Steel strand strength testing device and testing method thereof

Abstract

The invention relates to a steel strand strength testing device and a testing method thereof, and relates to the field of steel strand detection.The steel strand strength testing device comprises two driving mechanisms, and a testing mechanism for testing the strength of a steel strand by pushing the steel strand is arranged between the two driving mechanisms; each driving mechanism comprises a bobbin used for winding a steel strand, a driving piece used for driving the bobbin to rotate and a locking assembly used for locking rotation of the bobbin, a through hole penetrating through the bobbin is formed in the side wall of the bobbin, and a clamping mechanism is installed on the side wall of the bobbin; when the coiled steel strand is tested, the uncoiled end of the steel strand is wound around the two driving mechanisms in sequence and is connected with the testing mechanism; when a single section of the steel strand is tested, each end of the steel strand connected to the testing mechanism penetrates through the through hole in the corresponding spool and is clamped and fixed by the clamping mechanism. The steel strand strength testing device has the advantages that strength testing can be conveniently carried out on coiled steel strands in a segmented mode, and meanwhile strength testing can be conveniently carried out on single-segment steel strands.

Description

Technical Field

[0001] The present application relates to the field of strand testing, and particularly to a strand strength testing device and a testing method thereof. Background Art

[0002] A strand is a steel wire bundle formed by twisting multiple multi-strand steel ropes around a fiber core or a steel wire rope core. Strands are usually used in hoisting operations. However, during hoisting operations, strands need to bear a large tensile load. Therefore, it is particularly important to conduct safety inspections on them during factory production to avoid safety accidents.

[0003] The Chinese patent with the publication number CN116625841A discloses a prestressed strand strength detection device and method, including a first wire reel and a second wire reel. The strand sequentially winds around the first wire reel and the second wire reel. A tensioning mechanism for pulling the strand is provided between the first wire reel and the second wire reel. The tensioning mechanism can adjust the tension of the strand, so as to conduct strength tests on the strand between the first wire reel and the second wire reel. After the strand between the first wire reel and the second wire reel is tested, control the first wire reel and the second wire reel to rotate simultaneously, so that the tested strand section disengages from between the first wire reel and the second wire reel, and the next section of the strand enters between the first wire reel and the second wire reel for testing. In this way, the strength tests of the longer strand are carried out in segments.

[0004] However, the above device is only suitable for conducting strength tests on the longer strands in coils in segments, and it is difficult to fix a single segment of the strand (shorter strand), so it is difficult to conduct strength tests on a single segment of the strand. Summary of the Invention

[0005] In order to facilitate the strength testing of the strands in coils in segments and at the same time facilitate the strength testing of a single segment of the strand, the present application provides a strand strength testing device and a testing method thereof.

[0006] In a first aspect, a strand strength testing device provided by the present application adopts the following technical solution: A steel strand strength testing device comprises two driving mechanisms, wherein a testing mechanism for testing the strength of the steel strand by pushing the steel strand is arranged between the two driving mechanisms, wherein each of the driving mechanisms comprises a bobbin for winding the steel strand, a driving member for driving the bobbin to rotate forward and reversely, and a locking assembly for locking the rotation of the bobbin, wherein a through hole penetrating the bobbin is provided on the side wall at one end of the bobbin, and a clamping mechanism for clamping the steel strand is installed on the side wall at the other end of the bobbin; when the rolled steel strand is tested in sections, one end of the unwound steel strand is wound around the two driving mechanisms in turn and connected to the testing mechanism; when a single section of the steel strand is tested, each end of the steel strand connected to the testing mechanism passes through a through hole on a corresponding bobbin and is clamped and fixed by the clamping mechanism, and then each bobbin is driven to rotate until each end of the steel strand is wound around the corresponding bobbin.

[0007] By adopting the above technical solution, the steel strand strength testing device can effectively perform strength tests on rolled steel strands or single-segment steel strands. For rolled steel strands, one end of the unwinding steel strand is wound around two drive mechanisms in sequence and connected to the testing mechanism between the drive mechanisms, and the strength of the steel strand between the two drive mechanisms is tested by the testing mechanism. After the test of the steel strand between the two drive mechanisms is completed, the two bobbins are driven to rotate simultaneously until the tested steel strand is separated from the two drive mechanisms and the other end of the steel strand to be tested enters between the two drive mechanisms, so as to facilitate the continuous segmented testing of the steel strand.

[0008] For a single-segment steel strand, the steel strand is connected to the testing mechanism, and then each end is connected to a corresponding bobbin. One end of the steel strand passes through the through hole on the bobbin and is clamped and fixed by the clamping mechanism. Then the driving member is started to drive each bobbin to rotate. The steel strand wound on the bobbin will tie a section of the steel strand connected to the clamping mechanism to the bobbin to ensure the stability of the steel strand during the test. Then the testing mechanism can be started to perform strength tests on the single-segment steel strand. This makes it easy to perform strength tests on rolled steel strands in sections, and at the same time, it is easy to perform strength tests on single-segment steel strands.

[0009] Preferably, a guiding mechanism is installed on the spool, each end of the spool is fixedly connected to a limiting plate, the guiding mechanism comprises a connecting block connected to a limiting plate near the through hole, the connecting block is located on the side of the limiting plate facing away from the spool, the connecting block is rotatably connected to a rotating block on the side facing away from the spool, a push rod is threadedly connected to the rotating block, a connecting hole is provided on the limiting plate connected to the connecting block, a sliding hole is provided on the connecting block, one end of the push rod is plugged into the sliding hole and the connecting hole in turn, a slot for engaging with the steel wire rope is provided at the end of the push rod close to the spool, the inner side wall of the sliding hole is fixedly connected to the guide block, the side wall of the push rod is provided with a guide groove, and the guide block is slidably connected to the guide groove.

[0010] By adopting the above technical solution, when testing a single section of steel strand, the rotating block is rotated, and the rotation of the rotating block drives the push rod to move in the direction close to the two limiting plates until the slot on the push rod is engaged with the steel strand. The push rod continues to move, pushing the steel strand to be wound on the bobbin to gradually move in the direction close to the clamping mechanism until the steel strand to be wound on the bobbin is located between the through hole and the clamping mechanism. At this time, the bobbin is rotated to reel in the steel strand, so that the steel strand wound on the bobbin can more accurately tie the end of the steel strand connected to the clamping mechanism to the bobbin, thereby strengthening the connection between the steel strand and the bobbin.

[0011] Preferably, the connecting block is slidably connected to the corresponding limiting plate in a direction perpendicular to the axis of the spool, and a pair of fixed blocks are fixedly connected to the side of the limiting plate close to the through hole that is away from the spool, and a lead screw is rotatably connected between the pair of fixed blocks, the lead screw passes through the connecting block and is threadedly connected to the connecting block, and a cap is fixedly connected to one end of the lead screw.

[0012] By adopting the above technical solution, when testing the rolled steel strand, the rotating block is rotated, and the rotation of the rotating block drives the push rod to move in the direction close to the two limiting plates. At the same time, the cover cap is rotated, and the screw drives the connecting block and the push rod to move in the direction close to the bobbin, so that the push rod can press the steel strand wound on the bobbin onto the bobbin, thereby strengthening the connection between the steel strand and the bobbin.

[0013] Preferably, a tensioning mechanism is provided between the testing mechanism and one of the driving mechanisms, the tensioning mechanism comprising a fixed plate, one side of the fixed plate is rotatably connected to a winding shaft, one end of the winding shaft is coaxially fixed with a winding roller, a winding motor for driving the winding shaft to rotate forward and reverse is installed on the fixed plate, a transition hole for plugging in the steel strand is opened on the side of the winding roller, and the winding roller is used for winding up the steel strand plugged in to the transition hole.

[0014] By adopting the above technical solution, when testing a single-segment steel strand, the single-segment steel strand is plugged into the transition hole on the winding roller, and then the two ends of the steel strand are respectively passed through the corresponding through holes and fixed by the clamping mechanism. The winding motor is started to drive the winding shaft and the winding roller to rotate, and the winding roller rotates to wind the steel strand until the steel strand is in a tensioned state. Then, each spool is rotated to wind the steel strand, and at the same time, the winding roller is pulled to rotate to automatically unwind the steel strand, so that the steel strand in a tensioned state is gradually wound on each spool, so that the steel strand at one end connected to the clamping mechanism can be better tied to the spool, and the steel strand can be more tightly wound on the corresponding spool.

[0015] Preferably, a rubber wheel 1 is coaxially fixed on the winding shaft, a side surface of the fixed plate is rotatably connected to an adjusting shaft, a rubber wheel 2 is coaxially fixed on the adjusting shaft, the rubber wheel 1 is tightly attached to the rubber wheel 2, a ratchet is coaxially fixed on the adjusting shaft, and a pawl that cooperates with the ratchet is installed on the side surface of the fixed plate close to the ratchet; when the winding roller reels the steel strand, the rubber wheel 1 drives the rubber wheel 2 to rotate; when the winding shaft unwinds the steel strand, the rubber wheel 2 is locked by the ratchet pawl.

[0016] By adopting the above technical solution, when the winding roller rotates to wind up the steel strand, the winding shaft rotates to drive the rubber wheel 1 to rotate, and the rubber wheel 1 drives the rubber wheel 2 to rotate smoothly, and at this time the ratchet pawl is not locked. When the steel strand pulls the winding roller to rotate in the opposite direction to unwind the steel strand, the ratchet pawl is locked, and it is difficult for the rubber wheel 1 to drive the rubber wheel 2 to rotate together. That is, the rotation of the rubber wheel 1 needs to overcome the friction force given to the rubber wheel 1 by the rubber wheel 2, so as to ensure that the winding roller slowly unwinds the steel strand, so that the steel strand can always remain in a tensioned state during the unwinding of the winding roller.

[0017] Preferably, the clamping mechanism includes a clamping block 1 fixedly connected to the side wall of the spool, a clamping block 2 is provided on the side of the clamping block 1 facing away from the spool, the clamping block 1 and the clamping block 2 are used to clamp the steel strand, and the clamping block 1 and the clamping block 2 are connected by fasteners.

[0018] By adopting the above technical solution, one end of the steel strand is passed through between clamping block one and clamping block two, and then clamping block one and clamping block two are locked by fasteners, so that the steel strand is firmly clamped between clamping block one and clamping block two.

[0019] Preferably, the side surfaces of the clamping block 1 and the clamping block 2 that are close to each other are slidably connected with elastic plates, and the side surfaces of the two elastic plates that are away from each other are both inclined surfaces 1 that are gradually inclined in the direction of approaching the through hole, and the side surfaces of the clamping block 1 and the clamping block 2 that are close to each other are both inclined surfaces 2 that are gradually inclined in the direction of approaching the through hole, one inclined surface 1 corresponds to one inclined surface 2 and inclined surface 1 and inclined surface 2 are in contact with each other, and the side surfaces of the two elastic plates that are away from each other are fixedly connected with mounting blocks, and the side surfaces of the clamping block 1 and the clamping block 2 that are close to each other are both provided with mounting grooves, each mounting block is slidably connected to the corresponding mounting groove, and a spring is provided in each mounting groove, one end of the spring abuts against the mounting block, and the other end abuts against a side wall of the mounting groove.

[0020] By adopting the above technical solution, the steel strand is clamped between two elastic plates. Since the elastic plates and the first clamping block have a certain thickness, when the steel strand is clamped between the two elastic plates, there is a distance between this section of the steel strand passing through the through hole and close to the clamping mechanism and the spool. Therefore, when the spool rotates to wind up the steel strand, during the process of the steel strand wound on the spool binding a section of the steel strand connected to the clamping mechanism in the direction close to the spool, it will push a section of the steel strand connected to the clamping mechanism in the direction close to the spool. At this time, the steel strand connected to the clamping mechanism drives a pair of elastic plates to move in the direction close to the through hole through friction. Under the action of the first inclined surface and the second inclined surface, the pair of elastic plates gradually clamp the steel strand further in the direction of approaching each other, strengthening the connection between the clamping mechanism and the steel strand.

[0021] Preferably, both the driving mechanism and the testing mechanism are installed on the workbench. The driving mechanism includes two working plates fixedly connected to the workbench. A working shaft is rotatably connected between the two working plates. The spool is coaxially fixed to the working shaft. The locking assembly includes two racks vertically slidably connected to one of the working plates. A gear is meshed between the two racks. The gear is rotatably connected to the working plate. One end of each rack is fixedly connected with a locking rubber block. The working shaft is located between the two locking rubber blocks. A hydraulic cylinder for driving one of the racks to lift is fixedly connected to the working plate.

[0022] By adopting the above technical solution, when the hydraulic cylinder is started, the piston rod of the hydraulic cylinder pushes one of the racks to lift, thereby driving the two racks to move in opposite directions through the rotation of the gear, and then driving the two locking rubber blocks to clamp the working shaft in the direction of approaching each other, or to disengage from the working shaft in the direction of moving away from each other.

[0023] In a second aspect, a method for testing the strength of a steel strand provided by the present application adopts the following technical solution: A testing method for a steel strand strength testing device includes the following steps: S1. One end of the coiled steel strand is sequentially wound around the spool of one of the driving mechanisms, then connected to the testing mechanism, and then wound around the spool of the other driving mechanism, and then the tested steel strand is wound up. S2. Rotate the rotating block in each driving mechanism to gradually make the push rod enter between the two limiting plates. Then rotate the cap in each driving mechanism to make the lead screw rotate to drive the push rod to gradually press the steel strand wound around the spool in the direction close to the spool. S3. Lock each spool through the locking assembly, start the testing mechanism, and push and pull the steel strand between the two driving mechanisms to perform strength testing. S4. After the steel strand between the two driving mechanisms is tested, rotate the cap and the rotating block in the reverse direction to disengage the push rod from between the two limiting plates. At the same time, start the rotation of the two spools to disengage the steel strand between the two driving mechanisms from between the two driving mechanisms, and test the next section of the steel strand entering between the two driving mechanisms.

[0024] By adopting the above technical solution, it is convenient to conduct segmented tests on the coiled steel strand, and the connection between the steel strand and each spool is strengthened.

[0025] In the third aspect, a steel strand strength testing method provided by the present application adopts the following technical solution: A testing method for a steel strand strength testing device includes the following steps: S1. Connect a single-section steel strand to the testing mechanism. Then, pass one end of the steel strand through the transition hole on the winding roller, and then through the through hole on one of the spools and be clamped and fixed by the clamping mechanism. Pass the other end of the steel strand through the through hole on the other spool and be clamped and fixed by the clamping mechanism. S2. Start the winding motor, and the winding roller winds the steel strand until the steel strand is in a tensioned state. During the winding process of the winding roller, the first rubber wheel drives the second rubber wheel to rotate. S3. Rotate the rotating block to drive the push rod to move towards between the two limiting plates. One end of the steel strand is clamped with the card slot on the push rod. The movement of the push rod pushes the steel strand near the detection mechanism towards the clamping mechanism until one end of the steel strand located away from the clamping mechanism in the through hole is between the through hole and the clamping mechanism. S4. Start the two driving parts simultaneously to drive each spool to wind the steel strand. The steel strand pulls the winding roller to gradually unwind the steel strand. At this time, the second rubber wheel is fixed, and the first rubber wheel rotates relative to the second rubber wheel. The steel strand wound on each spool will tie the section of the steel strand clamped by the clamping mechanism to the spool. During the winding process of the spool on the steel strand, the section of the steel strand clamped by the clamping mechanism gradually drives a pair of elastic plates towards the through hole. The pair of elastic plates are forced by the first inclined surface and the second inclined surface to clamp the steel strand towards each other. S5. After the winding roller finishes unwinding the steel strand, turn off the two driving parts, lock the spool through the locking component, and start the testing mechanism to conduct a pushing and pulling test on the single-section steel strand.

[0026] By adopting the above technical solution, it is convenient to conduct strength tests on single-section steel strands, and each end of the steel strand is firmly connected to the corresponding spool.

[0027] In summary, the present application includes at least one of the following beneficial technical effects: It is convenient to conduct strength tests on segmented coiled steel strands and at the same time convenient to conduct strength tests on single-section steel strands; It can preferably bind one end of the steel strand connected to the clamping mechanism onto the spool, and enable the steel strand to be wound around the corresponding spool relatively tightly. During the process of binding one end of the steel strand connected to the clamping mechanism onto the spool, a pair of elastic plates gradually clamp the steel strand more tightly in the direction of approaching each other, strengthening the connection between the clamping mechanism and the steel strand. Brief Description of the Drawings

[0028] Figure 1 It is a schematic diagram showing the overall structure of the test device in the embodiment of the present application.

[0029] Figure 2 It is a schematic diagram showing the structure of the driving mechanism in the embodiment of the present application.

[0030] Figure 3 It is a top view showing the test of the coiled steel strand by the device in the embodiment of the present application.

[0031] Figure 4 It is a top view showing the test of a single-section steel strand by the device in the embodiment of the present application.

[0032] Figure 5 It is a schematic diagram showing the structure of the guiding mechanism in the embodiment of the present application.

[0033] Figure 6 It is a schematic diagram showing the installation position of the ratchet and pawl in the embodiment of the present application.

[0034] Figure 7 It shows Figure 5 an enlarged view of part A in

[0035] Figure 8 It is a schematic diagram showing the structure of the clamping mechanism in the embodiment of the present application.

[0036] Description of reference numerals: 1, workbench; 2, drive mechanism; 21, spool; 211, through hole; 22, control motor; 23, locking assembly; 231, rack; 232, gear; 233, locking rubber block; 234, hydraulic cylinder; 24, working plate; 25, working shaft; 26, limiting plate; 261, connection hole; 3, testing mechanism; 31, test frame; 32, lifting lead screw; 33, test motor; 34, nut; 35, test wheel; 4, clamping mechanism; 41, first clamping block; 411, mounting groove; 42, second clamping block; 43, fastener; 431, screw; 432, nut; 44, elastic plate; 45, mounting block; 46, spring; 5, guiding mechanism; 51, connecting block; 511, sliding hole; 52, fixed block; 53, lead screw; 54, cap; 55, rotating block; 56, push rod; 561, guiding groove; 562, clamping groove; 57, guiding block; 6, tensioning mechanism; 61, fixing plate; 62, winding shaft; 63, winding roller; 631, transition hole; 64, winding motor; 65, first rubber wheel; 66, adjusting shaft; 67, second rubber wheel; 68, ratchet; 69, ratchet pawl. Detailed implementation manners

[0037] The following further elaborates on this application Figures 1 - 8 in conjunction with the attached drawings.

[0038] An embodiment of this application discloses a steel strand strength testing device. Referring to Figure 1 and Figure 2 , the testing device includes a workbench 1 and two drive mechanisms 2. A testing mechanism 3 for testing the strength of the steel strand is provided between the two drive mechanisms 2. Each drive mechanism 2 includes a spool 21 for winding the steel strand, a driving member for driving the spool 21 to rotate forward and backward, and a locking assembly 23 for locking the rotation of the spool 21.

[0039] Referring to Figure 1 and Figure 2 , the testing mechanism 3 includes a test frame 31 fixed on the workbench 1. A lifting lead screw 32 is rotatably connected to the test frame 31. A test motor 33 for driving the lifting lead screw 32 to rotate is fixedly connected to the upper end of the test frame 31. A nut 34 is threadedly connected to the lifting lead screw 32. The nut 34 is vertically slidably connected to the test frame 31. A test wheel 35 is rotatably connected to one side surface of the nut 34. The steel strand to be tested contacts the side surface of the test wheel 35, and the lifting of the test wheel 35 can push and pull the steel strand to observe whether the steel strand breaks, thereby testing the strength of the steel strand.

[0040] Each driving mechanism 2 includes two working plates 24 fixedly connected to the workbench 1. A working shaft 25 is rotatably connected between the two working plates. The working shaft 25 penetrates through the wire spool 21 and is coaxially fixed to the wire spool 21. At each end of each wire spool 21, a limiting plate 26 is fixedly connected. The limiting plate 26 is used to prevent the steel strand wound on the wire spool 21 from detaching from the wire spool 21.

[0041] The driving member includes a control motor 22 fixedly connected to one of the working plates 24. The output shaft of the control motor 22 is coaxially fixed to the working shaft 25. The control motor 22 is a servo motor with a self-locking function.

[0042] Refer to Figure 1 and Figure 2 As shown in FIGS.

[0043] The locking assembly 23 is installed on one of the working plates 24. The locking assembly 23 includes two racks 231 vertically slidably connected to the corresponding working plate 24. The two racks 231 are located on the side of the working plate 24 close to the wire spool 21. A gear 232 is meshed between the two racks 231. The gear 232 is rotatably connected to the working plate 24 and is located below the working shaft 25.

[0044] At the upper end of each rack 231, a locking rubber block 233 is fixedly connected. The working shaft 25 is located between the two locking rubber blocks 233 and is also located between the two racks 231. A hydraulic cylinder 234 is fixedly connected to the working plate 24. The piston rod of the hydraulic cylinder 234 is vertically upward and is fixedly connected to the lower end of one of the racks 231.

[0045] Refer to Figure 3 and Figure 4 As shown in FIGS.

[0046] Refer to Figure 1 and Figure 3 When testing the steel strand in segments of a coiled steel strand, the coiled steel strand is placed on one side of the device. One end of the steel strand is unreeled and sequentially wound around one of the driving mechanisms 2 and the test wheel 35, and then wound around the other driving mechanism 2. Start the test motor 33 to drive the test wheel 35 to move up and down, and the strength of the steel strand between the two driving mechanisms 2 can be tested.

[0047] Refer to Figure 4 and Figure 5When testing a single - strand steel strand, each end of the steel strand passes through a through - hole 211 on a corresponding spool 21 and is clamped and fixed by a clamping mechanism 4. At the same time, the steel strand is tested by winding. Subsequently, each spool 21 is driven to rotate until each end of the steel strand winds around the corresponding spool 21. Finally, the test motor 33 is started to perform a strength test on the single - strand steel strand.

[0048] Refer to Figure 4 and Figure 5 Among them, a guiding mechanism 5 is connected to one of the limiting plates 26. The guiding mechanism 5 includes a connecting block 51 slidably connected to the side of the limiting plate 26 facing away from the spool 21. On the side of the connecting block 51 facing away from the spool 21, a pair of fixing blocks 52 are fixedly connected. A lead screw 53 is rotatably connected between the fixing blocks 52. The lead screw 53 passes through the connecting block 51 and is threadedly connected to the connecting block 51. One end of the lead screw 53 is fixedly connected with a cap 54.

[0049] A rotating block 55 is rotatably connected to the side of the connecting block 51 facing away from the spool 21. A push rod 56 passing through the rotating block 55 is threadedly connected to the rotating block 55. The push rod 56 is arranged along the axis direction of the spool 21. A connecting hole 261 is opened on the limiting plate 26 connected with the connecting block 51. The connecting hole 261 is a long - strip hole and is arranged along the direction perpendicular to the axis of the spool 21. A sliding hole 511 is opened on the connecting block 51. One end of the push rod 56 is inserted into both the sliding hole 511 and the connecting hole 261 at the same time. A guiding block 57 is fixedly connected to the inner wall of the sliding hole 511. A guiding groove 561 is opened on the side wall of the push rod 56. The guiding block 57 slides in the guiding groove 561. A clamping groove 562 is opened at one end of the push rod 56 close to the spool 21. The clamping groove 562 is used for clamping the steel strand.

[0050] Refer to Figure 4 and Figure 5 When testing a single - strand steel strand, one end of the steel strand passes through the through - hole 211 and is clamped and fixed by the clamping mechanism 4. Subsequently, the rotating block 55 is rotated. The rotation of the rotating block 55 drives the push rod 56 to move towards the direction close to the two limiting plates 26. The clamping groove 562 at one end of the push rod 56 gradually clamps the steel strand. At this time, the movement of the push rod 56 pushes the steel strand to gradually move towards the direction close to the clamping mechanism 4. At this time, the steel strand connected to the clamping groove 562 is located between the through - hole 211 and the clamping mechanism 4. The spool 21 is rotated, and the spool 21 winds the steel strand. The steel strand gradually winds around the spool 21, and a section of the steel strand connected to the clamping mechanism 4 is tied to the spool 21, strengthening the connection between the steel strand and the clamping mechanism 4.

[0051] Refer to Figure 4 and Figure 6, a tensioning mechanism 6 is installed on the workbench 1, and the tensioning mechanism 6 is located between the testing mechanism 3 and one of the driving mechanisms 2. The tensioning mechanism 6 includes a fixing plate 61 fixedly connected to the upper surface of the workbench 1. One side surface of the fixing plate 61 is rotatably connected to a winding shaft 62, and a winding roller 63 is coaxially fixed to the end of the winding shaft 62 far from the fixing plate 61. A winding motor 64 is fixedly connected to the side surface of the fixing plate 61 facing away from the winding roller 63, and the output shaft of the winding motor 64 is coaxially fixed to the winding shaft 62.

[0052] A rubber wheel one 65 is coaxially fixed to the end of the winding shaft 62 close to the fixing plate 61. An adjusting shaft 66 is rotatably connected to the side surface of the fixing plate 61 close to the rubber wheel one 65. A rubber wheel two 67 is fixedly connected to the adjusting shaft 66, and the side surfaces of the rubber wheel one 65 and the rubber wheel two 67 are in close contact. A ratchet wheel 68 is fixedly connected to the end of the adjusting shaft 66 close to the fixing plate 61. A pawl 69 is installed on the fixing plate 61, and the ratchet wheel 68 and the pawl 69 are installed in cooperation with each other.

[0053] When testing a single-section steel strand, each end of the steel strand is connected to the clamping mechanism 4 on the spool 21, and then the winding motor 64 is started to drive the winding roller 63 to rotate. The winding roller 63 winds the steel strand. At this time, the rubber wheel one 65 drives the rubber wheel two 67 to rotate, which is convenient for the winding roller 63 to wind the steel strand more smoothly.

[0054] When the steel strand is wound to a tensioned state, each line wheel is rotated while the steel strand is being wound. At this time, the winding shaft 62 unwinds the steel strand, and the rubber wheel two 67 is locked by the ratchet wheel 68 and the pawl 69. At this time, it is difficult for the rubber wheel one 65 to drive the rubber wheel two 67 to rotate, and the rubber wheel one 65 needs to overcome the friction force given by the rubber wheel two 67 to rotate, which is convenient for the winding roller 63 to unwind slowly.

[0055] Refer to Figure 7 and Figure 8 , the clamping mechanism 4 includes a clamping block one 41 fixedly connected to the side wall of the spool 21. A clamping block two 42 is provided on the side of the clamping block one 41 facing away from the spool 21. The clamping block one 41 and the clamping block two 42 are connected by a fastener 43. Elastic plates 44 are slidably connected to the side surfaces of the clamping block one 41 and the clamping block two 42 close to each other. The side surfaces of the two elastic plates 44 facing away from each other are both inclined surfaces one that gradually incline in the direction of approaching each other along the direction of approaching the through hole 211.

[0056] The side surfaces of the clamping block 1 41 and the clamping block 2 42 that are close to each other are both inclined planes 2 that gradually tilt toward the direction of approaching each other along the direction close to the through hole 211, one inclined plane 1 corresponds to one inclined plane 2, and the inclined planes 1 and 2 are in contact with each other. A mounting block 45 is fixedly connected to each inclined plane 1, and a mounting groove 411 is provided on each inclined plane 2. A spring 46 is provided in each mounting groove 411, and one end of the spring 46 abuts against the mounting block 45, and the other end abuts against a side wall of the mounting groove 411.

[0057] After one end of the steel strand is clamped between the two elastic plates 44, during the process of the bobbin 21 winding the steel strand, the steel strand wound on the bobbin 21 will push a section of the steel strand connected to the clamping mechanism 4 toward the bobbin 21, and at this time, the steel strand connected to the clamping mechanism 4 drives the pair of elastic plates 44 to move toward the direction close to the through hole 211 through friction. That is, the steel strand is subjected to a pulling force toward the direction close to the through hole 211, and under the influence of the first and second inclined planes, the two elastic plates 44 will further clamp the steel strand toward each other, thereby reinforcing the connection between the steel strand and the clamping mechanism 4.

[0058] The fastener 43 includes screws 431 fixedly connected to both ends of the clamping block 1 41 , each screw 431 is arranged in a direction close to the clamping block 2 42 , each screw 431 passes through the clamping block 2 42 and is threadedly connected with a nut 432 , and the nut 432 is tightly against a side of the clamping block 2 42 away from the clamping block 1 41 .

[0059] The present application also discloses a testing method for a steel strand strength testing device, which includes the following steps when performing a segmented strength test on a rolled steel strand: S1. Wind one end of the rolled steel strand around the bobbin 21 of one of the driving mechanisms 2 in turn, then connect it to the testing mechanism 3, and then wind it around the bobbin 21 of another driving mechanism 2 to reel up the tested steel strand.

[0060] S2. Rotate the rotating block 55 in each driving mechanism 2 so that the push rod 56 gradually enters between the two limiting plates 26, and then rotate the cap 54 in each driving mechanism 2 so that the lead screw 53 rotates and drives the push rod 56 to gradually press the steel strands around the warp shaft 21 in the direction close to the bobbin 21.

[0061] S3. Lock each spool 21 through the locking assembly 23, start the testing mechanism 3, push and pull the steel strands between the two driving mechanisms 2, and thus perform a strength test.

[0062] S4. After the steel strand between the two driving mechanisms 2 is tested, reverse-rotate the cap 54 and the rotating block 55 to disengage the push rod 56 from between the two limiting plates 26. At the same time, start the rotation of the two spools 21 to disengage the steel strand between the two driving mechanisms 2 from between the two driving mechanisms 2, and test the next section of the steel strand entering between the two driving mechanisms 2.

[0063] When performing a strength test on a single section of steel strand, the following steps are included: S1. Connect a single section of steel strand to the testing mechanism 3. Then, pass one end of the steel strand through the transition hole 631 on the winding roller 63, and then through the through hole 211 on one of the spools 21 and be clamped and fixed by the clamping mechanism 4. Pass the other end of the steel strand through the through hole 211 on the other spool 21 and be clamped and fixed by the clamping mechanism 4.

[0064] S2. Start the winding motor 64. The winding roller 63 winds the steel strand until the steel strand is in a tensioned state. During the winding process of the winding roller 63, the first rubber wheel 65 drives the second rubber wheel 67 to rotate.

[0065] S3. Rotate the rotating block 55 to drive the push rod 56 to move towards between the two limiting plates 26. One end of the steel strand is clamped in the card slot 562 on the push rod 56. The movement of the push rod 56 pushes the steel strand near the detection mechanism towards the clamping mechanism 4 until the end of the through hole 211 far from the clamping mechanism 4 of the steel strand is located between the through hole 211 and the clamping mechanism 4.

[0066] S4. Start the two driving parts simultaneously to drive each spool 21 to wind the steel strand. The steel strand pulls the winding roller 63 to gradually unwind the steel strand. At this time, the second rubber wheel 67 is fixed, and the first rubber wheel 65 rotates relative to the second rubber wheel 67. The steel strand wound on each spool 21 binds the section of the steel strand clamped by the clamping mechanism 4 to the spool 21. During the winding process of the spool 21 on the steel strand, the section of the steel strand clamped by the clamping mechanism 4 gradually drives a pair of elastic plates 44 towards the through hole 211. The pair of elastic plates 44 are forced by the first inclined surface and the second inclined surface to clamp the steel strand towards each other.

[0067] S5. After the winding roller 63 finishes unwinding the steel strand, turn off the two driving parts, lock the spool 21 through the locking assembly 23, and start the testing mechanism 3 to perform a pushing and pulling test on the single section of steel strand.

[0068] The above are all the preferred embodiments of this application. The protection scope of this application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A steel strand strength testing device, characterized in that, The invention comprises two driving mechanisms (2), wherein a testing mechanism (3) is provided between the two driving mechanisms (2) for testing the strength of the steel strands by pushing the steel strands, each of the driving mechanisms (2) comprises a bobbin (21) for winding the steel strands, a driving member for driving the bobbin (21) to rotate forward and reversely, and a locking assembly (23) for locking the rotation of the bobbin (21), a through hole (211) penetrating the bobbin (21) is provided on the side wall at one end of the bobbin (21), and a locking assembly (23) is provided on the side wall at the other end of the bobbin (21). A clamping mechanism (4) is provided for clamping the steel strand; when testing the rolled steel strand in sections, one end of the unwound steel strand is sequentially wound around two driving mechanisms (2) and connected to the testing mechanism (3); when testing a single section of steel strand, each end of the steel strand connected to the testing mechanism (3) passes through a through hole (211) on a corresponding bobbin (21) and is clamped and fixed by the clamping mechanism (4), and then each bobbin (21) is driven to rotate until each end of the steel strand is wound around the corresponding bobbin (21).

2. The steel strand strength testing device according to claim 1, characterized in that, The bobbin (21) is provided with a guide mechanism (5), each end of the bobbin (21) is fixedly connected to a limiting plate (26), the guide mechanism (5) comprises a connecting block (51) connected to a limiting plate (26) near the through hole (211), the connecting block (51) being located on a side of the limiting plate (26) facing away from the bobbin (21), the connecting block (51) being rotatably connected to a rotating block (55) on a side of the connecting block (51) facing away from the bobbin (21), the rotating block (55) being threadedly connected to a push rod (56), and the connecting block (51) being connected to the connecting block (51). The limiting plate (26) is provided with a connecting hole (261), the connecting block (51) is provided with a sliding hole (511), one end of the push rod (56) is plugged into the sliding hole (511) and the connecting hole (261) in sequence, one end of the push rod (56) close to the spool (21) is provided with a clamping groove (562) for clamping with the steel strand, the inner side wall of the sliding hole (511) is fixedly connected with a guide block (57), the side wall of the push rod (56) is provided with a guide groove (561), and the guide block (57) is slidably connected to the guide groove (561).

3. The steel strand strength testing device according to claim 2, wherein, The connecting block (51) is slidably connected to the corresponding limiting plate (26) in a direction perpendicular to the axis of the spool (21); a pair of fixing blocks (52) are fixedly connected to a side of the limiting plate (26) close to the through hole (211) facing away from the spool (21); a lead screw (53) is rotatably connected between the pair of fixing blocks (52); the lead screw (53) passes through the connecting block (51) and is threadedly connected to the connecting block (51); and a cap (54) is fixedly connected to one end of the lead screw (53).

4. A steel strand strength testing device according to any one of claims 1-3, characterized in that, A tensioning mechanism (6) is provided between the testing mechanism (3) and one of the driving mechanisms (2), the tensioning mechanism (6) comprising a fixing plate (61), one side of the fixing plate (61) being rotatably connected to a winding shaft (62), one end of the winding shaft (62) being coaxially fixed with a winding roller (63), a winding motor (64) for driving the winding shaft (62) to rotate forward and reverse is mounted on the fixing plate (61), a transition hole (631) for plugging in a steel strand is provided on a side of the winding roller (63), and the winding roller (63) is used to wind up the steel strand plugged into the transition hole (631).

5. The steel strand strength testing device according to claim 4, characterized in that, A rubber wheel 1 (65) is coaxially fixed on the reel (62); an adjusting shaft (66) is rotatably connected to one side of the fixing plate (61); a rubber wheel 2 (67) is coaxially fixed on the adjusting shaft (66); the rubber wheel 1 (65) is in close contact with the rubber wheel 2 (67); a ratchet (68) is coaxially fixed on the adjusting shaft (66); a ratchet pawl (69) mounted in cooperation with the ratchet (68) is mounted on one side of the fixing plate (61) close to the ratchet (68); when the reel (63) reels the steel strand, the rubber wheel 1 (65) drives the rubber wheel 2 (67) to rotate; when the reel (62) unwinds the steel strand, the rubber wheel 2 (67) is locked by the ratchet pawl (69) of the ratchet (68).

6. The steel strand strength testing device according to claim 5, characterized in that, The clamping mechanism (4) comprises a clamping block 1 (41) fixedly connected to a side wall of the spool (21); a clamping block 2 (42) is provided on a side of the clamping block 1 (41) facing away from the spool (21); the clamping block 1 (41) and the clamping block 2 (42) are used to clamp the steel strand; the clamping block 1 (41) and the clamping block 2 (42) are connected via a fastener (43).

7. The steel strand strength testing device according to claim 6, characterized in that, The side surfaces of the clamping block 1 (41) and the clamping block 2 (42) that are close to each other are both slidably connected with an elastic plate (44), and the side surfaces of the two elastic plates (44) that are away from each other are both inclined surfaces 1 that are gradually inclined in a direction close to the through hole (211) toward each other, and the side surfaces of the clamping block 1 (41) and the clamping block 2 (42) that are close to each other are both inclined surfaces 2 that are gradually inclined in a direction close to the through hole (211) toward each other, and one inclined surface 1 corresponds to one inclined surface 2, and the inclined surfaces 1 and 2 are respectively connected. The two inclined surfaces are in contact with each other, and the side surfaces of the two elastic plates (44) facing away from each other are fixedly connected with a mounting block (45), and the side surfaces of the clamping block (41) and the clamping block (42) close to each other are provided with a mounting groove (411), and each mounting block (45) is slidably connected to a corresponding mounting groove (411), and a spring (46) is provided in each mounting groove (411), and one end of the spring (46) abuts against the mounting block (45), and the other end abuts against a side wall of the mounting groove (411).

8. A steel strand strength testing device according to claim 1, characterized in that, The driving mechanism (2) and the testing mechanism (3) are both installed on the workbench (1). The driving mechanism (2) includes two working plates (24) fixedly connected to the workbench (1). A working shaft (25) is rotatably connected between the two working plates (24). The wire spool (21) is coaxially fixed to the working shaft (25). The locking assembly (23) includes two racks (231) slidably connected vertically to one of the working plates (24). A gear (232) is engaged between the two racks (231). The gear (232) is rotatably connected to the working plate (24). One end of each rack (231) is fixedly connected to a locking rubber block (233). The working shaft (25) is located between the two locking rubber blocks (233). A hydraulic cylinder (234) for driving one of the racks (231) to lift is fixedly connected to the working plate (24).

9. A testing method for the steel strand strength testing device according to any one of claims 3-7, characterized in that, It includes the following steps: S1. One end of the coiled steel strand is sequentially wound around the wire spool (21) of one of the driving mechanisms (2), then connected to the testing mechanism (3), and then wound around the wire spool (21) of the other driving mechanism (2), and the tested steel strand is wound up after that. S2. Rotate the rotating block (55) in each driving mechanism (2) to make the push rod (56) gradually enter between the two limiting plates (26). Then rotate the cap (54) in each driving mechanism (2) to make the lead screw (53) rotate to drive the push rod (56) to gradually press the steel strand wound around the wire spool (21) in the direction close to the wire spool (21). S3. Lock each wire spool (21) through the locking assembly (23), start the testing mechanism (3), and push and pull the steel strand between the two driving mechanisms (2) to perform a strength test. S4. After the steel strand between the two driving mechanisms (2) is tested, rotate the cap (54) and the rotating block (55) in the reverse direction to make the push rod (56) disengage from between the two limiting plates (26). At the same time, start the two wire spools (21) to rotate, so that the steel strand between the two driving mechanisms (2) disengages from between the two driving mechanisms (2), and the next section of the steel strand entering between the two driving mechanisms (2) is tested.

10. A testing method for the steel strand strength testing device according to any one of claims 7, characterized in that, It includes the following steps: S1. Connect a single-section steel strand to the testing mechanism (3). Then, pass one end of the steel strand through the transition hole (631) on the winding roller (63), then through the through hole (211) on one of the wire spools (21) and be clamped and fixed by the clamping mechanism (4). Pass the other end of the steel strand through the through hole (211) on the other wire spool (21) and be clamped and fixed by the clamping mechanism (4). S2. Start the winding motor (64), and the winding roller (63) winds the steel strand until the steel strand is in a tensioned state. During the winding process of the winding roller (63), the rubber wheel one (65) drives the rubber wheel two (67) to rotate. S3. Rotate the rotating block (55) to drive the push rod (56) to move towards the space between the two limiting plates (26). One end of the steel strand is clamped with the clamping groove (562) on the push rod (56). The movement of the push rod (56) pushes the steel strand near the detection mechanism to move towards the clamping mechanism (4) until the end of the through hole (211) far from the clamping mechanism (4) where the steel strand is located is between the through hole (211) and the clamping mechanism (4). S4. Start the two driving parts simultaneously to drive each spool (21) to wind the steel strand. The steel strand pulls the unwinding roller (63) to gradually unwind the steel strand. At this time, the second rubber wheel (67) is fixed and the first rubber wheel (65) rotates relative to the second rubber wheel (67). The steel strand wound on each spool (21) binds the section of the steel strand clamped by the clamping mechanism (4) onto the spool (21). During the process of the spool (21) winding the steel strand, the section of the steel strand clamped by the clamping mechanism (4) gradually drives a pair of elastic plates (44) to move towards the through hole (211). The pair of elastic plates (44) are forced by the first inclined surface and the second inclined surface to clamp the steel strand towards each other. S5. After the unwinding roller (63) finishes unwinding the steel strand, turn off the two driving parts, lock the spool (21) through the locking component (23), and start the testing mechanism (3) to conduct a pushing and pulling test on a single section of the steel strand.

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