A force-increasing device and a force-increasing method for a tensile machine

Abstract

The present invention discloses a force-increasing device and a force-increasing method for a tensile testing machine, which are applied in the technical field of tensile testing machines. By arranging a lifting structure and a force-increasing structure, the present invention enables a mobile mechanism to test a test component within its loading capacity range. When the test component exceeds the upper limit of the loading capacity of the mobile mechanism, the force-increasing structure intervenes, so that the pulling plate drives the test component again to perform a second stage of tensile testing, thereby increasing the loading capacity of the mobile mechanism and being able to test a test component that exceeds the upper limit of the loading capacity of the mobile mechanism, thereby achieving the desired effect.

Description

Technical Field

[0001] The present invention belongs to the technical field of tensile machines, and in particular relates to a force amplifying device and a force amplifying method of a tensile machine. Background Art

[0002] Due to the working mode of the tensile testing machine, a variety of situations will be encountered during the use of the tensile testing machine, but not limited to the following one. More specifically, because the loading capacity of the tensile testing machine has been determined during design and manufacturing, the loading capacity of the tensile testing machine cannot be increased. Therefore, tests exceeding the rated loading capacity of the tensile testing machine cannot be performed;

[0003] Combining the above-mentioned problem points, we can find that it is difficult to avoid the above-mentioned problems when using the existing tensile testing machines on the market. Moreover, even if the problems can be solved, the device needs to be replaced, which makes it impossible to achieve the desired effect. Therefore, we propose a force-increasing device and force-increasing method for the tensile testing machine when it is in use. Summary of the Invention

[0004] The purpose of the present invention is to target an existing force-increasing device and force-increasing method for a tensile testing machine. Its advantage is that through the lifting structure and the force-increasing structure, the mobile mechanism can test the test component within its loading capacity range. When the test component exceeds the upper limit of the loading capacity of the mobile mechanism, the force-increasing structure will intervene, so that the pulling plate will drive the test component again to perform the second stage of tensile testing, thereby increasing the loading capacity of the mobile mechanism and being able to test the test component that exceeds the upper limit of the loading capacity of the mobile mechanism, thereby achieving the desired effect.

[0005] The above technical objectives of the present invention are achieved through the following technical solutions: a force-boosting device for a tensile testing machine, comprising a main structure, the main structure comprising a bearing seat, support columns bolted to both sides of the top of the bearing seat, a connecting column bolted to the top between the opposite sides of the two support columns, a lifting plate slidingly connected between the opposite sides of the two support columns, the internal rotation of the support columns is connected to a lifting structure, the lifting structure comprises a moving mechanism, the moving mechanism is rotatably connected to the inside of the support columns, the surface of the moving mechanism is in sliding contact with the inner wall of the lifting plate, the surface of the moving mechanism on the left side is sleeved with a transmission mechanism, the moving mechanism on the left side is transmission-connected to the moving mechanism on the right side through the transmission mechanism, the bottom of the moving mechanism is bolted with a force-boosting structure, the force-boosting structure comprises a winding mechanism, the winding mechanism is bolted to the moving mechanism, the top of the lifting plate is bolted to the lifting mechanism, and the top of the lifting mechanism is bolted to the moving mechanism.

[0006] The present invention is further configured as follows: the moving mechanism includes a screw, which is rotatably connected to the inside of the support columns on both sides, the top of the screw on the left extends to the top of the left support column and is bolted to a reduction motor, the surface of the screw is threadedly connected to a screw block, and a moving plate is welded on the side of the screw block away from the inner wall of the support column, the moving plate is bolted to the winding mechanism and the lifting mechanism respectively, the transmission mechanism is sleeved on the surface of the screw, and the inside of the screw block is slidably connected to a sliding rod, and the top and bottom of the sliding rod are welded to the inner wall of the support column.

[0007] The present invention is further configured as follows: the transmission mechanism includes a first gear, the first gear is sleeved on the surface of the left screw, the surface of the first gear is meshed with a transmission chain, the right side inside the transmission chain is meshed with a second gear, the second gear is sleeved on the surface of the right screw, the rear side of the transmission chain is in close contact with a tensioner, and the tensioner is threadedly connected to the connecting column.

[0008] The present invention is further configured as follows: the pulling plate is sleeved on the surface of the slide rod, and sliding holes used in conjunction with the slide rod are provided on both sides of the inside of the pulling plate and the inside of the screw block.

[0009] The present invention is further configured as follows: the winding mechanism includes a fixed shell, the fixed shell is bolted to the movable plate, a dual-axis motor is bolted to the interior of the fixed shell, a transmission shaft is bolted to the output end of the dual-axis motor, a reel is sleeved on the surface of the transmission shaft, and the reel is used in conjunction with the lifting mechanism.

[0010] The present invention is further configured as follows: a bolt is welded on the top of the fixed shell, the top of the bolt extends to the top of the movable plate, a nut is threadedly connected to the surface of the bolt, an annular block is sleeved on the surface of the bolt, and the nut and the annular block are in close contact with the movable plate on one side close to the movable plate.

[0011] The present invention is further configured as follows: support seats are welded on both sides of the fixed shell, a bearing seat is welded on the top of the support seat, and the bearing seat is rotatably connected to the transmission shaft.

[0012] The present invention is further configured as follows: the lifting mechanism includes a movable pulley and a fixed pulley, the surfaces of the movable pulley and the fixed pulley are both sleeved with a retaining frame, the top of the retaining frame is bolted to the movable plate, and the bottom of the bottom of the retaining frame is welded with a mounting plate, and the mounting plate is bolted to the lifting plate, a high-strength steel wire rope is wound around the inside of the movable pulley, one end of the high-strength steel wire rope is hung with the movable plate, and the other end of the high-strength steel wire rope passes through the top of the inside of the fixed pulley and is wound around the surface of the drum.

[0013] The present invention is further configured as follows: a hook is sleeved on one end of the high-strength steel wire rope close to the movable plate, a lifting ring is sleeved on the surface of the hook, the lifting ring is bolted to the movable plate, and the high-strength steel wire rope is hung on the movable plate through the hook and the lifting ring.

[0014] A force-increasing method for a force-increasing device of a tensile machine, comprising the following steps:

[0015] S1. After the test component is fixed in the test position, the moving mechanism is activated. Under the action of the transmission mechanism, the moving mechanisms on both sides operate synchronously, thereby driving the winding mechanism, the lifting mechanism, and the lifting plate to move synchronously. The lifting plate then drives the test component to perform the first stage of the tensile test;

[0016] S2. When the loading capacity of the moving mechanism reaches its upper limit and the tensile test cannot be performed, the winding mechanism will begin to intervene. The winding mechanism will gradually drive the lifting mechanism to move, so that the lifting plate will again drive the test component to perform the second stage of tensile testing, thereby increasing the loading capacity of the moving mechanism.

[0017] In summary, the present invention has the following beneficial effects:

[0018] 1. By setting up the main structure and the lifting structure, and through the coordinated use of the moving mechanism and the transmission mechanism, the moving mechanisms on both sides can work synchronously, thereby driving the winding mechanism, the pulling mechanism and the pulling plate to move synchronously. When the pulling plate drives the test component to perform the first stage of the tensile test, the test component within the loading capacity range of the moving mechanism can be tested;

[0019] 2. By setting up a force-enhancing structure and using the winding mechanism and the lifting mechanism in coordination, when the test component exceeds the upper limit of the loading capacity of the moving mechanism, the winding mechanism can drive the lifting mechanism to move, so that the lifting plate can again drive the test component to perform the second stage of tensile testing, thereby increasing the loading capacity of the moving mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0022] Figure 3 is a cross-sectional view of the support column and the connecting column of the present invention;

[0023] Figure 4 It is a schematic structural diagram of the mobile mechanism of the present invention;

[0024] Figure 5 is a top view of the transmission mechanism of the present invention;

[0025] Figure 6It is a schematic diagram of the force-amplifying structure of the present invention;

[0026] Figure 7 It is a structural schematic diagram of the winding mechanism of the present invention;

[0027] Figure 8 It is a structural schematic diagram of the lifting mechanism of the present invention;

[0028] Figure 9 It is a flow chart of the force-increasing method of the force-increasing device of the tensile machine of the present invention.

[0029] Figure 1: Main structure; 101: Bearing seat; 102: Support column; 103: Connecting column; 104: Lifting plate; 2: Lifting structure; 201: Moving mechanism; 2011: Screw; 2012: Reducer motor; 2013: Screw block; 2014: Moving plate; 2015: Sliding rod; 202: Transmission mechanism; 2021: First gear; 2022: Transmission chain; 2023: Second gear; 2024: Tensioner; 3: Force-boosting structure; 301, winding mechanism; 3011, fixed shell; 3012, dual-axis motor; 3013, transmission shaft; 3014, reel; 302, lifting mechanism; 3021, movable pulley; 3022, fixed pulley; 3023, retaining frame; 3024, mounting plate; 3025, high-strength steel wire rope; 4, sliding hole; 5, bolt; 6, nut; 7, ring block; 8, support seat; 9, bearing seat; 10, hook; 11, lifting ring. DETAILED DESCRIPTION

[0030] The present invention will be further described in detail below with reference to the accompanying drawings.

[0031] Example 1:

[0032] refer to Figure 1-5A force-increasing device for a tensile machine includes a main structure 1, which includes a bearing seat 101. Both sides of the top of the bearing seat 101 are bolted with support columns 102. A connecting column 103 is bolted to the top between the two opposite sides of the two support columns 102. A lifting plate 104 is slidably connected between the opposite sides of the two support columns 102. The interior of the support column 102 is rotatably connected to a lifting structure 2. The lifting structure 2 includes a moving mechanism 201. The moving mechanism 201 is rotatably connected to the interior of the support column 102. The surface of the moving mechanism 201 is in sliding contact with the inner wall of the lifting plate 104. The surface of the side moving mechanism 201 is sleeved with a transmission mechanism 202, and the left moving mechanism 201 is connected to the right moving mechanism 201 through the transmission mechanism 202. By setting the main structure 1 and the lifting structure 2, the moving mechanisms 201 on both sides can be used in coordination with the transmission mechanism 202, thereby driving the winding mechanism 301, the lifting mechanism 302 and the lifting plate 104 to move synchronously, and making the lifting plate 104 drive the test component to perform the first stage of tensile testing, and the test component within the loading capacity of the moving mechanism 201 can be tested.

[0033] like Figure 3 and Figure 4 As shown, the moving mechanism 201 includes a screw 2011, which is rotatably connected to the inside of the support columns 102 on both sides. The top of the left screw 2011 extends to the top of the left support column 102 and is bolted to a reduction motor 2012. The surface of the screw 2011 is threadedly connected to a screw block 2013. A moving plate 2014 is welded to the side of the screw block 2013 away from the inner wall of the support column 102. The moving plate 2014 is bolted to the winding mechanism 301 and the pulling mechanism 302 respectively. The transmission mechanism 202 is sleeved on the surface of the screw 2011, and the interior of the screw block 2013 is slidably connected to the sliding rod 20 15. The top and bottom of the slide bar 2015 are welded to the inner wall of the support column 102. By setting the moving mechanism 201, after the test component is fixed in the test position, the left screw rod 2011 can be driven to rotate by the reduction motor 2012. Under the action of the transmission mechanism 202, the screw rods 2011 on both sides rotate synchronously, so that the moving plate 2014 and the screw block 2013 can rise smoothly. The movement of the moving plate 2014 simultaneously drives the winding mechanism 301, the lifting mechanism 302 and the lifting plate 104 to move synchronously, so that the test component can be tested within the loading capacity of the moving mechanism 201.

[0034] like Figure 3 and Figure 5As shown, the transmission mechanism 202 includes a first gear 2021, the first gear 2021 is sleeved on the surface of the left screw 2011, the surface of the first gear 2021 is meshed with a transmission chain 2022, the right side of the transmission chain 2022 is meshed with a second gear 2023, the second gear 2023 is sleeved on the surface of the right screw 2011, the rear side of the transmission chain 2022 is in close contact with a tensioner 2024, the tensioner 2024 is threadedly connected to the connecting column 103, and the transmission mechanism 202 is provided. 02. When the left screw rod 2011 rotates, the first gear 2021 will be driven to rotate at the same time. Through the meshing connection between the first gear 2021 and the transmission chain 2022, the transmission chain 2022 will drive the second gear 2023 to rotate, so that the screw rods 2011 on both sides can rotate synchronously. At the same time, under the action of the tensioner 2024, the transmission chain 2022 will not be loose, so that the screw block 2013 and the movable plate 2014 can move smoothly, avoiding tilting during the pulling process.

[0035] like Figure 4 As shown, the pulling plate 104 is sleeved on the surface of the sliding rod 2015, and sliding holes 4 for use with the sliding rod 2015 are provided on both sides of the inside of the pulling plate 104 and the inside of the screw block 2013. By sliding the pulling plate 104 on the surface of the sliding rod 2015, the moving trajectory of the pulling plate 104 can be limited to ensure its smooth movement. By setting the sliding hole 4, the pulling plate 104 can be easily moved on the surface of the sliding rod 2015.

[0036] Brief description of the usage process: After the test component is fixed in the test position, the left screw 2011 can be driven to rotate by the reduction motor 2012. The rotation of the left screw 2011 will also drive the first gear 2021 to rotate. Through the meshing connection between the first gear 2021 and the transmission chain 2022, the transmission chain 2022 will drive the second gear 2023 to rotate, so that the screws 2011 on both sides can rotate synchronously, so that the screw block 2013 drives the moving plate 2014 to move on the surface of the screw 2011 and the sliding rod 2015, so that the moving plate 2014 moves and drives the winding mechanism 301, the lifting mechanism 302 and the lifting plate 104 to move synchronously. Therefore, the test component can be tested within the loading capacity of the moving mechanism 201.

[0037] Example 2:

[0038] refer to Figure 6-8The bottom of the mobile mechanism 201 is bolted with a force-increasing structure 3, and the force-increasing structure 3 includes a winding mechanism 301, which is bolted to the mobile mechanism 201. The top of the lifting plate 104 is bolted with a lifting mechanism 302, and the top of the lifting mechanism 302 is bolted to the mobile mechanism 201. By setting the force-increasing structure 3, through the coordinated use of the winding mechanism 301 and the lifting mechanism 302, when the test component exceeds the upper limit of the loading capacity of the mobile mechanism 201, the winding mechanism 301 can drive the lifting mechanism 302 to move, so that the lifting plate 104 drives the test component again to perform the second stage of tensile test, thereby increasing the loading capacity of the mobile mechanism 201.

[0039] like Figure 6 and Figure 7 As shown, the winding mechanism 301 includes a fixed shell 3011, which is bolted to the movable plate 2014. The interior of the fixed shell 3011 is bolted with a dual-axis motor 3012, and the output end of the dual-axis motor 3012 is bolted with a transmission shaft 3013. The surface of the transmission shaft 3013 is sleeved with a reel 3014, and the reel 3014 is used in conjunction with the lifting mechanism 302. By setting the winding mechanism 301, when the loading capacity of the movable mechanism 201 reaches the upper limit, the dual-axis motor 3012 can be operated, so that the dual-axis motor 3012 drives the transmission shaft 3013 to rotate, and the transmission shaft 3013 will drive the reel 3014 to rotate, so that the reel 3014 will reel the lifting mechanism 302, which can drive the lifting mechanism 302 to drive the lifting plate 104 to move again.

[0040] like Figure 7 As shown, a bolt 5 is welded to the top of the fixed shell 3011, and the top of the bolt 5 extends to the top of the movable plate 2014. The surface of the bolt 5 is threadedly connected to a nut 6, and the surface of the bolt 5 is sleeved with an annular block 7. The nut 6 and the annular block 7 are in close contact with the movable plate 2014 on one side close to the movable plate 2014. By arranging the bolt 5, the nut 6 and the annular block 7, the fixed shell 3011 can be easily fixed in the use position, thereby achieving the effect of ensuring the smooth operation of the dual-axis motor 3012.

[0041] like Figure 7 As shown, support seats 8 are welded on both sides of the fixed shell 3011, and bearing seats 9 are welded on the top of the support seats 8. The bearing seats 9 are rotatably connected to the transmission shaft 3013. By setting the support seats 8 and the bearing seats 9, the support seats 8 and the bearing seats 9 can support the transmission shaft 3013, so that the transmission shaft 3013 can rotate stably.

[0042] like Figure 8As shown, the lifting mechanism 302 includes a movable pulley 3021 and a fixed pulley 3022, the surfaces of the movable pulley 3021 and the fixed pulley 3022 are sleeved with a retaining frame 3023, the top retaining frame 3023 is bolted to the movable plate 2014, the bottom of the bottom retaining frame 3023 is welded with a mounting plate 3024, the mounting plate 3024 is bolted to the lifting plate 104, a high-strength steel wire rope 3025 is wound around the inside of the movable pulley 3021, one end of the high-strength steel wire rope 3025 is hung with the movable plate 2014, the other end of the high-strength steel wire rope 3025 passes through the top of the fixed pulley 3022 and is wound around the surface of the drum 3014, A lifting mechanism 302 is installed. When the drum 3014 rotates, the high-strength steel wire rope 3025 will be gradually wound up, which will drive the fixed pulley 3022 and the movable pulley 3021 to rotate inside the retaining frame 3023. In the process of gradual winding, the movable pulley 3021 will be driven to rise gradually. At this time, the force borne by the high-strength steel wire rope 3025 is 1 / 2 of the force borne by the test component, which can not only achieve the effect of force increase, but also reduce the load of the dual-axis motor 3012 and improve its service life. In addition, the number of the movable pulley 3021 and the fixed pulley 3022 can be increased according to usage to further increase the loading capacity.

[0043] like Figure 8 As shown, the high-strength steel wire rope 3025 is sleeved with a hook 10 at one end close to the movable plate 2014, and a lifting ring 11 is sleeved on the surface of the hook 10. The lifting ring 11 is bolted to the movable plate 2014, and the high-strength steel wire rope 3025 is hung on the movable plate 2014 through the hook 10 and the lifting ring 11. By setting the hook 10 and the lifting ring 11, the high-strength steel wire rope 3025 can be easily connected to the movable plate 2014, so that the movable plate 2014 can synchronously drive it to move, and it can also facilitate the movement of the movable pulley 3021.

[0044] The use process is briefly described as follows: when the loading capacity of the moving mechanism 201 reaches the upper limit, the dual-axis motor 3012 can be operated, so that the dual-axis motor 3012 drives the transmission shaft 3013 to rotate, and the transmission shaft 3013 drives the reel 3014 to rotate, so that the reel 3014 gradually reels the high-strength steel wire rope 3025. The reeling will simultaneously drive the fixed pulley 3022 and the movable pulley 3021 to rotate inside the retaining frame 3023. In the process of gradual reeling, the movable pulley 3021 will be driven to gradually rise. At this time, the force borne by the high-strength steel wire rope 3025 is 1 / 2 of the force borne by the test component, which can not only achieve the effect of force increase, but also reduce the load of the dual-axis motor 3012 and improve its service life. In addition, the number of movable pulleys 3021 and fixed pulley 3022 can be increased according to usage to further increase the loading capacity.

[0045] This specific embodiment is merely an explanation of the present invention and is not intended to limit the present invention. After reading this specification, those skilled in the art may make non-creative modifications to this embodiment as needed. However, as long as such modifications are within the scope of the claims of the present invention, they are protected by patent law.

Claims

1. A force-increasing device for a tensile machine, comprising a main structure (1), characterized in that: The main structure (1) comprises a bearing seat (101), support columns (102) are bolted to both sides of the top of the bearing seat (101), a connecting column (103) is bolted to the top between the two opposite sides of the two support columns (102), a lifting plate (104) is slidably connected between the two opposite sides of the two support columns (102), the interior of the support columns (102) is rotatably connected to a lifting structure (2), and the lifting structure (2) comprises a moving mechanism (201), the moving mechanism (201) is rotatably connected to the interior of the support columns (102), and the surface of the moving mechanism (201) is in contact with the lifting plate ( 104), the surface of the movable mechanism (201) on the left is sleeved with a transmission mechanism (202), the movable mechanism (201) on the left is transmission-connected to the movable mechanism (201) on the right through the transmission mechanism (202), the bottom of the movable mechanism (201) is bolted with a force-increasing structure (3), the force-increasing structure (3) includes a winding mechanism (301), the winding mechanism (301) is bolted to the movable mechanism (201), the top of the lifting plate (104) is bolted with a lifting mechanism (302), and the top of the lifting mechanism (302) is bolted to the movable mechanism (201); The moving mechanism (201) includes a screw rod (2011), the screw rod (2011) is rotatably connected to the inside of the support columns (102) on both sides, the top of the left screw rod (2011) extends to the top of the left support column (102) and is bolted to a reduction motor (2012), the surface of the screw rod (2011) is threadedly connected to a screw block (2013), the side of the screw block (2013) away from the inner wall of the support column (102) is welded with a moving plate (214), the moving plate (214) is bolted to the winding mechanism (301) and the pulling mechanism (302), respectively, the transmission mechanism (202) is sleeved on the surface of the screw rod (2011), the inside of the screw block (2013) is slidably connected to a sliding rod (215), and the top and bottom of the sliding rod (2015) are both welded to the inner wall of the support column (102); The winding mechanism (301) comprises a fixed shell (3011), the fixed shell (3011) being bolted to the movable plate (2014), a dual-axis motor (3012) being bolted inside the fixed shell (3011), a transmission shaft (3013) being bolted to the output end of the dual-axis motor (3012), a reel (3014) being sleeved on the surface of the transmission shaft (3013), and the reel (3014) being used in conjunction with the lifting mechanism (302); The lifting mechanism (302) comprises a movable pulley (3021) and a fixed pulley (3022), the surfaces of the movable pulley (3021) and the fixed pulley (3022) are both sleeved with a retaining frame (3023), the top retaining frame (3023) is bolted to the movable plate (2014), and the bottom of the bottom retaining frame (3023) is welded with a mounting plate (3024), and the mounting plate (3024) is bolted to the lifting plate (104), a high-strength steel wire rope (3025) is wound around the inside of the movable pulley (3021), one end of the high-strength steel wire rope (3025) is hung with the movable plate (2014), and the other end of the high-strength steel wire rope (3025) passes through the top of the fixed pulley (3022) and is wound around the surface of the reel (3014).

2. A force amplifying device for a tensile machine according to claim 1, characterized in that: The transmission mechanism (202) comprises a first gear (2021), the first gear (2021) being sleeved on the surface of the left screw (2011), the surface of the first gear (2021) being meshed with a transmission chain (2022), the right side of the interior of the transmission chain (2022) being meshed with a second gear (2023), the second gear (2023) being sleeved on the surface of the right screw (2011), the rear side of the transmission chain (2022) being in close contact with a tensioner (2024), and the tensioner (2024) being threadedly connected to the connecting column (103).

3. The force amplifying device of a tensile machine according to claim 1, characterized in that: The lifting plate (104) is sleeved on the surface of the sliding rod (2015), and sliding holes (4) for use with the sliding rod (2015) are provided on both sides of the interior of the lifting plate (104) and the interior of the screw block (2013).

4. A force amplifying device for a tensile machine according to claim 1, characterized in that: A bolt (5) is welded to the top of the fixed shell (3011), the top of the bolt (5) extends to the top of the movable plate (2014), a nut (6) is threadedly connected to the surface of the bolt (5), and an annular block (7) is sleeved on the surface of the bolt (5), and the nut (6) and the annular block (7) are in close contact with the movable plate (2014) on one side close to the movable plate (2014).

5. The force amplifying device of a tensile machine according to claim 1, characterized in that: Support seats (8) are welded to both sides of the fixed shell (3011), a bearing seat (9) is welded to the top of the support seat (8), and the bearing seat (9) is rotatably connected to the transmission shaft (3013).

6. The force amplifying device of a tensile machine according to claim 1, characterized in that: One end of the high-strength steel wire rope (3025) close to the movable plate (2014) is sleeved with a hook (10), a surface of the hook (10) is sleeved with a lifting ring (11), the lifting ring (11) is bolted to the movable plate (2014), and the high-strength steel wire rope (3025) is hung on the movable plate (2014) via the hook (10) and the lifting ring (11).

7. A force amplification method for a tensile machine force amplification device according to any one of claims 1 to 6, characterized in that: The following steps are included: S1. After the test component is fixed at the test position, the moving mechanism (201) is operated, and under the action of the transmission mechanism (202), the moving mechanisms (201) on both sides are operated synchronously, thereby driving the winding mechanism (301), the lifting mechanism (302) and the lifting plate (104) to move synchronously, and then the lifting plate (104) drives the test component to perform the first stage of the tensile test; S2. When the loading capacity of the moving mechanism (201) reaches the upper limit and the tensile test cannot be performed, the winding mechanism (301) will begin to intervene. The winding mechanism (301) will gradually drive the lifting mechanism (302) to move, so that the lifting plate (104) will again drive the test component to perform the second stage of tensile test, thereby increasing the loading capacity of the moving mechanism (201).

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