CN106596048B

CN106596048B - Plane motion structure with vertical plane

Info

Publication number: CN106596048B
Application number: CN201710044307.5A
Authority: CN
Inventors: 寇雨丰; 肖龙飞; 郭英豪; 彭涛; 李俊
Original assignee: Shanghai Jiaotong University
Current assignee: Shanghai Jiaotong University
Priority date: 2017-01-19
Filing date: 2017-01-19
Publication date: 2023-05-23
Anticipated expiration: 2037-01-19
Also published as: CN106596048A

Abstract

The invention discloses a vertical plane movement mechanism, which comprises: the mounting bracket is square-cylinder-shaped and vertically arranged; the output plate is positioned at the bottom of the mounting bracket and is connected with an external test model; the driving assembly is vertically arranged on the outer walls of the two opposite faces of the mounting bracket, is hinged with the output plate and is used for driving the output plate to perform heave, pitch or coupling motion; and a stabilizing assembly vertically installed at inner walls of the other two opposite sides of the square cylindrical mounting bracket and hinged to the output plate for restraining the output plate from horizontal deviation. Compared with the existing vertical plane motion mechanism, the invention has the advantages of wider motion frequency, higher motion precision, longer service life and the like by adopting the stabilizing component.

Description

Plane motion structure with vertical plane

Technical Field

The invention relates to the fields of ship and ocean engineering and mechanical engineering, in particular to a vertical plane movement mechanism.

Background

The vertical plane motion mechanism is an important facility for researching hydrodynamic coefficients of a water surface ship, an ocean platform and an underwater motion body and further researching motion performance of the underwater motion body. The conventional vertical plane motion mechanism often adopts transmission methods such as a hydraulic cylinder, an electric cylinder, a ball screw, a cross sliding frame and the like, and has the defects of large motion inertia, limited running frequency, large vibration, easy deformation, lower motion precision and the like. For example: the Chinese patent publication No. 201020500845.4, named vertical plane motion mechanism, discloses a vertical plane motion mechanism, which adopts a servo motor to drive an eccentric slide sinusoidal generating device, and changes the amplitude by adjusting the eccentricity of the eccentric slide, thus having the problems of small swing amplitude, complex structure, lower motion accuracy and the like. The Chinese patent application No. 201310566470.X discloses a vertical plane movement mechanism, wherein the movement of the mechanism is driven by a servo motor combined with an electric cylinder to replace the traditional mechanical sine generating device, so that the heave, pitch and roll movements of a ship model are realized, but the mechanism has the problems of serious mechanism abrasion, poor positioning precision and low output movement frequency.

Disclosure of Invention

The invention provides a vertical plane motion structure, which solves the problems of limited motion frequency, easy deformation and low motion precision in the prior art.

In order to solve the above technical problems, the present invention provides a vertical plane motion mechanism, including: the mounting bracket is square-cylinder-shaped and vertically arranged; the output plate is positioned at the bottom of the mounting bracket and is connected with an external test model; the driving assembly is vertically arranged on the outer walls of the two opposite faces of the mounting bracket, is hinged with the output plate and is used for driving the output plate to perform heave, pitch or coupling motion; and a stabilizing assembly vertically installed at inner walls of the other two opposite sides of the square cylindrical mounting bracket and hinged to the output plate for restraining the output plate from horizontal deviation.

Preferably, the driving components are two groups symmetrically arranged.

Preferably, the driving assembly includes: the servo motor is located at the top of the mounting bracket, the linear module is arranged on the outer wall of the mounting bracket and connected with the servo motor, and the vertical push rod is connected with the linear module and hinged with the output plate through a push rod hinge. Furthermore, the linear module adopts a synchronous belt type linear module, and the output motion stroke is large, the motion frequency is high and the motion noise is small; the synchronous belt type linear module is fixed on the square cylindrical mounting bracket, so that the straightness of the output linear motion is ensured, and the transverse deflection is prevented.

Preferably, the push rod hinge includes: the device comprises a pressing plate, a sliding block, a hinge support and a rotating shaft, wherein the hinge support is fixed on the output plate, the pressing plate is fixed on the hinge support in parallel, and the sliding block is arranged on the pressing plate and hinged with the vertical push rod through the rotating shaft.

Preferably, the pressing plate is provided with a long round hole, and the long axis of the long round hole is parallel to the length direction of the output plate. According to the invention, the long round hole is formed in the pressing plate, and the rotating shaft of the push rod hinge passes through the sliding block, so that the push rod hinge is not blocked when the driving assembly outputs pitching/rolling motion, the stress concentration is reduced, and the loss is reduced.

Preferably, the stabilizing assembly comprises: the stabilizing rod is hinged with the output plate.

Preferably, the stabilizer bar is hinged to the center of the output plate by a stabilizer bar hinge.

Preferably, the stabilizer bar hinge includes: the hinge plate is arranged on the inner side of the stabilizer bar and is connected with the hinge seat through the intermediate shaft. Specifically, the invention utilizes the stabilizer bar moving along the linear guide rail to restrain the output plate from horizontal deflection, so that on one hand, the center of the test model is always at a designated test position, and on the other hand, the invention plays roles of improving the movement precision of the output plate and reducing the abrasion of the oblong hole.

Preferably, an adjusting washer is arranged between the hinge plates, and the adjusting washer is sleeved on the intermediate shaft.

Preferably, the intermediate shaft is at the same height as the installation center of the rotating shaft of the push rod hinge, and is equidistant from the rotating shafts on both sides.

Compared with the prior art, the invention adopts the cooperation of the stabilizing component and the driving component, can restrict the output plate when driving the output plate to do heave, pitch or coupling movement, so that the output plate does not generate horizontal offset, plays the roles of improving the movement precision of the output plate and reducing the abrasion, and can effectively prolong the service life of the push rod hinge. The invention is applied to the fields of ships and ocean engineering, and can be used for experimental study on the aspects of operability, viscous damping and the like. Compared with the existing vertical plane motion mechanism, the stable component has the advantages of wider motion frequency, higher motion precision, longer service life and the like.

Drawings

FIG. 1 is a schematic view of a vertical plane motion mechanism of the present invention;

FIG. 2 is a cross-sectional view taken along the A-A plane of FIG. 1;

FIG. 3 is a cross-sectional view taken along the B-B plane of FIG. 1;

FIG. 4 is a schematic illustration of the connection of the pushrod hinge and stabilizer hinge according to the present invention;

fig. 5 is a schematic cross-sectional view showing the connection of the push rod hinge and the stabilizer bar hinge of the present invention.

The figure shows: 1-mounting a bracket;

2-driving components, 201-servo motors, 202-linear modules and 203-vertical push rods;

3-stabilizing components, 301-linear guide rails and 302-stabilizing rods;

4-an output board;

5-push rod hinges, 501-pressing plates, 502-sliding blocks, 503-hinge supports and 504-rotating shafts;

6-stabilizer bar hinge, 601-hinge plate, 602-intermediate shaft, 603-hinge seat, 604-adjusting washer.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the drawings of the present invention are in simplified form and are not to scale precisely, but rather are merely intended to facilitate a clear and concise description of embodiments of the present invention.

As shown in fig. 1 to 5, the vertical plane movement mechanism of the present invention includes: a mounting bracket 1, a driving assembly 2, a stabilizing assembly 3 and an output plate 4.

Specifically, the mounting bracket 1 is square cylindrical and vertically placed; the driving assembly 2 is provided with two groups, is vertically arranged on the outer walls of two opposite faces of the mounting bracket 1, and the bottom is hinged with the output plate 4; the two groups of driving components 2 cooperate with and drive the output plate 4 to perform heave, pitch or coupling motions; the stabilizing component 3 is vertically arranged on the inner walls of the other two opposite faces of the mounting bracket 1, and the bottom of the stabilizing component is hinged with the output plate 4 and is used for restraining the output plate 4 so as not to generate horizontal offset; the output plate 4 serves as a motion output for transmitting motion to the test model to which it is connected.

Referring to fig. 1, the driving assembly 2 includes: the device comprises a servo motor 201 positioned at the top of a mounting bracket 1, a linear module 202 arranged on the outer wall of the mounting bracket 1 and connected with the servo motor 201, and a vertical push rod 203 connected with the linear module 202, wherein the vertical push rod 203 is hinged with an output plate 4 through a push rod hinge 5. Further, the servo motor 201 drives the linear module 202, the linear module 202 drives the vertical push rod 203 to move vertically, the lower end of the vertical push rod 203 is hinged to two ends of the output plate 4 through the push rod hinge 5, and the two vertical push rods 203 drive the output plate 4 to perform heave, pitch or coupling motion of the two.

Further, the linear module 202 adopts a synchronous belt type linear module, and the output motion stroke is large, the motion frequency is high, and the motion noise is small; the synchronous belt type linear module is fixed on the mounting bracket 1, so that the straightness of the output linear motion is ensured, and the transverse deflection is prevented.

Preferably, referring to fig. 3, the push rod hinge 5 includes: the device comprises a pressing plate 501, a sliding block 502, a hinge support 503 and a rotating shaft 504, wherein the hinge support 503 is fixed on the output plate 4, the pressing plate 501 is fixed on the hinge support 503 through screws, a long round hole is formed in the pressing plate 501, the long axis of the long round hole is parallel to the length direction of the output plate 4, and the size of the long round hole is suitable for the interval change when two vertical push rods 203 do asynchronous motion. The sliding block 502 is arranged in the oblong hole and is hinged with the vertical push rod 203 through a rotating shaft 504. Specifically, by forming the oblong hole in the pressure plate 501, the rotation shaft 504 of the push rod hinge 5 passes through the slider 502, and the slider 502 can slide in the oblong hole of the pressure plate 501, so that the push rod hinge 5 is not locked when the driving assembly 2 outputs the pitch/roll motion, and stress concentration and loss are reduced.

As shown in fig. 2, the stabilizing assembly 3 includes: a pair of linear guide rails 301 vertically installed on the inner walls of the other two opposite sides of the mounting bracket 1, and a stabilizer bar 302 positioned at a central position between the two vertical push rods 203 and fixedly connected with the vertical push rods 203. Further, the stabilizer bar 302 is tightly matched with the linear guide rail 301 and can slide along the linear guide rail 301, that is, the stabilizer bar 302 is constrained by the linear guide rail 301 to move only along the linear guide rail 301 in the vertical direction, the lower end of the stabilizer bar 302 is hinged with the center of the output plate 4 through the stabilizer bar hinge 6, so that the output plate 4 is constrained not to generate horizontal offset, on one hand, the center of a test model is always at a designated test position, and on the other hand, the functions of improving the movement precision of the output plate 4 and reducing the abrasion of a slotted hole are achieved.

Referring to fig. 4 and 5, the stabilizer bar hinge 6 includes: hinge plate 601, jackshaft 602 and hinge seat 603, wherein, the hinge seat 603 passes through the screw to be fixed in the center of output board 4, hinge plate 601 sets up the stabilizer bar 302 inboard and pass through jackshaft 602 with the hinge seat 603 is connected, be provided with adjustment packing ring 604 between the hinge plate 601, this adjustment packing ring 604 cover is established on jackshaft 602, can prevent that hinge plate 601 from taking place big deformation in the installation.

Preferably, the middle shaft 602 is at the same height as the installation center of the rotation shaft 504 of the push rod hinge 5, and is at the same distance from the rotation shafts 504 at both sides, so that deformation and jamming during the movement of the vertical plane motion mechanism can be avoided.

In summary, the stabilizing component 3 is matched with the driving component 2, so that the output plate 4 can be restrained from horizontal deflection while the output plate 4 is driven to do heave, pitch or coupling motion, the motion precision of the output plate 4 is improved, the abrasion is reduced, and the service life of the push rod hinge 5 can be effectively prolonged. The invention is applied to the fields of ships and ocean engineering, and can be used for experimental study on the aspects of operability, viscous damping and the like. Compared with the existing vertical plane motion mechanism, the stable component has the advantages of wider motion frequency, higher motion precision, longer service life and the like.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims

1. A vertical plane motion structure comprising:

the mounting bracket is square-cylinder-shaped and vertically arranged;

the output plate is positioned at the bottom of the mounting bracket and is connected with an external test model;

the driving assembly is vertically arranged on the outer walls of the two opposite faces of the mounting bracket, is hinged with the output plate and is used for driving the output plate to perform heave, pitch or coupling motion;

and

The stabilizing component is vertically arranged on the inner walls of the other two opposite faces of the square cylindrical mounting bracket, is hinged with the output plate and is used for restraining the output plate so as not to generate horizontal offset;

the drive assembly includes: the servo motor is positioned at the top of the mounting bracket, the synchronous belt type linear module is arranged on the outer wall of the mounting bracket and connected with the servo motor, and the vertical push rod is connected with the synchronous belt type linear module and hinged with the output plate through a push rod hinge;

the push rod hinge includes: the device comprises a pressing plate, a sliding block, a hinge support and a rotating shaft, wherein the hinge support is fixed on the output plate, the pressing plate is fixed on the hinge support, and the sliding block is arranged on the pressing plate and hinged with the vertical push rod through the rotating shaft;

the pressing plate is provided with a long round hole, the long axis of the long round hole is parallel to the length direction of the output plate, and the sliding block slides in the long round hole; and the size of the oblong hole is suitable for the interval change when the two vertical push rods do asynchronous movement.

2. A vertical plane motion structure as claimed in claim 1 wherein the drive assemblies are in two sets symmetrically disposed.

3. A vertical plane motion structure as claimed in claim 1 wherein said stabilizing assembly comprises: the stabilizing rod is hinged with the output plate.

4. A vertical plane motion structure as claimed in claim 3 wherein the stabilizer bar is hinged to the centre of the output plate by a stabilizer bar hinge.

5. A vertical plane motion structure as claimed in claim 4 wherein said stabilizer bar hinge comprises: the hinge plate is arranged on the inner side of the stabilizer bar and is connected with the hinge seat through the intermediate shaft.

6. A vertical plane motion structure as claimed in claim 5 wherein an adjustment washer is provided between the hinge plates and is sleeved on the intermediate shaft.

7. A vertical plane motion structure as claimed in claim 5 wherein said intermediate shaft is at the same height as the mounting center of the rotational axis of said push rod hinge and is equidistant from the rotational axes of both sides.