Tent tarpaulin strength detection device and use method thereof

Abstract

The invention relates to the technical field of material performance detection, in particular to a tent cloth strength detection device and a use method thereof. Comprising a rack, rollers used for guiding tarpaulin are symmetrically installed on the rack, a supporting mechanism is arranged on the rack and used for supporting the tarpaulin, a lifting frame is arranged on the rack in a sliding mode, a control mechanism used for controlling the lifting frame to ascend and descend is arranged on the rack, and hollow cylinders are arranged on the lifting frame at intervals; a pressure sensor is slidably arranged in the hollow cylinder. According to the invention, through the cooperation of the guiding of the roller and the supporting plate, the whole material can be subjected to continuous segmented strength detection after the tarpaulin is produced and before the tarpaulin is cut and sewn into the tent, so that the randomness and contingency caused by local sampling in the traditional sampling test are avoided, and the overall mechanical properties of the whole tarpaulin are comprehensively and accurately reflected; and the waste of raw materials, labor and time cost is obviously reduced.

Description

Technical Field

[0001] This invention relates to the field of material performance testing technology, and in particular to a tent fabric strength testing device and its usage method. Background Technology

[0002] Tents are essential equipment widely used in outdoor camping, emergency rescue, military field operations, and temporary construction. The mechanical strength of the tarpaulin, its core component, directly affects the safety, stability, and service life of the overall structure. Therefore, conducting scientific, accurate, and efficient strength testing on tarpaulin materials is a key step in ensuring product quality and safe use.

[0003] Currently, the industry generally uses standard mechanical testing methods, such as tensile strength, tear strength, and bursting strength, to test the strength of tent fabrics. These methods typically involve cutting small samples from the finished fabric and conducting offline testing in a laboratory environment using equipment such as universal testing machines, based on relevant national standards or industry specifications. However, this traditional sampling testing method has significant technical defects and application limitations: First, the samples taken are only a local area of ​​the entire fabric, and the test results are easily affected by factors such as uneven weaving, differences in coating thickness, local defects, or stress concentration during processing, resulting in significant randomness and chance, making it difficult to truly and comprehensively reflect the overall mechanical properties of the entire fabric under actual use. Second, the existing testing process is usually arranged after the finished fabric is manufactured, which is a "post-production inspection." Once the sampling test results are deemed unqualified, it often means that a large amount of raw materials, labor, and time costs have been invested in the entire batch of products, but they face the risk of rework, downgrading, or even scrapping the entire batch, which not only wastes resources but also seriously affects production efficiency and delivery cycle. Summary of the Invention

[0004] In view of this, the present invention provides a tent fabric strength testing device and its usage method, which can solve the shortcomings of traditional tent fabric strength testing methods, such as difficulty in comprehensively and accurately reflecting the actual performance of the entire tent fabric, and the waste of resources and low production efficiency caused by post-inspection.

[0005] The technical solution of the present invention is: a tent fabric strength testing device, comprising a frame, rollers symmetrically mounted on the frame for guiding the tent fabric, a support mechanism on the frame for supporting the tent fabric, a lifting frame slidably mounted on the frame, a control mechanism on the frame for controlling the lifting frame to move up and down, hollow cylinders spaced apart on the lifting frame, pressure sensors slidably mounted inside the hollow cylinders, pressure blocks mounted at the bottom of the pressure sensors, a movable plate slidably mounted inside the hollow cylinders, a first spring connecting the bottom of the movable plate to the pressure sensor, and a load adjustment mechanism on the hollow cylinders for adjusting the position of the movable plate.

[0006] As an improvement to the above solution, the support mechanism includes a support frame and a support plate. The support frame is installed on the frame, and the support plate for supporting the tarpaulin is installed on the top of the support frame. Through holes are spaced apart on the support plate.

[0007] As an improvement to the above solution, the control mechanism includes a controller and an electric push rod. The controller is installed on the side of the frame, and the electric push rods are symmetrically arranged inside the frame. The telescopic rods of the electric push rods are connected to the lifting frame.

[0008] As an improvement to the above solution, the load adjustment mechanism includes a second spring and an oil supply pipe. The second spring is connected between the bottom of the movable plate and the inner side of the hollow cylinder, and the oil supply pipe is installed on the top of the hollow cylinder.

[0009] As an improvement to the above solution, a protective pad is also included. A protective pad is installed at the bottom of the lifting frame to protect the tarpaulin.

[0010] As an improvement to the above solution, a limiting mechanism is also included. The limiting mechanism includes a guide rod, a limiting frame, and a sliding frame. Guide rods are symmetrically arranged on the frame, a limiting frame is provided on the guide rod, and a sliding frame is slidably arranged on the guide rod.

[0011] As an improvement to the above solution, it also includes an adjusting rod, which is symmetrically and rotatably mounted on the frame. The limiting frame is rotatably connected to the adjusting rod, and the sliding frame is threadedly connected to the adjusting rod.

[0012] This invention also provides a method for using a tent fabric strength testing device, comprising the following steps: First, a taut tent fabric is inserted between two rollers on a frame, passes over the upper surface of a support plate, and then exits between two other rollers; then, hydraulic oil is injected or extracted into the hollow cylinder through an oil pipe to adjust the position of the movable plate, thereby driving the pressure block to rise and fall, thus adjusting the testing load range; during testing, the telescopic rod of the electric push rod is extended by the controller, causing the lifting frame to move the hollow cylinder, movable plate, pressure sensor, and pressure block downwards; when the pressure block contacts the tent fabric, if the tent fabric is not broken, the first spring is compressed, the pressure continues to rise and is transmitted to the controller by the pressure sensor; if the tent fabric is broken, the pressure block passes through the through hole, the pressure no longer increases or drops sharply, and it is judged as unqualified; after the test is completed, the telescopic rod of the electric push rod is retracted by the controller, the lifting frame rises, and the pressure block detaches from the tent fabric.

[0013] The beneficial effects are as follows: 1. By using roller guides and support plates in combination, the present invention can continuously and segmentally test the strength of the entire material after the tarpaulin is produced but before it is cut and sewn into a tent. This avoids the randomness and accidentality caused by local sampling in traditional sampling tests, thereby comprehensively and accurately reflecting the overall mechanical properties of the entire tarpaulin and significantly reducing the waste of raw materials, labor and time costs.

[0014] 2. This invention injects or extracts hydraulic oil into the hollow cylinder through an oil supply pipe, and the position of the movable plate can be adjusted. With the elastic action of the first and second springs, stepless control of the initial height and maximum applied pressure of the pressure block can be achieved. At the same time, the pressure sensor transmits real-time data to the controller. Once the tarpaulin breaks, it immediately captures the pressure change and automatically determines whether the strength is qualified. The detection process is efficient and accurate, and it is suitable for tarpaulins of different materials, thicknesses and strength grades.

[0015] 3. The present invention is equipped with a limiting mechanism driven by an adjusting rod, which can quickly adapt to tarpaulins of different widths and ensure their straight transport; moreover, a protective pad is provided at the bottom of the lifting frame to prevent damage to the surface of the tarpaulin and improve the overall integrity and appearance quality of the tarpaulin during the inspection process. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0017] Figure 2 This is a three-dimensional structural diagram of the support mechanism of the present invention.

[0018] Figure 3 This is a three-dimensional structural diagram of the control mechanism of the present invention.

[0019] Figure 4 This is a three-dimensional structural diagram of the lifting frame, hollow cylinder, and oil pipeline of the present invention.

[0020] Figure 5 This is a three-dimensional structural diagram of the pressure sensor, pressure block, and movable plate of the present invention.

[0021] Figure 6 This is a structural separation diagram of the pressure sensor, pressure block, and movable plate of the present invention.

[0022] Figure 7 This is a three-dimensional structural diagram of the lifting frame, pressure block, and protective pad of the present invention.

[0023] Figure 8 This is a three-dimensional structural diagram of the limiting mechanism of the present invention.

[0024] Figure 9 This is a three-dimensional structural diagram of the limiting frame, sliding frame, and adjusting rod of the present invention.

[0025] The following are the labels in the diagram: 1. Frame, 2. Roller, 301. Support frame, 302. Support plate, 303. Through hole, 4. Lifting frame, 501. Controller, 502. Electric push rod, 6. Hollow cylinder, 7. Pressure sensor, 8. Pressure block, 9. Movable plate, 10. First spring, 1101. Second spring, 1102. Oil pipe, 12. Protective pad, 13. Guide rod, 14. Limiting frame, 15. Sliding frame, 16. Adjusting rod. Detailed Implementation

[0026] The above-described solution will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are for illustrative purposes only and are not intended to limit the scope of this application. The implementation conditions used in the embodiments may be further adjusted according to the conditions of specific manufacturers, and the implementation conditions not specified are generally those in routine experiments.

[0027] Example: A device for testing the strength of tent fabric and its usage method, see below. Figures 1-7 As shown, the system includes a frame 1; it also includes rollers 2, a support mechanism, a lifting frame 4, a control mechanism, a hollow cylinder 6, a pressure sensor 7, a pressure block 8, a movable plate 9, a first spring 10, and a load adjustment mechanism; four rollers 2 are symmetrically arranged on the upper side of the frame 1, with two rollers 2 distributed vertically at the front of the upper side of the frame 1, and the remaining two rollers 2 distributed vertically at the rear of the upper side of the frame 1. The rollers 2 are used to guide the tarpaulin; a support mechanism is provided on the frame 1 to support the tarpaulin; the upper side of the frame 1... A lifting frame 4 is slidably installed; a control mechanism for raising and lowering the lifting frame 4 is installed on the frame 1; hollow cylinders 6 are spaced apart on the lifting frame 4; a pressure sensor 7 is slidably installed on the lower side inside the hollow cylinder 6; a pressure block 8 is installed at the bottom of the pressure sensor 7, and the bottom of the pressure block 8 is an arc surface for protecting the tarpaulin; a movable plate 9 is slidably installed on the upper side inside the hollow cylinder 6; a first spring 10 is connected between the bottom of the movable plate 9 and the pressure sensor 7; a load adjustment mechanism is installed on the hollow cylinder 6, which is used to adjust the position of the movable plate 9.

[0028] See Figure 2 and Figure 3 As shown, the support mechanism includes a support frame 301 and a support plate 302; the support frame 301 is installed in the middle of the lower side of the frame 1; the support plate 302 for supporting the tarpaulin is installed on the top of the support frame 301, the support plate 302 is located directly below the lifting frame 4, and through holes 303 are spaced apart on the support plate 302, the distribution of the through holes 303 is consistent with the distribution of the hollow cylinder 6.

[0029] See Figure 1 and Figure 3 As shown, the control mechanism includes a controller 501 and an electric push rod 502; the controller 501 is installed on the left side of the frame 1, and the pressure sensor 7 is electrically connected to the controller 501; two electric push rods 502 are symmetrically arranged on the upper side of the frame 1, the telescopic rods of the electric push rods 502 are connected to the lifting frame 4, and the electric push rods 502 are electrically connected to the controller 501.

[0030] See Figures 4-6As shown, the load adjustment mechanism includes a second spring 1101 and an oil supply pipe 1102; the second spring 1101 is connected between the bottom of the movable plate 9 and the inner side of the hollow cylinder 6; and the oil supply pipe 1102 is installed between the top of the hollow cylinder 6.

[0031] In the initial state, the movable plate 9 rests against the top of the hollow cylinder 6; Before testing, the taut tarpaulin is passed through the two rollers 2 arranged vertically at the rear of the frame 1, around the upper surface of the support plate 302, and then through the two rollers 2 arranged vertically at the front. Next, hydraulic oil is injected into the hollow cylinder 6 through the oil supply pipe 1102. The oil pressure pushes the movable plate 9 to move downward, compressing the second spring 1101. The movable plate 9 drives the pressure sensor 7 and the pressure block 8 to move downward synchronously through the first spring 10, thereby reducing the initial height of the pressure block 8 and increasing the maximum pressure that can be applied subsequently. If it is necessary to reduce the detection pressure, some hydraulic oil is extracted through the oil supply pipe 1102. Under the action of the elastic force, the second spring 1101 pushes the movable plate 9 to move upward, causing the pressure block 8 to rise. This process realizes the flexible adjustment of the detection load range. The following testing operation is performed: The controller 501 controls the extension of the telescopic rod of the electric push rod 502, causing the entire lifting frame 4 to descend. This causes the hollow cylinder 6, movable plate 9, pressure sensor 7, and pressure block 8 to descend synchronously. When the arc surface at the bottom of the pressure block 8 contacts the tarpaulin, if the tarpaulin is strong enough, it will prevent the pressure block 8 from continuing to descend, temporarily stopping its movement with the pressure sensor 7. At this time, the hollow cylinder 6 and movable plate 9 are still descending, causing the first spring 10 to be compressed. As the compression of the first spring 10 increases, the force it exerts on the pressure sensor 7... As the pressure increases, the squeezing force of the pressure block 8 on the tarpaulin also increases. The pressure sensor 7 transmits the real-time pressure value to the controller 501, and the displayed pressure continues to increase until the lifting frame 4 reaches the set lower limit position. If the tarpaulin is not strong enough, it will break before the pressure reaches its limit. The pressure block 8 will continue to descend through the through hole 303 on the support plate 302. At this time, the first spring 10 stops compressing or even begins to rebound. The pressure on the pressure sensor 7 no longer increases or drops rapidly. The pressure value displayed on the controller 501 tends to be stable or drops sharply. Based on this, it can be determined that the tarpaulin strength in this area is unqualified. After the test is completed, the telescopic rod of the electric push rod 502 is retracted by the controller 501, and the lifting frame 4 rises. If the first spring 10 is in a compressed state, the first spring 10 gradually recovers. After it recovers, the first spring 10 will drive the pressure sensor 7 and the pressure block 8 to move upward and detach from the tarpaulin. If the first spring 10 has been fully reset, the movable plate 9 will directly drive the pressure sensor 7 and the pressure block 8 to move upward and detach from the tarpaulin through the first spring 10. Then, the tarpaulin is pulled forward so that the tested area leaves the support plate 302 and the untested area is put back in place. Repeating the above process can realize continuous and segmented strength testing.

[0032] See Figure 7 As shown, it also includes a protective pad 12; the bottom of the lifting frame 4 is equipped with a protective pad 12, which is used to protect the tarpaulin.

[0033] By setting up the protective pad 12, the surface of the tarpaulin can be provided with additional cushioning and protection during the descent of the lifting frame 4, avoiding direct contact between the bottom of the lifting frame 4 and the tarpaulin, which would cause scratches or indentations, and improving the overall integrity and appearance quality of the tarpaulin during the inspection process.

[0034] See Figure 8 and Figure 9 As shown, it also includes a limiting mechanism, which includes a guide rod 13, a limiting frame 14, and a sliding frame 15. Two guide rods 13 are symmetrically arranged on the upper side of the frame 1, and the guide rods 13 are located directly below the roller 2. The limiting frame 14 is provided on the guide rod 13, and the sliding frame 15 is slidably arranged on the guide rod 13. The sliding frame 15 is located to the right of the limiting frame 14. The limiting frame 14 and the sliding frame 15 are used to limit the side of the tarpaulin to ensure that the tarpaulin is in a straight line in the front-back direction.

[0035] See Figure 8 and Figure 9 As shown, it also includes an adjusting rod 16; the adjusting rod 16 is symmetrically and rotatably arranged on the upper side of the frame 1, the adjusting rod 16 is located directly above the roller 2, the limiting frame 14 is rotatably connected to the adjusting rod 16, and the sliding frame 15 is threadedly connected to the adjusting rod 16.

[0036] By setting a limiting mechanism and adjusting rod 16, the tarpaulin can be effectively constrained and accurately positioned in the width direction (i.e., the left and right direction). Specifically, the limiting frame 14 and the sliding frame 15 clamp the edge of the tarpaulin from both sides to prevent it from shifting, wrinkling or tilting during transportation or testing, ensuring that the tarpaulin always passes through the support plate 302 in a straight and taut state, thereby improving the stability and repeatability of the test. At the same time, rotating the adjusting rod 16 can drive the sliding frame 15 to move left and right along the guide rod 13, realizing stepless adjustment of the distance between the two limiting components. This structure can be adapted to tarpaulins of different widths without replacing parts. It is easy to operate and flexible to adjust, significantly improving the versatility and automation adaptability of the device.

[0037] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A tent fabric strength testing device, comprising a frame (1), characterized in that, The frame (1) is symmetrically equipped with rollers (2) for guiding the tarpaulin. The frame (1) is equipped with a support mechanism for supporting the tarpaulin. The frame (1) is slidably equipped with a lifting frame (4). The frame (1) is equipped with a control mechanism for controlling the lifting frame (4) to lift. Hollow cylinders (6) are spaced apart on the lifting frame (4). A pressure sensor (7) is slidably installed inside the hollow cylinder (6). A pressure block (8) is installed at the bottom of the pressure sensor (7). A movable plate (9) is slidably installed inside the hollow cylinder (6). A first spring (10) is connected between the bottom of the movable plate (9) and the pressure sensor (7). A load adjustment mechanism is provided on the hollow cylinder (6) for adjusting the position of the movable plate (9).

2. The tent fabric strength testing device according to claim 1, characterized in that, The support mechanism includes a support frame (301) and a support plate (302). The support frame (301) is installed on the frame (1). The support plate (302) for supporting the tarpaulin is installed on the top of the support frame (301). Through holes (303) are spaced apart on the support plate (302).

3. The tent fabric strength testing device according to claim 2, characterized in that, The control mechanism includes a controller (501) and an electric push rod (502). The controller (501) is installed on the side of the frame (1), and the electric push rod (502) is symmetrically arranged inside the frame (1). The telescopic rod of the electric push rod (502) is connected to the lifting frame (4).

4. The tent fabric strength testing device according to claim 3, characterized in that, The load adjustment mechanism includes a second spring (1101) and an oil pipe (1102). The bottom of the movable plate (9) is connected to the inside of the hollow cylinder (6) by the second spring (1101), and the top of the hollow cylinder (6) is equipped with an oil pipe (1102).

5. The tent fabric strength testing device according to claim 1, characterized in that, It also includes a protective pad (12), and the bottom of the lifting frame (4) is equipped with a protective pad (12) for protecting the tarpaulin.

6. The tent fabric strength testing device according to claim 1, characterized in that, It also includes a limiting mechanism, which includes a guide rod (13), a limiting frame (14) and a sliding frame (15). The guide rod (13) is symmetrically arranged on the frame (1), the limiting frame (14) is arranged on the guide rod (13), and the sliding frame (15) is slidably arranged on the guide rod (13).

7. The tent fabric strength testing device according to claim 6, characterized in that, It also includes an adjusting rod (16), which is symmetrically and rotatably mounted on the frame (1). The limiting frame (14) is rotatably connected to the adjusting rod (16), and the sliding frame (15) is threadedly connected to the adjusting rod (16).

8. A method of using a tent fabric strength testing device, employing the tent fabric strength testing device as described in claim 4, characterized in that, Includes the following steps: First, the taut tarpaulin is inserted between the two rollers (2) on the frame (1), passes over the upper surface of the support plate (302), and then exits between the other two rollers (2); then, hydraulic oil is injected or extracted into the hollow cylinder (6) through the oil supply pipe (1102), and the position of the movable plate (9) is adjusted, thereby driving the pressure block (8) to rise and fall, thus realizing the adjustment of the detection load range; during detection, the telescopic rod of the electric push rod (502) is extended by the controller (501), so that the lifting frame (4) drives the hollow cylinder (6) and the movable plate (9) to rise and fall. The moving plate (9), pressure sensor (7) and pressure block (8) move downwards; when the pressure block (8) contacts the tarpaulin, if the tarpaulin is not broken, the first spring (10) is compressed, the pressure continues to rise and is transmitted to the controller (501) by the pressure sensor (7); if the tarpaulin is broken, the pressure block (8) passes through the through hole (303), the pressure no longer increases or drops sharply, and it is judged as unqualified; after the test is completed, the telescopic rod of the electric push rod (502) is driven to retract by the controller (501), the lifting frame (4) rises, and the pressure block (8) is removed from the tarpaulin.

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