Novel tensile membrane structure membrane surface tension tester and test method

Abstract

The invention relates to the technical field of tensile membranes, and provides a novel tensile membrane structure membrane surface tension tester which comprises a frame body, transmission frames are slidably connected to the four corners of the top side of the frame body, the bottom ends of the transmission frames are connected with the bottom side of the frame body through meshing assemblies, and two fixing clamps are arranged on the inner circumference of each transmission frame; the fixing clamp at the bottom end is fixedly connected with a transmission frame, one ends of the two fixing clamps are rotationally connected, the other ends of the two fixing clamps are connected through a clamping assembly, and the close sides of the two fixing clamps are fixedly connected with an anti-skid pad; the rear end of the limiting sleeve is connected with the rear end of the frame body through a supporting frame. Through mutual cooperation of the first transmission assembly, the second transmission assembly, the meshing assembly, the fixing clamp and the non-slip mat, a sample can be synchronously tightened and leveled, detection is carried out while the detection precision is improved, and the detection efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of tensioned membranes, in particular to a novel tensioned membrane structure membrane surface tension tester and a testing method. Background Art

[0002] In the tensile membrane structure, the membrane surface tension is directly related to the bearing capacity and morphology of the tensile membrane structure, and is a key factor in the production of high-quality tensile membranes. A high-quality tensile membrane can provide customers with high-quality services to meet the special needs of customer projects.

[0003] The existing membrane surface tension measuring instrument has low measurement accuracy, resulting in large measurement errors. It is bulky as a whole, which is not convenient for quickly testing the quality of the tensile membrane in the production of the tensile membrane. Therefore, it is necessary to invent a membrane surface tension measuring instrument and test method that can be conveniently applied to engineering practice, which has important theoretical significance and engineering practical value. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a method for solving the problems that the existing membrane surface tension measuring instrument has low measurement accuracy, resulting in large measurement errors, and is bulky as a whole, making it inconvenient to quickly detect the quality of the tensile membrane during the production of the tensile membrane.

[0005] To achieve the above purpose, the present invention is implemented through the following technical solutions: a new type of tensile membrane structure membrane surface tension tester, comprising:

[0006] A frame body, wherein the four corners of the top side of the frame body are slidably connected with a transmission frame, the bottom end of the transmission frame is connected to the bottom side of the frame body through a meshing assembly, two fixing clips are arranged on the inner periphery of the transmission frame, the fixing clips at the bottom end are fixedly connected to the transmission frame, one end of the two fixing clips are connected by rotation, the other ends of the two fixing clips are connected by a clamping assembly, and a non-slip pad is fixedly connected to the adjacent side of the two fixing clips;

[0007] A limit sleeve, the rear end of which is connected to the rear end of the frame through a support frame, the bottom side of which is connected to a force sensor through a threaded assembly, the rear end of the support frame is rotatably connected to a rotating rod, the top end of the limit sleeve is connected to the top end of the rotating rod through a transmission assembly 1, and the bottom end of the rotating rod is connected to a meshing assembly through a transmission assembly 2;

[0008] A tension test data collector for collecting tension test data is installed on the right side of the frame and is electrically connected to the force sensor via a data line.

[0009] Preferably, the meshing assembly comprises a gear and teeth meshingly connected to each other, the teeth are fixedly connected to the bottom end of the fixing clamp, and the gear is rotatably connected to the bottom side of the frame.

[0010] Preferably, the snap-fit ​​assembly includes two buckles respectively fixedly connected to both sides of the other end of the fixing clip at the top, and both sides of the other end of the fixing clip at the bottom are fixedly connected to a clamping sleeve, and the buckles are snap-fitted to the inside of the clamping sleeve.

[0011] Preferably, the transmission component 1 includes pulley 1 and pulley 2 connected by a pulley, the pulley 1 is rotatably connected to the top side of the limit sleeve, the pulley 2 is fixedly connected to the top side of the rotating rod, the specification size of the pulley 1 is smaller than the specification size of the pulley 2, and the top side of the pulley 1 is fixedly connected with a rotating bolt.

[0012] Preferably, the threaded assembly includes a screw rod fixedly connected to a bottom side of a pulley, the outer wall of the screw rod is threadedly connected to a screw sleeve, the screw sleeve is slidably connected to the inner wall of the limiting sleeve, and the force sensor is installed on the bottom side of the screw sleeve.

[0013] Preferably, the transmission assembly 2 includes a plurality of pulleys 3 connected by belts, wherein one pulley 3 is fixedly connected to the bottom side of the rotating rod, and the remaining pulleys 3 are respectively fixedly connected to the bottom sides of a plurality of gears.

[0014] Preferably, the tension test data collector is internally provided with a data acquisition module for collecting data multiple times, a data statistics module for statistics of multiple groups of data, a data calculation module for calculating data to reduce errors, and a storage module for storing data. The data acquisition module, the data statistics module, the data calculation module and the storage module are electrically connected, and the storage module is internally provided with a data viewing unit for viewing data and a historical data storage unit for reading and storing.

[0015] A novel method for testing the membrane surface tension of a tensile membrane structure comprises the following steps:

[0016] Step 1: first prepare a tensile membrane sample with a size matching the surface area of ​​the top side of the frame, then use two fixing clamps to clamp the four corners of the sample and provide sufficient friction to prevent the sample from falling out from between the two fixing clamps;

[0017] Step 2: Perform a tension test by rotating the rotating bolt to make the force sensor press down against the surface of the sample, thereby squeezing the center of the sample downward to cause deformation, and the force sensor collects data on the deformation of the sample;

[0018] Step three, collecting tension test data. The data collected by the force sensor is transmitted to the tension test data collector through a data line, and the tension test data collector performs data collection and processing.

[0019] Preferably, the data collection and processing flow in the step three is that the data collected by the force sensor is recorded by the data collection module 8 times at an interval of 0.5s, and the data is written into the data statistics module, the data statistics module arranges the recorded values ​​according to the value size, and deletes the largest and smallest data, and the remaining six values ​​are imported into the data calculation module for calculation, and the average value is taken to reduce the error, and finally imported into the data viewing unit in the storage module, so that the inspection personnel can view the measurement data through the tension test data collector, and the data in the data viewing unit is imported into the historical data storage unit.

[0020] Preferably, the data stored in the historical data storage unit is imported into the data viewing unit to view the historical data and compare the historical data with the new data.

[0021] Working principle: Before conducting a tension test on the tension membrane, first prepare a tension membrane sample with a size that matches the surface area of ​​the top side of the frame, then press the buckle to disengage the buckle from the card sleeve to unfold the fixing clamp, and place the four corners of the sample between the two unfolded fixing clamps, and close the two fixing clamps to deform the buckle and insert it into the card sleeve, and engage it through elastic reset, so that the two anti-slip pads clamp the four corners of the sample and provide sufficient friction to prevent the sample from falling out from between the two fixing clamps, then rotate the rotating bolt to rotate the pulley one, and the rotating pulley one drives the screw on the bottom side to rotate, and the belt drives the pulley two to rotate, the screw drive thread transmission and force transmission The screw sleeve connected to the sensor moves downward and gradually approaches the sample. The rotating rotating rod drives the pulley three connected to it to rotate, and transmits the other pulley three connected to the gear through the belt, so that the gear meshes with the teeth to drive the transmission frame, so that the multiple fixing clamps connected to the transmission frame are offset to the periphery with the center of the frame as the center point to pull the four corners of the sample to tighten and flatten the sample. Since the specification of the transmission pulley one is smaller than that of the pulley two, after the pulley one rotates several circles, the pulley two only rotates a certain angle, so that after the sample is flattened, the driven screw sleeve brings the force sensor into contact with the surface of the sample to squeeze the center of the sample downward to cause it to deform, and the force sensor collects the deformation data of the sample.

[0022] The present invention provides a novel tensile membrane structure membrane surface tension tester and test method, which has the following beneficial effects:

[0023] 1. The overall volume of the test instrument of the present invention is relatively small, and it is a size that can be held in both hands, so that the device can be easily carried. There is no large-scale driving structure. At the same time, the device adopts a manual method for collection, and the contact force of the tensioned film can be quickly adjusted according to the needs of the tester, which greatly improves the convenience of the device as a whole.

[0024] 2. The present invention can simultaneously tighten and flatten the sample to improve the detection accuracy while performing detection, thereby improving the detection efficiency, through the mutual cooperation of the transmission component 1, the transmission component 2, the meshing component, the fixing clamp, and the anti-slip pad.

[0025] 3. When collecting data, the present invention reduces errors by collecting data multiple times, processing overly large values ​​and overly small values, and taking the average value of the remaining multiple values, thereby improving the accuracy of detection and improving the accuracy of production quality detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A perspective view of the present invention;

[0027] Figure 2 It is a schematic structural diagram of the limiting sleeve of the present invention;

[0028] Figure 3 It is a schematic structural diagram of the bottom side of the present invention;

[0029] Figure 4 It is a schematic structural diagram of the engagement assembly of the present invention;

[0030] Figure 5 It is a structural schematic diagram of the anti-slip mat of the present invention;

[0031] Figure 6 A diagram of a tension data collection system of the present invention;

[0032] Figure 7 It is a schematic diagram of a storage module of the present invention;

[0033] Figure 8 It is a tension data processing flow chart of the present invention.

[0034] Among them, 1. frame; 2. limit sleeve; 3. rotating bolt; 4. screw; 5. force sensor; 6. tension test data collector; 7. pulley one; 8. pulley two; 9. rotating rod; 10. pulley three; 11. gear; 12. transmission frame; 13. fixing clip; 14. anti-slip pad; 15. buckle; 16. card sleeve; 17. data acquisition module; 18. data statistics module; 19. data calculation module; 20. storage module; 21. data viewing unit; 22. historical data storage unit. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] Example:

[0037] As one aspect of this application, please see the attached Figure 1 - Attachment Figure 5 The embodiment of the present invention provides a novel tensile membrane structure membrane surface tension tester, comprising:

[0038] The frame 1 has a transmission frame 12 slidably connected to the four corners of the top side of the frame 1, and the gears 11 and teeth are meshed with each other, and the teeth are fixedly connected to the bottom end of the fixing clip 13, and the gear 11 is rotatably connected to the bottom side of the frame 1, and two fixing clips 13 are arranged on the inner periphery of the transmission frame 12, and the bottom fixing clip 13 is fixedly connected to the transmission frame 12, and one end of the two fixing clips 13 is connected by rotation, and is respectively fixedly connected to two buckles 15 on both sides of the other end of the top fixing clip 13, and the other end of the bottom fixing clip 13 is fixedly connected to the two sides of the clamping sleeve 16, and the buckle 15 is clamped and connected to the inside of the clamping sleeve 16, and the adjacent side of the two fixing clips 13 is fixedly connected to the anti-slip pad 14;

[0039] Specifically, the overall volume of the test instrument is small, and it is a size that can be held in both hands, so it is easy to carry the equipment. There is no large driving structure. At the same time, the equipment uses manual collection, and the contact strength of the tensioned film can be quickly adjusted according to the needs of the tester, which greatly improves the convenience of the equipment as a whole. The surface of the anti-skid pad 14 is provided with wavy anti-skid patterns, and the body of the anti-skid pad 14 is composed of relatively expanded rubber. It has elasticity, which can make the two fixed clamps 13 connected to it close together. When clamping the sample to be tested, its expansion characteristics are used to press against the sample, thereby clamping the sample.

[0040] A limiting sleeve 2, the rear end of the limiting sleeve 2 is connected to the rear end of the frame body 1 through a supporting frame, the bottom side of the limiting sleeve 2 is connected to a force sensor 5 through a threaded assembly, the rear end of the supporting frame is rotatably connected to a rotating rod 9, a pulley 1 7 and a pulley 2 8 connected through pulleys, the pulley 1 7 is rotatably connected to the top side of the limiting sleeve 2, the pulley 2 8 is fixedly connected to the top side of the rotating rod 9, the specification of the pulley 1 7 is smaller than the specification of the pulley 2 8, the top side of the pulley 1 7 is fixedly connected to a rotating bolt 3, the outer wall of the screw 4 fixedly connected to the bottom side of the pulley 1 7 is threadedly connected to a screw sleeve, the screw sleeve is slidably connected to the inner wall of the limiting sleeve 2, the force sensor 5 is installed on the bottom side of the screw sleeve, a plurality of pulleys 3 10 connected by belts, one of the pulleys 3 10 is fixedly connected to the bottom side of the rotating rod 9, and the remaining pulleys 3 10 are respectively fixedly connected to the bottom sides of a plurality of gears 11;

[0041] Specifically, the outer wall of the screw sleeve corresponds to the inner wall of the limit sleeve 2, so that the screw sleeve is prevented from rotating when it is driven by the screw rod 4. The rotating bolt 3 is provided with an extended force-applying part, so as to facilitate the rotation of the rotating bolt 3 to start the equipment for the detection of the tensioned film. The specification of the transmission pulley 1 7 is smaller than that of the pulley 2 8, so that after the pulley 1 7 rotates multiple times, the pulley 2 8 only rotates through a certain angle, so as to avoid excessive rotation of the pulley 3 10 of the rotating rod 9 caused by the driven pulley 2 8 when the pulley 1 7 rotates too many times, thereby ensuring the stability of the transmission gear 11 and avoiding excessive transmission of the connecting teeth of the gear 11.

[0042] A tension test data collector 6 for collecting tension test data is installed on the right side of the frame 1. The tension test data collector 6 is electrically connected to the force sensor 5 via a data line. The tension test data collector 6 is internally provided with a data acquisition module 17 for multiple data acquisitions, a data statistics module 18 for multiple sets of data statistics, a data calculation module 19 for calculating data to reduce errors, and a storage module 20 for storing data. The data acquisition module 17, the data statistics module 18, the data calculation module 19 and the storage module 20 are electrically connected. The storage module 20 is internally provided with a data viewing unit 21 for viewing data and a historical data storage unit 22 for reading and storing.

[0043] Specifically, during data collection, the error is reduced by collecting data multiple times and processing excessively large and excessively small values, and taking the average of the remaining multiple values, thereby improving the accuracy of detection and improving the accuracy of production quality detection. The data viewing unit 21 in the storage module 20 is connected to the display screen of the tension test data collector 6, so that the staff can see the collected data. The historical data storage unit 22 can also store and release historical data, so that the new data can be compared with the historical data to judge the quality of the tensile membrane products produced in this batch.

[0044] Based on the above provided new type of tensile membrane structure membrane surface tension tester, please refer to the attached Figure 6 - Attachment Figure 8 As another aspect of the present invention, this embodiment provides a novel method for testing the membrane surface tension of a tensile membrane structure, comprising the following steps:

[0045] Step 1: First, prepare a tensile film sample with a size matching the surface area of ​​the top side of the frame 1, then press the buckle 15 to disengage the buckle 15 from the clamping sleeve 16 to unfold the fixing clip 13, and place the four corners of the sample between the two unfolded fixing clips 13, and close the two fixing clips 13 to deform the buckle 15 and insert it into the inside of the clamping sleeve 16, and engage it through elastic reset, so that the two anti-slip pads 14 clamp the four corners of the sample and provide sufficient friction to prevent the sample from falling out from between the two fixing clips 13;

[0046] Step 2, perform tension test, rotate the rotating bolt 3 to rotate the pulley 1 7, the rotating pulley 1 7 drives the screw 4 on the bottom side to rotate, and the belt drive pulley 2 8 is used to rotate, the screw 4 drives the thread drive and the screw sleeve connected to the force sensor 5 to move downward, gradually approaching the sample, the rotating rotating rod 9 drives the pulley 3 10 connected thereto to rotate, and drives the remaining pulleys 10 connected to the gear 11 through the belt, so that the gear 11 meshes with the gear teeth to drive the transmission frame 12, so that the multiple fixing clips 13 connected to the transmission frame 12 are offset to the periphery with the center of the frame 1 as the center point to pull the four corners of the sample, so that the sample is tightened and flattened, because the specification of the driven pulley 1 7 is smaller than the pulley 2 8, after the pulley 1 7 rotates multiple circles, the pulley 2 8 only rotates a certain angle, so that after the sample is flattened, the driven screw sleeve brings the power sensor 5 to abut on the surface of the sample to squeeze the center of the sample downward to cause it to deform, and the force sensor 5 collects the data of the sample deformation;

[0047] Step three, collect tension test data. The data collected by the force sensor 5 is transmitted to the tension test data collector 6 through the data line, and the tension test data collector 6 performs data collection and processing. The processing flow is that the data collected by the force sensor 5 is recorded 8 times by the data acquisition module 17 at an interval of 0.5s, and the data is written into the data statistics module 18. The data statistics module 18 arranges the recorded values ​​according to the value size, and deletes the largest and smallest data. The remaining six values ​​are imported into the data calculation module 19 for calculation, and the average value is taken to reduce the error. Finally, it is imported into the data viewing unit 21 in the storage module 20, so that the inspection personnel can view the measurement data through the tension test data collector 6, import the data in the data viewing unit 21 into the historical data storage unit 22, and import the data stored in the historical data storage unit 22 into the data viewing unit 21, so as to view the historical data and compare the historical data with the new data.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of tensile membrane structure membrane surface tension tester, characterized in that: include: A frame body (1), wherein the four corners of the top side of the frame body (1) are slidably connected with a transmission frame (12), the bottom end of the transmission frame (12) is connected to the bottom side of the frame body (1) through a meshing assembly, two fixing clips (13) are arranged on the inner periphery of the transmission frame (12), the fixing clips (13) at the bottom end are fixedly connected to the transmission frame (12), one end of the two fixing clips (13) is connected by rotation, the other end of the two fixing clips (13) is connected by a snap-fit ​​assembly, and the adjacent sides of the two fixing clips (13) are fixedly connected with an anti-slip pad (14); A limiting sleeve (2), the rear end of the limiting sleeve (2) is connected to the rear end of the frame body (1) through a support frame, the bottom side of the limiting sleeve (2) is connected to a force sensor (5) through a threaded assembly, the rear end of the supporting frame is rotatably connected to a rotating rod (9), the top end of the limiting sleeve (2) is connected to the top end of the rotating rod (9) through a transmission assembly 1, and the bottom end of the rotating rod (9) is connected to a meshing assembly through a transmission assembly 2; A tension test data collector (6) for collecting tension test data, wherein the tension test data collector (6) is installed on the right side of the frame (1), and the tension test data collector (6) is electrically connected to the force sensor (5) via a data line.

2. A novel tensile membrane structure membrane surface tension tester according to claim 1, characterized in that: The meshing assembly comprises a gear (11) and teeth meshingly connected to each other, the teeth being fixedly connected to the bottom end of the fixing clamp (13), and the gear (11) being rotationally connected to the bottom side of the frame (1).

3. The novel tensile membrane structure membrane surface tension tester according to claim 1 is characterized in that: The snap-fit ​​assembly comprises two snap hooks (15) respectively fixedly connected to the two sides of the other end of the fixing clip (13) at the top end, and the two sides of the other end of the fixing clip (13) at the bottom end are fixedly connected to the clamping sleeve (16), and the snap hooks (15) are snap-fitted to the inside of the clamping sleeve (16).

4. The novel tensile membrane structure membrane surface tension tester according to claim 1 is characterized in that: The transmission assembly 1 comprises a pulley 1 (7) and a pulley 2 (8) connected by pulleys, the pulley 1 (7) is rotatably connected to the top side of the limiting sleeve (2), the pulley 2 (8) is fixedly connected to the top side of the rotating rod (9), the size of the pulley 1 (7) is smaller than the size of the pulley 2 (8), and the top side of the pulley 1 (7) is fixedly connected with a rotating bolt (3).

5. The novel tensile membrane structure membrane surface tension tester according to claim 4 is characterized in that: The threaded assembly comprises a screw rod (4) fixedly connected to the bottom side of a pulley (7), the outer wall of the screw rod (4) being threadedly connected to a screw sleeve, the screw sleeve being slidably connected to the inner wall of a limiting sleeve (2), and the force sensor (5) being mounted on the bottom side of the screw sleeve.

6. The novel tensile membrane structure membrane surface tension tester according to claim 2 is characterized in that: The transmission assembly 2 comprises a plurality of pulleys 3 (10) connected by belts, wherein one of the pulleys 3 (10) is fixedly connected to the bottom side of the rotating rod (9), and the remaining pulleys 3 (10) are respectively fixedly connected to the bottom sides of a plurality of gears (11).

7. The novel tensile membrane structure membrane surface tension tester according to claim 1 is characterized in that: The tension test data collector (6) is provided with a data acquisition module (17) for collecting data multiple times, a data statistics module (18) for statistics of multiple groups of data, a data calculation module (19) for calculating data to reduce errors, and a storage module (20) for storing data. The data acquisition module (17), the data statistics module (18), the data calculation module (19) and the storage module (20) are electrically connected. The storage module (20) is provided with a data viewing unit (21) for viewing data and a historical data storage unit (22) for reading and storing.

8. A novel tensile membrane structure membrane surface tension test method, using a novel tensile membrane structure membrane surface tension tester as claimed in any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: first prepare a tensile membrane sample with a size matching the surface area of ​​the top side of the frame (1), then use two fixing clamps (13) to clamp the four corners of the sample and provide sufficient friction to prevent the sample from falling out from between the two fixing clamps (13); Step 2: Perform a tension test by rotating the rotating bolt (3) to make the force sensor (5) press down against the surface of the sample, thereby squeezing the center of the sample downward to cause deformation, and the force sensor (5) collects data on the deformation of the sample; Step three, collecting tension test data. The data collected by the force sensor (5) is transmitted to the tension test data collector (6) via a data line, and the tension test data collector (6) performs data collection and processing.

9. A novel tensile membrane structure membrane surface tension test method according to claim 8, characterized in that: The data collection and processing flow in step three is as follows: the data collected by the force sensor (5) is recorded 8 times by the data collection module (17) at an interval of 0.5 seconds, and the data is written into the data statistics module (18); the data statistics module (18) arranges the recorded values ​​according to the value size, deletes the largest and smallest data, and imports the remaining six values ​​into the data calculation module (19) for calculation, takes the average value to reduce the error, and finally imports them into the data viewing unit (21) in the storage module (20), so that the test personnel can view the measurement data through the tension test data collector (6); and the data in the data viewing unit (21) is imported into the historical data storage unit (22).

10. A novel tensile membrane structure membrane surface tension test method according to claim 9, characterized in that: The data stored in the historical data storage unit (22) is imported into the data viewing unit (21) to view the historical data and compare the historical data with new data.

Images