CN211391754U - Leg type landing buffer device capable of being repeatedly used - Google Patents
Leg type landing buffer device capable of being repeatedly used Download PDFInfo
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- CN211391754U CN211391754U CN201922259238.7U CN201922259238U CN211391754U CN 211391754 U CN211391754 U CN 211391754U CN 201922259238 U CN201922259238 U CN 201922259238U CN 211391754 U CN211391754 U CN 211391754U
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- 238000013016 damping Methods 0.000 claims abstract description 13
- 235000000396 iron Nutrition 0.000 claims description 3
- 229920001967 Metal rubber Polymers 0.000 abstract description 8
- 238000007906 compression Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 230000006835 compression Effects 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 abstract description 2
- 238000002955 isolation Methods 0.000 description 7
- 230000003139 buffering effect Effects 0.000 description 5
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
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- 239000004814 polyurethane Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
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Abstract
The utility model relates to a leg landing buffer device which can be repeatedly used, a foot pad is connected with a main supporting column of a supporting leg through a ball hinge connector, and a metal rubber block is arranged between the ball hinge and the foot pad; a one-way damper and a long spring are arranged between the inner sleeve and the outer sleeve, the one-way damper has no damping in the compression process, the damping is in the stretching process, the impact kinetic energy can be stored by the compression of the long spring, the one-way damper works after the maximum compression amount is reached, and the spring slowly recovers the original length to recover the posture of the landing leg; the load box is connected with the upper frame and the lower frame through CR type steel wire rope shock absorbers, is connected with the outer cylinder through GS type steel wire rope shock absorbers, and the outer cylinder is connected with the inner cylinder through an adjustable damper and a short spring. The utility model discloses form multiple dash mechanism that separates, improved and separate and dash efficiency to can used repeatedly, be applicable to in planet's such as earth, moon, mars and asteroid landing and the detection activity.
Description
Technical Field
The utility model relates to a landing buffer, specifically speaking are repeatedly usable's leg landing buffer.
Background
With the development of near-earth and deep space exploration technologies, the landing gear is usually required to carry a payload; and as the landing environment has the characteristics of unknown, variable and strong impact, if effective protection is not carried out, the effective load is inevitably damaged. Therefore, the landing apparatus needs to have strong environmental adaptability and to be capable of multidirectional shock isolation.
In addition, some ground proximity detection tasks (such as battlefield reconnaissance and the like) have particularity and irreproducibility, which requires the landing gear to have characteristics of high reliability, recyclability, reusability and the like; therefore, the cost is reduced, and the use efficiency of the landing device is improved. The mechanical landing mode becomes the first choice of the landing device with the advantages of high reliability, wide application range and the like.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems of poor reliability, non-reusability and high cost of the existing lander, the utility model aims to provide a leg type landing buffer device which can be repeatedly used. The leg type landing buffer device can be used in ground and deep space exploration activities, can be reused and can carry effective loads.
The purpose of the utility model is realized through the following technical scheme:
the utility model comprises an upper frame, landing legs, a steel wire rope shock absorber A, a steel wire rope shock absorber B, a load box and a lower frame, wherein the upper frame is connected with the lower frame through a plurality of landing legs; the landing leg comprises an upper end cover, an inner cylinder, an outer cylinder, a one-way damper, a long spring, a landing leg main strut, an adjustable damper, a short spring, a foot pad, a spherical hinge connector and a lower end cover, wherein the upper end and the lower end of the inner cylinder are respectively connected with an upper frame and a lower frame, the upper end and the lower end of the inner cylinder are respectively connected with the upper end cover and the lower end cover, the one-way damper and the long spring are contained in the inner cylinder, the one-way damper is arranged on the upper end cover, a piston rod of the one-way damper is connected with the landing leg main strut inserted into the inner cylinder, the long spring is sleeved outside the piston rod of the one-way damper and the piston rod of the one-way; the outer cylinder is sleeved outside the inner cylinder in a relatively movable manner, one end or two ends of the outer cylinder are connected with the inner cylinder through the adjustable damper, and a short spring is sleeved between one end or two ends of the outer cylinder and the corresponding end part of the inner cylinder; one end of the landing leg main strut is inserted into the inner cylinder in a relatively movable manner and is connected with the piston rod, and the other end of the landing leg main strut is connected with a spherical hinge connector arranged on the foot pad; the load box is connected with the upper frame and the lower frame through a steel wire rope shock absorber A, and is connected with the outer cylinder of each landing leg through a steel wire rope shock absorber B.
Wherein: the adjustable damper comprises a circular ring, a throat hoop, felt and a bolt, the circular ring is installed at the end of the outer cylinder and sleeved on the inner cylinder, the throat hoop is sleeved on the outer surface of the circular ring, the felt in contact with the inner cylinder is installed on the inner surface of the circular ring, the tightness of the throat hoop is adjusted by screwing the bolt on the throat hoop, and then the pressing force of the circular ring on the inner cylinder is adjusted to realize damping adjustment.
The circular ring is divided into two identical parts, each part comprises a bottom plate and a half ring, the bottom plate is installed on the end face of the outer barrel, the outer surface of the half ring is provided with an outer annular clamping groove connected with the hose clamp, and the inner surface of the half ring is provided with an inner annular clamping groove for containing the felt.
The two ends of the inner cylinder are respectively exposed from the two ends of the outer cylinder, the short spring is sleeved on the exposed part of the inner cylinder, and the two ends of the short spring are respectively abutted to the end parts of the inner cylinder and the outer cylinder.
The foot pad is characterized in that a connecting sleeve is arranged on the upper surface of the foot pad, the spherical hinge connector is positioned inside the connecting sleeve, and the other end of the supporting leg main strut is of a spherical structure, penetrates into the connecting sleeve and is connected with the spherical hinge connector.
The connecting sleeve is internally provided with a buffer element which is positioned between the ball joint connector and the foot pad.
The inner cylinder is of a hollow structure with openings at two ends, the middle part is a cylinder, the two ends are cuboids, and the side surfaces of the cuboids at the two ends are respectively connected with the upper frame and the lower frame and respectively connected with the upper end cover and the lower end cover; the short spring is abutted against the cuboid.
The outer cylinder is of an octahedral sleeve structure with openings at two ends, namely the end face of the outer cylinder is square with four chamfered corners, the area of a face corresponding to the chamfer is smaller than that of a face corresponding to four sides of the square, and the cylindrical surface in the outer cylinder is matched with the inner cylinder to form a linear pair; one end of the steel wire rope shock absorber B is connected with the load box, and the other end of the steel wire rope shock absorber B is connected with the surface with a small area in the outer surface of the outer barrel.
The load box is a cuboid and is formed by surrounding six central plates, and V-shaped blocks used for connecting adjacent central plates are arranged at each corner of the cuboid; one end of the steel wire rope shock absorber A is connected with the upper frame or the lower frame through the connecting support block, and the other end of the steel wire rope shock absorber A is connected with the load box through the V-shaped block.
The upper frame and the lower frame are identical in structure and are surrounded into a square shape by four I-shaped beams, adjacent I-shaped beams are connected through angle irons, and four corners of the square upper frame and four corners of the square lower frame are connected through the landing legs to form the outer frame.
The utility model discloses an advantage does with positive effect:
1. the utility model discloses form multiple separating towards mechanism at the landing in-process, improved and separated towards efficiency to can used repeatedly, be applicable to planet such as earth, moon, mars and little march in the landing and the detection activity.
2. The utility model discloses can effectively avoid the device to take place to turn on one's side at the landing in-process.
3. The utility model discloses the long spring of the inside nonlinearity of landing leg makes the landing process more steady, makes the impact acceleration of the inside payload department of placing of load box reach the minimum.
4. The utility model discloses a connect through adjustable attenuator between the inside and the urceolus, can make the felt adjust for the damping size of inner tube.
Drawings
Fig. 1 is a schematic perspective view of the present invention;
FIG. 2 is a sectional view of the landing device of the present invention;
FIG. 3 is a schematic perspective view of the adjustable damper of FIG. 2;
FIG. 4 is a schematic view of the ring of FIG. 3;
FIG. 5 is a schematic perspective view of the inner barrel of FIG. 2;
FIG. 6 is a schematic perspective view of the outer barrel of FIG. 2;
fig. 7 is a schematic perspective view of the V-block of the present invention;
wherein: 1 is an upper frame, 2 is a landing leg, 201 is an upper end cover, 202 is an inner cylinder, 2021 is a cylinder, 2022 is a cuboid, 2023 is a side face, 203 is an outer cylinder, 204 is a one-way damper, 205 is a long spring, 206 is a piston rod, 207 is a main support of a support leg, 208 is a bolt, 209 is a felt, 210 is a hose hoop, 211 is a circular ring, 2111 is a bottom plate, 2112 is a half ring, 2113 is an external annular clamping groove, 2114 is an internal annular clamping groove, 212 is a short spring, 213 is a foot pad, 214 is a ball hinge connector, 215 is a metal rubber block, 216 is a connecting sleeve, 217 is a lower end cover, 3 is a steel wire rope shock absorber A, 4 is a V-shaped block, 5 is a steel wire rope shock absorber B, 6 is an angle iron, 7 is a central plate, 8 is a lower frame, and 9 is a.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1 and 2, the present invention comprises an upper frame 1, landing legs 2, a steel wire rope shock absorber a3, a steel wire rope shock absorber B5, a load box and a lower frame 8, wherein the upper frame 1 is connected with the lower frame 8 through a plurality of landing legs 2, the load box is arranged in the space enclosed by the upper frame 1, the lower frame 8 and each landing leg 2, and a payload is arranged in the load box. The landing leg 2 comprises an upper end cover 201, an inner cylinder 202, an outer cylinder 203, a one-way damper 204, a long spring 205, a main supporting column 207 of the supporting leg, an adjustable damper, a short spring 212, a foot pad 213, a ball hinge connector 214 and a lower end cover 217, wherein the upper end and the lower end of the inner cylinder 202 are respectively connected with the upper frame 1 and the lower frame 8, the upper end and the lower end of the inner cylinder 202 are respectively connected with the upper end cover 201 and the lower end cover 217 through screws, the one-way damper 204 and the long spring 205 are arranged in the inner cylinder 202, the one-way damper 204 is connected with the lower surface of the upper end cover 201 through a pin, a piston rod 206 of the one-way damper 204 is in threaded connection with the main supporting column 207 of the supporting leg inserted into the inner cylinder 202, the long spring 205 is sleeved outside the piston rods 206 of the one-way damper. The outer cylinder 203 is sleeved outside the inner cylinder 202 in a relatively movable manner, one end or both ends of the outer cylinder 203 are connected to the inner cylinder 202 through an adjustable damper (in this embodiment, both ends of the outer cylinder 203 are respectively connected to the inner cylinder 202 through an adjustable damper), and a short spring 212 is sleeved between one end or both ends of the outer cylinder 203 and the corresponding end of the inner cylinder 202 (in this embodiment, a short spring 212 is respectively sleeved between both ends of the outer cylinder 203 and both ends of the inner cylinder 202). One end of the main leg support 207 is relatively movably inserted into the inner cylinder 202 and welded to the piston rod 206, and the other end of the main leg support 207 is connected to a ball joint 214 mounted on a foot pad 213. The load box is connected with the upper frame 1 and the lower frame 8 through a wire rope shock absorber A3, and is connected with the outer cylinder 203 of each landing leg 2 through a wire rope shock absorber B5. The long spring 205 of the present embodiment is a non-linear long spring and the short spring 212 is a linear metal short spring.
The upper frame 1 and the lower frame 8 have the same structure, and are surrounded into a square shape (a square shape in the embodiment) by four I-beams made of aluminum alloy materials, the adjacent I-beams are fixedly connected with angle irons 6 made of aluminum alloy materials through screws, and four corners of the square upper frame 1 and the square lower frame 8 are connected through landing legs 2 to form an outer frame.
As shown in fig. 1, 2 and 5, the inner cylinder 202 has a hollow structure with two open ends, a cylinder 2021 in the middle, and a cuboid 2022 (square in this embodiment) at two ends, the inner wall of the inner cylinder 202 has a cylindrical structure, and the side surfaces 2023 of the cuboid 2022 at two ends are respectively fixed to the upper and lower frames 1, 8 through angle iron 6 and are respectively connected to the upper end cap 201 and the lower end cap 217. Both ends of the inner cylinder 202 are exposed from both ends of the outer cylinder 203, respectively, a short spring 212 is fitted to the exposed portion of the inner cylinder 202, one end of the short spring 212 is connected to a rectangular parallelepiped 2022 at the end of the inner cylinder 202 and the end of the outer cylinder 203, respectively, and the position of the short spring 212 is restricted by the rectangular parallelepiped 2022.
As shown in fig. 1, 2 and 6, the outer cylinder 203 of the present embodiment has an octahedral sleeve structure with openings at both ends, that is, the end surface of the outer cylinder 203 is square with four corners chamfered, and the area of the surface corresponding to the chamfer is smaller than the area of the surface corresponding to the four corners of the square. One end of the wire rope damper B5 is connected to the load box, and the other end is connected to the small-area surface of the outer cylinder 203 by a bolt.
The load box is a cuboid (a cube in the embodiment) and is formed by surrounding six central plates 7, the central plates 7 in the embodiment adopt honeycomb sandwich plates or aluminum alloy plates and can be determined by combining specific quality requirements and bearing requirements; each corner of the cuboid is provided with a V-shaped block 4 for connecting adjacent central plates 7. One end of the steel wire rope shock absorber A3 is fixedly connected with the upper frame 1 or the lower frame 8 through a connecting support block 9, and the other end is connected with the load box through a V-shaped block 4. In the four side surfaces of the load box of the embodiment, the upper part of each side surface is connected with the upper frame 1 through one wire rope shock absorber B5, and the lower part of each side surface is connected with the lower frame 8 through two wire rope shock absorbers A3; thus, 20V-shaped blocks 4 are installed on the load box of this embodiment, and the V-shaped blocks 4 are made of aluminum alloy material and connected with the central plate 7 through bolts. As shown in fig. 7, the V-shaped block 4 of the present embodiment is composed of three square plates with bolt holes respectively formed therein, wherein two square plates are perpendicular to each other and are respectively connected to two adjacent surfaces of the load box by bolts, and the middle square plate is disposed in an inclined manner and is used for being connected to the wire rope damper a 3. The end face of the connecting support block 9 of the embodiment is an isosceles right triangle, two right-angle sides are fixedly connected with the upper frame 1 or the lower frame 8 through bolts respectively, and the inclined side is used for fixedly connecting with a steel wire rope shock absorber A3.
As shown in fig. 1 to 4, the adjustable damper of the present embodiment includes a circular ring 211, a throat hoop 210, a felt 209, and a bolt 208, where the circular ring 211 is installed at an end of the outer cylinder 203 and is sleeved on a portion of the inner cylinder 202 exposed from the outer cylinder 203, the throat hoop 210 is sleeved on an outer surface of the circular ring 211, the felt 209 contacting the inner cylinder 202 is installed on an inner surface of the circular ring 211, tightness of the throat hoop 210 is adjusted by screwing the bolt 208 on the throat hoop 210, and then pressing force of the circular ring 211 on the felt 210 is adjusted, so that the pressing force of the felt 210 relative to the inner cylinder 202 is changed, and damping adjustment. The ring 211 of this embodiment is not a complete continuous body, but is divided into two identical parts, each of which includes a bottom plate 2111 and a half ring 2112, the bottom plate 2111 is fixed to the end surface of the outer cylinder 203 through screws, the outer surface of the half ring 2112 is provided with an external annular groove 2113 connected to the hose clamp 210, and the inner surface is provided with an internal annular groove 2114 for accommodating the felt 209. In the embodiment, the felt 209 is impregnated with damping grease, the outer ring of the felt 209 is in contact with an inner annular clamping groove 2114 formed in the inner surface of the half ring 2112, and the inner ring of the felt 209 is in contact with the inner cylinder 202.
As shown in fig. 1 and 2, the outer surface of the foot pad 213 of this embodiment is a conical surface, the inner part of the foot pad 213 is concave, and the middle position of the inner upper surface of the foot pad 213 is fixedly connected with a connecting sleeve 216 through a bolt; the ball-hinge joint 214 is positioned inside the connecting sleeve 216, and the other end of the main strut 207 of the leg is a spherical structure, penetrates into the connecting sleeve 216, and is connected with the ball-hinge joint 214. The connecting sleeve 216 further accommodates a buffering element, which may be a spring damping element or a rubber device or other components capable of performing a buffering function, the buffering element of this embodiment is a metal rubber block 215, and the material of the buffering element may also be a reusable buffering material such as rubber and polyurethane; including connecting sleeve 216 wraps up ball pivot connector 214 and metal rubber piece 215, this metal rubber piece 215 is located between ball pivot connector 214 and the foot pad 213, has alleviated the huge impact that receives when foot pad 213 contacts ground, has improved the utility model discloses a separate towards efficiency, play the guard action to foot pad 213 simultaneously.
The steel wire rope shock absorber A3 of the utility model is a commercially available product, purchased from Anlijing damping technology Limited company in Baoding City, and has the model number of CR 6-200; the steel wire rope shock absorber B5 is a commercially available product, and is purchased from Anlijing damping technology GmbH of Baoding, and the model is GS 2-28. The one-way damper 204 of the utility model is a commercially available product, purchased from ACE brand products of the germany STABILUS company, HB series M-type hydraulic dampers.
The upper end cover 201, the inner cylinder 202, the outer cylinder 203, the piston rod 206, the main supporting leg 207, the connecting sleeve 206, the foot pad 213, the hose clamp 210 and the circular ring 211 of the utility model are all made of stainless steel.
The utility model discloses a theory of operation does:
when the utility model discloses when falling to the ground, separate towards shock attenuation device through foot pad 213, metal rubber piece 215, one-way attenuator 204, nonlinear long spring, adjustable attenuator, linear metal short spring and CR type wire rope shock absorber and GS type wire rope shock absorber etc. respectively, these elastic element reach the minimum through the impact that the effective load that warp and place in messenger central plate 207 received to realize multistage separating towards. The method specifically comprises the following steps:
after the utility model is landed, the foot pad 213 contacts the ground at first, and the impact load is transmitted to the metal rubber block 215 through the foot pad 213, so that the metal rubber block 215 is deformed to realize the first-stage impact isolation; then, the impact load is transmitted to the one-way damper 204 and the nonlinear long spring along with the main supporting column 207 of the supporting leg, and the one-way damper 204 has no damping in the compression process, so that the main supporting column 207 of the supporting leg can rapidly compress the nonlinear long spring to do work, and the kinetic energy and the gravitational potential energy are converted into elastic potential energy to be stored; when the nonlinear long spring reaches the maximum compression amount, the original length starts to recover, and at the moment, the one-way damper 204 has damping, so that the nonlinear long spring slowly extends, and the main structure (namely the inner cylinder 202, the outer cylinder 203, the upper frame 1, the lower frame 8 and the load box) slowly rises, thereby avoiding the side turning of the utility model, realizing the posture recovery and forming a second-stage impact isolation; then, the impact is transmitted to the adjustable damper and the linear metal short spring, the adjustable damper adjusts the self-damping through the bolt 208, so that the impact force is reduced to an ideal value, and three-stage isolation impact is formed; finally, the impact is transmitted to the central plate 7 through the GS type wire rope shock absorber and the CR type wire rope shock absorber which are fixed on the outer cylinder 203, and four-stage isolation impact is formed. CR type wire rope bumper shock absorber can consume level and vertical direction impact load simultaneously, and GS type wire rope bumper shock absorber mainly used works as the utility model discloses take place the side under extremely abominable landing condition and fall the back and protect the load box. Impact force borne by the effective load in the load box is reduced to the minimum through the four stages of shock isolation, and the shock isolation efficiency is effectively improved.
Claims (10)
1. A leg landing buffer device capable of being repeatedly used is characterized in that: the landing leg comprises an upper frame (1), landing legs (2), a steel wire rope shock absorber A (3), a steel wire rope shock absorber B (5), a load box and a lower frame (8), wherein the upper frame (1) is connected with the lower frame (8) through a plurality of landing legs (2), and the load box is arranged in a space surrounded by the upper frame (1), the lower frame (8) and each landing leg (2); the landing leg (2) comprises an upper end cover (201), an inner cylinder (202), an outer cylinder (203), a one-way damper (204), a long spring (205), a support leg main support (207), an adjustable damper, a short spring (212), a foot pad (213), a spherical hinge connector (214) and a lower end cover (217), wherein the upper end and the lower end of the inner cylinder (202) are respectively connected with an upper frame (1) and a lower frame (8), the upper end and the lower end of the inner cylinder (202) are respectively connected with the upper end cover (201) and the lower end cover (217), the inner cylinder (202) is internally provided with the one-way damper (204) and the long spring (205), the one-way damper (204) is arranged on the upper end cover (201), a piston rod (206) of the one-way damper (204) is connected with the support leg main support (207) inserted into the inner cylinder (202), and the long spring (205) is sleeved outside the piston rods (206) of the one-way, two ends of the long spring (205) are respectively abutted against the upper end cover (201) and the main supporting column (207) of the supporting leg; the outer cylinder (203) is sleeved outside the inner cylinder (202) in a relatively movable manner, one end or two ends of the outer cylinder (203) are connected with the inner cylinder (202) through the adjustable damper, and a short spring (212) is sleeved between one end or two ends of the outer cylinder (203) and the corresponding end part of the inner cylinder (202); one end of the main supporting column (207) of the supporting leg is inserted into the inner cylinder (202) in a relatively movable way and is connected with the piston rod (206), and the other end of the main supporting column (207) of the supporting leg is connected with a spherical hinge connector (214) arranged on a foot pad (213); the load box is connected with the upper frame (1) and the lower frame (8) through a steel wire rope shock absorber A (3), and is connected with the outer cylinder (203) of each landing leg (2) through a steel wire rope shock absorber B (5).
2. The reusable landing leg buffer as claimed in claim 1, wherein: the adjustable damper comprises a circular ring (211), a throat hoop (210), a felt (209) and a bolt (208), wherein the circular ring (211) is installed at the end part of the outer cylinder (203) and sleeved on the inner cylinder (202), the throat hoop (210) is sleeved on the outer surface of the circular ring (211), the felt (209) in contact with the inner cylinder (202) is installed on the inner surface of the circular ring (211), the tightness of the throat hoop (210) is adjusted by screwing the bolt (208) on the throat hoop (210), then the pressing force of the circular ring (211) on the inner cylinder (202) is adjusted, and damping adjustment is achieved.
3. The reusable landing leg buffer as claimed in claim 2, wherein: the circular ring (211) is divided into two identical parts, each part comprises a bottom plate (2111) and a half ring (2112), the bottom plate (2111) is installed on the end face of the outer cylinder (203), the outer surface of the half ring (2112) is provided with an outer annular clamping groove (2113) connected with a hose clamp (210), and the inner surface of the half ring is provided with an inner annular clamping groove (2114) for accommodating the felt (209).
4. The reusable landing leg buffer as claimed in claim 1, wherein: the two ends of the inner cylinder (202) are respectively exposed from the two ends of the outer cylinder (203), the short spring (212) is sleeved on the exposed part of the inner cylinder (202), and the two ends of the short spring (212) are respectively abutted with the end parts of the inner cylinder (202) and the outer cylinder (203).
5. The reusable landing leg buffer as claimed in claim 1, wherein: the upper surface of the foot pad and foot pad (213) is provided with a connecting sleeve (216), the spherical hinge connector (214) is positioned inside the connecting sleeve (216), and the other end of the supporting leg main strut (207) is of a spherical structure, penetrates into the connecting sleeve (216) and is connected with the spherical hinge connector (214).
6. The reusable landing leg buffer as claimed in claim 5, wherein: the connecting sleeve (216) also accommodates a cushioning element located between the ball joint connector (214) and the foot pad (213).
7. The reusable landing leg buffer as claimed in claim 1, wherein: the inner cylinder (202) is of a hollow structure with two open ends, the middle part is a cylinder (2021), the two ends are cuboids (2022), the side surfaces (2023) of the cuboids (2022) at the two ends are respectively connected with the upper frame (1) and the lower frame (8) and are respectively connected with the upper end cover (201) and the lower end cover (217); the short spring (212) abuts against the cuboid (2022).
8. The reusable landing leg buffer as claimed in claim 1, wherein: the outer cylinder (203) is of an octahedral sleeve structure with openings at two ends, namely the end face of the outer cylinder (203) is square with four chamfered corners, the area of a face corresponding to the chamfer is smaller than that of a face corresponding to the four sides of the square, and the cylindrical surface in the outer cylinder (203) is matched with the inner cylinder (202) to form a linear pair; one end of the steel wire rope shock absorber B (5) is connected with the load box, and the other end of the steel wire rope shock absorber B is connected with the surface with a small area in the outer surface of the outer cylinder (203).
9. The reusable landing leg buffer as claimed in claim 1, wherein: the load box is a cuboid and is formed by surrounding six central plates (7), and V-shaped blocks (4) used for connecting adjacent central plates (7) are arranged at each corner of the cuboid; one end of the steel wire rope shock absorber A (3) is connected with the upper frame (1) or the lower frame (8) through a connecting support block (9), and the other end of the steel wire rope shock absorber A is connected with the load box through a V-shaped block (4).
10. The reusable landing leg buffer as claimed in claim 1, wherein: the upper frame (1) and the lower frame (8) are identical in structure and are surrounded into a square shape by four I-shaped beams, the adjacent I-shaped beams are connected through angle irons (6), and four corners of the square upper frame (1) and the square lower frame (8) are connected through the landing legs (2) to form the outer frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922259238.7U CN211391754U (en) | 2019-12-17 | 2019-12-17 | Leg type landing buffer device capable of being repeatedly used |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922259238.7U CN211391754U (en) | 2019-12-17 | 2019-12-17 | Leg type landing buffer device capable of being repeatedly used |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211391754U true CN211391754U (en) | 2020-09-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922259238.7U Withdrawn - After Issue CN211391754U (en) | 2019-12-17 | 2019-12-17 | Leg type landing buffer device capable of being repeatedly used |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211391754U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110844125A (en) * | 2019-12-17 | 2020-02-28 | 中国科学院沈阳自动化研究所 | Leg type landing buffer device capable of being repeatedly used |
| CN112722337A (en) * | 2021-01-23 | 2021-04-30 | 吉林大学 | Gradient energy-absorbing inner core planet detection buffering landing leg based on memory alloy |
-
2019
- 2019-12-17 CN CN201922259238.7U patent/CN211391754U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110844125A (en) * | 2019-12-17 | 2020-02-28 | 中国科学院沈阳自动化研究所 | Leg type landing buffer device capable of being repeatedly used |
| CN110844125B (en) * | 2019-12-17 | 2024-01-30 | 中国科学院沈阳自动化研究所 | Reusable leg type landing buffer device |
| CN112722337A (en) * | 2021-01-23 | 2021-04-30 | 吉林大学 | Gradient energy-absorbing inner core planet detection buffering landing leg based on memory alloy |
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