Tension test assembly for new energy photovoltaic cable

Abstract

The utility model discloses a tension test assembly for a new energy photovoltaic cable, and belongs to the technical field of photovoltaic cable test equipment, the tension test assembly comprises a support base and two moving seats oppositely arranged on the support base, the support base is provided with a driving part used for driving the two moving seats to be far away from each other or close to each other, and the two moving seats are arranged on the support base. The tension test assembly for the new energy photovoltaic cable further comprises a cable fixing part which is in sliding connection with a sliding groove formed in the top of the movable seat. According to the utility model, through cooperative use of the transverse pipe, the inclined pipe, the elastic pressing block, the threaded pressing sleeve and other structures, the end fixing point of the photovoltaic cable and the stretching direction of the photovoltaic cable are not collinear, and the included angle between the end fixing point and the stretching direction is an obtuse angle, so that the influence of the extrusion force for fixing the end of the photovoltaic cable in the horizontal direction can be reduced; and moreover, the probability of breakage at the end of the photovoltaic cable in the tension test process can be reduced, and the reliability of tension test data of the photovoltaic cable is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of photovoltaic cable testing equipment, in particular to a tension testing component for new energy photovoltaic cables. Background Art

[0002] With the continuous advancement of science and technology, renewable energy is being developed more and more deeply, and solar energy is one of the renewable energy sources. Photovoltaic modules can convert light energy into electrical energy, and transmit it to the inverter through photovoltaic cables so that the converted electrical energy can be transmitted outward. Due to the relatively harsh operating environment of photovoltaic cables, their performance in all aspects must be better than that of ordinary cables. Therefore, photovoltaic cables need to be tested for various performances after production, among which tensile testing is one of the most important performance tests. When using the existing photovoltaic cable tensile test assembly, the horizontal clamping method is used to fix the two ends of the photovoltaic cable. This can easily cause uneven force at the ends of the photovoltaic cable, which can easily cause breakage at the ends, affecting the accuracy of the tensile test.

[0003] Existing patent application number: 202321564874.0 discloses a cable tension test assembly for cable processing. The device uses a second bidirectional threaded rod to drive two supporting rings and a semicircular pressure plate toward each other to clamp and fix the end of the cable. The first bidirectional threaded rod then drives the two second bidirectional screws away from each other to stretch the photovoltaic cable and complete the tension test. In the above-mentioned prior art, the device fixes the end of the photovoltaic cable by horizontal clamping. During the tension test, the above-mentioned technical problems still exist. Utility Model Content

[0004] The purpose of the present utility model is to provide a tensile testing assembly for new energy photovoltaic cables, so as to solve the problem that the horizontal clamping fixing method proposed in the above background technology easily causes uneven force at the end of the photovoltaic cable and easily causes breakage at the end.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] The utility model provides a tension test assembly for a new energy photovoltaic cable, comprising a support base and two movable seats arranged relative to the support base, wherein the support base is provided with a driving part for driving the two movable seats to move away from or towards each other, and the tension test assembly for a new energy photovoltaic cable further comprises:

[0007] A cable fixing part is slidably connected to a slide groove provided on the top of the movable seat, and the cable fixing part is used to clamp and fix the photovoltaic cable end.

[0008] The cable fixing portion includes:

[0009] A slider is slidably arranged in the sliding groove.

[0010] A support block is vertically fixed on the sliding block.

[0011] A transverse tube is fixedly inserted into the support block in a transverse direction.

[0012] An inclined tube is fixed obliquely to one end of the horizontal tube.

[0013] An elastic pressing block is sleeved with the through slot provided on the inclined tube, and one side of the elastic pressing block is fixed on the inner wall of the through slot.

[0014] A threaded pressing sleeve is threadedly sleeved on the oblique tube, and the threaded pressing sleeve is used to push the elastic pressing block into the oblique tube.

[0015] Furthermore, the cable fixing portion further includes a vertical bent pipe vertically fixed and inserted on the slider, and one end of the vertical bent pipe is fixed to one end of the oblique pipe.

[0016] Furthermore, the tension test assembly for the new energy photovoltaic cable also includes a pressure sensor fixed in the slide groove, and a pressure reader is fixed on the movable seat, and the pressure reader is used to read the data detected by the pressure sensor.

[0017] Furthermore, the pressure sensor is located between the slider and the pressure reader, and the two pressure readers are respectively located on opposite ends of the two moving seats.

[0018] Furthermore, the tensile testing assembly for new energy photovoltaic cables also includes a guide bar laterally fixed on the inner wall of the slide groove, and one side of the guide bar is slidably connected to a limit groove provided on the slider.

[0019] Furthermore, the axial direction of the guide bar is in the same direction as the axial direction of the transverse tube, and the guide bar is located on a vertical surface in the chute.

[0020] Furthermore, the support block is located between the two horizontal tubes, and the angle between the inclined tube and the vertical curved tube is less than or equal to the angle between the inclined tube and the horizontal tube.

[0021] Compared with the existing technology, one or more of the above technical solutions have the following beneficial effects:

[0022] 1. The utility model uses a combination of a horizontal tube, an inclined tube, an elastic pressure block, and a threaded compression sleeve to ensure that the end fixing point of the photovoltaic cable is not collinear with the tensile direction of the photovoltaic cable, and the angle between the two is obtuse. This can reduce the impact of the squeezing force of the photovoltaic cable end fixing in the horizontal direction, and can also reduce the probability of the photovoltaic cable breaking at the end during the tension test, thereby improving the reliability of the photovoltaic cable tension test data.

[0023] 2. The utility model inserts the photovoltaic cable from one end of the horizontal tube and passes through the horizontal tube and the inclined tube in sequence, and finally inserts it into the vertical bent tube, and then screws the threaded sleeve to push the elastic pressure block to tilt into the inclined tube and clamp the photovoltaic cable in the inclined tube, thereby improving the difficulty and efficiency of the photovoltaic cable end fixing operation, and arranging the pressure sensor between the two sliders so that the stretching direction of the photovoltaic cable is opposite to the force direction of the pressure sensor, which can accurately record the force data of the photovoltaic cable and improve the accuracy of tension data detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an axonometric drawing of the present utility model;

[0025] Figure 2 It is a cross-sectional view of the cable fixing portion of the present utility model;

[0026] Figure 3 It is a partial cross-sectional view of the movable seat in the utility model.

[0027] In the figure: 1. Support base; 2. Moving seat; 3. Driving part; 4. Cable fixing part; 41. Slider; 42. Support block; 43. Vertical elbow; 44. Oblique tube; 45. Horizontal tube; 46. Through groove; 47. Elastic pressure block; 48. Threaded sleeve; 5. Slide groove; 6. Pressure reader; 7. Pressure sensor; 8. Limiting groove; 9. Guide strip. DETAILED DESCRIPTION

[0028] In order to enable people skilled in the art to better understand the solution of the present application, the technical solution in the embodiment of the present application will be clearly and completely described below in conjunction with the drawings in the embodiment of the present application.

[0029] like Figures 1 to 3 As shown, a tensile test assembly for new energy photovoltaic cables includes a support base 1 and two movable seats 2 relatively arranged on the support base 1. The support base 1 is provided with a driving part 3 for driving the two movable seats 2 to move away from or approach each other. The driving part 3 includes a double-headed screw that is rotatably arranged on the top of the support base 1. The threaded sleeves at both ends of the double-headed screw are provided with nut seats. The nut seats are fixed to the bottom of the movable seat 2 and a servo motor is used to drive the double-headed screw to rotate. The tensile test assembly for new energy photovoltaic cables also includes:

[0030] The cable fixing part 4 is slidably connected to the slide groove 5 provided on the top of the movable seat 2, and the cable fixing part 4 is used to clamp and fix the photovoltaic cable end.

[0031] The cable fixing portion 4 includes:

[0032] The slider 41 is slidably arranged in the sliding groove 5 .

[0033] A support block 42 is vertically fixed on the slider 41 .

[0034] A transverse tube 45 is fixedly inserted into the support block 42 in a transverse direction.

[0035] The inclined tube 44 is fixed obliquely to one end of the horizontal tube 45 .

[0036] The elastic pressing block 47 is sleeved with the through groove 46 provided on the inclined tube 44 , and one side of the elastic pressing block 47 is fixed on the inner wall of the through groove 46 , and the top of the elastic pressing block 47 is an inclined surface.

[0037] The threaded pressing sleeve 48 is threadedly sleeved on the inclined tube 44 , and the threaded pressing sleeve 48 is used to push the elastic pressing block 47 into the inclined tube 44 .

[0038] Before the tension test of the photovoltaic cable, one end of the photovoltaic cable is first passed from the side of the support block 42 away from the cross tube 45 to the inside of the cross tube 45, and then inserted into the inside of the inclined tube 44, and then the threaded pressing sleeve 48 is twisted to make it close to the elastic pressing block 47 until it contacts the inclined surface at the top of the elastic pressing block 47. As the threaded pressing sleeve 48 is continuously twisted, the connection between the elastic pressing block 47 and the through groove 46 is elastically bent, pushing the free end of the elastic pressing block 47 into the inclined tube 44, so that the end of the photovoltaic cable is firmly pressed between the inner wall of the inclined tube 44 and the elastic pressing block 47, completing the fixing of the photovoltaic cable end. By repeating the above operation process, the other end of the photovoltaic cable can be fixed in another cable fixing part 4, and then by controlling the driving part 3, the two movable seats 2 are driven away from each other and the photovoltaic cable is tightened. As the driving part 3 continues to operate, the pulling force of the photovoltaic cable is increased until the photovoltaic cable is broken, and the tensile strength limit of the photovoltaic cable can be measured. In this process, the design of the inclined tube 44 being inclined to the horizontal tube 45 is reduced. The probability of the fracture being located at the end of the photovoltaic cable during the tensile test is reduced, and the influence of the pressure of the fixing of the photovoltaic cable end on the accuracy of the photovoltaic cable tensile test is reduced.

[0039] In this embodiment, the cable fixing part 4 also includes a vertical bend pipe 43 fixed vertically and inserted on the slider 41, and one end of the vertical bend pipe 43 is fixed to one end of the inclined pipe 44. The setting of the vertical bend pipe 43 is used to form a closed loop between the horizontal pipe 45, the inclined pipe 44, the vertical bend pipe 43, the slider 41 and the support block 42, thereby increasing the overall structural strength of the cable fixing part 4 and avoiding deformation during the photovoltaic cable tensile test, which affects the accuracy of the tensile test.

[0040] In this embodiment, the tensile testing assembly for new energy photovoltaic cables also includes a pressure sensor 7 fixed in the slide groove 5, and a pressure reader 6 is fixed on the movable seat 2, and the pressure reader 6 is used to read the data detected by the pressure sensor.

[0041] The pressure sensor 7 is located between the slider 41 and the pressure reader 6 , and the two pressure readers 6 are respectively located on the opposite ends of the two moving seats 2 .

[0042] With such a design, the pulling force applied to the photovoltaic cable by the driving part 3 can be converted into the pressure of the lateral squeezing pressure sensor 7 through the principle that the action of forces is mutual, and the pulling force can be transmitted to the pressure reader 6 in real time for display and recording, so that after the test, it is convenient for the inspection personnel to analyze the relevant data changes.

[0043] In this embodiment, the tensile testing assembly for the new energy photovoltaic cable further includes a guide bar 9 transversely fixed on the inner wall of the slide groove 5 , and one side of the guide bar 9 is slidably connected to the limiting groove 8 provided on the slider 41 .

[0044] The axial direction of the guide bar 9 is in the same direction as the axial direction of the transverse tube 45 , and the guide bar 9 is located on a vertical surface in the chute 5 .

[0045] This design is to constrain the vertical freedom of the slider 41 so that it can only slide in the axial straight line along the guide bar 9 in the slide groove 5. During the photovoltaic cable tension test, the tension exerted on the photovoltaic cable can be fully converted into pressure, and the pressure reader 6 can display and record it, which is convenient for subsequent data analysis and reduces data errors.

[0046] In this embodiment, the support block 42 is located between the two horizontal tubes 45, and the angle between the inclined tube 44 and the vertical bend tube 43 is less than or equal to the angle between the inclined tube 44 and the horizontal tube 45. Such a design can reduce the influence of the extrusion force of the fixed end of the photovoltaic cable in the horizontal direction, and can also reduce the probability of the photovoltaic cable breaking at the end during the tensile test, thereby improving the reliability of the photovoltaic cable tensile test data.

[0047] Working principle: Before the tension test of the photovoltaic cable, one end of the photovoltaic cable is passed from the side of the support block 42 away from the cross tube 45 to the inside of the cross tube 45, and then inserted into the inside of the inclined tube 44, and then the threaded pressing sleeve 48 is twisted to make it close to the elastic pressing block 47 until it contacts the inclined surface of the top of the elastic pressing block 47. As the threaded pressing sleeve 48 is continuously twisted, the connection between the elastic pressing block 47 and the through groove 46 is elastically bent, pushing the free end of the elastic pressing block 47 into the inclined tube 44, so that the end of the photovoltaic cable is firmly contacted between the inner wall of the inclined tube 44 and the elastic pressing block 47, completing the operation of fixing the end of the photovoltaic cable. Repeat the above operation process to fix the photovoltaic cable. The other end of the photovoltaic cable is fixed in another cable fixing part 4, and then the driving part 3 is controlled to drive the two movable seats 2 away from each other and tighten the photovoltaic cable. As the driving part 3 continues to operate, the pulling force of the photovoltaic cable is increased until the photovoltaic cable is broken. During this process, the slider 41 continuously contacts the pressure sensor 7 and the pressure sensor 7 converts the pressure received into an electrical signal and transmits it to the pressure reader 6, so that the pressure received by the pressure sensor 7 can be read and recorded in real time. Since the force effect is mutual, the pressure detected on the pressure sensor 7 is the tension received by the photovoltaic cable, so as to accurately detect the upper limit of the tensile strength of the photovoltaic cable.

[0048] The above description is merely a preferred embodiment of the present invention. Any portion not described in the present invention can be implemented by adopting or drawing upon existing technologies. Of course, the above description is not intended to limit the present invention, nor is the present invention limited to the above examples. Any changes, modifications, additions, or substitutions made by those skilled in the art within the spirit and scope of the present invention shall also fall within the scope of protection of the present invention.

Claims

1. A tensile test assembly for a new energy photovoltaic cable, comprising a support base (1) and two movable seats (2) arranged relative to the support base (1), wherein the support base (1) is provided with a driving portion (3) for driving the two movable seats (2) to move away from or towards each other, characterized in that: The tensile test assembly for the new energy photovoltaic cable also includes: a cable fixing portion (4) slidably connected to a slide groove (5) provided on the top of the movable seat (2), the cable fixing portion (4) being used for clamping and fixing a photovoltaic cable end; The cable fixing portion (4) comprises: a slider (41) slidably arranged in the slide groove (5); a support block (42) vertically fixed on the slider (41); A transverse tube (45) fixedly inserted into the support block (42) in a transverse direction; an inclined tube (44) fixed obliquely to one end of the horizontal tube (45); an elastic pressing block (47) sleeved with a through groove (46) provided on the inclined tube (44), one side of the elastic pressing block (47) being fixed to the inner wall of the through groove (46); A threaded pressing sleeve (48) is threadedly sleeved on the inclined tube (44), and the threaded pressing sleeve (48) is used to push the elastic pressing block (47) into the inclined tube (44).

2. The tensile testing assembly for new energy photovoltaic cables according to claim 1, characterized in that: The cable fixing portion (4) further comprises a vertical curved pipe (43) fixedly inserted vertically on the slider (41), and one end of the vertical curved pipe (43) is fixed to one end of the inclined pipe (44).

3. The tensile testing assembly for new energy photovoltaic cables according to claim 2, characterized in that: The tensile testing assembly for the new energy photovoltaic cable further comprises a pressure sensor (7) fixed in the slide groove (5); a pressure reader (6) is fixed on the movable seat (2); and the pressure reader (6) is used to read data detected by the pressure sensor.

4. The tensile testing assembly for new energy photovoltaic cables according to claim 3, characterized in that: The pressure sensor (7) is located between the slider (41) and the pressure reader (6), and the two pressure readers (6) are respectively located on the opposite ends of the two moving seats (2).

5. The tensile testing assembly for new energy photovoltaic cables according to claim 1, characterized in that: The tensile testing assembly for new energy photovoltaic cables further comprises a guide bar (9) transversely fixed on the inner wall of the slide groove (5), and one side of the guide bar (9) is slidably connected to a limiting groove (8) provided on the slider (41).

6. The tensile testing assembly for new energy photovoltaic cables according to claim 5, characterized in that: The axial direction of the guide strip (9) is in the same direction as the axial direction of the transverse tube (45), and the guide strip (9) is located on a vertical surface in the chute (5).

7. The tensile testing assembly for new energy photovoltaic cables according to claim 2, characterized in that: The support block (42) is located between the two transverse tubes (45), and the angle between the inclined tube (44) and the vertical curved tube (43) is less than or equal to the angle between the inclined tube (44) and the transverse tube (45).

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