A performance testing device for cable protection tube

Abstract

The present invention discloses a performance testing device for a cable protection tube, which is applied to the technical field of performance testing of cable protection tubes. The device comprises a base, a supporting mechanism, a bending mechanism and two sets of reset mechanisms, wherein the supporting mechanism, the bending mechanism and the two sets of reset mechanisms are all arranged on the top of the base, the bending mechanism is arranged on the front side of the supporting mechanism, and the two sets of reset mechanisms are arranged on the left and right sides of the supporting mechanism; the supporting mechanism comprises a supporting assembly, a pressure detection assembly and a visual detection assembly, the supporting assembly is arranged on the base, the pressure detection assembly and the visual detection assembly are both arranged on the supporting assembly, the supporting assembly comprises a bracket, a slider, a movable block and a supporting plate, a pressure sensor is arranged on the top of the supporting plate, and the pressure sensor is electrically connected to a pressure detection module. The present invention can realize bending performance testing of cable protection tubes in various situations.

Description

Technical Field

[0001] The present invention relates to the technical field of performance detection of cable protection tubes, in particular to a performance detection device for cable protection tubes. Background Art

[0002] With the continuous development of electric power communication industry, cable protection tubes have also been widely used. Cable protection tubes are a kind of protective tubes with isolation effect that are installed at the intersection of communication cables and power lines to prevent short circuit accidents caused by broken power lines and thus affect communication cables.

[0003] Because some cable areas in a cable system bend and turn during routing, the protective tube needs to bend simultaneously, so the bending resistance of the protective tube needs to be tested during the inspection process. However, the current inspection process usually adopts a detection method that applies external pressure to the protective tube to cause it to bend and deform, and then checks whether the protective tube is damaged. However, this inspection process cannot reflect the distance between the pressure point and the bending point that causes the protective tube to bend during use, which affects the overall bending condition of the protective tube. Therefore, simply applying pressure to the protective tube is not enough to simulate the actual use of the protective tube, and the bending deformation caused by the protective tube when it is subjected to non-continuous external impact during use. The current inspection process cannot meet the actual inspection needs.

[0004] Therefore, it is necessary to provide a performance testing device for cable protection tubes to solve the above problems. Summary of the Invention

[0005] The object of the present invention is to provide a performance testing device for a cable protection tube, which can realize bending resistance testing of the cable protection tube in various situations, so as to solve the problems raised in the above background technology.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: a performance testing device for a cable protection tube, comprising a base, a support mechanism, a bending mechanism, and two sets of reset mechanisms, wherein the support mechanism, the bending mechanism, and the two sets of reset mechanisms are all arranged on the top of the base, the bending mechanism is arranged on the front side of the support mechanism, and the two sets of reset mechanisms are arranged on the left and right sides of the support mechanism;

[0007] The support mechanism includes a support assembly, a pressure detection assembly and a visual detection assembly. The support assembly is arranged on the base. The pressure detection assembly and the visual detection assembly are both arranged on the support assembly. The support assembly includes a bracket 1, a slider 1, a movable block and a support plate. A pressure sensor 1 is arranged on the top of the support plate. The pressure sensor 1 is electrically connected to a pressure detection module. The pressure detection module is used to detect the pressure when the protective tube is bent and make a judgment based on the obtained pressure data. The pressure detection assembly includes two sets of detection frames, a pressure sensor 2 and a stop block.

[0008] The visual detection component includes a bracket 2 and a camera, the camera is electrically connected to a visual recognition module, and the visual recognition module is used to obtain the image captured by the camera and identify the deformation of the protective tube;

[0009] The bending mechanism includes a support frame, a bending assembly and two sets of clamps, the support frame is arranged on the base, the bending assembly is arranged on the support assembly, and the two sets of clamps are arranged on the support frame;

[0010] The reset mechanism comprises a movable component and a restoration component. The movable component is arranged on the top of the base, and the restoration component is arranged on the movable component.

[0011] According to the above technical solution, bracket 1 is fixed to the top of the base, the top of bracket 1 is fixedly connected to slide rail 1, the side of bracket 1 close to the bending mechanism is fixedly connected to motor 1, slider 1 and movable block are arranged inside slide rail 1, slider 1 is slidably connected to slide rail 1, movable block is arranged inside slide rail 1, and slider 1 is connected to the output end of motor 1 by screw transmission;

[0012] The top of the slide rail is provided with a plurality of fasteners, and the bottom of the movable block is provided with limiting holes on both sides perpendicular to the setting direction of the slide rail, and the fasteners are arranged in the limiting holes.

[0013] According to the above technical solution, the slider 1 and the movable block are slidably connected with sliding columns at the same height, and the two groups of sliding columns are slidably connected with connecting columns at one end close to each other. A spring is provided on the sliding column, and the two ends of the spring are fixedly connected to the connecting column and the sliding column respectively. A lifting frame is provided on the connecting column, and the support plate is rotatably connected to the top of the lifting frame. The lifting frame is provided with sliding grooves 1 on both sides perpendicular to the setting direction of the connecting column, and fasteners 2 are provided in the sliding grooves 1.

[0014] According to the above technical solution, two sets of detection frames are respectively set on the top of the slider 1 and the movable block, the pressure sensor 2 is fixed inside the detection frame, the side of the pressure sensor 2 is fixedly connected to a rubber pad, and the pressure sensor 2 is electrically connected to the pressure detection module;

[0015] Two slide grooves are provided on the upper and lower sides of the detection frame, and a movable frame is slidably connected inside the detection frame. The stop block is arranged inside the movable frame, and the stop block is rotatably connected to the movable frame. Both ends of the stop block are arranged in the two slide grooves, and the stop block is slidably connected to the detection frame.

[0016] According to the above technical solution, the second bracket is fixed to the side of the slider one close to the bending mechanism, and the camera is fixed to the bottom of the second bracket.

[0017] According to the above technical solution, the support frame includes bracket three, a hydraulic cylinder and four groups of limiting columns. The hydraulic cylinder and limiting columns are fixed to the top of the base. Bracket three is slidingly connected to the limiting columns, and the output end of the hydraulic cylinder is fixedly connected to bracket three.

[0018] According to the above technical solution, the bending assembly includes a second motor, a first cylinder, two sets of connecting rods, and two sets of connecting rods. The top of the third bracket is fixedly connected to the second slide rail. The second motor is fixed to the side of the second slide rail away from the first bracket. The top of the second slide rail is slidably connected to the second slide rail. The output end of the second motor is connected to the second slide rail by a screw drive. The first cylinder is fixed to the top of the second slide rail.

[0019] The output end of the cylinder 1 is fixedly connected to a connecting piece, and the two sides of the connecting piece perpendicular to the setting direction of the cylinder 1 are respectively hinged to the two sets of connecting rods 1, and the side of the connecting piece away from the cylinder 1 is hinged to the two sets of connecting rods 2. The two sets of connecting rods 2 are respectively arranged on the upper and lower sides of the connecting piece, and the two sets of connecting rods 2 are respectively slidably connected to the connecting rod 1;

[0020] The second connecting rod is provided with a through slot, a fastener is provided inside the through slot, the first connecting rod is provided with a mounting hole, the end of the fastener is provided in the mounting hole, and the fastener can be a bolt or other fastener that can play a fastening role;

[0021] The clamp is hinged to an end of the connecting rod away from the connecting piece.

[0022] According to the above technical solution, the movable component includes a movable platform and motor three. The movable platform is arranged on the top of the base. The bottom of the end of the movable platform close to the bracket one is rotatably connected to the base. A number of universal wheels are provided at the bottom of the end of the movable platform away from the bracket one. A movable seat is provided on the top of the movable platform. An arc-shaped rack is fixedly connected to the side of the top of the base away from the bracket one. Motor three is fixed to the top of the end of the movable platform away from the bracket one. The output end of motor three is connected to the arc-shaped rack by gear meshing.

[0023] According to the above technical solution, the restoration component includes a robot, a rotating shaft, a connecting shaft and several fixed blocks. The robot is fixed on the top of the mobile seat. The end of the robot is rotatably connected to the rotating shaft. The end of the rotating shaft away from the robot is rotatably connected to the connecting shaft. One group of the several fixed blocks is fixed on the connecting shaft, and the remaining fixed blocks are fixed on the rotating shaft. Several cylinder twos are circumferentially arranged in the radial direction of the connecting shaft. Cylinder two is fixedly connected to the fixed block, and the output end of cylinder two is fixedly connected to the clamp seat.

[0024] Compared with the prior art, the beneficial effects achieved by the present invention are: the present invention, by providing a supporting mechanism, a bending mechanism and a resetting mechanism, can realize a variety of switchable detections on the cable protection tube and realize dynamic adjustment of the bending angle of the cable protection tube. At the same time, it can automatically restore the internal shape of the protection tube after the detection is completed, and trigger the visual inspection module to perform a secondary evaluation of the restored protective tube to verify its fatigue resistance and recovery ability, thereby helping to improve the diversity and accuracy of the performance detection of the protective tube, and at the same time helping to improve the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a schematic top view of part of the structure of the present invention;

[0028] Figure 3 It is a partial structural exploded schematic diagram of the support mechanism and bending mechanism of the present invention;

[0029] Figure 4 The present invention Figure 3 Schematic diagram of the enlarged structure of area A in the middle;

[0030] Figure 5 is a side cross-sectional schematic diagram of the support mechanism and the bending mechanism of the present invention;

[0031] Figure 6 The present invention Figure 5 Schematic diagram of the enlarged structure of the middle B area;

[0032] Figure 7 The present invention Figure 1 Schematic diagram of the enlarged structure of the middle C area;

[0033] Figure 8 It is a schematic diagram of the overall structure of the reset mechanism of the present invention;

[0034] Figure 9 The present invention Figure 8 Schematic diagram of the enlarged structure of the middle D area;

[0035] In the figure: 1. Base;

[0036] 2. Support mechanism; 21. Bracket 1; 22. Slide rail 1; 23. Motor 1; 24. Slider 1; 25. Movable block; 26. Limit hole 2; 27. Fastener 1; 28. Detection frame; 29. ​​Pressure sensor 2; 210. Rubber pad; 211. Movable frame; 212. Stop block; 213. Slide groove 2; 214. Sliding column; 215. Connecting column; 216. Spring; 217. Lifting frame; 218. Support plate; 219. Fastener 2; 220. Bracket 2; 221. Camera;

[0037] 3. Bending mechanism; 31. Bracket 3; 32. Hydraulic cylinder; 33. Limiting column; 34. Motor 2; 35. Slide rail 2; 36. Slider 2; 37. Cylinder 1; 38. Connector; 39. Connecting rod 1; 310. Connecting rod 2; 311. Fastener; 312. Through slot; 313. Clamp;

[0038] 4. Reset mechanism; 41. Movable platform; 42. Motor 3; 43. Arc rack; 44. Robot; 45. Rotating shaft; 46. Connecting shaft; 47. Fixed block; 48. Cylinder 2; 49. Clamping seat; 410. Moving seat. DETAILED DESCRIPTION

[0039] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0040] See also Figure 1-9 The present invention provides a technical solution: a performance testing device for a cable protection tube, comprising a base 1, a supporting mechanism 2, a bending mechanism 3 and two sets of reset mechanisms 4. The supporting mechanism 2, the bending mechanism 3 and the two sets of reset mechanisms 4 are all arranged on the top of the base 1, the bending mechanism 3 is arranged on the front side of the supporting mechanism 2, and the two sets of reset mechanisms 4 are arranged on the left and right sides of the supporting mechanism 2. The supporting mechanism 2 is used to provide support for the protection tube to be tested and during testing. The bending mechanism 3 is used to bend and stretch the protection tube. The reset mechanism 4 is used to perform internal restoration of the protection tube.

[0041] Specifically, such as Figure 1-Figure 3 As shown, the support mechanism 2 includes a support component, a pressure detection component and a visual detection component. The support component is arranged on the base 1, and the pressure detection component and the visual detection component are both arranged on the support component. The support component is used to provide support and limit for the protective tube, the pressure detection component is used to detect the stress condition of the protective tube when it is bent, and the visual detection component is used to detect the deformation of the protective tube.

[0042] Further, such as Figures 1-4 and Figure 6 As shown, the support assembly includes a bracket 21, a slider 24, a movable block 25 and a support plate 218. The bracket 21 is fixed to the top of the base 1. The top of the bracket 21 is fixedly connected to the slide rail 22. The side of the bracket 21 close to the bending mechanism 3 is fixedly connected to the motor 23. The slider 24 and the movable block 25 are arranged inside the slide rail 22. The slider 24 is slidably connected to the slide rail 22. The movable block 25 is arranged inside the slide rail 22. The slider 24 and the output end of the motor 23 are connected by a screw drive. The movable block 25 is arranged on the periphery of the screw and is not connected to the screw. The motor 23 is used to drive the slider 24 to move in the slide rail 22 toward or away from the movable block 25 through the screw drive.

[0043] Several fasteners 27 are provided on the top of the slide rail 22, and limiting holes 1 are provided on both sides of the bottom of the movable block 25 perpendicular to the setting direction of the slide rail 22. Fasteners 27 are provided in the limiting holes 1, and the ends of the fasteners 27 are inserted into the limiting holes 26. The fasteners 27 are used to connect the movable block 25 and the slide rail 22 to limit the movable block 25.

[0044] Further, such as Figure 4-Figure 6 As shown, the slider 1 24 and the movable block 25 are slidably connected with sliding columns 214 at the same height, and the two groups of sliding columns 214 are slidably connected with connecting columns 215 at one end close to each other. A spring 216 is provided on the sliding column 214, and the two ends of the spring 216 are fixedly connected to the connecting column 215 and the sliding column 214 respectively. A lifting frame 217 is provided on the connecting column 215, and a support plate 218 is rotatably connected to the top of the lifting frame 217. A pressure sensor 1 is provided on the top of the support plate 218. Slide grooves 1 are provided on both sides of the lifting frame 217 perpendicular to the setting direction of the connecting column 215. A fastener 219 is provided in the slide groove 1. The fastener 219 is used to limit the position of the lifting frame 217 on the connecting column 215, thereby adjusting the height of the support plate 218. The pressure sensor 1 is electrically connected to a pressure detection module. The pressure detection module is used to detect the pressure when the protective tube is bent and make a judgment based on the acquired pressure data.

[0045] Further, such as Figure 3-Figure 4 As shown, the pressure detection assembly includes two sets of detection frames 28, a second pressure sensor 29 and a stop block 212. The two sets of detection frames 28 are respectively arranged on the top of the slider 1 24 and the movable block 25. The second pressure sensor 29 is fixed inside the detection frame 28. The second pressure sensor 29 is electrically connected to the pressure detection module. A rubber pad 210 is fixedly connected to the side of the second pressure sensor 29. The rubber pad 210 is used to buffer the pressure of squeezing the second pressure sensor 29 when bending the protective tube to prevent sudden impact damage to the rubber pad 210.

[0046] A second slide groove 213 is provided on the upper and lower sides of the detection frame 28, and the movable frame 211 is slidably connected inside the detection frame 28. The stop block 212 is arranged inside the movable frame 211, and the stop block 212 is rotatably connected to the movable frame 211. The two ends of the stop block 212 are arranged in the second slide groove 213, and the stop block 212 is slidably connected to the detection frame 28.

[0047] Further, such as Figure 3 and Figure 5As shown, the visual inspection component includes a bracket 220 and a camera 221. The bracket 220 is fixed to the side of the slider 1 24 close to the bending mechanism 3. The camera 221 is fixed to the bottom of the bracket 220. The camera 221 is used to photograph the protective tube before, during and after the inspection. The camera 221 is electrically connected to a visual recognition module. The visual recognition module is used to obtain the picture taken by the camera 221 and identify the deformation of the protective tube.

[0048] It should be noted that both the first fastener 27 and the second fastener 219 can be bolts or other fasteners that can play a fastening role.

[0049] In actual operation, the staff adjusts the position of the movable block 25 by adjusting the position of the fastener 27 in the upper limit hole 26 of the slide rail 22 according to the actual diameter and shape of the cable protection tube to be tested, and adjusts the position of the movable block 25 by adjusting the fastener 219, thereby adjusting the position of the lifting frame 217 on the connecting column 215, thereby adjusting the height of the support plate 218; then the protection tube is placed on the support plate 218, and at this time the motor 23 is controlled to start forward rotation, and the slider 24 is driven to approach the movable block 25 through the screw transmission to clamp the protection tube, conversely, the motor 23 is controlled to start reverse rotation to release the clamping of the protection tube; after the motor 23 is started, when the slider 24 is driven to approach or move away from the movable block 25, the connecting column 215 can be kept in the center position between the slider 24 and the movable block 25 under the action of the elastic force or tension of the spring 216.

[0050] Specifically, such as Figure 1-Figure 3 and Figure 7 As shown, the bending mechanism 3 includes a support frame, a bending assembly and two sets of clamps 313. The support frame is arranged on the base 1, the bending assembly is arranged on the support assembly, and the two sets of clamps 313 are arranged on the support frame. The support frame is used to provide support for the bending assembly and adjust the height of the bending assembly. The bending assembly is used to bend and deform the protective tube on the support mechanism 2, and the clamp 313 is used to clamp the protective tube to be tested.

[0051] Further, such as Figure 1-Figure 3 As shown, the support frame includes a bracket three 31, a hydraulic cylinder 32 and four groups of limit columns 33. The hydraulic cylinder 32 and the limit columns 33 are fixed to the top of the base 1. The bracket three 31 is slidably connected to the limit columns 33. The output end of the hydraulic cylinder 32 is fixedly connected to the bracket three 31. The hydraulic cylinder 32 is telescopically used to drive the bracket three 31 to rise and fall, thereby adjusting the height of the bending assembly above the bracket three 31. The limit columns 33 are used to limit the bracket three 31 to ensure the smooth lifting and lowering of the bracket three 31.

[0052] Further, such as Figure 3 and Figure 7As shown, the bending assembly includes a motor 2 34, a cylinder 1 37, two groups of connecting rods 1 39 and two groups of connecting rods 2 310. The top of the bracket 31 is fixedly connected to the slide rail 2 35. The motor 2 34 is fixed to the side of the slide rail 2 35 away from the bracket 1 21. The top of the slide rail 2 35 is slidably connected to the slider 2 36. The output end of the motor 2 34 and the slider 2 36 are connected by a screw drive. The cylinder 1 37 is fixed to the top of the slider 2 36. The motor 2 34 is used to drive the slider 2 36, and the slider 2 36 drives the cylinder 1 37 to move closer to or away from the side of the motor 2 34.

[0053] The output end of cylinder 1 37 is fixedly connected to a connecting piece 38, which is in the shape of a "cross". The two sides of the connecting piece 38 perpendicular to the setting direction of cylinder 1 37 are hinged to two groups of connecting rods 1 39 respectively, and the side of the connecting piece 38 away from cylinder 1 37 is hinged to two groups of connecting rods 2 310. The two groups of connecting rods 2 310 are respectively set on the upper and lower sides of the connecting piece 38, and the two groups of connecting rods 2 310 are respectively slidably connected to connecting rod 1 39.

[0054] A through slot 312 is provided on the second connecting rod 310, and a fastener 311 is provided inside the through slot 312. A mounting hole is provided on the first connecting rod 39, and the end of the fastener 311 is provided in the mounting hole. The fastener 311 can be a bolt or other fastener that can play a fastening role.

[0055] The clamp 313 is hinged to the end of the connecting rod 39 away from the connecting piece 38. The clamp 313 can be opened and closed and the inner diameter can be adjusted, so as to facilitate the placement of the protective tube and adapt to protective tubes of different diameters.

[0056] In actual operation, the extension and retraction of the hydraulic cylinder 32 can drive the bending assembly above the bracket three 31 to rise and fall. When the motor two 34 starts to rotate forward, it can drive the slider two 36 and the cylinder one 37 on the slider two 36 to move toward the side close to the motor two 34 through the screw transmission. On the contrary, when the motor two 34 starts to reverse, it drives the cylinder one 37 on the slider two 36 to move toward the side away from the slider one 24. When the fastener 311 is only used to limit the position of the connecting rod two 310 and does not completely fix the position of the connecting rod two 310 and the connecting rod one 39, that is, at this time, the angle between the two sets of connecting rods one 39 can be changed. The cylinder 1 37 is extended and retracted, driving the connecting piece 38 to move closer to or away from the slider 1 24, thereby achieving bending of the protective tube at a fixed angle; when the fastener 311 is used to limit the position of the connecting rod 2 310 and fix the positions of the connecting rod 2 310 and the connecting rod 1 39, that is, the angle between the two sets of connecting rods 1 39 is fixed, the cylinder 1 37 is extended and retracted, driving the connecting piece 38 to move closer to or away from the slider 1 24, thereby achieving bending of the protective tube at a variable angle; when bending the protective tube, the clamp 313 can be used to fix the protective tube, or the clamp 313 can be used alone to limit the position of the protective tube.

[0057] Specifically, such as Figure 1 、 Figure 8 and Figure 9 As shown, the reset mechanism 4 includes a movable component and a restoration component. The movable component is arranged on the top of the base 1, and the restoration component is arranged on the movable component. The movable component is used to adjust the position of the restoration component, and the restoration component is used to restore the protective tube.

[0058] Further, such as Figure 1 and Figure 8 As shown, the movable component includes a movable platform 41 and a motor three 42. The movable platform 41 is arranged on the top of the base 1. The bottom of the end of the movable platform 41 close to the bracket 21 is rotatably connected to the base 1. A number of universal wheels are provided at the bottom of the end of the movable platform 41 away from the bracket 21. A moving seat 410 is provided on the top of the movable platform 41. An arc-shaped rack 43 is fixedly connected to the side of the top of the base 1 away from the bracket 21. The motor three 42 is fixed to the top of the end of the movable platform 41 away from the bracket 21. The output end of the motor three 42 is connected to the arc-shaped rack 43 by gear meshing. The motor three 42 is used to drive the reset mechanism 4 to perform forward and reverse motion around the rotating connection with the base 1.

[0059] Further, such as Figure 8 and Figure 9 As shown, the restoration component includes a robot 44, a rotating shaft 45, a connecting shaft 46 and several fixed blocks 47. The robot 44 is fixed on the top of the moving seat 410. The end of the robot 44 is rotatably connected to the rotating shaft 45. The end of the rotating shaft 45 away from the robot 44 is rotatably connected to the connecting shaft 46. One group of the several fixed blocks 47 is fixed on the connecting shaft 46, and the remaining fixed blocks 47 are fixed on the rotating shaft 45. Several cylinders 48 are circumferentially arranged in the radial direction of the connecting shaft 46. The cylinder 48 is fixedly connected to the fixed block 47. The cylinder 48 is a double-output cylinder. The output end of the cylinder 48 is fixedly connected to the clamp seat 49. The connecting shaft 46 is used to adaptively adjust the angle between the fixed block 47 on the connecting shaft 46 and the fixed block 47 on the rotating shaft 45. The cylinder 48 is used to control the extension and retraction of the clamp seat 49 to adapt to cable protection tubes with different inner diameters, thereby achieving the effect of resetting protection tubes with different inner diameters.

[0060] In actual operation, according to actual needs, the control motor 3 42 starts forward rotation, and through the engagement of the gear and the arc rack 43, the movable platform 41 is driven to rotate clockwise around the rotating connection with the base 1. Conversely, the motor 3 42 starts reverse rotation, driving the movable platform 41 to rotate counterclockwise around the rotating connection with the base 1. The universal wheel is used to assist the rotation while providing support; the movable seat 410 is used to adjust the distance between the robot 44 and the bracket 1 21, so that the cylinder 2 48 and the clamp seat 49 on the rotating shaft 45 and the connecting shaft 46 can be inserted into the interior of the protective tube, and then according to the inner diameter of the protective tube, the cylinder 2 48 is controlled to extend and retract, so that the end of the clamp seat 49 can fit the inner wall of the protective tube, and at the same time, the rotating shaft 45 is controlled to rotate, and the radial restoration of the protective tube is achieved by radial expansion. The end of the rotating shaft 45 is provided with a connecting shaft 46 rotatably connected to the rotating shaft 45, which can adapt to the adjustment of the bending part, and thus can also achieve the restoration of the bending part.

[0061] It should be noted that the movable seat 410 can be driven by a motor and a rack and pinion to move along the setting direction of the movable platform 41 on the top of the movable platform 41; a driving device for driving the rotating shaft 45 to rotate is provided at the end of the robot 44, and the driving device can be a motor.

[0062] Testing methods for performance testing equipment of cable protection tubes:

[0063] Step 1: The staff adjusts the height of the lifting frame 217 and the second slide rail 35 , and uses tools to place the protective tube to be tested on the support plate 218 , with both ends of the protective tube set inside the fixture 313 .

[0064] Step 2: The staff marks the test points and test lines on the top of the protective tube according to the performance test requirements of the protective tube to be tested, and fixes the positions of the protective tube, the second connecting rod 310 and the first connecting rod 39.

[0065] Specifically, the staff uses a marking pen to set marking points or marking lines on the top of the protective tube as needed. At least three marking points are set, one of which is set at the top center of the support plate 218.

[0066] Before testing, the protective tube is placed on the support plate 218 and is clamped and limited by the stopper 212 on the slider 24 and the stopper 212 on the movable block 25. During testing, the motor 23 starts to reverse and releases the clamping of the protective tube. The following testing methods can be performed:

[0067] Detection method one: adjust motor two 34 to start so that the clamp 313 can clamp the protective tube at the set position of the protective tube. The fastener 311 is used to limit the position of connecting rod two 310, and at the same time limit the angle between connecting rod two 310 and connecting rod one 39. At this time, cylinder one 37 contracts, driving the two ends of the protective tube to move toward the side close to cylinder one 37. At this time, the block 212 on the top of motor two 34 acts as a fulcrum, and the pressure detection module obtains the pressure data detected by pressure sensor two 29 on slider one 24. At the same time, since the clamp 313 does not clamp the protective tube, the clamping position is fixed when bending. At this time, it can also play a stretching role when bending to a certain extent, which is suitable for bending the protective tube into a small angle.

[0068] Detection method two: the clamp 313 is used to limit the protective tube, and the fastener 311 is only used to limit the position of the connecting rod 2 310, and does not limit the angle between the connecting rod 2 310 and the connecting rod 1 39. At this time, the cylinder 1 37 contracts, driving the two ends of the protective tube to move toward the side close to the cylinder 1 37. At this time, the block 212 on the top of the motor 2 34 acts as a fulcrum, and the pressure detection module obtains the pressure data detected by the pressure sensor 2 29 on the slider 1 24. At the same time, since the clamp 313 is only used to limit the protective tube, when the cylinder 1 37 contracts, the connecting rod 1 39 hinged to the connecting piece 38 and the clamp 313 hinged to the connecting rod 1 39 will adapt to the position change when the cylinder 1 37 contracts, so that the connecting rod 1 39 gradually moves toward the two ends of the protective tube while bending the protective tube, thereby adjusting the effect of limiting the position of the protective tube, which is suitable for bending the protective tube into a large angle.

[0069] Before testing, the protective tube is placed on the support plate 218 and is clamped and limited by the stopper 212 on the slider 24 and the stopper 212 on the movable block 25. During testing, the protective tube is still clamped and the following testing methods can be performed:

[0070] Detection method three: the adjustment motor 2 34 is started so that the clamp 313 can clamp the protective tube at the set position of the protective tube, the fastener 311 is used to limit the position of the connecting rod 2 310, and at the same time limit the angle between the connecting rod 2 310 and the connecting rod 1 39, the hydraulic cylinder 32 is started to extend or retract to drive the bracket 3 31 to rise or fall, driving the two ends of the protective tube to rise or fall synchronously, so that the protective tube can be bent vertically. Preferably, the hydraulic cylinder 32 is started to retract to drive the two ends of the protective tube to fall. At this time, the top of the support plate 218 acts as a fulcrum, and the pressure detection module obtains the pressure data detected by the pressure sensor 1 on the support plate 218 on the slider 1 24 and the pressure data detected by the pressure sensor 2 29 on the top of the slider 1 24 and the pressure sensor 2 29 on the top of the movable block 25, and performs another bending in the direction perpendicular to the plane where the existing bending is located, thereby improving the accuracy of the protection tube performance detection;

[0071] Detection method four: The clamp 313 is used to limit the protective tube, control the motor 1 23 to start forward rotation, start the slider 1 24 to move closer to the side of the movable block 25, so that the slider 1 24 and the stop block 212 above the movable block 25 clamp the protective tube, thereby obtaining the deformation capacity of the protective tube when it is squeezed.

[0072] It should be noted that when the cylinder 1 37 contracts, the motor 2 34 can be used to start the reverse rotation to drive the cylinder 1 37 on the slider 2 36 to move away from the slider 1 24, further increasing the distance between the connecting piece 38 and the slider 1 24, thereby improving the bending effect; similarly, in the above-mentioned detection method, the protective tube can be bent in the opposite direction by extending the cylinder 1 37. The corresponding detection method 1 is still applicable to the case of bending the protective tube into a small angle, and the corresponding detection method 2 is still applicable to the case of bending the protective tube into a large angle. At the same time, the motor 2 34 is controlled to start the forward rotation to drive the cylinder 1 37 on the slider 2 36 to move toward the side close to the slider 1 24, further The spacing between the cylinder 1 37 and the slider 1 24 is gradually reduced; the extension and retraction of the hydraulic cylinder 32 can be applied to sudden external pressure, while the start-up of the motor 2 34 can use continuous external pressure. At this time, the pressure detection module obtains the pressure data detected by the pressure sensor 2 29 above the movable block 25; in actual application, including but not limited to the specific detection methods described above, the clamp 313 can also be used to clamp or limit the protective tube, the extension and retraction of the cylinder 1 37, the forward and reverse rotation of the motor 2 34, the extension and retraction of the hydraulic cylinder 32, the clamping or limiting of the protective tube by the slider 1 24 and the movable block 25, etc., to achieve various performance detection methods and expand the scope of application of the performance detection.

[0073] Step 3: During the bending process, the visual recognition module and the pressure detection module obtain relevant data and judge the performance test results of the protective tube based on the obtained data.

[0074] Specifically, the visual inspection module continuously acquires the image captured by the camera 221 and identifies the center line and the position of the marking point on the top of the protective tube, thereby obtaining the deformation path of the protective tube when it is bent. At the same time, it can also identify the spacing between adjacent marking points or the length of the marking line. The spacing between adjacent marking points is recorded as l, the length of the marking line is recorded as l', and the minimum diameter is recorded as d.

[0075] The visual inspection module identifies the initial spacing between adjacent marking points or the length of the marking line and the minimum diameter of the protective tube before bending. The initial spacing between adjacent marking points is recorded as L, i∈(1, k-1), k is the number of marking points, the initial length of the marking line is recorded as L', and the initial minimum diameter is D;

[0076] The visual inspection module is provided with an extension coefficient for the spacing between adjacent marking points after bending and an extension coefficient for the marking line. The extension coefficient for the spacing between marking points is recorded as n, and the extension coefficient for the marking line is recorded as m. Both n and m are coefficients greater than 1.

[0077] The pressure detection module obtains the pressure data detected by the two sets of pressure sensors 29 and pressure sensor 1 during bending. The pressure data detected by the pressure sensor 2 29 above the slider 1 24 is recorded as f1, the pressure data detected by the pressure sensor 2 29 above the movable block 25 is recorded as f2, and the pressure data detected by the pressure sensor 1 is recorded as f3;

[0078] The pressure detection module is provided with the maximum anti-bending pressure value during bending and the range of the clamping force. The maximum anti-bending pressure value is recorded as F, and the range of the clamping force is recorded as the clamping force range that can clamp the protective tube without causing the protective tube to deform. The clamping force range is recorded as (F1, F2), where F1 is the minimum force allowed to clamp the tube, and F2 is the maximum force allowed to clamp the tube without causing deformation.

[0079] In the first detection method and the second detection method, if f1, f2 ≥ F and l∈ (L, nL), the protective tube has good deformation resistance and a certain rigidity; if f1, f2 ≥ F, l ≥ nL, the protective tube has good deformation resistance and good toughness; if f1, f2 < F, the protective tube has poor deformation resistance and may bend and break.

[0080] In detection method three, the control motor 23 is started, so that when f1 and f2∈(F1, F2) are detected, the minimum diameter detection and judgment is not performed; if f1 and f2∈(F2, 2F2) are detected, the minimum diameter detection and judgment is performed, if d=D, the protection tube has a strong ability to resist extrusion deformation, and if d<D, the protection tube has a poor ability to resist extrusion deformation; the pressure data judgment method detected by the support plate 218 is the same as the judgment method in detection method and detection method two, if f3≥F and l∈(L, nL), the protection tube has good deformation resistance and certain rigidity; if f3≥F, l≥nL, the protection tube has good deformation resistance and good toughness; if f3<F, the protection tube has poor deformation resistance, and at this time, bending and breaking may occur, or the deformation part absorbs part of the tension or pressure given by the clamp 313 when the cylinder 37 is extended and contracted.

[0081] Step 4: Control the resetting mechanism 4 to restore the protective tube after bending and inspection, and re-perform visual inspection.

[0082] Specifically, the reset mechanism 4 is controlled to restore the protective tube after bending and testing, and then step 2 is repeated to verify its fatigue resistance and recovery ability. According to actual needs, after completing the above-mentioned tests, the accuracy of the obtained test results can be further ensured by repeating steps 2 and 3 on the same protective tube to add tests.

[0083] Step 5: After the inspection is completed, the staff will use tools to remove the protective tube.

[0084] The above method can realize the bending performance test of the cable protection tube, and can also restore the cable protection tube after the test and re-test it, so as to obtain the anti-deformation and recovery ability test of the cable protection tube, thereby improving the diversity and accuracy of the performance test of the cable protection tube.

[0085] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0086] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or substitute equivalents for some of the technical features. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A performance testing device for a cable protection tube, comprising a base (1), a support mechanism (2), a bending mechanism (3) and two sets of reset mechanisms (4), characterized in that: The support mechanism (2), the bending mechanism (3) and the two sets of reset mechanisms (4) are all arranged on the top of the base (1); the bending mechanism (3) is arranged on the front side of the support mechanism (2); and the two sets of reset mechanisms (4) are arranged on the left and right sides of the support mechanism (2); The support mechanism (2) comprises a support component, a pressure detection component and a visual detection component, the support component is arranged on the base (1), and the pressure detection component and the visual detection component are both arranged on the support component; The support assembly includes a bracket (21), a slider (24), a movable block (25) and a support plate (218). A pressure sensor (1) is provided on the top of the support plate (218). The pressure sensor (1) is electrically connected to a pressure detection module. The pressure detection module is used to detect the pressure when the protective tube is bent and make a judgment based on the obtained pressure data. The pressure detection assembly includes two groups of detection frames (28), a pressure sensor (29) and a stop block (212). The visual detection assembly includes a bracket (220) and a camera (221). The camera (221) is electrically connected to a visual recognition module. The visual recognition module is used to obtain the image captured by the camera (221) and identify the deformation of the protective tube. The two groups of detection frames (28) are respectively arranged on the top of the slider (24) and the movable block (25), the pressure sensor (29) is fixed inside the detection frame (28), the side of the pressure sensor (29) is fixedly connected with a rubber pad (210), and the pressure sensor (29) is electrically connected to the pressure detection module; The detection frame (28) is provided with a second slide groove (213) on both upper and lower sides. The detection frame (28) is slidably connected to a movable frame (211). The stop block (212) is arranged inside the movable frame (211). The stop block (212) is rotatably connected to the movable frame (211). Both ends of the stop block (212) are arranged in the second slide groove (213). The stop block (212) is slidably connected to the detection frame (28). The bending mechanism (3) comprises a support frame, a bending assembly, and two sets of clamps (313); the support frame is arranged on the base (1); the bending assembly is arranged on the support assembly; and the two sets of clamps (313) are arranged on the support frame; The support frame includes a third support frame (31), a hydraulic cylinder (32) and four groups of limiting columns (33). The bending assembly includes a second motor (34), a first cylinder (37), two groups of first connecting rods (39) and two groups of second connecting rods (310), the top of the third bracket (31) is fixedly connected to a second slide rail (35), the second motor (34) is fixed to the side of the second slide rail (35) away from the first bracket (21), the top of the second slide rail (35) is slidably connected to a second slider (36), the output end of the second motor (34) and the second slider (36) are connected by a screw drive, and the first cylinder (37) is fixed to the top of the second slider (36); The output end of the cylinder 1 (37) is fixedly connected with a connecting piece (38), and the two sides of the connecting piece (38) perpendicular to the setting direction of the cylinder 1 (37) are respectively hinged with two groups of connecting rods 1 (39), and the side of the connecting piece (38) away from the cylinder 1 (37) is hinged with two groups of connecting rods 2 (310), and the two groups of connecting rods 2 (310) are respectively set on the upper and lower sides of the connecting piece (38), and the two groups of connecting rods 2 (310) are respectively slidably connected with the connecting rod 1 (39); The second connecting rod (310) is provided with a through slot (312), a fastener (311) is provided inside the through slot (312), and the first connecting rod (39) is provided with a mounting hole, an end of the fastener (311) is provided in the mounting hole; The clamp (313) is hinged to the end of the connecting rod (39) away from the connecting member (38); The resetting mechanism (4) comprises a movable component and a restoration component, wherein the movable component is arranged on the top of the base (1), and the restoration component is arranged on the movable component.

2. The performance testing device for a cable protection tube according to claim 1, characterized in that: The bracket (21) is fixed to the top of the base (1), the top of the bracket (21) is fixedly connected to a slide rail (22), the side of the bracket (21) close to the bending mechanism (3) is fixedly connected to a motor (23), the slider (24) and the movable block (25) are arranged inside the slide rail (22), the slider (24) is slidably connected to the slide rail (22), the movable block (25) is arranged inside the slide rail (22), and the slider (24) is connected to the output end of the motor (23) by a screw drive; The top of the slide rail (22) is provided with a plurality of fasteners (27), and the bottom of the movable block (25) is provided with limiting holes (27) on both sides perpendicular to the setting direction of the slide rail (22), and the limiting holes (27) are provided in the limiting holes.

3. The performance testing device for a cable protection tube according to claim 2, characterized in that: The slider (24) and the movable block (25) are slidably connected to a sliding column (214) at the same height, and the two groups of sliding columns (214) are slidably connected to a connecting column (215) at one end close to each other. A spring (216) is sleeved on the sliding column (214), and the two ends of the spring (216) are fixedly connected to the connecting column (215) and the sliding column (214) respectively. A lifting frame (217) is sleeved on the connecting column (215), and the support plate (218) is rotatably connected to the top of the lifting frame (217). The lifting frame (217) is provided with a sliding groove (1) on both sides perpendicular to the setting direction of the connecting column (215), and a fastener (219) is provided in the sliding groove (1).

4. The performance testing device for a cable protection tube according to claim 3, characterized in that: The second bracket (220) is fixed to a side of the first slider (24) close to the bending mechanism (3), and the camera (221) is fixed to the bottom of the second bracket (220).

5. The performance testing device for a cable protection tube according to claim 4, characterized in that: The hydraulic cylinder (32) and the limiting column (33) are fixed to the top of the base (1), the bracket three (31) is slidably connected to the limiting column (33), and the output end of the hydraulic cylinder (32) is fixedly connected to the bracket three (31).

6. The performance testing device for a cable protection tube according to claim 5, characterized in that: The movable assembly includes a movable platform (41) and a motor three (42). The movable platform (41) is arranged on the top of the base (1). The bottom of the end of the movable platform (41) close to the bracket one (21) is rotatably connected to the base (1). The bottom of the end of the movable platform (41) away from the bracket one (21) is provided with a plurality of universal wheels. The top of the movable platform (41) is provided with a moving seat (410). The side of the top of the base (1) away from the bracket one (21) is fixedly connected with an arc-shaped rack (43). The motor three (42) is fixed to the top of the end of the movable platform (41) away from the bracket one (21). The output end of the motor three (42) is connected to the arc-shaped rack (43) by gear meshing.

7. The performance testing device for a cable protection tube according to claim 6, characterized in that: The restoration component includes a robot (44), a rotating shaft (45), a connecting shaft (46) and a plurality of fixed blocks (47). The robot (44) is fixed on the top of the movable seat (410). The end of the robot (44) is rotatably connected to the rotating shaft (45). The end of the rotating shaft (45) away from the robot (44) is rotatably connected to the connecting shaft (46). The plurality of fixed blocks (47) are respectively fixed on the connecting shaft (46) and the rotating shaft (45). A plurality of cylinders (48) are circumferentially arranged in the radial direction of the connecting shaft (46). The cylinders (48) are fixedly connected to the fixed blocks (47). The output end of the cylinders (48) is fixedly connected to a clamping seat (49).

8. The performance testing device for a cable protection tube according to claim 7, characterized in that: Testing method of the performance testing equipment of the cable protection tube: Step 1: The staff adjusts the height of the lifting frame (217) and the second slide rail (35), and uses a tool to place the protective tube to be tested on the support plate (218), with both ends of the protective tube set inside the fixture (313); Step 2: The staff marks the test points or test lines on the top of the protective tube according to the performance test requirements of the protective tube to be tested, and fixes the positions of the protective tube, the second connecting rod (310) and the first connecting rod (39); Step 3: During the bending process, the visual recognition module and the pressure detection module obtain relevant data and judge the performance test results of the protective tube based on the obtained data; Step 4: Control the reset mechanism (4) to restore the protective tube after bending and inspection, and re-perform visual inspection; Step 5: After the inspection is completed, the staff will use tools to remove the protective tube.

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