A measuring device for measuring diaphragm warpage and a method for measuring diaphragm warpage

Abstract

The application discloses a measuring device and a measuring method for measuring diaphragm warping degree, the measuring device comprises a seat body assembly, a crossbeam assembly, a clamping assembly and a suspension assembly, the seat body assembly comprises a base and a vertical rod which are connected with each other; the crossbeam assembly is connected with the vertical rod; the clamping assembly is connected with the crossbeam assembly and is used for clamping a first end of the diaphragm; and the suspension assembly is used for clamping a second end of the diaphragm. The measuring device and the measuring method provided by the application provide an effective means for quantifying the non-standard diaphragm warping degree and provide data support for the standardization of diaphragm processing.

Description

Technical Field

[0001] This invention relates to the field of measurement technology, and in particular to a measuring device and a method for measuring diaphragm warpage. Background Technology

[0002] The separator is an important component of the battery. Its raw materials are usually supplied in the form of separator tape. During the separator processing, there is a risk of warping due to uneven heating and process settings. The dimensional error caused by small warping can be ignored after the separator tape is cut, but excessive warping may cause risks such as winding in the production machine. In other words, the warping of the separator is an important parameter that needs to be monitored in industrial production.

[0003] However, because the diaphragm materials, widths, thicknesses, and other data used in different production lines are all different, it is difficult to formulate a fixed standard for warpage. The control of diaphragm warpage often relies on the experience and judgment of operators. Summary of the Invention

[0004] One object of the present invention is to provide a measuring device and a method for measuring the warpage of a diaphragm, which aims to solve the technical problem that the degree of warpage is difficult to quantify during the processing of the diaphragm.

[0005] To achieve the above objectives, the present invention provides a measuring device for measuring the warpage of a diaphragm. The diaphragm is defined to have a first end and a second end along its length direction. The first end has a first left test point and a first right test point along its width direction. The second end has a second left test point and a second right test point along its width direction. The line connecting the first left test point and the second left test point is in the same direction as the length direction of the diaphragm, and the line connecting the first right test point and the second right test point is also in the same direction as the length direction of the diaphragm. The measuring device includes a base assembly, a crossbeam assembly, a clamping assembly, and a suspension assembly.

[0006] Specifically, the seat assembly includes an interconnected base and upright; a crossbeam assembly connected to the upright; a clamping assembly connected to the crossbeam assembly, the clamping assembly being used to clamp the first end of the diaphragm; and a suspension assembly being used to clamp the second end of the diaphragm. When the clamping assembly clamps the first left test point and the suspension assembly clamps the second left test point, the distance between the first and second left test points is L1. When the clamping assembly clamps the first right test point and the suspension assembly clamps the second right test point, the distance between the first and second right test points is L2.

[0007] In some embodiments, the crossbeam assembly includes a crossbar, a first ring sleeve, and a first bolt. The first ring sleeve is disposed at one end of the crossbar, and the upright is inserted into the first ring sleeve and slidably connected to the first ring sleeve. A first threaded hole is provided on the first ring sleeve, and the first bolt passes through the first threaded hole and abuts against the upright, for fixing the relative position of the first ring sleeve and the upright.

[0008] In some embodiments, the base assembly further includes a first limiting member, which protrudes from the end of the upright away from the base and is used to restrict the movement of the first ring between the first limiting member and the base.

[0009] In some embodiments, the clamping assembly includes a first jaw and a connecting rod, one end of the connecting rod being connected to a beam assembly and the other end of the connecting rod being connected to the first jaw, the first jaw being used to clamp a first end of the diaphragm.

[0010] In some embodiments, the clamping assembly further includes a second ring sleeve and a second bolt. The second ring sleeve is connected to the end of the connecting rod away from the first gripper. The connecting rod is slidably connected to the crossbar through the second ring sleeve. The second ring sleeve has a second threaded hole. The second bolt passes through the second threaded hole and abuts against the crossbar to fix the relative position of the second ring sleeve and the crossbar. The crossbeam assembly further includes a second limiting member. The second limiting member protrudes from the end of the crossbar away from the first ring sleeve to limit the movement of the second ring sleeve between the second limiting member and the first ring sleeve.

[0011] In some embodiments, the first gripper includes a first block, a second block, and a first connecting bolt. The first block and the second block are used to clamp the first end of the diaphragm. The first block is connected to a connecting rod. A first hole is formed on the first block along the length direction of the diaphragm, and a second hole is formed on the second block along the length direction of the diaphragm. The first connecting bolt passes through the first hole and the second hole to fix the first block and the second block.

[0012] In some embodiments, the suspension assembly includes a second gripper, a ring, and a hanger. The ring is connected to the second gripper, and the hanger is attached to the ring. The second gripper is used to hold the second end of the diaphragm. The second gripper includes a third block, a fourth block, and a second connecting bolt. The third block and the fourth block are used to hold the second end of the diaphragm. The third block is connected to the ring. A third hole is formed on the third block along the length of the diaphragm, and a fourth hole is formed on the fourth block along the length of the diaphragm. The second connecting bolt passes through the third hole and the fourth hole to fix the third block and the fourth block.

[0013] In some embodiments, the clamping assembly further includes a first clamping rod, and a first gripper clamps the first clamping rod; the first clamping rod includes a first rod body, a second rod body, and a first pad, the first rod body and the second rod body are used to clamp the first end of the diaphragm, the first pad is placed on the side of the first rod body facing the second rod body, and the first pad is placed on the side of the second rod body facing the first rod body.

[0014] In some embodiments, the suspension assembly further includes a second clamping rod, and a second clamping claw clamps the second clamping rod; the second clamping rod includes a third rod body, a fourth rod body, and a second pad, the third rod body and the fourth rod body are used to clamp the second end of the diaphragm, and the second pad is placed on the side of the third rod body facing the fourth rod body and the fourth rod body facing the third rod body.

[0015] To achieve the above objectives, another solution provided by the present invention is: a method for measuring diaphragm warpage, wherein the measurement method is performed using any of the measuring devices described above, and the measurement method includes the following steps:

[0016] Cut a section of the diaphragm to be measured; clamp the first left test point using the clamping assembly and the second left test point using the suspension assembly; measure the distance L1 between the first left test point and the second left test point; clamp the first right test point using the clamping assembly and the second right test point using the suspension assembly; measure the distance L2 between the first right test point and the second right test point; calculate the length difference between L1 and L2.

[0017] The beneficial effects of this invention are as follows: The measuring device for measuring the warpage of a diaphragm provided by this invention can quantify the degree of warpage of the diaphragm. Specifically, a fixed length of diaphragm is periodically inspected on the production line. Since the length, width, thickness and material of the diaphragm are constant at this time, the absolute value of the measured length difference L1-L2 is positively correlated with the degree of warpage of the diaphragm.

[0018] The measuring device and method provided by this invention offer an effective means for quantifying the non-scalar quantity of diaphragm warpage, and provide data support for the standardization of diaphragm processing. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the overall structure of the testing device provided in the embodiment of the present invention; Figure 2 This is a front view of the testing apparatus provided in an embodiment of the present invention; Figure 3 yes Figure 1 A magnified view of a portion of region A in the middle; Figure 4 yes Figure 1 A magnified view of a portion of region B in the middle; Figure 5It is along Figure 4 Schematic diagram of the cross section of the CC line; Figure 6 yes Figure 1 A magnified view of a portion of region D in the middle; Figure 7 yes Figure 1 A magnified view of a portion of region E in the middle; Figure 8 It is along Figure 7 A cross-sectional view of the FF line.

[0021] Explanation of icon numbers: 00. Diaphragm; 01. First end; 011. First left test point; 012. First right test point; 02. Second end; 021. Second left test point; 022. Second right test point; 10. Seat assembly; 11. Base; 12. Upright pole; 13. First limiting member; 20. Crossbeam assembly; 21. Crossbar; 22. First ring sleeve; 221. First threaded hole; 23. First bolt; 24. Second limiting member; 30. Clamping assembly; 31. First gripper; 311. First block; 3111. First hole; 312. Second block; 3121. Second hole; 313, First connecting bolt; 32, Connecting rod; 33, Second ring sleeve; 331, Second threaded hole; 34, Second bolt; 35, First clamping rod; 351, First rod body; 352, Second rod body; 353, First washer; 40, Suspension assembly; 41, Second gripper; 411, Third block; 4111, Third hole; 412, Fourth block; 4121, Fourth hole; 413, Second connecting bolt; 42, Lifting ring; 43, Hanging weight; 44, Second clamping rod; 441, Third rod body; 442, Fourth rod body; 443, Second washer. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figures 1 to 2 As shown, Figure 1 This is a schematic diagram of the overall structure of the testing device provided in the embodiment of the present invention; Figure 2 This is a front view of the testing device provided in an embodiment of the present invention.

[0024] To address the technical problem of difficulty in quantifying warpage during diaphragm manufacturing, this invention discloses a measuring device for measuring the warpage of diaphragms.

[0025] The diaphragm 00 is defined to have a first end 01 and a second end 02 in its length direction. The first end 01 has a first left test point 011 and a first right test point 012 in the width direction of the diaphragm 00. The second end 02 has a second left test point 021 and a second right test point 022 in the width direction of the diaphragm 00. The line connecting the first left test point 011 and the second left test point 021 is in the same direction as the length direction of the diaphragm 00. The line connecting the first right test point 012 and the second right test point 022 is in the same direction as the length direction of the diaphragm 00. It should be noted that the definition of diaphragm 00 here is not intended to limit the application scope of the measuring device of the present invention. In fact, any segment of diaphragm 00 cut from any material, thickness and width will naturally have features such as first end 01, second end 02 and first left test point 011, second left test point 021, first right test point 012 and second right test point 022. The definition here is only for illustrative purposes. All subsequent embodiments will follow the above definition and will not be described again.

[0026] The measuring device includes a base assembly 10, a crossbeam assembly 20, a clamping assembly 30, and a suspension assembly 40. The base assembly 10 includes a base 11 and a vertical rod 12 connected to each other. The crossbeam assembly 20 is connected to the vertical rod 12. The clamping assembly 30 is connected to the crossbeam assembly 20 and is used to clamp the first end 01 of the diaphragm 00. The suspension assembly 40 is used to clamp the second end 02 of the diaphragm 00. When the clamping assembly 30 clamps the first left test point 011 and the suspension assembly 40 clamps the second left test point 021, the distance between the first left test point 011 and the second left test point 021 is L1. When the clamping assembly 30 clamps the first right test point 012 and the suspension assembly 40 clamps the second right test point 022, the distance between the first right test point 012 and the second right test point 022 is L2.

[0027] To better describe the technical solution of this embodiment, the usage method and application scenarios of the testing device are described herein. The usage method of the testing device provided in this embodiment includes the following steps: Cut off the diaphragm to be tested.

[0028] The clamping assembly 30 clamps the first left test point 011 of the diaphragm 00 under test, and the suspension assembly 40 clamps the second left test point 021 of the diaphragm 00 under test. The suspension assembly 40 is suspended by the diaphragm 00, and correspondingly, the diaphragm 00 between the first left test point 011 and the second left test point 021 is straightened under the traction of the suspension assembly 40 and the clamping assembly 30. L1 is measured.

[0029] The clamping assembly 30 clamps the first right test point 012 of the diaphragm 00 under test, and the suspension assembly 40 clamps the second right test point 022 of the diaphragm 00 under test. The suspension assembly 40 is suspended by the diaphragm 00, and correspondingly, the diaphragm 00 between the first right test point 012 and the second right test point 022 is straightened under the traction of the suspension assembly 40 and the clamping assembly 30. L2 is measured.

[0030] Calculate the length difference between L1 and L2. The larger the length difference between L1 and L2, the more severe the warping of the cut diaphragm.

[0031] In the above-described usage process, the measuring device of this embodiment quantifies the degree of warpage of the diaphragm 00. The length difference between L1 and L2 is positively correlated with the amount of warpage. This provides a quantitative means for warpage control in the industrial production process of the diaphragm 00, which is beneficial to the improvement of automation.

[0032] It should be noted that, while the length difference measured using the aforementioned measuring device is indeed a non-scalar quantity and not universally applicable across the industry, on a production line where the thickness, width, and material of the diaphragm 00 are fixed, and the length of the diaphragm 00 cut in each measurement is constant, the relative change in the length difference between L1 and L2 is sufficient to guide production. For example, before starting the processing of a certain type of diaphragm 00, the warping of the diaphragm 00 can be artificially intensified by manually controlling local heating or other means until the conveying state of the diaphragm 00 shows significant disturbance. The corresponding section of the diaphragm 00 is then cut and the critical length difference is measured. In subsequent production, as long as the real-time length difference of the diaphragm 00 is measured periodically and compared with the critical length difference, the warping state of the diaphragm 00 can be quantitatively monitored.

[0033] Please refer to the following: Figure 3 As shown, Figure 3 yes Figure 1 The enlarged view of a portion of area A shows the fit between the crossbeam assembly 20 and the upright 12.

[0034] In some embodiments, the crossbeam assembly 20 includes a crossbar 21, a first ring sleeve 22, and a first bolt 23. The first ring sleeve 22 is disposed at one end of the crossbar 21, and the upright 12 is inserted into the first ring sleeve 22 and slidably connected to the first ring sleeve 22. A first threaded hole 221 is provided on the first ring sleeve 22, and the first bolt 23 passes through the first threaded hole 221 and abuts against the upright 12 to fix the relative position of the first ring sleeve 22 and the upright 12.

[0035] When the first bolt 23 is tightened and abuts against the upright 12, the first ring 22 is fixed. When the first bolt 23 is removed from the upright 12, the first ring 22 can move up and down relative to the upright 12. The above configuration allows the height of the beam assembly 20 to be adjusted according to the length of the diaphragm 00 to be measured, adapting to different measurement needs.

[0036] Furthermore, the base assembly 10 also includes a first limiting member 13, which protrudes from the end of the upright 12 away from the base 11, and is used to restrict the movement of the first ring 22 between the first limiting member 13 and the base 11.

[0037] The first limiting member 13 can be a flange surrounding the upright 12, or a through hole can be formed in the upright 12, through which the first limiting member 13 passes. The first limiting member 13 serves as a foolproof structure to prevent the crossbeam assembly 20 from being over-adjusted.

[0038] Please refer to the above as well. Figures 4 to 5 As shown, Figure 4 yes Figure 1 A magnified view of a portion of region B in the middle; Figure 5 It is along Figure 4 The cross-sectional view of the CC line shows the mating relationship between the clamping assembly 30 and the diaphragm 00.

[0039] In some embodiments, the clamping assembly 30 includes a first gripper 31 and a connecting rod 32. One end of the connecting rod 32 is connected to the crossbeam assembly 20, and the other end of the connecting rod 32 is connected to the first gripper 31. The first gripper 31 is used to clamp the first end 01 of the diaphragm 00.

[0040] The first gripper 31 facilitates the assembly of the diaphragm 00, making clamping and replacement faster.

[0041] Please refer to the above as well. Figure 6 As shown, Figure 6 yes Figure 1 The enlarged view of region D shows the connection between the clamping assembly 30 and the crossbeam assembly 20.

[0042] Furthermore, the clamping assembly 30 also includes a second ring sleeve 33 and a second bolt 34. The second ring sleeve 33 is connected to the end of the connecting rod 32 away from the first gripper 31. The connecting rod 32 is slidably connected to the crossbar 21 through the second ring sleeve 33. The second ring sleeve 33 has a second threaded hole 331. The second bolt 34 passes through the second threaded hole 331 and abuts against the crossbar 21 to fix the relative position of the second ring sleeve 33 and the crossbar 21. The crossbeam assembly 20 also includes a second limiting member 24. The second limiting member 24 protrudes from the end of the crossbar 21 away from the first ring sleeve 22 to restrict the movement of the second ring sleeve 33 between the second limiting member 24 and the first ring sleeve 22.

[0043] When the second bolt 34 is tightened and abuts against the crossbar 21, the second ring 33 is fixed. When the second bolt 34 is removed from the crossbar 21, the second ring 33 can move relative to the crossbar 21, allowing the clamping assembly 30 to move closer to or further away from the upright 12. This arrangement allows the distance between the clamping assembly 30 and the upright 12 to be adjusted according to the width of the diaphragm 00 to be measured, adapting to different measurement needs. The second limiting member 24 can be a flange surrounding the crossbar 21, or a through hole can be formed in the crossbar 21 through which the second limiting member 24 passes. The second limiting member 24 serves as a foolproof structure to prevent over-adjustment of the clamping assembly.

[0044] For example, the first gripper 31 includes a first block 311, a second block 312, and a first connecting bolt 313. The first block 311 and the second block 312 are used to clamp the first end 01 of the diaphragm 00. The first block 311 is connected to the connecting rod 32. A first hole 3111 is formed on the first block 311 along the length direction of the diaphragm 00, and a second hole 3121 is formed on the second block 312 along the length direction of the diaphragm 00. The first connecting bolt 313 passes through the first hole 3111 and the second hole 3121 to fix the first block 311 and the second block 312.

[0045] The axis of the first connecting bolt 313 is parallel to the length direction of the diaphragm 00, which ensures that the fixing of the first connecting bolt 313 to the first block 311 and the second block 312 will not affect the diaphragm 00, thus ensuring the accuracy of the measurement results.

[0046] For example, the clamping assembly 30 further includes a first clamping rod 35, and a first clamping claw 31 clamps the first clamping rod 35; the first clamping rod 35 includes a first rod body 351, a second rod body 352 and a first pad 353, the first rod body 351 and the second rod body 352 are used to clamp the first end 01 of the diaphragm 00, the first pad 353 is placed on the side of the first rod body 351 facing the second rod body 352, and the first pad 353 is placed on the side of the second rod body 352 facing the first rod body 351.

[0047] In actual production, the diaphragm 00 does not have a boundary between its first end 01 and second end 02. This is due to the edge area created by manual cutting. Under localized stress, deformation may occur, affecting measurement accuracy. The first clamping roller 35 ensures that the first end 01 of the diaphragm 00 is subjected to uniform stress, preventing unevenness in the width direction of the diaphragm 00 caused by pulling on a single measurement point. The first gasket 353 prevents damage to the surface of the diaphragm 00 during clamping. Furthermore, the thickness or number of the first gasket 353 can be adjusted according to the thickness of the diaphragm 00, making the clamping more stable.

[0048] Please refer to the following: Figures 7 to 8 As shown, Figure 7 yes Figure 1 A magnified view of a portion of region E in the middle; Figure 8 It is along Figure 7 The cross-sectional schematic diagram of the FF line shows the fitting relationship between the suspension assembly 40 and the diaphragm 00.

[0049] In some embodiments, the suspension assembly 40 includes a second gripper 41, a hanging ring 42, and a hanging bracket 43. The hanging ring 42 is connected to the second gripper 41, and the hanging bracket 43 is hung on the hanging ring 42. The second gripper is used to grip the second end 02 of the diaphragm 00. The second gripper 41 includes a third block 411, a fourth block 412, and a second connecting bolt 413. The third block 411 and the fourth block 412 are used to grip the second end 02 of the diaphragm 00. The third block 411 is connected to the hanging ring 42. A third hole 4111 is formed on the third block 411 along the length direction of the diaphragm 00, and a fourth hole 4121 is formed on the fourth block 412 along the length direction of the diaphragm 00. The second connecting bolt 413 passes through the third hole 4111 and the fourth hole 4121 to fix the third block 411 and the fourth block 412.

[0050] The design of the lifting ring 42 allows the suspension assembly 40 to be equipped with different weights of hanging weights 43 according to the actual situation of the diaphragm 00, ensuring that the diaphragm 00 can be straightened in a targeted manner without stretching its length. The axis of the second connecting bolt 413 is parallel to the length direction of the diaphragm 00, which ensures that the fixing of the second connecting bolt 413 to the third block 411 and the fourth block 412 will not affect the diaphragm 00, thus ensuring the accuracy of the measurement results.

[0051] In some embodiments, the suspension assembly 40 further includes a second clamping rod 44, and a second clamping claw 41 clamps the second clamping rod 44; the second clamping rod 44 includes a third rod body 441, a fourth rod body 442, and a second pad 443, the third rod body 441 and the fourth rod body 442 are used to clamp the second end 02 of the diaphragm 00, the second pad 443 is placed on the side of the third rod body 441 facing the fourth rod body 442, and the second pad 443 is placed on the side of the fourth rod body 442 facing the third rod body 441.

[0052] In actual production, the diaphragm 00 does not have a boundary between its first end 01 and second end 02. This is due to the edge area created by manual cutting. Under localized stress, deformation may occur, affecting measurement accuracy. The first clamping roller 35 ensures that the first end 01 of the diaphragm 00 is subjected to uniform stress, preventing unevenness in the width direction of the diaphragm 00 caused by pulling on a single measurement point. The first gasket 353 prevents damage to the surface of the diaphragm 00 during clamping. Furthermore, the thickness or number of the first gasket 353 can be adjusted according to the thickness of the diaphragm 00, making the clamping more stable.

[0053] To address the aforementioned technical problems, the present invention also discloses a method for measuring the warpage of a diaphragm. The method utilizes the measuring device disclosed in any of the above embodiments and includes the following steps: Cut a section of the diaphragm to be measured (00). The clamping assembly 30 clamps the first left test point 011, and the suspension assembly 40 clamps the second left test point 021. Measure the distance L1 between the first left test point 011 and the second left test point 021; The clamping assembly 30 clamps the first right test point 012, and the suspension assembly 40 clamps the second right test point 022; Measure the distance L2 between the first right test point 012 and the second right test point 022; calculate the length difference between L1 and L2.

[0054] The method for measuring the warpage of diaphragm 00 disclosed in this embodiment uses the above-mentioned measuring device. Therefore, the method has the technical effect of the measuring device. Specifically, it can quantify the degree of warpage of diaphragm 00, which facilitates the production line to accurately control the warpage of diaphragm 00.

[0055] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0056] It should also be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or an intervening element may be present simultaneously. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element through an intervening element. Furthermore, the descriptions involving "first," "second," etc., in this invention are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0057] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural transformations made using the contents of the specification and drawings of the present invention under the design concept of the present invention, or direct / indirect applications in other related technical fields, are included within the scope of patent protection of the present invention.

Claims

1. A measuring device for measuring the warpage of a diaphragm, wherein the diaphragm has a first end and a second end in its length direction, the first end has a first left test point and a first right test point in the width direction of the diaphragm, the second end has a second left test point and a second right test point in the width direction of the diaphragm, the line connecting the first left test point and the second left test point is in the same direction as the length direction of the diaphragm, and the line connecting the first right test point and the second right test point is in the same direction as the length direction of the diaphragm, characterized in that, The measuring device includes: The base assembly includes an interconnected base and uprights; A crossbeam assembly, which is connected to the upright; A clamping assembly is connected to the beam assembly, the clamping assembly being used to clamp the first end of the diaphragm; A suspension assembly for holding the second end of the diaphragm; Wherein, when the clamping component clamps the first left test point and the suspension component clamps the second left test point, the distance between the first left test point and the second left test point is L1; when the clamping component clamps the first right test point and the suspension component clamps the second right test point, the distance between the first right test point and the second right test point is L2.

2. The measuring device according to claim 1, characterized in that, The crossbeam assembly includes a crossbar, a first ring sleeve, and a first bolt. The first ring sleeve is disposed at one end of the crossbar, and the upright is inserted into the first ring sleeve and slidably connected to the first ring sleeve. A first threaded hole is provided on the first ring sleeve, and the first bolt passes through the first threaded hole and abuts against the upright, for fixing the relative position of the first ring sleeve and the upright.

3. The measuring device according to claim 2, characterized in that, The base assembly further includes a first limiting member, which protrudes from the end of the upright away from the base and is used to restrict the first ring from moving between the first limiting member and the base.

4. The measuring device according to claim 2, characterized in that, The clamping assembly includes a first gripper and a connecting rod. One end of the connecting rod is connected to the crossbeam assembly, and the other end of the connecting rod is connected to the first gripper. The first gripper is used to clamp the first end of the diaphragm.

5. The measuring device according to claim 4, characterized in that, The clamping assembly further includes a second ring sleeve and a second bolt. The second ring sleeve is connected to the end of the connecting rod away from the first gripper. The connecting rod is slidably connected to the crossbar via the second ring sleeve. The second ring sleeve has a second threaded hole, and the second bolt passes through the second threaded hole and abuts against the crossbar to fix the relative position of the second ring sleeve and the crossbar. The crossbeam assembly also includes a second limiting member, which protrudes from the end of the crossbar away from the first ring sleeve, and is used to restrict the movement of the second ring sleeve between the second limiting member and the first ring sleeve.

6. The measuring device according to claim 4, characterized in that, The first gripper includes a first block, a second block, and a first connecting bolt. The first block and the second block are used to clamp the first end of the diaphragm. The first block is connected to the connecting rod. A first hole is formed on the first block along the length direction of the diaphragm, and a second hole is formed on the second block along the length direction of the diaphragm. The first connecting bolt passes through the first hole and the second hole to fix the first block and the second block.

7. The measuring device according to claim 4, characterized in that, The clamping assembly further includes a first clamping rod, and the first clamping claw clamps the first clamping rod; The first clamping rod includes a first rod body, a second rod body, and a first pad. The first rod body and the second rod body are used to clamp the first end of the diaphragm. The first pad is placed on the side of the first rod body facing the second rod body, and the first pad is placed on the side of the second rod body facing the first rod body.

8. The measuring device according to claim 1, characterized in that, The suspension assembly includes a second gripper, a hanging ring, and a hanging weight. The hanging ring is connected to the second gripper, and the hanging weight is attached to the hanging ring. The second gripper is used to hold the second end of the diaphragm. The second gripper includes a third block, a fourth block, and a second connecting bolt. The third block and the fourth block are used to clamp the second end of the diaphragm. The third block is connected to the lifting ring. A third hole is formed on the third block along the length direction of the diaphragm, and a fourth hole is formed on the fourth block along the length direction of the diaphragm. The second connecting bolt passes through the third hole and the fourth hole to fix the third block and the fourth block.

9. The measuring device according to claim 8, characterized in that, The suspension assembly further includes a second clamping rod, and the second clamping claw clamps the second clamping rod; The second clamping rod includes a third rod body, a fourth rod body, and a second pad. The third rod body and the fourth rod body are used to clamp the second end of the diaphragm. The second pad is placed on the side of the third rod body facing the fourth rod body, and on the side of the fourth rod body facing the third rod body.

10. A method for measuring diaphragm warpage, wherein the method is performed using the measuring device according to any one of claims 1-9, characterized in that, The measurement method includes the following steps: Cut a section of the diaphragm to be measured; The clamping assembly is used to clamp the first left test point, and the suspension assembly is used to clamp the second left test point; Measure the distance L1 between the first left test point and the second left test point; The clamping assembly is used to clamp the first right test point, and the suspension assembly is used to clamp the second right test point; Measure the distance L2 between the first right test point and the second right test point; Calculate the length difference between L1 and L2.

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