A tension detection device for power cables

Abstract

The present invention belongs to the technical field of power cable detection equipment, and in particular relates to a tension detection device for power cables, comprising a first bracket, a first motor, a first mounting seat, a second mounting seat, a first fixing assembly, a second fixing assembly and a third fixing assembly; the second mounting seat is movably mounted on the first bracket and is located above the first mounting seat; one end of the output shaft of the first motor is transmission-connected to the second mounting seat; the first mounting seat and the second mounting seat have the same structure and are symmetrically arranged; the first fixing assembly is movably clamped in the first mounting seat, and the second fixing assembly is rotatably mounted in the first mounting seat and is located in the first fixing assembly; the third fixing assembly is elastically mounted in the first mounting seat and is located below the first fixing assembly to prevent the damage of the sample caused by clamping from affecting the experimental results.

Description

Technical Field

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

[0002] The tensile load on power cables is an important indicator of power line safety. When the transmission line is disturbed by strong winds or the tensile load increases due to ice and snow adhering to the line, the tensile load may exceed the maximum tensile force that the cable can withstand, which will cause the cable to break. The pole may also be damaged or collapsed due to unbalanced tensile force on both ends of the power pole. During the installation process, the installation distance between the two power poles needs to be determined by calculating the tensile force of the cable.

[0003] When testing a sample, the existing tension detection device for power cables fixes the two ends of the sample with clamps, and then moves the two sets of clamps away from each other until the sample breaks, thereby measuring the tension. However, this method has a defect, that is, under the pressure of the clamps, the part pressed by the clamps will be damaged, so that when the two sets of clamps are moved away from each other, the sample breaks from the damaged part, affecting the test results. Summary of the invention

[0004] In view of the above problems, the present invention provides a tension detection device for a power cable, comprising a first bracket, a first motor, a first mounting seat, a second mounting seat, a first fixing assembly, a second fixing assembly and a third fixing assembly;

[0005] The first mounting seat is fixedly mounted on the lower end of the first bracket, and the second mounting seat is movably mounted on the first bracket and is located above the first mounting seat;

[0006] One end of the body of the first motor is fixedly mounted on the top of the first bracket, and one end of the output shaft of the first motor is transmission-connected to the second mounting seat;

[0007] The first mounting seat and the second mounting seat have the same structure and are symmetrically arranged; the first fixing component is movably engaged in the first mounting seat, and the second fixing component is rotatably mounted in the first mounting seat and is located in the first fixing component;

[0008] The third fixing component is elastically installed in the first mounting seat and is located below the first fixing component.

[0009] Furthermore, the first bracket includes a first connecting plate, a second connecting plate, a third connecting plate, and a first mounting plate;

[0010] Two ends of the second connecting plate are fixedly connected to the first connecting plate and the third connecting plate respectively; the first connecting plate and the third connecting plate are located on the same side of the second connecting plate, and the first connecting plate is located below the third connecting plate;

[0011] A first screw rod is further provided between the first connecting plate and the third connecting plate, and the first motor is drivingly connected to the first screw rod; a second mounting plate is fixedly mounted on the first connecting plate, and the second mounting plate is fixedly connected to the first mounting seat; one end of the first screw rod is rotatably connected to the second mounting plate, and the other end of the first screw rod is rotatably connected to the third connecting plate;

[0012] The first screw rod is also movably connected with a first mounting plate, and the first mounting plate is fixedly connected to the second mounting seat; the first mounting plate is threadedly connected to the first screw rod via an internal thread.

[0013] Further, the first mounting seat includes a fourth connecting plate, a fifth connecting plate and a sixth connecting plate;

[0014] One ends of the two groups of fourth connecting plates are respectively fixedly connected to the two ends of the fifth connecting plate, and the upper ends of the fourth connecting plates are provided with a first track, a second track and a third track, the first track and the second track are located on the same side of the third track, the first track and the second track are located on the same straight line and are parallel to the third track;

[0015] The first fixing component is movably connected to the first rail, the second rail and the third rail; the lower end of the first rail, the upper end of the second rail and both ends of the third rail are provided with blocking pieces;

[0016] The second fixing assembly is installed in a gap provided between the first track and the second track;

[0017] The sixth connecting plate covers the lower ends of the fourth connecting plate and the fifth connecting plate, and is fixedly connected to the first connecting plate; the third fixing assembly is elastically connected to the sixth connecting plate.

[0018] Further, the first fixing assembly includes a first fixing plate, a second screw rod and a second fixing plate;

[0019] The second fixed plate has the same structure as the first fixed plate and is equal in size; two groups of first sliding grooves are respectively provided at both ends of the first fixed plate, and the two groups of first sliding grooves of the first fixed plates are respectively movably connected to the second track and the third track; two groups of first sliding grooves are also respectively provided at both ends of the second fixed plate, and the two groups of first sliding grooves of the second fixed plates are respectively movably connected to the first track and the third track.

[0020] Furthermore, a wire hole is respectively opened at the center of the first fixing plate and the second fixing plate, and the wire hole passes through the first fixing plate and the second fixing plate;

[0021] The first fixing plate and the second fixing plate are also respectively provided with two groups of first threaded holes, and the second screw rod movably passes through the first threaded holes and is threadedly connected with the first threaded holes;

[0022] A second motor is also provided on a side of the second fixing plate away from the first fixing plate. One end of the body of the second motor is fixedly connected to the second fixing plate; one end of the output shaft of the second motor is transmission-connected to the second screw rod.

[0023] Furthermore, the second fixing assembly includes a third motor, a first connecting rod, a third fixing plate, a second connecting rod, a fourth fixing plate, a fourth motor and a third screw rod;

[0024] One end of the body of the third motor is fixedly installed in the gap between the first track and the second track; one end of the output shaft of the third motor is transmission-connected to one end of the first connecting rod;

[0025] The other end of the first connecting rod is fixedly connected to one end of the third fixing plate, and the other end of the third fixing plate is fixedly connected to one end of the second connecting rod; the other end of the second connecting rod is transmission-connected to the fourth connecting plate;

[0026] The fourth fixing plate and the third fixing plate are both provided with two groups of second threaded holes; the third screw rod movably passes through the second threaded holes and is threadedly connected to the second threaded holes; one end of the body of the fourth motor is fixedly mounted on a side of the third fixing plate away from the fourth fixing plate, and one end of the output shaft of the fourth motor is drivingly connected to the third screw rod.

[0027] Furthermore, the third fixing assembly includes a first fixing ring, a connecting ring, a first spring and a first clamping assembly;

[0028] One end of the first spring is elastically connected to the sixth connecting plate, and the other end of the first spring is elastically connected to one end of the connecting ring;

[0029] The other end of the connecting ring is fixedly connected to the first fixing ring; a plurality of groups of first clamping holes are evenly spaced on the first fixing ring, and the first clamping assembly is movably clamped in the first clamping holes; a second clamping assembly is also arranged in the first clamping assembly.

[0030] Furthermore, the first clamping assembly includes a first connector, four groups of third connecting rods and a plurality of groups of second clamping blocks;

[0031] One ends of the four groups of third connecting rods are respectively fixedly installed on the lower end of the first connecting body, and several groups of second clamping blocks are also arranged on the third connecting rods. The cross-section of the second clamping blocks is a right triangle, and the angle formed by the hypotenuse of the right triangle and the third connecting rod is an acute angle.

[0032] Furthermore, the second clamping assembly includes a second connector, a fourth connecting rod and a third clamping block;

[0033] One end of the four groups of fourth connecting rods is elastically connected to the lower end of the second connecting body, and the second connecting body and the four groups of fourth connecting rods constitute a spring sheet. The fourth connecting rod is also provided with a third clamping block, and the third clamping block passes through the third connecting rod.

[0034] Furthermore, first card slots are provided on both side walls of the first card hole;

[0035] A first clamping block and a second spring are also provided in the first clamping slot, one end of the first clamping block is elastically connected to the bottom of the first clamping slot through the second spring; the other end of the first clamping block is clamped between the upper and lower groups of the second clamping blocks; the other end of the first clamping block is an inclined surface, and is parallel to the inclined surface of the second clamping block.

[0036] The beneficial effects of the present invention are:

[0037] 1. By arranging baffles at the lower end of the first track, the upper end of the second track and both ends of the third track, when the second motor is reversed, the first fixing plate moves away from the second fixing plate until the first fixing plate contacts the baffle at the upper end of the second track. Under the support of the baffle, the second fixing plate starts to move away from the first fixing plate until the second fixing plate contacts the baffle at the lower end of the first track, so that the second fixing assembly returns to its original state.

[0038] 2. The power cable sample is wound around the third fixing plate and the fourth fixing plate by rotating the third motor forward, and then the second motor is rotated forward so that the first fixing plate and the second fixing plate clamp the power cable sample on the outer surfaces of the third fixing plate and the fourth fixing plate, thereby increasing the clamping force area of ​​the sample and preventing the sample from being damaged due to clamping and affecting the experimental results.

[0039] 3. When one end of the power cable sample is inserted into the first fixing ring, the first spring is provided so that the power cable sample does not separate from the detection device when it is contracted.

[0040] 4. When the third clamping block is not pressed, the fourth connecting rod expands, and the first clamping block is clamped between two groups of the second clamping blocks. At this time, the second clamping block can only move downward; when the third clamping block is pressed, the fourth connecting rod gathers, and the second clamping block is separated from the clamping range of the first clamping block, so that the third connecting rod can be separated from the first clamping hole.

[0041] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures pointed out in the description, claims and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0043] Figure 1 A schematic diagram showing the structure of a detection device according to an embodiment of the present invention is shown;

[0044] Figure 2 A schematic structural diagram of a first bracket according to an embodiment of the present invention is shown;

[0045] Figure 3 A schematic structural diagram of a first mounting base according to an embodiment of the present invention is shown;

[0046] Figure 4 A schematic structural diagram of a first fixing assembly according to an embodiment of the present invention is shown;

[0047] Figure 5 A schematic structural diagram of a second fixing assembly according to an embodiment of the present invention is shown;

[0048] Figure 6 A schematic structural diagram of a third fixing assembly according to an embodiment of the present invention is shown;

[0049] Figure 7 A schematic structural diagram of a first clamping assembly according to an embodiment of the present invention is shown;

[0050] Figure 8 A schematic structural diagram of a second clamping assembly according to an embodiment of the present invention is shown;

[0051] Fig. 9 A schematic cross-sectional structure diagram of a first fixing ring according to an embodiment of the present invention is shown.

[0052] In the figure: 1, first bracket; 11, first connecting plate; 12, second connecting plate; 13, third connecting plate; 14, first screw rod; 15, first mounting plate; 16, second mounting plate; 2, first motor; 3, first mounting seat; 31, fourth connecting plate; 32, fifth connecting plate; 33, sixth connecting plate; 34, first track; 35, second track; 36, third track; 37, baffle; 4, second mounting seat; 5, first fixing assembly; 51, first fixing plate; 52, first slide groove; 53, wire hole; 54, second screw rod; 55, second motor; 56, first threaded hole; 57, second fixing plate; 6, second fixing assembly Part; 61, third motor; 62, first connecting rod; 63, third fixing plate; 64, second connecting rod; 65, fourth fixing plate; 66, fourth motor; 67, third screw rod; 68, second threaded hole; 7, third fixing assembly; 71, first fixing ring; 711, first slot; 712, first clamping block; 713, second spring; 72, connecting ring; 73, first spring; 74, first clamping assembly; 741, first connecting body; 742, third connecting rod; 743, second clamping block; 75, first clamping hole; 76, second clamping assembly; 761, second connecting body; 762, fourth connecting rod; 763, third clamping block. DETAILED DESCRIPTION

[0053] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0054] The embodiment of the present invention provides a tension detection device for a power cable, comprising a first bracket 1, a first motor 2, a first mounting seat 3, a second mounting seat 4, a first fixing component 5, a second fixing component 6 and a third fixing component 7. For example, Figure 1 shown.

[0055] The first mounting seat 3 is fixedly mounted on the lower end of the first bracket 1, and the second mounting seat 4 is movably mounted on the first bracket 1 and is located above the first mounting seat 3;

[0056] One end of the body of the first motor 2 is fixedly mounted on the top of the first bracket 1 , and one end of the output shaft of the first motor 2 is drivingly connected to the second mounting seat 4 .

[0057] The first mounting seat 3 and the second mounting seat 4 have the same structure and are symmetrically arranged. Here, the first mounting seat 3 is taken as an example to illustrate the specific structure of the first mounting seat 3 and the second mounting seat 4. The first fixing component 5 is movably clamped in the first mounting seat 3, and the second fixing component 6 is rotatably installed in the first mounting seat 3 and located in the first fixing component 5; the first fixing component 5 and the second fixing component 6 are used to fix the power cable sample to prevent the sample from falling off.

[0058] The third fixing component 7 is elastically mounted in the first mounting seat 3 and is located below the first fixing component 5 . The third fixing component 7 is used to fix one end of the power cable sample.

[0059] Exemplarily, the two ends of the power cable sample are respectively passed through two groups of the first fixing components 5 and two groups of the second fixing components 6, and are respectively fixedly connected to the two groups of the third fixing components 7. Then, by starting the first motor 2, the second mounting seat 4 is moved in the vertical direction on the first bracket 1 to perform a tensile test on the power cable sample.

[0060] The first bracket 1 includes a first connecting plate 11, a second connecting plate 12, a third connecting plate 13, and a first mounting plate 15. For example, Figure 2 shown.

[0061] The two ends of the second connecting plate 12 are respectively fixedly connected to the first connecting plate 11 and the third connecting plate 13. The first connecting plate 11 and the third connecting plate 13 are located on the same side of the second connecting plate 12, and the first connecting plate 11 is located below the third connecting plate 13.

[0062] A first screw rod 14 is further provided between the first connecting plate 11 and the third connecting plate 13, and the first motor 2 is transmission-connected to the first screw rod 14; a second mounting plate 16 is fixedly mounted on the first connecting plate 11, and the second mounting plate 16 is fixedly connected to the first mounting seat 3. One end of the first screw rod 14 is rotationally connected to the second mounting plate 16, and the other end of the first screw rod 14 is rotationally connected to the third connecting plate 13.

[0063] The first screw rod 14 is also movably connected with a first mounting plate 15, and the first mounting plate 15 is fixedly connected to the second mounting seat 4; the first mounting plate 15 is threadedly connected to the first screw rod 14 via an internal thread, and moves along the direction of the first screw rod 14 when the first screw rod 14 rotates.

[0064] Exemplarily, the first motor 2 is started to rotate the first screw rod 14 , thereby driving the first mounting plate 15 to move in the direction of the first screw rod 14 .

[0065] The first mounting seat 3 and the second mounting seat 4 have the same structure and are symmetrically arranged. To avoid redundancy, only the first mounting seat 3 is taken as an example here.

[0066] The first mounting base 3 includes a fourth connecting plate 31, a fifth connecting plate 32 and a sixth connecting plate 33. For example, Figure 3 shown.

[0067] One end of the two groups of fourth connecting plates 31 are fixedly connected to the two ends of the fifth connecting plate 32 respectively, and the upper end of the fourth connecting plate 31 is provided with a first track 34, a second track 35 and a third track 36, the first track 34 and the second track 35 are located on the same side of the third track 36, the first track 34 and the second track 35 are located on the same straight line and are parallel to the third track 36.

[0068] The first fixing component 5 is movably connected to the first rail 34, the second rail 35 and the third rail 36; the lower end of the first rail 34, the upper end of the second rail 35 and the two ends of the third rail 36 are provided with blocking pieces 37, which prevent the first fixing component 5 from leaving the rail and facilitate the movement of the first fixing component 5.

[0069] A gap is provided between the first rail 34 and the second rail 35 for installing the second fixing assembly 6 .

[0070] The sixth connecting plate 33 covers the lower ends of the fourth connecting plate 31 and the fifth connecting plate 32 , and is fixedly connected to the first connecting plate 11 ; the third fixing assembly 7 is elastically connected to the sixth connecting plate 33 .

[0071] The first fixing assembly 5 includes a first fixing plate 51, a second screw rod 54 and a second fixing plate 57. For example, Figure 4 shown.

[0072] The second fixing plate 57 has the same structure and size as the first fixing plate 51; two groups of first sliding grooves 52 are respectively provided at both ends of the first fixing plate 51, and the two groups of first sliding grooves 52 of the first fixing plate 51 are respectively movably connected to the second track 35 and the third track 36. Two groups of first sliding grooves 52 are also respectively provided at both ends of the second fixing plate 57, and the two groups of first sliding grooves 52 of the second fixing plate 57 are respectively movably connected to the first track 34 and the third track 36.

[0073] A wire hole 53 is respectively provided at the center of the first fixing plate 51 and the second fixing plate 57. The wire hole 53 passes through the first fixing plate 51 and the second fixing plate 57. The wire hole 53 is used for movably clamping the power cable sample.

[0074] Two groups of first threaded holes 56 are respectively provided on the first fixing plate 51 and the second fixing plate 57 . The second screw rod 54 movably passes through the first threaded holes 56 and is threadedly connected to the first threaded holes 56 .

[0075] A second motor 55 is further disposed on a side of the second fixing plate 57 away from the first fixing plate 51 . One end of the body of the second motor 55 is fixedly connected to the second fixing plate 57 . One end of the output shaft of the second motor 55 is drivingly connected to the second screw rod 54 .

[0076] Exemplarily, when the second motor 55 rotates forward, the first fixing plate 51 approaches the second fixing plate 57 along the direction of the second screw rod 54 until it contacts the second fixing assembly 6. At this time, the second fixing plate 57 gradually approaches the first fixing plate 51 until it contacts the second fixing assembly 6. When the second motor 55 rotates reversely, the first fixing plate 51 moves away from the second fixing plate 57 until the first fixing plate 51 contacts the baffle 37 at the upper end of the second track 35. Under the support of the baffle 37, the second fixing plate 57 starts to move away from the first fixing plate 51 until the second fixing plate 57 contacts the baffle 37 at the lower end of the first track 34, so that the second fixing assembly 6 returns to its original state.

[0077] The second fixing assembly 6 includes a third motor 61, a first connecting rod 62, a third fixing plate 63, a second connecting rod 64, a fourth fixing plate 65, a fourth motor 66 and a third screw rod 67. For example, Figure 5 shown.

[0078] One end of the body of the third motor 61 is fixedly installed between the first track 34 and the second track 35; one end of the output shaft of the third motor 61 is transmission-connected to one end of the first connecting rod 62. The other end of the first connecting rod 62 is fixedly connected to one end of the third fixing plate 63, and the other end of the third fixing plate 63 is fixedly connected to one end of the second connecting rod 64; the other end of the second connecting rod 64 is transmission-connected to the fourth connecting plate 31.

[0079] The fourth fixing plate 65 and the third fixing plate 63 are both provided with two groups of second threaded holes 68; the third screw rod 67 movably passes through the second threaded holes 68 and is threadedly connected to the second threaded holes 68. One end of the body of the fourth motor 66 is fixedly mounted on a side of the third fixing plate 63 away from the fourth fixing plate 65, and one end of the output shaft of the fourth motor 66 is drivingly connected to the third screw rod 67.

[0080] The first motor 2 , the second motor 55 and the third motor 61 are all servo motors.

[0081] Exemplarily, the power cable sample is passed between the third fixing plate 63 and the fourth fixing plate 65, and the fourth motor 66 rotates forward to make the third fixing plate 63 close to the fourth fixing plate 65, thereby clamping the power cable sample; then the fourth motor 66 rotates forward to make the power cable sample wound around the third fixing plate 63 and the fourth fixing plate 65. At this time, the second motor 55 can be started to rotate forward to make the first fixing plate 51 and the second fixing plate 57 clamp the power cable sample on the outer surface of the third fixing plate 63 and the fourth fixing plate 65, thereby increasing the clamping force area of ​​the sample and preventing the sample from being damaged due to clamping and affecting the experimental results.

[0082] The third fixing assembly 7 includes a first fixing ring 71, a connecting ring 72, a first spring 73 and a first clamping assembly 74. For example, Figure 6 shown.

[0083] One end of the first spring 73 is elastically connected to the sixth connecting plate 33 , and the other end of the first spring 73 is elastically connected to one end of the connecting ring 72 .

[0084] Exemplarily, when one end of the power cable sample is inserted into the first fixing ring 71, the first spring 73 is provided so that the power cable sample does not separate from the detection device when it is contracted.

[0085] The other end of the connecting ring 72 is fixedly connected to the first fixing ring 71. The first fixing ring 71 is provided with a plurality of first clamping holes 75 at equal intervals, and the first clamping assembly 74 is movably clamped in the first clamping holes 75; the first clamping assembly 74 is also provided with a second clamping assembly 76.

[0086] The first clamping assembly 74 includes a first connecting body 741, four sets of third connecting rods 742 and a plurality of sets of second clamping blocks 743. For example, Figure 7 shown.

[0087] One end of the four groups of the third connecting rods 742 are respectively fixedly mounted on the lower end of the first connecting body 741, and the third connecting rod 742 is also provided with a plurality of groups of second clamping blocks 743, the cross section of the second clamping block 743 is a right triangle, and the angle formed by the hypotenuse of the right triangle and the third connecting rod 742 is an acute angle. The second clamping block 743 is used to clamp in the first clamping hole 75, so that the first clamping assembly 74 is fixed in the first clamping hole 75, and one end of the power cable sample is clamped by a plurality of groups of the first clamping assemblies 74.

[0088] The second clamping assembly 76 includes a second connecting body 761, a fourth connecting rod 762 and a third clamping block 763. Figure 8 shown.

[0089] One end of the four groups of fourth connecting rods 762 is elastically connected to the lower end of the second connecting body 761, and the second connecting body 761 and the four groups of fourth connecting rods 762 constitute a spring sheet. A third clamping block 763 is also provided on the fourth connecting rod 762, and the third clamping block 763 passes through the third connecting rod 742. By pressing the third clamping block 763, the fourth connecting rod 762 is gathered towards the center line.

[0090] Exemplarily, when the second clamping assembly 76 is clamped in the first clamping assembly 74, the third clamping block 763 penetrates the third connecting rod 742, and the fourth connecting rod 762 causes the third connecting rod 742 to expand outward, so that the third connecting rod 742 is clamped tightly with the first clamping hole 75. When the third clamping block 763 is pressed, the fourth connecting rod 762 gathers, and the third connecting rod 742 returns to its original state, so that the third connecting rod 742 is detached from the first clamping hole 75.

[0091] The first clamping hole 75 is also provided with first clamping grooves 711 on both side walls. Fig. 9 shown.

[0092] A first clamping block 712 and a second spring 713 are also provided in the first clamping slot 711. One end of the first clamping block 712 is elastically connected to the bottom of the first clamping slot 711 through the second spring 713. The other end of the first clamping block 712 is clamped between the upper and lower groups of the second clamping blocks 743. The other end of the first clamping block 712 is an inclined surface, which is parallel to the inclined surface of the second clamping block 743, which facilitates the second clamping block 743 to move downward and prevents the second clamping block 743 from moving upward.

[0093] Exemplarily, when the third clamping block 763 is not pressed, the fourth connecting rod 762 expands, and the first clamping block 712 is clamped between two groups of the second clamping blocks 743. At this time, the second clamping block 743 can only move downward. When the third clamping block 763 is pressed, the fourth connecting rod 762 gathers, and the second clamping block 743 is separated from the clamping range of the first clamping block 712, so that the third connecting rod 742 can be separated from the first clamping hole 75.

[0094] The working principle of the power cable tension detection device proposed by the present invention is as follows:

[0095] Pass both ends of the power cable sample through the wire hole 53 and between the third fixing plate 63 and the fourth fixing plate 65 respectively, and insert them into the first fixing ring 71; press down several groups of the first connectors 741 so that the two ends of the power cable sample are clamped in the first fixing ring 71.

[0096] Start the third motor 61 to make it rotate forward, so that the power cable sample is wound around the surfaces of the third fixing plate 63 and the fourth fixing plate 65; then start the second motor 55 to make the first fixing plate 51 and the second fixing plate 57 approach each other until the power cable sample on the third fixing plate 63 and the fourth fixing plate 65 are clamped; finally, start the first motor 2 until the power cable sample is broken, and record the pulling force when it is broken, thereby avoiding the situation where the sample is damaged due to the use of the clamp.

[0097] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of the present invention is defined by the attached claims and their equivalents.

Claims

1. A tension detection device for a power cable, characterized in that: It comprises a first bracket (1), a first motor (2), a first mounting seat (3), a second mounting seat (4), a first fixing assembly (5), a second fixing assembly (6) and a third fixing assembly (7); The first mounting seat (3) is fixedly mounted on the lower end of the first bracket (1), and the second mounting seat (4) is movably mounted on the first bracket (1) and is located above the first mounting seat (3); One end of the body of the first motor (2) is fixedly mounted on the top of the first bracket (1), and one end of the output shaft of the first motor (2) is drivingly connected to the second mounting seat (4); The first mounting seat (3) and the second mounting seat (4) have the same structure and are symmetrically arranged; the first fixing component (5) is movably clamped in the first mounting seat (3), and the second fixing component (6) is rotatably mounted in the first mounting seat (3) and is located in the first fixing component (5); The third fixing component (7) is elastically mounted in the first mounting seat (3) and is located below the first fixing component (5); The first bracket (1) comprises a first connecting plate (11), a second connecting plate (12), a third connecting plate (13), and a first mounting plate (15); Two ends of the second connecting plate (12) are fixedly connected to the first connecting plate (11) and the third connecting plate (13) respectively; the first connecting plate (11) and the third connecting plate (13) are located on the same side of the second connecting plate (12), and the first connecting plate (11) is located below the third connecting plate (13); A first screw rod (14) is further provided between the first connecting plate (11) and the third connecting plate (13), and the first motor (2) is drivingly connected to the first screw rod (14); a second mounting plate (16) is fixedly mounted on the first connecting plate (11), and the second mounting plate (16) is fixedly connected to the first mounting seat (3); one end of the first screw rod (14) is rotationally connected to the second mounting plate (16), and the other end of the first screw rod (14) is rotationally connected to the third connecting plate (13); A first mounting plate (15) is also movably connected to the first screw rod (14), and the first mounting plate (15) is fixedly connected to the second mounting seat (4); the first mounting plate (15) is threadedly connected to the first screw rod (14) via an internal thread; The first mounting seat (3) comprises a fourth connecting plate (31), a fifth connecting plate (32) and a sixth connecting plate (33); One end of the two groups of fourth connecting plates (31) are respectively fixedly connected to two ends of the fifth connecting plate (32); a first track (34), a second track (35) and a third track (36) are provided at the upper end of the fourth connecting plate (31); the first track (34) and the second track (35) are located on the same side of the third track (36); the first track (34) and the second track (35) are located on the same straight line and are parallel to the third track (36); The first fixing assembly (5) is movably clamped on the first rail (34), the second rail (35) and the third rail (36); the lower end of the first rail (34), the upper end of the second rail (35) and both ends of the third rail (36) are provided with blocking pieces (37); The second fixing assembly (6) is installed in a gap provided between the first rail (34) and the second rail (35); The sixth connecting plate (33) covers the lower ends of the fourth connecting plate (31) and the fifth connecting plate (32), and is fixedly connected to the first connecting plate (11); the third fixing assembly (7) is elastically connected to the sixth connecting plate (33); The second fixing assembly (6) comprises a third motor (61), a first connecting rod (62), a third fixing plate (63), a second connecting rod (64), a fourth fixing plate (65), a fourth motor (66) and a third screw rod (67); One end of the body of the third motor (61) is fixedly mounted in the gap between the first track (34) and the second track (35); one end of the output shaft of the third motor (61) is drivingly connected to one end of the first connecting rod (62); The other end of the first connecting rod (62) is fixedly connected to one end of the third fixing plate (63), and the other end of the third fixing plate (63) is fixedly connected to one end of the second connecting rod (64); the other end of the second connecting rod (64) is transmission-connected to the fourth connecting plate (31); The fourth fixing plate (65) and the third fixing plate (63) are both provided with two groups of second threaded holes (68); the third screw rod (67) movably passes through the second threaded holes (68) and is threadedly connected to the second threaded holes (68); one end of the body of the fourth motor (66) is fixedly mounted on a side of the third fixing plate (63) away from the fourth fixing plate (65), and one end of the output shaft of the fourth motor (66) is drivingly connected to the third screw rod (67).

2. A tension detection device for a power cable according to claim 1, characterized in that: The first fixing assembly (5) comprises a first fixing plate (51), a second screw rod (54) and a second fixing plate (57); The second fixing plate (57) and the first fixing plate (51) have the same structure and are of equal size; two groups of first sliding grooves (52) are respectively provided at both ends of the first fixing plate (51), and the two groups of first sliding grooves (52) of the first fixing plates (51) are respectively movably connected to the second track (35) and the third track (36); two groups of first sliding grooves (52) are also respectively provided at both ends of the second fixing plate (57), and the two groups of first sliding grooves (52) of the second fixing plates (57) are respectively movably connected to the first track (34) and the third track (36).

3. A tension detection device for a power cable according to claim 2, characterized in that: A wire-through hole (53) is respectively provided at the center of the first fixing plate (51) and the second fixing plate (57), and the wire-through hole (53) passes through the first fixing plate (51) and the second fixing plate (57); Two groups of first threaded holes (56) are also respectively provided on the first fixing plate (51) and the second fixing plate (57); the second screw rod (54) movably passes through the first threaded holes (56) and is threadedly connected to the first threaded holes (56); A second motor (55) is also provided on a side of the second fixing plate (57) away from the first fixing plate (51); one end of a body of the second motor (55) is fixedly connected to the second fixing plate (57); and one end of an output shaft of the second motor (55) is drivingly connected to the second screw rod (54).

4. The tension detection device for a power cable according to claim 1, characterized in that: The third fixing assembly (7) comprises a first fixing ring (71), a connecting ring (72), a first spring (73) and a first clamping assembly (74); One end of the first spring (73) is elastically connected to the sixth connecting plate (33), and the other end of the first spring (73) is elastically connected to one end of the connecting ring (72); The other end of the connecting ring (72) is fixedly connected to the first fixing ring (71); a plurality of groups of first clamping holes (75) are provided on the first fixing ring (71) at equal intervals; the first clamping assembly (74) is movably clamped in the first clamping holes (75); and a second clamping assembly (76) is also provided in the first clamping assembly (74).

5. A tension detection device for a power cable according to claim 4, characterized in that: The first clamping assembly (74) comprises a first connecting body (741), four groups of third connecting rods (742) and a plurality of groups of second clamping blocks (743); One end of the four groups of third connecting rods (742) are respectively fixedly mounted on the lower end of the first connecting body (741), and a plurality of groups of second clamping blocks (743) are also arranged on the third connecting rod (742), the cross section of the second clamping block (743) is a right triangle, and the angle formed by the hypotenuse of the right triangle and the third connecting rod (742) is an acute angle.

6. A tension detection device for a power cable according to claim 5, characterized in that: The second clamping assembly (76) comprises a second connecting body (761), a fourth connecting rod (762) and a third clamping block (763); One end of the four groups of fourth connecting rods (762) is elastically connected to the lower end of the second connecting body (761), and the second connecting body (761) and the four groups of fourth connecting rods (762) form a spring sheet. A third clamping block (763) is also provided on the fourth connecting rod (762), and the third clamping block (763) passes through the third connecting rod (742).

7. A tension detection device for a power cable according to claim 5, characterized in that: First clamping grooves (711) are also provided on both side walls of the first clamping hole (75); A first clamping block (712) and a second spring (713) are also provided in the first clamping slot (711); one end of the first clamping block (712) is elastically connected to the bottom of the first clamping slot (711) via the second spring (713); the other end of the first clamping block (712) is clamped between two upper and lower groups of the second clamping blocks (743); the other end of the first clamping block (712) is an inclined surface, and is parallel to the inclined surface of the second clamping block (743).

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