Cable tension detection device

Abstract

The invention belongs to the technical field of cable tension detection, and particularly relates to a cable tension detection device which comprises a workbench, two cabinet doors are rotationally connected to the interior of the front end of the workbench, a fixing frame is installed on the upper end face of the workbench, grooves are formed in the two walls of an inner cavity of the fixing frame, and tension detection driving assemblies are arranged in inner cavities of the grooves. The problems that when an existing tension detection device detects tension of a cable, the tension borne by the cable cannot be monitored in real time in the stretching process, so that the cable cannot deform after being detected to bear N tension, and cylinder explosion is prone to occurring when the tension borne by an electric push rod is overloaded due to an electrically-driven clamping and fixing mode are solved. And the efficiency of cable tension detection is influenced.

Description

Technical Field

[0001] The invention belongs to the technical field of cable tension detection, in particular to a cable tension detection device. Background Art

[0002] Wires and cables are wire products used to transmit electrical (magnetic) energy, information and realize electromagnetic energy conversion. They can be defined as: a collection of the following parts, one or more insulated cores, and their respective coatings, total protective layers and outer sheaths. Cables may also have additional uninsulated conductors. Currently, before wires and cables are put into use after production, they need to be tensile tested to determine the tensile properties of the wires and cables so that the subsequent wires and cables can be better put into use.

[0003] A patent with publication number CN115541392B discloses a fire-proof cable core tensile test device. When the device is in operation, it can supply circuits through the cable core. When the cable core is broken, the circuit connection can be stopped, thereby stopping the operation of the electromagnet and the hydraulic cylinder, preventing the clamp from continuing to drive the cable core to move, affecting the detection of the stretchable length of the cable core, and ensuring the judgment of the tensile value of the cable core. During operation, only a simple circuit connection is required to ensure that the electromagnet and the hydraulic cylinder stop running after the cable core is broken, so as to ensure the accuracy of the cable core tensile value test, and there is no need to implement it through multiple complex electronic control equipment. The cost is lower during production and the failure rate can be reduced through a simple structure.

[0004] The above scheme still has some problems in actual application. Usually, an electric push rod is used to drive the clamping claws to clamp and fix the two ends of the cable respectively, and then the electric push rod is driven to move, and the electric push rod drives the clamping claws to pull one end of the cable to move. After the cable is deformed and broken after stretching, the tensile bearing capacity of the cable is judged, thereby realizing the tensile performance test of the cable. However, this tension test cannot monitor the tension exerted on the cable in real time during the stretching process, so as to detect how many N of tension the cable can withstand without deformation. Moreover, the electrically driven clamping and fixing method is prone to cylinder explosion when the electric push rod is subjected to an overload of tension, thereby affecting the efficiency of the cable tension test.

[0005] To this end, the present invention provides a cable tension detection device. Summary of the Invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows: a cable tension detection device according to the present invention comprises a workbench, two cabinet doors are rotatably connected to the front end of the workbench, a fixing frame is installed on the upper end surface of the workbench, grooves are formed on both walls of the inner cavity of the fixing frame, and a tension detection drive component is provided in the inner cavity of the groove;

[0008] The tension detection drive assembly includes two fixed cylinders fixedly connected to the bottom of the groove inner cavity, the inner cavities of the two fixed cylinders are rotatably connected to threaded rods, the outer threads of the threaded rods are threadedly connected to a slide, the lower end of the slide is slidably connected to a fixed block, and the upper end surface of the slide is installed with a detection box for real-time monitoring of the detection results of cable pulling;

[0009] A support frame is installed at the bottom of the inner cavity of the fixing frame, and an L-shaped fixing block is fixed to the upper end of the support frame. A semicircular tooth block is fixed to the upper part of the inner cavity of the L-shaped fixing block, and teeth are evenly arranged on the outside of the semicircular tooth block to increase the friction of the cable.

[0010] Preferably, an electric push rod is provided inside the lower end of the support frame, and the output shaft end of the electric push rod passes through the support frame and is fixed with a U-shaped clamping block, and the inner wall of the U-shaped clamping block is evenly provided with tooth grooves for engaging with the semicircular tooth block to increase the clamping force of the cable.

[0011] Preferably, a telescopic column is fixedly connected to the upper end of the fixed block, and the telescopic column is slidably connected to the slide. A bidirectional threaded rod is rotatably connected to the inner cavity of the fixed block. One end of the bidirectional threaded rod passes through the fixed block and is fixed to a crank. The external threads of the bidirectional threaded rod are connected to two clamping blocks, and a rack is provided between the two clamping blocks to increase the clamping force of the cable.

[0012] Preferably, two extrusion blocks are slidably connected to the inner cavity of the detection box, and a spring is fixed between the two extrusion blocks, one end of the spring is fixed to the inner wall of the detection box, one end of the extrusion block is fixed to a traction rope, and a wire arrangement hole is opened in the lower end of the detection box, and the traction rope passes through the wire arrangement hole and is fixed to the telescopic column.

[0013] Preferably, a protective cover is installed on the upper end surface of the workbench, a console is installed on the front end surface of the protective cover, and an adjustment knob is provided on the front end surface of the protective cover located below the console for adjusting the sliding speed of the slide.

[0014] Preferably, a tension sensor is provided in the inner cavity of the detection box, and the tension sensor is used to accurately measure the deformation and tension of the spring in real time, and the tension sensor is electrically connected to the console through a wire.

[0015] Preferably, two observation windows are slidably connected to the interior of the front end of the protective cover, and the upper and lower walls of the inner cavity of the front end of the protective cover are provided with sliding grooves, and the two observation windows are slidably connected in the inner cavity of the sliding grooves. A handle is fixed on one side of the front end surface of the observation window, and a plurality of strong ferromagnets are provided between the two observation windows for adsorbing and fixing the observation windows and sealing the protective cover. The observation windows are made of transparent acrylic plates and are used to observe changes in the cable tension detection process.

[0016] Preferably, a transmission groove is opened inside the lower end of the fixed frame, and a transmission shaft is rotatably connected to the inner cavity of the transmission groove. Two second bevel gears are fixedly connected to the outer ends of the transmission shaft, and the two second bevel gears are meshed and connected with the first bevel gear. One end of the first bevel gear is fixed to the threaded rod.

[0017] Preferably, a transmission bevel gear is rotatably connected to the bottom of the transmission groove inner cavity, one end of the transmission bevel gear passes through the fixing frame and is provided with a cross slot, the transmission bevel gear is meshedly connected to the driven bevel gear, and the driven bevel gear is fixed to the outside of the transmission shaft.

[0018] Preferably, a servo motor is installed on the upper wall of the inner cavity of the workbench, and the output shaft end of the servo motor passes through the workbench and is fixed with a cross plug block, and the cross plug block is plugged into and engaged with the cross slot to drive the transmission bevel gear to rotate.

[0019] The beneficial effects of the present invention are as follows:

[0020] 1. A cable tension detection device according to the present invention, wherein the two observation windows are pulled by holding a handle to slide and move toward each other in the inner cavity of a slide groove, thereby making the two observation windows fit together, and at the same time, the two observation windows are fixed by strong ferromagnetic attraction, and both observation windows are made of transparent acrylic plates. Therefore, during the cable tension detection process, if the cable breaks due to overload tension, a protective cover can be used to cover and protect the fixing frame in conjunction with the two observation windows to prevent the broken cable from posing a safety hazard to the operator, thereby improving the safety and practicality of the cable garbage detection device, and solving the problem that the existing cable tension detection device usually uses two clamps to clamp and fix the two ends of the cable when performing cable tension detection, and then pulls the cable to straighten it to detect the tension that the cable can withstand. However, if the cable tension detection device does not have a protective mechanism, when pulling the cable for tension detection, if the cable tension is overloaded and breaks or one end of the cable is separated from the clamp, the cable will break out of the detection device, posing a safety hazard to the operator.

[0021] 2. The cable tension detection device described in the present invention clamps and fixes one end of the cable between the clamping blocks, then passes the other end of the cable through the inner cavity of the L-shaped fixing block and winds it with the semicircular tooth block, and at the same time drives the U-shaped clamping block to clamp the cable, and then drives the slide to drive the fixing block to move upward, thereby pulling the cable into a straight state, and then the fixing block drives the telescopic column to slide inside the slide, and at the same time pulls the traction rope to drive the extrusion block to squeeze the spring, and a tension sensor is provided inside the detection box, and then when the extrusion block squeezes the spring to produce elastic deformation, it will cause the resistance strain gauge attached to the surface of the elastic body to follow The cable is deformed and its resistance is changed. Then, the resistance change is converted into voltage or current through the corresponding measuring circuit and transmitted to the control console at the same time. Then, the console calculates the magnitude of the pulling force through the computer based on the change in the measured resistance value and displays it on the console. This measurement method has high measurement accuracy, fast response speed and good stability, which can improve the efficiency of cable tension detection, thereby solving the problem that the existing cable tension detection device cannot monitor in real time whether the cable is elongated after being subjected to a specified tension when performing tension detection on the cable, and then determine the standard of the cable to withstand tension.

[0022] 3. The cable tension detection device described in the present invention is a device that pulls the two observation windows to slide and move closer to each other in the inner cavity of the slide groove, and at the same time, the two observation windows are fixed by strong magnetism. If the cable breaks due to overload tension, the protective cover can be used in combination with the two observation windows to cover and protect the fixing frame to prevent the broken cable from posing a safety hazard to the operator, thereby improving the safety and practicality of the cable garbage detection device and solving the problem that the existing cable tension detection device usually uses two clamps to clamp and fix the two ends of the cable when performing tension detection on the cable, and then pulls the cable to straighten it to detect the tension that the cable can withstand. However, if the cable tension detection device does not have a protective mechanism, when pulling the cable for tension detection, the cable tension is overloaded and breaks, or one end of the cable is separated from the clamp, the cable will break out of the detection device and cause a safety hazard to the operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 It is a schematic structural diagram of the main view of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of a partial cross-section of the interior of the fixing frame of the present invention;

[0026] Figure 3 This is a schematic diagram of the internal structure of a half-section of the fixing frame of the present invention;

[0027] Figure 4 This is a schematic diagram of the internal structure of a half-section of a skateboard according to the present invention;

[0028] Figure 5 This is a schematic diagram of a half-section structure of the workbench of the present invention;

[0029] Figure 6 This is a schematic diagram of the overall assembly structure of the threaded rod of the present invention;

[0030] Figure 7 This is a schematic diagram of a half-section structure of an L-shaped fixing block of the present invention;

[0031] In the figure: 1. workbench; 2. cabinet door; 3. protective cover; 4. observation window; 5. handle; 6. strong ferromagnetic magnet; 7. control console; 8. adjusting knob; 9. slide; 10. fixing bracket; 11. groove; 12. threaded rod; 13. slide plate; 14. detection box; 15. fixing block; 16. crank; 17. clamping block; 18. fixing cylinder; 19. support frame; 20. L-shaped fixing block; 21. semicircular tooth block; 22. U-shaped clamping block; 23. electric push rod; 24. two-way threaded rod; 25. telescopic column; 26. traction rope; 27. extrusion block; 28. spring; 29. ​​cable hole; 30. first bevel gear; 31. second bevel gear; 32. transmission shaft; 33. transmission groove; 34. driven bevel gear; 35. transmission bevel gear; 36. cross slot; 37. servo motor; 38. cross plug. DETAILED DESCRIPTION

[0032] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0033] Example 1

[0034] like Figures 1 to 7 As shown, a cable tension detection device according to an embodiment of the present invention includes a workbench 1, two cabinet doors 2 are rotatably connected to the front end of the workbench 1, a fixing frame 10 is installed on the upper end surface of the workbench 1, and grooves 11 are formed on both walls of the inner cavity of the fixing frame 10. The inner cavity of the groove 11 is provided with a tension detection drive component;

[0035] The tension detection drive assembly includes two fixed cylinders 18 fixed to the bottom of the inner cavity of the groove 11. The inner cavities of the two fixed cylinders 18 are rotatably connected to the threaded rods 12. The outer threads of the threaded rods 12 are connected to the slide 13. The lower end of the slide 13 is slidably connected to the fixed block 15. The upper end surface of the slide 13 is installed with a detection box 14. The detection box 14 can adopt the tension detection box model SBT640-1000N, which is used to monitor the detection results of the cable pulling force in real time.

[0036] A support frame 19 is installed at the bottom of the inner cavity of the fixing frame 10, and an L-shaped fixing block 20 is fixed to the upper end of the support frame 19. A semicircular tooth block 21 is fixed to the upper part of the inner cavity of the L-shaped fixing block 20, and teeth are evenly arranged on the outside of the semicircular tooth block 21 to increase the friction of the cable.

[0037] Specifically, in the prior art, an electric push rod is usually used to drive the clamping claws to clamp and fix the two ends of the cable respectively, and then the electric push rod is driven to move, and the electric push rod drives the clamping claw to pull one end of the cable to move, thereby making the cable in a straight state. After the cable is in the straight state, the control console controls the driving mechanism to continuously pull the cable to apply tension. If the cable breaks after the specified tension, the cable tension test is completed. However, this tension test uses a clamping and fixing method for the cable. If the electric push rod is overloaded with tension, it is easy to cause the cylinder to explode. Moreover, when the cable is overloaded, the cable is also easy to fall off from the clamping claw, thereby affecting the accuracy of the cable tension test.

[0038] The present invention installs the cable that needs to be tensile tested at the lower end of the fixed block 15 and the other end in the inner cavity of the L-shaped fixed block 20, so that it is wound and fixed with the semicircular tooth block 21, and then drives the threaded rod 12 to rotate, and makes the threaded transmission slide 13 of the threaded rod 12 move upward, and at the same time the slide 13 drives the fixed block 15 to move synchronously, so that the fixed block 15 pulls the cable and the L-shaped fixed block 20 to form a pulling force, and when the slide 13 is controlled to move upward by the threaded rod 12, the cable will pull the fixed block 15 to slide inside the slide 13, and the length of the fixed block 15 sliding inside the slide 13 is ten centimeters, and this ten centimeters can withstand a maximum tensile force of 1000N, so that When the fixed block 15 pulls the cable upward, the cable is in a straight state, and then the cable will pull the fixed block 15 to slide to the bottom of the inner cavity of the slide 13, and then stop driving the threaded rod 12 to drive the slide 13 to move upward. At the same time, the detection box 14 is used to monitor the position of the fixed block 15 in the inner cavity of the slide 13 in real time. If the cable is stretched after being subjected to a tensile force of 1000N within a certain period of time, the fixed block 15 will slide into the inner cavity of the slide 13 and move upward. Then the detection box 14 will slide the fixed block 15 in the inner cavity of the slide 13 to obtain the elongation of the cable, and at the same time, the standard tension that the cable can withstand is calculated based on the elongation of the cable, thereby solving the above problem.

[0039] like Figure 1 、 Figure 2 and Figure 7 As shown, an electric push rod 23 is provided inside the lower end of the support frame 19. The output shaft end of the electric push rod 23 passes through the support frame 19 and is fixedly connected to a U-shaped clamping block 22. The inner wall of the U-shaped clamping block 22 is evenly provided with tooth grooves for engaging with the semicircular tooth block 21 to increase the clamping force of the cable.

[0040] Specifically, after one end of the cable is clamped and fixed by the fixing block 15, the other end of the cable is passed through the inner cavity of the L-shaped fixing block 20 and wrapped twice with the semicircular tooth block 21. Then, the electric push rod 23 is started to drive the U-shaped clamping block 22 to move upward. The inner wall of the U-shaped clamping block 22 is evenly provided with tooth grooves, and the tooth grooves are also engaged with the semicircular tooth block 21. After driving the U-shaped clamping block 22 to slide to the outside of the semicircular tooth block 21, the cable will be clamped, thereby improving the installation and disassembly efficiency during cable tension testing.

[0041] like Figure 1 、 Figure 2 and Figure 4 As shown, a telescopic column 25 is fixedly connected to the upper end of the fixed block 15, and the telescopic column 25 is slidably connected to the slide plate 13. A bidirectional threaded rod 24 is rotatably connected to the inner cavity of the fixed block 15. One end of the bidirectional threaded rod 24 passes through the fixed block 15 and is fixed to the crank 16. The external thread of the bidirectional threaded rod 24 is connected to two clamping blocks 17, and a rack is provided between the two clamping blocks 17 to increase the clamping strength of the cable.

[0042] Specifically, before performing a tension test on the cable, one end of the cable is placed between the clamping blocks 17, and the crank 16 is driven to rotate at the same time, and the bidirectional threaded rod 24 is driven to rotate, and then the two clamping blocks 17 are threaded to move closer to each other, and a rack is provided between the two clamping blocks 17, so that the clamping block 17 can clamp and fix one end of the cable using the rack, and the rack is arranged horizontally, which can increase the friction force of the clamping block 17 when clamping the cable, and prevent the cable from falling off from between the clamping blocks 17 during the tension test, causing the cable to be stretched straight by the tension and suddenly fall off from between the clamping blocks 17, causing a safety hazard.

[0043] like Figure 1 、 Figure 3 and Figure 4 As shown, two extrusion blocks 27 are slidably connected to the inner cavity of the detection box 14, and a spring 28 is fixed between the two extrusion blocks 27. One end of the spring 28 is fixed to the inner wall of the detection box 14, and one end of the extrusion block 27 is fixed to a traction rope 26. A wire arrangement hole 29 is opened in the lower end of the detection box 14, and the traction rope 26 passes through the wire arrangement hole 29 and is fixed to the telescopic column 25.

[0044] like Figure 1 As shown, a protective cover 3 is installed on the upper end surface of the workbench 1, a console 7 is installed on the front end surface of the protective cover 3, and an adjustment knob 8 is provided on the front end surface of the protective cover 3 located below the console 7 for adjusting the sliding speed of the slide 13.

[0045] like Figure 1 、 Figure 3 and Figure 4As shown, a tension sensor is provided in the inner cavity of the detection box 14 , and the tension sensor is used to accurately measure the deformation and tension of the spring 28 in real time. The tension sensor is electrically connected to the console 7 through a wire.

[0046] Specifically, before the cable tension test is performed, one end of the cable is placed between the clamping blocks 17, and the crank 16 is driven to rotate, and the bidirectional threaded rod 24 is driven to rotate, and then the two clamping blocks 17 are threaded to move closer to each other, and a rack is provided between the two clamping blocks 17, so that the clamping blocks 17 can use the rack to clamp and fix one end of the cable, and then the other end of the cable is passed through the inner cavity of the L-shaped fixing block 20 and is wound with the semicircular tooth block 21, and at the same time the electric push rod 23 is started to drive the U-shaped clamping block 22 to move upward, and the U-shaped clamping block 22 The inner wall is evenly provided with tooth grooves, and the tooth grooves are also engaged with the semicircular tooth block 21. Then, after driving the U-shaped clamping block 22 to slide to the outside of the semicircular tooth block 21, the cable will be clamped, and then the threaded rod 12 is driven to rotate, and the threaded transmission slide plate 13 of the threaded rod 12 is moved upward. At the same time, the slide plate 13 drives the fixed block 15 to move synchronously, so that the fixed block 15 cooperates with the semicircular tooth block 21 to pull the cable into a straight state. Then, the slide plate 13 is continuously driven to drive the fixed block 15 to move upward, and the fixed block 15 drives the telescopic column 25 to slide inside the slide plate 13. At the same time, the telescopic column 25 pulls the traction rope 26 downward, and the traction rope 26 pulls the extrusion block 27 to slide and move closer to each other in the inner cavity of the detection box 14, thereby causing the extrusion block 27 to squeeze the spring 28. The spring 28 can withstand a tensile force of 1000N, and a tension sensor is provided inside the detection box 14. When the extrusion block 27 squeezes the spring 28 to produce elastic deformation, the resistance strain gauge attached to the surface of the elastic body will also be deformed, thereby changing its resistance value. Then, through the corresponding measurement circuit, this resistance change is converted into voltage or current and transmitted to the console 7 at the same time. Then, the console 7 calculates the magnitude of the tension through the computer based on the change in the measured resistance value and displays it on the console 7. This measurement method has high measurement accuracy, fast response speed, and good stability, thereby improving the efficiency of cable tension detection, thereby solving the problem that the existing cable tension detection device cannot monitor in real time whether the cable elongates after being subjected to a specified tension when performing tension detection on the cable, and then determine the standard of the cable's tension.

[0047] Example 2

[0048] like Figure 1As shown, two observation windows 4 are slidably connected to the interior of the front end of the protective cover 3. The upper and lower walls of the inner cavity of the front end of the protective cover 3 are provided with sliding grooves 9, and the two observation windows 4 are slidably connected in the inner cavity of the sliding grooves 9. A handle 5 is fixed on one side of the front end surface of the observation window 4. A plurality of strong ferromagnets 6 are provided between the two observation windows 4 for adsorbing and fixing the observation windows 4 and sealing the protective cover 3. The observation window 4 is made of a transparent acrylic plate and is used to observe changes in the cable tension detection process.

[0049] Specifically, during the cable tension test, the two observation windows 4 are pulled by holding the handle 5 to slide and move closer to each other in the inner cavity of the slide groove 9, so that the two observation windows 4 are fitted together. At the same time, the two observation windows 4 are adsorbed and fixed by strong ferromagnetic magnets 6, and the two observation windows 4 are made of transparent acrylic plates. Therefore, during the cable tension test, if the cable breaks due to overload tension, the protective cover 3 can be used to cooperate with the two observation windows 4 to cover the fixing frame 10 for protection, so as to prevent the broken cable from causing safety hazards to the operator, thereby improving the safety and practicality of the cable garbage detection device, and solving the problem that the existing cable tension detection device usually uses two clamps to clamp and fix the two ends of the cable when performing cable tension test, and then pulls the cable to straighten and detect the tension that the cable can withstand. However, if the cable tension detection device does not have a protective mechanism, when pulling the cable for tension test, the cable tension is overloaded and breaks, or one end of the cable is separated from the clamp, the cable will break out of the detection device and cause safety hazards to the operator.

[0050] like Figure 3 、 Figure 5 and Figure 6 As shown, a transmission groove 33 is opened inside the lower end of the fixed frame 10, and a transmission shaft 32 is rotatably connected to the inner cavity of the transmission groove 33. Two second bevel gears 31 are fixedly connected to the outer ends of the transmission shaft 32, and the two second bevel gears 31 are meshed and connected with the first bevel gear 30. One end of the first bevel gear 30 is fixed to the threaded rod 12.

[0051] like Figure 3 、 Figure 5 and Figure 6 As shown, a transmission bevel gear 35 is rotatably connected to the bottom of the inner cavity of the transmission groove 33. One end of the transmission bevel gear 35 passes through the fixed frame 10 and is provided with a cross slot 36. The transmission bevel gear 35 is meshedly connected to the driven bevel gear 34, and the driven bevel gear 34 is fixed to the outside of the transmission shaft 32.

[0052] Specifically, after the two ends of the cable to be tested are clamped and fixed, the transmission bevel gear 35 is driven to rotate, and the transmission bevel gear 35 is engaged with the driven bevel gear 34 to rotate. At the same time, the driven bevel gear 34 drives the transmission shaft 32 to rotate, and then drives the two second bevel gears 31 to rotate. During the rotation process, the two second bevel gears 31 will engage with the first bevel gear 30 to rotate, thereby driving the threaded rod 12 to rotate, and then the threaded rod 12 is threaded to drive the slide plate 13 to move upward. At the same time, the slide plate 13 drives the fixed block 15 to move synchronously, thereby driving the cable to move upward for straightening, so as to perform tension detection on it. Moreover, the threaded rod 12 drives the slide plate 13 to move upward, and at the same time pulls the cable for tension detection, which can improve the stability and accuracy of cable tension detection.

[0053] like Figure 1 、 Figure 5 and Figure 6 As shown, a servo motor 37 is installed on the upper wall of the inner cavity of the workbench 1. The output shaft end of the servo motor 37 passes through the workbench 1 and is fixed with a cross plug block 38. The cross plug block 38 is plugged into and engaged with the cross slot 36 to drive the transmission bevel gear 35 to rotate.

[0054] Specifically, after the two ends of the cable to be tested are clamped and fixed, the servo motor 37 is started to drive the cross plug 38 to rotate. At the same time, the cross plug 38 cooperates with the cross slot 36 to drive the transmission bevel gear 35 to rotate, and then drives the slide 13 to drive the cable to perform tension detection.

[0055] The working principle is that the cable that needs to be tensile tested is installed at the lower end of the fixed block 15, and the other end is installed in the inner cavity of the L-shaped fixed block 20, so that it is entangled and fixed with the semicircular tooth block 21, and then the threaded rod 12 is driven to rotate, and the threaded transmission slide 13 of the threaded rod 12 is moved upward. At the same time, the slide 13 drives the fixed block 15 to move synchronously, so that the fixed block 15 pulls the cable and the L-shaped fixed block 20 to form a pulling force, and when the slide 13 is controlled to move upward by the threaded rod 12, the cable will pull the fixed block 15 to slide inside the slide 13, and the length of the fixed block 15 sliding inside the slide 13 is ten centimeters, and this ten centimeters can withstand a maximum of 1000N. Tension, and then when the fixed block 15 pulls the cable to move upward, the cable is in a straight state, and then the cable will pull the fixed block 15 to slide to the bottom of the inner cavity of the slide 13, and then stop driving the threaded rod 12 to drive the slide 13 to move upward, and at the same time use the detection box 14 to monitor the position of the fixed block 15 in the inner cavity of the slide 13 in real time. If the cable is subjected to a tension of 1000N within a certain period of time and elongates, the fixed block 15 will slide into the inner cavity of the slide 13 and move upward, and then the detection box 14 will calculate the elongation of the cable by the distance that the fixed block 15 slides in the inner cavity of the slide 13, and at the same time, the standard tension that the cable can withstand is calculated based on the elongation of the cable;

[0056] The two clamping blocks 17 are then threaded together and the two ends of the cable are clamped together. The fixed block 15 is driven to move upward, and the fixed block 15 will drive the telescopic column 25 to slide inside the slide plate 13. At the same time, the telescopic column 25 pulls the traction rope 26 to move downward, and the traction rope 26 pulls the extrusion block 27 to slide close to each other in the inner cavity of the detection box 14, and then the extrusion block 27 squeezes the spring 28, and the spring 28 can withstand a tensile force of 1000N. A tension sensor is provided inside the detection box 14. When the extrusion block 27 squeezes the spring 28 to produce elastic deformation, the resistance strain gauge attached to the surface of the elastic body will also be deformed, thereby changing its resistance value. Then, through the corresponding measuring circuit, this resistance change is converted into voltage or current and transmitted to the console 7 at the same time. Then, the console 7 calculates the magnitude of the tension through the computer based on the change in the measured resistance value and displays it on the console 7. This measurement method has high measurement accuracy, fast response speed and good stability, thereby improving the efficiency of cable tension detection.

[0057] During the tension test of the cable, the two observation windows 4 are pulled by holding the handle 5 to slide and move closer to each other in the inner cavity of the slide groove 9, so that the two observation windows 4 are fitted with each other. At the same time, the two observation windows 4 are adsorbed and fixed by the strong ferromagnet 6, and the two observation windows 4 are made of transparent acrylic plates. Therefore, during the tension test of the cable, if the cable breaks due to overload tension, the protective cover 3 can be used to cooperate with the two observation windows 4 to cover and protect the fixing frame 10, so as to prevent the broken cable from posing a safety hazard to the operator, thereby improving the safety and practicality of the cable garbage detection device.

[0058] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A cable tension detection device, characterized in that: The invention comprises a workbench (1), wherein two cabinet doors (2) are rotatably connected to the front end of the workbench (1), a fixing frame (10) is installed on the upper end surface of the workbench (1), grooves (11) are provided on both walls of the inner cavity of the fixing frame (10), and a tension detection drive component is provided in the inner cavity of the groove (11); The tension detection drive assembly includes two fixed cylinders (18) fixedly connected to the bottom of the inner cavity of the groove (11), the inner cavities of the two fixed cylinders (18) are rotatably connected to the threaded rods (12), the outer threads of the threaded rods (12) are connected to the slide plate (13), the lower end of the slide plate (13) is slidably connected to the fixed block (15), the upper end surface of the slide plate (13) is installed with a detection box (14), and the detection box (14) is used to monitor the pulling force of the cable; A support frame (19) is installed at the bottom of the inner cavity of the fixing frame (10), an L-shaped fixing block (20) is fixedly connected to the upper end of the support frame (19), a semicircular tooth block (21) is fixedly connected to the upper part of the inner cavity of the L-shaped fixing block (20), and teeth are evenly arranged on the outside of the semicircular tooth block (21) to increase the friction force of the cable.

2. A cable tension detection device according to claim 1, characterized in that: An electric push rod (23) is provided inside the lower end of the support frame (19), and the output shaft end of the electric push rod (23) passes through the support frame (19) and is fixedly connected to a U-shaped clamping block (22), and the inner wall of the U-shaped clamping block (22) is evenly provided with tooth grooves for engaging with the semicircular tooth block (21) to increase the clamping force of the cable.

3. A cable tension detection device according to claim 1, characterized in that: The upper end of the fixed block (15) is fixedly connected to a telescopic column (25), and the telescopic column (25) is slidably connected to the slide plate (13). The inner cavity of the fixed block (15) is rotatably connected to a bidirectional threaded rod (24), one end of the bidirectional threaded rod (24) passes through the fixed block (15) and is fixedly connected to a crank (16). The outer surface of the bidirectional threaded rod (24) is threadedly connected to two clamping blocks (17), and a rack is provided between the two clamping blocks (17) to increase the clamping force of the cable.

4. A cable tension detection device according to claim 1, characterized in that: The inner cavity of the detection box (14) is slidably connected to two extrusion blocks (27), and a spring (28) is fixed between the two extrusion blocks (27). One end of the spring (28) is fixed to the inner wall of the detection box (14). One end of the extrusion block (27) is fixed to a traction rope (26). A wire arrangement hole (29) is opened in the lower end of the detection box (14), and the traction rope (26) passes through the wire arrangement hole (29) and is fixed to the telescopic column (25).

5. The cable tension detection device according to claim 1, characterized in that: The upper end surface of the workbench (1) is provided with a protective cover (3), the front end surface of the protective cover (3) is provided with a control console (7), and the front end surface of the protective cover (3) is located below the control console (7) and is provided with an adjustment knob (8) for adjusting the sliding speed of the slide plate (13).

6. A cable tension detection device according to claim 4, characterized in that: The inner cavity of the detection box (14) is provided with a tension sensor, and the tension sensor is used to accurately measure the deformation and tension of the spring (28) in real time. The tension sensor is electrically connected to the console (7) through a wire.

7. The cable tension detection device according to claim 5, characterized in that: Two observation windows (4) are slidably connected to the interior of the front end of the protective cover (3); the upper and lower walls of the front end inner cavity of the protective cover (3) are provided with a slide groove (9), and the two observation windows (4) are slidably connected in the inner cavity of the slide groove (9); a handle (5) is fixed to one side of the front end surface of the observation window (4); a plurality of strong ferromagnets (6) are provided between the two observation windows (4) for adsorbing and fixing the observation windows (4) and sealing the protective cover (3); the observation window (4) is made of a transparent acrylic plate and is used to observe changes during the cable tension detection process.

8. The cable tension detection device according to claim 1, characterized in that: A transmission groove (33) is provided inside the lower end of the fixing frame (10), and a transmission shaft (32) is rotatably connected to the inner cavity of the transmission groove (33). Two second bevel gears (31) are fixedly connected to the outer ends of the transmission shaft (32), and the two second bevel gears (31) are meshedly connected to the first bevel gear (30), and one end of the first bevel gear (30) is fixedly connected to the threaded rod (12).

9. A cable tension detection device according to claim 8, characterized in that: A transmission bevel gear (35) is rotatably connected to the bottom of the inner cavity of the transmission groove (33); one end of the transmission bevel gear (35) penetrates the fixed frame (10) and is provided with a cross slot (36); the transmission bevel gear (35) is meshedly connected to a driven bevel gear (34), and the driven bevel gear (34) is fixedly connected to the outside of the transmission shaft (32).

10. The cable tension detection device according to claim 1, characterized in that: A servo motor (37) is installed on the upper wall of the inner cavity of the workbench (1). The output shaft end of the servo motor (37) passes through the workbench (1) and is fixedly connected to a cross plug block (38). The cross plug block (38) is plugged and engaged with the cross slot (36) to drive the transmission bevel gear (35) to rotate.

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