CN215860537U - Reverse thrust actuator mounting structure and engine - Google Patents
Reverse thrust actuator mounting structure and engine Download PDFInfo
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- CN215860537U CN215860537U CN202120857761.4U CN202120857761U CN215860537U CN 215860537 U CN215860537 U CN 215860537U CN 202120857761 U CN202120857761 U CN 202120857761U CN 215860537 U CN215860537 U CN 215860537U
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Abstract
The utility model provides a mounting structure of a reverse-thrust actuator and an engine, wherein the mounting structure of the reverse-thrust actuator comprises the reverse-thrust actuator, a first mounting seat, a connecting piece and an eccentric bushing, a first mounting hole is formed in the first mounting seat, the connecting piece comprises a first connecting piece, the first connecting piece penetrates through a through hole in the first end of the reverse-thrust actuator to be connected with the first mounting hole, the inner ring of the eccentric bushing is connected with the first connecting piece in a matched mode, and the outer ring of the eccentric bushing is connected with the first mounting hole in a matched mode. The engine includes a thrust reverser mounting structure. According to the mounting structure of the reverse thrust actuator and the engine, the eccentric bushing is additionally arranged between the connecting piece and the first mounting seat, so that the problem of eccentricity between the reverse thrust actuator and the first mounting hole due to accumulated errors at two ends of the reverse thrust actuator is solved, the assembling difficulty between the reverse thrust actuator and the mounting seat of the movable outer cover is reduced, and the assembling stress between the reverse thrust actuator and the mounting seat of the movable outer cover is reduced.
Description
Technical Field
The utility model relates to a thrust reverser mounting structure and an engine.
Background
The aircraft engine is internally provided with a reverse thrust device which is used for generating reverse thrust when the aircraft lands and breaks off the takeoff, and when the reverse thrust is unfolded, the reverse thrust actuator 1 pushes the movable outer cover to move backwards and simultaneously sprays airflow of the outer duct in the reverse direction to generate the reverse thrust to realize the deceleration of the aircraft. When the reverse thrust actuator 1 is assembled to the reverse thrust structure, the two ends of the reverse thrust actuator 1 need to be connected with the second mounting seat 5 on the torque box and the first mounting seat 2 on the movable outer cover through connecting pieces respectively. Because the distance between the two ends of the reverse thrust actuator 1 can not be adjusted outside the factory after the reverse thrust actuator 1 leaves the factory, and because the structure of the reverse thrust actuator 1 is complex and the size is large, the assembly tolerance can be accumulated at the two ends of the reverse thrust actuator 1. As shown in fig. 1 to 3, when one end of the reverse actuator 1 is connected to the torque box support with a fixed structure, due to the existence of assembly tolerance, the hole center of the tail end of the reverse actuator 1 and the first mounting hole on the first mounting seat 2 of the movable housing may be eccentric, which results in difficult assembly of the reverse actuator 1 with the mounting seat of the movable housing and may cause assembly stress. The existing method for solving the problem that the eccentricity between the reverse thrust actuator 1 and the first mounting base 2 can be solved by adopting a mode of drilling a first mounting hole, but the first mounting hole of the drill is poor in product interchangeability during later maintenance.
SUMMERY OF THE UTILITY MODEL
The utility model provides a reverse-thrust actuator mounting structure and an engine, aiming at overcoming the defects that in the prior art, the hole center of the tail handle end of a reverse-thrust actuator and the hole center of a movable outer cover mounting seat are possibly eccentric, so that the reverse-thrust actuator and the movable outer cover mounting seat are difficult to assemble and assembling stress is possibly caused.
The utility model solves the technical problems through the following technical scheme
The utility model provides a reverse thrust actuator mounting structure, reverse thrust actuator mounting structure includes reverse thrust actuator, first mount pad and connecting piece, first mounting hole has been seted up on the first mount pad, the connecting piece includes first connecting piece, first connecting piece passes the through-hole of reverse thrust actuator's first end with first mounting hole is connected, and its characteristics lie in, reverse thrust actuator mounting structure still includes eccentric bush, the inner circle cooperation of eccentric bush connect in first connecting piece, the outer lane cooperation of eccentric bush connect in first mounting hole, the eccentricity of eccentric bush with the axle center of the through-hole of reverse thrust actuator's first end with the eccentricity between the axle center of first mounting hole is the same so that reverse thrust actuator's tip through-hole with the axle center installation of first mounting hole.
In this scheme, through install eccentric bush additional between connecting piece and first mount pad, and the eccentric adjustment volume of eccentric bush is the same with the eccentric volume between the axle center of the through-hole of the first end of thrust reverser and the axle center of first mounting hole, thereby solve the eccentric problem between thrust reverser and the first mounting hole because of the accumulative error at thrust reverser both ends leads to, reduce the assembly degree of difficulty between thrust reverser and the removal dustcoat mount pad, reduce the assembly stress between the two.
Preferably, the first mounting base comprises two first mounting plates which are arranged oppositely, connecting piece mounting holes are respectively formed in the two first mounting plates, and the connecting piece mounting holes in the two first mounting plates are arranged concentrically.
In this scheme, through setting up two first mounting panels for the load of thrust reverser transmits first mount pad through two first mounting panels on, avoids first mount pad to bear too big load that comes from the thrust reverser, improves the mechanical strength of first mount pad.
Preferably, the thrust reverser is located between the two first mounting plates.
In this scheme, through setting up the thrust reverser between two first mounting panels, two first mounting panels can evenly bear the load of thrust reverser, improve the ability that first mount pad bore load.
Preferably, the structure for mounting the thrust reverser further comprises a second mounting seat, the connecting piece further comprises a second connecting piece, a second mounting hole is formed in the second mounting seat, and the second connecting piece penetrates through a through hole at a second end of the thrust reverser to be connected with the second mounting hole.
Preferably, the connecting piece includes a bolt and a nut, the bolt is inserted into the first mounting hole and the through hole of the first end of the thrust reverser, and the nut and the bolt cooperate to lock the first mounting seat and the thrust reverser.
In this scheme, through chooseing for use bolt and nut as the connecting piece, bolt and nut are as standard component, and purchasing cost is low, can effectively reduce the overall cost of reverse thrust actuator mounting structure.
Preferably, the eccentric bushing comprises a bushing body and a bushing seat, the bushing seat is fixedly connected to one end of the bushing body, and the outer ring diameter of the bushing seat is larger than that of the bushing body.
Preferably, the bushing seat faces away from the thrust reverser.
In this scheme, the direction of bushing seat orientation keeping away from the reverse thrust actuator and bushing seat and bolt and nut counterbalance lean on, and the bolt and nut support and lean on the bushing seat when locking, and the bushing seat provides the reference thing for bolt and nut locking.
Preferably, a gap exists between the bushing body and the thrust reverser.
In this scheme, there is the clearance between bush body and the backstepping actuator, avoids the backstepping actuator to take place the friction at rotatory in-process and bush body and produces extra loss, improves the operating efficiency of backstepping actuator.
Preferably, the installation structure of the reverse thrust actuator further comprises a self-aligning bearing, an inner ring of the self-aligning bearing is connected to the connecting piece in a matched mode, and an outer ring of the self-aligning bearing is connected to the through hole in the end portion of the reverse thrust actuator in a matched mode.
In this scheme, through setting up the axis of self-aligning bearing adjustment thrust reverser tip's through-hole and the gradient between the first mounting hole axis, reduce the installation stress between connecting piece and thrust reverser, the first mounting hole.
An engine, characterized in that the engine comprises the thrust reverser mounting structure as described above.
The positive progress effects of the utility model are as follows:
according to the mounting structure of the reverse thrust actuator and the engine, the eccentric bushing is additionally arranged between the connecting piece and the first mounting seat, and the eccentric adjustment amount of the eccentric bushing is the same as the eccentric amount between the axis of the through hole at the first end of the reverse thrust actuator and the axis of the first mounting hole, so that the problem of eccentricity between the reverse thrust actuator and the first mounting hole caused by accumulated errors at two ends of the reverse thrust actuator is solved, the assembling difficulty between the reverse thrust actuator and the movable housing mounting seat is reduced, and the assembling stress between the reverse thrust actuator and the movable housing mounting seat is reduced.
Drawings
Fig. 1 is a schematic view of a mounting structure of a thrust reverser in the prior art.
Fig. 2 is a sectional view taken along line a-a of fig. 1.
Fig. 3 is a partially enlarged view of circle B in fig. 2.
Fig. 4 is a schematic view of a mounting structure of the thrust reverser of the present invention.
Fig. 5 is a sectional view taken along line a-a of fig. 4.
Fig. 6 is a partially enlarged view of circle B in fig. 5.
Fig. 7 is a schematic structural view of an eccentric bush of the present invention.
Fig. 8 is a cross-sectional view of the eccentric bushing a-a of fig. 7.
Description of reference numerals:
First connecting member 3
Eccentric bushing 4
Self-aligning bearing 6
Detailed Description
The utility model is further illustrated by the following examples, which are not intended to limit the scope of the utility model.
As shown in fig. 4-6, a reverse thrust actuator mounting structure, the reverse thrust actuator mounting structure includes a reverse thrust actuator 1, a first mounting seat 2 and a connecting piece, the reverse thrust actuator 1 is used for connecting a mobile housing and a torque box of an aircraft engine, when the aircraft lands or breaks off the takeoff, the torque box pushes the mobile housing of the engine to expand outwards through the reverse thrust actuator 1, the mobile housing guides the airflow of an outer duct to the reverse heading direction after being opened, and the reverse thrust is generated to realize the deceleration of the aircraft. The first mounting seat 2 is located on the mobile housing. First mounting hole has been seted up on first mount pad 2, and the connecting piece includes first connecting piece 3, and first connecting piece 3 passes the through-hole and the first mounting hole of the first end of thrust reverser 1 and is connected to link together thrust reverser 1 and first mount pad 2. The first mounting hole is opened on the first mounting base 2, and the first mounting hole is a through hole. The installation structure of the reverse thrust actuator further comprises an eccentric bushing 4, the inner ring of the eccentric bushing 4 is connected to the first connecting piece 3 in a matched mode, the outer ring of the eccentric bushing 4 is connected to the first installation hole in a matched mode, the reverse thrust actuator 1 is complex in structure and large in size, the reverse thrust actuator 1 is in the assembling process, and distance errors at two ends are inevitably accumulated. After the second end of the reverse thrust actuator 1 is fixedly connected with the torque box, the first end of the reverse thrust actuator 1 and the movable outer cover possibly have an eccentric condition, a set of bushing sets with different eccentric amounts are prepared in advance, and the eccentric amount between the reverse thrust actuator 1 and the first mounting hole is compensated by selecting the eccentric bushing 4 with the appropriate eccentric amount during assembly. Thus, even if the first end of the reverse thrust actuator 1 and the first mounting hole have eccentricity, the reverse thrust actuator 1 and the movable housing can be easily assembled, and the assembly stress caused by the eccentricity is reduced. As shown in fig. 7 and 8, the eccentric amount of the eccentric bush 4 is the same as the eccentric amount between the axial center of the through hole of the first end of the reverse actuator 1 and the axial center of the first mounting hole so that the end portion through hole of the reverse actuator 1 is mounted coaxially with the first mounting hole. The eccentricity between the through hole of the first end of the reverse thrust actuator 1 and the axis of the first mounting hole of the first mounting seat 2 is delta e, and the eccentricity of the eccentric bushing 4 is also delta e, so that the eccentricity between the through hole of the first end of the reverse thrust actuator 1 and the axis of the first mounting hole of the first mounting seat 2 is compensated by the eccentric bushing 4, and the through hole of the first end of the reverse thrust actuator 1 and the first mounting hole of the first mounting seat 2 are concentrically mounted.
The first mounting base 2 comprises two oppositely arranged first mounting plates 21, and the two first mounting plates 21 are oppositely arranged in parallel. Connecting piece mounting holes are respectively formed in the two first mounting plates 21, the connecting piece mounting holes in the two first mounting plates 21 are concentrically arranged, the two first mounting holes are opposite, the two first mounting holes are identical in shape and are circular, the diameters of the two first mounting holes are identical, and the circular mandrels of the two first mounting holes are located on the same straight line.
The reverse thrust actuator 1 is located between two first mounting panels 21, the first end that reverse thrust actuator 1 and first mounting panel 21 are connected is located in the middle of two first mounting panels 21, and the first end of reverse thrust actuator 1 is the same apart from the distance of two first mounting panels 21, first connecting piece 3 passes the first mounting panel 21 of one side earlier, passes the through-hole on the first end of reverse thrust actuator 1 again, passes the first mounting panel 21 of opposite side at last, link together first mount pad 2 and reverse thrust actuator 1. The reverse thrust actuator 1 is arranged between the two first mounting plates 21, the two first mounting plates 21 can evenly bear the load of the reverse thrust actuator 1, and the load bearing capacity of the first mounting seat 2 is improved.
The installation structure of the reverse thrust actuator further comprises a second installation seat 5, and the second installation seat 5 is used for connecting the torque box with the reverse thrust actuator 1. The connector also includes a second connector. And a second mounting hole is formed in the second mounting seat 5, and the second connecting piece penetrates through a through hole at the second end of the reverse thrust actuator 1 and is connected with the second mounting hole.
The connecting piece includes bolt and nut, and the through-hole of the first end on first mounting hole and the backstepping actuator 1 is worn to locate by the bolt, and the bolt passes the first mounting hole on two first mounting panels 21 respectively to and the backstepping actuator 1 that is located the centre of first mounting panel 21, first mount pad 2 of nut and bolt cooperation locking and backstepping actuator 1.
The eccentric bush 4 includes a bush body 41 and a bush housing 42, and the bush housing 42 is fixedly coupled to one end of the bush body 41, as shown in fig. 8, and the bush housing 42 is located at the right side of the bush body 41. The outer ring diameter of the bushing seat 42 is larger than the outer ring diameter of the bushing body 41, the inner diameter of the bushing seat 42 is the same as the inner diameter of the bushing body 41, and the eccentric amount of the bushing seat 42 is the same as the eccentric amount of the bushing body 41.
As shown in fig. 6, the bushing seat 42 faces away from the thrust reverser 1, the bushing body 41 of the eccentric bushing 4 passes through the first mounting hole, the end surface of the bushing seat 42 close to the bushing body 41 abuts against one side of the first mounting plate 21 away from the thrust reverser 1, when the head of the bolt and the nut are pressed against the bushing seat 42, the outer diameter of the bushing body 41 is the same as the outer diameter of the first mounting hole, the outer diameter of the bushing seat 42 is larger than the outer diameter of the bushing body 41, and the bushing seat 42 abuts against the first mounting plate 21.
A gap exists between the bushing body 41 and the reverse thrust actuator 1, so that energy loss caused by friction generated between the bushing body 41 and the reverse thrust actuator 1 during rotation and abrasion of the reverse thrust actuator 1 are avoided.
The reverse thrust actuator mounting structure further comprises a self-aligning bearing 6, an outer ring raceway of the self-aligning bearing 6 is one part of a spherical surface, and a curvature center is on a bearing axis, so that the self-aligning bearing 6 has a self-aligning function. Inner circle cooperation of self-aligning bearing 6 is connected in the connecting piece, and the outer lane cooperation of self-aligning bearing 6 is connected in the through-hole of the 1 tip of thrust reverser, when there is the contained angle between the axis of the through-hole of the 1 tip of thrust reverser and the axis of first mounting hole or second mounting hole, if do not install thrust reverser 6, then there is distortion during connecting piece rigid connection thrust reverser 1 and first mounting hole or second mounting hole, leads to the connecting piece to have installation stress. In the case of mounting the self-aligning bearing 6, the mounting piece axis can be adaptively adjusted according to the axis of the first mounting hole or the second mounting hole to reduce the mounting stress.
The utility model also provides an engine which comprises the reverse-thrust actuator mounting structure, one end of a reverse-thrust actuator 1 is connected to the movable housing through a connecting piece, the other end of the reverse-thrust actuator 1 is connected to the torque box through a connecting piece, when the airplane lands or breaks off the takeoff, the torque box transmits load to the movable housing of the engine through the reverse-thrust actuator 1, after the movable housing is opened, airflow in an outer duct of the engine is guided by the movable housing to be ejected in the reverse direction, and reverse thrust is generated to realize deceleration of the airplane.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and that the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications are within the scope of the utility model.
Claims (10)
1. The utility model provides a reverse thrust actuator mounting structure, reverse thrust actuator mounting structure includes reverse thrust actuator, first mount pad and connecting piece, first mounting hole has been seted up on the first mount pad, the connecting piece includes first connecting piece, first connecting piece passes the through-hole of reverse thrust actuator's first end with first mounting hole is connected, a serial communication port, reverse thrust actuator mounting structure still includes eccentric bush, the inner circle cooperation of eccentric bush connect in first connecting piece, the outer lane cooperation of eccentric bush connect in first mounting hole, the eccentricity of eccentric bush with the axle center of the through-hole of reverse thrust actuator's first end with the eccentricity between the axle center of first mounting hole is the same so that reverse thrust actuator's tip through-hole with the axle center installation of first mounting hole.
2. The thrust reverser mounting structure of claim 1, wherein the first mounting base includes two first mounting plates that are disposed opposite to each other, the two first mounting plates are respectively provided with connecting piece mounting holes, and the connecting piece mounting holes of the two first mounting plates are concentrically disposed.
3. The reaction actuator mounting structure according to claim 2, wherein the reaction actuator is located between the two first mounting plates.
4. The structure of claim 1, further comprising a second mounting base, wherein the connecting member further comprises a second connecting member, the second mounting base defines a second mounting hole, and the second connecting member passes through the through hole of the second end of the actuator and is connected to the second mounting hole.
5. The reverse-thrust actuator mounting structure according to claim 1, wherein the connecting member includes a bolt and a nut, the bolt is inserted through the first mounting hole and the through hole of the first end of the reverse-thrust actuator, and the nut and the bolt cooperate to lock the first mounting seat and the reverse-thrust actuator.
6. The thrust reverser mounting structure according to claim 5, wherein the eccentric bush includes a bush body and a bush housing that is fixedly attached to one end of the bush body, and an outer ring diameter of the bush housing is larger than an outer ring diameter of the bush body.
7. The reverse actuator mounting structure according to claim 6, wherein the bush housing is directed away from the reverse actuator.
8. The thrust reverser mounting structure of claim 6, wherein a gap exists between the bushing body and the thrust reverser.
9. The reverse actuator mounting structure according to any one of claims 1 to 8, further comprising a self-aligning bearing, an inner ring of which is fittingly connected to the connecting member, and an outer ring of which is fittingly connected to a through hole at an end portion of the reverse actuator.
10. An engine comprising the thrust reverser mounting structure according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120857761.4U CN215860537U (en) | 2021-04-25 | 2021-04-25 | Reverse thrust actuator mounting structure and engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120857761.4U CN215860537U (en) | 2021-04-25 | 2021-04-25 | Reverse thrust actuator mounting structure and engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215860537U true CN215860537U (en) | 2022-02-18 |
Family
ID=80315498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120857761.4U Active CN215860537U (en) | 2021-04-25 | 2021-04-25 | Reverse thrust actuator mounting structure and engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215860537U (en) |
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2021
- 2021-04-25 CN CN202120857761.4U patent/CN215860537U/en active Active
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