Tension detection device and method thereof

Abstract

A tension detection device and a method thereof are used to detect a tension applied to a binding element. The tension detection device includes a tension-to-pressure conversion assembly, wherein the tension-to-pressure conversion assembly is used to convert the tension applied to the binding element into a pressure; and a pressure sensor, wherein the pressure sensor is correspondingly arranged to measure the pressure converted by the tension-to-pressure conversion assembly to obtain the tension applied to the binding element, so as to prevent the binding element from being too tight or too loose to a fuel cell stack.

Description

Technical Field

[0001] This invention relates to the field of fuel cell technology, and in particular to a tensile force detection device and method thereof. Background Technology

[0002] A fuel cell is a power generation device that directly converts the chemical energy of fuel into electrical energy through an electrochemical reaction. However, a single fuel cell (or fuel cell unit) can only provide relatively low voltage and output power. In practical applications, multiple fuel cells are typically stacked together to form a fuel cell stack capable of achieving high voltage and high power output. Accordingly, a fuel cell stack is formed by stacking multiple fuel cell units together.

[0003] Fuel cell stacks require structural stability during operation to ensure a stable and continuous power output. Current fuel cell stacks typically use fastening methods, such as screws, to hold the stacked fuel cell units together. However, simply fixing the stacked fuel cell units directly can lead to uneven stress distribution across the stack. This uneven stress can affect the stack's sealing performance and power transmission capabilities, ultimately impacting its power output. Furthermore, uneven stress can cause deformation of the flow field plates due to excessive localized stress, and may even damage the proton exchange membrane, rendering the stack unusable. Therefore, before being fixed, existing fuel cell stacks often require pressing with a clamping machine to tightly stack the fuel cell units, ensuring a secure seal.

[0004] An existing automated fuel cell stacking device typically includes a stacking mechanism, a removal mechanism, a robotic arm, and a control mechanism. The stacking mechanism's pressing frame can move via guide rails on the workbench, allowing the pressing frame's tightening frame to align with and press the fuel cell stack on the mounting platform of the stacking mechanism. The pressed fuel cell stack is then fixed together by screws.

[0005] However, when using screws to fix the fuel cell stack in this automated stacking device, not only is it necessary to use specialized tools (such as wrenches) to manually fix the compressed fuel cell stack together, resulting in low assembly efficiency and increased costs; but in order to ensure the structural stability of the fuel cell stack, multiple pairs of screws are often required to achieve the purpose of fastening. However, this can exacerbate the problem of uneven stress because the tightening force of multiple screws is difficult to be consistent. In particular, it is difficult to detect the tightening force of each screw. Once the tightening force of the same pair of screws is inconsistent, it is very easy to cause the fuel cell cells to warp or deform, and the sealing performance of the fuel cell stack cannot be guaranteed. Summary of the Invention

[0006] One advantage of the present invention is that it provides a tension detection device and method that can detect the magnitude of the tension on the binding element to prevent the binding element from being too tight or too loose on the fuel cell stack.

[0007] Another advantage of the present invention is that it provides a tensile force detection device and method, wherein, in one embodiment of the present invention, the tensile force detection device is capable of detecting the tensile force on the binding elements at different binding positions on the fuel cell stack, so as to ensure that the binding force of all binding elements is consistent, and that the force at different binding positions on the fuel cell stack is uniform.

[0008] Another advantage of the present invention is that it provides a tensile force detection device and method, wherein, in one embodiment of the present invention, the tensile force detection device can cleverly convert the tensile force on the binding element into pressure, so as to obtain the tensile force on the binding element through a pressure sensor, which helps to reduce the difficulty of detecting the tensile force on the binding element.

[0009] Another advantage of the present invention is that it provides a tensile force detection device and method, wherein, in one embodiment of the present invention, the tensile force detection device can convert the tensile force on the binding element into pressure in an equal amount, so that the pressure directly measured by the pressure sensor is equal to the tensile force on the binding element, thereby eliminating the step of calculating the tensile force on the binding element.

[0010] Another advantage of this invention is that it provides a tensile testing device and method, wherein, to achieve the above-mentioned objectives, expensive materials or complex structures are not required. Therefore, this invention successfully and effectively provides a solution that not only offers a simple tensile testing device and method, but also increases the practicality and reliability of the tensile testing device and method.

[0011] To achieve at least one of the above advantages or other advantages and objectives, the present invention provides a tensile force detection device for detecting the tensile force experienced by a binding element, wherein the tensile force detection device comprises:

[0012] A tension-compression conversion assembly, wherein the tension-compression conversion assembly is used to convert the tension force on the binding element into pressure force; and

[0013] A pressure sensor is provided to measure the magnitude of the pressure converted via the tension-compression conversion assembly in order to determine the magnitude of the tension force on the binding element.

[0014] According to one embodiment of this application, the tension-compression conversion assembly includes a first limiting mechanism for restricting the strapping element from passing through a first limiting position, a second limiting mechanism for restricting the strapping element from passing through a second limiting position, and a pressure-bearing mechanism for guiding the strapping element from passing through a pressure-bearing position. The pressure-bearing mechanism is correspondingly disposed between the first limiting mechanism and the second limiting mechanism, and the first limiting position, the second limiting position, and the pressure-bearing position are arranged in a triangular pattern to cause the strapping element to bend at the pressure-bearing position to apply pressure to the pressure-bearing mechanism, thereby converting the tension force on the strapping element into the pressure force on the pressure-bearing mechanism. A pressure sensor is correspondingly disposed on the pressure-bearing mechanism to measure the magnitude of the pressure force on the pressure-bearing mechanism.

[0015] According to one embodiment of this application, the distance between the first limiting position and the pressure-bearing position is equal to the distance between the second limiting position and the pressure-bearing position.

[0016] According to one embodiment of this application, the tensile testing device further includes a testing frame, wherein the tensile-compression conversion component and the pressure sensor are correspondingly disposed on the testing frame to form an independent device with tensile testing function.

[0017] According to one embodiment of this application, the first limiting mechanism includes a first limiting wheel, and the first limiting wheel is correspondingly mounted on the detection frame to define the first limiting position by the outer periphery of the first limiting wheel; wherein the second limiting mechanism includes a second limiting wheel, and the second limiting wheel is correspondingly mounted on the detection frame to define the second limiting position by the outer periphery of the second limiting wheel.

[0018] According to one embodiment of this application, the first limiting mechanism further includes a first guide wheel, and the first guide wheel and the first limiting wheel are spaced apart to form a first guide channel between the first guide wheel and the first limiting wheel, for guiding the binding element passing through the first guide channel to contact the outer periphery of the first limiting wheel to define the first limiting position; wherein the second limiting mechanism further includes a second guide wheel, and the second guide wheel and the second limiting wheel are spaced apart to form a second guide channel between the second guide wheel and the second limiting wheel, for guiding the binding element passing through the second guide channel to contact the outer periphery of the second limiting wheel to define the second limiting position.

[0019] According to one embodiment of this application, the height of the first guide channel and the height of the second guide channel are both equal to the thickness of the binding element.

[0020] According to one embodiment of this application, the first limiting mechanism further includes a first guide wheel, and the first guide wheel is correspondingly disposed for guiding the direction of the binding element passing through the first guide channel; wherein the second limiting mechanism further includes a second guide wheel, and the second guide wheel is correspondingly disposed for guiding the direction of the binding element passing through the second guide channel.

[0021] According to one embodiment of this application, the first limiting wheel, the first guide wheel, and the first guide wheel are arranged in a triangular configuration, and the first guide wheel is located between the first limiting wheel and the first guide wheel; wherein the second limiting wheel, the second guide wheel, and the second guide wheel are arranged in a triangular configuration, and the second guide wheel is located between the second limiting wheel and the second guide wheel.

[0022] According to one embodiment of this application, the first limiting wheel is a first fixed pulley installed on the detection frame, wherein the second limiting wheel is a second fixed pulley installed on the detection frame.

[0023] According to one embodiment of this application, the first limiting mechanism further includes a guide frame, wherein the guide frame is rotatably mounted on the detection frame with the rotation axis of the first fixed pulley as the axis, and the first guide wheel and the first guide wheel are rotatably mounted on the guide frame, wherein the second guide wheel and the second guide wheel are rotatably mounted on the detection frame.

[0024] According to one embodiment of this application, the pressure-bearing mechanism of the tension-compression conversion assembly includes a pressure-bearing base and a pressure-bearing wheel, wherein the pressure-bearing base is slidably disposed on the detection frame, and the pressure-bearing wheel is correspondingly disposed on the pressure-bearing base, wherein the pressure sensor is correspondingly disposed on the pressure-bearing base, and the pressure-bearing base is located between the pressure sensor and the pressure-bearing wheel to define the pressure-bearing position by the outer periphery of the pressure-bearing wheel.

[0025] According to one embodiment of this application, the pressure-bearing base has a pressure-bearing end and a measuring end, wherein the pressure sensor is correspondingly disposed on the measuring end of the pressure-bearing base, and the pressure-bearing wheel is rotatably disposed on the pressure-bearing end of the pressure-bearing base.

[0026] According to one embodiment of this application, the pressure-bearing base further has a rolling groove disposed at the pressure-bearing end, wherein the pressure-bearing wheel is a roller, and the roller is partially exposed and placed in the rolling groove of the pressure-bearing base to roll within the rolling groove.

[0027] According to one embodiment of this application, the pressure-bearing mechanism further includes a plurality of balls, wherein the plurality of balls are rotatably disposed in the rolling groove and located between the inner wall of the rolling groove and the roller.

[0028] According to one embodiment of this application, the pressure-bearing base further includes a limiting cover with an opening, wherein the limiting cover is fitted onto the rolling groove to partially cover the rolling groove and restrict the position of the plurality of balls, and a portion of the roller is exposed from the opening of the limiting cover.

[0029] According to one embodiment of this application, the detection frame has a sliding groove, wherein the sliding groove extends along the direction in which the binding element applies pressure to the pressure roller, and the pressure base is slidably disposed in the sliding groove to slide along the sliding groove.

[0030] According to one embodiment of this application, the pressure sensor includes a sensitive element and a conversion element, wherein the sensitive element is protrudingly disposed on the conversion element and contacts the measuring end of the pressure-bearing base for sensing the strain of the pressure-bearing base, wherein the conversion element is used to convert the strain sensed by the sensitive element into a corresponding electrical signal to output a corresponding pressure value; wherein the pressure-bearing base further has a receiving groove disposed on the measuring end, and the receiving groove is used to contact and receive the head of the sensitive element of the pressure sensor, such that the tail of the sensitive element is exposed outside the receiving groove.

[0031] According to another aspect of this application, one embodiment of this application further provides a tensile force detection method, including the steps of:

[0032] Convert the tensile force on a bundle of components into a compressive force; and

[0033] The magnitude of the converted pressure is measured to determine the magnitude of the tension force on the binding element.

[0034] According to one embodiment of this application, the step of converting the tensile force on a binding element into a compressive force includes the following steps:

[0035] The binding element is restricted from passing through a first limiting position;

[0036] The binding element is restricted from passing through a second limiting position; and

[0037] The binding element is guided through a pressure-bearing position, wherein the first limiting position, the second limiting position, and the pressure-bearing position are arranged in a triangle to cause the binding element, which passes through the first limiting position, the pressure-bearing position, and the second limiting position in sequence, to bend at the pressure-bearing position to convert tension into pressure.

[0038] The further objects and advantages of the invention will become fully apparent from the following description and accompanying drawings.

[0039] These and other objects, features and advantages of the present invention will be fully realized through the following detailed description, drawings and claims. Attached Figure Description

[0040] Figure 1 This is a perspective view of a production line equipment for assembling fuel cell stacks according to an embodiment of this application.

[0041] Figure 2 A partially enlarged schematic diagram of the assembly line equipment for assembling fuel cell stacks according to the above embodiments of this application is shown.

[0042] Figure 3 This is a schematic diagram illustrating the application of a tensile testing device according to an embodiment of this application.

[0043] Figure 4 An enlarged schematic diagram of the tensile testing device according to the above embodiments of this application is shown.

[0044] Figure 5 A perspective view of the tensile testing device according to an embodiment of this application is shown.

[0045] Figure 6 An exploded schematic diagram of the tensile testing device according to an embodiment of this application is shown.

[0046] Figure 7 A cross-sectional schematic diagram of the tensile testing device according to the embodiment of this application is shown.

[0047] Figure 8 and Figure 9 A schematic diagram of the state of the tensile testing device according to the embodiment of this application is shown.

[0048] Figure 10 and Figure 11 This is a schematic flowchart of a tensile testing method according to an embodiment of this application. Detailed Implementation

[0049] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0050] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying 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, the above terms should not be construed as limiting this invention.

[0051] In this invention, the term "a" in the claims and specification should be understood as "one or more," that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple. Unless explicitly indicated in the disclosure of this invention that the number of the element is only one, the term "a" should not be construed as unique or single, and the term "a" should not be construed as a limitation on the quantity.

[0052] In the description of this invention, it should be understood that terms such as "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, terms such as "connected" or "linked" should be interpreted broadly. For example, it can refer to a fixed connection, a detachable connection, or an integral connection; it can refer to a mechanical connection or an electrical connection; it can refer to a direct connection or an indirect connection through a medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0053] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0054] To address the problems or defects caused by the use of screw fixing in existing automated fuel cell stacking devices, such as... Figure 1 and Figure 2 As shown, this application provides a production line equipment for assembling fuel cell stacks, which can first stack multiple fuel cell cells 801 into a fuel cell stack 800 at the stacking station by the stacking device 2; then transport the stacked fuel cell stack 800 to the bundling station by the conveying device 3; finally, after the bundling device 4 applies pressure to the fuel cell stack 800 to compress the multiple fuel cell cells 801, the bundling element 70 tightly bundles the fuel cell stack 800 together, so that the various parts of the fuel cell stack 800 are subjected to uniform force.

[0055] However, since the binding element 70 is typically implemented as a long strap, wire rope, or wire tape, it is usually wound on a reel 5 for use. Therefore, when using the binding element 70 to tightly bind the fuel cell stack 800, it is necessary to first manually rotate the reel forward to partially release the binding element 70 to wrap around the fuel cell stack 800, and then manually rotate the reel in the opposite direction to wind the binding element 70 to tighten it and secure the fuel cell stack 800. However, this manual method of rotating the reel 5 in the opposite direction to tighten the binding element 70 requires a large amount of labor, increasing labor costs. Furthermore, due to limited manpower, it is difficult to tighten the binding element 70 to meet the requirements of binding the fuel cell stack 800. In particular, the binding element 70 is typically made of metal or alloy materials. Preferably, the binding element 70 is made of a metal or alloy material with a yield strength of not less than 206 MPa, which makes the binding element 70 more difficult to be tightened manually, and easily causes the fuel cell stack 800 to be unable to be tightly bound together by the binding element 70.

[0056] To increase the tension force on the binding element 70, such as Figure 1 and Figure 2 As shown, this application allows the reel 5 to be directly mounted to the drive device 6, so that the drive device 6 can rotate the reel in the opposite direction to wind up the binding element 70, thereby tightening the binding element 70 to meet the binding requirements of the fuel cell stack 800. Specifically, to ensure that the binding force on the fuel cell stack 800 remains consistent and uniform at different binding positions, it is necessary to ensure that the tension on all binding elements 70 remains consistent when binding the fuel cell stack 800 at different binding positions. Furthermore, since the reel is rotated in the opposite direction by the drive device to tighten the binding element 70, it is also necessary to avoid the tension on the binding element 70 being too large and damaging the fuel cell stack 800, or too small and unable to tightly bind the fuel cell stack 800. Therefore, this application requires the detection of the tension on the binding element 70. However, since the strapping element 70 is wound on the reel, and the reel 5 is driven by the drive device 6 to rotate in the opposite direction to tighten the strapping element 70, the strapping element 70 is difficult to measure directly by a tension sensor. Therefore, to solve the above problem, this application creatively proposes a tension detection device and method, which is suitable for application in the above-mentioned assembly line equipment for assembling fuel cell stacks to detect the tension on the strapping element 70.

[0057] Referring to the accompanying drawings of this invention Figures 3 to 9 A tensile force detection device according to an embodiment of the present invention is described, used for detecting the tensile force received by the binding element 70. Specifically, as Figure 3 As shown, the tension detection device 1 may include a tension-compression conversion assembly 10 and a pressure sensor 20, wherein the tension-compression conversion assembly 10 is used to convert the tension force received by the binding element 70 into pressure force, and the pressure sensor 20 is used to measure the magnitude of the pressure force converted by the tension-compression conversion assembly 10, so as to obtain the magnitude of the tension force received by the binding element 70.

[0058] More specifically, such as Figure 4As shown, the tension-compression conversion assembly 10 may include a first limiting mechanism 11, a second limiting mechanism 12, and a pressure-bearing mechanism 13. The first limiting mechanism 11 restricts the binding element 70 from passing through the first limiting position 110, and the second limiting mechanism 12 restricts the binding element 70 from passing through the second limiting position 120. The pressure-bearing mechanism 13 is correspondingly disposed between the first limiting mechanism 11 and the second limiting mechanism 12, and the pressure-bearing mechanism 13 guides the binding element from passing through the pressure-bearing position 130. The first limiting position 110, the second limiting position 120, and the pressure-bearing position 130 are arranged in a triangle to cause the binding element 70, which passes through the first limiting position 110, the pressure-bearing position 130, and the second limiting position 120 in sequence, to bend at the pressure-bearing position 130 to apply pressure to the pressure-bearing mechanism 13, so that the tension on the binding element 70 is converted into the pressure on the pressure-bearing mechanism 13. Meanwhile, the pressure sensor 20 is correspondingly disposed on the pressure-bearing mechanism 13 to measure the pressure on the pressure-bearing mechanism 13, and then to determine the tension on the binding element 70 based on the pressure on the pressure-bearing mechanism 13.

[0059] It is worth noting that when the reel is rotated in the opposite direction by the drive device to tighten the strapping element 70, the strapping element 70 passes through the first limiting position 110, the pressure-bearing position 130, and the second limiting position 120 in sequence, bending into a V-shape at the pressure-bearing position 130. At this time, the tension on the strapping element 70 from the pressure-bearing position 130 to the first limiting position 110 and the tension on the strapping element 70 from the pressure-bearing position 130 to the second limiting position 120 will form a resultant force at the pressure-bearing position 130, thus applying pressure to the pressure-bearing mechanism 13. Therefore, by analyzing the force at the pressure-bearing position 130, the magnitude of the tension on the strapping element 70 can be calculated based on the magnitude of the pressure on the pressure-bearing mechanism 13, thereby achieving the purpose of detecting the tension of the strapping element 70.

[0060] Preferably, the pressure on the pressure-bearing mechanism 13 is exactly equal to the tension on the binding element 70, so as to eliminate the step of calculating the tension on the binding element 70 based on the pressure on the pressure-bearing mechanism 13.

[0061] More preferably, the distance between the first limiting position 110 and the pressure-bearing position 130 is equal to the distance between the second limiting position 120 and the pressure-bearing position 130, such that the first limiting position 110, the second limiting position 120 and the pressure-bearing position 130 are arranged in an isosceles triangle, to ensure that the extension length of the binding element 70 between the first limiting position 110 and the pressure-bearing position 130 is equal to the extension length of the binding element 70 between the second limiting position 120 and the pressure-bearing position 130, which facilitates the simplification of the assembly of the tensile force detection device 1.

[0062] According to the above embodiments of this application, as Figures 3 to 5 As shown, the tensile testing device 1 may further include a testing frame 30, wherein the tensile-compression conversion component 10 and the pressure sensor 20 are correspondingly mounted on the testing frame 30 to form an independent device with tensile testing function, facilitating the installation of the tensile testing device 1 at an appropriate position in the assembly line equipment for assembling fuel cell stacks as needed. Of course, in other examples of this application, the tensile testing device 1 may not include the testing frame 30, but rather the tensile-compression conversion component 10 and the pressure sensor 20 may be directly and correspondingly positioned at an appropriate position in the assembly line equipment for assembling fuel cell stacks, still capable of detecting the tensile force experienced by the binding element 70.

[0063] For example, such as Figures 3 to 7 As shown, the first limiting mechanism 11 of the tension-compression conversion assembly 10 may include a first limiting wheel 111, wherein the first limiting wheel 111 is correspondingly installed on the detection frame 30 to define the first limiting position 110 by the outer periphery of the first limiting wheel 111, such that the binding element 70 is tangent to the outer periphery of the first limiting wheel 111 at the first limiting position 110.

[0064] Preferably, the first limiting wheel 111 is implemented as a first fixed pulley 1110 mounted on the detection frame 30 to reduce the friction between the binding element 70 and the first limiting wheel 111, thereby improving the tensile force detection accuracy of the tensile force detection device 1. Of course, in other examples of this application, the first limiting wheel 111 can also be directly and rotatably mounted on the detection frame 30 to form a rotating wheel, which can still reduce the friction between the binding element 70 and the first limiting wheel 111.

[0065] Similarly, the second limiting mechanism 12 of the tension-compression conversion assembly 10 may include a second limiting wheel 121, wherein the second limiting wheel 121 is correspondingly installed on the detection frame 30 to define the second limiting position 120 by the outer periphery of the second limiting wheel 121, such that the binding element 70 is tangent to the outer periphery of the second limiting wheel 121 at the second limiting position 120.

[0066] Preferably, the second limiting wheel 121 is implemented as a second fixed pulley 1210 mounted on the detection frame 30 to reduce the friction between the binding element 70 and the second limiting wheel 121, which helps to further improve the tensile force detection accuracy of the tensile force detection device 1. Of course, in other examples of this application, the second limiting wheel 121 can also be directly and rotatably mounted on the detection frame 30 to form a rotating wheel, which can still reduce the friction between the binding element 70 and the second limiting wheel 121.

[0067] like Figure 6 and Figure 7 As shown, the first limiting mechanism 11 of the tension-compression conversion assembly 10 of this application may further include a first guide wheel 112, wherein the first guide wheel 112 and the first limiting wheel 111 are spaced apart to form a first guide channel 1120 between the first guide wheel 112 and the first limiting wheel 111, for guiding the binding element 70 passing through the first guide channel 1120 to contact the outer periphery of the first limiting wheel 111 to define the first limiting position 110.

[0068] Similarly, the second limiting mechanism 12 of the tension-compression conversion assembly 10 may further include a second guide wheel 122, wherein the second guide wheel 122 and the second limiting wheel 121 are arranged at intervals to form a second guide channel 1220 between the second guide wheel 122 and the second limiting wheel 121, for guiding the binding element 70 passing through the second guide channel 1220 to contact the outer periphery of the second limiting wheel 121 to define the second limiting position 120.

[0069] Preferably, the height of the first guide channel 1120 is slightly greater than the thickness of the binding element 70, so that while guiding the binding element 70 to contact the outer periphery of the first limiting wheel 111 to define the first limiting position 110, the binding element 70 can also be squeezed so that the binding element 70 remains flat after passing through the first guide channel 1120, thereby ensuring the normal operation of the tension detection device 1.

[0070] Similarly, the height of the second guide channel 1220 is slightly greater than the thickness of the binding element 70, so that while guiding the binding element 70 to contact the outer periphery of the second limiting wheel 121 to define the second limiting position 120, the binding element 70 after passing through the second guide channel 1220 can also remain flat to ensure the normal operation of the tension detection device 1.

[0071] More preferably, the first guide wheel 112 is correspondingly disposed on the side of the first limiting wheel 111 away from the pressure-bearing position 130, such that the first limiting position 110 is located between the first guide channel 1120 and the pressure-bearing position 130, thereby ensuring that the binding element 70 passing through the first guide channel 1120 can contact the outer periphery of the first limiting wheel 111 to define the first limiting position 110. The second guide wheel 122 is correspondingly disposed on the side of the second limiting wheel 121 away from the pressure-bearing position 130, such that the second limiting position 120 is located between the second guide channel 1220 and the pressure-bearing position 130, thereby ensuring that the binding element 70 passing through the second guide channel 1220 can contact the outer periphery of the second limiting wheel 121 to define the second limiting position 120.

[0072] For example, the first guide wheel 112 and the second guide wheel 122 can be implemented as wheels rotatably mounted on the detection frame 30, or they can be implemented as pulleys mounted on the detection frame 30, as long as they can guide the binding element 70 to contact the first limiting wheel 111 and the second limiting wheel 121 respectively.

[0073] like Figure 6 and Figure 7 As shown, the first limiting mechanism 11 of the tension-compression conversion assembly 10 of the tension detection device 1 of this application may further include a first guide wheel 113, wherein the first guide wheel 113 is correspondingly arranged to guide the direction of the binding element 70 passing through the first guide channel 1120.

[0074] Similarly, the second limiting mechanism 12 of the tension-compression conversion assembly 10 of the tension detection device 1 may further include a second guide wheel 123, wherein the second guide wheel 123 is correspondingly arranged to guide the direction of the binding element 70 passing through the second guide channel 1220.

[0075] For example, the first limiting wheel 111, the first guide wheel 112 and the first guide wheel 113 are arranged in a triangle, and the first guide wheel 112 is located between the first limiting wheel 111 and the first guide wheel 113, so as to guide the binding element 70 to contact the outer periphery of the first limiting wheel 111 through the first guide channel 1120 to define the first limiting position 110.

[0076] Similarly, the second limiting wheel 121, the second guide wheel 122 and the second guide wheel 123 are arranged in a triangle, and the second guide wheel 122 is located between the second limiting wheel 121 and the second guide wheel 123, so as to guide the binding element 70 to contact the outer periphery of the second limiting wheel 121 through the second guide channel 1220 to define the second limiting position 120.

[0077] It is worth noting that the first guide wheel 113 may be implemented as a wheel rotatably mounted on the detection frame 30, and the second guide wheel 123 may be implemented as a pulley mounted on the detection frame 30, as long as it can guide the direction of the binding element 70 as needed.

[0078] In addition, such as Figures 6 to 9 As shown, with the use of the strapping element 70, the strapping element 70 on the reel will gradually decrease in size, causing the direction of the strapping element 70 between the first limiting mechanism 11 and the reel to change accordingly. In order to match the change in the direction of the strapping element 70 and avoid the strapping element 70 from bending significantly at the first guide wheel 113 of the first limiting mechanism 11, the first limiting mechanism 11 of the tension-compression conversion assembly 10 of the tension detection device 1 of this application may further include a guide frame 114, wherein the guide frame 114 is rotatably mounted on the detection frame 30 with the rotation axis of the first fixed pulley 1110 as the axis, and the first guide wheel 112 and the first guide wheel 113 of the first limiting mechanism 11 are rotatably mounted on the guide frame 114. In this way, as the binding element 70 on the reel gradually decreases, the binding element 70 will pull the first guide wheel 112 and the first guide wheel 113 to rotate together with the guide frame 114 around the axis of the first fixed pulley 1110, preventing the binding element 70 from bending too much at the first guide wheel 113 of the first limiting mechanism 11.

[0079] It is worth noting that although the first guide wheel 112 rotates with the guide frame 114, causing the position of the first guide wheel 112 relative to the first limit wheel 111 to change, since the first guide wheel 112 rotates around the axis of the first fixed pulley 1110, the gap between the first guide wheel 112 and the first fixed pulley 1110 remains unchanged. In other words, the height of the first guide channel 1120 remains unchanged, and it can still play the role of flattening the binding element 70.

[0080] According to the above embodiments of this application, as Figures 4 to 9 As shown, the pressure-bearing mechanism 13 of the tension-compression conversion assembly 10 of the tension detection device 1 may include a pressure-bearing base 131 and a pressure-bearing wheel 132. The pressure-bearing base 131 is slidably disposed on the detection frame 30, and the pressure-bearing wheel 132 is correspondingly disposed on the pressure-bearing base 131. The pressure sensor 20 is correspondingly disposed on the detection frame 30, and the pressure-bearing base 131 is located between the pressure sensor 20 and the pressure-bearing wheel 132, so that the pressure-bearing position 130 is defined by the outer periphery of the pressure-bearing wheel 132, and the center position of the binding element 70 in contact with the outer periphery of the pressure-bearing wheel 132 is the pressure-bearing position 130. Thus, when the binding element 70 is subjected to tension to be tightened, the binding element 70 will apply pressure to the pressure roller 132 at the pressure bearing position 130, and transmit the pressure received by the pressure roller 132 to the pressure sensor 20 through the pressure bearing base 131, so that the pressure sensor 20 can detect and solve the tension received by the binding element 70.

[0081] Preferably, such as Figure 7 As shown, the pressure-bearing base 131 has a pressure-bearing end 1311 and a measuring end 1312, wherein the pressure sensor 20 is correspondingly disposed on the measuring end 1312 of the pressure-bearing base 131, and the pressure-bearing wheel 132 is rotatably disposed on the pressure-bearing end 1311 of the pressure-bearing base 131, which helps to improve the detection accuracy of the tensile force detection device 1.

[0082] For example, such as Figure 7As shown, the pressure-bearing base 131 further has a rolling groove 1313 disposed on the pressure-bearing end 1311, wherein the pressure-bearing wheel 132 can be implemented as a roller 1320, and the roller 1320 is partially exposed and placed in the rolling groove 1313 of the pressure-bearing base 131 to roll within the rolling groove 1313. Of course, in other examples of this application, the pressure-bearing wheel 132 can also be implemented as a rotating wheel, wherein the rotating wheel is directly and rotatably mounted on the pressure-bearing end 1311 of the pressure-bearing base 131.

[0083] Preferably, such as Figure 6 and Figure 7 As shown, the pressure-bearing mechanism 13 may further include a plurality of balls 133, wherein the plurality of balls 133 are rotatably disposed in the rolling groove 1313 and located between the inner wall of the rolling groove 1313 and the roller 1320, so as to significantly reduce the friction between the roller 1320 and the rolling groove 1313, which helps to ensure that the binding element 70 moves smoothly in the tensile testing device 1, and further improves the detection accuracy of the tensile testing device 1.

[0084] More preferably, the pressure-bearing base 131 of the pressure-bearing mechanism 13 further includes a limiting cover 1314 with an opening, wherein the limiting cover 1314 is fitted over the rolling groove 1313 to partially cover the rolling groove 1313 and restrict the position of the plurality of balls 133, and a portion of the roller 1320 is exposed from the opening of the limiting cover 1314, so as to restrict the position of the plurality of balls 133 while ensuring that a portion of the roller 1320 is exposed outside the rolling groove 1313, so as to prevent the balls 133 from dislodging from the rolling groove 1313. For example, the limiting cover 1314 of the pressure-bearing base 131 may have a U-shaped structure.

[0085] Most preferably, the opening size of the limiting cover 1314 of the pressure-bearing base 131 is smaller than the diameter of the roller 1320, so as to restrict the position of the roller 1320 and prevent the roller 1320 from falling out of the rolling groove 1313, so that the tension detection device 1 can be arranged in different positions, for example, the opening of the rolling groove 1313 can face downward, without worrying about the roller 1320 falling out of the rolling groove 1313.

[0086] Preferably, such as Figures 6 to 9As shown, the detection frame 30 may have a sliding groove 300, wherein the sliding groove 300 extends along the direction in which the binding element 70 applies pressure to the pressure roller 132, and the pressure base 131 is slidably disposed in the sliding groove 300 of the detection frame 30 to slide along the sliding groove 300.

[0087] It is worth mentioning that the pressure sensor 20 of this application may include a sensitive element 21 and a conversion element 22, wherein the sensitive element 21 is protrudingly disposed on the conversion element 22, and the sensitive element 21 contacts the measuring end 1312 of the pressure-bearing base 131 for sensing the strain of the pressure-bearing base 131, wherein the conversion element 22 is used to convert the strain sensed by the sensitive element 21 into an electrical signal to output a corresponding pressure value.

[0088] Preferably, the pressure sensor 20 may further include a processing module, wherein the processing module is used to calculate the tensile force value of the binding element 70 based on the electrical signal converted by the conversion element 22.

[0089] More preferably, the pressure-bearing base 131 may further have a receiving groove 1315 disposed on the measuring end 1312 for contactively receiving the head of the sensitive element 21 of the pressure sensor 20, and exposing the root of the sensitive element 21 outside the receiving groove 1315, so as to ensure that the pressure-bearing base 131 can protect the sensitive element 21, while also reserving a certain sliding space for the pressure-bearing base 131 to undergo strain, so that the sensitive element 21 can sense the strain of the pressure-bearing base 131.

[0090] According to another aspect of this application, such as Figure 10 and Figure 11 As shown, this application further provides a tensile force detection method for detecting the tensile force experienced by a binding element. Specifically, as... Figure 10 As shown, the tensile force detection method may include the following steps:

[0091] S100: Converts the tensile force on a binding element into a compressive force; and

[0092] S200: Measure the magnitude of the converted pressure to determine the magnitude of the tension force on the binding element.

[0093] It is worth noting that, in the above embodiments of this application, such as Figure 11 As shown, step S100 of the tensile force detection method may include the following steps:

[0094] S110: Restrict the strapping element from passing through a first limiting position;

[0095] S120: Restricts the binding element from passing through a second limiting position; and

[0096] S130: Guide the binding element through a pressure-bearing position, wherein the first limiting position, the second limiting position, and the pressure-bearing position are arranged in a triangle to cause the binding element, which passes through the first limiting position, the pressure-bearing position, and the second limiting position in sequence, to bend at the pressure-bearing position to convert tension into pressure.

[0097] Those skilled in the art will understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the scope of the invention. The objectives of the present invention have been fully and effectively achieved.

[0098] The functions and structural principles of the present invention have been shown and explained in the embodiments. Without departing from the stated principles, the implementation of the present invention may be modified or altered in any way.

Claims

1. A tensile force detection device for detecting the tensile force on a binding element, characterized in that, The tensile testing device includes: A detection framework; A tension-compression conversion assembly, wherein the tension-compression conversion assembly is used to convert the tension force received by the binding element into the compression force, wherein the tension-compression conversion assembly includes a first limiting mechanism for restricting the binding element from passing through a first limiting position, wherein the first limiting mechanism includes a first limiting wheel, a first guide wheel, a first guide wheel, and a guide frame; and A pressure sensor is provided, wherein the tension-compression conversion assembly and the pressure sensor are correspondingly disposed on the detection frame for measuring the pressure converted by the tension-compression conversion assembly and determining the tension force on the strapping element. A first limiting wheel is correspondingly mounted on the detection frame to define a first limiting position via the outer periphery of the first limiting wheel. A first guide wheel is spaced apart from the first limiting wheel to form a first guide channel between the first guide wheel and the first limiting wheel, guiding the strapping element passing through the first guide channel to contact the outer periphery of the first limiting wheel to define the first limiting position. A first guide wheel is correspondingly disposed to guide the direction of the strapping element passing through the first guide channel. The first limiting wheel is a first fixed pulley mounted on the detection frame. A guide frame is rotatably mounted on the detection frame about the axis of rotation of the first fixed pulley, and the first guide wheel and the first guide wheel are rotatably mounted on the guide frame.

2. The tensile force testing device as described in claim 1, wherein, The tension-compression conversion assembly includes a second limiting mechanism for restricting the strapping element from passing through a second limiting position, and a pressure-bearing mechanism for guiding the strapping element from passing through a pressure-bearing position. The pressure-bearing mechanism is correspondingly disposed between the first limiting mechanism and the second limiting mechanism, and the first limiting position, the second limiting position, and the pressure-bearing position are arranged in a triangle to cause the strapping element to bend at the pressure-bearing position to apply pressure to the pressure-bearing mechanism, so that the tension force on the strapping element is converted into the pressure force on the pressure-bearing mechanism. The pressure sensor is correspondingly disposed on the pressure-bearing mechanism to measure the magnitude of the pressure force on the pressure-bearing mechanism.

3. The tensile testing device as described in claim 1, wherein the height of the first guide channel is greater than the thickness of the binding element.

4. The tensile force testing device as described in claim 2, wherein, The second limiting mechanism includes a second limiting wheel, and the second limiting wheel is correspondingly mounted on the detection frame to define the second limiting position by the outer periphery of the second limiting wheel.

5. The tensile force testing device as described in claim 4, wherein, The second limiting mechanism further includes a second guide wheel, and the second guide wheel and the second limiting wheel are spaced apart to form a second guide channel between the second guide wheel and the second limiting wheel, for guiding the binding element passing through the second guide channel to contact the outer periphery of the second limiting wheel to define the second limiting position.

6. The tensile force testing device as described in claim 5, wherein, The height of the second guide channel is equal to the thickness of the binding element.

7. The tensile force testing device as described in claim 6, wherein, The second limiting mechanism further includes a second guide wheel, which is correspondingly provided to guide the direction of the binding element passing through the second guide channel.

8. The tensile force testing device as described in claim 7, wherein, The first limiting wheel, the first guide wheel, and the first guide wheel are arranged in a triangular configuration, with the first guide wheel located between the first limiting wheel and the first guide wheel; wherein the second limiting wheel, the second guide wheel, and the second guide wheel are arranged in a triangular configuration, with the second guide wheel located between the second limiting wheel and the second guide wheel.

9. The tensile force testing device as described in claim 8, wherein, The second limiting wheel is a second fixed pulley installed on the detection frame.

10. The tensile force detection device as described in claim 9, wherein, The second guide wheel and the second guide wheel are rotatably mounted on the detection frame.

11. The tensile force detection device as described in any one of claims 4 to 10, wherein, The pressure-bearing mechanism of the tension-compression conversion assembly includes a pressure-bearing base and a pressure-bearing wheel, wherein the pressure-bearing base is slidably disposed on the detection frame, and the pressure-bearing wheel is correspondingly disposed on the pressure-bearing base, wherein the pressure sensor is correspondingly disposed on the pressure-bearing base, and the pressure-bearing base is located between the pressure sensor and the pressure-bearing wheel to define the pressure-bearing position by the outer periphery of the pressure-bearing wheel.

12. The tensile force detection device as described in claim 11, wherein, The pressure-bearing base has a pressure-bearing end and a measuring end, wherein the pressure sensor is correspondingly disposed on the measuring end of the pressure-bearing base, and the pressure-bearing wheel is rotatably disposed on the pressure-bearing end of the pressure-bearing base.

13. The tensile force detection device as described in claim 12, wherein, The pressure-bearing base further has a rolling groove disposed at the pressure-bearing end, wherein the pressure-bearing wheel is a roller, and the roller is partially exposed and placed in the rolling groove of the pressure-bearing base to roll within the rolling groove.

14. The tensile force detection device as described in claim 13, wherein, The pressure-bearing mechanism further includes a plurality of balls, wherein the plurality of balls are rotatably disposed in the rolling groove and located between the inner wall of the rolling groove and the roller.

15. The tensile force detection device as described in claim 14, wherein, The pressure-bearing base further includes a limiting cover with an opening, wherein the limiting cover is fitted onto the rolling groove to partially cover the rolling groove and restrict the position of the plurality of balls, and a portion of the roller is exposed from the opening of the limiting cover.

16. The tensile force testing device as described in claim 15, wherein, The detection frame has a sliding groove extending along the direction in which the binding element applies pressure to the pressure roller, and the pressure base is slidably disposed in the sliding groove to slide along the sliding groove.

17. The tensile force detection device as described in claim 16, wherein, The pressure sensor includes a sensitive element and a conversion element, wherein the sensitive element is protrudingly disposed on the conversion element and contacts the measuring end of the pressure-bearing base for sensing the strain of the pressure-bearing base, wherein the conversion element is used to convert the strain sensed by the sensitive element into a corresponding electrical signal to output a corresponding pressure value; wherein the pressure-bearing base further has a receiving groove disposed on the measuring end, and the receiving groove is used to receive the head of the sensitive element of the pressure sensor in contact, such that the tail of the sensitive element is exposed outside the receiving groove.

18. The tensile force testing device as described in claim 2, wherein, The distance between the first limiting position and the pressure-bearing position is equal to the distance between the second limiting position and the pressure-bearing position.

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