Lighting hoist system for anechoic chamber and anechoic chamber

Abstract

The utility model provides a kind of lighting lifting system and wave anechoic chamber for wave anechoic chamber, including lifter main body, lifting portion and distribution box, lifting portion is connected in the bottom of lifter main body portion, the bottom of lifting portion installs lighting fixture;Lifter main body is internally provided with mains module and remote control module, the input end of mains module is connected lighting lamp power supply by distribution box inside first circuit breaker switch, the output end of mains module is electrically connected with lighting fixture;The input end of remote control module is connected remote control module power supply by distribution box inside second circuit breaker switch, the output end of remote control module is electrically connected with the lifting motor that lifter body has.The utility model separates the power supply of remote control module and lighting lamp power supply, then specially sets a circuit breaker switch, when lighting lamp normal use, the power supply of remote control module is disconnected, solve the problem that normal EMC test is interfered due to electromagnetic emission under the power supply condition of remote control module.

Description

Technical Field

[0001] This utility model relates to the field of EMC testing technology, specifically to a lighting lifting system for an anechoic chamber and an anechoic chamber. Background Technology

[0002] EMC testing anechoic chambers require a lighting system, with halogen lamps and LED lamps being the two main types of lights. Since anechoic chambers are typically quite high, erecting scaffolding or ladders poses safety hazards and is inconvenient when lamps need replacement or repair.

[0003] To address these issues, lighting fixtures are typically installed on a lifting system. When maintenance is needed, the fixture can be lowered to ground level, allowing maintenance personnel to work from the ground and avoiding high-altitude operations. This lifting system has two modes: wired connection control and remote control. The wired connection mode requires complex interlocking controls for safety; the remote control mode is simpler, requiring no complex interlocking circuits, and can be operated directly with a remote control. However, using the remote control can introduce background noise that can interfere with normal EMC testing. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of this utility model is to provide a lighting lifting system for an anechoic chamber and an anechoic chamber.

[0005] The lighting lifting system for an anechoic chamber provided by this utility model includes a lifting body, a lifting part, and a power distribution box. The lifting part is connected to the bottom of the lifting body via a lifting cable, and the bottom of the lifting part is used to install lighting fixtures.

[0006] The main body of the lifting device is equipped with a main power module and a remote control module. The input end of the main power module is connected to the power supply of the lighting lamp through the first circuit breaker switch inside the distribution box. The output end of the main power module is electrically connected to the lighting lamp to supply power to the lighting lamp.

[0007] The input terminal of the remote control module is connected to the power supply of the remote control module through the second circuit breaker switch inside the distribution box, and the output terminal of the remote control module is electrically connected to the lifting motor of the lifting body to control the lifting motor to lift.

[0008] Preferably, the side of the lifting device body is provided with a lighting power cord connector and a lifting control cord connector, the remote control module is connected to the lifting control cord connector via a line, and the lifting control cord connector is connected to the second circuit breaker switch via the lifting control line;

[0009] The lighting power cord connector is connected to the first circuit breaker switch via the lighting power cord. The bottom of the lifting body is provided with a lighting power upper contact, which is connected to the lighting power cord connector via a line.

[0010] The top of the lifting part is provided with a lower contact of the lighting power supply corresponding to the upper contact of the lighting power supply, and the lower contact of the lighting power supply is connected to the lighting fixture through a circuit;

[0011] When the lifting motor rises to its position, the upper contact of the lighting power supply contacts the lower contact of the lighting power supply, and the lighting fixture is connected to the power supply of the lighting lamp. When the lifting part descends, the upper contact of the lighting power supply disengages from the lower contact of the lighting power supply, and the circuit between the lighting fixture and the power supply of the lighting lamp is broken.

[0012] Preferably, the lifting device body includes a fixed bracket, a main chassis, and a safety cover, wherein the safety cover is installed on the top of the main chassis;

[0013] The fixed bracket is fixedly installed on the top of the safety cover, the lighting power cord connector and the lifting control cord connector are located on the side of the safety cover, and the lighting power contact is located at the bottom of the main chassis.

[0014] Preferably, the lifting section includes a bottom connecting tray, and the lower contact of the lighting power supply is located at the top of the bottom connecting tray.

[0015] Preferably, the bottom of the bottom connecting tray is equipped with a lamp connecting hook for suspending lighting fixtures.

[0016] Preferably, there are two lighting power cord connectors, which are respectively connected to the first circuit breaker switch via the first lighting power cord and the second lighting power cord;

[0017] The contacts on the lighting power supply are connected to the first lighting power supply line and the second lighting power supply line respectively through the circuit. The bottom of the lifting part is provided with a third lighting power supply line and a fourth lighting power supply line, which correspond to the first lighting power supply line and the second lighting power supply line respectively.

[0018] Both ends of the third lighting power line and both ends of the fourth lighting power line are connected to the lighting fixture and the lower contact of the lighting power supply.

[0019] Preferably, the fixing bracket is U-shaped, and both ends of the U-shaped fixing bracket are fixedly connected to the two sides of the safety cover by bracket fixing screws.

[0020] Preferably, there are two lifting cables, which are arranged in parallel.

[0021] Preferably, both the upper and lower contacts of the lighting power supply are cylindrical contacts.

[0022] The anechoic chamber provided by this utility model includes the lighting lifting system for the anechoic chamber, wherein the lifting body is fixedly installed below the top ventilation opening of the anechoic chamber.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] This invention separates the power supply of the remote control module from the power supply of the lighting fixture. A circuit breaker switch is specially installed for the remote control module in the ground distribution box. When the lighting fixture is in normal use, the power supply of the remote control module is disconnected. When EMC testing is not required, the power supply is turned on again, thereby enabling the lighting fixture to be lowered for maintenance. This solves the problem of normal EMC testing due to electromagnetic interference when the remote control module is powered. Attached Figure Description

[0025] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0026] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0027] Figure 2 This is a schematic diagram of the assembly of the present invention with a lighting lamp;

[0028] Figure 3 This is a schematic diagram of the circuit principle of this utility model.

[0029] The diagram shows:

[0030] Fixed bracket 1, fourth lighting power cord 9

[0031] First lighting power cord 2, bottom connection tray 10

[0032] Second lighting power supply line 3, lifting cable 11

[0033] Lifting control line 4 Main chassis 12

[0034] Lighting power supply contact 5, bracket fixing screw 13

[0035] Lighting power supply lower contact 6, safety protection cover 14

[0036] Third lighting power supply line 7 Lighting fixtures 15

[0037] Light fixture connection hook 8 Detailed Implementation

[0038] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0039] This utility model discloses a lighting lifting system for an anechoic chamber and an anechoic chamber. By routing the power supply of the remote control module separately from the power supply of the lighting lamp, and by setting a dedicated circuit breaker switch for the remote control module in the ground distribution box, the power supply of the remote control module is disconnected during normal use of the lighting lamp, and is turned on again when EMC testing is not required, thereby enabling the lighting lamp to be lowered for maintenance. This solves the problem of normal EMC testing due to electromagnetic interference when the remote control module is powered.

[0040] According to the lighting lifting system for an anechoic chamber provided by this utility model, such as Figures 1-3 As shown, the device includes a lifting body, a lifting section, and a distribution box. The lifting section is connected to the bottom of the lifting body via a lifting cable 11, and the bottom of the lifting section is used to install a lighting fixture 15. The lifting body houses a main power module and a remote control module. The input of the main power module is connected to the lighting fixture's power supply via a first circuit breaker switch inside the distribution box, and the output of the main power module is electrically connected to the lighting fixture 15 to supply power. The input of the remote control module is connected to the remote control module's power supply via a second circuit breaker switch inside the distribution box, and the output of the remote control module is electrically connected to the lifting motor of the lifting body to control the lifting motor's movement. This invention completely isolates the power supply circuit of the remote control module from the power supply circuit of the lighting fixture 15. During EMS testing, the power supply to the remote control module can be cut off, and when maintenance descent is required, the power supply to the remote control module can be turned on again, thus avoiding electromagnetic interference during normal EMC testing.

[0041] In a preferred example, such as Figure 1As shown, the side of the lifting unit body is equipped with a lighting power cord connector and a lifting control cord connector. The remote control module is connected to the lifting control cord connector via a circuit. The lifting control cord connector is connected to the second circuit breaker switch via the lifting control line 4. The lighting power cord connector is connected to the first circuit breaker switch via a lighting power cord. The bottom of the lifting unit body is equipped with a lighting power upper contact 5, which is connected to the lighting power cord connector via a circuit. The top of the lifting part is equipped with a lighting power lower contact 6 corresponding to the lighting power upper contact 5, which is connected to the lighting fixture 15 via a circuit. When the lifting motor rises to the designated position, the lighting power upper contact 5 and the lighting power lower contact 6 contact each other, and the lighting fixture 15 is connected to the lighting power supply. When the lifting part descends, the lighting power upper contact 5 and the lighting power lower contact 6 disengage, and the lighting fixture 15 is disconnected from the lighting power supply. By setting the power supply circuit of the lighting fixture 15 in the form of a contact, the power supply can be cut off when descent is required, thus facilitating maintenance. Optionally, both the upper contact 5 and the lower contact 6 of the lighting power supply are cylindrical contacts.

[0042] In more preferred embodiments, the lifting device body includes a fixed bracket 1, a main chassis 12, and a safety cover 14. The safety cover 14 is installed on the top of the main chassis 12. The fixed bracket 1 is fixedly installed on the top of the safety cover 14. The lighting power cord connector and the lifting control cord connector are located on the side of the safety cover 14. The upper contact 5 of the lighting power cord is located at the bottom of the main chassis 12. The lifting part includes a bottom connecting tray 10, and the lower contact 6 of the lighting power cord is located on the top of the bottom connecting tray 10. Preferably, a lamp connecting hook 8 is installed at the bottom of the bottom connecting tray 10 for suspending lighting fixtures 15.

[0043] In more preferred embodiments, there are two lighting power cord connectors, which are respectively connected to the first circuit breaker switch via the first lighting power cord 2 and the second lighting power cord 3; the upper contact 5 of the lighting power supply is connected to the first lighting power cord 2 and the second lighting power cord 3 via a line; the bottom of the lifting part is provided with a third lighting power cord 7 and a fourth lighting power cord 9, which correspond to the first lighting power cord 2 and the second lighting power cord 3 respectively; both ends of the third lighting power cord 7 and both ends of the fourth lighting power cord 9 are connected to the lighting fixture 15 and the lower contact 6 of the lighting power supply.

[0044] In more preferred embodiments, the fixing bracket 1 is U-shaped, and both ends of the U-shaped fixing bracket 1 are fixedly connected to both sides of the safety cover 14 by bracket fixing screws 13. To prevent the lamp from rotating, there are two lifting cables 11, which are arranged in parallel.

[0045] Example 1

[0046] This embodiment discloses a lighting lifting system for an anechoic chamber. This lifting system requires its own power supply, as well as power to the lighting fixture 15, and also needs a lifting function. In this embodiment, the lifting system is divided into two parts: a main lifting unit on the power supply side, fixed below the ventilation opening at the top of the anechoic chamber, with the power input connected to the main lifting unit; and a detachable lifting section below the main lifting unit, connected to a lifting motor inside the main lifting unit via two parallel steel cables to effectively prevent the lifting section from spinning during lifting. The lifting section contacts the main lifting unit via cylindrical contacts, which provide a switching function for the power supply. The lighting fixture 15 is located below the lifting section and rises or falls together with it.

[0047] In traditional lifting systems, the lifting device is typically controlled remotely. However, the remote control module inside the lifting device can generate intentional electromagnetic emissions, interfering with normal EMC testing. To address this issue, this embodiment routes the power supply for the remote control module separately from the lighting power supply. A dedicated circuit breaker is installed for the remote control module in the ground distribution box. During normal lighting operation, the power supply to the remote control module is disconnected. When the device needs to be lowered for maintenance, the power supply is restored. Since EMC testing is not required during maintenance, the device can be turned on for lighting repairs. This effectively solves the problem of electromagnetic interference with normal EMC testing caused by the remote control module's power supply.

[0048] The anechoic chamber provided by this utility model includes the lighting lifting system for the anechoic chamber, wherein the lifting body is fixedly installed below the top ventilation opening of the anechoic chamber.

[0049] This invention solves the problem of high-altitude operations required for conventional lighting maintenance, improving maintenance efficiency and safety; it is practical and convenient; moreover, it is free from background noise interference, making it suitable for every anechoic chamber project, and mass production costs are lower.

[0050] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and 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. Therefore, they should not be construed as limitations on this application.

[0051] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A lighting hoist system for an anechoic chamber, characterized in that, It includes a lifting body, a lifting section and a power distribution box. The lifting section is connected to the bottom of the lifting body via a lifting cable (11). The bottom of the lifting section is used to install lighting fixtures (15). The main body of the elevator is equipped with a main power module and a remote control module. The input end of the main power module is connected to the power supply of the lighting lamp through the first circuit breaker switch inside the distribution box. The output end of the main power module is electrically connected to the lighting lamp (15) to supply power to the lighting lamp (15). The input terminal of the remote control module is connected to the power supply of the remote control module through the second circuit breaker switch inside the distribution box, and the output terminal of the remote control module is electrically connected to the lifting motor of the lifting body to control the lifting motor to lift.

2. The lighting hoist system for an anechoic chamber according to claim 1, characterized in that, The side of the main body of the lifting device is provided with a lighting power cord connector and a lifting control line connector. The remote control module and the lifting control line connector are connected by a line. The lifting control line connector is connected to the second circuit breaker switch through the lifting control line (4). The lighting power cord connector is connected to the first circuit breaker switch via the lighting power cord. The bottom of the lifting body is provided with a lighting power upper contact (5), which is connected to the lighting power cord connector via a line. The top of the lifting part is provided with a lower contact (6) of the lighting power supply corresponding to the upper contact (5) of the lighting power supply. The lower contact (6) of the lighting power supply is connected to the lighting fixture (15) through a line. When the lifting motor rises to the position, the upper contact (5) of the lighting power supply contacts the lower contact (6) of the lighting power supply, and the lighting fixture (15) is connected to the lighting power supply. When the lifting part descends, the upper contact (5) of the lighting power supply separates from the lower contact (6) of the lighting power supply, and the lighting fixture (15) is disconnected from the lighting power supply.

3. The lighting hoist system for an anechoic chamber according to claim 2, characterized in that, The main body of the lifting device includes a fixed bracket (1), a main chassis (12), and a safety cover (14), the safety cover (14) being installed on the top of the main chassis (12); The fixed bracket (1) is fixedly installed on the top of the safety cover (14), the lighting power cord connector and the lifting control cord connector are located on the side of the safety cover (14), and the lighting power upper contact (5) is located at the bottom of the main chassis (12).

4. The lighting hoist system for an anechoic chamber of claim 2, wherein, The lifting section includes a bottom connecting tray (10), and the lighting power supply lower contact (6) is located on the top of the bottom connecting tray (10).

5. The lighting hoist system for an anechoic chamber of claim 4, wherein, The bottom of the bottom connecting tray (10) is equipped with a lamp connecting hook (8) for suspending lighting fixtures (15).

6. The lighting hoist system for an anechoic chamber of claim 2, wherein, The lighting power cord has two connectors, which are connected to the first circuit breaker switch via the first lighting power cord (2) and the second lighting power cord (3) respectively. The upper contact (5) of the lighting power supply is connected to the first lighting power line (2) and the second lighting power line (3) respectively through the line. The bottom of the lifting part is provided with a third lighting power line (7) and a fourth lighting power line (9). The third lighting power line (7) and the fourth lighting power line (9) correspond to the first lighting power line (2) and the second lighting power line (3) respectively. The two ends of the third lighting power line (7) and the two ends of the fourth lighting power line (9) are connected with the lighting lamp (15) and the lighting power lower contact (6).

7. The lighting hoist system for an anechoic chamber of claim 3, wherein, The fixing support (1) is U-shaped, and the two ends of the U-shaped fixing support (1) are fixedly connected with the two sides of the safety protection cover (14) through support fixing screws (13).

8. The lighting hoist system for an anechoic chamber of claim 1, wherein, The lifting cable (11) is two, and the two lifting cables (11) are arranged in parallel.

9. The lighting hoist system for an anechoic chamber of claim 2, wherein, The lighting power upper contact (5) and the lighting power lower contact (6) are cylindrical contacts.

10. An anechoic chamber, characterized in that The lighting lifting system for an anechoic chamber comprises a lifting device and a lifting device body, and the lifting device body is fixedly installed below a top ventilation opening of the anechoic chamber.

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