CN111392059B - A landing gear quick moving device and use method - Google Patents
A landing gear quick moving device and use method Download PDFInfo
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- CN111392059B CN111392059B CN202010367546.6A CN202010367546A CN111392059B CN 111392059 B CN111392059 B CN 111392059B CN 202010367546 A CN202010367546 A CN 202010367546A CN 111392059 B CN111392059 B CN 111392059B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F1/00—Ground or aircraft-carrier-deck installations
- B64F1/22—Ground or aircraft-carrier-deck installations for handling aircraft
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Abstract
本发明创造提供了一种起落架的快速搬移设备及使用方法，包括车架体、升降底板、后拉杆和用于车架体转动方向的转向架；车架体前侧安装有转向架；车架体底部前端安装有若干万向轮，后端安装有若干承重轮；所述车架体上安装有一第一驱动单元；第一驱动单元的输出端可拆卸固定连接后拉杆，后拉杆与车架体所围成的封闭区域内安装所述升降底板；所述升降底板可自靠近后拉杆一端向上向靠近转向架一侧转动；升降底板上安装有第一挡板；所述后拉杆靠近转向架一侧安装有两个可调托架。本发明创造所述的起落架的快速搬移设备，可以将飞机快速脱离跑道，以缩短航空器在跑道上的滞留时间，快速、有效的恢复机场的正常航班秩序。
The invention provides a landing gear rapid moving device and a method of using the device, including a frame body, a lifting floor, a rear tie rod and a bogie for the rotation direction of the frame body; the bogie is installed on the front side of the frame body; a plurality of universal wheels are installed at the front end of the bottom of the frame body, and a plurality of load-bearing wheels are installed at the rear end; a first drive unit is installed on the frame body; the output end of the first drive unit is detachably fixedly connected to the rear tie rod, and the lifting floor is installed in the closed area surrounded by the rear tie rod and the frame body; the lifting floor can rotate upward from one end close to the rear tie rod to the side close to the bogie; a first baffle is installed on the lifting floor; two adjustable brackets are installed on the side of the rear tie rod close to the bogie. The invention creates the landing gear rapid moving device, which can quickly get the aircraft off the runway to shorten the aircraft's stay time on the runway and quickly and effectively restore the normal flight order of the airport.
Description
Technical Field
The invention belongs to the field of aircraft rescue equipment, and particularly relates to quick moving equipment of an undercarriage and a using method thereof.
Background
In the process of landing runways of aircrafts, the aircrafts cannot move due to the fact that the landing gear tires burst, air leakage and tire locking, so that the residence time of the aircrafts on the runways is long, and the normal flight order is affected. Therefore, there is an urgent need for a moving apparatus that can shorten the residence time of an aircraft on a runway, and quickly and effectively restore the normal flight order of an airport.
Disclosure of Invention
Therefore, the invention aims to provide a quick moving device of landing gear, which can quickly separate an aircraft from a runway so as to shorten the residence time of the aircraft on the runway and quickly and effectively recover the normal flight order of the airport.
In order to achieve the above purpose, the technical scheme of the invention is realized as follows:
a quick moving device of undercarriage comprises a frame body, a lifting bottom plate, a rear pull rod and a bogie for the rotation direction of the frame body;
The frame body is 冂 -shaped, and the bogie is arranged on the front side of the frame body; the front end of the bottom of the frame body is provided with a plurality of universal wheels, and the rear end is provided with a plurality of bearing wheels; the frame body is provided with a first driving unit, and the output end of the first driving unit can extend out of the frame body backwards; the output end of the first driving unit is detachably and fixedly connected with a rear pull rod, and the lifting bottom plate is arranged in a closed area surrounded by the rear pull rod and the frame body;
the lifting bottom plate can rotate upwards from one end close to the rear pull rod to one side close to the bogie; a first baffle is arranged on the lifting bottom plate;
Two adjustable brackets are arranged on one side of the rear pull rod, which is close to the bogie, and correspond to the mounting positions of the first baffle; the distance between the two adjustable brackets is adjustable; a landing gear wheel clamping part is arranged between the two adjustable brackets and the first baffle;
and a traction rod is arranged at the front side of the bogie.
Further, the bogie is rotatably connected to the front side of the frame body; the front ends of the two sides of the bogie are respectively connected with two universal wheel steering arms positioned at the two ends of the front side through steering rods, and the rear ends of the bogie are respectively connected with the frame body through second driving units; the front end of the bogie is detachably provided with a traction rod.
Further, the two steering rods are arranged in an eight shape; the uniform ends of the two steering rods are hinged with the steering frame, and the other ends of the two steering rods are connected with universal wheel steering arms at two ends of the front side of the frame body; the second driving unit is a hydraulic cylinder, an air cylinder or an electric cylinder; the output end of the second driving unit is connected with the bogie, and the second driving unit is fixed on the frame body.
Furthermore, the bogie, the connecting points of the two front universal wheels, the two steering rods and the frame body form a trapezoid steering mechanism.
Further, the lifting bottom plate comprises a first plate and a second plate; the first plate and the second plate are detachably and fixedly connected, and a first baffle is arranged on the upper surface of the first plate or the upper surface of the second plate or the upper surface of the joint of the first plate and the second plate; the first plate or the second plate is connected with two sides of the frame body through revolute pairs, and a lifting unit is arranged on the lower surface of one side, close to the rear pull rod, of the second plate.
Further, the first plate and the second plate are connected through bolts; the outer ends of the support shafts are inserted into support shaft seats on the frame body and are in rotary connection with the support shaft seats; two integrally upward protruding parts are arranged at one end, close to the rear pull rod, of the second plate, and the lower surfaces of the protruding parts are connected with the output end of the lifting unit; the lifting unit is mounted on the first driving unit.
Further, the frame body comprises a front end frame, a left side frame and a right side frame, and the left side frame and the right side frame are connected with the front end frame through bolts.
Further, the first driving unit is a load sensitive hydraulic system; the first driving unit comprises a hydraulic system cabin, a hydraulic operating platform and two oil cylinders; the left side frame and the right side frame of the frame body are of box structures, a hydraulic system cabin is arranged in the left side frame, and a hydraulic operating platform is arranged in the right side frame; the two oil cylinders are respectively arranged on the inner sides of the left side frame and the right side frame, and the piston rods of the oil cylinders are connected with telescopic pull rods; the telescopic pull rod is positioned above the piston rod connected with the telescopic pull rod, and the telescopic pull rod and the piston rod are arranged in parallel.
Further, the lifting bottom plate is arranged between the two oil cylinders; the ends of the two telescopic pull rods are detachably connected with the rear pull rod, the inner side surfaces, close to the ends, of the piston rods of the two oil cylinders are respectively provided with a supporting leg oil cylinder, and the bottoms of the supporting leg oil cylinders are provided with directional wheels.
Further, the adjustable bracket is arranged on the rear pull rod through a screw rod, and the distance between the adjustable bracket and the first baffle plate can be adjusted through adjusting the screw rod; the rear pull rod is provided with a lifting support leg; and the frame body is provided with a parallel connection port.
Another object of the invention is to provide a method for using a quick-moving device for landing gear as described above, which allows the movement of the main landing gear 4-wheel and 6-wheel landing gear.
A method of using a quick-move device for landing gear as described above, the method comprising: after the rear pull rod is removed, the opening sides of the frame bodies of the two quick moving devices of the landing gear are oppositely arranged and connected, so that the damaged landing gear is positioned on the lifting bottom plates of the two quick moving devices of the landing gear, and the damaged landing gear is jointly moved.
Preferably, the method for locating a damaged landing gear on the lifting floor of the quick-moving device of two said landing gears comprises the following steps:
(1) The quick moving equipment of the two landing gears is pulled to the damaged landing gear, the lifting bottom plate is lowered to the lowest position, and the telescopic pull rod extends out to the maximum position, so that the damaged landing gear is positioned in an area surrounded by the telescopic pull rods of the quick moving equipment of the two landing gears;
(2) Extending the telescopic pull rods of the quick moving equipment of the two landing gears to a certain position, and detachably connecting the telescopic pull rods of the quick moving equipment of the two landing gears together;
(3) The telescopic pull rod of the quick moving device of one landing gear is retracted, and the damaged landing gear is shoveled onto the lifting bottom plates of the quick moving devices of the two landing gears;
(4) The telescopic pull rod of the quick moving device of the landing gear in the step (3) is retracted to the minimum position;
(5) And (3) starting the lifting unit of the quick-moving device of the landing gear in the step (3), and lifting the second plate to the highest position so that the damaged landing gear is placed on the lifting bottom plates of the two quick-moving devices of the landing gear.
Compared with the prior art, the quick moving equipment of the landing gear has the following advantages:
(1) The quick moving equipment of the landing gear can quickly separate an aircraft from a runway so as to shorten the residence time of the aircraft on the runway and quickly and effectively recover the normal flight order of the airport.
(2) The invention creates the quick moving equipment of the landing gear, the front side and the rear side of the lifting bottom plate are rotationally connected, and the rear side is provided with the lifting unit.
(3) The quick moving equipment for the landing gear has the advantages that the upper and lower parts of the oil cylinder and the telescopic pull rod can be fixed in length, and compared with the oil cylinder and the telescopic pull rod which are on the same line, the quick moving equipment is larger in extension.
(4) The quick moving equipment of the landing gear adopts the trapezoidal steering mechanism, and is flexible and reliable in steering.
(5) The quick moving equipment of the landing gear is mainly suitable for quick moving when the front landing gear wheel axle set and the main landing gear burst, leak and lock of the tire.
The usage method of the quick-moving device of the landing gear is basically the same as that of the quick-moving device of the landing gear in the prior art, and is not repeated here.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and do not constitute an undue limitation on the invention. In the drawings:
FIG. 1 is a perspective view of a quick-release equipment telescoping pull rod for landing gear in a fully retracted state according to an illustrative embodiment of the present invention;
FIG. 2 is a perspective view of an angle of extension of a telescoping pull rod of a quick-release device for landing gear according to an embodiment of the present invention;
FIG. 3 is a perspective view of another angle of extension of a telescoping pull rod of a quick-release device for landing gear according to an embodiment of the present invention;
FIG. 4 is a perspective view of a lifting base plate;
FIG. 5 is a perspective view of a quick-move landing gear apparatus according to an embodiment of the present invention without the drawbar and lifting floor portion;
FIG. 6 is a block diagram of a lifting floor and frame body of a quick-move landing gear without a drawbar according to an illustrative embodiment of the present invention;
FIG. 7 is a block diagram of a quick-move apparatus for landing gear without a drawbar and a rear drawbar according to an embodiment of the present invention;
FIG. 8 is a block diagram of the telescopic boom and cylinder sections;
FIG. 9 is a schematic diagram of the operation of the cylinder and telescoping pull rod;
FIG. 10 is a block diagram of a truck site;
FIG. 11 is a schematic diagram of the operation of the trapezoidal steering mechanism;
FIG. 12 is a first state diagram of a quick-move landing gear apparatus according to an embodiment of the present invention for use with a two-wheeled damaged landing gear bicycle;
FIG. 13 is a second state diagram of a quick-move landing gear apparatus according to an embodiment of the present invention for use with a two-wheeled damaged landing gear bicycle;
FIG. 14 is a third state diagram of a landing gear quick-move device according to an embodiment of the present invention for use with a two-wheeled damaged landing gear bicycle;
FIG. 15 is a fourth state diagram of a quick-move landing gear apparatus according to an embodiment of the present invention for use with a two-wheeled damaged landing gear bicycle;
FIG. 16 is a fifth state diagram of a quick-move landing gear apparatus according to an embodiment of the present invention for a two-wheeled damaged landing gear bicycle (i.e., a state diagram in which the damaged landing gear is fully moved onto the lifting floor);
FIG. 17 is a first state diagram of a quick-move landing gear apparatus according to an embodiment of the present invention for use with six-wheeled damaged landing gear in parallel;
FIG. 18 is a second state diagram of a quick-move landing gear apparatus according to an embodiment of the present invention for use with six-wheeled damaged landing gear in parallel;
FIG. 19 is a third state diagram of a quick-move landing gear apparatus according to an embodiment of the present invention for use with six-wheeled damaged landing gear in parallel;
FIG. 20 is a fourth state diagram of a quick-move landing gear apparatus according to an embodiment of the present invention for use with six-wheeled damaged landing gear in parallel;
FIG. 21 is a fifth state diagram of a quick-move landing gear apparatus according to an embodiment of the present invention for use with six-wheeled damaged landing gear in parallel;
FIG. 22 is a sixth state diagram of a quick-move landing gear apparatus according to an embodiment of the present invention for use with a six-wheeled damaged landing gear;
FIG. 23 is a seventh state diagram of a quick-move landing gear apparatus according to an embodiment of the present invention for use with six-wheeled damaged landing gear in parallel;
fig. 24 is a state diagram of a quick-moving device for landing gear according to an embodiment of the present invention when the landing gear is used for four-wheel damaged landing gear in parallel.
Reference numerals illustrate:
1-a frame body; 101-front end frame; 102-left side frame; 103-right side frame; 101-a hydraulic system compartment; 2-lifting the bottom plate; 201-a first plate; 202-a second plate; 2021-boss; 3-a rear pull rod; 4-a bogie; 5-universal wheels; 6-a first drive unit; 601-a hydraulic system compartment; 602-a hydraulic console; 603-an oil cylinder; 604-a piston rod; 605-a hinged support; 7-a first baffle; 8-a lifting unit; 9-an adjustable bracket; 10-landing gear wheel engagement; 11-a traction rod; 12-a steering rod; 13-a second drive unit; 14-arc-shaped clamping jaws; 15-clamping a connecting rod; 16-fulcrum; 17-a fulcrum seat; 18-a telescopic pull rod; 19-a landing leg oil cylinder; 20-orienting wheels; 21-parallel operation connectors; 22-damaged landing gear; 23-lifting support legs; 24-a first pin shaft; 25-a second pin shaft; 26-front universal wheel connection point; 27-a frame shaft; 28-universal wheel steering arms; 29-first landing gear fast moving equipment; 30-a second landing gear quick-move device; 31-a lead screw; 32-bearing wheels.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other.
In the description of the invention, it should be understood that the terms "center," "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships that are based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the invention and simplify the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be configured and operate in a particular orientation, and therefore should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the creation of the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1 to 3 and 5 to 7, a quick-moving apparatus of landing gear includes a frame body 1, a lifting floor 2, a rear stay 3, and a bogie 4 for the rotational direction of the frame body 1; the whole frame of the frame body 1 is formed by welding high-strength sectional materials, the left main body structure and the right main body structure adopt symmetrical structures, and the whole structure is 冂 -shaped. The bogie 4 is arranged on the front side of the frame body 1, so that the whole frame body can be conveniently turned, the traction rod 11 is arranged on the front side of the bogie 4, the traction rod is preferably in a detachable structure, and when traction is needed, a front vehicle is arranged on the traction rod for traction operation; and the traction rod is detached during the parallel operation. In order to facilitate the movement of the frame body, a plurality of universal wheels 5 are installed at the front end of the bottom of the frame body 1, a plurality of bearing wheels 32 are installed at the rear end, for example, one universal wheel can be installed at each side of the front end of the frame body (namely, the front side frame front end mentioned later), and one bearing wheel 32 is installed at each side of the rear end of the frame body (namely, the rear ends of the left side frame and the right side frame mentioned later). The frame body 1 is provided with a first driving unit 6, and the output end of the first driving unit 6 can extend out of the frame body 1 backwards to draw the damaged landing gear onto the lifting bottom plate 2 in the frame body. The output end of the first driving unit 6 is detachably and fixedly connected with the rear pull rod 3, and one side of the rear pull rod 3 can be opened or integrally removed from the frame body when the rear pull rod is convenient to use. The lifting bottom plate 2 is installed in a closed area surrounded by the rear pull rod 3 and the frame body 1, and specifically, the lifting bottom plate 2 needs to be installed in an inner bottom area of the frame body frame. The lifting bottom plate 2 can rotate upwards from one end close to the rear pull rod to the side close to the bogie 4, and the damaged landing gear is moved into the frame body when the lifting bottom plate is convenient to use, but in order to limit the placement position of the damaged landing gear on the lifting bottom plate in the frame body, a first baffle 7 is arranged on the lifting bottom plate 2; two adjustable brackets 9 are arranged on one side of the rear pull rod 3, which is close to the bogie 4, the two adjustable brackets 9 correspond to the mounting positions of the first baffle plate 7, and a landing gear wheel clamping part 10 is arranged between the adjustable brackets 9 and the first baffle plate 7. Meanwhile, in order to adapt to the difference of wheelbases of two wheels of different models, different models are moved, and the distance between two adjustable brackets 9 is designed to be in an adjustable mode. Specifically, the following structure may be adopted: a screw rod 31 is arranged on one side of the rear pull rod 3, which is close to the lifting bottom plate 2, along the width direction of the frame body, and two adjustable brackets 9 are arranged on the screw rod at certain intervals, so that the two adjustable brackets 9 are ensured to be opposite to the center of gravity of the wheel surface of the damaged landing gear to be moved. Thus, the distance between the two adjustable brackets 9 can be adjusted by adjusting the lead screw so as to adapt to the model of different wheelbases. It should be noted that the structure of the adjustable bracket is not limited, and a better structure is shown in fig. 3, and one side of the adjustable bracket, which is close to the first baffle 7, may be arc-shaped and be composed of a plurality of rollers arranged in parallel up and down. Further, the rear tie rod 3 is mounted with a lifting leg 23. The rear tie rod mainly pulls the damaged landing gear to the lifting base plate.
As an alternative embodiment of the present invention, the frame body 1 adopts a spliced structure, which includes a front end frame 101, a left side frame 102 and a right side frame 103, and the left side frame 102 and the right side frame 103 are connected with the front end frame by bolts.
In the invention, the first driving unit 6 adopts a load sensitive hydraulic system, and outputs small in the time of small demand and large in the time of large demand according to the load output hydraulic demand. More specifically, the first drive unit 6 includes a hydraulic system tank 601, a hydraulic operation table 602, and two cylinders 603; the left side frame 102 and the right side frame 103 of the frame body 1 are both in box structures, a hydraulic system cabin 601 is arranged in the left side frame 102, and a hydraulic operating platform 602 is arranged in the right side frame 103; two cylinders 603 are respectively installed on the inner sides of the left side frame 102 and the right side frame 103 through hinged supports 605, a hydraulic system cabin 601, a hydraulic operating platform 602 and the two cylinders 603 are connected together through hydraulic pipelines, and the movements of the cylinders can be controlled through the hydraulic operating platform 602. The piston rod of the cylinder 603 is connected with a telescopic pull rod 18, and the specific connection mode may be that the end of the piston rod 604 is fixedly connected with the telescopic pull rod 18 through a connecting rod by a first pin 24, so that the telescopic pull rod 18 is located above the connected piston rod, and the two are arranged in parallel (as shown in fig. 8 and 9). When the damaged landing gear is rescued, the rear pull rod is opened, the telescopic pull rod is stretched to the tail part (the front part of the vehicle head) of the wheel through the control valve on the hydraulic operation table 602, and the damaged landing gear wheel of the aircraft is pulled to the lifting bottom plate through the oil cylinder after the rear pull rod is connected.
Wherein the lifting base plate 2 is arranged between the two cylinders 603; the two telescopic pull rods 18 are detachably connected with the rear pull rod 3 near one end of the rear pull rod, and can be connected through a quick pin shaft.
As an alternative implementation mode of the invention, the inner side surfaces of the piston rods of the two cylinders 603 close to the end parts are respectively provided with a supporting leg cylinder 19, the bottoms of the supporting leg cylinders 19 are provided with a directional wheel 20 (shown in figure 7), when the telescopic pull rod stretches out far, one end of the telescopic pull rod far away from the cylinders is sunk downwards, and because the cylinders and the telescopic pull rod are not on the same axis, moment can be generated, the supporting cylinders and the directional wheels have the functions of ensuring the telescopic pull rod to be horizontal all the time, and the telescopic pull rod is labor-saving.
As an alternative embodiment of the invention, the bogie 4 is rotatably connected to the front side of the frame body 1 through a frame body shaft 27; the front ends of the two sides of the bogie 4 are respectively connected with the frame body 1 through a second driving unit 13 and two universal wheel steering arms 28 which are respectively positioned at the two ends of the front side of the frame body through steering rods 12; the front end of the bogie 4 is detachably provided with a traction rod 11. More specifically, the two steering levers 12 are arranged in an "eight" shape; both steering rods 12 are hinged at one end to the bogie 4 and at the other end are connected (rotationally connected or hinged) to the upper ends of the universal wheel steering arms 28 at both front ends of the frame body, as shown in fig. 10, one steering rod being connected to the left front end of the bogie and the universal wheel steering arm of the universal wheel at the left side of the front end of the frame body (i.e., the front left end of the front side frame), and the other steering rod being connected to the right front end of the bogie and the universal wheel steering arm of the universal wheel at the right side of the front end of the frame body (i.e., the front right end of the front side frame). The bogie 4, the two front universal wheel connection points 26, the two steering rods 12 and the frame body 1 (specifically, the front frame of the frame body) form a trapezoidal steering mechanism (as shown in fig. 10). The universal wheels are arranged on the frame body through the universal wheel steering arms 28, and the two universal wheels positioned on the front side can meet the front bearing and steering of the rapid moving equipment of the landing gear, and the principle diagram of the trapezoidal steering mechanism is shown in fig. 11.
In the present invention, the second drive unit 13 may be a hydraulic cylinder in some embodiments, and a pneumatic cylinder or an electric cylinder in other embodiments, but a hydraulic cylinder is preferred here. In particular, the connection to the second drive unit 13 with the bogie 4 and the frame body 1 may be that an output end (such as a piston rod) of the second drive unit 13 is connected with the bogie 4, and a body (such as a cylinder body) of the second drive unit 13 is fixed on the frame body 1. When the steering operation is performed, the second driving unit performs telescopic movement, and then drives the bogie to rotate and swing around the bogie body shaft 27, and meanwhile, the steering rod 12 connected to the bogie body and the bogie rotates along with the rotation, so that the wheels (namely, universal wheels) are driven to steer.
In the invention, the lifting bottom plate is not limited in structure, and the lifting bottom plate can be arranged in a structure mode that a plurality of plates are spliced and fixed into one plate for convenient transportation. An alternative embodiment may be: as shown in fig. 4, 1 and 6, the lifting base plate 2 comprises a first plate 201 and a second plate 202; the first plate 201 and the second plate 202 are detachably connected, and the first baffle 7 is installed on the upper surface of the first plate 201 or the upper surface of the second plate 202 or the upper surface of the joint of the first plate 201 and the second plate 202, and the installation position of the first baffle is determined according to the model. The first plate 201 or the second plate 202 is connected with two sides of the frame body 1 (namely, the left frame body and the right frame body) through a revolute pair, and a lifting unit 8 is arranged on the lower surface of one side of the second plate 202, which is close to the rear pull rod 3.
More specifically, regarding the connection manner of the first plate 201 and the second plate 202, an alternative connection structure is: the first plate 201 and the second plate 202 are of U-shaped structures with flat bottoms, vertical parts of the first plate 201 and the second plate 202 are connected through bolts, support shafts 16 are arranged on two sides of the first plate 201 or the second plate 202, the outer side end parts of the two support shafts 16 are inserted into support shaft seats 17 on the frame body and are connected with the support shaft seats 17 in a rotating mode, and the two support shafts are coaxial.
In order to realize the lifting base plate rotatable from the end close to the rear tie rod to the side close to the bogie 4, the lifting unit 8 may be mounted as follows: two integrally upward protruding parts 2021 are arranged at one end of the second plate 202 close to the rear pull rod 3, and the protruding parts can be integrally formed with the second plate or can be fixedly connected to the surface of the second plate in a split manner, meanwhile, the protruding parts are hollow shell-shaped, and the lower surface of the protruding parts 2021 is connected with the output end of the lifting unit 8; the lifting unit 8 is mounted on the first drive unit 6, in particular fixedly connected to the mounting frame of the cylinder by means of a second pin 25. When the damaged landing gear is pulled to the lifting bottom plate through the rear pull rod, the tail part (the second plate) of the lifting bottom plate is lifted off the ground around the support shaft under the action of the jacking oil cylinder by controlling the lifting unit, so that the damaged landing gear can be moved to one side of the lifting bottom plate, which is close to the bogie.
Preferably, the lifting unit 8 may be a lifting cylinder, an air cylinder or an electric cylinder, but a lifting cylinder may be preferably used. Meanwhile, in order to prevent the lifting bottom plate from turning on one's side, the front end of the first plate 201 is provided with a plurality of arc-shaped claws 14, and the arc-shaped claws can be arranged into an anti-tilting structure which tilts from one side close to the bogie to one side close to the rear pull rod from top to bottom. The number of the arc-shaped clamping claws 14 can be set according to the requirement, 2 arc-shaped clamping claws are arranged in the invention, and the 2 arc-shaped clamping claws are arranged at a certain interval.
In addition, as shown in fig. 1, the frame body 1 is provided with a parallel connection port 21, which is used for simultaneously controlling two vehicles to work through any vehicle hydraulic system when the two vehicles work in parallel.
It should be noted that, when the lifting unit 8 and the second driving unit 13 are cylinders, they may be connected to the hydraulic system chamber 601 and the hydraulic console 602 through hydraulic lines, and the movement of the cylinders may be controlled by the hydraulic console 602.
When the quick-moving device of the landing gear is used, the damaged landing gear can be moved by the quick-moving device of the landing gear, and the quick-moving device can be used by a bicycle or used by a parallel bicycle.
When the bicycle is used, the method is generally applicable to two-wheel damaged landing gear, taking the two-wheel damaged landing gear moving as an example, the following steps can be adopted:
1) Pulling (a traction rod is not shown) the quick-moving device of the landing gear to the lower part of the damaged landing gear 22, the lifting bottom plate 2 is dropped, and the rear pull rod 3 is opened (see figure 12);
2) Closing the rear pull rod 3, and starting the oil cylinders 603 at the two ends to pull the damaged landing gear to the lifting base plate 2 (see fig. 13);
3) The damaged landing gear is transferred to a proper position of the lifting bottom plate 2, and the landing gear is fixed by using the first baffle 7 (if necessary, the landing gear can be bound and fixed by using a fastener) (see fig. 14);
4) The lifting unit 8 is activated to raise the second plate 202 (see fig. 15), so that the whole movement of the damaged landing gear to the lifting floor 2 is achieved (see fig. 16).
When the vehicle is used in parallel, the moving of the damaged landing gear of the main landing gear 4 wheels and the damaged landing gear of the main landing gear 6 wheels is taken as an example, and the specific moving method comprises the following steps:
(1) Opening the quick pin between the tail of the rear pull rod and the telescopic pull rod of the quick moving device (for convenience of description, the quick moving device is marked as a first landing gear quick moving device 29 and a second landing gear quick moving device 30) for creating two landing gears, and removing the rear pull rod through a moving trolley and a tail lifting supporting leg 23 (see figure 17);
(2) Pulling the quick-moving equipment of the two landing gears to the damaged landing gear 22 (see figure 18), lowering the lifting bottom plate 2 to the lowest position, and extending the telescopic pull rod 18 to the maximum position, so that the damaged landing gear 22 is positioned in an area surrounded by the telescopic pull rods 18 of the quick-moving equipment of the two landing gears (see figure 19);
(3) Extending the telescopic pull rods 18 of the quick moving equipment of the two landing gears to a certain position, and detachably and fixedly connecting the telescopic pull rods 18 of the quick moving equipment of the two landing gears together through quick bolts (see figure 20);
(4) One of the landing gear quick-moving devices (such as the second landing gear quick-moving device 30) is retracted by the telescopic pull rod 18, and the damaged landing gear 22 is shoveled onto the lifting base plates 2 of the two landing gear quick-moving devices (see fig. 21);
(5) The telescopic boom 18 of the second landing gear quick travel device 30 is retracted to the minimum position (see fig. 22);
(6) The lifting unit 8 of the second landing gear quick-moving device 30 is activated to raise the second plate 202 to the highest position, so that the damaged landing gear 22 is placed on the lifting floor 2 of both said landing gear quick-moving devices (see fig. 23).
(7) The damaged landing gear 22 is moved by a mobile device with a tow bar.
In the case of a damaged landing gear of the main landing gear 4 wheels and a vehicle move, the state diagram is shown in fig. 24.
It should be noted that, when the vehicle is used in parallel, it is preferable to remove the traction rod on the quick-moving device of one of the landing gear.
In summary, the invention creates the rapid moving equipment of the landing gear, which structurally has the following characteristics: a frame body structure, which is designed in a split type; the first driving unit adopts a hydraulic system and is distributed in a split type; the lifting mechanism adopts a lever type lifting mechanism, the dumpling shaft is arranged in the middle, the lifting is more labor-saving, and the lifting mechanism is also provided with an anti-toppling structure; the tensioning mechanism is designed, the oil cylinder and the telescopic pull rod are distributed up and down, and the extension amount is larger when the vehicle length is fixed compared with that of the oil cylinder and the piston rod on the same line; the structure design of the arm (namely the rear pull rod) can be inclined and can be adjusted left and right; trapezoidal steering mechanism: the steering is flexible and reliable; the parallel operation design can meet the requirement of the movement of the main landing gear of a large-scale airplane such as A380.
The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
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| CN112158351B (en) * | 2020-09-21 | 2023-06-20 | 航大联合航空设备有限公司 | Trailer system for undercarriage moving |
| CN112390203A (en) * | 2020-11-20 | 2021-02-23 | 中安（天津）航空设备有限公司 | Module wheel-holding mechanism |
| CN112722312B (en) * | 2021-02-09 | 2021-08-13 | 中国民航大学 | A kind of aircraft substitute wheel emergency rescue vehicle and emergency rescue method |
| CN114476112A (en) * | 2021-12-29 | 2022-05-13 | 北京特种机械研究所 | Unmanned aerial vehicle warehousing and transportation launch integrated device |
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| US8967939B2 (en) * | 2006-10-13 | 2015-03-03 | Hammonds Technical Services, Inc. | Aircraft transporter dolly with hinged gate for moving aircraft |
| US8985613B2 (en) * | 2012-12-07 | 2015-03-24 | Daniel J. McElroy | Aircraft towbar with rapid wheel deployment and method for efficiently moving aircraft therewith |
| CN104071345A (en) * | 2014-07-04 | 2014-10-01 | 中国民航大学 | Front undercarriage carrying trailer for damaged aircraft |
| CN108860648B (en) * | 2018-07-11 | 2024-06-28 | 中安（天津）航空设备有限公司 | A remove device for main undercarriage in aviation field |
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