A tensile strength test device for ultra-high molecular weight polyethylene fiber rope

Abstract

The present invention relates to the field of mechanical testing, and in particular to a device for testing the tensile strength of an ultra-high molecular weight polyethylene fiber rope. The technical problem is that the current testing device is not effective enough when testing the fiber rope, and the test is not sufficient and comprehensive enough, which leads to poor test results. A device for testing the tensile strength of an ultra-high molecular weight polyethylene fiber rope comprises an outer frame, a fixed plate is fixedly connected to one side of the inner wall of the outer frame, and a first anchor assembly is provided in the first circular hole of the fixed plate. The present invention drives an electric slider through an electric slide rail to move the limit sleeve and the threaded ring together. The movement of the limit sleeve causes the tightening sleeve to apply tension to the fiber rope, thereby testing the tensile strength. The movement of the threaded ring causes the random gear ring to rotate. The rotation of the random gear ring causes the four fiber ropes to be twisted and reset at different times, thereby making the test of the fiber rope more diverse, thereby better testing the tensile strength of the fiber rope.

Description

Technical Field

[0001] The invention relates to the field of mechanical testing, in particular to a device for testing the tensile strength of an ultra-high molecular weight polyethylene fiber rope. Background Art

[0002] Ultra-high molecular weight polyethylene fiber rope is a material with excellent performance. It is suitable for many industries due to its high strength and good wear resistance. In the last step of producing fiber rope, the staff needs to conduct a tensile strength test on the fiber rope. During the test, the staff usually twists the fiber rope while pulling it, making the fiber rope test more diverse to achieve the purpose of effective testing.

[0003] In actual situations when fiber ropes are used in various industries, fiber ropes are sometimes instantly tightened and cracked, and current testing devices are not convenient for intermittently generating instantaneous tension on fiber ropes when testing them, which results in the test being not effective enough. In addition, in practice, fiber ropes are sometimes stretched at multiple angles, and existing testing devices are not convenient for intermittently changing the force direction of the fiber ropes during tension tests, which results in the test being not sufficient and comprehensive enough, resulting in poor results in the tensile test of the fiber ropes. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings, the present invention provides an ultra-high molecular weight polyethylene fiber rope tensile strength testing device, which can intermittently generate instantaneous tension while pulling the fiber rope to make the test more effective, and can intermittently change the force direction of the fiber rope to make the test more sufficient and comprehensive, thereby enhancing the tensile test effect.

[0005] The technical implementation scheme of the present invention is: a tensile strength testing device for ultra-high molecular weight polyethylene fiber rope, comprising an outer frame, a fixed plate fixedly connected to one side of the inner wall of the outer frame, four first circular holes evenly opened on the fixed plate, a first anchor assembly is arranged in the first circular holes of the fixed plate, a stretching mechanism is arranged on the outer frame, a movable plate is arranged on the stretching mechanism, a second anchor assembly is arranged on the movable plate, four fiber ropes are arranged between the first anchor assembly and the second anchor assembly, a twisting mechanism is arranged on the stretching mechanism, the stretching mechanism is used to pull the four fiber ropes, and the twisting mechanism is used to randomly twist the four fiber ropes at different angles.

[0006] More preferably, the stretching assembly includes an electric slide rail, which is fixedly connected to the bottom of one side of the outer frame away from the fixed plate, an electric slider is slidably connected to the electric slide rail, a support frame is fixedly connected to the electric slider, a limiting sleeve is fixedly connected to the support frame, a sliding rod 1 is slidably connected to the limiting sleeve, a scale bar is provided on the sliding rod 1, the sliding rod 1 is horizontally arranged, a compression spring is connected between the end of the sliding rod 1 away from the fixed plate and the limiting sleeve, the end of the sliding rod 1 close to the fixed plate is fixedly connected to a movable plate, four second circular holes are evenly opened on the movable plate, and a second anchor assembly is provided on the second circular hole of the movable plate.

[0007] More preferably, an observation hole is provided on the limiting sleeve.

[0008] More preferably, the first anchor assembly includes a tightening sleeve one, four of the tightening sleeves are respectively fixedly connected to the four first circular holes of the fixing plate, one end of the four fiber ropes respectively passes through the four tightening sleeves one, the four tightening sleeves one are all threadedly connected with a threaded sleeve one, and the four threaded sleeves one fix one end of the four fiber ropes through the four tightening sleeves one.

[0009] More preferably, the second anchor assembly includes a tightening sleeve II, four of the tightening sleeves II are respectively rotatably connected to the four second circular holes of the movable plate, the other ends of the four fiber ropes respectively pass through the four tightening sleeves II, the four tightening sleeves II are all threadedly connected with a threaded sleeve II, and the four threaded sleeves II fix the other ends of the four fiber ropes through the four tightening sleeves II.

[0010] More preferably, the torsion mechanism includes a support plate, which is fixedly connected to the electric slider, and the bottom of the support plate on a side away from the electric slider is fixedly connected to a sliding plate, the bottom inside the outer frame is fixedly connected to a limiting slide rail, the sliding plate is slidably connected to the limiting slide rail, the top of the support plate on a side away from the electric slide rail is fixedly connected to an overrunning clutch, the inner side of the overrunning clutch is fixedly connected to a threaded ring, the inner side of the threaded ring is threadedly connected to a threaded shaft, the middle part of the side of the movable plate close to the fixed plate is fixedly connected to a limiting frame, the threaded shaft is rotatably connected to the limiting frame, the threaded shaft is fixedly connected to the limiting frame, the side of the threaded shaft close to the movable plate is fixedly connected to a random gear ring, the four tightening sleeves are fixedly connected to gears on the side close to the random gear rings, and the random gear rings are respectively meshed with the four gears.

[0011] More preferably, a plurality of slots of varying lengths are formed on the outer side of the random gear ring.

[0012] More preferably, it also includes an instant pulling mechanism, which is arranged on the threaded shaft, and is used to intermittently and instantaneously enhance the pulling force on the fiber rope, and the instant pulling mechanism includes an extrusion plate, which is fixedly connected to a side of the threaded shaft away from the limit frame, and a striking plate is fixedly connected to the middle of a side of the extrusion plate away from the threaded shaft, and a limiting block is fixedly connected to a side of the support plate close to the fixed plate, and a sliding rod 2 is slidably connected to the limiting block, and the sliding rod 2 is horizontally arranged, and the sliding rod 2 passes through the support plate, and a force storage spring is connected between one end of the sliding rod 2 close to the moving plate and the limiting block, and an end of the sliding rod 2 away from the moving plate is fixedly connected to a contact rod, and the contact rod is perpendicular to the sliding rod 2, and a fixed rod is fixedly connected to a side of the contact rod away from the sliding rod 2, and a rubber head is fixedly connected to a side of the top of the fixed rod close to the striking plate, and the rubber head contacts the striking plate.

[0013] More preferably, a plurality of protrusions are evenly and laterally provided on the side of the extrusion plate away from the movable plate, the plurality of protrusions of the extrusion plate are each composed of an extrusion slope and a release straight surface, and the extrusion slope on one of the protrusions of the extrusion plate contacts one side of the top of the contact rod.

[0014] More preferably, it also includes an adjustment mechanism, which is arranged on the fixed rod, and the adjustment mechanism is used to intermittently change the force direction of the four fiber ropes, and the adjustment mechanism includes a prismatic block, which is fixedly connected to the top of the fixed rod on the side away from the rubber head, and the four side surfaces of the prismatic block are fixedly connected to a slide box, and the four slide boxes are each provided with an oblique groove, and a limiting ring is fixedly connected between the upper and lower sides of the inner part of the outer frame, and four sliding rods three are evenly slidably connected to the limiting ring, and the ends of the four sliding rods three away from each other are fixedly connected to the adjustment frame, the four fiber ropes respectively pass through the four adjustment frames and contact, and the ends of the four sliding rods three close to each other are fixedly connected to the sliding frame, and the pulleys of the four sliding frames are respectively slidably connected to the oblique grooves of the four slide boxes.

[0015] Compared with the prior art, the present invention has the following advantages: 1. The present invention drives the electric slider through the electric slide rail to make the limit sleeve and the threaded ring move together. The limit sleeve moves to squeeze the compression spring so that the tightening sleeve 2 applies tension to the fiber rope, thereby testing the tensile strength of the fiber rope. The movement of the threaded ring drives the random gear ring to rotate through the threaded shaft. The rotation of the random gear ring causes the four fiber ropes to be twisted through four gears respectively. At the same time, several empty grooves of different lengths on the random gear ring will cause the four fiber ropes to reset randomly at different times, thereby intermittently twisting the four fiber ropes at different angles during the test, thereby making the test of the fiber rope more diverse, thereby better testing the tensile strength of the fiber rope.

[0016] 2. While testing the fiber rope, the rotation of the threaded shaft drives the extrusion disk to rotate. The rotation of the extrusion disk causes the rubber head to continuously and instantly hit the impact plate through the contact rod. The rubber head repeatedly hits the impact plate to transfer the inertial force to the moving plate, thereby causing the tightening sleeve 2 to continuously generate instantaneous tension on the fiber rope, thereby making the test of the fiber rope more effective, thereby enhancing the effect of the fiber rope tensile test.

[0017] 3. The movement of the fixed rod drives the slide box to move so that the sliding frame moves. The movement of the sliding frame pulls the adjustment frame through the sliding rod. The movement of the adjustment frame will pull the middle part of the fiber rope, thereby changing the force direction of the fiber rope during the test. While generating instantaneous tension on the fiber rope, the fixed rod resets and drives the slide box to reset so that the adjustment frame resets and no longer pulls and changes the force direction of the fiber rope. Therefore, it is not easy to affect the instantaneous tension data of the fiber rope test, and the force direction of the fiber rope during the tension test is changed, so that the tensile test of the fiber rope is more sufficient and comprehensive, thereby further enhancing the tensile test effect of the fiber rope. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0019] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention.

[0020] Figure 3 It is a schematic cross-sectional three-dimensional structural diagram of the stretching mechanism of the present invention.

[0021] Figure 4 It is a schematic diagram of the split three-dimensional structure of the first anchor assembly and the second anchor assembly of the present invention.

[0022] Figure 5 It is a schematic diagram of a partially disassembled three-dimensional structure of the stretching mechanism of the present invention.

[0023] Figure 6 It is a partial cross-sectional three-dimensional structural schematic diagram of the stretching mechanism and the twisting mechanism of the present invention.

[0024] Figure 7 It is a schematic diagram of a partially disassembled three-dimensional structure of the torsion mechanism of the present invention.

[0025] Figure 8 It is a partial three-dimensional structural schematic diagram of the twisting mechanism and the instantaneous pulling mechanism of the present invention.

[0026] Fig. 9 It is a three-dimensional structural schematic diagram of the instant pulling mechanism of the present invention.

[0027] Fig.10 It is a schematic diagram of the split three-dimensional structure of the instant pulling mechanism of the present invention.

[0028] Fig.11 It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention.

[0029] Fig.12 It is a three-dimensional structural schematic diagram of the adjustment mechanism of the present invention.

[0030] Fig.13 It is a partial three-dimensional structural schematic diagram of the adjustment mechanism of the present invention.

[0031] Fig.14 It is a partial cross-sectional three-dimensional structural schematic diagram of the adjustment mechanism of the present invention.

[0032] Fig.15 It is a partial cross-sectional three-dimensional structural schematic diagram of the slide box and the sliding frame of the present invention.

[0033] The markings of the components in the attached drawings are as follows: 1. outer frame, 2. fixed plate, 301. tightening sleeve 1, 302. threaded sleeve 1, 41. electric slide rail, 42. electric slider, 43. support frame, 44. limit sleeve, 45. slide rod 1, 46. compression spring, 5. moving plate, 601. tightening sleeve 2, 602. threaded sleeve 2, 7. fiber rope, 81. support plate, 82. sliding plate, 83. limit slide rail, 84. beyond Clutch, 85, threaded ring, 86, threaded shaft, 87, limit frame, 88, random gear ring, 89, gear, 91, extrusion plate, 92, impact plate, 93, limit block, 94, sliding rod two, 95, storage spring, 96, contact rod, 97, fixed rod, 98, rubber head, 101, prismatic block, 102, slide box, 103, limit ring, 104, sliding rod three, 105, adjustment frame, 106, sliding frame. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0035] Example 1: A device for testing the tensile strength of ultra-high molecular weight polyethylene fiber ropes, such as Figure 1-Figure 15 As shown, it includes an outer frame 1, and a fixing plate 2 is connected to one side of the inner wall of the outer frame 1 by bolts, and four first circular holes are evenly opened on the fixing plate 2, and a first anchor assembly is arranged in the first circular hole of the fixing plate 2, and a stretching mechanism is provided on the outer frame 1, and a movable plate 5 is provided on the stretching mechanism, and a second anchor assembly is provided on the movable plate 5, and four fiber ropes 7 are arranged between the first anchor assembly and the second anchor assembly, and a twisting mechanism is provided on the stretching mechanism, and the stretching mechanism is used to pull the four fiber ropes 7, and the twisting mechanism is used to randomly twist the four fiber ropes 7 at different angles.

[0036] The stretching assembly includes an electric slide rail 41, which is connected to the bottom of one side of the outer frame 1 away from the fixed plate 2 by bolts, an electric slider 42 is slidably connected to the electric slide rail 41, a support frame 43 is connected to the electric slider 42 by bolts, a limiting sleeve 44 is welded on the support frame 43, a sliding rod 45 is slidably connected to the limiting sleeve 44, a scale bar is provided on the sliding rod 45, the sliding rod 45 is horizontally arranged, a compression spring 46 is connected between the end of the sliding rod 45 away from the fixed plate 2 and the limiting sleeve 44, the limiting sleeve 44 is used to apply pressure to the sliding rod 45 by squeezing the compression spring 46, and the end of the sliding rod 45 close to the fixed plate 2 is connected to a movable plate 5 by bolts, four second circular holes are evenly opened on the movable plate 5, and a second anchor assembly is provided on the second circular hole of the movable plate 5.

[0037] The limiting sleeve 44 is provided with an observation hole, and the observation hole of the limiting sleeve 44 is used to observe the corresponding scale bar on the sliding rod 1 45 .

[0038] The first anchor assembly includes a tightening sleeve 301, and four of the tightening sleeves 301 are respectively connected to the four first circular holes of the fixing plate 2 by bolts, and one end of the four fiber ropes 7 passes through the four tightening sleeves 301 respectively, and the four tightening sleeves 301 are all threadedly connected with a threaded sleeve 302, and the four threaded sleeves 302 fix one end of the four fiber ropes 7 through the four tightening sleeves 301 respectively.

[0039] The second anchor assembly includes a tightening sleeve 601, and the four tightening sleeves 601 are respectively rotatably connected to the four second circular holes of the movable plate 5, and the other ends of the four fiber ropes 7 respectively pass through the four tightening sleeves 601, and the four tightening sleeves 601 are all threadedly connected with a threaded sleeve 602, and the four threaded sleeves 602 fix the other ends of the four fiber ropes 7 through the four tightening sleeves 601.

[0040] The torsion mechanism includes a support plate 81, and the support plate 81 is connected to the electric slider 42 by bolts. A sliding plate 82 is welded to the bottom of the support plate 81 away from the electric slider 42. A limiting slide rail 83 is welded to the bottom of the outer frame 1. The sliding plate 82 is slidably connected to the limiting slide rail 83. An overrunning clutch 84 is fixedly connected to the top of the support plate 81 away from the electric slide rail 41. A threaded ring 85 is fixedly connected to the inner side of the overrunning clutch 84. The inner side of the threaded ring 85 is threadedly connected to a threaded The threaded shaft 86, the middle part of one side of the movable plate 5 close to the fixed plate 2 is connected to the limiting frame 87 by bolts, the threaded shaft 86 is rotatably connected to the limiting frame 87, the side of the threaded shaft 86 close to the movable plate 5 is connected with a random gear ring 88 by a flat key, the four tightening sleeves 2 601 are connected with gears 89 on one side close to the random gear ring 88 by a flat key, the random gear ring 88 is respectively meshed with the four gears 89, and the random gear ring 88 is used to make the tightening sleeve 2 601 twist the fiber rope 7 through the gear 89.

[0041] The outer side of the random gear ring 88 is provided with a plurality of empty slots of different lengths, and the empty slots of the random gear ring 88 are used to randomly disengage the gear 89 from contact.

[0042] Initially, the threaded sleeve 1 302 and the threaded sleeve 2 602 are both in an untightened state, so that the tightening sleeve 1 301 and the tightening sleeve 2 601 are both in a loose state. First, the staff passes one end of the four fiber ropes 7 through the four tightening sleeves 1 301 and the four threaded sleeves 1 302 respectively, and tightens the four threaded sleeves 1 302 respectively, so that the four tightening sleeves 1 301 clamp and fix one end of the four fiber ropes 7 respectively. Then, the staff passes the other ends of the four fibers through the four tightening sleeves 2 601 and the four threaded sleeves 2 602 respectively, and straightens the four fiber ropes 7. At the same time, the four threaded sleeves 2 602 are tightened respectively, so that the four tightening sleeves 2 601 respectively clamp and fix the four fiber ropes 7. The other end is clamped and fixed; after the fixation is completed, the staff will energize the electric slide rail 41, and then the staff will control the electric slide rail 41 to drive the electric slider 42 to drive the support frame 43 and the limiting sleeve 44 to move in the direction away from the fixed plate 2. The movement of the limiting sleeve 44 will squeeze the compression spring 46 to apply pressure to the sliding rod 45, and the sliding rod 45 will drive the four tightening sleeves 2 601 to apply tension to the four fiber ropes 7 in the direction away from the fixed plate 2 through the moving plate 5. The staff can record the tension borne by the fiber rope 7 through the observation hole on the limiting sleeve 44 to expose the corresponding scale bar on the sliding rod 45, and then test the tensile strength of the fiber rope 7; when testing the fiber rope 7 At the same time, the movement of the electric slider 42 will drive the support plate 81, the sliding plate 82, the overrunning clutch 84 and the threaded ring 85 to move together in the direction close to the moving plate 5. The movement of the sliding plate 82 will slide on the limiting slide rail 83. The movement of the threaded ring 85 will drive the random gear ring 88 to rotate through the threaded shaft 86. The rotation of the random gear ring 88 will first drive the four tightening sleeves 2 601 and the four threaded sleeves 2 602 to rotate together through the four gears 89 respectively. The rotation of the tightening sleeve 2 601 and the threaded sleeve 2 602 will twist the fiber rope 7, and then the random gear ring 88 will continue to rotate. Several empty grooves of different lengths on the random gear ring 88 will cause the four gears 89 to randomly disengage from the random gear ring 88. Under the effect of the fiber rope 7 being stretched straight, the disengaged gear 89 drives the tightening sleeve 2 601 and the threaded sleeve 2 602 on the same fiber rope 7 to reset together, and repeats this process. When the random gear ring 88 rotates, the four fiber ropes 7 are twisted through the four gears 89 respectively. At the same time, the several empty grooves of different lengths on the random gear ring 88 will randomly reset the four fiber ropes 7 at different times, and then the four fiber ropes 7 are intermittently twisted at different angles during the test. The staff can analyze the tensile strength by observing the test conditions of the four fiber ropes 7 under different twisting angles, thereby making the test of the fiber rope 7 more diverse, so as to better test the tensile strength of the fiber rope 7;After the test is completed, the staff controls the electric slide rail 41 to drive the electric slider 42 to drive the support frame 43, the limit sleeve 44, the support plate 81 and the sliding plate 82 to reset together. The limit sleeve 44 resets the compression spring 46, thereby eliminating the tension on the fiber rope 7. The reset of the support plate 81 drives the overrunning clutch 84 and the threaded ring 85 to reset together. Under the action of the overrunning clutch 84, the threaded ring 85 will rotate on the inner side of the overrunning clutch 84 through the threaded shaft 86 when it is reset, thereby making the threaded ring 85 reset without driving the threaded shaft 86 to rotate in the opposite direction. Then the staff twists the threaded sleeve 1 302 and the threaded sleeve 2 602 in the opposite direction so that the tightening sleeve 1 301 and the tightening sleeve 2 601 loosen the fixation on the two ends of the fiber rope 7. Then the staff removes the fiber rope 7 and cuts off the power to the electric slide rail 41. ;

[0043] Embodiment 2: Based on embodiment 1, Figure 2-Figure 11 As shown, it also includes an instant pulling mechanism, which is arranged on the threaded shaft 86. The instant pulling mechanism is used to intermittently and instantly enhance the pulling force on the fiber rope 7. The instant pulling mechanism includes an extrusion plate 91, which is welded to the side of the threaded shaft 86 away from the limiting frame 87, and a striking plate 92 is welded to the middle of the side of the extrusion plate 91 away from the threaded shaft 86. A limiting block 93 is welded on the side of the support plate 81 close to the fixed plate 2, and a sliding rod 94 is slidably connected to the limiting block 93. The sliding rod 94 is horizontally arranged. Rod 2 94 passes through the support plate 81, and a force storage spring 95 is connected between the end of the sliding rod 94 close to the movable plate 5 and the limit block 93. A contact rod 96 is welded to the end of the sliding rod 94 away from the movable plate 5. The contact rod 96 is perpendicular to the sliding rod 94, and a fixing rod 97 is welded to the side of the contact rod 96 away from the sliding rod 94. A rubber head 98 is fixedly connected to the top of the fixing rod 97 close to the side of the impact plate 92, and the rubber head 98 is in contact with the impact plate 92, and the rubber head 98 is used to knock the impact plate 92.

[0044] The side of the extrusion plate 91 away from the movable plate 5 is uniformly and laterally provided with a plurality of protrusions, each of which is composed of an extrusion slope and a release straight surface. The extrusion slope on one of the protrusions of the extrusion plate 91 contacts one side of the top of the contact rod 96, and the extrusion slope on the protrusion of the extrusion plate 91 is used to squeeze the contact rod 96.

[0045] While testing the fiber rope 7, the rotation of the threaded shaft 86 will drive the extrusion plate 91 to rotate. The raised extrusion slope on the extrusion plate 91 will first squeeze the contact rod 96 to move away from the movable plate 5. The movement of the contact rod 96 will drive the sliding rod 2 94, the fixed rod 97 and the rubber head 98 to move together. The storage spring 95 is compressed, and the movement of the rubber head 98 will disengage from the impact plate 92. Then the extrusion plate 91 continues to move, and the raised extrusion slope on the extrusion plate 91 will disengage from the contact rod 96. The instantaneous reset of the storage spring 95 will drive the sliding rod 2 94, the contact rod 96, the fixed rod 97 and the rubber head 98 to reset instantly. Repeat this process. The rotation of the extrusion plate 91 will cause the rubber head 98 to stop moving through the contact rod 96. The rubber head 98 will reset instantly when it is disconnected, and will hit the impact plate 92 when it is reset instantly. The inertial force of the rubber head 98 will be applied to the movable plate 5 through the impact plate 92, the extrusion plate 91, the threaded shaft 86 and the limit frame 87. The movable plate 5 will use the instantaneous inertial force to make the four tightening sleeves 601 instantly apply corresponding tension to the four fiber ropes 7 respectively. In this way, the rubber head 98 repeatedly hits the impact plate 92 to transfer the inertial force to the movable plate 5, thereby making the tightening sleeve 601 continuously generate instantaneous tension on the fiber rope 7. The staff can analyze the tensile strength by observing the test conditions of the fiber rope 7 under the instantaneous pulling state, thereby making the test of the fiber rope 7 more effective, thereby enhancing the effect of the tensile test of the fiber rope 7.

[0046] Embodiment 3: Based on embodiment 2, Figure 11-Figure 15 As shown, it also includes an adjustment mechanism, which is arranged on the fixing rod 97, and is used to intermittently change the force direction of the four fiber ropes 7. The adjustment mechanism includes a prismatic block 101, which is welded to the top of the fixing rod 97 away from the rubber head 98, and the four sides of the prismatic block 101 are welded with a slide box 102, and the four slide boxes 102 are all provided with an inclined groove, and a limit ring 103 is welded between the upper and lower sides of the inner part of the outer frame 1 , four sliding rods 3 104 are evenly slidably connected to the limit ring 103, and the ends of the four sliding rods 3 104 that are away from each other are welded with adjustment frames 105, the four fiber ropes 7 pass through and contact the four adjustment frames 105 respectively, and the adjustment frames 105 are used to pull the middle part of the fiber rope 7, and the ends of the four sliding rods 3 104 that are close to each other are fixedly connected with sliding frames 106, and the pulleys of the four sliding frames 106 are respectively slidably connected to the oblique grooves of the four slide boxes 102.

[0047] When the extrusion plate 91 squeezes the contact rod 96, the fixed rod 97 moves in the direction away from the movable plate 5, which will drive the prismatic block 101 and the slide box 102 to move together. The inclined grooves of the four slide boxes 102 will squeeze the four sliding frames 106 to move in the direction of approaching each other. The movement of the four sliding frames 106 will respectively pull the four adjustment frames 105 to move in the direction of approaching each other through the four sliding rods 104. The movement of the four adjustment frames 105 will respectively pull the middle parts of the four fiber ropes 7 in the direction of approaching each other, thereby changing the force direction of the fiber rope 7 during the test. The staff can observe the fiber rope 7 under the changed force. The tensile strength is analyzed by the test conditions under the directional state; while generating instantaneous pulling force on the fiber rope 7, the resetting of the fixed rod 97 in the direction close to the movable plate 5 will drive the prismatic block 101 and the slide box 102 to reset, and the inclined grooves of the four slide boxes 102 will squeeze the four sliding frames 106 respectively to reset the four adjustment frames 105, and then the force direction of the fiber rope 7 will no longer be pulled and changed; in this way, while not easily affecting the instantaneous pulling data of the fiber rope 7 test, the force direction of the fiber rope 7 during the tension test is changed, so that the tensile test of the fiber rope 7 is more sufficient and comprehensive, thereby further enhancing the tensile test effect of the fiber rope 7.

[0048] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which all fall within the protection of the present invention.

Claims

1. An ultra-high molecular weight polyethylene fiber rope tensile strength testing device, characterized by: The invention comprises an outer frame (1), a fixing plate (2) is fixedly connected to one side of the inner wall of the outer frame (1), four first circular holes are evenly opened on the fixing plate (2), a first anchor assembly is arranged in the first circular hole of the fixing plate (2), a stretching mechanism is arranged on the outer frame (1), a movable plate (5) is arranged on the stretching mechanism, a second anchor assembly is arranged on the movable plate (5), four fiber ropes (7) are arranged between the first anchor assembly and the second anchor assembly, a twisting mechanism is arranged on the stretching mechanism, the stretching mechanism is used to pull the four fiber ropes (7), and the twisting mechanism is used to randomly twist the four fiber ropes (7) to different angles.

2. The ultra-high molecular weight polyethylene fiber rope tensile strength testing device according to claim 1, characterized in that: The stretching assembly comprises an electric slide rail (41), the electric slide rail (41) being fixedly connected to the bottom of a side of the outer frame (1) away from the fixed plate (2), the electric slide rail (41) being slidably connected to an electric slider (42), the electric slider (42) being fixedly connected to a support frame (43), the support frame (43) being fixedly connected to a limiting sleeve (44), the limiting sleeve (44) being slidably connected to a sliding rod (45), the sliding rod (45) being provided with a scale bar, the sliding rod (45) being arranged horizontally, a compression spring (46) being connected between an end of the sliding rod (45) away from the fixed plate (2) and the limiting sleeve (44), the sliding rod (45) being fixedly connected to an end of the sliding rod (45) close to the fixed plate (2), the movable plate (5) being evenly provided with four second circular holes, and the second circular holes of the movable plate (5) being provided with a second anchor assembly.

3. The ultra-high molecular weight polyethylene fiber rope tensile strength testing device according to claim 2, characterized in that: The limiting sleeve (44) is provided with an observation hole.

4. The ultra-high molecular weight polyethylene fiber rope tensile strength testing device according to claim 2, characterized in that: The first anchor assembly includes a tightening sleeve (301), four tightening sleeves (301) are respectively fixedly connected to the four first circular holes of the fixing plate (2), one end of the four fiber ropes (7) respectively passes through the four tightening sleeves (301), the four tightening sleeves (301) are each connected to a threaded sleeve (302) by threading, and the four threaded sleeves (302) respectively fix one end of the four fiber ropes (7) through the four tightening sleeves (301).

5. The ultra-high molecular weight polyethylene fiber rope tensile strength testing device according to claim 2, characterized in that: The second anchor assembly includes a tightening sleeve II (601), four tightening sleeves II (601) are respectively rotatably connected to the four second circular holes of the movable plate (5), the other ends of the four fiber ropes (7) respectively pass through the four tightening sleeves II (601), the four tightening sleeves II (601) are each threadedly connected to a threaded sleeve II (602), and the four threaded sleeves II (602) respectively fix the other ends of the four fiber ropes (7) through the four tightening sleeves II (601).

6. The ultra-high molecular weight polyethylene fiber rope tensile strength testing device according to claim 2, characterized in that: The twisting mechanism comprises a support plate (81), the support plate (81) being fixedly connected to the electric slider (42), a sliding plate (82) being fixedly connected to the bottom of the support plate (81) away from the electric slider (42), a limiting slide rail (83) being fixedly connected to the bottom of the outer frame (1), the sliding plate (82) being slidably connected to the limiting slide rail (83), an overrunning clutch (84) being fixedly connected to the top of the support plate (81) away from the electric slide rail (41), and a threaded A ring (85), the inner side of the threaded ring (85) is connected to a threaded shaft (86) through a thread, the middle part of the side of the movable plate (5) close to the fixed plate (2) is fixedly connected to a limiting frame (87), the threaded shaft (86) is rotatably connected to the limiting frame (87), the side of the threaded shaft (86) close to the movable plate (5) is fixedly connected to a random gear ring (88), the four tightening sleeves (601) are fixedly connected to a gear (89) on one side close to the random gear ring (88), and the random gear ring (88) is respectively meshed with the four gears (89).

7. The ultra-high molecular weight polyethylene fiber rope tensile strength testing device according to claim 6, characterized in that: The outer side of the random gear ring (88) is provided with a plurality of slots of varying lengths.

8. The ultra-high molecular weight polyethylene fiber rope tensile strength testing device according to claim 6, characterized in that: The invention also includes an instantaneous pulling mechanism, which is arranged on the threaded shaft (86) and is used to intermittently and instantaneously enhance the pulling force on the fiber rope (7). The instantaneous pulling mechanism includes an extrusion plate (91), which is fixedly connected to a side of the threaded shaft (86) away from the limiting frame (87), and a striking plate (92) is fixedly connected to the middle of the side of the extrusion plate (91) away from the threaded shaft (86). A limiting block (93) is fixedly connected to a side of the support plate (81) close to the fixing plate (2), and a sliding rod (94) is slidably connected to the limiting block (93), and the sliding rod (94) is horizontally arranged. The second sliding rod (94) passes through the support plate (81); a force storage spring (95) is connected between the end of the second sliding rod (94) close to the movable plate (5) and the limit block (93); the end of the second sliding rod (94) away from the movable plate (5) is fixedly connected to a contact rod (96); the contact rod (96) is perpendicular to the second sliding rod (94); the side of the contact rod (96) away from the second sliding rod (94) is fixedly connected to a fixed rod (97); the top of the fixed rod (97) is fixedly connected to a side close to the impact plate (92); the rubber head (98) is in contact with the impact plate (92).

9. The ultra-high molecular weight polyethylene fiber rope tensile strength testing device according to claim 8, characterized in that: A plurality of protrusions are evenly arranged laterally on a side of the extrusion plate (91) away from the movable plate (5), the plurality of protrusions of the extrusion plate (91) each consisting of an extrusion inclined surface and a release straight surface, and the extrusion inclined surface on one of the protrusions of the extrusion plate (91) contacts one side of the top of the contact rod (96).

10. The ultra-high molecular weight polyethylene fiber rope tensile strength testing device according to claim 8, characterized in that: The outer frame (1) further comprises an adjustment mechanism, the adjustment mechanism being arranged on the fixing rod (97), the adjustment mechanism being used for intermittently changing the force direction of the four fiber ropes (7), the adjustment mechanism comprising a prismatic block (101), the prismatic block (101) being fixedly connected to the top of the fixing rod (97) on a side away from the rubber head (98), the four side surfaces of the prismatic block (101) being fixedly connected to a slide box (102), the four slide boxes (102) being provided with an inclined groove, and the upper and lower sides of the inner part of the outer frame (1) being fixedly connected to each other. A limit ring (103) is fixedly connected, and four sliding rods (104) are evenly slidably connected to the limit ring (103); the ends of the four sliding rods (104) that are away from each other are fixedly connected to an adjustment frame (105); the four fiber ropes (7) respectively pass through and contact the four adjustment frames (105); the ends of the four sliding rods (104) that are close to each other are fixedly connected to a sliding frame (106); and the pulleys of the four sliding frames (106) are respectively slidably connected to the inclined grooves of the four slide slot boxes (102).

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