A laser measuring device for detecting tensile strength of a steel cable

Abstract

The application relates to the technical field of detection devices, in particular to a laser measuring device for detecting the tensile strength of a steel cable, which comprises a base, a support fixed to the top of the base, a linkage plate fixed to the output end of an extension rod, two square boxes arranged at the bottom of the linkage plate, a pusher arranged at the inner side of each of the two square boxes, two slide rods arranged at the bottom of each of the two square boxes, a support plate fixed to the side of each of the two slide rods away from each other, a moving plate slidably connected to the outer side of each of the two slide rods, a pop-up piece arranged at the inner side of the moving plate, a taper head arranged at one side of the pop-up piece, a clamping plate fixed to the side of each of the two clamping rods close to each other, a push plate arranged at the two sides of each of the two square boxes, and the linkage plate is slidably connected to the inner side of the support; through cooperation of various components and a laser sensor, multi-dimensional, partitioned and point-by-point detection of a sample is realized, the length deformation variable of a unit interval of the sample and the diameter deformation variable of a sampling point can be detected, and the steel cable can be comprehensively and accurately evaluated.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of detection devices, in particular to a laser measuring device for detecting the tensile strength of a steel cable. BACKGROUND

[0002] An elevator steel cable needs to bear cyclic load and dynamic stress. A tensile strength detection device (such as an electronic universal testing machine or an ultrasonic flaw detector) can detect internal cracks, wear or corrosion defects of the steel wire rope in advance by accurately measuring the breaking strength, elongation and other parameters. The national standard (such as GB8903-88) requires that the safety factor of the elevator steel cable be greater than or equal to 12. The detection device provides objective data support to ensure that the operation unit meets the requirements of laws and regulations such as the Special Device Safety Law.

[0003] The tensile strength detection device of the steel cable plays a key role in the quality detection of the steel cable. In the safety aspect, it can accurately detect the tensile strength of the steel cable, find potential strength defects and hidden dangers in advance, and avoid the rupture of the steel cable due to insufficient strength during the lifting process of the elevator, effectively protecting the safety of personnel and property. In the production link, it helps the manufacturer to strictly control the quality of the steel cable and provides data support for optimizing the production process, promoting the improvement of product quality. For the user, it can select the appropriate steel cable according to the test results, reducing the risk of using unqualified products. From the industry standard, the device helps enterprises to meet the relevant safety standards and quality specifications, and promotes the healthy development of the entire elevator industry. In the whole life cycle of the steel cable, it becomes an important line of defense to protect the quality and safety.

[0004] A Chinese patent with the publication number CN119000314A discloses a steel wire rope tensile strength detection device. When the tension on the steel wire rope gradually increases during the detection process, the pressure exerted by the conical part on the conical port also gradually increases, so that the clamping force of the steel wire rope end is proportional to the tension on the steel wire rope, thereby effectively avoiding the situation that the steel wire rope end slips and cannot be detected. The steel wire rope is easy to fix, and the use effect is better.

[0005] The existing steel cable tensile strength detection device is only used for detecting the tensile strength of the steel cable, and the deformation of the sample needs to be detected manually by using other tools, which is inconvenient for detecting the length deformation of the sample in the unit interval and the diameter deformation of the sampling point, which cannot comprehensively understand the elongation characteristics of the steel cable under stress, cannot accurately judge the elasticity and toughness of the steel cable, and the detection data is incomplete, which may cause deviation in the overall mechanical property evaluation of the steel cable, and it is difficult to find the internal subtle damage of the steel cable, which reduces the accuracy of the detection result, and it is difficult to effectively compare the steel cables produced by different batches and manufacturers, and it is difficult to judge whether the steel cable meets the use requirements, and it is difficult to provide key data for the improvement of the process of the manufacturer, which is not conducive to the improvement of the quality of the steel cable, and more seriously, in the actual elevator lifting operation, the remaining service life and safety bearing capacity of the steel cable cannot be accurately predicted, which may cause serious safety accidents due to excessive deformation or internal damage of the steel cable, and threatens the safety of personnel and property.

[0006] Therefore, a laser measuring device for detecting the tensile strength of the steel cable by using the laser sensor is needed to solve the problem that it is inconvenient to detect the length deformation of the sample in the unit interval and the diameter deformation of the sampling point. SUMMARY

[0007] In order to solve the problem that the deformation of the sample needs to be detected manually by using other tools and the elongation characteristics of the steel cable under stress cannot be comprehensively understood, the present application provides a laser measuring device for detecting the tensile strength of the steel cable.

[0008] The technical scheme of the present application is as follows: a laser measuring device for detecting the tensile strength of the steel cable, comprising a base, a support fixed on the top of the base, an extension rod fixed on the top of the support, a link plate fixed on the output end of the extension rod, two square boxes arranged on the bottom of the link plate, a pusher arranged on the inner side of each of the two square boxes, a rotating rod arranged on one side of each of the two pushers, two slide rods arranged on the bottom of the square box close to the extension rod, a support plate fixed on the side of each of the two slide rods away from each other, a moving plate slidably connected to the outer side of each of the two slide rods, a pop-up piece arranged on the inner side of the moving plate, a tapered head arranged on one side of the pop-up piece, a clamping rod arranged on the two sides of the square box close to the extension rod, a clamping plate fixed on the side of each of the two clamping rods close to each other, and a push plate arranged on the two sides of each of the two square boxes. The pusher is arranged to fix the steel cable by rotating the rotating rod and move the clamping rod and the push plate. The pop-up piece is arranged to pop up the tapered head after the rotating rod fixes the steel cable. The laser sensing assembly is arranged to detect the length deformation of the sample in the unit interval and the diameter deformation of the sampling point in multiple dimensions, zones and points.

[0009] Further, the link plate is slidably connected to the inner side of the support, one of the two square boxes is fixed on the side of the link plate close to the base, the other square box is fixed on the side of the base close to the link plate, and vertical grooves are formed on the two sides of each of the two square boxes.

[0010] Further, the pushing piece comprises a threaded rod connected to the other side of the square box through threads, a rotating rod fixed to one end of the threaded rod away from the square box, and a fixed plate rotatably connected to the other end of the threaded rod, both sides of the fixed plate are fixed with side plates, and both sides of each side plate are fixed with teeth.

[0011] Further, both sides of the two square boxes are rotatably connected with lead screws, one end of each lead screw inside the square box is fixed with a gear, the gear is engaged with the teeth, the other end of the two lead screws close to the cylinder is connected with an upper plate through threads, the push plate is rotatably connected to the bottom of the upper plate, the other end of the two lead screws close to the base is connected with a lower plate through threads, and the push plate is slidingly connected to the outside of the lower plate.

[0012] Further, both sides of the two square boxes are rotatably connected with lead screws, one end of each lead screw inside the square box is fixed with a gear, the gear is engaged with the teeth, the other end of the two lead screws close to the cylinder is connected with an upper plate through threads, the push plate is rotatably connected to the bottom of the upper plate, the other end of the two lead screws close to the base is connected with a lower plate through threads, and the push plate is slidingly connected to the outside of the lower plate.

[0013] Further, the ejecting piece comprises two back plates, one side of each back plate is fixed with a spring, the other end of each spring is fixed to the inner wall of the side of the moving plate close to the tapered head, one side of each back plate fixed with the spring is fixed with a connecting rod, the other end of the two connecting rods is fixed with a bottom plate, the tapered head is fixed to the side of the bottom plate away from the connecting rod, one side of the two back plates close to each other is fixed with a round rod, and the round rod is located inside the clamping plate.

[0014] Further, the supporting rod is provided with three ends, namely two inclined ends and a vertical segment, the round rod is located inside the vertical segment, the side of each sliding rod is provided with a side groove, and the bottom of each sliding rod is provided with a through hole.

[0015] Further, the laser sensor assembly comprises a laser sensor one and a laser sensor two, the top of each back plate is fixed with the laser sensor one, the top of each moving plate is fixed with the laser sensor two, the top of the square box close to the base is also fixed with another laser sensor two, and the telescopic rod, the laser sensor one and the laser sensor two are electrically connected with a processor.

[0016] The beneficial effects of the present application are as follows:

[0017] (1) The laser measuring device for detecting the tensile strength of a steel cable adopts a moving plate, a tapered head and a pop-up piece, cooperates with a laser sensor to realize multi-dimensional, partitioned and point-by-point detection of a sample, so that the length deformation variable of a unit interval of the sample and the diameter deformation variable of a sampling point can be detected, compared with the prior art, the partitioned and point-by-point detection can comprehensively and accurately evaluate the deformation of the steel cable, accurately position local defects, meet the needs of complex working conditions, detect the length deformation variable of a unit interval, measure the overall mechanical properties, compare the quality of different steel cables, predict the service life, detect the diameter deformation variable of a sampling point, find internal damage, evaluate stress uniformity, and verify the manufacturing process of the steel cable, which provides strong support for guaranteeing the quality of the steel cable and the safety of elevator lifting operation, and comprehensively assists the production and application in the field of steel cables.

[0018] (2) The laser measuring device for detecting the tensile strength of a steel cable adopts a moving plate, a pushing piece and a tapered head, can release and fix the moving plate and the tapered head by using the force for fixing and removing the steel cable sample, does not need an additional power source and complex control, and can be completed by the operator when fixing or removing the steel cable, so that the process is simplified and the work efficiency is improved, an independent driving device is saved, energy consumption is reduced, manufacturing and maintenance costs are reduced, and the detection accuracy is guaranteed.

[0019] (3) The laser measuring device for detecting the tensile strength of a steel cable adopts a clamping plate and a clamping rod, can avoid that the spring pulls the round rod to extrude the push plate when being idle, keeps the push plate vertical, ensures that the round rod can be accurately restored to the original position when being restored to the original position after testing, makes the detection environment consistent, the data more accurate and stable, and the error reduced. BRIEF DESCRIPTION OF DRAWINGS

[0020] The application will be further described in combination with the drawings and examples.

[0021] Figure 1 A schematic diagram of the overall structure of the laser measuring device for detecting the tensile strength of a steel cable provided by the application is shown in the figure.

[0022] Figure 2 A schematic diagram of the overall structure of the laser measuring device for detecting the tensile strength of a steel cable provided by the application is shown in the figure.

[0023] Figure 3 A schematic diagram of the overall structure of the laser measuring device for detecting the tensile strength of a steel cable provided by the application is shown in the figure.

[0024] Figure 4 A schematic diagram of the overall structure of the laser measuring device for detecting the tensile strength of a steel cable provided by the application is shown in the figure. Figure 2 A schematic diagram of the overall structure of the laser measuring device for detecting the tensile strength of a steel cable provided by the application is shown in the figure.

[0025] Figure 5 A pusher three-dimensional structure schematic view of a laser measuring device for steel cable tensile strength detection provided by the present application;

[0026] Figure 6 A slide rod three-dimensional structure schematic view of a laser measuring device for steel cable tensile strength detection provided by the present application;

[0027] Figure 7 A moving plate three-dimensional structure schematic view of a laser measuring device for steel cable tensile strength detection provided by the present application;

[0028] Figure 8 A lower plate three-dimensional structure schematic view of a laser measuring device for steel cable tensile strength detection provided by the present application;

[0029] Figure 9 A push plate three-dimensional structure schematic view of a laser measuring device for steel cable tensile strength detection provided by the present application;

[0030] Figure 10 A support three-dimensional structure schematic view of a laser measuring device for steel cable tensile strength detection provided by the present application;

[0031] Figure 11 A clamping rod three-dimensional structure schematic view of a laser measuring device for steel cable tensile strength detection provided by the present application;

[0032] Figure 12 A support plate three-dimensional structure schematic view of a laser measuring device for steel cable tensile strength detection provided by the present application.

[0033] In the figure: 1, base; 2, support; 3, telescopic rod; 4, link plate; 5, square box; 51, vertical groove; 7, pusher; 71, threaded rod; 72, fixed plate; 73, side plate; 74, tooth; 75, guide hole; 8, moving plate; 9, taper head; 91, bottom plate; 92, connecting rod; 93, back plate; 94, round rod; 10, rotating rod; 11, slide rod; 111, through hole; 112, side groove; 12, clamping rod; 121, clamping plate; 122, support; 123, guide rod; 13, push plate; 131, lower plate; 132, upper plate; 133, screw rod; 134, gear; 14, support plate. DETAILED DESCRIPTION

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be briefly introduced below in conjunction with the drawings and the description of the embodiments or the prior art. Obviously, the following description of the structure of the drawings is only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work. It should be noted that the description of these embodiments is used to help understand the present invention, but does not constitute a limitation of the present invention.

[0035] Example: Figures 1-12 As shown, a laser measuring device for detecting the tensile strength of a steel cable comprises a base 1, a bracket 2 is fixed on the top of the base 1, a telescopic rod 3 is fixed on the top of the bracket 2, a link plate 4 is fixed on the output end of the telescopic rod 3, two square boxes 5 are provided at the bottom of the link plate 4, a pushing member 7 is provided on the inner side of the two square boxes 5, a rotating rod 10 is provided on one side of the two pushing members 7, two sliding rods 11 are provided at the bottom of the square box 5 close to the telescopic rod 3, a supporting plate 14 is fixed on the side where the two sliding rods 11 are away from each other, a moving plate 8 is slidably connected to the outer side of the two sliding rods 11, a pop-up member is provided on the inner side of the moving plate 8, a cone head 9 is provided on one side of the pop-up member, a clamping rod 12 is provided on both sides of the square box 5 close to the telescopic rod 3, a clamping plate 121 is fixed on the side where the two clamping rods 12 are close to each other, and a clamping plate 121 is fixed on both sides of the two square boxes 5. A push plate 13 is provided, and the link plate 4 is slidably engaged with the inner side of the bracket 2. One of the square boxes 5 is fixed to the side of the link plate 4 close to the base 1, and the other square box 5 is fixed to the side of the base 1 close to the link plate 4. Vertical slots 51 are provided on both sides of the two square boxes 5. The pusher 7 is assembled to fix the steel cable by rotating the rotating rod 10, and to drive the clamping rod 12 and the push plate 13 to move. The pusher 7 includes a threaded rod 71, which is connected to the other side of the square box 5 by a thread. The rotating rod 10 is fixed to the end of the threaded rod 71 away from the square box 5, and the other end of the threaded rod 71 is rotatably connected to a fixed plate 72. Side plates 73 are fixed on both sides of the fixed plate 72, and teeth 74 are fixed on the side of the two side plates 73 away from the movable plate 8. A guide hole 75 is provided on one side of each side plate 73.

[0036] In this embodiment, the staff places one end of the steel cable sample to be tested inside the square box 5 close to the base 1. The staff manually rotates the rotating rod 10 forward, and the rotating rod 10 drives the threaded rod 71 to rotate forward. The threaded rod 71 drives the fixing plate 72 to move along the inner side of the square box 5 toward the side close to the steel cable sample through meshing action, thereby fixing one end of the steel cable sample inside the square box 5 close to the base 1.

[0037] The worker places the other end of the steel cable sample to be tested inside the square box 5 close to the telescopic rod 3, and rotates the rotating rod 10 in the positive direction with the hand, so that the rotating rod 10 drives the threaded rod 71 to rotate in the positive direction, the threaded rod 71 drives the fixed plate 72 to move along the inside of the square box 5 to the side close to the steel cable sample through the meshing action, and then fixes the other end of the steel cable sample inside the square box 5 close to the base 1, thereby completing the fixing of the sample.

[0038] Specifically, the two sides of the two square boxes 5 are rotatably connected with lead screws, one end of each lead screw inside the square box 5 is fixed with a gear 134, the gear 134 is meshed with the tooth 74, the other end of the two lead screws close to the air cylinder is threadedly connected with an upper plate 132, the push plate 13 is rotatably connected to the bottom of the upper plate 132, the other end of the two lead screws 133 close to the base 1 is threadedly connected with a lower plate 131, the push plate 13 is slidingly connected to the outside of the lower plate 131, the push plate 13 is inside the limiting plate, the two vertical grooves 51 close to the telescopic rod 3 are slidingly connected with guide rods 123 inside, the two guide rods 123 close to each other are inside the two guide holes 75 close to the telescopic rod 3, the two clamping rods 12 are fixed to the other end of the two guide rods 123, and the two sides of the square box 5 close to the base 1 are fixed with supports 122. The two clamping rods 12 are slidingly connected to the outside of the two supports 122.

[0039] In this embodiment, when the worker fixes one end of the steel cable sample to be tested inside the square box 5 close to the base 1, the fixed plate 72 drives the two side plates 73 to move, the two side plates 73 drive the two gears 134 to rotate in the positive direction through the tooth 74, the two gears 134 drive the two lead screws 133 to rotate in the positive direction, the two lead screws 133 drive the two upper plates 132 to move to the side close to the square box 5 through the meshing action, the two upper plates 132 rotate relative to the two push plates 13, so that the push plate 13 is inclined, when the two upper plates 132 contact the square box 5, the fixed plate 72 forms a square cross-section space inside the square box 5, at the same time, the two side plates 73 drive the two guide rods 123 to move to the side close to the telescopic rod 3 along the vertical groove 51 through the two guide holes 75, the two guide rods 123 drive the two clamping rods 12 to move close to the telescopic rod 3, when the guide rod 123 contacts the top wall of the vertical groove 51, the clamping plate 121 is completely removed from the outside of the round rod 94, and the partial restriction on the round rod 94 is released.

[0040] When the staff places the other end of the steel cable sample to be tested inside the square box 5 close to the telescopic rod 3, in the process, the fixed plate 72 drives the two side plates 73 to move, the two side plates 73 drive the two gears 134 to rotate clockwise through the gear teeth 74, the two gears 134 drive the two lead screws 133 to rotate clockwise, the two lead screws 133 drive the two lower plates 131 to move towards the side close to the square box 5 through the meshing action, the two upper plates 132 rotate relative to the two push plates 13, and when the two upper plates 132 contact the square box 5, the fixed plate 72 and the inside of the square box 5 form a square cross-section three-dimensional space, at this time the push plate 13 is vertical, and completely releases the restriction on the round rod 94.

[0041] Specifically, after the ejection part is assembled to rotate the rotating rod 10 to fix the steel cable, the conical head 9 is ejected, the ejection part includes two back plates 93, one side of each of the two back plates 93 is fixed with a spring, the other end of each spring is fixed to the inner wall of the moving plate 8 close to the conical head 9, the side of each back plate 93 fixed with the spring is fixed with a connecting rod 92, the other end of the two connecting rods 92 is fixed with a bottom plate 91, the conical head 9 is fixed to the side of the bottom plate 91 away from the connecting rod 92, and the two back plates 93 are fixed with the round rod 94 close to each other. The round rod 94 is located inside the clamping plate 121.

[0042] In the embodiment, the back plate 93 pushes the connecting rod 92 to move towards the side close to the sample under the action of the spring, the two connecting rods 92 push the bottom plate 91 to move towards the side close to the sample, and the bottom plate 91 pushes the conical head 9 to insert into the inside of the steel cable.

[0043] Specifically, the support rod 14 is provided in three ends, that is, two inclined sections and one vertical section, the round rod 94 is located inside the vertical section, one side of each of the two sliding rods 11 is provided with a side groove 112, and the bottom of each of the two sliding rods 11 is provided with a through hole 111.

[0044] In the embodiment, after the detection is completed, the staff reverses the two rotating rods 10 in sequence, so that the fixed plate 72 and the two side plates 73 return to the original position, the two side plates 73 drive the two lead screws 133 to reverse through the gear teeth 74, the lead screws 133 drive the upper plates 132 and the lower plates 131 to move away from the square box 5, so that the upper plates 132, the lower plates 131 and the push plates 13 return to the original position, the push plate 13 pushes the round rod 94 to move along the inclined section of the support plate 14 to the inside of the vertical section to return to the original position, and the side plate 73 drives the guide rod 123 to move to contact the bottom wall of the vertical groove 51. The sample after the test is completed is removed, and then the staff controls the output end of the telescopic rod 3 to return to the original position through the processor, so that the clamping plate 121 moves to be attached to the round rod 94 to restrict the round rod 94.

[0045] Specifically, the laser sensing assembly is assembled to detect the length deformation of the unit interval of the sample and the diameter deformation of the sampling point in multiple dimensions, in zones and in points; the laser sensing assembly comprises a laser sensor one and a laser sensor two, the top of each back plate 93 is fixedly penetrated by the laser sensor one, the top of each moving plate 8 is fixedly penetrated by the laser sensor two, and another laser sensor two is fixedly penetrated at the top of the square box 5 close to the base 1; the telescopic rod 3, the laser sensor one and the laser sensor two are electrically connected with the processor.

[0046] In the embodiment, the laser sensor one and the laser sensor two can emit laser pulses to the target, measure the time from emission to reflection by the target and reception, calculate the distance, the laser sensor two can measure the distance from the top of the moving plate 8 or the top wall of the bracket 2, measure the distance between the test ends before stretching and report to the processor, the laser sensor one in the same plane measures the distance between the back plate 93 and the inner wall of the moving plate 8 close to the bottom plate 91, measures the initial diameter of the steel cable and reports to the processor, and finally stores, transmits and processes in the Internet of Things, so that the length deformation of the unit interval of the sample and the diameter deformation of the sampling point can be detected.

[0047] At the same time, in order to reduce the influence of the gap between the steel cable line groups on the detection result, the laser sensor one and the laser sensor two continuously sample and detect during the detection process, and form a database for reporting to the processor for processing and recording.

[0048] Working principle: initial state reference Figures 1-12 The worker places one end of the steel cable sample to be tested inside the square box 5 close to the base 1, and the worker rotates the rotating rod 10 by hand to fix one end of the steel cable sample inside the square box 5 close to the base 1.

[0049] In this process, the fixed plate 72 drives the two side plates 73 to move, so that the push plate 13 is inclined, and the two clamping rods 12 move close to the telescopic rod 3, when the guide rod 123 contacts the top wall of the vertical groove 51, the clamping plate 121 is completely moved out from the outside of the round rod 94, and the partial restriction on the round rod 94 is released.

[0050] The worker places the other end of the steel cable sample to be tested inside the square box 5 close to the telescopic rod 3, and the worker rotates the rotating rod 10 by hand to fix the other end of the steel cable sample inside the square box 5 close to the base 1, thereby completing the fixation of the sample, and the processor controls the laser sensor two to measure the distance from the top of the moving plate 8 or the top wall of the bracket 2, measure the distance between the test ends before stretching and report to the processor.

[0051] In the process, the fixed plate 72 drives the two side plates 73 to move, and when the two upper plates 132 contact the square box 5, the push plate 13 is vertical, and the restriction on the round rod 94 is completely released;

[0052] The back plate 93 pushes the connecting rod 92 to move to the side close to the sample under the action of the spring, and the bottom plate 91 pushes the cone head 9 to insert into the inside of the steel cable. When the back plate 93 stops moving, the processor controls the laser sensor one on the same plane to measure the distance between the back plate 93 and the inner wall of the side close to the bottom plate 91 of the moving plate 8, determines the initial diameter of the steel cable and reports to the processor;

[0053] The worker controls the output end of the telescopic rod 3 to retract to stretch the sample, and in the process, the length and diameter of the sample change. The sample moves the moving plate 8 through the cone head 9, and the back plate 93 always extrudes the cone head 9 to the sample through the spring. When the stretching force applied by the telescopic rod 3 reaches the required standard, if the sample breaks, it is unqualified, if the sample does not break, the laser sensor one and the laser sensor two again measure the distance between each test end before stretching and the distance between each plane back plate 93 and the inner wall of the side close to the bottom plate 91 of the moving plate 8, and report to the processor. The processor collects the deformation length of each test end and the deformation amount of each plane diameter, and the worker comprehensively determines whether it is qualified after the processor processes.

[0054] Finally, it should be noted that: the above only describes the preferred embodiments of the present application and does not limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A laser measuring device for detecting the tensile strength of a steel cable, comprising a base (1) and a laser sensing assembly, a support (2) being fixed to the top of the base (1), characterized in that: The top of the support (2) is fixed with a telescopic rod (3), the output end of the telescopic rod (3) is fixed with a link plate (4), the bottom of the link plate (4) is provided with two square boxes (5), the inner sides of the two square boxes (5) are provided with pushers (7), one side of the two pushers (7) is provided with a rotating rod (10), the bottom of the square box (5) close to the telescopic rod (3) is provided with two slide rods (11), the sides of the two slide rods (11) away from each other are fixed with support plates (14), the outer sides of the two slide rods (11) are slidably connected with moving plates (8), the inner sides of the moving plates (8) are provided with pop-up pieces, one side of the pop-up pieces is provided with a tapered head (9), the two sides of the square box (5) close to the telescopic rod (3) are provided with clamping rods (12), the sides of the two clamping rods (12) close to each other are fixed with clamping plates (121), the two sides of the two square boxes (5) are provided with push plates (13). The pusher (7) is assembled to fix the steel cable by rotating the rotating rod (10) and drive the clamping rod (12) and the push plate (13) to move. The pop-up piece is assembled to pop up the tapered head (9) after the rotating rod (10) fixes the steel cable. The laser sensing assembly is assembled to detect the length deformation of the unit interval of the sample and the diameter deformation of the sampling point in multiple dimensions, in zones and in points.

2. The laser measuring device for detecting tensile strength of a steel cable according to claim 1, characterized in that: The link plate (4) is slidably clamped on the inner side of the support (2), one of the square boxes (5) is fixed on the side of the link plate (4) close to the base (1), the other square box (5) is fixed on the side of the base (1) close to the link plate (4), and vertical grooves (51) are formed in the two sides of the two square boxes (5).

3. The laser measuring device for detecting tensile strength of a steel cable according to claim 2, characterized in that: The pusher (7) comprises a threaded rod (71), the threaded rod (71) is threadedly connected to the other side of the square box (5), the rotating rod (10) is fixed on the end of the threaded rod (71) away from the square box (5), the other end of the threaded rod (71) is rotatably connected with a fixed plate (72), the two sides of the fixed plate (72) are fixed with side plates (73), the sides of the two side plates (73) away from the moving plate (8) are fixed with teeth (74), and a guide hole (75) is formed in one side of each side plate (73).

4. The laser measuring device for detecting tensile strength of a steel cable according to claim 3, characterized in that: Rotatable screws are through-connected in the two sides of the two square boxes (5), a gear (134) is fixed on the end of each screw on the inner side of the square box (5), the gear (134) is engaged with the teeth (74), the other ends of the two screws close to the air cylinder are threadedly connected with an upper plate (132), the push plate (13) is rotatably connected to the bottom of the upper plate (132), the other ends of the two screw rods (133) close to the base (1) are threadedly connected with a lower plate (131), the push plate (13) is slidably connected to the outer side of the lower plate (131), and the push plate (13) is located on the inner side of the limiting plate.

5. The laser measuring device for detecting tensile strength of a steel cable according to claim 4, characterized in that: Two vertical grooves (51) close to the telescopic rod (3) are slidably connected with guide rods (123) inside, the proximal end of the two guide rods (123) is located inside the two guide holes (75) close to the telescopic rod (3), the two clamping rods (12) are respectively fixed to the other end of the two guide rods (123), the two sides of the square box (5) close to the base (1) are fixed with supports (122), and the two clamping rods (12) are slidably connected to the outer sides of the two supports (122).

6. The laser measuring device for detecting tensile strength of a steel cable according to claim 5, characterized in that: The ejecting piece comprises two back plates (93), one side of each of the two back plates (93) is fixed with a spring, the other end of each spring is fixed to the inner wall of one side of the moving plate (8) close to the taper head (9), one side of each back plate (93) fixed with the spring is fixed with a connecting rod (92), the other end of the two connecting rods (92) is fixed with a bottom plate (91), the taper head (9) is fixed to one side of the bottom plate (91) away from the connecting rod (92), and the two back plates (93) are fixed with a round rod (94) on the side close to each other. The round rod (94) is located inside the clamping plate (121).

7. The laser measuring device for detecting tensile strength of a steel cable according to claim 6, characterized in that: The supporting rod (14) is provided in three ends, namely two inclined sections and a vertical section, the round rod (94) is located inside the vertical section, and the two slide rods (11) are provided with a side groove (112) on one side.

8. The laser measuring device for detecting tensile strength of a steel cable according to claim 7, characterized in that: The laser sensing assembly comprises a laser sensor one and a laser sensor two, the top of each back plate (93) is fixed with a laser sensor one, the top of each moving plate (8) is fixed with a laser sensor two, and the top of the square box (5) close to the base (1) is also fixed with another laser sensor two. The telescopic rod (3), the laser sensor one and the laser sensor two are electrically connected with a processor.

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