CN105258615A - Curvature measuring device of pipe-shaped object - Google Patents
Curvature measuring device of pipe-shaped object Download PDFInfo
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- CN105258615A CN105258615A CN201510736704.XA CN201510736704A CN105258615A CN 105258615 A CN105258615 A CN 105258615A CN 201510736704 A CN201510736704 A CN 201510736704A CN 105258615 A CN105258615 A CN 105258615A
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Abstract
The invention provides a curvature measuring device of a pipe-shaped object. The measuring device comprises mutually-perpendicular horizontal and vertical work benches. A smooth groove is arranged in the inner side of the horizontal work bench. Picking seats are arranged on two ends of the smooth groove and can move in the horizontal direction of the smooth groove. Two ends of the pipe-shaped object are respectively arranged on the picking seats on the two ends. A pair of fixed devices are arranged in the middle of the inner side of the horizontal work bench. A coil is wound on a coil column. Two ends of the coil are wound around the fixed devices and then connected with the picking seats. The coil column is connected with a driving mechanism. Horizontal and vertical scales are arranged on the inner side of the horizontal work bench. A light source and a projection photographic device face the height of the pipe-shaped object. After the driving mechanism is started, the pipe-shaped object performs uniform-speed bending motion in the smooth groove in the traction direction of the coil. The projection photographic device records the projection at the maximum bending degree. According to the invention, index of the bending performance of the pipe-shaped object can be directly obtained; and the curvature measuring device is simple in structure, convenient to operate, low in cost and high in efficiency.
Description
Technical field
The present invention relates to a kind of measurement mechanism, particularly relate to a kind of tube flexibility measurement mechanism.
Background technology
Point out according to People's Republic of China (PRC) pharmaceuticals industry standard YY0500-2004/ISO7198:1998, for (corrugated) blood vessel having wrinkle, blood vessel can be elongated the wrinkle smoothed, be mainly used in the kink reducing blood vessel, thus contribute to improving the compliance of tube and reducing the formation of implantable intravascular thrombus.
Present stage, mainly with crooked process radius/radius come for characterize when artificial blood vessel occur bending time its inside formed by bending radius.Have two kinds of method of testings: 1) by sample lopping, cast is reduced at tractive sample two ends in the opposite direction, until bending occurs; The cylinder model of a known diameter is adopted to insert in people's circle to measure bending diameter; 2) sample be placed in do not cause it to bend model on, replace the radius of less model gradually, when sample slightly bends generation, model radius now represents the crooked process radius of artificial blood vessel.Said method complicated operation, affects conventional efficient.
Summary of the invention
The technical problem to be solved in the present invention is to provide the measurement mechanism of the direct measurement tube flexibility that a kind of structure is simple, easy to operate, efficiency is high.
In order to solve the problems of the technologies described above, technical scheme of the present invention is to provide a kind of tube flexibility measurement mechanism, it is characterized in that: comprise the horizontal table of orthogonal connection and vertical worktable, smooth groove is located at the inner side of horizontal table, stingy seat is located at two ends on smooth groove and can be slided along smooth groove horizontal direction, and tube sample two ends are located on the stingy seat at two ends respectively; A pair stationary installation is located in the middle of the inner side of horizontal table, and coil winding is on loop pillar, and coil two ends are walked around two stationary installations respectively and are connected with the stingy seat at two ends, and loop pillar connects driving mechanism;
The inner side of horizontal table is provided with horizontal ruler, and vertical scale to be located in the middle part of vertical worktable and vertically with horizontal ruler to be placed;
Light source and projection camera installation are all just arranged tube specimen height.
Preferably, described horizontal ruler is the scale of symmetrical scale.
Preferably, the port at described tube sample two ends is fixed on stingy seat by fixture.
Preferably, described driving mechanism is step motor type driving mechanism.
During use, opened by light source, tube sample holder is scratched between seat two; Start driving mechanism, tube sample does at the uniform velocity bending motion along the direction that coil draws in smooth groove, until reach maximum flexion; The projection when camera installation that now projects records maximum flexion, utilizes Vertical surveyors' staff to measure now tube sample and bends action H, utilizes horizontal ruler to measure distance L now between tube sample two ends, the bending angle value=H/L of tube sample.
Device provided by the invention overcomes the deficiencies in the prior art, directly can obtain the index of tube bending property, and structure is simple, and easy to operate, cost is low, and efficiency is high.
Accompanying drawing explanation
The tube flexibility measurement mechanism schematic diagram that Fig. 1 provides for the present embodiment;
The bending perspective view that Fig. 2 obtains for the present embodiment.
Embodiment
For making the present invention become apparent, hereby with a preferred embodiment, and accompanying drawing is coordinated to be described in detail below.
Fig. 1 is tube flexibility measurement mechanism schematic diagram provided by the invention, and described tube flexibility measurement mechanism comprises worktable 1, scale 2 (mutually vertical placement), fixture 3 (a pair), scratches seat 4, sample 5, stationary installation 6, smooth groove 7, coil 8, loop pillar 9, driving mechanism 10, light source 11 and projection camera installation 12.
Worktable 1 is made up of the horizontal table of orthogonal connection and vertical worktable.Smooth groove 7 is positioned at the inner side of horizontal table 1, is sample bending motion track.Scratching seat 4 and be located at two ends on smooth groove 7, can slide in the horizontal direction, is fixing sample two ends and designing.A pair stationary installation 6 is positioned at the centre position, inner side of horizontal table 1, coil 8 is wrapped on loop pillar 9, coil 8 two ends are walked around two stationary installations 6 respectively and are connected with the stingy seat 4 at two ends, and loop pillar 9 connects driving mechanism 10, realize coil lead sample inward at both ends move toward one another with this.
Scale 2 has two, mutually vertical placement, and a level is located at the inner side of horizontal table, and another root is vertically located on vertical worktable.And horizontal ruler is the scale of symmetrical scale, can Rapid reading.In the present embodiment, the mounting means of horizontal ruler on worktable 1 is preferably placed on the position near smooth groove 7, is convenient to the length reading sample fast.
Before test, sample 5 two ends are fixed on a pair and scratch on seat 4, finally fix sample two-port with fixture 3.Like this after startup driving mechanism 10, sample is bending could go on, successfully to record experiment desired data normal table.
Sample 5 is under the ordering about of driving mechanism 10, and at the uniform velocity bending motion is done in the direction of drawing along coil 8 in smooth groove 7.Light source 11 position just to sample 5 height, projection camera installation 12 be for record sample 5 flexible at utmost time projection.
Driving mechanism 10 is step motor type driving mechanism, and selection is convenient, and operability is comparatively strong, makes the measurement mechanism of this tube flexibility can measure the bending angle value of any one tube.
The operating process of above described tubular thing flexibility measurement mechanism is: first opened by light source 11, then tube sample 5 is clamped between stingy seat 4, and fix two-port with fixture 3, utilize horizontal symmetrical graduated scale can measure the length of sample rapidly, then the kinematic parameter (as rate of bending) on the driver of stepper motor is set, then stepper motor is started until reach maximum flexion, now can obtain the projection of maximum deflection radian, just Vertical surveyors' staff can be utilized to measure sample rapidly and to bend action, so just can calculate the ratio of the length of action/tube, be the bending angle value of tube.As shown in Figure 2, by projection camera installation obtain project into greatest circle arc-height (do not occur bend) time the ratio of action H/ specimen length L define the bending angle value of tube for this reason.
To sum up, single experimenter just quickly and easily can record the flexibility of tube, simple to operate, efficient.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present invention; can carry out simple deformation to technical scheme of the present invention, these simple deformation all belong to protection scope of the present invention.
Claims (5)
1. a tube flexibility measurement mechanism, it is characterized in that: comprise the horizontal table of orthogonal connection and vertical worktable, smooth groove (7) is located at the inner side of horizontal table (1), scratch seat (4) be located at the upper two ends of smooth groove (7) and can slide along smooth groove (7) horizontal direction, tube sample (5) two ends are located on the stingy seat (4) at two ends respectively; A pair stationary installation (6) is located in the middle of the inner side of horizontal table (1), coil (8) is wrapped on loop pillar (9), coil (8) two ends are walked around two stationary installations (6) respectively and are connected with the stingy seat (4) at two ends, and loop pillar (9) connects driving mechanism (10);
The inner side of horizontal table is provided with horizontal ruler, and vertical scale to be located in the middle part of vertical worktable and vertically with horizontal ruler to be placed;
Light source (11) and projection camera installation (12) are all just highly arranged tube sample (5).
2. a kind of tube flexibility measurement mechanism as claimed in claim 1, is characterized in that: described horizontal ruler is the scale of symmetrical scale.
3. a kind of tube flexibility measurement mechanism as claimed in claim 1, is characterized in that: the port at described tube sample (5) two ends is fixed on stingy seat (4) by fixture (3).
4. a kind of tube flexibility measurement mechanism as claimed in claim 1, is characterized in that: described driving mechanism (10) is step motor type driving mechanism.
5. a kind of tube flexibility measurement mechanism as claimed in claim 1, is characterized in that: during use, is opened by light source (11), and tube sample (5) is clamped in two and scratches between seat (4); Start driving mechanism (10), tube sample (5) does at the uniform velocity bending motion, until reach maximum flexion along the direction that coil (8) draws in smooth groove (7); The camera installation (12) that now projects records projection during maximum flexion, Vertical surveyors' staff is utilized to measure the bending action H of now tube sample (5), horizontal ruler is utilized to measure distance L now between tube sample (5) two ends, the bending angle value=H/L of tube sample (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510736704.XA CN105258615A (en) | 2015-11-03 | 2015-11-03 | Curvature measuring device of pipe-shaped object |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510736704.XA CN105258615A (en) | 2015-11-03 | 2015-11-03 | Curvature measuring device of pipe-shaped object |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105258615A true CN105258615A (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510736704.XA Pending CN105258615A (en) | 2015-11-03 | 2015-11-03 | Curvature measuring device of pipe-shaped object |
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| CN (1) | CN105258615A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767359A (en) * | 2016-12-20 | 2017-05-31 | 重庆中烟工业有限责任公司 | A kind of crimpness detection means |
| CN107271295A (en) * | 2017-07-03 | 2017-10-20 | 东华大学 | Blood vessel covered stent bending force and time straight power dynamic checkout unit and method |
| CN109374459A (en) * | 2018-09-06 | 2019-02-22 | 东华大学 | A kind of orthopaedics suture dynamic bending friction performance testing device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3754334A (en) * | 1971-07-30 | 1973-08-28 | R Haapala | Garland marker |
| CN201974144U (en) * | 2011-03-06 | 2011-09-14 | 青岛海隆机械集团有限公司 | Bending and straight degree detection device |
| CN202885656U (en) * | 2012-10-15 | 2013-04-17 | 秦学宇 | Machine crossbow |
| CN104482830A (en) * | 2014-11-24 | 2015-04-01 | 芜湖新兴铸管有限责任公司 | Bar curvature measuring device |
-
2015
- 2015-11-03 CN CN201510736704.XA patent/CN105258615A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3754334A (en) * | 1971-07-30 | 1973-08-28 | R Haapala | Garland marker |
| CN201974144U (en) * | 2011-03-06 | 2011-09-14 | 青岛海隆机械集团有限公司 | Bending and straight degree detection device |
| CN202885656U (en) * | 2012-10-15 | 2013-04-17 | 秦学宇 | Machine crossbow |
| CN104482830A (en) * | 2014-11-24 | 2015-04-01 | 芜湖新兴铸管有限责任公司 | Bar curvature measuring device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106767359A (en) * | 2016-12-20 | 2017-05-31 | 重庆中烟工业有限责任公司 | A kind of crimpness detection means |
| CN107271295A (en) * | 2017-07-03 | 2017-10-20 | 东华大学 | Blood vessel covered stent bending force and time straight power dynamic checkout unit and method |
| CN109374459A (en) * | 2018-09-06 | 2019-02-22 | 东华大学 | A kind of orthopaedics suture dynamic bending friction performance testing device and method |
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Application publication date: 20160120 |
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