Performance detection equipment for cable protection pipe

Abstract

The invention relates to the technical field of material performance detection equipment, in particular to performance detection equipment for a cable protection tube, which comprises a rack, a test box is mounted in the rack, a first telescopic part is mounted on the rack and located at the bottom of the test box, and a pressure detection assembly is mounted at the telescopic end of the first telescopic part. A sample fixing assembly is installed on the pressure detection assembly, a box cover assembly is installed at the position, located at the top of the test box, of the rack, an installation frame is fixedly installed at the top of the rack, a second telescopic part is installed on the installation frame, and a detection execution assembly is installed at the telescopic end of the second telescopic part; the test box is connected with a corrosion simulation assembly and a temperature simulation assembly, and a control system is mounted in the mounting rack. According to the invention, integrated layout of all the components and centralized management and control of the control system are utilized, so that integrated performance detection of compression resistance, drop hammer impact, corrosion and high temperature of the cable protection pipe is realized, equipment disassembly or detection platform replacement is not needed, and the detection efficiency is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of material performance testing equipment, and specifically to a performance testing device for cable protection pipes. Background Technology

[0002] Cable protection pipes are key components used in power and communication engineering to protect cables from external damage, corrosion, and aging. Their performance directly affects the safe operation of the cable system.

[0003] Currently, performance testing of cable protection pipes mainly relies on single-function testing equipment. For example, compressive strength testing requires a dedicated pressure testing machine, impact resistance testing requires a separate drop hammer impact testing machine, and corrosion resistance and heat resistance testing require separate corrosion test chambers and constant temperature chambers. Existing technologies are limited in function, require changing multiple pieces of equipment to test different properties, are cumbersome, and have low testing efficiency. Furthermore, samples are easily affected by the environment during transfer between different devices, leading to a decrease in the accuracy of test data.

[0004] Therefore, designing a cable protection pipe performance testing device that integrates multiple testing functions and has strong adaptability is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In order to achieve integrated testing of core properties such as pressure resistance, impact resistance, corrosion resistance, and heat resistance, improve testing efficiency, and adapt to cable protection pipe samples of different specifications, this application provides a performance testing device for cable protection pipes.

[0006] The technical solution for a performance testing device for cable protection pipes provided in this application is as follows: A performance testing device for cable protection pipes includes a frame, a test chamber fixedly installed inside the frame, a first telescopic component mounted on the frame at the bottom of the test chamber, the telescopic end of the first telescopic component slidingly and sealingly extending into the test chamber where a pressure testing component is fixedly installed, a sample fixing component fixedly installed on the pressure testing component, a chamber cover assembly mounted on the frame at the top of the test chamber, and a mounting frame fixedly installed on the top of the frame. A second telescopic component is mounted on the mounting frame corresponding to the sample fixing component, the telescopic end of the second telescopic component being equipped with a testing execution component for drop hammer impact testing and pressure resistance testing; a corrosion simulation component and a temperature simulation component are connected to the test chamber; and a control system electrically connected to the first telescopic component, the second telescopic component, the pressure testing component, the chamber cover assembly, the corrosion simulation component, and the temperature simulation component is installed inside the mounting frame.

[0007] By adopting the above technical solution, and utilizing the integrated layout of each component and the centralized management of the control system, integrated testing of multiple properties of cable protection pipes, such as pressure resistance, drop hammer impact, corrosion, and high temperature, has been achieved. There is no need to disassemble the equipment or replace the testing platform, which effectively improves the testing efficiency. At the same time, the cooperation of each component ensures the continuity and stability of the testing process.

[0008] Furthermore, the pressure detection assembly includes a support plate fixedly installed on the telescopic end of the first telescopic component. At least two piston cylinders are fixedly installed on the support plate. Each piston cylinder has a piston body slidably connected inside it. A cylinder cover is detachably and slidably installed on the top of each piston cylinder. A piston rod is slidably and slidably connected to the cylinder cover. The bottom end of the piston rod is fixedly connected to the piston body. A mounting seat is fixedly connected to the top end of the piston rod. The sample fixing assembly is fixedly installed on the mounting seat. Each piston cylinder is fixedly and sealedly connected to a hydraulic pipe. All the hydraulic pipes are sealedly connected to a hydraulic hose. A pressure sensor is sealedly connected to the hydraulic hose. The pressure sensor is electrically connected to the control system.

[0009] Furthermore, the sample fixing assembly includes a fixing seat fixedly mounted on the pressure detection assembly. The fixing seat has a central hole corresponding to the sample of the cable protection tube. An annular groove is formed around the central hole on the fixing seat. A drive ring is slidably connected inside the annular groove. Multiple centrally symmetrical first mounting holes are formed on the side wall of the central hole. The first mounting holes penetrate the annular groove and a locking rod is slidably connected inside the first mounting holes. A spiral groove is formed on the locking rod corresponding to the drive ring. A spiral protrusion is formed on the drive ring corresponding to the groove. The locking rod and the drive ring are connected by transmission through the groove and the protrusion. A pad is fixedly connected to one end of the locking rod facing the center hole. A second mounting hole is formed on the fixing seat, penetrating the annular groove. A drive mechanism that is rotatably connected to the drive ring is rotatably connected inside the second mounting hole.

[0010] Furthermore, the driving mechanism includes a driving shaft, which is rotatably connected inside the second mounting hole. A driving gear is fixedly installed at the inner end of the driving shaft. A ring-shaped groove is evenly distributed on the driving ring corresponding to the driving gear. A handwheel is fixedly connected to the outer end of the driving shaft.

[0011] Furthermore, the cover assembly includes a cover plate slidably connected to the frame and located on the top surface of the test chamber. A sealing ring is fixedly installed on the bottom surface of the cover plate corresponding to the top surface of the test chamber. A connecting seat is fixedly installed on the top surface of the cover plate. A third telescopic member is fixedly installed on the frame corresponding to the connecting seat. The telescopic end of the third telescopic member is fixedly connected to the connecting seat. The third telescopic member is electrically connected to the control system.

[0012] Furthermore, the detection execution component includes a rotating body, with a connecting shaft coaxially fixedly connected to the top of the rotating body. A insertion hole is provided on the top of the connecting shaft corresponding to the telescopic end of the second telescopic member. The connecting shaft is rotatably connected to the telescopic end of the second telescopic member through the insertion hole. A torsion spring is installed between the connecting shaft and the telescopic end of the second telescopic member. A limit pin is fixedly connected to the outer side of the connecting shaft near its top. A limit sleeve fitted on the connecting shaft is fixedly installed on the mounting bracket. A spiral groove is provided on the inner side of the limit sleeve corresponding to the limit pin. A mounting sleeve is fitted on the outer side of the rotating body. A limit post is fixedly connected to the inner wall of the mounting sleeve. A limit groove penetrating both ends of the rotating body is provided corresponding to the limit post. A vertically arranged slide rail is fixedly installed on the mounting bracket. A slider is fixedly installed on the outer side of the mounting sleeve corresponding to the slide rail. A test head mounting base is fixedly connected to the bottom of the mounting sleeve. A mounting rod is fixedly connected to the bottom of the test head mounting base. Several counterweights are detachably fitted on the mounting rod. A test head is detachably installed at the bottom of the mounting rod.

[0013] Furthermore, the test head is made of high-strength alloy steel with a hardness ≥ HRC55.

[0014] Furthermore, the corrosion simulation component includes a liquid storage tank fixedly installed in the frame, the liquid storage tank storing corrosive liquid, a tank cover installed on the top of the liquid storage tank, a delivery pump fixedly installed on the tank cover, an input pipe fixedly connected to the input end of the delivery pump extending into the liquid storage tank, an output pipe fixedly connected to the output end of the delivery pump, a water distribution pipe connected to the output pipe, a plurality of parallel spray pipes fixedly connected to the water distribution pipe, the spray pipes being fixedly and sealed to the test chamber, nozzles being installed on the spray pipes corresponding to the sample fixing component, a recovery pipe fixedly and sealed to the bottom of the test chamber, the recovery pipe being connected to the liquid storage tank, and the delivery pump being electrically connected to the control system.

[0015] Furthermore, the temperature simulation component includes a heater connected to an air supply pipe. The other end of the air supply pipe is fixedly and sealed to the test chamber near its top. A temperature sensor is fixedly installed on the end of the test chamber away from the air supply pipe. Both the heater and the temperature sensor are electrically connected to the control system.

[0016] Furthermore, the control system includes a controller, a display screen, and a control panel. The controller is electrically connected to the first telescopic component, the second telescopic component, the pressure detection component, the cover assembly, the corrosion simulation component, and the temperature simulation component.

[0017] Beneficial effects achieved: This application adopts an integrated equipment structure design, which highly integrates functional modules such as sample fixation, pressure testing, pressure and drop hammer impact testing, corrosion and temperature environment simulation, and intelligent control. With the linkage and closed-loop control logic of multiple components, it realizes integrated testing of multiple properties of cable protection pipes, such as pressure resistance, drop hammer impact, corrosion resistance, and high temperature resistance. It eliminates the need for frequent replacement of testing equipment or disassembly of components, greatly improving testing efficiency, while ensuring the continuity and stability of the testing process.

[0018] This application utilizes a pressure detection structure that transmits hydraulic pressure through a multi-piston cylinder and receives feedback from a pressure sensor, a sample fixing structure with a centrally symmetrical locking rod and a worm gear meshing transmission, and a dual-condition detection execution structure with a slide rail guide and a torsion spring for unlocking. These features effectively improve the accuracy of each testing step, avoid data distortion caused by component deviations or unstable sample fixing, and ensure the accuracy and reliability of the test results.

[0019] This application utilizes a corrosion liquid recycling system and a temperature closed-loop control structure to reduce the cost of testing consumables and accurately simulate the actual service environment of cable protection pipes, making the test results more valuable. At the same time, the design of detachable cylinder heads, test heads, counterweights, and other components improves the ease of maintenance and adaptability of the equipment to different operating conditions.

[0020] This application achieves automated operation of the testing process through centralized control and data visualization functions of the control system, reducing errors caused by manual intervention. At the same time, it facilitates operators to monitor the test status in real time and handle abnormal situations in a timely manner, further improving the intelligence level and ease of operation of the equipment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of one embodiment of this application.

[0022] Figure 2 This is a structural exploded view of one embodiment of this application.

[0023] Figure 3 This is a schematic diagram of the internal structure of one embodiment of this application.

[0024] Figure 4 yes Figure 3 Schematic diagram of the cross-sectional structure along the AA direction.

[0025] Figure 5 yes Figure 3 Schematic diagram of the cross-sectional structure along the BB direction.

[0026] Figure 6 This is an exploded view of the pressure detection component in one embodiment of this application.

[0027] Figure 7 This is an exploded view of the sample fixing component in one embodiment of this application.

[0028] Figure 8 This is a schematic diagram of the transmission structure of the sample fixing component in one embodiment of this application.

[0029] Figure 9 This is an exploded view of the structure of the box cover assembly in one embodiment of this application.

[0030] Figure 10 This is a structural decomposition diagram of the detection execution component in one embodiment of this application.

[0031] Figure 11 This is a structural exploded view of a corrosion simulation component in one embodiment of this application.

[0032] Figure 12 This is an exploded view of the temperature simulation component in one embodiment of this application.

[0033] Explanation of reference numerals in the attached drawings: 100, frame; 101, test chamber; 102, first telescopic component; 103, mounting bracket; 104, second telescopic component; 200, pressure detection assembly; 201, support plate; 202, piston cylinder; 203, piston body; 204, cylinder head; 205, piston rod; 206, mounting base; 207, hydraulic pipe; 208, hydraulic hose; 209, pressure sensor; 300, sample fixing assembly; 301, fixing base; 30 2. Center hole; 303. Annular groove; 304. Drive ring; 305. First mounting hole; 306. Locking rod; 307. Groove; 308. Raised strip; 309. Pad; 310. Second mounting hole; 311. Drive mechanism; 312. End cover; 3111. Drive shaft; 3112. Drive gear; 3113. Gear groove; 3114. Handwheel; 400. Box cover assembly; 401. Cover plate; 402. Sealing ring; 403. Connecting seat; 404. Third telescopic component; 500, Detection and execution assembly; 501, Rotating body; 502, Connecting shaft; 503, Torsion spring; 504, Limit pin; 505, Limit sleeve; 506, Spiral groove; 507, Mounting sleeve; 508, Limit post; 509, Limit groove; 5091, Vertical surface; 5092, Spiral surface; 510, Slide rail; 511, Slider; 512, Test head mounting base; 513, Mounting rod; 514, Counterweight; 515, Test head; 60 0. Corrosion simulation component; 601. Storage tank; 602. Tank cover; 603. Transfer pump; 604. Input pipe; 605. Output pipe; 606. Water distribution pipe; 607. Spray pipe; 608. Sprayer head; 609. Recovery pipe; 700. Temperature simulation component; 701. Heater; 702. Air supply pipe; 703. Temperature sensor; 704. Air outlet; 800. Control system; 801. Controller; 802. Display screen; 803. Control panel. Detailed Implementation

[0034] The following is in conjunction with the appendix Figure 1-12 This application will be described in further detail.

[0035] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] This application discloses a performance testing device for cable protection pipes.

[0038] Please refer to the above as well. Figures 1 to 12 In one embodiment of this application, a performance testing device for cable protection pipes includes a frame 100. A test chamber 101 is fixedly installed inside the frame 100. A vertically arranged first telescopic member 102 is installed on the frame 100 at the bottom of the test chamber 101. The telescopic end of the first telescopic member 102 slides through the test chamber 101 and is sealed. A pressure detection assembly 200 is fixedly installed inside the test chamber 101. A sample fixing assembly 300 is fixedly installed on the pressure detection assembly 200. A cover assembly 400 is installed on the frame 100 at the top of the test chamber 101. A mounting bracket 103 is fixedly installed, and a vertically arranged second telescopic member 104 is installed on the mounting bracket 103 corresponding to the sample fixing component 300. The telescopic end of the second telescopic member 104 is equipped with a detection execution component 500 for drop hammer impact testing and pressure resistance testing. A corrosion simulation component 600 and a temperature simulation component 700 are connected to the test chamber 101. A control system 800 is installed inside the mounting bracket 103 and is electrically connected to the first telescopic member 102, the second telescopic member 104, the pressure detection component 200, the chamber cover component 400, the corrosion simulation component 600, and the temperature simulation component 700.

[0039] During the work process, the cable protection pipe sample to be tested is first fixed on the sample fixing assembly 300.

[0040] If it is necessary to simulate corrosion or temperature environment, the control system 800 can be used to control the box cover assembly 400 to close, so that the test box 101 is in a sealed state. Then, the control system 800 can be used to start the corrosion simulation assembly 600 and the temperature simulation assembly 700 to introduce the corresponding corrosive medium into the test box 101 or adjust the temperature inside the box to create the corresponding test environment for the cable protection pipe sample.

[0041] If a pressure test is required, the box cover assembly 400 can be opened by the control system 800, and then the second telescopic component 104 can be extended downward by the control system 800, which will drive the detection execution component 500 to move towards the sample and apply pressure. At the same time, the pressure detection component 200 monitors the pressure data of the sample in real time and feeds the data back to the control system 800.

[0042] If a drop hammer impact test is required, the second telescopic component 104 can be adjusted upward to its limit position through the control system 800, and then the hammer can be dropped freely by the control detection execution component 500 to complete the impact performance test.

[0043] During the test, if it is necessary to adjust the height of the sample in the test chamber 101, the first telescopic component 102 can be extended or retracted by the control system 800, which will drive the pressure detection component 200 and the sample fixing component 300 to rise and fall synchronously to adapt to different test requirements.

[0044] After the test is completed, the control system 800 controls each component to reset, opens the sample fixing component 300, and the tested sample can be taken out.

[0045] Please refer to the above as well. Figures 1 to 12 In one specific embodiment of this application, the pressure detection assembly 200 includes a support plate 201 fixedly installed on the telescopic end of the first telescopic member 102. At least two piston cylinders 202 are fixedly installed on the support plate 201. A piston body 203 is slidably connected inside each piston cylinder 202. A cylinder head 204 is detachably and slidably installed on the top of the piston cylinder 202. A piston rod 205 is slidably connected to the cylinder head 204. The bottom end of the piston rod 205 is fixedly connected to the piston body 203. A mounting seat 206 is fixedly connected to the top end of the piston rod 205. A sample fixing assembly 300 is fixedly installed on the mounting seat 206. A hydraulic pipe 207 is fixedly and sealedly connected to each piston cylinder 202. All hydraulic pipes 207 are sealedly connected to a hydraulic hose 208. A pressure sensor 209 is sealedly connected to the hydraulic hose 208. The pressure sensor 209 is electrically connected to the control system 800.

[0046] During operation, when the detection execution component 500 applies pressure to the cable protection tube sample fixed on the sample fixing component 300, the pressure is transmitted sequentially to the mounting base 206 and the piston rod 205, pushing the piston body 203 to slide downwards in a sealed manner inside the piston cylinder 202. The sliding of the piston body 203 will squeeze the oil inside the piston cylinder 202. The squeezed oil is collected through the oil pressure pipe 207 to the oil pressure hose 208 and transmits the pressure to the pressure sensor 209. The pressure sensor 209 converts the pressure signal into an electrical signal and feeds it back to the control system 800 to complete the real-time detection of the pressure on the sample.

[0047] This design, by employing a multi-piston cylinder 202 in conjunction with a hydraulic pressure transmission structure, enables more uniform force distribution on the sample, more stable pressure transmission, and improved accuracy of pressure detection. The detachable cylinder head 204 facilitates subsequent inspection and replacement of vulnerable internal components, reducing maintenance costs. The electrical connection between the pressure sensor 209 and the control system 800 enables real-time monitoring and feedback of pressure data, enhancing the intelligence and automation of the detection process.

[0048] Please refer to the above as well. Figures 1 to 12 In one specific embodiment of this application, the sample fixing assembly 300 includes a fixing seat 301 fixedly installed on a mounting seat 206 in the pressure detection assembly 200. A central hole 302 is provided on the fixing seat 301 corresponding to the sample of the cable protection tube. An annular groove 303 is provided around the central hole 302 on the fixing seat 301. A driving ring 304 is slidably connected inside the annular groove 303. A plurality of centrally symmetrically arranged first mounting holes 305 are provided on the sidewall of the central hole 302. The first mounting holes 305 penetrate the annular groove 303, and a locking rod 306 is slidably connected inside the first mounting holes 305. The locking rod 306... The drive ring 304 has a spiral groove 307, and a spiral protrusion 308 is provided on the drive ring 304 corresponding to the groove 307. The locking rod 306 is connected to the drive ring 304 through the groove 307 and the protrusion 308. A pad 309 is fixedly connected to one end of the locking rod 306 facing the center hole 302. The fixed base 301 has a second mounting hole 310 that passes through the ring groove 303. A drive mechanism 311 that is rotatably connected to the drive ring 304 is rotatably connected inside the second mounting hole 310. An end cap 312 is detachably installed on the outer end of the fixed base 301 corresponding to the drive ring 304.

[0049] During operation, the cable protection tube sample is placed into the central hole 302 of the fixing base 301. Then, the drive mechanism 311 in the second mounting hole 310 is operated, causing the drive ring 304 in the annular groove 303 to rotate. Because the spiral-shaped protrusion 308 on the drive ring 304 cooperates with the spiral-shaped groove 307 on the locking rod 306, when the drive ring 304 rotates, the protrusion 308 slides along the groove 307, thereby pushing multiple locking rods 306 to move synchronously towards the central hole 302 along the first mounting hole 305. Once the pad 309 at the end of the locking rod 306 abuts against the outer wall of the cable protection tube sample, the sample is fixed. After the test is completed, the drive mechanism 311 is operated in reverse, causing the drive ring 304 to rotate in the opposite direction. The protrusion 308 drives the locking rods 306 to reset synchronously, releasing the sample and allowing it to be removed. Furthermore, the detachable end cap 312 facilitates the inspection and maintenance of internal components such as the drive ring 304 and the locking rods 306.

[0050] This design, through the cooperative structure of the spiral-shaped protrusion 308 and the groove 307, combined with the centrally symmetrically arranged locking rods 306, enables multiple locking rods 306 to move synchronously centripetally or centrifugally, ensuring uniform force on the sample and more stable fixation, thus preventing distortion of test results due to sample fixation deviation. A single drive mechanism 311 drives multiple locking rods 306, making operation simple and efficient, reducing the tediousness of manual operation. The detachable design of the end cap 312 facilitates subsequent inspection and replacement of vulnerable internal components, improving the ease of equipment maintenance. The pad 309 buffers the locking pressure, preventing the locking rods 306 from scratching the sample surface and ensuring sample integrity.

[0051] Please refer to the above as well. Figures 1 to 12 In one specific embodiment of this application, the drive mechanism 311 includes a drive shaft 3111, which is rotatably connected inside the second mounting hole 310. A drive gear 3112 is fixedly installed at the inner end of the drive shaft 3111, and a ring-shaped evenly distributed tooth groove 3113 is opened on the drive ring 304 corresponding to the drive gear 3112. A handwheel 3114 is fixedly connected to the outer end of the drive shaft 3111.

[0052] During operation, when it is necessary to fix or disassemble the cable protection tube sample, turn the handwheel 3114. The handwheel 3114 drives the drive shaft 3111 to rotate synchronously in the second mounting hole 310. The inner end of the drive shaft 3111 drives the drive gear 3112 to rotate. The drive gear 3112 meshes with the evenly distributed toothed grooves 3113 on the drive ring 304, thereby driving the drive ring 304 to rotate in the annular groove 303. The drive ring 304, through the cooperation of its spiral protrusion 308 and the spiral groove 307 on the locking rod 306, pushes multiple locking rods 306 to move synchronously centrifugally or centrifugally, thereby achieving the clamping and fixing or unlocking and disassembling of the sample.

[0053] This design employs a transmission structure combining a handwheel 3114 with gear meshing, offering advantages such as simple and intuitive operation. It eliminates the need for complex electrical control components, allowing manual sample fixation and disassembly. The meshing transmission between the drive gear 3112 and the annularly distributed toothed grooves 3113 ensures smooth rotation and uniform force distribution of the drive ring 304, thereby enabling the multiple locking rods 306 to move synchronously. This ensures symmetrical force distribution during sample fixation, preventing measurement accuracy from being affected by fixation deviations. Furthermore, the simple component connection method of the drive mechanism, combined with the detachable end cap 312, facilitates subsequent inspection and maintenance.

[0054] Please refer to the above as well. Figures 1 to 12In one specific embodiment of this application, the cover assembly 400 includes a cover plate 401 slidably connected to the frame 100 and located on the top surface of the test chamber 101. A sealing ring 402 is fixedly installed on the bottom surface of the cover plate 401 corresponding to the top surface of the test chamber 101. A connecting seat 403 is fixedly installed on the top surface of the cover plate 401. A third telescopic member 404 is fixedly installed on the frame 100 corresponding to the connecting seat 403. The telescopic end of the third telescopic member 404 is fixedly connected to the connecting seat 403. The third telescopic member 404 is electrically connected to the control system 800.

[0055] During operation, when the test chamber 101 needs to be sealed for testing, the control system 800 controls the third telescopic component 404 to move. Its telescopic end, via the connecting seat 403, drives the cover plate 401 to slide along the frame 100 until the cover plate 401 covers the top surface of the test chamber 101. At this time, the sealing ring 402 on the bottom surface of the cover plate 401 is tightly fitted with the top surface of the test chamber 101, achieving a seal. After testing is completed, the control system 800 controls the third telescopic component 404 to reverse its movement, causing the cover plate 401 to slide away from the test chamber 101, opening the chamber to remove the tested sample.

[0056] This design utilizes a third telescopic component 404 to drive the automatic opening and closing structure of the cover plate 401, eliminating the need for manual opening and closing of the cover and improving the automation level and operational efficiency of the equipment. By setting a sealing ring 402 on the bottom surface of the cover plate 401, the sealing performance of the test chamber 101 can be enhanced, preventing leakage of corrosive media and heat loss inside the chamber, ensuring the stability of the testing environment for corrosion simulation and temperature simulation, and thus improving the accuracy of the test results. The sliding connection installation method of the cover plate 401 ensures smooth and stable opening and closing, avoiding jamming, and also facilitates the inspection and replacement of the sealing ring 402.

[0057] Please refer to the above as well. Figures 1 to 12 In one specific embodiment of this application, the first telescopic member 102, the second telescopic member 104, and the third telescopic member 404 are all hydraulic cylinders. The hydraulic cylinders are connected to hydraulic pumps, and an electric control valve is installed between the hydraulic pump and each hydraulic cylinder. The electric control valve is electrically connected to the control system 800.

[0058] During operation, the operator inputs action commands through the control panel 803 of the control system 800. After receiving the commands, the controller 801 sends electrical signals to the electro-hydraulic valves between the hydraulic pump and each hydraulic cylinder. The electro-hydraulic valves open or close according to the signals, controlling the hydraulic oil output by the hydraulic pump to flow in a directed manner into the hydraulic cylinders corresponding to the first telescopic member 102, the second telescopic member 104, or the third telescopic member 404, pushing the piston rod of the hydraulic cylinder to extend or retract, thereby driving the pressure detection component 200 and the sample fixing component 300 to rise and fall, the detection execution component 500 to rise and fall, and the cover plate 401 of the box cover component 400 to slide open and close. When each component moves to the preset position, the controller 801 controls the electro-hydraulic valves to close, keeping the hydraulic oil pressure in the hydraulic cylinders stable, so that the components are maintained in the target position and the corresponding actions are completed.

[0059] This design, by employing a drive structure consisting of a hydraulic cylinder, a hydraulic pump, and an electrically controlled valve, combined with electrical signal control from the 800 control system, boasts advantages such as strong and stable driving force, high motion precision, and a high degree of automation.

[0060] Specifically, the hydraulic cylinder outputs a large and stable driving force, which can meet the pressure output requirements of the 500-stage pressure test of the testing and execution components, as well as the stable drive of each heavy component; the precise opening and closing of the solenoid valves can achieve precise control of the extension and retraction of the hydraulic cylinders, ensuring the accurate movement position of each component and improving the stability of the testing process; through the centralized control of each solenoid valve by the control system 800, there is no need for manual operation of the hydraulic cylinders, further improving the automation level of the equipment. At the same time, the hydraulic drive method has a low failure rate and long service life, reducing the maintenance cost of the equipment.

[0061] Please refer to the above as well. Figures 1 to 12In one specific embodiment of this application, the detection execution component 500 includes a rotating body 501. A connecting shaft 502 is coaxially fixedly connected to the top end of the rotating body 501. A insertion hole is provided on the top of the connecting shaft 502 corresponding to the telescopic end of the second telescopic member 104. The connecting shaft 502 is rotatably connected to the telescopic end of the second telescopic member 104 through the insertion hole. A torsion spring 503 is installed between the connecting shaft 502 and the telescopic end of the second telescopic member 104. A limit pin 504 is fixedly connected to the outer side of the connecting shaft 502 near its top. A limit sleeve 505 is fixedly installed on the mounting bracket 103 and fitted onto the connecting shaft 502. A spiral groove 506 is provided on the inner side of the limit sleeve 505 corresponding to the limit pin 504. The side is fitted with an installation sleeve 507. The inner wall of the installation sleeve 507 is fixedly connected to a limit post 508. The rotating body 501 has a limit groove 509 that passes through both ends of the limit post 508. The two sides of the limit groove 509 are respectively set as a vertical surface 5091 and a spiral surface 5092. A vertically arranged slide rail 510 is fixedly installed on the mounting bracket 103. A slider 511 is fixedly installed on the outer side of the installation sleeve 507 corresponding to the slide rail 510. A test head mounting seat 512 is fixedly connected to the bottom of the installation sleeve 507. A mounting rod 513 is fixedly connected to the bottom of the test head mounting seat 512. Several counterweights 514 are detachably mounted on the mounting rod 513. A test head 515 is detachably installed at the bottom of the mounting rod 513.

[0062] During operation, the 500 test execution component can be adapted to both pressure testing and drop hammer impact testing. The initial position of the second telescopic component 104 is the centered state with half of its extension extended, and the initial position of the mounting sleeve 507 is the lower limit position after the drop hammer. Before testing, the control system 800 controls the second telescopic component 104 to extend downward. The second telescopic component 104 will drive the connecting shaft 502 and the rotating body 501 to move downward synchronously. When the rotating body 501 approaches the mounting sleeve 507, the limiting post 508 on the inner wall of the mounting sleeve 507 will slide relative to each other on the spiral surface 5092, causing the rotating body 501 to rotate during the downward movement, thereby causing the torsion spring 503 to twist and store force. When the rotating body 501 moves down to a position where its top surface is lower than the limiting post 508, the torsion spring 503 will release the torsional force to drive the rotating body 501 to rotate, thereby causing the limiting post 508 to hook onto the top surface of the rotating body 501. At this time, the control system 800 controls the second telescopic component 104 to retract upward to the initial position, in preparation for subsequent testing.

[0063] When conducting a compression test, the second telescopic component 104 is extended downwards by the control system 800, which drives the connecting shaft 502 and the rotating body 501 to move downwards synchronously. During the downward movement, the mounting sleeve 507 moves vertically along the slide rail 510 via the slider 511. The lower end of the rotating body 501 pushes the test head mounting seat 512. The test head mounting seat 512 drives the mounting rod 513, the counterweight 514, and the test head 515 to maintain a stable vertical downward pressure state, applying uniform pressure to the sample. The pressure data is fed back to the control system 800 in real time by the pressure detection component 200, thus completing the compression performance test.

[0064] During the drop hammer impact test, the control system 800 controls the second telescopic component 104 to retract upwards, causing the connecting shaft 502 and the rotating body 501 to move upwards. The rotating body 501, through the latching limit post 508 on its top surface, drives the mounting sleeve 507, test head mounting seat 512, mounting rod 513, counterweight 514, and test head 515 to move upwards as a whole. When the connecting shaft 502 approaches the limit sleeve 505, the limit pin 504 on the connecting shaft 502 will enter the spiral groove 506 inside the limit sleeve 505 and slide along it, thereby guiding the connecting shaft. 502 and rotating body 501 rotate, while compressing torsion spring 503 to store torque; when rotating body 501 rotates to the position where limiting groove 509 is aligned with limiting post 508, limiting post 508 will fall directly through the vertical surface 5091 of limiting groove 509, thereby causing mounting sleeve 507, test head mounting seat 512, mounting rod 513, counterweight block 514, and test head 515 to be released and fall instantly, applying instantaneous impact pressure to the sample. The pressure data is fed back to control system 800 in real time by pressure detection component 200, completing the impact performance test.

[0065] This design, through the linkage structure of rotating body 501, limiting groove 509, limiting post 508, torsion spring 503, limiting pin 504, and spiral groove 506, combined with the drive control of the second telescopic component 104, achieves integrated compression testing and drop hammer impact testing, eliminating the need for additional replacement of testing components and effectively improving the equipment's testing efficiency. By setting a detachable counterweight 514 and test head 515, the impact force and test head type can be flexibly adjusted to adapt to the testing requirements of different specifications of cable protection pipes, enhancing the equipment's capabilities. The test head 515 is vertically and stably pressed down during the compression test by means of the guide rail 510 and slider 511 and the constraint of the vertical surface 5091 of the limiting groove 509, so that the sample is subjected to uniform force and the accuracy of the test data is improved. The torsional force storage of the torsion spring 503 and the buckle release structure of the limiting post 508 are used to achieve precise control of the drop hammer impact, which improves the repeatability and stability of the impact test. The whole process is automatically controlled by the control system 800, which reduces manual operation steps and reduces human error.

[0066] It is understood that in other specific embodiments of this application, the two sides of the limiting groove 509 can be respectively set as a vertical surface and an inclined surface. The inclined surface can be used to guide the rotating body 501 to rotate during the downward movement, so that the limiting post 508 can be fastened to the top surface of the rotating body 501; the vertical surface can be used to complete the release and falling.

[0067] It is understood that in other specific embodiments of this application, two symmetrically arranged inclined surfaces can be provided on both sides of the limiting groove 509. The rotating body 501 can be guided to rotate during the downward movement by using either of the symmetrically arranged inclined surfaces, so that the limiting post 508 can be fastened to the top surface of the rotating body 501. The release and falling can be completed directly by using the empty space in the middle of the two symmetrically arranged inclined surfaces.

[0068] Please refer to the above as well. Figures 1 to 12 In one specific embodiment of this application, the test head 515 is made of high-strength alloy steel with a hardness ≥ HRC55.

[0069] During operation, when conducting pressure tests, the test head 515 directly contacts the cable protection pipe sample, receiving the pressure transmitted by the mounting rod 513 and the counterweight 514 and applying it evenly to the sample surface; when conducting drop hammer impact tests, the test head 515 falls freely with the mounting sleeve 507 and the counterweight 514, and experiences a sudden and powerful impact with the sample. Its high-strength alloy steel material and hardness characteristics of ≥HRC55 ensure that it maintains its original shape under high pressure and impact loads, without deformation or damage.

[0070] This design, employing a test head 515 made of high-strength alloy steel with a hardness ≥ HRC55, offers advantages such as ensuring stable testing accuracy, extending component lifespan, and adaptability to various high-intensity testing conditions. Specifically, the high hardness prevents deformation and wear of the test head 515 during repeated pressure and impact tests, preventing uneven pressure transmission or impact force deviations caused by test head deformation, thus improving the accuracy of test data. The high-strength alloy steel balances hardness and toughness, capable of withstanding the instantaneous force of drop hammer impacts, reducing the replacement frequency of the test head 515 and lowering equipment maintenance costs. Simultaneously, it can adapt to the high-intensity testing requirements of different specifications of cable protection pipes, enhancing the applicability of the equipment.

[0071] Please refer to the above as well. Figures 1 to 12In one specific embodiment of this application, the corrosion simulation component 600 includes a storage tank 601 fixedly installed in the frame 100. The storage tank 601 stores a corrosive liquid. A tank cover 602 is installed on the top of the storage tank 601. A delivery pump 603 is fixedly installed on the tank cover 602. An input pipe 604 is fixedly connected to the input end of the delivery pump 603. The input pipe 604 extends into the storage tank 601. An output pipe 605 is fixedly connected to the output end of the delivery pump 603. A water distribution pipe 606 is connected to the output pipe 605. Several parallel spray pipes 607 are fixedly connected to the water distribution pipe 606. The spray pipes 607 are fixedly and sealed to the test chamber 101. A nozzle 608 is installed on the spray pipe 607 corresponding to the sample fixing component 300. A recovery pipe 609 is fixedly and sealed to the bottom of the test chamber 101. The recovery pipe 609 is connected to the storage tank 601. The delivery pump 603 is electrically connected to the control system 800.

[0072] During operation, when a simulated corrosive environment is required to test cable protection pipe samples, the control system 800 controls the start of the delivery pump 603. The delivery pump 603 draws the stored corrosive liquid from the storage tank 601 through the input pipe 604. The corrosive liquid is delivered to the distribution pipe 606 through the output pipe 605, and then evenly distributed to each of the parallel spray pipes 607. Finally, it is precisely sprayed onto the sample surface on the sample fixing component 300 in the test chamber 101 through the nozzles 608 on the spray pipes 607, creating a stable corrosion test environment. During or after the test, the residual corrosive liquid in the test chamber 101 flows back to the storage tank 601 through the bottom recovery pipe 609, realizing the recycling of the corrosive liquid. The cover 602 on the top of the storage tank 601 can prevent the corrosive liquid from evaporating and leaking out.

[0073] This design utilizes a circulation structure consisting of a storage tank 601, a delivery pump 603, and a recovery pipe 609 to achieve the recycling of the corrosive solution, reducing the cost of testing consumables. By setting up several parallel spray pipes 607 and nozzles 608, the corrosive solution can evenly cover the sample surface, simulating a corrosion environment that more closely resembles actual working conditions and improving the accuracy of corrosion performance testing results. The electrical connection between the control system 800 and the delivery pump 603 enables automated start-up, shutdown, and control of the corrosion environment, reducing manual operation steps. The tank cover 602 effectively prevents the corrosive solution from evaporating and impurities from entering the storage tank, improving equipment safety and ensuring the purity of the corrosive solution.

[0074] Please refer to the above as well. Figures 1 to 12In one specific embodiment of this application, the temperature simulation component 700 includes a heater 701, which is connected to an air supply pipe 702. The other end of the air supply pipe 702 is fixedly and sealed to a test chamber 101 near its top. A temperature sensor 703 is fixedly installed on the end of the test chamber 101 away from the air supply pipe 702. An air outlet 704 is provided on the end of the test chamber 101 away from the air supply pipe 702. Both the heater 701 and the temperature sensor 703 are electrically connected to the control system 800.

[0075] During operation, when a specific temperature environment needs to be simulated for testing cable protection pipe samples, the control system 800 controls the heater 701 to start. The hot air generated by the heater 701 is delivered to the inside of the test chamber 101 through the air supply pipe 702. The temperature sensor 703 inside the test chamber 101 monitors the temperature inside the chamber in real time and feeds the temperature signal back to the control system 800. When the temperature inside the chamber reaches the preset test value, the control system 800 adjusts the working power or start / stop status of the heater 701 to maintain a stable temperature inside the chamber. The air outlet 704 on the test chamber 101 enables air circulation inside the chamber, avoiding excessively high local temperatures or large temperature differences, ensuring a uniform temperature environment, and providing stable temperature simulation conditions for the samples.

[0076] This design, through the use of a heater 701 and a temperature sensor 703 combined with a closed-loop control structure of the control system 800, can accurately adjust and maintain the temperature inside the test chamber 101, simulating the high-temperature conditions in actual use of cable protection pipes, thus improving the authenticity and reference value of the test results. The layout of directional air supply through the air supply duct 702 and auxiliary exhaust through the air outlet 704 ensures uniform temperature distribution inside the chamber, avoiding the impact of local temperature differences on test accuracy. The entire temperature adjustment process is automatically controlled by the control system 800, reducing manual intervention and improving test efficiency. At the same time, the component structure is simple and the component connection method is clear, facilitating subsequent inspection and maintenance.

[0077] Please refer to the above as well. Figures 1 to 12 In one specific embodiment of this application, the control system 800 includes a controller 801, a display screen 802 and a control panel 803. The controller 801 is electrically connected to the first telescopic member 102, the second telescopic member 104, the pressure detection component 200, the third telescopic member 404 in the cover assembly 400, the corrosion simulation component 600 and the temperature simulation component 700.

[0078] During operation, the operator inputs various test parameters through the control panel 803, such as the pressure threshold for the pressure resistance test, the height parameter for the drop hammer impact test, the duration and spray rate for the corrosion simulation, and the target temperature for the temperature simulation. After receiving and parsing these instructions, the controller 801 sends action signals to the first telescopic component 102, the second telescopic component 104, the cover assembly 400, the corrosion simulation component 600, and the temperature simulation component 700, controlling each component to complete a series of operations according to a preset sequence, including sample position adjustment, test chamber sealing, corrosion environment creation, temperature environment adjustment, and test execution. At the same time, the pressure data collected by the pressure detection component 200 and the temperature data collected by the temperature sensor 703 in the temperature simulation component 700 are fed back to the controller 801 in real time. After processing the data, the controller 801 displays the test progress, various data curves, and test results in real time on the display screen 802. When the test reaches the preset conditions, the controller 801 automatically controls each component to reset, completing the testing process.

[0079] This design utilizes an integrated control system consisting of a controller 801, a display screen 802, and a control panel 803 to achieve centralized control of all functional components of the equipment. This system offers advantages such as improving the level of automation in testing, reducing human error, and increasing testing efficiency.

[0080] Specifically, the centralized control mode avoids the cumbersome operation of each component individually and ensures precise connection between each step; real-time data visualization makes it easy for operators to monitor the test status throughout the process, and promptly detect and handle anomalies; the unified parameter input interface can quickly switch between different test conditions such as pressure resistance, impact, corrosion, and temperature, enhancing the versatility and flexibility of the equipment.

[0081] The implementation principle of a performance testing device for cable protection pipes according to an embodiment of this application is as follows: The operator first places the cable protection tube sample to be tested into the center hole 302 of the fixing seat 301 of the sample fixing assembly 300, and rotates the handwheel 3114. The drive shaft 3111 drives the drive gear 3112 to rotate. The drive gear 3112 meshes with the annular tooth groove 3113 on the drive ring 304, causing the drive ring 304 to rotate in the annular groove 303. With the help of the cooperation between the spiral protrusion 308 on the drive ring 304 and the spiral groove 307 on the locking rod 306, multiple locking rods 306 move synchronously towards the center, and the pad 309 presses against the outer wall of the sample, thus completing the stable fixing of the sample.

[0082] Subsequently, the operator inputs test parameters through the control panel 803 of the control system 800, including the pressure threshold for the pressure resistance test, the height parameter for the drop hammer impact test, the duration and spray rate of the corrosion simulation, and the target temperature for the temperature simulation. The controller 801 receives and parses the parameter instructions to prepare for subsequent tests.

[0083] If the testing requirements include corrosion and high-temperature environment simulation, the controller 801 controls the third telescopic component 404 to move, causing the cover plate 401 to slide along the frame 100, and the sealing ring 402 to fit tightly against the top surface of the test chamber 101, thus sealing the test chamber; simultaneously, the delivery pump 603 of the corrosion simulation component 600 is started, and the corrosive liquid in the storage tank 601 is drawn through the input pipe 604, and distributed to each spray pipe 607 through the output pipe 605 and the water distribution pipe 606, and then precisely sprayed onto the sample surface by the nozzle 608. A corrosive environment is created, and the residual corrosive liquid after testing flows back to the storage tank 601 via the recovery pipe 609 for recycling. The heater 701 of the temperature simulation component 700 is activated, and hot air is sent into the test chamber 101 through the air supply pipe 702. The temperature sensor 703 collects the temperature data inside the chamber in real time and feeds it back to the controller 801. The controller 801 adjusts the working power of the heater 701 according to the feedback to maintain a stable temperature inside the chamber. The air outlet 704 ensures air circulation inside the chamber and avoids local temperature differences from affecting the detection accuracy.

[0084] Before the formal test, the control system 800 controls the second telescopic component 104 to extend downward, causing the connecting shaft 502 and the rotating body 501 to move downward synchronously. The limiting post 508 on the inner wall of the mounting sleeve 507 slides along the spiral surface 5092 of the upper limit groove 509 of the rotating body 501, causing the rotating body 501 to rotate and the torsion spring 503 to store force. When the top surface of the rotating body 501 is lower than the limiting post 508, the torsion spring 503 resets and causes the rotating body 501 to rotate in the opposite direction, so that the limiting post 508 is fastened to the top surface of the rotating body 501. Then, the second telescopic component 104 is controlled to retract to the initial position, completing the pre-test force storage of the test execution component 500.

[0085] During the pressure test, the controller 801 controls the second telescopic component 104 to extend downwards, driving the connecting shaft 502 and the rotating body 501 to move downwards. The mounting sleeve 507 moves vertically along the slide rail 510 via the slider 511. The rotating body 501 pushes the test head mounting seat 512, causing the test head 515 to press down on the sample smoothly. The pressure is transmitted sequentially to the mounting seat 206 and the piston rod 205, pushing the piston body 203 to slide in a sealed manner within the piston cylinder 202, squeezing the oil in the cylinder. The oil transmits the pressure to the pressure sensor 209 through the oil pressure pipe 207 and the oil pressure hose 208. The pressure sensor 209 converts the pressure signal into an electrical signal and feeds it back to the controller 801. The display screen 802 displays the pressure data in real time. The pressure application stops when the preset pressure threshold is reached.

[0086] During the drop hammer impact test, the controller 801 controls the second telescopic component 104 to retract upwards, causing the connecting shaft 502 and the rotating body 501 to move upwards. The rotating body 501, through the latching limit post 508, causes the mounting sleeve 507, counterweight 514, test head 515, and other components to move upwards as a whole. When the connecting shaft 502 approaches the limit sleeve 505, the limit pin 504 enters the spiral groove 506 and slides along the groove, causing the connecting shaft 502 and the rotating body 501 to rotate. The torsion spring 503 twists again to store force. When the rotating body 501 rotates until the limit groove 509 is aligned with the limit post 508, the limit post 508 falls along the vertical surface 5091 of the limit groove 509. The mounting sleeve 507 causes the test head 515 and counterweight 514 to fall freely, applying instantaneous impact pressure to the sample. The pressure detection component 200 collects the impact pressure data in real time and feeds it back to the control system 800.

[0087] During the test, if it is necessary to adjust the vertical position of the sample in the test chamber 101, the controller 801 can control the extension and retraction of the first telescopic component 102, which will drive the bearing plate 201, pressure detection component 200, and sample fixing component 300 to rise and fall synchronously to adapt to the position requirements of different test conditions.

[0088] After the test is completed, the controller 801 controls each component to automatically reset: shuts down the corrosion simulation component 600 and the temperature simulation component 700, controls the third telescopic component 404 to open the cover plate 401, rotates the handwheel 3114 in the opposite direction to release the sample fixation, and the operator takes out the tested sample to complete the entire cable protection pipe performance test process.

[0089] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A performance testing device for cable protection pipes, characterized in that: The system includes a frame (100), inside which a test chamber (101) is fixedly installed. A first telescopic component (102) is installed on the frame (100) at the bottom of the test chamber (101). The telescopic end of the first telescopic component (102) slides through the test chamber (101) and is sealed and slidably inserted. A pressure detection component (200) is fixedly installed inside the test chamber (101). A sample fixing component (300) is fixedly installed on the pressure detection component (200). A box cover component (400) is installed on the frame (100) at the top of the test chamber (101). A mounting bracket (103) is fixedly installed on the top of the frame (100). A second telescopic component (104) is installed on the sample fixing component (300) corresponding to the sample fixing component (300). The telescopic end of the second telescopic component (104) is equipped with a detection execution component (500) for drop hammer impact test and pressure test. A corrosion simulation component (600) and a temperature simulation component (700) are connected on the test box (101). A control system (800) is installed inside the mounting frame (103) and is electrically connected to the first telescopic component (102), the second telescopic component (104), the pressure detection component (200), the box cover component (400), the corrosion simulation component (600) and the temperature simulation component (700).

2. The performance testing equipment for cable protection pipes according to claim 1, characterized in that: The pressure detection assembly (200) includes a support plate (201) fixedly installed on the telescopic end of the first telescopic member (102). At least two piston cylinders (202) are fixedly installed on the support plate (201). Each piston cylinder (202) has a piston body (203) slidably connected inside it. A cylinder cover (204) is detachably and slidably installed on the top of each piston cylinder (202). A piston rod (205) is slidably connected to the cylinder cover (204). The bottom end of the piston rod (205) is connected to the piston body (203). 203) Fixed connection: The top end of the piston rod (205) is fixedly connected to a mounting base (206), the sample fixing assembly (300) is fixedly installed on the mounting base (206), and the piston cylinder (202) is fixedly and sealed with oil pressure pipes (207). All the oil pressure pipes (207) are sealed and connected to a single oil pressure hose (208), and the oil pressure hose (208) is sealed and connected to a pressure sensor (209). The pressure sensor (209) is electrically connected to the control system (800).

3. The performance testing equipment for cable protection pipes according to claim 1, characterized in that: The sample fixing assembly (300) includes a fixing seat (301) fixedly mounted on the pressure detection assembly (200). A central hole (302) is provided at the center of the fixing seat (301) corresponding to the sample of the cable protection tube. An annular groove (303) is provided around the central hole (302) on the fixing seat (301). A driving ring (304) is slidably connected inside the annular groove (303). Multiple centrally symmetrical first mounting holes (305) are provided on the sidewall of the central hole (302). The first mounting holes (305) penetrate the annular groove (303), and a locking rod (306) is slidably connected inside the first mounting holes (305). The locking rod (306) has a locking rod... The drive ring (304) has a spiral groove (307) and a spiral protrusion (308) corresponding to the groove (307). The locking rod (306) and the drive ring (304) are connected by the groove (307) and the protrusion (308) for transmission. A pad (309) is fixedly connected to one end of the locking rod (306) facing the center hole (302). The fixing seat (301) has a second mounting hole (310) that passes through the ring groove (303). A drive mechanism (311) that is rotatably connected to the drive ring (304) is rotatably connected inside the second mounting hole (310).

4. The performance testing equipment for cable protection pipes according to claim 3, characterized in that: The drive mechanism (311) includes a drive shaft (3111), which is rotatably connected inside the second mounting hole (310). A drive gear (3112) is fixedly installed at the inner end of the drive shaft (3111). A ring-shaped, evenly distributed tooth groove (3113) is opened on the drive ring (304) corresponding to the drive gear (3112). A handwheel (3114) is fixedly connected to the outer end of the drive shaft (3111).

5. The performance testing equipment for cable protection pipes according to claim 1, characterized in that: The cover assembly (400) includes a cover plate (401) slidably connected to the frame (100) and located on the top surface of the test box (101). A sealing ring (402) is fixedly installed on the bottom surface of the cover plate (401) corresponding to the top surface of the test box (101). A connecting seat (403) is fixedly installed on the top surface of the cover plate (401). A third telescopic member (404) is fixedly installed on the frame (100) corresponding to the connecting seat (403). The telescopic end of the third telescopic member (404) is fixedly connected to the connecting seat (403). The third telescopic member (404) is electrically connected to the control system (800).

6. The performance testing equipment for cable protection pipes according to claim 1, characterized in that: The detection execution component (500) includes a rotating body (501), with a connecting shaft (502) coaxially fixedly connected to the top of the rotating body (501). The top of the connecting shaft (502) has a plug hole corresponding to the telescopic end of the second telescopic member (104). The connecting shaft (502) is rotatably connected to the telescopic end of the second telescopic member (104) through the plug hole. A torsion spring (503) is installed between the connecting shaft (502) and the telescopic end of the second telescopic member (104). A limit pin (504) is fixedly connected to the outer side of the connecting shaft (502) near its top. A limit sleeve (505) fitted on the connecting shaft (502) is fixedly installed on the mounting bracket (103). A spiral groove (506) is opened on the inner side of the limit sleeve (505) corresponding to the limit pin (504). The rotating body (501) is fitted with an installation sleeve (507) on its outer side. The inner wall of the installation sleeve (507) is fixedly connected to a limiting post (508). The rotating body (501) is provided with a limiting groove (509) that passes through both ends of the limiting post (508). The mounting bracket (103) is fixedly installed with a vertically arranged slide rail (510). The outer side of the installation sleeve (507) is fixedly installed with a slider (511) corresponding to the slide rail (510). The bottom of the installation sleeve (507) is fixedly connected to a test head mounting seat (512). The bottom of the test head mounting seat (512) is fixedly connected to an installation rod (513). Several counterweights (514) are detachably fitted on the installation rod (513). The bottom of the installation rod (513) is detachably installed with a test head (515).

7. The performance testing equipment for cable protection pipes according to claim 6, characterized in that: The test head (515) is made of high-strength alloy steel with a hardness ≥ HRC55.

8. The performance testing equipment for cable protection pipes according to claim 1, characterized in that: The corrosion simulation component (600) includes a storage tank (601) fixedly installed in the frame (100), the storage tank (601) storing corrosive liquid, a tank cover (602) installed on the top of the storage tank (601), a transfer pump (603) fixedly installed on the tank cover (602), an input pipe (604) fixedly connected to the input end of the transfer pump (603), the input pipe (604) extending into the storage tank (601), and an output pipe (605) fixedly connected to the output end of the transfer pump (603). A water distribution pipe (606) is connected to the water distribution pipe (606), and several spray pipes (607) arranged in parallel are fixedly connected to the water distribution pipe (606). The spray pipes (607) are fixedly and sealed to the test box (101). A nozzle (608) is installed on the spray pipe (607) corresponding to the sample fixing component (300). A recovery pipe (609) is fixedly and sealed to the bottom of the test box (101). The recovery pipe (609) is connected to the liquid storage tank (601). The delivery pump (603) is electrically connected to the control system (800).

9. The performance testing equipment for cable protection pipes according to claim 1, characterized in that: The temperature simulation component (700) includes a heater (701), which is connected to an air supply pipe (702). The other end of the air supply pipe (702) is fixedly and sealed to the test chamber (101) near its top. A temperature sensor (703) is fixedly installed on the end of the test chamber (101) away from the air supply pipe (702). Both the heater (701) and the temperature sensor (703) are electrically connected to the control system (800).

10. A performance testing device for cable protection pipes according to claim 1, characterized in that: The control system (800) includes a controller (801), a display screen (802) and a control panel (803). The controller (801) is electrically connected to the first telescopic member (102), the second telescopic member (104), the pressure detection component (200), the cover assembly (400), the corrosion simulation component (600) and the temperature simulation component (700).

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