Cable shielding layer performance test supporting device

Abstract

The utility model relates to the technical field of cable performance test, in particular to a cable shielding layer performance test supporting device, which comprises a central test main body and a plurality of inner insulating sleeves, the central test main body is of a columnar structure, and an inner-layer wire core of the central test main body penetrates out of two end surfaces of an outer-layer insulator; the inner diameters of the plurality of inner insulating sleeves are the same, the outer diameters of the plurality of inner insulating sleeves are sequentially increased, each inner insulating sleeve can be concentrically mounted on the central test main body in a replacement manner, and the inner insulating sleeves mounted on the central test main body are tightly attached to the central test main body. Compared with a traditional mode that a large number of cables are purchased for screening, the supporting device provided by the utility model is lower in cost, the concentricity between the tested shielding layer and the wire core is better, and the accuracy of a test result can be better ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable performance test technical field especially relates to a cable shielding layer performance test support device. BACKGROUND

[0002] With the development of high -tech such as electric automobile and aircraft, cable is also more and more in electric automobile and aircraft and other equipment, and therefore the electromagnetic shielding performance of cable is more and more important. At present, generally after purchasing cable, the shielding layer of cable is removed as the support of the shielding layer to be measured.

[0003] But because the diameter of the insulation layer on the purchased cable cannot be changed, when supporting the shielding layer to be measured, a certain gap is often left. Moreover, because the wire core structure and material of the cable are different, the cable with foam material as the insulation layer also has the problem that the shielding layer to be measured cannot be tightly compacted, and whether the gap exists between the shielding layer to be measured and the support or the support cannot tightly compact the shielding layer to be measured will have adverse effects on the final test result.

[0004] Therefore, considering that the specifications of the cables on the market are different, in order to be able to screen out the cable after removing the shielding layer, and the structure and material of the wire core meet the test requirements, only a large number of cables can be purchased, the cost is high, and the final test result cannot be guaranteed. UTILITY MODEL CONTENTS

[0005] In order to solve the above technical problems, the utility model provides a cable shielding layer performance test support device which is low in cost and can guarantee the accuracy of test results.

[0006] The utility model adopts the following technical scheme:

[0007] The utility model provides a cable shielding layer performance test support device, which comprises a center test main body and a plurality of inner insulation sleeves, the center test main body is a columnar structure, the inner layer wire core of the center test main body is arranged on the two end faces of the outer layer insulation, the inner diameters of the plurality of inner insulation sleeves are the same, but the outer diameters increase successively, each inner insulation sleeve can be concentrically replaced and installed on the center test main body, and the inner insulation sleeve installed on the center test main body is tightly attached to the center test main body.

[0008] Preferably, the inner layer wire core of the center test main body is fixedly connected with the outer layer insulation through glue.

[0009] Preferably, the inner insulation sleeve is fixed on the center test main body through a nylon screw.

[0010] Preferably, a plurality of outer insulation sleeves are further included, one inner insulation sleeve is arranged as a socket connection pipe, the inner diameters of the plurality of outer insulation sleeves are the same but the outer diameters are increased successively, each outer insulation sleeve can be concentrically replaced and arranged on the socket connection pipe, and the outer insulation sleeve arranged on the socket connection pipe is tightly fitted with the socket connection pipe.

[0011] Preferably, the outer insulation sleeve is fixed on the socket connection pipe through a nylon screw, and the socket connection pipe is fixed on the center test main body through a nylon screw.

[0012] Preferably, the inner insulation sleeve and the outer insulation sleeve are respectively equipped with ten, the outer diameters of the ten inner insulation sleeves are increased successively from 11 mm to 20 mm by 1 mm, the outer diameters of the ten outer insulation sleeves are increased successively from 21 mm to 30 mm by 1 mm, and the socket connection pipe is for the inner insulation sleeve with an outer diameter of 18 mm.

[0013] Compared with the prior art, the cable shielding layer performance test supporting device has the following beneficial effects:

[0014] The cable shielding layer performance test supporting device in the utility model is used, the inner insulation sleeve with a proper outer diameter is replaced and arranged on the center test main body, and then the measured shielding layer is sleeved on the inner insulation sleeve, compared with the traditional screening mode of a large number of purchased cables, the cost is lower, the concentricity between the measured shielding layer and the core is better, and the accuracy of the test result can be ensured better. In addition, the inner insulation sleeves with various diameters can also adapt to the test requirements of shielding layers with different inner diameters, and the test is convenient and fast. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the use state schematic view of the cable shielding layer performance test supporting device in the utility model embodiment.

[0016] Figure 2 It is the sectional view of the cable shielding layer performance test supporting device in the utility model embodiment when in use.

[0017] Figure 3 It is the sectional view of the center test main body of the cable shielding layer performance test supporting device in the utility model embodiment.

[0018] Figure 4 It is the test state schematic view of the measured shielding layer in the utility model embodiment.

[0019] Among them, the sign explanation is as follows:

[0020] 1, center test main body 4, outer insulation sleeve

[0021] 101, inner core 5, outer coaxial system

[0022] 102 outer insulating layer 6, inner shielding system

[0023] 2 inner insulating sleeve 7 signal generator

[0024] 3 shielding layer to be measured 8 signal receiver DETAILED DESCRIPTION

[0025] The specific embodiments of the present application will be further described in detail below with reference to the accompanying drawings. These embodiments are only used to illustrate the present application, and are not a limitation on the present application.

[0026] In the description of the present application, it should be pointed out that the orientations or positional relationships indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation on the devices or elements indicated, which must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0027] In the description of the present application, it should be pointed out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication between two elements inside. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0028] In addition, in the description of the present application, unless otherwise specified, the meaning of "multiple" is two or more.

[0029] Referring to Figures 1 to 3 , the embodiment provides a kind of cable shielding layer performance test support device, including center test main body 1 and multiple inner insulating sleeves 2, center test main body 1 is columnar structure, the inner layer wire core 101 of center test main body 1 is arranged at the both ends of outer insulating layer 102, the inner diameter of multiple inner insulating sleeves 2 is same but outer diameter increases gradually, each inner insulating sleeve 2 can be concentrically replaced and installed on center test main body 1, and the inner insulating sleeve 2 installed on center test main body 1 is closely combined with center test main body 1.

[0030] The cable shielding layer performance test support device of the embodiment can be used by replacing the inner insulation sleeve 2 with a proper outer diameter and installing it on the center test main body 1, and then sleeving the measured shielding layer 3 on the inner insulation sleeve 2. Compared with the traditional way of purchasing a large number of cables for screening, the cost is lower, and the concentricity between the measured shielding layer 3 and the core is better, which can better ensure the accuracy of the test results. In addition, the inner insulation sleeve 2 with various outer diameters can also adapt to the test requirements of shielding layers with different inner diameters, and the test is convenient and fast.

[0031] Preferably, in the embodiment, the inner layer core 101 of the center test main body 1 penetrates the two end faces of the outer layer insulation 102 by 5 mm.

[0032] Preferably, the inner layer core 101 of the center test main body 1 is fixed by glue and the outer layer insulation 102 to ensure that the center test main body 1 is firm and stable during the test.

[0033] Preferably, the inner insulation sleeve 2 is fixed on the center test main body 1 by nylon screws, thereby stably fixing the inner insulation sleeve 2 while ensuring insulation.

[0034] Preferably, referring to Figure 1 and Figure 2 The cable shielding layer performance test support device of the embodiment further comprises a plurality of outer insulation sleeves 4, one inner insulation sleeve 2 as a sleeve connection pipe, the inner diameters of the plurality of outer insulation sleeves 4 are the same but the outer diameters increase successively, each outer insulation sleeve 4 can be concentrically installed on the sleeve connection pipe, and the outer insulation sleeve 4 installed on the sleeve connection pipe is tightly fitted with the sleeve connection pipe. Compared with directly sleeving a single insulation sleeve on the center test main body 1, the sleeve connection of the outer insulation sleeve 4 and the inner insulation sleeve 2 can reduce the self-weight of the large-diameter insulation sleeve and save material and processing costs.

[0035] Preferably, the outer insulation sleeve 4 is fixed on the sleeve connection pipe by nylon screws, and the sleeve connection pipe is fixed on the center test main body 1 by nylon screws, thereby stably fixing the outer insulation sleeve 4 and the sleeve connection pipe while ensuring insulation.

[0036] Preferably, the inner insulation sleeve 2 and the outer insulation sleeve 4 are respectively provided with ten, the outer diameters of the ten inner insulation sleeves 2 increase from 11 mm by 1 mm to 20 mm, the outer diameters of the ten outer insulation sleeves 4 increase from 21 mm by 1 mm to 30 mm, and the sleeve connection pipe is the inner insulation sleeve 2 with an outer diameter of 18 mm.

[0037] In actual use, if the inner diameter of the measured shielding layer 3 is less than 20mm, the inner insulating sleeve 2 with a corresponding outer diameter size is directly sleeved on the center test body 1, and then the measured shielding layer 3 is installed on the inner insulating sleeve 2; if the inner diameter of the measured shielding layer 3 exceeds 20mm, the inner insulating sleeve 2 with an outer diameter of 18mm is sleeved on the center test body 1, then the outer insulating sleeve 4 with a corresponding outer diameter size is sleeved on the inner insulating sleeve 2, and finally the measured shielding layer 3 is installed on the outer insulating sleeve 4.

[0038] Referring to Figure 4 After the installation of the measured shielding layer 3 on the cable shielding layer performance test support device of the embodiment is completed, the measured shielding layer 3 is installed in the electromagnetic compatibility test equipment for testing, the measured shielding layer 3 is installed in the outer coaxial system 5 and the inner shielding system 6 of the electromagnetic compatibility test equipment, the inner layer core 101 of the center test body 1 is connected to the signal generator 7 and the signal receiver 8, and the semi-circular pressing block is arranged between the outer coaxial system 5 and the measured shielding layer 3 and between the inner shielding system 6 and the measured shielding layer 3, so that the measured shielding layer 3 is tightly attached to the inner insulating sleeve 2 or the outer insulating sleeve 4, and the test signal is prevented from leaking to the outside of the test system.

[0039] In summary, compared with the traditional way of screening a large number of purchased cables, the cable shielding layer performance test support device of the embodiment can assist the electromagnetic compatibility test equipment in testing the shielding layer with an inner diameter of 11mm-30mm, and can ensure that the test effect of the shielding layer is consistent with the actual use.

[0040] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled persons in the technical field, some improvements and replacements can be made without departing from the technical principles of the present application, and these improvements and replacements should also be considered as the protection scope of the present application.

Claims

1. A cable shield performance test support apparatus, characterized by, The utility model provides a center test body (1) and a plurality of inner insulation sleeve (2) are included, the center test body (1) is the columnar structure, the inner layer wire core (101) of center test body (1) is arranged to the both ends of outer layer insulation (102) and is passed out, a plurality of inner insulation sleeve (2) is same in internal diameter but gradually increases in external diameter, each inner insulation sleeve (2) can be concentrically replaced and installed on the center test body (1), and the inner insulation sleeve (2) installed on the center test body (1) is closely combined with the center test body (1).

2. The cable shield performance test support apparatus of claim 1, wherein, The inner layer wire core (101) of the center test body (1) is fixed by adhesive.

3. The cable shield performance test support apparatus of claim 1, wherein, The inner insulation sleeve (2) is fixed on the center test body (1) by nylon screw.

4. The cable shield performance test support apparatus of claim 1, wherein, It also includes a plurality of outer insulation sleeve (4), one inner insulation sleeve (2) is used as a sleeve connection pipe, a plurality of outer insulation sleeve (4) is same in internal diameter but gradually increases in external diameter, each outer insulation sleeve (4) can be concentrically replaced and installed on the sleeve connection pipe, and the outer insulation sleeve (4) installed on the sleeve connection pipe is closely combined with the sleeve connection pipe.

5. The cable shield performance test support apparatus of claim 4, wherein, The outer insulation sleeve (4) is fixed on the sleeve connection pipe by nylon screw, and the sleeve connection pipe is fixed on the center test body (1) by nylon screw.

6. The cable shield performance test support apparatus of claim 4, wherein, The inner insulation sleeve (2) and the outer insulation sleeve (4) are respectively equipped with ten, the external diameter of ten inner insulation sleeve (2) starts from 11mm and increases to 20mm according to 1mm difference, the external diameter of ten outer insulation sleeve (4) starts from 21mm and increases to 30mm according to 1mm difference, and the sleeve connection pipe is the inner insulation sleeve (2) with external diameter 18mm.

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