All-electric retractable actuator cylinder for aircraft landing gear

Abstract

The utility model discloses an all-electric retractable actuator cylinder for an aircraft landing gear, which belongs to the technical field of actuator cylinders and comprises an actuator cylinder body and a transmission shaft, the transmission shaft is hermetically mounted on the outer side of the actuator cylinder body in a penetrating and sliding manner, top plates are mounted at two ends of the interior of a connecting piece in a penetrating and sliding manner, and the two top plates are T-shaped. The tops of the two top plates are connected with limiting blocks in an attached mode. According to the all-electric folding and unfolding actuator cylinder for the aircraft landing gear, the top plates are arranged, the top plates are arranged in grooves in the two ends of the interior of the connecting piece in a penetrating and sliding mode through reset springs, then limiting blocks are connected to the top ends of the two top plates in an attached mode, and after a transmission shaft and the connecting piece are disassembled and assembled, the two reset springs can unload force and rebound; therefore, the two top plates can be driven to push the transmission shaft connected with the inner ends of the two limiting blocks to automatically pop out to the outer side of the connecting piece, and auxiliary disassembly and replacement of the connecting piece can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of actuators, in particular to a fully electric retractable actuator for aircraft landing gear. Background Art

[0002] The actuator is an important component that uses liquid or gas pressure to transmit force to achieve mechanical movement. It drives the piston movement through the pressure of the liquid or the expansion of the gas, and then drives the mechanical device connected to it to complete the predetermined action. The actuator is also used in aircraft landing gear. It is a device that realizes the retraction and extension of the landing gear and the steering of the aircraft tires through electronic control, hydraulic pressure or pneumatic pressure. It can not only realize the automatic retraction and extension of the landing gear and the steering control of the tires, but also improve the stability and safety of the aircraft.

[0003] The existing actuator is basically connected to the connecting piece by means of screws and bolts during installation. However, after the actuator and the connecting piece have been working for a long time, the connecting piece will become loose due to the vibration generated by use. After a long period of use, the actuator will become loose and fall off, which reduces the stability of the actuator. In order to overcome the above defects, prior art 1 (application number: CN202221227587.6, Chinese patent application date: 2022-05-21) is an automatic disassembly and assembly device for the screws of an actuator of an aircraft hydraulic system. By clamping the actuator in the clamping claw of the clamping cylinder, the actuator is automatically disassembled and assembled. During disassembly and assembly, the servo electric cylinder is controlled by the system to push the servo motor downward, so that the screw batch gradually moves downward and engages with the screws on the leading edge flap actuator, realizing automatic decomposition, collection and assembly of screws at special positions in the deep recesses of the actuator, achieving the special effect of fully automatic operation of screws in difficult-to-operate parts, which is conducive to improving work efficiency and high safety; although the existing technology can realize the disassembly, assembly and replacement of the actuator, when the connecting part and the actuator are disassembled and assembled, there is no automatic pop-up mechanism to quickly pop out the disassembled actuator, resulting in a complicated step of manual extraction, which is very time-consuming and labor-intensive.

[0004] Therefore, we proposed that the fully electric retractable actuator for aircraft landing gear can well solve the above problems. Utility Model Content

[0005] The purpose of the present utility model is to provide a fully electric retractable actuator for aircraft landing gear, so as to solve the problem raised in the above-mentioned background technology that in the current market, when the connecting part and the actuator are disassembled and assembled, there is no automatic ejection mechanism to quickly eject the disassembled actuator, resulting in a complex step of manual extraction, which is very time-consuming and labor-intensive.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fully electric retractable actuator for aircraft landing gear, comprising an actuator body and a transmission shaft, wherein the transmission shaft is sealed and slidably installed on the outside of the actuator body, and the diameter of the actuator body is larger than the diameter of the transmission shaft; the outer end of the transmission shaft is penetrated by a connecting piece, and the left side of the connecting piece is hollow, and a positioning seat is penetrated and positioned on the outside of the actuator body; the inner ends of the connecting piece are slotted and penetrated by top plates that are slidably installed, and the two top plates are in a "T" shape, and the tops of the two top plates are fit-connected with limiting blocks.

[0007] Preferably, limit blocks are positioned and installed on the outer sides of both ends of the transmission shaft, and the two limit blocks are symmetrically arranged about the transverse center line of the transmission shaft.

[0008] Preferably, a sliding groove is provided on the outer sides of the two limit blocks for sliding connection, wherein the two sliding grooves are symmetrically arranged on both sides of the interior of the connecting piece.

[0009] Preferably, the connecting member has grooves at both ends thereof provided with return springs, and the two return springs have the same structure, and the top ends of the two return springs are connected to a top plate.

[0010] Preferably, the inner ends of the connecting member are slotted through the sliding installation limit seats, and the inner ends of the two limit seats are inclined, and the inner ends of the two limit seats pass through the snap-connected limit slots, wherein the two limit slots are symmetrically opened on the outer sides of the two ends of the transmission shaft.

[0011] Preferably, baffles are positioned and installed at the top ends of the two limiting seats, and the two baffles have the same structure, and the outer ends of the two baffles are connected to the two sides of the inner wall of the connecting piece through extrusion springs.

[0012] Preferably, the outer ends of the two limit seats are mounted with shift rods via screws, and the outer ends of the two shift rods extend through and extend to the outsides of both ends of the connecting member, and the two shift rods are symmetrically arranged about the transverse center line of the connecting member.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0014] (1) A top plate is provided, and the top plate is installed by sliding through the return spring through the grooves at both ends of the inner part of the connecting piece, and then the limit blocks are connected at the top of the two top plates. At the same time, the two return springs are in a state of storing force. Because the inner ends of the two limit blocks are respectively provided at the outer ends of the two ends of the transmission shaft, after the transmission shaft and the connecting piece are disassembled and assembled, the two return springs will unload the force and rebound, thereby driving the two top plates to push the transmission shaft connected to the inner ends of the two limit blocks to automatically pop out to the outer side of the connecting piece, thereby realizing auxiliary disassembly and replacement of the connecting piece, and the operation is more time-saving and labor-saving, and there is no need for the complicated steps of manual removal.

[0015] (2) Setting limit blocks. By positioning and installing limit blocks on the outer sides of both ends of the transmission shaft, when the transmission shaft and the connecting piece are installed, it is only necessary to extend the limit blocks set at both ends of the transmission shaft through the two sliding grooves to the connecting piece. This can not only limit and fix the penetration position of the transmission shaft, but also guide the transmission shaft to slide, thereby avoiding the phenomenon of misalignment of the transmission shaft inside the connecting piece, and improving the connection stability between the transmission shaft and the connecting piece.

[0016] (3) A limit seat is provided, and a limit seat with an inclined shape is installed by sliding through the slots at both ends of the interior of the connecting piece. After the transmission shaft slides through and extends into the interior of the connecting piece, the two limit seats are moved to extend through the limit slots opened at both ends of the transmission shaft to limit and fix the position of the transmission shaft and the connecting piece after connection, thereby avoiding the phenomenon of the transmission shaft and the connecting piece loosening and falling off during use in the later stage, thereby improving the connection stability of the transmission shaft and the connecting piece.

[0017] (4) Furthermore, by setting baffles on the outer sides of the tops of the two limit seats, and then connecting the inner ends of the two baffles to the inner walls of the connector through extrusion springs, when the transmission shaft extends into the interior of the connector, the two sides of the bottom end of the connector will squeeze the two limit seats at the same time to expand and move. When they move to the appropriate position, the two extrusion springs will automatically pop the two limit seats into the two limit grooves through their own elastic force, thereby realizing automatic positioning and fixation of the transmission shaft and the connector, which is more practical.

[0018] (5) Furthermore, by positioning and installing a lever at the outer end of the two limit seats, and then extending the two levers through the two ends of the connector, the two limit seats can be separated from the two limit grooves by pulling the two levers. At this time, the drive shaft can be taken out from the inside of the connector, which is more convenient for later disassembly and replacement, and the operation is more time-saving and labor-saving. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the three-dimensional structure of the transmission shaft of the utility model;

[0021] Figure 3 This is a partial cross-sectional perspective structural diagram of the transmission shaft and connecting member of the utility model;

[0022] Figure 4 For this utility model Figure 3 A in the middle is an enlarged structural diagram;

[0023] Figure 5This is a schematic diagram of the sectional three-dimensional structure of the transmission shaft and the connecting piece of the utility model;

[0024] Figure 6 It is a partial cross-sectional three-dimensional structural schematic diagram of the connecting member and the top plate of the utility model after restoration.

[0025] In the figure: 1. Actuator body; 2. Transmission shaft; 3. Connector; 4. Positioning seat; 5. Limit seat; 6. Push rod; 7. Limit block; 8. Slide groove; 9. Baffle; 10. Extrusion spring; 11. Limit groove; 12. Top plate; 13. Return spring. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0027] This utility provides the following technical solutions:

[0028] Embodiment 1 is to solve the problem that when the existing connecting member 3 and the actuator body 1 are disassembled, there is no automatic ejection mechanism to quickly eject the disassembled actuator body 1, resulting in a complex manual extraction step, which is very time-consuming and labor-intensive. The following embodiment is disclosed:

[0029] The actuator body 1 and the transmission shaft 2, wherein the transmission shaft 2 is sealed and slidably installed on the outside of the actuator body 1, and the diameter of the actuator body 1 is larger than the diameter of the transmission shaft 2; the outer end of the transmission shaft 2 is penetrated and connected with a connecting piece 3, and the left inner part of the connecting piece 3 is hollow, and the outer side of the actuator body 1 is penetrated and positioned with a positioning seat 4; the inner ends of the connecting piece 3 are grooved and penetrated with top plates 12 that are slidably installed, and the two top plates 12 are "T" shaped, and the tops of the two top plates 12 are fit-connected with the limiting blocks 7.

[0030] Limit blocks 7 are positioned and installed on the outer sides of both ends of the transmission shaft 2, and the two limit blocks 7 are symmetrically arranged about the transverse center line of the transmission shaft 2; the outer sides of the two limit blocks 7 are slidably connected with slide grooves 8, wherein the two slide grooves 8 are symmetrically opened on both sides of the interior of the connecting member 3; return springs 13 are grooved at both ends of the interior of the connecting member 3, and the two return springs 13 have the same structure, and the top ends of the two return springs 13 are connected to the top plate 12.

[0031] like Figures 1-6As shown, during the disassembly and separation process of the transmission shaft 2 and the connecting member 3, because the transmission shaft 2 is not restricted by the two limit seats 5, the two return springs 13 can drive the two top plates 12 to extend and move, and then the two return springs 13 after storing force will automatically unload the force, and can simultaneously drive the two top plates 12 to automatically push the two limit blocks 7 to slide and pop out in the two slide grooves 8. At this time, the two limit blocks 7 will simultaneously drive the transmission shaft 2 to automatically pop out from the inside of the connecting member 3, which is more convenient for later disassembly and replacement, and achieves the effect of assisted disassembly and assembly. There is no need for manual extraction and replacement, and it is more practical.

[0032] The second embodiment is different from the first embodiment in that the transmission shaft 2 and the connecting member 3 can be quickly disassembled and replaced, which is more practical. The following is disclosed:

[0033] The slots at both ends of the interior of the connecting member 3 pass through the sliding installation limit seats 5, and the inner ends of the two limit seats 5 are inclined, and the inner ends of the two limit seats 5 pass through the snap-fit connection limit slots 11, wherein the two limit slots 11 are symmetrically opened on the outside of the two ends of the transmission shaft 2; the top ends of the two limit seats 5 are positioned and installed with baffles 9, and the two baffles 9 have the same structure, and the outer ends of the two baffles 9 are connected to the two sides of the inner wall of the connecting member 3 through extrusion springs 10; the outer ends of the two limit seats 5 are installed with shift rods 6 by screws, and the outer ends of the two shift rods 6 extend through and extend to the outside of the two ends of the connecting member 3, and the two shift rods 6 are symmetrically arranged about the transverse center line of the connecting member 3.

[0034] like Figures 1-4 When the two ends of the transmission shaft 2 are in the fixed position, the two ends of the transmission shaft 2 will squeeze the two limit seats 5 at the same time to slide and expand. When the transmission shaft 2 is moved to the appropriate position, the two extrusion springs 10 will squeeze the two baffles 9 at the same time to drive the two limit seats 5 to reset and move, so that the two limit seats 5 can be automatically popped out into the limit grooves 11 opened at both ends of the transmission shaft 2, thereby realizing automatic positioning and installation of the transmission shaft 2 and the connecting member 3, avoiding the loosening and falling off of the transmission shaft 2 and the connecting member 3 during use in the later stage. Finally, pulling the two levers 6 can drive the two limit seats 5 to separate from the two limit grooves 11. At this time, the transmission shaft 2 can be pulled out and reset, realizing quick disassembly and replacement of the transmission shaft 2 and the connecting member 3, and the operation is more time-saving and labor-saving.

[0035] The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. A fully electric retractable actuator for an aircraft landing gear, comprising an actuator body (1) and a transmission shaft (2), wherein the transmission shaft (2) is sealed and slidably mounted on the outside of the actuator body (1), and the diameter of the actuator body (1) is larger than the diameter of the transmission shaft (2); Its characteristics are: The outer end of the transmission shaft (2) is connected to a connecting piece (3), and the left side of the connecting piece (3) is hollow. The outer side of the actuator body (1) is penetrated and positioned by a positioning seat (4). The connecting member (3) has slots at both ends thereof through which a top plate (12) is slidably mounted. The two top plates (12) are in a "T" shape, and the tops of the two top plates (12) are fitted and connected to the limiting block (7).

2. The fully electric retraction actuator for aircraft landing gear according to claim 1, characterized in that: Limit blocks (7) are positioned and installed outside both ends of the transmission shaft (2), and the two limit blocks (7) are symmetrically arranged about the transverse center line of the transmission shaft (2).

3. The fully electric retraction actuator for aircraft landing gear according to claim 1, characterized in that: The outer sides of the two limit blocks (7) are slidably connected with a sliding groove (8), wherein the two sliding grooves (8) are symmetrically arranged on both sides of the interior of the connecting member (3).

4. The fully electric retraction actuator for aircraft landing gear according to claim 1, characterized in that: Return springs (13) are provided in grooves at both ends of the interior of the connecting member (3), and the two return springs (13) have the same structure, and the top ends of the two return springs (13) are connected to a top plate (12).

5. The fully electric retraction actuator for aircraft landing gear according to claim 4, characterized in that: The inner ends of the connecting member (3) are slotted to pass through the sliding mounting limit seats (5), and the inner ends of the two limit seats (5) are inclined, and the inner ends of the two limit seats (5) pass through the engaging connection limit slots (11), wherein the two limit slots (11) are symmetrically opened on the outer sides of the two ends of the transmission shaft (2).

6. The fully electric retraction actuator for aircraft landing gear according to claim 5, characterized in that: Baffles (9) are positioned and installed at the top ends of the two limiting seats (5), and the two baffles (9) have the same structure. The outer ends of the two baffles (9) are connected to both sides of the inner wall of the connecting member (3) through extrusion springs (10).

7. The fully electric retraction actuator for aircraft landing gear according to claim 6, characterized in that: The outer ends of the two limit seats (5) are mounted with shift rods (6) via screws, and the outer ends of the two shift rods (6) extend through the outer sides of both ends of the connecting member (3), and the two shift rods (6) are symmetrically arranged about the transverse center line of the connecting member (3).

Images