Flexible cable tension test clamping device

Abstract

The utility model provides a flexible cable tension test clamping device, which belongs to the technical field of wire and cable detection and comprises a tension tester, an upper clamping component and a lower clamping component, the upper clamping component is connected with a force value sensor of the tension tester, the lower clamping component is mounted on a base of the tension tester, and the tension tester is connected with the upper clamping component. The upper / lower clamping part comprises a fixed plate; the tensioning wheel set is fixedly installed on the fixing plate, and the tensioning wheel set comprises a first tensioning wheel, a second tensioning wheel and a third tensioning wheel which are arranged in an L shape; the tensioning wheel set of the lower clamping component and the tensioning wheel set of the upper clamping component are arranged in a central symmetry mode. According to the utility model, the flexible cable can be uniformly clamped, the dispersion force value can be adjusted, the device can better adapt to the shape and the deformation of the flexible cable, a more stable clamping effect is provided, and the accuracy and the reliability of a test are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of wire and cable detection, and specifically relates to a soft cable tension test clamping device. BACKGROUND

[0002] In the production and use process of the cable, the cable needs to be subjected to tension test to detect its carrying capacity. The existing tension test device usually adopts the mode of clamping both ends of the cable to perform the stretching test, for example, the Chinese invention application with the publication number CN113125264A discloses a soft cable breaking force testing device, which comprises upper and lower clamps arranged face to face, the distance between the upper and lower clamps is adjustable, the upper and lower clamps are respectively fixedly installed with two ends of the soft cable to be tested for breaking force, the soft cable to be tested for breaking force is vertically placed between the upper and lower clamps, the upper and lower clamps are connected with a driving mechanism, the upper and lower clamps are driven to move towards or away from each other by the driving mechanism, so that the soft cable to be tested for breaking force is broken and subjected to breaking force analysis.

[0003] However, for the soft cable, due to its softness and deformability, the clamping device in the scheme is often difficult to effectively fix the soft cable, which easily leads to inaccurate test results. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the defects of the prior art and provides a soft cable tension test clamping device, which can effectively fix the soft cable to improve the accuracy of the tension test results.

[0005] In order to achieve the above and other purposes, the utility model is realized by the following technical scheme: the utility model provides a soft cable tension test clamping device, which comprises a tension testing machine, an upper clamping part and a lower clamping part, the upper clamping part is connected with a force value sensor of the tension testing machine, the lower clamping part is installed on the base of the tension testing machine, the upper / lower clamping part comprises a fixed plate; a tensioning wheel set is fixedly installed on the fixed plate, the tensioning wheel set comprises a first tensioning wheel, a second tensioning wheel and a third tensioning wheel arranged in an L shape; wherein the tensioning wheel set of the lower clamping part is arranged in a central symmetry with the tensioning wheel set of the upper clamping part.

[0006] In an embodiment, the center line of the first tensioning wheel and the second tensioning wheel is perpendicular to the base, and the center line of the first tensioning wheel and the third tensioning wheel is parallel to the base.

[0007] In an embodiment, the distance between the first tensioning wheel and the second tensioning wheel is equal to the distance between the first tensioning wheel and the third tensioning wheel.

[0008] In an embodiment, the first, second and third tensioning wheels have a diameter greater than a bending radius of the flexible cable.

[0009] In an embodiment, the upper / lower clamping component further comprises a connecting piece, one end of the connecting piece being connected with the upper / lower clamping component, and the other end of the connecting piece being connected with the tensile testing machine.

[0010] In an embodiment, the upper / lower clamping component further comprises a centering adjusting piece, one end of the centering adjusting piece being connected with the fixed plate, and the other end of the centering adjusting piece being connected with the connecting piece.

[0011] In an embodiment, the centering adjusting piece and the connecting piece are connected through a locking nut.

[0012] In an embodiment, the upper / lower clamping component further comprises an end fixing piece, the end fixing piece being arranged on the fixed plate.

[0013] In an embodiment, the center of the end fixing piece, the centers of the first, second and third tensioning wheels form a square.

[0014] In an embodiment, the tensile testing machine has a precision grade of at least 1 and a range of not less than 30kN.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] 1. The tensioning wheel set is arranged in an L shape, and the tensioning wheel set of the lower clamping component is arranged in a center symmetry with the tensioning wheel set of the upper clamping component, the uniform clamping and the dispersed force value adjusting of the flexible cable are realized through the three tensioning wheels of the upper and lower clamping components, the shape and deformation of the flexible cable can be better adapted, more stable clamping effect is provided, the problems of uneven clamping force and easy damage of the cable of the traditional clamping device are avoided, and the accuracy, safety and repeatability of the test are improved.

[0017] 2. The diameter of the tensioning wheel is greater than the bending radius of the flexible cable, the design can provide sufficient tension when clamping the flexible cable, and the flexible cable is prevented from being damaged due to excessive bending.

[0018] 3. The connecting piece can ensure stable and reliable transmission of force during the test, and the locking nut is used for fixing and adjusting the position of the connecting piece to ensure the firmness of the connection.

[0019] 4. The centering adjusting piece can be flexibly adjusted according to the diameter of the flexible cable to make the flexible cable always be in the center position of the device during the test, and the inaccuracy of the test result caused by eccentricity is avoided.

[0020] 5, The end fixing piece of the utility model is responsible for firmly fixing the end of the cable, ensures that the cable will not slip or loosen under the action of tension, thereby ensuring the smooth progress of the test. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 The structure schematic diagram of the soft cable tension test clamping device of the utility model is shown.

[0022] Figure 2 The structure schematic diagram of the upper clamping component and the lower clamping component and the soft cable winding installation in the utility model is shown. DETAILED DESCRIPTION

[0023] Please refer to Figure 1 And Figure 2 The embodiments of the utility model are described below through specific specific examples, and other advantages and effects of the utility model can be easily understood by those skilled in the art from the content disclosed in the specification.

[0024] It should be understood that the structure, proportion, size and the like shown in the drawings attached to the specification are only used to cooperate with the content disclosed in the specification for understanding and reading by those skilled in the art, and do not define the limiting conditions for the implementation of the utility model, so they do not have technical substantive significance, any modification of structure, change of proportion relationship or adjustment of size, without affecting the effects and purposes that can be produced and achieved by the utility model, should still fall within the scope of the technical content disclosed by the utility model.

[0025] Unless otherwise defined, the technical terms or scientific terms used herein should be understood as the usual meaning understood by those skilled in the art to which the utility model belongs. The similar words such as "one", "a" or "the" used in the utility model also do not represent the quantity limitation, but only represent the existence of at least one. The words such as "include" or "contain" mean that the elements or objects before the words cover the elements or objects listed after the words and their equivalents, without excluding other elements or objects.

[0026] In order to avoid confusion with the utility model, some technical features known in the art are not described.

[0027] As Figure 1As shown, the embodiment provides a soft cable tension test clamping device 100, which comprises a tension testing machine 110, an upper clamping part 120 and a lower clamping part 130. The tension testing machine 110 is the main equipment for providing tension, and its performance directly affects the test results. The tension testing machine 110 comprises a force value sensor 111 and a base 112 parallel to the force value sensor 111. The upper clamping part 120 is fixedly connected with the force value sensor 111, and is used for clamping the upper end of the soft cable 200 to be tested; the lower clamping part 130 is fixedly installed on the base 112, and is used for clamping the lower end of the soft cable 200 to be tested, and cooperates with the upper clamping part 120 to complete the clamping of the soft cable 200 to be tested.

[0028] As shown in the drawings, Figure 2 The upper clamping part 120 comprises a fixed plate 121, a connecting piece 122, a centering adjusting piece 123, a locking nut 124 and a tensioning wheel set 125. One end of the fixed plate 121 is connected with one end of the connecting piece 122 through the centering adjusting piece 123 and the locking nut 124, and the other end of the connecting piece 122 is used for connecting the force value sensor 111 of the tension testing machine 110, so as to ensure stable and reliable transmission of force; the centering adjusting piece 123 can adjust the connection position of the connecting piece 122 and the fixed plate 121 according to the diameter of the soft cable 200, and through the adjustment, it is ensured that the soft cable 200 sample installed is in the center position of the force value sensor 111, so as to ensure the accuracy of the test. The locking nut 124 is used for strengthening the connection of the parts, so as to ensure that the upper clamping part 120 will not be loose during the test. The tensioning wheel set 125 is fixedly installed on the fixed plate 121, and is used for uniformly clamping the soft cable 200 to be tested.

[0029] The tensioning wheel set 125 comprises a first tensioning wheel 125a, a second tensioning wheel 125b and a third tensioning wheel 125c arranged in an L shape. Specifically, the center line of the first tensioning wheel 125a and the second tensioning wheel 125b is perpendicular to the base 112, the center line of the first tensioning wheel 125a and the third tensioning wheel 125c is parallel to the base 112, and the diameters of the first tensioning wheel 125a, the second tensioning wheel 125b and the third tensioning wheel 125c are greater than the bending radius of the soft cable 200 to be tested.

[0030] As shown in Figure 2, the first tensioning wheel 125a is fixedly installed at the lower right corner of the fixed plate 121, the second tensioning wheel 125b is arranged directly above the first tensioning wheel 125a, the third tensioning wheel 125c is arranged directly left of the first tensioning wheel 125a, and the spacing between the first tensioning wheel 125a and the second tensioning wheel 125b is equal to the spacing between the first tensioning wheel 125a and the third tensioning wheel 125c, so as to achieve uniform clamping and adjustment of the dispersion force value of the soft cable 200 to be tested.

[0031] The upper clamping component 120 further comprises an end head fixing member 126 arranged on the fixed plate 121 and used for fixing the end of the soft cable 200 to be tested, so as to ensure the stability of the sample during the test. Specifically, the end head fixing member 126 is arranged directly left of the second tensioning wheel 125b and directly above the third tensioning wheel 125c.

[0032] It should be noted that the first tensioning wheel 125a can also be installed at the lower left corner of the fixed plate 121, and at this time, the third tensioning wheel 125c is arranged directly right of the first tensioning wheel 125a, and the end head fixing member 126 is arranged directly right of the second tensioning wheel 125b and directly above the third tensioning wheel 125c.

[0033] The lower clamping component 130 has the same structure design as the upper clamping component 120, and only the difference in installation direction exists, that is, the lower clamping component 130 is installed upside down on the base 112, so that the first tensioning wheel 135a is located at the upper left corner of the fixed plate 131, the second tensioning wheel 135b is located directly below the first tensioning wheel 135a, the third tensioning wheel 135c is located directly right of the first tensioning wheel 135a, and the end head fixing member 136 is located directly right of the second tensioning wheel 135b and directly below the third tensioning wheel 135c. This central symmetric design helps to keep the balance and stability during the test.

[0034] The process of using the soft cable tension test clamping device 100 provided by the utility model to perform soft cable tension test is as follows:

[0035] The soft cable 200 to be tested is wound clockwise 2 turns on the first tensioning wheel 125a of the upper clamping component 120 upwards, then wound counterclockwise 2 turns on the second tensioning wheel 125b of the upper clamping component 120, then extends clockwise across the first tensioning wheel 125a to the third tensioning wheel 125c, is wound clockwise 2 turns on the third tensioning wheel 125c, and finally is fixed in the end fixing piece 126; similarly, the other end of the soft cable 200 to be tested is wound clockwise 2 turns on the first tensioning wheel 135a of the lower clamping component 130 downwards through the center position, extends to the second tensioning wheel 135b, is wound counterclockwise 2 turns and then extends clockwise across the first tensioning wheel 135a to the third tensioning wheel 135c, is wound clockwise 2 turns on the third tensioning wheel 135c, and finally is fixed in the end fixing piece 136; the positions of the centering adjusting piece 123 on the upper clamping component 120 and the centering adjusting piece 133 on the lower clamping component 130 are adjusted respectively, so that the installed soft cable 200 to be tested is located at the center position of the soft cable tension test clamping device 100; finally, the tension testing machine 100 is started, and the applied force value must be smoothly loaded, the speed is uniform, and there is no impact.

[0036] In summary, the utility model discloses the arrangement design to the tensioning wheel group on the basis of prior art, and the uniform clamping and the dispersed force value of adjusting of soft cable are realized through multiple tensioning wheels, can better adapt to the shape and deformation of soft cable, provide more stable clamping effect, avoid the uneven clamping force of traditional clamping device, and the problem that cable is easily damaged etc., improve the accuracy, safety and repeatability of test. Meanwhile, the device simple structure, convenient operation.

[0037] Therefore, the utility model effectively overcomes various shortcomings in the prior art and has high industrial utilization value. The above examples only exemplarily illustrate the principle and effect of the utility model, and are not used to limit the utility model. Any person skilled in the art can modify or change the above examples without departing from the spirit and scope of the utility model. Therefore, all equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should be covered by the claims of the utility model.

Claims

1. A soft cable tension test clamping device comprising a tension testing machine, an upper clamping member, and a lower clamping member, the upper clamping member being connected to a force value sensor of the tension testing machine, the lower clamping member being installed on a base of the tension testing machine, characterized in that, The upper / lower clamping components comprise a fixed plate; a tensioning wheel set fixedly installed on the fixed plate, the tensioning wheel set comprising a first tensioning wheel, a second tensioning wheel and a third tensioning wheel arranged in an L shape; wherein the tensioning wheel set of the lower clamping component is arranged in a central symmetry with the tensioning wheel set of the upper clamping component.

2. The soft cable tension test clamping device according to claim 1, characterized in that, The center line of the first tensioning wheel and the second tensioning wheel is perpendicular to the base, and the center line of the first tensioning wheel and the third tensioning wheel is parallel to the base.

3. The soft cable tension test clamping device of claim 2, wherein, The distance between the first tensioning wheel and the second tensioning wheel is equal to the distance between the first tensioning wheel and the third tensioning wheel.

4. The soft cable tension test clamping device of claim 1, wherein, The diameters of the first tensioning wheel, the second tensioning wheel and the third tensioning wheel are greater than the bending radius of the flexible cable.

5. The soft cable tension test clamping device of claim 1, wherein, The upper / lower clamping components further comprise a connecting piece, one end of the connecting piece being connected with the fixed plate, and the other end of the connecting piece being connected with the tensile testing machine.

6. The soft cable tension test clamping device of claim 5, wherein, The fixed plate and the connecting piece are connected through a locking nut.

7. The soft cable tension test clamping device of claim 5, wherein, The upper / lower clamping components further comprise a centering adjusting piece, one end of the centering adjusting piece being connected with the fixed plate, and the other end of the centering adjusting piece being connected with the connecting piece.

8. The soft cable tension test clamping device of claim 1, wherein, The upper / lower clamping components further comprise an end head fixing piece, the end head fixing piece being arranged on the fixed plate.

9. The soft cable tension test clamping device of claim 8, wherein, The center of the end head fixing piece, the center line of the first tensioning wheel, the second tensioning wheel and the third tensioning wheel form a square.

10. The soft cable tension test clamping device of claim 1, wherein, The tensile testing machine has an accuracy level of at least 1 level, and a range of not less than 30 kN.

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