Variable impact clamp
By designing a variable impact clamp, the problem of high cost and low efficiency caused by individual clamp design in impact testing of composite components was solved. It achieved efficient clamping of components of different shapes and sizes, improving testing efficiency and reducing costs.
Patent Information
- Application Number
- CN202422709732.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-07
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-11-07
AI Technical Summary
In the existing technology, impact testing of composite material components requires the design of separate fixtures, resulting in high testing costs and low efficiency.
Design a variable impact clamp, including a support assembly, a clamping assembly and a lifting assembly, which can adapt to the clamping of composite material components of different shapes and sizes by adjusting the included angle between the main plates and the limiting mechanism.
It improves the efficiency of impact testing and reduces testing costs, has wide applicability, and features a simple and reliable structure.
Smart Images
Figure CN223597364U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the impact test fixture technical field of composite material, specifically a variable impact fixture. BACKGROUND
[0002] Compared with traditional materials such as metal and ceramic, composite materials have many advantages such as high specific strength, high specific stiffness, strong designability and good fatigue resistance, and are widely used in the fields of aerospace, building, transportation and the like. With the gradual widening and deepening of the application field of composite materials, the service safety problem thereof is increasingly valued. During use, composite components are inevitably often impacted by various foreign objects, for example, tools falling, stones, impacts and daily bumps and the like. Such impacts can cause matrix cracking and other intralaminar and interlaminar damages in the composite material, thereby causing the mechanical properties of the composite component to decrease, and seriously affecting the service safety thereof, so the impact performance of the composite component is widely valued and researched.
[0003] For a composite component, before impact testing, the shape thereof often needs to be separately designed with a fixture, which leads to high cost and low efficiency of impact test testing, so a variable impact fixture with simple structure and convenient use and capable of adapting to composite components of different shapes and sizes is urgently needed. SUMMARY
[0004] The utility model discloses at least solve one of the prior art technical problems. Therefore, the utility model provides a variable impact fixture, solve the need to be designed with a fixture for a composite component separately, leading to high cost and low efficiency of impact test testing.
[0005] According to the variable impact fixture of the utility model embodiment first aspect, comprising:
[0006] The support assembly comprises a main plate and a rotating shaft.
[0007] The clamping assembly comprises a main plate and a rotating shaft, and the main plate is provided with two main plates.
[0008] The lifting assembly is provided with a lifting driving end in transmission connection with the rotating shaft, and the lifting assembly is configured to drive the rotating shaft to move along the angle bisector between the two main plates to change the included angle between the two main plates.
[0009] The variable impact fixture according to the utility model embodiment has at least the following beneficial effects:
[0010] According to the composite material component to be tested in different sizes and shapes, the rotation shaft is driven to move by the lifting assembly, the included angle between the two main plates is changed, the opening angle of the clamping groove is changed, the size of the composite material component is met, the composite material component is placed in the clamping groove, then the position of the limiting assembly is adjusted, the composite material component is positioned in the clamping groove by the two limiting assemblies, the bidirectional clamping of the composite material component is completed, the composite material components in different sizes and structures are clamped by changing the included angle between the two main plates and the position of the limiting assembly, and the method has the advantages of high applicability, wide application scene, simple and reliable structure, and can effectively improve the impact test efficiency and reduce the test cost.
[0011] According to some embodiments of the utility model, the limiting mechanism includes a limiting baffle, the limiting baffle extends along the axial direction of the rotation shaft, and the limiting baffle is vertically arranged with the main plate.
[0012] According to some embodiments of the utility model, the limiting mechanism further includes two mounting clamps, the two mounting clamps are respectively arranged at the two ends of the limiting baffle along the axial direction of the rotation shaft, and the two mounting clamps are respectively clamped on the two side edges of the main plate.
[0013] According to some embodiments of the utility model, the supporting assembly includes a plurality of supporting columns, a plurality of supporting columns arranged along the axial direction of the rotation shaft are arranged below the side of the main plate away from the clamping groove, and the upper end of the supporting column is rotatably and slidably connected with the main plate.
[0014] According to some embodiments of the utility model, the main plate is provided with a plurality of groove sliding rails, and the groove sliding rails are rotatably and slidably matched with the upper end of the supporting column.
[0015] According to some embodiments of the utility model, the supporting assembly is further provided with a bottom plate, and the supporting column and the lifting assembly are mounted on the bottom plate.
[0016] According to some embodiments of the utility model, the supporting assembly includes a plurality of supporting columns, a plurality of supporting columns arranged along the axial direction of the rotation shaft are arranged below the side of the main plate away from the clamping groove, the upper end of the supporting column is slidably connected with the main plate, the bottom plate is provided with a plurality of guide rails perpendicular to the axial direction of the rotation shaft, and the lower end of the supporting column is slidably arranged along the guide rail direction.
[0017] According to some embodiments of the utility model, the lifting driving end is provided with a buffer layer, the lifting driving end abuts against the bottom of the rotation shaft through the buffer layer, and the buffer layer is a ring-shaped soft member.
[0018] According to some embodiments of the utility model, the rotation shaft and the guide rail are both subjected to rust prevention and lubrication treatment.
[0019] According to some embodiments of the utility model, the rotation shaft is provided with a protractor, and the protractor is used for measuring the included angle between the two main plates.
[0020] Other features and advantages of the present application will be set forth in the following description of the application, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. The objects and advantages of the application can be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims. BRIEF DESCRIPTION OF DRAWINGS
[0021] The present application will be further described by examples in conjunction with the accompanying drawings, in which:
[0022] Figure 1 A front view of an embodiment of the variable impact clamp provided by the present application;
[0023] Figure 2 A top view of an embodiment of the variable impact clamp provided by the present application;
[0024] Figure 3 A clamping schematic view of an embodiment of the variable impact clamp provided by the present application when clamping a composite material member in a plate structure;
[0025] Figure 4 A clamping schematic view of an embodiment of the variable impact clamp provided by the present application when clamping a composite material member in an L-shaped structure;
[0026] Figure 5 A clamping schematic view of an embodiment of the variable impact clamp provided by the present application when clamping a composite material member in a gas cylinder or pipeline structure;
[0027] LIST OF ELEMENTS
[0028] Clamping assembly 100; main plate 110; clamping groove 111; rotating shaft 120; protractor 121; limiting mechanism 130; limiting baffle 131; mounting clamp 132; fixing screw 133;
[0029] Lifting assembly 200; lifting column 210; buffer layer 220;
[0030] Support assembly 300; support column 310; bottom plate 320; guide rail 321;
[0031] Composite material member 400. DETAILED DESCRIPTION
[0032] Embodiments of the present application are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used to explain the present application, and cannot be understood as limiting the present application.
[0033] In the description of the utility model, it needs to be understood that, when the direction description, such as the direction or position relation indicated by up, down etc. is based on the direction or position relation shown in the drawing, it is only for the convenience of describing the utility model and simplifying the description, and it is not indicated or implied that the device or element indicated must have a particular direction, a particular direction structure and operation, therefore it can not be understood as the limitation of the utility model.
[0034] In the description of the utility model, more refers to two or more. If the first, second is described for the purpose of distinguishing technical features, it can not be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the sequence of indicated technical features.
[0035] In the description of the utility model, unless otherwise explicitly limited, the words such as setting, installation, connection etc. should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.
[0036] The technical scheme of the utility model will be described clearly and completely in combination with the drawings, obviously, the following described embodiments are part of the embodiments of the utility model, not all embodiments.
[0037] Compared with traditional materials such as metal and ceramic, composite materials have many advantages such as high specific strength, high specific stiffness, strong designability, good fatigue resistance and are widely used in aerospace, building, transportation and other fields. With the gradual widening and deepening of the application field of composite materials, its service safety problem is increasingly valued. In the use process of composite materials, it is inevitable to be often impacted by various foreign objects, such as tool falling, stone, impact and daily knock, etc. Such impact may cause matrix cracking and other interlaminar and interlaminar damage in the internal composite material, thereby causing the mechanical properties of the composite material to decrease, seriously affecting its service safety, so the impact performance of the composite material is widely valued and researched.
[0038] For the composite material test piece, before impact test, the shape thereof often needs to be designed separately, which leads to high cost and low efficiency of impact test, therefore a simple structure, convenient to use, and capable of adapting to different shape composite material test piece impact test fixture is urgently needed.
[0039] Reference Figure 1 、 Figure 2 The utility model discloses a variable impact clamp makes the following embodiment:
[0040] The utility model discloses a variable impact clamp, which comprises a clamping assembly 100, a lifting assembly 200 and a supporting assembly 300.
[0041] Wherein, the clamping assembly 100 of the embodiment comprises a main plate 110 and a rotating shaft 120, in order to clamp the composite material component 400 horizontally symmetrically, the main plate 110 is provided with two, the two main plates 110 are symmetrically arranged left and right, the two main plates 110 are rotationally connected by the rotating shaft 120 at the end close to each other, the rotating shaft 120 is arranged in front and back extension, the two main plates 110 and the rotating shaft 120 jointly constitute the clamping groove 111 which is arranged at an angle in the cross section of the front view, so that the angle of the clamping groove 111 can be adjusted, the clamping groove 111 plays a supporting role to the composite material component 400, by rotating the two main plates 110 around the rotating shaft 120, the angle between the two main plates 110 can be changed, so that the opening angle of the clamping groove 111 is changed, at the same time, the rotating shaft 120 is arranged horizontally to realize the requirement of placing the composite material component 400 horizontally symmetrically with different shapes and sizes.
[0042] One end of the rotating shaft 120 of the embodiment is also provided with a protractor 121, the protractor 121 is used for measuring the angle between the two main plates 110, so that the two main plates 110 can be conveniently adjusted to the corresponding angle of placing different composite material components 400, the impact test efficiency is improved, in other embodiments, the protractor 121 can be separately arranged, the protractor 121 is integrated with the rotating shaft 120 in the embodiment, which is more convenient and efficient when used.
[0043] Further, in order to prevent the position of the composite material component 400 from deviating during the impact test, affecting the impact test result, the two main plates 110 are respectively provided with a limiting mechanism 130, the two limiting mechanisms 130 are respectively installed on the two main plates 110, the limiting mechanism 130 can be adjusted along the direction away from and close to the rotating shaft 120, it can be understood that the limiting mechanism 130 is slidably installed on the top surface of the two main plates 110.
[0044] After placing the composite material component 400 to be impacted on the clamping groove 111, the two limiting mechanisms 130 are close to the rotating shaft 120 until contacting the composite material component 400, so as to realize further limiting and fixing of the composite material component 400, so that the composite material component 400 does not jump in the two main plates 110 during the impact test, so that the impact test result is more accurate.
[0045] Wherein, the limiting mechanism 130 of the embodiment comprises a limiting baffle 131 and a mounting clamp 132, the limiting baffle 131 is a long strip plate structure, extending along the axis of the rotating shaft 120, Figure 2As shown, the limiting baffle 131 extends in the front-rear direction, so that the limiting baffle 131 is in line contact or surface contact with the composite material member 400 to be tested, increases the contact area, so that the force distribution is uniform, improves the clamping stability, the limiting baffle 131 is perpendicular to the main plate 110, the limiting baffle 131 and the main plate 110 exert two forces perpendicular to each other on the composite material member 400, so that the composite material member 400 cannot move in the vertical direction, and since the two main plates 110 are horizontally symmetrical, the two limiting baffles 131 are horizontally symmetrical, so that the composite material member 400 cannot move in the horizontal direction, thereby completing the clamping and fixing of the composite material member 400. In other embodiments, other structures and methods can be used for limiting, such as clamps, mounting holes, etc.
[0046] The mounting clip 132 of the embodiment is arranged at the front and rear ends of the limiting baffle 131 respectively, and the mounting clip 132 is provided with a clamping opening that can cooperate with the main plate 110, so that the mounting clip 132 is movably clamped on the main plate 110 and is arranged to slide in the direction of approaching and moving away from the rotating shaft 120. The clamping opening of the mounting clip 132 is provided with a fixing screw 133, and the mounting clip 132 is fixed and locked by the fixing screw 133 after being moved to the appropriate position on the main plate 110. The limiting baffle 131 is arranged on the side of the mounting clip 132 close to the clamping groove 111, so that the position of the mounting clip 132 on the main plate 110 is movable, thereby adapting to different sizes and shapes of the composite material member 400 to be tested.
[0047] For the use of the mounting clip 132 and the limiting baffle 131: according to the size and shape of the composite material member 400 to be tested, the mounting clip 132 and the limiting baffle 131 are selected and matched, for example, for flat and cylindrical samples, only the mounting clip 132 can be used for fixing, and for L-shaped plates, the mounting clip 132 and the limiting baffle 131 may be needed to cooperate, by adjusting the angle between the two main plates 110 and the position of the mounting clip 132 and the limiting baffle 131 to achieve the purpose of stably fixing the test sample.
[0048] The lifting assembly 200 of the embodiment is used to drive the rotating shaft 120 to move up and down, so as to realize automatic adjustment of the included angle between the two main plates 110. Specifically, the lifting assembly 200 of the embodiment includes a lifting column 210, which is located below the rotating shaft 120. The axial direction of the lifting column 210 extends upward and downward. The lower end of the lifting column 210 is a fixed end, and the upper end of the lifting column 210 is a lifting driving end. The lifting driving mechanism is arranged at the lifting driving end and is in driving connection with the lower side of the rotating shaft 120. In other embodiments, the lifting assembly 200 can be arranged in other directions, and can also be arranged in other structures, such as lifting by cantilever, etc. The lifting assembly 200 is configured to drive the rotating shaft 120 to move up and down, so as to change the included angle between the two main plates 110, so as to adapt to composite members 400 of different shapes and sizes. The lifting driving mechanism arranged on the lifting column 210 can adopt a linear driving structure such as a pneumatic cylinder or an electric push, or can realize the lifting of the lifting driving end through a spiral structure or a sliding rod structure.
[0049] Further, in order to reduce the wear of the rotating shaft 120, which is a fine and critical component, in the impact test, a buffer layer 220 is arranged on the contact surface between the lifting column 210 and the rotating shaft 120. The buffer layer 220 is a ring-shaped soft member, which is attached to the outer edge shape of the lifting column 210, so as to facilitate installation. The buffer layer 220 can adopt a high-modulus rubber ring to improve the friction force. On the premise of ensuring the stability of the impact, the hard contact between the rotating shaft 120 and the lifting column 210 is avoided to cause damage. The buffer layer 220 is a consumable part, which should be connected through a quick release structure. At the same time, the rotating shaft 120 is subjected to rust-proof and lubrication treatment to improve the service life of the component.
[0050] Further, the variable impact clamp provided by the embodiment further comprises a supporting assembly 300. The supporting assembly 300 includes a plurality of supporting columns 310 and a bottom plate 320. The bottom plate 320 is located below the clamping assembly 100. The axial direction of the supporting column 310 extends vertically. One end of the supporting column 310 is connected to one side of the two main plates 110 away from the clamping groove 111, and the other end is connected to the bottom plate 320 perpendicularly. The supporting assembly 300 has a lifting support effect on the clamping assembly 100, and makes the two main plates 110 horizontally symmetrically arranged, so as to facilitate the horizontal placement of the composite member 400 to be tested. Further, in order to ensure good support effect, the supporting columns 310 are arranged in parallel to the axial direction of the rotating shaft 120.
[0051] Wherein, the main plate 110 of the embodiment is provided with a plurality of recessed slide rails on the side opposite to the clamping groove 111, the recessed slide rails extend along the direction perpendicular to the axial direction of the rotating shaft 120, the upper end of the supporting column 310 is provided with a slide block matched with the recessed slide rail, so that the supporting column 310 is slidably connected with the main plate 110 in a relative rotating manner, thereby realizing that the main plate 110 can be flexibly rotated in a larger range under the support of the supporting column 310, and the relative rotation between the two main plates 110 is not limited by the supporting column 310.
[0052] In other embodiments, in order to integrate the plurality of supporting columns 310 and make the variable impact clamp structure of the embodiment simple and integrated, the lower end of the supporting column 310 is connected to the bottom plate 320, the bottom plate 320 is horizontally arranged, and at the same time, the upper surface of the bottom plate 320 is provided with a guide rail 321 perpendicular to the axial direction of the rotating shaft 120, and the lower end of the supporting column 310 is installed on the guide rail 321, so that the supporting column 310 can always keep vertical during the translation process, thereby more stably supporting the main plate 110. Moreover, since the supporting rod can be adjusted by sliding, the supporting rod can be moved by adjusting the lifting assembly 200, thereby changing the included angle between the main plates 110, which is simple and convenient to operate and can be adjusted by one hand, greatly improving the test efficiency. In other embodiments, the movable arrangement of the supporting column 310 can be realized by other structures, such as the hinge connection of the rotating shaft 120, as long as it can move to match the change of the included angle of the main plate 110 and support the main plate 110 without limiting the rotation of the main plate 110.
[0053] Further, in order to ensure the smooth movement of the main plate 110 and the supporting column 310, the above-mentioned recessed slide rail and guide rail 321 need to be treated with anti-rust and lubrication to achieve good use effect and prolong service life.
[0054] The use mode of the variable impact clamp provided in the embodiment is as follows:
[0055] Reference Figure 3 In use case 1, the composite material component 400 to be tested is in a plate structure, the size of the composite material component 400 to be tested is measured first, after obtaining the specific structure size result of the composite material component 400 to be tested, the height of the lifting column 210 is adjusted, so that the clamping groove 111 formed between the two main plates 110 meets the requirement that the composite material component 400 is placed horizontally and symmetrically, and in this use case, the clamping groove 111 formed between the two main plates 110 has a cross section with an included angle of 90°. After placing the composite material component 400 according to the requirement, the limiting baffle 131 forms a line contact with the composite material component 400, the mounting clamp 132 is locked and fixed tightly outside the limiting baffle 131, and the clamping of the composite material component 400 is completed.
[0056] Reference Figure 4, using case 2, the composite material component 400 to be measured is an L-shaped plate structure, first, the size and angle of the composite material component 400 are measured, after obtaining the specific structure size result of the composite material component 400, the angle between the two main plates 110 is read out by the protractor 121, the height of the lifting column 210 is adjusted until the angle displayed by the protractor 121 is complementary to the angle of the composite material component 400 to be measured, the two ends of the composite material component 400 are perpendicular to the main plates 110, then the composite material component 400 is placed horizontally and symmetrically in the clamping groove 111 formed by the two main plates 110, then the limiting baffle 131 forms a linear contact with the composite material component 400, and the mounting clamp 132 is locked and fixed on the side of the main plate 110 outside the limiting baffle 131, thereby completing the clamping of the composite material component 400.
[0057] Reference Figure 5 , using case 3, the composite material component 400 to be measured is a gas cylinder or pipeline structure, first, the size of the composite material component 400 to be measured is measured, after obtaining the specific structure size result of the composite material component 400 to be measured, the height of the lifting column 210 is adjusted, so that the clamping groove 111 formed between the two main plates 110 can meet the requirement that the composite material component 400 to be measured is placed horizontally and symmetrically. After placing the composite material component 400 to be measured as required, the limiting baffle 131 forms a linear contact with the composite material component 400, and the mounting clamp 132 is locked and fixed on the two sides of the main plate 110 outside the limiting baffle 131, thereby completing the clamping of the composite material component 400 to be measured.
[0058] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner without departing from the purpose of the present application.
[0059] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the purpose of the present application.
Claims
1. A variable impact clamp, characterized by, Impact test for composite material components, comprising: a support assembly; a clamping assembly comprising two main plates, one end of each main plate being pivotally connected by a pivot shaft to form a clamping slot between the two main plates, the other end of each main plate being movably connected to the support assembly, each main plate being provided with a limiting mechanism located in the clamping slot, the limiting mechanism being adjustable in a direction away from or towards the pivot shaft; a lifting assembly provided with a lifting drive end in transmission connection with the pivot shaft, the lifting assembly being configured to drive the pivot shaft to move along the angle bisector between the two main plates to change the included angle between the two main plates.
2. The variable impact clamp of claim 1, wherein: the limiting mechanism comprises a limiting baffle extending along the axial direction of the pivot shaft, and the limiting baffle is arranged perpendicularly to the main plate.
3. The variable impact clamp of claim 2, wherein: the limiting mechanism further comprises two mounting clamps, each mounting clamp being arranged at one end of the limiting baffle along the axial direction of the pivot shaft, and each mounting clamp clamping a side edge of the main plate.
4. The variable impact clamp of claim 1, wherein: the support assembly comprises a plurality of support columns, and the side of each main plate away from the clamping slot is provided with a plurality of support columns arranged along the axial direction of the pivot shaft, and the upper end of each support column is rotatably and slidably connected to the main plate.
5. The variable impact clamp of claim 4, wherein: each main plate is provided with a plurality of groove sliding rails, and each groove sliding rail is rotatably and slidably connected to the upper end of each support column.
6. The variable impact clamp of claim 4, wherein: the support assembly further comprises a base plate, and the support columns and the lifting assembly are mounted on the base plate.
7. The variable impact clamp of claim 6, wherein: the support assembly comprises a plurality of support columns, and the side of each main plate away from the clamping slot is provided with a plurality of support columns arranged along the axial direction of the pivot shaft, and the upper end of each support column is slidably connected to the main plate, and the base plate is provided with a plurality of guide rails perpendicular to the axial direction of the pivot shaft, and the lower end of each support column is slidably arranged along the guide rail.
8. The variable impact clamp of claim 1, wherein: the lifting drive end is provided with a buffer layer, and the lifting drive end abuts the bottom of the pivot shaft through the buffer layer, and the buffer layer is a ring-shaped soft member.
9. The variable impact clamp of claim 7, wherein: the pivot shaft and the guide rail are both subjected to anti-rust and lubrication treatment.
10. The variable impact clamp of claim 1, wherein: the pivot shaft is provided with a protractor, and the protractor is used to measure the included angle between the two main plates.