Supporting and protecting device for hydraulic actuator cylinder of undercarriage

Abstract

The utility model relates to the technical field of undercarriages, and discloses an undercarriage hydraulic actuator cylinder supporting and protecting device which comprises an undercarriage body, an outer cylinder is arranged on the right side of the undercarriage body, an inner cylinder is arranged in the outer surface of the outer cylinder and extends out of the outer cylinder, and a driving assembly is arranged on the outer surface of the inner cylinder. A connecting block is fixedly connected to the outer surface of the outer cylinder, a first groove is formed in the upper surface of the connecting block, a connecting plate is rotatably connected to the interior of the first groove through a shaft body, and a worker enables the inner cylinder to move towards the exterior of the outer cylinder, so that the supporting performance of the undercarriage body can be enhanced, and supporting points of the undercarriage body are increased; therefore, the purpose of dispersing loads is achieved, the supporting effect is improved, the overall stability of the device is improved, the service life of the device is prolonged, the safety of the device is improved, practicability is high, and the problem that some existing undercarriage hydraulic actuator cylinder supporting and protecting devices are insufficient in stability after being used for a long time is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of landing gears, in particular to a landing gear hydraulic actuator support and protection device. Background Art

[0002] The landing gear hydraulic actuator is a hydraulic device used to drive the extension and retraction of the aircraft landing gear. It consists of a hydraulic cylinder, a piston, a seal, and connecting pipes. The pressure of the hydraulic oil drives the piston to move, thereby achieving the extension and retraction of the landing gear. The landing gear hydraulic actuator plays a key role in the take-off and landing process of the aircraft, ensuring the safe and stable operation of the aircraft on the ground and in the air.

[0003] After consulting the literature, it is learned that the existing patent (publication number: CN215851861U) discloses a landing gear hydraulic actuator cylinder support and protection device, including an outer cylinder, the upper surface of the outer cylinder is convex, and an external tube is movably installed on the upper surface of the outer cylinder, and the external tube is fixedly connected to the external connecting tube; an inner tube, the inner tube is movably installed inside the outer cylinder, and a piston is fixedly installed on the side of the inner tube, and the side of the piston is in contact with the inner wall of the outer cylinder; including: a long pin, the long pin is fixedly installed on the upper surface of the clamping block; a fixed block, the fixed block is fixedly installed on the lower surface of the outer cylinder, and a connecting shaft is movably installed inside the fixed block.

[0004] Although the above-mentioned prior art moves the inner tube toward the outside of the outer tube, and the inner tube pulls the connecting shaft to rotate inside the fixed block through the wire rope, at this time the connecting shaft drives the support rod to rotate, and finally the support rod and the outer tube are in a vertical state, and the support rod plays a supporting role during operation, but in actual use, since there is only one supporting point between it and the landing gear, when the support rod is supported for a long time, it may cause wear of the support rod, resulting in a decrease in the supporting stability of the support rod, and it is impossible to provide effective support, and the practicality and safety are low. In view of this, we propose a landing gear hydraulic actuator cylinder support protection device to solve the above problems. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the utility model provides a landing gear hydraulic actuator cylinder support protection device, which solves the problem of insufficient stability of some existing landing gear hydraulic actuator cylinder support protection devices after long-term use.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a landing gear hydraulic actuating cylinder support and protection device, comprising a landing gear body, an outer cylinder is arranged on the right side of the landing gear body, an inner cylinder is arranged inside the outer surface of the outer cylinder, the inner cylinder extends out of the outer cylinder, a driving assembly is arranged on the outer surface of the inner cylinder, a connecting block is fixedly connected to the outer surface of the outer cylinder, a first groove is arranged on the upper surface of the connecting block, a connecting plate is rotatably connected to the inside of the first groove through an axle, a first receiving groove and a second receiving groove are respectively arranged on the upper and lower side surfaces of the connecting plate, a first side supporting plate is arranged inside the first receiving groove, and a second side supporting plate is arranged inside the second receiving groove. Two side support plates, both side surfaces of the connecting block are fixedly connected with the first fixed blocks, the interiors of the two first fixed blocks are set to be hollow, a second fixed block is fixedly connected between the connecting block and the first fixed block on the left, the interior of the second fixed block is hollow and communicates with the interior of the first fixed block on the left, both ends of the shaft body of the connecting plate are rotated to penetrate into the interior of the connecting block, a connecting assembly is provided on the outer surface of the left end of the shaft body of the connecting plate, two connecting rods are rotatably connected between the two first fixed blocks, the two ends of the two connecting rods are respectively rotated to penetrate into the interiors of the two first fixed blocks, and the first side support plate and the second side support plate are respectively fixedly connected to the outer surfaces of the two connecting rods.

[0009] Preferably, the connecting assembly includes a first bevel gear, which is sleeved on the outer surface of the connecting plate shaft at one end inside the connecting block. The interior of the second fixed block is rotatably connected with a rotating shaft, and both ends of the rotating shaft respectively rotate and penetrate into the interior of the connecting block and the interior of the first fixed block on the left.

[0010] Preferably, both ends of the rotating shaft are also sleeved with first bevel gears, the two first bevel gears located inside the connecting block are meshed and connected, and the outer surface of the first bevel gear inside the left first fixing block is meshed and connected with the second bevel gear.

[0011] Preferably, the second bevel gear is sleeved on the outer surface of the left end of the upper connecting rod.

[0012] Preferably, a first gear and a second gear are provided inside the first fixing block on the right side, and the first gear is sleeved on the outside of the upper connecting rod.

[0013] Preferably, the second gear is sleeved on the outside of the lower connecting rod, and the first gear is meshingly connected with the second gear.

[0014] Preferably, the drive assembly includes a first connecting ear, the first connecting ear is fixedly connected to the outer surface of the inner tube, the outer surface of the connecting plate is fixedly connected to the second connecting ear, and a steel wire rope is fixedly connected between the first connecting ear and the second connecting ear.

[0015] Preferably, a second groove is provided at the front end of the connecting plate, and a contact plate is rotatably connected to the interior of the second groove through an axis, and limiting grooves are provided on the inner walls on both sides of the second groove, and a limiting block is fixedly connected to the outer surface of the axis of the contact plate, and the limiting block is located inside the limiting groove and fits with the inner wall of the limiting groove.

[0016] (III) Beneficial effects

[0017] Compared with the prior art, the utility model provides a landing gear hydraulic actuator support protection device, which has the following beneficial effects:

[0018] 1. The landing gear hydraulic actuator cylinder support and protection device can achieve enhanced support performance for the landing gear body by allowing the staff to move the inner cylinder toward the outside of the outer cylinder, thereby increasing the support points with the landing gear body, thereby dispersing the load, thereby improving the support effect, improving the overall stability of the device, extending the service life of the device, and improving the safety of the device. It has high practicality and solves the problem of insufficient stability of some existing landing gear hydraulic actuator cylinder support and protection devices after long-term use.

[0019] 2. The landing gear hydraulic actuator support protection device increases the contact area between the connecting rod and the landing gear body by setting the contact plate, so that the contact plate is always in contact with the landing gear body as much as possible, and the contact plate can be limited by setting the limit groove and the limit block, thereby avoiding the contact plate from tipping over. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a landing gear hydraulic actuator support and protection device of the utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the outer cylinder of the utility model in a retracted state;

[0022] Figure 3 This is a schematic diagram of the structure of the outer cylinder of the utility model in the open state;

[0023] Figure 4 It is a structural schematic diagram of the connecting rod of the utility model;

[0024] Figure 5 This is a schematic cross-sectional structural diagram of the connection block of the utility model;

[0025] Figure 6 This is a schematic cross-sectional structural diagram of the first fixing block of the utility model;

[0026] Figure 7 It is a structural schematic diagram of the second groove of the utility model.

[0027] In the figure: 1, landing gear body; 2, outer tube; 3, connecting block; 4, first groove; 5, connecting plate; 6, first receiving groove; 7, second receiving groove; 8, first side support plate; 9, second side support plate; 10, first fixing block; 11, second fixing block; 12, connecting rod; 13, rotating shaft; 14, first bevel gear; 15, second bevel gear; 16, first gear; 17, second gear; 18, second groove; 19, contact plate; 20, wire rope; 21, inner tube; 22, first connecting ear; 23, second connecting ear; 24, limiting groove; 25, limiting block. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] See also Figure 1-Figure 7The utility model provides a technical solution: a landing gear hydraulic actuating cylinder support and protection device, comprising a landing gear body 1, an outer cylinder 2 is arranged on the right side of the landing gear body 1, an inner cylinder 21 is arranged inside the outer surface of the outer cylinder 2, the inner cylinder 21 extends out of the outer cylinder 2, a driving assembly is arranged on the outer surface of the inner cylinder 21, a connecting block 3 is fixedly connected to the outer surface of the outer cylinder 2, a first groove 4 is arranged on the upper surface of the connecting block 3, a connecting plate 5 is rotatably connected to the inside of the first groove 4 through an axle, a first receiving groove 6 and a second receiving groove 7 are respectively arranged on the upper and lower side surfaces of the connecting plate 5, a first receiving groove 6 is arranged inside the first receiving groove 6 Side support plate 8, a second side support plate 9 is arranged inside the second receiving groove 7, first fixed blocks 10 are fixedly connected to both side surfaces of the connecting block 3, the interiors of the two first fixed blocks 10 are arranged to be hollow, a second fixed block 11 is fixedly connected between the connecting block 3 and the first fixed block 10 on the left, the interior of the second fixed block 11 is hollow and communicates with the interior of the first fixed block 10 on the left, both ends of the shaft body of the connecting plate 5 are rotated to penetrate into the interior of the connecting block 3, a connecting assembly is arranged on the outer surface of the left end of the shaft body of the connecting plate 5, two connecting rods 12 are rotatably connected between the two first fixed blocks 10, and the two ends of the two connecting rods 12 are respectively The first side support plate 8 and the second side support plate 9 are respectively fixedly connected to the outer surfaces of the two connecting rods 12, and the staff makes the inner cylinder 21 move to the outside of the outer cylinder 2. At this time, the transmission of the driving assembly will drive the connecting plate 5 to rotate inside the first groove 4 through the shaft body, and then the transmission of the connecting assembly will drive the connecting rod 12 to rotate. The rotation of the connecting rod 12 will drive the first side support plate 8 and the second side support plate 9 to rotate, so that the first side support plate 8 and the second side support plate 9 are no longer located in the first storage groove 6 and the second storage groove 7. When the connecting plate 5 and the outer tube 2 are vertical, they can support the landing gear body 1. At the same time, the first side support plate 8 and the second side support plate 9 will rotate to contact the landing gear body 1. At this time, the support performance of the landing gear body 1 can be strengthened. The above structure increases the support points of the landing gear body 1, thereby dispersing the load, thereby improving the support effect, improving the overall stability of the device, extending the service life of the device, and improving the safety of the device. It has high practicality and solves the problem of insufficient stability of some existing landing gear hydraulic actuator support protection devices after long-term use.

[0030] Furthermore, the connecting assembly includes a first bevel gear 14, which is sleeved on the outer surface of the connecting plate 5 shaft at one end of the connecting block 3. The second fixed block 11 is rotatably connected with a rotating shaft 13. The two ends of the rotating shaft 13 are respectively rotated to penetrate the interior of the connecting block 3 and the interior of the first fixed block 10 on the left. The two ends of the rotating shaft 13 are also sleeved with a first bevel gear 14. The two first bevel gears 14 located inside the connecting block 3 are meshed and connected. The outer surface of the first bevel gear 14 inside the first fixed block 10 on the left is meshed and connected with a second bevel gear 15. The diameter of the second bevel gear 15 is smaller than that of the first bevel gear 14. The second bevel gear 15 is sleeved on the upper connecting rod 12 The left end outer surface of the connecting plate 5 is driven by the driving assembly to rotate with the shaft. At this time, the first bevel gear 14 fixedly connected to the shaft of the connecting plate 5 will rotate. The rotation of the first bevel gear 14 fixedly connected to the outer surface of the shaft of the connecting plate 5 will drive the first bevel gear 14 fixedly connected to the outer surface of the rear end of the rotating shaft 13 to rotate, thereby driving the rotation of the rotating shaft 13, and then the first bevel gear 14 fixedly connected to the front end of the rotating shaft 13 will rotate, and subsequently will drive the second bevel gear 15 to rotate. Since the diameter of the first bevel gear 14 is larger than that of the second bevel gear 15, the second bevel gear 15 will accelerate the rotation, and finally realize the rotation of the upper connecting rod 12.

[0031] Furthermore, a first gear 16 and a second gear 17 are provided inside the first fixed block 10 on the right side. The first gear 16 is sleeved on the outside of the upper connecting rod 12, and the second gear 17 is sleeved on the outside of the lower connecting rod 12. The first gear 16 and the second gear 17 are meshingly connected. The diameter of the first gear 16 is larger than the diameter of the second gear 17. The rotation of the upper connecting rod 12 drives the first gear 16 to rotate, and the rotation of the first gear 16 drives the second gear 17 to rotate in the opposite direction. The rotation of the second gear 17 drives the lower connecting rod 12 to rotate, thereby finally realizing the rotation of the first side support plate 8 and the second side support plate 9.

[0032] Furthermore, the driving component includes a first connecting ear 22, which is fixedly connected to the outer surface of the inner cylinder 21, and a second connecting ear 23 is fixedly connected to the outer surface of the connecting plate 5. A steel wire rope 20 is fixedly connected between the first connecting ear 22 and the second connecting ear 23, and moves toward the outside of the outer cylinder 2 through the inner cylinder 21, which drives the movement of the first connecting ear 22, and then drives the steel wire rope 20 to pull the second connecting ear 23, and then drives the connecting plate 5 to rotate, and finally realizes that the connecting plate 5 and the outer cylinder 2 are in a vertical state.

[0033] Furthermore, a second groove 18 is provided at the front end of the connecting plate 5, and a contact plate 19 is rotatably connected to the interior of the second groove 18 through an axis, and limiting grooves 24 are provided on the inner walls on both sides of the second groove 18. A limiting block 25 is fixedly connected to the outer surface of the axis of the contact plate 19, and the limiting block 25 is located inside the limiting groove 24 and fits with the inner wall of the limiting groove 24. The arrangement of the contact plate 19 increases the contact area between the connecting plate 5 and the landing gear body 1, so that the contact plate 19 is always fitted with the landing gear body 1 as much as possible, and the contact plate 19 can be limited by the arrangement of the limiting groove 24 and the limiting block 25, thereby avoiding the contact plate 19 from tipping over.

[0034] In the above embodiment, a pulley can be set on the surface of the connecting block 3, and the pulley and the wire rope 20 are in contact with each other to avoid direct contact between the wire rope and the connecting block 3 as much as possible, thereby improving the service life of the wire rope 20 and avoiding breakage or wear of the wire rope 20 as much as possible.

[0035] Working principle:

[0036] When the landing gear hydraulic actuator cylinder support protection device is in use, the staff moves the inner cylinder 21 toward the outside of the outer cylinder 2. At this time, the transmission of the driving assembly will drive the connecting plate 5 to rotate inside the first groove 4 through the shaft body, and then the transmission of the connecting assembly will drive the connecting rod 12 to rotate. The rotation of the connecting rod 12 will drive the first side support plate 8 and the second side support plate 9 to rotate, so that the first side support plate 8 and the second side support plate 9 are no longer located inside the first storage groove 6 and the second storage groove 7. When the connecting plate 5 and the outer cylinder 2 are vertical, they can support the landing gear body 1. At the same time, the first side support plate 8 and the second side support plate 9 will rotate to contact with the landing gear body 1, and the support performance of the landing gear body 1 can be enhanced.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A landing gear hydraulic actuator support and protection device, comprising a landing gear body (1), characterized in that: An outer tube (2) is arranged on the right side of the landing gear body (1), an inner tube (21) is arranged inside the outer surface of the outer tube (2), the inner tube (21) extends out of the outer tube (2), a driving assembly is arranged on the outer surface of the inner tube (21), a connecting block (3) is fixedly connected to the outer surface of the outer tube (2), a first groove (4) is arranged on the upper surface of the connecting block (3), a connecting plate (5) is rotatably connected to the inside of the first groove (4) through an axis, a first receiving groove (6) and a second receiving groove (7) are respectively arranged on the upper and lower side surfaces of the connecting plate (5), a first side support plate (8) is arranged inside the first receiving groove (6), a second side support plate (9) is arranged inside the second receiving groove (7), and both side surfaces of the connecting block (3) are fixedly connected to the second receiving groove (7). A fixed block (10), wherein the interiors of the two first fixed blocks (10) are both arranged to be hollow, a second fixed block (11) is fixedly connected between the connecting block (3) and the first fixed block (10) on the left, the interior of the second fixed block (11) is hollow and communicates with the interior of the first fixed block (10) on the left, both ends of the shaft of the connecting plate (5) are rotatably inserted into the interior of the connecting block (3), a connecting assembly is arranged on the outer surface of the left end of the shaft of the connecting plate (5), two connecting rods (12) are rotatably connected between the two first fixed blocks (10), the two ends of the two connecting rods (12) are respectively rotatably inserted into the interiors of the two first fixed blocks (10), and the first side support plate (8) and the second side support plate (9) are respectively fixedly connected to the outer surfaces of the two connecting rods (12).

2. A landing gear hydraulic cylinder support and protection device according to claim 1, characterized in that: The connecting assembly comprises a first bevel gear (14), the first bevel gear (14) being sleeved on the outer surface of the shaft of the connecting plate (5) at one end inside the connecting block (3), the interior of the second fixed block (11) being rotatably connected with a rotating shaft (13), the two ends of the rotating shaft (13) respectively rotatably passing through the interior of the connecting block (3) and the interior of the first fixed block (10) on the left side.

3. A landing gear hydraulic cylinder support and protection device according to claim 2, characterized in that: The two ends of the rotating shaft (13) are also sleeved with first bevel gears (14), the two first bevel gears (14) located inside the connecting block (3) are meshed and connected, and the outer surface of the first bevel gear (14) inside the left first fixed block (10) is meshed and connected with a second bevel gear (15).

4. A landing gear hydraulic cylinder support and protection device according to claim 3, characterized in that: The second bevel gear (15) is sleeved on the outer surface of the left end of the upper connecting rod (12).

5. A landing gear hydraulic actuator support and protection device according to claim 4, characterized in that: A first gear (16) and a second gear (17) are arranged inside the first fixing block (10) on the right side, and the first gear (16) is sleeved on the outside of the upper connecting rod (12).

6. A landing gear hydraulic cylinder support and protection device according to claim 5, characterized in that: The second gear (17) is sleeved on the outside of the lower connecting rod (12), and the first gear (16) and the second gear (17) are meshed and connected.

7. A landing gear hydraulic actuator support and protection device according to claim 2, characterized in that: The driving assembly comprises a first connecting ear (22), the first connecting ear (22) is fixedly connected to the outer surface of the inner tube (21), the outer surface of the connecting plate (5) is fixedly connected to a second connecting ear (23), and a steel wire rope (20) is fixedly connected between the first connecting ear (22) and the second connecting ear (23).

8. A landing gear hydraulic actuator support and protection device according to claim 7, characterized in that: The front end of the connecting plate (5) is provided with a second groove (18), the interior of the second groove (18) is rotatably connected to a contact plate (19) via an axle, both inner walls of the second groove (18) are provided with limiting grooves (24), the outer surface of the axle of the contact plate (19) is fixedly connected to a limiting block (25), and the limiting block (25) is located inside the limiting groove (24) and fits the inner wall of the limiting groove (24).

Images