CN213812794U

CN213812794U - Double-motor independent driving device for simulating highway transportation test bed

Info

Publication number: CN213812794U
Application number: CN202022708520.1U
Authority: CN
Inventors: 郁南; 乔岐安; 胡军文
Original assignee: Shaanxi Keruidi Electromechanical Equipment Co ltd
Current assignee: Shaanxi Keruidi Electromechanical Equipment Co ltd
Priority date: 2020-11-20
Filing date: 2020-11-20
Publication date: 2021-07-27
Anticipated expiration: 2030-11-20

Abstract

The utility model belongs to the technical field of mechanical environment test equipment, and discloses a double-motor independent driving device of a simulation highway transportation test bed, wherein a working table is arranged at the upper end of a table body frame, a plate spring is clamped at the lower end of the working table, the table top is not fixedly connected with the plate spring, and rubber wheels are fixed at the lower side of the plate spring through a shaft; a driving device is arranged in the table body frame and is connected with the inner side of the table body frame through a plurality of groups of hanging springs; the driving device is provided with a bottom plate, two groups of drums are fixed at two ends of the upper side of the bottom plate through a support, height-adjustable convex blocks which are separated by a certain angle are arranged on the outer edges of the drums, and the upper ends of the drums are in contact with the bottom ends of the rubber wheels. The utility model discloses a four drum independent drive structures of bi-motor, rotatory with the not equidistance through two motors, the cooperation is adjusted the lug height, can make the mesa produce random vibration, has saved the chain drive link, has improved operational reliability greatly, the governing system operational parameter that can be very convenient.

Description

Double-motor independent driving device for simulating highway transportation test bed

Technical Field

The utility model belongs to the technical field of mechanical test equipment, especially, relate to a two motor independent drive of simulation highway transportation test bench.

Background

At present, a road transportation vibration simulation test is a random vibration which basically meets the assumptions of stationarity, ergodicity and normality, and a transportation test bed (hereinafter referred to as a transportation bed) for simulating the vibration environment of automobile road transportation is a mechanical random vibration simulator. When the amplitude probability density function and the power spectral density function of the vibration generated by the transport deck are similar to those of the vibration of the motorway, the transport deck can be considered to substantially reproduce the vibration of the motorway or simulate the vibration of the motorway. The transport platform is mainly used for testing the capability of relevant products subjected to automobile transportation bump, and can be used for replacing automobiles and transferring timed or fixed-distance sports car tests into a laboratory for carrying out.

The traditional transportation table is characterized in that an inner drum wheel with a convex block is driven by a motor connected with a speed reducer, and then a rubber wheel fixed under a test table is driven by a chain wheel, a hanging spring and a pull spring, so that a suspension system consisting of the test table, the rubber wheel and the drum wheel generates stable broadband random vibration similar to the automobile transportation process, and the purpose of simulating automobile transportation in a test room is achieved.

The structure is similar to the chassis mode of an automobile, but only one set of driving motors is provided, the front drum wheel and the rear drum wheel rotate and are transmitted through a chain, the transmission ratio is fixed, and the generation and adjustment variable of a random spectrum is single. In addition, when the loading operation time is long, frequent oiling, lubricating and maintenance are needed, various faults such as chain loosening, slipping, breaking and the like still frequently occur, and the device belongs to one of common faults of the equipment.

For mechanical environment reliability test equipment, the running reliability of the equipment is particularly important, so that the problem to be solved in the prior art is how to design a performance index which can meet the requirement of a test system and is more convenient to adjust, and the running reliability of a transport table can be greatly improved.

Through the above analysis, the problems and defects of the prior art are as follows:

the transmission ratio of the traditional conveying table driving device is fixed and unchanged, the generation and adjustment variable of a random spectrum is single, frequent oiling, lubrication and maintenance are required, and faults are easy to occur.

The difficulty in solving the above problems and defects is: the chain transmission mode of fixed drive ratio can not be solved by adopting an additional structure, the oiling lubrication maintenance of the chain transmission is a necessary operation process, but the whole structure of the chain transmission is suspended in the equipment through a hanging spring, the reliability is low, and the maintenance is very difficult.

The significance of solving the problems and the defects is as follows: a brand new transmission mode is adopted to optimize a driving mode, a link of chain transmission is omitted, the transmission of the chain transmission is split into two independent rotating mechanisms, a maintenance-free self-lubricating bearing is adopted as a rotating support, and two main problems of low reliability and difficult maintenance of the chain transmission are solved.

SUMMERY OF THE UTILITY MODEL

Problem to prior art existence, the utility model provides a two motor independent drive of simulation highway transportation test bench.

The utility model discloses a realize like this, a two motor independent drive of simulation highway transportation test bench is provided with:

a stage body frame;

a working table top is arranged at the upper end of the table body frame, a plate spring is clamped at the lower end of the working table top, the table top is not fixedly connected with the plate spring, and rubber wheels are fixed on the lower side of the plate spring through a shaft;

the driving device is arranged in the table body rack and is connected with the inner side of the table body rack through a plurality of groups of hanging springs;

the driving device is provided with a bottom plate, two groups of drums are fixed at two ends of the upper side of the bottom plate through a support, two height-adjustable lugs which are separated by a certain angle are mounted on the outer edge of each drum, and the upper ends of the drums are in contact with the bottom end of the rubber wheel.

Furthermore, a plurality of hanging spring supports are welded at the upper end inside the table body rack, and the upper ends of the hanging springs are connected with the hanging spring supports.

Further, two groups of motors and speed reducer transmission mechanisms are arranged between the two groups of drums, and each group of motors and speed reducer transmission mechanisms are respectively in transmission connection with one group of drums on the same side.

Furthermore, the two groups of convex blocks on the outer side of the drum wheel have different curvature radiuses, and are separated by a certain angle. So that the drum wheel rotates a circle to drive the rubber wheel to generate a multi-bumping effect.

Combine foretell all technical scheme, the utility model discloses the advantage that possesses and positive effect are:

the utility model discloses a four drum independent drive structures of bi-motor, it is rotatory with different speed through two motors, can make the mesa produce the random vibration, saved the chain drive link, improved the operational reliability greatly. The utility model discloses a bi-motor independent drive structure uses on the transport table, has solved the technical requirement that can satisfy long-time reliable operation, and governing system operating parameter that again can be very convenient, fine assurance system satisfies national relevant standard, and the mechanical properties good reliability of subassembly is high moreover, need not to refuel lubricated maintenance, and simple to operate receives equipment user's high evaluation.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained from the drawings without creative efforts.

Fig. 1 is a schematic structural view of a dual-motor independent driving device of a simulated road transportation test bed provided by the embodiment of the invention.

Fig. 2 is a schematic structural view of a working table of the dual-motor independent driving device of the simulated road transportation test bed provided by the embodiment of the present invention.

In the figure: 1. a base plate; 2. hanging a spring; 3. a spring hanging bracket; 4. a work table; 5. a plate spring; 6. a drum; 7. a rubber wheel; 8. a motor and a speed reducer transmission mechanism; 9. a bump; 10. a table body frame.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Problem to prior art existence, the utility model provides a two motor independent drive of simulation highway transportation test bench, it is right to combine the figure below the utility model discloses do detailed description.

As shown in fig. 1, the dual-motor independent driving device of the simulated road transportation test bed provided by the embodiment of the invention is provided with a bed frame 10;

the upper end of the table body frame 10 is provided with a working table top 4, the lower end of the working table top 4 is clamped with a plate spring 5, the working table top 4 is not fixedly connected with the plate spring 5, and the lower side of the plate spring 5 is fixed with a rubber wheel 7 through a shaft; a driving device is arranged in the table body frame 10 and is connected with the inner side of the table body frame 10 through a plurality of groups of hanging springs 2; the driving device is provided with a bottom plate 1, two groups of drums 6 are fixed at two ends of the upper side of the bottom plate 1 through a support, two height-adjustable lugs 9 which are separated by a certain angle are arranged on the outer edge of each drum 6, and the upper ends of the drums 6 are in contact with the bottom ends of rubber wheels 7. A plurality of hanging spring supports 3 are welded at the upper end inside the table body frame 10, and the upper ends of the hanging springs 2 are connected with the hanging spring supports 3. Two groups of motors and speed reducer transmission mechanisms 8 are arranged between the two groups of drums 6, and each group of motors and speed reducer transmission mechanisms 8 are respectively in transmission connection with one group of drums 6 on the same side.

The embodiment of the utility model provides an in whole movable mass of simulation highway transportation test bench hang the spring through a plurality of groups of both sides and hang on the frame. The whole movable mass comprises a table top, a rubber wheel, a drum wheel, a reduction box, a bottom plate and the like. The working table surface is elastically connected with the rubber wheel through a plate spring. Each pair of rubber wheels is seated on the drum wheel. The table top is in a stable equilibrium state. Two groups of lugs with different curvature radiuses and a certain angle are symmetrically arranged on the drum wheel. The phase of the front drum wheel and the rear drum wheel on the same side can randomly change along with the rotating speed of the motor, and the left drum wheel and the right drum wheel are at the same speed. The starting motor passes through the reducer transmission mechanism. The drum wheel is driven to rotate and jack up the rubber wheel to move the table-board. The structure is a double-motor four-drum wheel independent driving structure, and the two motors rotate at different speeds, so that the table top can generate random vibration. The chain transmission link is saved, and the operation reliability is greatly improved.

When the utility model is used, two groups of independent motor reducer transmission mechanisms 8 are used as driving power sources to drive the four drums 6 to rotate, the rotating speed of the motor reducer transmission mechanisms 8 and the height of the convex blocks 9 are respectively adjusted, the working table top 4 moves up and down under the drive of the rotation of the drum wheel 6 through the transmission of the rubber wheel 7 and the plate spring 5, the random up-and-down movement of the working table top 4 drives a plurality of groups of hanging springs 2 which connect the bottom plate 1 and the table body frame 10 to generate stretching and rebounding, the continuous rotation of the drum wheel 6 can lead the working table top 4 to generate continuous random vibration, and a plurality of groups of hanging springs 2 connecting the bottom plate 1 and the table body frame 10 are continuously stretched and rebounded, thereby generating two kinds of vibration with different frequencies, and the system parameters of the transport platform can be adjusted by adjusting the rotating speed of the motor speed reducer transmission mechanism 8, the height of the convex block 9 and the rigidity of the hanging springs 2 or the quantity of the hanging springs.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be covered within the protection scope of the present invention by those skilled in the art within the technical scope of the present invention.

Claims

1. The utility model provides a two motor independent drive of simulation highway transportation test bench which characterized in that, two motor independent drive of simulation highway transportation test bench are provided with:

a stage body frame;

the driving device is provided with a bottom plate, two groups of drums are fixed at two ends of the upper side of the bottom plate through a support, two height-adjustable lugs separated by a certain angle are arranged on the outer edge of each drum, and the upper end of each drum is in contact with the bottom end of the rubber wheel;

and two groups of motors and speed reducer transmission mechanisms are arranged between the two groups of drums, and each group of motors and speed reducer transmission mechanisms are respectively in transmission connection with one group of drums at the same side.

2. The dual-motor independent driving device for the simulated road transport test bed as claimed in claim 1, wherein a plurality of hanging spring brackets are welded at the upper end inside the frame of the bed body, and the upper ends of the hanging springs are connected with the hanging spring brackets.

3. The dual-motor independent driving device for a simulated road transport test bed as claimed in claim 1, wherein the two sets of projections on the outside of said drum have different radii of curvature and are angularly spaced.