A photoelectric composite cable vertical load repeated winding and retracting test equipment

Abstract

A photoelectric composite cable vertical load repeated winding and retracting test equipment relates to a performance detection device for the photoelectric composite cable, including a power source, a transmission device, a reel fixing frame and a control cabinet, the control cabinet is connected to the power source, a rotating shaft is installed on the reel fixing frame via a bearing, a take-up reel is installed on the rotating shaft, an optical power meter and a multimeter are arranged on one side of the take-up reel, the power source is connected to the rotating shaft, a guide pulley is arranged on the reel fixing frame, a load simulation block is arranged under the take-up reel, and a cable fixing device is arranged on the load simulation block. The invention has a simple structure and is easy to use, can accurately detect the performance of vertical hanging use or vertical hanging laying of the photoelectric composite cable, and provides precise data for accurately evaluating the performance of the photoelectric composite cable.

Description

Technical Field

[0001] The present invention relates to a performance detection device for a photoelectric composite cable, and in detail, is a photoelectric composite cable vertical load repeated winding and releasing test equipment which is simple in structure, easy to use, can accurately detect the performance of the vertical hanging use or vertical hanging laying of the photoelectric composite cable, and provides accurate data for accurately evaluating the performance of the photoelectric composite cable. Background Art

[0002] We know that optoelectronic composite cables are optical fiber and transmission line cores that can simultaneously meet the needs of equipment power consumption, signal transmission and other functions. Optoelectronic composite cables have various functions and complex structures. At present, the use of optoelectronic composite cables in the cable industry is mostly used in fixed laying occasions. The cables do not need to be frequently moved or wound and bent. The comprehensive assessment of optoelectronic composite cables is based on the general performance of the cables and the optical fiber transmission performance. For use in mobile situations, accompanied by repeated winding and bending of the cables and load-bearing conditions, there are currently no effective detection methods and equipment in the industry. In some fields such as geological exploration and mineral collection, some environments require optoelectronic composite cables to be used vertically or vertically suspended and laid. If ordinary optoelectronic composite cables without relevant detection data are selected for use in this environment, their service life cannot be determined, and it is very easy for the optoelectronic composite cables to be damaged during use, affecting normal use. Summary of the invention

[0003] The purpose of the present invention is to solve the deficiencies of the above-mentioned prior art and to provide a photoelectric composite cable vertical load repeated winding and retracting test equipment which has a simple structure, is easy to use, can accurately detect the performance of the vertical hanging use or vertical hanging laying of the photoelectric composite cable, and provides accurate data for accurately evaluating the performance of the photoelectric composite cable.

[0004] The technical solution adopted by the present invention to solve the above-mentioned deficiencies in the prior art is:

[0005] A photoelectric composite cable vertical load repeated winding and releasing test equipment, characterized in that it includes a power source, a transmission device, a reel fixing frame and a control cabinet, the control cabinet is connected to the power source and is used to control the operation of the power source, a rotating shaft is installed on the reel fixing frame via a bearing, a take-up reel for winding the photoelectric composite cable is installed on the rotating shaft, an optical fiber transmission quality detection device and a multimeter are arranged on one side of the take-up reel, the power source is connected to the rotating shaft via the transmission device and is used to drive the rotating shaft to rotate, a guide pulley is arranged on the reel fixing frame above the take-up reel, a load simulation block is arranged below the take-up reel, a cable fixing device is arranged on the load simulation block, and the cable fixing device It comprises a left compression connection block and a right compression connection block, wherein at least the upper part of the left compression connection block and the right compression connection block is provided with a compression gap, the upper parts of the opposite sides of the left compression connection block and the right compression connection block are provided with cable pressing grooves which cooperate with each other, the lower part of the left compression connection block or the right compression connection block is provided with an arc-shaped cable lead-out hole which is connected with the cable pressing groove, and the arc radius of the cable lead-out hole is not less than the minimum bending radius of the optical fiber; the lower part of the cable pressing groove of the right compression connection block or the left compression connection block is in an arc shape which can (or can) guide the end of the optoelectronic composite cable into the cable lead-out hole; the outer sides of the left compression connection block and the right compression connection block are provided with a clamp which presses the two together.

[0006] The power source described in the present invention is a stepper motor or a servo motor, and its speed, start and stop, and forward and reverse rotation can be accurately controlled.

[0007] The control cabinet described in the present invention is a PLC control cabinet, which can effectively control the speed, start and stop, and forward and reverse rotation of the power source.

[0008] The transmission device described in the present invention is a reducer with brake or a clutch brake reducer. The stepper motor or servo motor is connected to the rotating shaft via the reducer or the clutch brake reducer, which can prevent vibration during low-speed rotation and improve the accuracy of detection data.

[0009] The optical fiber transmission quality detection device described in the present invention is an optical power meter, which is used for online detection of optical fiber attenuation characteristics.

[0010] The upper part of the reel fixing frame described in the present invention is provided with an installation and inspection platform, a take-up reel support is provided on the installation and inspection platform, a rotating shaft is installed on the take-up reel support via a bearing, a power source and a transmission device are arranged on the installation and inspection platform, and a cable passing slot is provided on the installation and inspection platform and below the guide pulley; a ladder is provided for staff to install and inspect the platform up and down.

[0011] When the present invention is used, the photoelectric composite cable to be tested is wound on the take-up drum (closely) for several weeks, and then one end is fixed to the take-up drum, and the ends of the two optical fibers in the end are connected to the transmission quality detection device, and the two transmission line cores are connected to the multimeter. The other end of the photoelectric composite cable to be tested is passed around the guide pulley and fixedly connected to the load simulation block: the photoelectric composite cable to be tested is inserted into the cable pressing grooves of the left and right compression connection blocks, and is led out through the cable lead-out hole. The left and right compression connection blocks are relatively compressed using a clamp, and the photoelectric composite cable to be tested is fixed between the two. The two optical fibers in the end of the lead-out photoelectric composite cable to be tested are fused outside the cable lead-out hole, and the two transmission line cores are connected. The control cabinet controls the power source to drive the take-up drum to repeatedly rotate forward for a set number of circles and then reverse for a set number of circles, so that the other end of the optoelectronic composite cable pulls the load simulation block to repeatedly move up and down, and the take-up and release speed of the optoelectronic composite cable is not less than 20m / min; in this process, the optical fiber transmission quality detection device detects the transmission characteristics of the optical fiber to determine whether the optical fiber in the optoelectronic composite cable is instantly damaged, and uses a multimeter to detect the resistance of the transmission line core to determine whether the transmission line core is damaged; until the optical fiber or the transmission line core in the optoelectronic composite cable is damaged, the number of repeated rotations of the take-up drum at this time is recorded, which is the service life of the optoelectronic composite cable under this working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the present invention.

[0013] Figure 2 yes Figure 1 A partial enlarged view of point A.

[0014] Figure 3 It is a structural schematic diagram of the left pressing connection block and the right pressing connection block in the present invention. DETAILED DESCRIPTION

[0015] like Figure 1The photoelectric composite cable vertical load repeated winding and retracting test equipment shown includes a power source 12, a transmission device 13, a reel fixing frame 10 and a control cabinet 11. The power source 12 is a stepper motor or a servo motor with a brake, and the transmission device 13 is a reducer with a brake or a clutch brake reducer. The stepper motor or the servo motor is connected to the rotating shaft through the reducer with a brake or the clutch brake reducer, which can prevent vibration during low-speed rotation, improve the accuracy of the detection data, and can perform emergency braking operations; the control cabinet 11 is a PLC control cabinet; The PLC control cabinet is connected to the stepper motor or servo motor, which can accurately control the speed, start and stop, and forward and reverse rotation of the power source; the PLC control cabinet is connected to a reducer with a brake or a clutch brake reducer to control its braking action; a rotating shaft 5 is installed on the disk fixing frame 10 through a bearing, and a take-up reel 14 for winding the optoelectronic composite cable is installed on the rotating shaft 5. An optical fiber (light) transmission quality detection device 3 and a multimeter are provided on one side of the take-up reel 14. In this embodiment, the optical fiber transmission quality detection device 3 is an optical power meter, which can detect the optical fiber attenuation characteristics online. The stepper motor or servo motor is connected to the rotating shaft through a reducer with a brake or a clutch brake reducer to drive the rotating shaft to rotate. The reducer can prevent the stepper motor or servo motor from oscillating when rotating at a low speed, thereby improving the accuracy of the detection data. A guide pulley 1 is provided on the reel fixing frame on the upper front side of the take-up reel 14, and a load simulation block 9 is provided on the lower front side of the take-up reel. A cable fixing device is provided on the load simulation block 9, and the cable fixing device includes a left compression connecting block 16 and a right compression connecting block 17 fixedly connected to the load simulation block. It can be seen from the figure that the upper parts of the left compression connecting block 16 and the right compression connecting block 17 are provided with a compression gap, and the lower parts are connected as a whole. There is a certain elastic force between the left compression connecting block 16 and the right compression connecting block 17. After the two are pressed toward each other and the external force is removed, the two can automatically restore to their original positions. The left compression connection block 16 and the right compression connection block 17 are provided with mutually matching cable pressing grooves 18 and 19 on the upper part of the opposite sides, and the lower part of the right compression connection block is provided with a circular arc cable lead-out hole 20 connected with the cable pressing groove, and the arc radius of the cable lead-out hole 20 is not less than the minimum bending radius of the optical fiber; the lower part of the cable pressing groove 18 of the left compression connection block is in an arc shape that can guide the end of the optoelectronic composite cable into the cable lead-out hole 20. It can be seen from the figure that the arc-shaped cable lead-out hole 20 corresponds to the arc shape of the lower part of the cable pressing groove of the left compression connection block, and the connecting part is in an arc expansion shape, which is more conducive to the introduction of the end of the optoelectronic composite cable. When in use, one end of the optoelectronic composite cable is directly inserted downward from the upper end of the cable pressing grooves 18 and 19, and its end will smoothly penetrate the cable lead-out hole, which is simple and convenient to operate. The upper outer sides of the left compression connection block and the right compression connection block are provided with a clamp that can compress the two. The diameter of the guide pulley 1 and the weight of the load simulation block 9 can be selected according to the actual use.

[0016] The present invention is further improved, the reel fixing frame 10 is provided with an installation and testing platform 6 on the upper part, a take-up reel support 4 is provided on the installation and testing platform 6, the rotating shaft is installed on the take-up reel support 4 through a bearing, the power source and the transmission device are arranged on the installation and testing platform, and a cable passing slot 7 is provided on the installation and testing platform and below the guide pulley; a ladder 15 is provided for the staff to install the test platform up and down; the disassembly and assembly of the optoelectronic composite cable to be tested is facilitated, and the detection is more convenient.

[0017] When the present invention is used, the optoelectronic composite cable 2 to be tested is wound on the take-up reel (closely) for several weeks, and then one end of the optical fiber is fixed to the take-up reel, and the ends of the two optical fibers at the end are connected to the transmission quality detection device, and the two transmission line cores are connected to the multimeter. As can be seen from the figure, a wiring hole is provided on the baffle on one side of the take-up reel, and one end of the optoelectronic composite cable to be tested is connected to the optical power meter and the multimeter on the outer side of the baffle on one side of the take-up reel after passing through the wiring hole. The optical power meter includes a light emitting part and a light receiving part, one optical fiber is connected to the light emitting part of the optical power meter, and the other optical fiber is connected to the light receiving part of the optical power meter; the two transmission line cores are connected to the two measuring probes of the multimeter, and the end is wound with tape and fixed on the take-up reel, and can also be fixed by clamping. The other end of the optoelectronic composite cable to be tested is passed around the guide pulley and fixedly connected to the load simulation block: the optoelectronic composite cable to be tested is inserted into the cable pressing grooves of the left compression connection block and the right compression connection block, and is led out through the cable lead-out hole. The left compression connection block and the right compression connection block are relatively compressed using a clamp, and the optoelectronic composite cable to be tested is fixed between the two. The two optical fibers in the end of the optoelectronic composite cable to be tested that is led out of the cable lead-out hole are fused by an optical fiber fusion splicer, and the two transmission line cores are electrically connected; the optoelectronic composite cable to be tested is firmly fixed to the load simulation block, and is easy to load and unload without causing damage to the optical fiber and the transmission line core. The PLC control cabinet controls the operation of the power source and the transmission device, driving the take-up drum to repeatedly rotate forward for a set number of circles and then reverse for a set number of circles, so that the other end of the optoelectronic composite cable pulls the load simulation block to repeatedly move up and down. The set number of circles is usually 2-8 circles, preferably 3-5 circles, and the take-up and release speed of the optoelectronic composite cable is not less than 20m / min; in this process, the optical power meter detects the optical fiber transmission intensity online. When the light transmission performance changes ɑ>0.3db / km, the optical fiber is judged to be damaged. The multimeter detects the continuity of the transmission line core. If the transmission line core is broken, it is judged to be damaged; until the optical fiber or the transmission line core in the optoelectronic composite cable is damaged, the number of repeated rotations of the take-up drum at this time is recorded, and the number of times is the service life of the optoelectronic composite cable under this working environment.

Claims

1. A photoelectric composite cable vertical load repeated winding and unwinding test equipment, characterized in that It includes a power source, a transmission device, a reel fixing frame and a control cabinet. The control cabinet is connected to the power source and is used to control the operation of the power source. A rotating shaft is installed on the reel fixing frame via a bearing. A take-up reel for winding the optoelectronic composite cable is installed on the rotating shaft. An optical fiber transmission quality detection device and a multimeter are arranged on one side of the take-up reel. The power source is connected to the rotating shaft via the transmission device and is used to drive the rotating shaft to rotate. A guide pulley is arranged on the reel fixing frame above the take-up reel. A load simulation block is arranged below the take-up reel. A cable fixing device is arranged on the load simulation block. The cable fixing device includes a left clamping connection block and a right clamping connection block. The upper parts of the left clamping connection block and the right clamping connection block are provided with a pressing gap, and the lower parts are connected as a whole. There is a certain elastic force between the left clamping connection block and the right clamping connection block. After the two are pressed toward each other and the external force is removed, the two can automatically restore to their original positions; the upper parts of the left clamping connection block and the right clamping connection block on the opposite sides It is provided with cable pressing grooves that cooperate with each other, and the lower part of the left pressing connection block or the right pressing connection block is provided with an arc-shaped cable lead-out hole connected to the cable pressing groove, and the arc radius of the cable lead-out hole is not less than the minimum bending radius of the optical fiber; the lower part of the cable pressing groove of the right pressing connection block or the left pressing connection block is in an arc shape to guide the end of the optoelectronic composite cable into the cable lead-out hole; the arc-shaped cable lead-out hole corresponds to the arc shape of the lower part of the cable pressing groove of the left pressing connection block, and the connecting part is in an arc expansion shape, and the outer sides of the left pressing connection block and the right pressing connection block are provided with a clamp for pressing the two together; the power source is a stepper motor or a servo motor; the transmission device is a reducer with a brake or a clutch brake reducer; the upper part of the reel fixing frame is provided with an installation and inspection platform, the take-up reel is located on the upper side of the installation and inspection platform, the power source and the transmission device are arranged on the installation and inspection platform, and the installation and inspection platform is provided with a cable passing slot.

2. The photoelectric composite cable vertical load repeated winding and unwinding test equipment according to claim 1 is characterized in that The control cabinet is a PLC control cabinet.

3. The photoelectric composite cable vertical load repeated winding and unwinding test equipment according to claim 2 is characterized in that The optical fiber transmission quality detection device is an optical power meter.

4. The photoelectric composite cable vertical load repeated winding and unwinding test equipment according to claim 3 is characterized in that There is a ladder for staff to install the testing platform up and down.

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