CN207020207U - Accelerometer test system - Google Patents

Abstract

The utility model discloses a kind of accelerometer test system, belong to field of measuring technique, including mechanical part and control section, the mechanical part includes base and platform body and motor, the motor includes motor casing, the stator that is detachably fixed with motor casing and the rotor for being arranged concentrically on bore of stator, the rotor coordinates in one end of bore of stator and stator for gap, the other end stretches out motor casing and the central integral of platform body is set, and pass through double row angular contact bearing and the rotatable fixation of motor casing, the control section includes signal sensing element, collection plate, conducting ring, power panel, computing board, driving plate and display, and it is arranged on power interface and data-interface on the round baffle ring.The utility model improves the rigidity and stationarity of test system by mechanical part, realizes the accurate measurement of accelerometer, makes test be full automatic mechanical operation by control section, improves testing efficiency and precision.

Description

Accelerometer test system

Technical field

The utility model belongs to field of measuring technique, and in particular to a kind of survey for carrying out accelerometer performance and accurately testing Test system.

Background technology

Accelerometer is the instrument for measuring acceleration.When object will be produced acceleration by dynamic loading, due to dynamic loading It is difficult accurate measurement in engineering, can first measures acceleration and calculate dynamic loading again.Meanwhile by the instantaneous grasp to acceleration, Locus and the movement locus of object can also be further known to.As it is to be understood that where each instantaneous aircraft, rocket and naval vessels Locus, its acceleration can continuously be measured (see gyropanel inertial navigation system) by inertial navigation, then by product Partite transport is calculated to obtain velocity component, and integration obtains the position coordinates signal in a direction again, and the instrument of three coordinate directions is surveyed Just synthesis goes out curve movement and provides the locus where per instantaneous ROV amount result.

But the solution that the detection of prior art accelerometer self performance has not been found also.Particularly to some Special occasion, during such as field work, high rotating speed (at least 1000r/min) how is provided with low-voltage DC, at present or skill Art blank, in addition prior art also be difficult to the stability requirement for meeting test system, usually require that in the high rotating speed bars of 1000r/min The bounce of part lower surface is less than 0.01mm, and these problems constrain the accurate detection to accelerometer self performance.

Utility model content

In view of this, the purpose of this utility model is to provide that a kind of low-voltage high speed, stability are good, safe can control automatically The accelerometer test system of system, can solve the problems, such as that stability existing for prior art is poor, rotating speed is low.

The purpose of this utility model is achieved through the following technical solutions：

Accelerometer test system, including mechanical part and control section,

The mechanical part includes base and the platform body and motor that are fixed on the base, the base bag Include bottom plate and justify baffle ring with bottom plate appearance profile identical, uniformly set on the same diameter circumference of top surface of the platform body It is equipped with multiple accelerometer fixed bits, the motor includes motor casing, the stator being detachably fixed with motor casing and concentric The rotor of bore of stator is arranged on, the motor casing is with the cylindrical housings being open, and vertically opening upwards It is detachably secured in the round baffle ring, the rotor coordinates in one end of bore of stator and stator for gap, and the other end stretches out The central integral of motor casing and platform body is set, and rotatable solid with motor casing by double row angular contact bearing in opening It is fixed,

The mechanical part is also enclosed including protection and portal frame, and the protection is enclosed is detachably secured to platform body for multistage The metal tabs of periphery, the portal frame both ends are fixed on bottom plate,

The control section includes signal sensing element, collection plate, conducting ring, power panel, computing board, driving plate and display Device, and the power interface and data-interface being arranged on the round baffle ring,

The signal sensing element, which is arranged on accelerometer fixed bit and contacted with tested accelerometer, receives and transmits quilt Signal is surveyed, collection plate is fixed on the top of platform body, and is electrically connected with signal sensing element,

The central region of the conducting ring through portal frame is connected with portal frame, and is electrically connected with collection plate,

The power panel, computing board and driving plate are each attached on metal tabs, and respectively with conducting ring, power interface and Data-interface is electrically connected, and the display is electrically connected with data-interface.

Further, the conducting ring is arranged concentrically on the top surface of the platform body by shaft coupling.

Further, the openend of the motor casing is provided with adpting flange and closure, the adpting flange and closure It is connected by fastener.

Further, the metal tabs sets two panels altogether, and is fastened on the same of portal frame both ends by fastener respectively On side.

Further, locking screw keyhole and dowel hole are provided with the bottom plate.

Further, in addition to protective cover, the outer surface of the protective cover are bonded with the inner surface of circle baffle ring.

The beneficial effects of the utility model：

The utility model is wholely set the rigidity that can improve test system by rotor and platform body, strengthens the flat of operation Stability, meanwhile, larger radial load and axial load can be born by double row angular contact bearing, so as to limit the two of axle aspects Axial displacement, traveling comfort can be further enhanced, in addition, also making test be turned into for full-automatic mechanical by control section Industry, manpower expenditure can be reduced, reduces testing expense, improves testing efficiency and precision.

Other advantages, target and feature of the present utility model will be explained in the following description to a certain extent State, and to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, or Person can be instructed from practice of the present utility model.Target of the present utility model and other advantages can be said by following Bright book is realized and obtained.

Brief description of the drawings

In order that the purpose of this utility model, technical scheme and advantage are clearer, below in conjunction with accompanying drawing to this practicality It is new to be described in further detail, wherein：

Fig. 1 is the stereogram of the utility model accelerometer test system；

Fig. 2 is the sectional view of utility model accelerometer test system；

Fig. 3 is Fig. 2 top view；

Fig. 4 is the stereogram that the utility model accelerometer test system removes protective cover；

Fig. 5 is the sectional view of the utility model motor；

Fig. 6 is Fig. 5 top view.

Description of reference numerals：

1- motors；2- platform bodies；3- motor casings；4- stators；5- rotors；6- double row angular contact bearings；7- connections Flange；8- closures；9- accelerometer fixed bits；10- bases；11- bottom plates；12- justifies baffle ring；13- power interfaces；14- data Interface；15- protections are enclosed；16- portal frames；17- conducting rings；18- shaft couplings；19- collection plates；20- power panels；21- computing boards； 22- driving plates；23- protective covers；24- displays.

Embodiment

Hereinafter with reference to accompanying drawing, preferred embodiment of the present utility model is described in detail.It is it should be appreciated that it is preferred that real Example is applied only for illustrating the utility model, rather than in order to limit the scope of protection of the utility model.

As shown in Figures 1 to 6, the accelerometer test system of the present embodiment, including mechanical part I and control section II,

Mechanical part I, which includes base 10 and the platform body 2 and motor 1 that are fixed on base, base 10, includes bottom Plate 11 and with bottom plate appearance profile identical justify baffle ring 12, multiple locking screw keyholes and multiple alignment pins are provided with bottom plate Hole, fixed when being easy to use with fixture, power interface 13 and data-interface 14 are provided with circle baffle ring, for connecting with outside Energization source and transmitting test data, motor 1 include motor casing 3, stator 4 and rotor 5, and motor casing is the circle with an opening Cylindrical shell, and vertically opening upwards are detachably secured to justify in baffle ring, motor is set upward vertically, stator is removable Unload and be fixed in motor casing, rotor is arranged on bore of stator center, and rotor is in uniform gap in one end of bore of stator and stator Coordinate, i.e., with certain electric field space, that is, the electromagnetic field space of electric energy and mechanical energy conversion, in equal magnetomotive feelings Under condition, gap is bigger, and magnetic resistance is also bigger, and the magnetic field intensity formed is also weaker, and the other end of rotor stretches out motor casing with putting down The central integral of playscript with stage directions body is set, can strengthen rigidity it is horizontal, avoiding prior art from existing using motor shaft scheme, rigidity is small, runs The defects of stationarity difference, at the same the present embodiment in extending area by double row angular contact bearing 6 and the rotatable fixation of motor casing, it is double Row angular contact bearing can bear larger radial load and axial load, so as to limit the both sides axial displacement of axle, can enter One step strengthens the stationarity of rotor operation, and in the present embodiment, the openend of motor casing is provided with adpting flange 7 and closure 8, even Acting flange is attached fixation with closure by screw or bolt etc., while is also convenient for the assembling and maintenance of stator and rotor； The present embodiment is evenly arranged with multiple accelerometers on same diameter circumference in the plane of the top surface of platform body and fixed Position 9, in actual use, multiple accelerometers can be arranged as required to and carry out while measure, to improve measurement efficiency.This reality Apply in example, mechanical part also encloses 15 and portal frame 16 including protection, and protection is enclosed is detachably secured to platform body periphery for multistage Metal tabs, metal tabs is machined to multiple bendings by bending, easy to process, and can increase intensity；The two of portal frame Individual supported end is fixed on bottom plate, specifically, the metal tabs of the present embodiment sets two panels altogether, and is fastened respectively by fastener On the same side at portal frame both ends, i.e., the both ends of any metal tabs are joined with bolts in two supported ends of portal frame Same side on, as shown in figure 4, same metal tabs is fixed on A, B face or C, D face, connection is very convenient and reliable.

Control section II includes signal sensing element, collection plate 19, conducting ring 17, power panel 20, computing board 21, driving plate 22 and display 24, and the power interface and data-interface being arranged on round baffle ring, specifically：

Signal sensing element, which is arranged on accelerometer fixed bit and contacted with tested accelerometer, receives and transmits tested letter Number, collection plate is fixed on the top of platform body, and is electrically connected with signal sensing element；

For test signal is sent out, the present embodiment takes following structure：Collection plate is arranged concentrically on platform body Top, the lower section of collection plate set shaft coupling 18, and conducting ring is electrically connected with collection plate, in the presence of motor, platform sheet Body rotates at a high speed, and the moved end and collection plate, shaft coupling for driving conducting ring 17 rotate at a high speed, and conducting ring 17 is dynamic in rotary course End remains with static side to be connected, that is, keeps the unimpeded of signalling channel, because the output end of conducting ring passes through the middle part of portal frame Region simultaneously connects with power panel, computing board and driving plate respectively, can realize following functions respectively：Each plate can obtain by power panel Electric energy during work, test signal can be handled by computing board, can be driven by driving plate according to processing information Dynamic and adjustment motor operating rate, to meet test request, in the present embodiment, to strengthen fixed effect, pass through bolt or spiral shell Conducting ring and portal frame are attached fixation by nail,

In the present embodiment, power panel, computing board and driving plate are each attached on metal tabs, and respectively with power interface and Data-interface is electrically connected, and display is electrically connected with data-interface, can be real-time by display by data-interface by test data Show, with timely processing or adjustment.

In the present embodiment, in addition to protective cover 23, the outer surface of protective cover is bonded with the inner surface of circle baffle ring, make to cover into Good airproof performance, muting function is good, avoids the noise effect to environment, meanwhile, it can also further enhance security.

The present embodiment is wholely set the rigidity that can improve test system by rotor and test system, strengthens the steady of operation Property, meanwhile, larger radial load and axial load can be born by double row angular contact bearing, so as to limit the both sides of axle Axial displacement, traveling comfort can be further enhanced, in addition, also making test be turned into for full-automatic mechanical by control section Industry, manpower expenditure can be reduced, reduces testing expense, improve testing efficiency and precision, and also enclose and testing by protection During hand touching or test block throw away and hurt sb.'s feelings, improve security.After tested, it is low using 24 volts by the design of the program Pressure direct current can reach 1000r/min as power drives and rotate at a high speed, meanwhile, platform body rotates at a high speed in 1000r/min Under the conditions of end face run-out be less than 0.01mm, realize the design object that accelerometer performance is accurately tested.

Finally illustrate, above example is only unrestricted to illustrate the technical solution of the utility model, although ginseng The utility model is described in detail according to preferred embodiment, it will be understood by those within the art that, can be to this The technical scheme of utility model is modified or equivalent substitution, and without departing from the objective and scope of the technical program, it all should Cover among right of the present utility model.

Claims (6)

1. accelerometer test system, it is characterised in that：Including mechanical part and control section,

The mechanical part, which includes base and the platform body and motor that are fixed on the base, the base, includes bottom Plate and justify baffle ring with bottom plate appearance profile identical, be evenly arranged with the same diameter circumference of top surface of the platform body Multiple accelerometer fixed bits, the motor include motor casing, the stator being detachably fixed with motor casing and are arranged concentrically In the rotor of bore of stator, the motor casing is the cylindrical housings with an opening, and vertically opening upwards are removable Unload and be fixed in the round baffle ring, the rotor coordinates in one end of bore of stator and stator for gap, and the other end stretches out motor The central integral of shell and platform body is set, and in opening by double row angular contact bearing and the rotatable fixation of motor casing,

The mechanical part is also enclosed including protection and portal frame, and the protection is enclosed is detachably secured to platform body periphery for multistage Metal tabs, the portal frame both ends are fixed on bottom plate,

The control section includes signal sensing element, collection plate, conducting ring, power panel, computing board, driving plate and display, And power interface and data-interface on the round baffle ring are arranged on,

The signal sensing element, which is arranged on accelerometer fixed bit and contacted with tested accelerometer, receives and transmits tested letter Number, collection plate is fixed on the top of platform body, and is electrically connected with signal sensing element,

The central region of the conducting ring through portal frame is connected with portal frame, and is electrically connected with collection plate,

The power panel, computing board and driving plate are each attached on metal tabs, and respectively with conducting ring, power interface and data Interface is electrically connected, and the display is electrically connected with data-interface.

2. accelerometer test system according to claim 1, it is characterised in that：The conducting ring is concentric by shaft coupling It is arranged on the top surface of the platform body.

3. accelerometer test system according to claim 1, it is characterised in that：The openend of the motor casing is provided with Adpting flange and closure, the adpting flange are connected with closure by fastener.

4. accelerometer test system according to claim 1, it is characterised in that：The metal tabs sets two panels altogether, And it is fastened on respectively by fastener on the same side at portal frame both ends.

5. accelerometer test system according to claim 1, it is characterised in that：Clamping screw is provided with the bottom plate Hole and dowel hole.

6. according to any described accelerometer test systems of claim 1-5, it is characterised in that：Also include protective cover, it is described The outer surface of protective cover is bonded with the inner surface of circle baffle ring.