Steel wire rope performance testing equipment

Abstract

The invention belongs to the technical field of steel wire rope performance testing, and particularly relates to steel wire rope performance testing equipment which comprises a testing table, a winding frame is fixedly installed above one end of the testing table, a rotating shaft used for placing a steel wire rope reel is rotatably installed on the winding frame, and the end of the rotating shaft is in threaded connection with a threaded sleeve. Two sets of fixing frames are arranged in front of the guide wheel, one set of fixing frames is fixedly installed on the test table, one side of the other set of fixing frames is provided with a tension sensor, the tension sensor is fixedly connected with a first hydraulic oil cylinder, and the steel wire rope is cut off through the cutting knife, so that sampling of the steel wire rope is achieved. The distance between the two groups of fixing frames is fixed during sampling, so that the lengths of the steel wire ropes sampled every time are consistent, the sampling efficiency of the steel wire ropes is improved, meanwhile, the device is more diversified in function, and the sampling efficiency of the steel wire ropes is improved. Therefore, the steel wire rope testing efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of steel wire rope performance testing, in particular to a steel wire rope performance testing device. Background Art

[0002] Wire ropes are widely used in lifting, elevators, bridges, cableways and other fields. They carry huge weight and stress. Through tensile limit testing, it can be ensured that the wire rope will not break suddenly during use due to exceeding its bearing capacity, thus avoiding serious safety accidents. Therefore, the tensile limit test of wire ropes is a basic link to ensure project safety, improve equipment reliability and comply with laws and regulations.

[0003] The patent with publication number CN221038418U discloses a wire rope performance testing device, including a test bench and two groups of connecting sleeves. A fixed bench is fixedly installed on the test bench. The connecting sleeves include a fixed tube, a fixed clamp, and a screw rod. One group of connecting sleeves is fixedly installed on one side of the fixed inner body, and the outer side of the fixed tube of one group of connecting sleeves is located at the outer end of the force-bearing surface of the pressure sensor and is installed with a limit plate. The end of the fixed tube of the other group of connecting sleeves is fixedly connected to the piston rod of the oil cylinder. This scheme fixes the wire rope to be tested between the two groups of connecting sleeves, and pulls the other group of connecting sleeves by the piston rod on the oil cylinder to stretch the wire rope, and test whether the wire rope is broken and stretched. At the same time, the pulling force on the wire rope is detected by the pressure sensor to achieve rapid detection of the wire rope.

[0004] In the above scheme, before testing the steel wire rope, it is necessary to cut out a plurality of steel wire rope samples of the same length, and then test the plurality of steel wire rope samples one by one through the above device. In order to ensure that the steel wire rope samples are of the same length, the staff is required to measure and determine the size one by one, resulting in a large amount of time wasted in the early sampling of the steel wire rope, and reducing the testing efficiency of the steel wire rope. For this reason, the present invention provides a steel wire rope performance testing device. Summary of the invention

[0005] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a wire rope performance testing device described in the present invention includes a test bench, a winding frame is fixedly installed above one end of the test bench, a rotating shaft for placing a wire rope drum is rotatably installed on the winding frame, the end of the rotating shaft is screwed with a screw sleeve, and a guide wheel is also rotatably installed in front of the test bench, two groups of fixed frames are arranged in front of the guide wheel, one group of fixed frames is fixedly installed on the test bench, and a tension sensor is arranged on one side of the other group of fixed frames, and the tension sensor is fixedly connected to the first hydraulic cylinder, and a slider is connected to the bottom of the other group of fixed frames, and the slider is slidably connected to the guide rail, and the guide rail is fixedly installed on the test bench The fixed frame includes a base, a base on one group of fixed frames is fixedly installed on the test bench, one side of the base of the other group of fixed frames is fixedly connected to the tension sensor, the lower end of the base of the other group of fixed frames is fixedly connected to the slider, a fixed seat installed in the base, a support frame fixedly installed on the fixed frame, a third hydraulic cylinder fixedly installed on the support frame, a pressure plate fixedly connected to the lower end of the third hydraulic cylinder, a limit plate fixedly installed on the support frame of the other group of fixed frames, a cutting knife is movably installed in the support frame on one group of fixed frames, the upper end of the cutting knife is fixedly connected to the piston rod of the second hydraulic cylinder, and the cylinder body of the second hydraulic cylinder is fixedly installed on the support frame; The steel wire rope pulled out from the steel wire rope drum is fixed between two sets of fixed frames, and the steel wire rope is cut by a cutting knife to sample the steel wire rope, and then the first fixed frame is pulled by the first hydraulic cylinder to directly test the sample. Since the distance between the two sets of fixed frames is fixed during sampling, the length of the steel wire rope sampled each time is consistent, which not only improves the sampling efficiency of the steel wire rope, but also makes the functions of the device more diverse, thereby improving the efficiency of steel wire rope testing.

[0007] Preferably, guide grooves are provided on both sides of the support frame on a set of fixed frames, and guide blocks are provided on both sides of the cutting knife, and the guide blocks are slidably connected to the guide grooves; The cooperation between the guide groove and the guide block guides the movement of the cutting knife.

[0008] Preferably, the fixed seat includes a conversion seat, the conversion seat is located in the base, both ends of the conversion seat are fixedly connected to support shafts, the support shafts are rotatably connected to the base, a group of support shafts are rotatably mounted with gears, one side of the gear is provided with a ratchet, the ratchet is fixedly sleeved on a group of support shafts, four groups of pawls are distributed around the ratchet, the lower end of the pawl is clamped with the ratchet, the upper end of the pawl is hinged with the gear, one end of the pressure plate is fixedly connected with an L-shaped rack, the L-shaped rack meshes with the gear, a guide hole is opened on the base, the L-shaped rack is movably plugged into the guide hole, and a limit groove for positioning the wire rope is opened at equal angles on the outer ring of the conversion seat; The steel wire rope placed on the conversion seat will rotate with the test piece. The centrifugal force generated by the rotation will cause the steel wire rope to be thrown to one side of the fixed frame until the other set of limit grooves on the conversion seat is directly below the pressure plate. At this time, the staff does not need to remove the tested steel wire rope from the fixed frame, but can directly pull the steel wire rope to sample the next set of steel wire ropes, which improves the efficiency of steel wire rope sampling and indirectly improves the testing efficiency of steel wire ropes.

[0009] Preferably, the fixed seat further includes a damping mechanism, which includes six groups of guide pillars, which are all slidably connected to the limit plate, a spring sleeved on the guide pillars, six groups of through holes are opened at equal angles on the limit plate, and the six groups of through holes are respectively inserted into the six groups of guide pillars, five groups of first teeth are installed at equal angles on the end of a group of support shafts, five groups of second teeth are installed at equal angles on one side of the limit plate, the second teeth bite the first teeth, the six groups of guide pillars are distributed at equal angles on one side of the fixed seat, and one end of the guide pillar is fixedly connected to one side of the fixed seat; The bite force between the first teeth and the second teeth prevents the conversion seat from rotating easily, ensuring that the conversion seat will not deflect when the pressure plate is pressed down.

[0010] The beneficial effects of the present invention are as follows: 1. The steel wire rope pulled out from the steel wire rope drum is fixed between two sets of fixed frames, and the steel wire rope is cut by a cutting knife to sample the steel wire rope, and then the first fixed frame is pulled by the first hydraulic cylinder to directly test the sample. Since the distance between the two sets of fixed frames is fixed during sampling, the length of the steel wire rope sampled each time is consistent, which not only improves the sampling efficiency of the steel wire rope, but also makes the function of the device more diverse, thereby improving the efficiency of steel wire rope testing.

[0011] 2. During the pressing process of the pressing plate, the pressing plate drives the L-shaped rack to slide downward along the guide hole. At the same time, the L-shaped rack drives the gear to rotate, and the gear drives the three sets of ratchets to rotate together. The ratchets cannot drive the ratchet to rotate. When the teeth on the L-shaped rack stagger the gear, the pressing plate continues to move downward for a certain distance until the pressing plate presses the wire rope, so that the wire rope is fixed in the limit groove. When it is necessary to release the fixing of the pressing plate to the wire rope, the pressing plate is driven to move upward, and the L-shaped rack moves upward with the pressing plate. When the pressing plate is away from the conversion seat for a certain distance, the teeth on the L-shaped rack are The moving gear rotates, and the three sets of pawls will drive the ratchet together with the corresponding support shaft to rotate, and then the support shaft drives the conversion seat to rotate, and the wire rope placed on the conversion seat will rotate together. The centrifugal force generated by the rotation causes the wire rope to be thrown to one side of the fixed frame until the other set of limit grooves on the conversion seat is located directly under the pressure plate. The staff does not need to remove the tested wire rope from the fixed frame, and can directly pull the wire rope to sample the next group of wire ropes, which improves the efficiency of wire rope sampling and indirectly improves the testing efficiency of the wire rope.

[0012] 3. When the support shaft drives the conversion seat to rotate together, the support shaft drives the five groups of first teeth to rotate together. The first teeth will squeeze the second teeth, so that the second teeth together with the limit plate move along the six groups of guide pillars away from the fixed seat, and the limit plate compresses the spring until the first teeth and the second teeth are engaged again under the rebound force of the spring. The engagement force between the first teeth and the second teeth prevents the conversion seat from rotating easily, ensuring that the conversion seat will not deflect when the pressure plate is pressed down. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention will be further described below in conjunction with the accompanying drawings.

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the assembly of the winding frame, rotating shaft, wire rope drum, screw sleeve and guide wheel of the present invention.

[0016] Figure 3 It is a schematic diagram of the combination of the fixing frame, the tension sensor, the sliding block, the cutting knife, the second hydraulic cylinder and the limit plate of the present invention.

[0017] Figure 4 It is a schematic diagram of the support frame and cutting knife combination of the present invention.

[0018] Figure 5 It is a schematic diagram of the combination of the push plate and the limiting rack of the present invention.

[0019] Figure 6 It is a schematic diagram of the cross-section of the base, the fixing seat and the pressing plate assembly of the present invention.

[0020] Figure 7 It is a schematic diagram of the combination of the base and the L-shaped rack of the present invention.

[0021] Figure 8 It is a schematic diagram of the assembly of the base, conversion base, rotating shaft and damping mechanism of the present invention.

[0022] Fig. 9 This is a schematic diagram of the combination of the rotating shaft and the damping mechanism of the present invention from another perspective.

[0023] In the figure: 1, test bench; 2, winding frame; 3, rotating shaft; 4, wire rope drum; 5, screw sleeve; 6, guide wheel; 7, fixed frame; 8, tension sensor; 9, first hydraulic cylinder; 10, slider; 11, guide rail; 12, cutting knife; 121, guide block; 13, second hydraulic cylinder; 14, limit plate; 701, base; 7011, guide hole; 702, fixed seat; 703, support frame; 704, support frame; 705, support frame; 706, support frame; 707, support frame; 708, support frame; 709, support frame; 710, support frame; 711, support frame; 712, support frame; 713, support frame; 714, support frame; 715, support frame; 716, support frame; 717, support frame; 718, support frame; 719, support frame; 720, support frame; 721, support frame; 722, support frame; 723, support frame; 724, support frame; 725, support frame; 726, support frame; 727, support frame; 728, support frame; 729, support frame; 730, support frame; 731, support frame; 732, support frame; 733, support frame; 734, support frame; 735, support frame; 736, support frame; 737, support frame; 738, support frame; 739, support frame; 740, support frame; 741, support frame; 742, support frame; 743, support frame; 744, support frame; 745, support frame; 746, support frame; 747, support frame; 748, support frame; 749, support frame; 749, support frame; 031, guide groove; 704, pressure plate; 7041, L-shaped rack; 705, third hydraulic cylinder; 7021, conversion seat; 211, limit groove; 7022, support shaft; 221, first tooth; 7023, gear; 7024, ratchet; 7025, pawl; 7026, damping mechanism; 261, guide column; 262, limit plate; 21, second tooth; 22, through hole; 263, spring. DETAILED DESCRIPTION

[0024] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0025] Embodiment 1: Figures 1 to 4 As shown, a wire rope performance testing device described in an embodiment of the present invention comprises a test bench 1, a winding frame 2 is fixedly installed above one end of the test bench 1, a rotating shaft 3 for placing a wire rope drum 4 is rotatably installed on the winding frame 2, a screw sleeve 5 is screwed on the end of the rotating shaft 3, a guide wheel 6 is rotatably installed in front of the test bench 1, two groups of fixed frames 7 are arranged in front of the guide wheel 6, one group of fixed frames 7 is fixedly installed on the test bench 1, a tension sensor 8 is arranged on one side of the other group of fixed frames 7, the tension sensor 8 is fixedly connected to the first hydraulic cylinder 9, a slider 10 is connected to the bottom of the other group of fixed frames 7, the slider 10 is slidably connected to the guide rail 11, the guide rail 11 is fixedly installed on the test bench 1, the fixed frames 7 include a base 701, and a base 7 on one group of fixed frames 7 is provided. 01 is fixedly installed on the test bench 1, one side of the base 701 of another group of fixed frames 7 is fixedly connected to the tension sensor 8, the lower end of the base 701 of another group of fixed frames 7 is fixedly connected to the slider 10, a fixed seat 702 installed in the base 701, a support frame 703 fixedly installed on the fixed frame 7, a third hydraulic cylinder 705 fixedly installed on the support frame 703, a pressure plate 704 fixedly connected to the lower end of the third hydraulic cylinder 705, a limiting plate 14 is fixedly installed on the support frame 703 of another group of fixed frames 7, a cutting knife 12 is movably installed in the support frame 703 on one group of fixed frames 7, the upper end of the cutting knife 12 is fixedly connected to the piston rod of the second hydraulic cylinder 13, and the cylinder body of the second hydraulic cylinder 13 is fixedly installed on the support frame 703.

[0026] Specifically, the signal output end and the signal input end of the tension sensor 8 are electrically connected to the display screen, and the display screen is installed on the test bench 1. In the initial state, the pressure plate 704 is away from the fixing seat 702, the fixing frame 7 close to the tension sensor 8 is the first fixing frame, and the fixing frame 7 close to the guide wheel 6 is the second fixing frame. When it is necessary to test the performance of the wire rope, the wire rope drum 4 with the wound wire rope is inserted into the rotating shaft 3, and then the screw sleeve 5 is screwed on the end of the rotating shaft 3 to fix the wire rope drum 4, and then the wire rope on the wire rope drum 4 is dragged to make the wire rope coiled through the guide wheel 6, and then the wire rope passes through the two sets of fixing frames 7, and The end of the wire rope is made to be against the limit plate 14, and then the third hydraulic cylinder 705 on the first fixed frame is started, and the third hydraulic cylinder 705 pushes the corresponding pressing plate 704 to move downward, so that the pressing plate 704 presses down the end of the wire rope to fix the end of the wire rope, and then the wire rope reel 4 is driven by the motor to reel in the wire rope so that the pulled wire rope is straightened, and then the third hydraulic cylinder 705 on the second fixed frame is started again, so that the third hydraulic cylinder 705 pushes the pressing plate 704 to press the wire rope again, and at this time the second hydraulic cylinder 13 is started, and the second hydraulic cylinder 13 pushes the cutting knife 12 to move downward, so that the wire rope is cut by the cutting knife 12, and then the cutting is withdrawn. The knife 12 is used to sample the steel wire rope, and the first hydraulic cylinder 9 is started. The first hydraulic cylinder 9 pulls the tension sensor 8 together with the first fixed frame and the slide block 10 to move. The slide block 10 slides along the guide rail 11. Since the second fixed frame is fixed, the steel wire rope between the two sets of fixed frames 7 is pulled. At this time, the reaction force of the steel wire rope being pulled is on the tension sensor 8. The tension sensor 8 transmits the detected data to the display screen of the test bench 1 until the steel wire rope is broken. Then, the first fixed frame is pushed by the first hydraulic cylinder 9 to return the first fixed frame to the initial position, and the two sets of fixed frames 7 are released to fix the tested steel wire rope. The wire rope is then removed from the two sets of fixing frames 7, and then the wire rope is continued to be pulled, and the above operation is repeated to realize the ultimate tensile test of the wire rope. Compared with the prior art, the wire rope pulled out from the wire rope drum 4 is fixed between the two sets of fixing frames 7, and the wire rope is cut by the cutting knife 12 to realize the sampling of the wire rope, and then the first fixing frame is pulled by the first hydraulic cylinder 9 to realize the direct test of the sample. Since the distance between the two sets of fixing frames 7 is fixed during sampling, the length of the wire rope sampled each time is consistent, which not only improves the sampling efficiency of the wire rope, but also makes the function of the device more diverse, thereby improving the testing efficiency of the wire rope.

[0027] Furthermore, guide grooves 7011 are provided on both sides of the support frame 703 on a set of fixing frames 7 , and guide blocks 121 are provided on both sides of the cutting knife 12 , and the guide blocks 121 are slidably connected to the guide grooves 7031 .

[0028] Specifically, when the cutting knife 12 is cutting the steel wire rope, the cutting knife 12 drives the two groups of guide blocks 121 to slide along the two groups of guide grooves 7031 respectively, and the cooperation between the guide grooves 7031 and the guide blocks 121 guides the movement of the cutting knife 12 .

[0029] Embodiment 2: Figures 5 to 7 As shown, in contrast to Example 1, another embodiment of the present invention is as follows: the fixed seat 702 includes a conversion seat 7021, the conversion seat 7021 is located in the base 701, both ends of the conversion seat 7021 are fixedly connected to support shafts 7022, the support shafts 7022 are rotatably connected to the base 701, a group of support shafts 7022 are rotatably mounted with gears 7023, one side of the gear 7023 is provided with a ratchet 7024, and the ratchet 7024 is fixedly sleeved on a group of support shafts 7022, Four groups of pawls 7025 are distributed around the ratchet 7024, the lower ends of the pawls 7025 are clamped with the ratchet 7024, the upper ends of the pawls 7025 are hinged to the gear 7023, one end of the pressure plate 704 is fixedly connected to an L-shaped rack 7041, the L-shaped rack 7041 meshes with the gear 7023, a guide hole 7012 is opened on the base 701, the L-shaped rack 7041 is movably inserted into the guide hole 7011, and a limiting groove 211 for positioning the wire rope is opened at an equal angle on the outer circle of the conversion seat 7021.

[0030] Specifically, the ratchet 7024 is made of magnet material, and the ratchet 7024 has a certain adsorption force on the pawl 7025. When the pressing plate 704 is pressed down, the pressing plate 704 drives the L-shaped rack 7041 to slide downward along the guide hole 7011, and at the same time, the L-shaped rack 7041 drives the gear 7023 to rotate, and the gear 7023 drives the three groups of pawls 7025 to rotate together, and the rotation direction is downward. Figure 6 The middle arrow indicates the direction. At this time, the teeth on the ratchet 7024 cannot hinder the pawl 7025, and the pawl 7025 cannot drive the ratchet 7024 to rotate. When the teeth on the L-shaped rack 7041 are staggered from the gear 7023, the pressure plate 704 continues to move downward for a certain distance until the pressure plate 704 presses on the wire rope, so that the wire rope is fixed in the limiting groove 211. When it is necessary to release the fixation of the wire rope by the pressure plate 704, the pressure plate 704 is driven to move upward, and the L-shaped rack 7041 moves upward together with the pressure plate 704. When the pressure plate 704 is away from the conversion seat 7021 for a certain distance, the teeth on the L-shaped rack 7041 drive the gear 7023 to rotate, and the rotation direction is attached below. Figure 5The middle arrow indicates the direction. At this time, the teeth on the ratchet 7024 will hinder the pawl 7025. The three groups of pawls 7025 will drive the ratchet 7024 to rotate together with the corresponding support shaft 7022, and then the support shaft 7022 drives the conversion seat 7021 to rotate together. During the rotation of the conversion seat 7021, the wire rope placed on the conversion seat 7021 will rotate together. The centrifugal force generated by the rotation causes the wire rope to be thrown to one side of the fixed frame 7 until the other group of limit grooves 211 on the conversion seat 7021 is located directly below the pressure plate 704. At this time, the staff does not need to remove the tested wire rope from the fixed frame 7, and can directly pull the wire rope to sample the next group of wire ropes, thereby improving the efficiency of wire rope sampling and indirectly improving the testing efficiency of the wire rope.

[0031] like Figure 8 and Fig. 9 As shown, the fixed seat 702 also includes a damping mechanism 7026, which includes six groups of guide pillars 261, and the six groups of guide pillars 261 are all slidably connected to the limit plate 262, a spring 263 is sleeved on the guide pillars 261, and six groups of through holes 22 are opened at equal angles on the limit plate 262, and the six groups of through holes 22 are respectively inserted into the six groups of guide pillars 261, and five groups of first teeth 221 are installed at equal angles on the end of a group of support shafts 7022, and five groups of second teeth 21 are installed at equal angles on one side of the limit plate 262, and the second teeth 21 bite the first teeth 221, and the six groups of guide pillars 261 are distributed at equal angles on one side of the fixed seat 702, and one end of the guide pillar 261 is fixedly connected to one side of the fixed seat 702.

[0032] Specifically, when the support shaft 7022 drives the conversion seat 7021 to rotate together, the support shaft 7022 drives the five groups of first teeth 221 to rotate together, and the first teeth 221 will squeeze the second teeth 21, so that the second teeth 21 together with the limiting plate 262 move along the six groups of guide pillars 261 in the direction away from the fixed seat 702, and the limiting plate 262 compresses the spring 263 until the first teeth 221 and the second teeth 21 are engaged again under the rebound force of the spring 263. The engaging force between the first teeth 221 and the second teeth 21 prevents the conversion seat 7021 from rotating easily, thereby ensuring that the conversion seat 7021 will not deflect when the pressure plate 704 is pressed down.

[0033] Working principle: insert the wire rope drum 4 with the wound wire rope on the rotating shaft 3, then screw the screw sleeve 5 on the end of the rotating shaft 3 to fix the wire rope drum 4, and then drag the wire rope on the wire rope drum 4 to make the wire rope coiled around the guide wheel 6, and then the wire rope passes through the two sets of fixing frames 7, and the end of the wire rope is made to be close to the limit plate 14, and then start the third hydraulic cylinder 705 on the first fixing frame, the third hydraulic cylinder 705 pushes the corresponding pressure plate 704 to move downward, so that the pressure plate 704 presses down the end of the wire rope to fix the end of the wire rope, and then the wire rope drum 4 is driven by the motor to wind up the wire rope so that the pulled wire rope is straightened, and then start the third hydraulic cylinder 705 on the second fixing frame again, so that the third hydraulic cylinder 705 pushes the pressure plate 704 to press the wire rope again, and then start the second hydraulic cylinder 13, the second hydraulic cylinder 13 pushes the cutting The knife 12 moves downward, so that the steel wire rope is cut by the cutting knife 12, and then the cutting knife 12 is withdrawn to sample the steel wire rope, and the first hydraulic cylinder 9 is started. The first hydraulic cylinder 9 pulls the tension sensor 8 together with the first fixed frame and the slide block 10 to move, and the slide block 10 slides along the guide rail 11. Since the second fixed frame is fixed, the steel wire rope between the two sets of fixed frames 7 is pulled. At this time, the reaction force of the pulling of the steel wire rope is on the tension sensor 8, and the tension sensor 8 transmits the detected data to the display screen of the test bench 1 until the steel wire rope is broken, and then the first fixed frame is pushed by the first hydraulic cylinder 9 to return the first fixed frame to the initial position, and the two sets of fixed frames 7 are released to fix the tested steel wire rope, and the tested steel wire rope is removed from the two sets of fixed frames 7, and then the steel wire rope is continued to be pulled, and the above operation is repeated to realize the ultimate tensile test of the steel wire rope; During the pressing process of the pressing plate 704, the pressing plate 704 drives the L-shaped rack 7041 to slide downward along the guide hole 7011. At the same time, the L-shaped rack 7041 drives the gear 7023 to rotate, and the gear 7023 drives the three groups of ratchets 7025 to rotate together. The rotation direction is downward. Figure 6 The middle arrow indicates the direction. At this time, the teeth on the ratchet 7024 cannot hinder the pawl 7025, and the pawl 7025 cannot drive the ratchet 7024 to rotate. When the teeth on the L-shaped rack 7041 are staggered from the gear 7023, the pressure plate 704 continues to move downward for a certain distance until the pressure plate 704 presses on the wire rope, so that the wire rope is fixed in the limiting groove 211. When it is necessary to release the fixation of the wire rope by the pressure plate 704, the pressure plate 704 is driven to move upward, and the L-shaped rack 7041 moves upward together with the pressure plate 704. When the pressure plate 704 is away from the conversion seat 7021 for a certain distance, the teeth on the L-shaped rack 7041 drive the gear 7023 to rotate, and the rotation direction is attached below. Figure 5The middle arrow indicates the direction. At this time, the teeth on the ratchet 7024 will hinder the pawl 7025. The three groups of pawls 7025 will drive the ratchet 7024 and the corresponding support shaft 7022 to rotate together. Then the support shaft 7022 drives the conversion seat 7021 to rotate together. During the rotation of the conversion seat 7021, the steel wire rope placed on the conversion seat 7021 will rotate together. The centrifugal force generated by the rotation causes the steel wire rope to be thrown to one side of the fixing frame 7 until the other group of limit grooves 211 on the conversion seat 7021 is located directly below the pressure plate 704. When the support shaft 7022 drives the conversion seat 7021 to rotate together, the support shaft 7022 drives the five groups of first teeth 221 to rotate together, and the first teeth 221 will squeeze the second teeth 21, so that the second teeth 21 together with the limit plate 262 move along the six groups of guide pillars 261 in the direction away from the fixed seat 702, and the limit plate 262 compresses the spring 263 until the first teeth 221 and the second teeth 21 are engaged again under the rebound force of the spring 263, and the engagement force between the first teeth 221 and the second teeth 21 prevents the conversion seat 7021 from rotating easily.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A steel wire rope performance testing device, comprising a test bench (1), characterized in that: A winding frame (2) is fixedly installed above one end of the test bench (1), a rotating shaft (3) for placing a wire rope drum (4) is rotatably installed on the winding frame (2), and a threaded sleeve (5) is screwed to the end of the rotating shaft (3). A guide wheel (6) is also rotatably installed in front of the test bench (1), and two groups of fixed frames (7) are arranged in front of the guide wheel (6), one group of the fixed frames (7) is fixedly installed on the test bench (1), and a tension sensor (8) is arranged on one side of the other group of the fixed frames (7), and the tension sensor (8) is fixedly connected to the first hydraulic cylinder (9). A slider (10) is connected to the bottom of the other group of the fixed frames (7), and the slider (10) is slidably connected to a guide rail (11), and the guide rail (11) is fixedly installed on the test bench (1); The fixing frame (7) comprises: A base (701), wherein the base (701) on one group of the fixing frames (7) is fixedly mounted on the test bench (1), one side of the base (701) on another group of the fixing frames (7) is fixedly connected to the tension sensor (8), and the lower end of the base (701) on another group of the fixing frames (7) is fixedly connected to the slider (10); A fixing seat (702) installed in the base (701); A support frame (703) fixedly mounted on the fixing frame (7); A third hydraulic cylinder (705) fixedly mounted on the support frame (703); A pressure plate (704) fixedly connected to the lower end of the third hydraulic cylinder (705); A limit plate (14) is fixedly mounted on the support frame (703) of another group of the fixed frames (7); a cutting knife (12) is movably mounted in the support frame (703) on one group of the fixed frames (7); the upper end of the cutting knife (12) is fixedly connected to the piston rod of the second hydraulic cylinder (13); and the cylinder body of the second hydraulic cylinder (13) is fixedly mounted on the support frame (703).

2. A steel wire rope performance testing device according to claim 1, characterized in that: A support frame (703) on a set of the fixed frames (7) is provided with guide grooves (7031) on both sides, and a guide block (121) is provided on both sides of the cutting knife (12), and the guide block (121) is slidably connected to the guide groove (7031).

3. A steel wire rope performance testing device according to claim 2, characterized in that: The fixing seat (702) comprises: A conversion seat (7021), the conversion seat (7021) being located inside the base (701); Both ends of the conversion seat (7021) are fixedly connected to support shafts (7022), and the support shafts (7022) are rotatably connected to the base (701); A group of gears (7023) are rotatably mounted on the support shaft (7022); A ratchet (7024) is provided on one side of the gear (7023), and the ratchet (7024) is fixedly sleeved on a set of the support shafts (7022); Four groups of ratchet pawls (7025) are distributed around the ratchet wheel (7024); the lower ends of the ratchet pawls (7025) are clamped on the ratchet wheel (7024); and the upper ends of the ratchet pawls (7025) are hinged on the gear (7023).

4. A steel wire rope performance testing device according to claim 3, characterized in that: An L-shaped rack (7041) is fixedly connected to one end of the pressing plate (704), and the L-shaped rack (7041) meshes with the gear (7023).

5. A steel wire rope performance testing device according to claim 4, characterized in that: The base (701) is provided with a guide hole (7012), and the L-shaped rack (7041) is movably plugged into the guide hole (7011).

6. A steel wire rope performance testing device according to claim 5, characterized in that: The outer ring of the conversion seat (7021) is provided with limit grooves (211) at equal angles for positioning the steel wire rope.

7. A steel wire rope performance testing device according to claim 6, characterized in that: The fixing seat (702) further comprises a damping mechanism (7026), wherein the damping mechanism (7026) comprises six groups of guide pillars (261); The six groups of guide pillars (261) are all slidably connected to the limit plate (262); A spring (263) sleeved on the guide post (261).

8. A steel wire rope performance testing device according to claim 7, characterized in that: Six groups of through holes (22) are formed at equal angles on the limiting plate (262), and the six groups of through holes (22) are respectively plugged into the six groups of guide pillars (261).

9. A steel wire rope performance testing device according to claim 8, characterized in that: Five groups of first teeth (221) are installed at equal angles on the end of a group of the support shafts (7022), and five groups of second teeth (21) are installed at equal angles on one side of the limit plate (262), wherein the second teeth (21) engage with the first teeth (221).

10. A steel wire rope performance testing device according to claim 9, characterized in that: The six groups of guide pillars (261) are distributed at equal angles on one side of the fixing seat (702), and one end of the guide pillar (261) is fixedly connected to one side of the fixing seat (702).

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