CN210690696U

CN210690696U - Radiation emission test fixture removes brace table

Info

Publication number: CN210690696U
Application number: CN201921320414.7U
Authority: CN
Inventors: 王耀华
Original assignee: Suzhou Kebiao Testing Co Ltd
Current assignee: Suzhou Kebiao Testing Co Ltd
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2020-06-05
Anticipated expiration: 2029-08-14

Abstract

The radiation emission test fixture moving support table comprises a top table (1), a conductive support table (2), a fixed seat (3), an insulating support table (4), an underframe (5) and universal wheels (6); universal wheel (6) are installed to chassis (5) bottom, and chassis (5) top surface installation pushes up platform (1), pushes up platform (1) upside concatenation installation electrically conductive brace table (2) and insulating brace table (4), electrically conductive brace table (2) upside installation fixing base (3). The reasonable optimization integration supports test user demands such as fixing and moving, satisfies the requirement of test completely, can fully embody the determinand itself and disturb little to external radiation, improves the precision of test in the at utmost, and the reflection is little, makes things convenient for the dismouting and moves, and light in weight is sturdy and durable, difficult fracture deformation, and the practicality is big, simple structure, and the low price is economical and practical.

Description

Radiation emission test fixture removes brace table

Technical Field

The utility model relates to an auxiliary device innovation structure technique of radiation emission test, especially radiation emission test fixture remove a supporting bench.

Background

The radiation emission test is an important matter of electromagnetic compatibility and is the item that the test is least likely to pass. The corresponding product standard is selected for testing radiation emission of different devices, and the measurement limit value or the test requirement of the EUT of the tested device is determined according to different device grades or classifications.

The radiation emission testing capability and the level of modification are the most intuitive factors for measuring the electromagnetic compatibility level of a laboratory. If the product is subjected to a radiation emission test, the standard is EN55032, and limit lines are tested according to the standard, wherein the X direction of the limit lines is frequency, and the Y direction is power dB. The test apparatus includes: EMI receivers, high/low frequency receiving antennas, antenna towers, test software, etc. The test environment is as follows: an anechoic chamber. The measurement distance is: refers to the distance between a point of the EUT closest to the antenna and the ground projection of the antenna center. It is divided into 3 m method and 10 m method. The height of the antenna is as follows: the height of the antenna from the ground should be varied within a specified range in order to obtain the maximum reading that would occur if the direct and reflected waves were in phase. During testing, the antenna has two states of horizontal and vertical, and the height of the antenna is changed from 1 meter to 4 meters. The frequency range is: 30MHz to 18 GHz.

In the prior art, a special supporting auxiliary device suitable for radiation emission testing is not available, a temporarily used device is inconvenient to move, a part to be tested is difficult to fix, and functions such as insulation and shielding cannot be guaranteed, so that testing is seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a radiation emission test fixture removes brace table solves the prior art problem.

The purpose of the utility model is realized by the following technical measures: comprises a top platform, a conductive support platform, a fixed seat, an insulating support platform, an underframe and a universal wheel; the universal wheel is installed to the chassis bottom, and chassis top surface installation pushes up the platform, pushes up a platform upside concatenation installation electrically conductive brace table and insulating brace table, electrically conductive brace table upside installation fixing base.

Particularly, the fixed seat is arranged in the middle of the conductive support platform.

In particular, a horizontal adjusting device is arranged on the top platform.

In particular, the insulating support platform and the conductive support platform are mounted adjacent to each other.

Particularly, an insulating strip is arranged between the insulating support platform and the conductive support platform.

In particular, the chassis is provided with a grounding structure.

In particular, the universal wheel is provided with a brake device.

The utility model discloses an advantage and effect: the reasonable optimization integration supports test user demands such as fixing and moving, satisfies the requirement of test completely, can fully embody the determinand itself and disturb little to external radiation, improves the precision of test in the at utmost, and the reflection is little, makes things convenient for the dismouting and moves, and light in weight is sturdy and durable, difficult fracture deformation, and the practicality is big, simple structure, and the low price is economical and practical.

Drawings

Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.

The reference numerals include:

the top platform 1, electrically conductive brace table 2, fixing base 3, insulating brace table 4, chassis 5, universal wheel 6.

Detailed Description

The utility model discloses a: the top platform 1, electrically conductive supporting bench 2, fixing base 3, insulating supporting bench 4, chassis 5 and universal wheel 6.

The present invention will be further explained with reference to the drawings and examples.

Example 1: as shown in the attached figure 1, universal wheels 6 are installed at the bottom end of an underframe 5, a top platform 1 is installed on the top surface of the underframe 5, a conductive support platform 2 and an insulating support platform 4 are installed on the upper side of the top platform 1 in a splicing mode, and a fixed seat 3 is installed on the upper side of the conductive support platform 2.

In the foregoing, the fixing base 3 is installed in the middle of the conductive support platform 2.

In the foregoing, the top stage 1 is provided with a leveling device.

In the foregoing, the insulating support base 4 and the conductive support base 2 are mounted adjacent to each other.

In the foregoing, the insulating strip is installed between the insulating support 4 and the conductive support 2.

In the foregoing, the chassis 5 is mounted with a grounding structure.

In the foregoing, the universal wheel 6 is provided with a brake device.

The embodiment of the utility model provides an in, the whole PP material of selecting for use 4MM thickness of top platform 1 and chassis 5, chassis 5 includes the support of table leg and desk, and top platform 1 supports the desktop. The PP material has the characteristics of small reflection, light weight, firmness, durability and difficult cracking and deformation. Meanwhile, each table leg of the bottom frame 5 is provided with an independent universal wheel 6 with adjustable height, and each universal wheel 6 has a braking and steering function.

In the embodiment of the utility model provides an in, the determinand is installed on fixing base 3. For example, a rod antenna in an automobile electronic device is used as a typical object to be tested, the distance from the rod antenna radiated to the test desk edge is 900MM, and the requirement of an automobile electronic test is met.

The embodiment of the utility model provides an in, the key step in the testing process:

1. firstly, setting the arrangement position of a movable support table of a radiation emission test fixture according to test requirements, and fixing a universal wheel 6 by a brake mechanism; placing the EUT object to be tested on a fixed seat 3 on the conductive support platform 2 according to the corresponding product standard;

2. turning on an EUT power switch, and adjusting the EUT to a normal working mode for testing;

3. setting a standard limit value and a test frequency according to an EUT product, and clicking test software to test;

4. the test is performed by using a peak detector in advance, the test result takes a quasi peak value as a standard, the quasi peak value is unqualified if the quasi peak value is larger than a standard limit value, and the quasi peak value is qualified if the quasi peak value is smaller than the standard limit value;

5. and opening the EUT to perform another working mode, and repeating the tests from 3 to 4 until the working mode of the EUT is tested. Wherein the product radiation emission is not qualified as long as one of the operating modes is not qualified.

Claims

1. The radiation emission test fixture moving support table comprises a top table (1), a conductive support table (2), a fixed seat (3), an insulating support table (4), an underframe (5) and universal wheels (6); the device is characterized in that universal wheels (6) are installed at the bottom end of an underframe (5), a top platform (1) is installed on the top surface of the underframe (5), a conductive supporting platform (2) and an insulating supporting platform (4) are installed on the upper side of the top platform (1) in a splicing mode, and a fixed seat (3) is installed on the upper side of the conductive supporting platform (2).

2. A radiation emission test tool moving support table according to claim 1, characterized in that the fixing base (3) is installed in the middle of the conductive support table (2).

3. A mobile support table for a radiation emission testing tool as claimed in claim 1, wherein the top table (1) is provided with a level adjustment device.

4. A radiation emission test tool moving support table according to claim 1, characterized in that the insulating support table (4) and the conductive support table (2) are mounted in abutment.

5. A radiation emission testing tool moving support table according to claim 1, characterized in that an insulating strip is installed between the insulating support table (4) and the conductive support table (2).

6. A mobile support table for a radiation emission testing tool as claimed in claim 1, wherein the chassis (5) is provided with a grounding structure.

7. A radiation emission test tool mobile support table according to claim 1, wherein the universal wheels (6) are provided with braking means.