CN117054268A - A testing device suitable for fatigue strength experiments of silicon nitride ceramic materials - Google Patents
A testing device suitable for fatigue strength experiments of silicon nitride ceramic materials Download PDFInfo
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- CN117054268A CN117054268A CN202311030654.4A CN202311030654A CN117054268A CN 117054268 A CN117054268 A CN 117054268A CN 202311030654 A CN202311030654 A CN 202311030654A CN 117054268 A CN117054268 A CN 117054268A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/32—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces
- G01N3/36—Investigating strength properties of solid materials by application of mechanical stress by applying repeated or pulsating forces generated by pneumatic or hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
- G01N3/068—Special adaptations of indicating or recording means with optical indicating or recording means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0005—Repeated or cyclic
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/0641—Indicating or recording means; Sensing means using optical, X-ray, ultraviolet, infrared or similar detectors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a detection device suitable for a fatigue strength experiment of a silicon nitride ceramic material, which comprises a movable frame, a fixed frame and an infrared sensor, wherein the movable frame, the fixed frame and the infrared sensor are arranged on an experiment table, two ends of a silicon nitride ceramic wire are respectively clamped through clamping mechanisms on the movable frame and the fixed frame, in order to ensure the clamping stability of the silicon nitride ceramic wire, the clamping contact area is increased in a clamping plate mode, meanwhile, the inner sides of the two clamping mechanisms are also provided with anti-falling mechanisms, and the effect of preventing the rotation and the falling of the silicon nitride ceramic wire is realized through the structural arrangement of the anti-falling mechanisms. The detection device provided by the invention has the advantages that the stress length of the silicon nitride ceramic wire which is held is well improved, the clamping stability and the stability of the silicon nitride ceramic wire when being stretched are improved, and the accuracy of experimental measurement is effectively improved.
Description
Technical Field
The invention relates to the technical field of material performance detection, in particular to a detection device suitable for a fatigue strength experiment of a silicon nitride ceramic material.
Background
Ceramics generally have the characteristics of light weight, heat insulation, heat resistance and corrosion resistance, and are widely applied to the fields of filtration, catalysis, sound absorption, gas sensitivity, artificial bones and the like. Si compared with oxide-based ceramics 3 N 4 The ceramic has high strength, low dielectric constant and stability, has application prospect as a novel 'structure-function' integrated material, and causes extensive research.
The stress of each point of the ceramic material periodically changes along with time in the working process, the stress periodically changing along with time is called alternating stress, and under the action of the alternating stress, the stress born by the part is lower than the yield point of the material, but cracks or sudden complete fracture easily occur after long-time working.
At present, the fatigue problem is the most serious cause of failure of a plurality of parts, and is to accurately calculate the service life of the parts, so that the parts work within the fatigue limit, the existing fatigue calculation is carried out by manually stretching a metal wire by hands, counting the times of breaking, manually operating by the personnel, wasting manpower, having great workload, and calculating the numerical value by manual statistics, wherein the error of the numerical value possibly causes the fatigue strength calculation error, so that the fatigue strength detection equipment for the metal material is provided.
Disclosure of Invention
The invention aims to provide a detection device suitable for a fatigue strength experiment of a silicon nitride ceramic material, so as to solve the problems in the prior art, improve the stress length of a silicon nitride ceramic wire to be held, improve the stability of clamping and the stability of the silicon nitride ceramic wire when being stretched, prevent the silicon nitride ceramic wire from being separated, and effectively improve the accuracy of experimental measurement.
In order to achieve the above object, the present invention provides the following solutions: the invention provides a detection device suitable for a fatigue strength experiment of a silicon nitride ceramic material, which comprises
The fixing frame is arranged on the experiment table, and the fixed end of the silicon nitride ceramic wire is clamped in the fixing frame; and
the experiment table is provided with a sliding rail, the sliding rail is assembled on the sliding rail in a sliding way, the moving end of the silicon nitride ceramic wire is clamped in the sliding rail, and the telescopic cylinder is used for driving the sliding rail to reciprocate along the sliding rail; and
the infrared sensor is arranged on the experiment table, and is used for sensing the stretching times of the movable frame and uploading the stretching times to a control module of a computer for recording; and
the clamping mechanisms are arranged in the fixing frame and the moving frame and used for clamping the end parts of the silicon nitride ceramic wires, each clamping mechanism comprises an upper clamping plate and a lower clamping plate, screw rods are respectively arranged on the fixing frame and the moving frame, the back surfaces of the upper clamping plates and the lower clamping plates are assembled at the nut positions on the screw rods through moving blocks, and the screw rods rotate to drive the upper clamping plates and the lower clamping plates to move up and down so as to clamp or loosen the silicon nitride ceramic wires; and
the anti-falling mechanism is arranged on the inner sides of the clamping mechanisms on the fixing frame and the moving frame, the anti-falling mechanism comprises an anti-falling disc, and two ends of the silicon nitride ceramic wire respectively penetrate through the anti-falling mechanism and then are clamped by the clamping mechanisms.
Preferably, the fixing frame is fixed at one end of the sliding rail, and the horizontal central lines of the moving frame and the fixing frame are overlapped.
Preferably, a cylinder seat of the telescopic cylinder is arranged on the experiment table, a connecting rod is fixed at the tail end of a telescopic rod of the telescopic cylinder, and the tail end of the connecting rod is connected with the movable frame; and the movable frame is driven to reciprocate along the sliding rail through the telescopic motion of the telescopic cylinder.
Preferably, the upper clamping plate comprises an upper clamping plate I and an upper clamping plate II, the lower clamping plate comprises a lower clamping plate I and a lower clamping plate II, the upper clamping plate I and the lower clamping plate I are arranged on the movable frame in an up-down corresponding mode, a screw rod on the movable frame is divided into an upper section and a lower section, the upper clamping plate I is assembled on the upper section of the screw rod I through a nut, the lower clamping plate I is assembled on the lower section of the screw rod I through a nut, and the tensioning end part of the silicon nitride ceramic wire is clamped between the upper clamping plate I and the lower clamping plate I.
Preferably, the second upper clamping plate and the second lower clamping plate are arranged on the fixing frame in an up-down corresponding mode, the second screw rod on the fixing frame is also divided into an upper section and a lower section, the second upper clamping plate is assembled on the upper section of the second screw rod through a nut, the second lower clamping plate is assembled on the lower section of the second screw rod through a nut, and the fixed end part of the silicon nitride ceramic wire is clamped between the second upper clamping plate and the second lower clamping plate.
Preferably, the anti-drop disc is disc-shaped, a plurality of arc-shaped internal teeth are uniformly distributed on the inner wall of the anti-drop disc, a penetrating cylinder is arranged in the inner cavity of the anti-drop disc, the silicon nitride ceramic wire is penetrated in the penetrating cylinder, a plurality of external teeth are uniformly distributed on the outer wall surface of the penetrating cylinder, and the external teeth are correspondingly inserted into the internal teeth.
Preferably, the anti-drop mechanism further comprises a limiting cover, the limiting cover is arranged on the inner side of the anti-drop disc, a through hole for the silicon nitride ceramic wire to pass through is formed in the middle of the limiting cover, and the through hole is in a mode of decreasing inner diameter along the penetrating direction of the silicon nitride ceramic wire.
Preferably, one or more limiting teeth are arranged on the upper side and the lower side of the via hole, a connecting rod mechanism is connected to the top of a tooth body of each limiting tooth, the top of each connecting rod mechanism extends out of the outer side of the limiting cover, a movable sleeve is arranged at the outer end of each connecting rod mechanism, and closing and opening operations of each limiting tooth are achieved by lifting or pressing the corresponding movable sleeve.
Compared with the prior art, the invention has the following beneficial technical effects:
the detection device suitable for the fatigue strength experiment of the silicon nitride ceramic material comprises a movable frame, a fixed frame and an infrared sensor which are arranged on an experiment table, wherein two ends of a silicon nitride ceramic wire are respectively clamped through clamping mechanisms on the movable frame and the fixed frame, in order to ensure the clamping stability of the silicon nitride ceramic wire, the clamping contact area is increased in a clamping plate mode, meanwhile, anti-falling mechanisms are further arranged on the inner sides of the two clamping mechanisms, and the effect of preventing the rotation and the falling of the silicon nitride ceramic wire is achieved through the structural arrangement of the anti-falling mechanisms. The moving frame moves back and forth on the sliding rail, so that the silicon nitride ceramic wire is continuously stretched, the stretching times of the moving frame are sensed by the infrared sensor, the stretching numerical value is more accurate, the fatigue strength of the silicon nitride ceramic material is detected by the machine, and the purposes of saving manpower, reducing the workload and realizing accurate numerical statistics are achieved. The detection device provided by the invention has the advantages that the stress length of the silicon nitride ceramic wire which is held is well improved, the clamping stability and the stability of the silicon nitride ceramic wire when being stretched are improved, and the accuracy of experimental measurement is effectively improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of the overall structure of a detection device suitable for fatigue strength experiments of silicon nitride ceramic materials in an embodiment of the invention;
FIG. 2 is a schematic structural view of the anti-drop mechanism;
FIG. 3 is an enlarged view at A in FIG. 2;
FIG. 4 is a schematic view of the internal structure of the anti-drop tray;
wherein, 1, the experiment table; 2. a moving rack; 21. an upper clamping plate I; 22. a first lower clamping plate; 23. a first screw rod; 24. a pretightening force measuring sensor I; 3. a fixing frame; 31. an upper clamping plate II; 32. a second lower clamping plate; 33. a second screw rod; 34. a second pretightening force measuring sensor; 4. a slide rail; 5. a telescopic cylinder; 51. a telescopic rod; 52. a connecting rod; 6. an infrared sensor; 7. silicon nitride ceramic wire; 8. an anti-drop disc; 81. internal teeth; 82. an outer tooth; 83. a penetrating cylinder is arranged; 9. a limit cover; 91. a first limiting tooth; 92. limiting teeth II; 93. a first connecting rod; 94. a second connecting rod; 95. a connecting rod III; 96. and (5) moving the sleeve.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a detection device suitable for a fatigue strength experiment of a silicon nitride ceramic material, so as to solve the problems in the prior art, improve the stress length of a silicon nitride ceramic wire to be held, improve the stability of clamping and the stability of the silicon nitride ceramic wire when being stretched, prevent the silicon nitride ceramic wire from being separated, and effectively improve the accuracy of experimental measurement.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
As shown in FIGS. 1-4, the invention provides a detection device suitable for fatigue strength test of silicon nitride ceramic material, comprising
The fixing frame 3, the fixing frame 3 is installed on the experiment table 1, and the fixed end of the silicon nitride ceramic wire 7 is clamped in the fixing frame 3; and
the movable frame 2 is provided with a sliding rail 4 on the experiment table 1, the movable frame 2 is assembled on the sliding rail 4 in a sliding way, the movable end of the silicon nitride ceramic wire 7 is clamped in the movable frame 2, and the telescopic cylinder 5 is used for driving the movable frame 2 to reciprocate along the sliding rail 4; and
the infrared sensor 6 is arranged on the experiment table 1, and the infrared sensor 6 is used for sensing the stretching times of the movable frame 2 and uploading the stretching times to a control module of a computer for recording; and
the clamping mechanisms are arranged in the fixing frame 3 and the moving frame 2 and used for clamping the end parts of the silicon nitride ceramic wires 7, each clamping mechanism comprises an upper clamping plate and a lower clamping plate, screw rods are respectively arranged on the fixing frame 3 and the moving frame 2, the back surfaces of the upper clamping plates and the lower clamping plates are assembled at the positions of nuts on the screw rods through moving blocks, and the screw rods rotate to drive the upper clamping plates and the lower clamping plates to move up and down so as to clamp or loosen the silicon nitride ceramic wires 7; and
the anti-falling mechanism is arranged on the inner sides of the clamping mechanisms on the fixed frame 3 and the movable frame 2, the anti-falling mechanism comprises an anti-falling disc 8, and two ends of the silicon nitride ceramic wire 7 respectively penetrate through the anti-falling mechanism and then are clamped by the clamping mechanisms.
In one embodiment, the fixed frame 3 is fixed at one end of the sliding rail 4, and the horizontal central lines of the movable frame 2 and the fixed frame 3 coincide.
In one embodiment, a cylinder seat of the telescopic cylinder 5 is arranged on the experiment table 1, a connecting rod 52 is fixed at the tail end of a telescopic rod 51 of the telescopic cylinder 5, and the tail end of the connecting rod 52 is connected with the movable frame 2; the movable frame 2 is driven to reciprocate along the sliding rail 4 through the telescopic motion of the telescopic cylinder 5.
In one embodiment, the upper clamping plate comprises an upper clamping plate I21 and an upper clamping plate II 31, the lower clamping plate comprises a lower clamping plate I22 and a lower clamping plate II 32, the upper clamping plate I21 and the lower clamping plate I22 are arranged on the movable frame 2 in an up-down corresponding mode, a screw rod I23 on the movable frame 2 is divided into an upper section and a lower section, the upper clamping plate I21 is assembled on the upper section of the screw rod I23 through a nut, the lower clamping plate I22 is assembled on the lower section of the screw rod I23 through a nut, and the tensioning end part of the silicon nitride ceramic wire 7 is clamped between the upper clamping plate I21 and the lower clamping plate I22. The upper clamping plate II 31 and the lower clamping plate II 32 are arranged on the fixing frame 3 in an up-down corresponding mode, the screw rod II 33 on the fixing frame 3 is also divided into an upper section and a lower section, the upper clamping plate II 31 is assembled on the upper section of the screw rod II 33 through a nut, the lower clamping plate II 32 is assembled on the lower section of the screw rod II 33 through a nut, and the fixed end part of the silicon nitride ceramic wire 7 is clamped between the upper clamping plate II 31 and the lower clamping plate II 32.
In the process of clamping the silicon nitride ceramic wire 7, firstly, the fixed end of the silicon nitride ceramic wire 7 passes through an anti-drop mechanism on the fixing frame 3 and then enters between the upper clamping plate II 31 and the lower clamping plate II 32, the position of the lower clamping plate II 32 is kept still, and only the screw rod II 33 is driven to rotate so that the upper clamping plate II 31 moves downwards to clamp the silicon nitride ceramic wire 7; after the fixed end of the silicon nitride ceramic wire 7 is clamped, the tensioning end of the silicon nitride ceramic wire 7 passes through the anti-drop mechanism on the movable frame 2, so that the tensioning end is positioned between the first upper clamping plate 21 and the second lower clamping plate 32, and the position of the first lower clamping plate 22 is kept still. After the two ends of the silicon nitride ceramic wire 7 are clamped, the lower section of the first screw rod 23 and the lower section of the second screw rod 33 are synchronously driven to finely adjust the clamping state of the two ends of the silicon nitride ceramic wire 7, so that the required pretightening force is ensured.
In one embodiment, in order to detect whether the clamping pretightening force of the moving frame 2 and the fixed frame 3 on the silicon nitride ceramic wire 7 meets the requirement, a pretightening force measuring sensor I24 and a pretightening force measuring sensor II 34 are respectively arranged on the moving frame 2 and the fixed frame 3, and whether the clamping of the two ends of the silicon nitride ceramic wire 7 is stable is judged through the pretightening force measuring sensors.
In one embodiment, as shown in fig. 4, the anti-slip disc 8 is disc-shaped, a plurality of arc-shaped inner teeth 81 are uniformly distributed on the inner wall of the anti-slip disc 8, a penetrating cylinder 83 is arranged in the inner cavity of the anti-slip disc 8, the silicon nitride ceramic wire 7 is penetrated in the penetrating cylinder 83, a plurality of outer teeth 82 are uniformly distributed on the outer wall surface of the penetrating cylinder 83, and the outer teeth 82 are correspondingly inserted into the inner teeth 81. In the experimental process, as the reciprocating motion of the movable frame 2 and the repeated tensioning of the silicon nitride ceramic wire 7 exist, the situation that the silicon nitride ceramic wire 7 rotates or rotates exists, and the penetrating cylinder 83 in the anti-drop disc 8 and the silicon nitride ceramic wire 7 belong to interference fit, so that if the silicon nitride ceramic wire 7 rotates, the penetrating cylinder 83 is driven to rotate while rotating, and at the moment, the outer teeth 82 of the penetrating cylinder 83 cannot finish the crossing between the two adjacent inner teeth 81 due to the falling into the inner teeth 81, the rotating force of the silicon nitride ceramic wire 7 is counteracted, and the rotation or rotation of the silicon nitride ceramic wire 7 is prevented.
In one embodiment, the anti-drop mechanism further comprises a limiting cover 9, the inner side of the anti-drop disc 8 is provided with the limiting cover 9, a through hole for the silicon nitride ceramic wire 7 to pass through is formed in the middle of the limiting cover 9, and the through hole is in a mode of decreasing inner diameter along the penetrating direction of the silicon nitride ceramic wire 7. One or more limiting teeth are arranged on the upper side and the lower side of the through hole, the top of a tooth body of each limiting tooth is connected with a connecting rod mechanism, the top of each connecting rod mechanism extends out of the outer side of the corresponding limiting cover 9, a movable sleeve 96 is arranged at the outer end part of each connecting rod mechanism, and the closing and opening operation of each limiting tooth is realized by lifting or pressing the corresponding movable sleeve 96.
On the basis that the anti-drop disc 8 limits the rotation of the silicon nitride ceramic wire 7, the limiting cover 9 is used for preventing the silicon nitride ceramic wire 7 from being separated due to unstable clamping of the clamping mechanism caused by repeated tensioning, the through hole is in an inner diameter decreasing mode along the penetrating direction of the silicon nitride ceramic wire 7, meanwhile, limiting teeth are respectively arranged on the upper side and the lower side of the through hole, as shown in fig. 3, the number of the limiting teeth on the upper side and the lower side of the through hole is two, namely the limiting teeth I91 and the limiting teeth II 92, the limiting teeth I91 are arranged close to the anti-drop disc 8, the limiting teeth II 92 are arranged close to the inlet side of the through hole, the top of the limiting teeth I91 is provided with a connecting rod I93, the top of the limiting teeth II 92 is provided with a connecting rod II 94, the end parts of the connecting rod I93 and the connecting rod II 94 are hinged with a connecting rod III 95, the extending end of the connecting rod III 95 is provided with a moving sleeve 96, and an operator needs to directly penetrate the through hole in the process of the silicon nitride ceramic wire 7 to install and fix the silicon nitride ceramic wire 7, then the moving sleeve 96 is pressed down, so that the limiting teeth I91 and the limiting teeth II 92 are in an open state, the limiting teeth I92 and the limiting teeth 92 are arranged on the inlet side, the silicon nitride wire is separated from the ceramic wire 7, and the silicon nitride 7 is prevented from being separated from the ceramic wire 7, and more than an axial extrusion force.
It should be noted that it will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
The principles and embodiments of the present invention have been described in detail with reference to specific examples, which are provided to facilitate understanding of the method and core ideas of the present invention; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (8)
1. Detection device suitable for silicon nitride ceramic material fatigue strength experiments, its characterized in that: comprising
The fixing frame is arranged on the experiment table, and the fixed end of the silicon nitride ceramic wire is clamped in the fixing frame; and
the experiment table is provided with a sliding rail, the sliding rail is assembled on the sliding rail in a sliding way, the moving end of the silicon nitride ceramic wire is clamped in the sliding rail, and the telescopic cylinder is used for driving the sliding rail to reciprocate along the sliding rail; and
the infrared sensor is arranged on the experiment table, and is used for sensing the stretching times of the movable frame and uploading the stretching times to a control module of a computer for recording; and
the clamping mechanisms are arranged in the fixing frame and the moving frame and used for clamping the end parts of the silicon nitride ceramic wires, each clamping mechanism comprises an upper clamping plate and a lower clamping plate, screw rods are respectively arranged on the fixing frame and the moving frame, the back surfaces of the upper clamping plates and the lower clamping plates are assembled at the nut positions on the screw rods through moving blocks, and the screw rods rotate to drive the upper clamping plates and the lower clamping plates to move up and down so as to clamp or loosen the silicon nitride ceramic wires; and
the anti-falling mechanism is arranged on the inner sides of the clamping mechanisms on the fixing frame and the moving frame, the anti-falling mechanism comprises an anti-falling disc, and two ends of the silicon nitride ceramic wire respectively penetrate through the anti-falling mechanism and then are clamped by the clamping mechanisms.
2. The detection device for fatigue strength test of silicon nitride ceramic material according to claim 1, wherein: the fixed frame is fixed at one end of the sliding rail, and the horizontal central lines of the movable frame and the fixed frame are coincided.
3. The detection device for fatigue strength test of silicon nitride ceramic material according to claim 1, wherein: the cylinder seat of the telescopic cylinder is arranged on the experiment table, the tail end of the telescopic rod of the telescopic cylinder is fixedly provided with a connecting rod, and the tail end of the connecting rod is connected with the movable frame; and the movable frame is driven to reciprocate along the sliding rail through the telescopic motion of the telescopic cylinder.
4. The detection device for fatigue strength test of silicon nitride ceramic material according to claim 1, wherein: the upper clamping plate comprises an upper clamping plate I and an upper clamping plate II, the lower clamping plate comprises a lower clamping plate I and a lower clamping plate II, the upper clamping plate I and the lower clamping plate I are arranged on the movable frame in an up-down corresponding mode, a screw rod on the movable frame is divided into an upper section and a lower section, the upper clamping plate I is assembled on the upper section of the screw rod I through a nut, the lower clamping plate I is assembled on the lower section of the screw rod I through a nut, and the tensioning end part of the silicon nitride ceramic wire is clamped between the upper clamping plate I and the lower clamping plate I.
5. The detection device for fatigue strength test of silicon nitride ceramic material according to claim 4, wherein: the upper clamping plate II and the lower clamping plate II are arranged on the fixing frame in an up-down corresponding mode, the screw rod II on the fixing frame is divided into an upper section and a lower section, the upper clamping plate II is assembled on the upper section of the screw rod II through a nut, the lower clamping plate II is assembled on the lower section of the screw rod II through a nut, and the fixed end part of the silicon nitride ceramic wire is clamped between the upper clamping plate II and the lower clamping plate II.
6. The detection device for fatigue strength test of silicon nitride ceramic material according to claim 1, wherein: the anti-drop disc is discoid, a plurality of curved internal teeth are evenly distributed on the inner wall of the anti-drop disc, a penetrating cylinder is arranged in the inner cavity of the anti-drop disc, the silicon nitride ceramic wire is penetrated in the penetrating cylinder, a plurality of external teeth are evenly distributed on the outer wall surface of the penetrating cylinder, and the external teeth are correspondingly inserted into the internal teeth.
7. The detection device for fatigue strength test of silicon nitride ceramic material according to claim 1, wherein: the anti-drop mechanism further comprises a limiting cover, the limiting cover is arranged on the inner side of the anti-drop disc, a through hole used for the silicon nitride ceramic wire to pass through is formed in the middle of the limiting cover, and the through hole is in a mode that the inner diameter of the through hole decreases progressively along the penetrating direction of the silicon nitride ceramic wire.
8. The detection apparatus for fatigue strength test of silicon nitride ceramic material according to claim 7, wherein: the upper side and the lower side of the via hole are respectively provided with one or more limiting teeth, the top of a tooth body of each limiting tooth is connected with a connecting rod mechanism, the top of each connecting rod mechanism extends out of the outer side of each limiting cover, the outer end part of each connecting rod mechanism is provided with a movable sleeve, and the closing and opening operation of each limiting tooth is realized by lifting or pressing the movable sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202311030654.4A CN117054268B (en) | 2023-08-16 | 2023-08-16 | Detection device suitable for silicon nitride ceramic material fatigue strength experiment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311030654.4A CN117054268B (en) | 2023-08-16 | 2023-08-16 | Detection device suitable for silicon nitride ceramic material fatigue strength experiment |
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| CN117054268A true CN117054268A (en) | 2023-11-14 |
| CN117054268B CN117054268B (en) | 2025-10-17 |
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| CN216449365U (en) * | 2021-11-29 | 2022-05-06 | 佛山市洪平瑞精密机械有限公司 | Metal material fatigue strength check out test set |
| CN217688254U (en) * | 2022-07-19 | 2022-10-28 | 沈阳建筑大学 | A clamping device suitable for fatigue strength experiment of silicon nitride ceramic materials |
| CN217783589U (en) * | 2022-08-23 | 2022-11-11 | 泉州市亿佳汽车配件有限公司 | Camshaft with middle section thread wall |
| CN218970802U (en) * | 2022-12-14 | 2023-05-05 | 重庆锦川电力设施有限公司 | Special high-strength prestressed concrete pole |
| CN219456343U (en) * | 2022-12-23 | 2023-08-01 | 东莞依美电感元件有限公司 | Inductance detection device |
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| CN202896571U (en) * | 2012-09-25 | 2013-04-24 | 刘银龙 | Rope dropping prevention device of overhead man-riding device |
| CN205281350U (en) * | 2016-01-08 | 2016-06-01 | 刘冰洁 | On -vehicle wireless computer terminal of intelligence acoustic control |
| CN106889909A (en) * | 2017-03-29 | 2017-06-27 | 侯淑璐 | A kind of pepper grinder |
| CN107630938A (en) * | 2017-10-25 | 2018-01-26 | 天津港第四港埠有限公司 | A kind of transmission mechanism of new gear anticreep |
| CN207740310U (en) * | 2017-12-27 | 2018-08-17 | 赛克思液压科技股份有限公司 | A kind of splined shaft connection disconnecting prevention structure |
| KR20200066809A (en) * | 2018-12-03 | 2020-06-11 | 한국생산기술연구원 | Tensile and fatigue test jig for high strength cermet specimen |
| CN216449365U (en) * | 2021-11-29 | 2022-05-06 | 佛山市洪平瑞精密机械有限公司 | Metal material fatigue strength check out test set |
| CN217688254U (en) * | 2022-07-19 | 2022-10-28 | 沈阳建筑大学 | A clamping device suitable for fatigue strength experiment of silicon nitride ceramic materials |
| CN217783589U (en) * | 2022-08-23 | 2022-11-11 | 泉州市亿佳汽车配件有限公司 | Camshaft with middle section thread wall |
| CN218970802U (en) * | 2022-12-14 | 2023-05-05 | 重庆锦川电力设施有限公司 | Special high-strength prestressed concrete pole |
| CN219456343U (en) * | 2022-12-23 | 2023-08-01 | 东莞依美电感元件有限公司 | Inductance detection device |
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