CN109592081B

CN109592081B - Angle-adjustable limiting mechanism

Info

Publication number: CN109592081B
Application number: CN201811340898.1A
Authority: CN
Inventors: 陈欢; 李源; 李建辉; 杨德财; 李长江; 姜景明
Original assignee: Shanghai Aerospace System Engineering Institute
Current assignee: Shanghai Aerospace System Engineering Institute
Priority date: 2018-11-12
Filing date: 2018-11-12
Publication date: 2021-05-28
Anticipated expiration: 2038-11-12
Also published as: CN109592081A

Abstract

The invention relates to an angle-adjustable limiting mechanism which comprises a supporting structure, a driving part and an angle adjusting part, wherein the angle adjusting part further comprises a linear motion mechanism, two limiting parts and a connecting assembly. The driving part and the connecting component are respectively arranged at two ends of the supporting structure, one ends of the two limiting parts are respectively rotatably connected with the connecting component, and the two limiting parts are oppositely arranged; the linear motion mechanism is arranged on the supporting structure, is connected with the other ends of the two limiting parts in a one-to-one correspondence manner, and is used for controlling the relative angle of the two limiting parts. The invention can adjust the hard limiting angle to be applied to tasks of different models, and solves the technical problem that the limiting mechanism can be applied to tasks of different models.

Description

Angle-adjustable limiting mechanism

Technical Field

The invention relates to the technical field of pointing mechanisms, in particular to a limiting mechanism capable of realizing hard limiting angle adjustment.

Background

The limiting mechanism is a mechanism for limiting the translation range or the rotation range of a given target, so that the protection of a motion mechanism or a load is realized, and the mechanism is prevented from running out of bounds and damaging the mechanism or other products on the satellite due to wrong instructions, control errors, instruction run-off and the like.

With the continuous development of space technology, more and more tasks are applied to the limiting mechanism, and for different types of tasks, the hardware limiting angles of the limiting mechanism are generally different. This makes it necessary for designers to design different stop mechanisms for different task requirements.

Meanwhile, the products of other models are borrowed by the limiting mechanism products in the initial stage, the situation that the hard limiting angle is not matched is often met, and in order to meet the hard limiting index of a new model task, the limiting mechanism of the borrowed model is usually changed.

Disclosure of Invention

The invention aims to provide an angle-adjustable limiting mechanism which can adjust a hard limiting angle so as to be applied to tasks of different models.

In order to solve the above problems, the present invention provides a limiting mechanism with an adjustable angle, which comprises a supporting structure and a driving part, and is characterized by further comprising an angle adjusting part, wherein the angle adjusting part comprises a linear motion mechanism, two limiting parts and a connecting assembly;

the driving part and the connecting assembly are respectively arranged at two ends of the supporting structure; one end of each limiting piece is rotatably connected with the connecting component, and the two limiting pieces are arranged oppositely; the linear motion mechanism is arranged on the supporting structure, is connected with the other ends of the two limiting parts in a one-to-one correspondence manner, and is used for controlling the relative angle of the two limiting parts.

Preferably, the linear motion mechanism includes a sliding member, and when adjusting the angle, the sliding member slides to a suitable position along the other end of the limiting member and then is locked.

Preferably, the linear motion mechanism further comprises a lead screw, a fine adjustment barrel and a driving piece; the driving piece is arranged on the supporting structure and drives the lead screw to rotate, the fine adjustment barrel is in threaded connection with the lead screw, one end of the fine adjustment barrel is connected with the sliding piece, and the fine adjustment barrel and the sliding piece are locked after the angle is adjusted.

Preferably, the limiting member is a rod member, and one end of the rod member includes a sleeve portion, and the sleeve portion is sleeved and pressed on the connecting assembly.

Preferably, the locating part includes the bellying, coupling assembling includes spacing portion, spacing portion forms hard spacing to the bellying of two locating parts to the rotatory maximum angle of control locating part.

Preferably, the connecting assembly comprises a short shaft and an end cover, the short shaft is connected with the supporting structure, and the end cover is arranged at one end of the short shaft and is rotatably connected with the limiting piece.

Preferably, an angle mark is engraved on the end cover for judging an angle between the two limiting members.

Preferably, the support structure comprises a base and a rotating bracket; the linear motion mechanism is fixed on the base, the short shaft is rotatably connected with the base and fixedly connected with the rotating support, and the driving part is fixed on the base and rotatably connected with the rotating support.

Preferably, the driving part comprises a body fixing component and a shafting output component; the body fixing component is fixed on the base and is in rotating connection with the rotating support through the shafting output component.

Compared with the prior art, the invention has the following technical effects:

1. the invention provides an angle-adjustable limiting mechanism which comprises a supporting structure, a driving part and an angle adjusting part, wherein all parts are relatively independent, so that the angle-adjustable limiting mechanism has high modularization and integration and is convenient for quantitative production.

2. The driving part and the angle adjusting part are respectively arranged at the two ends of the supporting structure, so that the whole limiting mechanism is more stable.

3. The limiting piece can rotate around one end of the limiting piece, and the other end of the limiting piece is controlled by the linear motion mechanism to rotate, so that the angle adjustment between the two limiting pieces is realized, when the limiting mechanism is applied to tasks of different models, only the angle between the two limiting pieces is adjusted, and the limiting mechanism does not need to be redesigned.

4. When other tasks are borrowed in the initial stage, the limiting mechanism product can be matched in model by only adjusting the angle between the limiting parts without changing the structure.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. In the drawings:

FIG. 1 is a perspective view of an angularly adjustable stop mechanism of the present invention;

FIG. 2 is a cross-sectional view of the angularly adjustable stop mechanism of the present invention;

fig. 3 is a schematic view of the recliner member of the present invention wherein (a) and (b) are views in opposite directions;

FIG. 4 is a schematic view of two position-limiting elements according to the present invention;

FIG. 5 is a schematic view of a stub shaft of the present invention;

fig. 6 is a schematic view of a slider according to the present invention, wherein (a) is a perspective view and (b) is a front view.

Wherein: 1. the device comprises a supporting structure, 101, a base, 101-1, a horizontal part, 101-2, a vertical part, 102, a rotating support, 2, a driving part, 201, a body fixing component, 202, a shafting output component, 3, an angle adjusting part, 301, a short shaft, 301-1, a limiting part, 302, an end cover, 302-1, an arc-shaped through hole, 303, a limiting part, 303-1, a convex part, 303-2, a sleeve part, 304, a sliding part, 304-1, a sliding part, 304-2, a connecting rod part, 305, a pressing gasket, 306, a fine adjusting cylinder, 307, a lead screw, 308, a bearing, 309, a shaft section, 310 and a driving part.

Detailed Description

The following detailed description of the angle adjustable limiting mechanism provided by the present invention will be made with reference to fig. 1 to 6, the following embodiments are implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following embodiments, and those skilled in the art can modify and decorate the angle adjustable limiting mechanism without changing the spirit and content of the present invention.

Referring to fig. 1-6, an angle-adjustable limiting mechanism includes a supporting structure 1, a driving member 2, and an angle-adjusting member 3, wherein the angle-adjusting member 3 includes a linear motion mechanism, two limiting members 303, and a connecting assembly.

The driving part 2 and the connecting assembly are respectively arranged at two ends of the supporting structure 1, one ends of the two limiting pieces 303 are respectively rotatably connected with the connecting assembly, and the two limiting pieces 303 are oppositely arranged; the linear motion mechanism is disposed on the supporting structure 1, and is connected to the other ends of the two limiting members 303 in a one-to-one correspondence manner, for controlling the relative angle of the two limiting members 303.

In detail: the limiting mechanism provided by the invention comprises a supporting structure 1, a driving part 2 and an angle adjusting part 3, and all parts are relatively independent, so that the high modularization and integration are realized. Wherein the support structure 1 is used for mounting other components. The driving part 2 and the angle adjusting part 3 are respectively arranged at two ends of the supporting structure 1, so that the whole limiting mechanism is more stable. The limiting members 303 can rotate around one end thereof, and the other end of the limiting members 303 is controlled by the linear motion mechanism to rotate, so that the angle between the two limiting members 303 is adjusted.

Referring to fig. 1-5, in one embodiment, the linear motion mechanism includes a sliding member 304, and the sliding member 304 slides along the other end of the position-limiting member 303 to a proper position and then locks when adjusting the angle.

In detail: the limiting member 303 is slidably connected to the linear motion mechanism, and when the linear motion mechanism performs a linear motion, the linear motion mechanism slides along the radial direction of the limiting member 303 on the one hand, and provides a circumferential acting force on the limiting member 303 on the other hand, so as to drive the limiting member 303 to rotate, and when the limiting member 303 reaches an angle required by a task, the sliding member 304 is locked on the limiting member 303, so that the limiting mechanism can be applied to tasks of different models, in other words, the limiting mechanism can be mass-produced, and when the limiting mechanism is applied to tasks of different models, only the angle adjusting member 3 needs to be adjusted to a proper position according to the requirement of the task. In addition, radial and circumferential directions here are understood to be: the radial direction and the circumferential direction of a virtual circle perpendicular to the axis about which the stopper 303 rotates at one end thereof.

With continued reference to fig. 1-3 and fig. 6, in one embodiment, the linear motion mechanism further includes a lead screw 307, a fine tuning cylinder 306, and a driving member 310. Wherein, the driving member 310 is disposed on the supporting structure 1 and drives the lead screw 307 to rotate; the fine adjustment cylinder 306 is connected with the screw 307 by screw threads, one end of the fine adjustment cylinder is connected with the sliding part 304, and after the angle is adjusted, the fine adjustment cylinder 306 and the sliding part 304 are locked.

In detail: the linear motion mechanism is a screw pair, and the driving member 310 may be a motor as long as it can drive the screw 307 to rotate. The inner wall of the fine adjustment cylinder 306 is provided with internal threads, and the lead screw 307 rotates to drive the fine adjustment cylinder 306 to move linearly. The end of the fine tuning cylinder 306 is connected with the sliding part 304, the fine tuning cylinder and the sliding part can rotate relatively in the process of adjusting the angle, and the fine tuning cylinder and the sliding part are locked by a fastener after the angle is adjusted. Specifically, the sliding member 304 may adopt a structure as shown in fig. 6, which includes a sliding portion 304-1 and a connecting rod portion 304-2, wherein a through hole is formed on the sliding portion 304-1, and the limiting member 303 penetrates through the through hole to connect the sliding portion 304-1. One end of the connecting rod portion 304-2 is connected to the sliding portion 304-1, and both are preferably integrally formed. The connecting rod portion 304-2 extends through the fine adjustment barrel 306, and the locking of the connecting rod portion 304-2 can be achieved by a fastener such as a nut, for example, a free end of the connecting rod portion 304-2 is threaded so that the end is connected with the nut, and the fine adjustment barrel 306 is compressed between the nut and the sliding portion 304-1, thereby achieving the locking.

Referring to fig. 1-4, in one embodiment, the position-limiting member 303 is a rod member, and one end of the rod member includes a sleeve portion 303-2, and the sleeve portion 303-2 is sleeved and pressed onto the connecting member.

In detail: the connecting assembly comprises a shaft section 309, and the sleeve portions 303-2 of the two limiting members 303 are sequentially sleeved on the shaft section 309, and the sleeve portions 303-2 are pressed at the end parts of the shaft section 309 to limit the axial direction. This compression may be accomplished by a compression washer 305 and a screw, the compression washer 305 being located at the end of the shaft segment 309 and limiting the sleeve, the screw extending through the compression washer 305 and being tightened onto the shaft segment 309.

Referring to fig. 1-3, in one embodiment, the position-limiting members 303 include protrusions 303-1, the connecting member includes a position-limiting portion 301-1, and the position-limiting portion 301-1 forms a hard position-limiting for the protrusions 303-1 of the two position-limiting members 303 and controls the maximum angle of rotation of the position-limiting members 303.

In detail: the convex portion 303-1 may be an arc segment formed along the virtual circle as shown in fig. 4. The stop portion 301-1 may be a cylindrical segment extending along the connection assembly, as shown in fig. 5. The free end of the convex part 303-1 and the outer surface of the limiting part 301-1 can have the same curved surface, so that the two parts can be in surface contact under extreme conditions, and the impact generated by collision of the two parts is reduced. The limiting part 301-1 is arranged between the two limiting parts 303, and after the limiting parts 303 rotate to the maximum angle of rotation, the limiting part 301-1 performs hard limiting on the boss part 303-1 to prevent movement from being over-limited.

Referring to fig. 1-5, in one embodiment, the connecting assembly includes a stub shaft 301 and an end cap 302, the stub shaft 301 is connected to the supporting structure 1, and the end cap 302 is disposed at one end of the stub shaft 301 and rotatably connected to the position-limiting member 303.

In terms of fineness: the shaft segment 309 is arranged on the end cover 302, and preferably, the shaft segment 309 is arranged at the center of the end cover 302 and is arranged coaxially with the short shaft 301; the sleeve portion of the stopper 303 is pressed against the end cap 302. The cylindrical section is disposed on the short shaft 301, the cylindrical section penetrates the end cap 302, and preferably, an arc-shaped through hole 302-1 is formed on the end cap 302, so that the cylindrical section can be more conveniently installed through the end cap 302.

Further, the end cap 302 may be provided with an angle mark for determining an angle between the two position-limiting members 303, so as to improve the accuracy and efficiency of angle adjustment.

With continued reference to fig. 1-5, in one embodiment, the support structure 1 includes a base 101 and a rotational support 102, the linear motion mechanism is fixed on the base 101, the short shaft 301 is rotatably connected to the base 101 and fixedly connected to the rotational support 102, and the driving member 2 is fixed on the base 101 and rotatably connected to the rotational support 102.

In detail: the base 101 includes a horizontal portion 101-1 and a vertical portion 101-2, wherein the vertical portion 101-2 is provided at both ends of the horizontal portion 101-1, and the vertical portion 101-2 and the horizontal portion 101-1 are preferably integrally formed. The driving member 310 of the linear motion mechanism is mounted on the horizontal portion 101-1. The short shaft 301 is rotatably connected with a vertical part 101-2 through a deep groove ball bearing 308 and is fixedly connected with the rotating bracket 102; the end cap 302 may be mounted to the upright portion 101-2 by fasteners.

With continued reference to fig. 1-2, in one embodiment, the driving component 2 includes a body-fixing component 201 and a shaft-output component 202. The body fixing component 201 is fixed on the base 101 and is rotatably connected with the rotating bracket 102 through the shafting output component 202. In detail: the present invention protects the connection relationship, the position relationship, etc. between the body fixing assembly 201 and the shafting output assembly 202 and other parts of the limiting mechanism, but the specific structures of the body fixing assembly 201 and the shafting output assembly 202 can be realized by the prior art, and the detailed description is omitted here.

The above disclosure is only for the part of the specific embodiments of the present application, but the present application is not limited thereto, and any variations that can be considered by those skilled in the art are intended to fall within the scope of the present application.

Claims

1. The angle-adjustable limiting mechanism comprises a supporting structure and a driving part and is characterized by further comprising an angle adjusting part, wherein the angle adjusting part comprises a linear motion mechanism, two limiting parts and a connecting assembly;

the driving part and the connecting assembly are respectively arranged at two ends of the supporting structure; one end of each of the two limiting parts is rotatably connected with the connecting component; the linear motion mechanisms are arranged on the supporting structure, are connected with the other ends of the two limiting pieces in a one-to-one correspondence manner, and are used for controlling the relative angles of the two limiting pieces;

the locating part is the member, and it includes the bellying, coupling assembling includes spacing portion, spacing portion forms hard spacing to the bellying of two locating parts, controls the rotatory maximum angle of locating part.

2. The angle-adjustable limiting mechanism according to claim 1, wherein the linear motion mechanism comprises a sliding member, and when the angle is adjusted, the sliding member slides to a proper position along the other end of the limiting member and then is locked.

3. The angularly adjustable stop mechanism of claim 2, wherein said linear motion mechanism further comprises a lead screw, a fine adjustment barrel, and a drive member; the driving piece is arranged on the supporting structure and drives the lead screw to rotate, the fine adjustment barrel is in threaded connection with the lead screw, one end of the fine adjustment barrel is connected with the sliding piece, and the fine adjustment barrel and the sliding piece are locked after the angle is adjusted.

4. The angularly adjustable stop mechanism of claim 1, wherein said stop member includes a sleeve portion at one end and said connecting assembly includes a shaft segment, said sleeve portion being received and compressed on said shaft segment.

5. The adjustable angle stop mechanism of claim 1, wherein the coupling assembly comprises a stub shaft coupled to the support structure and an end cap rotatably coupled to the stop member at one end of the stub shaft.

6. The angle adjustable stop mechanism of claim 5, wherein the end cap has an angle mark engraved thereon for determining the angle between the two stop members.

7. The angularly adjustable spacing mechanism of claim 5, wherein said support structure comprises a base and a rotating bracket; the linear motion mechanism is fixed on the base, the short shaft is rotatably connected with the base and fixedly connected with the rotating support, and the driving part is fixed on the base and rotatably connected with the rotating support.

8. The angularly adjustable stop mechanism of claim 7, wherein said drive member comprises a body mount assembly and a shafting output assembly; the body fixing component is fixed on the base and is in rotating connection with the rotating support through the shafting output component.