Pull tab performance detection tooling and system

Abstract

The application provides a kind of pull tab performance detection tool, including first component and second component.First component is used to fix pull tab and simulate pull tab fixed in concrete, first component includes main body and fastener, main body is equipped with the fixed cavity for fixing pull tab, fixed cavity is along the opposite sides of main body through first direction, first direction is the length direction of pull tab, when pull tab is equipped in fixed cavity, the both ends of pull tab along first direction can extend to outside main body, fixed cavity is equipped with stop face, fastener is equipped in main body, fastener can be moved relative to main body, and can be together with stop face in the width direction and / or thickness direction of pull tab Clamping pull tab.Second component is the tool for simulating breaking pull tab, second component includes pressure arm.Pressure arm can be moved relative to main body along second direction to press the part of pull tab extending from main body, and second direction is the width direction of pull tab.The application has simple structure, good simulation effect and convenient detection.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building formwork, in particular to a pull tab performance detection tool and system. BACKGROUND

[0002] One of the fixing methods of building aluminum alloy formwork (referred to as aluminum formwork) is the pull tab system. The pull tab system mills a groove on the edge rib of the aluminum formwork, installs a pin at the aluminum formwork joint position, and connects the two side formworks. After the concrete solidifies, the aluminum formwork on the wall body is removed, and the pull tab is left in the concrete, with both ends protruding out of the wall surface. After all the aluminum formwork is removed, the protruding part of the pull tab is broken. The pull tab is a key auxiliary material in the aluminum formwork system. For example, a 30-story commercial residential building with an area of 2000 square meters uses more than 100,000 pull tabs.

[0003] The pull tab has a stress-concentrated V-shaped structure. The V-shaped structure is opened inward from the thickness side of the pull tab along the width direction of the pull tab, which helps to break the protruding part of the pull tab left outside the wall more labor-saving and efficiently. The detection of the breaking performance of the protruding part of the pull tab will help to design a pull tab structure that can be broken more labor-saving and efficiently. However, there is still a lack of effective detection method for the breaking performance of the protruding part of the pull tab. SUMMARY

[0004] The present application provides a pull tab performance detection tool and system to solve the problem of being unable to effectively detect the breaking performance of the protruding part of the pull tab.

[0005] The present application provides a pull tab performance detection tool, which comprises a first component and a second component. The first component is used to fix the pull tab and simulate the fixing of the pull tab to the concrete. The first component comprises a main body and a fastener. The main body is provided with a fixing cavity for fixing the pull tab. The fixing cavity penetrates through the opposite sides of the main body along a first direction. The first direction is the length direction of the pull tab. When the pull tab is arranged in the fixing cavity, the two ends of the pull tab along the first direction can protrude out of the main body. The fixing cavity is provided with a stop surface. The fastener is arranged on the main body. The fastener can move relative to the main body and can clamp the pull tab together with the stop surface in the width direction and / or the thickness direction of the pull tab. The second component is a tool for simulating the breaking of the pull tab. The second component comprises a pressure arm. The pressure arm can move relative to the main body along a second direction to press against the part of the pull tab protruding out of the main body. The second direction is the width direction of the pull tab.

[0006] The aforementioned fixture can be used to test the breaking performance of the pull tab. The pull tab is fixed to the first component to simulate the situation where the pull tab is fixed to the wall by concrete during aluminum formwork demolding. A second component simulates the demolding tools used during aluminum formwork demolding. Moving the second component relative to the first component can break both ends of the pull tab fixed to the first component. Measuring and analyzing the pressure between the first and second components during this process allows for the testing of the pull tab's breaking performance. Specifically, the pull tab is positioned within the fixing cavity along the first direction, and both ends of the pull tab can extend out of the fixing cavity in the first direction, equivalent to the pull tab extending out of the concrete when fixed in concrete. Then, fasteners and a stop surface cooperate to clamp the pull tab perpendicular to the first direction, that is, clamping the pull tab in the width and / or thickness direction, equivalent to the pull tab being fixed by concrete and unable to move. However, the pull tab can be fixed or released by moving the fasteners. Finally, a pressure arm moves along the second direction and can move to one side of the fixing cavity, allowing the pressure arm to break both ends of the pull tab. The fixture has a simple structure and good simulation effect. By cooperating with the first and second components, it can effectively simulate the situation of breaking both ends of the tie plate fixed in the concrete. The fixture is easy to test. By converting the stress test of the tie plate in this process into the stress test between the first and second components, the stress condition when the tie plate is broken can be detected.

[0007] In some embodiments of this application, the main body is provided with a through hole connecting the fixing cavity and the outside of the main body, and the fastener is threadedly connected to the through hole.

[0008] In the above embodiments, by moving the fastener through the through hole toward the stop surface, it is convenient to control the fastener from the outside. Furthermore, the fastener and the through hole are threaded together, which allows for convenient and quick control of the fastener's movement and ensures the stability of the fastener pressing the pull tab.

[0009] In some embodiments of this application, one end of the fastener is provided with a pad, which is used to abut against the pull tab and to clamp the pull tab between the pad and the stop surface when the fastener moves.

[0010] In the above embodiments, the pull tab is pressed and fixed by the pad, making the force application surface flatter, which can increase friction and improve the pressing effect of the fastener on the pull tab.

[0011] In some embodiments of this application, the fasteners are provided in multiple forms, and the multiple fasteners are distributed at intervals along the first direction.

[0012] In the above embodiment, the first direction is used to simulate the setting direction of the pull tab in the concrete, and the plurality of fasteners are arranged along the first direction, so that the pull tab is uniformly stressed in the length direction, the situation that the pull tab is fixed in the concrete everywhere is simulated, and the situation that the first assembly simulates the pull tab fixed in the concrete is closer to the actual situation.

[0013] In some embodiments of the present application, the stop surface includes a first stop surface and a second stop surface, and the fastener includes a first fastener and a second fastener, the first fastener can clamp the pull tab between one end of the first fastener and the first stop surface along the thickness direction of the pull tab, and the second fastener can clamp the pull tab between one end of the second fastener and the second stop surface along the second direction.

[0014] In the above embodiment, the first stop surface and the second stop surface are arranged, and the first fastener and the second fastener are arranged respectively to press the pull tab, so that the pull tab can be pressed in the width direction and the thickness direction at the same time, the pressing force on the pull tab is increased, the situation that the pull tab is fixed in the concrete and is stressed on four sides is simulated more realistically, and the stress situation of the pull tab in different directions is adjusted conveniently.

[0015] In some embodiments of the present application, the fixing cavity includes a first fixing cavity and a second fixing cavity, the first fixing cavity and the second fixing cavity are distributed along the second direction, the first fixing cavity and the second fixing cavity are communicated through a communication port extending along the first direction, the first stop surface and the second stop surface are formed in the first fixing cavity, and one end of the first fastener moves into the first fixing cavity and one end of the second fastener moves into the second fixing cavity.

[0016] In the above embodiment, considering that the pull tab is usually in a sheet structure and the thickness direction is relatively narrow when the pull tab is fixed in the fixing cavity, the thickness side of the pull tab is extended from the first fixing cavity to the second fixing cavity and pressed by the second fastener, so that the second fastener is not limited by the main structure and can press the pull tab sufficiently.

[0017] In some embodiments of the present application, one end of the pressure arm forms a pressure head along the second direction, and the diameter of the pressure head gradually decreases along the second direction.

[0018] In the above embodiment, the pressure head with gradually reduced end size is arranged, so that when the second assembly moves relative to the first assembly to simulate the breaking of the pull tab, the pressure of the second assembly on the pull tab is more concentrated, and the simulation effect is better.

[0019] In some embodiments of the present application, a groove is arranged on the outer surface of one end of the pressure arm along the second direction, and the groove wall section is arc-shaped.

[0020] In the above embodiment, the pressure arm can press on the pull tab through the groove of the arc surface, so as to facilitate the pressure arm to tightly hold the pull tab, prevent the pull tab from sliding, and improve the accuracy of the detection result.

[0021] In some embodiments of the present application, the second assembly further comprises a connecting arm, the pressure arm comprises a first pressure arm and a second pressure arm, and the connecting arm connects the first pressure arm and the second pressure arm, and the first pressure arm and the second pressure arm are capable of moving relative to the main body in the second direction to simultaneously press against both ends of the pull tab extending out of the main body.

[0022] In the above embodiment, by arranging the first pressure arm and the second pressure arm connected to each other, the two ends of the pull tab can be broken at the same time, the stress conditions of the two ends of the pull tab are balanced, the pull tab is prevented from moving, and the accuracy of the detection result is improved.

[0023] The present application provides a pull tab performance detection system, which comprises a tensile testing machine and the pull tab performance detection tool in any of the above embodiments. The tensile testing machine comprises a first chuck, a second chuck, a tensile slide rail, and a control analysis module. The tensile slide rail extends in a straight line, the first chuck and the second chuck are slidably arranged on the tensile slide rail and are oppositely arranged, and the control analysis module controls the movement of the first chuck and the second chuck and collects and analyzes the pressure value between the first chuck and the second chuck. The first assembly is detachably connected to the first chuck, and the second assembly is detachably connected to the second chuck. The first assembly and the second assembly move relative to each other in the second direction under the driving of the first chuck and the second chuck, respectively.

[0024] The system described above cooperates the pull tab performance detection tool described above with the tensile testing machine, can simulate the breaking of the pull tab, accurately determine the quantitative force value of the breaking performance of the pull tab, quickly obtain the detection result, and thus determine whether the design scheme of the pull tab meets the actual use requirements, and can also guide and correct the design of the pull tab. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0026] Figure 1 The structure schematic view of the pull tab provided on the pull tab performance detection tool in an embodiment of the present application;

[0027] Figure 2 The front view schematic view of the first assembly in an embodiment of the present application;

[0028] Figure 3 This is a side view of the first component according to an embodiment of this application;

[0029] Figure 4 This is a front view schematic diagram of the second component according to an embodiment of this application;

[0030] Figure 5 This is a side view of the second component according to an embodiment of this application;

[0031] Figure 6 This is a schematic diagram of the structure of a sheet pulling performance testing fixture according to an embodiment of this application;

[0032] Figure 7 This is a schematic diagram of the force-displacement curve of a sheet pulling performance test according to an embodiment of this application.

[0033] The symbols for the main components are explained below.

[0034] 100 film pulls.

[0035] 101 tooling.

[0036] 1. First component.

[0037] 11. Main body.

[0038] 111 Fixed cavity.

[0039] 111a First fixed cavity.

[0040] 111b Second fixed cavity.

[0041] 1110 Connector.

[0042] 112 Stop surface.

[0043] 112a First stop surface.

[0044] 112b Second stop surface.

[0045] 113 Through Hole.

[0046] 12 Fasteners.

[0047] 12a First fastener.

[0048] 12b Second fastener.

[0049] 13. Pads.

[0050] 2. Second component.

[0051] 21. Pressure arm.

[0052] 21a First pressure arm.

[0053] 21b second pressure arm.

[0054] 211 pressure head.

[0055] 212 recess.

[0056] 22 connecting arm.

[0057] 102 system.

[0058] 3 tensile testing machine.

[0059] 31 first chuck.

[0060] 32 second chuck.

[0061] 33 tensile slide.

[0062] 34 control analysis module.

[0063] A first direction.

[0064] B second direction. DETAILED DESCRIPTION

[0065] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0066] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and do not indicate or imply that the systems or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0067] In addition, the terms "first", "second", "third" and the like are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0068] The term "vertical" is used to describe an ideal state between two components. In a state of actual production or use, there can be an approximate vertical state between two components. For example, in connection with numerical descriptions, vertical can refer to an included angle between two straight lines within a range of 90°±10°, vertical can also refer to a dihedral angle between two planes within a range of 90°±10°, and vertical can also refer to an included angle between a straight line and a plane within a range of 90°±10°. Two components described as "vertical" can not be absolute straight lines or planes, and can be substantially straight lines or planes, as long as the overall extension direction is a straight line or a plane from a macroscopic perspective, the components can be considered as "straight lines" or "planes".

[0069] The term "parallel" is used to describe an ideal state between two components. In a state of actual production or use, there can be an approximate parallel state between two components. For example, in connection with numerical descriptions, parallel can refer to an included angle between two straight lines within a range of 180°±10°, parallel can also refer to a dihedral angle between two planes within a range of 180°±10°, and parallel can also refer to an included angle between a straight line and a plane within a range of 180°±10°. Two components described as "parallel" can not be absolute straight lines or planes, and can be substantially straight lines or planes, as long as the overall extension direction is a straight line or a plane from a macroscopic perspective, the components can be considered as "straight lines" or "planes".

[0070] It should be noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. When an element is referred to as being "positioned on" another element, it can be directly positioned on the other element or intervening elements can also be present.

[0071] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0072] The application provides a pull tab performance detection tool, which comprises a first component and a second component. The first component is used for fixing the pull tab and simulating that the pull tab is fixed to concrete. The first component comprises a main body and a fastener. The main body is provided with a fixing cavity for fixing the pull tab. The fixing cavity penetrates through opposite sides of the main body along a first direction. The first direction is the length direction of the pull tab. When the pull tab is arranged in the fixing cavity, the two ends of the pull tab can extend out of the main body along the first direction. The fixing cavity is provided with a stop surface. The fastener is arranged on the main body. The fastener can move relative to the main body and can clamp the pull tab together with the stop surface in the width direction and / or the thickness direction of the pull tab. The second component is a tool for simulating breaking of the pull tab. The second component comprises a pressure arm. The pressure arm can move relative to the main body along a second direction to press against the part of the pull tab extending out of the main body. The second direction is the width direction of the pull tab.

[0073] The tool can be used for detection of the breaking performance of the pull tab. When the pull tab is fixed on the first component to simulate that the pull tab is fixed to the wall by the concrete during demolding of the aluminum formwork, the second component is used to simulate the demolding tool during demolding of the aluminum formwork. Then, the two ends of the pull tab fixed on the first component can be broken by moving the second component relative to the first component. The breaking performance of the pull tab can be detected by measuring and analyzing the pressure between the first component and the second component during the process. Specifically, the length direction of the pull tab is arranged in the fixing cavity along the first direction, and the two ends of the pull tab can extend out of the fixing cavity in the first direction, which is equivalent to the two ends of the pull tab extending out of the concrete when the pull tab is fixed to the concrete. Then, the pull tab is clamped in the direction perpendicular to the first direction by the fastener and the stop surface, that is, the pull tab is clamped in the width direction and / or the thickness direction of the pull tab, which is equivalent to the situation that the pull tab is fixed by the concrete and cannot move. However, the pull tab can be fixed or released by moving the fastener. Finally, the pressure arm moves along the second direction and can move beside one side of the fixing cavity, so that the two ends of the pull tab can be broken in the width direction of the pull tab by the pressure arm. The tool has simple structure and good simulation effect. By cooperation of the first component and the second component, the situation that the two ends of the pull tab fixed to the concrete are broken can be effectively simulated. The tool is convenient for detection. The stress of the pull tab during breaking is converted into the stress between the first component and the second component, so that the stress condition of the pull tab during breaking can be detected.

[0074] Some embodiments of the application are described in detail. The following embodiments and features in the embodiments can be combined with each other without conflict.

[0075] Reference is made to Figure 1 The embodiment provides a pull tab performance detection tool 101, which comprises a first component 1 and a second component 2. The first component 1 is used for fixing the pull tab 100 and simulating that the pull tab 100 is fixed to concrete. The first component 1 comprises a main body 11 and a fastener 12. The main body 11 is provided with a fixing cavity 111 (such as a groove) for fixing the pull tab 100. The fixing cavity 111 penetrates through opposite sides of the main body 11 along a first direction. The first direction is the length direction of the pull tab 100. When the pull tab 100 is arranged in the fixing cavity 111, the two ends of the pull tab 100 can extend out of the main body 11 along the first direction. The fixing cavity 111 is provided with a stop surface 112. The fastener 12 is arranged on the main body 11. The fastener 12 can move relative to the main body 11 and can clamp the pull tab 100 together with the stop surface 112 in the width direction and / or the thickness direction of the pull tab 100. The second component 2 is a tool for simulating breaking of the pull tab 100. The second component 2 comprises a pressure arm 21. The pressure arm 21 can move relative to the main body 11 along a second direction to press against the part of the pull tab 100 extending out of the main body 11. The second direction is the width direction of the pull tab 100. Figure 3As shown in the figure, the fixing cavity 111 penetrates through opposite sides of the main body 11 along the first direction A, the first direction A is the length direction of the pull tab 100, when the pull tab 100 is arranged in the fixing cavity 111, the two ends of the pull tab 100 along the first direction A can extend out of the main body 11, the fixing cavity 111 forms a stop surface 112 extending along the first direction A (as shown in the figure) Figure 3 As shown in the figure, the fastener 12 is arranged in the main body 11, the fastener 12 can move relative to the main body 11, and can clamp the pull tab 100 together with the stop surface 112 in the width direction and / or the thickness direction of the pull tab 100. The second assembly 2 is a tool for simulating breaking the pull tab 100, and the second assembly 2 includes a pressure arm 21. The pressure arm 21 can move relative to the main body 11 along the second direction B to press against the part of the pull tab 100 extending out of the main body 11, and the second direction B is the width direction of the pull tab 100. In this embodiment, the main body 11 is made of die steel.

[0076] The tool 101 described above can be used to detect the breaking performance of the pull tab 100. When the pull tab 100 is fixed on the first assembly 1 to simulate the situation that the pull tab 100 is fixed to the wall by the concrete when the aluminum formwork is removed, and then the second assembly 2 simulates the demolding tool when the aluminum formwork is removed, and then the second assembly 2 moves relative to the first assembly 1 to break the two ends of the pull tab 100 fixed on the first assembly 1, the pressure between the first assembly 1 and the second assembly 2 during this process can be measured and analyzed to detect the breaking performance of the pull tab 100. Specifically, the pull tab 100 is arranged in the fixing cavity 111 along the first direction A, and the two ends of the pull tab 100 can extend out of the fixing cavity 111 along the first direction A, which is equivalent to the two ends of the pull tab 100 extending out of the concrete when the pull tab 100 is fixed in the concrete. Then, the pull tab 100 is clamped in the direction perpendicular to the first direction A by the cooperation of the fastener 12 and the stop surface 112, which is equivalent to the pull tab 100 being fixed by the concrete and being unable to move, but the pull tab 100 can be fixed or released by moving the fastener 12. Finally, the pressure arm 21 moves along the second direction B intersecting the first direction A and can move beside one side of the fixing cavity 111, so that the two ends of the pull tab 100 can be broken by the pressure arm 21. The tool 101 has simple structure and good simulation effect. Through the cooperation of the first assembly 1 and the second assembly 2, the situation of breaking the two ends of the pull tab 100 fixed in the concrete can be effectively simulated. The tool 101 is convenient to detect, and the stress analysis of the pull tab 100 during breaking is converted into the stress analysis between the first assembly 1 and the second assembly 2, so that the stress condition of the pull tab 100 during breaking can be conveniently detected.

[0077] In the embodiment, the pull tab 100 is a common sheet structure, the length direction, width direction and thickness direction of the pull tab 100 are perpendicular to each other, and the length direction distance of the pull tab 100 is greater than the width direction distance and the thickness direction distance. The two ends of the pull tab 100 along the length direction are connected to the aluminum template, and are broken after the aluminum template is removed.

[0078] Referring to Figure 2 , Figure 3 In some embodiments of the application, the main body 11 is provided with a through hole 113 communicating between the fixing cavity 111 and the outside of the main body 11, and the fastener 12 is threadedly connected with the through hole 113. In the above embodiment, the fastener 12 is moved towards the stop surface 112 by passing through the through hole 113, which facilitates the external control of the fastener 12. The threaded connection between the fastener 12 and the through hole 113 can conveniently and quickly control the movement of the fastener 12 and ensure the stability of the fastener 12 pressing the pull tab 100. Specifically, one end of the fastener 12 extends into the fixing cavity 111 through the through hole 113 to abut against the pull tab 100, and the other end of the fastener 12 extends out of the main body 11 through the through hole 113 to facilitate the operation of the fastener 12. In the embodiment, the fastener 12 is a bolt.

[0079] In other embodiments, the fastener 12 can also be a structure such as a clamp, a clamping plate or the like to press and fix the pull tab 100.

[0080] Referring to Figure 3 In some embodiments of the application, one end of the fastener 12 is provided with a pad 13, which is used to abut against the pull tab 100 and can clamp the pull tab 100 between the pad 13 and the stop surface 112 when the fastener 12 moves. In the above embodiment, the pull tab 100 is pressed and fixed by the pad 13, which makes the pressing surface more flat, increases the friction and improves the pressing effect of the fastener 12 on the pull tab 100. In the embodiment, the pad 13 is a metal pad plate which is connected to one end of the fastener 12 by welding, and the metal pad plate is circular in shape to reduce the processing difficulty, and one end of the fastener 12 is connected to the center of the pad 13. In other embodiments, the pad 13 can be made of wood or plastic or other materials and can be processed into a triangular shape, a square shape, an oval shape or other shapes, which can increase the pressing area of the pull tab 100 and increase the friction.

[0081] In other embodiments, the pad 13 can be omitted, and one end of the fastener 12 directly abuts against the pull tab 100 when pressing the pull tab 100.

[0082] Referring to Figure 2In some embodiments of the present application, the plurality of fasteners 12 are arranged along the first direction A. In the above embodiments, the first direction A is used to simulate the arrangement direction of the pull tab 100 in the concrete, and the plurality of fasteners 12 arranged along the first direction A can uniformly stress the pull tab 100 in the length direction, simulate the situation that the pull tab 100 is fixed in the concrete everywhere, and make the simulation of the first assembly 1 fixed in the concrete closer to the actual situation.

[0083] Referring to Figure 3 In some embodiments of the present application, the stop surface 112 includes a first stop surface 112a and a second stop surface 112b, and the fastener 12 includes a first fastener 12a and a second fastener 12b. The first fastener 12a can clamp the pull tab 100 between one end of the first fastener 12a and the first stop surface 112a along the thickness direction of the pull tab 100, and the second fastener 12b can clamp the pull tab 100 between one end of the second fastener 12b and the second stop surface 112b along the second direction B. In the above embodiments, the first stop surface 112a and the second stop surface 112b are arranged respectively with the first fastener 12a and the second fastener 12b to press the pull tab 100, which can press the pull tab 100 in the width direction and the thickness direction at the same time, increase the pressing force of the pull tab 100, simulate the situation that the pull tab 100 is fixed in the concrete and stressed in four directions more closely, and facilitate the adjustment of the stress of the pull tab 100 in different directions. In the present embodiment, the first fastener 12a moves along the direction perpendicular to the first stop surface 112a, i.e., the thickness direction of the pull tab 100, and the second fastener 12b moves along the direction perpendicular to the second stop surface 112b, i.e., the second direction B. Therefore, the first stop surface 112a and the second stop surface 112b are perpendicular to each other. In other embodiments, the included angle between the first stop surface 112a and the second stop surface 112b can also be an acute angle or an obtuse angle, i.e., the first stop surface 112a and / or the second stop surface 112b can not completely abut against the pull tab. The first stop surface 112a and the second stop surface 112b can achieve the stop of the pull tab 100 along the length direction of the pull tab 100. In other embodiments, the fastener 12 can be arranged as one, and the fastener 12 can be close to the first stop surface 112a and the second stop surface 112b at the same time to press and fix the pull tab 100 in two directions.

[0084] Continuing to refer to Figure 3In some embodiments of the present application, the fixing cavity 111 includes a first fixing cavity 111a and a second fixing cavity 111b, the first fixing cavity 111a and the second fixing cavity 111b are distributed along the second direction B, the first fixing cavity 111a and the second fixing cavity 111b are communicated through a communication port 1110 extending along the first direction A, a first stop surface 112a and a second stop surface 112b are formed in the first fixing cavity 111a, one end of the first fastener 12a moves into the first fixing cavity 111a, and one end of the second fastener 12b moves into the second fixing cavity 111b. In the above-mentioned embodiments, considering that the pull tab 100 is usually a sheet-shaped structure, the thickness direction of the pull tab 100 is relatively narrow when the pull tab 100 is fixed in the fixing cavity 111, if one end of the fastener 12 on the side is narrower than the side of the pull tab 100, the strength of the fastener 12 is not enough to provide sufficient compression strength, and if one end of the fastener 12 on the side is wider than the side of the pull tab 100, sufficient space is needed to allow the fastener 12 to move. By extending the thickness side of the pull tab 100 from the first fixing cavity 111a to the second fixing cavity 111b and then compressing it with the second fastener 12b, the second fastener 12b can be prevented from being restricted by the structure of the main body 11 and cannot fully compress the pull tab 100. In this embodiment, the distance of the second fixing cavity 111b in the thickness direction of the pull tab 100 is greater than the distance of the first fixing cavity 111a in the thickness direction of the pull tab 100, so as to facilitate the movement of the second fastener 12b, and when the pull tab 100 is fixed in the first fixing cavity 111a, the pull tab 100 is located in the middle of the second fixing cavity 111b in the thickness direction of the pull tab 100, so that the pull tab 100 is uniformly stressed to avoid bending. Specifically, the pad 13 provided on the second fastener 12b can be provided with a groove structure, and when the second fastener 12b compresses the pull tab 100, the groove structure on the pad 13 on the second fastener 12b can be clamped on the thickness side of the pull tab 100 to prevent the pull tab from bending.

[0085] In other embodiments, one side of the fixing cavity 111 can be communicated with the outside of the main body 11, and the pull tab 100 is partially extended to the outside of the main body 11 when fixed in the fixing cavity 111, and the fastener 12 compresses the narrow side of the pull tab 100 outside the main body 11.

[0086] Referring to Figure 4 , Figure 5 In some embodiments of the present application, one end of the pressure arm 21 forms a pressure head 211 along the second direction B, and the diameter of the pressure head 211 gradually decreases along the second direction B. In the above-mentioned embodiments, the pressure head 211 with gradually reduced end size can make the pressure of the second assembly 2 on the pull tab 100 more concentrated when the second assembly 2 moves relative to the first assembly 1 to simulate the breaking of the pull tab 100, and the simulation effect is better. In this embodiment, the outer surface of the pressure head 211 is a conical surface, which is conducive to concentrating the pressure of the pull tab 100 breaking.

[0087] In other embodiments, the pressure head 211 can be omitted, and one end of the pressure arm 21 directly breaks the pull tab 100 along the second direction B.

[0088] Referring to Figure 5 In some embodiments of the present application, the outer surface of one end of the pressure arm 21 is provided with a groove 212 along the second direction B, and the groove wall of the groove 212 is arc-shaped along the cross section of the second direction B and the plane where the thickness of the pull tab 100 is located. In the above-mentioned embodiments, the pressure arm 21 can press on the pull tab 100 through the arc-shaped groove 212, which facilitates the pressure arm 21 to tightly hold the pull tab 100, prevents the pull tab 100 from sliding, and improves the accuracy of the detection result. Specifically, when the groove 212 is pressed on the pull tab 100, the groove 212 extends along the first direction A. In other embodiments, the cross section of the groove wall of the groove 212 can be square, triangular or other shapes, which can prevent the pull tab 100 from sliding when the pressure arm 21 presses the pull tab 100.

[0089] Referring to Figure 4 , Figure 5 In some embodiments of the present application, the second assembly 2 further comprises a connecting arm 22, the pressure arm 21 comprises a first pressure arm 21a and a second pressure arm 21b, and the connecting arm 22 connects the first pressure arm 21a and the second pressure arm 21b. The first pressure arm 21a and the second pressure arm 21b can move along the second direction B relative to the main body 11 to simultaneously press the two ends of the pull tab 100 that protrude out of the main body 11. In the above-mentioned embodiments, by providing the first pressure arm 21a and the second pressure arm 21b connected to each other, the two ends of the pull tab 100 can be broken at the same time, the stress condition of the two ends of the pull tab 100 is balanced, the pull tab 100 is prevented from moving, and the accuracy of the detection result is improved. In the present embodiment, the first pressure arm 21a and the second pressure arm 21b extend parallel to the second direction B relative to the connecting arm 22, which facilitates the end of the first pressure arm 21a away from the connecting arm 22 and the end of the second pressure arm 21b away from the connecting arm 22 to be aligned with the two ends of the pull tab 100 that protrude out of the fixed cavity 111. More preferably, the first pressure arm 21a and the second pressure arm 21b extend perpendicularly relative to the connecting arm 22, which can make the connecting arm 22 apply uniform force to the first pressure arm 21a and the second pressure arm 21b. In addition, the right-angled bending portions of the first pressure arm 21a, the second pressure arm 21b and the connecting arm 22 are circularly arc-shaped, which avoids stress concentration caused by right-angle connection. In the present embodiment, the first pressure arm 21a, the second pressure arm 21b and the connecting arm 22 are integrally provided.

[0090] Referring to Figure 6The embodiment provides a pull-tab performance detection system 102, which comprises a tensile testing machine 3 and the pull-tab breaking performance detection tool 101 in any of the above embodiments. The tensile testing machine 3 comprises a first chuck 31, a second chuck 32, a tensile slide rail 33 and a control analysis module 34. The tensile slide rail 33 extends in a straight line, the first chuck 31 and the second chuck 32 are slidably arranged on the tensile slide rail 33 and oppositely arranged, and the control analysis module 34 controls the movement of the first chuck 31 and the second chuck 32 and collects and analyzes the pressure value between the first chuck 31 and the second chuck 32. The first assembly 1 is detachably connected to the first chuck 31, and the second assembly 2 is detachably connected to the second chuck 32. The first assembly 1 and the second assembly 2 are relatively moved under the driving of the first chuck 31 and the second chuck 32 respectively, so that the tool 101 is in a working state. The system 102 described above cooperates the pull-tab performance detection tool 101 described above with the tensile testing machine 3, so that the quantitative force value of the breaking performance of the pull-tab 100 can be accurately measured when the pull-tab 100 is simulated to be broken, and the detection result can be quickly obtained.

[0091] In the embodiment, the main body 11 of the first assembly 1 is installed on the first chuck 31, the connecting arm 22 of the second assembly 2 is installed on the second chuck 32, and the second assembly 2 moves downward along the vertical direction to close to the first assembly 1 to break the two ends of the pull-tab 100 fixed on the first assembly 1.

[0092] Referring to Figure 1 、 Figure 6 The working principle of the pull-tab performance detection tool 101 and the system 102 in some embodiments of the application is as follows.

[0093] S1, the pull-tab 100 to be tested is placed horizontally and vertically into the fixed cavity 111 of the main body 11 of the first assembly 1. The pull-tab 100 can first enter the second fixed cavity 111b and then enter the first fixed cavity 111a through the communication port 1110 for fixation. The first fastener 12a is tightened, and the gasket 13 at the end thereof will be pressed and fixed from the horizontal direction of the pull-tab 100, i.e., from the thickness direction of the pull-tab 100.

[0094] S2, after the pull-tab 100 is fixed in the horizontal position, the second fastener 12b is tightened, and the gasket 13 at the end thereof will be pressed and fixed from the vertical downward direction of the pull-tab 100, i.e., from the width direction of the pull-tab 100.

[0095] S3, the first assembly 1 on which the pull-tab 100 is fixed is installed to the first chuck 31 of the tensile testing machine 3.

[0096] S4, the second assembly 2 is installed to the second chuck 32 of the tensile testing machine 3.

[0097] S5, start the tensile testing machine 3, test force loading mode is set to: "control mode" is selected "displacement (mm / min)", "test speed" is selected "8mm / min"; "end mode" is selected "fracture percentage (%) ", "end condition" is selected "5". Test force holding mode is set to: "holding type" is selected "current strain (%) ", "holding time" is selected "0 seconds".

[0098] S6, after setting, start the test, until the second assembly 2 on the second chuck 32 breaks the pull tab 100, that is, the quantitative force value of the breaking performance of the pull tab 100 can be obtained. As shown in Figure 7 The test force-displacement curve of a certain pull tab 100 test is shown, wherein the X-axis direction is displacement (mm), the Y-axis direction is test force (N), and the test force suddenly changes to 0 after moving a certain distance, then the corresponding displacement is the displacement required to break the test pull tab 100.

[0099] S7, replace different test pull tabs 100, repeat the above S1-S6 steps, and the breaking performance test results of different pull tabs 100 can be obtained, as shown in Table 1: pull tab 100 breaking performance test result table:

[0100] Test No. Sample Thickness (mm) Model Measured Thickness (mm) Sample Shape Maximum Force (N) 1 1.85 Double Tooth Single Hole Pull Tab 200 Type 1.876 Rectangular 24193 2 1.85 Double Tooth Single Hole Pull Tab 200 Type 1.873 Rectangular 23954 3 2.00 Double Tooth Single Hole Pull Tab 200 Type 2.020 Rectangular 27935 4 2.00 Double Tooth Single Hole Pull Tab 200 Type 2.019 Rectangular 27491 5 2.00 Double Tooth Single Hole Pull Tab 200 Type 2.007 Rectangular 27129

[0101] Through the analysis of Table 1, it can be seen that the thickness of the pull tab 100 is positively correlated with the maximum breaking force. Table 1 is only for reference, and different data can be measured according to different needs in actual application.

[0102] The present application provides a pull tab performance detection tool 101 and system 102, which uses a combined tool 101 to detect the breaking performance of the pull tab 100 in combination with the tensile testing machine 3, filling the gap in the performance detection method of the pull tab 100. The pull tab 100 is fixed on the first assembly 1 to simulate the situation that the pull tab 100 is fixed on the wall by the concrete when the aluminum formwork is removed, and then the second assembly 2 simulates the demolding tool when the aluminum formwork is removed, and then the second assembly 2 moves relative to the first assembly 1 to break the two ends of the pull tab 100 fixed on the first assembly 1, and the pressure between the first assembly 1 and the second assembly 2 during this process is measured and analyzed to detect the breaking performance of the pull tab 100. In cooperation with the tensile testing machine 3, the quantitative force value of the breaking performance of the pull tab 100 is accurately measured when the pull tab 100 is simulated to break, the detection result is quickly obtained, and it is determined whether the design scheme of the pull tab meets the actual use requirements, and the design of the pull tab can also be guided and corrected.

[0103] The above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application is explained in detail with reference to the above preferred embodiments, it should be understood by those ordinary skilled in the art that the technical solutions of the present application can be modified or equivalent replaced without departing from the spirit and scope of the technical solutions of the present application.

[0104] The information disclosed in the Background section of the present application is only intended to increase the understanding of the general background of the present application and should not be regarded as acknowledging or implicitly implying that such information constitutes the prior art known to those of ordinary skill in the art.

Claims

1. A tab performance detection tool, characterized in that, The utility model relates to a test device for testing the tensile strength of a pull tab, comprising: a first component for fixing the pull tab and simulating the pull tab being fixed to concrete, the first component comprising a main body and a fastener, the main body being provided with a fixing cavity for fixing the pull tab, the fixing cavity extending through opposite sides of the main body along a first direction, the first direction being the length direction of the pull tab, when the pull tab is arranged in the fixing cavity, both ends of the pull tab extending out of the main body along the first direction, the fixing cavity being provided with a stop surface, the fastener being arranged on the main body, the fastener being capable of moving relative to the main body and capable of clamping the pull tab together with the stop surface in the width direction and / or the thickness direction of the pull tab; a second component being a tool for simulating breaking the pull tab, the second component comprising a pressure arm; the pressure arm being capable of moving relative to the main body along a second direction to press against the part of the pull tab extending out of the main body, the second direction being the width direction of the pull tab; the stop surface comprising a first stop surface and a second stop surface, the fastener comprising a first fastener and a second fastener, the first fastener being capable of clamping the pull tab between one end of the first fastener and the first stop surface along the thickness direction of the pull tab, the second fastener being capable of clamping the pull tab between one end of the second fastener and the second stop surface along the second direction; the fixing cavity comprising a first fixing cavity and a second fixing cavity, the first fixing cavity and the second fixing cavity being distributed along the second direction, the first fixing cavity and the second fixing cavity being communicated through a communication port extending along the first direction, the first stop surface and the second stop surface being formed in the first fixing cavity, one end of the first fastener extending into the first fixing cavity to move, one end of the second fastener extending into the second fixing cavity to move.

2. The tab performance detection tool of claim 1, wherein: the main body being provided with a through hole communicating the fixing cavity with the outside of the main body, the fastener being threadedly connected with the through hole.

3. The tab performance detection tool of claim 1, wherein: one end of the fastener being provided with a pad, the pad being used for abutting against the pull tab and capable of clamping the pull tab between the pad and the stop surface when the fastener moves.

4. The tab performance detection tool of claim 1, wherein: the fastener being provided with a plurality of fasteners, the plurality of fasteners being distributed along the first direction at intervals.

5. The tab performance detection tool of claim 1, wherein: one end of the pressure arm being formed with a pressure head along the second direction, the diameter of the pressure head gradually decreasing along the second direction.

6. The tab performance detection tool of claim 1, wherein: the outer surface of one end of the pressure arm being provided with a groove along the second direction, the groove wall section being arc-shaped.

7. The tab performance detection tool of claim 1 or 5 or 6, wherein: the second component further comprising a connecting arm, the pressure arm comprising a first pressure arm and a second pressure arm, the connecting arm connecting the first pressure arm and the second pressure arm, the first pressure arm and the second pressure arm being capable of moving relative to the main body along the second direction to simultaneously press against both ends of the pull tab extending out of the main body.

8. A tab performance detection system, characterized by, ​ The tensile testing machine comprises a first chuck, a second chuck, a tensile slide rail and a control analysis module, the tensile slide rail extends in a straight line, the first chuck and the second chuck are slidably arranged on the tensile slide rail and oppositely arranged, and the control analysis module controls the movement of the first chuck and the second chuck and collects and analyzes the pressure value between the first chuck and the second chuck. The tensile testing machine comprises a first chuck, a second chuck, a tensile slide rail and a control analysis module, the tensile slide rail extends in a straight line, the first chuck and the second chuck are slidably arranged on the tensile slide rail and oppositely arranged, and the control analysis module controls the movement of the first chuck and the second chuck and collects and analyzes the pressure value between the first chuck and the second chuck. The first assembly and the second assembly are driven by the first chuck and the second chuck respectively and move oppositely along the second direction.

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