Wire hardness testing device
By designing a wire hardness testing device with a support plate and a semi-circular protractor, the problem of existing wire testing equipment being unable to perform low-cost and efficient testing under extreme conditions is solved. This device achieves wire hardness measurement that is simple in structure, easy to operate, and accurate, and is suitable for various environments.
Patent Information
- Application Number
- CN202423063920.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-12
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2034-12-12
AI Technical Summary
Existing wire testing equipment cannot perform softness and hardness testing at low cost and high efficiency under extreme conditions, and the operation is complicated, making it difficult to guarantee the accuracy and consistency of test results.
A wire stiffness testing device was designed, including a support plate and a semi-circular protractor. The wire is fixed by a first positioning component and a second positioning component. The sag of the wire under extreme conditions is measured by weights. The device has a simple structure, is easy to operate, and is adaptable to various environments.
It enables accurate measurement of wire hardness under extreme conditions, simplifies the operation process, reduces costs, and improves testing efficiency and accuracy, making it suitable for large-scale production and application.
Smart Images
Figure CN223796341U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wire and cable manufacturing technology, and specifically to a wire hardness testing device. Background Technology
[0002] The interior of wires and cables consists of solid or stranded conductors, while the surface is extruded with various materials such as polyethylene, polyvinyl chloride mixtures, and rubber. The surface insulation material hardens and may even crack at low temperatures. Due to differences in the source of the insulation material, variations in formulation and additives exist, and even wires and cables from different batches from the same source can exhibit significant differences in hardness. Excessive hardness can affect downstream assembly; therefore, it is necessary to test the hardness of wires and cables under low-temperature conditions to control product quality consistency.
[0003] Currently, there are no relevant testing standards for the hardness and flexibility of wires on the market. Although some testing instruments exist, these instruments are based on slightly modified versions of industry standards for other materials, and therefore lack standardization. Additionally, non-standard testing equipment has been developed to test the bending stiffness of wires, referencing other industry standards. However, this equipment is complex, contains sophisticated sensors, and can only be used at room temperature. It requires a high level of operational skill to obtain accurate results and is also costly.
[0004] Therefore, current wire testing equipment is still unable to perform efficient testing at low cost under extreme conditions. Utility Model Content
[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a wire hardness testing device. This device can test the hardness of wires under extreme conditions and has the advantages of simple structure, easy operation and low cost.
[0006] To achieve one of the above objectives, this utility model provides the following technical solution:
[0007] The wire stiffness testing device disclosed in this embodiment includes a support plate perpendicular to a horizontal plane, and testing components are provided on the support plate.
[0008] The testing component includes a semicircular protractor mounted on the support plate. The semicircular protractor includes a straight side and an arc-shaped measuring side. The straight side is parallel to the horizontal plane, and the arc-shaped measuring side is close to the bottom edge of the support plate.
[0009] The straight edge is provided with a first positioning element in the middle, which is used to fix the middle part of the wire to be tested;
[0010] The two ends of the straight edge are respectively provided with second positioning parts for fixing and tightening the two ends of the wire to be tested;
[0011] After the wire under test is subjected to extreme conditions and detached from the second positioning member, weights are hung at both ends of the wire under test to cause the wire to sag, and the semicircular protractor displays the sag of the wire under test.
[0012] The support plate needs to be perpendicular to the horizontal plane. The semicircular protractor is set on the support plate, so the semicircular protractor is also perpendicular to the horizontal plane. The straight edge of the semicircular protractor is parallel to the horizontal plane, and the arc measuring edge of the semicircular protractor is close to the bottom edge of the support plate. When one end of the wire droops, the sag of the wire can be measured, and the sag can be directly reflected on the semicircular protractor.
[0013] Therefore, during use, the wire to be tested is extended and fixed along the straight edge of the semicircular protractor by the first and second positioning components. At this time, the straightened wire to be tested and the entire device can be placed under extreme conditions for temperature resistance testing, realizing extreme condition testing and making the test results more accurate. After the test, the second positioning component is loosened from both ends of the wire to be tested. By hanging weights at both ends of the wire, the sag of the wire after being treated under extreme conditions can be observed, thereby judging the hardness of the wire. The entire device has a simple structure, is easy to move, and can adapt to various environments for testing.
[0014] In some embodiments, the first positioning member includes a collar and a first abutting screw.
[0015] The collar is fixed to the support plate, and the axis of the collar extends along the direction of the straight edge. The first abutting screw passes through the side wall of the collar and presses against the side of the wire to be tested that passes through the collar.
[0016] The collar is fixed to the support plate for positioning. The middle part of the wire passes through the collar and is positioned on the surface of the support plate. The wire to be tested is stably clamped in the collar by the screwing action of the first abutting screw, thus achieving the function of positioning the wire. When the wire needs to be replaced, the first abutting screw can be loosened.
[0017] In some embodiments, the second positioning member includes a cap, a second abutment screw, and a tensioning member.
[0018] The cap is fitted onto the end of the wire to be tested. The second abutting screw passes through the cap and presses against the side of the wire to be tested located inside the cap. The tensioning member connects to the cap and straightens the wire to be tested along the straight edge extension direction.
[0019] The cap is first fitted onto the end of the wire to be tested, and then the end of the wire to be tested is fixed on the cap by the screwing in of the second abutment screw. Subsequently, the tensioning member can straighten the wire to be tested through the cap.
[0020] In some embodiments, the tensioning element includes a spring and a screw, the screw being fixed to both ends of the straight edge, one end of the spring being fixed to the screw, and the other end of the spring being detachably connected to the cap.
[0021] Screws are installed at both ends of the straight edge. One end of the spring can be positioned by fixing it to the screw, and the other end of the spring is connected to the cap, so that the tension force of the spring itself can be used to straighten the wire to be tested.
[0022] In some embodiments, a plurality of screw holes are provided at both ends of the straight edge, and the plurality of screw holes are distributed in a straight line along the extension direction of the straight edge, and the screw can be detachably installed in each screw hole.
[0023] Since several screw holes are linearly distributed along the extension direction of the straight edge, the spring can be adjusted to different positions when the screw is inserted into different screw holes, so that the spring can tighten the test wires of different lengths, ensuring the straightness of each test wire and ensuring the test effect.
[0024] In some embodiments, the cap is provided with a hook, and the spring or the weight is hooked onto the hook.
[0025] By setting a hook on the cap, it is easy to directly hang one end of the spring on the hook when it is needed, and to directly hang the weight on the hook when it is needed, thus achieving convenient operation.
[0026] In some embodiments, the range of the arc-shaped measuring edge is divided into a first range and a second range, which are symmetrically arranged on both sides of the axis of symmetry of the semicircular protractor. Each range is referred to as 0 to 90° and gradually increases from the end of the arc-shaped measuring edge towards the axis of symmetry.
[0027] Since only the middle part of the wire is fixed after it is released from the second positioning member, both ends of the wire will sag. In order to read the sag at both ends of the wire at the same time, the measuring range of the shape measuring edge is divided into a first range and a second range. The first range and the second range are symmetrically set on both sides of the axis of symmetry of the semicircular protractor. Each range is called 0 to 90° and gradually increases from the end of the arc measuring edge towards the axis of symmetry.
[0028] In some embodiments, the base is configured as a flat plate with a height adjustment screw mounted on it.
[0029] The base is designed as a flat plate, with the support plate and base arranged in a T-shape, which facilitates the vertical placement of the support plate.
[0030] The height adjustment screw is used to adjust the height of the plate.
[0031] In some embodiments, the test components are located on both the front and back sides of the support plate. By setting multiple test components, multiple wires can be tested simultaneously, which improves testing efficiency. More importantly, by comparing the test results of wires on two test components, it is possible to determine whether there are significant errors in the test results, thus ensuring the accuracy of the test.
[0032] The beneficial effects of this utility model's wire hardness testing device:
[0033] (1) The wire hardness testing device of this utility model makes the support plate perpendicular to the horizontal plane, and a semicircular protractor is set on the support plate. The wire to be tested is extended and fixed along the straight edge of the semicircular protractor by the first positioning member and the second positioning member. At this time, the straightened wire to be tested and the whole device can be placed under extreme conditions for temperature resistance testing, realizing extreme condition testing and making the test results more accurate. After the test, the second positioning member is loosened from both ends of the wire to be tested. By hanging weights at both ends of the wire, the sag of the wire after being treated under extreme conditions can be observed, thereby judging the hardness of the wire. The whole device has a simple structure and is easy to move. It can adapt to various environments for testing, ensuring the testing effect of the wire and is suitable for large-scale production and application.
[0034] (2) The wire hardness testing device of this utility model can set the wire hardness to be compared at different temperatures, which improves the testing effect. It can also complete the straightening and testing of the wire without disassembling the wire, avoiding multiple moving and disassembling of the sample, which affects the testing temperature, effectively simplifying the test and improving the testing temperature. Furthermore, the deformation of the wire can be directly read on the protractor, which improves the testing efficiency.
[0035] (3) The wire hardness testing device of this utility model has a small and simple structure, low requirements for operation level, and is suitable for testing in different environments or even sub-zero environments, and is easy to transport.
[0036] To achieve the second objective mentioned above, this utility model provides the following technical solution:
[0037] The beneficial effects of this utility model's method for testing the softness and hardness of wires are as follows:
[0038] The present invention provides a method for testing the hardness of wires. The wire hardness testing device can accurately detect the hardness of wires. The hardness of wires can be obtained simply by clamping the wire, hanging weights, and reading the semicircular protractor. It has the advantages of being easy to operate and is suitable for large-scale production and application. Attached Figure Description
[0039] Figure 1 This is a front view of the wire hardness and softness testing device according to an embodiment of this utility model.
[0040] Figure 2 This is a side view of the wire hardness and softness testing device according to an embodiment of the present invention.
[0041] Figure 3 This is a top view of the wire hardness and softness testing device according to an embodiment of the present invention.
[0042] Figure 4 This is a schematic diagram of the wire hardness testing device according to an embodiment of the present invention without any wire placed on it.
[0043] Figure 5 This is a schematic diagram of the wire placement in the wire hardness testing device according to an embodiment of the present invention.
[0044] Figure Labels
[0045] 1. Support plate; 2. Semicircular protractor; 3. Arc-shaped measuring edge; 4. Straight edge; 5. First positioning component; 6. Second positioning component; 7. Weight; 8. Ring; 9. First abutting screw; 10. Cap; 11. Second abutting screw; 12. Spring; 13. Screw; 14. Screw hole; 15. Hook; 16. First measuring range; 17. Second measuring range; 18. Wire; 19. Flat plate; 20. Height adjustment screw. Detailed Implementation
[0046] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.
[0047] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.
[0048] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.
[0049] Example 1
[0050] The interior of wires and cables consists of solid or stranded conductors, while the surface is extruded with various materials such as polyethylene, polyvinyl chloride mixtures, and rubber. The surface insulation material hardens and may even crack at low temperatures. Due to differences in the source of the insulation material, variations in formulation and additives exist, and even wires and cables from different batches from the same source can exhibit significant differences in hardness. Excessive hardness can affect downstream assembly; therefore, it is necessary to test the hardness of wires and cables under low-temperature conditions to control product quality consistency.
[0051] Currently, there are no relevant testing standards for the 18mm stiffness of wires on the market. Although some testing instruments exist, these instruments are based on slightly modified industry standards for other materials and are not truly standardized. Additionally, non-standard testing equipment has been developed to test the 18mm bending stiffness of wires, referencing other industry standards. However, this equipment is complex, contains sophisticated sensors, and can only be used at room temperature. It requires a high level of operator skill to obtain accurate results and is also costly.
[0052] Therefore, current wire testing equipment is still unable to perform efficient testing at low cost under extreme conditions.
[0053] For this technical issue, please refer to [link / reference]. Figures 1-5 This embodiment discloses a wire 18 hardness / softness testing device, including a support plate 1, which is perpendicular to the horizontal plane, and a testing component is provided on the support plate 1.
[0054] The testing component includes a semicircular protractor 2 mounted on the support plate 1. The semicircular protractor 2 includes a straight side 4 and an arc-shaped measuring side 3. The straight side 4 is parallel to the horizontal plane, and the arc-shaped measuring side 3 is close to the bottom edge of the support plate 1.
[0055] The straight edge 4 is provided with a first positioning member 5 in the middle, which is used to fix the middle part of the wire 18 to be tested;
[0056] The straight edge 4 is provided with a second positioning member 6 at both ends, which is used to fix and tighten the two ends of the wire 18 to be tested;
[0057] After the wire 18 to be tested is subjected to extreme conditions and detached from the second positioning member 6, the weights 7 are hung on both ends of the wire 18 to cause the wire 18 to sag, and the semicircular protractor 2 displays the sag of the wire 18.
[0058] The support plate 1 needs to be perpendicular to the horizontal plane. The semicircular protractor 2 is set on the support plate 1, so the semicircular protractor 2 is also perpendicular to the horizontal plane. The straight edge 4 of the semicircular protractor 2 is set to be parallel to the horizontal plane. The arc measuring edge 3 of the semicircular protractor 2 is close to the bottom edge of the support plate 1. When one end of the wire 18 droops, the sag of the wire 18 can be measured. The sag can be directly reflected on the semicircular protractor 2.
[0059] Therefore, during use, the wire 18 to be tested is extended and fixed along the straight edge 4 of the semicircular protractor 2 by the first positioning element 5 and the second positioning element 6. At this time, the straightened wire 18 to be tested and the entire device can be placed under extreme conditions for temperature resistance testing, realizing extreme condition testing and making the test results more accurate. After the test, the second positioning element 6 is released from both ends of the wire 18 to be tested. By hanging weights 7 at both ends of the wire 18, the sag of the wire 18 after being treated under extreme conditions can be observed, thereby judging the softness and hardness of the wire 18. The entire device has a simple structure, is easy to move, and can adapt to various environments for testing.
[0060] Specifically,
[0061] Support plate 1 must be placed perpendicular to the horizontal plane to ensure that the semicircular protractor 2 is also perpendicular to the horizontal plane.
[0062] The straight edge 4 of the semicircular protractor 2 should be parallel to the horizontal plane, and the arc-shaped measuring edge 3 should be close to the bottom edge of the support plate 1 to measure the sag of the wire 18. The first positioning element 5 and the second positioning element 6 are used to extend and fix the wire 18 to be tested along the straight edge 4 of the semicircular protractor 2, ensuring that the wire 18 maintains the correct position during the test. The straightened wire 18 and the entire device are placed under extreme conditions for a temperature resistance test to achieve extreme condition testing and improve the accuracy of the test results.
[0063] After the test, the second positioning piece 6 is loosened from both ends of the wire 18 to be tested. Weights 7 are hung at both ends of the wire 18 to observe the sag of the wire 18 after being subjected to extreme conditions.
[0064] In this embodiment, the first positioning member 5 includes a collar 8 and a first abutting screw 9.
[0065] The collar 8 is fixed to the support plate 1. The axis of the collar 8 extends along the direction of the straight edge 4. The first abutting screw 9 passes through the side wall of the collar 8 and presses against the side of the wire 18 to be tested that passes through the collar 8.
[0066] The collar 8 is fixed on the support plate 1 to achieve positioning. The middle part of the wire 18 passes through the collar 8 and is positioned on the plate surface of the support plate 1. The wire 18 to be tested is stably clamped in the collar 8 by the screwing action of the first abutting screw, thus achieving the positioning function of the wire 18. When the wire 18 needs to be replaced, the first abutting screw 9 can be loosened.
[0067] Specifically, the collar 8 is fixed to the support plate 1, serving as a reference for positioning the wire 18. The middle of the wire 18 passes through the collar 8, thus positioning the wire 18 on the surface of the support plate 1. By screwing in the first abutting screw 9, the wire 18 to be tested is stably clamped within the collar 8 using its pushing force, ensuring that the wire 18 will not shift or rotate during the test. When it is necessary to replace the wire 18, simply loosen the first abutting screw 9, and the wire 18 can be removed from the collar 8, facilitating quick replacement of the wire 18 to be tested. The first abutting screw 9 provides sufficient clamping force to ensure the stability of the wire 18 during the test, preventing the test results from being affected by the movement or vibration of the wire 18.
[0068] In this embodiment, the second positioning member 6 includes a cap 10, a second abutting screw 11, and a tensioning member.
[0069] The cap 10 is fitted onto the end of the wire 18 to be tested. The second abutting screw 11 passes through the cap 10 and presses against the side of the wire 18 to be tested located inside the cap 10. The tensioning member connects to the cap 10 and straightens the wire 18 to be tested along the extension direction of the straight edge 4.
[0070] The cap 10 is first fitted onto the end of the wire 18 to be tested, and then the end of the wire 18 to be tested is fixed on the cap 10 by the screwing action of the second abutment screw 11. Subsequently, the tensioning member can straighten the wire 18 to be tested through the cap 10.
[0071] Specifically,
[0072] The cap 10 is placed over the end of the wire 18 to be tested. The cap 10 serves as a fixing point for the end of the wire 18. By screwing in the second abutment screw 11, the end of the wire 18 is fixed to the cap 10 using its pushing force. This ensures that the end of the wire 18 will not shift during the test. The tensioner is used to straighten the wire 18 through the cap 10. The second abutment screw 11 provides sufficient clamping force to ensure the stability of the end of the wire 18 during the test, preventing the test results from being affected by the movement or vibration of the wire 18. The combined use of the tensioner and the cap 10 ensures that the wire 18 remains straight during the test, which is crucial for ensuring the accuracy of the test data.
[0073] In this embodiment, the tensioning component includes a spring 12 and a screw 13. The screw 13 is fixed to both ends of the straight edge 4. One end of the spring 12 is fixed to the screw 13, and the other end of the spring 12 is detachably connected to the cap 10.
[0074] Screws 13 are set at both ends of the straight edge 4. One end of the spring 12 can be positioned by fixing it to the screw 13. The other end of the spring 12 is connected to the cap 10, so that the tension force of the spring 12 itself can be used to straighten the wire 18 to be tested.
[0075] Specifically,
[0076] Screws 13 are installed at both ends of the straight edge 4. The screws 13 are used to fix one end of the spring 12, ensuring that the spring 12 can be stably installed on the device. One end of the spring 12 is fixed to the screw 13. The other end of the spring 12 is connected to the cap 10. The cap 10 is used to cover the end of the wire 18 to be tested. The spring 12 is connected to the end of the wire 18 through the cap 10. The tension of the spring 12 can be adjusted as needed to adapt to the straightening requirements of different wires 18.
[0077] Positioning and straightening of wire 18:
[0078] In this embodiment, a plurality of screw holes 14 are provided at both ends of the straight edge 4, and the plurality of screw holes 14 are distributed in a straight line along the extension direction of the straight edge 4. The screw 13 is detachably installed in each screw hole 14.
[0079] Since a thicker wire 18 requires a longer wire 18 length, several screw holes 14 are linearly distributed along the extension direction of the straight edge 4. Therefore, when the screw 13 is inserted into different screw holes 14, the different positions of the spring 12 can be adjusted, so that the spring 12 can tighten the wires 18 of different lengths to be tested, ensuring the straightness of each wire 18 to be tested and ensuring the test effect.
[0080] Specifically, several screw holes 14 are distributed along a straight line in the extending direction of the straight edge 4. These screw holes 14 are used for inserting the screw 13 to adjust the position of the spring 12. The screw 13 can be inserted into different screw holes 14 according to the length of the wire 18 to be tested. This design allows the screw 13 to move along the straight edge 4 to accommodate wires 18 of different lengths. By changing the position of the screw 13 on the straight edge 4, the position of the spring 12 connected to the other end of the screw 13 can be adjusted. This adjustment ensures that the spring 12 can apply appropriate tension to the wires 18 of different lengths to be tested.
[0081] By adjusting the position of spring 12, it can be ensured that test wires 18 of various lengths can be straightened, thus guaranteeing the consistency and reliability of the test results. The design of this device provides high flexibility; the operator can quickly adjust the position of spring 12 according to the specific length of the test wire 18 without replacing or reconfiguring other components. This design reduces the need for additional components.
[0082] In this embodiment, the cap 10 is provided with a hook 15, and the spring 12 or the weight 7 is hooked onto the hook 15.
[0083] By setting a hook 15 on the cap 10, it is convenient to directly hang one end of the spring 12 on the hook 15 when it is necessary to connect the spring 12, and to directly hang the weight 7 on the hook 15 when it is necessary to hang the weight 7, thus achieving convenient operation.
[0084] Specifically,
[0085] A hook 15 is provided on the cap 10 for hanging one end of the spring 12 or the weight 7. When the spring 12 needs to be connected, one end of the spring 12 is directly hung on the hook 15. This design simplifies the installation process of the spring 12, eliminating the need for additional fixing or clamping operations. When the weight 7 needs to be hung, it can also be directly hung on the same hook 15. This makes it very convenient to add or replace the weight 7 during testing. The weight 7 is selected according to the characteristics of the wire 18.
[0086] In this embodiment, the range of the arc-shaped measuring edge 3 is divided into a first range 16 and a second range 17. The first range 16 and the second range 17 are symmetrically arranged on both sides of the axis of symmetry of the semicircular protractor 2. Each range is called 0 to 90° and gradually increases from the end of the arc-shaped measuring edge 3 towards the axis of symmetry.
[0087] Since only the middle part of the wire 18 is fixed after it is released from the second positioning member 6, both ends of the wire 18 will sag. In order to read the sag at both ends of the wire 18 at the same time, the measuring range of the measuring edge is divided into a first measuring range 16 and a second measuring range 17. The first measuring range 16 and the second measuring range 17 are symmetrically arranged on both sides of the axis of symmetry of the semicircular protractor 2. Each range is called 0 to 90° and gradually increases from the end of the arc measuring edge 3 towards the axis of symmetry.
[0088] Specifically, the semicircular protractor 2 has two measuring ranges on its measuring side: a first range 16 and a second range 17. The first range 16 and the second range 17 are symmetrically positioned on either side of the axis of symmetry of the semicircular protractor 2, allowing simultaneous measurement of the sag at both ends of the wire 18. Each range ranges from 0 to 90°, covering sag measurements from perfectly vertical to perfectly horizontal. The measuring range gradually increases from the end of the curved measuring side 3 towards the axis of symmetry, facilitating the operator's reading of the sag angle of the wire 18. Using the first range 16 and the second range 17, the sag at both ends of the wire 18 can be read simultaneously, providing a symmetrical and comprehensive measurement method. The operator can directly read the readings from both ranges without the need for additional measuring tools or complex calculations.
[0089] The wire 18 hardness and softness testing device is characterized in that the base is a flat plate 19, the flat plate 19 is provided with a height adjustment screw 2013, and the height adjustment screw 2013 is used to adjust the height of the flat plate 19.
[0090] The base is set as a flat plate 19, so that the support plate 1 and the base are arranged in a T-shape, which makes it easy to place the support plate 1 vertically, and the height adjustment screw 2013 is used to adjust the height of the flat plate 19.
[0091] In this embodiment, the test components are located on both the front and back sides of the support plate 1. By setting multiple test components, multiple wires 18 can be tested simultaneously, which improves testing efficiency. More importantly, by comparing the test results of wires 18 on two test components, it is possible to determine whether there are significant errors in the test results, thus ensuring the accuracy of the test.
[0092] Specifically, by testing multiple wires 18 in parallel, the total time required to complete all tests can be significantly reduced. By comparing the test results of wires 18 on different test components, potential systematic errors or outliers can be identified. Testing multiple samples simultaneously makes quality control and consistency checks easier. Standardized testing environments and conditions reduce human error during operation.
[0093] If the results of some test components are found to deviate significantly from those of other components, error analysis should be performed to determine whether retesting or adjustment of test conditions is necessary.
[0094] Example 2
[0095] To illustrate the method of using the wire 18 hardness testing device of Example 1, the hardness test of wire 18 is performed by the following method, including the following steps:
[0096] The middle part of the wire to be tested 18 is fixed on the first positioning member 5, and the two ends of the wire to be tested 18 are respectively fixed on the second positioning member 6, so that the wire to be tested 18 extends along the straight edge 4.
[0097] The wire 18 softness and hardness testing device, which is fixed with the wire to be tested 18, is placed under extreme conditions for testing. After the test, the two ends of the wire 18 to be tested are removed from the second positioning member 6, so that the wire 18 to be tested is positioned on the first positioning member 5. The weights 7 are hung on the two ends of the wire 18 to be tested, and the drooping angle of the wire 18 is read on the semi-circular protractor. The larger the reading, the better the softness of the wire 18.
[0098] Specifically,
[0099] The middle portion of the wire 18 to be tested is fixed to the first positioning member 5, ensuring that the wire 18 can extend stably along the straight edge 4. The two ends of the wire 18 are fixed to the second positioning members 6 respectively, thus completely fixing the wire 18 and extending it along the straight edge 4. The entire testing device with the wire 18 fixed to be tested is placed under extreme conditions, such as high temperature, low temperature, humidity, or other environmental factors. After the test, the two ends of the wire 18 are removed from the second positioning members 6, so that the wire 18 is only fixed to the middle portion by the first positioning member 5. Weights 7 are hung at both ends of the wire 18. The sag angle of the wire 18 is read on a semicircular protractor. The range of the semicircular protractor should be sufficient to cover the range from 0° to 90° to measure the sag angle of the wire 18. The softness of the wire 18 is evaluated based on the read sag angle. The larger the reading, the greater the sag of the wire 18 under load, and therefore the better the softness.
[0100] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.
[0101] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.
[0102] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.
[0103] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.
[0104] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A wire hardness testing device, characterized in that, The system includes a support plate perpendicular to the horizontal plane, and a testing assembly is mounted on the support plate. The testing component includes a semicircular protractor mounted on the support plate. The semicircular protractor includes a straight side and an arc-shaped measuring side. The straight side is parallel to the horizontal plane, and the arc-shaped measuring side is close to the bottom edge of the support plate. The straight edge is provided with a first positioning element in the middle, which is used to fix the middle part of the wire to be tested; The two ends of the straight edge are respectively provided with second positioning parts for fixing and tightening the two ends of the wire to be tested; After the wire under test is subjected to extreme conditions and detached from the second positioning member, weights are hung at both ends of the wire under test to cause the wire to sag, and the semicircular protractor reads the sag of the wire under test.
2. The wire hardness testing device according to claim 1, characterized in that, The first positioning component includes a collar and a first abutting screw. The collar is fixed to the support plate, and the axis of the collar extends along the direction of the straight edge. The first abutting screw passes through the side wall of the collar and presses against the side of the wire to be tested that passes through the collar.
3. The wire hardness testing device according to claim 1, characterized in that, The second positioning component includes a cap, a second abutment screw, and a tensioning component. The cap is fitted onto the end of the wire to be tested. The second abutting screw passes through the cap and presses against the side of the wire to be tested located inside the cap. The tensioning member connects to the cap and straightens the wire to be tested along the straight edge extension direction.
4. The wire hardness testing device according to claim 3, characterized in that, The tensioning component includes a spring and a screw. The screw is fixed to both ends of the straight edge, one end of the spring is fixed to the screw, and the other end of the spring is detachably connected to the cap.
5. The wire hardness testing device according to claim 4, characterized in that, The straight edge has several screw holes at both ends, and the screw holes are distributed in a straight line along the extension direction of the straight edge. The screw can be detachably installed in each screw hole.
6. The wire hardness testing device according to claim 4, characterized in that, The cap is provided with a hook, and the spring or the weight is hooked onto the hook.
7. The wire hardness testing device according to claim 1, characterized in that, The range of the arc-shaped measuring edge is divided into a first range and a second range. The first range and the second range are symmetrically arranged on both sides of the axis of symmetry of the semicircular protractor. Each range is called 0 to 90° and gradually increases from the end of the arc-shaped measuring edge towards the axis of symmetry.
8. The wire hardness testing device according to claim 1, characterized in that, The support plate is mounted on the base, which is a flat plate, and a height adjustment screw is mounted on the flat plate.
9. The wire hardness testing device according to claim 1, characterized in that, The test components are located on the front and back of the support plate, respectively.