CN108760297A - A kind of Proportional valve load equipment - Google Patents
A kind of Proportional valve load equipment Download PDFInfo
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- CN108760297A CN108760297A CN201810962993.9A CN201810962993A CN108760297A CN 108760297 A CN108760297 A CN 108760297A CN 201810962993 A CN201810962993 A CN 201810962993A CN 108760297 A CN108760297 A CN 108760297A
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- 210000000078 claw Anatomy 0.000 claims abstract description 110
- 238000000034 method Methods 0.000 claims abstract description 11
- 230000002146 bilateral effect Effects 0.000 claims description 12
- 238000002474 experimental method Methods 0.000 claims description 10
- 230000008878 coupling Effects 0.000 claims description 8
- 238000010168 coupling process Methods 0.000 claims description 8
- 238000005859 coupling reaction Methods 0.000 claims description 8
- 238000010276 construction Methods 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 4
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 12
- 230000033001 locomotion Effects 0.000 abstract description 10
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000005484 gravity Effects 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 238000013461 design Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000000979 retarding effect Effects 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/02—Gearings; Transmission mechanisms
- G01M13/027—Test-benches with force-applying means, e.g. loading of drive shafts along several directions
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Abstract
The present invention relates to a kind of Proportional valve load equipments that the achievable ratio in various load tests applies load.Present invention application arithmetic progression principle, consider in invention and interferes and collide in component movement, determine suitable counterweight size and the in groups structure and arrangement mode of claw, manufacture linear uniform motion, claw is caused to be detached successively with counterweight, the counterweight for realizing the stroke motion load under uniform rotating speed with certain space rate piles up i.e. equal proportion load successively；Vertical truss structure simultaneously, reduces weight and volume, and the stability of device during support liter counterweight is ensure that by bottom weight；Abandoning tradition lifting device uses hydraulic drive or chain drive, and the stability and reliability of device can be greatly improved using lead screw transmission cooperation stepper motor.Present invention can apply in various loading experimental apparatus, realization proportionally applies load, and realizes the automation of loading procedure, high efficiency, to mitigate artificial intensity.
Description
Technical field
The present invention relates to record experimental provision technical field, and in particular to the achievable ratio in various load tests is applied
Load a kind of Proportional valve load equipment of lotus.
Background technology
The typical case that ratio applies load is the torsion stiffness test of robot accurate retarding machine, and torsion stiffness is this
One important performance indicator of class speed reducer, by using dedicated testing stand to robot with accurate retarding machine model machine one
Determine the backlash generated under load specific angle position, return difference measures, and draws retardant curve, to obtain pair of torque and corner
It should be related to, the rigidity of speed reducer is determined with this.Occur several surveying the type speed reducer torsion stiffness now
The testing stand and instrument of examination, measuring principle is essentially identical, is required for the load of adding proportion to realize the acquisition of test data
With the drafting of relation curve.
All it is at present that there is targetedly patented product since the testing stand and instrument that measure torsion stiffness are most of,
The theory of ergonomics can not be taken into account while guarantee test precision, and cannot accomplish to reduce the regular muscle power repeated
Labour, during measurement data, experimenter generally requires according to requirement of experiment manual loading counterweight and dismounting counterweight, this
Delay experiment process significantly, affects the whole efficiency of experiment；Either take during the experiment machine driven system or
Electrical system carries out load, and due to the loading characteristic of system, there is non-linear phenomena or the nonlinear problem of control.
Invention content
In view of the above problems, inventor's integrated survey and a kind of Proportional valve load equipment of mechanical load counterweight is devised, it can
For measuring speed reducer torsion stiffness, as shown in fig. 6, realize equal proportion load in lever-loading, by ergonomics and
Reliability design and system design, the present invention possesses compatibility test platform and instrument coordinate the ability of experiment, improves examination
Efficiency is tested, and since its stability is good, improves test accuracy, greatly saves manpower, is suitable for the requirement of proportional loading.
The technological means that the present invention uses is as follows：
A kind of Proportional valve load equipment, including counterweight chassis 1, counterweight 2, in groups claw 3, load input terminal 4, shaft coupling 5, step
Stepper motor 6, motor rack 7, guide rail framework 8, ball-screw 9, ball-screw support base 10 and link block 11, wherein：
Four fulcrums are arranged in 1 bottom of counterweight chassis, and are still located on the four of counterweight chassis 1 with the torque center of toppling of generation
Counterweight is carried out for foundation in a branch point range, Proportional valve load equipment is made not tilt integrally；
Further, the pairs of wheel 12 of adaptation is installed, pairs of wheel 12 is mounted on counterweight on the counterweight chassis 1
At two, the rear fulcrum of 1 bottom of chassis, cooperation counterweight chassis 1 bottom front, two fulcrums make to keep when configuration pedestal 1 is static
Horizontal equilibrium, when needing moving ratio loading device, by device inclination make 1 bottom front fulcrum of counterweight chassis tilt, by
12 realization device of wheel is moved, 1 bottom front fulcrum of the job site chassis Shi Jiangchong is reached and contacts ground, realization device position
It is fixed；
Guide rail framework 8 is the whole frame of Proportional valve load equipment, and perpendicular to counterweight chassis 1, guide rail framework 8 is welded on counterweight
On chassis 1, guide rail framework 8 includes two guide rails and truss structure pusher side frame, and two guide rails position claw 3 in groups, at
It organizes 3 tail end of claw and guide rail contact and can be slided along guide rail, both sides truss structure pusher side frame is used for ensureing that device adds in counterweight 2
Stability during load；
Motor rack 7 is welded on 8 center of top of guide rail framework, ensures the depth of parallelism and position degree of the guide rail of guide rail framework 8, i.e.,
Guide rail is parallel with the output end motor shaft of stepper motor 6, and does not influence subject to normally lifting；
Stepper motor 6 is mounted on motor rack 7, and 6 output end motor shaft of stepper motor vertically downward, and is kept and guide rail machine
The guide rail of frame 8 is parallel；
Further, the stepper motor 6 is mounted in such a way that bolt fastens on motor rack 7.
The upper end of ball-screw 9 is connected to by shaft coupling 5 on the output end motor shaft of stepper motor 6, under ball-screw 9
End is mounted on ball-screw support base 10, and ball-screw support base 10 is mounted on by link block 11 on counterweight chassis 1, is passed through
Link block 11 adjusts 10 position of ball-screw support base, and ball-screw 9 is made to be placed in plumbness and be put down with the guide rail of guide rail framework 8
Row；
Claw 3 in groups include the claw of several bilateral U-shaped structures, while claw front side U-shaped structure supports counterweight 2,
Counterweight 2 is not interfered when being installed on the load input terminal 4 in claw U-type groove, and U-shaped structure U-shaped opening tail portion is inserted on rear side of claw
On the guide rail for entering guide rail framework 8, and it can be slided along guide rail；Claw 3 is fixedly mounted on ball wire perpendicular to ball-screw 9 in groups
On ball nut in thick stick 9, between claw parallel and adjacent to the distance between two claws passed from top to bottom in arithmetic progression
Subtract, the distance between described two adjacent claws are the lower surface of top claw to the distance of lower section claw upper surface, and institute
There are the total kilometres and counterweight 2 of shortest ball-screw 9 when having to be larger than maximum load among the distance between two neighboring claw
Support side 2-2 thickness sum of the two, to avoid generate counterweight proportional loading during generate collision and interference, the maximum
Total movement of ball-screw 9 when the total kilometres of ball-screw 9 have loaded for whole counterweights 2 that claw 3 in groups loads when load
Distance；Claw 3 is fixed by ball-screw 9 in groups and the guide rail of guide rail framework 8 positions, and realizes the equal proportion load of counterweight 2, together
When prevent Proportional valve load equipment radially crooked；
Further, the ratio that the quantity of the claw of the bilateral U-shaped structure of the claw in groups 3 is added as needed on adds
It carries, that is, loads number and require to be correspondingly arranged.
Counterweight 2, including cylinder body 2-1 and diameter are more than the support side 2-2, cylinder body 2-1 and Tuo Bian 2-2 of ontology
It is integrally formed and axle center is overlapped, on front side of the claw for the bilateral U-shaped structure that support side 2-2 can be placed in claw 3 in groups in U-shaped portion point,
Cylinder body 2-1 is placed on front side of the claw of bilateral U-shaped structure in U-type groove, to enable counterweight 2 to be held up by claw 3 in groups
Load；2 shaft core position of counterweight is provided through hole 2-3, and counterweight 2 is loaded into torsion stiffness experimental provision by through hole 2-3
It loads on input terminal 4.
Further, the total kilometres when integral thickness d of the counterweight 2 is more than 9 maximum load of ball-screw and counterweight 2
Support side 22 thickness and in groups in claw 3 single claw the sum of thickness three, to prevent claw in locking apparatus operational process
It collides with the support side 2-2 of counterweight 2.The restriction with the distance between two adjacent claws is limited herein mutually to restrict, and is protected
Card does not conflict mutually.
Further, the load input terminal 4 can not be the included input terminal of torsion stiffness experimental provision, removable
The absolute construction mounted on torsion stiffness experimental provision unloaded, 4 top of load input terminal are set as hook-shaped or bolt thread shape,
Load input terminal 4 is set to be removably attachable to the input end of experimental provision.
The operation principle of the present invention：
By the way that the ball nut bolt connecting mode in claw 3 and ball-screw 9 in groups is fixed together, it is assembled into liter
It comes down to a lower group part, the upper end of ball-screw 9 is connected to the output end of stepper motor 6 by shaft coupling 5, and 9 lower end of ball-screw is mounted on
On ball-screw support base 10, using lead screw transmission principle, realizes and rotary motion is converted into vertical rectilinear path fortune
It is dynamic.
Claw 3 carries out vertical out-fall installation with the spacing of arithmetic progression formula on ball-screw 9 in groups, in groups in claw 3
The distance of more top claw next claw adjacent thereto is bigger, according to the adjacent claw of arithmetic progression principle each two away from
Uniformly increase from the numerical value of determining tolerance, it is shortest among the distance between all two neighboring claws to have to be larger than maximum
The thickness sum of the two of the total kilometres of ball-screw 9 and the support side 2-2 of counterweight 2, is produced to avoid between claw and counterweight 2 when load
Raw collision and interference.Load input terminal 4 of the proportional loading to torsion stiffness experimental provision after counterweight 2 is held up by claw 3 in groups
On, torsion stiffness experimental provision can be made to realize uniform load torque, principle is as shown in annex Fig. 6, it is illustrated that device right end is
Input terminal is loaded, torsion stiffness experimental provision applies torque M by the retarder that the gravity that right end applies is middle section, i.e.,：
M=L*G
In formula：M is torque, that is, torsional load, unit Nm；L is that load input terminal horizon bar is the distance that torque provides, single
Position m；G is gravity, and G=m*g, m are counterbalance mass, and units/kg, g is acceleration of gravity.
Present invention application arithmetic progression principle realizes the stroke motion load under uniform rotating speed with certain space rate
Counterweight 2 piles up i.e. equal proportion load successively.
Ratio of the present invention is applied loading device and be can be applied in the torque load test of all kinds of speed reducers, and load feature is such as
Under：
(1) require the lasting accuracy of test system high；
(2) load applies according to design proportion, and accuracy is high；
(3) loading procedure automates, is efficient；
Due to its above feature, which can be applied in various loading experimental apparatus, and realization proportionally applies
Load, and realize the automation of loading procedure, high efficiency, to mitigate artificial intensity.
Compared with the prior art, it is an advantage of the invention that it will be apparent that being mainly manifested in：
1, proportional loading
By arithmetic progression principle, considers in invention and interfere and collide in component movement, determine suitable weight
Yardstick cun and the in groups structure and arrangement mode of claw manufacture linear uniform motion, claw are caused to be detached successively with counterweight, to
It realizes proportional loading, meets the requirement of design original intention and experiment；
2, light weight vertical structure
Consider insufficient existing for existing loading equipemtn and inconvenience in load measurement experiment, it, will be whole in conjunction with actual conditions
Body device is designed as vertical truss structure, on the one hand reduces weight and volume, is on the other hand matched by carrying out bottom to device
Weight ensure that the stability of device during support rises counterweight, ensure that the accuracy of experiment, reduce human interference；
3, screw mechanism is driven
Conventional lifting arrangements use hydraulic drive or chain drive, hydraulic transmission to have certain pollution, chain
Item transmission has certain dangerous such as chain releasing or fracture as exposed drive.And lead screw transmission cooperation stepper motor can
The stability and reliability of device are greatly improved, and domestic leading screw industry has tended to specification, belongs to the transmission class being easily achieved
Type；
4, practical and convenient, versatile
The dedicated counterweight loading device in laboratory is seldom, does not have economy and reality if using fork truck or crane
With property, the present invention uses concise driven Design and the move mode of hommization to increase reality for the placement of device and use
With property and convenience.The present invention can also be applied in daily life, the movement to small-sized laboratory apparatus or placement tool
There is certain help, it is big to laboratory work if more purposes can be obtained indoors by improving simultaneously reasonable employment
It is helpful；
In summary advantage, the present invention have good market prospects, can generate positive social benefit and significant
Economic benefit.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to do simply to introduce, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments for those of ordinary skill in the art without having to pay creative labor, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is a kind of axonometric schematic diagram of Proportional valve load equipment in the embodiment of the present invention 1；
Fig. 2 is the front view of Fig. 1；
Fig. 3 is the side view of Fig. 1；
Fig. 4 be in Fig. 1 in groups in claw single claw structural schematic diagram；
Fig. 5 is the structural schematic diagram of counterweight in Fig. 1；
Fig. 6 is the principle schematic of torque measurement；
Fig. 7 is the specific size figure of embodiment 1.
In figure：1, counterweight chassis, 2, counterweight, 2-1 cylinder bodies, 2-2, support side, 2-3, through hole, 3, claw in groups,
4, input terminal is loaded, 5, shaft coupling, 6, stepper motor, 7, motor rack, 8, guide rail framework, 9, ball nut and mating ball wire
Thick stick, 10, ball-screw support base, 11, link block, 12, wheel, 13, scale support.
Specific implementation mode
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is only
It is only a part of the embodiment of the present invention, instead of all the embodiments.Below to the description of at least one exemplary embodiment reality
It is merely illustrative on border, never as to the present invention and its application or any restrictions used.Based on the reality in the present invention
Example is applied, every other embodiment obtained by those of ordinary skill in the art without making creative efforts all belongs to
In the scope of protection of the invention.
It should be noted that term used herein above is merely to describe specific implementation mode, and be not intended to restricted root
According to exemplary embodiments of the present invention.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
It is not limited the scope of the invention up to formula and numerical value.Simultaneously, it should be clear that for ease of description, attached each portion shown in the drawings
The size divided not is to be drawn according to actual proportionate relationship.For the known technology of person of ordinary skill in the relevant, side
Method and equipment may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as authorizing explanation
A part for book.In shown here and discussion all examples, appointing to occurrence should be construed as merely illustrative, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should be noted that：Similar label
Similar terms are indicated in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attached
It need not be further discussed in figure.
In the description of the present invention, it is to be understood that, the noun of locality such as " front, rear, top, and bottom, left and right ", " it is laterally, vertical,
Vertically, the orientation or positional relationship indicated by level " and " top, bottom " etc. is normally based on orientation or position shown in the drawings and closes
System, is merely for convenience of description of the present invention and simplification of the description, in the absence of explanation to the contrary, these nouns of locality do not indicate that
Signified device or element must have a particular orientation or with specific azimuth configuration and operations with hint, therefore cannot manage
Solution is limiting the scope of the invention：The noun of locality " inside and outside " refers to inside and outside the profile relative to each component itself.
For ease of description, herein can with use space relative terms, as " ... on ", " in ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, if the device in attached drawing is squeezed, it is described as " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under its device or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also other different modes positioning (be rotated by 90 ° or be in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
Furthermore, it is necessary to which explanation, limits parts, it is only for be convenient for using the words such as " first ", " second "
Corresponding parts are distinguished, do not have Stated otherwise such as, there is no particular meanings for above-mentioned word, therefore should not be understood as to this
The limitation of invention protection domain.
Embodiment 1
As shown in Figure 1 to Figure 3, a kind of Proportional valve load equipment, including counterweight chassis 1, counterweight 2, in groups claw 3, load it is defeated
Enter end 4, shaft coupling 5, stepper motor 6, motor rack 7, guide rail framework 8, ball-screw 9, ball-screw support base 10 and link block
11, wherein：
Four fulcrums are arranged in 1 bottom of counterweight chassis, and are still located on the four of counterweight chassis 1 with the torque center of toppling of generation
Counterweight is carried out for foundation in a branch point range, Proportional valve load equipment is made not tilt integrally；
The pairs of wheel 12 of adaptation is assembled at two, the rear fulcrum of 1 bottom of counterweight chassis, 1 bottom of cooperation counterweight chassis
Two, front fulcrum makes to keep horizontal equilibrium when configuration pedestal 1 is static, and when needing moving ratio loading device, device inclination is made
1 bottom front fulcrum of counterweight chassis tilts, and is moved by 12 realization device of pairs of wheel, reaches the job site chassis Shi Jiangchong 1
Bottom front fulcrum contacts ground, and realization device position is fixed；
Guide rail framework 8 is the whole frame of device, and perpendicular to counterweight chassis 1, guide rail framework 8 is welded on counterweight chassis 1,
Guide rail framework 8 includes two guide rails and truss structure pusher side frame, and two guide rails position claw 3 in groups, in groups 3 tail of claw
End with guide rail contact and can slide along guide rail, both sides truss structure pusher side frame is for ensureing device in 2 loading procedure of counterweight
Stability；
Motor rack 7 is welded on 8 center of top of guide rail framework, ensures the depth of parallelism and position degree of the guide rail of guide rail framework 8, i.e.,
Guide rail is parallel with the output end motor shaft of stepper motor 6, and does not influence subject to normally lifting；
Stepper motor 6 is installed in such a way that bolt fastens on motor rack 7, the vertical court of 6 output end motor shaft of stepper motor
Under, and keep parallel with the guide rail of guide rail framework 8；
The upper end of ball-screw 9 is connected to by shaft coupling 5 on the output end motor shaft of stepper motor 6, under ball-screw 9
End is mounted on ball-screw support base 10, and ball-screw support base 10 is mounted on by link block 11 on counterweight chassis 1, is passed through
Link block 11 adjusts 10 position of ball-screw support base, and ball-screw 9 is made to be placed in plumbness and be put down with the guide rail of guide rail framework 8
Row；
Claw 3 in groups include the claw of several bilateral U-shaped structures, in groups the number of the claw of the bilateral U-shaped structure of claw 3
The proportional loading being added as needed on is measured, that is, loads number and requires to be correspondingly arranged；Such as need to load 3% successively, 20%, 40%,
60%, 80%, 100% proportional load, that is, when loading 6 times, using 6 claws in groups；Such as need to load 20% successively, 40%,
60%, 80%, 100% i.e. load 5 times when, then 5 claws in groups are used, in the present embodiment by taking 5 in groups claw as an example；
As shown in figure 4, the claw of double-U-shaped structure is installed in counterweight 2 and wears while front side U-shaped structure supports counterweight 2
Do not interfere when the load input terminal 4 crossed in claw U-type groove, guide rail framework 8 is inserted into U-shaped structure U-shaped opening tail portion on rear side of claw
On guide rail, and it can be slided along guide rail；Claw 3 is fixedly mounted on the ball spiral shell in ball-screw 9 perpendicular to ball-screw 9 in groups
On mother, parallel between claw and distance is incremented by arithmetic progression under upper, and most short between two neighboring claw top and bottom
Total movement of ball-screw 9 when the total kilometres of ball-screw 9 have all loaded 5 counterweights when distance has to be larger than maximum load
The thickness c sum of the two of distance and the support side 2-2 of counterweight 2, to avoid collision and interference is generated.
As shown in fig. 7, the distance between 5 claws have the distance of top and bottom 4, single jaw thicknesses a=in the present embodiment
(lower surface of claw is to adjacent lower section claw above i.e. for upper and lower surface distance between two neighboring claw from top to bottom by 10mm.
Upper surface distance) be respectively b1, b2, b3, b4：
B1=85mm
B2=80mm
B3=75mm
B4=70mm
As shown in figure 5, counterweight 2 includes the support side 2-2, cylinder body 2-1 that cylinder body 2-1 and diameter are more than ontology
It is integrally formed with support side 2-2 and axle center is overlapped, U on front side of the claw for the bilateral U-shaped structure that support side 2-2 can be placed in claw 3 in groups
On type part, cylinder body 2-1 is placed on front side of the claw of bilateral U-shaped structure in U-type groove and is not contacted with claw, to make weight
Code 2 can be held up by claw 3 in groups and load；2 shaft core position of counterweight is provided through hole 2-3, and counterweight 2 is added by through hole 2-3
It is downloaded on the load input terminal 4 of torsion stiffness experimental provision, wherein：
The thickness c=15mm of the support side 2-2 of counterweight 2,
The total thickness d=75mm of counterweight 2.
As shown in fig. 7, when 5 claws are driven by ball-screw 9, when vertically declining according to the stroke of regulation, 5 counterweights
2 since it asks the lower edge of side 2-2 different at a distance from the upper surface of U-shaped structure on front side of the claw of corresponding load, in ball
Gradually counterweight 2 is loaded into the scale support 13 of torsion stiffness experimental provision input terminal 4 under 9 each stroke of leading screw, device input terminal 4
Scale support 13 fix with respect to ground.
When whole counterweights 2 are not loaded with, nethermost counterweight 2 is detached from load 4 scale support 13 of input terminal, and counterweight 2 is by claw
Hold side 2-2 remains stationaries in top face.When loading a counterweight 2, bottom counterweight 2 is detached from claw, and it is defeated to be placed on load
Enter setting off on 13 for end 4, at this time：
B4=70mm b4-5>D-c=60mm (5mm is a descending stroke)
Second counterweight of number still holds side by claw from the bottom up；When two counterweights in load bottom, count from the bottom up
Second counterweight is detached from claw, is placed on first counterweight of number from the bottom up, at this time
B3=75mm b3-5*2>D-c=60mm (5mm*2 is descending stroke twice)
Therefore third counterweight is still held, and realizes two-stage proportion loading in the absence of interference.And so on, it can be with
Realize the load in order of 5 counterweights.
After 5 counterweights whole declines are loaded into the scale support 13 of device input terminal 4：
5mm*5+c<70mm (5mm*5 is five descending strokes)
5mm*5 is to decline whole strokes in above equation, and c=15mm is the thickness of the support side 2-2 of counterweight 2, is all loaded
The thickness sum of the two of the support side 2-2 of stroke later and counterweight 2 is less than b4=70mm, and (lower surface of claw is to adjacent above i.e.
Lower section claw upper surface distance), and the support side 2-2 of the two groups of claws up and down and counterweight 2 included by b4 is not interfered,
That is b4 meets whole distances of descending stroke, therefore all claws in groups 3 and counterweight 2 will not interfere, and meets and decline row
Journey.Claw 3 is fixed by ball-screw 9 in groups and the guide rail of guide rail framework 8 positions, and realizes the equal proportion load of counterweight 2, simultaneously
Prevent Proportional valve load equipment radially crooked.
The thickness c on the support side 22 of total kilometres and counterweight 2 when the integral thickness d of counterweight 2 is more than 9 maximum load of ball-screw
And in groups in claw 3 single claw the sum of thickness a three, i.e.,：
5mm*5+c+a<d
Support side 2-2 to prevent claw in locking apparatus operational process and counterweight 2 collides, and limits herein and adjacent two
The restriction of the distance between claw mutually restricts, and guarantee does not conflict mutually.
When being worked using aforementioned proportion loading device, as shown in fig. 6, in the present embodiment, torsion stiffness experimental provision adds
It is L that load input terminal horizon bar, which is the distance that torque provides, and experiment institute is generated by the gravity of the offer counterweight of present apparatus equal proportion
The torque M needed loads 20% (160Nm), 40% (320Nm), 60% (480Nm), 80% (640Nm), 100% successively
(800Nm) is loaded 5 times, therefore claw 3 uses 5 claws in groups, and each counterweight weight 16kg can carry the gravity G of 160N, and add
It is 1m to carry the distance L that input terminal provides, it is possible to torque formula：
M=L*G
In formula：M is torque, that is, torsional load, unit Nm；L is that load input terminal horizon bar is the distance that torque provides, single
Position m；G is gravity, and G=m*g, m are counterbalance mass, and units/kg, g is acceleration of gravity.L is definite value at this time, and M follows the increase of G
And increase.
The load input terminal 4 can not be the included input terminal of torsion stiffness experimental provision, dismountable to install
In the absolute construction of torsion stiffness experimental provision, 4 top of load input terminal is set as hook-shaped or bolt thread shape, keeps load defeated
The input end of experimental provision can be removably attachable to by entering end 4.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (6)
1. a kind of Proportional valve load equipment, which is characterized in that including counterweight chassis, counterweight, in groups claw, load input terminal, shaft coupling
Device, stepper motor, motor rack, guide rail framework, ball-screw, ball-screw support base and link block, wherein：
Four fulcrums are arranged in counterweight tray bottom, and four fulcrums on counterweight chassis are still located on the torque center of toppling of generation
Counterweight is carried out for foundation in range, Proportional valve load equipment is made not tilt integrally；
Guide rail framework is the whole frame of Proportional valve load equipment, and perpendicular to counterweight chassis, guide rail framework is welded on counterweight chassis,
Guide rail framework includes two guide rails and truss structure pusher side frame, and two guide rails position claw in groups, in groups claw tail end
With guide rail contact and can be slided along guide rail, both sides truss structure pusher side frame is used for ensureing that device is steady in counterweight loading procedure
It is qualitative；
Motor rack is welded on guide rail framework center of top, ensures the depth of parallelism and position degree of the guide rail of guide rail framework, i.e., guide rail with
The output end motor shaft of stepper motor is parallel, and does not influence subject to normally lifting；
Stepper motor is mounted on motor rack, and stepper motor output end motor shaft vertically downward, and keeps leading with guide rail framework
Rail is parallel；
The upper end of ball-screw is connected to by shaft coupling on the output end motor shaft of stepper motor, and ball-screw lower end is mounted on
On ball-screw support base, ball-screw support base is mounted on by link block on counterweight chassis, and ball is adjusted by link block
Leading screw support base position makes ball-screw be placed in plumbness and parallel with the guide rail of guide rail framework；
Claw in groups includes the claw of several bilateral U-shaped structures and pacifies in counterweight while claw front side U-shaped structure supports counterweight
Do not interfere when loaded on load input terminal in claw U-type groove, guide rail machine is inserted into U-shaped structure U-shaped opening tail portion on rear side of claw
On the guide rail of frame, and it can be slided along guide rail；Claw is fixedly mounted on the ball in ball-screw perpendicular to ball-screw in groups
On nut, between claw parallel and adjacent to the distance between two claws successively decrease from top to bottom in arithmetic progression, it is described adjacent
The distance between two claws for top claw lower surface to the distance of lower section claw upper surface, and all two neighboring cards
The thickness two on the support side of the total kilometres of shortest ball-screw when having to be larger than maximum load and counterweight among the distance between pawl
The sum of person generates collision and interference during counterweight proportional loading, the ball-screw when maximum load to avoid generating
Total kilometres are total displacement distance of ball-screw when whole counterweights of claw load in groups have loaded；Claw passes through ball in groups
Leading screw is fixed and the guide rail of guide rail framework positions, and realizes the equal proportion load of counterweight, while preventing Proportional valve load equipment radially askew
Tiltedly；
Counterweight, including cylinder body and diameter are more than the support side of ontology, and cylinder body and Tuo Bian are integrally formed and axle center weight
Folded, on front side of the claw for the bilateral U-shaped structure that support side can be placed in claw in groups in U-shaped portion point, it is U-shaped that cylinder body is placed in bilateral
On front side of the claw of structure in U-type groove, loaded to enable counterweight to be held up by claw in groups；Counterweight shaft core position is provided through
Hole, counterweight are loaded by through hole on the load input terminal of torsion stiffness experimental provision.
2. a kind of Proportional valve load equipment according to claim 1, which is characterized in that the bilateral of the claw in groups is U-shaped
The proportional loading that the quantity of the claw of structure is added as needed on loads number and requires to be correspondingly arranged.
3. a kind of Proportional valve load equipment according to claim, which is characterized in that the integral thickness of the counterweight is more than
The thickness on the support side of total kilometres and counterweight when ball-screw maximum load and in groups in claw single claw thickness three
The sum of, the support side to prevent claw in locking apparatus operational process and counterweight collides.
4. a kind of Proportional valve load equipment according to claim 1, which is characterized in that be equipped on the counterweight chassis suitable
The pairs of wheel of the pairs of wheel matched, adaptation is mounted at two, the rear fulcrum of counterweight tray bottom, coordinates counterweight chassis bottom
Two fulcrums make to keep horizontal equilibrium when configuration pedestal is static in front of portion, and when needing moving ratio loading device, device is tilted
So that fulcrum in front of counterweight tray bottom is tilted, moved by pairs of wheel realization device, reaches the job site chassis Shi Jiangchong bottom
Fulcrum contacts ground in front of portion, and realization device position is fixed.
5. a kind of Proportional valve load equipment according to claim, which is characterized in that the load input terminal is not torsion
The included input terminal of Rigidity Experiment device is detachably arranged in the absolute construction of torsion stiffness experimental provision, load input
End top is set as hook-shaped or bolt thread shape, and load input terminal is enable to be removably attachable to the input terminal of experimental provision
Portion.
6. a kind of Proportional valve load equipment according to claim 1, which is characterized in that the stepper motor is fastened with bolt
Mode be mounted on motor rack on.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810962993.9A CN108760297B (en) | 2018-08-22 | 2018-08-22 | Proportional loading device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810962993.9A CN108760297B (en) | 2018-08-22 | 2018-08-22 | Proportional loading device |
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| CN108760297B CN108760297B (en) | 2024-05-14 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111122207A (en) * | 2020-01-15 | 2020-05-08 | 莱茵技术（上海）有限公司 | Irregular surface area seat equipment testing arrangement |
| CN112432846A (en) * | 2020-12-11 | 2021-03-02 | 青岛理工大学 | Automatic counting type gravity tension-compression loading device |
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| CN108760297B (en) | 2024-05-14 |
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