A steel strip tension tester

Abstract

This application provides a steel strip tension tester, comprising: a support rod, two fixing members, a pressure applying device, and two strain gauges; the two fixing members are both disposed on the same side of the support rod and arranged sequentially along the length of the support rod, with a preset distance between the fixing members and the support rod to form a space through which the steel strip to be tested passes; the pressure applying device includes a pressure block and a handle, the pressure block being movably disposed on the support rod and located between the two fixing members, the movement direction of the pressure block being perpendicular to the length of the support rod and being movable towards or away from the steel strip to be tested; the handle is connected to the pressure block and is suitable for pushing the pressure block to press against the steel strip to be tested, causing the steel strip to bend; the two strain gauges are respectively disposed on opposite sides of the support rod, and the strain gauges and fixing members are respectively located on adjacent sides of the support rod. The tester of this application, through the combined use of the pressure block and the handle, stretches the steel strip to be tested by a fixed distance, which can effectively improve the accuracy of the steel strip tension test results.

Description

Technical Field

[0001] This utility model belongs to the field of tension testing technology, specifically, it relates to a steel strip tension tester. Background Technology

[0002] Regularly conducting tension tests on steel strips during operation is a crucial industrial quality control and safety assurance procedure. Currently, when testing the tension of installed steel strips (such as elevator steel strips), it is necessary to first manually stretch the steel strip to be tested along its length perpendicular to a distance greater than 30cm, and then use a traditional testing instrument to measure the tension. However, this method relies on manual stretching of the steel strip, and the tension applied by the human hand is unstable, resulting in an inconsistent stretching distance and thus low accuracy in the measured steel strip tension. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a steel strip tension tester, including: a support rod, two fixing parts, a pressure application device and two strain gauges;

[0004] Both fasteners are located on the same side of the support rod and are arranged sequentially along the length of the support rod. A preset distance is provided between the fasteners and the support rod to form a space for the steel strip to be tested to pass through.

[0005] The pressure device includes a pressure block and a handle. The pressure block is movably mounted on the support rod and located between two fixed members. The direction of movement of the pressure block is perpendicular to the length direction of the support rod and can move towards or away from the steel strip to be tested. The handle is connected to the pressure block and is suitable for pushing the pressure block to press against the steel strip to be tested so that the steel strip to be tested applies force to the two fixed members and the pressure block, so as to cause a slight deformation of the support rod.

[0006] Two strain gauges are respectively installed on opposite sides of the support rod, and the strain gauges and the fixing components are respectively located on adjacent sides of the support rod.

[0007] In one possible implementation, the pressure-applying device further includes a first drive shaft and a second drive shaft;

[0008] The first drive shaft is connected to the pressure block and one end of the second drive shaft at both ends, and the other end of the second drive shaft is connected to the handle.

[0009] In one possible implementation, the support rod has a first groove and a second groove;

[0010] The first groove is adapted to the fastener and is suitable for embedding one side of the fastener into the first groove; the second groove is adapted to the pressure block and is suitable for embedding the pressure block into the second groove.

[0011] In a possible implementation manner, two first grooves are provided.

[0012] In a possible implementation manner, it further includes a mounting portion;

[0013] The mounting portion is arranged on the side of the support rod facing the handle, and the cross-section of the mounting portion is in a "C" shape. One end of the handle extends into the cavity surrounded by the mounting portion from the opening of the mounting portion and is rotatably connected to the mounting portion.

[0014] In a possible implementation manner, it further includes a connecting shaft;

[0015] The connecting shaft is arranged in the cavity of the mounting portion, and both ends of the connecting shaft are respectively connected to the opposite side walls of the mounting portion. The handle is rotatably arranged on the connecting shaft so that the handle rotates around the connecting shaft in the cavity of the mounting portion.

[0016] In a possible implementation manner, it further includes a display device. The display device is arranged at the top of the support rod and is electrically connected to the two strain gauges.

[0017] Advantageous effects: The present application is provided with a pressing device. Through the cooperation of its pressing block and the handle, the measured steel strip can be stretched and fixed by a certain distance perpendicular to the length direction of the steel strip body, so that the tensile force received by the steel strip is the same. Therefore, the measured tension value of the measured steel strip is also a fixed value, which solves the problem of low measurement accuracy caused by inconsistent stretching distances of the steel strip due to unstable tensile force in the traditional steel strip tension tester when manually stretching the steel strip. It can effectively improve the accuracy of the steel strip measurement result. Moreover, the structure of the steel strip tension tester of the present application is simple. It only needs to directly connect the tester of the present application to the already stretched and deformed steel strip for tension testing, which is more convenient compared to the traditional steel strip tension tester.

[0018] The following further describes in detail the specific implementation manners of the present utility model in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The following drawings in the description are only some embodiments. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts. In the drawings:

[0020] Figure 1 is a schematic structural diagram of a steel strip tension tester according to an embodiment of the present utility model;

[0021] Figure 2 is a front view of an embodiment of the present utility model Figure 1 ;

[0022] Figure 3 is a side view of an embodiment of the present utility model Figure 1 ;

[0023] Figure 4 This is a schematic diagram of a display device according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the connection between the handle and the pressure block according to an embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the steel strip installation according to an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of a steel strip tension test according to an embodiment of the present invention;

[0027] The attached diagram lists the components represented by each number as follows:

[0028] Support rod 100, second bolt hole 110, fastener 200, pressure device 300, pressure block 310, handle 320, connecting shaft 330, mounting part 340, second drive shaft 350, first drive shaft 360, display device 400, third mounting groove 410, mounting plate 420, display screen 430, control button 440, strain gauge 500, power supply 600, steel strip 700.

[0029] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0030] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0031] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application or to simplify the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0033] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0034] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed embodiments. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0035] Figure 1 This invention provides a schematic diagram of the structure of a steel strip tension tester according to an embodiment of the present application. Figure 2 This is a front view of a steel strip tension tester according to an embodiment of this application. Figure 3 A side view of a steel strip tension tester according to an embodiment of this application is shown. See also: Figures 1 to 3 As shown, the testing instrument includes a support rod 100, two fixing members 200, a pressure applying device 300, and two strain gauges 500. The two fixing members 200 are both located on the same side of the support rod 100 and arranged sequentially along the length of the support rod 100. A preset distance is provided between the fixing members 200 and the support rod 100 to form a space for the steel strip to be tested to pass through. The pressure applying device 300 includes a pressure block 310 and a handle 320. The pressure block 310 is movably mounted on the support rod 100 and located between the two fixing members 200. The movement direction of the pressure block 310 is perpendicular to the length direction of the support rod 100 and can move towards or away from the steel strip to be tested; the handle 320 is connected to the pressure block 310 and is suitable for pushing the pressure block 310 to press against the steel strip to be tested so that the steel strip to be tested applies force to the two fixing members 200 and the pressure block 310 to cause a small deformation of the support rod 100; two strain gauges 500 are respectively arranged on opposite sides of the support rod 100, and the strain gauges and fixing members 200 are respectively located on adjacent sides of the support rod 100.

[0036] This application includes a pressure device. Through the combined use of its pressure block and handle, the steel strip to be tested can be stretched a fixed distance perpendicular to the length of the steel strip, ensuring that the tensile force on the steel strip is uniform. Therefore, the measured tension value of the steel strip is also a fixed value. This solves the problem of low measurement accuracy caused by the unstable tension and inconsistent stretching distance of the steel strip in traditional steel strip tension testers, effectively improving the accuracy of steel strip measurement results. Moreover, the steel strip tension tester of this application has a simple structure. It only requires direct connection of the tester to the already stretched and deformed steel strip for tension testing, making it more portable than traditional steel strip tension testers.

[0037] Furthermore, in the initial state of the steel strip tension tester of this application, the handle 320 of the tester moves away from the support rod 100, causing the pressure block 310 to be embedded in the support rod 100, so that the steel strip 700 to be tested can be smoothly embedded in the space reserved by the fixing member 200 while covering the pressure block 310. Next, when testing the steel strip 700, the handle 320 drives the pressure block 310 towards the steel strip 700, causing the steel strip 700 to bend. At this time, the steel strip 700 applies pressure to both fixing members 200 and the pressure block 310, allowing the steel strip 700 to exert force on the two fixing members 200 and the pressure block 310. This causes a slight deformation in the support rod 100 connected to the two fixing members 200 and the pressure block 310. At this time, the wire mesh on the surface of the strain gauges 500 on both sides of the support rod 100 also changes with the deformation of the support rod 100. Thus, the tension value of the steel strip 700 can be obtained from the two strain gauges 500. In other words, the tension of the steel strip 700 can be directly obtained by using the steel strip tension tester of this application through the cooperation of the pressure device 300 and the strain gauges 500, without the need to manually stretch the steel strip along its length direction before testing, making the test simpler and more convenient.

[0038] The space between the fixing member 200 and the support rod 100 is set at a preset distance to form a space through which the steel strip to be tested passes. The preset distance is preferably set to 8mm. Therefore, the thickness of the steel strip 700 to be tested should not exceed 8mm.

[0039] In one possible implementation, the support rod 100 has a first groove and a second groove. The first groove is adapted to the fastener 200 and is suitable for embedding one side of the fastener 200 into the first groove. The second groove is adapted to the pressure block 310 and is suitable for embedding the pressure block 310 into the second groove.

[0040] In one possible implementation, see [link to relevant documentation] Figure 1As shown, a first bolt hole is provided at the bottom of the first groove, and a second bolt hole 110 is provided on the side of the fastener 200 that is embedded in the first groove, so that the fastener 200 can be bolted into the first groove of the support rod 100 through the first bolt hole and the second bolt hole 110. Specifically, when installing the fastener 200, the side of the fastener 200 with the first bolt hole is embedded into the first groove, and the fastener 200 is installed into the first groove of the support rod 100 using bolts through the second bolt hole 110 on the side of the support rod 100 opposite to the fastener 200.

[0041] In one possible implementation, two first grooves are provided, each matching one of two fasteners 200, and the two fasteners 200 are connected to the support rod 100 in the same way. It should also be noted that the openings of the two fasteners 200 are aligned during installation.

[0042] In one possible implementation, the pressure block 310 is embedded in the second groove to position the pressure block 310 on the support rod 100. The main body of the pressure block 310 has a concave structure, and the concave position of the pressure block 310 is embedded in the second groove. The two protrusions on both sides of the pressure block 310 are engaged with the two sides of the support rod 100 to prevent the pressure block 310 from moving along the length of the support rod 100.

[0043] In one possible implementation, see [link to relevant documentation] Figure 5 As shown, the pressure application device 300 of this application also includes a first drive shaft 360 and a second drive shaft 350. The two ends of the first drive shaft 360 are respectively connected to the pressure block 310 and one end of the second drive shaft 350, and the other end of the second drive shaft 350 is connected to the handle 320.

[0044] In one possible implementation, the first drive shaft 360 has a cylindrical structure and is bolted to the pressure block 310. That is, a first bolt hole is also provided in the recessed position of the pressure block 310, and a second bolt hole 110 is also provided at the end where the first drive shaft 360 is connected to the pressure block 310, which is suitable for connecting the pressure block 310 and the first drive shaft 360 with bolts.

[0045] In one possible implementation, the second drive shaft 350 is also cylindrical, and the diameter of the second drive shaft 350 is smaller than the diameter of the first drive shaft 360. The end of the first drive shaft 360 connected to the second drive shaft 350 is provided with a first mounting groove, and one side of the first mounting groove is open. The second drive shaft 350 is adapted to be obliquely inserted into the first mounting groove from the opening, so that the first drive shaft 360 and the second drive shaft 350 are connected.

[0046] Meanwhile, the other end of the second drive shaft 350 is connected to the handle 320. The handle 320 has a second mounting groove, and the second mounting groove is adapted to the end of the second drive shaft 350 that is connected to the handle 320, so that the second drive shaft 350 can be embedded in the second mounting groove, thereby connecting the second drive shaft 350 to the handle 320.

[0047] In one possible implementation, see [link to relevant documentation] Figures 1 to 7 As shown, the steel strip tension tester of this application also includes a mounting part 340, which is disposed on the side of the support rod 100 facing the handle 320. The mounting part 340 has a "U"-shaped cross-section, and one end of the handle 320 extends into the cavity enclosed by the mounting part 340 through the opening of the mounting part 340. Connecting parts are provided on the outer walls of the mounting part 340 on opposite sides extending towards the support rod 100, so that the mounting part 340 is engaged with the side of the support rod 100 facing the handle 320 via the connecting parts. In one possible implementation, the connecting part has a third bolt hole for bolting the mounting part 340 to the support rod 100.

[0048] In one possible implementation, a connecting shaft 330 is also included, which is disposed in the cavity of the mounting portion 340, and the two ends of the connecting shaft 330 are respectively connected to the opposite side walls of the mounting portion 340. The handle 320 is rotatably disposed on the connecting shaft 330 so that the handle 320 can rotate around the connecting shaft 330 in the cavity of the mounting portion 340.

[0049] In one possible implementation, one end of the handle 320 is sleeved on the connecting shaft 330, and both ends of the connecting shaft 330 are respectively connected to the opposite side walls of the mounting portion 340. A second mounting groove is provided inside the connection between the handle 320 and the connecting shaft 330, suitable for the handle 320 to rotate around the connecting shaft 330, thereby driving the pressure block 310 to move via the first drive shaft 360 and the second drive shaft 350. It should be noted that the first drive shaft 360 and the second drive shaft 350 are disposed through the mounting portion 340.

[0050] In one possible implementation, see [link to relevant documentation] Figure 6 and Figure 7 As shown, when the handle 320 moves around the connecting shaft 330 in a direction away from the support rod 100, the second drive shaft 350 also moves with the handle 320 in a direction away from the support rod 100. At this time, the second drive shaft 350 drives the pressure block 310 connected through the first drive shaft 360 to move in the direction of the handle 320, so that the steel strip 700 to be tested can be smoothly embedded into the recessed position of the fixing member 200, while the steel strip 700 to be tested covers the pressure block 310.

[0051] When it is necessary to deform the steel strip 700 to be tested, pressure is applied to the handle 320 toward the support rod 100. At this time, the second drive shaft 350 pushes the first drive shaft 360 toward the pressure block 310, so that the first drive shaft 360 pushes the pressure block 310 toward the steel strip 700 to be tested, so as to press the steel strip 700 to be tested covering the pressure block 310 tightly, thereby causing the steel strip 700 to be tested to deform.

[0052] In one possible implementation, see [link to relevant documentation] Figure 7 As shown, the pressure block 310 presses the steel strip 700 to be tested tightly, causing the steel strip 700 to deform. At this time, the steel strip 700 exerts a leftward pulling force on the two fixing members 200 and a rightward pressure on the pressure block 310. At this time, the two ends of the support rod 100 connected to the two fixing members 200 are subjected to the tension of the steel strip 700 to be tested, and the middle position connected to the pressure block 310 is subjected to the pressure exerted by the steel strip 700 to be tested, causing the support rod 100 to undergo a slight bending deformation. Two strain gauges 500 are set on both sides of the support rod 100. When the support rod 100 undergoes a slight bending deformation, the wire mesh on the surface of the two strain gauges 500 also changes synchronously. Therefore, the tension value of the steel strip to be tested can be obtained according to the change of the wire mesh on the surface of the strain gauges 500.

[0053] In one possible implementation, see [link to relevant documentation] Figure 1 and Figure 4 As shown, it also includes a display device 400, which is disposed on the top of the support rod 100 and electrically connected to the two strain gauges 500. The display device 400 is bolted to the support rod 100.

[0054] In one possible implementation, see [link to relevant documentation] Figure 4 As shown, the main body of the display device 400 has an inverted L-shaped structure, which is suitable for installation on the top of the support rod 100, and the display device 400 and the support rod 100 are bolted together.

[0055] In one possible implementation, the top of the display device 400 includes a third mounting slot 410 and a mounting cover 420, the third mounting slot 410 being bolted to the mounting cover 420, the third mounting slot 410 being adapted to mount a power supply 600 to power the display device 400, and the mounting cover 420 being adapted to close the third mounting slot 410.

[0056] In one possible implementation, the third mounting slot 410 is suitable for mounting a 9V standard battery for power supply.

[0057] In one possible implementation, the display device 400 further includes a main control chip, a display screen 430, and a control button 440. The display screen 430 and the control button 440 are both disposed on the outer wall of the display device 400, while the main control chip is disposed in the inner cavity of the display device 400. The display screen 430 and the control button 440 are both electrically connected to the main control chip. The main control chip is electrically connected to two strain gauges 500 and a power supply 600, respectively. When using the testing instrument of this application, the control button 440 controls the testing instrument to turn on, so that the power supply 600 supplies power to the control circuit where the main control chip is located. At this time, the two strain gauges 500 continuously send electrical signals to the main control chip. When the steel strip 700 under test deforms, causing the support rod 100 to also deform, the wire mesh distance on the surface of the two strain gauges 500 also changes. At this time, the electrical signals sent by the two strain gauges 500 to the main control chip change. The main control chip calculates the tension value of the steel strip under test based on the changes in the received electrical signals and displays it on the display screen 430. Wiring holes are provided on both the side of the display device 400 facing the support rod 100 and the side of the support rod 100 facing the display device 400, allowing the wires connecting the two strain gauges 500 to the main control chip to pass through.

[0058] In one possible implementation, the testing instrument of this application is further equipped with parameters corresponding to various steel strip widths. Before measuring the tension value of the steel strip to be tested, the width of the steel strip to be tested is selected via control button 440, and then the tension value is measured. By selecting the corresponding parameters for different steel strip widths before testing the tension of the steel strip, the test results are more accurate, thus further improving the testing accuracy of the steel strip.

[0059] In one possible implementation, the 700mm steel strip width is set in four ways: b-32KN, b-34KN, b-43KN, and b-64KN.

[0060] In one possible implementation, this application also includes an automatic shutdown function. This function is applicable when the display device 400 is forgotten to be turned off after measurement. The display device 430 can automatically shut down after a preset time has elapsed, thus extending the lifespan of the power supply. It should be noted that the preset time can be set according to actual needs and is not specifically limited.

[0061] The steel strip 700 tension tester of this application is simple in structure and easy to carry. Therefore, it can be directly inserted into the installation space of the steel strip and connected to the steel strip 700 to be tested. That is, firstly, the user lifts the handle 320 and inserts the pressure block 310 into the second groove. The width of the steel strip 700 to be tested is selected by the control button 440. Then, the steel strip 700 to be tested is smoothly inserted into the space reserved by the two fixing parts 200. At the same time, the steel strip 700 to be tested covers the pressure block 310. Pressing down the handle 320 moves the pressure block 310 toward the steel strip 700, so that the pressure block 310 presses the steel strip 700 to be tested tightly, thereby making the steel strip 700... When the test steel strip 700 deforms, it applies pressure to the fixing member 200 and the pressure block 310, causing them to be subjected to the force exerted by the steel strip 700. This results in a slight bending deformation of the support rod 100 connected to the fixing member 200 and the pressure block 310. Simultaneously, the wire mesh on the surface of the strain gauge 500 on both sides of the support rod 100 also changes. At this time, the electrical signal sent by the strain gauge 500 to the main control chip changes. The main control chip calculates the tension value of the steel strip under test based on the change in the received electrical signal and displays it on the display screen 430.

[0062] It should be noted that the distance by which the handle 320 drives the pressure block 310 toward the steel strip 700 is a fixed distance, and this fixed distance is greater than 30cm. In other words, the steel strip 700 under test is stretched a distance greater than 30cm along its length, and this is a fixed distance. This reduces the deformation error of the steel strip 700 and can effectively improve the accuracy of the tension test of the steel strip 700.

[0063] It should also be noted that traditional testing instruments, due to their complex structure and large size, require the steel strip 700 to be stretched a considerable distance when measuring the tension of the steel strip. In contrast, the testing instrument of this application, with its simple structure and small size, can perform measurements from a position more than 30cm away from the fixed point of the steel strip 700, making the measurement much simpler.

[0064] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A steel strip tension meter characterized by, Comprising: A support rod, two fixing members, a pressing device and two strain gauges; The two fixing members are both arranged on the same side of the support rod and arranged in sequence along the length direction of the support rod. A preset distance is provided between the fixing member and the support rod to form a space for passing the steel strip to be tested; The pressing device includes a pressing block and a handle. The pressing block is movably arranged on the support rod and located between the two fixing members. The moving direction of the pressing block is perpendicular to the length direction of the support rod and can move in the direction towards or away from the steel strip to be tested; The handle is connected to the pressing block and is adapted to push the pressing block to press against the steel strip to be tested so that the steel strip to be tested applies force to the two fixing members and the pressing block, causing a slight deformation of the support rod; The two strain gauges are respectively arranged on the opposite sides of the support rod, and the strain gauges and the fixing members are respectively located on the adjacent side surfaces of the support rod.

2. The steel strip tension tester according to claim 1, characterized in that, The pressing device further includes a first transmission shaft and a second transmission shaft; Both ends of the first transmission shaft are respectively connected to the pressing block and one end of the second transmission shaft, and the other end of the second transmission shaft is connected to the handle.

3. The steel belt tension tester of claim 1, wherein, The support rod is provided with a first groove and a second groove; The first groove is adapted to the fixing member and is adapted to embed one side of the fixing member into the first groove; The second groove is adapted to the pressing block and is adapted to embed the pressing block into the second groove.

4. A steel strip tension meter according to claim 3, characterised in that There are two first grooves.

5. The steel belt tension tester of claim 1, wherein It further includes a mounting portion; The mounting portion is arranged on the side of the support rod facing the handle, and the cross-section of the mounting portion is in a "C" shape. One end of the handle extends into the cavity surrounded by the mounting portion from the opening of the mounting portion and is rotatably connected to the mounting portion.

6. A steel strip tension meter according to claim 5, characterised in that It further includes a connecting shaft; The connecting shaft is arranged in the cavity of the mounting portion, and both ends of the connecting shaft are respectively connected to the opposite side walls of the mounting portion. The handle is rotatably arranged on the connecting shaft so that the handle rotates around the connecting shaft in the cavity of the mounting portion.

7. A steel strip tension tester according to claim 1, characterized in that, It further includes a display device, and the display device is arranged on the top of the support rod and is electrically connected to the two strain gauges.

Images