Cable tensile strength detection tool

Abstract

The utility model relates to a cable tensile strength detection tool which comprises a workbench capable of carrying out station adjustment according to requirements, and a housing capable of defining an installation space of an equivalent tensile driving assembly is arranged on the workbench. A plurality of equivalent stretching transmission assemblies which are in transmission connection with the same equivalent stretching driving assembly are embedded in the top surface of the housing in a manner of rotating symmetrically around the center of the top surface of the housing; the moving end, located above the housing, of the equivalent stretching transmission assembly is further connected with a stretching limiting assembly capable of stretching a to-be-tested cable body, and at least one stretching limiting assembly is provided with a cable body clamping assembly capable of fixing the cable end. According to the utility model, the stability of tensile deformation of the cable can be ensured through multi-point equivalent traction, and meanwhile, accurate regulation and control of tensile strength can be realized through a constant-force driving mode, so that the detection accuracy is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable strength detection equipment technical field especially relates to a cable tensile strength detection frock. BACKGROUND

[0002] Cable is the general term of optical cable, cable and other articles, the use of cable has many, mainly used for control installation, connecting equipment, conveying power and multiple roles, is a commonly used transmission power, information and realizes electromagnetic energy conversion wire product, along with the market demand changes and development, the related industry to the cable performance requirement is also higher and higher, in order to ensure that the cable has more optimal operating performance and life, not only requires that the cable has excellent insulating properties, but also needs to consider the tensile resistance of cable and other physical properties, therefore, need through tensile resistance detection equipment etc. Multiple detection, so as to ensure the quality of the cable produced.

[0003] The traditional cable tensile test is manually cut and marked according to the needs of the wire and cable to be tested, and then the cable is pulled and tested by manual operation. The pulling force provided by the human pulling cannot guarantee the consistency of the tensile strength, the size of the force is easy to fluctuate, resulting in poor detection accuracy, and the labor cost is high. In addition, the existing tensile test equipment cannot perform multi-point equivalent pulling on the cable to be tested, resulting in inaccurate control of the tensile strength of the cable during the tensile test and inaccurate detection data. UTILITY MODEL CONTENT

[0004] The utility model aims at providing a cable tensile strength detection frock which can ensure the stability of the cable tensile deformation through multi-point equivalent pulling and realize accurate control of the tensile strength through constant force driving to ensure the detection accuracy, so as to solve the defects of poor pulling force stability and inconsistent tensile strength during manual pulling test, poor detection accuracy, and the existing tensile test equipment cannot perform multi-point equivalent pulling on the cable to be tested, resulting in inaccurate control of the tensile strength of the cable during the tensile test and low detection accuracy. In addition, the existing tensile test equipment cannot perform multiple tensile strength detection on the cable.

[0005] The utility model discloses a technical scheme is as follows: a kind of cable tensile strength detection tool, including worktable that can be adjusted according to the requirement station, the mounting space of the cover that can limit equivalent tensile drive assembly is provided on the worktable, and the top surface of the cover is embedded with multiple equivalent tensile transmission assemblies with the same equivalent tensile drive assembly transmission connection in the way of rotating symmetry around its top surface center;The movement end of the equivalent tensile transmission assembly above the cover is further connected with the tensile limiting component that can stretch the cable body to be measured, and the cable body clamping component that can fix cable end is provided on at least one tensile limiting component.

[0006] According to a preferred embodiment, the equivalent tensile transmission assembly includes through guide grooves, guide sliding rods, transmission sliding blocks, rotating connection columns and mounting plate seats, wherein multiple through guide grooves are annularly and interval embedded on the top surface of the cover in a rotating symmetry manner, guide sliding rods parallel to the length direction are inserted into the through guide grooves, and the transmission sliding blocks capable of reciprocating translation along the rod body axis are slidably sleeved on the guide sliding rods; the rotating connection columns and the mounting plate seats are respectively connected on the bottom surface and the top surface of the through guide groove where the transmission sliding block extends out.

[0007] According to a preferred embodiment, the equivalent tensile drive assembly includes a stepping motor mounted on the workbench, an equivalent deflection multi-angle plate sleeved on the rotating shaft of the stepping motor, and a transmission connecting rod rotatably connected to the edge corner of the equivalent deflection multi-angle plate.

[0008] According to a preferred embodiment, the inclined vertical plate of the tensile limiting component is supported on the mounting plate seat in a manner coplanar with the guide sliding rod, a stepped notch for placing the cable is further formed in the side edge of the inclined vertical plate, and a protective column is provided on the plate body side edge forming the stepped notch.

[0009] According to a preferred embodiment, a scale bar parallel to the guide sliding rod is embedded on the groove top wall of the through guide groove.

[0010] According to a preferred embodiment, the side surface of the transmission sliding block close to the mounting plate seat is provided with a scale indicating bar capable of being perpendicular to the scale bar.

[0011] According to a preferred embodiment, the end of the transmission connecting rod away from the equivalent deflection multi-angle plate is deflectably sleeved on the rotating connection column.

[0012] According to a preferred embodiment, the cable clamping assembly comprises a limiting bottom plate installed on two opposite plate surfaces of the inclined vertical plate in a staggered manner and a limiting clamping plate detachably connected with the limiting bottom plate through connecting bolts, wherein a first U-shaped arc groove and a second U-shaped arc groove capable of defining the clamping position of the cable are arranged on the limiting bottom plate and the limiting clamping plate in a positionally corresponding manner.

[0013] The utility model discloses the beneficial effects are:

[0014] The equivalent stretching driving assembly provided by the application can simultaneously drive four equivalent stretching transmission assemblies in different directions to perform translation with equal distance and equal thrust, so that the equivalent stretching transmission assemblies and the stretching limiting assembly in four different directions have equal pulling strength, multi-point equivalent pulling of the cable is realized, and segmented equivalent synchronous testing of the cable is realized, thereby effectively avoiding data singleness of single-point pulling at a time and improving sufficiency and reliability of test data. The equivalent stretching driving assembly provided by the application can force the equivalent stretching transmission assembly to provide constant pulling force according to preset parameters, so as to ensure accurate control and stability of the pulling force of the stretching test, and consistent stretching strength can be controllably provided in the multiple testing process, thereby improving accuracy and precision of detection. The stepping motor provided by the application can drive the four transmission sliding blocks to perform equivalent translation in different directions through the equivalent deflection multi-angle plate and the transmission connecting rod, so that the stretching limiting assembly connected with the four transmission sliding blocks can perform multi-point equivalent pulling on the circular cable to be tested defined by the cable clamping assembly, thereby improving the effect of pulling test and more accurately and stably testing the tensile property data of the cable. The through guide groove and the guide sliding rod can cooperatively limit and guide the transmission sliding block, so that the transmission sliding block can stably translate under the push-pull of the transmission connecting rod, and the stretching limiting assembly can be conveniently and stably installed on the mounting plate seat, so that the two form an integrated translation structure, and the cable is pulled with high precision and stability, thereby ensuring stability and controllability of the cable in the stretching process. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a preferred cable tensile strength detection tool structure schematic view provided by the utility model;

[0016] Figure 2 is a preferred cable tensile strength detection tool structure schematic view provided by the utility model;

[0017] Figure 3 is a preferred cable tensile strength detection tool structure schematic view provided by the utility model;

[0018] Figure 4It is the cable body clamping assembly's plane schematic drawing of the cable tensile strength detection tooling that the utility model provides optimizes.

[0019] List of reference signs

[0020] 1: workbench;2: equivalent tensile drive assembly;3: cover shell;4: equivalent tensile transmission assembly;5: tensile limiting assembly;6: cable body clamping assembly;11: table body;12: lifting column;13: bottom plate;14: universal locking wheel;21: stepper motor;22: equivalent deflection polygon;23: transmission connecting rod;41: through guide groove;42: guide slide;43: transmission slide;44: rotary connecting column;45: mounting plate seat;411: scale bar;431: scale indicating bar;51: inclined vertical plate;52: protection column;511: stepped notch;521: wear-resistant scratch-resistant film layer;61: limiting bottom plate;62: limiting clamping plate;63: connecting bolt;611: first U-shaped arc groove;621: second U-shaped arc groove. DETAILED DESCRIPTION

[0021] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or prior art, the utility model will be briefly introduced in combination with the drawings and the description of the embodiments or prior art, and obviously, the following description of the structure of the drawings is only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor under the premise of the drawings.

[0022] The serial numbers of components in this paper, such as "first", "second", etc., are only used to distinguish the described objects, and have no any order or technical meaning. And the "connection" and "coupling" in the present application include direct and indirect connection (coupling) under reasonable circumstances (without self-contradiction).

[0023] The following will be described in detail in combination with the drawings.

[0024] Embodiment 1

[0025] The present application provides a kind of cable tensile strength detection tooling, it includes workbench 1, equivalent tensile drive assembly 2, cover shell 3, equivalent tensile transmission assembly 4, tensile limiting assembly 5 and cable body clamping assembly 6.

[0026] According to Figures 1-4In the shown specific embodiment, the workbench 1 comprises a mounting plane capable of being adjusted to different positions to form different heights according to requirements. A cover 3 capable of defining a mounting space of the equivalent tensile driving assembly 2 is arranged on the workbench 1. A plurality of equivalent tensile transmission assemblies 4 drivingly connected with the same equivalent tensile driving assembly 2 are embedded on the top surface of the cover 3 in a rotationally symmetrical manner around the center of the top surface, so that the plurality of equivalent tensile transmission assemblies 4 can be translated by an equivalent amount under the driving of the equivalent tensile driving assembly 2. The moving end of the equivalent tensile transmission assembly 4 above the cover 3 is further connected with a tensile limiting assembly 5 capable of stretching the cable to be tested. A cable clamping assembly 6 capable of fixing the cable end is arranged on at least one tensile limiting assembly 5. The equivalent tensile driving assembly 2 provided in the application can simultaneously and equivalently drive the equivalent tensile transmission assemblies 4 in four different directions to translate by an equivalent distance and with an equivalent thrust, so that the equivalent tensile transmission assemblies 4 and the tensile limiting assemblies 5 in the four different directions have the same pulling strength, to realize equivalent pulling of the cable at multiple points, equivalent synchronization testing of the cable segments, effectively avoid the data singleness of single-point pulling at a time, and improve the sufficiency and reliability of the test data. The equivalent tensile driving assembly 2 provided in the application can force the equivalent tensile transmission assemblies 4 to provide a constant pulling force according to preset parameters, to ensure accurate control and stability of the pulling force of the tensile test, and to controllably provide consistent tensile strength in multiple tests, thereby improving the accuracy and precision of the detection.

[0027] Preferably, the table body 11 of the workbench 1 is supported on the bottom plate 13 through the lifting column 12. Further preferably, a plurality of universal locking wheels 14 are arranged on the lower plate surface of the bottom plate 13. Specifically, the lifting column 12 is a high-precision hydraulic support column with a model of CTPC-120, which can change the height of the table body 11 according to requirements, so as to position the mounting plane at different heights, facilitating the cable tensile test by operators of different heights. Specifically, the universal locking wheel 14 is a universal support roller with a locking function, which can drive the table body 11 to move, thereby facilitating the cable tensile test at different positions.

[0028] Preferably, the equivalent tensile driving assembly 2 comprises a stepping motor 21 mounted on the workbench 1, an equivalent deflection polygon 22 sleeved on the rotating shaft of the stepping motor 21, and a transmission connecting rod 23 rotatably connected to the corner of the equivalent deflection polygon 22. Further preferably, the end of the transmission connecting rod 23 away from the equivalent deflection polygon 22 is deflectably sleeved on the rotating connecting column 44. Specifically, when the stepping motor 21 deflects, it can drive the equivalent deflection polygon 22 to deflect by the same amount, thereby synchronously driving the four transmission connecting rods 23 connected to the four extended corner pieces of the equivalent deflection polygon 22 to move in different directions, and then the four transmission connecting rods 23 can synchronously and equivalently drive the four transmission sliders 43 connected to the four rotating connecting columns 44 to move by the same amount in different directions, to achieve equivalent pulling at multiple points. Specifically, the stepping motor 21 provided in the present application is a CTTK2D1MS type servo motor. The reason for using a servo motor is that the servo motor can output a constant torque according to the demand, so that when the torque generated by the servo motor during deflection reaches a preset threshold, the motor automatically switches to a constant pressure clamping state under the control of the electronic control chip. Further preferably, in order to ensure the accuracy of state switching and reduce the error of switching feedback, the state switching feedback of the present application further comprises a thrust sensing unit arranged between the transmission connecting rod 23 and the rotating connecting column 44, so that when the pushing force applied by the transmission connecting rod 23 to the rotating connecting column 44 reaches a preset threshold, the servo motor clamps, thereby realizing constant force pulling of the tensile limiting assembly 5 on the transmission slider 43, to ensure the accuracy and stability of the pulling force output of the pulling test, facilitate the pulling state to be maintained, and monitor the related data of the cable failure deformation under constant force pulling through pressure sensing monitoring. The stepping motor 21 provided in the present application can drive the four transmission sliders 43 to move equivalently in different directions through the equivalent deflection polygon 22 and the transmission connecting rod 23, so that the tensile limiting assembly 5 connected to the four transmission sliders 43 can equivalently pull the circular cable to be tested defined by the cable body clamping assembly 6 at multiple points, thereby improving the effect and deformation dispersion of the pulling test, to more accurately and stably test the tensile performance data of the cable. The present application can also adjust the preset torque and torque value, thereby realizing tensile test of the cable under different strengths, and improving the application range of the tensile test.

[0029] Preferably, the equivalent tensile transmission assembly 4 comprises through guide grooves 41, guide sliding rods 42, transmission sliding blocks 43, rotating connecting columns 44 and mounting plate seats 45. Preferably, a plurality of through guide grooves 41 are annularly and spacedly embedded on the top surface of the shell 3 in a rotationally symmetrical manner. Further preferably, the groove cavities of the through guide grooves 41 are in communication with the shell cavities of the shell 3. Preferably, the guide sliding rods 42 parallel to the length direction are inserted into the through guide grooves 41. Preferably, the transmission sliding blocks 43 capable of reciprocating translation along the rod body axially are slidingly sleeved on the guide sliding rods 42. Preferably, the rotating connecting columns 44 and the mounting plate seats 45 are respectively connected on the bottom surface and the top surface of the transmission sliding blocks 43 extending out of the through guide grooves 41. The through guide grooves 41 and the guide sliding rods 42 provided in the application can cooperatively limit and guide the transmission sliding blocks 43, so that the transmission sliding blocks 43 can stably translate under the push-pull of the transmission connecting rods 23, and the top part provided with the mounting plate seats 45 can facilitate the stable installation of the tensile limiting assembly 5, so that the two form an integrated translation structure, and then the cable is pulled with high precision and stability, so as to ensure the stability and controllability of the cable during the stretching process.

[0030] Preferably, the scale bars 411 parallel to the guide sliding rods 42 are embedded on the groove top walls of the through guide grooves 41, so that the scale bars 411 can effectively demarcate the translation distance of the transmission sliding blocks 43, so as to measure the tensile deformation amount of the cable body when being pulled under the pre-set torsion, and then the tensile strength of the cable body is obtained. Preferably, the side surface of the transmission sliding blocks 43 close to the mounting plate seats 45 is provided with the scale indicating bars 431 perpendicular to the scale bars 411, so as to facilitate the reading of the displacement amount by the operator or the visual sensing unit. Preferably, displacement sensors can also be provided on the transmission sliding blocks 43, so as to directly measure the displacement amount by sensing monitoring. The scale bars 411 and the scale indicating bars 431 provided in the application can cooperatively represent the translation amount, so as to conveniently and accurately measure the tensile deformation amount of the coiled cable, so as to obtain the tensile degree of the cable under the pre-set pulling force, and then the tensile deformation strength is calculated according to the pulling force and the tensile amount.

[0031] Preferably, the inclined vertical plate 51 of the stretching limiting assembly 5 is supported on the mounting plate seat 45 in a manner of being coplanar with the guide slide rod 42. Preferably, a stepped gap 511 for arranging the cable is further formed on the side edge of the plate body of the inclined vertical plate 51, and a protective column 52 is arranged on the side edge of the plate body forming the stepped gap 511. Preferably, the surface of the protective column 52 is coated with a wear-resistant scratch-resistant film layer 521. Preferably, a long-strip-shaped flexible film pressure sensor is wrapped on the protective column 52 in the vertical state. Preferably, the two sides of the protective column 52 can be further provided with an extension arc plate capable of dispersing the pulling force to avoid excessive concentration of stress on the cable.

[0032] Preferably, the cable clamping assembly 6 comprises a limiting bottom plate 61 arranged in a staggered manner on the two opposite plate surfaces of the inclined vertical plate 51 and a limiting clamping plate 62 detachably connected to the limiting bottom plate 61 through a connecting bolt 63. Preferably, a first U-shaped arc groove 611 and a second U-shaped arc groove 621 capable of limiting the clamping position of the cable are arranged in a position opposite to each other on the limiting bottom plate 61 and the limiting clamping plate 62. Specifically, the first U-shaped arc groove 611 and the second U-shaped arc groove 621 are both arc-shaped grooves with a radius of the cross-sectional arc being much larger than the radius of the cable, so that they can be adapted to a plurality of different cables. Specifically, the first U-shaped arc groove 611 and the second U-shaped arc groove 621 are used for auxiliary positioning, so that the cable is effectively bent, and it is not necessary to completely adapt to the surface profile of the cable. The fixing of the cable is mainly realized by the clamping of the two plate bodies in a position opposite to each other. The limiting bottom plate 61 and the limiting clamping plate 62 arranged in the application can effectively clamp the bent cable end, so that the cable can form a loop cable structure in the stretching limiting assembly 5, which is convenient for uniform pulling at multiple points, ensures that the stretching deformation of the multiple-point equivalent pulling in the stretching test occurs in a substantially uniform interval, and thus completes the multi-section test of the cable at one time, so as to realize the synchronous test at multiple points, reduces the insufficiency and specificity of single-point test, and ensures the reliability of the test.

[0033] Preferably, the electric elements such as the lifting column 12 and the stepping motor 21 are electrically connected with the controller and the power supply. The control mode of the application is controlled by the controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art. The provision of the power supply also belongs to the common knowledge in the art, and the mechanical device and the mechanical structure features thereof are only protected in the application. Therefore, the control mode and the circuit connection are not explained in detail.

[0034] The utility model is not limited to the above optional implementation, anyone can draw other various forms of product under the enlightenment of the utility model, but no matter make any change in its shape or structure, all the technical schemes falling into the scope defined by the utility model claims are within the protection scope of the utility model. The utility model specification and its drawings should be understood as illustrative rather than limiting the claims. The protection scope of the utility model is defined by the claims and its equivalents. In the full text, the features guided by "preferably" are only optional ways, and should not be understood as necessarily setting, so the applicant reserves the right to abandon or delete the relevant preferred features at any time.

Claims

1. A cable tensile strength testing fixture, comprising a worktable (1) adjustable according to requirements, characterized in that, A cover (3) is provided on the workbench (1) to define the installation space of the equivalent stretching drive assembly (2), and multiple equivalent stretching drive assemblies (4) that are connected to the same equivalent stretching drive assembly (2) are installed on the top surface of the cover (3) in a rotationally symmetrical manner about the center of its top surface. The equivalent tension transmission assembly (4) is located above the cover (3) and its moving end is connected to a tension limiting assembly (5) that can stretch the cable body to be tested. Furthermore, at least one of the tension limiting assemblies (5) is provided with a cable clamping assembly (6) that can fix the cable end.

2. The cable tensile strength testing fixture as described in claim 1, characterized in that, The equivalent tensile transmission assembly (4) includes a through guide groove (41), a guide slide rod (42), a transmission slider (43), a rotating connecting column (44), and a mounting plate base (45), wherein, Multiple through guide slots (41) are circumferentially spaced and fitted onto the top surface of the cover (3) in a rotationally symmetrical manner. A guide slide rod (42) parallel to the length direction is inserted into the through guide groove (41), and a transmission slider (43) capable of reciprocating translation along its axial direction is slidably sleeved on the guide slide rod (42); The rotating connecting column (44) and the mounting plate base (45) are respectively connected to the bottom and top surfaces of the transmission slider (43) extending from the through guide groove (41).

3. The cable tensile strength testing fixture as described in claim 2, characterized in that, The equivalent stretching drive assembly (2) includes a stepper motor (21) mounted on the worktable (1), an equivalent deflection polygonal plate (22) sleeved on the rotation shaft of the stepper motor (21), and a transmission link (23) rotatably connected to the corner of the equivalent deflection polygonal plate (22).

4. The cable tensile strength testing fixture as described in claim 3, characterized in that, The inclined vertical plate (51) of the tension limiting assembly (5) is supported on the mounting plate base (45) in a manner coplanar with the guide slide rod (42). A stepped notch (511) for arranging cables is provided on the side of the inclined vertical plate (51), and a protective column (52) is provided on the side edge of the plate forming the stepped notch (511).

5. The cable tensile strength testing fixture as described in claim 4, characterized in that, A scale bar (411) parallel to the guide slide rod (42) is embedded on the top wall of the through guide groove (41).

6. The cable tensile strength testing fixture as described in claim 5, characterized in that, The transmission slider (43) has a scale indicator bar (431) that is perpendicular to the scale bar (411) on its side near the mounting plate (45).

7. The cable tensile strength testing fixture as described in claim 6, characterized in that, The end of the transmission link (23) away from the equivalent deflection polygonal plate (22) is rotatably sleeved on the rotating connecting column (44).

8. The cable tensile strength testing fixture as described in claim 7, characterized in that, The cable clamping assembly (6) includes a limiting base plate (61) offset on two opposing plates of the inclined vertical plate (51) and a limiting clamping plate (62) detachably connected to the limiting base plate (61) by connecting bolts (63), wherein, A first U-shaped arc groove (611) and a second U-shaped arc groove (621) are arranged on the limiting base plate (61) and the limiting clamping plate (62) to limit the cable clamping position.

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