 are hinged, and the other end and the gear mechanism 4 of stretching bar 31 are hinged.
As shown in Figure 1 and Figure 2, lay in the illustrative examples of device for screwing up at nut provided by the invention, nut lays device for screwing up can also comprise the indexing mechanism 2 with calibration function, linkage 1 is through indexing mechanism 2, indexing mechanism 2 comprises rolling disc 22 and index dial 21, index dial 21 has the parts of long and narrow cavity for being fixed on, index dial 21 is provided with several locating hole, needs position, the hole one_to_one corresponding of fastening nut in locating hole and parts; Rolling disc 22 is fixedly connected with supporting disk 5 by column 6, and rolling disc 22 is provided with pin hole, and rolling disc 22 rotates, pin hole can be made to overlap with the arbitrary locating hole on index dial 21, and under the state overlapped with locating hole at pin hole, plug bearing pin, setscrew nut riding position.
Indexing mechanism 2 provided by the invention is made up of the rolling disc 22 of top and the index dial 21 of below, and rolling disc 22 above only can arrange a pin hole, and with latch, the latch state that fixes is used.Index dial 21 below can be provided with the locating hole of a circle, the position of locating hole is consistent with the hole site (pitch circle) will tightened below, one-to-one relationship.After tightening what a nut, extract latch, rotate rolling disc 22 above, now, linkage 1, gear mechanism 4 and drawing mechanism 3 integrally, turn to position, next hole simultaneously, are plugged latch, repeat fastening nut action.
Lay in the illustrative examples of device for screwing up at nut provided by the invention, gear mechanism 4 comprises gear carrier, gear carrier is provided with trench structure, the end of connecting rod 11 is provided with the plug construction matched with trench structure, by the cooperation of trench structure and plug construction, can realize being rigidly connected of connecting rod 11 and gear mechanism 4, and connecting rod 11 can drive trench structure to rotate.
Further, the plug construction that connecting rod 11 is arranged can be six square toes, the trench structure that gear mechanism 4 is arranged can be six square grooves 48 (as shown in Figure 3), and six square toes can be inserted in interior six square grooves of gear mechanism 4, being rigidly connected of both realizations.Downward promotion first handle 14, connecting rod 11 moves downward, six square toes are made to arrive six square groove 48 positions, turn first handle 14, regulate six square toes corresponding with the position of six square grooves 48, downward promotion first handle 14, makes six square toes insert in six square grooves 48, realizes being rigidly connected of connecting rod 11 and gear mechanism 4.Upwards promote first handle 14, connecting rod 11 is up walked, and six square grooves 48 on six square toes and gear mechanism 4 are thrown off, and gear mechanism 4 just can be opened or fold and regain under the effect of drawing mechanism 3.
As shown in Figure 3, in above-mentioned illustrative examples, gear carrier can also be provided with driving gear 41, travelling gear 42 and plum blossom gear 43, driving gear 41 is arranged on the periphery of trench structure, driving gear 41 can by the transmission of at least one travelling gear 42 (two travelling gears 42 such as shown in figure), plum blossom gear 43 is driven to rotate, plum blossom gear 43 is last in gear mechanism 4, act directly on nut, there is the function that nut and carry-over moment are laid in clamping.
As shown in Figure 4, in above-mentioned illustrative examples, plum blossom gear 43 is provided with the groove 44 for placing nut, groove 44 circumference is provided with at least one spring cavity, be provided with spring 45 in spring cavity, the inner of spring cavity is provided with steel ball 46, and the outer end of spring cavity is provided with plug screw 47.Nut is positioned in groove 44, and by steel ball 46 Compress Spring 45, binding nut, state is reliable, and can ensure before tightening action, nut does not come off.
In the above-described embodiments; nut lays device for screwing up can also comprise cylindrical shell 7; cylindrical shell 7 is located at outside linkage 1, drawing mechanism 3; when transferring nut and lay device for screwing up in the parts with long and narrow cavity; first cylindrical shell 7 is put into parts, protect the cavity inner wall of parts not to be scratched by cylindrical shell 7.
The specific embodiment that nut provided by the invention lays device for screwing up be used in large aerospace engine high pressure combined rotor connect in tightening method, comprise the following steps:
Nut prepares before installing: use crane and suspender by HPTR arranged orthogonal in HPCR, and the radial direction completing HPTR is fixed and spline, prevents it from toppling over and rotates.
A) be first connected with HPTR rear shaft neck by the index dial 21 (index dial 21 is the keepers for being fixed on parts) below in indexing mechanism 2, implement device main body is tentatively connected with engine component.
B) cylindrical shell 7 is put into the cavity of parts (High Pressure Turbine Rotor) through indexing mechanism 2, the inwall of protection parts is not scratched.
C) upwards first handle 14 is promoted, drivening rod 11 moves upward, gear mechanism 4 and connecting rod 11 are thrown off, turn second handle 15, first sleeve 12 moves downward, and drive stretching bar 31 to move downward, driven wheel mechanism 4 opens downwards (close to 180 °), in the on-state, linkage 1, gear mechanism 4 and drawing mechanism 3 are stretched into the cavity putting into parts.
D) after gear mechanism 4 arrives operating position, second handle 15 is oppositely turned, gear mechanism 4 upwards lifting, when reaching 90 °, downward promotion first handle 14, drivening rod 11 moves downward and injects gear mechanism 4, realizes being rigidly connected of gear mechanism 4 and connecting rod 11.
E) utilize indexing mechanism 2, determine first nut location, and lock index dial 21.
F) upwards first handle 14 is promoted, drivening rod 11 moves upward, connecting rod 11 and gear mechanism 4 are thrown off, take out main element and (comprise connecting rod 11, rolling disc 22 on stretching bar 31, gear mechanism 4 and indexing mechanism 2), nut loaded onto by the plum blossom gear 43 of gear mechanism 4, checks whether reliable grip nut.
G) under the state opening (close to 180 °) at gear mechanism 4, linkage 1, gear mechanism 4 and drawing mechanism 3 are stretched in the cavity of parts downwards, namely also put into the cavity of parts with the plum blossom gear 43 of nut.
H) after gear mechanism 4 arrives operating position, oppositely turn second handle 15, gear mechanism 4 upwards lifting, when reaching 90 °, promote first handle 14 downwards, drivening rod 11 injects gear mechanism 4, realize being rigidly connected of gear mechanism 4 and connecting rod 11, nut and threaded bolt contacts, turn first handle 14, realizes laying nut and tightening in advance; And the final fastening nut of moment on request.
I) after tightening first nut, upwards promote first handle 14, connecting rod 11 and gear mechanism 4 are thrown off.Turn second handle 15, gear mechanism 4 is opened downwards, and upwards promote under the state that gear mechanism 4 is opened downwards and take out the main body such as sleeve, again fill a nut, index dial 21 forwards next position, hole to and locks, and repeats the laying of nut, tightens action.
The course of action that nut provided by the invention lays device for screwing up decomposition nut is the above-mentioned inverse process tightening action.
Present invention also offers a kind of nut and lay tightening system, it nut comprised in industrial endoscope and above-mentioned any embodiment lays device for screwing up.
Nut provided by the invention lays the problem that device for screwing up can solve operation accessibility, and because HPTR rear shaft neck internal diameter is little, operator observes difficulty, must with endoscope with the use of, whole operating process Endoscope-assisted observes nut bore position, nut lays tight condition.
Nut provided by the invention is laid on device for screwing up and is provided with through hole, industrial endoscope can be transmitted the survey line of band probe by through hole toward nut placing position, two operators are needed during operation, be responsible for seeing that in industrial endoscope display, picture is to assign instruction for one, another name operates according to instruction.
According to the various embodiments described above, the present invention can be derived and at least have the following advantages:
1) attaching nut's exact placement: the installation operation of large aerospace engine mesohigh combined rotor attaching nut realizes its important prerequisite of tightening.The operation of laying of nut comprises: first utilize mechanism in device to be clamped by nut, and state is reliable, does not come off before tightening action, can exact placement on bolt; Then turn force transmission mechanism on device, on request moment fastening nut, final guarantee nut is firmly tightened on bolt.Under normal circumstances, manual operation has force feedback and vision positioning function, according to the screw-in position of nut and threaded bolt contacts situation adjusting nut, can ensure that nut screws in smoothly, not crooked.The present invention is calculated by accurate dimension chain between structure and ensures that, when gear mechanism 4 is retracted to 90 °, just nut and bolt are on same pitch circle, ensure that the concentricity of nut and bolt, screw in screw buckle smoothly.
2) because HPTR rear shaft neck internal diameter is less than 120mm, internal diameter is very little, and the present invention is by linkage 1, gear mechanism 4 and drawing mechanism 3 etc., achieve folding and expanding function, under the state that outline is little, put in inner chamber, open again after arriving assembling place, be applicable to the long and narrow space that internal diameter is little.
3) large aerospace engine mesohigh combined rotor next-door neighbour combustion chamber, work under bad environment, temperatures as high about 600 DEG C, after engine test, part is easily bonding, not easily decomposes, large many during torque ratio assembling, estimate to decompose 2 times that moment is screw-down torque, the present invention, by several cylindrical shells of intussusception, had both added intensity, rigidity, decomposition matching requirements can be met again, achieve several functions.
4) attaching nut is generally that 30 ~ 40 nuts are uniform along one week, diameter is M10 ~ M14, lay that to tighten step many, operator cannot see nut and the device duty of assembling place, indexing mechanism 2 provided by the invention can accurate calibration, and it has and attaching nut's index dial 21 one to one, and the locating hole position distribution on index dial 21 distributes consistent with nut bore position below, improve efficiency of assembling, enhance operability.
In sum, the present invention can replace staff exact placement nut, reliably tighten in long and narrow cavity, decompose nut, what meet nut lays demand, and length (such as about 200mm) can be regulated as required, achieve operation accessibility, also improve installation effectiveness and the precision of large aerospace engine mesohigh combined rotor attaching nut; Nut provided by the invention lays the manufacture of device for screwing up in addition and maintenance cost is low.
Nut provided by the invention is laid device for screwing up and is not only applicable in the connection of large aerospace engine high pressure combined rotor, and the nut that can also be applied to other is laid, assembling place of accessibility difference.
In describing the invention; it will be appreciated that; the word such as " first ", " second " is used to limit parts; be only used to be convenient to distinguish above-mentioned parts; as there is no Stated otherwise; above-mentioned word does not have particular meaning, therefore can not be interpreted as limiting the scope of the invention.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit; Although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the field are to be understood that: still can modify to the specific embodiment of the present invention or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solution of the present invention, it all should be encompassed in the middle of the technical scheme scope of request of the present invention protection.
Claims (15)
1. a nut lays device for screwing up, it is characterized in that: comprise for the linkage of carry-over moment, drawing mechanism and the gear mechanism for binding nut, described gear mechanism is hinged on one end of described linkage, described drawing mechanism is connected with described linkage and described gear mechanism, described gear mechanism can be made relative to described linkage expansion or folding by described drawing mechanism; Described linkage comprises connecting rod, described connecting rod and described gear mechanism can realize being rigidly connected and throwing off, under the state that described connecting rod and described gear mechanism are thrown off, make described gear mechanism relative to described linkage expansion or folding by described drawing mechanism, under folding at described gear mechanism the state put in place relative to described linkage, described connecting rod can realize and being rigidly connected of described gear mechanism.
2. nut as claimed in claim 1 lays device for screwing up, it is characterized in that: described linkage also comprises the first sleeve and the second sleeve, described connecting rod is arranged in described first sleeve, described first sleeve is arranged in described second sleeve, described gear mechanism and described second sleeve hinged, described drawing mechanism and described first sleeve connection, described first sleeve moves up and down, and described gear mechanism can be driven relative to described linkage expansion or folding by described drawing mechanism.
3. nut as claimed in claim 2 lays device for screwing up, it is characterized in that: described second sleeve is fixedly installed supporting disk away from one end of described gear mechanism, the end that described first sleeve passes described second sleeve has been threaded connection revolving part, described revolving part is positioned by described supporting disk, and can rotate relative to described supporting disk, rotate described revolving part, be threaded connection, described first sleeve can be driven to move up and down.
4. nut as claimed in claim 3 lays device for screwing up, it is characterized in that: described nut is laid device for screwing up and also comprised indexing mechanism, described linkage is through described indexing mechanism, described indexing mechanism comprises rolling disc and index dial, described index dial has the parts of long and narrow cavity for being fixed on, described index dial is provided with several locating hole, in described locating hole and described parts, needs position, the hole one_to_one corresponding of fastening nut; Described rolling disc is fixedly connected with described supporting disk by column, described rolling disc is provided with pin hole, described turn disc, described pin hole can be made to overlap with the arbitrary described locating hole on described index dial, and under the state overlapped with described locating hole at described pin hole, plug bearing pin, setscrew nut riding position.
5. nut as claimed in claim 1 lays device for screwing up, it is characterized in that: described gear mechanism comprises gear carrier, described gear carrier is provided with trench structure, the end of described connecting rod is provided with the plug construction matched with described trench structure, by the cooperation of described trench structure and described plug construction, can realize being rigidly connected of described connecting rod and described gear mechanism, and described connecting rod can drive described trench structure to rotate.
6. nut as claimed in claim 5 lays device for screwing up, it is characterized in that: described gear carrier is also provided with driving gear, travelling gear and plum blossom gear, described driving gear is arranged on the periphery of described trench structure, described driving gear can by the transmission of travelling gear described at least one, drive described plum blossom pinion rotation, described plum blossom gear is used for binding nut.
7. nut as claimed in claim 6 lays device for screwing up, it is characterized in that: described plum blossom gear is provided with the groove for placing nut, described groove circumference is provided with at least one spring cavity, spring is provided with in described spring cavity, the inner of described spring cavity is provided with steel ball, and the outer end of described spring cavity is provided with plug screw.
8. nut as claimed in claim 2 lays device for screwing up, and it is characterized in that: described drawing mechanism comprises stretching bar, one end and described first sleeve of described stretching bar are hinged, and the other end and the described gear mechanism of described stretching bar are hinged.
9. nut as claimed in claim 1 lays device for screwing up, it is characterized in that: described connecting rod is fixedly installed first handle away from one end of described gear mechanism, described link rotatable can be driven, to described gear mechanism transmitting torque by rotating described first handle; And described connecting rod upwards can be extracted or advance downwards by described first handle, realize with the disengagement of described gear mechanism or be rigidly connected.
10. nut as claimed in claim 3 lays device for screwing up, it is characterized in that: described revolving part is provided with second handle, described revolving part can be driven to rotate by described second handle.
11. nuts as claimed in claim 1 lay device for screwing up; it is characterized in that: described nut is laid device for screwing up and also comprised cylindrical shell; described cylindrical shell is located at outside described linkage, drawing mechanism, and the inwall for the protection of the parts with long and narrow cavity is not scratched.
12. 1 kinds of nuts laying device for screwing up based on nut according to claim 1 lay tightening method, it is characterized in that, comprise the following steps:
S1) connecting rod and gear mechanism are thrown off, by drawing mechanism, gear mechanism is launched relative to linkage, and by gear mechanism binding nut;
S2) linkage, gear mechanism and drawing mechanism are stretched in the parts with long and narrow cavity;
S3) made by drawing mechanism that gear mechanism is folding relative to linkage to put in place, then connecting rod and gear mechanism are rigidly connected;
S4) by gear mechanism, nut is placed in parts the position needing fastening nut, pivot link, driven wheel mechanism fastening nut.
13. nuts as claimed in claim 12 lay tightening method, it is characterized in that: in step S1) front, also determine the riding position of first nut in parts by indexing mechanism.
14. nuts as claimed in claim 13 lay tightening method, it is characterized in that: in step S4) after, connecting rod and gear mechanism are thrown off, under the state that gear mechanism launches relative to linkage, upwards hoisting nut lays device for screwing up, again fill a nut, the rolling disc in indexing mechanism forwards next position, hole to and locks, and repeats nut and lays, tightens action.
15. 1 kinds of nuts lay tightening system, it is characterized in that: comprise industrial endoscope and the nut as described in any one of claim 1-11 lays device for screwing up.
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| CN105522537B CN105522537B (en) | 2017-05-17 |
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| CN108237393B (en) * | 2016-12-27 | 2019-08-27 | 中国航发商用航空发动机有限责任公司 | Nut tightening device |
| CN107225393A (en) * | 2017-06-02 | 2017-10-03 | 中国航发南方工业有限公司 | Compressor auxiliary installation device |
| CN108000127A (en) * | 2017-12-12 | 2018-05-08 | 大连理工大学 | A kind of aircraft engine high pressure rotor seal pan postposition nut tightening device and method |
| CN108080939A (en) * | 2017-12-12 | 2018-05-29 | 大连理工大学 | A kind of preposition nut tightening device of aircraft engine high pressure rotor seal pan and method |
| CN108000127B (en) * | 2017-12-12 | 2019-05-17 | 大连理工大学 | A kind of aircraft engine high pressure rotor seal pan postposition nut tightening device and method |
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| CN111993344A (en) * | 2019-05-27 | 2020-11-27 | 中国航发商用航空发动机有限责任公司 | Nut conveying device and nut mounting system |
| DE102019132106A1 (en) * | 2019-11-27 | 2021-05-27 | Rolls-Royce Deutschland Ltd & Co Kg | Screw connection device for the mechanical connection of a front drum and a rear drum of a compressor of a gas turbine engine |
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| CN112589408A (en) * | 2020-12-11 | 2021-04-02 | 北京航空航天大学 | Automatic tightening device and method for blind cavity nut of aero-engine compressor rotor |
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| CN115229479A (en) * | 2021-04-23 | 2022-10-25 | 中国航发商用航空发动机有限责任公司 | Rotor connecting nut screwing device and method |
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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. |