CN207923458U - A kind of auto parts and components mould measurement support system - Google Patents

Abstract

The utility model is specifically related to a kind of high certainty of measurement, intrinsic frequency and the adjustable auto parts and components mould measurement support system of rigidity.The support system is made of portal frame, electric block, gas spring, jack etc.；Electric block provides vertical lifting point for suspension type mould measurement, and mating micro actuator enables measured piece to keep basic horizontality, spring assembly that can change stiffness by itself by the connection in series-parallel of adjustment spring in test；Gas spring provides level for shelf type mould measurement and shelves a little, mating jack enables measured piece to keep horizontality substantially in test, gas spring can change stiffness by itself according to the different of measured piece by adjusting the blowing pressure, the temperature for accurately controlling gas spring itself, improves measurement accuracy.

Description

A kind of auto parts and components mould measurement support system

Technical field

The utility model is related to auto parts and components Modal detection technical fields, and in particular to a kind of auto parts and components mode survey Try support system.

Background technology

The overall stiffness characteristic of vehicle structure can not only be investigated by carrying out model analysis to automobile, and can instruct people couple Vehicle structure optimizes and response analysis.When carrying out modal test, the Support Position of part and support construction are to final Experimental result has larger impact；When carrying out experimental modal test, since same structure can have under different boundary conditions Different modal parameter, so the frequency response function measurement data of one group of satisfaction in order to obtain, the selection of the supporting way of measured piece It is very important.

Currently used supporting way has following two：Ground supports, free support.Ground supports are by certain in structure A little points are fixedly connected with the ground, this is easily achieved in theory, i.e., simply leaves out the coordinate of corresponding points, but is doing It is difficult that a basis or ground fixation experimental member are provided when experiment.So we are by the way of free support, free support Formula is freely to be supported on measurand in space, and structure will be presented and be determined by its quality and inertia in this state Rigid body mode, not only without bending but also without deformation, thus we can determine whether its rigid body mode and quality and inertial properties. We are typically test specimen to be supported on one very soft " spring " (to shelve), or sling test specimen with rubber rope in experiment (suspension), by test specimen be placed in it is a kind of it is approximate in the state of free support.

Therefore two aspects require the structure of free support：First, suspension or supporting point should select mould as much as possible State node；Second is that suspension strop or support device want sufficiently soft, ensure that rigid body resonant frequency is (logical less than the first rank elasticity resonant frequency It often requires to be less than 10%).By consulting pertinent literature and patent it is found that in existing related mould measurement support system patent Fixed supporting point is only provided mostly, cannot be satisfied actual testing requirement, and the rigidity of fixed supporting point can not usually be adjusted Section, can not also ensure measuring accuracy.

In order to ensure measuring accuracy, it is desirable that the highest frequency of measured piece accounts for the minimum Elastic mode intrinsic frequency of support construction 1/3 hereinafter, so when measured piece is different, intrinsic frequency possessed by support construction also should be different, therefore it is required that mode is surveyed Examination support system allows for adjusting the intrinsic frequency of a whole set of support system.And it is special in previous related mould measurement support system Such function is not provided in profit, this also will greatly influence measuring accuracy.

In addition, in order to obtain test data accurate as possible, measured piece is needed to keep horizontality as possible, and this is previous Related patents in be not directed to such structure design.

The principle of traditional gas spring is to be filled with inert gas (air spring) in closed pressure cylinder to make in cavity Several times or tens times of pressure superatmospheric, be less than the cross-sectional area of piston using the cross-sectional area of piston rod to produce Raw pressure difference pours two sealed gas chambers to contact with each other (oil respectively come the movement or liquid for realizing piston rod with gas Gas spring), due to the fundamental difference in principle, gas spring has significant advantage than common spring：Speed relatively slowly, Dynamic force change is little, is easy to control.Since the hydro-pneumatic spring stiffness by itself in gas spring is larger, it is difficult to which it is low just to meet some The application environment (such as mould measurement field) for spending requirement, so air spring is focused on herein, when gas is frequently pressed When contracting, since the gas of some can be converted into thermal energy so that the gas temperature inside air spring changes, closed Under environment, when gas temperature changes, pressure can also change, and then the overall stiffness of spring is directly caused to occur Variation.And conventional air bellows are inflow and the discharge by directly adjusting plenum interior air, or change intrinsic gas Volume change the stiffness variation of spring, there is no by the temperature change of spring inner air, this amount is taken into account, also without Method controls the temperature change of spring inner by controlling inflow and the discharge of gas, this accurately utilizes air in many needs The field of spring variation rigidity characteristic such as (mould measurement) is the defect for being difficult to ignore.And air bullet is needed in mould measurement field Spring is capable of providing larger stiffness variation range, and the variation of rigidity also wants easily controllable.And such air spring is answered Mould measurement field is used, also adjusts air spring internal gas pressure in real time with mating offer air compressor machine is wanted, this is just improved Testing cost.

Invention content

The utility model aim is to provide a kind of high certainty of measurement, intrinsic frequency and the adjustable auto parts and components mode of rigidity Test support system.

For achieving the above object, technical solution used by the utility model is：A kind of auto parts and components mode survey Support system is tried, the support system includes portal frame, and portal frame includes under lower fixed longeron is constituted with lower fixed cross beam The end of rectangular frame, lower fixed longeron and lower fixed cross beam is connected firmly together by trip bolt and disc-shaped base respectively；Under Column is arranged in the corner location of rectangular frame, and the upper end of column is connect with upper rectangular frame, upper rectangular frame by upper fixed longeron, Upper fixed cross beam is constituted, and guide rail is set up on the upper surface of upper fixed longeron, the idler wheel that can be rolled along is arranged on guide rail, idler wheel The rotatable end for being sleeved on hollow upper moved cross beam of shaft, upper moved cross beam are erected between two upper fixed longerons；On T-type sliding slot is arranged in the bottom surface of moved cross beam along its length, is installed in T-type sliding slot and rolls guide wheel, rolled and passed through in guide wheel A piece support shaft, in support shaft installation ride joist steel fork, ride and electric block be installed in the support shaft of joist steel fork lower section, electric block Lower end hangs with vertical deviation micro actuator；The lower end of vertical deviation micro actuator is connect with variable rate spring component；It is fixed vertical under two Setting can be along the lower moved cross beam of lower fixed longeron length direction sliding between beam；Mechanical type manual thousand is set up on lower moved cross beam Jin top；Saturated vapour pressure variation rigidity gas spring is set up on mechanical type manual jack.

Preferably, the column is rectangular tube, and Vertically tube, pipe upper end and horizontally disposed circle is arranged in the upper end of column Disk connects, and ear mount is arranged in disk upper surface, and wedge type steel pin, wedge is arranged in the respective end face of fixed longeron, upper fixed cross beam Shaped steel pin is inserted into the ear mount being arranged on disk.

Preferably, divide between the disc-shaped base and column, between column and lower fixed cross beam, column and lower fixed longeron It is not fastened together using bolt by L-type reinforcing plate of the side with through-hole.

Preferably, multigroup peace for installing mechanical hand jack is arranged in the lower moved cross beam along its length Hole is filled, the both ends lower surface of lower moved cross beam has T-type sliding block, the longitudinal chute being arranged on T-type sliding block and lower fixed longeron to coordinate.

Preferably, the mechanical type manual jack and saturated vapour pressure variation rigidity gas spring, mechanical type manual are very heavy It is detachably connected respectively using bolt or bolt constitutional formula between top and lower moved cross beam.

Preferably, the variable rate spring component includes hanging ring, and hanging ring hangs over the lower end of vertical deviation micro actuator, hanging ring It being fixedly connected with horizontally disposed upper hanging plate below, multiple horizontally disposed connecting plates are arranged in the lower section interval of upper hanging plate, on Between hanging plate and connecting plate, groups of springs is respectively set between adjacent connection plates, each groups of springs includes multiple spiral shells being arranged in parallel Revolve spring.

Preferably, the vertical deviation micro actuator includes the band screw rod of two coaxial arrangements, and band screw rod is respective Screw portion is inserted into respectively in screw hole retainer with threaded hole.

Preferably, the upper side of the column and the one end for the reinforcement girt strip being obliquely installed are bolted, and reinforce The other end of girt strip and the underrun of upper fixed longeron are bolted, and the girt strip of reinforcing is the square that both ends carry flanged plate Shape square tube.

Preferably, the saturated vapour pressure variation rigidity gas spring includes upper cover plate, and gas is installed in the lower surface of upper cover plate Pressure sensor；The lower surface of upper cover plate is contacted with the upper surface of closed rubber air chamber, rubber air chamber include connection upper chamber, Lower chamber, lower chamber is interior to inject liquid；Lower chamber bottom is equipped with adding thermal resistance, liquid temperature sensor；Adding thermal resistance and external electrical Source line is connected.

The utility model has the advantages that：Portal frame can suspend measured piece in midair, diaphragm type pneumatic spring can shelve by Part is surveyed, measured piece is allow to be tested under two states；And two states can test respectively can also joint test, carry significantly High working efficiency；Vertical deviation micro actuator and the cooperation of mechanical type manual jack so that measured piece is hanging and shelving two kinds of quilts Vertical position can be accurately adjusted under survey state, to obtain best tested state as possible, while keeping measured piece to begin as possible Final position is in horizontality；Saturated vapour pressure variation rigidity gas spring is used cooperatively with spring assembly so that measured piece suspension and The intrinsic frequency of support construction can be changed by shelving under two kinds of tested states, and simple operation；Saturated vapour pressure variation rigidity gas Body spring changes the temperature of air in the temperature of rubber layer in rubber air chamber and rubber air chamber while changing rigidity, Therefore the saturated vapour pressure variation rigidity gas spring can be used for simulating normal air spring in long-time or the feelings of vigorous motion Condition, when measuring automobile body modal relevant parameter with air spring suspension precision closer with automobile actual travel situation It greatly improves.

Description of the drawings

Fig. 1 is auto parts and components mould measurement support system general assembly drawing；

Fig. 2 is variable rate spring component diagram；

Fig. 3 is upper hanging plate vertical view；

Fig. 4 is connecting plate vertical view

Fig. 5 is connecting plate front view；

Fig. 6 is to reinforce girt strip scheme of installation；

Fig. 7 is upper moved cross beam and axis of rolling scheme of installation；

Fig. 8 is electric block and upper moved cross beam scheme of installation；

Fig. 9 is the front view of vertical deviation micro actuator；

Figure 10 is the sectional view of membrane gas spring.

Each parts title is as follows in attached drawing 1- attached drawings 10：Longeron is fixed on 1-；The upper moved cross beams of 2-；3- columns；Under 4- Fixed longeron；5- pedestals；Fixed cross beam under 6-；Moved cross beam under 7-；8- mechanical type manual jack；9- saturated vapor bucklings are rigid Spend gas spring；10- variable rate spring components；11- vertical deviation micro actuators；12- reinforces girt strip；13- minisize electric hoists； The upper fixed cross beams of 14-；21- annulus is linked up with；22- springs；23- upper hanging plates；24- connecting plates；51- wedge type steel pins；The 64- axis of rolling； 65- idler wheels；74- rolls guide wheel；75- support shafts；76- rides joist steel fork；81- band screw rods；82- screw hole retainers；91- air pressure transmissions Sensor；92- liquid；93- adding thermal resistances；94- upper cover plates；95- liquid temperature sensors；96- external power cords.

Specific implementation mode

Such as Fig. 1-auto parts and components mould measurement support systems shown in Fig. 10, including portal frame, portal frame includes lower solid Determine the lower rectangular frame that longeron 4 and lower fixed cross beam 6 are constituted, the end of lower fixed longeron 4 and lower fixed cross beam 6 is respectively by tight Gu screw connects firmly together with disc-shaped base 5；Column 3, the upper end of column 3 and upper rectangle is arranged in the corner location of lower rectangular frame Frame connects, and upper rectangular frame is made of upper fixed longeron 1, upper fixed cross beam 14, sets up and lead on the upper surface of upper fixed longeron 1 The idler wheel 65 that can be rolled along, the rotatable end for being sleeved on hollow upper moved cross beam 2 of the shaft of idler wheel 65 are arranged on guide rail for rail Portion, upper moved cross beam 2 are erected between two upper fixed longerons 1；The side wall of the upper moved cross beam 2 is uniformly distributed along its length T-type sliding slot is arranged in the bottom surface of multiple adjustment screw holes, upper moved cross beam 2 along its length, is installed in T-type sliding slot and rolls guide wheel 74, it rolls and passes through a support shaft 75 in guide wheel 74, installed in support shaft 75 and ride joist steel fork 76, ride the support shaft of joist steel fork lower section Upper installation electric block 13, the lower end of electric block 13 hang with vertical deviation micro actuator 11；The lower end of vertical deviation micro actuator 11 It is connect with variable rate spring component 10；

The lower moved cross beam 7 that is arranged between longeron 4 and can be slided along lower 4 length direction of fixed longeron is fixed under two；Lower work Mechanical type manual jack 8 is set up on dynamic crossbeam 7；Saturated vapour pressure variation rigidity gas bullet is set up on mechanical type manual jack 8 Spring 9.

The column 3 is rectangular tube, and Vertically tube is arranged in the upper end of column 3, and pipe upper end connects with horizontally disposed disk It connects, ear mount, fixed longeron 1,14 respective end face of upper fixed cross beam setting wedge type steel pin 51, wedge is arranged in disk upper surface Shaped steel pin 51 is inserted into the ear mount being arranged on disk.

Divide between the disc-shaped base 5 and column 3, between column 3 and lower fixed cross beam 4, column 3 and lower fixed longeron 6 It is not fastened together using bolt by L-type reinforcing plate of the side with through-hole.

Multigroup mounting hole for installing mechanical hand jack 8 is arranged in the lower moved cross beam 7 along its length, The both ends lower surface of lower moved cross beam 7 has T-type sliding block, the longitudinal chute being arranged on T-type sliding block and lower fixed longeron 4 to coordinate.

The mechanical type manual jack 8 and saturated vapour pressure variation rigidity gas spring 9, mechanical type manual jack 8 with It is detachably connected respectively using bolt or bolt constitutional formula between lower moved cross beam 7.

The variable rate spring component 10 includes hanging ring 21, and hanging ring 21 hangs over the lower end of vertical deviation micro actuator 11, hangs Ring 21 is fixedly connected with horizontally disposed upper hanging plate 23 below, and multiple horizontally disposed companies are arranged in the lower section interval of upper hanging plate 23 Between upper hanging plate 23 and connecting plate 24, groups of springs is respectively set in fishplate bar 24 between adjacent connection plates 24, each groups of springs includes more A helical spring being arranged in parallel.

The vertical deviation vertical deviation micro actuator 11 includes the band screw rod 81 of two coaxial arrangements, band screw rod 81 Respective screw portion is inserted into respectively in screw hole retainer 82 with threaded hole.

The upper side of the column 3 and the one end for the reinforcement girt strip 12 being obliquely installed are bolted, and reinforce girt strip The underrun of 12 other end and upper fixed longeron 1 is bolted, and the girt strip 12 of reinforcing is that both ends carry flanged plate Rectangular square tube.

The membrane gas spring 9 includes upper cover plate 94, and baroceptor 91 is installed in the lower surface of upper cover plate 94；On The lower surface of cover board 94 is contacted with the upper surface of rubber air chamber, and rubber air chamber includes the upper chamber of connection, lower chamber, in lower chamber Inject liquid 92；Lower chamber bottom is equipped with adding thermal resistance 93, liquid temperature sensor 95；Adding thermal resistance 93 and 96 phase of external power cord Connection.

When testing parts, according to the specific size and structure of parts, and specific test request selection branch Support mode, that is, suspension type or shelf type.When selecting suspension type, measured piece is moved into below the portal frame in support system, if by Surveying part is inconvenient to move, and can also arrange support system above measured piece on the spot, according to test request, one is selected on measured piece To four suspension points, moved cross beam 2 makes it be moved along the length direction of upper fixed longeron 1 in movement, while can adjust electronic The position of cucurbit 13 makes 13 transverse shifting of electric block；Four lifting points of this system are moved to the selected hitch point of measured piece Top accounts for 1/3 principle of the minimum elasticity modulus intrinsic frequency of structure according to rigid body mode highest frequency, selectes variable rate spring In component 10 in the quantity of suitable groups of springs and each groups of springs spring quantity, then by variable rate spring component 10 Lower end is connected with measured piece using bolt or hook, is finally hung up measured piece with minisize electric hoist 13.In order to as possible The horizontal attitude for keeping measured piece, first passes through electric block 13 and carries out rough height adjusting, finally by turning vertical deviation Band screw rod 81 on micro actuator 11 carries out the fine tuning of the horizontal attitude of measured piece, and then ensures measuring accuracy.

When selecting shelf type, first according to test request, on measured piece selecting one to four shelves a little.When measured piece matter When amount is smaller, mechanical type manual jack 8 can be adjusted to suitable position, then measured piece is put up；When measured piece quality compared with When big, measured piece can be sling by electric block 13, then be put into the cover board 94 of saturated vapour pressure variation rigidity gas spring 9 On, then the internal pressure of saturated vapour pressure variation rigidity gas spring 9 is adjusted to appropriate location.In order to keep measured piece as possible Horizontal attitude, the respective vertical height for shelving platform can be adjusted by adjusting the trident rocking arm of mechanical type manual jack 8, So that measured piece keeps horizontal attitude as possible, and then ensure measuring accuracy.

The stiffness equivalent method of the saturated vapour pressure variation rigidity gas spring 9 is：Select a suitable target air pressure Value, liquid temperature sensor 95 start to detect fluid temperature and first be fed back to controller offer, and baroceptor 91 starts to detect gas chamber Internal pressure is simultaneously first fed back to controller offer.Controller is according to the saturated vapor pressure fitting formula of the liquid at this time, further according to Target air pressure value, order power supply provides an input voltage value appropriate, and then controls the thermal discharge of adding thermal resistance 93, due to liquid Body 92 has different saturated vapor pressures at different temperature, and increases with the raising of temperature, is based on saturated vapor at this time The plenum interior pressure of the variation rigidity gas spring 9 of principle is pressed to start to change；When baroceptor 91 detects gas chamber in real time After internal pressure reaches target air pressure value, adding thermal resistance 93 stops heating；Temperature inside upper chamber slightly declines, inside Steam can be re-converted to liquid.Baroceptor 91 detects that plenum interior pressure is repeatedly above-mentioned less than after desired value at this time Step so that the internal pressure of saturated vapour pressure variation rigidity gas spring 9 is in appropriate location always.

Saturated vapour pressure variation rigidity gas spring 9 does not change internal gas pressure by inflation/deflation, but passes through control The temperature of liquid 92 and then change internal pressure, does not need optional equipment air compressor machine, reduce testing cost, and have low The features such as rigidity, stiffness variation range is wide and rigidity controllability is strong.Its basic principle is in confined condition, in certain temperature Under, it is in pressure possessed by the steam to balance each other with solid or liquid and is known as saturated vapour pressure, same substance is in different temperatures Under have different saturated vapour pressures, and increase with the raising of temperature, and the saturated vapour pressure of much liquid and temperature Numerous studies have been carried out in relationship forefathers, already have the higher fitting formula of precision, and this also just facilitates control plan Slightly design, in addition the saturated vapour pressure of pure solvent be more than solution saturated vapour pressure；For same substance, solid saturation is steamed Air pressure is less than the saturated vapour pressure of liquid, and the liquid 92 can be neat liquid, can also be solid-liquid intermixture.

Since saturated vapour pressure variation rigidity gas spring 9 changes rubber layer in rubber air chamber while changing rigidity The temperature of air in temperature and rubber air chamber, therefore the saturated vapour pressure variation rigidity gas spring 9 can be used for simulating commonly Air spring for a long time or acutely under usable condition, temperature increase so as to cause the feelings that change of normal air spring rate Condition, when measuring automobile body modal relevant parameter with air spring suspension precision closer with automobile actual travel situation It greatly improves.

Claims (9)

1. a kind of auto parts and components mould measurement support system, it is characterised in that：The support system includes portal frame, gantry Frame includes the lower rectangular frame that lower fixed longeron (4) is constituted with lower fixed cross beam (6), lower fixed longeron (4) and lower fixed cross beam (6) end is connected firmly together by trip bolt and disc-shaped base (5) respectively；Column is arranged in the corner location of lower rectangular frame (3), the upper end of column (3) is connect with upper rectangular frame, and upper rectangular frame is by upper fixed longeron (1), upper fixed cross beam (14) structure At, guide rail is set up on the upper surface of upper fixed longeron (1), and the idler wheel (65) that can be rolled along is set on guide rail, idler wheel (65) The rotatable end for being sleeved on hollow upper moved cross beam (2) of shaft, upper moved cross beam (2) are erected at two upper fixed longerons (1) between；T-type sliding slot is arranged in the bottom surface of upper moved cross beam (2) along its length, is installed in T-type sliding slot and rolls guide wheel (74), it rolls and passes through a support shaft (75) in guide wheel (74), installed in support shaft (75) and ride joist steel fork (76), ride under joist steel fork Installation electric block (13) in the support shaft of side, the lower end of electric block (13) hangs with vertical deviation micro actuator (11)；Vertical position The lower end for moving micro actuator (11) is connect with variable rate spring component (10)；Setting can be along lower solid between fixing longeron (4) under two Determine the lower moved cross beam (7) of longeron (4) length direction sliding；Mechanical type manual jack (8) is set up on lower moved cross beam (7)； Saturated vapour pressure variation rigidity gas spring (9) is set up on mechanical type manual jack (8).

2. auto parts and components mould measurement support system according to claim 1, it is characterised in that：The column (3) is Vertically tube is arranged in the upper end of rectangular tube, column (3), and pipe upper end is connect with horizontally disposed disk, on the upper surface of disk Ear mount, fixed longeron (1), the respective end face setting wedge type steel pin (51) of upper fixed cross beam (14), wedge type steel pin are set (51) it is inserted into the ear mount being arranged on disk.

3. auto parts and components mould measurement support system according to claim 1, it is characterised in that：The disc-shaped base (5) pass through side respectively between column (3), between column (3) and lower fixed cross beam (6), column (3) and lower fixed longeron (4) L-type reinforcing plate of the face with through-hole is fastened together using bolt.

4. auto parts and components mould measurement support system according to claim 1, it is characterised in that：The lower moved cross beam (7) be arranged along its length it is multigroup for installing the mounting holes of mechanical hand jack (8), the two of lower moved cross beam (7) Lower surface is held to be equipped with T-type sliding block, the longitudinal chute being arranged on T-type sliding block and lower fixed longeron (4) coordinates.

5. auto parts and components mould measurement support system according to claim 1, it is characterised in that：The mechanical type manual Between jack (8) and saturated vapour pressure variation rigidity gas spring (9), mechanical type manual jack (8) and lower moved cross beam (7) It is detachably connected respectively using bolt or bolt constitutional formula.

6. auto parts and components mould measurement support system according to claim 1, it is characterised in that：The variation rigidity bullet Spring component (10) includes hanging ring (21), and hanging ring (21) hangs over the lower end of vertical deviation micro actuator (11), hanging ring (21) with below Horizontally disposed upper hanging plate (23) is fixedly connected, and the connecting plate (24) of multiple levels is arranged in the lower section interval of upper hanging plate (23), on Between hanging plate (23) and connecting plate (24), groups of springs is respectively set between adjacent connection plates (24), each groups of springs includes multiple The helical spring being arranged in parallel.

7. auto parts and components mould measurement support system according to claim 1, it is characterised in that：The vertical deviation Micro actuator (11) includes the band screw rod (81) of two coaxial arrangements, and band screw rod (81) respective screw portion is inserted into band respectively In the screw hole retainer (82) of threaded hole.

8. auto parts and components mould measurement support system according to claim 1, it is characterised in that：The column (3) Upper side and the one end for the reinforcement girt strip (12) being obliquely installed are bolted, reinforce girt strip (12) the other end with it is upper solid The underrun for determining longeron (1) is bolted, and the reinforcement girt strip (12) is the rectangular square tube that both ends carry flanged plate.

9. auto parts and components mould measurement support system according to claim 1, it is characterised in that：The saturated vapor Buckling rigidity gas spring (9) includes upper cover plate (94), the lower surface installation baroceptor (91) of upper cover plate (94)；Upper cover plate (94) lower surface is contacted with the upper surface of closed rubber air chamber, and rubber air chamber includes the upper chamber of connection, lower chamber, lower gas Indoor injection liquid (92)；Lower chamber bottom is equipped with adding thermal resistance (93), liquid temperature sensor (95)；Adding thermal resistance (93) with it is outer Portion's power cord (96) is connected.