CN214408380U

CN214408380U - Modular bursting performance detection device and mechanical testing machine

Info

Publication number: CN214408380U
Application number: CN202120170000.1U
Authority: CN
Inventors: 崔蓉蓉; 张伟
Original assignee: Beijing Yh Biomax Biologic Technologies Co ltd
Current assignee: Beijing Yh Biomax Biologic Technologies Co ltd
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2021-10-15
Anticipated expiration: 2031-01-21

Abstract

The application relates to a modularized bursting performance detection device, which comprises an upper clamp, a bursting part, a snap ring and a lower clamp; the upper fixture and the lower fixture are suitable for being respectively arranged at the upper part and the lower part of the mechanical testing machine, and the lower fixture is provided with a pre-opening hole; the bursting part is detachably connected with the lower end of the upper clamping apparatus, and the bursting part has more than one specification; more than one snap ring is arranged at the upper end of the lower fixture in a stacking manner; the article to be tested is clamped between the lower clamping device and the clamping ring or between two adjacent clamping rings, the mechanical testing machine is started, and the bursting part can penetrate through the clamping ring to extend into the pre-opening hole and reciprocate in a preset stroke. Through with mechanical test machine looks adaptation, need not to purchase new equipment, reasonable reduce cost changes different bursting parts according to different detection demands, the equipment rapidly, the suitability is high, folds and falls to set up a plurality of snap rings, not only can detect thin film material, still can detect the sheet material that has certain thickness, further improves the device's application scope.

Description

Modular bursting performance detection device and mechanical testing machine

Technical Field

The application relates to the technical field of membrane structure engineering, in particular to a modularized bursting performance detection device and a mechanical testing machine.

Background

In the field of materials science, common mechanical property characterization methods include tension, compression, bending, shearing, torsion and the like, and the tests can be completed through mechanical tests. In addition to conventional tensile and tear tests, the film materials often need to be combined with actual use conditions to consider the bursting resistance of the film materials. Such as biofilm-type materials (pericardium, dura mater, and other patches), when implanted in the body, are often subjected to internal pressure acting on the surface of the material, which can burst or burst and eventually fail.

Typically, non-conventional tests, such as burst tests, typically purchase burst test equipment. At present, most of the commercially available bursting performance detection equipment is found to be desktop equipment through retrieval, and if one detection equipment is bought again, a large amount of expenses are required. For a laboratory needing to characterize the mechanical property of the material, the mechanical testing machine is necessary experimental equipment, and the existing bursting device is short of a bursting detection device which can be directly installed on the existing experimental equipment to reduce the cost and has a wide application scene.

Disclosure of Invention

In view of this, the present application provides a modularized bursting property detection device and a mechanical testing machine, which are suitable for being installed on the mechanical testing machine, and include an upper clamp, a bursting portion, a snap ring and a lower clamp; the upper fixture and the lower fixture are suitable for being respectively arranged at the upper part and the lower part of the mechanical testing machine, and the lower fixture is provided with a pre-opening hole; the bursting part is detachably connected with the lower end of the upper clamping apparatus, and the bursting part has more than one specification; the number of the snap rings is more than one, and the snap rings are arranged at the upper end of the lower fixture in a stacked manner; and the article to be tested is clamped between the lower clamping apparatus and the clamping ring or between the two adjacent clamping rings, the mechanical testing machine is started, and the bursting part can penetrate through the clamping ring to extend into the pre-opening hole and reciprocate in a preset stroke.

In one possible implementation, the bursting part comprises a mandril and a probe; the ejector rod is fixedly connected with the upper fixture, the probe is arranged at the lower end of the ejector rod, and the bottom of the probe can be in contact with the to-be-detected article.

In one possible implementation, the ratio of the diameter of the ejector rod to the inner diameter of the clamping ring is less than 1/5, and the probe is a pointed probe.

In a possible implementation mode, the ratio of the diameter of the ejector rod to the inner diameter of the clamping ring is in the range of 1/5-6/7, and the probe is a column head probe.

In one possible implementation, the ratio of the diameter of the mandril to the inner diameter of the snap ring is larger than 6/7, and the probe is a ball head probe.

In a possible implementation manner, the bursting portion is a cylinder, and the bursting portion, the snap ring and the longitudinal projection of the pre-hole are concentrically arranged.

In a possible implementation manner, the outer diameters of more than two snap rings are the same, and the inner diameter of each snap ring is smaller than the diameter of the pre-opened hole.

In a possible implementation manner, the lower fixture is provided with first mounting holes, the snap ring is provided with second mounting holes, each first mounting hole is communicated with more than one second mounting hole, and the snap ring is fixed to the lower fixture in a threaded manner.

In a possible implementation manner, the outer edges of two opposite sides of the snap ring are provided with grooves and protrusions which are matched with each other, the same grooves are also arranged at corresponding positions of the upper end surface of the lower fixture, and the snap ring is abutted to the lower fixture or two adjacent snap rings.

The application also provides a mechanical testing machine which comprises a main body frame, a movable cross beam and a mechanical sensor, wherein the mechanical testing machine is provided with the modular bursting performance detection device in any one implementation mode; the movable cross beam is arranged on the main body frame, can move up and down in a reciprocating mode and is fixedly connected with the upper clamping apparatus, the mechanical sensor is fixed on the movable cross beam and is electrically connected with the bursting part, and a base of the mechanical testing machine is fixedly connected with the lower clamping apparatus.

The utility model has the advantages that: through with mechanical test machine looks adaptation, do not need purchase new equipment, reasonable reduce cost can detect the different burst portion of demand quick replacement according to the difference, have the equipment rapidly, characteristics that suitability is high to fold and fall and set up a plurality of snap rings, not only can detect thin film material, can also detect the sheet material that has certain thickness, further improve the device's application scope.

Other features and aspects of the present application will become apparent from the following detailed description of exemplary embodiments, which proceeds with reference to the accompanying drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate exemplary embodiments, features, and aspects of the application and, together with the description, serve to explain the principles of the application.

FIG. 1 illustrates a cross-sectional view of a modular burst performance testing apparatus in accordance with one embodiment of the present application;

FIG. 2 illustrates a schematic view of various different shaped breaching sections in accordance with an embodiment of the present application;

FIG. 3 illustrates a cross-sectional view of a ball nose probe coupled to a lower fixture according to an embodiment of the present application;

FIG. 4 shows a cross-sectional view of a snap ring, an object under test, and a lower clamp connection according to an embodiment of the present application.

Detailed Description

Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers can indicate functionally identical or similar elements. While the various aspects of the embodiments are presented in drawings, the drawings are not necessarily drawn to scale unless specifically indicated.

It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention or for simplicity in description, and do not indicate or imply that the device or element so indicated must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration. Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments.

Furthermore, in the following detailed description, numerous specific details are set forth in order to provide a better understanding of the present application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, methods, means, elements and circuits that are well known to those skilled in the art have not been described in detail so as not to obscure the present application.

As shown in fig. 1 to 4, a modularized bursting property detection device, which is suitable for being installed on a mechanical testing machine 50, comprises an upper clamp 10, a bursting part 20, a snap ring 30 and a lower clamp 40; the upper fixture 10 and the lower fixture 40 are suitable for being respectively arranged at the upper part and the lower part of the mechanical testing machine 50, and the lower fixture 40 is provided with a pre-opening 41; the bursting part 20 is detachably connected with the lower end of the upper clamping apparatus 10, and the bursting part 20 has more than one specification; more than one clamping rings 30 are stacked and arranged at the upper end of the lower clamping apparatus 40; the object 60 to be tested is clamped and fixed between the lower clamping apparatus 40 and the clamping ring 30 or between two adjacent clamping rings 30, the mechanical testing machine 50 is started, and the bursting part 20 can penetrate through the clamping ring 30 to extend into the pre-opening hole 41 and can reciprocate within a preset stroke.

In this embodiment, it should be pointed out at first that the device is used for detecting membrane class material usually, like cloth, paper, biomembrane, artificial blood vessel etc. the modularization bursting property detection device of this application can be used through assembling with mechanical testing machine 50, do not need purchase new equipment, reasonable reduce cost, can detect the different bursting part 20 of quick replacement according to different detection demands, it is fast to have the equipment, the high characteristics of suitability, and overlap and set up a plurality of snap rings 30, not only can detect thin membrane material, can also detect the sheet material that has certain thickness, further improve the application scope of the device.

More specifically, the object 60 to be tested is clamped and fixed between the lower fixture 40 and the snap ring 30 or between two adjacent snap rings 30, so as to ensure that the object 60 to be tested can be successfully and reasonably detected.

As shown in FIG. 2, in one embodiment, the bursting component 20 comprises a mandrel 21 and a probe 22; the ejector rod 21 is fixedly connected with the upper fixture 10, the probe 22 is arranged at the lower end of the ejector rod 21, and the bottom of the probe 22 can be in contact with the object 60 to be measured.

In the embodiment, the mandril 21 is in threaded connection with the upper fixture 10, the diameter of the interface is 5-20 mm, and preferably, a 10mm diameter screw hole can be selected for connection. The mandril 21 is fixedly connected with the probe 22, and the probe 22 is designed to be spherical, so that the inaccuracy of the test result caused by stress concentration in the process of implementing the test is avoided.

Furthermore, because the ejector rod 21 is universal with the interface of the upper fixture 10, the diameter of the uppermost end of the ejector rod 21 is fixed and is provided with threads, a platform with a larger diameter is designed at the part below the threads, and after the bolt rotates to a certain degree, the ejector rod 21 cannot be screwed into the upper fixture 10 continuously, so that the connection stability is increased. The remainder of the carrier rod 21, apart from the threaded section, may consist of several sections of cylinders or cones of different diameters. The diameter of the ejector rod 21 is 1.0-20 mm, and the total length is 30-120 mm. The probe 22 connected with the top rod 21 is circular arc or spherical, and the diameter of the probe is 0.20 to 50 mm. Optionally, the ejector rod 21 and the ejector rod 21 of the probe 22 with different diameters are connected with the upper fixture 10 through screw holes.

In one embodiment, as shown in FIG. 2, the ratio of the diameter of the stem 21 to the inner diameter of the collar 30 is less than 1/5, and the probe 22 is a tip probe.

In one embodiment, the ratio of the diameter of the ejector rod 21 to the inner diameter of the snap ring 30 is in the range of 1/5-6/7, and the probe 22 is a column head probe.

In one embodiment, the ratio of the diameter of the ejector rod 21 to the inner diameter of the snap ring is greater than 6/7, and the probe 22 is a ball-nose probe.

In one embodiment, as shown in fig. 3, the rupture portion 20 is a cylinder, and the longitudinal projections of the rupture portion 20, the snap ring 30 and the pre-opening 41 are concentrically arranged.

In one embodiment, the outer diameters of two or more snap rings 30 are the same, and the inner diameter of the snap rings 30 is smaller than the diameter of the pre-opening 41.

In one embodiment, the lower fixture 40 is provided with first mounting holes, the snap ring 30 is provided with second mounting holes, each first mounting hole is communicated with more than one second mounting hole, and the snap ring 30 is screwed and fixed with the lower fixture 40.

In this embodiment, the snap ring 30 is fastened to the lower fixture 40 by a screw. One or more snap rings 30 can be used according to the requirement, and the outer diameters of the snap rings 30 with different inner diameters are consistent without limitation. During testing, the round holes of the probe 22, the snap ring 30 and the lower fixture 40 are concentric. The snap ring 30, the object to be measured 60 and the lower fixture 40 are fixed by bolts. After the object 60 to be tested is placed and fixed, the mechanical testing machine 50 is started to move at a set speed until the object 60 to be tested is burst, and the maximum load is recorded.

As shown in fig. 4, according to the detection requirement of the object to be detected, the ejector rod 21 with the probes 22 with different diameters can be selected to be connected with the upper fixture 10 in the bayonet manner, and then the snap ring 30 at the corresponding point is selected to fix the object to be detected 60. The upper and lower clamps 40 do not need to be disassembled and assembled, and the sensor part and the lower base part of the testing machine do not need to be disassembled and assembled.

The specific structures of the upper fixture 10 and the lower fixture 40 are not specifically described, and only the upper fixture 10 and the lower fixture 40 need to be matched with the mechanical testing machine 50.

In one embodiment, the outer edges of two opposite sides of the snap ring 30 are provided with matching grooves and protrusions, the corresponding positions of the upper end surface of the lower fixture 40 are also provided with the same grooves, and the snap ring 30 abuts against the lower fixture 40 or two adjacent snap rings 30.

In one embodiment, the inner diameter of the lower clamp 40 is designed to be the same as the inner diameter of the snap ring 30. During testing, the object 60 to be tested is placed on the upper surface of the lower fixture 40, and the object 60 to be tested is fixed by the snap ring 30 and the screw.

The probe 22 is designed to be a spherical probe 22, the diameter of the ejector rod 21 is 9.5mm, the diameter of the spherical probe 22 is 9.5mm, the outer diameter of the snap ring 30 is 50mm, the inner diameter is 11.3mm, and the lower clamp 40 is designed to be cylindrical, the outer diameter is 50mm and the inner diameter is 11.3 mm. The upper surface of the lower fixture 40 near the pre-opening 41 is provided with a groove for placing a rubber gasket for fixing the object 60 to be measured and increasing friction. The fixture and the snap ring 30 are installed and fixed, the machine is started to move the ejector rod 21, and the ejector rod 21, the snap ring 30 and the base are confirmed to be concentric. The jack 21 is moved to a set position. Loosening the clamping ring 30 to place the object 60 to be tested, tightening the screw to fix the object 60 to be tested, starting the mechanical testing machine 50, moving the ejector rod 21 downwards at the speed of 50 mm-300/min, and recording the load when the object 60 to be tested breaks. The report should contain the probe 22 diameter, velocity and load.

In this embodiment, the kit can be used for testing a film-like biological membrane, such as an artificial blood vessel, an absorbable oral patch, and the like.

In one embodiment, a larger diameter spherical probe and a small diameter probe are used for testing a biological patch product, such as a dural patch, which is subjected to certain pressure and is clinically used for repairing a larger wound surface. When the probe with the larger diameter is used for detecting the capacity of resisting damage when bearing certain pressure, the probe with the larger diameter is 20-40 mm, and the probe with the smaller diameter is used for detecting the capacity of resisting damage when the patch bears local pressure. Preferably, a first mandril with the diameter of 30mm and a second mandril with the diameter of 1.0mm of the probe are designed as the replacement mandrils. The lower fixture 40 is designed into a T shape, the outer diameter is 70mm, the diameter of the pre-opening hole 41 is 33mm, and the depth is 60 mm. The snap ring 30 is three in quantity, and the specification is different, and first snap ring is diameter 33mm, thickness 5mm, and second snap ring and third snap ring internal diameter are 10mm, thickness 5mm, and snap ring 30 external diameter is unanimous with fixture 40 external diameter down.

In this embodiment, when the first lift pin 21 is used for testing, the object 60 to be tested is placed on the upper surface of the lower fixture 40, the first snap ring is covered, the snap ring 30 and the lower fixture 40 are fixed by using screws, and the object 60 to be tested is clamped between the lower fixture 40 and the snap ring 30. After the instrument is debugged, the probe 22 is moved at a speed of 50-300 mm/min, and the maximum load of the object to be tested 60 during bursting is tested. After the large probe 22 is tested, the probe 22 can be rotated to be disassembled, and similarly, probes 22 with different specifications can be assembled. The lower fixture 40 is placed with the second clamp ring 30 thereon, and then the object 60 to be tested is placed thereon, covered with the third clamp ring 30, fastened using screws, and then the test can be performed.

More specifically, when multiple types of test objects 60 are to be tested under multiple different test parameters, a series of kits can be designed to reduce the number of times the fixture is removed and installed. The diameter range of a screw hole of the universal interface of the upper fixture 10 is 5-20 mm, and preferably, a screw hole with the diameter of 10mm is selected as the universal interface. In this case, the fixture 40 is designed to have a T-shaped appearance with an outer diameter of 70mm and a middle pre-opening 41 with a diameter of 35mm, and the related assembly includes, but is not limited to, the following table:

based on any preceding modularization bursting property detection device, this application still provides a mechanical testing machine 50. The mechanical testing machine 50 of the embodiment of the present application includes the modular bursting property detection device as described in any one of the above. By installing any one of the modularized bursting property detection devices on the mechanical testing machine 50, when the bursting property is tested, only the bursting top 20 needs to be disassembled and assembled without replacing new equipment, so that the testing cost is reduced.

Specifically, the mechanical testing machine 60 includes a main body frame 52, a movable cross beam 51 and a mechanical sensor, and the mechanical testing machine 60 is provided with the modular bursting performance detection device in any of the above embodiments; the movable beam 51 is arranged on the main body frame 52, can move up and down in a reciprocating manner, and is fixedly connected with the upper fixture 10, the mechanical sensor is fixed on the movable beam 51 and is electrically connected with the bursting part 20, and the base of the mechanical testing machine 50 is fixedly connected with the lower fixture 40.

Having described embodiments of the present application, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A modularized bursting property detection device is characterized by being suitable for being installed on a mechanical testing machine and comprising an upper clamp, a bursting part, a clamping ring and a lower clamp;

the upper fixture and the lower fixture are suitable for being respectively arranged at the upper part and the lower part of the mechanical testing machine, and the lower fixture is provided with a pre-opening hole;

the bursting part is detachably connected with the lower end of the upper clamping apparatus, and the bursting part has more than one specification;

the number of the snap rings is more than one, and the snap rings are arranged at the upper end of the lower fixture in a stacked manner;

the bursting part can penetrate through the clamping ring to extend into the pre-opening hole and can reciprocate in a preset stroke.

2. The modular bursting performance testing device of claim 1 wherein the bursting portion comprises a ram and a probe;

the ejector rod is fixedly connected with the upper fixture, and the probe is arranged at the lower end of the ejector rod;

the bottom of the probe can be contacted with an object to be detected.

3. The modular bursting performance testing device of claim 2 wherein the ratio of the diameter of the ejection rod to the inner diameter of the snap ring is less than 1/5 and the probe is a pointed probe.

4. The modular bursting performance testing device of claim 2 wherein the ratio of the diameter of the ejection rod to the internal diameter of the snap ring is in the range of 1/5 to 6/7 and the probe is a column head probe.

5. The modular bursting performance testing device of claim 2 wherein the ratio of the diameter of the ejection rod to the inner diameter of the snap ring is greater than 6/7 and the probe is a ball head probe.

6. The modular bursting property detection device of claim 2 wherein the bursting portion is a cylinder and the bursting portion, the snap ring and the pre-perforated hole are concentrically arranged in longitudinal projection.

7. The apparatus of claim 1, wherein the outer diameters of two or more of the snap rings are the same, and the inner diameters of the snap rings are smaller than the diameter of the pre-opening.

8. The modular bursting performance testing device of claim 1 wherein the lower clamp is provided with first mounting holes, the snap ring is provided with second mounting holes, each first mounting hole is communicated with more than one second mounting hole, and the snap ring is screwed and fixed with the lower clamp.

9. The device for detecting the modular bursting property as claimed in claim 8, wherein the outer edges of two opposite sides of the snap ring are provided with matched grooves and protrusions, the same grooves are also arranged at corresponding positions of the upper end surface of the lower clamping apparatus, and the snap ring is abutted against the lower clamping apparatus or two adjacent snap rings.

10. A mechanical testing machine is characterized by comprising a main body frame, a movable cross beam and a mechanical sensor, wherein the mechanical testing machine is provided with the modular bursting property detection device of any one of claims 1 to 9;

the movable cross beam is arranged on the main body frame, can move up and down in a reciprocating manner, and is fixedly connected with the upper clamping apparatus, and the mechanical sensor is fixed on the movable cross beam and is electrically connected with the bursting part;

and the base of the mechanical testing machine is fixedly connected with the lower fixture.