CN211692281U - A330 series aircraft wheel cabin and undercarriage maintenance work ladder - Google Patents
A330 series aircraft wheel cabin and undercarriage maintenance work ladder Download PDFInfo
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- CN211692281U CN211692281U CN201922107127.4U CN201922107127U CN211692281U CN 211692281 U CN211692281 U CN 211692281U CN 201922107127 U CN201922107127 U CN 201922107127U CN 211692281 U CN211692281 U CN 211692281U
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Abstract
The utility model provides a A330 series aircraft wheel well and undercarriage maintenance work ladder, it includes: the ladder frame comprises an underframe and a top frame, the underframe is a horizontally-laid door-shaped frame consisting of a door head and two legs, universal wheels are arranged at the bottom of the underframe, the top frame is a portal frame with two legs fixedly connected to the two legs on the top surface of the underframe respectively, and an inclined ladder stand is arranged between the middle part of the door head of the underframe and the edge of one side of the top frame corresponding to the middle part of the door head of the underframe; the lifting platform is corresponding to the entrance of the wheel cabin of the A330 series airplane in size, the bottom of the lifting platform is connected with the top frame of the ladder frame through two scissor arms to realize lifting, a straight ladder is fixedly arranged at the position corresponding to the inclined ladder of the underframe, and a jacking mechanism is arranged between the lifting platform and the top frame. Its working face is great, safe and reliable, through setting up the pull railing, guarantees maintainer's operation safety, avoids falling, sets up the pull ring at railing top simultaneously and also can make things convenient for maintainer to carry out height control to the railing.
Description
Technical Field
The utility model relates to a maintenance work ladder, in particular to be used for A330 series aircraft wheel well and undercarriage maintenance work ladder.
Background
Aircraft maintenance operations require maintenance personnel to access various parts of the aircraft, including landing gear and wheel wells. However, the landing gear, the wheel well and the like are high above the ground, and the maintenance personnel are difficult to access without the help of a ladder, and at the moment, a proper maintenance work ladder is needed.
For the maintenance work of the wheel well and the landing gear of the a330 series airplane, the wheel well inlet is higher than the ground, so that a maintenance work ladder as shown in fig. 1 is often needed, and a maintenance engineer can effectively repair the lines in the wheel well and the driving parts of the landing gear. The wheel cabin inlet of the A330 series airplane is large, the number of pipelines inside the wheel cabin is large, the distribution is extremely complex, and the maintenance needs to be carried out on different positions of the wheel cabin inlet for many times during maintenance. In addition, the size of the landing gear and the diameter of the tire wheel are large, which may hinder the movement of maintenance personnel.
The existing maintenance working ladder has a small working surface, so that maintenance personnel need to frequently move the maintenance working ladder to adjust the position of the working surface when overhauling the wheel cabin, and the efficiency of maintenance work is reduced; meanwhile, in order to keep the stability of the maintenance working ladder, the floor area of the underframe is large, and the underframe is easy to interfere with the undercarriage of the airplane.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that an aircraft wheel well and undercarriage maintenance work ladder that can promote maintenance efficiency is proposed, its working face is great, safe and reliable, aim at making the worker can use this ladder to be close the undercarriage of aircraft, the suitable position in wheel well respectively to when the aircraft was by the jacking, also can adjust work platform's height correspondingly, and need not change the ladder.
For solving the technical problem, the utility model discloses the technical scheme who adopts as follows:
an A330 series aircraft wheel well and undercarriage maintenance work ladder, comprising:
the ladder frame comprises an underframe and a top frame, the underframe is a horizontally-laid door-shaped frame consisting of a door head and two legs, universal wheels are arranged at the bottom of the underframe, the top frame is a portal frame with two legs fixedly connected to the two legs on the top surface of the underframe respectively, and an inclined ladder stand is arranged between the middle part of the door head of the underframe and the edge of one side of the top frame corresponding to the middle part of the door head of the underframe;
the lifting platform is corresponding to the entrance of the wheel cabin of the A330 series airplane in size, the bottom of the lifting platform is connected with the top frame of the ladder frame through two scissor arms to realize lifting, a straight ladder is fixedly arranged at the position corresponding to the inclined ladder of the underframe, and a jacking mechanism is arranged between the lifting platform and the top frame.
On the basis, the utility model discloses can also have following various improvements:
vertical pull railings are arranged at the edges of two sides of the vertical ladder of the lifting platform, the vertical pull railings are rectangular frames and are provided with three parallel vertical rods, short sleeves corresponding to the vertical rods on the two sides of the pull railings and long sleeves corresponding to the middle vertical rod are fixed at the edges of the lifting platform, and the pull railings can be pulled up and down to lift through the long sleeves and the short sleeves; the middle vertical rod hollow part and the lower end of the pull railing are fixedly provided with a positioning lock, the positioning lock is provided with a lock tongue which transversely extends out, retracts, and can penetrate through a hole in the wall of the vertical rod, and the long sleeve is provided with through holes corresponding to the lock tongue at equal intervals.
Further, the positioning lock comprises:
the hollow lock shell is provided with a vertical hole and a side hole and is fixed at the lower end of a vertical rod in the middle of the pull railing;
the lock body is provided with a vertical hole, the left end of the lock body is provided with a protruding bolt, the bottom surface of the lock body is a horizontal plane, the top surface of the lock body is an inclined plane which faces forwards and downwards, the right end of the lock body is provided with a horizontal hole, the left side of the bottom of the lock body is a downward inclined plane of the lock body, and the left end of the bolt, which is arranged in the lock shell, corresponds to the side surface;
the upper end of the unlocking connecting rod is provided with a pull ring, the lower end of the unlocking connecting rod is fixedly provided with a driving block, and the driving block is provided with a driving inclined plane matched with the left inclined plane at the bottom of the lock tongue;
the spring is arranged in a right-end horizontal hole of the lock body, the left end of the spring is propped against the unlocking pull rod, and the right end of the spring is propped against the side wall of the lock body;
the unlocking connecting rod penetrates into the lock body from the hollow vertical rod in the middle of the drawing railing, an unlocking inclined plane of the lower end driving block is matched with the left inclined plane at the bottom of the lock body, and a space for enabling the spring bolt to return to the hollow vertical rod is reserved between the vertical hole of the lock body and the unlocking connecting rod and between the right end of the lock body and the lock shell.
More than two horizontal drawing plates are arranged at the bottom of the opposite sides of the vertical ladder of the lifting platform, and the size of the drawing plates corresponds to that of the landing gear main frame of the A330 series airplane.
And turnover railings are arranged at two ends of the lifting platform along two sides of the vertical ladder.
Furthermore, the jacking mechanism comprises a hydraulic cylinder connected to the bottom of the lifting platform and the top frame of the ladder frame, a control box arranged on the underframe of the ladder frame and used for controlling the stroke of the hydraulic cylinder, and a hydraulic station arranged on the ladder frame and used for providing power for the hydraulic cylinder, wherein the hydraulic station is connected with the hydraulic cylinder through an oil pipe.
Furthermore, the lifting foot margin is arranged on the underframe, and the towing rod is arranged on one side of the ladder frame.
The utility model discloses technical scheme has following beneficial effect for prior art:
(1) the working ladder is convenient for accommodating airplane tires of the landing gear through the design of the portal frame of the underframe, and the pull plate at the corresponding position of the landing gear is retracted to wrap the landing gear by the lifting platform, so that the lifting platform basically covers an A330 series airplane wheel hatch, the working area of maintenance personnel is maximized, the maintenance personnel can conveniently overhaul lines and equipment in the wheel hatch, and the working ladder does not need to be frequently replaced;
(2) through setting up the pull railing, when lift platform rises to apart from wheel cabin open-ended one end distance, can guarantee maintainer's operation safety through the pulling of pull railing, avoid falling, set up simultaneously and also can make things convenient for maintainer to carry out height control to the railing in the pull ring at railing top.
Drawings
FIG. 1 is a schematic diagram of a conventional maintenance ladder;
FIG. 2 is a schematic structural view of the present invention;
fig. 3 is a schematic view of the external structure of the pull-out balustrade of the present invention;
fig. 4 is an enlarged view of the internal cross-sectional structure at a of the pull rail of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that, if directional indicators (such as … …, upper, lower, left, right, front, back, top, bottom, inner, outer, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial) are involved in the embodiments of the present invention, the directional indicators are only used to explain the relative position, motion, etc. of the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicators are changed accordingly.
In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
The utility model provides a A330 series aircraft wheel cabin and undercarriage maintenance work ladder.
In the embodiment of the present invention, as shown in fig. 2, the a330 series aircraft wheel well and landing gear maintenance ladder includes a lifting platform 1 and a ladder frame composed of an underframe 2 and a roof frame 3, and the size of the lifting platform 1 corresponds to the wheel well entrance of the a330 series aircraft.
Specifically, the chassis is the door-shaped frame that constitutes by lintel 201 and both feet 202, 203 that keeps flat, and its bottom is provided with 4 universal wheels 4 in the four corners of door-shaped frame, and roof-rack 3 links firmly respectively for two legs portal-rack on two feet 202, 203 of chassis top surface, is provided with an oblique cat ladder 5 between 2 lintel 201 middle parts of chassis and the border of 3 one sides of roof-rack rather than corresponding, and the bottom of lift platform 1 is connected through two scissor arms 6 and roof-rack 3 of ladder-rack and is realized the liftable, has set firmly a straight-line cat ladder 7 in 5 position departments corresponding to 2 oblique cat ladders of chassis, is provided with climbing mechanism between lift platform 1 and the roof-rack 3.
Specifically, the bottom of the lifting platform 1 at the opposite side of the vertical ladder 7 is provided with six horizontal push-pull plates 17, the size of which corresponds to the undercarriage main frame of the A330 series aircraft, so that when the lifting platform 1 is close to the undercarriage main frame of the aircraft, the push-pull plates 17 at the two sides of the main frame are pulled out, the working surface of a maintenance worker is enlarged, and the maintenance ladder does not interfere with the undercarriage main frame; two sides of a door lintel 201 of the underframe 2 are respectively provided with a ground foot 8 for fixing the whole maintenance working ladder; a towing bar 9 is arranged on the foot 202 of the underframe 2 to facilitate towing of the service ladder by a trailer.
Specifically, the jacking mechanism comprises a hydraulic cylinder (not shown in the figure) connected to the bottom of the lifting platform 1 and the ladder frame top frame 3, a control box 20 arranged on the underframe of the ladder frame 3 and used for controlling the stroke of the hydraulic cylinder, and a hydraulic station 18 arranged on the ladder frame 3 and used for providing power for the hydraulic cylinder, wherein the hydraulic station 18 is connected with the hydraulic cylinder through an oil pipe 19.
In the embodiment of the present invention, as shown in fig. 2 and 3, vertical pull railings 10 are disposed at the edges of two sides of the vertical ladder 7 of the lifting platform 1, and each of the vertical pull railings is a rectangular frame and is provided with three parallel vertical bars 101, 102, and 103, short sleeves 11 corresponding to the vertical bars 101 and 103 at two sides of the pull railing 10 and a long sleeve 13 corresponding to the middle vertical bar are fixed at the edge of the lifting platform 1, and the short sleeves 11 and the long sleeve 13 enable the pull railing 10 to be pulled up and down; the hollow vertical rod 102 in the middle of the pull-out railing 10 and the lower end thereof are fixedly provided with a positioning lock 12, the positioning lock 12 is provided with a bolt which transversely extends out, retracts, and can penetrate through a hole in the vertical rod wall, the long sleeve 11 is equidistantly provided with through holes 16 corresponding to the bolts 121, and the two ends of the lifting platform 1 on the two sides of the vertical ladder 7 are provided with turnover railings 21.
In the embodiment of the present invention, as shown in fig. 4, the positioning lock 12 includes a hollow lock housing 121, a lock body 122, an unlocking link 123 and a spring 124.
Specifically, the hollow lock case 121 is provided with a vertical opening 1211 and a side opening 1212, and is fixed at the lower end of the vertical rod 102 in the middle of the pull-out balustrade 10; the lock body 122 is provided with a vertical hole 1221, the left end is provided with a bolt 1222 extending out, the bottom surface is a horizontal plane, the top surface is a forward and downward inclined plane, the right end is provided with a horizontal hole 1223, the left side of the bottom is a downward lock body inclined plane 1224, the bolt 1222 is arranged in the lock shell 121, and the left end corresponds to the side opening 1212 of the lock shell 121; the spring 124 is arranged in a right end horizontal hole 1223 of the lock body 122, the left end of the spring is propped against the bottom of the horizontal hole 1223, and the right end of the spring is propped against the inner side wall of the hollow lock shell 121; the upper end of the unlocking connecting rod 123 is provided with a pull ring 14, the lower end of the unlocking connecting rod 123 is fixed with a driving block 15, the unlocking connecting rod 123 is provided with a driving inclined plane 151 matched with a lock body inclined plane 1224 on the left side of the bottom of the bolt 1222, the unlocking connecting rod 123 penetrates from the hollow vertical rod 102 in the middle of the pull-out railing 10 to the lower part of the lock body 122, the unlocking inclined plane 151 of the driving block 15 on the lower end of the unlocking connecting rod is matched with the lock body inclined plane 1224 on the left side of the bottom of the lock body 122, and spaces for enabling the bolt 1222 to return into the hollow vertical rod 102 are reserved.
The above only is the preferred embodiment of the present invention, not so limiting the patent scope of the present invention, all under the concept of the present invention, the equivalent structure transformation made by the contents of the specification and the drawings is utilized, or the direct/indirect application is included in other related technical fields in the patent protection scope of the present invention.
Claims (7)
1. An A330 series aircraft wheel well and undercarriage maintenance work ladder, comprising:
the ladder frame comprises an underframe and a top frame, the underframe is a horizontally-laid door-shaped frame consisting of a door head and two legs, universal wheels are arranged at the bottom of the underframe, the top frame is a portal frame with two legs fixedly connected to the two legs on the top surface of the underframe respectively, and an inclined ladder stand is arranged between the middle part of the door head of the underframe and the edge of one side of the top frame corresponding to the middle part of the door head of the underframe;
the lifting platform is corresponding to the entrance of the wheel cabin of the A330 series airplane in size, the bottom of the lifting platform is connected with the top frame of the ladder frame through two scissor arms to realize lifting, a straight ladder is fixedly arranged at the position corresponding to the inclined ladder of the underframe, and a jacking mechanism is arranged between the lifting platform and the top frame.
2. The a 330-series aircraft wheel well and landing gear maintenance work ladder of claim 1, wherein: the vertical pull railings are arranged at the edges of the two sides of the vertical ladder of the lifting platform, each vertical pull railing is a rectangular frame and is provided with three parallel vertical rods, short sleeves corresponding to the vertical rods on the two sides of each pull railing and long sleeves corresponding to the middle vertical rod are fixed at the edges of the lifting platform, and the pull railings can be pulled up and down to lift through the long sleeves and the short sleeves; the middle vertical rod hollow part and the lower end of the pull railing are fixedly provided with a positioning lock, the positioning lock is provided with a lock tongue which transversely extends out, retracts, and can penetrate through a hole in the wall of the vertical rod, and the long sleeve is provided with through holes corresponding to the lock tongue at equal intervals.
3. The a330 series aircraft wheel well and landing gear servicing ladder of claim 2, wherein the positioning lock comprises:
the hollow lock shell is provided with a vertical hole and a side hole and is fixed at the lower end of a vertical rod in the middle of the pull railing;
the lock body is provided with a vertical hole, the left end of the lock body is provided with a protruding bolt, the bottom surface of the lock body is a horizontal plane, the top surface of the lock body is an inclined plane which faces forwards and downwards, the right end of the lock body is provided with a horizontal hole, the left side of the bottom of the lock body is a downward inclined plane of the lock body, and the left end of the bolt, which is arranged in the lock shell, corresponds to the side surface;
the upper end of the unlocking connecting rod is provided with a pull ring, the lower end of the unlocking connecting rod is fixedly provided with a driving block, and the driving block is provided with a driving inclined plane matched with the left inclined plane at the bottom of the lock tongue;
the spring is arranged in a right-end horizontal hole of the lock body, the left end of the spring is propped against the unlocking pull rod, and the right end of the spring is propped against the side wall of the lock body;
the unlocking connecting rod penetrates into the lock body from the hollow vertical rod in the middle of the drawing railing, an unlocking inclined plane of the lower end driving block is matched with the left inclined plane at the bottom of the lock body, and a space for enabling the spring bolt to return to the hollow vertical rod is reserved between the vertical hole of the lock body and the unlocking connecting rod and between the right end of the lock body and the lock shell.
4. The a 330-series aircraft wheel well and landing gear maintenance work ladder of claim 1, wherein: the bottom of the lifting platform on the opposite side of the vertical ladder is provided with more than two horizontal drawing plates, and the size of the drawing plates corresponds to the main landing gear frame of the A330 series aircraft.
5. The a 330-series aircraft wheel well and landing gear maintenance work ladder of claim 1, wherein: and turnover railings are arranged at two ends of the lifting platform along two sides of the vertical ladder.
6. The a 330-series aircraft wheel well and landing gear maintenance work ladder of claim 1, wherein: the jacking mechanism comprises a hydraulic cylinder connected to the bottom of the lifting platform and the top frame of the ladder frame, a control box arranged on the underframe of the ladder frame and used for controlling the stroke of the hydraulic cylinder, and a hydraulic station arranged on the ladder frame and used for providing power for the hydraulic cylinder, wherein the hydraulic station is connected with the hydraulic cylinder through an oil pipe.
7. An a330 series aircraft wheel well and landing gear servicing ladder as claimed in any one of claims 1 to 6, wherein: the ladder comprises a ladder frame and is characterized by further comprising lifting feet arranged on the underframe and a towing rod arranged on one side of the ladder frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922107127.4U CN211692281U (en) | 2019-11-29 | 2019-11-29 | A330 series aircraft wheel cabin and undercarriage maintenance work ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922107127.4U CN211692281U (en) | 2019-11-29 | 2019-11-29 | A330 series aircraft wheel cabin and undercarriage maintenance work ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211692281U true CN211692281U (en) | 2020-10-16 |
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ID=72788809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922107127.4U Active CN211692281U (en) | 2019-11-29 | 2019-11-29 | A330 series aircraft wheel cabin and undercarriage maintenance work ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211692281U (en) |
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2019
- 2019-11-29 CN CN201922107127.4U patent/CN211692281U/en active Active
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