CN219328461U

CN219328461U - Rocket sled vibration damper with self-adaptive orbit and rocket sled

Info

Publication number: CN219328461U
Application number: CN202223539082.6U
Authority: CN
Inventors: 毛凯; 侯召轩; 李少伟; 王晓明; 徐颖蕾; 高文轶; 杨德林; 李萍
Original assignee: Casic Feihang Technology Research Institute of Casia Haiying Mechanical and Electronic Research Institute
Current assignee: Casic Feihang Technology Research Institute of Casia Haiying Mechanical and Electronic Research Institute
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-07-11
Anticipated expiration: 2032-12-29

Abstract

The utility model relates to the technical field of rocket sleds, and discloses a rocket sled vibration damper with a self-adaptive orbit and the rocket sled. The device comprises a sledge body, a flexible connection unit and a plurality of vibration reduction sliding blocks, wherein the vibration reduction sliding blocks are arranged at the bottom of the sledge body through the flexible connection unit, and the bottoms of the vibration reduction sliding blocks are matched with a track. Therefore, the vibration reduction sliding block can be flexibly connected with the sledge body, rigid collision between the vibration reduction sliding block and a track is avoided, the structure is simple and reliable, the vibration reduction effect is enhanced, and the defect that the traditional rocket sledge only depends on the vibration reduction sliding block for vibration reduction is overcome.

Description

Rocket sled vibration damper with self-adaptive orbit and rocket sled

Technical Field

The utility model relates to the technical field of rocket sleds, in particular to a rocket sled vibration damper with a self-adaptive orbit and the rocket sled.

Background

The rocket sled uses the rocket engine as power to push the rocket sled to advance at high speed on a special track so as to obtain model (or real object) test data, and the rocket sled is a large-scale ground dynamic test system. In the test process, the vibration problem under the test condition of the high-speed rocket sled needs to be considered. The vibration reduction slider device for the high-speed rocket sled test is provided in the prior art, and vibration reduction of the rocket sled in three coordinate directions can be achieved, so that a proper rocket sled test environment is provided. However, the existing rocket sled vibration damping device adopts a mode of directly installing a vibration damping slider on a sled body, and although the vibration damping slider can better realize vibration damping for the rocket sled, the contact relation between the slider and a track is ignored, and the change of the gesture of the sled causes the slider to collide with the track, so that the vibration damping effect is affected.

Disclosure of Invention

The utility model provides a rocket sled vibration damper with a self-adaptive orbit and a rocket sled, which can solve the technical problems in the prior art.

The utility model provides a rocket sled vibration damper with a self-adaptive track, which comprises a sled body, a flexible connection unit and a plurality of vibration damper sliding blocks, wherein the vibration damper sliding blocks are arranged at the bottom of the sled body through the flexible connection unit, and the bottoms of the vibration damper sliding blocks are matched with the track.

Preferably, the flexible connection unit comprises a slider supporting shaft, a transverse connection piece, a longitudinal connection piece and a movable piece, the vibration reduction slider is connected with the bottom of the sledge body through the slider supporting shaft and freely rotates around the slider supporting shaft, one end of the longitudinal connection piece is connected with the sledge body through the movable piece, and the other end of the longitudinal connection piece is connected with the vibration reduction slider through the transverse connection piece, so that the vibration reduction slider realizes rotation in the pitching direction.

Preferably, the transverse connection and the longitudinal connection are both connecting rods.

Preferably, the connecting rod is a cylinder or a prism.

Preferably, the movable part is a rotating shaft.

The utility model also provides a rocket sled, wherein the rocket sled vibration damper comprising the self-adaptive orbit.

Through the technical scheme, the vibration reduction sliding block and the sled body can be flexibly connected, rigid collision between the vibration reduction sliding block and a rail is avoided, the structure is simple and reliable, the vibration reduction effect is enhanced, and the defect that the traditional rocket sled only depends on the vibration reduction sliding block for vibration reduction is overcome.

Drawings

The accompanying drawings, which are included to provide a further understanding of embodiments of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model. It is evident that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

FIG. 1 illustrates a schematic view of a self-adaptive orbital rocket sled vibration reduction device according to an embodiment of the present utility model;

fig. 2 shows a schematic structural view of a flexible connection unit according to an embodiment of the present utility model;

FIG. 3 illustrates a schematic view of a rocket sled according to an embodiment of the present utility model.

Description of the reference numerals

A rocket engine; 2, a sledge body; 3, a sliding block supporting shaft; 4 a transverse connector;

5 longitudinal connectors; 6, a movable piece; a vibration reduction slide block; 8 tracks.

Detailed Description

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present utility model unless it is specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but should be considered part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.

FIG. 1 illustrates a schematic view of a self-adaptive orbital rocket sled vibration reduction device according to an embodiment of the present utility model.

As shown in fig. 1, an embodiment of the present utility model provides a rocket sled vibration damping device with a self-adaptive track, wherein the device includes a sled body 2, a flexible connection unit, and a plurality of vibration damping sliders 7, wherein the plurality of vibration damping sliders 7 are disposed at the bottom of the sled body 2 through the flexible connection unit, and the bottom of the vibration damping sliders 7 is adapted to the track 8.

The vibration damping slider 7 is matched with the track, so that vibration damping effects in multiple directions can be achieved, and vibration damping of the rocket sled is achieved.

Fig. 2 shows a schematic structural view of a flexible connection unit according to an embodiment of the present utility model.

According to one embodiment of the present utility model, as shown in fig. 2, the flexible connection unit includes a slider supporting shaft 3, a transverse connection member 4, a longitudinal connection member 5 and a movable member 6, the vibration damping slider 7 is connected with the bottom of the sled body 2 through the slider supporting shaft 3, and the vibration damping slider 7 freely rotates around the slider supporting shaft 3, one end of the longitudinal connection member 5 is connected with the sled body 2 through the movable member 6, and the other end is connected with the vibration damping slider 7 through the transverse connection member 4, so that the vibration damping slider 7 realizes rotation in a pitch direction.

The sliding block supporting shaft can release the freedom degree of circumferential rotation, so that the vibration reduction sliding block can rotate around the supporting shaft, the sliding shoe can be automatically applicable to track change of the track, the sliding shoe and the track are ensured to be always in surface-surface contact, and the vibration reduction effect of the vibration reduction sliding block is fully exerted. The sliding block supporting shafts on the left side and the right side of the sledge car are connected through the transverse connecting piece, so that the stability of the sliding block structure is improved. The transverse connecting rod is connected with the sledge body through the longitudinal connecting piece, so that the longitudinal connection of the vibration reduction sliding block and the sledge body can be realized. The movable piece can realize the rotation of the longitudinal connecting rod in the pitching direction (namely, the vibration reduction sliding block can be allowed to generate tiny displacement in the pitching direction, so that the vibration caused by the fact that the vibration reduction sliding block resists track irregularity is enhanced).

Therefore, the vibration damping slide block has vibration damping functions in the longitudinal direction, the vertical direction and the transverse direction.

According to one embodiment of the utility model, the transverse connection 4 and the longitudinal connection 5 are both connecting rods.

The connecting rod is adopted to improve the connection stability.

According to one embodiment of the utility model, the connecting rod is a cylinder or a prism.

According to one embodiment of the present utility model, the movable member 6 is a rotating shaft.

For example, the material of the slider support shaft 3, the transverse connection 4, the longitudinal connection 5 and the movable member 6 may be metal.

It is to be understood by persons skilled in the art that the above description is intended to be illustrative and not restrictive.

As shown in fig. 3, the embodiment of the present utility model further provides a rocket sled, where the rocket sled vibration reduction device includes the adaptive orbit described in the above embodiment.

For example, when a rocket engine (which is a test product of a rocket sled test) needs to be tested, the vibration reduction slider 7 can be connected with the sled body 2 through the flexible connection unit, then the rocket engine 1 and the base are screwed on the sled body 2, and finally the combination of the rocket engine 1 and the sled is pushed in from one end of the track 8 to prepare for the rocket sled test.

The sled body 2 is a main body structure on which the rocket engine 1 is mounted and slides on the rail 8, and has functions of stably connecting the constituent members and receiving a load.

Therefore, in the test process, the rigid collision between the vibration reduction sliding block and the track can be avoided, the vibration reduction effect is enhanced, and the defect that the traditional rocket sled only depends on the vibration reduction sliding block for vibration reduction is overcome.

As can be seen from the above embodiments, the vibration damping device according to the present utility model can release the vertical rotational freedom of the vibration damping slider and allow a slight displacement of the vibration damping slider in the pitch direction. The vibration reduction sliding block can adapt to the track to adjust the gesture, and the gesture change of the sledge body caused by track irregularity is reduced.

In the description of the present utility model, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present utility model; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present utility model.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. The utility model provides a self-adaptation orbital rocket sled vibration damper, its characterized in that, this device includes sled car body (2), flexible connection unit and a plurality of damping slider (7), and is a plurality of damping slider (7) are in through flexible connection unit sets up sled car body (2) bottom, the bottom and the track (8) adaptation of damping slider (7).

2. The device according to claim 1, characterized in that the flexible connection unit comprises a slider support shaft (3), a transverse connection member (4), a longitudinal connection member (5) and a movable member (6), the vibration damping slider (7) is connected with the bottom of the sledge body (2) through the slider support shaft (3) and the vibration damping slider (7) freely rotates around the slider support shaft (3), one end of the longitudinal connection member (5) is connected with the sledge body (2) through the movable member (6), and the other end is connected with the vibration damping slider (7) through the transverse connection member (4) so that the vibration damping slider (7) realizes rotation in a pitching direction.

3. The device according to claim 2, characterized in that the transverse connection (4) and the longitudinal connection (5) are both connecting rods.

4. A device according to claim 3, wherein the connecting rod is a cylinder or prism.

5. Device according to claim 2, characterized in that the movable element (6) is a rotating shaft.

6. A rocket sled comprising the adaptive orbit rocket sled vibration reduction device according to any one of claims 1-5.