Device for detecting tensile strength of heavy-twisted covering yarn

Abstract

The invention belongs to the technical field of heavy-twist covering yarn detection, and discloses a heavy-twist covering yarn tensile strength detection device which comprises a supporting table and further comprises a detection device body. The lifting sliding frames are arranged on the two sides of the top of the supporting table; the lifting seat is mounted on the inner side of the lifting sliding frame in a sliding manner; the flattening devices are arranged on the two sides of the lifting seat; according to the technical scheme, by arranging the pressing and flattening plate, the linkage assemblies and the driving assemblies, when the top end parts of the driving assemblies are started, the output ends of the top parts of the driving assemblies can drive the bottom end parts to move, and therefore the linkage assemblies on the two sides can be driven to integrally deflect; the two movable limiting frames, the pressing and flattening plate and the supporting frame can be pulled to move oppositely, then the middle of the heavy-twist covering yarn can be clamped, the purpose of automatically clamping and flattening the middle of the heavy-twist covering yarn is achieved, wrinkles are avoided, and meanwhile operation is convenient and fast.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of strong twist core spun yarn detection, and specifically relates to a strong twist core spun yarn tensile strength detection device. BACKGROUND

[0002] The strong twist core spun yarn tensile strength detection device is a special equipment for evaluating the resistance to rupture of strong twist core spun yarn under the action of tensile force, and the design needs to combine the structure characteristics of the core spun yarn and the tensile strength test standard to ensure that the detection result is accurate and reliable. Usually, a tensile testing machine is adopted. The equipment can accurately measure the maximum tensile capacity (breaking strength) and the ultimate elongation capacity (breaking elongation) of the yarn by applying tensile load until the yarn breaks. It is a core tool for evaluating the mechanical properties of strong twist core spun yarn. The specific functions are as follows:

[0003] 1. Tensile strength test: by applying gradually increasing tensile force, the maximum force value when the yarn breaks is recorded to obtain the tensile strength of the yarn;

[0004] 2. Breaking elongation test: during the tensile process, the elongation amount when the yarn breaks is recorded to calculate the breaking elongation rate, reflecting the elastic properties of the yarn,

[0005] The working principle is that the servo motor drives the cross beam to move to apply axial tensile force to the sample. The sensor collects force value and deformation data in real time. After being processed by the controller, a force-elongation curve is generated. Finally, the mechanical property indexes of the material are calculated, for example, the electronic universal testing machine adopts closed-loop control technology. When the sample approaches breaking, the software automatically switches to force control mode to avoid data distortion caused by rapid loading.

[0006] The existing tensile testing machine needs to place the two ends of the strong twist core spun yarn on the clamping jaws of the clamping device to realize clamping and fixing for stretching before stretching the strong twist core spun yarn. However, manual placement and clamping can cause wrinkles at the two ends of the strong twist core spun yarn, which can affect the accuracy of subsequent tensile strength detection. Therefore, it needs to be improved. SUMMARY

[0007] To solve the problems in the background art, the application provides a strong twist core spun yarn tensile strength detection device, which has the advantages of convenient automatic clamping and rolling flattening.

[0008] In order to achieve the above object, the present application provides the following technical scheme: A strong twist core yarn tensile strength detection device, comprising a support table, further comprising: a lifting sliding frame arranged on both sides of the top of the support table; a lifting seat slidingly installed on the inner side of the lifting sliding frame; a flattening device arranged on both sides of the lifting seat; wherein the flattening device comprises a support frame movably installed on both sides of the bottom of the lifting seat, a compression flat plate arranged in the middle of the inner end of both sides of the support frame, a moving limiting frame fixedly installed on the top of the support frame, the top end of the moving limiting frame extending to the top of the lifting seat, a linkage assembly arranged on the inner side of the back of the moving limiting frame in the lifting seat, and a driving assembly arranged between the linkage assemblies.

[0009] Preferably, the linkage assembly comprises a gear rod, a driving connection arm, a limiting sliding rod and a driving sliding block.

[0010] The gear rod is movably sleeved on both sides of the middle part of the top end of the lifting seat, the driving connection arm is fixedly sleeved on the surface of the upper end of the gear rod, the limiting sliding rod is fixedly installed in the inner part of the top rear end of the moving limiting frame, and the driving sliding block is slidingly connected to the surface of the limiting sliding rod.

[0011] Preferably, the outer end of the driving connection arm is hinged to the inner side of the limiting sliding rod.

[0012] Preferably, the driving assembly comprises a driving gear block, a driving motor and a rotating linkage arm.

[0013] The driving gear block is slidingly connected to the top of the lifting seat, and the driving gear block is located on the inner side of the gear rod, the driving motor is fixedly installed in the middle part of the top end of the lifting seat, and the rotating linkage arm is fixedly sleeved on the output end of the driving motor.

[0014] Preferably, the bottom end of one side of the rotating linkage arm extends to the inner groove of the top end of the driving gear block, and the bottom end of one side of the rotating linkage arm is slidingly connected with the inner groove of the top of the driving gear block.

[0015] Preferably, the bottom of the outer side of the driving gear block is engaged with the bottom surface of the gear rod.

[0016] Preferably, the middle part of the bottom end of the lifting seat and the middle part of the top end of the support table are both provided with clamping devices, and the middle part of one side of the lifting sliding frame is provided with a controller.

[0017] Preferably, the middle part of the compression flat plate is provided with a hydraulic assembly, and the hydraulic assembly comprises a first hydraulic cylinder, a piston trigger rod and a partition plate.

[0018] The first liquid cylinder is arranged at the middle of the pressing and flattening plate, the piston trigger rod is movably arranged in the first liquid cylinder, and the partition plate is fixedly arranged at the middle of the outer side of the piston trigger rod.

[0019] Preferably, the inner cavity of the support frame is provided with a rolling device located at the outer side of the pressing and flattening plate, the rolling device comprising a second liquid cylinder, a piston rod, a connecting spring, a rolling roller and an oil channel.

[0020] The second liquid cylinder is fixedly arranged in the inner cavity of the support frame and located at the outer side of the first liquid cylinder, the piston rod is movably arranged above and below the inner cavity of the second liquid cylinder, the piston rod is elastically connected to the outer end of the inner wall of the second liquid cylinder through the connecting spring, the rolling roller is arranged at the outer end of the piston rod, and the middle of the inner side of the second liquid cylinder is connected to the first liquid cylinder through the oil channel.

[0021] Preferably, the outer side of the rolling roller is provided with a same distance assembly, the same distance assembly comprising a fixed frame, a rotating plate and a linkage shaft.

[0022] The fixed frame is fixedly arranged at the outer side of the rolling roller, the rotating plate is movably sleeved at the outer side of the pressing and flattening plate and located at the outer side of the fixed frame, the linkage shaft is fixedly sleeved at the inner ends of the rotating plate, and the inner end of the linkage shaft extends into the inner cavity of the fixed frame.

[0023] Compared with the prior art, the beneficial effects of the present application are as follows:

[0024] The above technical solution sets the pressing and flattening plate, the linkage assembly and the driving assembly, when the top part of the driving assembly is started, the output end of the top part of the driving assembly drives the bottom part to move, thereby driving the linkage assemblies on both sides to deflect and move, so as to pull the two moving limiting frames, the pressing and flattening plate and the support frame to move towards each other, and then the middle part of the strong twist core yarn can be clamped, achieving the purpose of automatic clamping and flattening of the middle part of the strong twist core yarn, avoiding wrinkles, and being convenient and fast to operate.

[0025] The liquid driven assembly, the rolling device and the same distance assembly are arranged, when the pressing and flattening plate drives the strong twist core yarn in the middle to be clamped and flattened, the output end of the liquid driven assembly is compressed into the inner wall of the liquid driven assembly, so that the liquid in the liquid driven assembly is introduced into the inner wall of the rolling device, and then the outer end part of the rolling device moves away, and the same distance assembly limits the same distance movement of the outer end part of the rolling device, thereby rolling the strong twist core yarn on both sides, and the distance of the rolling device moving out of the end of the strong twist core yarn between the two clamping devices can be judged, so that the ends of the strong twist core yarn of different lengths can be smoothly clamped, greatly improving the use range. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 Structure diagram of the support frame of the application;

[0027] Figure 2 Structure diagram of the support frame of the application;

[0028] Figure 3 Structure diagram of the support frame of the application;

[0029] Figure 4 Structure diagram of the support frame of the application; Figure 3 Structure diagram of the support frame of the application;

[0030] Figure 5 Structure diagram of the support frame of the application;

[0031] Figure 6 Structure diagram of the support frame of the application;

[0032] Figure 7 Structure diagram of the support frame of the application; Figure 6 Structure diagram of the support frame of the application;

[0033] Figure 8 Structure diagram of the support frame of the application.

[0034] In the figure: 1, support table; 2, lifting sliding frame; 3, controller; 4, lifting seat; 5, flattening device; 501, support frame; 502, pressing flat plate; 503, moving limiting frame; 504, linkage assembly; 5041, gear rod; 5042, driving connecting arm; 5043, limiting sliding rod; 5044, driving sliding block; 505, driving assembly; 5051, driving gear block; 5052, driving motor; 5053, rotating linkage arm; 6, hydraulic assembly; 601, first hydraulic cylinder; 602, piston trigger rod; 603, partition plate; 7, rolling flattening device; 701, second hydraulic cylinder; 702, piston rod; 703, connecting spring; 704, rolling roller; 705, oil channel; 8, same distance assembly; 801, fixed frame; 802, rotating plate; 803, linkage shaft; 9, clamping device. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the application.

[0036] As Figures 1 to 8As shown, the present application provides a kind of strong twist core yarn tensile strength detection device, including support table 1, also include;Lifting sliding frame 2, lifting sliding frame 2 is set to the two sides of support table 1 top;Lifting seat 4, lifting seat 4 is slidably installed in the inner side of lifting sliding frame 2;Flattening device 5, flattening device 5 is set to the two sides of lifting seat 4;Wherein, flattening device 5 includes the support frame 501 of being movably installed in the bottom of lifting seat 4 two sides, the middle part of the inner end of support frame 501 two sides is provided with the compression flat plate 502, the top of support frame 501 is fixedly installed with mobile limiting frame 503, the top of mobile limiting frame 503 extends to the top of lifting seat 4, the inside of lifting seat 4 is provided with the linkage assembly 504 located in the back of mobile limiting frame 503 inner side, the top of lifting seat 4 is provided with the drive assembly 505 located between linkage assembly 504.

[0037] By starting drive assembly 505, to drive linkage assembly 504 linkage two mobile limiting frame 503, support frame 501 and compression flat plate 502 occur relative movement, at this time, by two compression flat plate 502 relative can the middle part of strong twist core yarn is clamped flat.

[0038] As Figure 4 As shown, linkage assembly 504 includes gear bar 5041, drive connecting arm 5042, limiting sliding rod 5043 and drive sliding block 5044;

[0039] Gear bar 5041 movably sleeve joint in the middle part of the top end of lifting seat 4 two sides, drive connecting arm 5042 is fixedly sleeved on the surface of the upper end of gear bar 5041, limiting sliding rod 5043 is fixedly installed in the inside of the top rear end of mobile limiting frame 503, drive sliding block 5044 is slidably connected to the surface of limiting sliding rod 5043.

[0040] The above scheme is adopted: by setting limiting sliding rod 5043, when drive sliding block 5044 slides in the inside of mobile limiting frame 503, it will move forward and backward along the surface of limiting sliding rod 5043 in horizontal direction, to limit the purpose of drive sliding block 5044 movement.

[0041] As Figure 4 As shown, the outer end of drive connecting arm 5042 is hinged to the inner side of limiting sliding rod 5043.

[0042] The above scheme is adopted: when gear bar 5041 and drive connecting arm 5042 are driven to rotate as a whole, drive connecting arm 5042 outer end will pull drive sliding block 5044 to slide on the surface of limiting sliding rod 5043, so that two mobile limiting frame 503, support frame 501 and compression flat plate 502 occur relative movement, can realize the middle part of strong twist core yarn is clamped, to the effect of the middle part of strong twist core yarn is flattened.

[0043] As shown in Figure 4 , the driving assembly 505 includes a driving gear block 5051, a driving motor 5052, and a rotating linkage arm 5053.

[0044] The driving gear block 5051 is slidingly connected to the top of the lifting seat 4, and the driving gear block 5051 is located on the inner side of the gear rod 5041. The driving motor 5052 is fixedly installed at the middle of the top end of the lifting seat 4. The rotating linkage arm 5053 is fixedly sleeved on the output end of the driving motor 5052.

[0045] The bottom end of one side of the rotating linkage arm 5053 extends to the inner groove at the top end of the driving gear block 5051, and the bottom end of one side of the rotating linkage arm 5053 is slidingly connected with the inner groove at the top of the driving gear block 5051.

[0046] By adopting the above scheme: by providing the rotating linkage arm 5053, when the driving motor 5052 operates, the output end of the driving motor 5052 drives the rotating linkage arm 5053 to rotate, so that the bottom of one side of the rotating linkage arm 5053 slides in the inner groove at the top of the driving gear block 5051, thereby driving the driving gear block 5051 to move forward and backward, which provides power for the movement of the driving gear block 5051.

[0047] As shown in Figure 4 , the bottom of the outer side of the driving gear block 5051 is engaged with the bottom surface of the gear rod 5041.

[0048] By adopting the above scheme: by providing the driving gear block 5051, when the driving gear block 5051 is driven to move, the teeth at the bottom of the outer side of the driving gear block 5051 drive the teeth at the bottom surface of the gear rod 5041, thereby driving the gear rod 5041 to rotate, which in turn drives the driving connecting arm 5042 to rotate synchronously, thereby achieving the purpose of driving the two moving limiting frames 503, the supporting frame 501, and the pressing and flattening plate 502 to move towards each other.

[0049] As shown in Figure 1 , the middle of the bottom end of the lifting seat 4 and the middle of the top end of the supporting table 1 are both provided with clamping devices 9, and the middle of one side of the lifting sliding frame 2 is provided with a controller 3.

[0050] By adopting the above scheme: by the design of the clamping device 9, the two sides of the strong twist core spun yarn can be clamped, and then the controller 3 is controlled to drive the lifting seat 4 to move upwards, thereby stretching the strong twist core spun yarn, which achieves the purpose of detecting the tensile strength of the strong twist core spun yarn.

[0051] As shown in Figure 5 and Figure 8 , the middle of the pressing and flattening plate 502 is provided with a hydraulic assembly 6, and the hydraulic assembly 6 includes a first hydraulic cylinder 601, a piston trigger rod 602, and a partition plate 603.

[0052] The first hydraulic cylinder 601 is located in the middle of the pressing flat plate 502, the piston trigger rod 602 is movably installed inside the first hydraulic cylinder 601, and the partition plate 603 is fixedly installed in the middle of the outer side of the piston trigger rod 602.

[0053] Using the above solution: Through the design of the partition plate 603, the inner cavity of the first hydraulic cylinder 601 can be divided into two identical gas storage chambers, so that when the piston trigger rod 602 is squeezed into the piston trigger rod 602, the piston trigger rod 602 pushes the gas on both sides of the partition plate 603 to achieve the effect of equal discharge.

[0054] like Figure 7 As shown, the inner cavity of the support frame 501 is provided with a rolling device 7 located outside the pressing and flattening plate 502. The rolling device 7 includes a second hydraulic cylinder 701, a piston rod 702, a connecting spring 703, a rolling roller 704, and an oil passage 705.

[0055] The second hydraulic cylinder 701 is fixedly installed inside the support frame 501, and the second hydraulic cylinder 701 is located outside the first hydraulic cylinder 601. The piston rod 702 is movably installed above and below the inner cavity of the second hydraulic cylinder 701. The piston rod 702 is elastically connected to the outer end of the inner wall of the second hydraulic cylinder 701 through the connecting spring 703. The flat roller 704 is set at the outer end of the piston rod 702. The middle part of the inner side of the second hydraulic cylinder 701 is connected to the first hydraulic cylinder 601 through the oil passage 705.

[0056] Using the above scheme: By setting up an oil passage 705, when the gas inside the first hydraulic cylinder 601 located outside the partition plate 603 enters the second hydraulic cylinder 701 through the oil passage 705 in equal amounts, it can push the piston rod 702 and the rolling roller 704 to move in opposite directions. The opposite movement of the rolling roller 704 can achieve the effect of rolling and smoothing both sides of the high-twist core-spun yarn.

[0057] like Figure 5 As shown, a parallel component 8 is provided on the outer side of the flat roller 704. The parallel component 8 includes a fixed frame 801, a rotating plate 802 and a linkage shaft 803.

[0058] The fixed frame 801 is fixedly installed on the outside of the flat roller 704. The rotating plate 802 is movably sleeved on the outside of the pressing flat plate 502 and located on the outside of the fixed frame 801. The linkage shaft 803 is fixedly sleeved on the inside of both ends of the rotating plate 802, and the inner end of the linkage shaft 803 extends into the inside of the fixed frame 801.

[0059] Adopt the above scheme: by setting has the linkage shaft 803, when the rolling flat roller 704 occurs the movement of facing, will make the fixed frame 801 is driven to move away simultaneously, further make the fixed frame 801 extrude linkage shaft 803 inside, so that the rotating plate 802 is driven to rotate, because the length size of rotating plate 802 is fixed, can limit two fixed frame 801 realize the purpose of moving away the same distance, improve the rolling flat roller 704 to strong twist core spun yarn both sides the uniformity of rolling flat.

[0060] The working principle and use process of the application are as follows:

[0061] Firstly, the operator can clamp the top of the strong twist core spun yarn with the bottom of the upper clamping device 9, and then start the driving motor 5052 to drive the rotating linkage arm 5053 to rotate, so that the bottom of one end of the rotating linkage arm 5053 moves along the inner wall of the top of the driving gear block 5051, thereby driving the driving gear block 5051 to move forward as a whole, and because the surfaces on both sides of the bottom of the driving gear block 5051 are in meshing relationship with the surface of the bottom of the gear rod 5041, the gear rod 5041 can be driven to rotate as a whole, the rotation of the gear rod 5041 can drive the driving connecting arm 5042 to deflect, so that the driving sliding block 5044 connected to the end of the driving connecting arm 5042 slides along the surface of the limiting sliding rod 5043, and finally the two moving limiting frames 503, the supporting frame 501 and the pressing and flattening plate 502 can be driven to move towards each other, so that the two pressing and flattening plates 502 clamp and flatten the middle part of the strong twist core spun yarn.

[0062] Then, after the middle part of the strong twist core spun yarn is completely clamped and flattened by the two pressing and flattening plates 502, the two piston trigger rods 602 are extruded to move away and retract into the inner cavity of the first hydraulic cylinder 601, and then the piston trigger rods 602 push the gas on both sides of the partition plate 603 to be introduced into the second hydraulic cylinder 701 on both sides through the oil channel 705, so that the air pressure in the middle part of the second hydraulic cylinder 701 increases, thereby driving the piston rod 702 to move away, and simultaneously driving the two rolling flat rollers 704 to move away, and at this time, because the rolling flat rollers 704 move away, the linkage shaft 803 synchronously moves away, thereby extruding the linkage shaft 803 inside the two ends of the rotating plate 802 to slide, and the rotating plate 802 rotates, because the length of the rotating plate 802 does not change when it rotates, the overall movement of the fixed frame 801 and the rolling flat roller 704 can be limited to move away by the same distance, so that the rolling flat roller 704 can roll the strong twist core spun yarn on both sides, and finally the lifting seat 4 can be driven to move the strong twist core spun yarn downward, and the bottom of the strong twist core spun yarn can be moved into the inner part of the lower clamping device 9, and then the clamping device 9 can be started to clamp and flatten the bottom of the strong twist core spun yarn, and then the lifting seat 4 can be started to drive the upper clamping device 9 to move upward, thereby realizing the tensile strength detection of the strong twist core spun yarn.

[0063] It has to be noted that, in the present document, the terms "first", "second", etc. merely serve to identify different entities or actions from each other, without necessarily requiring or implying any actual relationship or order between these entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0064] While embodiments of the present application have been shown and described with reference to particular embodiments thereof, it will be understood by those skilled in the art that various changes in form and details can be made therein without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A strong twist core yarn tensile strength detection device, comprising a support table (1), characterized in that: Also includes; Lifting sliding frame (2), the lifting sliding frame (2) is provided on both sides of the top of the support table (1); Lifting seat (4), the lifting seat (4) is slidingly installed on the inner side of the lifting sliding frame (2); Flattening device (5), the flattening device (5) is provided on both sides of the lifting seat (4); Wherein, the flattening device (5) includes a support frame (501) movably installed on both sides of the bottom of the lifting seat (4), the middle part of the inner end of the support frame (501) is provided with a pressing flat plate (502), the top of the support frame (501) is fixedly installed with a moving limiting frame (503), the top end of the moving limiting frame (503) extends to the top of the lifting seat (4), the inside of the lifting seat (4) is provided with a linkage assembly (504) located on the back of the inner side of the moving limiting frame (503), the top of the lifting seat (4) is provided with a driving assembly (505) located between the linkage assembly (504).

2. The strong twist core yarn tensile strength detection device according to claim 1, characterized in that: The linkage assembly (504) includes a gear rod (5041), a driving connection arm (5042), a limiting sliding rod (5043) and a driving sliding block (5044); The gear rod (5041) is movably sleeved on both sides of the middle part of the top end of the lifting seat (4), the driving connection arm (5042) is fixedly sleeved on the surface of the upper end of the gear rod (5041), the limiting sliding rod (5043) is fixedly installed in the inside of the top rear end of the moving limiting frame (503), and the driving sliding block (5044) is slidingly connected to the surface of the limiting sliding rod (5043).

3. The strong twist core yarn tensile strength detection device according to claim 2, characterized in that: The outer end of the driving connection arm (5042) is hinged to the inner side of the limiting sliding rod (5043).

4. The strong twist core yarn tensile strength detection device according to claim 1, characterized in that: The driving assembly (505) includes a driving gear block (5051), a driving motor (5052) and a rotating linkage arm (5053); The driving gear block (5051) is slidingly connected to the top of the lifting seat (4), and the driving gear block (5051) is located on the inner side of the gear rod (5041), the driving motor (5052) is fixedly installed on the middle part of the top end of the lifting seat (4), and the rotating linkage arm (5053) is fixedly sleeved on the output end of the driving motor (5052).

5. The strong twist core yarn tensile strength detection device according to claim 4, characterized in that: The bottom end of one side of the rotating linkage arm (5053) extends to the inner groove of the top end of the driving gear block (5051), and the bottom end of one side of the rotating linkage arm (5053) is slidingly connected with the inner groove of the top of the driving gear block (5051).

6. The strong twist core yarn tensile strength detection device according to claim 4, characterized in that: The bottom of the outer side of the driving gear block (5051) is engaged with the bottom surface of the gear rod (5041).

7. The strong twist core yarn tensile strength detection device according to claim 1, characterized in that: The middle part of the bottom end of the lifting seat (4) and the middle part of the top end of the support table (1) are provided with clamping devices (9), and the middle part of one side of the lifting sliding frame (2) is provided with a controller (3).

8. The strong twist core yarn tensile strength detection device according to claim 1, characterized in that: The middle part of the pressing flat plate (502) is provided with a hydraulic assembly (6), and the hydraulic assembly (6) includes a first hydraulic cylinder (601), a piston trigger rod (602) and a partition plate (603); The first liquid cylinder (601) is arranged at the middle part of the pressing and smoothing plate (502), the piston trigger rod (602) is movably arranged in the first liquid cylinder (601), and the partition plate (603) is fixedly arranged at the middle part of the outer side of the piston trigger rod (602).

9. The strong twist core yarn tensile strength detection device according to claim 1, characterized in that: The support frame (501) is internally provided with a rolling and smoothing device (7) arranged at the outer side of the pressing and smoothing plate (502), the rolling and smoothing device (7) comprises a second liquid cylinder (701), a piston rod (702), a connecting spring (703), a rolling and smoothing roller (704) and an oil channel (705); The second liquid cylinder (701) is fixedly arranged in the support frame (501), and the second liquid cylinder (701) is arranged at the outer side of the first liquid cylinder (601), the piston rod (702) is movably arranged above and below the inner cavity of the second liquid cylinder (701), the piston rod (702) is elastically connected with the outer end of the inner wall of the second liquid cylinder (701) through the connecting spring (703), the rolling and smoothing roller (704) is arranged at the outer end of the piston rod (702), and the middle part of the inner side of the second liquid cylinder (701) is connected with the first liquid cylinder (601) through the oil channel (705).

10. The strong twist core yarn tensile strength detection device according to claim 9, characterized in that: The outer side of the rolling and smoothing roller (704) is provided with a same distance assembly (8), the same distance assembly (8) comprises a fixed frame (801), a rotating plate (802) and a linkage shaft (803); The fixed frame (801) is fixedly arranged at the outer side of the rolling and smoothing roller (704), the rotating plate (802) is movably sleeved at the outer side of the pressing and smoothing plate (502) and located at the outer side of the fixed frame (801), and the linkage shaft (803) is fixedly sleeved at the inner sides of the two ends of the rotating plate (802), and the inner end of the linkage shaft (803) extends to the inner side of the fixed frame (801).

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