Cable protection pipe roller pressing type multi-parameter detection equipment

Abstract

The present application relates to cable protection pipe detection technical field, especially a kind of cable protection pipe roller pressure type multi-parameter detection equipment, including bearing main body, bearing main body includes multiple along Y direction and side by side arrangement sub-bearing mechanism;Two sliding guide mechanisms are slidably arranged in each sub-bearing mechanism;Upper pressure drive roller mechanism and lower supporting roller mechanism are slidably connected with sliding guide mechanism, located on the upper and lower sides of protection pipe, cooperate to complete outer diameter, roundness and straightness detection;Lifting drive mechanism is set on horizontal drive mechanism, drives upper pressure drive roller mechanism to lift to detect radial stiffness, and drives protection pipe to move along X direction sequentially to first position to fourth position;Limiting thrust mechanism realizes the positioning of protection pipe Y direction;Circulating thermalization mechanism realizes protection pipe heating softening and cooperates straightening;Size detection mechanism detects wall thickness and length;Visual acquisition mechanism carries out appearance detection.The present application realizes multi-parameter integrated detection and integrates straightening function, and detection efficiency is high.

Description

Technical Field

[0001] This invention relates to the field of cable protection pipe testing technology, and in particular to a multi-parameter testing device for cable protection pipes using a roller pressing method. Background Technology

[0002] Cable protection pipes, as key sheathing materials in power cable laying projects, are widely made of thermoplastic plastics such as modified polypropylene (MPP). They possess advantages such as good insulation performance, corrosion resistance, and high mechanical strength, and are commonly used in trenchless construction and direct burial applications. The manufacturing quality of cable protection pipes directly affects the operational safety of power cables and the long-term reliability of the laying project. Before leaving the factory, multiple parameters, including outer diameter, roundness, straightness, radial stiffness, wall thickness, length, and appearance quality, must be tested to ensure that the products meet relevant standards. Among these, radial stiffness is an important mechanical indicator characterizing the pipe's resistance to external pressure deformation.

[0003] Currently, the inspection of cable protection pipes mostly relies on manual measuring tools or single-function testing equipment. When using manual inspection, tools such as calipers, flat gauges, and feeler gauges are required to measure parameters such as outer diameter, wall thickness, and straightness one by one. This method is inefficient, labor-intensive, and the measurement accuracy is affected by the operator's experience, making it difficult to meet the needs of full inspection of each pipe under mass production conditions.

[0004] With the development of automated testing technology, some automatic testing devices for cable protection pipes have emerged in the existing technology. For example, Chinese patent application CN121677583A discloses a dimensional testing device for cable protection pipes, which uses a support roller to support the pipe, a photoelectric sensor to detect the outer diameter of the pipe, and an inner diameter testing mechanism to detect the inner diameter of the pipe. Chinese patent application CN122192164A discloses an online laser diameter and thickness measuring device for extruded cable pipes, which measures the outer diameter and wall thickness of the pipe through measuring mechanisms set on both the inner and outer sides of the cable pipe. However, the above-mentioned existing testing devices can only test a single or a few dimensional parameters of the pipe, and cannot simultaneously cover the testing of mechanical performance parameters such as radial stiffness. Therefore, for cable protection pipes that need to be tested for both dimensional and mechanical performance parameters, the existing testing methods often require multiple devices and multiple processes to complete the test step by step. This results in large equipment investment, large floor space, slow testing cycle, and the pipe is prone to secondary damage during multiple transfers.

[0005] In addition, if the roundness or straightness of the cable protection pipe is found to be non-compliant during inspection, it usually needs to be transferred to a special straightening device for heat straightening. The inspection process and the straightening process are independent of each other, which further increases the complexity and time cost of the production process.

[0006] In summary, the existing technology lacks an integrated testing device that can perform online integrated testing of multiple parameters such as the outer diameter, roundness, straightness, radial stiffness, wall thickness, length and appearance of cable protection pipes, and can perform on-site straightening of unqualified pipe fittings. Summary of the Invention

[0007] The present invention aims to solve the above-mentioned defects and provide a multi-parameter testing device for cable protection pipes by roller pressing.

[0008] To overcome the deficiencies in the prior art, the technical solution adopted by the present invention to solve its technical problem is: a multi-parameter testing device for cable protection pipes by roller pressing, comprising:

[0009] The main body of the load-bearing structure includes multiple sub-load-bearing mechanisms; the sub-load-bearing mechanisms are arranged side by side along the Y direction, so that the cable protection pipe can be transported into the main body along the Y direction and carried in sections by each sub-load-bearing mechanism; each sub-load-bearing mechanism is slidably provided with two sliding guide mechanisms that can move freely along the X direction;

[0010] The upper pressure drive roller mechanism is respectively disposed in each of the said sub-bearing mechanisms and is slidably connected to the sliding guide mechanism in the corresponding sub-bearing mechanism, so that the upper pressure drive roller mechanism can move within a preset stroke in the Z direction;

[0011] The lower support roller mechanism is respectively disposed in each of the aforementioned sub-bearing mechanisms and is slidably connected to the sliding guide mechanism so that the lower support roller mechanism can move within a preset stroke in the Z direction; it is located directly below the upper pressure drive roller mechanism, and it cooperates with the upper pressure drive roller mechanism to complete the outer diameter detection, roundness detection and straightness detection of the protective tube;

[0012] A horizontal drive mechanism is respectively installed in each of the aforementioned sub-support mechanisms, and a lifting drive mechanism is installed on it to drive the lifting drive mechanism to move along the X direction; the output end of the lifting drive mechanism is connected to the upper pressure drive roller mechanism, thereby driving the upper pressure drive roller mechanism to move up and down along the Z direction, and thus detecting the radial stiffness of the protective tube; when the horizontal drive mechanism drives the lifting drive mechanism to move, it simultaneously drives the upper pressure drive roller mechanism, the lower support roller mechanism and the sliding guide mechanism to move together along the X direction, and the protective tube moves to the first position, the second position, the third position and the fourth position in sequence;

[0013] A limiting thrust mechanism is provided on the bearing body to push the protective tube, which is placed in the first position, to a preset position to achieve Y-axis positioning of the protective tube;

[0014] A circulating heating mechanism is provided on the supporting body and is used to introduce circulating hot air into the protective tube located in the second position, and to straighten the protective tube by means of the upper pressure drive roller mechanism and the lower support roller mechanism.

[0015] A size detection mechanism is installed on the supporting body and is used to detect the wall thickness and length of the protective tube placed in the third position;

[0016] Multiple visual acquisition mechanisms are provided, all of which are installed on the supporting body, for visual inspection of the overall appearance of the protective tube located in the fourth position.

[0017] In a further improvement, each sliding guide mechanism includes four movable sliders, with a guide rod connecting every two movable sliders; the movable sliders are slidably mounted on the sub-bearing mechanism and can move freely along the X direction; the guide rod is vertically mounted, and the upper pressure drive roller mechanism and the lower support roller mechanism are slidably connected to the guide rod respectively.

[0018] In a further improvement, the sub-supporting mechanism includes two parallel plates, with multiple support rods connecting the two parallel plates, and guide windows are provided on the two parallel plates opposite each other; the upper pressure drive roller mechanism, the lower support roller mechanism, and the horizontal drive mechanism are all arranged between the two parallel plates, and the sliding guide mechanism is slidably disposed in the guide window.

[0019] In a further improvement, the lower support roller mechanism includes a lower receiving box, within which two lower rollers are arranged in parallel rolling motion.

[0020] In a further improvement, the upper pressure drive roller mechanism includes an upper receiving box, a main plate, and a roller drive unit;

[0021] Two upper rollers are arranged in parallel rolling within the upper receiving box. The roller driving unit is disposed on the upper receiving box and is used to drive the upper rollers to rotate.

[0022] At least two connecting guide plates are vertically arranged at the lower end of the main body plate. The connecting guide plates pass downward through the upper receiving box and slide with the upper receiving box, so that the upper receiving box can float relative to the main body plate in the Z direction. A rotating shaft is rotatably arranged between each of the connecting guide plates. A pressure roller is sleeved on the rotating shaft. The pressure roller is located in the upper receiving box and corresponds to the roller gap between the two upper rollers.

[0023] The upper end of the main body plate is connected to at least four guide T-shaped posts and a force detection unit. The guide T-shaped posts are all inserted through the movable plate, allowing the movable plate to slide along the length of the guide T-shaped posts. The movable plate is connected to the output end of the lifting drive mechanism. An outer diameter distance sensor is provided on the main body plate to detect the distance between the main body plate and the upper housing. A pressure elastic element is also provided at the lower end of the main body plate.

[0024] In a further improvement, the limiting thrust mechanism includes a thrust bearing bracket and a thrust cylinder, wherein the thrust cylinder is mounted on the thrust bearing bracket and the output end of the thrust cylinder is connected to the push plate.

[0025] In a further improvement, the circulating heating mechanism includes two connecting support frames and a hot gas generator, one of which is installed on the first sub-support mechanism and the other is installed on the last sub-support mechanism; a pipe is connected between the two connecting support frames, and a hot gas generator is connected in series on the pipe.

[0026] In a further improvement, the size detection mechanism includes two unidirectional detection units, one of which is located on the first of the sub-supporting mechanisms and the other is located on the last of the sub-supporting mechanisms; the two unidirectional detection units respectively detect the thickness of the pipe walls at both ends of the protective pipe, and cooperate to detect the total length of the protective pipe.

[0027] Further improvements include a unidirectional detection unit comprising a mounting support bracket and a detection support plate. At least two feed cylinders and a fixed cylinder are mounted on the detection support plate. The output ends of the feed cylinders are connected to the mounting support bracket to drive the detection support plate and the fixed cylinder to move together. A measuring disc and a compression spring are fitted onto the fixed cylinder. The compression spring pushes the measuring disc to move towards the front end of the fixed cylinder, and the measuring disc moves within a preset stroke on the fixed cylinder. A rotating cylinder is rotatably mounted inside the fixed cylinder. An inner diameter distance sensor is radially mounted on the section of the rotating cylinder extending outside the fixed cylinder to detect the inner diameter of the protective tube. A rotation drive unit is provided at the end of the fixed cylinder, and the output end of the rotation drive unit is coaxially connected to the rotating cylinder to drive the rotating cylinder to rotate. A length distance sensor is mounted on the mounting support bracket to detect the displacement of the measuring disc.

[0028] In a further improvement, the supporting body is provided with multiple tube conveying mechanisms for automatically inputting the protective tube into the supporting body and automatically outputting the protective tube in the fourth position from the supporting body.

[0029] In a further improvement, the tube conveying mechanism includes a fixed frame and a movable frame. At least two rods are disposed through the fixed frame, with one end of each rod connected to a limiting block and the other end connected to the movable frame. A lifting drive unit is disposed on the fixed frame, and the output end of the lifting drive unit is connected to the movable frame for driving the movable frame to move along the Z direction. A support spring is sleeved on each rod, with one end of the support spring abutting against the movable frame and the other end abutting against the fixed frame.

[0030] A roller is rotatably mounted on the movable frame. Two conveyor motors are mounted on the movable frame. The output ends of the conveyor motors are connected to small pulleys. Conveyor belts are synchronously mounted on the small pulleys and the rollers to drive the small pulleys and the rollers to rotate synchronously. The rollers are provided with annular conical grooves in the circumference.

[0031] The beneficial effects of this invention are as follows: This design uses multiple sub-supporting mechanisms arranged side by side along the Y-direction on the main body to form a multi-station testing platform. Each sub-supporting mechanism carries the protective tube in sections, and the upper pressure drive roller mechanism, the lower support roller mechanism, and the sliding guide mechanism move together along the X-direction through a horizontal drive mechanism, sequentially moving the protective tube to the first position, the second position, the third position, and the fourth position. At the corresponding station, Y-direction positioning, thermal straightening, wall thickness and length detection, and appearance inspection are completed. Under the drive of the lifting drive mechanism, the upper pressure drive roller mechanism and the lower support roller mechanism cooperate to complete the detection of the outer diameter, roundness, straightness, and radial stiffness of the protective tube. The protective tube can complete the continuous detection of multiple parameters on one machine, without the need for step-by-step transfer between multiple machines, significantly shortening the testing cycle, reducing equipment investment and floor space, and avoiding secondary damage to the pipe during multiple transfers. Attached Figure Description

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0033] Figure 1 This is the front view of the present invention;

[0034] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of AA;

[0035] Figure 3 This is a cross-sectional structural diagram of the sectional bearing mechanism in this invention;

[0036] Figure 4 This is a schematic diagram of the main structure of the tube conveying mechanism in this invention;

[0037] Figure 5 This is a top view of the limiting thrust mechanism in this invention.

[0038] Figure 6 This is a side cross-sectional view of the unidirectional detection unit in this invention;

[0039] 000 in the diagram - the main load-bearing component;

[0040] 1-Distributed bearing mechanism, 2-Upper pressure drive roller mechanism, 3-Sliding guide mechanism, 4-Limiting thrust mechanism, 5-Lower support roller mechanism, 6-Pipe conveying mechanism, 7-Circulating heating mechanism, 8-Dimension detection mechanism, 9-Vision acquisition mechanism, 10-Horizontal drive mechanism, 11-Lifting drive mechanism;

[0041] 101-Parallel plate, 102-Bracket connecting rod, 103-Guide window;

[0042] 201-Upper housing, 202-Roller drive unit, 203-Main plate, 204-Moving plate, 205-Force detection unit, 206-Guide T-shaped column, 207-Outer diameter distance sensor, 208-Connecting guide plate, 209-Rotating shaft, 210-Pressure roller, 211-Upper roller body, 212-Pressure elastic element;

[0043] 301 - Guide rod, 302 - Moving slider;

[0044] 401-Thrust cylinder, 402-Thrust bearing bracket, 403-Push plate;

[0045] 501 - Lower roller body, 502 - Lower receiving box body;

[0046] 601-Belt roller, 602-Annular conical groove, 603-Small pulley, 604-Rod body, 605-Lifting drive unit, 606-Limiting block, 607-Fixed frame, 608-Support spring, 609-Conveyor motor, 610-Conveyor belt, 611-Moving frame;

[0047] 701 - Connecting support frame; 702 - Hot gas generator;

[0048] 801 - Unidirectional Detection Unit;

[0049] 8011-Fixed cylinder, 8012-Measuring circular plate, 8013-Compression spring, 8014-Detection bearing plate, 8015-Feed cylinder, 8016-Inner diameter distance sensor, 8017-Length distance sensor, 8018-Mounting bearing bracket, 8019-Rotating cylinder, 80110-Rotating drive unit. Detailed Implementation

[0050] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0051] See Figure 1 , Figure 2 and Figure 3 A multi-parameter testing device for cable protection pipes by roller pressing, comprising:

[0052] The main body 000 includes multiple sub-supporting mechanisms 1, which serve as the main frame of the equipment. The sub-supporting mechanisms 1 are arranged side by side along the Y direction, so that the cable protection pipe can be transported into the main body 000 along the Y direction and carried in sections by each sub-supporting mechanism. Each sub-supporting mechanism 1 is slidably provided with two sliding guide mechanisms 3 that can move freely along the X direction.

[0053] The upper pressure drive roller mechanism 2 is respectively disposed in each of the sub-supporting mechanisms 1 and is slidably connected to the sliding guide mechanism 3 in the corresponding sub-supporting mechanism 1 so that the upper pressure drive roller mechanism 2 can move within a preset stroke in the Z direction. The sliding guide mechanism 3 is used to vertically guide the upper pressure drive roller mechanism 2.

[0054] The lower roller mechanism 5 is respectively disposed in each of the said sub-bearing mechanisms 1 and is slidably connected to the sliding guide mechanism 3 so that the lower roller mechanism 5 can move within a preset stroke in the Z direction and is used to vertically guide the lower roller mechanism 5; it is located directly below the upper pressure drive roller mechanism 2 and is used to carry the protective tube, and cooperates with the upper pressure drive roller mechanism 2 to complete the outer diameter detection, roundness detection and straightness detection of the protective tube;

[0055] A horizontal drive mechanism 10 is respectively disposed in each of the aforementioned sub-supporting mechanisms 1, and a lifting drive mechanism 11 is disposed thereon for driving the lifting drive mechanism 11 to move along the X direction; the output end of the lifting drive mechanism 11 is connected to the upper pressure drive roller mechanism 2, thereby driving the upper pressure drive roller mechanism 2 to move up and down along the Z direction, applying vertical downward pressure to the protective tube, and thus detecting the radial stiffness of the protective tube; when the horizontal drive mechanism 10 drives the lifting drive mechanism 11 to move, it simultaneously drives the upper pressure drive roller mechanism 2, the lower support roller mechanism 5 and the sliding guide mechanism 3 to move together along the X direction, and the protective tube moves sequentially to the first position, the second position, the third position and the fourth position, thereby performing other tests;

[0056] The limiting thrust mechanism 4 is disposed on the bearing body 000 and is used to push the protective tube placed in the first position to the preset position to realize the Y-direction positioning of the protective tube;

[0057] The circulating heating mechanism 7 is installed on the supporting body 000 and is used to introduce circulating hot air into the protective tube located in the second position to heat and soften the inside of the protective tube so as to straighten the protective tube through the cooperation of the upper pressure drive roller mechanism 2 and the lower support roller mechanism 5.

[0058] The dimension detection mechanism 8 is set on the supporting body 000 and is used to detect the wall thickness and length of the protective tube placed in the third position.

[0059] Multiple visual acquisition mechanisms 9 are provided and are all located on the supporting body 000, and are used to visually inspect the overall appearance of the protective tube located in the fourth position.

[0060] The horizontal drive mechanism 10 drives the lifting drive mechanism 11, the upper pressure drive roller mechanism 2 and the lower support roller mechanism 5 to move the protective tube sequentially to the first position, the second position, the third position and the fourth position along the X direction, and perform Y-direction positioning, thermal straightening, length and wall thickness detection and appearance inspection in sequence.

[0061] Specifically, the protective tube is fed into the bearing body 000 and is supported by the lower support roller mechanism 5. The horizontal drive mechanism 10 drives the upper pressure drive roller mechanism 2, the lower support roller mechanism 5 and the protective tube to move sequentially along the X direction to the first position (Y-direction positioning station), the second position (heat straightening station), the third position (wall thickness / length detection station) and the fourth position (appearance inspection station). After all the inspections are completed, the protective tube is output from the bearing body 000. The upper pressure drive roller mechanism 2 and the lower support roller mechanism 5 cooperate to realize the detection of outer diameter / roundness / straightness, and the lifting drive mechanism 11 assists the upper pressure drive roller mechanism 2 to realize the detection of radial stiffness.

[0062] In a specific embodiment, the horizontal drive mechanism 10 adopts a screw drive method (such as a servo motor driving a ball screw). The screw drive drives the lifting drive mechanism 11 to move precisely along the X direction, thereby driving the upper pressure drive roller mechanism 2, the lower support roller mechanism 5, and the protective tube to move along the X direction to each detection station to realize various detection functions.

[0063] For specific embodiments, see Figure 1 and Figure 3 Each sliding guide mechanism 3 includes four movable sliders 302, and a guide rod 301 is connected between every two movable sliders 302 to form two sets of guide units. The movable sliders 302 are slidably mounted on the sub-bearing mechanism 1 and can move freely along the X direction. The guide rod 301 is vertically mounted, and the upper pressure drive roller mechanism 2 and the lower support roller mechanism 5 are slidably connected to the guide rod 301 to guide them vertically, so as to realize the stable movement of the upper pressure drive roller mechanism 2 and the lower support roller mechanism 5 along the Z direction, and move synchronously with the sliding guide mechanism 3 along the X direction. The two sliding guide mechanisms 3 will simultaneously guide the upper pressure drive roller mechanism 2 and the lower support roller mechanism 5.

[0064] For specific embodiments, see Figure 1The sub-supporting mechanism 1 includes two parallel plates 101, with multiple support rods 102 connecting the two parallel plates 101. Guide windows 103 are opened opposite each other on the two parallel plates 101. The upper pressure drive roller mechanism 2, the lower support roller mechanism 5, and the horizontal drive mechanism 10 are all arranged between the two parallel plates 101. The sliding guide mechanism 3 is slidably disposed in the guide window 103 and bears the weight of each component through the parallel plates 101. The guide window 103 is opened through along the Y direction, which allows the sliding guide mechanism 3 to slide along the X direction and the protective tube to pass through along the Y direction.

[0065] The limiting thrust mechanism 4 is set on the parallel plate 101 of the first sub-sub ...

[0066] For specific embodiments, see Figure 3 The lower support roller mechanism 5 includes a lower receiving box 502, in which two lower rollers 501 are arranged in parallel rolling. The protective tube is placed in the gap between the two lower rollers 501, with the axis of the protective tube parallel to the axis of the lower rollers 501. The two lower rollers 501 support the protective tube. In this way, the protective tube can be automatically positioned between the two rollers.

[0067] For specific embodiments, see Figure 3 The upper pressure drive roller mechanism 2 includes an upper housing 201, a main body plate 203, and a roller drive unit 202;

[0068] Two upper rollers 211 are arranged in parallel rolling inside the upper housing 201. The two upper rollers 211 are pressed against the surface of the protective tube in parallel. Together with the lower roller 501, the upper rollers 211, the protective tube and the lower roller 501 can rotate together. Under the drive of the lifting drive mechanism 11, the upper rollers 211 can also press down on the protective tube, forcing the protective tube to deform, thereby performing radial stiffness detection. The roller drive unit 202 is arranged on the upper housing 201 and is used to drive the upper rollers 211 to rotate, thereby driving the protective tube and the lower roller 501 to rotate synchronously through friction.

[0069] At least two connecting guide plates 208 are vertically arranged at the lower end of the main body plate 203. The connecting guide plates 208 are inserted downward into the upper receiving box 201, and the connecting guide plates 208 and the upper receiving box 201 are slidably engaged, so that the upper receiving box 201 can float relative to the main body plate 203 in the Z direction. A rotating shaft 209 is rotatably arranged between each of the connecting guide plates 208. A pressure roller 210 is sleeved on the rotating shaft 209. The pressure roller 210 is located in the upper receiving box 201 and corresponds to the roller gap between the two upper rollers 211. It is used to wedge into the roller gap and simultaneously press the two upper rollers 211 to perform radial stiffness detection. Furthermore, the pressure roller 210 and the two upper rollers 211 can rotate synchronously through friction, so that when the protective tube is heated and straightened, the pressure of the pressure roller 210 and the rotation of the upper rollers 211 are synchronized.

[0070] At least four guide T-shaped posts 206 and a force detection unit 205 are connected to the upper end of the main plate 203. The guide T-shaped posts 206 are all inserted through the movable plate 204, so that the movable plate 204 can slide along the length direction (Z direction) of the guide T-shaped posts 206. The movable plate 204 is connected to the output end of the lifting drive mechanism 11. An outer diameter distance sensor 207 is provided on the main plate 203 for detecting the distance between the main plate 203 and the upper receiving box 201.

[0071] The lower end of the main plate 203 is also provided with a pressure elastic element 212; when the main plate 203 moves downward to the preset position, the pressure elastic element 212 contacts the upper receiving box 201, the pressure elastic element 212 is compressed, and elastic pressure is applied to the upper receiving box 201; the pressure elastic element 212 provides pre-pressure for the upper roller 211 to adhere to the protective tube, and allows the upper receiving box 201 to float and undulate with the surface of the protective tube within the elastic stroke during the detection process, so as to avoid the rigid pressure causing pressure damage, scratches or impact damage to the MPP protective tube.

[0072] (1) Lowering and positioning and outer diameter detection: After the protective tube is positioned on the lower support roller mechanism 5, the lifting drive mechanism 11 drives the moving plate 204 to move downward. At this time, the upper roller 211 has not yet contacted the protective tube, so it will drive the main plate 203 and the upper receiving box 201 to move down to the preset position. When the upper roller 211 contacts the upper surface of the protective tube, the upper pressure drive roller mechanism 2 makes the upper roller 211 fit the protective tube under its own weight. The outer diameter measuring sensor 207 in each section bearing mechanism 1 detects the distance between the main plate 203 and the upper receiving box 201, reflecting the height position of the upper surface of different areas of the protective tube. Combined with the fixed reference of the lower roller 501, the outer diameter of different areas of the protective tube is calculated to determine whether there is an outer diameter deviation (deformation) in different areas of the protective tube. The upper surface height position measured by each section bearing mechanism 1 can be connected along the X direction to reflect the straightness of the generatrix of the protective tube. Based on this, it is determined whether the straightness of the protective tube meets the requirements.

[0073] (2) Roundness and surface quality inspection: Based on the previous steps, the lifting drive mechanism 11 drives the moving plate 204 to continue moving downward. The pressure elastic element 212 first contacts the upper receiving box 201. Then, the moving plate 204 contacts the force detection unit 205 during the downward movement. When the moving plate 204 moves to the preset position, the pressure elastic element 212 is in a compressed state, and the pressure roller 210 does not contact the upper roller 211. In this way, the pressure elastic element 212 pre-presses the upper receiving box 201; the roller drive unit 2 02 Drive the upper roller 211 to rotate, and drive the protective tube and the lower roller 501 to rotate together through friction. If there are cutting burrs at the end of the protective tube, damage on the surface, or bending of the tube, the uneven part of its surface will lift the upper roller 211 when the protective tube rotates, thereby causing the upper receiving box 201 to jump along the radial (Z direction) of the protective tube. The outer diameter distance sensor 207 detects the radial displacement change of the upper receiving box 201 in real time, and combined with the number of rotations, detects the deformation of the protective tube, thereby determining the roundness and surface quality of the protective tube.

[0074] (3) Radial stiffness detection: Based on the previous steps, the lifting drive mechanism 11 drives the moving plate 204 to continue moving downward along the Z direction. Since the upper roller 211 has already contacted the protective tube, it is subjected to the reaction force of the protective tube, and the upper receiving box 201 remains stationary. The pressure roller 210 moves down and weds into the roller gap between the two upper rollers 211, and presses the upper roller 211. The lifting drive mechanism 11 applies downward pressure, which is transmitted to the protective tube in sequence through the moving plate 204, the force detection unit 205, the main plate 203, the connecting guide plate 208, the rotating shaft 209, the pressure roller 210, and the upper roller 211, causing the protective tube to undergo radial deformation. The lifting drive mechanism 11 (such as a servo cylinder with built-in displacement detection) detects the deformation displacement of the protective tube, and the force detection unit 205 detects the deformation displacement of the protective tube. The applied pressure is used to calculate the displacement-pressure curve (radial stiffness characteristic curve) of the protective pipe. Since the radial stiffness of the protective pipe is positively correlated with the pipe wall thickness, when the wall thickness at a certain position of the protective pipe is less than the specified thickness, the radial stiffness characteristic curve measured at that position will show a significant difference compared with the standard curve (the reference curve for qualified pipe materials) or the curve measured at other positions of the protective pipe. Accordingly, the radial stiffness of the protective pipe at different positions is detected by the upper pressure drive roller mechanism 2 in each section bearing mechanism 1, and the radial stiffness characteristic curves of each segment of the protective pipe along the axial direction are obtained. The curves of each segment are compared with each other or with the standard curve to determine whether the wall thickness of the protective pipe at different positions is uniform and meets the requirements, thereby achieving rapid screening of the wall thickness compliance of the protective pipe.

[0075] For specific embodiments, see Figure 5 The limiting thrust mechanism 4 includes a thrust bearing bracket 402 and a thrust cylinder 401. The thrust cylinder 401 is mounted on the thrust bearing bracket 402, and the output end of the thrust cylinder 401 is connected to the push plate 403. After the protective tube is input, the protective tube is moved to the first position. The thrust cylinder 401 drives the push plate 403 to push the protective tube to the preset position to achieve Y-axis positioning.

[0076] For specific embodiments, see Figure 1 The circulating heating mechanism 7 includes two connecting support frames 701 and a hot gas generator 702. One of the connecting support frames 701 is installed on the first sub-support mechanism 1, and the other connecting support frame 701 is installed on the last sub-support mechanism 1. A pipe is connected between the two connecting support frames 701, and the hot gas generator 702 is connected in series on the pipe. The connecting support frame 701 is used to connect the pipe to the end of the protective pipe.

[0077] During operation, hot air generated by the hot air generator 702 enters the protective tube from one end through a pipe, heating the inner wall of the protective tube. After the hot air flows out from the other end of the protective tube, it returns to the hot air generator 702 through a pipe, realizing the recycling of hot air. After working for a period of time, the operation is reversed (switching the direction of hot air flow) to ensure that both ends of the protective tube are heated evenly. After the protective tube is heated and softened in the above manner, the upper pressure drive roller mechanism 2 and the lower support roller mechanism 5 cooperate to apply a certain pressure and drive the protective tube to rotate, thereby straightening the protective tube. After straightening is completed, heating is stopped, and the protective tube cools and sets naturally to ensure its straightness.

[0078] For specific embodiments, see Figure 6 The size detection mechanism 8 includes two unidirectional detection units 801, one of which is disposed on the first of the sub-supporting mechanisms 1 and the other is disposed on the last of the sub-supporting mechanisms 1; the two unidirectional detection units 801 respectively detect the thickness of the pipe walls at both ends of the protective pipe and cooperate to detect the total length of the protective pipe.

[0079] In a further embodiment, the unidirectional detection unit 801 includes a mounting support bracket 8018 and a detection support plate 8014. At least two feed cylinders 8015 and a fixed cylinder 8011 are mounted on the detection support plate 8014. The output ends of the feed cylinders 8015 are all connected to the mounting support bracket 8018, used to drive the detection support plate 8014 and the fixed cylinder 8011 to move together. A measuring circular plate 8012 and a compression spring 8013 are sleeved on the fixed cylinder 8011. The compression spring 8013 pushes the measuring circular plate 8012 to move towards the front end of the fixed cylinder 8011. The measuring circular plate 8012 is mounted on the fixed cylinder 8011. The tube moves within a preset stroke on 011; a rotating cylinder 8019 is rotatably disposed inside the fixed cylinder 8011, and an inner diameter measuring sensor 8016 is radially disposed on the section of the rotating cylinder 8019 extending to the outside of the fixed cylinder 8011 to detect the inner diameter of the protective tube; a rotation drive unit 80110 is disposed at the end of the fixed cylinder 8011, and the output end of the rotation drive unit 80110 is coaxially connected to the rotating cylinder 8019 to drive the rotating cylinder 8019 to rotate; a length measuring sensor 8017 is disposed on the mounting support bracket 8018 to detect and measure the displacement of the measuring circular plate 8012.

[0080] Detection Principle: During detection, the fixed cylinder 8011, rotating cylinder 8019, and protective tube positioned in the third position are concentrically arranged. The feed cylinder 8015 drives the detection bearing plate 8014 to move the fixed cylinder 8011 into the protective tube, causing the inner diameter measuring sensor 8016 on the rotating cylinder 8019 to extend into the protective tube. Upon continued feeding, the measuring disc 8012 first contacts the end face of the protective tube, compressing the compression spring 8013 and causing the measuring disc 8012 to fit tightly against the end of the protective tube. The length measuring sensor 8017 detects the displacement of the measuring disc 8012. Compared to the reference position, the total length of the protective tube is calculated by combining the measurement results of the two unidirectional detection units 801 and the known distance between their installation positions. At the same time, the rotary drive unit 80110 drives the rotary cylinder 8019 to rotate one revolution, and the inner diameter measuring sensor 8016 rotates around the axis of the protective tube with the rotary cylinder 8019 to scan one revolution, measuring the radial dimension of the inner hole of the protective tube around one revolution, and calculating the inner diameter of the protective tube (and evaluating the roundness of the inner hole). Combining the outer diameter of the protective tube measured by the aforementioned upper pressure drive roller mechanism 2 with the inner diameter measured in this step, the tube wall thickness is then calculated.

[0081] In a specific embodiment, the supporting body 000 is provided with a plurality of tube conveying mechanisms 6, which are used to automatically input the protective tube into the supporting body 000 and to automatically output the protective tube in the fourth position from the supporting body 000.

[0082] For further embodiments, see Figure 4 The tube conveying mechanism 6 includes a fixed frame 607 and a movable frame 611. At least two rods 604 are provided through the fixed frame 607. One end of each rod 604 is connected to a limiting block 606, and the other end is connected to the movable frame 611. The rods 604 guide the lifting and lowering of the movable frame 611. A lifting drive unit 605 is provided on the fixed frame 607. The output end of the lifting drive unit 605 is connected to the movable frame 611 and is used to drive the movable frame 611 to move along the Z direction. A support spring 608 is sleeved on each rod 604. One end of the support spring 608 abuts against the movable frame 611, and the other end abuts against the fixed frame 607, providing buffer support for the movable frame 611.

[0083] A roller 601 is rotatably mounted on the movable frame 611. Two conveyor motors 609 are mounted on the movable frame 611, and the output ends of the conveyor motors 609 are connected to small pulleys 603. A conveyor belt 610 is synchronously fitted onto the small pulleys 603 and the roller 601 to drive the small pulleys 603 and the roller 601 to rotate synchronously. The roller 601 has an annular conical groove 602 circumferentially formed. The protective tube is inserted into the annular conical groove 602, and the conical groove centers and limits the protective tube. The conveyor motors 609 drive the roller 601 to rotate, and friction drives the protective tube to move along the Y direction, realizing the conveying of the protective tube. During loading, the lifting drive unit 605 drives the movable frame 611 to rise along the Z direction to a preset height, so that the roller 601 receives the protective tube and conveys it to the lower support roller mechanism 5 before lowering it. During unloading, the movable frame 611 rises again to receive the protective tube and outputs it.

[0084] In a specific embodiment, the visual acquisition mechanism 9 includes an industrial camera and a matching light source, which is used to acquire images of the overall appearance of the protective tube in the fourth position. The image recognition is used to detect appearance defects such as scratches, damage, dents, spots, stains, bubbles, and oxidation discoloration on the outer surface of the protective tube. During the detection, the protective tube rotates under the drive of the upper roller 211, and the visual acquisition mechanism 9 can acquire images of the circumferential surface of the protective tube from all directions and stitch together multiple images to obtain the overall appearance of the protective tube.

[0085] Working principle:

[0086] The protective tube is input into the bearing body 000 along the Y direction. The horizontal drive mechanism 10 drives the upper pressure drive roller mechanism 2, the lower support roller mechanism 5, and the protective tube to be sequentially moved to the first position, the second position, the third position, and the fourth position, respectively to complete the Y-direction positioning, heat straightening, wall thickness and length detection, and appearance inspection. After all the inspections are completed, the tube is output by the tube conveying mechanism 6. During this process, the upper pressure drive roller mechanism 2 and the lower support roller mechanism 5 cooperate to detect the outer diameter / roundness / straightness of the protective tube and straighten it after heat straightening.

[0087] I. Material feeding and Y-axis positioning

[0088] The lifting drive unit 605, located in the tube conveying mechanism 6 inside the bearing body 000, drives the moving frame 611 to rise along the Z direction to a preset height, so that the belt roller 601 connects with the external loading station; the protective tube is fed in along the Y direction and inserted into the annular conical groove 602 on the belt roller 601, and the conical groove centers and limits the protective tube; the conveying motor 609 drives the belt roller 601 to rotate via the small pulley 603 and the conveyor belt 610, and drives the protective tube to move along the Y direction through friction, and sequentially passes through the guide window 103 of each sub-bearing mechanism 1 into the bearing body 000 and is lowered, and is carried in sections by the lower support roller mechanism 5 of each sub-bearing mechanism 1 so that the protective tube is input into the bearing body 000;

[0089] After the input is completed, the horizontal drive mechanism 10 drives the upper pressure drive roller mechanism 2 and the lower support roller mechanism 5, which move the protective tube along the X direction to the first position. The thrust cylinder 401 drives the push plate 403 to extend along the Y direction, pushing the protective tube to the preset position, realizing the Y-direction positioning of the protective tube. After the protective tube is positioned, subsequent detection is carried out at this position.

[0090] II. Inspection of outer diameter, roundness, straightness and radial stiffness

[0091] (1) Downward alignment and outer diameter detection: When the protective tube is in the first position, after the protective tube is supported by the lower support roller mechanism 5, the lifting drive mechanism 11 drives the moving plate 204 to move downward. At this time, the upper roller 211 has not yet contacted the protective tube. The moving plate 204 will drive the main plate 203 and the upper receiving box 201 to move downward together to the preset position. When the upper roller 211 contacts the upper surface of the protective tube, the upper pressure drive roller mechanism 2 makes the upper roller 211 fit the protective tube under its own weight and the pre-pressure of the pressure elastic element 212. The outer diameter distance sensor 207 in each section support mechanism 1 detects the distance between the main plate 203 and the upper receiving box 201 respectively, reflecting the height position of the upper surface of different areas of the protective tube. Combined with the fixed reference of the lower roller 501, the outer diameter of different areas of the protective tube is calculated to determine whether there is an outer diameter deviation in different areas of the protective tube. At the same time, the upper surface height position measured by each section support mechanism 1 along the X direction reflects the straightness of the generatrix of the protective tube. Based on this, it is determined whether the straightness of the protective tube meets the requirements.

[0092] (2) Roundness and surface quality detection: The roller drive unit 202 drives the upper roller 211 to rotate. Since the upper roller 211 is pressed against the surface of the protective tube, the protective tube and the lower roller 501 are rotated together by friction. When the protective tube rotates, if there are cutting burrs at its port, damage on the surface, or bending of the tube, the uneven surface will lift the upper roller 211, thereby causing the upper receiving box 201 to jump along the radial (Z direction) of the protective tube. At this time, the pressure elastic element 212 extends and retracts within the elastic stroke, allowing the upper receiving box 201 to float with the surface of the protective tube. The outer diameter distance sensor 207 detects the radial displacement change of the upper receiving box 201 in real time. Combined with the number of rotations, the deformation of the protective tube is detected, and the roundness and surface quality of the protective tube are determined accordingly.

[0093] (3) Radial stiffness detection and wall thickness compliance screening: When the protective tube is in the first position, the lifting drive mechanism 11 drives the moving plate 204 to move continuously downward along the Z direction. When the upper roller 211 contacts the protective tube, it is subjected to the reaction force of the protective tube, and the upper receiving box 201 remains stationary. The pressure roller 210 wedges into the gap between the two upper rollers 211 and presses the upper rollers 211. The lifting drive mechanism 11 continues to apply downward pressure, which is transmitted to the protective tube in sequence through the moving plate 204, the force detection unit 205, the main plate 203, the connecting guide plate 208, the rotating shaft 209, the pressure roller 210, and the upper roller 211, causing the protective tube to undergo radial deformation. The lifting drive mechanism 11 (such as a servo electric cylinder with built-in displacement detection) detects the deformation displacement of the protective tube, and the force detection unit... The pressure applied by the Yuan 205 detector is used to calculate the displacement-pressure curve (radial stiffness characteristic curve) of the protective pipe. Since the radial stiffness of the protective pipe is positively correlated with the pipe wall thickness, when the wall thickness at a certain position of the protective pipe is less than the specified thickness, the radial stiffness characteristic curve measured at that position will show a significant difference compared with the standard curve (the reference curve for qualified pipe materials) or the curves measured at other positions of the protective pipe. Accordingly, the radial stiffness of the protective pipe at different positions is detected by the upper pressure drive roller mechanism 2 in each section bearing mechanism 1, and the radial stiffness characteristic curves of each segment of the protective pipe along the axial direction are obtained. The curves of each segment are compared with each other or with the standard curve to determine whether the wall thickness at different positions of the protective pipe is uniform and meets the requirements, thus achieving rapid screening of the wall thickness compliance of the protective pipe.

[0094] III. Workplace Dispatch

[0095] The horizontal drive mechanism 10 drives the lifting drive mechanism 11 to move precisely along the X direction; the lifting drive mechanism 11 is connected to the upper pressure drive roller mechanism 2, which in turn drives the upper pressure drive roller mechanism 2, the lower support roller mechanism 5 and the sliding guide mechanism 3 to move together along the X direction; since the upper pressure drive roller mechanism 2 and the lower support roller mechanism 5 clamp the protective tube, the protective tube is driven and sequentially moved along the X direction to the second position, the third position and the fourth position, realizing the conveying between each station.

[0096] IV. Second position: Thermal straightening

[0097] When there is a large deviation in the roundness or straightness of the protective tube, the protective tube is moved to the second position. The two connecting support frames 701 installed on the first and last sub-support mechanisms 1 in the circulating heating mechanism 7 are connected to both ends of the protective tube. The hot air generated by the hot air generator 702 enters the interior of the protective tube from one end through the pipe, heating the inner wall of the protective tube. The hot air flows out from the other end of the protective tube and returns to the hot air generator 702 through the pipe, realizing the recycling of hot air. After working for a period of time, the operation is reversed (switching the direction of hot air flow) to make the two ends of the protective tube heat evenly. After the interior of the protective tube is softened by heat, the upper pressure drive roller mechanism 2 and the lower support roller mechanism 5 cooperate, and the lifting drive mechanism 11 applies a certain pressure and the roller drive unit 202 drives the protective tube to rotate, straightening the softened protective tube. After straightening is completed, heating is stopped, and the protective tube cools and sets naturally to ensure its straightness. If there is no need for straightening, the protective tube is directly moved to the third position.

[0098] V. Third Location: Wall Thickness and Length Inspection

[0099] After the protective tube is moved to the third position, two unidirectional detection units 801 installed on the first and last sub-component bearing mechanisms 1 respectively detect both ends of the protective tube to complete the detection of the protective tube wall thickness and length.

[0100] VI. Fourth position: Visual inspection

[0101] After the protective tube is moved to the fourth position, multiple vision acquisition mechanisms 9 acquire images of the overall appearance of the protective tube. During the inspection, the protective tube rotates under the drive of the upper roller 211, and the vision acquisition mechanism 9 acquires images of the circumferential surface of the protective tube from all directions. The multiple images are then stitched together, and the appearance defects such as scratches, damage, dents, spots, stains, bubbles, and oxidation discoloration on the outer surface of the protective tube are detected through image recognition to obtain the overall appearance status of the protective tube.

[0102] VII. Material Feeding

[0103] After all tests are completed, the lifting drive unit 605 of the tube conveying mechanism 6 drives the moving frame 611 to rise, so that the belt roller 601 receives the protective tube. The conveying motor 609 drives the belt roller 601 to rotate, and the protective tube moves along the Y direction through friction, and the protective tube is output from the bearing body 000, completing the full process test of a single protective tube.

[0104] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A multi-parameter testing device for cable protection pipes by roller pressing, characterized in that, include: The main body (000) includes multiple sub-supporting mechanisms (1); the sub-supporting mechanisms (1) are arranged side by side along the Y direction, so that the cable protection pipe can be transported into the main body (000) along the Y direction and carried in sections by each sub-supporting mechanism; each sub-supporting mechanism (1) is slidably provided with two sliding guide mechanisms (3) that can move freely along the X direction. The upper pressure drive roller mechanism (2) is respectively disposed in each of the sub-bearing mechanisms (1) and is slidably connected to the sliding guide mechanism (3) in the corresponding sub-bearing mechanism (1) so that the upper pressure drive roller mechanism (2) can move within a preset stroke in the Z direction; The lower roller mechanism (5) is respectively set in each of the sub-bearing mechanisms (1) and is slidably connected to the sliding guide mechanism (3) so that the lower roller mechanism (5) can move within a preset stroke in the Z direction; it is located directly below the upper pressure drive roller mechanism (2), and it cooperates with the upper pressure drive roller mechanism (2) to complete the outer diameter detection, roundness detection and straightness detection of the protective tube; A horizontal drive mechanism (10) is respectively set in each of the aforementioned sub-bearing mechanisms (1), and a lifting drive mechanism (11) is set on it to drive the lifting drive mechanism (11) to move along the X direction; the output end of the lifting drive mechanism (11) is connected to the upper pressure drive roller mechanism (2), thereby driving the upper pressure drive roller mechanism (2) to move up and down along the Z direction, and thus detecting the radial stiffness of the protective tube; when the horizontal drive mechanism (10) drives the lifting drive mechanism (11) to move, it simultaneously drives the upper pressure drive roller mechanism (2), the lower support roller mechanism (5) and the sliding guide mechanism (3) to move together along the X direction, and the protective tube moves sequentially to the first position, the second position, the third position and the fourth position; The limiting thrust mechanism (4) is set on the bearing body (000) and is used to push the protective tube placed in the first position to the preset position to realize the Y-direction positioning of the protective tube; The circulating heating mechanism (7) is installed on the supporting body (000) and is used to introduce circulating hot air into the protective tube located in the second position, and to straighten the protective tube by cooperating with the upper pressure drive roller mechanism (2) and the lower support roller mechanism (5). A size detection mechanism (8) is installed on the supporting body (000) and is used to detect the wall thickness and length of the protective tube placed in the third position; Multiple visual acquisition mechanisms (9) are provided and are all located on the supporting body (000) for visual inspection of the overall appearance of the protective tube located in the fourth position.

2. The multi-parameter testing equipment for cable protection pipes by roller pressing as described in claim 1, characterized in that: Each sliding guide mechanism (3) includes four movable sliders (302), and a guide rod (301) is connected between every two movable sliders (302); the movable sliders (302) are slidably disposed on the sub-bearing mechanism (1) and can move freely along the X direction; the guide rod (301) is vertically disposed, and the upper pressure drive roller mechanism (2) and the lower support roller mechanism (5) are slidably connected to the guide rod (301) respectively.

3. The multi-parameter testing equipment for cable protection pipes by roller pressing as described in claim 1, characterized in that: The sub-supporting mechanism (1) includes two parallel plates (101) distributed in parallel. Multiple support rods (102) are connected between the two parallel plates (101), and guide windows (103) are opened opposite each other on the two parallel plates (101). The upper pressure drive roller mechanism (2), the lower support roller mechanism (5), and the horizontal drive mechanism (10) are all arranged between the two parallel plates (101), and the sliding guide mechanism (3) is slidably arranged in the guide window (103).

4. The multi-parameter testing equipment for cable protection pipes by roller pressing as described in claim 1, characterized in that: The lower roller mechanism (5) includes a lower receiving box (502), and two lower rollers (501) are arranged in parallel rolling inside the lower receiving box (502).

5. The multi-parameter testing equipment for cable protection pipes by roller pressing as described in claim 1, characterized in that: The upper pressure drive roller mechanism (2) includes an upper housing (201), a main plate (203), and a roller drive unit (202). Two upper rollers (211) are arranged in parallel rolling inside the upper receiving box (201). The roller driving unit (202) is arranged on the upper receiving box (201) and is used to drive the upper rollers (211) to rotate. At least two connecting guide plates (208) are vertically arranged at the lower end of the main body plate (203). The connecting guide plates (208) pass downward through the upper receiving box (201) and slide with the upper receiving box (201), so that the upper receiving box (201) can float relative to the main body plate (203) in the Z direction. A rotating shaft (209) is rotatably arranged between each of the connecting guide plates (208). A pressure roller (210) is sleeved on the rotating shaft (209). The pressure roller (210) is located inside the upper receiving box (201) and corresponds to the roller gap between the two upper roller bodies (211). The upper end of the main plate (203) is connected to at least four guide T-shaped columns (206) and a force detection unit (205). The guide T-shaped columns (206) are all inserted through the moving plate (204), so that the moving plate (204) can slide along the length direction of the guide T-shaped columns (206). The moving plate (204) is connected to the output end of the lifting drive mechanism (11). The main plate (203) is provided with an outer diameter distance sensor (207) for detecting the distance between the main plate (203) and the upper housing (201). The lower end of the main plate (203) is also provided with a pressure elastic element (212).

6. The multi-parameter testing equipment for cable protection pipes by roller pressing as described in claim 1, characterized in that: The limiting thrust mechanism (4) includes a thrust bearing bracket (402) and a thrust cylinder (401). The thrust cylinder (401) is mounted on the thrust bearing bracket (402), and the output end of the thrust cylinder (401) is connected to the push plate (403).

7. The multi-parameter testing equipment for cable protection pipes by roller pressing as described in claim 1, characterized in that: The circulating heating mechanism (7) includes two connecting support frames (701) and a hot gas generator (702). One of the connecting support frames (701) is installed on the first sub-support mechanism (1), and the other connecting support frame (701) is installed on the last sub-support mechanism (1). A pipe is connected between the two connecting support frames (701), and a hot gas generator (702) is connected in series on the pipe.

8. The multi-parameter testing equipment for cable protection pipes by roller pressing as described in claim 1, characterized in that: The size detection mechanism (8) includes two unidirectional detection units (801), one of which is located on the first sub-support mechanism (1) and the other is located on the last sub-support mechanism (1). The two unidirectional detection units (801) respectively detect the thickness of the pipe wall at both ends of the protective pipe and cooperate to detect the total length of the protective pipe.

9. The multi-parameter testing equipment for cable protection pipes by roller pressing as described in claim 8, characterized in that: The unidirectional detection unit (801) includes a mounting support bracket (8018) and a detection support plate (8014). At least two feed cylinders (8015) and a fixed cylinder (8011) are mounted on the detection support plate (8014). The output ends of the feed cylinders (8015) are connected to the mounting support bracket (8018) to drive the detection support plate (8014) and the fixed cylinder (8011) to move together. A measuring disc (8012) and a compression spring (8013) are sleeved on the fixed cylinder (8011). The compression spring (8013) pushes the measuring disc (8012) towards the front end of the fixed cylinder (8011). The measuring disc (8012) is positioned on the fixed cylinder (8011). 11) Move within a preset stroke; a rotating cylinder (8019) is rotatably arranged inside the fixed cylinder (8011), and an inner diameter measuring sensor (8016) is radially arranged on the section of the rotating cylinder (8019) extending to the outside of the fixed cylinder (8011) to detect the inner diameter of the protective tube; a rotating drive unit (80110) is provided at the end of the fixed cylinder (8011), and the output end of the rotating drive unit (80110) is coaxially connected to the rotating cylinder (8019) to drive the rotating cylinder (8019) to rotate; a length measuring sensor (8017) is provided on the mounting support bracket (8018) to detect the displacement of the measuring circular plate (8012).

10. The multi-parameter testing equipment for cable protection pipes by roller pressing as described in claim 1, characterized in that: The carrier body (000) is provided with multiple tube conveying mechanisms (6) for automatically inputting the protective tube into the carrier body (000) and automatically outputting the protective tube in the fourth position from the carrier body (000). The tube conveying mechanism (6) includes a fixed frame (607) and a movable frame (611). At least two rods (604) are provided through the fixed frame (607). One end of each rod (604) is connected to a limiting block (606), and the other end is connected to the movable frame (611). A lifting drive unit (605) is provided on the fixed frame (607). The output end of the lifting drive unit (605) is connected to the movable frame (611) to drive the movable frame (611) to move along the Z direction. A support spring (608) is sleeved on each rod (604). One end of the support spring (608) abuts against the movable frame (611), and the other end abuts against the fixed frame (607). A roller (601) is rotatably mounted on the movable frame (611). Two conveyor motors (609) are mounted on the movable frame (611). The output ends of the conveyor motors (609) are connected to small pulleys (603). A conveyor belt (610) is synchronously mounted on the small pulleys (603) and the roller (601) to drive the small pulleys (603) and the roller (601) to rotate synchronously. The roller (601) has an annular conical groove (602) circumferentially.

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