CN106226012A - A kind of device testing parallel institution tension and compression rigidity - Google Patents
A kind of device testing parallel institution tension and compression rigidity Download PDFInfo
- Publication number
- CN106226012A CN106226012A CN201610550203.7A CN201610550203A CN106226012A CN 106226012 A CN106226012 A CN 106226012A CN 201610550203 A CN201610550203 A CN 201610550203A CN 106226012 A CN106226012 A CN 106226012A
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- China
- Prior art keywords
- butterfly spring
- copper
- parallel institution
- load
- charger
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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
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
- G01M5/005—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress by means of external apparatus, e.g. test benches or portable test systems
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- Engineering & Computer Science (AREA)
- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of device testing parallel institution tension and compression rigidity, including charger framework, butterfly spring stand under load assembly, pull pressure sensor, power load bar and displacement sensor for pull rope.It is connected with the support being fixed on ground bottom displacement sensor for pull rope, the stay cord end of displacement sensor for pull rope is connected with the moving platform top link of parallel institution to be measured, power load bar one end is connected with parallel institution moving platform top link, the power load bar other end is connected with pull pressure sensor, butterfly spring stand under load assembly one end is connected with charger framework, the other end is connected with pull pressure sensor, and charger framework is fixed on the support being arranged at ground.The present invention solves and exports compound power/moment in prior art, it is impossible to applies certain separate load to linear independence, and cannot realize the problems such as the consecutive variations of loaded load, changed in stages.
Description
Technical field
The present invention relates to rigidity test field, be specifically related to a kind of device testing parallel institution tension and compression rigidity.
Background technology
Parallel institution has compared with serial mechanism that rigidity is big, Stability Analysis of Structures, bearing capacity are strong, precision is high, movement inertia
The features such as controlling little, real-time is strong.Parallel institution all has in various commercial production, practical activity and uses widely, such as aviation
The many aspects of space flight, precision manufactureing, automobile process and assemble, hygiene medical treatment etc..The performance of GPRS parallel institution, it is necessary to the most right
The mechanical characteristic of this mechanism is analysed in depth, and the rigidity of parallel institution is the important indicator of mechanism's mechanical characteristic.
Patent No. 200510050822.1 discloses a kind of device for calibrating parallel force transducer in six dimensions, Patent No.
200510050834.4 disclose a kind of stepless lifting type six dimension force sensor caliberating device, both uses gantry type frame,
The angle between rope and horizontal plane can be continuously available by pulley stepless lifting mechanism, and use larger reduction ratio speed reduction pair
Six-dimension force sensor imposed load.Both shortcomings are all: use easy side of existence when imposed load of rope and pulley type mechanism
To error, rope the most unidirectional output pulling force, not reversible output pressure；Power/moment that output is compound, it is impossible to realize a direction
Separate load loads.
Chinese patent CN101936797A discloses a kind of six-dimension force sensor calibration device and scaling method thereof, uses more
Six-dimension force sensor is loaded by the mode changing the loading of Different Weight counterweight, and counterweight loading cannot realize loaded load and become continuously
Changing, this device applies the power/moment being combined the most only.
Chinese patent CN103604561A discloses a kind of six-dimensional force/torque sensor caliberating device and scaling method thereof,
Using pulley, steel wire rope, counterweight to load, design rotary table is multi-direction with calibration sensor, and its shortcoming counterweight loads and cannot realize
Loaded load consecutive variations.
Above patent common drawback is for being required to design corresponding workbench, if for large-sized six-dimension force sensor mark
Rule is relatively costly.
Summary of the invention
It is an object of the invention to provide a kind of device testing parallel institution torsional rigidity, solve in prior art defeated
Go out compound power/moment, it is impossible to apply certain separate load to linear independence；Counterweight is used to load, it is impossible to realize loading
The problems such as the consecutive variations of load, changed in stages.
The technical solution realizing the object of the invention is: a kind of device testing parallel institution tension and compression rigidity, including adding
Carry and put framework, butterfly spring stand under load assembly, pull pressure sensor, power load bar and displacement sensor for pull rope；Wherein, stay cord position
Being connected with the support being fixed on ground bottom displacement sensor, the stay cord end of displacement sensor for pull rope is dynamic with parallel institution to be measured
The connector of table top is connected, and power load bar one end is connected with the connector at parallel institution moving platform top, and power load bar is another
One end is connected with pull pressure sensor, and butterfly spring stand under load assembly one end is connected with charger framework, the other end and pressure
Sensor is connected, and charger framework is fixed on the support being arranged at ground.Butterfly spring stand under load assembly, pressure sense
The stay cord coaxial line of device, power load bar and displacement sensor for pull rope.
Described charger framework is cube, and the parallel side of any two of which is without side plate, the described side without side plate
Welding triangular connecting plate on four angles in face, increase the integral rigidity of charger framework, charger framework surrounding is equipped with
Several mounting hole site.
Described butterfly spring stand under load assembly includes loading screw rod, copper nut porose disc, butterfly spring tightening cover, butterfly spring
Install housing, copper loads cylinder, pin, handwheel, copper sheathing flange, the first butterfly spring group, the second butterfly spring group and two and leads
To bar, the side plate outer wall of charger framework and pull pressure sensor homonymy is connected copper nut porose disc, and two guide posts are respectively
Through copper nut porose disc and charger framework, butterfly spring is installed shell one end and is fixed with butterfly spring tightening cover, butterfly
Spring tightening cover is fixed on the guide post outside charger framework, slides with guide post, depends in butterfly spring mounting shell body
Secondary arrange the first butterfly spring group, copper loads cylinder and the second butterfly spring group, and wherein the first butterfly spring group is against butterfly
Spring tightening cover, loads screw rod one end and sequentially passes through copper nut bore disk center through hole, charger framework, butterfly spring locking
Lid, the first butterfly spring group and copper load cylinder, and copper loads cylinder and props up the second butterfly spring group, load the screw rod other end
Through the sidewall of the charger framework parallel with being provided with copper nut porose disc, described end is provided with handwheel, and the other end and side
Junction inside wall is provided with copper sheathing flange；Copper loads cylinder and loading screw rod is connected by pin.
Described copper nut bore disk center through hole is screwed hole, and corresponding loading screw rod stage casing is provided with screw thread.
Compared with prior art, its remarkable advantage is the present invention:
(1) device simple and compact for structure, cost of manufacture is low.
(2) charger framework surrounding is provided with several mounting hole site, it is simple to regulate the setting height(from bottom) of whole device with
Loading direction, to adapt to needles of various sizes and shape parallel institution, highly versatile.
(3) butterfly spring group stand under load deformation, to provide screw thread feeding necessary displacement amount, owing to load is with screw thread amount of feeding line
Property change, therefore can pass through hand wheel rotating control load linear change.During hand wheel rotating, can in conjunction with pull pressure sensor
Load continuously with control load, hierarchical loading, to ensure the precision of imposed load.
(4) handwheel rotates forward and inverts the most exportable load, and both can export pulling force can also output pressure.By handwheel just
Turn reversion and can complete the process of loading and unloading easily, simple to operate, dependable performance.
(5) separate load along a direction linear independence can be exported.
Accompanying drawing explanation
Fig. 1 is the perspective view that the present invention measures the device of parallel institution tension and compression rigidity.
Fig. 2 is the front view that the present invention measures the device of parallel institution tension and compression rigidity.
Fig. 3 is the partial sectional view that the present invention measures the device of parallel institution tension and compression rigidity.
Detailed description of the invention
Below in conjunction with the accompanying drawings invention is described further.
In conjunction with Fig. 1 to Fig. 3, a kind of device testing parallel institution tension and compression rigidity, including charger framework 1, butterfly bullet
Spring stand under load assembly 2, pull pressure sensor 3, power load bar 4 and displacement sensor for pull rope 6.Wherein, bottom displacement sensor for pull rope 6
The support being fixed on ground by screw is connected, the stay cord end of displacement sensor for pull rope 6 and the moving platform of parallel institution 5 to be measured
The connector at top is connected, and the connector at power load bar 4 one end and parallel institution 5 moving platform top is connected, power load bar 4 another
End is connected with pull pressure sensor 3 by screw thread, and butterfly spring stand under load assembly 2 one end is connected with charger framework 1, the other end
Being connected with pull pressure sensor 3 by ring flange, charger framework 1 is fixed on the support being arranged at ground；Butterfly spring
The stay cord coaxial line of stand under load assembly 2, pull pressure sensor 3, power load bar 4 and displacement sensor for pull rope 6.
Described charger framework 1 totally six planes, the parallel face of two of which is without side plate, and remaining four face is welded as one
Individual cube, four angles in the described face without side plate are all welded triangular connecting plate, increase the overall firm of charger framework 1
Degree, charger framework 1 surrounding is equipped with several mounting hole site, it is simple to regulate setting height(from bottom) and the loading of whole measurement apparatus
Direction, to adapt to needles of various sizes and shape parallel institution.
Described butterfly spring stand under load assembly 2 includes loading screw rod 2-1, copper nut porose disc 2-3, butterfly spring tightening cover 2-
4, butterfly spring installs housing 2-5, copper loads cylinder 2-6, pin 2-7, handwheel 2-9, copper sheathing flange 2-10, the first butterfly spring
Group 2-8, the second butterfly spring group 2-11 and two guide post 2-2.Charger framework 1 and the side of pull pressure sensor 3 homonymy
It is provided with tapped through hole by bolt copper nut porose disc 2-3, the copper nut porose disc 2-3 center that is connected on plate outer wall, leads to screw thread
Symmetrical two pilot holes centered by hole, two guide post 2-2 are each passed through pilot hole and the loading of copper nut porose disc 2-3
The sidewall of device framework 1, butterfly spring is installed housing 2-5 one end and has been threaded connection butterfly spring tightening cover 2-4, and passes through
Holding screw is fixed spin-ended, and butterfly spring tightening cover 2-4 is threadedly secured to the guide post 2-2 outside charger framework 1
On, sliding with guide post 2-2, butterfly spring sets gradually the first butterfly spring group 2-8 in installing housing 2-5, copper loads circle
Post 2-6 and the second butterfly spring group 2-11, wherein the first butterfly spring group 2-8 is against butterfly spring tightening cover 2-4, loads screw rod
2-1 one end sequentially passes through copper nut porose disc 2-3 central through hole, charger framework 1, butterfly spring tightening cover 2-4, the first butterfly
Shape groups of springs 2-8 and copper load cylinder 2-6, and copper loads cylinder 2-6 and props up the second butterfly spring group 2-11, load screw rod 2-
1 other end is through the sidewall of the charger framework 1 parallel with being provided with copper nut porose disc 2-3, and described end is provided with handwheel 2-
9, and the junction of the other end and inside sidewalls is provided with copper sheathing flange 2-10；Copper loads cylinder 2-6 and loading screw rod 2-1 and passes through
Pin 2-7 is connected, and makes load load cylinder 2-6 by copper and acts on two butterfly spring groups.
Load screw rod 2-1 due to during stand under load butterfly spring group total deformation little, therefore loading screw rod 2-1 only need to be
One section of screw thread of processing near the screwed hole of centre of copper nut porose disc 2-3, remaining is polished rod.Load screw rod 2-1 at copper nut
Moving in the screwed hole of porose disc 2-3, screw thread feeding speed reducing ratio is big, makes handwheel 2-9 power reduce and export bigger load.
Guide post 2-2 limits the rotation around loading screw rod 2-1 axis of butterfly spring stand under load assembly 2 entirety, remains butterfly
Shape spring stand under load assembly 2 entirety can move along the axis loading screw rod 2-1, it is ensured that loaded load still can be along loading screw rod 2-1 axle
Transmit to direction.Two butterfly spring group stand under load deformation provide amount of spin needed for screw thread feeding necessary displacement amount and handwheel 2-9,
Handwheel 2-9 rotates forward and inverts the most exportable load, and copper loads cylinder 2-6 by compressing the first butterfly spring group 2-8 to apply pressure
Power, by compressing the second butterfly spring group 2-11 to apply pulling force.
The GLBLY spoke pressure that pull pressure sensor 3 selects Shanghai Gao Ling sensor-based system Engineering Co., Ltd to produce passes
Sensor, center is furnished with screwed hole, and surrounding is furnished with some connecting hole positions.Butterfly spring group stand under load deforms, and load is with screw thread feeding
Amount linear change, therefore load is with handwheel 2-9 amount of spin linear change.Rotate handwheel 2-9 with a direction to load, in conjunction with
Pull pressure sensor 3, can be with control load consecutive variations, changed in stages, and to ensure the precision of imposed load, handwheel 2-9 is with instead
Direction rotates and can complete unloading, obtains Tensile or Compressive Loading F simultaneously.
Power load bar 4 can select suitable length according to actually used situation, to strengthen versatility, and exports along its axis
To separate load.Displacement sensor for pull rope 6 can obtain the parallel institution 5 displacement variable x under load effect, then tension and compression
Rigidity is:
Being fixed with ground by the fixed platform of parallel institution 5, test device is configured according to required measurement direction, rotates hands
Wheel 2-9 loads, and changes step by step in conjunction with pull pressure sensor 3 controlled loading load, i.e. output loads divides from the zero to full scale
It is to load for 10～12 times.Complete load after handwheel 2-9 reversion with complete unloading, similarly control output loads from full scale to
Zero becomes 10～12 loadings.For ensureing certainty of measurement, repeatedly loading and unloading process.By stay cord displacement in loading procedure
Sensor 6 obtains the parallel institution 5 displacement variable under load effect in real time, in conjunction with data analysis parallel institution 5 direction
To tension and compression stiffness KF。
Claims (4)
1. the device testing parallel institution tension and compression rigidity, it is characterised in that: include charger framework (1), butterfly spring
Stand under load assembly (2), pull pressure sensor (3), power load bar (4) and displacement sensor for pull rope (6)；Wherein, stay cord displacement sensing
Device (6) bottom and the support being fixed on ground are connected, the stay cord end of displacement sensor for pull rope (6) and parallel institution (5) to be measured
The connector at moving platform top be connected, the connector at power load bar (4) one end and parallel institution (5) moving platform top is connected,
Power load bar (4) other end is connected with pull pressure sensor (3), butterfly spring stand under load assembly (2) one end and charger framework
(1) connecting, the other end is connected with pull pressure sensor (3), and charger framework (1) is fixed on the support being arranged at ground；
Butterfly spring stand under load assembly (2), pull pressure sensor (3), power load bar (4) and the stay cord of displacement sensor for pull rope (6)
Coaxial line.
The device of test parallel institution tension and compression rigidity the most according to claim 1, it is characterised in that: described charger frame
Body (1) is cube, and the parallel side of any two of which, without side plate, four angles of the described side without side plate is welded triangle
Connecting plate, increases the integral rigidity of charger framework (1), and charger framework (1) surrounding is equipped with several mounting hole site.
The device of test parallel institution tension and compression rigidity the most according to claim 2, it is characterised in that: described butterfly spring is subject to
Carry assembly (2) to include loading screw rod (2-1), copper nut porose disc (2-3), butterfly spring tightening cover (2-4), butterfly spring installation
Housing (2-5), copper load cylinder (2-6), pin (2-7), handwheel (2-9), copper sheathing flange (2-10), the first butterfly spring group
(2-8), the second butterfly spring group (2-11) and two guide posts (2-2), charger framework (1) and pull pressure sensor (3)
The side plate outer wall of homonymy is connected copper nut porose disc (2-3), and two guide posts (2-2) are each passed through copper nut porose disc (2-3)
With charger framework (1), butterfly spring is installed housing (2-5) one end and is fixed with butterfly spring tightening cover (2-4), butterfly spring
Tightening cover (2-4) is fixed on the guide post (2-2) in charger framework (1) outside, slides with guide post (2-2), butterfly bullet
Spring sets gradually the first butterfly spring group (2-8) in installing housing (2-5), copper loads cylinder (2-6) and the second butterfly spring
Group (2-11), wherein the first butterfly spring group (2-8) is against butterfly spring tightening cover (2-4), loads screw rod (2-1) one end successively
Through copper nut porose disc (2-3) central through hole, charger framework (1), butterfly spring tightening cover (2-4), the first butterfly bullet
Spring group (2-8) and copper load cylinder (2-6), and copper loads cylinder (2-6) and props up the second butterfly spring group (2-11), load spiral shell
Bar (2-1) other end is through the sidewall of the charger framework (1) parallel with being provided with copper nut porose disc (2-3), described end
It is provided with handwheel (2-9), and the junction of the other end and inside sidewalls is provided with copper sheathing flange (2-10)；Copper loads cylinder (2-6)
It is connected by pin (2-7) with loading screw rod (2-1).
The device of test parallel institution tension and compression rigidity the most according to claim 3, it is characterised in that: described copper nut bore
Dish (2-3) central through hole is screwed hole, and corresponding loading screw rod (2-1) stage casing is provided with screw thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610550203.7A CN106226012B (en) | 2016-07-12 | 2016-07-12 | A kind of device of test parallel institution tension and compression rigidity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610550203.7A CN106226012B (en) | 2016-07-12 | 2016-07-12 | A kind of device of test parallel institution tension and compression rigidity |
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| Publication Number | Publication Date |
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| CN106226012A true CN106226012A (en) | 2016-12-14 |
| CN106226012B CN106226012B (en) | 2018-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610550203.7A Active CN106226012B (en) | 2016-07-12 | 2016-07-12 | A kind of device of test parallel institution tension and compression rigidity |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100222A (en) * | 2018-07-24 | 2018-12-28 | 大连理工大学 | A kind of clip rigidity automatic calibration device and its application method |
| CN112683517A (en) * | 2021-01-13 | 2021-04-20 | 中南大学 | Testing system for static rigidity of photoelectron packaging flexible parallel platform |
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| SU1739238A1 (en) * | 1990-08-06 | 1992-06-07 | Университет дружбы народов им.Патриса Лумумбы | Arrangement for determining rigidity characteristics of flexible supports of dynamometers |
| CN1439869A (en) * | 2002-02-22 | 2003-09-03 | 李贵涛 | Virtual mechanical axis material test systems |
| CN1727861A (en) * | 2005-07-22 | 2006-02-01 | 浙江大学 | Device for calibrating parallel force transducer in six dimensions |
| CN101571441A (en) * | 2008-05-01 | 2009-11-04 | 中国科学院合肥物质科学研究院 | Six-dimension force sensor calibration device with medium measurement range |
| CN103616128A (en) * | 2013-12-09 | 2014-03-05 | 中国航天空气动力技术研究院 | Six-dimension force sensor calibration device and loading unit thereof |
| CN103926039A (en) * | 2014-04-30 | 2014-07-16 | 中国航天空气动力技术研究院 | Electromechanical type force source device allowing bi-directional loading |
-
2016
- 2016-07-12 CN CN201610550203.7A patent/CN106226012B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1739238A1 (en) * | 1990-08-06 | 1992-06-07 | Университет дружбы народов им.Патриса Лумумбы | Arrangement for determining rigidity characteristics of flexible supports of dynamometers |
| CN1439869A (en) * | 2002-02-22 | 2003-09-03 | 李贵涛 | Virtual mechanical axis material test systems |
| CN1727861A (en) * | 2005-07-22 | 2006-02-01 | 浙江大学 | Device for calibrating parallel force transducer in six dimensions |
| CN101571441A (en) * | 2008-05-01 | 2009-11-04 | 中国科学院合肥物质科学研究院 | Six-dimension force sensor calibration device with medium measurement range |
| CN103616128A (en) * | 2013-12-09 | 2014-03-05 | 中国航天空气动力技术研究院 | Six-dimension force sensor calibration device and loading unit thereof |
| CN103926039A (en) * | 2014-04-30 | 2014-07-16 | 中国航天空气动力技术研究院 | Electromechanical type force source device allowing bi-directional loading |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109100222A (en) * | 2018-07-24 | 2018-12-28 | 大连理工大学 | A kind of clip rigidity automatic calibration device and its application method |
| CN109100222B (en) * | 2018-07-24 | 2020-05-19 | 大连理工大学 | Automatic calibration device for clamp rigidity and use method thereof |
| CN112683517A (en) * | 2021-01-13 | 2021-04-20 | 中南大学 | Testing system for static rigidity of photoelectron packaging flexible parallel platform |
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| Publication number | Publication date |
|---|---|
| CN106226012B (en) | 2018-10-02 |
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