A halogen-free flame-retardant cable bending test machine

Abstract

The present invention discloses a halogen-free flame-retardant cable bending test machine, which relates to the technical field of cable bending test machines. The present invention includes a test box, a control console, and a halogen-free flame-retardant cable. A plurality of insulation boards are fixedly installed inside the test box, and the inner wall of the insulation board is provided with a temperature and humidity control part, and the outer wall of the halogen-free flame-retardant cable is provided with a clamping part. A support frame is fixedly installed on the inner wall of the test box, and a stabilizing part is provided inside the support frame and on the outer wall of the halogen-free flame-retardant cable, and a rotating part is provided inside one side wall of the insulation board. The advantages are: it can make two halogen-free flame-retardant cable bending tests of different strengths be carried out at one time without changing the output strength of the motor, and at the same time, cooperate with the adjustment of the bending point to change the distance and position of the two bending points to meet the needs of multiple groups of different tests, and can reduce the shaking of the halogen-free flame-retardant cable during the test, thereby improving the test accuracy, and can also carry out bending tests under multiple temperature and humidity conditions at the same time.

Description

Technical Field

[0001] The invention relates to the technical field of cable bending testers, and in particular to a halogen-free flame-retardant cable bending tester. Background Art

[0002] The halogen-free flame-retardant cable bending tester is a device used to test the performance of polyether halogen-free flame-retardant cables under bending conditions. It is mainly used to evaluate the flexibility and durability of cables during use, as well as their flame retardant properties at different bending radii.

[0003] In the bending test of halogen-free flame-retardant cables, a motor is usually used to change the output efficiency of the motor to control the bending force. Therefore, one motor can only bend the halogen-free flame-retardant cable with one bending force, and it is impossible to perform bending tests with different bending forces at the same time. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a halogen-free flame-retardant cable bending tester, which solves the problem in the above background technology that only one bending force can be used to bend the halogen-free flame-retardant cable, and bending tests with different bending forces cannot be performed simultaneously.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A halogen-free flame-retardant cable bending tester comprises a test box, a control console, and a halogen-free flame-retardant cable. A plurality of insulation boards are fixedly installed inside the test box, a protective door that is rotatably provided on one side of the test box and matches the insulation board, a support board is fixedly installed inside the test box, a power component is fixedly installed on the top of the support board, a temperature and humidity control part is provided on the inner wall of the insulation board, a clamping part is provided on the outer wall of the halogen-free flame-retardant cable, a counterweight is plugged into the bottom end of the halogen-free flame-retardant cable through a sleeve, a support frame is fixedly installed on the inner wall of the test box, a stabilizing part is provided in the support frame and on the outer wall of the halogen-free flame-retardant cable, and a rotating part is provided in one side wall of the insulation board;

[0007] The rotating part includes a deflection inner gear cylinder, which is rotatably installed inside a side wall of the insulation plate, the inner wall of the deflection inner gear cylinder is meshed with a truncated cone gear column, the inner wall of the truncated cone gear column is fixedly installed with a fixed shaft, the inner wall of the truncated cone gear column is meshed with gear 1 and gear 2, a telescopic shaft is fixedly installed on the inner walls of gear 1 and gear 2, a worm gear is fixedly installed on the outer wall of the telescopic shaft, a fixing frame is sleeved on the outer wall of the telescopic shaft, an electric push rod 1 is fixedly installed on one side of the truncated cone gear column, and the other end of the electric push rod 1 is fixedly installed on the insulation plate, the clamping part is installed on one side of the deflection inner gear cylinder, and the power component cooperates with the worm gear.

[0008] Furthermore, the power component includes a motor 1, which is fixedly mounted on the top of the support plate, and a worm is fixedly mounted on the output end of the motor 1. The outer wall of the worm is meshed with the worm wheel, and the outer wall of the worm is slidably mounted on the fixed frame.

[0009] Furthermore, the clamping part includes a measuring ruler, which is fixedly installed on one side of the deflecting inner gear cylinder, and two sliding sleeves are slidably installed on the outer wall of the measuring ruler, and a fixed block is fixedly installed on one side of the two sliding sleeves, and an electric push rod 2 is fixedly installed on the top of the fixed block, and a connecting block is fixedly installed on one end of the electric push rod 2, and two slide rails are fixedly installed on one side of the fixed block, and two sliding blocks are slidably installed on the outer walls of the two slide rails, and a clamping plate is fixedly installed on one side of the two sliding blocks, and the two clamping plates are clamped on the outer wall of the halogen-free flame-retardant cable, and a rack is fixedly installed on one side of the two sliding blocks, and the two racks are jointly meshed with a gear three, and the gear three is rotatably installed on one side of the fixed block, and a sliding groove matching the connecting block is provided in the fixed block, and a sliding hole connected to the sliding groove is provided on one side of the fixed block, and the connecting block is fixedly installed with the first sliding block through the sliding hole.

[0010] Furthermore, the frustum cone gear column is composed of two cylinders of different sizes, and the outer walls of the two cylinders are respectively fixed with matching gears matching the deflection inner gear cylinder, and the two cylinders are meshed with the deflection inner gear cylinder through the matching gears. Two notches are provided in the fixed shaft, and the gear one and gear two are respectively located in the notches.

[0011] Furthermore, the stabilizing portion includes two support frames, both of which are fixedly mounted on the inner wall of the test box, a plurality of counterweights are placed on the inner walls of the two support frames, the counterweights are movably mounted on the bottom end of the halogen-free flame-retardant cable, and sliding holes are provided inside the two support frames, a slide plate is fixedly mounted in the sliding holes of the two support frames through a plurality of buffer springs, a moving roller is slidably mounted on the inner walls of the two slide plates, a cavity is provided in the moving roller, a rectangular hole connected to the cavity is provided at the top and bottom of the moving roller, a fixing clamp is slidably mounted in the cavity of the moving roller, and the fixing clamp is clamped on the outer wall of the halogen-free flame-retardant cable.

[0012] Furthermore, a sleeve is sleeved at the bottom end of the halogen-free flame-retardant cable, a round hole is opened at the bottom end of the sleeve, the round hole of the sleeve is made of hard rubber around, and the counterweight is plugged into the sleeve through the round hole.

[0013] Furthermore, the fixing clamp is composed of two clamping plates and two electric push rods. Circular holes matching the two electric push rods are provided on both sides of the movable roller. The protruding ends of the electric push rods are located in the circular holes and are slidably plugged into the movable roller. The cylindrical part of the electric push rod is fixedly installed on the outer wall of the movable roller. The two clamping plates are located in the cavity of the movable roller and are slidably installed with the movable roller.

[0014] Furthermore, the temperature and humidity control unit includes a heat dissipation component, which is fixedly mounted on the inner wall of the test chamber, and a plurality of compressors are fixedly mounted on one end of the heat dissipation component, and a thermostat is fixedly connected to one end of each of the plurality of compressors, and the thermostat is fixedly mounted on the inner wall of the insulation board, and a humidifier is fixedly mounted inside each of the plurality of insulation boards.

[0015] Furthermore, the heat dissipation assembly is composed of a fan and a heat dissipation pipe, and the fan and the heat dissipation pipe are fixedly installed on the inner wall of the test box, and the heat dissipation pipe is directly opposite the air outlet of the fan. One end of the heat dissipation pipe is fixedly connected to the compressor, and the other end of the compressor is fixedly connected to the thermostat. Temperature and humidity sensors are fixedly installed on the inner walls of the multiple insulation boards.

[0016] Furthermore, the console input end is electrically installed with the temperature and humidity sensor, and the console output end is electrically installed with the thermostat and the humidifier.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1: By meshing gears of different sizes and changing the transmission ratio, two halogen-free flame-retardant cable bending tests with different strengths can be carried out at one time without changing the output force of the motor. At the same time, the bending point can be adjusted to change the distance and position of the two bending points to meet the needs of multiple groups of different tests. Halogen-free flame-retardant cables with different cross-sectional diameters can also be stably clamped.

[0019] 2: In order to avoid severe shaking of the halogen-free flame retardant cable during the test, replaceable counterweights are added to the bottom of the halogen-free flame retardant cable, and the buffer spring and sliding sleeve are used to flexibly limit the halogen-free flame retardant cable to reduce the shaking of the halogen-free flame retardant cable during the test. Because the shaking will change the bending amplitude of the halogen-free flame retardant cable, reducing the shaking can improve the accuracy of the bending test of the halogen-free flame retardant cable.

[0020] 3: By adding a humidifier and a thermostat, the temperature and humidity of the location of the halogen-free flame-retardant cable can be controlled, and multiple groups of tests can be separated by insulation boards, and temperature and humidity control are designed separately, so that the device can perform bending tests under multiple temperature and humidity conditions at the same time.

[0021] In summary, the present invention can change the transmission ratio by meshing gears of different sizes so that the motor output force remains unchanged, and two halogen-free flame-retardant cable bending tests of different strengths can be performed at one time. At the same time, the bending point can be adjusted to change the distance and position of the two bending points to meet the needs of multiple groups of different tests, and the shaking of the halogen-free flame-retardant cable during the test can be reduced, thereby improving the test accuracy, and bending tests can be performed under multiple temperature and humidity conditions at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The present invention provides a structural schematic diagram of a halogen-free flame-retardant cable bending tester.

[0023] Figure 2 for Figure 1 The schematic diagram of the structure without the test chamber, protective door and control console.

[0024] Figure 3 for Figure 2 Schematic diagram of the structure with the partition removed.

[0025] Figure 4 for Figure 3 Schematic diagram of the structure of the middle section.

[0026] Figure 5 It is a schematic diagram of the structure of the rotating part and the clamping part.

[0027] Figure 6 for Figure 5 Schematic diagram of the top view structure.

[0028] Figure 7 for Figure 6 Schematic diagram of the structure after removing the clamping part and rotating it to a certain angle.

[0029] Figure 8 for Figure 7 Schematic diagram of the cross-sectional structure.

[0030] Fig. 9 for Figure 5 Schematic diagram of the cross-sectional structure.

[0031] Fig.10 for Figure 7 Schematic diagram of the cross-sectional side view structure at AA in the middle.

[0032] Fig.11 It is a schematic diagram of the clamping part structure.

[0033] Fig.12 It is a schematic diagram of the split structure of the clamping part.

[0034] Fig.13 This is a schematic diagram of the structure of the stabilizing part.

[0035] Fig.14 This is a schematic diagram of the split structure of the stabilization part.

[0036] In the figure: 1 test box, 2 control console, 3 protection door, 4 motor 1, 5 heat dissipation component, 6 temperature controller, 7 measuring ruler, 8 deflection internal gear cylinder, 9 frustum gear column, 10 worm gear, 11 electric push rod 1, 12 support frame, 13 counterweight, 14 support plate, 15 worm, 16 insulation board, 17 humidifier, 18 compressor, 19 fixed frame, 20 halogen-free flame retardant cable, 21 gear 1, 22 fixed shaft, 23 gear 2, 24 telescopic shaft, 25 slide plate, 26 buffer spring, 27 moving roller, 28 sliding sleeve, 29 fixed block, 30 clamping plate, 31 rack, 32 sliding block, 33 slide rail, 34 gear 3, 35 electric push rod 2, 36 connecting block, 37 fixing clamp. DETAILED DESCRIPTION

[0037] Reference Figure 1 , Figure 5-Figure 10 A halogen-free flame-retardant cable bending tester comprises a test box 1, a control console 2, and a halogen-free flame-retardant cable 20. A protective door 3 is rotatably installed on one side of the test box 1. A temperature controller 6 is fixedly installed inside the test box 1. A support plate 14 is fixedly installed on the inner wall of the test box 1. A motor 4 is fixedly installed on the top of the support plate 14. A worm 15 is fixedly installed on the output shaft of the motor 4. The outer wall of the worm 15 is provided with a plurality of worm-shaped grooves. The outer wall of the worm 15 is meshed with a plurality of worm wheels 10 matched with the plurality of worm-shaped grooves. The inner wall of the plurality of worm wheels 10 is provided with a plurality of worm-shaped grooves. The walls are all fixedly installed with telescopic shafts 24, and the telescopic shaft 24 has a rectangular piston and a rectangular slide groove. The cooperation of the rectangular piston and the rectangular slide groove makes the telescopic shaft 24 itself can only be telescoped and cannot be rotated (not shown in the figure). The outer walls of multiple telescopic shafts 24 are all fixedly installed with gears 1 21 and gear 2 23. An electric push rod 11 is fixedly installed on one side of the temperature controller 6, and a truncated cone gear column 9 is fixedly installed on the other end of the electric push rod 11. A rotating hole is opened in the truncated cone gear column 9, and it is rotatably installed with the telescopic shaft 24 through the rotating hole.

[0038] The truncated cone gear column 9 is composed of two cylinders with different vertical cross-section radii and inner walls having teeth (named as the first cylinder and the second cylinder for ease of understanding). The inner wall of the first cylinder meshes with the gear 2 23, and the inner wall of the second cylinder meshes with the gear 1 21. While the gears 23 and 1 21 are meshing with the inner wall of the truncated cone gear column 9, the truncated cone gear column 9 can also slide on the outer walls of the gears 23 and 1 21 (see Figure 8 ).

[0039] A fixed shaft 22 is fixedly installed on the inner walls of the two cylinders. Two notches are provided in the fixed shaft 22. Gear 1 21 and gear 2 23 are respectively located in the corresponding notches to ensure that the fixed shaft 22 does not affect the rotation of gear 2 23 and gear 1 21. Two matching gears corresponding to the radii of their respective vertical sections are fixedly installed on one side of the two cylinders of the truncated cone gear column 9. The matching gear size of the first cylinder is larger than the matching gear size of the second cylinder, and the first cylinder is rotatably sleeved on the outer wall of the second cylinder. The outer wall of the truncated cone gear column 9 is sleeved with a deflection inner gear cylinder 8. Two teeth matching the two matching gears are fixedly installed on the inner wall of the deflection inner gear cylinder 8. The distance between the two teeth is larger than the distance between the two matching gears, that is, when one of the matching gears is meshed with the teeth of the deflection inner gear cylinder 8, the other one must not be meshed.

[0040] The outer wall of the telescopic shaft 24 is movably sleeved with a fixing frame 19, and the fixing frame 19 can slide on the outer wall of the telescopic shaft 24 without affecting the rotation of the telescopic shaft 24. The fixing frame 19 is rotatably sleeved on the outer wall of the worm 15. A semicircular groove matching the telescopic shaft 24 is also opened in the fixed shaft 22, and the telescopic shaft 24 is installed in a fit through the semicircular groove.

[0041] When the electric push rod 11 pushes the fixed frame 19, the first cylinder and the second cylinder of the fixed frame 19 move at the same time, and the first cylinder moves forward to separate the teeth of the cooperating gear from the deflection inner gear cylinder 8, and the second cylinder cooperates with the gear to mesh with the deflection inner gear cylinder 8. Conversely, the first cylinder cooperates with the gear to mesh with the deflection inner gear cylinder 8. Through the extension and retraction of the electric push rod 11, different cylinders are switched to mesh with the deflection inner gear cylinder 8, thereby switching gears of different sizes to mesh and changing the transmission ratio. Then, the worm wheel 10 driven by the worm 15 drives the telescopic shaft 24 to rotate, and the telescopic shaft 24 drives the gear 1 21 and the gear 2 23 to rotate, thereby driving the truncated cone gear column 9 to rotate, and the deflection inner gear cylinder 8 is driven to rotate by one of the first cylinder and the second cylinder constituting the truncated cone gear column 9, thereby realizing the switching of the rotation speed of the deflection inner gear cylinder 8 without controlling the power of the motor 4, and realizing the bending test of the halogen-free flame-retardant cable 20 with different strengths.

[0042] Reference Figure 5 , Fig. 9 , Figure 11-Figure 12A measuring ruler 7 is fixedly installed on one side of the deflecting inner gear cylinder 8, a sliding sleeve 28 is slidably installed on the outer wall of the measuring ruler 7, and a rubber layer is fixedly installed on the inner wall of the sliding sleeve 28 to increase the friction between the measuring ruler 7 and the sliding sleeve 28 to prevent the sliding sleeve 28 from sliding down due to gravity (not shown in the figure). By sliding between the sliding sleeve 28 and the measuring ruler 7, the clamping position of the halogen-free flame-retardant cable 20 can be adjusted, thereby changing its bending point, so that the device can perform bending tests of different lengths on the halogen-free flame-retardant cable 20, and the scope of application is wider. The sliding sleeve 2 A fixed block 29 is fixedly installed on one side of 8, a slide rail 33 is fixedly installed on one side of the fixed block 29, two sliding blocks 32 are slidably installed on the outer wall of the slide rail 33, and a clamping plate 30 is fixedly installed on one side of the two sliding blocks 32. The two clamping plates 30 are clamped on the outer wall of the halogen-free flame-retardant cable 20, and a rack 31 matching the deflection inner gear cylinder 8 is fixedly installed on the top or bottom of the two clamping plates 30. The two racks 31 are horizontally arranged, and the outer surfaces of the two racks 31 are meshed with a gear three 34, and the gear three 34 is rotatably installed on one side of the fixed block 29;

[0043] A slide groove is provided in the fixed block 29, and a slide hole connected to the slide groove is provided on the side of the fixed block 29. A connecting block 36 is slidably installed on the fixed block 29 through the slide groove. One side of the connecting block 36 slides through the fixed block 29 through the slide hole. One end of the connecting block 36 is fixedly installed with the first sliding block 32. An electric push rod 2 35 is fixedly installed on the top of the fixed block 29, and one end of the electric push rod 2 35 is fixedly installed with the connecting block 36.

[0044] The connecting block 36 is driven to move left and right by the electric push rod 2 35, thereby driving the first sliding block 32 to move left and right, the sliding block 32 drives the first rack 31 to move, and the second rack 31 is driven to move in the opposite direction by the gear 3 34. The two racks 31 are both equipped with the same sliding block 32 and clamping plate 30. The two racks 31 moving in opposite directions can make the clamping plates 30 approach or move away from each other, so that the halogen-free flame-retardant cables 20 with different cross-sectional radii can be clamped.

[0045] After the clamping position of the halogen-free flame retardant cable 20 is adjusted and the halogen-free flame retardant cable 20 is stably clamped, the clamped halogen-free flame retardant cable 20 is rotated by rotating the deflected inner gear cylinder 8, and the halogen-free flame retardant cable 20 is bent at the clamping point, and the bending test of the halogen-free flame retardant cable 20 can be carried out.

[0046] Reference Figure 3-Figure 4 as well as Figure 13-14The lower end of the halogen-free flame-retardant cable 20 is clamped with a counterweight 13 through a sleeve (not shown in the figure). The upper half of the sleeve is made of soft rubber and has a certain elasticity. The upper half is sleeved with the halogen-free flame-retardant cable 20, and its elasticity can adapt to halogen-free flame-retardant cables 20 of different thicknesses. The lower half is hard rubber, and a round hole (not shown in the figure) is opened at the bottom to match the counterweight 13. By inserting the round head of the counterweight 13 into the round hole, the hard rubber makes the ball at the top of the counterweight 13 (see Fig.13 ) When the ball is inserted into the round hole, the round hole is expanded outward. After the ball is completely inserted, the round hole shrinks, so that the hard rubber is stuck at the connection between the ball and the counterweight 13, and the installation of the counterweight 13 is completed. There are multiple counterweights 13 with different weights. The counterweights 13 of different weights can be replaced according to the test requirements. The weight of the counterweight 13 is used to reduce the swing of the halogen-free flame-retardant cable 20 during the test;

[0047] The outer wall of the halogen-free flame-retardant cable 20 is clamped with a fixing clamp 37, and the fixing clamp 37 is composed of two clamping plates and two electric push rods. A plurality of support frames 12 are fixedly installed on the inner wall of the test box 1, and sliding holes are opened on the plurality of support frames 12. A slide plate 25 is fixedly installed in the sliding holes of the support frames 12 through a buffer spring 26. A moving roller 27 is slidably installed on the inner wall of the slide plate 25. The moving roller 27 is provided with a cavity, and circular holes connected to the cavity are opened on both sides, and rectangular holes connected to the cavity are opened on the top and bottom. The telescopic end of the electric push rod is located in the circular hole and is slidably plugged into the moving roller 27. The cylindrical part of the electric push rod is fixedly installed on the outer wall of the moving roller 27. The two clamping plates are located in the cavity of the moving roller 27 and are slidably installed with the moving roller 27.

[0048] Before conducting the test, the halogen-free flame retardant cable 20 is first inserted into the rectangular hole of the moving roller 27, and then the two clamping plates are driven close to each other by the electric push rod to clamp the halogen-free flame retardant cable 20, and then the weight is inserted into the circular hole of the bottom sleeve of the halogen-free flame retardant cable 20. During the test, the moving roller 27 is driven to slide upward on the inner wall of the slide plate 25, and the buffer spring 26 absorbs the force of the moving roller 27 shaking left and right, providing buffering and reducing the swinging of the weight at the bottom of the halogen-free flame retardant cable 20.

[0049] Reference Figure 1-Figure 4 The control console 2 is fixedly mounted on one side of the test box 1. A heat dissipation assembly 5 is fixedly mounted on the bottom of the inner wall of the test box 1. The heat dissipation assembly 5 is composed of a fan and a heat dissipation pipe. The fan and the heat dissipation pipe are fixedly mounted on the inner wall of the test box 1, and the heat dissipation pipe is directly opposite to the air outlet of the fan. One end of the heat dissipation pipe is fixedly connected to a plurality of compressors 18. The other ends of the plurality of compressors 18 are fixedly connected to a thermostat 6. A semiconductor refrigeration plate is arranged in the thermostat 6. The heat dissipation water in the heat dissipation pipe is used to cool the heating surface of the semiconductor refrigeration plate. A plurality of insulation plates 16 are fixedly mounted in the test box 1 (see Figure 2 ), the deflection inner gear cylinder 8 is rotatably installed inside one side wall of the insulation board 16, multiple halogen-free flame-retardant cables 20 are separated from each other by the insulation board 16, the protection door 3 can cooperate with the insulation board 16, and the halogen-free flame-retardant cables 20 can be placed in the insulation board 16 for testing by opening the protection door 3, and multiple thermostats 6 are respectively fixedly installed on the inner walls of the insulation board 16, and the inner walls of the multiple insulation boards 16 are fixedly installed with temperature and humidity sensors, and the interiors of the multiple insulation boards 16 are fixedly installed with humidifiers 17.

[0050] A display screen and control buttons are fixedly installed on the console 2. The temperature and humidity measured by the temperature and humidity sensor are displayed on the screen. The input end of the console 2 is electrically installed with the temperature and humidity sensor, and the output end of the console 2 is electrically installed with the thermostat 6 and the humidifier 17. The temperature and humidity are set by the control buttons, and the output power of the thermostat 6 and the humidifier 17 is controlled by the console 2, thereby achieving temperature and humidity control.

[0051] When the temperature and humidity sensor measures that the temperature is too high, the control console 2 starts the thermostat 6 to lower the temperature inside the insulation board 16. The heat from its heating surface is taken away by the cooling water in the heat pipe, and the heat from the cooling water is taken away by the cooling component 5 to accelerate the air flow. When the thermostat 6 lowers the temperature to the set temperature, the control console 2 controls the insulation board 16 to stop working, thereby achieving temperature control. When the temperature and humidity sensor measures that the humidity is too low, the control console 2 starts the humidifier 17 to humidify the inside of the insulation board 16, and stops when the humidity reaches the set humidity, thereby achieving humidity control. At the same time, the temperature inside multiple insulation boards 16 is tested separately by multiple temperature sensors, and the temperature is set separately by control buttons. The output power of the thermostats 6 and humidifiers 17 in multiple insulation boards 16 are all controlled by the control console 2.

[0052] In the present invention, the working principle of a halogen-free flame-retardant cable bending tester includes the following steps:

[0053] First, the preparation work before the test is carried out: insert one end of the halogen-free flame-retardant cable 20 from the top of the moving roller 27, pass through the moving roller 27, and install the counterweight 13 required for the test to the bottom of the halogen-free flame-retardant cable 20 through the sleeve at the bottom of the halogen-free flame-retardant cable 20, and then use the electric push rod of the fixed clamp 37 to push the two clamps to clamp the halogen-free flame-retardant cable 20, and then slide the sliding sleeve 28 on the measuring ruler 7 to adjust the distance between the two sliding sleeves 28. After reaching the distance required for the test, put the halogen-free flame-retardant cable 20 into the two clamps. Between the plates 30, the connecting block 36 is retracted by the electric push rod 2 35, driving the rack 31 to move, and meshing with the two racks 31 through the gear 3 34, and at the same time driving the two clamping plates 30 to approach each other, clamping the halogen-free flame-retardant cable 20, which can adapt to halogen-free flame-retardant cables 20 of different thicknesses, and then setting the temperature and humidity inside the multiple insulation plates 16 through the control buttons on the console 2, waiting for the console 2 to control the thermostat 6 and the humidifier 17 to control the temperature and humidity inside the insulation plate 16, and the test can be started after the temperature and humidity are set.

[0054] During the test: the motor 4 drives the worm 15 to rotate, the worm 15 drives multiple worm wheels 10 to rotate simultaneously, and drives the truncated cone gear column 9 to rotate through the gear 1 21 and the gear 2 23, the truncated cone gear column 9 then drives the deflection inner gear cylinder 8 to rotate, the rotation of the deflection inner gear cylinder 8 drives the measuring ruler 7 to rotate, and the halogen-free flame-retardant cable 20 clamped at two points is bent. When it is necessary to change the transmission ratio and thus the bending force, the truncated cone gear column 9 is pushed forward in the deflection inner gear cylinder 8 by the electric push rod 11, and the second cylinder is switched to engage with the deflection inner gear cylinder 8, thereby changing the transmission ratio and then changing the bending force.

[0055] When controlling temperature and humidity: the temperature inside the insulation board 16 is cooled by the thermostat 6, the heat at the heating end of the insulation board 16 will be taken away by the heat dissipation component 5, and the humidifier 17 humidifies the inside of the thermostat 6. The temperature and humidity information is measured by the temperature and humidity sensor and transmitted to the control console 2, and then the control console 2 sets the temperature and humidity according to the control button to control the output power of the thermostat 6 and the humidifier 17.

[0056] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A halogen-free flame-retardant cable bending tester, comprising a test box (1), a control console (2), and a halogen-free flame-retardant cable (20), characterized in that: A plurality of insulation boards (16) are fixedly installed inside the test box (1); a protective door (3) that cooperates with the insulation board (16) is rotatably installed on one side of the test box (1); a support board (14) is fixedly installed inside the test box (1); a power component is fixedly installed on the top of the support board (14); a rotating part is provided inside a side wall of the insulation board (16); a temperature and humidity control part is provided on the inner wall of the insulation board (16); a clamping part that cooperates with a halogen-free flame-retardant cable (20) is provided on the rotating part; a counterweight (13) is inserted at the bottom end of the halogen-free flame-retardant cable (20) through a sleeve; a support frame (12) is fixedly installed on the inner wall of the test box (1); a stabilizing part that cooperates with the halogen-free flame-retardant cable (20) is provided inside the support frame (12); The rotating part comprises a deflection inner gear cylinder (8), the deflection inner gear cylinder (8) is rotatably mounted inside a side wall of a thermal insulation plate (16), the inner wall of the deflection inner gear cylinder (8) is meshed with a truncated cone gear column (9), the inner wall of the truncated cone gear column (9) is fixedly mounted with a fixed shaft (22), the inner wall of the truncated cone gear column (9) is meshed with a gear 1 (21) and a gear 2 (23), a telescopic shaft (24) is fixedly mounted on the inner walls of the gear 1 (21) and the gear 2 (23), a worm gear (10) is fixedly mounted on the outer wall of the telescopic shaft (24), a fixing frame (19) is sleeved on the outer wall of the telescopic shaft (24), an electric push rod 1 (11) is fixedly mounted on one side of the truncated cone gear column (9), the other end of the electric push rod 1 (11) is fixedly mounted on the thermal insulation plate (16), the clamping part is mounted on one side of the deflection inner gear cylinder (8), and the power component cooperates with the worm gear (10).

2. The halogen-free flame-retardant cable bending tester according to claim 1, characterized in that: The power component comprises a motor 1 (4), the motor 1 (4) being fixedly mounted on the top of a support plate (14), a worm (15) being fixedly mounted on an output end of the motor 1 (4), an outer wall of the worm (15) being meshed with a worm wheel (10), and an outer wall of the worm (15) being slidably mounted on a fixed frame (19).

3. The halogen-free flame-retardant cable bending tester according to claim 2, characterized in that: The clamping portion comprises a measuring ruler (7), the measuring ruler (7) being fixedly mounted on one side of a deflecting inner gear cylinder (8), two sliding sleeves (28) being slidably mounted on the outer wall of the measuring ruler (7), one side of each of the two sliding sleeves (28) being fixedly mounted with a fixing block (29), a second electric push rod (35) being fixedly mounted on the top of the fixing block (29), a connecting block (36) being fixedly mounted on one end of the second electric push rod (35), two slide rails (33) being fixedly mounted on one side of the fixing block (29), two slide blocks (32) being slidably mounted on the outer walls of the two slide rails (33), and the two slide blocks (32) A clamping plate (30) is fixedly installed on one side of each of the two sliding blocks (32), and the two clamping plates (30) are in contact with the outer wall of the halogen-free flame-retardant cable (20). A rack (31) is fixedly installed on one side of each of the two sliding blocks (32), and the two racks (31) are meshed with a gear three (34). The gear three (34) is rotatably installed on one side of the fixed block (29). A sliding groove that matches the connecting block (36) is provided in the fixed block (29), and a sliding hole that is connected to the sliding groove is provided on one side of the fixed block (29). The connecting block (36) is fixedly installed with the first sliding block (32) through the sliding hole.

4. The halogen-free flame-retardant cable bending tester according to claim 3, characterized in that: The truncated cone gear column (9) is composed of two cylinders of different sizes, the two cylinders are installed in a rotatable sleeve connection, and the outer walls of the two cylinders are respectively fixed with matching gears that match the deflection inner gear cylinder (8). The two cylinders are meshed with the deflection inner gear cylinder (8) through the matching gears. Two notches are provided in the fixed shaft (22), and the gear 1 (21) and the gear 2 (23) are respectively located in the notches.

5. The halogen-free flame-retardant cable bending tester according to claim 1, characterized in that: The stabilizing portion comprises two support frames (12), the two support frames (12) are fixedly mounted on the inner wall of the test box (1), the counterweight (13) is movably mounted on the bottom end of the halogen-free flame-retardant cable (20), the two support frames (12) are provided with sliding holes inside, a slide plate (25) is fixedly mounted in the slide holes of the two support frames (12) via a plurality of buffer springs (26), a moving roller (27) is slidably mounted on the inner walls of the two slide plates (25), a cavity is provided inside the moving roller (27), a rectangular hole connected to the cavity is provided at the top and bottom of the moving roller (27), a fixing clamp (37) is slidably mounted in the cavity of the moving roller (27), and the fixing clamp (37) is clamped on the outer wall of the halogen-free flame-retardant cable (20).

6. The halogen-free flame-retardant cable bending tester according to claim 5, characterized in that: The upper half of the sleeve is made of soft rubber and is sleeved with the halogen-free flame-retardant cable (20); the lower half of the sleeve is made of hard rubber and has a round hole at the bottom thereof that matches the counterweight (13).

7. The halogen-free flame-retardant cable bending tester according to claim 6, characterized in that: The fixing clamp (37) is composed of two clamping plates and two electric push rods. Circular holes matching the two electric push rods are provided on both sides of the moving roller (27). The extended ends of the electric push rods are located in the circular holes and are slidably plugged and mounted with the moving roller (27). The fixed ends of the electric push rods are fixedly mounted on the outer wall of the moving roller (27). The two clamping plates are located in the cavity of the moving roller (27) and are slidably mounted with the moving roller (27).

8. The halogen-free flame-retardant cable bending tester according to claim 1, characterized in that: The temperature and humidity control unit comprises a heat dissipation component (5), the heat dissipation component (5) is fixedly mounted on the inner wall of the test box (1), a plurality of compressors (18) are fixedly mounted on one end of the heat dissipation component (5), one end of each of the plurality of compressors (18) is fixedly connected to a temperature controller (6), the temperature controller (6) is fixedly mounted on the inner wall of a temperature insulation board (16), and a humidifier (17) is fixedly mounted inside each of the plurality of temperature insulation boards (16).

9. The halogen-free flame-retardant cable bending tester according to claim 8, characterized in that: The heat dissipation assembly (5) is composed of a fan and a heat dissipation pipe. The fan and the heat dissipation pipe are fixedly mounted on the inner wall of the test box (1), and the heat dissipation pipe is directly opposite to the air outlet of the fan. One end of the heat dissipation pipe is fixedly connected to the compressor (18), and the other end of the compressor (18) is fixedly connected to the temperature controller (6). The inner walls of the plurality of insulation boards (16) are fixedly mounted with temperature and humidity sensors.

10. The halogen-free flame-retardant cable bending tester according to claim 9, characterized in that: The input end of the control console (2) is electrically mounted with the temperature and humidity sensor, and the output end of the control console (2) is electrically mounted with the temperature controller (6) and the humidifier (17).

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