Automatic tension testing equipment for mooring chain

Abstract

The invention discloses automatic tension testing equipment for a mooring chain, which comprises a fixed seat and a movable seat, the movable seat is arranged on a base guide rail in a sliding manner, chain clamping pieces are mounted at the tops of the fixed seat and the movable seat, two second oil cylinders are arranged between two first oil cylinders, the tops of piston rods of the two second oil cylinders are connected with a first sliding chute, and the first sliding chute is connected with a second sliding chute. In the process that the second oil cylinder drives the mooring chain pulled to move in the first sliding groove to ascend and descend, the mooring chain is clamped and buckled through the chain clamping piece; a protective cover is arranged on the outer side of the tension mechanism in a sliding manner, and a mobile detection device for performing flaw detection on the mooring chain before and after the tension test is mounted on the inner top surface of the protective cover; the second oil cylinder drives the first sliding groove to achieve lifting of the mooring chain in the traction moving process, the chain clamping pieces on the two sides are used for clamping and buckling the mooring chain in the lifting process, manual intervention is not needed in the whole process, and the working efficiency and the automation degree are greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of mooring chain tension testing, in particular to an automatic tension testing device for a mooring chain. Background Art

[0002] Mooring chain is a key equipment specially used in offshore oil and gas platforms, floating production storage and offloading vessels, marine engineering and other fields. It is mainly used to fix and stabilize floating structures to ensure their safety and stability in harsh marine environments. Mooring chain is different from ordinary marine anchor chain. It is usually made of high-strength, corrosion-resistant steel and undergoes strict welding, heat treatment and various inspection processes, including tensile testing and flaw detection, to ensure the factory quality of mooring chain.

[0003] In the production process of the existing long mooring chain, when the mooring chain is subjected to a tension test, a tractor is used to transport the heat-treated mooring chain to the tension test equipment, and then the chain links of the mooring chain are manually aligned with the clamps on both sides so that the clamps can stably and accurately clamp the chain links of the mooring chain for a tension test. However, the mooring chain is large and heavy. Although the alignment can be completed manually with the assistance of a tractor, the operation process is too dangerous and inefficient. In addition, manual flaw detection is also often used for the mooring chain, and flaw detection needs to be performed before and after the tension test, resulting in unstable test results, low test efficiency, and high test costs.

[0004] In Chinese patent CN101769809A, a chain tension tester is disclosed, which is composed of a main oil cylinder, a frame, a secondary oil cylinder, and a clamp. A movable clamp seat is provided on the frame, and pulleys are provided at both ends of the movable clamp seat. The pulleys can move left and right on the frame. Two clamps are provided on the movable clamp seat, and the tops of the two clamps are respectively fixed to the frame with a secondary oil cylinder; one end of the two main oil cylinders is fixed to the movable clamp seat, and the other end is fixed to the fixed clamp seat; two clamps are also provided on the fixed clamp seat, and a secondary oil cylinder is provided at the tops of the two clamps, respectively, one end of the secondary oil cylinder is connected to the clamp, and the other end is fixed. The invention can meet the needs of large-tonnage anchor chain tension testing, and has the characteristics of small occupation area, compact equipment, and high efficiency. However, when the clamp is used to clamp the anchor chain, it is necessary to manually align and correct the clamp position of the clamp on the chain link, which, on the one hand, has a safety hazard, and on the other hand, the clamping efficiency of the chain link is low. Summary of the invention

[0005] The purpose of the present invention is to solve the problems existing in the mooring chain tension test in the above background technology and to provide an automatic tension testing device for a mooring chain.

[0006] The present invention achieves the above-mentioned object through the following technical solutions: an automatic tension test device for a mooring chain, comprising a fixed seat and a movable seat, the movable seat being slidably arranged on a base guide rail, a tension mechanism for testing the tension of a mooring chain being arranged between the base guide rail and the fixed seat, the tension mechanism comprising two first oil cylinders arranged between the movable seat and the fixed seat, the first oil cylinder being fixedly installed on the side of the fixed seat, the movable seat being connected to the piston rod of the first oil cylinder driving its movement, and a load sensor for testing tension being installed between the front end of the piston rod of the first oil cylinder and the movable seat; a clamping chain is installed on the top of each of the fixed seat and the movable seat, two second oil cylinders are arranged between the two first oil cylinders, the tops of the piston rods of the two second oil cylinders are connected with a first slide groove, and the second oil cylinder uses the clamping chain to clamp the mooring chain in the process of driving the mooring chain being pulled and moved in the first slide groove to be lifted and lowered; a sliding protective cover is provided on the outer side of the tension mechanism, and a mobile detection device for performing flaw detection on the mooring chain before and after the tension test is installed on the inner top surface of the protective cover.

[0007] Furthermore, the chain clamp component includes a chain clamp opening and a chain blocking portion; the chain clamp component is composed of two symmetrically arranged chain clamp blocks.

[0008] Furthermore, the mobile detection device includes a lifting and moving component and a detection component; the lifting and moving component includes four telescopic cylinders installed on the top surface of the protective cover, one end of the telescopic rod of the telescopic cylinder is connected to a mounting frame, a screw rod is rotatably installed on the mounting frame, guide rods are provided on both sides of the screw rod, a motor is installed on the outer side of the mounting frame, and the output end of the motor is fixedly connected to one end of the screw rod.

[0009] Furthermore, the detection assembly includes a movable plate threadedly connected to the screw rod, and the guide rod is installed through the movable plate; a first mounting frame is connected to the bottom of the movable plate, and detectors are installed on the first mounting frame at three positions, namely upper, middle and lower. An upper detector and a lower detector for detecting a vertical mooring chain are symmetrically arranged at the upper and lower positions of the first mounting frame, and a middle detector for detecting a transverse mooring chain is symmetrically arranged at the middle position of the first mounting frame. The detector includes an electric push rod and a probe installed at one end of a telescopic rod of the electric push rod.

[0010] Furthermore, a second mounting frame connected to and installed at the bottom of the movable plate is provided on one side of the first mounting frame, a sprayer for spraying coupling agent on the mooring chain detection part is installed in the second mounting frame, and nozzles corresponding to the mooring chain positions detected by the detector are provided on the sprayer; a container box for containing coupling agent is provided on the top surface of the protective cover, a delivery pump is provided on one side of the container box through a pipeline, and the delivery pump is connected to the sprayer through a hose.

[0011] Furthermore, a cleaning mechanism for brushing the surface of the mooring chain in advance is provided on the mooring chain input side on one side of the tension mechanism, and the cleaning mechanism includes a cleaning box, and two symmetrically arranged brush rods are rotatably installed in the upper box body of the cleaning box, and the brush rods are driven by a motor. A semi-annular slag cleaner is provided on one side of the brush rod, and a plurality of blowing holes are provided on the slag cleaner to blow away the residue on the surface of the mooring chain; the slag cleaner is connected and installed on the inner top of the cleaning box through a connecting rod, and the slag cleaner is connected to an external air pump through a pipeline; a vacuum cleaner connected to the upper box body is provided in the lower box body of the cleaning box.

[0012] Furthermore, a second slide groove is provided on both sides of the cleaning box, a third slide groove is provided on one side of the base guide rail, and the third slide groove is spaced a certain distance from the movable seat; the second slide groove, the third slide groove and the bottom of the first oil cylinder are all provided with a support platform.

[0013] Furthermore, the top side edges at both ends of the first slide groove are chamfered, the bottom surfaces of the grooves on both sides of the first slide groove are inclined toward the middle, and a through hole is opened in the middle part of the first slide groove, and a recovery bucket for recovering the coupling agent is provided below the through hole.

[0014] Furthermore, the sides of the fixed seat and the movable seat are both provided with limiting grooves for limiting the first sliding groove; the movable seat moves on the base guide rail using a sliding track or a pulley.

[0015] Furthermore, slide rails are provided on both sides of the fixing seat, and the protective cover slides on the slide rails through electrical control.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention drives the first slide groove to lift the mooring chain during the towing movement by the second oil cylinder, and uses the chain clamps on both sides to clamp the mooring chain during the lifting process. The whole process does not require manual intervention, which greatly improves the work efficiency and automation level. By installing a load sensor between the front end of the piston rod of the first oil cylinder and the moving seat, the stress condition of the mooring chain during the tension test can be monitored and recorded in real time, ensuring the accuracy and reliability of the test data.

[0018] 2. The mobile detection device includes a lifting and moving component and a detection component, which can perform comprehensive flaw detection on the mooring chain before and after the tension test. The cooperation of the two can detect multiple positions of multiple mooring chains. It detects the vertical and horizontal mooring chains through the upper, lower and middle detectors to ensure that the chains in all directions can be effectively detected, thereby improving the comprehensiveness of the test; before the flaw detection, the detection component automatically sprays the coupling agent through the sprayer to ensure good contact between the probe and the surface of the mooring chain, thereby improving the detection effect and efficiency.

[0019] 3. The cleaning mechanism pre-treats the surface of the mooring chain through a brush rod, blows away the residue through a slag cleaner, and is equipped with a vacuum cleaner to clean the internal dust, ensuring the cleanliness of the mooring chain before testing and improving the accuracy of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0021] Figure 2 is a schematic diagram of the tension mechanism in the present invention;

[0022] Figure 3 is a cross-sectional view of the tension mechanism of the present invention;

[0023] Figure 4 It is an exploded diagram of the tension mechanism in the present invention;

[0024] Figure 5 is a schematic diagram of a clip chain member in the present invention;

[0025] Figure 6 is a schematic diagram of the first chute in the present invention;

[0026] Figure 7 It is a schematic diagram of the structure of the interior of the protective cover after cross-section in the present invention;

[0027] Figure 8 is a schematic diagram of a mobile detection device in the present invention;

[0028] Fig. 9 A schematic diagram of the position of the detection component of the present invention for detecting a mooring chain;

[0029] Fig.10 A schematic diagram of the position of the detector for detecting the mooring chain in the present invention;

[0030] Fig.11 It is a schematic diagram of the structure in the upper box of the cleaning box of the present invention;

[0031] Fig.12 It is a cross-sectional view of the cleaning box in the present invention.

[0032] In the figure: 1-fixed seat, 2-movable seat, 3-base guide rail, 4-tension mechanism, 5-load sensor, 6-protective cover, 7-movable detection device, 8-lifting and moving assembly, 9-detection assembly, 10-container box, 11-delivery pump, 12-cleaning mechanism, 13-second slide slot, 14-third slide slot, 15-support table, 16-recovery barrel, 17-limiting slot, 18-slide rail;

[0033] 41-first oil cylinder, 42-chain clamp, 43-second oil cylinder, 44-first slide, 421-chain clamp opening, 422-chain blocking part, 423-chain clamp block, 441-through hole;

[0034] 81- telescopic cylinder, 82- mounting frame, 83- screw rod, 84- guide rod, 85- motor;

[0035] 91-movable plate, 92-mounting frame, 93-detector, 94-second mounting frame, 95-sprinkler, 931-upper detector, 932-lower detector, 933-middle detector, 951-sprinkler, 9301-electric push rod, 9302-probe;

[0036] 121-cleaning box, 122-brushing rod, 123-slag cleaner, 124-vacuum cleaner, 1231-air blowing hole. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and 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, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] In the manufacturing process of the long mooring chain, the mooring chain will be transported to the tension testing equipment through the conveying roller after heat treatment for tension testing. During the conveying process, a traction machine will be used to pull one end of the mooring chain so that it can be smoothly transported to the tension testing equipment. The traction machine is not described in the present invention, and can be referred to Figure 1 From left to right in the figure are the conveying direction of the mooring chain and the traction direction of the tractor.

[0040] Combination Figures 1 to 12 The automatic tension test device for a mooring chain shown in the figure comprises a fixed seat 1 and a movable seat 2, the movable seat 2 is slidably arranged on a base guide rail 3, a tension mechanism 4 for testing the tension of the mooring chain is arranged between the base guide rail 3 and the fixed seat 1, the tension mechanism 4 comprises two first oil cylinders 41 arranged between the movable seat 2 and the fixed seat 1, the first oil cylinder 41 is fixedly installed on the side of the fixed seat 1, the movable seat 2 is connected to the piston rod of the first oil cylinder 41 driving the movement thereof, and a tension tester is installed between the front end of the piston rod of the first oil cylinder 41 and the movable seat 2 Load sensor 5; a clamping chain member 42 is installed on the top of the fixed seat 1 and the movable seat 2, two second oil cylinders 43 are arranged between the two first oil cylinders 41, and the tops of the piston rods of the two second oil cylinders 43 are connected with a first slide groove 44, and the second oil cylinder 43 uses the clamping chain member 42 to clamp the mooring chain in the process of lifting and lowering the mooring chain being pulled and moved in the first slide groove 44; a sliding protective cover 6 is provided on the outer side of the tension mechanism 4, and a mobile detection device 7 for performing flaw detection on the mooring chain before and after the tension test is installed on the inner top surface of the protective cover 6;

[0041] like Figure 2-5 As shown, the clamp chain member 42 includes a clamp chain opening 421 and a chain blocking portion 422; the clamp chain member 42 is composed of two symmetrically arranged clamp chain blocks 423, which are respectively fastened and installed on the fixed seat 1 and the movable seat 2 by bolts, thereby facilitating the maintenance or replacement of the clamp chain blocks 423; the sides of the fixed seat 1 and the movable seat 2 are both provided with a limiting groove 17 for limiting the first slide groove 44 during the ascending or descending process; the movable seat 2 moves on the base guide rail 3 using a slide rail or a pulley;

[0042] When the long mooring chain is subjected to a tension test, a segmented sampling test will be performed. Therefore, when the present invention is used, the mooring chain is pulled into the tension mechanism 4 by the traction machine, and the two second oil cylinders 43 are started to lift the first slide 44 up a certain distance. The arrangement of the two second oil cylinders 43 can ensure the stability of the rise of the first slide 44. When the mooring chain is pulled into the first slide 44, the mooring chain on the first slide 44 will also rise due to the rise of the first slide 44, so that the mooring chains on both sides of the first slide 44 will not be clamped by the chain clamps 42 on both sides of the first slide 44. Specifically, when the mooring chain is being towed and moved, a single chain link will not directly fall horizontally into the chain clamping opening 421 of the chain clamping member 42, and will not be blocked by the chain blocking portion 422. The mooring chain will tilt and tilt at the two chain clamping members 42 and pass through the two chain clamping members 42 smoothly under towing; and when the mooring chain needs to be tested, the second oil cylinder 43 is started to reset the first slide 44 downward. When the mooring chain is being towed and moved, a single chain link will be clamped by the chain clamping member 42 on the fixed seat 1, and the chain link on the other side will also fall into the chain clamping member 42 installed on the moving seat 2. Figure 2 As shown; at this time, the traction machine will immediately stop traction if it cannot pull, and then before officially applying the test tension, a small preload force is first applied to the mooring chain to eliminate the gap and relaxation between the chain links, so that the mooring chain is in a normal stress state, and then the first oil cylinder 41 is used to officially apply a thrust to the moving seat 2, that is, the mooring chain tension is tested. During the testing process, the data recording system of the test machine is used to record the force value, displacement, time and other data during the pulling process in real time; after completing the test of this section of the mooring chain, the first oil cylinder 41 is reset to allow relaxation between the chain links, and then the second oil cylinder 43 is started to drive the mooring chain that has just been tested in the first slide 44 to rise upward. Since the relaxation between the chain links is restored, the mooring chain can be easily lifted up from the chain clamp 42, and then the traction machine is started again to continue to pull and move the mooring chain.

[0043] like Figure 7-8 As shown, the mobile detection device 7 includes a lifting and moving component 8 and a detection component 9; the lifting and moving component 8 includes four telescopic cylinders 81 installed on the inner top surface of the protective cover 6, one end of the telescopic rod of the telescopic cylinder 81 is connected to a mounting frame 82, a screw rod 83 is rotatably installed on the mounting frame 82, guide rods 84 are provided on both sides of the screw rod 83, a motor 85 is installed on the outer side of the mounting frame 82, and the output end of the motor 85 is fixedly connected to one end of the screw rod 83; when in use, the detection component 9 can be adjusted to move up and down by controlling the telescopic cylinder 81, and the detection component 9 can be adjusted to move laterally by controlling the motor 85 to drive the rotation of the screw rod 83.

[0044] like Figure 7-10As shown, the detection assembly 9 includes a moving plate 91 screwed to the screw rod 83, and the guide rod 84 is installed in the moving plate 91. When in use, the moving plate 91 is moved by being screwed to the screw rod 83, and the two guide rods 84 guide the movement of the moving plate 91;

[0045] like Figure 9-10 As shown, a first mounting frame 92 is connected to the bottom of the movable plate 91, and detectors 93 are installed at three positions, namely, upper, middle and lower, on the first mounting frame 92, wherein an upper detector 931 and a lower detector 932 for detecting a vertical mooring chain are symmetrically arranged at the upper and lower positions of the first mounting frame 92, and a middle detector 933 for detecting a transverse mooring chain is symmetrically arranged at the middle position of the first mounting frame 92, and the detector 93 includes an electric push rod 9301 and a probe 9302 installed at one end of a telescopic rod of the electric push rod 9301; and multiple detectors 93 are symmetrically arranged on both sides of the first mounting frame 92;

[0046] Before the formal tensile test of the mooring chain, that is, after the preload force is applied to the mooring chain, the mooring chain is in a straight state. Fig. 9 As shown, at this time, the second oil cylinder 43 is used to drive the first slide 44 to move downward to avoid obstruction to the detection component 9, and then the lifting and moving component 8 is used to move the detection component 9 to the mooring chain to be tested, and then the mooring chain is subjected to ultrasonic flaw detection before the tension test, as shown in FIG. Fig.10 As shown, the electric push rod 9301 is used to move the probe 9302 to the mooring chain and contact the surface of the mooring chain, and then the moving plate 91 moves, thereby driving the probe 9302 to slide on the surface of the mooring chain, thereby detecting the vertical and horizontal mooring chains through the upper, lower and middle detectors 93, and different positions can be detected separately, and the data are received and compared through an externally connected flaw detection system, thereby avoiding the singleness of the detection data and improving the comprehensiveness and accuracy of the detection. In addition, the lifting and moving component 8 can be used to detect multiple chain links; after the detection is completed, the lifting and moving component 8 resets the detection component 9, and then a formal tension test is carried out. After the tension test is completed, the lifting and moving component 8 and the detection component 9 can be used again to perform ultrasonic flaw detection on the mooring chain after the tension test in the same way, so as to compare the flaw detection changes of the mooring chain before and after the tension test, thereby determining the production quality of the mooring chain.

[0047] When using an ultrasonic flaw detector to detect a mooring chain, a coupling agent is required. The coupling agent is used to fill the tiny gap between the probe and the surface of the mooring chain, reduce the reflection and scattering of the ultrasonic wave on the interface, and ensure that the ultrasonic wave can be effectively transmitted into the mooring chain. Therefore, before using the detection component 9 to detect the mooring chain, the coupling agent needs to be sprayed on the surface of the mooring chain detection location;

[0048] like Figure 7-9 As shown, a second mounting frame 94 connected to and mounted on the bottom of the moving plate 91 is provided on one side of the first mounting frame 92, and a sprayer 95 for spraying coupling agent on the mooring chain detection position is installed in the second mounting frame 94, and nozzles 951 corresponding to the mooring chain positions detected by the detector 93 are opened on the sprayer 95; a container box 10 for containing coupling agent is provided on the top surface of the protective cover 6, and a delivery pump 11 is connected to one side of the container box 10 through a pipeline, and the delivery pump 11 is connected to the sprayer 95 through a hose; when in use, as shown in FIG. Fig. 9 In the process, the sprayer 95 is moved to the mooring chain by using the lifting and moving assembly 8, and then the delivery pump 11 is started to deliver the coupling agent in the container box 10 to the sprayer 95, and the surface of the mooring chain to be inspected is sprayed from the nozzle 951. After the spraying is completed, the mooring chain is ultrasonically inspected by using the detector 93. The delivery pump 11 can be a metering pump, so as to quantitatively spray the coupling agent on the surface of the mooring chain, so as to control costs and reduce waste.

[0049] When using ultrasonic flaw detector to detect the mooring chain, the surface of the mooring chain needs to be cleaned to ensure the accuracy of the detection. In particular, the mooring chain after heat treatment has oxide cortex and debris attached to its surface, so it needs to be cleaned in advance.

[0050] like Figure 11-12 As shown, a cleaning mechanism 12 for brushing the surface of the mooring chain in advance is provided on the mooring chain input side of the tension mechanism 4. The cleaning mechanism 12 includes a cleaning box 121. Two symmetrically arranged brush rods 122 are rotatably installed in the upper box body of the cleaning box 121. The brush rods 122 are driven by a motor. A semi-annular slag cleaner 123 is provided on one side of the brush rod 122. A plurality of blowing holes 1231 are provided on the slag cleaner 123 to blow away the residue on the surface of the mooring chain. The slag cleaner 123 is connected to the inner top of the cleaning box 121 through a connecting rod. The slag cleaner 123 is connected to an external air pump through a pipeline. A vacuum cleaner 124 connected to the upper box body is provided in the lower box body of the cleaning box 121. When in use, the cleaning box 121 passes through the vacuum cleaner 124. After heat treatment, the mooring chain first enters the upper box of the cleaning box 121 under the traction of the traction machine, and then the motor drives the two brush rods 122 to rotate. The wire brushes on the brush rods 122 will brush the surface of the mooring chain to remove the oxide cortex and residue remaining on the surface. Then, the external air pump is started to supply air to the residue cleaner 123, so that the blowing holes 1231 on the residue cleaner 123 are used to blow dust from the surface of the mooring chain after brushing to remove the wear debris. At the same time, the vacuum cleaner 124 in the lower box is started to vacuum, thereby collecting the wear debris; the blowing holes 1231 can be inclined toward the dust suction port of the vacuum cleaner 124 to facilitate the rapid collection of the wear debris and reduce the splashing and outflow of the wear debris.

[0051] like Figure 3 and Figure 6 As shown, the top side edges at both ends of the first chute 44 are chamfered to ensure that after the first chute 44 rises a certain distance, the traction mooring chain will not get stuck at the end surface of the first chute 44 during movement; the bottom surfaces of the grooves on both sides of the groove of the first chute 44 are inclined toward the middle, and a through hole 441 is provided in the middle part of the groove of the first chute 44, and a recovery bucket 16 for recovering the coupling agent is provided below the through hole 441; when the sprayer 95 sprays the coupling agent on the mooring chain, the coupling agent will drip into the first chute 44, and then flow into the recovery bucket 16 from the through hole 441, thereby completing the recovery of the coupling agent and reducing resource waste.

[0052] like Figure 1-2 As shown, a second slide groove 13 is provided on both sides of the cleaning box 121, a third slide groove 14 is provided on one side of the base guide rail 3, and the third slide groove 14 is spaced a certain distance from the movable seat 2 to avoid the third slide groove 14 blocking the movement of the movable seat 2 when the mooring chain is undergoing a tension test; a support platform 15 is provided at the bottom of the second slide groove 13, the third slide groove 14 and the first oil cylinder 41; slide rails 18 are provided on both sides of the fixed seat 1, and the protective cover 6 slides on the slide rails 18 through electrical control.

[0053] Working principle: When the present invention is in use, the mooring chain first passes through the cleaning mechanism 12 under the traction of the traction machine. The cleaning mechanism 12 uses the brush rod 122 to brush the surface of the mooring chain in advance to clean the oxide cortex and residue on the surface, and uses the residue cleaner 123 to blow dust on it, and uses the vacuum cleaner 124 to collect the residue; then the mooring chain enters the tension mechanism 4, and the second oil cylinder 43 is started to raise the first slide 44 upward for a certain distance, and the mooring chain can continue to be smoothly towed and moved. When tension detection is required, the second oil cylinder 43 can drive the first slide 44 to reset, and then the chain link will be clamped by the chain clamp 42 in the process of the mooring chain continuing to be towed and moved. After applying a small preload force, the mooring chain is straightened, thereby the ultrasonic flaw detection operation before the tension detection can be performed on the mooring chain, that is, using The lifting and moving assembly 8 is used to adjust the detection position, and then the coupling agent is sprayed on the position to be detected of the mooring chain by using the sprayer 95, so as to improve the detection effect; after spraying the coupling agent, the detector 93 in the detection assembly 9 is used to perform ultrasonic flaw detection on the horizontal and vertical chain links from the upper, middle and lower positions respectively. After the detection is completed, the detection assembly 9 is reset, and then the first oil cylinder 41 can be used to push the moving seat 2 to perform a tension test on the mooring chain. During the detection process, the data recording system of the testing machine is used to record the force value, displacement, time and other data in the tension process in real time; after the tension test is completed, the lifting and moving assembly 8 and the detection assembly 9 can be used again to perform ultrasonic flaw detection on the mooring chain after the tension test in the same way, so as to compare the flaw detection changes of the mooring chain before and after the tension test, so as to determine the production quality of the mooring chain.

[0054] In the present invention, the industrial-grade automatic control system in the prior art can be used to program the mobile detection device 7 and the cleaning mechanism 12, and the tensile test can record various data of the tensile test through the testing machine data recording system.

[0055] The coupling agent used in the ultrasonic flaw detector of the present invention can be selected according to the actual production situation:

[0056] 1. Lubricating oil: such as compressor lubricating oil, steam engine lubricating oil, spindle oil, industrial vaseline, butter, grease, etc. These coupling agents have high viscosity and poor fluidity. They are suitable for workpieces with rough surfaces and are harmless to operators.

[0057] 2. Chemical paste (carboxymethyl cellulose): This is a food additive extracted from starch. It is cheap, non-corrosive to workpieces, and harmless to the human body. It can be mixed with tap water to form "industrial glue" and used as a coupling agent. It is suitable for workpieces with general roughness surfaces.

[0058] 3. Water glass (sodium silicate): Water glass has good sound transmission effect and is cheap, but it has the characteristic of strong water absorption.

[0059] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0060] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An automatic tension test device for a mooring chain, comprising a fixed seat (1) and a movable seat (2), wherein the movable seat (2) is slidably arranged on a base guide rail (3), a tension mechanism (4) for testing the tension of the mooring chain is arranged between the base guide rail (3) and the fixed seat (1), the tension mechanism (4) comprising two first oil cylinders (41) arranged between the movable seat (2) and the fixed seat (1), the first oil cylinder (41) being fixedly mounted on the side of the fixed seat (1), the movable seat (2) being connected to a piston rod of the first oil cylinder (41) driving the movable seat (2), and a load sensor (5) for testing tension is installed between the front end of the piston rod of the first oil cylinder (41) and the movable seat (2); characterized in that: A clamping chain member (42) is installed on the top of the fixed seat (1) and the movable seat (2); two second oil cylinders (43) are arranged between the two first oil cylinders (41); the tops of the piston rods of the two second oil cylinders (43) are connected with a first slide groove (44); the second oil cylinder (43) uses the clamping chain member (42) to clamp the mooring chain when driving the mooring chain being pulled and moved in the first slide groove (44) to rise and fall; a sliding protective cover (6) is provided on the outer side of the tension mechanism (4); a mobile detection device (7) for performing flaw detection on the mooring chain before and after the tension test is installed on the inner top surface of the protective cover (6).

2. The automatic tensile testing device for mooring chains according to claim 1, characterized in that: The chain clamp member (42) comprises a chain clamp opening (421) and a chain blocking portion (422); the chain clamp member (42) is composed of two symmetrically arranged chain clamp blocks (423).

3. The automatic tension testing device for mooring chains according to claim 2, characterized in that: The mobile detection device (7) comprises a lifting and moving assembly (8) and a detection assembly (9); the lifting and moving assembly (8) comprises four telescopic cylinders (81) mounted on the inner top surface of the protective cover (6); one end of the telescopic rod of the telescopic cylinder (81) is connected to a mounting frame (82); a screw rod (83) is rotatably mounted on the mounting frame (82); guide rods (84) are arranged on both sides of the screw rod (83); a motor (85) is mounted on the outer side surface of the mounting frame (82); and an output end of the motor (85) is fixedly connected to one end of the screw rod (83).

4. The automatic tensile testing device for mooring chains according to claim 3, characterized in that: The detection assembly (9) comprises a movable plate (91) screwed to the screw rod (83), and the guide rod (84) is installed in the movable plate (91); the bottom of the movable plate (91) is connected to a first mounting frame (92), and detectors (93) are installed at three positions of upper, middle and lower on the first mounting frame (92), wherein an upper detector (931) and a lower detector (932) for detecting a vertical mooring chain are symmetrically arranged at the upper and lower positions of the first mounting frame (92), and a middle detector (933) for detecting a transverse mooring chain is symmetrically arranged at the middle position of the first mounting frame (92), and the detector (93) comprises an electric push rod (9301) and a probe (9302) installed at one end of a telescopic rod of the electric push rod (9301).

5. The automatic tensile testing device for mooring chains according to claim 4, characterized in that: A second mounting frame (94) connected to and mounted on the bottom of the movable plate (91) is provided on one side of the first mounting frame (92); a sprayer (95) for spraying coupling agent on the mooring chain detection position is installed in the second mounting frame (94); the sprayer (95) is provided with nozzles (951) corresponding to the mooring chain positions detected by the detector (93); a container box (10) for containing coupling agent is provided on the top surface of the protective cover (6); a delivery pump (11) is provided on one side of the container box (10) through a pipeline connection; the delivery pump (11) is connected to the sprayer (95) through a hose.

6. The automatic tensile testing device for mooring chains according to claim 5, characterized in that: A cleaning mechanism (12) for brushing the surface of the mooring chain in advance is provided on the mooring chain input side of the tension mechanism (4), and the cleaning mechanism (12) comprises a cleaning box (121), and two symmetrically arranged brush rods (122) are rotatably mounted in the upper box body of the cleaning box (121), and the brush rods (122) are driven by a motor, and a semi-annular slag cleaner (123) is provided on one side of the brush rod (122), and a plurality of blowing holes (1231) are provided on the slag cleaner (123) to blow away the residue on the surface of the mooring chain; the slag cleaner (123) is connected to the inner top of the cleaning box (121) through a connecting rod, and the slag cleaner (123) is connected to an external air pump through a pipeline; and a vacuum cleaner (124) connected to the upper box body is provided in the lower box body of the cleaning box (121).

7. The automatic tensile testing device for mooring chains according to claim 6, characterized in that: A second slide groove (13) is provided on both sides of the cleaning box (121), a third slide groove (14) is provided on one side of the base guide rail (3), and the third slide groove (14) is spaced a certain distance from the movable seat (2); and a support platform (15) is provided at the bottom of the second slide groove (13), the third slide groove (14) and the first oil cylinder (41).

8. The automatic tension testing device for mooring chains according to claim 7, characterized in that: The top side edges of both ends of the first slide groove (44) are chamfered, the bottom surfaces of the grooves on both sides of the first slide groove (44) are inclined toward the middle, and a through hole (441) is opened in the middle of the groove of the first slide groove (44), and a recovery bucket (16) for recovering the coupling agent is provided below the through hole (441).

9. The automatic tensile testing device for mooring chains according to claim 8, characterized in that: The sides of the fixed seat (1) and the movable seat (2) are both provided with limiting grooves (17) for limiting the first sliding groove (44); the movable seat (2) moves on the base guide rail (3) by means of a sliding track or a pulley.

10. The automatic tensile testing device for mooring chains according to claim 9, characterized in that: Slide rails (18) are provided on both sides of the fixing seat (1), and the protective cover (6) slides on the slide rails (18) through electrical control.

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