Anchoring chain section tension detection device and detection method thereof

Abstract

The application relates to the technical field of anchor chain tension detection, and discloses an anchor chain section tension detection device and a detection method thereof, which comprises a tension detection mechanism, the top end of the tension detection mechanism is connected with a tension control mechanism, and the top end of the tension control mechanism is connected with an anchor chain section control mechanism. Through the arrangement of the tension detection mechanism, the anchor chain to be detected is divided into different conditions under the air reference state, the seawater corrosion state and the intermingled load state for detection, the overall fracture strength index of the anchor chain can be obtained, the tension change, the wave load and the seawater corrosion effect of the anchor chain can be controlled, different service conditions of the anchor chain under the air reference state, the seawater corrosion state and the intermingled load state can be simulated, the mechanical properties of the anchor chain under different states are compared and analyzed, the weak link of the anchor chain can be accurately positioned, the failure mechanism is revealed, and important reference is provided for the maintenance and replacement of the anchor chain.

Description

Technical Field

[0001] This invention belongs to the field of anchor chain tension testing technology, and specifically relates to an anchor chain section tension testing device and its testing method. Background Technology

[0002] As a key load-bearing component connecting the hull and the anchor, the anchor chain's core functions include: establishing the mechanical transmission path of the mooring system, buffering environmental load impacts, and maintaining the anchor's reliable grip on the bottom. A typical anchor chain system consists of anchor end links, transition links, and end links, employing a linked / stuck-less chain structure, with the former being widely used in large ships due to its higher structural strength.

[0003] The marine environment has a multi-dimensional impact on the mechanical properties of anchor chains: seawater accelerates material degradation through electrochemical reactions, buoyancy alters the actual stress distribution, and wave loads introduce dynamic fatigue factors. The coupling effect of these environmental factors leads to significant differences in the mechanical response of anchor chains in air and seawater media, specifically manifested in variations in key parameters such as yield strength reduction, fatigue life shortening, and stress concentration in the interface region.

[0004] In existing technologies, current testing devices lack environmental simulation capabilities and cannot quantify the threshold of the impact of medium differences on mechanical properties. Traditional testing schemes mainly suffer from three major technical bottlenecks: First, the testing scenarios are limited. Conventional land-based tests can only simulate static tensile loads and cannot reproduce the multi-physics coupling effects of the marine environment. Second, the medium effect is missing. Existing equipment has not established a dynamic corrosion-stress interaction model under seawater media, resulting in a systematic deviation between the test data and the actual service conditions. Third, the failure mechanism analysis is insufficient. Traditional testing can only obtain overall fracture strength indicators and cannot analyze the local failure characteristics of different service areas such as the air / seawater interface zone and the fully submerged zone, and cannot accurately locate weak points.

[0005] Therefore, it is necessary to invent a tension testing device and method for anchor chain segments to solve the above problems. It can realize comparative analysis of the mechanical properties of anchor chain materials under air reference state, seawater corrosion state and fusion load state, and accurately locate weak links. Summary of the Invention

[0006] To address the aforementioned problems, this invention provides an anchor chain segment tension testing device and method, thereby resolving the issues raised in the background section.

[0007] To achieve the above objectives, the present invention provides the following technical solution: an anchor chain segment tension detection device and its detection method, comprising a tension detection mechanism, wherein a tension control mechanism is connected to the top end of the tension detection mechanism, and an anchor chain segment control mechanism is connected to one end of the top of the tension control mechanism, wherein...

[0008] The tensile testing mechanism includes a testing protective box. A positioning groove is provided at one end of the top of the testing protective box. A hydraulic cylinder is fixedly provided on the inner wall of the positioning groove. A tensile control frame is fixedly provided at the output end of the hydraulic cylinder. Limiting strips are fixedly provided on both sides of the tensile control frame. Limiting grooves are provided at one end of both sides of the testing protective box. The tensile control frame is slidably connected to the limiting grooves through the limiting strips.

[0009] A sliding frame is fixedly provided on the other side of the detection and protection box. A sliding groove is provided on one side of the sliding frame. A positioning screw is rotatably provided in the middle position of the sliding frame. A lifting seat is threaded on the outer wall of the positioning screw. An anchor chain is connected to one end of the lifting seat. A first motor is fixedly provided at the top of the sliding frame. The output end of the first motor is fixedly connected to the top of the positioning screw.

[0010] Electrode plates are fixedly installed at both ends of the bottom of the inner wall of the detection protective box.

[0011] Preferably, balance bars are fixedly provided at both ends of one side of the tension control frame, and balance grooves are provided at both ends of the top of one side of the detection protection box. One end of the outer wall of the two balance bars is slidably connected to the inner wall of the two balance grooves respectively.

[0012] Preferably, the tension control mechanism includes a tension control frame, a fixed lead screw is rotatably provided at the middle position of the tension control frame, one end of the outer wall of the fixed lead screw is threadedly connected to the middle position of the tension control frame, a fixed frame is fixedly provided at one end of the tension control frame, a second motor is fixedly provided at the middle position of the fixed frame, the output end of the second motor is fixedly connected to one end of the fixed lead screw, and movable slots are provided on both sides of the top of the tension control frame, and the two ends of the tension control frame are slidably connected to the top of the tension control frame through the movable slots.

[0013] Preferably, the tension control mechanism further includes a support frame fixed to one end of the top of the tension control frame. The top of the support frame is rotatably equipped with an anchor chain winding frame. Both ends of the outer wall of the anchor chain winding frame are fixed with protective rings. One end of the support frame is fixed with a drive motor. The output end of the drive motor is fixedly connected to one end of the anchor chain winding frame. The other end of the anchor chain is wound up through the anchor chain winding frame.

[0014] Preferably, the anchor chain segment control mechanism includes a positioning seat fixed to the other end of the top of the tension control frame, a rotation control frame rotatably mounted at the middle position of the positioning seat, a fixed seat fixed at one end of the bottom of the rotation control frame, an adjusting screw rotatably mounted at the middle position of the fixed seat, a movable seat threaded onto one end of the outer wall of the adjusting screw, a movable frame fixed at one end of the top of the movable seat, a through groove opened at one end of the rotation control frame, a connecting frame fixedly mounted through the through groove at one end of the movable frame, three through shafts fixedly mounted at one end of the connecting frame, a third motor fixedly mounted on one side of the fixed seat, and the output end of the third motor fixedly connected to one end of the adjusting screw.

[0015] Preferably, three support seats are fixedly provided at both ends of the top of the rotation control frame, and the two ends of the three through shafts correspond to the positions of the six support seats respectively.

[0016] Preferably, a bionic mechanism is connected to the bottom end of the inner wall of the detection protective box. The bionic mechanism includes stirring wheels rotating at both ends of the bottom of the inner wall of the detection protective box. The bottom ends of the two stirring wheels are fixedly connected to sprockets through the detection protective box. The outer walls of the two sprockets are connected by a chain drive. A groove is formed in the middle of the bottom of the detection protective box. The two sprockets and the chain are located inside the groove. A connecting shaft is fixedly connected to the top of one of the stirring wheels. A support platform is fixedly connected to one end of the inner wall of the detection protective box. A first helical gear is rotatably connected to the middle of one side of the support platform. A second helical gear is rotatably connected to the middle of the top of the support platform. The tooth surfaces of the first helical gear mesh with the tooth surfaces of the second helical gear. The top end of the connecting shaft passes through the support platform and is fixedly connected to the bottom end of the second helical gear. A fourth motor is fixedly connected to one side of the detection protective box. A fixed shaft is fixedly connected to the output end of the fourth motor. One end of the fixed shaft passes through the support platform and is fixedly connected to one end of the first helical gear.

[0017] Preferably, a positioning gear is fixedly provided at the bottom end of one of the stirring wheels, a positioning rack is meshed on the tooth surface of the positioning gear, a wave-making plate is fixedly provided at one end of the positioning rack, a balance frame is fixedly provided at one end of the wave-making plate, one side of the balance frame contacts one side of the positioning gear, a sliding strip is fixedly provided at the bottom end of the inner wall of the detection and protection box, and the bottom end of the wave-making plate slides in contact with the top end of the sliding strip.

[0018] Preferably, an intelligent control panel is fixedly provided on one side of the detection and protection box, and the first motor, second motor, third motor, fourth motor, drive motor and hydraulic cylinder are all electrically connected to an external power supply through the intelligent control panel.

[0019] A preferred method for detecting the tensile force of a fixed section of anchor chain is as follows:

[0020] Step 1: After pulling out the end of the anchor chain a certain distance, position it at one end of the lifting seat. The output end of the drive motor fixed at one end of the support frame drives the anchor chain winding frame to rotate, thereby controlling the length of the anchor chain. Position the other force-bearing end of the anchor chain at the top of the rotation control frame. The output end of the third motor fixed on one side of the fixed seat drives the adjusting screw to rotate, causing the moving seat at one end of the adjusting screw threaded to the outer wall to move the moving frame and the connecting frame. This allows the insert shaft connected to one side of the connecting frame to pass through the hole in the anchor chain. At the same time, the two ends of the insert shaft are squeezed against the support seat to assist in bearing the force, thus completing the preparation work for the anchor chain tension test.

[0021] Step 2: Fill the protective test chamber with seawater until the seawater level is flush with the support platform. Then, energize the electrode plates through an external power supply to initiate an electrolytic reaction.

[0022] Step 3: The output end of the first motor fixed at the top of the sliding frame drives the positioning screw to rotate, so that the lifting seat threaded on the outer wall of the positioning screw passes through the sliding groove and drives the fixed end of the anchor chain to rise and fall to the corresponding position, so that the anchor chain segment to be tested is about to be taut.

[0023] Step 4: The output end of the fourth motor fixed on one side of the detection and protection box drives the fixed shaft to rotate back and forth, which in turn drives the first helical gear to rotate. The teeth of the first helical gear mesh with the teeth of the second helical gear, which in turn drives one of the stirring wheels to rotate through the connecting shaft. The sprocket fixed at the bottom of the stirring wheel is connected to the chain for transmission, so that the two stirring wheels rotate synchronously, causing the seawater inside the detection and protection box to rotate. The teeth of the positioning gear fixed at the bottom of one of the stirring wheels mesh with the teeth of the positioning rack, causing the wave-making plate fixed at one end of the positioning rack to slide back and forth along the sliding strip at the bottom of the detection and protection box. The wave-making plate causes the seawater inside the detection and protection box to surge back and forth, so that half of the anchor chain is immersed in the seawater in this environment for a certain period of time.

[0024] Step 5: Simultaneously, the output end of the second motor fixed inside the fixed frame drives the fixed screw to rotate, causing the tension control frame threaded to the outer wall of the fixed screw to move, so that the tension control frame slides along the top of the tension control frame and drives the anchor chain to perform tension control, so that the anchor chain is in an environment of constantly changing tension for a certain period of time.

[0025] Step Six: Under the high pressure of the hydraulic cylinder fixed to the top of the testing protective box, the end of the anchor chain to be tested is pulled, causing the output end of the hydraulic cylinder to drive the tension control frame to move. The tension is kept stable by sliding between the limit strips fixed at both ends of the tension control frame and the limit grooves opened on both sides of the testing protective box, so that the anchor chain is pulled until it breaks. The stress value of the anchor chain is obtained, the location of the anchor chain break is observed, and the stress of the anchor chain under the air reference state, seawater corrosion state, and mixed load state is determined.

[0026] The technical effects and advantages of this invention are as follows:

[0027] 1. This invention, through the design of a tensile testing mechanism, allows the anchor chain to be tested under different conditions: air reference state, seawater corrosion state, and mixed load state. This not only obtains the overall fracture strength index of the anchor chain but also simulates different service conditions of the anchor chain under these conditions by controlling changes in anchor chain tension, wave load, and seawater corrosion. By comparing and analyzing the mechanical properties of the anchor chain under different states, this invention can accurately locate the weak points of the anchor chain, reveal its failure mechanism, and provide important reference for the maintenance and replacement of anchor chains.

[0028] 2. This invention simulates the corrosive effect of seawater on anchor chain materials by setting electrode plates in the detection protective box and conducting an electrolytic reaction. Combined with dynamic wave loads, a dynamic corrosion-stress interaction model under seawater is constructed. This design effectively makes up for the shortcomings of existing equipment in considering the medium effect, so that the detection data can more accurately reflect the changes in the mechanical properties of anchor chains in the seawater environment, and provides a scientific basis for the design and material selection of anchor chains.

[0029] 3. This invention innovatively introduces a biomimetic mechanism. Through the design of the stirring wheel and wave-making plate, it can simulate the dynamic wave and water flow effects of the marine environment during the testing process. This allows the anchor chain to be partially immersed in simulated seawater during testing, experiencing mechanical and chemical interactions similar to those in the real marine environment. This improvement solves the problem of the limited testing scenarios in the existing technology, making the test results closer to the actual service condition of the anchor chain.

[0030] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures pointed out in the description, claims and drawings. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the anchor chain section tension detection device of the present invention;

[0033] Figure 2 This is a cross-sectional view of the anchor chain section tension detection device of the present invention.

[0034] Figure 3 This is a schematic cross-sectional view of the anchor chain section tension detection device of the present invention.

[0035] Figure 4 This is a schematic diagram of the tensile testing mechanism of the present invention;

[0036] Figure 5 This is a schematic diagram of the bionic mechanism of the present invention;

[0037] Figure 6 This is a schematic diagram of the tensile testing mechanism of the present invention;

[0038] Figure 7 This is a schematic diagram showing the distribution of the tension control mechanism and the anchor chain segment control mechanism of the present invention;

[0039] Figure 8 This is a schematic diagram of the tension control mechanism of the present invention;

[0040] Figure 9 This is a schematic diagram of the distribution of the anchor chain segment control mechanism of the present invention;

[0041] Figure 10 This is a schematic diagram of the angle of the anchor chain segment control mechanism of the present invention;

[0042] Figure 11 This is a schematic diagram of the second angle of the anchor chain segment control mechanism of the present invention;

[0043] Figure 12 This is a schematic diagram of another state of the anchor chain segment control mechanism of the present invention.

[0044] In the diagram: 1. Tensile testing mechanism; 101. Testing and protective box; 102. Positioning groove; 103. Balancing groove; 104. Limiting groove; 105. Groove; 106. Sliding bar; 107. Sliding frame; 108. Positioning screw; 109. Sliding groove; 110. First motor; 111. Electrode plate; 112. Lifting seat; 113. Hydraulic cylinder; 114. Tensile control frame; 115. Balancing bar; 116. Limiting bar; 2. Anchor chain; 3. Tension control mechanism; 301. Tension control frame; 302. Fixed screw; 303. Moving groove; 304. Fixed frame; 305. Second motor; 306. Support frame; 307. Anchor chain winding frame; 308. Protective ring 309. Drive motor; 4. Anchor chain segment control mechanism; 401. Positioning seat; 402. Rotation control frame; 403. Fixed seat; 404. Adjusting screw; 405. Third motor; 406. Moving seat; 407. Moving frame; 408. Connecting frame; 409. Through shaft; 410. Support seat; 411. Through groove; 5. Bionic mechanism; 501. Stirring wheel; 502. Sprocket; 503. Chain; 504. Positioning gear; 505. Positioning rack; 506. Wavemaker; 507. Balance frame; 508. Connecting shaft; 509. Support platform; 510. First helical gear; 511. Second helical gear; 512. Fixed shaft; 513. Fourth motor. Detailed Implementation

[0045] 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.

[0046] This invention provides, for example Figure 1-12 The diagram illustrates an anchor chain segment tension testing device and its testing method, comprising a tension testing mechanism 1, a tension control mechanism 3 connected to the top of the tension testing mechanism 1, and an anchor chain segment control mechanism 4 connected to one end of the top of the tension control mechanism 3.

[0047] The tensile testing mechanism 1 includes a testing protective box 101. A positioning groove 102 is provided at one end of the top of the testing protective box 101. A hydraulic cylinder 113 is fixedly provided on the inner wall of the positioning groove 102. A tensile control frame 114 is fixedly provided at the output end of the hydraulic cylinder 113. Limiting strips 116 are fixedly provided on both sides of the tensile control frame 114. Limiting grooves 104 are provided at one end of both sides of the testing protective box 101. The tensile control frame 114 is slidably connected to the limiting grooves 104 through the limiting strips 116.

[0048] The anchor chain 2 is pulled under high pressure by the hydraulic cylinder 113 fixed at the top of the detection protection box 101. The output end of the hydraulic cylinder 113 drives the tension control frame 114 to move. The limit strips 116 fixed at both ends of the tension control frame 114 slide with the limit grooves 104 on both sides of the detection protection box 101 to keep the tension stable, so that the anchor chain 2 is pulled until it breaks. The force value of the anchor chain 2 is obtained, the fracture location of the anchor chain 2 is observed, and the force of the anchor chain 2 under the air reference state, seawater corrosion state and fusion load state is determined. The mechanical properties under the air reference state, seawater corrosion state and fusion load state are compared and analyzed to accurately locate the weak link.

[0049] A sliding frame 107 is fixedly provided on the other side of the inspection and protection box 101. A sliding groove 109 is provided on one side of the sliding frame 107. A positioning screw 108 is rotatably provided in the middle position of the sliding frame 107. A lifting seat 112 is threaded on the outer wall of the positioning screw 108. An anchor chain 2 is connected to one end of the lifting seat 112. A first motor 110 is fixedly provided at the top of the sliding frame 107. The output end of the first motor 110 is fixedly connected to the top of the positioning screw 108.

[0050] The output end of the first motor 110 fixed at the top of the sliding frame 107 drives the positioning screw 108 to rotate, so that the lifting seat 112 threaded to the outer wall of the positioning screw 108 passes through the sliding groove 109 and drives the fixed end of the anchor chain 2 to rise and fall to the corresponding position, so that the anchor chain 2 section to be tested tends to be in a state of tension.

[0051] Electrode plates 111 are fixedly installed at both ends of the bottom of the inner wall of the detection protective box 101;

[0052] Seawater is poured into the protective test chamber 101 until the seawater level is the same as the height of the support platform 509. Electrode plates 111 are energized through an external power supply to carry out an electrolytic reaction.

[0053] Balance bars 115 are fixedly installed at both ends of one side of the tension control frame 114, and balance grooves 103 are opened at both ends of the top of one side of the detection protection box 101. One end of the outer wall of the two balance bars 115 is slidably connected to the inner wall of the two balance grooves 103 respectively.

[0054] In one specific embodiment of the present invention, the tension control mechanism 3 includes a tension control frame 301, a fixed screw 302 is rotatably provided at the middle position of the tension control frame 114, one end of the outer wall of the fixed screw 302 is threadedly connected to the middle position of the tension control frame 301, a fixed frame 304 is fixedly provided at one end of the tension control frame 114, a second motor 305 is fixedly provided at the middle position of the fixed frame 304, the output end of the second motor 305 is fixedly connected to one end of the fixed screw 302, and a moving groove 303 is provided on both sides of the top of the tension control frame 114, and the two ends of the tension control frame 301 are slidably connected to the top end of the tension control frame 114 through the moving groove 303;

[0055] The tension control mechanism 3 also includes a support frame 306 fixed to one end of the top of the tension control frame 301. An anchor chain winding frame 307 is rotatably provided at the top of the support frame 306. Protective rings 308 are fixed at both ends of the outer wall of the anchor chain winding frame 307. A drive motor 309 is fixed at one end of the support frame 306. The output end of the drive motor 309 is fixedly connected to one end of the anchor chain winding frame 307. The other end of the anchor chain 2 is wound up through the anchor chain winding frame 307.

[0056] The output end of the second motor 305, which is fixed inside the fixing frame 304, drives the fixing screw 302 to rotate, causing the tension control frame 301, which is threaded to the outer wall of the fixing screw 302, to move. This causes the tension control frame 301 to slide along the top of the tension control frame 114, and drives the anchor chain 2 to be tensioned, so that the anchor chain 2 is in an environment where the tension changes continuously for a certain period of time.

[0057] As a specific embodiment of the present invention, the anchor chain segment control mechanism 4 includes a positioning seat 401 fixed to the other end of the top of the tension control frame 301, a rotation control frame 402 rotatably provided at the middle position of the positioning seat 401, a fixed seat 403 fixedly provided at one end of the bottom of the rotation control frame 402, an adjusting screw 404 rotatably provided at the middle position of the fixed seat 403, a movable seat 406 threaded on one end of the outer wall of the adjusting screw 404, a movable frame 407 fixedly provided at one end of the top of the movable seat 406, a through groove 411 opened at one end of the rotation control frame 402, a connecting frame 408 fixedly provided at one end of the movable frame 407 passing through the through groove 411, three through shafts 409 fixedly provided at one end of the connecting frame 408, a third motor 405 fixedly provided on one side of the fixed seat 403, and the output end of the third motor 405 fixedly connected to one end of the adjusting screw 404;

[0058] Three support seats 410 are fixedly provided at both ends of the top of the rotation control frame 402, and the two ends of the three through shafts 409 correspond to the positions of the six support seats 410 respectively.

[0059] After pulling the end of the anchor chain 2 out a certain distance, it is positioned and installed at one end of the lifting seat 112. The output end of the drive motor 309 fixed to one end of the support frame 306 drives the anchor chain winding frame 307 to rotate. With the protection of the protective ring 308, the length of the anchor chain 2 is controlled. The other force-bearing end of the anchor chain 2 is placed on the top of the rotation control frame 402 for positioning. The output end of the third motor 405 fixed to one side of the fixed seat 403 drives the adjusting screw 404 to rotate. This causes the moving seat 406, which is threaded to one end of the outer wall of the adjusting screw 404, to move the moving frame 407 and the connecting frame 408. This allows the insertion shaft 409 connected to one side of the connecting frame 408 to pass through the hole of the anchor chain 2. At the same time, the two ends of the insertion shaft 409 are squeezed against the support seat 410 to assist in bearing force, thus completing the preparation work for the tension test of the anchor chain 2.

[0060] In one specific embodiment of the present invention, a bionic mechanism 5 is connected to the bottom end of the inner wall of the detection protective box 101. The bionic mechanism 5 includes stirring wheels 501 rotating at both ends of the bottom of the inner wall of the detection protective box 101. The bottom ends of the two stirring wheels 501 are fixedly provided with sprockets 502 through the detection protective box 101. The outer walls of the two sprockets 502 are connected by a chain 503. A groove 105 is provided in the middle of the bottom of the detection protective box 101. The two sprockets 502 and the chain 503 are located inside the groove 105. A connecting shaft 508 is fixedly provided at the top end of one of the stirring wheels 501. A support platform 509 is fixedly provided at one end of the wall. A first helical gear 510 is rotatably provided at the middle position of one side of the support platform 509. A second helical gear 511 is rotatably provided at the middle position of the top of the support platform 509. The tooth surface of the first helical gear 510 meshes with the tooth surface of the second helical gear 511. The top end of the connecting shaft 508 passes through the support platform 509 and is fixedly connected to the bottom end of the second helical gear 511. A fourth motor 513 is fixedly provided on one side of the detection protection box 101. A fixed shaft 512 is fixedly provided at the output end of the fourth motor 513. One end of the fixed shaft 512 passes through the support platform 509 and is fixedly connected to one end of the first helical gear 510.

[0061] One of the stirring wheels 501 has a positioning gear 504 fixedly installed at its bottom end. The tooth surface of the positioning gear 504 meshes with a positioning rack 505. A wave-making plate 506 is fixedly installed at one end of the positioning rack 505. A balance frame 507 is fixedly installed at one end of the wave-making plate 506. One side of the balance frame 507 contacts one side of the positioning gear 504. A sliding strip 106 is fixedly installed at the bottom end of the inner wall of the detection protection box 101. The bottom end of the wave-making plate 506 slides in contact with the top end of the sliding strip 106.

[0062] The output of the fourth motor 513, fixed to one side of the detection protective box 101, drives the fixed shaft 512 to reciprocate, causing the fixed shaft 512 to drive the first helical gear 510 to rotate. The teeth of the first helical gear 510 mesh with the teeth of the second helical gear 511, causing the second helical gear 511 to drive one of the stirring wheels 501 to rotate via the connecting shaft 508. The sprocket 502 fixed to the bottom of the stirring wheel 501 is connected to the chain 503, allowing the two stirring wheels 501 to rotate synchronously, thus controlling the flow of seawater inside the detection protective box 101. The water rotates, and the tooth surface of the positioning gear 504 fixed to the bottom of one of the stirring wheels 501 meshes with the tooth surface of the positioning rack 505, causing the wave-making plate 506 fixed to one end of the positioning rack 505 to slide back and forth along the sliding strip 106 opened at the bottom of the detection protection box 101. The balance frame 507 fixed to one end of the wave-making plate 506 contacts one side of the positioning gear 504, causing the wave-making plate 506 to drive the seawater inside the detection protection box 101 to create waves back and forth, so that half of the length of the anchor chain 2 is immersed in the seawater in this environment for a certain period of time.

[0063] In one specific embodiment of the present invention, an intelligent control panel is fixedly provided on one side of the detection protection box 101. The first motor 110, the second motor 305, the third motor 405, the fourth motor 513, the drive motor 309 and the hydraulic cylinder 113 are all electrically connected to an external power supply through the intelligent control panel.

[0064] As a specific embodiment of the present invention, a method for detecting the tensile force of a fixed section of an anchor chain is as follows:

[0065] Step 1: After pulling the end of the anchor chain 2 out a certain distance, position it at one end of the lifting seat 112. The output end of the drive motor 309 fixed at one end of the support frame 306 drives the anchor chain winding frame 307 to rotate, so that the length of the anchor chain 2 is controlled. The other force-bearing end of the anchor chain 2 is placed at the top of the rotation control frame 402 for positioning. The output end of the third motor 405 fixed on one side of the fixed seat 403 drives the adjusting screw 404 to rotate, so that the moving seat 406 threaded to one end of the outer wall of the adjusting screw 404 drives the moving frame 407 and the connecting frame 408 to move, so that the through shaft 409 connected to one side of the connecting frame 408 passes through the hole of the anchor chain 2. At the same time, the two ends of the through shaft 409 are squeezed with the support seat 410 to assist in the force, thereby completing the preparation work for the tension test of the anchor chain 2.

[0066] Step 2: Fill the test protection box 101 with seawater until the seawater level is the same as the height of the support platform 509. Then, energize the electrode plate 111 through an external power supply to carry out the electrolytic reaction.

[0067] Step 3: The output end of the first motor 110 fixed at the top of the sliding frame 107 drives the positioning screw 108 to rotate, so that the lifting seat 112 threaded to the outer wall of the positioning screw 108 passes through the sliding groove 109 and drives the fixed end of the anchor chain 2 to rise and fall to the corresponding position, so that the anchor chain 2 section to be tested tends to be in a state of tension.

[0068] Step 4: The output end of the fourth motor 513, fixed to one side of the detection and protection box 101, drives the fixed shaft 512 to reciprocate, causing the fixed shaft 512 to drive the first helical gear 510 to rotate. The teeth of the first helical gear 510 mesh with the teeth of the second helical gear 511, causing the second helical gear 511 to drive one of the stirring wheels 501 to rotate via the connecting shaft 508. The sprocket 502 fixed to the bottom of the stirring wheel 501 is connected to the chain 503 for transmission, causing both stirring wheels 501 to rotate simultaneously. The step rotates, causing the seawater inside the detection and protection box 101 to rotate. The tooth surface of the positioning gear 504 fixed at the bottom of one of the stirring wheels 501 meshes with the tooth surface of the positioning rack 505, causing the wave-making plate 506 fixed at one end of the positioning rack 505 to slide back and forth along the sliding strip 106 opened at the bottom of the detection and protection box 101. The wave-making plate 506 drives the seawater inside the detection and protection box 101 to create waves back and forth, so that half of the length of the anchor chain 2 is immersed in the seawater in this environment for a certain period of time.

[0069] Step 5: Simultaneously, the output end of the second motor 305 fixed inside the fixing frame 304 drives the fixing screw 302 to rotate, causing the tension control frame 301 threaded to the outer wall of the fixing screw 302 to move, causing the tension control frame 301 to slide along the top of the tension control frame 114, and driving the anchor chain 2 to perform tension control, so that the anchor chain 2 is in an environment of constantly changing tension for a certain period of time;

[0070] Step Six: Under the high pressure of the hydraulic cylinder 113 fixed at the top of the detection protective box 101, the end of the anchor chain 2 to be tested is pulled, so that the output end of the hydraulic cylinder 113 drives the tension control frame 114 to move. The limit strips 116 fixed at both ends of the tension control frame 114 slide with the limit grooves 104 opened on both sides of the detection protective box 101 to keep the tension stable, so that the anchor chain 2 is pulled until it breaks. The force value of the anchor chain 2 is obtained, the breakage position of the anchor chain 2 is observed, and the force condition of the anchor chain 2 under the air reference state, seawater corrosion state and fusion load state is determined.

[0071] like Figure 2 As shown, this is the state of anchor chain 2 under tension test in a fully air reference state.

[0072] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tension testing device for a fixed section of anchor chain, comprising a tension testing mechanism (1), characterized in that: The top of the tensile testing mechanism (1) is connected to a tension control mechanism (3), and one end of the top of the tension control mechanism (3) is connected to an anchor chain segment control mechanism (4). The tensile testing mechanism (1) includes a testing protective box (101). A positioning groove (102) is provided at one end of the top of the testing protective box (101). A hydraulic cylinder (113) is fixedly provided on the inner wall of the positioning groove (102). A tensile control frame (114) is fixedly provided at the output end of the hydraulic cylinder (113). Limiting strips (116) are fixedly provided on both sides of the tensile control frame (114). Limiting grooves (104) are provided at one end of both sides of the testing protective box (101). The tensile control frame (114) is slidably connected to the limiting grooves (104) through the limiting strips (116). A sliding frame (107) is fixedly provided on the other side of the detection protection box (101). A sliding groove (109) is provided on one side of the sliding frame (107). A positioning screw (108) is rotatably provided in the middle position of the sliding frame (107). A lifting seat (112) is threaded on the outer wall of the positioning screw (108). An anchor chain (2) is connected to one end of the lifting seat (112). A first motor (110) is fixedly provided at the top of the sliding frame (107). The output end of the first motor (110) is fixedly connected to the top of the positioning screw (108). Electrode plates (111) are fixedly installed at both ends of the bottom of the inner wall of the detection protective box (101). A bionic mechanism (5) is connected to the bottom of the inner wall of the detection protective box (101). The bionic mechanism (5) includes stirring wheels (501) rotating at both ends of the bottom of the inner wall of the detection protective box (101). The bottom ends of the two stirring wheels (501) are fixedly provided with sprockets (502) through the detection protective box (101). The outer walls of the two sprockets (502) are connected by a chain (503). A groove (105) is provided in the middle of the bottom of the detection protective box (101). The two sprockets (502) and the chain (503) are located inside the groove (105). A connecting shaft (508) is fixedly provided at the top of one of the stirring wheels (501). One end of the inner wall of the detection protective box (101) is fixed. A support platform (509) is provided. A first helical gear (510) is rotatably provided at the middle position of one side of the support platform (509), and a second helical gear (511) is rotatably provided at the middle position of the top of the support platform (509). The tooth surface of the first helical gear (510) meshes with the tooth surface of the second helical gear (511). The top end of the connecting shaft (508) passes through the support platform (509) and is fixedly connected to the bottom end of the second helical gear (511). A fourth motor (513) is fixedly provided on one side of the detection protection box (101). A fixed shaft (512) is fixedly provided at the output end of the fourth motor (513). One end of the fixed shaft (512) passes through the support platform (509) and is fixedly connected to one end of the first helical gear (510). One of the stirring wheels (501) has a positioning gear (504) fixedly installed at its bottom end. The tooth surface of the positioning gear (504) is engaged with a positioning rack (505). One end of the positioning rack (505) is fixedly equipped with a wave-making plate (506). One end of the wave-making plate (506) is fixedly equipped with a balance frame (507). One side of the balance frame (507) is in contact with one side of the positioning gear (504). The bottom end of the inner wall of the detection protection box (101) is fixedly equipped with a sliding strip (106). The bottom end of the wave-making plate (506) is in sliding contact with the top end of the sliding strip (106).

2. The anchor chain section tension detection device according to claim 1, characterized in that: The tension control frame (114) has a balance bar (115) fixed at both ends on one side, and the top of the detection protection box (101) has a balance groove (103) at both ends on one side. One end of the outer wall of the two balance bars (115) is slidably connected to the inner wall of the two balance grooves (103).

3. The anchor chain section tension detection device according to claim 1, characterized in that: The tension control mechanism (3) includes a tension control frame (301). A fixed screw (302) is rotatably provided at the middle position of the tension control frame (114). One end of the outer wall of the fixed screw (302) is threadedly connected to the middle position of the tension control frame (301). A fixed frame (304) is fixedly provided at one end of the tension control frame (114). A second motor (305) is fixedly provided at the middle position of the fixed frame (304). The output end of the second motor (305) is fixedly connected to one end of the fixed screw (302). Movable slots (303) are provided on both sides of the top of the tension control frame (114). The two ends of the tension control frame (301) are slidably connected to the top of the tension control frame (114) through the movable slots (303).

4. The anchor chain section tension detection device according to claim 3, characterized in that: The tension control mechanism (3) further includes a support frame (306) fixed at one end of the top of the tension control frame (301). The top of the support frame (306) is rotatably provided with an anchor chain winding frame (307). Both ends of the outer wall of the anchor chain winding frame (307) are fixedly provided with protective rings (308). One end of the support frame (306) is fixedly provided with a drive motor (309). The output end of the drive motor (309) is fixedly connected to one end of the anchor chain winding frame (307). The other end of the anchor chain (2) is wound up through the anchor chain winding frame (307).

5. The anchor chain section tension detection device according to claim 4, characterized in that: The anchor chain segment control mechanism (4) includes a positioning seat (401) fixed to the other end of the top of the tension control frame (301). A rotation control frame (402) is rotatably provided at the middle position of the positioning seat (401). A fixed seat (403) is fixedly provided at one end of the bottom of the rotation control frame (402). An adjusting screw (404) is rotatably provided at the middle position of the fixed seat (403). A movable seat (406) is threaded on one end of the outer wall of the adjusting screw (404). 6) A movable frame (407) is fixedly provided at one end of the top. A through slot (411) is provided at one end of the rotation control frame (402). A connecting frame (408) is fixedly provided at one end of the movable frame (407) through the through slot (411). Three through shafts (409) are fixedly provided at one end of the connecting frame (408). A third motor (405) is fixedly provided on one side of the fixed base (403). The output end of the third motor (405) is fixedly connected to one end of the adjusting screw (404).

6. The anchor chain section tension detection device according to claim 5, characterized in that: The top of the rotation control frame (402) is fixed with three support seats (410) at both ends, and the two ends of the three through shafts (409) correspond to the positions of the six support seats (410).

7. The anchor chain section tension detection device according to claim 6, characterized in that: The detection protection box (101) is fixedly equipped with an intelligent control panel on one side. The first motor (110), the second motor (305), the third motor (405), the fourth motor (513), the drive motor (309) and the hydraulic cylinder (113) are all electrically connected to an external power supply through the intelligent control panel.

8. A method for detecting the tension of a fixed section of an anchor chain according to claim 7, characterized in that, The method is as follows: Step 1: After pulling the end of the anchor chain (2) out a certain distance, position it at one end of the lifting seat (112). Drive the anchor chain winding frame (307) to rotate through the output end of the drive motor (309) fixed at one end of the support frame (306), so that the length of the anchor chain (2) is controlled. Position the other force-bearing end of the anchor chain (2) at the top of the rotation control frame (402). Drive the third motor (405) fixed on one side of the fixed seat (403) to rotate the anchor chain winding frame (307 ... The output end drives the adjusting screw (404) to rotate, so that the moving seat (406) at one end of the adjusting screw (404) threaded to the outer wall of the adjusting screw (404) drives the moving frame (407) and the connecting frame (408) to move, so that the through shaft (409) connected to one side of the connecting frame (408) passes through the hole of the anchor chain (2), and at the same time, the two ends of the through shaft (409) are squeezed with the support seat (410) to assist in the force, thereby completing the preparation work for the tension test of the anchor chain (2); Step 2: Fill the test protective box (101) with seawater until the seawater level is level with the support platform (509). Then, energize the electrode plate (111) through an external power supply device to carry out the electrolytic reaction. Step 3: The output end of the first motor (110) fixed at the top of the sliding frame (107) drives the positioning screw (108) to rotate, so that the lifting seat (112) threaded on the outer wall of the positioning screw (108) passes through the sliding groove (109) and drives the fixed end of the anchor chain (2) to rise and fall to the corresponding position, so that the anchor chain (2) section to be tested tends to be about to be taut. Step 4: The output end of the fourth motor (513) fixed to one side of the detection protection box (101) drives the fixed shaft (512) to reciprocate, causing the fixed shaft (512) to drive the first helical gear (510) to rotate. The tooth surface of the first helical gear (510) meshes with the tooth surface of the second helical gear (511), causing the second helical gear (511) to drive one of the stirring wheels (501) to rotate through the connecting shaft (508). The sprocket (502) fixed to the bottom end of the stirring wheel (501) is connected to the chain (503) for transmission, so that the two stirring wheels (501) can rotate. 1) The rotation is synchronized, causing the seawater inside the detection protection box (101) to rotate. The tooth surface of the positioning gear (504) fixed at the bottom of one of the stirring wheels (501) meshes with the tooth surface of the positioning rack (505), causing the wave-making plate (506) fixed at one end of the positioning rack (505) to slide back and forth along the sliding strip (106) opened at the bottom of the detection protection box (101). The wave-making plate (506) drives the seawater inside the detection protection box (101) to make waves back and forth, so that half of the length of the anchor chain (2) is immersed in the seawater in this environment for a certain period of time. Step 5: Simultaneously, the output end of the second motor (305) fixed inside the fixed frame (304) drives the fixed screw (302) to rotate, causing the tension control frame (301) threaded to the outer wall of the fixed screw (302) to move, causing the tension control frame (301) to slide along the top of the tension control frame (114), and driving the anchor chain (2) to be tensioned, so that the anchor chain (2) is in an environment where the tension changes continuously for a certain period of time; Step 6: Pull the end of the anchor chain (2) to be tested by the high pressure of the hydraulic cylinder (113) fixed at the top of the test protection box (101), so that the output end of the hydraulic cylinder (113) drives the tension control frame (114) to move. The limit strips (116) fixed at both ends of the tension control frame (114) slide with the limit grooves (104) opened on both sides of the test protection box (101) to keep the tension stable, so that the anchor chain (2) is pulled until it breaks, obtain the force value of the anchor chain (2), observe the breakage position of the anchor chain (2), and determine the force of the anchor chain (2) under the air reference state, seawater corrosion state and fusion load state.

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