CN111006551A

CN111006551A - Open type soft landing buffer device

Info

Publication number: CN111006551A
Application number: CN202010014034.1A
Authority: CN
Inventors: 张元�; 王祺
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2020-01-07
Filing date: 2020-01-07
Publication date: 2020-04-14

Abstract

The invention discloses an open type soft landing buffer device which is mainly used in the field of open type soft landing buffer; the ball pair connecting mechanism mainly comprises an upper base, a spring damping buffer mechanism, a limiting support frame mechanism, a lower base and a ball pair connecting mechanism; the invention has the advantages that the open type buffer mechanism is used, and a dustproof sleeve is not required to be sleeved outside the buffer device, so that dust brought up by the lander during landing is prevented from entering the closed type buffer device, and the safety and stability of the work are damaged; the progressive springs are arranged outside the upper short shaft and the lower long shaft, and the ends of the upper short shaft and the lower long shaft are in interference fit with metal rubber to form a spring damping mechanism for absorbing and buffering to reduce vibration during landing; the open type limiting supporting mechanism adopts a progressive connecting rod support structure, and a limiting baffle plate is arranged between each pair of supports to limit the maximum displacement of the supporting supports, so that overload damage is prevented.

Description

Open type soft landing buffer device

Technical Field

The invention relates to an open type soft landing buffering device, and belongs to the field of open type soft landing buffering.

Background

The soft landing buffer device is a key part for the safe landing of the lander and mainly has the main function of absorbing most impact energy in the landing process, so that the lander can land safely and stably, and the phenomena of overturning and rebounding are avoided. In the landing process, the reverse-spraying rocket and the huge impact force on the ground act on the soil, dust can be blown, and the dust is fine and large in quantity, so that the phenomenon that the dust enters the landing buffer device to damage the mechanism and the safety of work is affected is difficult to avoid. Therefore, the open type soft landing buffer device is designed, the whole mechanism is open, and the phenomenon that dust enters the interior to influence the operation of the mechanism is avoided.

Disclosure of Invention

The invention discloses an open type soft landing buffer device which is mainly used in the field of open type soft landing buffer; open type soft landing buffer device: the ball pair connecting structure comprises an upper base, a spring damping buffer mechanism, a limiting support frame mechanism, a lower base and a ball pair connecting structure;

the invention has the advantages that:

1. an open type buffer mechanism is used, a dustproof sleeve does not need to be sleeved outside the buffer device, and dust is prevented from entering the buffer device to damage the safety and stability of work;

2. the progressive spring and the metal rubber form a spring damping mechanism to absorb and buffer and reduce vibration during landing, the progressive spring adopts a design with inconsistent thickness and density, when the impact force is large, the thick part of the spring plays a role in supporting and buffering, and when the impact force is not large, the fluctuation of the vibration can be absorbed through the part with lower elastic coefficient, so that the landing stability is ensured;

3. the open type limiting supporting mechanism adopts a progressive connecting rod support structure, and a limiting baffle plate is arranged between each pair of supports to limit the maximum displacement of the supporting supports, so that the buffer mechanism is prevented from being damaged when the stress is too large.

Description of the drawings:

the mechanism is further explained in the following with the attached drawings.

FIG. 1: overall schematic diagram of open type soft landing buffer device

FIG. 2 is a drawing: schematic diagram of spring damping buffer device

FIG. 3: schematic diagram of an open type limiting connecting rod support frame mechanism.

Detailed Description

The components and their relationship will be described with reference to the accompanying drawings.

As shown in fig. 1-3, the open soft landing buffer device comprises an upper base 1, a progressive spring 2, a lower base 3, a ball pair connecting structure 4, an upper base shaft 5, an upper base shaft metal rubber 6, a lower base shaft metal rubber 7, a lower base shaft 8, an upper connecting rod 9, a middle connecting rod 10, a lower connecting rod 11 and a limit stop 12.

Preferably, the lower base shaft 8 and the ball pair connecting structure 4 are respectively welded with the lower base 3 into a whole, and the upper base shaft 5 is welded with the upper base 1 into a whole.

Preferably, four ear seats are distributed on the surfaces of the upper base 1 and the lower base 3 in an equal circumference manner and are hinged with the limiting support frame mechanism through the ear seats.

Preferably, the limit stop 12 is installed at the hinged position of the limit support frame mechanism with the upper base 1 and the lower base 3, and the hinged position of the upper connecting rod 9, the middle connecting rod 10 and the lower connecting rod 11, and is used for limiting the overlarge displacement stroke.

Preferably, the progressive spring is installed in spring seats on the surface of the upper and

lower bases

1 and 1.

Preferably, the upper base shaft 5 and 6, the upper base shaft metal rubber and the lower base shaft 8 and the lower base shaft metal rubber 7 are in interference connection through wedge-shaped end parts.

Preferably, an open type buffer mechanism is used, a dustproof sleeve does not need to be sleeved outside the buffer device, and dust is prevented from entering the interior of the buffer device to damage the safety and stability of work.

The working process is as follows:

the device has the advantages that the integration of parts is simplified, and for the landing process, the device is combined with various functional applications to carry out integration design, reduces the application of scattered parts, and is favorable for realizing light weight. When landing, the dust on the surface is dense and fine and can bring up the dust, the influence of the dust can be avoided by adopting the open design, and the whole device can well run to complete various works.

When the landing device lands at a designated position, the landing device is subjected to large impact at the moment, and due to the impact effect, the limiting support frame device is compressed under the impact effect, and meanwhile, the spring damping buffer mechanism is compressed to absorb the impact, so that the impact force is reduced to the lowest degree, and the buffer effect is achieved. The limit stop will guarantee that the support frame is in safe working stroke in the buffering process, and when the impact is finished, the support frame begins to expand due to the action of the spring to complete the buffering and shock absorption process.

Claims

1. An open soft landing buffer, comprising: the device comprises an upper base 1, a spring damping buffer mechanism, a limiting support frame mechanism, a lower base 3 and a ball pair connecting mechanism 4.

2. The open soft landing buffer of claim 1, wherein: four ear seats are distributed on the surface circumferences of the upper base 1 and the lower base 3 and are hinged with the limiting support frame mechanism through the ear seats.

3. The open soft landing buffer of claim 1, wherein: the spring damping buffer mechanism comprises an upper base shaft metal rubber 6, a lower base shaft metal rubber 7, a progressive spring 2, a lower base shaft 8 and an upper base shaft 5, and absorbs, buffers and reduces vibration when landing, the progressive spring adopts a design with inconsistent thickness and density, when impact force is large, the thick part of the spring plays a role of supporting and buffering, and when the impact force is not large, the fluctuation of the vibration can be absorbed through the part with lower elastic coefficient, so that the landing stability is ensured.

4. The open soft landing buffer of claim 3, wherein: the lower base shaft 8 and the upper base shaft 5 are made of aluminum alloy, the aluminum alloy has low density but higher strength which is close to or exceeds that of high-quality steel, the plasticity is good, and the lower base shaft and the upper base shaft have excellent electrical conductivity, thermal conductivity and corrosion resistance, and can provide higher strength and ensure the safety and stability in the landing process when being used as key parts in the buffering and damping process.

5. The open soft landing buffer of claim 3, wherein: the metal rubber has the inherent characteristics of the selected metal and the elasticity like rubber, the friction force among metal wires can play a role of buffering during buffering, and the high strength of the metal can achieve the aim of shock absorption.

6. The open soft landing buffer of claim 1, wherein: the ball pair connecting mechanism 4 is connected with the foot end through a ball pair, and the open type soft landing buffer device is connected through the ball pair, so that the landing device can adapt to rugged and uncertain terrain, has high flexibility and ensures stable landing.

7. The open soft landing buffer of claim 1, wherein: the supporting scheme and the progressive spring 2 can be matched to the maximum extent, and the limit stop 12 is arranged at the hinge joint of the connecting rods in order to prevent the mechanism from being damaged due to overlarge load of the supporting frame; the open type buffer design scheme not only meets the design requirement of light weight, but also can avoid the influence of dust on the mechanism, thereby influencing the service life of the whole device.