CN210616311U

CN210616311U - Aircraft engine exhaust taper hole processing fixing device

Info

Publication number: CN210616311U
Application number: CN201921671456.5U
Authority: CN
Inventors: 刘国臣; 韩其飞; 赵登祥; 张勇; 王喜; 纪晓飞
Original assignee: Shandong Hongqi Electrical Group Co ltd
Current assignee: Shandong Hongqi Electrical Group Co ltd
Priority date: 2019-10-08
Filing date: 2019-10-08
Publication date: 2020-05-26
Anticipated expiration: 2029-10-08

Abstract

The utility model discloses an aircraft engine exhaust taper hole processing fixing device, it includes the workstation, the oblique backing plate is equipped with on the workstation, the top surface of oblique backing plate has from going to the heeling setting and from the bearing surface of left right bank of leaning on, be connected with top surface and bearing surface parallel arrangement's clamp dress base on the oblique backing plate, be connected with the fixing base on pressing from both sides the dress base, it is connected with the fixed column that rotates and can connect the blast pipe by the drive of rotary power unit to rotate on the fixing base, the top surface setting of fixing column perpendicular to clamp dress base, the top of fixed column has the spiro union section that can be connected with the bottom hole of blast pipe, still be connected with the closing device who is used for fixed blast pipe on the fixing. The utility model discloses the oblique taper hole of exhaust to on the blast pipe that can be accurate is processed, has machining precision height, long service life and reduction in production cost's advantage.

Description

Aircraft engine exhaust taper hole processing fixing device

Technical Field

The utility model relates to an aircraft engine exhaust taper hole processing fixing device.

Background

The rear end of the engine of the aircraft is connected with an exhaust pipe, and the exhaust pipe can exhaust combusted gas and form airflow, so that the aircraft is pushed to advance. The existing aircraft exhaust pipe (commonly called as a spray pipe) comprises a pipe body, wherein a step surface connected with an engine is processed on the inner wall of the pipe body, a plurality of exhaust tapered holes which are distributed annularly are arranged at the rear end of the pipe body, the exhaust tapered holes are inclined in two dimensions, firstly, the exhaust tapered holes are arranged in a divergent manner from the front end to the rear end, namely, the included angle between the central line of the exhaust tapered holes and the central line of the pipe body is about 18 degrees; secondly, the central line of the exhaust inclined taper hole is not completely on the axial section of the pipe body, namely, the axial included angle between the central line of the exhaust inclined taper hole and the central line of the pipe body is about 3 degrees. The angle of the two included angles can be specifically determined according to specific parameters of the aircraft, but due to the existence of the two included angles, the processing of the exhaust tapered hole is difficult, and if the included angle of the exhaust tapered hole is cheap at any angle, the accuracy and the distance of the flight of the aircraft are greatly reduced. The existing common drilling machine is difficult to process the exhaust inclined taper hole, the positioning and drilling angle of the drill machine is difficult to grasp, the machining angle is easy to be inaccurate when the drill machine clamps for multiple times, and the exhaust pipe is clamped and positioned by existing clamping equipment if the existing machining center is used for machining.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an aircraft engine exhaust taper hole processing fixing device of blast pipe that can process the aircraft to can guarantee the processing accuracy nature of exhaust taper hole, guarantee the performance of aircraft.

In order to solve the technical problem, the provided aircraft engine exhaust inclined taper hole processing and fixing device comprises a workbench and is characterized in that: the utility model discloses a blast pipe clamping device, including workstation, oblique backing plate, fixing base, rotatory power unit drive, the top of fixing base is connected with the fixed column that just can connect the blast pipe, the top of fixed column perpendicular to presss from both sides the setting of dress base, the top surface of oblique backing plate has from going to the hypsokinesis setting and from the left side to the right side's oblique backing surface that inclines, be connected with top surface and the hypsokinesis setting on the oblique backing plate, it is connected with the fixing base on the clamp dress base to press from both sides, the top of fixed column has the spiro union section that can be connected with the bottom hole of blast pipe, still.

The compressing device comprises a hinged seat connected to the fixed seat, a compressing crank arm is hinged to the hinged seat and provided with an outward handle section and an inward extending clamping section, a fork mouth matched with the convex column on the outer surface of the exhaust pipe is arranged on the clamping section, and the fork mouth is provided with a fork mouth bottom which is inclined from top to bottom and extends outwards.

The fixing base is provided with a connecting support arm extending upwards, the top surface of the connecting support arm is parallel to the top surface of the clamping base, the bottom surface of the hinged base is attached to the top surface of the connecting support arm, the hinged base is connected with the connecting support arm through a bolt, a key hole extending upwards from the bottom surface of the hinged base is formed in the hinged base, a key hole extending downwards is formed in the top surface of the connecting support arm, and a positioning key is inserted into the key hole in the hinged base and the key hole in the connecting support arm.

The fixed seat is fixedly connected with an upward extending positioning column, the fixed column comprises a sleeve which is connected to the positioning column in a sleeved mode, a thread section is arranged on the upper portion of the sleeve, and the top of the positioning column is connected with an inner positioning shaft which can abut against the step surface of an inner hole in the bottom of the exhaust pipe.

The rotary power mechanism comprises a rotary nut which is rotatably connected to the positioning column, the lower portion of the sleeve is fixedly connected to the rotary nut, an inward concave jack is arranged on the surface of the outer periphery ring of the rotary nut, a driving handle is inserted into the jack, and a positioning bolt capable of positioning the fixing column is screwed on the fixing seat.

The upper surface of the inclined backing plate is connected with a flat backing plate, the upper end face and the lower end face of the flat backing plate are arranged in parallel, a downward concave strip-shaped key groove is formed in the upper surface of the inclined backing plate, an upward concave strip-shaped key groove is formed in the lower surface of the flat backing plate, a connecting key is arranged in the strip-shaped key groove and the strip-shaped key groove, a T-shaped groove is formed in the upper surface of the flat backing plate, and a clamping base is connected to the flat backing plate through a T-shaped bolt penetrating through the.

The drilling and reaming mechanism comprises a drilling and reaming frame, a transverse connecting seat which is driven by a transverse power machine to slide transversely is connected to the drilling and reaming frame in a sliding mode, a vertical connecting seat which is driven by a vertical power machine to slide vertically is connected to the transverse connecting seat in a sliding mode, a drilling and reaming motor is installed on the vertical connecting seat, the drilling and reaming head is connected to a power output shaft of the drilling and reaming motor in a power mode, and a drill bit can be connected to the drilling and reaming head.

After adopting above-mentioned structure, owing to set up the oblique backing plate of above-mentioned structure, because the angle when having guaranteed fixed column connection exhaust pipe, make behind the fixed column connection exhaust pipe, the exhaust taper hole of treating processing of blast pipe the top under the processing state is vertical state to it is firm with the blast pipe centre gripping through closing device, utilize the drilling machine among the prior art just can process it, after having processed an exhaust taper hole, rotary power mechanism orders about the fixed column and rotates certain angle, can carry out the processing of next exhaust taper hole. Can find out through foretell course of working, the utility model discloses an accurate processing to the exhaust taper hole of above-mentioned blast pipe to guaranteed the angle setting of exhaust taper hole, and then guaranteed the flight accuracy nature of aircraft, need not purchase complicated machining center, greatly reduced manufacturing cost, and simple structure, long service life.

To sum up, the utility model discloses can be accurate to the exhaust taper hole on the blast pipe process, have machining precision height, long service life and reduction in production cost's advantage.

Drawings

The invention will be further described with reference to the accompanying drawings:

fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a schematic view of the fixing base shown in FIG. 1;

FIG. 3 is a schematic structural view of the inclined backing plate in the embodiment of FIG. 1;

3 FIG. 3 4 3 is 3 a 3 schematic 3 structural 3 view 3 taken 3 along 3 line 3 A 3- 3 A 3 in 3 FIG. 3 3 3; 3

FIG. 5 is a schematic view of the right side view of FIG. 3;

FIG. 6 is a schematic structural view of the pressing crank arm in the embodiment of FIG. 1;

FIG. 7 is a top view of FIG. 6;

FIG. 8 is a schematic view of the structure of an exhaust duct of an aircraft;

fig. 9 is a top view of fig. 8.

Detailed Description

As shown in fig. 8 and 9, the applicant provides a finished exhaust pipe for an aircraft engine, the exhaust pipe having a pipe body, wherein a plurality of exhaust tapered holes 50 are provided on an upper portion of the pipe body (referred to as an upper portion in the drawings, and a tail portion of the exhaust pipe in an actual use process), that is, when the pipe body is cast, a plurality of protrusions (which may also be referred to as external surface studs) are provided on an outer wall of the pipe body, and the exhaust tapered holes are formed by machining at the protrusions, as is apparent from the drawings, an included angle between a center line of the exhaust tapered hole 50 and a center line of the exhaust pipe in an axial section is X, and an included angle between a center line of the exhaust tapered hole 50 and a center line of the exhaust pipe in a radial section is Y.

Referring to fig. 1, 2 and 3, the present invention provides an embodiment of an aircraft engine exhaust taper hole processing and fixing device, which can be used on a drilling machine in the prior art, and can also be used alone, and includes a workbench 2, an inclined backing plate 5 is mounted on the workbench 2, the top surface of the inclined backing plate 5 has an inclined pad surface that is inclined from front to back and from left to right, the front, back, left and right definitions are all defined by the directions in fig. 2, that is, the direction perpendicular to the straight direction is the front-back direction, and the left and right directions in the figure are the left and right directions of the machine, as shown in fig. 4 and 5, the inclined direction of the inclined backing plate can be clearly seen, a clamping base 6 with a top surface parallel to the inclined pad surface is connected on the inclined backing plate 5, in this embodiment, because other components need to be connected on the clamping base 6, the top of the clamping base needs to machine a connecting hole or a connecting groove, because the too much machining that can lead to above-mentioned top surface deformation or unevenness, for the machining degree of 5 top surfaces of furthest's reduction oblique backing plate, because the upper surface of oblique backing plate 5 is connected with flat backing plate 15, the upper and lower terminal surface parallel arrangement of flat backing plate, be equipped with the rectangular form keyway of downward concave yield on the upper surface of oblique backing plate 5, be equipped with the strip keyway of the recess that makes progress on the lower surface of flat backing plate, be equipped with the connecting key in rectangular form keyway and the strip keyway, flat backing plate 15 upper surface is equipped with T type groove, press from both sides dress base 6 and connect on flat backing plate 15 through the T type bolted connection that passes T type groove, be connected with fixing base 7 on pressing from both sides dress base 6, the fixing base also can adopt the structure of T type groove and T type bolt with the connection of pressing from both sides the dress base, of.

Referring to fig. 1, 2, 6 and 7, the fixing base 7 is rotatably connected with a fixing column 8 which is driven by a rotary power mechanism to rotate and can be connected with the exhaust pipe, the fixing column 8 is perpendicular to the top surface of the clamping base, the top of the fixing column 8 is provided with a screw joint section which can be connected with a bottom hole of the exhaust pipe, and the fixing base 7 is further connected with a pressing device for fixing the exhaust pipe. The compressing device comprises a hinged seat 9 connected to the fixed seat 7, a compressing crank arm 10 is hinged to the hinged seat 9, the compressing crank arm 10 is provided with an outward handle section 101 and an inward extending clamping section 102, a fork mouth matched with the convex column on the outer surface of the exhaust pipe is arranged on the clamping section 102, the fork mouth is provided with a fork mouth bottom which is inclined from top to bottom and extends outwards, the inclined fork mouth bottom can be obviously seen in figures 6 and 7, namely, when the compressing crank arm 10 swings, the convex column clamping the exhaust pipe by the fork mouth is firmer, and the clamping is tighter.

Referring to fig. 1 and 2, the fixing base 7 has a connecting support arm extending upward, the top surface of the connecting support arm is parallel to the top surface of the clamping base, the bottom surface of the hinge base 9 is attached to the top surface of the connecting support arm, the hinge base 9 is connected to the connecting support arm through a bolt, a key hole extending upward from the bottom surface of the hinge base 9 is formed in the hinge base 9, a key hole extending downward is formed in the top surface of the connecting support arm, a positioning key is inserted into the key hole in the hinge base and the key hole in the connecting support arm, and the arrangement of the structure can ensure the connection stability of the hinge base and ensure the vertical degree of the hinge base when the hinge base clamps the convex column, thereby ensuring the processing precision. The fixed seat 7 is fixedly connected with an upward extending positioning column 11, the fixed column 8 comprises a sleeve connected to the sleeve sleeved on the positioning column 11, a thread section is arranged on the upper portion of the sleeve, the top of the positioning column 11 is connected with an inner positioning shaft 12 capable of abutting against the step surface of an inner hole at the bottom of the exhaust pipe, and the angle setting of the exhaust inclined taper hole can be ensured after the exhaust pipe is connected with an engine through the arrangement of the inner positioning shaft. The rotary power mechanism comprises a rotary nut 13 which is rotatably connected to the positioning column 11, the lower portion of the sleeve is fixedly connected to the rotary nut 13, a plurality of jacks which are recessed inwards are formed in the surface of the outer periphery ring of the rotary nut 13, the number of the jacks can be determined according to the number of the exhaust inclined conical holes, a driving handle 14 is inserted into each jack, a positioning bolt capable of positioning the fixing column is screwed on the fixing seat 7 and is driven by the driving handle, the rotary nut drives the sleeve to rotate, so that the exhaust pipe on the fixing column rotates by a certain angle, jacking positioning is achieved by screwing the positioning bolt, and one-time clamping is achieved to process the exhaust inclined conical holes.

The utility model discloses can also have other embodiments, other technical scheme that form in the record of claim no longer carry out the repeated description one by one, the utility model discloses do not receive the restriction of above-mentioned embodiment, based on the equivalent change and the part replacement of above-mentioned embodiment are all in the utility model discloses a protection within range.

Claims

1. The utility model provides an aircraft engine exhaust taper hole processing fixing device, includes workstation (2), characterized by: the utility model discloses a blast pipe fixing device, including workstation (2), workstation (2) are equipped with oblique backing plate (5), the top surface of oblique backing plate (5) has from going to the hypsokinesis setting and from the left side to the hypsokinesis face of bearing to the right side of inclining, be connected with top surface and the clamp of hypsokinesis face parallel arrangement on oblique backing plate (5) and adorn base (6), be connected with fixing base (7) on the clamp base (6), it is connected with fixed column (8) that rotate and can connect the blast pipe by the drive of rotary power mechanism on fixing base (7) to rotate, the top surface setting of base is adorned to fixed column (8) perpendicular to clamp, the top of fixed column (8) has the spiro union section that can be connected with the bottom.

2. The aircraft engine exhaust tapered hole processing fixing device according to claim 1, wherein: the compressing device comprises a hinged seat (9) connected to the fixed seat (7), a compressing crank arm (10) is hinged to the hinged seat (9), the compressing crank arm (10) is provided with an outward handle section (101) and an inward extending clamping section (102), a fork mouth matched with the convex column on the outer surface of the exhaust pipe is arranged on the clamping section (102), and the fork mouth is provided with a fork mouth bottom which is inclined from top to bottom and extends outwards.

3. The aircraft engine exhaust tapered hole processing fixing device according to claim 2, wherein: the fixing seat (7) is provided with a connecting support arm extending upwards, the top surface of the connecting support arm is parallel to the top surface of the clamping base, the bottom surface of the hinged seat (9) is attached to the top surface of the connecting support arm, the hinged seat (9) is connected with the connecting support arm through a bolt, a key hole extending upwards from the bottom surface of the hinged seat (9) is formed in the hinged seat (9), a key hole extending downwards is formed in the top surface of the connecting support arm, and a positioning key is inserted into the key hole in the hinged seat and the key hole in the connecting support arm.

4. The aircraft engine exhaust tapered hole processing fixing device according to claim 1, wherein: the fixed connection has reference column (11) that stretches up on fixing base (7), fixed column (8) are including connecting the sleeve of suit on reference column (11), and the screw thread section sets up on telescopic upper portion, the top of reference column (11) is connected with and can pushes up interior location axle (12) on the step face of leaning on the hole in blast pipe bottom.

5. The aircraft engine exhaust tapered hole processing fixing device according to claim 4, wherein: the rotary power mechanism comprises a rotary nut (13) rotatably connected to the positioning column (11), the lower portion of the sleeve is fixedly connected to the rotary nut (13), an inward concave jack is arranged on the surface of the outer periphery ring of the rotary nut (13), a driving handle (14) is inserted into the jack, and a positioning bolt capable of positioning the fixing column is screwed on the fixing seat (7).

6. The aircraft engine exhaust tapered hole machining fixture according to any one of claims 1 to 5, wherein: the upper surface of the inclined base plate (5) is connected with a flat base plate (15), the upper end face and the lower end face of the flat base plate are arranged in parallel, a downward concave strip-shaped key groove is formed in the upper surface of the inclined base plate (5), an upward concave strip-shaped key groove is formed in the lower surface of the flat base plate, a connecting key is arranged in the strip-shaped key groove and the strip-shaped key groove, a T-shaped groove is formed in the upper surface of the flat base plate (15), and a clamping base (6) is connected to the flat base plate (15) through a T-shaped bolt penetrating through the T-.