CN212300775U

CN212300775U - Motor direct-drive type hydraulic vibration table turnover device

Info

Publication number: CN212300775U
Application number: CN202020913064.1U
Authority: CN
Inventors: 王冲; 李亚男; 窦雪川; 郝岩研; 芮鹏; 马平昌
Original assignee: Beijing Institute of Structure and Environment Engineering
Current assignee: Beijing Institute of Structure and Environment Engineering
Priority date: 2020-05-27
Filing date: 2020-05-27
Publication date: 2021-01-05
Anticipated expiration: 2030-05-27

Abstract

The invention provides a motor direct-drive type hydraulic vibration table turnover device which can realize vibration tests of a single-degree-of-freedom hydraulic vibration table in the horizontal and vertical directions; comprises a turnover motor, a coupling and a rotating shaft; the output shaft of the turnover motor is connected with a rotating shaft through a coupler, and the rotating shaft is fixedly connected with one end of a middle supporting shaft of the actuator; the overturning motor and the lower mounting seat are fixedly mounted on the hydraulic vibration table base, and the middle supporting shaft of the actuator drives the middle supporting shaft of the actuator to rotate through forward and reverse rotation of the overturning motor, so that the actuator is driven to be kept in the vertical and horizontal directions.

Description

Motor direct-drive type hydraulic vibration table turnover device

Technical Field

The invention belongs to the field of hydraulic vibration tables, and particularly relates to a motor direct-drive type hydraulic vibration table turnover device which can be used for realizing the purpose that a hydraulic vibration table of a single actuator can complete vibration tests in the horizontal direction and the vertical direction.

Background

The hydraulic vibration table has the advantages of low frequency, large displacement, large thrust, quick response, light weight, small volume, easy installation and the like, and is widely applied to vibration tests in various fields of aerospace, military industry, road simulation, packaging transportation, earthquake and the like.

The hydraulic vibration table is divided into a single degree of freedom and multiple degrees of freedom. The single-degree-of-freedom hydraulic vibration table mainly comprises a horizontal hydraulic vibration table and a vertical hydraulic vibration table, and the corresponding vibration table is selected according to different test conditions of a test piece. At present, most of hydraulic vibration tables with single degree of freedom can be provided with actuator turning devices to meet the requirements of vibration tests in the horizontal and vertical directions.

The driving mode of the hydraulic vibration table turnover device mainly comprises hydraulic motor driving, and motor and transmission chain (belt) combined driving. The hydraulic motor drive has the advantages of stable drive, good self-locking performance and the like, but the hydraulic motor needs a set of hydraulic system for driving and controlling, the system cost is increased, and inconvenience is brought to subsequent maintenance. The motor and the transmission chain (belt) are combined for driving, and the transmission chain (belt) has the characteristics of moderate structure and the like, but has the problems of large occupied area, poor transmission precision and the like.

In order to better solve the problems of the hydraulic vibration table turnover device, the invention provides and designs a motor direct-drive type hydraulic vibration table turnover device which can realize vibration tests of a single-degree-of-freedom hydraulic vibration table in the horizontal direction and the vertical direction. The turnover device has the characteristics of simple structure, small occupied area, high transmission precision, low cost, convenience in operation, strong universality and the like, and can be widely applied to a single-degree-of-freedom hydraulic vibration table test system.

Disclosure of Invention

Technical problem to be solved

The invention provides a motor direct-drive type hydraulic vibration table turnover device which can realize vibration tests of a single-degree-of-freedom hydraulic vibration table in horizontal and vertical directions.

(II) technical scheme

A motor direct-drive type hydraulic vibration table turnover device comprises a turnover motor, a coupler and a rotating shaft; the overturning motor is connected with a rotating shaft through a coupler, and the rotating shaft is fixedly connected with one end of a middle supporting shaft of the actuator; the overturning motor and the lower mounting seat are fixedly mounted on the hydraulic vibration table base, and the middle supporting shaft of the actuator drives the middle supporting shaft of the actuator to rotate through forward and reverse rotation of the overturning motor, so that the actuator is driven to be kept in the vertical and horizontal directions.

The actuator middle support shaft is placed in the groove of the lower mounting seat, and the upper mounting seat and the lower mounting seat clamp the actuator middle support shaft together and fix the actuator middle support shaft; when the device is turned over, the upper mounting seat and the lower mounting seat clamp the middle support shaft of the actuator; when the actuator needs to be turned, the connection between the upper mounting seat and the lower mounting seat is loosened, and the middle supporting shaft of the actuator is ensured to be in a turnable state.

Further, still include gag lever post and two spacing adjusting device, actuator middle support axle one end and rotation axis connection, the other end is fixed with the gag lever post, and spacing adjusting device fixes respectively at last mount pad, down on the mount pad, is connected with the gag lever post, plays limiting displacement to actuator vertical and horizontal direction, simultaneously, through adjusting spacing adjusting device, can carry out level and vertical direction's fine setting to the actuator.

Further, spacing adjusting device includes adjusting screw, spacing installation piece, lock nut, adjusting screw installs on the stopper, and lock nut installs on adjusting screw, and the stopper is fixed mounting respectively on last mount pad and mount pad down, and rotatory adjusting screw can carry out the fine setting of level and vertical direction to the installation axle of actuator, and when being in perpendicular or horizontal direction, lock nut locking adjusting screw plays limiting displacement to actuator vertical and horizontal direction.

Furthermore, the turnover motor adopts an alternating current motor with a power-off braking function, has a power-off self-locking function, and can be stopped at any position by a hydraulic actuator.

The working principle is as follows: the actuator middle supporting shaft is arranged on the turnover device through an upper mounting seat and a lower mounting seat, the whole turnover device is fixedly arranged at one end of the hydraulic vibration table base, the horizontal sliding table is fixedly arranged at the other end of the vibration table base, and the actuator is fixedly connected with the horizontal sliding table through a ox head in the horizontal direction; when the actuator of the hydraulic vibration table needs to be horizontally and vertically turned, the upper mounting seat and the lower mounting seat are connected and loosened, so that the middle supporting shaft of the actuator is in a turnable state, the turning motor is connected with the rotating shaft through the coupler, the rotating shaft is fixedly connected with one end of the middle supporting shaft of the actuator, and the actuator is driven to rotate through forward and reverse rotation of the turning motor, so that the actuator can be kept in the vertical and horizontal directions; when the actuator needs fine adjustment in the horizontal or vertical direction, the adjusting screw rotatably mounted on the limiting mounting block ensures that the limiting rod is in contact with the adjusting screw, and the actuator is ensured to be in the horizontal or vertical direction by utilizing the stretching of the adjusting screw.

(III) advantageous technical effects

The motor direct-drive type hydraulic vibration table turnover device provided by the invention utilizes a conventional servo actuator, a common alternating current motor and a simple mechanical structure, quickly and conveniently realizes the turnover action of the hydraulic actuator in the horizontal and vertical directions, completes the function of realizing vibration tests in the horizontal and vertical directions by a single actuator, and greatly reduces the manufacturing cost of the system. Meanwhile, the hydraulic actuator has a self-locking function, and can be stopped at any position when in special requirements. The positioning is accurate, the operation is simple and easy, and the performance is stable.

The turnover device of the motor direct-drive hydraulic vibration table is simple in structure, easy to process, low in cost and convenient to install, and special customization is not needed. Through expanding application, the device can apply the principle to various mechanical structures and hydraulic systems with overturning requirements, and has a wide application range.

Drawings

FIG. 1: structural composition diagram of the hydraulic vibration table;

wherein: 1-horizontal sliding table; 2-a base; 3-cow head; 4-an actuator; 5-a turning device;

FIG. 2: the hydraulic vibration table turnover device is in a schematic diagram in the horizontal direction;

FIG. 3: the hydraulic vibration table turnover device is in a vertical schematic view;

FIG. 4: the structural composition diagram (I) of the hydraulic vibration table turnover device is shown;

wherein: 6-overturning motor 7-coupling 8-rotating shaft 9-actuator mounting shaft 10-lower mounting seat 11-upper mounting seat

FIG. 5: structural composition diagram (II) of turning device of hydraulic vibration table

Wherein: 12 limiting rod 13 limiting and adjusting device

FIG. 6: the structure schematic diagram of the limiting and adjusting device of the hydraulic vibration table turnover device is shown;

wherein: 14-adjusting screw 15-limiting mounting block 16-locking nut

Detailed Description

In addition to the embodiments described below, the invention is capable of other embodiments or of being practiced or carried out in various ways. It is to be understood, therefore, that the invention is not limited in its application to the details of construction and the arrangements of the components set forth in the following description or illustrated in the drawings. While only one embodiment has been described herein, the claims are not to be limited to that embodiment.

Referring to fig. 1 to 6, the structural composition of the hydraulic vibration table of the present invention is shown in fig. 1, the horizontal and vertical states of the turnover device of the hydraulic vibration table are shown in fig. 2 and 3, the structural composition of the turnover device of the hydraulic vibration table is shown in fig. 4 and 5, and the structure of the limit adjustment device of the turnover device of the hydraulic vibration table is shown in fig. 6.

As shown in fig. 4, the turning device of the motor direct-drive hydraulic vibration table of the present invention includes a turning motor 6, a coupling 7, a rotating shaft 8, a lower mounting seat 10, an upper mounting seat 11, a limiting rod 12 and a limiting adjustment device 13; back shaft 9 is installed on turning device through last mount pad 11 and mount pad 10 down in the middle of the actuator, and one end of whole turning device fixed mounting on hydraulic pressure shaking table base 2, 1 fixed mounting of horizontal slip table are at the other end of shaking table base 2, and during the horizontal direction, actuator 4 passes through

ox head

3 and 1 fixed connection of horizontal slip table.

When hydraulic pressure shaking table needs level and perpendicular upset, will go up mount pad 11 and lower mount pad 10 connection and loosen, make 4 middle back shaft 9 of actuator be in the state of can overturning, upset motor 6 passes through shaft coupling 7 and is connected with

rotation axis

8, 9 one end fixed link of back shaft in the middle of rotation axis 8 and the actuator, it is rotatory to drive actuator 4 through 6 forward and reverse rotations of upset motor, guarantees that actuator 4 can keep at perpendicular and horizontal direction. A limiting rod 12 is installed at the other end of the actuator middle supporting shaft 9, a limiting adjusting device 13 plays a limiting role in the vertical and horizontal directions of the actuator 4, and meanwhile fine adjustment in the horizontal and vertical directions can be conducted on the actuator 4 through adjustment of the limiting adjusting device 13.

Lower mount pad 10 and hydraulic pressure shaking table base 2 fixed connection, actuator middle support shaft 9 is placed in mount pad 10 recess down, goes up mount pad 11 and presss from both sides tight actuator middle support shaft 9 with lower mount pad 10 through the screw. When the actuator 4 works, the upper mounting seat 11 and the lower mounting seat 10 clamp the intermediate supporting shaft 9 of the actuator; when the actuator 4 needs to be turned, the connecting screw between the upper mounting seat 11 and the lower mounting seat 10 is loosened, and the middle supporting shaft 9 of the actuator is ensured to be in a turnable state.

The overturning motor 6 is fixedly arranged on the hydraulic vibration table base 2, an output shaft of the overturning motor 6 is connected with the rotating shaft 8 through the coupler 7, the rotating shaft 8 is fixedly arranged at one end of a middle supporting shaft 9 of the actuator, and the actuator 4 is driven to rotate through forward and reverse rotation of the overturning motor 6, so that the actuator 4 can be kept in the vertical and horizontal directions; the turning motor 6 adopts an alternating current motor with a power-off braking function, has a power-off self-locking function, the hydraulic actuator 4 can be stopped at any position, the turning motor 6 is in a power-off braking state when the actuator 4 works, and the actuator 4 can be overturned to play a role in protection.

As shown in fig. 5 and 6, the limit adjusting device 13 includes an adjusting screw 14, a limit mounting block 15 and a lock nut 16, the limiting rod 12 is fixedly mounted at one end of the actuator middle supporting shaft 9, the adjusting screw 14 is mounted on the limit mounting block 15, the lock nut 16 is mounted on the adjusting screw 14, the two limit mounting blocks 15 are respectively and fixedly mounted on the upper mounting seat 11 and the lower mounting seat 10, the actuator 4 can be finely adjusted in the horizontal and vertical directions by rotating the adjusting screw 14, when the actuator 4 is in the vertical or horizontal direction, the lock nut 16 locks the adjusting screw 14, and the actuator 4 is limited in the vertical and horizontal directions.

The turnover device of the motor direct-drive hydraulic vibration table is simple in structure, easy to process, free of special customization, low in cost and convenient to install. Through expanding application, the device can apply the principle to various mechanical structures and hydraulic systems with overturning requirements, and has a wide application range.

The turning device is not limited to a hydraulic vibration table system, and can be changed and expanded on the premise of not departing from the purpose of the invention, for example, the turning device can be applied to various mechanical structures, hydraulic systems and test equipment with the same turning requirement, and can achieve the same effect, and the turning device is not described in detail in the invention.

Claims

1. A turning device of a motor direct-drive hydraulic vibration table is characterized by comprising a turning motor, a coupler and a rotating shaft; the output shaft of the turnover motor is connected with a rotating shaft through a coupler, and the rotating shaft is fixedly connected with one end of a middle supporting shaft of the actuator; the turnover motor and the lower mounting seat are fixedly mounted on the hydraulic vibration table base, and the middle support shaft of the actuator drives the middle support shaft of the actuator to rotate through forward and reverse rotation of the turnover motor, so that the actuator is guaranteed to be switched in the vertical direction and the horizontal direction.

2. The motor direct-drive hydraulic vibration table turnover device as claimed in claim 1, further comprising a lower mounting seat and an upper mounting seat, wherein the upper part of the lower mounting seat and the lower part of the upper mounting seat are both provided with a groove, the actuator middle support shaft is placed in the lower mounting seat groove, and the upper mounting seat and the lower mounting seat clamp and fix the actuator middle support shaft together; when the device is turned over, the upper mounting seat and the lower mounting seat clamp the middle support shaft of the actuator; when the actuator needs to be turned, the connection between the upper mounting seat and the lower mounting seat is loosened, and the middle supporting shaft of the actuator is ensured to be in a turnable state.

3. The turning device of the motor direct-drive hydraulic vibration table as claimed in claim 1, further comprising a limiting rod and two limiting adjustment devices, wherein one end of the middle supporting shaft of the actuator is fixedly connected with the rotating shaft, the other end of the middle supporting shaft of the actuator is fixedly provided with the limiting rod, the limiting adjustment devices are respectively fixed on the upper mounting seat and the lower mounting seat and connected with the limiting rod, the limiting effect on the vertical and horizontal directions of the actuator is achieved, and meanwhile, fine adjustment in the horizontal and vertical directions of the actuator can be achieved by adjusting the limiting adjustment devices.

4. The turning device of the motor direct-drive hydraulic vibration table as claimed in claim 3, wherein the limiting adjustment device comprises an adjustment screw, a limiting installation block and a locking nut, the adjustment screw is installed on the limiting block, the locking nut is installed on the adjustment screw, the limiting block is fixedly installed on the upper installation seat and the lower installation seat respectively, the adjustment screw is rotated to finely adjust the installation shaft of the actuator in the horizontal direction and the vertical direction, and when the adjustment screw is in the vertical direction or the horizontal direction, the locking nut locks the adjustment screw to limit the actuator in the vertical direction and the horizontal direction.

5. The turning device of the motor direct-drive hydraulic vibration table as claimed in claim 1, wherein the turning motor is an alternating current motor with a power-off braking function, the turning device has a power-off self-locking function, the hydraulic actuator can be stopped at any position, and when the actuator works, the motor is in a power-off braking state and can also protect the actuator from overturning.