CN216967727U

CN216967727U - Aircraft engine assembly process rack

Info

Publication number: CN216967727U
Application number: CN202220618300.6U
Authority: CN
Inventors: 王冠华; 张文豪; 刘国强
Original assignee: Zhejiang Huaqing Aviation Engine Technology Co ltd
Current assignee: Zhejiang Huaqing Aviation Engine Technology Co ltd
Priority date: 2022-03-16
Filing date: 2022-03-16
Publication date: 2022-07-15
Anticipated expiration: 2032-03-16

Abstract

The utility model relates to an aircraft engine assembly process rack, which comprises: the attitude adjusting frame is provided with a mounting seat used for fixing the engine main body, a lifting mechanism used for driving the engine main body assembled on the mounting seat to carry out lifting adjustment and a turnover mechanism used for driving the engine main body assembled on the mounting seat to carry out turnover adjustment; a slide rail; the pressing device is adjacent to the posture adjusting frame and comprises a rack, a driving mechanism arranged on the rack and a pressing table driven by the driving mechanism and capable of moving up and down relative to the rack, the rack is arranged on the slide rail in a mode of being close to or far away from the posture adjusting frame, and therefore the pressing table is driven to move to the position above the mounting seat of the posture adjusting frame and to drive the pressing table to be away from the position above the mounting seat of the posture adjusting frame. The assembly process rack can adjust the posture of the engine and can also perform pressure assembly on corresponding parts of the engine.

Description

Aircraft engine assembly process rack

Technical Field

The utility model relates to the technical field of engine assembling platform devices, in particular to an aircraft engine assembling process rack.

Background

The aircraft engine powers the aircraft flight and, as the aircraft heart, it is rather likened to the "industrial flower". It directly affects the performance of the airplane and is an important embodiment of national industry and national defense strength. The complexity is not only in the manufacturing process, but also in the assembly stage.

Generally, engine assembly work is carried out on an assembly workbench or a tray, and because the tray and the workbench are not moved in the assembly process, after parts to be assembled are completed at one station, the engine is required to be turned over by a certain angle by means of external equipment so as to carry out assembly at the next station. Because the number of engine parts is large, the number of stations required to be assembled is large, the assembly process is complex, and the assembly of different parts can be completed only by overturning the engine to different positions for many times, so that the operation is complex, the assembly efficiency is low, the labor intensity is high, and on the other hand, the parts are easy to collide with each other, the parts are damaged, the assembly process is difficult, and the assembly difficulty is improved.

Therefore, the Chinese patent application with the application number of CN202110845837.6 (the application publication number is CN113618688A) discloses an engine multi-degree-of-freedom assembly operation platform, which comprises a positioner and a scissor type lifting platform; the scissor-type lifting platform and the positioner are fixedly arranged on the ground through foundation bolts; the scissor type lifting platform is of a rectangular structure; the positioner is arranged on one side of the long edge of the scissor type lifting platform; the positioner comprises a rack, a turnover transmission system, a lifting transmission system, a tool clamp and an electrical control main control cabinet. The operation platform provides an operation platform for the multi-degree-of-freedom assembly of the engine, and the equipment is used for clamping the whole engine to perform assembly work, can be lifted and rotated, and is supported in a single-upright-column mode; the clamping is stable, the rotation and the lifting are stable, and a lifting manual operation platform is matched to meet the requirement of engine assembly; can effectively reduce labor intensity and improve working efficiency.

The multi-degree-of-freedom assembly operation platform for the engine in the patent also has certain defects, the operation platform can lift and rotate the engine assembled on the operation platform, assembly of most parts is met, certain workpieces (such as bearing pieces) need to be applied with certain force to guarantee that the workpieces and the engine correspond to the tight fit requirement of the assembly position, the installation can be completed only by requiring operators to use corresponding tools to manually assemble or transfer the engine to a special platform, the assembly efficiency of the engine is relatively low undoubtedly by the operation mode, the assembly precision cannot be guaranteed by manual assembly, and the condition that the assembly requirement cannot be met exists.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of the prior art and provides an aircraft engine assembling process rack which can adjust the posture of an engine and can press and assemble corresponding parts of the engine.

The technical scheme adopted by the utility model for solving the technical problems is as follows: an aircraft engine assembly process rack comprising:

the attitude adjusting frame is provided with a mounting seat for fixing the engine main body, a lifting mechanism for driving the engine main body assembled on the mounting seat to carry out lifting adjustment and a turnover mechanism for driving the engine main body assembled on the mounting seat to carry out turnover adjustment;

a slide rail;

the pressing device is adjacent to the posture adjusting frame and comprises a rack, a driving mechanism arranged on the rack and a pressing table driven by the driving mechanism and capable of moving up and down relative to the rack, the rack is arranged on the slide rail in a mode of being close to or far away from the posture adjusting frame, and therefore the pressing table is driven to move to the position above the mounting seat of the posture adjusting frame and to drive the pressing table to be away from the position above the mounting seat of the posture adjusting frame.

In the process of press-mounting the relative parts, in order to detect the pressure applied to the parts and ensure that the parts can be assembled in place, the pressing table is provided with a pressure sensor, and the rack is provided with a display device electrically connected with the pressure sensor.

In the process of press-mounting the relative part, in order to detect the press-in displacement of the part, the press-mounting device further comprises a displacement sensor for detecting the lifting displacement of the pressing table, and the displacement sensor is electrically connected with the display device.

In order to ensure the stability of the up-and-down lifting movement of the pressing table and the accuracy of the pressure detection and displacement detection, the pressing table is provided with a guide post which extends upwards, the top of the rack is provided with a guide hole corresponding to the guide post, a linear bearing is arranged in the guide hole, the guide post is arranged in the linear bearing in a penetrating manner, and the displacement sensor is arranged at the top of the guide post.

Generally, the driving mechanism may adopt various existing driving mechanisms using a driving motor, a hydraulic cylinder or an air cylinder as a driving source, and in order to ensure the reliability of the press-fitting process of the parts on the engine, the driving mechanism includes a hydraulic cylinder and a hydraulic pump connected to the hydraulic cylinder, the hydraulic cylinder is disposed on the top of the frame, and an output shaft of the hydraulic cylinder is connected to the pressing table.

In order to further ensure the stability of the up-and-down lifting movement of the compaction table, the two guide posts are arranged at intervals, the two guide posts are symmetrically arranged relative to the output shaft of the hydraulic cylinder, the two guide holes in the top of the rack correspond to the two guide posts one by one, and the displacement sensor is arranged on one of the guide posts.

In order to facilitate the movement of the pressing device by an operator, the two sliding rails are arranged side by side in the horizontal direction, two groups of rollers are arranged at the bottom of the rack, and the two groups of rollers are correspondingly arranged on the two sliding rails.

Elevating system can adopt driving motor, pneumatic cylinder or cylinder etc. as the various current actuating mechanism of driving source, displacement precision and reliability that the mount pad reciprocated in order to guarantee, attitude adjustment frame still includes the mount, the mount is equipped with the guide rail of vertical setting, the mount pad slip restraint is in the guide rail on, elevating system include servo motor, with this servo motor's output shaft coaxial coupling's transmission lead screw and with transmission lead screw threaded connection's slider, the slider with the mount pad is connected.

In order to drive the engine body to rotate, turnover mechanism locates on the mount pad, turnover mechanism includes worm gear speed reduction drive subassembly, gear drive subassembly and is used for the fixed arm lock of centre gripping engine main part, worm gear speed reduction drive mechanism includes by the rotatory worm of hand wheel drive and the worm wheel of being connected with this worm drive, gear drive subassembly includes first gear of intermeshing and second gear, first gear with worm wheel coaxial drive is connected, fixed arm lock is located on the lateral wall face of second gear, and can follow the second gear is rotatory.

In order to conveniently fix the engine body on the mounting seat, the fixed clamping arm comprises two arc-shaped arms with opposite notches and capable of being butted together.

Compared with the prior art, the utility model has the advantages that: the engine body can carry out height control and carry out angle modulation through tilting mechanism through the elevating system of attitude control frame to make the engine body stop in arbitrary angle, the installation station can the high-speed transformation, has improved assembly efficiency. Meanwhile, when the engine body is used for mounting parts which do not need press mounting operation, the pressing device can be far away from the relative posture adjusting frame through the sliding rail, interference on posture adjusting action of the engine body can not be caused, when the engine body is used for mounting parts (such as bearings) which need press mounting, the pressing device can move towards the posture adjusting frame through the sliding rail, so that the pressing table is driven to move to the position above the position of the mounting seat of the posture adjusting frame, the related parts are pressed for mounting, and after the press mounting is completed, the pressing device can be quickly far away from the relative posture adjusting frame through the sliding rail, the assembling efficiency of the engine body is further improved, and the mounting precision of the related parts is guaranteed.

Drawings

FIG. 1 is a schematic perspective view of an embodiment of the present invention;

fig. 2 is a schematic perspective view of an attitude adjustment frame according to an embodiment of the present invention (not shown in the protection plate);

FIG. 3 is a vertical cross-sectional view of FIG. 2 taken along the axis of the second gear;

fig. 4 is a vertical sectional view of fig. 2 taken in the direction of the axis of the first gear.

Detailed Description

The utility model is described in further detail below with reference to the accompanying examples.

Directional terms such as "front," "rear," "upper," "lower," "left," "right," "side," "top," "bottom," and the like are used in the description and claims of the present invention to describe various example structural portions and elements of the utility model, but are used herein for convenience of description only and are to be determined based on the example orientations shown in the drawings. Because the disclosed embodiments of the present invention may be oriented in different directions, the directional terms are used for descriptive purposes and are not to be construed as limiting, e.g., "upper" and "lower" are not necessarily limited to directions opposite to or coincident with the direction of gravity.

Referring to fig. 1-4, an aircraft engine assembly process rack comprises an attitude adjusting bracket 10, a slide rail 20 and a pressing device 30. The posture adjusting frame 10 and the pressing device 30 are arranged adjacent to each other at intervals, and the sliding rail 20 is a ground rail and is arranged between the posture adjusting frame 10 and the pressing device 30 for the pressing device 30 to be integrally arranged thereon in a sliding manner so as to be close to or far away from the posture adjusting frame 10.

Referring to fig. 1 and 2, the posture adjustment frame 10 includes a fixed frame 11, guide rails 12, a mounting seat 13, a lifting mechanism 14, and a turnover mechanism 15, wherein the fixed frame 11 is a vertically disposed mounting groove 111, the guide rails 12 have two spaced side-by-side arrangements, and both the guide rails 12 are vertically disposed in the mounting groove 111 of the fixed frame 11. The mounting base 13 is used for fixing the engine body, and the mounting base 13 is slidably constrained on the guide rails 12 through the guide blocks 144, specifically, is located at a position corresponding to the middle area of the two guide rails 12, so as to ensure the stability of the up-and-down sliding of the mounting base 13. The lifting mechanism 14 is used for driving the engine body assembled on the mounting base 13 to perform lifting adjustment, and the turnover mechanism 15 is used for driving the engine body assembled on the mounting base 13 to perform turnover adjustment, namely angle adjustment.

With continued reference to fig. 2, specifically, the lifting mechanism 14 includes a servo motor 141, a drive screw 142 coaxially connected to an output shaft of the servo motor 141, and a slider 143 screwed to the drive screw 142. The servo motor 141 is disposed on the top of the fixing frame 11, the output shaft of the servo motor faces downward and is connected to the upper end of the transmission screw 142, and the lower end of the transmission screw 142 is supported on a bearing (not shown) of a fixing base. The sliding block 143 is fixedly connected with the inner portion of the mounting seat 13.

Referring to fig. 3, the open position of the mounting groove of the fixing frame 11 has a vertically disposed protection plate 110. In order to facilitate the up-and-down movement of the mounting base 13, the mounting base 13 has a relief opening 130 penetrating up and down, and the protection plate 110 is inserted into the relief opening 130.

The fixed frame 11 is also provided with a controller 16. The controller 16 has operation keys for usual functions such as "up", "down", "on", and "off". When the servo motor 141 is started, the forward rotation or the reverse rotation can be selected, and the screw rod 142 is matched with the screw thread of the sliding block 143 to drive the mounting base 13 to move up and down.

Referring to fig. 3 and 4, the turnover mechanism 15 is disposed on the mounting base 13, and specifically includes a worm and gear reduction transmission assembly, a gear transmission assembly, a fixing clamp arm 151 for clamping an engine body, and a hand wheel 157. The worm wheel 153 and worm 152 speed reducing transmission mechanism comprises a worm 152 driven by a hand wheel 157 to rotate and a worm wheel 153 in transmission connection with the worm 152, wherein the worm 152 extends forwards and backwards, and the axis direction of the worm wheel 153 extends leftwards and rightwards. The gear transmission assembly comprises a first gear 154 and a second gear 155 which are meshed with each other, the first gear 154 and the worm wheel 153 are arranged at a left-right interval and are coaxially and drivingly connected through a transmission shaft 156, and the fixed clamping arm 151 (which can pass through an auxiliary connecting block) is arranged on the side wall surface of the second gear 155 and can rotate along with the second gear 155. Preferably, a worm and gear speed reduction transmission assembly can adopt 1: the transmission ratio of 60 ensures that the operator is labor-saving when manually overturning.

The retainer clip arm 151 includes two arcuate arms 1510, the notches of the two arcuate arms 1510 being opposed and capable of abutting together so as to securely hold the engine block.

Referring to fig. 1, the pressing device 30 includes a frame 31, a driving mechanism disposed on the frame 31, and a pressing table 33 driven by the driving mechanism and capable of moving up and down relative to the frame 31.

The frame 31 is a rectangular frame structure as a whole, and two sets of rollers 37 are disposed at the bottom of the frame, correspondingly, the slide rail 20 has two rollers arranged side by side in the horizontal direction, and the two sets of rollers 37 are disposed on the two slide rails 20 correspondingly.

The driving mechanism comprises a hydraulic cylinder 321 and a hydraulic pump 322 connected with the hydraulic cylinder 321, the hydraulic cylinder 321 is arranged at the top of the frame 31, and an output shaft of the hydraulic rod extends downwards and is connected with the pressing platform 33. The hydraulic pump 322 is connected to the hydraulic cylinder 321 through a hydraulic line, and supplies power for extending and contracting the hydraulic cylinder 321.

The pressing table 33 has two guide posts 331 extending upward, specifically, the two guide posts 331 are spaced apart from each other, and the two guide posts 331 are arranged symmetrically with respect to the output shaft of the hydraulic cylinder 321. The top of the frame 31 has two guiding holes 310, linear bearings 311 are disposed in the two guiding holes 310, and two guiding posts 331 are respectively inserted into the respective linear bearings 311, so as to ensure the stability of the vertical movement of the pressing table 33.

In order to detect the pressure applied to the component during the press-fitting process of the opposite component, so as to ensure that the component can be assembled in place, the pressing table 33 is provided with a pressure sensor 34, and the frame 31 is provided with a display device 36 electrically connected with the pressure sensor 34. In addition, in order to detect the component press-fitting displacement amount, a displacement sensor 35 for detecting the vertical displacement of the pressing table 33 is further provided, and the displacement sensor 35 is electrically connected to a display device 36. In a preferred embodiment, the displacement sensor 35 is disposed on the top of the guiding column 331, and the displacement sensor 35 may be an infrared photoelectric sensor with the top surface of the rack 31 as a reference.

When a corresponding part (such as a bearing) on an engine body fixed on the attitude adjusting bracket 10 needs to be press-fitted, an operator can move the pressing device 30 along the slide rail 20, drive the pressing table 33 of the pressing device 30 to move to a position above the position of the mounting seat 13 of the attitude adjusting bracket 10, and operate the up-and-down movement of the pressing table 33 to complete the press-fitting of the part, wherein the position sensor and the pressure sensor 34 can detect the pressure change and the displacement change in the press-fitting process, so that the precision of the part assembly is ensured. After the press mounting is completed, an operator can drive the pressing device 30 to rapidly move away from the relative posture adjusting frame 10 along the slide rail 20, and interference on installation of other parts of the engine body is avoided.

Claims

1. An aircraft engine assembly process rack comprising:

the attitude adjusting frame (10) is provided with a mounting seat (13) for fixing the engine body, a lifting mechanism (14) for driving the engine body assembled on the mounting seat (13) to carry out lifting adjustment and a turnover mechanism (15) for driving the engine body assembled on the mounting seat (13) to carry out turnover adjustment;

it is characterized by also comprising:

a slide rail (20);

closing device (30), neighbouring posture adjustment frame (10) sets up, including frame (31), locate actuating mechanism on frame (31) and by actuating mechanism drive and can be relative frame (31) clamp (33) that reciprocate, frame (31) are with can be relative posture adjustment frame (10) are close to or are located away from the mode on slide rail (20), thereby drive clamp (33) shift to the top of mount pad (13) the position of posture adjustment frame (10) and drive clamp (33) are followed the top of mount pad (13) the position of posture adjustment frame (10) is kept away from.

2. An aircraft engine assembly process skid according to claim 1, wherein: the pressing table (33) is provided with a pressure sensor (34), and the rack (31) is provided with a display device (36) electrically connected with the pressure sensor (34).

3. An aircraft engine assembly process skid according to claim 2, wherein: the device is characterized by further comprising a displacement sensor (35) used for detecting the lifting displacement of the pressing table (33), wherein the displacement sensor (35) is electrically connected with the display device (36).

4. An aircraft engine assembly process skid according to claim 3, wherein: the pressing table (33) is provided with a guide column (331) extending upwards, the top of the rack (31) is provided with a guide hole (310) corresponding to the guide column (331), a linear bearing (311) is arranged in the guide hole (310), the guide column (331) penetrates through the linear bearing (311), and the displacement sensor (35) is arranged at the top of the guide column (331).

5. The aircraft engine assembly process rack of claim 4, wherein: the driving mechanism comprises a hydraulic cylinder (321) and a hydraulic pump (322) connected with the hydraulic cylinder (321), the hydraulic cylinder (321) is arranged at the top of the rack (31), and an output shaft of the hydraulic cylinder (321) is connected with the pressing platform (33).

6. The aircraft engine assembly process rack of claim 5, wherein: the two guide columns (331) are arranged at intervals, the two guide columns (331) are symmetrically arranged relative to the output shaft of the hydraulic cylinder (321), the two guide holes (310) in the top of the rack (31) correspond to the two guide columns (331) one by one, and the displacement sensor (35) is arranged on one of the guide columns (331).

7. An aircraft engine assembly process skid according to claim 1, wherein: the sliding rails (20) are arranged side by side in the horizontal direction, two groups of rollers (37) are arranged at the bottom of the rack (31), and the two groups of rollers (37) are correspondingly arranged on the two sliding rails (20).

8. An aircraft engine assembly process skid according to any of claims 1 to 7, wherein: posture adjustment frame (10) still include mount (11), mount (11) are equipped with guide rail (12) of vertical setting, mount pad (13) slip restraint guide rail (12) on, elevating system (14) including servo motor (141), with transmission lead screw (142) of the output shaft coaxial coupling of this servo motor (141) and with transmission lead screw (142) threaded connection's slider (143), slider (143) with mount pad (13) are connected.

9. An aircraft engine assembly process skid according to claim 8, wherein: turnover mechanism (15) are located on mount pad (13), turnover mechanism (15) include worm gear and worm speed reduction drive subassembly, gear drive subassembly and be used for centre gripping engine main part fixed arm lock (151), worm wheel (153) worm (152) speed reduction drive mechanism includes worm (152) by hand wheel (157) drive rotation and worm wheel (153) with this worm (152) transmission connection, gear drive subassembly includes first gear (154) of intermeshing and second gear (155), first gear (154) with worm wheel (153) coaxial drive is connected, fixed arm lock (151) are located on the lateral wall face of second gear (155), and can follow second gear (155) are rotatory.

10. An aircraft engine assembly process skid according to claim 9, wherein: the fixed clamp arm (151) includes two opposing notched arcuate arms (1510) that can be butted together.