CN218844971U - Self-adaptive floating damping supporting leg for boarding ladder of fighter plane - Google Patents
Self-adaptive floating damping supporting leg for boarding ladder of fighter plane Download PDFInfo
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- CN218844971U CN218844971U CN202223305977.3U CN202223305977U CN218844971U CN 218844971 U CN218844971 U CN 218844971U CN 202223305977 U CN202223305977 U CN 202223305977U CN 218844971 U CN218844971 U CN 218844971U
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Abstract
The utility model provides a shock attenuation supporting legs that floats of self-adaptation for fighter plane airstairs, this supporting legs include one-level snubber block, pedestal mounting piece, universal bracing piece, second grade snubber block, end cover and casing, a recess is seted up to the top of one-level snubber block, sets up the pedestal mounting piece in this recess, the one end and the pedestal mounting piece rotatable coupling of universal bracing piece, the other end of universal bracing piece stretch into the casing from the below in and be connected with the second grade snubber block, the second grade snubber block is spacing inside the casing, the end cover is in the casing top. The utility model discloses the contact mode of supporting legs and holding surface has been improved, the damage that the supporting legs caused for the holding surface is reduced when can effectually playing the shock attenuation cushioning effect.
Description
Technical Field
The utility model belongs to the technical field of the aircraft spare part and specifically relates to a shock attenuation supporting legs that floats of self-adaptation for fighter plane airstairs is related to.
Background
The airstairs are tools for facilitating the flight personnel to get on and off the cabin, and the airstairs need to be hung on the airplane in the daily use process, and the supporting feet are supported at the appointed positions of the airplane skin. The existing supporting feet for the airstairs are generally combined by heightening carbon steel supporting rods through rubber bases, have no weight-reducing buffer structures and are fixed in the supporting direction. Because the force of a person is changed in the boarding process, the force can act on the supporting surface through the supporting legs finally, and the supporting legs have no damping and buffering structures, so that the supporting legs and the supporting surface can be relatively displaced and generate friction force to damage the supporting surface, and certain influence is caused on the coating of the airplane. The fixed angle and the roughness that will require the holding surface of support direction are higher.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an: aiming at the problems in the prior art, the self-adaptive floating damping supporting leg for the boarding ladder of the fighter plane is provided, and the problems that the boarding ladder has no damping and damages the coating of the plane in the use process are solved.
The invention purpose of the utility model is realized by the following technical scheme:
the utility model provides a self-adaptation shock attenuation supporting legs that floats for fighter plane airstair, this supporting legs includes one-level snubber block, pedestal mounting piece, universal bracing piece, second grade snubber block, end cover and casing, a recess is seted up to the top of one-level snubber block, sets up the pedestal mounting piece in this recess, the one end and the pedestal mounting piece rotatable coupling of universal bracing piece, the other end of universal bracing piece stretch into the casing from the below and be connected with the second grade snubber block in, the second grade snubber block is spacing inside the casing, the end cover lid is in the casing top.
As a further scheme, be equipped with a through-hole that communicates the one-level snubber block bottom in the recess, be equipped with the exhaust piston mounting groove on the pedestal mounting piece, install the exhaust piston in this exhaust piston mounting groove, the lower extreme of this exhaust piston covers the through-hole, and the universal bracing piece is lived in the upper end butt of exhaust piston.
As a further scheme, universal bracing piece includes bulb, connecting rod and annular bulge, the bulb is connected to the one end of connecting rod, and the middle part of connecting rod sets up annular bulge, bulb and pedestal mounting piece rotatable coupling, the second grade snubber block cover is on the connecting rod, and the below of second grade snubber block supports on annular bulge, and the top of second grade snubber block is spacing fixed through the nut of twisting on the connecting rod.
As a further scheme, the base mounting block comprises a lower base mounting block and an upper base mounting block, and a hemispherical groove matched with the ball head is formed in the lower base mounting block.
As a further scheme, anti-skid grains are arranged below the primary damping block.
As a further scheme, a limiting block is arranged below the end cover and abuts against the upper side of the secondary damping block.
Compared with the prior art, the utility model has the advantages of it is following:
1. the contact mode of supporting legs and holding surface has been improved, reduce the damage that the supporting legs led to the fact for the holding surface when can effectually playing the shock attenuation cushioning effect.
2. The stability of the airstairs in use can be effectively improved, the damage of the friction belt to the supporting surface is reduced, and the service life of the airplane supporting surface coating is prolonged.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
fig. 3 is an exploded view of fig. 1.
Description of reference numerals:
1-end cover, 2-shell, 3-secondary damping block, 4-universal support rod, 5-primary damping block, 6-exhaust piston, 7-screw, 8-upper base mounting block, 9-lower base mounting block, 10-groove, 11-through hole, 12-anti-skid grain, 13-limiting block, 41-bulb, 42-connecting rod, 43-annular bulge.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
Examples
As shown in fig. 1, 2 and 3, the present embodiment provides an adaptive floating shock-absorbing support foot for an airstair of a fighter, which comprises a primary shock-absorbing block 5, a base mounting block, a universal support rod 4, a secondary shock-absorbing block 3, an end cover 1 and a housing 2. A groove 10 is formed above the primary damping block 5, a base mounting block is arranged in the groove 10, and the base mounting block is fixed through screws penetrating through the lower portion of the primary damping block 5. One end and the pedestal mounting piece rotatable coupling of universal bracing piece 4, the other end of universal bracing piece 4 stretches into in the casing 2 from the below and is connected with second grade snubber block 3, and second grade snubber block 3 is spacing inside casing 2. The end cap 1 is covered over the housing 2 and secured by screws 7.
A through hole 11 communicated with the bottom of the primary damping block 5 is arranged in the groove 10. Be equipped with exhaust piston mounting groove on the pedestal mounting piece, install exhaust piston 6 in this exhaust piston mounting groove, the lower extreme of this exhaust piston 6 covers through-hole 11, and universal support rod 4 is lived in the upper end butt of exhaust piston 6. The exhaust piston 6 blocks the through hole 11 to generate negative pressure under the pressure of the universal support rod 4, so that the primary damping block 5 is adsorbed on the support surface;
the universal support rod 4 includes a ball 41, a connecting rod 42, and an annular boss 43. One end of the connecting rod 42 is connected with the ball 41, and the middle part of the connecting rod 42 is provided with an annular bulge 43. Bulb 41 and pedestal mounting piece rotatable coupling, second grade snubber block 3 cover is on connecting rod 42, and the below of second grade snubber block 3 supports on annular bellying 43, and the top of second grade snubber block 3 is spacing fixed through the nut of twisting on the connecting rod. When the shock absorption device is used, the supporting surface is in contact with the supporting legs, and the primary shock absorption block 5 is pressed to generate elastic deformation to play a primary shock absorption buffering role; the universal support rod 4 enables the primary damping block 5 to better fit with a support surface through the ball head 41; force is transmitted to the second-stage damping block 3 through the universal support rod 4, and the second-stage damping block 3 is stressed to generate elastic deformation to play a second-stage damping role, so that the damping and buffering effect is further improved. When the stress of the supporting leg changes, the second-level damping block 3 is elastically deformed and displaces together with the shell 2 to reduce the elastic deformation and displacement of the first-level damping block 5 and reduce the friction between the first-level damping block 5 and the contact surface, so that the floating damping supporting leg can protect the supporting surface. When collecting, lightly carry the air ladder, universal bracing piece 4 is not exerting pressure to exhaust piston 6, and the elasticity of one-level snubber block 5 self is opened exhaust piston 6 top, makes supporting legs internal and external pressure balance, easily separates with the holding surface, reaches the purpose of collecting fast.
In order to facilitate the installation, the base mounting block comprises a lower base mounting block 9 and an upper base mounting block 8, and a hemispherical groove matched with the ball head 41 is formed in the lower base mounting block 9. During installation, the upper base mounting block 8 is sleeved on the upper half part of the ball head 41 downwards from the upper part of the universal support rod 4, then the ball head 41 is supported in a hemispherical groove on the lower base mounting block 9, and finally the lower base mounting block 9, the upper base mounting block 8 and the first-level damping block 5 are fixed together through screws.
In order to be exactly attached to the supporting surface, anti-skid grains 12 are arranged below the primary shock absorption block.
And a limiting block 13 is arranged below the end cover 1, and the limiting block 13 is propped against the upper part of the secondary damping block 3. The below trompil of casing 2, the second grade snubber block 3 that is less than in this hole just in time blocks second grade snubber block 3 like this, then when end cover 1 covers, stopper 13 just in time supports in second grade snubber block 3 top, is about to like this that second grade snubber block 3 is complete spacing, fixes end cover 1 and casing 2 through screw 7 at last.
The above description is only exemplary of the present invention and should not be taken as limiting, and all changes, equivalents, and improvements made within the spirit and principles of the present invention should be understood as being included in the scope of the present invention.
Claims (6)
1. The self-adaptive floating damping supporting leg is characterized by comprising a primary damping block, a base mounting block, a universal supporting rod, a secondary damping block, an end cover and a shell, wherein a groove is formed above the primary damping block, the base mounting block is arranged in the groove, one end of the universal supporting rod is rotatably connected with the base mounting block, the other end of the universal supporting rod extends into the shell from the lower side to be connected with the secondary damping block, the secondary damping block is limited in the shell, and the end cover covers the shell.
2. The self-adaptive floating shock-absorbing support leg for the boarding ladder of the fighter plane is characterized in that a through hole communicated to the bottom of the primary shock-absorbing block is formed in the groove, an exhaust piston mounting groove is formed in the base mounting block, an exhaust piston is mounted in the exhaust piston mounting groove, the lower end of the exhaust piston covers the through hole, and the upper end of the exhaust piston abuts against the universal support rod.
3. The self-adaptive floating damping supporting leg for the boarding ladder of the fighter plane is characterized in that the universal supporting bar comprises a ball head, a connecting rod and an annular bulge, one end of the connecting rod is connected with the ball head, the annular bulge is arranged in the middle of the connecting rod, the ball head is rotatably connected with the base mounting block, the secondary damping block is sleeved on the connecting rod, the lower part of the secondary damping block abuts against the annular bulge, and the upper part of the secondary damping block is limited and fixed through a nut screwed on the connecting rod.
4. The adaptive floating shock-absorbing support leg for an airframe boarding ladder as recited in claim 3, wherein the pedestal mounting block comprises a lower pedestal mounting block and an upper pedestal mounting block, and a hemispherical groove matched with the ball head is formed in the lower pedestal mounting block.
5. The self-adaptive floating shock-absorbing support leg for the fighter plane ladder according to claim 1, characterized in that anti-skid veins are arranged below the primary shock-absorbing block.
6. The adaptive floating shock absorption supporting foot for the fighter plane airstairs is characterized in that a limiting block is arranged below the end cover and abuts against the upper part of the secondary shock absorption block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223305977.3U CN218844971U (en) | 2022-12-08 | 2022-12-08 | Self-adaptive floating damping supporting leg for boarding ladder of fighter plane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223305977.3U CN218844971U (en) | 2022-12-08 | 2022-12-08 | Self-adaptive floating damping supporting leg for boarding ladder of fighter plane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218844971U true CN218844971U (en) | 2023-04-11 |
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ID=87300880
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223305977.3U Active CN218844971U (en) | 2022-12-08 | 2022-12-08 | Self-adaptive floating damping supporting leg for boarding ladder of fighter plane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218844971U (en) |
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2022
- 2022-12-08 CN CN202223305977.3U patent/CN218844971U/en active Active
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