CN217483741U

CN217483741U - Quality characteristic test platform structure based on gas ball bearing

Info

Publication number: CN217483741U
Application number: CN202221525706.6U
Authority: CN
Inventors: 李金阳; 司竹君; 刘诚
Original assignee: Northeast Forestry University
Current assignee: Northeast Forestry University
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2022-09-23
Anticipated expiration: 2032-06-17

Abstract

The utility model relates to a quality characteristic test platform structure based on gas ball bearing, which comprises a frame, by 4 support posts, 1 upper plate, 1 middle plate, 1 lower plate and 32 aluminium alloy angle yards are constituteed, wherein 4 support posts are the aluminium alloy, 4 support posts pass through aluminium alloy angle yard and bolt fixed connection with the upper plate downside, 4 support posts pass through aluminium alloy angle yard and bolt fixed connection with the upper plate upside, 4 support posts pass through aluminium alloy angle yard and bolt fixed connection with the middle plate downside, be used for measuring the barycenter and the moment of inertia of object, the structure divide into frame, test platform, torsion device, moment device, rotary device and locking device; the test platform is positioned at the top of the whole platform, the upper end of the test platform is fixedly connected with the table-board, and compressed air is introduced between the segment structure at the lower end and the air-float ball socket to perform frictionless movement. The mass center and the rotational inertia of an object can be measured on the same instrument, the clamping times are reduced, and the measurement precision is improved.

Description

Quality characteristic test platform structure based on gas ball bearing

Technical Field

The utility model belongs to the electronic measuring instrument field is a quality characteristic test platform structure based on gas ball bearing particularly.

Background

With the development of aerospace technology, it is an important ring in satellite research to measure the quality characteristics of satellites on the ground. The gas ball bearing quality characteristic measuring platform is a new scheme for achieving the aim. The mass characteristics mainly comprise the mass, the mass center, the rotational inertia, the inertia product and the like of the object, and are key parameters for automatic control and test of the high-speed remote flying object. The mass characteristic testing equipment can accurately measure parameters related to the motion of the object, such as the mass center, the rotational inertia and the like of the object. The moment of inertia is a physical quantity of the inertia of an object in rotation, is related to the total mass, the shape and the position of a rotating shaft of the object, is related to the moment of inertia as far as the problem of rotation is concerned, and is an important quality characteristic parameter for researching, designing and controlling the motion rule of the rotating object. When the early quality characteristic testing equipment measures different quality characteristic parameters of an object, different testing equipment is required to be used for carrying out loading and unloading for many times. Because the quality characteristics need to be measured more items and have internal relation with each other, when the quality characteristics are transferred on different test equipment, a uniform measurement reference is difficult to ensure, the influence of human errors is increased, and the measurement precision is difficult to ensure. When the high-precision mass characteristic is measured, the friction between the traditional fulcrum and the rotor can generate larger interference torque, so that the measurement precision of the mass characteristic is influenced. For a rigid body with a simpler shape, the moment of inertia around a certain axis can be calculated by a mathematical method, but for an object with a more complex shape, such as a flying body like a satellite, the shape of the object is irregular, the mass distribution is not uniform, and the calculation by a common mathematical method is very difficult, so the measurement is carried out by an experimental method in most cases. Similarly, for an object with a complicated shape, the quality parameter of the object needs to be measured by an experimental method, so that the method for researching the quality characteristic parameter measurement has great significance.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a quality characteristic test platform structure based on gas ball bearing accomplishes the measurement to object barycenter and inertia to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a quality characteristic test platform structure based on a gas ball bearing comprises a rack, and is composed of 4 support columns, 1 upper plate, 1 middle plate, 1 lower plate and 32 aluminum profile angle codes, wherein 4 support columns are aluminum profiles, 4 support columns are fixedly connected with the lower sides of the upper plates through the aluminum profile angle codes and bolts, 4 support columns are fixedly connected with the upper sides of the middle plates through the aluminum profile angle codes and the bolts, 4 support columns are fixedly connected with the lower sides of the middle plates through the aluminum profile angle codes and the bolts, and 4 support columns are fixedly connected with the upper sides of the lower plates through the aluminum profile angle codes and the bolts;

furthermore, the measuring platform consists of a ball frame a, a ball frame b, a gas ball bearing, a stabilizing pipe, a torsion bar, a rubber ring a, a rubber ring b, a torsion bar flange plate and a rotary table, wherein the rotary table is fixedly connected with the upper side of the gas ball bearing through bolts;

furthermore, the torsion device consists of a torsion motor connecting piece, a torsion motor frame, a torsion motor, a torsion driving wheel and a torsion driven wheel, wherein the torsion motor connecting piece is fixedly connected with the lower side of the upper middle plate through a bolt;

further, the torque device is composed of a cylindrical gas bearing, 2 planar air-floatation guide rails, 2 pin fixing seats, a torque motor rod, a torque motor flange plate, a torque motor seat and a torque motor connecting piece, wherein the 2 pin fixing seats are fixedly connected with the middle plate through bolts;

further, the planar air-float guide rail consists of an air-float guide rail a, an air-float guide rail b and a PC interface, the air-float guide rail a is fixedly connected with the upper side of the middle plate through bolts, the air-float guide rail a is fixedly connected with the air-float guide rail b through bolts, the air-float guide rail a and the air-float guide rail b are sealed through a rubber ring c and a rubber ring d, and the air-float guide rail a is fixedly connected with the PC interface through threads;

further, the rotating device comprises a rotating motor connecting piece, a rotating motor base, a rotating motor and an electromagnetic clutch, wherein the rotating motor connecting piece is fixedly connected with the upper side of the lower plate through bolts;

furthermore, the locking device is composed of a torsion bar flange plate, a locking square block and 4 electromagnetic locks, the torsion bar flange plate is fixedly connected with the lower side of the stabilizing pipe through screws, the locking square block is fixedly connected with the torsion bar flange plate through bolts, and the electromagnetic locks are fixedly connected with the upper side of the lower plate through bolts.

Compared with the prior art, the beneficial effects of the utility model are that: the utility model is used for measuring the mass center and the moment of inertia of an object, and has a structure comprising a frame, a test platform, a torsion device, a moment device, a rotating device and a locking device; the test platform is positioned at the top of the whole platform, the upper end of the test platform is fixedly connected with the table board, and compressed air is introduced between the ball segment structure at the lower end of the test platform and the air-float ball socket to carry out friction-free movement. When no other constraint exists, the measured object can rotate on the plane at will; the moment device consists of a gas cylindrical bearing and a plane air-float guide rail. The inner side of the gas cylindrical bearing is in clearance fit with the outer side of the stabilizing pipe, and compressed air is introduced during working to form a cylindrical gas film, so that the gas ball bearing can rotate around the plumb spindle without friction; when the rotational inertia is measured, the platform rotates to a preset position and then is started, the locking device is a linear electromagnetic valve which can be electrified for a long time, and when the lock tongue is in an extending state, the cube cannot rotate; when the bolt is in the retracted state, the cube can rotate freely. Therefore, the utility model discloses can realize measuring the barycenter and the inertia of object on same instrument, reduce the clamping number of times, improve measurement accuracy.

Drawings

The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural diagram of a mass characteristic testing platform based on a gas ball bearing

FIG. 2 is a schematic view of a measuring platform

FIG. 3 is a schematic view of a torsion device

FIG. 4 is a schematic view of a torque device

FIG. 5 is a schematic view of a plane air-float guide rail structure

FIG. 6 is a schematic view of the structure of the rotating device and the locking device

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a technical scheme: referring to fig. 1 and 6, a mass property testing platform structure based on a gas ball bearing comprises a frame, and is composed of 4 supporting

upright posts

11, 1

upper plate

3, 1

upper plate

4, 1

middle plate

5, 1

lower plate

6 and 32 aluminum profile angle codes 12, wherein the 4 supporting upright posts 11 are aluminum profiles, the 4 supporting upright posts 11 are fixedly connected with the lower sides of the upper plates 3 through the aluminum profile angle codes 12 and bolts, the 4 supporting upright posts 11 are fixedly connected with the upper sides of the upper plates 4 through the aluminum profile angle codes 12 and the bolts, the 4 supporting upright posts 11 are fixedly connected with the lower sides of the middle plates 5 through the aluminum profile angle codes 12 and the bolts, and the 4 supporting upright posts 11 are fixedly connected with the upper sides of the lower plates 6 through the aluminum profile angle codes and the bolts;

referring to fig. 2, further, the measuring platform is composed of a ball frame a2, a ball frame b13, a gas ball bearing 14, a stabilizing pipe 17, a torsion bar 19, a rubber ring a15, a rubber ring b16, a torsion bar flange 18 and a turntable 1, the turntable 1 is fixedly connected with the upper side of the gas ball bearing 14 through bolts, the gas ball bearing 14 is fixedly connected with the upper end of the torsion bar 19 through a stud, the torsion bar 19 is connected with the torsion bar flange 18 through bolts, the torsion bar flange 18 is connected with the lower end of the gas ball bearing 14 through bolts, the stabilizing pipe 17 is connected with the lower side of the gas ball bearing 18 through bolts, the ball frame 1 is fixedly connected with the upper side of the upper plate 3 through bolts, the ball frame a2 is connected with the lower side of the ball frame b13 through bolts, and the ball frame a2 is sealed with the ball frame b13 through the rubber ring a15 and the rubber ring b 16;

referring to fig. 3, further, the torsion device 10 is composed of a torsion motor connector 21, a torsion motor frame 23, a torsion motor 22, a torsion driving wheel 20, and a torsion driven wheel 24, the torsion motor connector 21 is fixedly connected with the lower side of the upper middle plate 4 through a bolt, the torsion motor frame 23 is fixedly connected with the torsion motor connector 21 through a bolt, the torsion motor 22 is fixedly connected with the torsion motor frame 23 through a bolt, the torsion motor 22 is fixedly connected with the torsion driving wheel 20 through a key, the torsion driving wheel 20 is in transmission fit with the torsion driven wheel 24 through a gear, and the torsion driven wheel 24 is in interference fit with the stabilization tube 17;

referring to fig. 4, further, the torque device 9 is composed of a cylindrical gas bearing 31, 2 planar air-bearing guide rails, 2 pin fixing seats 31, a torque motor rod 28, a torque motor flange 35, a torque motor 26, a torque motor seat 25, and a torque motor connecting piece 27, wherein the 2 pin fixing seats 31 are fixedly connected with the middle plate 5 through bolts, the cylindrical gas bearing 32 is connected with the pin fixing seats 31 through pins, the cylindrical gas bearing 32 is connected with the torque motor rod 28 through pins, the torque motor rod 28 is fixedly connected with the torque motor flange 35 through bolts, the torque motor flange 35 is fixedly connected with the torque motor 26 through keys, the torque motor 26 is fixedly connected with the torque motor seat 25 through bolts, and the torque motor seat 25 is fixedly connected with the torque motor connecting piece 27 through bolts;

referring to fig. 5, further, the planar air-float guide rail is composed of an air-float guide rail a32, an air-float guide rail b34 and a PC interface 33, the air-float guide rail a32 is fixedly connected with the upper side of the middle plate 5 through bolts, the air-float guide rail a32 is fixedly connected with the air-float guide rail b34 through bolts, the air-float guide rail a32 and the air-float guide rail b34 are sealed through a rubber ring c36 and a rubber ring d37, and the air-float guide rail a32 is fixedly connected with the PC interface 33 through threads;

referring to fig. 6, further, the rotating device 8 is composed of a rotating electrical machine connecting piece 42, a rotating electrical machine base 44, a rotating electrical machine 43 and an electromagnetic clutch 38, the rotating electrical machine connecting piece 42 is fixedly connected with the upper side of the lower plate 6 through bolts, the rotating electrical machine base 44 is fixedly connected with the rotating electrical machine connecting piece 42 through bolts, the rotating electrical machine 43 is fixedly connected with the rotating electrical machine base 44 through bolts, the rotating electrical machine 43 is fixedly connected with the electromagnetic clutch 38 through keys, and the electromagnetic clutch 38 is in interference fit with the stabilizing pipe 19;

referring to fig. 6, further, the locking device 7 is composed of a torsion bar flange 39, a

locking block

40, and 4 electromagnetic locks 41, the torsion bar flange 39 is fixedly connected with the lower side of the torsion bar 19 through screws, the locking block 40 is fixedly connected with the torsion bar flange 39 through bolts, and the electromagnetic locks 41 are fixedly connected with the upper side of the lower plate 6 through bolts.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a quality characteristic test platform structure based on gas ball bearing which characterized in that: the aluminum profile support frame comprises a frame, and is composed of 4 support columns, 1 upper plate, 1 middle plate, 1 lower plate and 32 aluminum profile angle codes, wherein the 4 support columns are aluminum profiles, the 4 support columns are fixedly connected with the lower sides of the upper plates through the aluminum profile angle codes and bolts, the 4 support columns are fixedly connected with the upper sides of the middle plates through the aluminum profile angle codes and bolts, the 4 support columns are fixedly connected with the lower sides of the middle plates through the aluminum profile angle codes and bolts, and the 4 support columns are fixedly connected with the upper sides of the lower plates through the aluminum profile angle codes and bolts; furthermore, the measuring platform consists of a ball frame a, a ball frame b, a gas ball bearing, a stabilizing pipe, a torsion bar, a rubber ring a, a rubber ring b, a torsion bar flange plate and a rotary table, wherein the rotary table is fixedly connected with the upper side of the gas ball bearing through bolts; furthermore, the torsion device consists of a torsion motor connecting piece, a torsion motor frame, a torsion motor, a torsion driving wheel and a torsion driven wheel, wherein the torsion motor connecting piece is fixedly connected with the lower side of the upper middle plate through a bolt; further, the torque device is composed of a cylindrical gas bearing, 2 planar air-flotation guide rails, 2 pin fixing seats, a torque motor rod, a torque motor flange plate, a torque motor seat and a torque motor connecting piece, wherein the 2 pin fixing seats are fixedly connected with the middle plate through bolts; further, the planar air-floating guide rail consists of an air-floating guide rail a, an air-floating guide rail b and a PC interface, the air-floating guide rail a is fixedly connected with the upper side of the middle plate through bolts, the air-floating guide rail a is fixedly connected with the air-floating guide rail b through bolts, the air-floating guide rail a and the air-floating guide rail b are sealed through a rubber ring c and a rubber ring d, and the air-floating guide rail a is fixedly connected with the PC interface through threads; further, the rotating device consists of a rotating motor connecting piece, a rotating motor base, a rotating motor and an electromagnetic clutch, wherein the rotating motor connecting piece is fixedly connected with the upper side of the lower plate through a bolt; furthermore, the locking device comprises a torsion bar flange plate, a locking square block and 4 electromagnetic locks, the torsion bar flange plate is fixedly connected with the lower side of the stabilizing pipe through screws, the locking square block is fixedly connected with the torsion bar flange plate through bolts, and the electromagnetic locks are fixedly connected with the upper side of the lower plate through bolts.