CN112255110A - Wire flexibility test member, test device and test method - Google Patents
Wire flexibility test member, test device and test method Download PDFInfo
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- CN112255110A CN112255110A CN202011281392.5A CN202011281392A CN112255110A CN 112255110 A CN112255110 A CN 112255110A CN 202011281392 A CN202011281392 A CN 202011281392A CN 112255110 A CN112255110 A CN 112255110A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/14—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by dead weight, e.g. pendulum; generated by springs tension
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0012—Constant speed test
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0033—Weight
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0262—Shape of the specimen
- G01N2203/0278—Thin specimens
- G01N2203/028—One dimensional, e.g. filaments, wires, ropes or cables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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Abstract
The invention provides a wire flexibility test component, a test device and a test method. The electric wire flexibility testing component comprises a guide wheel mounting plate and n sliding guide wheels, wherein n is more than or equal to 4; the n sliding guide wheels are arranged on guide wheel mounting holes of the guide wheel mounting plate, and the guide wheel mounting holes are designed in a non-limiting adjustable mode and are used for adjusting the distance between the sliding guide wheels; the n sliding guide wheels comprise two end sliding guide wheels and a plurality of middle sliding guide wheels, the two end sliding guide wheels are respectively located at two ends of the guide wheel mounting plate, the middle sliding guide wheels are located between the two end sliding guide wheels, the centers of the middle sliding guide wheels are located on the same straight line, the two end sliding guide wheels are respectively located on two sides of the straight line, the distance between the two end sliding guide wheels and the center axis of any two adjacent sliding guide wheels are consistent in the direction perpendicular to the straight line. The device can test the flexibility of the electric wire.
Description
Technical Field
The invention relates to the technical field of wiring harness wiring, in particular to a wire flexibility testing component, a testing device and a testing method.
Background
With the improvement of the wire harness processing and the wire harness wiring requirements, a wire harness company puts higher requirements on the flexibility of the electric wire, but in the prior art, the flexibility of the electric wire can only be identified by artificial perception, or the electric wire with a larger section can be roughly identified by the bending radius of the electric wire, so that the flexibility of the electric wire is difficult to accurately test, and the defects of the wire harness are that the perception deviation of different people is easy to occur, so that the design of the electric wire, the selection of materials, the design of the processing technology and the like are greatly influenced. If flexibility is sought after in terms of material selection or process design, other properties of the wire, such as abrasion resistance of insulation, mechanical properties of insulation, high temperature pressure properties, etc., are likely to be affected. Therefore, the wiring process is affected to some extent.
Therefore, there is a need for a device capable of testing the flexibility of an electric wire, which quantifies the flexibility requirement of the electric wire.
Disclosure of Invention
The invention provides a wire flexibility testing component, a testing device and a testing method, which aim to overcome the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme.
The invention provides a wire flexibility test member, comprising: the guide wheel mounting plate comprises a guide wheel mounting plate and n sliding guide wheels, wherein n is more than or equal to 4;
the n sliding guide wheels are arranged on guide wheel mounting holes of the guide wheel mounting plate, and the guide wheel mounting holes are designed in a non-limiting adjustable mode and are used for adjusting the distance between the sliding guide wheels;
the n sliding guide wheels comprise two end sliding guide wheels and a plurality of middle sliding guide wheels, the two end sliding guide wheels are respectively located at two ends of the guide wheel mounting plate, the middle sliding guide wheels are located between the two end sliding guide wheels, the center of the middle sliding guide wheels is located on the same straight line, the two end sliding guide wheels are respectively located on two sides of the straight line and are consistent in distance with the straight line, and the distance between any two adjacent sliding guide wheels is consistent in the direction perpendicular to the straight line and between the central axes of the two sliding guide wheels.
Preferably, the guide wheel mounting hole is a long hole, and a limiting piece is arranged in the guide wheel mounting hole.
Preferably, the sliding guide pulley comprises: the wire guide device comprises a guide wheel, a bearing and a middle shaft, wherein the sliding guide wheel is fixed on a guide wheel mounting plate through the middle shaft, a wire guide groove is formed in the guide wheel and used for winding a wire to be tested, the length of the guide wheel mounting plate is 300-400 mm, and the thickness of the guide wheel mounting plate is not less than 5.0 mm.
Preferably, the diameter phi of the guide wheel is 29 +/-0.5 mm, the width of the guide wheel is 10 +/-0.5 mm, the arc radius R of the wire guide groove is 9mm, and the diameter range of the wire suitable for testing is 1.0 mm-4.5 mm.
Preferably, the diameter phi of the guide wheel is 35 +/-0.5 mm, the width of the guide wheel is 12 +/-0.5 mm, the arc radius R of the wire guide groove is 8mm, and the diameter range of the wire suitable for testing is 4.6 mm-6.0 mm.
Preferably, the distance between the central axes of any two adjacent sliding guide wheels in the direction perpendicular to the straight line is 42 +/-1 mm.
Preferably, the distance between the central axes of any two adjacent sliding guide wheels in the direction perpendicular to the straight line is 55 +/-1 mm.
Preferably, the distance between the center of each of the two end sliding guide wheels and the straight line is 18 +/-0.5 mm.
Another aspect of the present invention provides an electric wire flexibility testing apparatus using the above-mentioned testing member, further comprising: a tensile machine and weights;
the tensile machine is connected with the wire to be tested through the clamp and is used for measuring the tensile force applied to the wire to be tested;
the test component is fixed in a certain range of the tensile machine and is used for enabling the wire to be tested to be wound on the test component in a wavy manner, so that the tensile machine can test the tensile value applied to the wire in a bending state;
the weight is used for being tied on the wire to be tested so that the wire to be tested passes through the testing part.
The invention also provides a test method for testing the flexibility of the electric wire by applying the test device, which comprises the following steps:
a, keeping a testing environment at 23 +/-1 ℃, and placing the wire to be tested in the testing environment for at least 2 hours;
b, tying one end of the wire to be tested on a clamp of a tensile machine, winding the wire to be tested on each sliding guide wheel of the test component in a wavy manner, applying F2 force to the other end of the wire to be tested through weights, setting the tensile machine to pull the wire to be tested to pass through the test component at the speed of 50mm/min, and pulling the wire to be tested to move for about 125mm to obtain a tensile value F1;
c, replacing the electric wire to be measured with soft cotton or aramid roving with the diameter of 1.5-2.5 mm, and measuring a tension value F3, namely a resistance value of the device, by adopting the same method as the step B;
d, quantifying the flexibility of the wire to be tested according to the following formula (1):
F＝F1-F2-F3 (1)
according to the technical scheme provided by the electric wire flexibility testing device, the electric wire flexibility testing device has the following beneficial effects:
1) the testing component can measure the tension value of the wire to be tested in a bending state passing through the guide wheel through the position design of the sliding guide wheel, then subtracts the weight of the load weight and the resistance value of the guide wheel, obtains a numerical value as a wire flexibility testing value, and quantifies the flexibility of the wire to be tested;
2) the flexibility of the twisted soft conductor wire with the diameter of 1.0-4.5 mm and 4.6-6.0 mm can be respectively tested by the specific parameter setting of the parts, so that the soft value and the hard value of the wire are subjected to quantitative requirements according to the product application, the product performance and the like;
3) the guide wheel mounting holes on the guide wheel mounting plate are designed in a non-limiting adjustable mode, and the indexes of the test wires can be adjusted by changing the position of the sliding guide wheel, so that one plate is multipurpose, and the cost is saved economically;
4) the test component is an independent component and can be used together with a tensile machine, and when in test, the test component is arranged on the tensile machine, so that the operation is simple, the test component is convenient to store, and the cost is lower.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic structural view of a wire flexibility testing apparatus according to example 1;
FIG. 2 is a schematic structural diagram of a test part 2 according to one embodiment of the present invention;
FIG. 3 is a schematic view of a position of a sliding idler on an idler mounting plate according to one embodiment of the present disclosure;
FIG. 4 is a schematic front view of a sliding idler according to one embodiment of the present disclosure;
FIG. 5 is a schematic side view of a sliding idler construction according to one embodiment of the present disclosure;
FIG. 6 is a schematic structural view of a device for testing flexibility of an electric wire according to example 2;
FIG. 7 is a schematic view of a position of a sliding idler on an idler mounting plate according to another embodiment of the present disclosure;
FIG. 8 is a schematic side view of a sliding idler construction according to another embodiment of the present disclosure;
FIG. 9 is a schematic view of a idler mounting plate configuration.
Description of reference numerals:
1 clamp 2 test part 3 weight 4 wire 5 to be tested horizontal tensile machine 6 vertical tensile machine 7 middle slide guide wheel 8 end slide guide wheel 9 end slide guide wheel 10 guide wheel mounting plate 11 guide wheel mounting hole 12 reserved mounting hole 13 guide wheel 14 bearing 15 middle shaft 16 straight line
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
For the convenience of understanding the embodiments of the present invention, the following description will be further explained by taking several specific embodiments as examples in conjunction with the drawings, and the embodiments are not to be construed as limiting the embodiments of the present invention.
Example 1
Fig. 1 is a schematic structural diagram of a wire flexibility testing apparatus according to embodiment 1, and referring to fig. 1, the apparatus includes: horizontal tensile machine 5, test part 2 and weight 3.
The horizontal tensile machine 5 is connected to the electric wire 4 to be tested through the jig 1, and is used for measuring the tensile force with which the electric wire 4 to be tested passes through the test member 2.
The testing component 2 is fixed in a certain range of the horizontal tensile machine 5, schematically, the testing component 2 and the clamp of the horizontal tensile machine in this embodiment are positioned on the same horizontal line, so that the tensile direction of the electric wire and the clamp direction of the tensile machine are on the same horizontal line, 6 sliding guide wheels are arranged on the testing component 2 in a staggered manner, and are used for winding the electric wire 4 to be tested on the testing component 2 in a wavy manner, so that the horizontal tensile machine 5 can test the tensile value applied to the electric wire 4 to be tested in a bent state;
the weight 3 is used for being tied on the wire 4 to be tested so that the wire 4 to be tested passes through the testing part 2.
Fig. 2 is a schematic structural diagram of the test component 2, fig. 3 is a schematic positional diagram of the slide guide wheels on the guide wheel mounting plate, and referring to fig. 2 and 3, the test component 2 includes a guide wheel mounting plate 10 and 6 slide guide wheels (7, 8, 9); the 6 sliding guide wheels comprise two end sliding guide wheels (8 and 9) and 4 middle sliding guide wheels (7), the sliding guide wheels (7, 8 and 9) are installed on the guide wheel installation plate 10, the two end sliding guide wheels (8 and 9) are respectively located at two ends of the guide wheel installation plate, the centers of the 4 middle sliding guide wheels 7 are located on the same straight line (such as a straight line 16 shown in fig. 3), the two end sliding guide wheels are respectively located on two sides of the straight line 16, and the distance from the straight line 16 is consistent. The distance between the central axes of any two adjacent sliding guide wheels is consistent in the direction perpendicular to the straight line 16.
Fig. 4 is a schematic front view of the structure of the slide guide roller, fig. 5 is a schematic side view of the structure of the slide guide roller, and referring to fig. 4 and 5, the slide guide roller comprises: the guide wheel 13, the bearing 14 and the middle shaft 15, the sliding guide wheel is fixed on the guide wheel mounting plate 10 through the middle shaft 15, and the guide wheel 13 is provided with a wire guide groove for winding the wire 4 to be measured.
In this embodiment, referring to fig. 5, the diameter phi of the guide wheel may be 29 ± 0.5mm, the width of the guide wheel is 10 ± 0.5mm, the arc radius R of the wire groove is 9mm, and the diameter range of the wire 4 to be tested is 1.0mm to 4.5 mm. The distance between the center of each end sliding guide wheel and the straight line 16 is 18 +/-0.5 mm (refer to fig. 3), and the distance between the central axes of any two adjacent sliding guide wheels in the direction perpendicular to the straight line 16 is 42 +/-1 mm (refer to fig. 3).
Or, referring to fig. 8, the diameter phi of the guide wheel may be 35 ± 0.5mm, the width of the guide wheel is 12 ± 0.5mm, the arc radius R of the wire groove is 8mm, and the diameter range of the wire 4 to be tested is 4.6mm to 6.0 mm. The distance between the center of each end sliding guide wheel and the straight line 16 is 18 +/-0.5 mm (refer to fig. 7), and the distance between the central axes of any two adjacent sliding guide wheels in the direction perpendicular to the straight line 16 is 55 +/-1 mm (refer to fig. 7).
The guide wheel mounting plate is a stainless steel plate with the thickness not less than 5.0mm, and the length of the guide wheel mounting plate is 300-400 mm.
The guide wheel mounting plate is provided with guide wheel mounting holes, the sliding guide wheels are mounted in the guide wheel mounting holes, and the guide wheel mounting holes are designed in a non-limiting adjustable mode and used for adjusting the distance between the sliding guide wheels. The guide wheel mounting hole is a long hole, and a limiting piece is arranged in the guide wheel mounting hole and used for limiting the position of the sliding guide wheel in the guide wheel mounting hole, so that the distance between the sliding guide wheels is adjusted. The guide wheel mounting holes are designed in a non-limiting adjustable mode, and the guide wheel mounting plates do not need to be replaced aiming at different types of sliding guide wheels, so that one plate is multipurpose, and the cost is saved.
Example 2
Fig. 6 is a schematic structural view of the electric wire flexibility testing apparatus of embodiment 2, and referring to fig. 6, the apparatus includes a vertical tensile machine 6, a testing member 2, and a weight 3.
The vertical tensile machine 6 is connected to the electric wire 4 to be tested through the jig 1, and measures the tensile force for passing the electric wire 4 to be tested through the test member 2.
The test component 2 is fixed on a preset position of the vertical tensile machine 6, the test component 2 in the embodiment is fixed on a support rod of the vertical tensile machine 6, so that the tensile direction of the electric wire and the clamp direction of the tensile machine are on the same straight line, 6 sliding guide wheels are arranged on the test component 2 in a staggered mode and used for enabling the electric wire 4 to be tested to be wound on the test component 2 in a wavy mode, and the vertical tensile machine 6 can test the tensile value applied to the electric wire 4 to be tested in a bending state.
The weight 3 is used for being tied on the wire 4 to be tested so that the wire 4 to be tested passes through the testing part 2.
The test component 2 comprises a guide wheel mounting plate and 6 sliding guide wheels; the slip guide pulley is installed on the guide pulley mounting hole of guide pulley mounting panel, the slip guide pulley includes two tip slip guide pulleys and 4 middle slip guide pulleys, two tip slip guide pulleys (8 and 9) are located the both ends of guide pulley mounting panel respectively, 4 middle slip guide pulleys are located respectively between two tip slip guide pulleys, and the center is located same straight line 16 (refer to fig. 3), two tip slip guide pulleys are located the both sides of straight line 16 respectively, and the distance apart from straight line 16 is unanimous, in the direction of perpendicular to straight line 16, the distance between the central axis of arbitrary two adjacent slip guide pulleys is unanimous.
In this embodiment, referring to fig. 5, the diameter phi of the guide wheel may be 29 ± 0.5mm, the width of the guide wheel is 10 ± 0.5mm, the arc radius R of the wire groove is 9mm, and the diameter range of the wire 4 to be tested is 1.0mm to 4.5 mm. The distance between the center of each end sliding guide wheel and the straight line 16 is 18 +/-0.5 mm (refer to fig. 3), and the distance between the central axes of any two adjacent sliding guide wheels in the direction perpendicular to the straight line 16 is 42 +/-1 mm (refer to fig. 3).
Or, referring to fig. 8, the diameter phi of the guide wheel may be 35 ± 0.5mm, the width of the guide wheel is 12 ± 0.5mm, the arc radius R of the wire groove is 8mm, and the diameter range of the wire 4 to be tested is 4.6mm to 6.0 mm. The distance between the center of each end sliding guide wheel and the straight line 16 is 18 +/-0.5 mm (refer to fig. 7), and the distance between the central axes of any two adjacent sliding guide wheels in the direction perpendicular to the straight line 16 is 55 +/-1 mm (refer to fig. 7).
The thickness of the guide wheel mounting plate is not less than 5.0mm, and the length of the guide wheel mounting plate is 300-400 mm.
Fig. 9 is a schematic structural diagram of the guide wheel mounting plate, and referring to fig. 9, a guide wheel mounting hole 11 and a reserved mounting hole 12 are formed in the guide wheel mounting plate 10, the guide wheel mounting hole 11 is used for mounting a sliding guide wheel, and the reserved mounting hole 12 is used for fixing the test component 2 on a tensile machine. The guide wheel mounting hole adopts the design with adjustable it is non-limiting, can adjust the installation spacing of slip guide pulley, and schematically, the guide wheel mounting hole can adopt the hole of rectangular form, and is provided with the locating part in the guide wheel mounting hole to the position of adjustment slip guide pulley.
Example 3
The embodiment provides a method for testing the flexibility of an electric wire by using a testing device, which comprises the following specific steps:
the specific test steps are as follows:
a, keeping the testing environment at 23 +/-1 ℃, and placing a testing sample piece in the testing environment for at least 2 hours;
b, tying one end of the wire to be tested on a clamp of a tensile machine, winding the wire to be tested on each sliding guide wheel of the test component in a wavy manner, applying F2 force to the other end of the wire to be tested through weights, setting the tensile machine to pull the wire to be tested to pass through the test component at the speed of 50mm/min, and pulling the wire to be tested to move for about 125mm to obtain a tensile value F1;
c, replacing the electric wire to be measured with soft cotton or aramid roving with the diameter of 1.5-2.5 mm, and measuring a tension value F3, namely a resistance value of the device, by adopting the same method as the step B;
d, quantifying the flexibility of the wire to be tested according to the following formula (1):
F＝F1-F2-F3 (1)
the softer the electric wire, the smaller the tensile force value F, the harder the electric wire, the larger the tensile force value F, and from this, the flexibility of the electric wire to be measured can be quantified through the tensile force value F.
It will be appreciated by those skilled in the art that the number of components shown in fig. 1 for simplicity only may be less than that in an actual device, but such omissions are clearly not to be considered as a prerequisite for a clear and complete disclosure of the embodiments of the invention.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for apparatus or system embodiments, since they are substantially similar to method embodiments, they are described in relative terms, as long as they are described in partial descriptions of method embodiments. The above-described embodiments of the apparatus and system are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An electric wire flexibility test member, comprising: the guide wheel mounting plate comprises a guide wheel mounting plate and n sliding guide wheels, wherein n is more than or equal to 4;
the n sliding guide wheels are arranged on guide wheel mounting holes of the guide wheel mounting plate, and the guide wheel mounting holes are designed in a non-limiting adjustable mode and are used for adjusting the distance between the sliding guide wheels;
the n sliding guide wheels comprise two end sliding guide wheels and a plurality of middle sliding guide wheels, the two end sliding guide wheels are respectively located at two ends of the guide wheel mounting plate, the middle sliding guide wheels are located between the two end sliding guide wheels, the center of the middle sliding guide wheels is located on the same straight line, the two end sliding guide wheels are respectively located on two sides of the straight line and are consistent in distance with the straight line, and the distance between any two adjacent sliding guide wheels is consistent in the direction perpendicular to the straight line and between the central axes of the two sliding guide wheels.
2. The test member of claim 1, wherein the guide wheel mounting hole is a slot and the guide wheel mounting hole has a stop therein.
3. The test member of claim 1, wherein the sliding guide comprises: the wire guide device comprises a guide wheel, a bearing and a middle shaft, wherein the sliding guide wheel is fixed on a guide wheel mounting plate through the middle shaft, a wire guide groove is formed in the guide wheel and used for winding a wire to be tested, the length of the guide wheel mounting plate is 300-400 mm, and the thickness of the guide wheel mounting plate is not less than 5.0 mm.
4. The test member as claimed in claim 3, wherein the diameter of the guide wheel is 29 ± 0.5mm, the width of the guide wheel is 10 ± 0.5mm, the radius of the arc of the wire groove is 9mm, and the diameter of the applicable test wire is 1.0mm to 4.5 mm.
5. The test member as claimed in claim 3, wherein the diameter of the guide wheel is 35 ± 0.5mm, the width of the guide wheel is 12 ± 0.5mm, the radius R of the arc of the wire groove is 8mm, and the diameter of the applicable test wire is 4.6mm to 6.0 mm.
6. The test member of claim 4, wherein the distance between the central axes of any two adjacent sliding guide wheels in the direction perpendicular to the straight line is 42 ± 1 mm.
7. The test member of claim 5, wherein the distance between the central axes of any two adjacent sliding guide wheels in the direction perpendicular to the straight line is 55 ± 1 mm.
8. The test member of claim 1, wherein the distance between the center of each of the two end sliding guide wheels and the straight line is 18 ± 0.5 mm.
9. An electric wire flexibility test apparatus to which the test member of any one of claims 1 to 8 is applied, characterized by further comprising: a tensile machine and weights;
the tensile machine is connected with the wire to be tested through the clamp and is used for measuring the tensile force applied to the wire to be tested;
the test component is fixed in a certain range of the tensile machine and is used for enabling the wire to be tested to be wound on the test component in a wavy manner, so that the tensile machine can test the tensile value applied to the wire in a bending state;
the weight is used for being tied on the wire to be tested so that the wire to be tested passes through the testing part.
10. A method for testing flexibility of an electric wire by using the testing device of claim 9, comprising the steps of:
a, keeping a testing environment at 23 +/-1 ℃, and placing the wire to be tested in the testing environment for at least 2 hours;
b, tying one end of the wire to be tested on a clamp of a tensile machine, winding the wire to be tested on each sliding guide wheel of the test component in a wavy manner, applying F2 force to the other end of the wire to be tested through weights, setting the tensile machine to pull the wire to be tested to pass through the test component at the speed of 50mm/min, and pulling the wire to be tested to move for about 125mm to obtain a tensile value F1;
c, replacing the electric wire to be measured with soft cotton or aramid roving with the diameter of 1.5-2.5 mm, and measuring a tension value F3, namely a resistance value of the device, by adopting the same method as the step B;
d, quantifying the flexibility of the wire to be tested according to the following formula (1):
F＝F1-F2-F3(1)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011281392.5A CN112255110A (en) | 2020-11-16 | 2020-11-16 | Wire flexibility test member, test device and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011281392.5A CN112255110A (en) | 2020-11-16 | 2020-11-16 | Wire flexibility test member, test device and test method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112255110A true CN112255110A (en) | 2021-01-22 |
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| CN202011281392.5A Pending CN112255110A (en) | 2020-11-16 | 2020-11-16 | Wire flexibility test member, test device and test method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880969A (en) * | 2021-03-01 | 2021-06-01 | 长飞光纤光缆股份有限公司 | Device and method for testing surface properties of optical fiber |
| CN113138127A (en) * | 2021-04-28 | 2021-07-20 | 深圳中宝新材科技有限公司 | Silver alloy bonding wire aging resistance testing device and using method thereof |
| CN114778350A (en) * | 2022-06-16 | 2022-07-22 | 深圳市博音导线电子科技有限公司 | Softness performance detection device based on electronic connection line |
-
2020
- 2020-11-16 CN CN202011281392.5A patent/CN112255110A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112880969A (en) * | 2021-03-01 | 2021-06-01 | 长飞光纤光缆股份有限公司 | Device and method for testing surface properties of optical fiber |
| CN112880969B (en) * | 2021-03-01 | 2022-07-08 | 长飞光纤光缆股份有限公司 | Device and method for testing surface properties of optical fiber |
| CN113138127A (en) * | 2021-04-28 | 2021-07-20 | 深圳中宝新材科技有限公司 | Silver alloy bonding wire aging resistance testing device and using method thereof |
| CN113138127B (en) * | 2021-04-28 | 2022-05-31 | 深圳中宝新材科技有限公司 | Silver alloy bonding wire aging resistance testing device and using method thereof |
| CN114778350A (en) * | 2022-06-16 | 2022-07-22 | 深圳市博音导线电子科技有限公司 | Softness performance detection device based on electronic connection line |
| CN114778350B (en) * | 2022-06-16 | 2022-09-06 | 深圳市博音导线电子科技有限公司 | Softness performance detection device based on electronic connection line |
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