Cable flame-retardant composite fiber paper rope low-temperature cracking tensile detection device

Abstract

The invention provides a cable flame-retardant composite fiber paper rope low-temperature cracking tensile detection device, and relates to the technical field of cable detection, and the cable flame-retardant composite fiber paper rope low-temperature cracking tensile detection device comprises a sealing cover body, and positioning covers are installed at the two ends of the top and the rear side of the sealing cover body; two rotating screw rods are rotationally mounted in the sealing cover body; a driving cylinder is mounted on the protective glass, and the output end of the bottom of the driving cylinder penetrates through the protective glass and is provided with a central connecting plate; lateral connecting plates are mounted at the two ends of the central connecting plate; and traction protective covers are mounted at the bottoms of the two lateral connecting plates. The broken cable flame-retardant composite fiber paper rope is blocked through the central protective cover and the traction protective cover, interference of the broken paper rope on other normal detection paper ropes is eliminated, the accuracy of detection data is improved, and the problems that when a certain cable flame-retardant composite fiber paper rope is broken, the broken residual part is very easy to abut against the adjacent paper rope, and the detection efficiency is high are solved. And the accuracy of a detection result is influenced.

Description

Technical Field

[0001] This invention relates to the field of cable testing technology, and in particular to a low-temperature cracking tensile testing device for flame-retardant composite fiber paper ropes used in cables. Background Technology

[0002] Flame-retardant composite fiber paper rope for cables is a material that combines flame-retardant properties with the characteristics of fiber paper rope. It is mainly used for wrapping, binding and protecting cables to improve their flame-retardant performance and safety. By using a tensile testing device to perform tensile testing on the flame-retardant composite fiber paper rope for cables in a low-temperature environment, the durability of cables in harsh environments can be improved.

[0003] In existing technologies, the conventional practice for tensile testing of flame-retardant composite fiber paper ropes for cables is to install multiple samples for testing. However, during the tensile process, there is a risk of breakage in the flame-retardant composite fiber paper ropes. Once one of the flame-retardant composite fiber paper ropes breaks, the remaining part after the break is very likely to lean against the adjacent flame-retardant composite fiber paper ropes, which will interfere with the normal stress state and deformation process of the other unbroken flame-retardant composite fiber paper ropes, resulting in errors in the tensile cracking data obtained from subsequent tests and affecting the accuracy of the test results. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a low-temperature cracking tensile testing device for flame-retardant composite fiber paper ropes used in cables, thereby solving the problems mentioned in the background section.

[0005] To solve the above technical problems, the present invention is achieved through the following technical solutions: This invention relates to a low-temperature cracking tensile testing device for flame-retardant composite fiber paper ropes used in cables. Specifically, it includes: a sealed cover with positioning covers installed at its top two ends and rear side; two rotating screws rotatably mounted inside the sealed cover; threads on the outer sides of the two rotating screws, with traction plates mounted on these threads; a sealing cover rotatably mounted inside the positioning covers; protective glass embedded in the inner side of the sealing cover; a drive cylinder mounted on the protective glass, with a central connecting plate installed through the bottom of the drive cylinder at the protective glass; lateral connecting plates installed at both ends of the central connecting plate; traction protective covers installed at the bottom of both lateral connecting plates; a central protective cover, made of transparent material, installed between the two traction protective covers; and a movable groove at the bottom of the traction protective cover, located outside the traction plate.

[0006] Furthermore, the sealing cover has a rectangular structure, and a servo motor is installed at one end of the sealing cover; the two sides of the rotating screw are connected by pulleys, and one side of the rotating screw is connected to the output end of the servo motor at one end of the sealing cover.

[0007] Furthermore, the top and bottom of the traction plate are provided with multiple evenly distributed positioning slots; a support plate is slidably installed in the positioning slot; and a drive screw is rotatably installed at one end of the support plate.

[0008] Furthermore, an adjusting inner plate is slidably installed on the inner side of the support plate; the side of the adjusting inner plate is rotatably connected to the inner end of the drive screw.

[0009] Furthermore, a positioning rod is fixedly installed at the other end of the support plate; a positioning groove is provided at the top of the positioning rod, and a rotating plate is rotatably installed on the outer side of the positioning rod.

[0010] Furthermore, the inner side of the rotating plate is provided with a positioning hole, wherein the positioning hole is connected to the positioning groove; a refrigeration component is installed on the rear side of the sealing cover; and air outlet pipes are installed at both ends of the refrigeration component.

[0011] Furthermore, a diversion pipe is installed on the rear side of the air outlet pipe through the sealing cover; the top of the diversion pipe is provided with evenly distributed guide grooves; and guide rails are installed on both sides inside the sealing cover.

[0012] Furthermore, a drive cylinder is installed at the other end of the sealing cover, and a movable detection plate is installed through the output end of the drive cylinder through the sealing cover; the two ends of the movable detection plate are slidably installed inside the guide rail, and a visual detection sensor is provided on the top of the movable detection plate.

[0013] Furthermore, the traction protective cover and the central protective cover are positioned outside the positioning rod; a drive pump is installed on the top of the refrigeration assembly, and a telescopic tube is installed on the input end of the drive pump; an intermediate tube is installed on the side end of the telescopic tube.

[0014] Furthermore, a guide pipe is installed on the side end of the intermediate tube; the bottom of the guide pipe has multiple connecting pipes; the bottom of the multiple connecting pipes penetrates the top of the protective glass and is connected to the top of the traction protective cover and the central protective cover respectively.

[0015] This invention provides a low-temperature cracking tensile testing device for flame-retardant composite fiber paper ropes for cables, which has the following beneficial effects: In use, this invention uses a central protective cover and a traction protective cover to block the broken flame-retardant composite fiber paper rope of the cable. During the testing process, when a flame-retardant composite fiber paper rope of a cable breaks under tension, the central protective cover can effectively block the broken part in time, preventing the broken paper rope from draping over the other paper ropes, thereby eliminating the interference of the broken paper rope on other normally tested paper ropes. This ensures that each flame-retardant composite fiber paper rope of the cable being tested can complete the tensile test independently and without interference, greatly improving the accuracy and reliability of the test data.

[0016] In addition, the positioning rod, rotating plate, positioning hole and positioning groove are used to fix one end of the flame-retardant composite fiber paper rope of the cable. The three rotating plates cover a small area of ​​the flame-retardant composite fiber paper rope of the cable and will not cause obstruction. This ensures that any part of the flame-retardant composite fiber paper rope of the cable can be fully exposed to the low temperature environment, which can accurately simulate the low temperature environment of the cable in actual use, making the test results closer to the real situation and effectively improving the accuracy of the tensile test data of the flame-retardant composite fiber paper rope of the cable. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0018] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0019] In the attached diagram: Figure 1 A schematic diagram of the overall structure of the present invention is shown; Figure 2 A schematic diagram of the sealing cover plate of the present invention in an unfolded state is shown; Figure 3 A cross-sectional view of the sealing cover of the present invention is shown; Figure 4 A schematic cross-sectional view of the support plate structure of the present invention is shown; Figure 5 A three-dimensional structural diagram of the diversion tube of the present invention is shown; Figure 6 A three-dimensional structural diagram of the active detection plate of the present invention is shown; Figure 7 A three-dimensional structural diagram of the guide tube of the present invention is shown; Figure 8 A cross-sectional view of the central protective cover of the present invention is shown; Figure 9 A three-dimensional structural diagram of the lateral connecting plate of the present invention is shown.

[0020] List of reference numerals 1. Sealing cover; 101. Positioning cover; 102. Rotating screw; 103. Traction plate; 104. Positioning slot; 105. Support plate; 106. Drive screw; 107. Adjusting inner plate; 108. Positioning rod; 109. Positioning groove; 1010. Rotating plate; 1011. Positioning hole; 2. Refrigeration components; 201. Exhaust pipe; 202. Diverter pipe; 203. Flow guide groove; 204. Guide rail; 205. Movable detection plate; 3. Sealing cover; 301. Protective glass; 302. Central connecting plate; 303. Side connecting plate; 304. Traction protective cover; 305. Central protective cover; 306. Movable groove; 307. Telescopic pipe; 308. Intermediate pipe; 309. Guide pipe; 3010. Connecting pipe. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the described embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] Please refer to Figures 1 to 9 : Example 1: This invention proposes a low-temperature cracking tensile testing device for flame-retardant composite fiber paper ropes used in cables, comprising: a sealed cover 1, with positioning covers 101 installed at both ends of the top and the rear side of the sealed cover 1; two rotating screws 102 are rotatably mounted inside the sealed cover 1; threads are provided on the outer sides of the two rotating screws 102, and a traction plate 103 is installed on the outer threads of the rotating screws 102; the sealed cover 1 has a rectangular structure, and a servo motor is installed at one end of the sealed cover 1; the side ends of the two rotating screws 102 are connected by pulleys, and the side end of one rotating screw 102 is connected to the output end of the servo motor at one end of the sealed cover 1; the top of the traction plate 103... The top and bottom are provided with multiple evenly distributed positioning slots 104; a support plate 105 is slidably installed in the positioning slots 104; a drive screw 106 is rotatably installed at one end of the support plate 105; an adjusting inner plate 107 is slidably installed on the inner side of the support plate 105; the side of the adjusting inner plate 107 is rotatably connected to the inner end of the drive screw 106; the other end of the support plate 105 is fixedly installed with a positioning rod 108; a positioning groove 109 is provided at the top of the positioning rod 108, and a rotating plate 1010 is rotatably installed on the outer side of the positioning rod 108; a positioning hole 1011 is provided on the inner side of the rotating plate 1010, wherein the positioning hole 1011 is connected to the positioning groove 109.

[0023] In this embodiment of the invention, when performing tensile crack testing on flame-retardant composite fiber paper ropes for cables under low-temperature conditions, a suitable number of support plates 105 are slidably installed on the positioning slots 104 at the top and bottom of the traction plate 103. The flame-retardant composite fiber paper rope to be tested is inserted into the positioning slot 109 and the three positioning holes 1011. The rotating plate 1010 is rotated on the outside of the positioning rod 108. The rotating plate 1010 causes the flame-retardant composite fiber paper rope in the positioning holes 1011 and the positioning slot 109 to be pressed against the threads on the outside of the positioning rod 108, so that the three rotating plates 1010 fix one end of the flame-retardant composite fiber paper rope. The coverage area of ​​the three rotating plates 1010 on the flame-retardant composite fiber paper rope is small and will not obstruct the flame-retardant composite fiber paper rope, so that any part of the flame-retardant composite fiber paper rope is completely exposed to the low-temperature environment, simulating the real environment of the cable, improving the accuracy of the tensile test data of the flame-retardant composite fiber paper rope. The drive motor at one end of the sealing cover 1 A rotating screw 102 is driven to rotate, and another rotating screw 102 is driven to rotate synchronously via a pulley. The two rotating screws 102 drive the traction plate 103 to move synchronously. The traction plate 103 drives multiple support plates 105 above it to move simultaneously, so that the flame-retardant composite fiber paper rope of the cable is initially stretched and unfolded. A rotating drive screw 106 at one end of the support plate 105 drives the adjusting inner plate 107 to move. The adjusting inner plate 107 is inside the support plate 105, thereby driving the support plate 105 to move to the outer end. After each support plate 105 moves, it pre-tightens the corresponding flame-retardant composite fiber paper rope of the cable, so that the four flame-retardant composite fiber paper ropes of the cable are at the same degree of tension. The rotating screw 102 continues to rotate, driving the two traction plates 103 to move to both ends, thereby driving the flame-retardant composite fiber paper rope of the cable to undergo tensile testing. The four flame-retardant composite fiber paper ropes of the cable are subjected to tensile testing under the same conditions and environment, which improves the accuracy of the tensile cracking data of the flame-retardant composite fiber paper rope of the cable.

[0024] In Example 2, based on Example 1, a cooling component 2 is installed on the rear side of the sealing cover 1; air outlet pipes 201 are installed at both ends of the cooling component 2; a diversion pipe 202 is installed through the air outlet pipe 201 and penetrates the rear side of the sealing cover 1; a uniformly distributed guide groove 203 is opened at the top of the diversion pipe 202; guide rails 204 are installed on both sides inside the sealing cover 1; a drive cylinder is installed at the other end of the sealing cover 1, and a movable detection plate 205 is installed through the sealing cover 1 at the output end of the drive cylinder; the two ends of the movable detection plate 205 are slidably installed inside the guide rails 204, and a visual inspection sensor is provided at the top of the movable detection plate 205 to stretch the flame-retardant composite fiber paper rope of the cable under low temperature conditions. During crack detection, the cooling component 2 on the rear side of the sealing cover 1 generates a cooling airflow that enters the interior of the diversion pipe 202 through the air outlet pipe 201. The guide groove 203 on the diversion pipe 202 corresponds to the flame-retardant composite fiber paper rope of the cable above. The cold airflow is sprayed out through the guide groove 203, so that the flame-retardant composite fiber paper rope of the cable is in a low-temperature environment for detection. At the same time, the drive cylinder at the other end of the sealing cover 1 drives the movable detection plate 205 to move back and forth along the guide slide rail 204, so that the visual detection sensor on the movable detection plate 205 detects and records the tensile cracking of the flame-retardant composite fiber paper rope of the cable. The tensile cracking of the flame-retardant composite fiber paper rope of the cable is detected in a comprehensive manner to ensure the comprehensiveness of the detection results.

[0025] In Example 3, based on Example 1, a sealing cover 3 is rotatably installed on the inner side of the positioning cover 101; a protective glass 301 is inlaid on the inner side of the sealing cover 3; a drive cylinder is installed on the protective glass 301, and a central connecting plate 302 is installed through the bottom of the drive cylinder through the protective glass 301; lateral connecting plates 303 are installed at both ends of the central connecting plate 302; a traction protective cover 304 is installed at the bottom of both lateral connecting plates 303; a central protective cover 305 is installed between the two traction protective covers 304, wherein the central protective cover 305 is made of transparent material; the bottom of the traction protective cover 304 is provided with a movable groove 306, and the movable groove 306 at the bottom of the traction protective cover 304 is located outside the traction plate 103; the traction protective cover 304 and the central protective cover 305 are connected by a central connecting plate 305. The protective cover 305 moves to the outside of the positioning rod 108; a drive pump is installed on the top of the cooling component 2, and a telescopic pipe 307 is installed on the input end of the drive pump; an intermediate pipe 308 is installed on the side end of the telescopic pipe 307; a guide pipe 309 is installed on the side end of the intermediate pipe 308; multiple connecting pipes 3010 are connected to the bottom of the guide pipe 309; the bottom of the multiple connecting pipes 3010 passes through the top of the protective glass 301 and is connected to the top of the traction protective cover 304 and the central protective cover 305 respectively. When performing a low-temperature tensile crack test on the flame-retardant composite fiber paper rope of the cable, after the flame-retardant composite fiber paper rope of the cable is installed inside the sealed cover 1, the sealing cover 3 is rotated on the positioning cover 101 to close on the sealed cover 1, and the cable passes through the transparent protective glass 301. Observe the internal flame-retardant composite fiber paper rope of the cable. Position the traction protective cover 304 and the central protective cover 305 on the corresponding flame-retardant composite fiber paper rope. The drive cylinder on the protective glass 301 drives the central connecting plate 302 to move downward. The two ends of the central connecting plate 302 drive the side connecting plates 303 to move downward. The side connecting plates 303 drive the traction protective cover 304 to move downward. The traction protective cover 304 then drives the central protective cover 305 to move downward, so that the traction protective cover 304 and the central protective cover 305 cover the outside of the flame-retardant composite fiber paper rope of the cable. The traction plate 103 slides inside the movable groove 306. When the flame-retardant composite fiber paper rope of the cable experiences tensile breakage, the central protective cover 305 provides flame retardant protection for the broken cable. Composite fiber paper ropes act as a barrier, reducing the amount of flame-retardant composite fiber paper ropes draped over other flame-retardant composite fiber paper ropes, thus preventing interference with the tested flame-retardant composite fiber paper ropes and improving the accuracy of tensile testing. The drive pump at the top of the cooling component 2 operates, and the connecting pipe 3010 absorbs the cold airflow from the traction protective cover 304 and the central protective cover 305, which is then collected in the middle pipe 308 through the guide pipe 309. The airflow then flows through the middle pipe 308 to the telescopic pipe 307 and enters the cooling component 2, where it is cooled and then flows out through the outlet pipe 201 for recycling. This precise control of the low temperature inside the sealed cover 1 ensures accurate testing of the flame-retardant composite fiber paper ropes in low-temperature environments.

[0026] The working principle of this embodiment is as follows: The support plate 105 is slidably installed on the positioning slots 104 at the top and bottom of the traction plate 103. The flame-retardant composite fiber paper rope of the cable is inserted into the positioning slot 109 and the three positioning holes 1011. The rotating plate 1010 is rotated to make the flame-retardant composite fiber paper rope of the cable squeeze onto the threads on the outside of the positioning rod 108. The three rotating plates 1010 fix the flame-retardant composite fiber paper rope of the cable. The drive motor at one end of the sealing cover 1 drives one rotating screw 102 to drive another rotating screw 102 through the pulley. As the screws rotate, the two rotating screws 102 drive the traction plate 103 to move synchronously. The traction plate 103 causes the flame-retardant composite fiber paper rope of the cable to undergo initial stretching. The rotating drive screw 106 drives the adjusting inner plate 107 to move inside the support plate 105, thereby causing the support plate 105 to move outward. After each support plate 105 is moved and adjusted, the corresponding flame-retardant composite fiber paper rope of the cable is pre-tightened and stretched to the same tension state. The sealing cover 3 is rotated on the positioning cover 101 and closed on the sealing cover body 1. The transparent protective glass... Glass 301 is used to observe the internal flame-retardant composite fiber paper rope of the cable. The drive cylinder on the protective glass 301 moves the central connecting plate 302 and the side connecting plate 303 downward. The side connecting plate 303 moves the traction protective cover 304 and the central protective cover 305 downward to cover the outside of the flame-retardant composite fiber paper rope of the cable, blocking any possible breakage of the flame-retardant composite fiber paper rope during the inspection. The cooling component 2 generates a cooling airflow that enters the diversion pipe 202 through the air outlet pipe 201 and is then ejected through the guide groove 203. When the flame-retardant composite fiber paper rope of the cable is in a low-temperature environment, the drive pump at the top of the cooling component 2 works. The connecting pipe 3010 absorbs the cold airflow in the traction protective cover 304 and the central protective cover 305, which is then collected in the intermediate pipe 308 through the guide pipe 309 and then flows into the telescopic pipe 307 through the intermediate pipe 308 before entering the cooling component 2. After the airflow is cooled, it flows out through the air outlet pipe 201 for recycling. The low-temperature temperature inside the sealed cover 1 is precisely controlled to ensure accurate detection of the flame-retardant composite fiber paper rope of the cable in a low-temperature environment.

[0027] The following points should be noted in this article: 1. The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention; other structures can refer to general designs.

[0028] 2. Where there is no conflict, the embodiments of the present invention and the features thereof can be combined with each other to obtain new embodiments.

[0029] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A low-temperature cracking tensile testing device for flame-retardant composite fiber paper rope for cables, comprising: A sealing cover (1) is provided, with positioning covers (101) installed at both ends of the top and the rear side of the sealing cover (1); characterized in that two rotating screws (102) are rotatably installed inside the sealing cover (1); threads are provided on the outer sides of the two rotating screws (102), and traction plates (103) are installed on the outer threads of the rotating screws (102); a sealing cover plate (3) is rotatably installed on the inner side of the positioning cover (101); a protective glass (301) is inlaid on the inner side of the sealing cover plate (3); and a drive is installed on the protective glass (301). The output end of the driven cylinder is connected to a central connecting plate (302) through the protective glass (301); the two ends of the central connecting plate (302) are connected to side connecting plates (303); the bottom of the two side connecting plates (303) are connected to a traction protective cover (304); a central protective cover (305) is connected between the two traction protective covers (304); the bottom of the traction protective cover (304) is provided with a movable groove (306), and the movable groove (306) at the bottom of the traction protective cover (304) is located outside the traction plate (103).

2. The low-temperature cracking tensile testing device for flame-retardant composite fiber paper rope of cables according to claim 1, characterized in that, A servo motor is installed at one end of the sealing cover (1); the two sides of the rotating screws (102) are connected by pulleys, and one side of the rotating screw (102) is connected to the output end of the servo motor at one end of the sealing cover (1).

3. The low-temperature cracking tensile testing device for flame-retardant composite fiber paper rope of cables according to claim 2, characterized in that, The top and bottom of the traction plate (103) are provided with multiple evenly distributed positioning slots (104); a support plate (105) is slidably installed in the positioning slot (104); a drive screw (106) is rotatably installed at one end of the support plate (105).

4. The low-temperature cracking tensile testing device for flame-retardant composite fiber paper rope of cables according to claim 3, characterized in that, An adjusting inner plate (107) is slidably installed on the inner side of the support plate (105); the side of the adjusting inner plate (107) is rotatably connected to the inner end of the drive screw (106).

5. The low-temperature cracking tensile testing device for flame-retardant composite fiber paper rope of cables according to claim 4, characterized in that, A positioning rod (108) is fixedly installed at the other end of the support plate (105); a positioning groove (109) is provided on the top of the positioning rod (108), and a rotating plate (1010) is rotatably installed on the outer side of the positioning rod (108).

6. The low-temperature cracking tensile testing device for flame-retardant composite fiber paper rope of cables according to claim 5, characterized in that, The rotating plate (1010) has a positioning hole (1011) on its inner side, wherein the positioning hole (1011) is connected to the positioning groove (109); a refrigeration component (2) is installed on the rear side of the sealing cover (1); and air outlet pipes (201) are installed at both ends of the refrigeration component (2).

7. The low-temperature cracking tensile testing device for flame-retardant composite fiber paper rope of cables according to claim 6, characterized in that, The exhaust pipe (201) passes through the rear side of the sealing cover (1) and is equipped with a diversion pipe (202); the top of the diversion pipe (202) is provided with evenly distributed guide grooves (203); and guide rails (204) are installed on both sides inside the sealing cover (1).

8. The low-temperature cracking tensile testing device for flame-retardant composite fiber paper rope of cables according to claim 7, characterized in that, A drive cylinder is installed at the other end of the sealing cover (1), and a movable detection plate (205) is installed through the sealing cover (1) at the output end of the drive cylinder; the two ends of the movable detection plate (205) are slidably installed inside the guide rail (204), and a visual detection sensor is provided on the top of the movable detection plate (205).

9. The low-temperature cracking tensile testing device for flame-retardant composite fiber paper rope of cables according to claim 8, characterized in that, The traction protective cover (304) and the central protective cover (305) are moved to the outside of the positioning rod (108); a drive pump is installed on the top of the refrigeration assembly (2), and a telescopic tube (307) is installed on the input end of the drive pump; an intermediate tube (308) is installed on the side end of the telescopic tube (307).

10. The low-temperature cracking tensile testing device for flame-retardant composite fiber paper rope of cables according to claim 9, characterized in that, The middle tube (308) is equipped with a guide tube (309) at its side end; the bottom of the guide tube (309) is connected to multiple tubes (3010); the bottom of the multiple connecting tubes (3010) passes through the top of the protective glass (301) and is connected to the top of the traction protective cover (304) and the center protective cover (305) respectively.

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