Non-woven fabric radial wear resistance test device

Abstract

The utility model discloses a non-woven fabric radial wear resistance test device which comprises a fixed bottom plate (01), a fixed door frame (02), a variable frequency motor assembly (03), a test turntable (04), a clamp spring (05), a steel wire screw (06), a fixed bolt (07), a flange nut (08), a fixed bracket (09), a steel round rod (10), a locking screw (11), a steel wire limiter (12), a limiter screw (13), a long steel wire (14), a weight (15) and a non-woven fabric sample (16). The non-woven fabric radial wear resistance test device has the beneficial effects that the purpose of non-woven fabric radial wear resistance test is realized through the device, so that steel wires are safer during follow-up waste storage.

Description

Technical Field

[0001] The utility model relates to a wear resistance testing device, in particular to a non-woven fabric radial wear resistance testing device, belonging to the field of non-woven fabric testing. Background Art

[0002] Non-woven fabrics are usually made into flannel tapes to wrap and secure the wiring harnesses in the vehicle and protect the wiring harnesses from catastrophic consequences such as short circuits caused by friction during the specified vehicle life cycle.

[0003] Therefore, it is necessary to establish corresponding test standards and specifications to test the wear resistance of non-woven fabrics. At present, a scratch tester is generally used for axial friction tests. During the test, a steel wire with a diameter of 0.45 mm made of spring steel is used to perform an axial surface friction test of a non-woven fabric attached to a steel round rod with a diameter of 5 mm for a reciprocating distance of 15 mm. Although this method can measure the axial wear resistance of non-woven fabrics, it is necessary to replace the test steel wire after each test. Since the steel wire is only about 10 mm long, like a thin needle, it is very troublesome to discard and store it after replacement. In addition, in the actual application of flannel tape, there is also radial friction. Therefore, it is necessary to consider the test of the radial wear resistance of non-woven fabrics. Utility Model Content

[0004] In order to solve various problems existing in the existing testing methods for non-woven fabrics, the purpose of the utility model is to provide a non-woven fabric radial wear resistance testing device. Different from the existing axial friction test, the utility model adopts clamping devices such as variable frequency motors to drive long steel wires to perform radial reciprocating friction tests on non-woven fabrics attached to steel round rods. At the same time, the device can reduce the number of times the steel wire is replaced and make the subsequent discarding and storage of the steel wire safer.

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

[0006] A non-woven fabric radial abrasion resistance test device, comprising a fixed bottom plate, a fixed gantry, a variable-frequency motor assembly, a test turntable, a circlip, a wire screw, a fixing bolt, a flange nut, a fixed bracket, a steel round bar, a locking screw, a wire limiter, a limiter screw, a long wire, a weight, and a non-woven fabric specimen; the fixed gantry is fixed above the fixed bottom plate; the main shape of the fixed gantry is "冂"-shaped, and there are fixing bolt assembly holes above; the variable-frequency motor assembly is installed on the fixed bottom plate, and its main shaft is "D"-shaped and has a circlip groove; the inner hole of the test turntable is installed on the main shaft of the variable-frequency motor assembly and has a threaded hole; the circlip adopts GB / T 894 and is installed in the circlip groove of the main shaft of the variable-frequency motor assembly; the wire screw consists of a threaded end, a wire fixing end, and a head; the fixing bolt adopts a GB / T 70.1 hexagon socket head cap screw and passes through the assembly hole above the fixed gantry; the flange nut adopts a GB / T 6177.1 hexagon flange nut and is screwed onto the fixing bolt, located between the fixed gantry and the fixed bracket; the fixed bracket is "冂"-shaped, has a fixing hole at the upper end, has fastening holes for the steel round bar and limiter screw mounting holes on both sides, and has a locking hole for the locking screw mounting on the bottom surface; after the non-woven fabric specimen is axially attached to the surface of the steel round bar, it passes through the fastening holes for the steel round bar installation on both sides of the fixed bracket, and then the locking screw is used to fix it through the locking hole for the locking screw installation on the bottom surface; the wire limiter is in the shape of a double-strip cross tube combination, has screw holes on both sides, and has two through holes in the middle. The wire limiter is located below the steel round bar and is fixed on both sides of the fixed bracket by the limiter screw through the installation hole; the lower end of the long wire is tied to the wire fixing end of the wire screw, passes through one through hole of the wire limiter from bottom to top, bypasses the steel round bar with the non-woven fabric specimen attached, and then passes through the other through hole of the wire limiter from top to bottom and is tied with the weight.

[0007] Preferably, in order to effectively fix the variable-frequency motor assembly and facilitate subsequent position adjustment, the fixed bottom plate is provided with waist-shaped holes.

[0008] Preferably, in order to ensure the stability and effectiveness of the test and facilitate recording, the variable-frequency motor assembly is a commercially standard variable-frequency right-handed motor with variable-frequency speed regulation function and counting stop function.

[0009] Preferably, in order to prevent the test turntable from rotating and displacing during the test, there are two sections of circlip grooves on the main shaft of the variable-frequency motor assembly.

[0010] Preferably, in order to prevent the wire screw from loosening during the test, the threaded end of the wire screw adopts a left-handed thread.

[0011] Preferably, in order to ensure the test effect, the steel wire fixing end of the steel wire screw is provided with an arc groove shape, the arc diameter of which is 2 mm and the depth is 1 mm.

[0012] Preferably, in order to increase the service life of the components, the long steel wire is preferably made of 65Mn, with a diameter of 0.45mm, a length of 200mm, and a hardness of less than or equal to 321HBW.

[0013] Preferably, in order to increase the service life of the component, the hardness of the wire screw is 353 HBW to 390 HBW.

[0014] Preferably, in order to increase the service life of the component, the hardness of the wire limiter is 353 HBW to 390 HBW.

[0015] Preferably, in order to prevent abnormal noise during the test, the lower ends of the two through holes provided in the middle of the wire limiter are in a trumpet shape.

[0016] In the technical solution of the utility model, the test turntable is driven to rotate by driving the variable frequency motor assembly, so that under the principle similar to the rotation of the cam and the natural gravity provided by the weights, the long steel wire is pulled to perform radial reciprocating friction with the non-woven fabric sample at a specified load under the limiting effect of the two through holes of the steel wire limiter and the guiding effect of the bell mouth, thereby achieving the purpose of the radial wear resistance test. At the same time, the device uses the long steel wire to make the subsequent discarding and storage of the steel wire safer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0018] Figure 2 It is a side and partial cross-sectional schematic diagram of the utility model.

[0019] Figure 3 It is a structural schematic diagram of a fixed bottom plate of the utility model.

[0020] Figure 4 It is a schematic diagram of the fixed door frame structure of the utility model.

[0021] Figure 5 It is a schematic diagram of the main shaft structure of the variable frequency motor component of the utility model.

[0022] Figure 6 It is a schematic diagram of the structure of the test turntable of the utility model.

[0023] Figure 7 It is a structural schematic diagram of a steel wire screw of the utility model.

[0024] Figure 8 It is a schematic diagram of the fixing bracket and the partial cross-sectional structure of the utility model.

[0025] Fig. 9 The utility model is a schematic diagram of a wire limiter and a partial cross-sectional structure.

[0026] In the figure: 01, fixed bottom plate; 0101, waist hole; 02, fixed door frame; 0201, assembly hole; 03, variable frequency motor assembly; 0301, spindle; 0302, retaining ring groove; 04, test turntable; 0401, inner hole; 0402, threaded hole; 05, retaining ring; 06, wire screw; 0601, threaded end; 0602, wire fixed end; 0602a, arc groove; 0603, head ; 07 fixing bolt; 08 flange nut; 09 fixing bracket; 0901, fixing hole; 0902, fastening hole; 0903, mounting hole; 0904, locking hole; 10 steel round bar; 11 locking screw; 12 steel wire limiter; 1201 screw hole; 1202a through hole; 1202b through hole; 1202c bell mouth; 13 limiter screw; 14 long steel wire; 15 weight; 16 non-woven fabric sample. DETAILED DESCRIPTION

[0027] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention.

[0028] Example

[0029] See also Figure 1-9, the present utility model provides a technical solution: a radial abrasion resistance test device for non-woven fabrics, including a fixed bottom plate 01, a fixed gantry 02, a variable-frequency motor assembly 03, a test turntable 04, a snap ring 05, a wire screw 06, a fixing bolt 07, a flange nut 08, a fixed bracket 09, a steel round bar 10, a locking screw 11, a wire limiter 12, a limiter screw 13, a long wire 14, a weight 15, and a non-woven fabric specimen 16. At the same time, the fixed gantry 02 is fixed above the fixed bottom plate 01; the main shape of the fixed gantry 02 is a "冂" shape, and there is a fixing bolt 07 assembly hole 0201 above; the variable-frequency motor assembly 03 is installed on the fixed bottom plate 01, and its main shaft 0301 is in the shape of a "D" and has a snap ring groove 0302; the inner hole 0401 of the test turntable 04 is installed on the main shaft 0301 of the variable-frequency motor assembly 03 and has a threaded hole 0402; the snap ring 05 uses GB / T 894 and is installed in the snap ring groove 0302 of the main shaft 0301 of the variable-frequency motor assembly 03; the wire screw 06 consists of a threaded end 0601, a wire fixing end 0602, and a head 0603; the fixing bolt 07 uses a GB / T 70.1 hexagon socket head cap screw and passes through the assembly hole 0201 above the fixed gantry 02; the flange nut 08 uses a GB / T 6177.1 hexagon flange face nut and is screwed onto the fixing bolt 07 and is located between the fixed gantry 02 and the fixed bracket 09; the fixed bracket 09 is in the shape of a "冂", has a fixing hole 0901 at the upper end, has fastening holes 0902 for installing the steel round bar 10 and limiter screw 13 installation holes 0903 on both sides, and has a locking hole 0904 for installing the locking screw 11 on the bottom surface; after the non-woven fabric specimen 16 is axially attached to the surface of the steel round bar 10, it passes through the fastening holes 0902 for installing the steel round bar 10 on both sides of the fixed bracket 09, and then the locking screw 11 is used to fix through the locking hole 0904 provided on the bottom surface for installing the locking screw 11; the wire limiter 12 is in the shape of a double-strip cross tube combination, has screw holes 1201 on both sides, and has two through holes 1202a and 1202b in the middle. The wire limiter 12 is located below the steel round bar 10 and is fixed on both sides of the fixed bracket 09 by the limiter screw 13 through the installation hole (0903); the lower end of the long wire 14 is tied to the wire fixing end 0602 of the wire screw 06, passes through one through hole 1202a of the wire limiter 12 from bottom to top, bypasses the steel round bar 10 with the non-woven fabric specimen 16 attached, and then passes through the other through hole 1202b of the wire limiter 12 from top to bottom and then ties the weight 15.

[0030] In order to effectively fix the variable-frequency motor assembly 03 and facilitate subsequent position adjustment, in this embodiment, as a preferred technical solution of the present utility model, the fixed bottom plate 01 is provided with a waist hole 0101.

[0031] In order to ensure the stability and effectiveness of the test and facilitate recording, in this embodiment, as a preferred technical solution of the utility model, the variable frequency motor component 03 is a market standard variable frequency right-rotating motor with variable frequency speed regulation function and counting stop function.

[0032] In order to prevent the test turntable 04 from rotating and displacing during the test, in this embodiment, as a preferred technical solution of the utility model, two sections of retaining ring grooves 0302 are provided on the main shaft 0301 of the variable frequency motor assembly 03.

[0033] In order to prevent the wire screw 06 from loosening during the test, in this embodiment, as a preferred technical solution of the utility model, the thread end 0601 of the wire screw 06 adopts a left-hand thread.

[0034] In order to ensure the test effect, in this embodiment, as a preferred technical solution of the utility model, the steel wire fixing end 0602 of the steel wire screw 06 is provided with a circular arc groove 0602a, the diameter of the circular arc is 2mm, and the depth is 1mm.

[0035] In order to improve the service life of components, in this embodiment, as a preferred technical solution of the utility model, the long steel wire 14 is preferably made of 65Mn, with a diameter of 0.45mm, a length of 200mm, and a hardness of less than or equal to 321HBW.

[0036] In order to increase the service life of the components, in this embodiment, as a preferred technical solution of the utility model, the hardness of the wire screw 06 is 353HBW to 390HBW.

[0037] In order to increase the service life of the components, in this embodiment, as a preferred technical solution of the utility model, the hardness of the wire limiter 12 is 353 HBW to 390 HBW.

[0038] In order to prevent abnormal noise during the test, in this embodiment, as a preferred technical solution of the utility model, the lower ends of the two through holes 1202a and 1202b provided in the middle of the wire limiter 12 are in a bell-mouth shape 1202c.

[0039] To sum up, with the help of the above-mentioned technical scheme of the utility model, when in use, the test turntable 04 is driven to rotate by driving the variable frequency motor assembly 03, so that under the natural gravity provided by the cam rotation principle and the weight 15, the long steel wire 14 is pulled to perform radial reciprocating friction with the non-woven fabric sample 16 at a specified load under the limiting effect of the through holes 1202a and 1202b of the steel wire limiter 12 and the guiding effect of the bell mouth 1202c, thereby achieving the purpose of the radial wear resistance test. At the same time, the device uses long steel wire to make the steel wire safer when it is subsequently discarded and stored.

[0040] Finally, it is necessary to supplement that: in the present invention, the variable frequency motor assembly 03 is a standard product that can be purchased on the market. Its counting variable frequency speed regulation function, counting stop function, and right rotation function are all its own functions and are not the research objects of the present invention. Therefore, its own structure and connection methods are no longer described in detail; the fixed door frame 02 is fixed on the fixed base plate 01, and its fixing method can be fastener fixing, welding or bonding fixing, as long as it is firmly connected; although the non-woven fabric sample 16 is a test object, in order to clearly and completely describe the technical solution in the embodiment of the present invention, it is listed as one of the components of the device for explanation.

[0041] The above is only a preferred implementation method of the present utility model. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the present utility model. These improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A non-woven fabric radial wear resistance test device, comprising a fixed base plate (01), a fixed door frame (02), a variable frequency motor assembly (03), a test turntable (04), a retaining spring (05), a steel wire screw (06), a fixing bolt (07), a flange nut (08), a fixing bracket (09), a steel round bar (10), a locking screw (11), a steel wire stopper (12), a stopper screw (13), a long steel wire (14), a weight (15), and a non-woven fabric sample (16), characterized in that: Above the fixed base plate (01), the fixed gantry (02) is fixed; the main shape of the fixed gantry (02) is "冂"-shaped, and an assembly hole (0201) for the fixed bolt (07) is provided above; the variable-frequency motor assembly (03) is installed on the fixed base plate (01), its main shaft (0301) is "D"-shaped, and a snap ring groove (0302) is provided; the inner hole (0401) of the test turntable (04) is installed on the main shaft (0301) of the variable-frequency motor assembly (03), and a threaded hole (0402) is provided; the snap ring (05) adopts GB / T 894 and is installed in the snap ring groove (0302) of the main shaft (0301) of the variable-frequency motor assembly (03); the wire screw (06) consists of a threaded end (0601), a wire fixing end (0602) and a head (0603); the fixed bolt (07) adopts an inner hexagonal bolt of GB / T 70.1 and passes through the assembly hole (0201) above the fixed gantry (02); the flange nut (08) adopts a hexagonal flange face nut of GB / T 6177.1 and is screwed onto the fixed bolt (07) and is located between the fixed gantry (02) and the fixed bracket (09); the fixed bracket (09) is "冂"-shaped, a fixed hole (0901) is provided at the upper end, fastening holes (0902) for the steel round bars (10) and mounting holes (0903) for the limiter screws (13) are provided on both sides, and a locking hole (0904) for mounting the locking screw (11) is provided on the bottom surface; after the non-woven fabric specimen (16) is axially attached to the surface of the steel round bar (10), it passes through the fastening holes (0902) for installing the steel round bars (10) on both sides of the fixed bracket (09), and then the locking screw (11) is used to fix through the locking hole (0904) provided on the bottom surface; the wire limiter (12) is in the shape of a double-strip cross tube, screw holes (1201) are provided on both sides, and two through holes (1202a, 1202b) are provided in the middle. The wire limiter (12) is located below the steel round bar (10) and is fixed to both sides of the fixed bracket (09) by the limiter screw (13) through the mounting hole (0903); the lower end of the long wire (14) is tied to the wire fixing end (0602) of the wire screw (06), passes through one through hole (1202a) of the wire limiter (12) from bottom to top, bypasses the steel round bar (10) with the non-woven fabric specimen (16) attached, and then passes through the other through hole (1202b) of the wire limiter (12) from top to bottom and then ties the weight (15).

2. A non-woven fabric radial wear resistance testing device according to claim 1, characterized in that: The fixed base plate (01) is provided with a waist-shaped hole (0101).

3. A non-woven fabric radial wear resistance testing device according to claim 1, characterized in that: The wire fixing end (0602) of the wire screw (06) is in the shape of an arc groove (0602a), its arc diameter is 2 mm, and the depth is 1 mm.

4. A non-woven fabric radial wear resistance test device according to claim 1, characterized in that: The material of the long wire (14) is preferably 65Mn, the diameter is 0.45 mm, the length is 200 mm, and the hardness is less than or equal to 321 HBW.

5. The non-woven fabric radial wear resistance testing device according to claim 1, characterized in that: The hardness of the wire screw (06) is 353 HBW to 390 HBW.

6. A non-woven fabric radial wear resistance test device according to claim 1, characterized in that: The hardness of the steel wire stopper (12) is 353 HBW to 390 HBW.

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