CN214102212U

CN214102212U - Shielding box for broadband carrier test

Info

Publication number: CN214102212U
Application number: CN202023348230.7U
Authority: CN
Inventors: 王岳平; 代智慧; 周伟波; 石金保
Original assignee: Holley Technology Co Ltd
Current assignee: Holley Technology Co Ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-08-31
Anticipated expiration: 2030-12-31

Abstract

The utility model discloses a shielded cell for broadband carrier test. The problem that space radiation is not considered in the conventional HPLC detection equipment, accurate measurement of the equipment is influenced, and the method is not suitable for quantitative analysis of broadband carrier communication is solved. The shielding case comprises a metal shell, a supporting plate which divides the shell into a front part and a rear part is arranged in the shell, a contact pin assembly is fixed on one surface of the front part of the supporting plate, a concentrator is inserted in the contact pin assembly and fixed through a movable pressing mechanism, a coupling/isolating device is arranged in the rear part, an interface assembly is arranged on the side wall of the rear part, and the coupling/isolating device and the contact pin assembly are respectively connected with the interface assembly. The concentrator and the coupling/isolating device are integrally installed in the shell to carry out integral signal shielding and prevent the leakage of equipment signal space or the radiation of the external space through the signal line. Compact structure is reasonable, and the dismouting of being convenient for is suitable for multiple signal concentrator.

Description

Shielding box for broadband carrier test

Technical Field

The utility model belongs to the technical field of the meter technique and specifically relates to a shielded cell for broadband carrier test is related to.

Background

At present, the arrival of HPLC modules of companies of various provinces exceeds 8800 ten thousand, wherein the arrival of the HPLC modules is more than 2800 ten thousand according to the list, the arrival of the HPLC modules is more than 6000 ten thousand individually, the number of the operated HPLC modules exceeds 5000 ten thousand, and 2421 ten thousand HPLC deepened applications are realized in the upgrading and modifying work of the HPLC deepened application functions of the concentrator. Therefore, the electricity utilization information acquisition system enables the concentrator, the collector, the single-phase intelligent meter, the three-phase intelligent meter and other equipment to form a large-scale networking network through HPLC. The various devices are detected independently before being accessed into the network, but faults affecting communication performance, such as district identification, automatic file synchronization, routing optimization and the like, occur in field operation due to insufficient matching performance among the devices after networking.

Aiming at networking matching, the detection equipment with strict HPLC communication performance is lacked, the existing detection system considers less space radiation caused by HPLC high-frequency characteristics, and the accurate measurement and detection of the equipment are influenced by radiation signal crosstalk, so that the detection system is not suitable for quantitative analysis and detection of broadband carrier communication. When a conventional test table body tests networking characteristics of a module, signals are theoretically required to be transmitted according to a coupling/isolation-attenuation-coupling/isolation way, but because space radiation exists in broadband carriers, even signal radiation exists within 50cm, when equipment is hung on the same test table body, due to the fact that the distance is short, the signals directly pass through the space radiation, and attenuation failure is caused. The signal passes around the transmission that controls signal attenuation, directly from spatial diffraction, until communication is still possible even if the channel attenuation is at a maximum.

Disclosure of Invention

The utility model discloses solve and have not considered the space radiation to HPLC check out test set now, can influence the accurate measurement of equipment, be not suitable for carry out quantitative analysis's problem to broadband carrier communication, provide a shielded cell for broadband carrier test.

The utility model discloses it is unreasonable still to have solved current this side structure, and is bulky, and the inconvenient problem of installation dismantlement provides a shielded cell for broadband carrier test.

The above technical problem of the present invention can be solved by the following technical solutions: the utility model provides a shielded cell for broadband carrier test, includes the metal casing, is provided with the backup pad that divides into front and back two with the casing in the casing, is fixed with the contact pin subassembly in the one side that the backup pad is located the front, and the concentrator is pegged graft on the contact pin subassembly to it is fixed through movable hold-down mechanism, is provided with coupling/isolating device in the rear portion, is provided with interface module on the lateral wall at rear portion, and coupling/isolating device, contact pin subassembly are connected with interface module respectively. The utility model discloses well concentrator and coupling/isolating device an organic whole are installed in the casing, carry out whole signal shielding, prevent that equipment signal space from revealing or passing through the signal line to outer space radiation. The concentrator is connected with the external intelligent electric meter, the collector and the PC through the interface assembly, and normal communication between the concentrator and the external intelligent electric meter, the collector and the PC is realized. The shell is made of a stainless steel plate.

Preferably, the supporting plate is inclined from top to bottom towards the front. According to the scheme, the supporting plate is obliquely arranged, the upper end of the supporting plate is fixed to the upper portion of the shell, and the lower end of the supporting plate is fixed to the bottom of the shell. The front part forms a space with a wide upper part and a narrow lower part, and the concentrator is obliquely arranged on the supporting plate. The rear portion forms a space narrow at the top and wide at the bottom, and the coupling/isolating means is installed at a position lower than the rear portion. The structure of the scheme ensures that the whole volume of the shielding box is smaller while the concentrator and the coupling/isolating device are installed.

As a preferred scheme, be provided with the activity hold-down mechanism of fixed concentrator in the backup pad, activity hold-down mechanism includes briquetting and guide part, the briquetting includes curved pressure strip, is provided with the deflector respectively in pressure strip both sides, the guide part includes a pair of direction slot hole of seting up in the backup pad, is provided with the layer board along the direction slot hole on the backup pad back, forms the guide way between layer board and the backup pad, is provided with a plurality of fixed orificess in the backup pad of guide way position, is provided with fixing bolt on the fixed orifices, the direction slot hole is passed to the pressure strip both sides, and the deflector pegs graft in the guide way. This scheme activity hold-down mechanism's briquetting can slide along the guide way to the concentrator of the different model sizes of cooperation also makes the briquetting and backup pad integrative simultaneously, and the briquetting can not lose. The upper portion of the concentrator is inserted into a pressing plate of the pressing block, the position of the pressing block is adjusted through sliding the pressing block, the fixing bolt is screwed on the corresponding fixing hole after the pressing block is adjusted in place, and the guide plate is fixed in the guide groove, so that the pressing block is integrally fixed on the supporting plate.

As a preferred scheme, the interface component includes a power interface, an ethernet interface and a communication interface, the power interface is connected with the coupling/isolating device, the ethernet interface is connected with the concentrator, the communication interface is a DB9 interface, and the communication interfaces are respectively connected with an RS232 interface and two RS485 interfaces of the concentrator. The scheme specially designs an interface component connection mode to realize the connection of the interface component with the concentrator and the coupling/isolating device. The power interface is connected with an external power supply, the RS232 interface of the concentrator and the two RS485 interfaces are combined into a DB9 interface, and the Ethernet interface is connected with the Ethernet. In view of the influence of the holes on the shielding effectiveness of the shielding box, the holes are well arranged, and then the CST software is used for simulating the shielding effectiveness, so that the holes with excellent shielding effectiveness can be arranged. The communication interface and the power interface are both interface universal parts processed by filtering, and the size, shape and size of the opening of the interface universal parts are obtained by simulating the shielding effectiveness according to CST software.

As a preferred scheme, a heat dissipation opening is formed in the side wall of the rear portion, and a fan is mounted on the heat dissipation opening. In order to increase the heat dissipation effect of the shielding box, the heat is dissipated by installing a fan on the side wall of the rear part of the housing. In view of the influence of the heat dissipation port on the shielding effectiveness of the shielding box, the CST software simulates the shielding effectiveness after the holes are well arranged, and the holes with excellent shielding effectiveness can be arranged.

As a preferred scheme, a plurality of fixing ribs are buckled on the coupling/isolating device, and two ends of each fixing rib are fixed with the side surface of the shell to fix the coupling/isolating device. In the scheme, the coupling/isolating device is fixed on the shell in a binding type installation mode. Simple structure and convenient installation.

Preferably, a spacer is arranged between the coupling/isolating device and the housing side. And the buffer function is realized on the coupling/isolating device.

As a preferred scheme, the inner side surface of the shell is provided with wave-absorbing cotton. The wave absorbing cotton is arranged on all the large surfaces in the shielding box and the joints between the surfaces, so that the shielding effect is enhanced and leakage is prevented.

As a preferred scheme, the casing includes both ends open-ended casing main part, is provided with the back shell board on the casing main part rear end opening, and the back shell board is fixed with the casing main part through a plurality of screws, and casing main part front end opening is the slope opening with backup pad matched with, is provided with the cap on the slope opening, and the cap is the triangle-shaped, and the cap constitutes square whole with the casing main part jointly, and the cap upper end is articulated mutually with the casing main part, and the cap lower extreme passes through buckle mechanism and is connected with the casing main part. The back coverboard is connected on casing main part rear end opening in this scheme, through the fix with screw between back coverboard and the casing main part, and the screw is many and close, has effectively guaranteed the shielding effect that casing main part and back coverboard are connected. The front end opening of the shell body is an inclined opening which is matched with an inclined support plate, and the shell cover is triangular and buckled on the inclined opening to form a square whole together with the shell body.

As a preferred scheme, the casing includes both ends open-ended casing main part, is provided with the back shell board on the casing main part rear end opening, and the back shell board is fixed with the casing main part through a plurality of screws, is provided with the door plant on the casing main part front end opening, and door plant one side articulates on the casing main part, and the door plant opposite side passes through buckle mechanism and is connected with the casing main part. The casing main part is the cylindricality barrel in this scheme, and the back coverboard is connected on casing main part rear end opening, passes through the fix with screw between back coverboard and the casing main part, and the screw is many and close, has effectively guaranteed the shielding effect that casing main part and back coverboard are connected.

Therefore, the utility model has the advantages that:

1. the concentrator and the coupling/isolating device are integrally installed in the shell to carry out integral signal shielding and prevent the leakage of equipment signal space or the radiation of the external space through the signal line.

2. The support plate tilting structure allows for mounting of the concentrator and the coupling/isolation device while also allowing for a smaller overall volume of the shielding cage.

3. The backup pad can easy to assemble and dismantle, is convenient for maintain and change casing internal component. Hold-down mechanism's briquetting can slide along the guide way to the concentrator of cooperation different models size also makes the briquetting and backup pad as an organic whole simultaneously, and the briquetting can not lose.

Drawings

Fig. 1 is a perspective schematic view of the present invention;

fig. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic view of the concentrator of the present invention mounted on a support plate;

fig. 4 is a schematic cross-sectional view of the movable pressing mechanism of the present invention;

fig. 5 is another structural schematic diagram of the housing of the present invention.

1-shell 2-supporting plate 3-pin component 4-coupling/isolating device 5-concentrator 6-briquetting 7-pressure strip 8-guide plate 9-guide long hole 10-supporting plate 11-fixing hole 12-power interface 13-Ethernet interface 14-communication interface 15-fan 16-rib 17-rear shell plate 18-door plate 19-shell cover.

Detailed Description

The technical solution of the present invention is further specifically described below by way of examples and with reference to the accompanying drawings.

Example (b):

a shielding box for broadband carrier test, as shown in figure 1, comprises a metal shell 1, a supporting plate 2 which divides the shell into a front part and a rear part is arranged in the shell, a contact pin component 3 is fixed on one surface of the supporting plate positioned at the front part, a concentrator is inserted on the contact pin component and is fixed through a movable pressing mechanism, a coupling/isolating device 4 is arranged in the rear part, an interface component is arranged on the side wall of the rear part, and the coupling/isolating device and the contact pin component are respectively connected with the interface component.

As shown in fig. 2, the casing includes a casing main body with openings at both ends, a rear casing plate 28 is arranged on the opening at the rear end of the casing main body, the rear casing plate is fixed with the casing main body through a plurality of screws, a door plate 29 is arranged on the opening at the front end of the casing main body, one side of the door plate is hinged on the casing main body, and the other side of the door plate is connected with the casing main body through a buckle mechanism. The door plate is provided with a handle. In order to effectively shield the space radiation of broadband carrier signals, the shell, the rear shell plate and the door plate are all made of stainless steel plates, and wave-absorbing cotton is arranged on all large surfaces in the shell and on the joints between the surfaces to enhance the shielding effect and prevent leakage. In addition, the housing has another structure, as shown in fig. 5, the front opening of the housing main body is an inclined opening matched with the support plate 2, a housing cover 19 is arranged on the inclined opening, the housing cover is triangular, the housing cover and the housing main body jointly form a square whole, the upper end of the housing cover is hinged with the housing main body, and the lower end of the housing cover is connected with the housing main body through a buckling mechanism.

The support plate 2 is inclined from top to bottom towards the front. The supporting plate is obliquely arranged, the front part of the supporting plate forms a space which is wide at the top and narrow at the bottom, and the concentrator is obliquely arranged on the supporting plate. The rear portion forms a space narrow at the top and wide at the bottom, and the coupling/isolating means is installed at a position lower than the rear portion. The coupling/isolating device is provided with a plurality of fixing ribs 16, and two ends of the fixing ribs are fixed with the side surface of the shell to fix the coupling/isolating device. And a cushion block is arranged between the coupling/isolating device and the side surface of the shell.

Be provided with the activity hold-down mechanism of fixed concentrator in backup pad 2, as shown in fig. 3 and fig. 4, activity hold-down mechanism includes briquetting 6 and guide part, the briquetting includes curved pressure strip 7, be provided with deflector 8 respectively in pressure strip both sides, the guide part includes a pair of direction slot hole 9 of seting up in the backup pad, be provided with layer board 10 along the direction slot hole on the backup pad back, form the guide way between layer board and the backup pad, be provided with a plurality of fixed orificess 11 in the backup pad of guide way position, be provided with fixing bolt on the fixed orifices, the direction slot hole is passed to the pressure strip both sides, the deflector is pegged graft in the guide way. The pressing block of the movable pressing mechanism can slide along the guide groove to be matched with concentrators of different models and sizes.

As shown in fig. 2, the interface assembly includes a power interface 12, an ethernet interface 13 and a communication interface 14, the power interface is connected to the coupling/isolating device, the ethernet interface is connected to the concentrator, the communication interface is a DB9 interface, and the communication interfaces are respectively connected to an RS232 interface and two RS485 interfaces of the concentrator. In view of the influence of the holes on the shielding effectiveness of the shielding box, the holes are well arranged, and then the CST software is used for simulating the shielding effectiveness, so that the holes with excellent shielding effectiveness can be arranged. The communication interface and the power interface are both interface universal parts processed by filtering, and the size, shape and size of the opening of the interface universal parts are obtained by simulating the shielding effectiveness according to CST software.

In order to increase the heat dissipation effect of the shielding box, a heat dissipation port is formed in the side wall of the rear portion, a fan 15 is mounted on the heat dissipation port, and the shape, size and position of the heat dissipation port simulate the shielding effect according to CST software.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although terms such as housing, support plate, pin assembly, coupling/isolating means, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. A shielded box for broadband carrier test, its characterized in that: the concentrator comprises a metal shell (1), wherein a supporting plate (2) which divides the shell into a front part and a rear part is arranged in the shell, a contact pin assembly (3) is fixed on one surface of the supporting plate positioned at the front part, the concentrator is inserted into the contact pin assembly and is fixed through a movable pressing mechanism, a coupling/isolating device (4) is arranged in the rear part, an interface assembly is arranged on the side wall of the rear part, and the coupling/isolating device and the contact pin assembly are respectively connected with the interface assembly.

2. The shielding box for broadband carrier testing according to claim 1, wherein said supporting plate (2) is inclined from top to bottom towards the front.

3. The shielding box for the broadband carrier test according to claim 1 or 2, wherein a movable pressing mechanism for fixing the concentrator is arranged on the supporting plate (2), the movable pressing mechanism comprises a pressing block (6) and a guide part, the pressing block comprises an arc-shaped pressing plate (7), guide plates (8) are respectively arranged on two sides of the pressing plate, the guide part comprises a pair of guide long holes (9) formed in the supporting plate, a supporting plate (10) is arranged on the back surface of the supporting plate along the guide long holes, a guide groove is formed between the supporting plate and the supporting plate, a plurality of fixing holes (11) are formed in the supporting plate at the position of the guide groove, fixing bolts are arranged on the fixing holes, two sides of the pressing plate penetrate through the guide long holes, and the guide plates are inserted into the guide grooves.

4. The shielding box for the broadband carrier test according to claim 1 or 2, wherein the interface assembly comprises a power interface (12), an ethernet interface (13) and a communication interface (14), the power interface is connected with the coupling/isolating device, the ethernet interface is connected with the concentrator, the communication interface is a DB9 interface, and the communication interfaces are respectively connected with an RS232 interface and two RS485 interfaces of the concentrator.

5. The shielding box for the broadband carrier test according to claim 1 or 2, wherein a heat dissipation port is formed on the side wall of the rear part, and a fan (15) is installed on the heat dissipation port.

6. The shielding box for testing the broadband carrier according to claim 1 or 2, wherein a plurality of fixing ribs (16) are buckled on the coupling/isolating device, and two ends of each fixing rib are fixed with the side surface of the shell to fix the coupling/isolating device.

7. The shielded enclosure of claim 6, wherein spacers are positioned between the coupling/isolation device and the sides of the housing.

8. The shielding box for the broadband carrier test according to claim 1 or 2, characterized in that wave-absorbing cotton is arranged on the inner side surface of the shell (1).

9. The shielding box for broadband carrier testing according to claim 2, wherein the housing (1) comprises a housing body with two open ends, a rear shell plate (17) is disposed on the opening at the rear end of the housing body, the rear shell plate is fixed to the housing body by a plurality of screws, the opening at the front end of the housing body is an inclined opening matched with the supporting plate (2), a housing cover (19) is disposed on the inclined opening, the housing cover is triangular, the housing cover and the housing body together form a square whole, the upper end of the housing cover is hinged to the housing body, and the lower end of the housing cover is connected to the housing body by a fastening mechanism.

10. The shielding box for the broadband carrier test according to claim 2, wherein the housing (1) comprises a housing body with two open ends, a rear shell plate (17) is arranged on the open end of the rear end of the housing body, the rear shell plate is fixed with the housing body through a plurality of screws, a door plate (18) is arranged on the open end of the front end of the housing body, one side of the door plate is hinged on the housing body, and the other side of the door plate is connected with the housing body through a buckling mechanism.