Nylon thread strength testing device

Abstract

The invention discloses a chinlon thread strength testing device, and relates to the technical field of chinlon thread strength testing, the chinlon thread strength testing device comprises a monitoring station, the top of the monitoring station is fixedly provided with a fixing frame, the surface of the monitoring station is fixedly provided with a motor, and the output end of the motor is fixedly provided with a bidirectional screw; the strength testing device is arranged on the monitoring table, the strength testing device comprises a linear motor, a driving device, testing equipment, a spiral plate, a fixing rod, a square plate, a placing plate, a hollow table, a sliding rod, toothed plates, a rotating block, a rotating handle and a clamping groove, a chinlon thread is placed between the toothed plates, then the rotating handle is pushed to move downwards, and the strength of the chinlon thread is tested; the rotating handle moves downwards to drive a rotating block to move downwards, the rotating block moves downwards to drive a sliding rod to move downwards, the sliding rod moves downwards to drive a toothed plate to move downwards, the toothed plate moves downwards to clamp the chinlon thread, and it is prevented that the chinlon thread is loosened suddenly during pulling, and the detection effect is affected.

Description

Technical Field

[0001] The invention relates to the technical field of nylon thread strength testing, in particular to a nylon thread strength testing device. Background Art

[0002] Nylon thread strength testing device is a device used to measure and evaluate the tensile strength and ductility of nylon fiber threads during stretching. The device is usually used in the textile industry, material science experiments, quality control and other occasions to ensure that the products meet the relevant standards and requirements.

[0003] The patent with the patent announcement number CN218239598U relates to a nylon thread strength test device, including a bottom plate, two side plates are slidably connected to the top of the bottom plate, and an adjustment mechanism for adjusting the movement of the two side plates is provided on the bottom plate. The outer side walls of the two side plates at opposite ends are provided with a fixing mechanism. The top of the bottom plate is fixedly connected to a mounting plate, and the outer side wall of the mounting plate is fixedly connected to two symmetrically arranged mounting blocks, and a fixing rod is fixedly connected between the two mounting blocks, and a testing mechanism is provided on the fixing rod. The patent makes it easy to fix the nylon thread on the device through the arrangement of the side plates, U-shaped plates and connecting rods, and the fixed nylon thread is stretched through the coordinated use of springs and guide rods, so that the nylon thread remains in a straight state. Through the arrangement of the electric push rod, the moving plate and the test block, the device makes it easy to perform extrusion tests on different positions of the nylon thread, so as to fully test the strength of the nylon thread and facilitate use.

[0004] In the above patent, the arrangement of the electric push rod, the movable plate and the test block makes it easy for the device to perform extrusion tests on different positions of the nylon thread, so as to fully test the strength of the nylon thread and is convenient to use. However, during the process of clamping and pulling the nylon thread, the nylon thread may fall off directly, affecting the nylon thread strength monitoring effect. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a nylon thread strength testing device, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a nylon thread strength testing device, comprising: a monitoring platform, a fixing frame is fixedly installed on the top of the monitoring platform, a motor is fixedly installed on the surface of the monitoring platform, and a bidirectional screw is fixedly installed on the output end of the motor; a strength testing device, the strength testing device is arranged on the monitoring platform, the strength testing device comprises a linear motor, a driving device, a testing device, a spiral plate, a fixing rod, a square plate, a placing plate, a hollow platform, a sliding rod, a tooth plate, a rotating block, a turning handle and a slot, by placing the nylon thread between the tooth plates and then pushing the turning handle to move downward, the turning handle moving downward will drive the rotating block to move downward, and the rotating block moving downward will drive the sliding rod to move downward, the linear motor is fixedly installed on a side of the fixing frame close to the motor, the driving device is fixed It is installed at the output end of the linear motor, and the test equipment is fixedly installed at the output end of the driving device. The spiral plate is spirally installed on the surface of the bidirectional screw, the fixed rod is fixedly installed on the inner wall of the monitoring platform, and the fixed rod passes through the surface of the spiral plate. The square plate is fixedly installed on the top of the spiral plate, and the placement plate is fixedly installed on the side of the square plate close to the test equipment. The hollow table is fixedly installed on the top of the placement plate, and the sliding rod is slidably installed on the inner wall of the hollow table. The tooth plate is fixedly installed on the bottom of the sliding rod, and the rotating block is rotatably installed on the top of the sliding rod. The turning handle is fixedly installed on the top of the rotating block, and the card slot is fixedly installed on the top of the hollow table. The driving device is started to drive the test equipment to move downward, and the test equipment moves downward to contact the nylon thread, and the test equipment moves downward to extrude the nylon thread for strength detection.

[0007] According to the above technical solution, the testing device is arranged above the nylon wire, and a No. 1 spring is arranged in a straight line between the sliding rod and the hollow table, and the No. 1 spring drives the sliding rod to reset.

[0008] According to the above technical solution, a protective device for preventing the nylon thread from breaking and flying is provided on the square plate, and a correction device is provided on the protective device. The protective device includes a connecting seat, a rotating plate, a sliding seat, a connecting plate and a protective cover. The back-to-back movement of the square plates will drive the connecting seats to move back-to-back, and the back-to-back movement of the connecting seats will push the rotating plate to rotate downward, and the downward rotation of the rotating plate will drive the sliding seat to move downward, and the downward movement of the sliding seat will drive the protective cover to move downward. The connecting seat is fixedly installed on the surface of the square plate, the connecting plate is fixedly installed on the inner wall of the monitoring station, the sliding seat is slidably installed on the surface of the connecting plate, and the protective cover is fixedly installed on the top of the sliding seat. One end of the rotating plate is rotatably installed on the inner wall of the connecting seat, and the other end of the rotating plate is rotatably installed on the sliding seat.

[0009] According to the above technical solution, a support frame is fixedly installed on one side of the connecting plate close to the square plate, an air pressure box is fixedly installed on the top of the support frame, an air pressure box is provided on one side of the air pressure box close to the square plate with an air jet outlet, an air pressure plate is slidably installed on the inner wall of the air pressure box, a short rod is fixedly installed on the air pressure plate, a push plate is fixedly installed on the top of the short rod, and the protective cover will push the push plate downward when it moves downward, and the downward movement of the push plate will drive the short rod to move downward, and the downward movement of the short rod will drive the air pressure plate downward, and the downward movement of the air pressure plate will compress the gas inside the air pressure box and spray it out through the air jet outlet.

[0010] According to the above technical solution, a No. 2 spring is arranged between the sliding seat and the connecting plate, and the sliding seat is reset by the No. 2 spring. A No. 1 torsion spring is arranged between the rotating plate and the connecting seat, and the rotating plate is reset by the No. 1 torsion spring. A No. 3 spring is arranged between the air pressure box and the air pressure plate, and the air pressure plate is reset by the No. 3 spring.

[0011] According to the above technical scheme, the correction device includes a sliding rod, a reset spring, a pushing plate, a trapezoidal block, a pulley frame and a correction plate. The sliding rod is driven to move backward and forward by the back-to-back movement of the square plates. The sliding rod will contact the connecting plate during the back-to-back movement. The reverse force of the connecting plate will cause the sliding rod to move away from the connecting plate. The sliding rod is slidably installed on the surface of the square plate, the reset spring is sleeved on the surface of the sliding rod, the pushing plate is fixedly installed on the side of the sliding rod close to the placing plate, the trapezoidal block is fixedly installed on the side of the pushing plate away from the sliding rod, the pulley frame is slidably installed on the bottom of the placing plate, the correction plate is fixedly installed on the top of the pulley frame, and a semicircular groove is provided on the surface of the correction plate.

[0012] According to the above technical solution, a trapezoidal plate is fixedly installed on the surface of the correction plate, a sliding plate is slidably installed on the surface of the correction plate, and a support plate is fixedly installed on the top of the sliding plate. The movement of the correction plate in the direction away from the trapezoidal block will drive the trapezoidal plate to move in the direction away from the trapezoidal block, the movement of the trapezoidal plate in the direction away from the trapezoidal block will push the sliding plate to move upward, and the upward movement of the sliding plate will drive the support plate to move upward.

[0013] According to the above technical solution, the pulley frame contacts with the surface of the trapezoidal block, and the trapezoidal block pushes the pulley frame and the correction plate to correct the nylon line. The trapezoidal plate contacts with the surface of the sliding plate, and a No. 4 spring is arranged between the correction plate and the sliding plate, and the sliding plate is reset by the No. 4 spring.

[0014] The present invention provides a nylon thread strength testing device, which has the following beneficial effects: (1) The invention clamps the nylon thread by moving the tooth plate downward to prevent it from being suddenly loosened when pulled, which would affect the detection effect. When the tooth plate is clamped, the handle is turned to drive the rotating block to rotate, and the rotating block is locked in the slot. The slot limits the rotating block to prevent it from being loosened when pulled, which would affect the fixing effect. The test equipment moves downward to contact the nylon thread, and the test equipment moves downward to squeeze the nylon thread for strength testing. At the same time, the reciprocating motion of the output end of the linear motor drives the reciprocating motion of the driving device to perform strength testing on different positions of the nylon thread, thereby increasing the detection range and ensuring that the strength of the nylon thread meets the standard.

[0015] (2) In the present invention, the downward rotation of the rotating plate will drive the sliding seat to move downward, and the downward movement of the sliding seat will drive the protective cover to move downward. The protective cover moves downward to cover the nylon thread to prevent the nylon thread from suddenly breaking during the detection process. The broken nylon thread may bounce off, posing a certain safety hazard. At the same time, the downward movement of the air pressure plate will compress the gas inside the air pressure box and eject it through the air jet port. The ejected gas will blow away impurities attached to the nylon thread, reducing the heat and friction damage caused by friction. Reducing friction helps to maintain the integrity of the fiber line and prevent surface wear.

[0016] (3) In the present invention, the pulley frame moves in a direction away from the trapezoidal block, which drives the correction plate to move in a direction away from the trapezoidal block. The nylon thread is corrected by moving the correction plate in a direction away from the trapezoidal block, thereby preventing the nylon thread from being offset during testing by the test equipment, thereby affecting the test result. Meanwhile, the movement of the trapezoidal plate in a direction away from the trapezoidal block pushes the sliding plate to move upward, and the upward movement of the sliding plate drives the support plate to move upward. The upward movement of the support plate supports the nylon thread, thereby preventing the nylon thread from being out of the semicircular groove of the correction plate during correction, thereby affecting the test result. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement of part A; Figure 4 It is a structural schematic diagram of the strength testing device of the present invention; Figure 5 This is a schematic diagram of the cross-sectional structure of the hollow platform of the present invention; Figure 6 It is a schematic diagram of the structure of the protection device of the present invention; Figure 7 It is a schematic diagram of the cross-sectional structure of the square plate of the present invention.

[0018] In the figure: 1, monitoring table; 2, fixed frame; 3, motor; 4, bidirectional screw; 5, linear motor; 6, driving device; 7, testing equipment; 8, spiral plate; 9, fixed rod; 10, square plate; 11, placement plate; 12, hollow table; 13, sliding rod; 14, tooth plate; 15, rotating block; 16, turning handle; 161, slot; 171, connecting seat; 172, rotating plate; 173, sliding seat; 174, connecting plate; 175, protective cover; 176, supporting frame; 177, air pressure box; 178, air pressure plate; 179, short rod; 1710, push plate; 181, sliding rod; 182, reset spring; 183, push plate; 184, trapezoidal block; 185, pulley frame; 186, correction plate; 187, trapezoidal plate; 188, sliding plate; 189, supporting plate. DETAILED DESCRIPTION

[0019] 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.

[0020] See also Figure 1-Figure 5, one embodiment of the present invention is: a nylon line strength testing device, comprising: a monitoring platform 1, a fixing frame 2 is fixedly installed on the top of the monitoring platform 1, a motor 3 is fixedly installed on the surface of the monitoring platform 1, and a bidirectional screw 4 is fixedly installed on the output end of the motor 3; a strength testing device, the strength testing device is arranged on the monitoring platform 1, the strength testing device comprises a linear motor 5, a driving device 6, a testing device 7, a spiral plate 8, a fixing rod 9, a square plate 10, a placing plate 11, a hollow platform 12, a sliding rod 13, a tooth plate 14, a rotating block 15, a turning handle 16 and a card slot 161, the sliding rod 13 moves downward to drive the tooth plate 14 to move downward, and the tooth plate 14 moves downward to clamp the nylon line to prevent it from being suddenly loosened when pulled, which affects the detection effect, the linear motor 5 is fixedly installed on a side of the fixing frame 2 close to the motor 3, and the driving device 6 is fixedly installed on the linear motor 5 At the output end, the test equipment 7 is fixedly mounted on the output end of the driving device 6, the spiral plate 8 is spirally mounted on the surface of the bidirectional screw 4, the fixed rod 9 is fixedly mounted on the inner wall of the monitoring platform 1, the fixed rod 9 passes through the surface of the spiral plate 8, the square plate 10 is fixedly mounted on the top of the spiral plate 8, the placement plate 11 is fixedly mounted on the side of the square plate 10 close to the test equipment 7, the hollow table 12 is fixedly mounted on the top of the placement plate 11, the sliding rod 13 is slidably mounted on the inner wall of the hollow table 12, the tooth plate 14 is fixedly mounted on the bottom of the sliding rod 13, the rotating block 15 is rotatably mounted on the top of the sliding rod 13, the turning handle 16 is fixedly mounted on the top of the rotating block 15, and the card slot 161 is fixedly mounted on the top of the hollow table 12. At the same time, the reciprocating motion of the output end of the linear motor 5 drives the reciprocating motion of the driving device 6 to perform strength detection on different positions of the nylon line, thereby increasing the detection range and ensuring that the strength of the nylon line meets the standard.

[0021] The testing device 7 is arranged above the nylon line, and a spring No. 1 is arranged in a straight line between the sliding rod 13 and the hollow platform 12, and the sliding rod 13 is driven to reset by the spring No. 1.

[0022] When the present embodiment is working, the nylon line is placed between the tooth plates 14, and then the turning handle 16 is pushed to move downward. The turning handle 16 moving downward will drive the rotating block 15 to move downward. The rotating block 15 moving downward will drive the sliding rod 13 to move downward. The sliding rod 13 moving downward will drive the tooth plate 14 to move downward. The tooth plate 14 moving downward will clamp the nylon line to prevent it from being suddenly loosened when pulled, which will affect the detection effect. When the tooth plate 14 is clamped, the turning handle 16 is rotated, and the rotation of the turning handle 16 will drive the rotating block 15 to rotate. The rotation of the rotating block 15 will be stuck in the card slot 161. The rotating block 15 is limited by the card slot 161 to prevent it from being loosened when pulled and affecting the fixing effect. When clamped, , start the motor 3, the rotation of the motor 3 will drive the bidirectional screw 4 to rotate, the rotation of the bidirectional screw 4 will drive the spiral plate 8 to move away from each other, the spiral plate 8 will drive the square plate 10, the placement plate 11 and the hollow table 12 to move away from each other, the hollow table 12 will drive the nylon thread to be straightened, thereby improving the detection efficiency, and at the same time start the drive device 6 to drive the test equipment 7 to move downward, and the test equipment 7 moves downward to contact the nylon thread, and the test equipment 7 moves downward to extrude the nylon thread for strength detection, and at the same time, the reciprocating motion of the output end of the linear motor 5 drives the drive device 6 to move back and forth, so as to perform strength detection on different positions of the nylon thread, thereby increasing the detection range and ensuring that the strength of the nylon thread meets the standard.

[0023] See also Figure 1-Figure 7 On the basis of the above embodiment, in another embodiment of the present invention, a protective device for preventing the nylon thread from breaking and flying is provided on the square plate 10, and a correction device is provided on the protective device. The protective device includes a connecting seat 171, a rotating plate 172, a sliding seat 173, a connecting plate 174 and a protective cover 175. The connecting seat 171 is fixedly mounted on the surface of the square plate 10, the connecting plate 174 is fixedly mounted on the inner wall of the monitoring platform 1, the sliding seat 173 is slidably mounted on the surface of the connecting plate 174, the protective cover 175 is fixedly mounted on the top of the sliding seat 173, one end of the rotating plate 172 is rotatably mounted on the inner wall of the connecting seat 171, and the other end of the rotating plate 172 is rotatably mounted on the sliding seat 173. The protective cover 175 moves downward to cover the nylon thread to prevent the nylon thread from suddenly breaking during the detection process. The broken nylon thread may fly, which poses certain safety hazards.

[0024] A support frame 176 is fixedly installed on one side of the connecting plate 174 close to the square plate 10, an air pressure box 177 is fixedly installed on the top of the support frame 176, an air pressure port is opened on one side of the air pressure box 177 close to the square plate 10, an air pressure plate 178 is slidably installed on the inner wall of the air pressure box 177, a short rod 179 is fixedly installed on the air pressure plate 178, a push plate 1710 is fixedly installed on the top of the short rod 179, and the ejected gas is used to blow away impurities attached to the nylon thread, thereby reducing the heat and friction damage caused by friction. Reducing friction helps to maintain the integrity of the fiber line and prevent surface wear.

[0025] A No. 2 spring is arranged between the sliding seat 173 and the connecting plate 174, and the sliding seat 173 is reset by the No. 2 spring. A No. 1 torsion spring is arranged between the rotating plate 172 and the connecting seat 171, and the rotating plate 172 is reset by the No. 1 torsion spring. A No. 3 spring is arranged between the air pressure box 177 and the air pressure plate 178, and the air pressure plate 178 is reset by the No. 3 spring.

[0026] The correction device includes a slide bar 181, a reset spring 182, a push plate 183, a trapezoidal block 184, a pulley frame 185 and a correction plate 186. The slide bar 181 is slidably installed on the surface of the square plate 10, the reset spring 182 is sleeved on the surface of the slide bar 181, the push plate 183 is fixedly installed on the side of the slide bar 181 close to the placement plate 11, the trapezoidal block 184 is fixedly installed on the side of the push plate 183 away from the slide bar 181, the pulley frame 185 is slidably installed on the bottom of the placement plate 11, and the correction plate 186 is fixedly installed on the top of the pulley frame 185. A semicircular groove is provided on the surface of the correction plate 186. The nylon thread is corrected by moving the correction plate 186 in the direction away from the trapezoidal block 184 to prevent the nylon thread from shifting in position during testing by the test equipment 7, thereby affecting the test effect.

[0027] A trapezoidal plate 187 is fixedly installed on the surface of the correction plate 186, a sliding plate 188 is slidably installed on the surface of the correction plate 186, and a support plate 189 is fixedly installed on the top of the sliding plate 188. The support plate 189 moves upward to support the nylon thread and prevent the nylon thread from being out of the semicircular groove of the correction plate 186 during correction, thereby affecting the detection effect.

[0028] The pulley frame 185 is in contact with the surface of the trapezoidal block 184, and the trapezoidal block 184 pushes the pulley frame 185 and the correction plate 186 to correct the nylon line. The trapezoidal plate 187 is in contact with the surface of the sliding plate 188. A No. 4 spring is arranged between the correction plate 186 and the sliding plate 188, and the sliding plate 188 is reset by the No. 4 spring.

[0029] When this embodiment is working: the square plates 10 move away from each other and drive the connecting seat 171 to move away from each other, and the connecting seat 171 moves away from each other and pushes the rotating plate 172 to rotate downward, and the rotating plate 172 rotates downward and drives the sliding seat 173 to move downward, and the sliding seat 173 moves downward and drives the protective cover 175 to move downward, and the nylon thread is covered by the protective cover 175 to prevent the nylon thread from suddenly breaking during the detection process. The broken nylon thread may bounce off, posing certain safety hazards. At the same time, the protective cover 175 moves downward and pushes the push plate 1710 to move downward, and the push plate 1710 moves downward and drives the short rod 179 to move downward, and the short rod 179 moves downward and drives the air pressure plate 178 to move downward, and the air pressure plate 178 moves downward and compresses the gas inside the air pressure box 177 and ejects it through the air jet port, and uses the ejected gas to blow away impurities attached to the nylon thread, thereby reducing the heat and friction damage caused by friction. Reducing friction helps to maintain the integrity of the fiber line and prevent surface wear.

[0030] The square plates 10 move away from each other and drive the sliding rod 181 to move away from each other. During the movement of the sliding rod 181 away from each other, the sliding rod 181 will contact the connecting plate 174. The reverse force of the connecting plate 174 will cause the sliding rod 181 to move in the direction away from the connecting plate 174. The movement of the sliding rod 181 in the direction away from the connecting plate 174 will drive the pushing plate 183 to move in the direction away from the connecting plate 174. The movement of the pushing plate 183 in the direction away from the connecting plate 174 will drive the trapezoidal block 184 to move in the direction away from the connecting plate 174. The movement of the trapezoidal block 184 in the direction away from the connecting plate 174 will push the pulley frame 185 to move in the direction away from the trapezoidal block 184. The movement of the pulley frame 185 in the direction away from the trapezoidal block 184 will drive The dynamic correction plate 186 moves in the direction away from the trapezoidal block 184, and the nylon thread is corrected by moving the correction plate 186 in the direction away from the trapezoidal block 184 to prevent the nylon thread from being offset when the test equipment 7 is testing, thereby affecting the test effect. At the same time, the movement of the correction plate 186 in the direction away from the trapezoidal block 184 will drive the trapezoidal plate 187 to move in the direction away from the trapezoidal block 184, and the movement of the trapezoidal plate 187 in the direction away from the trapezoidal block 184 will push the sliding plate 188 to move upward, and the upward movement of the sliding plate 188 will drive the support plate 189 to move upward, and the nylon thread is supported by the upward movement of the support plate 189, while preventing the nylon thread from being not in the semicircular groove of the correction plate 186 during correction, thereby affecting the detection effect.

[0031] 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 nylon thread strength testing device, characterized in that: include: A monitoring platform (1), wherein a fixing frame (2) is fixedly mounted on the top of the monitoring platform (1), a motor (3) is fixedly mounted on the surface of the monitoring platform (1), and a bidirectional screw (4) is fixedly mounted on the output end of the motor (3); A strength testing device, the strength testing device being arranged on a monitoring platform (1), comprising a linear motor (5), a driving device (6), a testing device (7), a spiral plate (8), a fixed rod (9), a square plate (10), a placement plate (11), a hollow platform (12), a sliding rod (13), a toothed plate (14), a rotating block (15), a turning handle (16) and a slot (161), wherein the linear motor (5) is fixedly mounted on a side of a fixed frame (2) close to the motor (3), the driving device (6) is fixedly mounted on an output end of the linear motor (5), the testing device (7) is fixedly mounted on an output end of the driving device (6), the spiral plate (8) is spirally mounted on a surface of a bidirectional screw (4), and the The fixed rod (9) is fixedly mounted on the inner wall of the monitoring platform (1), the fixed rod (9) passes through the surface of the spiral plate (8), the square plate (10) is fixedly mounted on the top of the spiral plate (8), the placement plate (11) is fixedly mounted on a side of the square plate (10) close to the test device (7), the hollow platform (12) is fixedly mounted on the top of the placement plate (11), the sliding rod (13) is slidably mounted on the inner wall of the hollow platform (12), the tooth plate (14) is fixedly mounted on the bottom of the sliding rod (13), the rotating block (15) is rotatably mounted on the top of the sliding rod (13), the turning handle (16) is fixedly mounted on the top of the rotating block (15), and the card slot (161) is fixedly mounted on the top of the hollow platform (12); Wherein, a protective device for preventing the nylon thread from breaking and flying away is provided on the square plate (10), and a correcting device is provided on the protective device.

2. A nylon thread strength testing device according to claim 1, characterized in that: The testing device (7) is arranged above the nylon thread, and a No. 1 spring is arranged in a straight line between the sliding rod (13) and the hollow platform (12).

3. A nylon thread strength testing device according to claim 2, characterized in that: The protection device comprises a connecting seat (171), a rotating plate (172), a sliding seat (173), a connecting plate (174) and a protective cover (175); the connecting seat (171) is fixedly mounted on the surface of the square plate (10); the connecting plate (174) is fixedly mounted on the inner wall of the monitoring platform (1); the sliding seat (173) is slidably mounted on the surface of the connecting plate (174); the protective cover (175) is fixedly mounted on the top of the sliding seat (173); one end of the rotating plate (172) is rotatably mounted on the inner wall of the connecting seat (171); and the other end of the rotating plate (172) is rotatably mounted on the sliding seat (173).

4. A nylon thread strength testing device according to claim 3, characterized in that: A support frame (176) is fixedly mounted on one side of the connecting plate (174) close to the square plate (10), an air pressure box (177) is fixedly mounted on the top of the support frame (176), an air jet is provided on one side of the air pressure box (177) close to the square plate (10), an air pressure plate (178) is slidably mounted on the inner wall of the air pressure box (177), a short rod (179) is fixedly mounted on the air pressure plate (178), and a push plate (1710) is fixedly mounted on the top of the short rod (179).

5. A nylon thread strength testing device according to claim 4, characterized in that: A No. 2 spring is provided between the sliding seat (173) and the connecting plate (174), a No. 1 torsion spring is provided between the rotating plate (172) and the connecting seat (171), and a No. 3 spring is provided between the air pressure box (177) and the air pressure plate (178).

6. A nylon thread strength testing device according to claim 5, characterized in that: The correction device comprises a slide bar (181), a reset spring (182), a push plate (183), a trapezoidal block (184), a pulley frame (185) and a correction plate (186); the slide bar (181) is slidably mounted on the surface of the square plate (10); the reset spring (182) is sleeved on the surface of the slide bar (181); the push plate (183) is fixedly mounted on a side of the slide bar (181) close to the placement plate (11); the trapezoidal block (184) is fixedly mounted on a side of the push plate (183) away from the slide bar (181); the pulley frame (185) is slidably mounted on the bottom of the placement plate (11); the correction plate (186) is fixedly mounted on the top of the pulley frame (185); and a semicircular groove is provided on the surface of the correction plate (186).

7. A nylon thread strength testing device according to claim 6, characterized in that: A trapezoidal plate (187) is fixedly mounted on the surface of the correction plate (186), a sliding plate (188) is slidably mounted on the surface of the correction plate (186), and a support plate (189) is fixedly mounted on the top of the sliding plate (188).

8. A nylon thread strength testing device according to claim 7, characterized in that: The pulley frame (185) is in surface contact with the trapezoidal block (184), the trapezoidal plate (187) is in surface contact with the sliding plate (188), and a No. 4 spring is provided between the correction plate (186) and the sliding plate (188).

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