Electric wire and cable tensile strength automatic detection machine

Abstract

A wire and cable tensile strength automatic detection machine disclosed by the present invention comprises a supporting seat used for supporting and fixing, the upper wall of the supporting seat is provided with a lifting assembly, a supporting assembly and a first testing assembly, the first testing assembly is arranged at the center position of the upper wall of the supporting seat, the supporting assembly is arranged between the lifting assembly and the first testing assembly, and the first testing assembly is arranged on the supporting seat. The lifting assembly movably penetrates through the supporting assembly, a rotating part is movably installed on the first testing assembly, a second testing assembly is installed on the upper wall of the rotating part, the rotating part is movably connected with the supporting assembly, and the second testing assembly is movably connected with the lifting assembly. The invention belongs to the technical field of wire and cable testing, and can complete a test of applying gradually increasing tension to a wire and cable, a test of applying impact tension to the wire and cable, and a test of applying rotary tension to the wire and cable.

Description

Technical Field

[0001] The invention belongs to the technical field of wire and cable testing, and in particular relates to an automatic testing machine for the tensile strength of wires and cables. Background Art

[0002] Wires and cables are wire products used to transmit electrical energy, information and realize electromagnetic energy conversion. During the laying and use of wires and cables, they need to withstand certain mechanical stretching and rotational forces, so their tensile strength is an important physical indicator. Testing the tensile strength of cables can evaluate whether the cables can work stably for a long time under stress conditions and determine whether their performance meets the expected requirements.

[0003] In the prior art, since the common tensile strength test of wires and cables is completed by a tensile strength tester, it is necessary to first fix the two ends of the sample on two clamps, and then start the tester to pull the sample to detect the tensile force value borne by the sample. However, the existing tester can only realize the test when the force is gradually applied to the wires and cables, and cannot perform impact force test on the wires and cables, nor can it test the rotational force on the wires and cables. Summary of the invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides an automatic tensile strength testing machine for wires and cables, which at least partially solves the problems raised in the above background technology.

[0005] The technical solution adopted by the present invention is as follows: an automatic tensile strength testing machine for wires and cables, comprising a support base for support and fixation, a lifting assembly, a support assembly and a test assembly one are installed on the upper wall of the support base, the test assembly one is arranged at the center position of the upper wall of the support base, the support assembly is arranged between the lifting assembly and the test assembly one, the lifting assembly movably penetrates the support assembly arrangement, a rotating part is movably installed on the test assembly one, a test assembly two is installed on the upper wall of the rotating part, the rotating part is movably connected to the support assembly, and the test assembly two is movably connected to the lifting assembly.

[0006] Furthermore, the test component 1 includes a connecting plate, a limit rod and a spring 2. The lower end of the limit rod is arranged at the center position of the upper wall of the support seat, the support seat supports and fixes the limit rod, the rotating part is movably sleeved on the upper end of the limit rod, the connecting plate is movably clamped at the center position of the bottom wall of the rotating part, and balls are provided at the positions where the connecting plate and the rotating part contact, which can reduce the friction between the connecting plate and the rotating part. The connecting plate is an annular structure, the lower end of the spring 2 is arranged on the upper wall of the support seat, the upper end of the spring 2 is connected to the connecting plate, the lower end of the limit rod movably passes through the connecting plate, and the spring 2 is sleeved on the outside of the limit rod.

[0007] Among them, the rotating part is a cylindrical structure, and a placement groove 1 and a placement groove 2 are provided in the center of the rotating part. The placement groove 1 is arranged at the upper end of the placement groove 2, and the upper end of the limit rod is movably arranged in the placement groove 2. When the rotating part moves upward, the limit rod can move along the placement groove 2. The outer wall of the rotating part is provided with a straight groove and a spiral groove. The upper end of the straight groove passes through the upper wall of the rotating part, and the lower end of the straight groove is connected with the upper end of the spiral groove.

[0008] Preferably, the second test component includes a connecting rod, the lower end of the connecting rod is movably clamped in the placement groove one, and the positions where the connecting rod contacts the rotating part are provided with ball bearings, which can reduce the friction between the connecting rod and the rotating part. A baffle is movably sleeved on the connecting rod, and a spring three and a telescopic rod are installed between the baffle and the upper wall of the rotating part. The spring three is sleeved on the outer side of the connecting rod, and the spring three supports the baffle. A connecting block two is installed on the upper wall of the baffle. The side wall of the upper end of the connecting block two is an arc structure, and is provided with a plurality of groups of ball bearings for reducing friction. The connecting rod is movably arranged through the center of the connecting block two, and a connecting block one is installed on the upper end of the connecting rod, and the connecting block one is arranged at the upper end of the connecting block two. The connecting block one and the connecting block two are truncated cone structures.

[0009] As a preferred embodiment of the present invention, a placement groove three is provided in the connecting block two, and two groups of placement grooves are provided. The two groups of placement grooves three are symmetrically placed with the vertical center line of the connecting rod as the symmetry axis. A limiting groove is also provided in the connecting block two, and two groups of limiting grooves are provided. The two groups of limiting grooves are symmetrically placed with the vertical center line of the connecting rod as the symmetry axis. The placement groove three is through-connected with the limiting groove, a hydraulic rod two is installed in the placement groove three, and a push plate is movably clamped in the limit groove, the push plate is connected to the movable end of the hydraulic rod two, and the outer wall of the push plate is an arc structure, which matches the arc of the outer wall of the connecting block two.

[0010] As a preferred embodiment of the present invention, a bottom wall of the connecting block is provided with fixing holes, and the fixing holes are provided with two groups, and the two groups of fixing holes are symmetrically placed with the vertical center line of the connecting rod as the symmetry axis.

[0011] Among them, the lifting component is provided with two groups, namely lifting component 1 and lifting component 2, the lifting component 1 and lifting component 2 are symmetrically placed with the vertical center line of the connecting rod as the symmetry axis, the lifting component 1 and lifting component 2 have the same structure, and only one group is introduced here, the lifting component 1 includes a hydraulic rod 1, the fixed end of the hydraulic rod 1 is arranged on the upper wall of the support seat, the movable end of the hydraulic rod 1 is installed with a lifting seat, a lifting rod is movably installed in the lifting seat, the lifting rod runs through the lifting seat, and a lifting block is installed at one end of the lifting rod close to the connecting block 1, the bottom wall of the lifting block is an inclined structure, and the side wall is an arc structure, a fixing rod is installed on the upper wall of the lifting block, the fixing rod is matched with the fixing hole, and the fixing rod is movably clamped in the fixing hole, a spring 1 is installed between the side wall of the lifting seat and the side wall of the lifting block, and the spring is sleeved on the outside of the lifting rod.

[0012] Among them, the support assembly is provided with two groups, namely support assembly one and support assembly two. The support assembly one and support assembly two are symmetrically placed with the vertical center line of the connecting rod as the symmetry axis. The support assembly one and support assembly two have the same structure. Only one group is introduced here. The support assembly one includes an arc-shaped plate. The lower end of the arc-shaped plate is arranged on the upper wall of the support seat. The upper end outer wall of the arc-shaped plate is provided with a limit plate. The limit plate is provided with a through groove. The movable end of the hydraulic rod one movably penetrates the through groove, and the limit plate limits the movement of the hydraulic rod one.

[0013] Preferably, an insertion rod is installed on the inner side wall of the upper end of the arc-shaped plate on the support component, and the insertion rod is movably clamped in the linear groove and the spiral groove. Balls are provided at the ends of the insertion rod arranged at the linear groove and the spiral groove, which can reduce the friction between the insertion rod and the linear groove and the spiral groove.

[0014] Preferably, the upper wall of the support plate, the bottom wall of the rotating part, the bottom wall of the connecting block 1 and the upper wall of the connecting block 2 are all equipped with clamping assemblies, the clamping assemblies between the upper wall of the support plate and the bottom wall of the rotating part are symmetrically placed, the clamping assemblies between the bottom wall of the connecting block 1 and the upper wall of the connecting block 2 are symmetrically placed and have the same structure, the clamping assembly includes clamping member 1 and clamping member 2, the clamping member 1 and clamping member 2 are symmetrically placed and have the same structure, the clamping member 1 includes a fixing plate, the fixing plate is respectively fixedly arranged on the upper wall of the support plate, the bottom wall of the rotating part, the bottom wall of the connecting block 1 and the upper wall of the connecting block 2, a clamping rod is movably arranged on the fixing plate, the clamping rod movably penetrates the fixing plate, a twitching plate is installed at one end of the clamping rod, and a clamping plate is installed at the other end of the clamping rod, a spring four is installed between the twitching plate and the fixing plate, and the spring four is sleeved on the outside of the clamping rod;

[0015] The upper wall of the support seat and the bottom wall of the connecting block are both provided with mounting plates, pressure sensors are provided between the mounting plate and the inner upper wall of the support seat and between the mounting plate and the inner bottom wall of the connecting block, and the clamping components on the connecting block and the support seat are both arranged on the mounting plate.

[0016] After adopting the above structure, the beneficial effects of the present invention are as follows:

[0017] (1) The wires and cables are clamped and fixed by the clamping assembly between the upper wall of the support seat and the bottom wall of the rotating member. When the insertion rod is set in the linear groove, a test of applying gradually increasing tensile force to the wires and cables can be completed.

[0018] (2) The wires and cables are clamped and fixed by a clamping assembly between the upper wall of the second connecting block and the bottom wall of the first connecting block. When the insertion rod is set in the linear groove, the test of applying impact tension to the wires and cables can be completed.

[0019] (3) The wires and cables are clamped and fixed by a clamping assembly between the upper wall of the second connecting block and the bottom wall of the first connecting block. When the insertion rod is set in the spiral groove, a test of applying a rotational tension to the wires and cables can be completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0021] Figure 1 This is a schematic diagram of the structure of an automatic testing machine for tensile strength of electric wires and cables proposed by the present invention;

[0022] Figure 2 A three-dimensional diagram of an automatic tensile strength testing machine for electric wires and cables proposed by the present invention;

[0023] Figure 3 for Figure 2 A local enlarged view of point A;

[0024] Figure 4 A cross-sectional view of an automatic testing machine for tensile strength of electric wires and cables proposed by the present invention;

[0025] Figure 5 for Figure 4 A local enlarged view of point B;

[0026] Figure 6 for Figure 4 A local enlarged view of point C;

[0027] Figure 7 for Figure 4 A local enlarged view of D;

[0028] Figure 8 for Figure 4 A local enlarged view of point E;

[0029] Fig. 9 This is a schematic diagram of the structure of the linear groove and the spiral groove proposed by the present invention;

[0030] Fig.10 This is a positional relationship diagram of the mounting plate proposed by the present invention.

[0031] In the attached drawings: 1. Support seat, 2. Lifting component 1, 3. Support component 1, 4. Test component 1, 5. Rotating member, 6. Test component 2, 7. Connecting plate, 8. Limiting rod, 9. Spring 2, 10. Placement slot 1, 11. Placement slot 2, 12. Linear slot, 13. Spiral slot, 14. Connecting rod, 15. Baffle, 16. Spring 3, 17. Telescopic rod, 18. Connecting block 2, 19. Connecting block 1, 20. Placement slot 3, 21. Limiting slot, 22. Hydraulic rod 2, 23. Push plate, 24. Fixing hole, 25. Arc plate, 26. Limit plate, 27. Hydraulic rod one, 28. Lifting seat, 29. Lifting rod, 30. Lifting block, 31. Fixing rod, 32. Spring one, 33. Through slot, 34. Insert rod, 35. Clamping assembly, 36. Clamping part one, 37. Clamping part two, 38. Fixed plate, 39. Clamping rod, 40. Twitching plate, 41. Clamping plate, 42. Spring four, 43. Mounting plate, 44. Pressure sensor. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] like Figure 1-Figure 10As shown, an automatic tensile strength testing machine for wires and cables comprises a support seat 1 for supporting and fixing, a lifting assembly, a supporting assembly and a test assembly 4 are installed on the upper wall of the support seat 1, the test assembly 4 is arranged at the center position of the upper wall of the support seat 1, the supporting assembly is arranged between the lifting assembly and the test assembly 4, the lifting assembly movably penetrates the supporting assembly, a rotating part 5 is movably installed on the test assembly 4, a test assembly 2 6 is installed on the upper wall of the rotating part 5, the rotating part 5 is movably connected to the supporting assembly, and the test assembly 2 6 is movably connected to the lifting assembly.

[0035] The test component 14 includes a connecting plate 7, a limiting rod 8 and a spring 29. The lower end of the limiting rod 8 is arranged at the center position of the upper wall of the support seat 1. The support seat 1 supports and fixes the limiting rod 8. The rotating member 5 is movably sleeved on the upper end of the limiting rod 8. The connecting plate 7 is movably clamped at the center position of the bottom wall of the rotating member 5. Balls are provided at the positions where the connecting plate 7 contacts the rotating member 5, which can reduce the friction between the connecting plate 7 and the rotating member 5. The connecting plate 7 is an annular structure. The lower end of the spring 29 is arranged on the upper wall of the support seat 1. The upper end of the spring 29 is connected to the connecting plate 7. The lower end of the limiting rod 8 movably passes through the connecting plate 7, and the spring 29 is sleeved on the outside of the limiting rod 8.

[0036] The rotating member 5 is a cylindrical structure, and a placement groove 10 and a placement groove 2 11 are provided in the center of the rotating member 5. The placement groove 10 is provided at the upper end of the placement groove 2 11, and the upper end of the limit rod 8 is movably provided in the placement groove 2 11. When the rotating member 5 moves upward, the limit rod 8 can move along the placement groove 2 11. The outer wall of the rotating member 5 is provided with a straight groove 12 and a spiral groove 13. The upper end of the straight groove 12 passes through the upper wall of the rotating member 5, and the lower end of the straight groove 12 is connected with the upper end of the spiral groove 13.

[0037] The test component 2 6 includes a connecting rod 14, the lower end of which is movably clamped in a placement groove 10, and balls are provided at the positions where the connecting rod 14 contacts the rotating member 5, which can reduce the friction between the connecting rod 14 and the rotating member 5. A baffle 15 is movably sleeved on the connecting rod 14, and a spring 3 16 and a telescopic rod 17 are installed between the baffle 15 and the upper wall of the rotating member 5. The spring 3 16 is sleeved on the outer side of the connecting rod 14, and the spring 3 16 supports the baffle 15. A connecting block 2 18 is installed on the upper wall of the baffle 15. The upper end side wall of the connecting block 2 18 is an arc structure, and is provided with a plurality of groups of balls for reducing friction. The connecting rod 14 movably passes through the center of the connecting block 2 18, and a connecting block 19 is installed on the upper end of the connecting rod 14. The connecting block 19 is arranged at the upper end of the connecting block 2 18, and the connecting block 19 and the connecting block 2 18 are truncated cone structures.

[0038] A placement slot three 20 is provided in the connecting block two 18, and the placement slot three 20 is provided in two groups. The two groups of the placement slot three 20 are symmetrically placed with the vertical center line of the connecting rod 14 as the symmetry axis. A limiting slot 21 is also provided in the connecting block two 18, and the limiting slot 21 is provided in two groups. The two groups of the limiting slots 21 are symmetrically placed with the vertical center line of the connecting rod 14 as the symmetry axis. The placement slot three 20 is connected with the limiting slot 21 through-connection, and a hydraulic rod two 22 is installed in the placement slot three 20. A push plate 23 is movably connected in the limiting slot 21, and the push plate 23 is connected to the movable end of the hydraulic rod two 22. The outer wall of the push plate 23 is an arc structure, which matches the arc of the outer wall of the connecting block two 18; the hydraulic rod two 22 can drive the push plate 23 to move outward along the limiting slot 21 when working, and the push plate 23 extends out of the connecting block two 18, so as to facilitate the lifting component to drive the connecting block two 18.

[0039] The bottom wall of the connecting block 19 is provided with fixing holes 24, and the fixing holes 24 are provided with two groups, and the two groups of fixing holes 24 are symmetrically placed with the vertical center line of the connecting rod 14 as the symmetry axis.

[0040] The lifting assembly is provided with two groups, namely, lifting assembly 1 2 and lifting assembly 2. The lifting assembly 1 2 and lifting assembly 2 are symmetrically placed with the vertical center line of the connecting rod 14 as the symmetry axis. The lifting assembly 1 2 and lifting assembly 2 have the same structure. Only one group is introduced here. The lifting assembly 1 2 includes a hydraulic rod 1 27. The fixed end of the hydraulic rod 1 27 is arranged on the upper wall of the support seat 1. The movable end of the hydraulic rod 1 27 is installed with a lifting seat 28. A lifting rod 29 is movably installed in the lifting seat 28. The lifting rod 29 is arranged through the lifting seat 28, and a lifting block 30 is installed at one end of the lifting rod 29 close to the connecting block 19. The bottom wall of the lifting block 30 is an inclined structure, and the side wall is an arc structure. A fixing rod 31 is installed on the upper wall of the lifting block 30. The fixing rod 31 is matched with the fixing hole 24, and the fixing rod 31 is movably connected in the fixing hole 24. A spring 32 is installed between the side wall of the lifting seat 28 and the side wall of the lifting block 30, and the spring 32 is sleeved on the outer side of the lifting rod 29;

[0041] It should be noted that the hydraulic rod 27 drives the lifting seat 28 to move up and down, the lifting seat 28 drives the lifting rod 29 to move up and down, the lifting rod 29 drives the lifting block 30 to move up and down, and when the lifting block 30 moves up, it drives the fixing rod 31 to move up, and the fixing rod 31 is inserted into the fixing hole 24. As the hydraulic rod 27 continues to move up, the lifting block 30 lifts the connecting block 19, the connecting block 19 drives the connecting rod 14 to move up, the connecting rod 14 drives the rotating member 5 to move up, the rotating member 5 drives the connecting plate 7 to move up, and the connecting plate 7 stretches the spring 29;

[0042] The hydraulic rod 1 27 drives the lifting seat 28 to move downward, the lifting seat 28 drives the lifting rod 29 to move downward, and the lifting rod 29 drives the lifting block 30 to move downward. When it moves downward to the upper wall of the connecting block 2 18, the inclined surface of the lifting block 30 contacts the side wall of the upper end of the connecting block 2 18. Since the side wall of the upper end of the connecting block 2 18 is provided with a ball, as the hydraulic rod 1 27 continues to move downward, the connecting block 2 18 drives the lifting block 30, and the lifting block 30 moves away from the connecting block 2 18. The lifting block 30 drives the lifting rod 29 to slide along the lifting seat 28, and the spring 1 32 is compressed until the lifting block 30 slides downward along the side wall of the connecting block 2 18 to the limit. After the lower end of the slot 21 is positioned, the hydraulic rod 22 drives the pushing plate 23 to extend out of the connecting block 2 18, and then the hydraulic rod 1 27 drives the lifting seat 28 to move up, and the lifting seat 28 drives the lifting block 30 to move up, and the upper wall of the lifting block 30 is arranged in contact with the bottom wall of the pushing plate 23, and the fixing rod 31 is arranged on the outer side of the pushing plate 23. With the lifting of the hydraulic rod 1 27, the lifting block 30 drives the pushing plate 23 to move up, and the pushing plate 23 drives the connecting block 2 18 to move up, and the connecting block 2 18 and the baffle 15 move up along the connecting rod 14, and the spring 3 16 and the telescopic rod 17 are in a stretched state, and the distance between the connecting block 19 and the connecting block 2 18 is reduced.

[0043] The support assembly is provided with two groups, namely support assembly 13 and support assembly 2. The support assembly 13 and support assembly 2 are symmetrically placed with the vertical center line of the connecting rod 14 as the symmetry axis. The support assembly 13 and support assembly 2 have the same structure, and only one group is introduced here. The support assembly 13 includes an arc plate 25, the lower end of the arc plate 25 is arranged on the upper wall of the support seat 1, and the upper end outer wall of the arc plate 25 is provided with a limit plate 26, and the limit plate 26 is provided with a through groove 33. The movable end of the hydraulic rod 1 27 is movable through the through groove 33, and the limit plate 26 limits the movement of the hydraulic rod 1 27.

[0044] An insert rod 34 is installed on the inner side wall of the upper end of the arc plate 25 on the support component 13. The insert rod 34 is movably connected in the linear groove 12 and the spiral groove 13. The insert rod 34 is provided at the ends of the linear groove 12 and the spiral groove 13 with balls, which can reduce the friction between the insert rod 34 and the linear groove 12 and the spiral groove 13;

[0045] It should be noted that when the hydraulic rod 27 works to drive the lifting seat 28 to move upward, the lifting block 30 drives the connecting block 19 to be lifted, the connecting block 19 drives the connecting rod 14 to move upward, and the connecting rod 14 drives the rotating part 5 to move upward. At this time, the insertion rod 34 is arranged in the linear groove 12. The rotating part 5 can move upward under the action of the hydraulic rod 27 and drive the connecting plate 7 to move upward. The connecting plate 7 drives the spring 29 to stretch. As the hydraulic rod 27 continues to move, the insertion rod 34 enters the spiral groove 13. Under the action of the insertion rod 34, the rotating part 5 rotates, and the baffle 15 and the connecting block 2 18 are driven to rotate through the telescopic rod 17. Under the action of the fixing rod 31 and the fixing hole 24, the connecting block 19 and the connecting rod 14 do not rotate with the rotating part 5.

[0046] The upper wall of the support plate, the bottom wall of the rotating member 5, the bottom wall of the connecting block 19 and the upper wall of the connecting block 2 18 are all equipped with a clamping assembly 35. The clamping assembly 35 between the upper wall of the support plate and the bottom wall of the rotating member 5 is symmetrically placed, and the clamping assembly 35 between the bottom wall of the connecting block 19 and the upper wall of the connecting block 2 18 is symmetrically placed and has the same structure. The clamping assembly 35 includes a clamping member 1 36 and a clamping member 2 37. The clamping member 1 36 and the clamping member 2 37 are symmetrically placed and have the same structure. The clamping member 1 36 includes A fixed plate 38, the fixed plate 38 is respectively fixedly arranged on the upper wall of the support plate, the bottom wall of the rotating member 5, the bottom wall of the connecting block 19 and the upper wall of the connecting block 2 18, a clamping rod 39 is movably installed on the fixed plate 38, the clamping rod 39 movably penetrates the fixed plate 38, a twitching plate 40 is installed at one end of the clamping rod 39, a clamping plate 41 is installed at the other end of the clamping rod 39, a spring 42 is installed between the twitching plate 40 and the fixed plate 38, and the spring 42 is sleeved on the outside of the clamping rod 39;

[0047] The upper wall of the support seat 1 and the bottom wall of the connecting block 19 are both provided with a mounting plate 43, a pressure sensor 44 is provided between the mounting plate 43 and the inner upper wall of the support seat 1 and between the mounting plate 43 and the inner bottom wall of the connecting block 19, and the clamping assembly 35 on the connecting block 19 and the support seat 1 are both provided on the mounting plate 43;

[0048] It should be noted that when one end of the wire and cable needs to be clamped and fixed, the pulling plate 40 is driven to move outward, the pulling plate 40 drives the clamping rod 39 to move outward, the spring four 42 is stretched, and the spacing between the clamping plates 41 is increased. One end of the wire and cable is placed between the clamping piece 1 36 and the clamping piece 2 37, and then the pulling plate 40 is released. The spring four 42 drives the pulling plate 40, the clamping piece 1 36 and the clamping piece 2 37 are close to each other, and one end of the circuit or wire is clamped and fixed.

[0049] The specific use is as follows: initially, the lifting block 30 is disposed between the connecting block 1 19 and the connecting block 2 18;

[0050] When it is necessary to gradually apply tension to wires and cables for testing:

[0051] First, open the clamping assembly 35 between the upper wall of the support seat 1 and the bottom wall of the rotating member 5, clamp and fix one end of the wire and cable, drive the twitching plate 40 to move outward, the twitching plate 40 drives the clamping rod 39 to move outward, the spring four 42 is stretched, the spacing between the clamping plates 41 is increased, and one end of the wire and cable is placed between the clamping member 1 36 and the clamping member 2 37, and then release the twitching plate 40, the spring four 42 drives the twitching plate 40, the clamping member 1 36 and the clamping member 2 37 are close to each other, and the other end of the circuit and the wire is clamped and fixed in the above manner;

[0052] The hydraulic rod 27 works to drive the lifting seat 28 to move upward, the lifting seat 28 drives the lifting rod 29 to move upward, the lifting rod 29 drives the lifting block 30 to move upward, and when the lifting block 30 moves upward, it drives the fixing rod 31 to move upward, and the fixing rod 31 is inserted into the fixing hole 24. As the hydraulic rod 27 continues to move upward, the lifting block 30 lifts the connecting block 19, the connecting block 19 drives the connecting rod 14 to move upward, the connecting rod 14 drives the rotating member 5 to move upward, the rotating member 5 drives the connecting plate 7 to move upward, the connecting plate 7 stretches the spring 29, and the rotating member 5 pulls the wires and cables at the same time, and the wires and cables are in a straight state. At this time, the insertion rod 34 is arranged in the linear groove 12, and the pressure sensor 44 in the support seat 1 is used to detect the pulling force;

[0053] After the test, the hydraulic rod 27 works to drive the lifting seat 28 to move downward. Under the action of the spring 29 and gravity, the rotating member 5 moves downward, the distance between the support seat 1 and the rotating member 5 is reduced, and the wires and cables are removed from the clamping assembly 35.

[0054] When it is necessary to apply impact tension to wires and cables for testing:

[0055] The hydraulic rod 1 27 drives the lifting seat 28 to move downward, the lifting seat 28 drives the lifting rod 29 to move downward, and the lifting rod 29 drives the lifting block 30 to move downward. When it moves downward to the upper wall of the connecting block 2 18, the inclined surface of the lifting block 30 contacts the side wall of the upper end of the connecting block 2 18. Since the side wall of the upper end of the connecting block 2 18 is provided with a ball, as the hydraulic rod 1 27 continues to move downward, the connecting block 2 18 drives the lifting block 30, and the lifting block 30 moves away from the connecting block 2 18. The lifting block 30 drives the lifting rod 29 to slide along the lifting seat 28, and the spring 1 32 is compressed until the lifting block 30 slides downward along the side wall of the connecting block 2 18 to the lower end of the limit groove 21. After the end, the hydraulic rod 22 drives the push plate 23 to extend out of the connection block 2 18, and then the hydraulic rod 1 27 drives the lifting seat 28 to move up, and the lifting seat 28 drives the lifting block 30 to move up, and the upper wall of the lifting block 30 is arranged in contact with the bottom wall of the push plate 23, and the fixing rod 31 is arranged on the outer side of the push plate 23. With the lifting of the hydraulic rod 1 27, the lifting block 30 drives the push plate 23 to move up, and the push plate 23 drives the connection block 2 18 to move up, and the connection block 2 18 and the baffle 15 move up along the connection rod 14, and the spring 3 16 and the telescopic rod 17 are in a stretched state, and the distance between the connection block 19 and the connection block 2 18 is reduced, and the hydraulic rod 1 27 stops working;

[0056] Then, the clamping assembly 35 between the upper wall of the second connection block 18 and the bottom wall of the first connection block 19 is opened, and another group of the same type of wires and cables is clamped and fixed in the above manner;

[0057] The hydraulic rod 22 drives the push plate 23 to retract into the connection block 2 18. Under the action of the spring 3 16, the connection block 2 18 drops rapidly. During the descent of the connection block 2 18, the arc-shaped side wall of the lifting block 30 contacts the side wall of the connection block 2 18. The connection block 2 18 drives the lifting block 30, and the lifting block 30 moves away from the connection block 2 18. The lifting block 30 drives the lifting rod 29 to slide along the lifting seat 28, and the spring 1 32 is compressed. During the rapid descent of the connection block 2 18, an impact force is applied to the wires and cables between the connection block 1 19 and the connection block 2 18. The pressure sensor 44 in the connection block 19 is used to detect the tension.

[0058] After the test is completed, the wires and cables are removed from the clamping assembly 35.

[0059] When it is necessary to apply rotational force to the wires and cables for testing:

[0060] Open the clamping assembly 35 between the upper wall of the second connection block 18 and the bottom wall of the first connection block 19, and clamp and fix another group of wires and cables of the same type in the above manner;

[0061] When the hydraulic rod 27 works to drive the lifting seat 28 to move upward, the lifting block 30 drives the connecting block 19 to be lifted, the connecting block 19 drives the connecting rod 14 to move upward, and the connecting rod 14 drives the rotating member 5 to move upward. At this time, the insertion rod 34 is arranged in the linear groove 12. As the hydraulic rod 27 continues to move, the insertion rod 34 enters the spiral groove 13. Under the action of the insertion rod 34, the rotating member 5 rotates, and the baffle 15 and the connecting block 2 18 are driven to rotate through the telescopic rod 17. Under the action of the fixing rod 31 and the fixing hole 24, the connecting block 19 and the connecting rod 14 do not rotate with the rotating member 5, one end of the wire and cable fixed on the connecting block 19 does not rotate, and one end of the wire and cable on the connecting block 2 18 driven by the rotating member 5 rotates. The pressure sensor 44 in the connecting block 19 is used to detect the tension.

[0062] Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents. In short, if those skilled in the art are inspired by them and design structural modes and embodiments similar to the technical solution without creativity without departing from the purpose of the present invention, they shall all fall within the scope of protection of the present invention.

Claims

1. An automatic tensile strength testing machine for wires and cables, characterized in that: It includes a support seat for supporting and fixing, the upper wall of the support seat is equipped with a lifting assembly, a supporting assembly and a test assembly 1, the test assembly 1 is arranged at the center position of the upper wall of the support seat, the supporting assembly is arranged between the lifting assembly and the test assembly 1, the lifting assembly movably penetrates the supporting assembly, a rotating part is movably installed on the test assembly 1, and a test assembly 2 is installed on the upper wall of the rotating part, the rotating part is movably connected to the support assembly, and the test assembly 2 is movably connected to the lifting assembly.

2. The automatic tensile strength testing machine for electric wires and cables according to claim 1, characterized in that: The test component 1 includes a connecting plate, a limit rod and a spring 2. The lower end of the limit rod is arranged at the center position of the upper wall of the support seat, the rotating part is movably sleeved on the upper end of the limit rod, and the connecting plate is movably clamped at the center position of the bottom wall of the rotating part. The connecting plate is an annular structure, the lower end of the spring 2 is arranged on the upper wall of the support seat, the upper end of the spring 2 is connected to the connecting plate, the lower end of the limit rod movably passes through the connecting plate, and the spring 2 is sleeved on the outside of the limit rod.

3. The automatic tensile strength testing machine for electric wires and cables according to claim 2, characterized in that: The rotating part is a cylindrical structure, and a placement groove 1 and a placement groove 2 are provided in the center of the rotating part. The placement groove 1 is provided at the upper end of the placement groove 2, and the upper end of the limit rod is movably provided in the placement groove 2. A straight groove and a spiral groove are provided on the outer wall of the rotating part. The upper end of the straight groove passes through the upper wall of the rotating part, and the lower end of the straight groove is connected with the upper end of the spiral groove.

4. The automatic tensile strength testing machine for electric wires and cables according to claim 3, characterized in that: The test component 2 includes a connecting rod, the lower end of which is movably clamped in a placement groove 1, a baffle is movably sleeved on the connecting rod, a spring 3 and a telescopic rod are installed between the baffle and the upper wall of the rotating part, the spring 3 is sleeved on the outer side of the connecting rod, a connecting block 2 is installed on the upper wall of the baffle, the connecting rod is movably arranged through the center of the connecting block 2, a connecting block 1 is installed on the upper end of the connecting rod, the connecting block 1 is arranged at the upper end of the connecting block 2, and the connecting block 1 and the connecting block 2 are truncated cone structures.

5. The automatic tensile strength testing machine for electric wires and cables according to claim 4, characterized in that: A placement slot three is provided in the connecting block two, and two groups of placement slots three are provided. The two groups of placement slots three are symmetrically placed with the vertical center line of the connecting rod as the symmetry axis. A limiting slot is also provided in the connecting block two, and two groups of limiting slots are provided. The two groups of limiting slots are symmetrically placed with the vertical center line of the connecting rod as the symmetry axis. The placement slot three is through-connected with the limiting slot. A hydraulic rod two is installed in the placement slot three, and a push plate is movably connected in the limit slot. The push plate is connected to the movable end of the hydraulic rod two, and the outer side wall of the push plate is an arc structure, which matches the arc of the outer side wall of the connecting block two.

6. The automatic tensile strength testing machine for electric wires and cables according to claim 5, characterized in that: A bottom wall of the connecting block is provided with fixing holes, and the fixing holes are provided with two groups. The two groups of fixing holes are symmetrically placed with the vertical center line of the connecting rod as the symmetry axis.

7. The automatic tensile strength testing machine for electric wires and cables according to claim 6, characterized in that: The lifting assembly is provided with two groups, namely lifting assembly 1 and lifting assembly 2. The lifting assembly 1 and lifting assembly 2 are symmetrically placed with the vertical center line of the connecting rod as the symmetry axis. The lifting assembly 1 and lifting assembly 2 have the same structure. The lifting assembly 1 includes a hydraulic rod 1. The fixed end of the hydraulic rod 1 is arranged on the upper wall of the support seat. The movable end of the hydraulic rod 1 is installed with a lifting seat. A lifting rod is movably installed in the lifting seat. The lifting rod runs through the lifting seat. A lifting block is installed at one end of the lifting rod close to the connecting block 1. The bottom wall of the lifting block is an inclined structure, and the side wall is an arc structure. A fixing rod is installed on the upper wall of the lifting block. The fixing rod is matched with the fixing hole, and the fixing rod is movably clamped in the fixing hole. A spring 1 is installed between the side wall of the lifting seat and the side wall of the lifting block, and the spring is sleeved on the outside of the lifting rod.

8. The automatic tensile strength testing machine for electric wires and cables according to claim 7, characterized in that: The support assembly is provided with two groups, namely support assembly one and support assembly two. The support assembly one and support assembly two are symmetrically placed with the vertical center line of the connecting rod as the symmetry axis. The support assembly one and support assembly two have the same structure. The support assembly one includes an arc-shaped plate, the lower end of the arc-shaped plate is arranged on the upper wall of the support seat, the upper outer wall of the arc-shaped plate is provided with a limit plate, the limit plate is provided with a through groove, and the movable end of the hydraulic rod one movably penetrates the through groove.

9. The automatic tensile strength testing machine for electric wires and cables according to claim 8, characterized in that: An insert rod is installed on the inner side wall of the upper end of the arc-shaped plate on the support component 1. The insert rod is movably connected in the linear groove and the spiral groove. Balls are provided at the ends of the linear groove and the spiral groove.

10. The automatic tensile strength testing machine for electric wires and cables according to claim 9, characterized in that: The upper wall of the support plate, the bottom wall of the rotating part, the bottom wall of the connecting block 1 and the upper wall of the connecting block 2 are all equipped with clamping assemblies. The clamping assemblies between the upper wall of the support plate and the bottom wall of the rotating part are symmetrically placed, and the clamping assemblies between the bottom wall of the connecting block 1 and the upper wall of the connecting block 2 are symmetrically placed and have the same structure. The clamping assembly includes a clamping member 1 and a clamping member 2, and the clamping member 1 and the clamping member 2 are symmetrically placed and have the same structure. The clamping member 1 includes a fixing plate, and the fixing plate is respectively fixed to the upper wall of the support plate, the bottom wall of the rotating part, the bottom wall of the connecting block 1 and the connecting block On the second upper wall, a clamping rod is movably installed on the fixed plate, and the clamping rod movably penetrates the fixed plate. A pulling plate is installed at one end of the clamping rod, and the clamping plate is installed at the other end of the clamping rod. A spring four is installed between the pulling plate and the fixed plate, and the spring four is sleeved on the outside of the clamping rod; the upper wall of the support seat and the bottom wall of the connecting block are both provided with mounting plates, and pressure sensors are provided between the mounting plate and the inner upper wall of the support seat and between the mounting plate and the inner bottom wall of the connecting block, and the clamping components on the connecting block and the support seat are both arranged on the mounting plate.

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