Electromagnetic shielding machine room

Abstract

The utility model relates to the technical field of electromagnetic shielding equipment, in particular to an electromagnetic shielding machine room which comprises a shielding machine room, a ventilation window is arranged on one side of the shielding machine room, and a locking assembly is arranged on the other side of the shielding machine room. According to the combined design of the rotating handle, the first bevel gear and the second bevel gear, rotating motion of the rotating handle is converted into rotation of the double-end lead screw, so that an operator can control the whole locking mechanism by simply rotating the rotating handle on the outer side, the operation process is convenient and rapid, and the working efficiency is improved. The two ends of the double-end lead screw are symmetrically sleeved with the internal thread sleeves in a threaded mode, and when the double-end lead screw rotates, the internal thread sleeves at the two ends can synchronously and stably move in the face-to-face or back-to-back mode. By means of the design, it is guaranteed that the top blocks on the two sides can exert locking force evenly at the same time, and the connection stability between the inner door plate and the door frame body is enhanced. The length of the limiting groove is matched with the lifting stroke of the internal thread sleeve, and the movement requirement of the internal thread sleeve is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electromagnetic shielding equipment, in particular to an electromagnetic shielding machine room. BACKGROUND

[0002] In today's electronic information age, electronic devices are widely used in various fields such as communication, medical treatment, scientific research, finance, etc. These electronic devices will generate electromagnetic signals of different frequencies and intensities during operation, and are also easily affected by external electromagnetic interference. In the medical field, high-precision medical detection equipment such as magnetic resonance imaging and electroencephalogram is extremely demanding on the electromagnetic environment, and external electromagnetic interference may lead to inaccurate detection results, affecting the diagnosis and treatment of diseases; in the communication field, base station equipment and communication satellites need to work in a stable electromagnetic environment to ensure accurate transmission and reception of signals, avoiding communication interruption or signal distortion.

[0003] Patent Publication No. CN202559902U provides an electromagnetic shielding cabinet and its locking mechanism, which includes a pair of interlocking mechanisms respectively arranged on the cabinet door and the cabinet body, the interlocking mechanism is composed of a fixed buckle and a movable buckle arranged in position, the fixed buckle and the movable buckle can be locked with each other, the fixed buckle is fixedly connected to the shielding cabinet, the movable buckle is mechanically connected with the lock handle through a transmission assembly, and the movable buckle can be locked or released with the fixed buckle by rotating the lock handle. The simple structure can ensure the tight locking of the cabinet door and the cabinet body, the operation is convenient, the force is uniform, the reliability is high, and the access permission management of the electromagnetic shielding cabinet can be easily realized on this basis.

[0004] For the related technology in the above, the inventors found that the following defects exist: the structure of the above-mentioned device can ensure the tight locking of the cabinet door and the cabinet body in a simple way, the operation is convenient, the force is uniform, the reliability is high, and the access permission management is also convenient, but in actual application, some limitations are still exposed. In some scenes with high shielding space requirements, such as large electromagnetic shielding machine rooms, the locking mechanism suitable for shielding cabinets cannot meet the complex locking requirements. Moreover, for large shielding machine rooms, the requirements for ventilation, overall structural stability, etc. are significantly different from those of shielding cabinets. Practical new type content

[0005] In view of the deficiencies of the prior art, in order to solve the problems mentioned in the background art, the present application provides an electromagnetic shielding machine room.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an electromagnetic shielding room, comprising a shielding room with a ventilation window on one side and a locking assembly on the other side; the locking assembly includes an outer door panel, a rotating handle, a first bevel gear, a second bevel gear, a double-ended lead screw, a bearing seat, an internally threaded sleeve, a limiting block, a limiting groove, and a top block; the outer door panel is fixed to one side of the shielding room, the rotating handle is movably installed on the outer side of the outer door panel, the first bevel gear is fixed to the inner side of the rotating handle and meshes with the second bevel gear, the second bevel gear is fixedly sleeved on one end of the double-ended lead screw; the double-ended lead screw is horizontally installed on the inner side of the outer door panel through the bearing seat, and the threads at its two ends are in opposite directions. When rotated, the internally threaded sleeves with symmetrical threads at both ends can move in opposite directions in a straight line, thereby realizing the lifting and lowering of the top block, achieving the purpose of locking or unlocking. The double-ended lead screw is horizontally installed on the inner side of the outer door panel through a bearing seat. The two ends of the double-ended lead screw are symmetrically threaded with internal threaded sleeves. The internal threaded sleeves are movably inserted into the limiting block. The limiting block has a limiting groove at the top. The top of the internal threaded sleeve is fixedly connected to a top block.

[0007] Optionally, the locking assembly further includes a door frame body, a sealing strip, an inner door panel, a support frame, a hinge block, and a hinge post. The door frame body is fixed to the opening side of the shielded room, the sealing strip is fixed to the inner side of the door frame body, the inner door panel is connected to the hinge block through the support frame, the hinge block is movably sleeved on the hinge post, and the hinge post is fixedly installed inside the door frame body. The hinge block and hinge post together form a hinge structure, allowing the inner door panel to rotate flexibly around the hinge post, realizing the opening and closing operation of the shielded room.

[0008] Optionally, the shell of the shielded room is made of cold-rolled steel plate, wherein the thickness of the floor steel plate is 3mm and the thickness of the other surface steel plates is 2mm; a ground beam is provided at the bottom of the shell, and a keel layer composed of channel steel and rectangular tube is welded on the ground beam; the ventilation window is a cutoff waveguide structure, which is composed of multiple small waveguides with hexagonal cross sections forming a waveguide bundle.

[0009] Optionally, the top block is movably engaged inside the door frame body, and the door frame body has a matching slot at the position corresponding to the top block.

[0010] Optionally, the sealing strip is made of an elastic conductive material, and when the inner door panel and the door frame body are closed, an electromagnetic sealing interface is formed through the sealing strip.

[0011] Optionally, the limiting groove is a vertically oriented elongated through groove, the length of which matches the lifting stroke of the internal threaded sleeve.

[0012] In summary, this application includes the following beneficial technical effects:

[0013] 1、The utility model discloses in using, the combination design of rotating handle, first bevel gear and second bevel gear, the rotary motion of rotating handle is converted into the rotation of double -end screw rod, so that operating personnel can realize the control of whole locking mechanism through simple rotation outside rotating handle, and the operation process is convenient and fast, and the symmetrical screw sleeve of double -end screw rod both ends is connected to the internal thread sleeve pipe, when double -end screw rod rotates, the internal thread sleeve pipe of both ends can synchronously, stably move to each other or opposite. This design guarantees that both sides of the top block can exert locking force simultaneously and evenly, and the connection stability between the inner door plate and the door frame body is enhanced.

[0014] 2、The utility model discloses in using, the setting of limiting block and limit groove plays good limiting effect to internal thread sleeve pipe, ensures that internal thread sleeve pipe can only do linear motion in vertical direction, avoids unnecessary shaking with the rotation of double -end screw rod, guarantees the stability and accuracy of mechanism operation, and the length of limit groove is matched with the lifting stroke of internal thread sleeve pipe, meets the motion demand of internal thread sleeve pipe, and also will not affect the normal work of mechanism because of too long or too short stroke. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the whole structure schematic diagram of equipment in the embodiment of the application;

[0016] Figure 2 It is the local structure schematic diagram of equipment in the embodiment of the application;

[0017] Figure 3 It is the local structure schematic diagram of locking assembly in the embodiment of the application;

[0018] Figure 4 It is the local structure schematic diagram of locking assembly in the embodiment of the application;

[0019] Fig. 1, shield machine room;2, ventilation window;3, locking assembly;301, door frame body;302, sealing strip;303, inner door plate;304, support frame;305, block;306, twisted column;307, outer door plate;308, rotating handle;309, first bevel gear;310, second bevel gear;311, double -end screw rod;312, bearing seat;313, internal thread sleeve pipe;314, limiting block;315, limit groove;316, top block. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings Figures 1-4 The application is further explained.

[0021] The embodiment of the application discloses an electromagnetic shielding machine room.

[0022] Please refer to Figure 1The utility model relates to an electromagnetic shielding machine room, including shielding machine room 1 shielding machine room 1 one side is provided with ventilation window 2, the other side is provided with locking assembly 3,

[0023] Please refer to Figures 2 to 4 Locking assembly 3, locking assembly 3 include outer door panel 307, rotating handle 308, first bevel gear 309, second bevel gear 310, stud 311, bearing seat 312, internal thread sleeve 313, limit block 314, limit groove 315 and top block 316, outer door panel 307 is fixed to shielding machine room 1 one side, rotating handle 308 is movably installed to the outside of outer door panel 307, first bevel gear 309 is fixed to the inside of rotating handle 308 and is engaged with second bevel gear 310 transmission, and second bevel gear 310 is fixedly sleeved to one end of stud 311, stud 311 is horizontally installed to the inside of outer door panel 307 through bearing seat 312, and the both ends of stud 311 are symmetrically threaded with internal thread sleeve 313, internal thread sleeve 313 is movably arranged in limit block 314, and the top of limit block 314 is provided with limit groove 315, and the top of internal thread sleeve 313 is fixedly connected with top block 316.

[0024] Locking assembly 3 further includes door frame body 301, sealing strip 302, inner door panel 303, support frame 304, purchase block 305 and winch column 306, door frame body 301 is fixed to the opening side of shielding machine room 1, sealing strip 302 is fixed to the inside of door frame body 301, inner door panel 303 is connected with purchase block 305 through support frame 304, purchase block 305 movably sleeved on winch column 306, and winch column 306 is fixedly installed in the inside of door frame body 301.

[0025] The shell of shielding machine room 1 is made of cold-rolled steel plate, wherein the floor steel plate is 3mm thick, and the remaining surface steel plate is 2mm thick, the shell bottom is provided with a floor beam, the floor beam is welded with a keel layer composed of channel steel and rectangular tube, and the ventilation window 2 is a cutoff waveguide structure composed of multiple small waveguides with hexagonal section.

[0026] Top block 316 is movably clamped in the inside of door frame body 301, and the door frame body 301 is provided with an adaptive clamping groove corresponding to the position of top block 316.

[0027] Sealing strip 302 is made of elastic conductive material, and when inner door panel 303 is closed with door frame body 301, an electromagnetic sealing interface is formed through sealing strip 302.

[0028] Limit groove 315 is a long strip-shaped through groove in vertical direction, and the length thereof is matched with the lifting stroke of internal thread sleeve 313.

[0029] Further explanation is needed:

[0030] The electromagnetic shielding effect of the machine room is crucial for the normal operation of the internal equipment and data security. The door frame body 301 is fixed at the opening side of the shielding machine room 1, the inner door plate 303 is connected with the door frame body 301 through the support frame 304, the block 305 and the winding column 306, forming an openable and closable door structure. When the inner door plate 303 is closed, the sealing strip 302 made of elastic conductive material fills the gap between the inner door plate 303 and the door frame body 301, forming an electromagnetic sealing interface, effectively reducing electromagnetic leakage.

[0031] Meanwhile, the mechanical structure design of the locking assembly 3 ensures the firm closing of the door. The rotation of the rotating handle 308 drives the double-headed screw rod 311 to rotate through the transmission of the first bevel gear 309 and the second bevel gear 310. Since the threads at both ends of the double-headed screw rod 311 are opposite in direction, the rotation of the double-headed screw rod 311 will cause the inner threaded sleeve 313 at both ends to move synchronously in opposite or opposite directions. The top block 316 at the top of the inner threaded sleeve 313 rises and falls, and when the top block 316 rises and is clamped into the matching clamping groove of the door frame body 301, the inner door plate 303 is firmly locked on the door frame, preventing accidental opening of the door due to external factors and maintaining the sealing and stability of the machine room, creating a good electromagnetic environment for the internal equipment.

[0032] The operator only needs to rotate the rotating handle 308 on the outside of the outer door plate 307 to easily realize the locking and unlocking of the door without complex operation procedures, greatly improving the use efficiency. Moreover, this mechanical structure through gear transmission and screw nut pair has high transmission precision and stability. The setting of the limiting block 314 and the limiting groove 315 further ensures the linear motion of the inner threaded sleeve 313, avoids deviation and shaking during the motion process, and makes the entire locking process more accurate and reliable.

[0033] The working principle of the above embodiment is as follows:

[0034] First, when the electromagnetic shielding machine room 1 needs to be opened, the operator stands on one side of the outer door plate 307 of the shielding machine room 1 and prepares to operate the rotating handle 308. At this time, the inner door plate 303 is in a closed state, the top block 316 is clamped in the clamping groove of the door frame body 301, and the inner door plate 303 and the door frame body 301 form an electromagnetic sealing interface through the sealing strip 302, ensuring the electromagnetic shielding effect of the machine room.

[0035] Secondly, the operator manually rotates the rotating handle 308, and the rotating handle 308 starts to move in a circle around its own rotation axis. Since the first bevel gear 309 is fixed to the inside of the rotating handle 308, the rotation of the rotating handle 308 will drive the first bevel gear 309 to rotate synchronously. According to the principle of bevel gear transmission, the rotation of the first bevel gear 309 will drive the second bevel gear 310 to rotate, thereby transmitting the rotating motion of the rotating handle 308 to the second bevel gear 310.

[0036] Then, the second bevel gear 310 is fixedly sleeved at one end of the double-headed screw rod 311. When the second bevel gear 310 rotates, it will drive the double-headed screw rod 311 to rotate in the bearing seat 312 around its own axis. Since the threads at the two ends of the double-headed screw rod 311 are opposite in direction, and the two ends are symmetrically sleeved with the internally threaded sleeve 313, according to the principle of screw nut transmission, the rotation of the double-headed screw rod 311 will make the two internally threaded sleeves 313 move linearly along the screw rod in opposite directions or in the same direction. During the movement of the internally threaded sleeve 313, the limiting block 314 and the limiting groove 315 play a limiting role, ensuring that the internally threaded sleeve 313 can only move linearly in the vertical direction, avoiding shaking with the screw rod.

[0037] Next, as the internally threaded sleeve 313 moves downward, the top block 316 fixedly connected to the top of the internally threaded sleeve 313 also moves downward. When the top block 316 is detached from the clamping groove inside the door frame body 301, the locking state between the inner door plate 303 and the door frame body 301 is released. At this time, the inner door plate 303 can rotate around the winding column 306, and the operator can easily open the inner door plate 303 outward to enter the electromagnetic shielding machine room 1.

[0038] Finally, when it is necessary to close the electromagnetic shielding machine room 1, the operator rotates the inner door plate 303 around the winding column 306 to the position where it is attached to the door frame body 301, and then reversely rotates the rotating handle 308, repeating the above transmission process to make the double-headed screw rod 311 reversely rotate, drive the internally threaded sleeve 313 to rise, and make the top block 316 rise with the internally threaded sleeve 313 and be clamped into the clamping groove of the door frame body 301, thereby realizing the relocking of the inner door plate 303 and the door frame body 301. At the same time, the sealing strip 302 between the inner door plate 303 and the door frame body 301 is compressed, forming a good electromagnetic sealing interface and ensuring the electromagnetic shielding performance of the machine room.

[0039] The above are the preferred embodiments of the present application, which do not limit the protection scope of the present application. Therefore, any equivalent changes made on the basis of the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An electromagnetically shielded machine room comprising a shielded machine room (1), characterized in that: The shielding machine room (1) is provided with a ventilation window (2) on one side and a locking assembly (3) on the other side; the locking assembly (3) comprises an outer door plate (307), a rotating handle (308), a first bevel gear (309), a second bevel gear (310), a double-head screw rod (311), a bearing seat (312), an internally threaded sleeve (313), a limiting block (314), a limiting groove (315) and a top block (316); the outer door plate (307) is fixed on one side of the shielding machine room (1), the rotating handle (308) is movably installed on the outer side of the outer door plate (307), the first bevel gear (309) is fixed on the inner side of the rotating handle (308) and is in meshing transmission with the second bevel gear (310), and the second bevel gear (310) is fixedly sleeved on one end of the double-head screw rod (311); the double-head screw rod (311) is horizontally installed on the inner side of the outer door plate (307) through the bearing seat (312), the two ends of the double-head screw rod (311) are symmetrically and threadedly sleeved with the internally threaded sleeve (313), the internally threaded sleeve (313) is movably arranged in the limiting block (314), the limiting groove (315) is formed in the top of the limiting block (314), and the top of the internally threaded sleeve (313) is fixedly connected with the top block (316).

2. The electromagnetically shielded machine room of claim 1, wherein: The locking assembly (3) further comprises a door frame body (301), a sealing strip (302), an inner door plate (303), a supporting frame (304), a winding block (305) and a winding column (306); the door frame body (301) is fixed on the opening side of the shielding machine room (1), the sealing strip (302) is fixed on the inner side of the door frame body (301), the inner door plate (303) is connected with the winding block (305) through the supporting frame (304), the winding block (305) is movably sleeved on the winding column (306), and the winding column (306) is fixedly installed in the door frame body (301).

3. The electromagnetically shielded machine room of claim 1, wherein: The shell of the shielding machine room (1) is made of cold-rolled steel plates, wherein the thickness of the floor steel plate is 3 mm, and the thickness of the remaining surface steel plates is 2 mm; the shell bottom is provided with a floor beam, and a keel layer composed of channel steel and rectangular pipes is welded on the floor beam; the ventilation window (2) is of a cutoff waveguide structure and is composed of a plurality of small waveguides with hexagonal sections.

4. The electromagnetically shielded machine room of claim 1, wherein: The top block (316) is movably clamped in the door frame body (301), and the door frame body (301) is provided with an adaptive clamping groove at the position corresponding to the top block (316).

5. The electromagnetically shielded machine room of claim 2, wherein: The sealing strip (302) is made of elastic conductive material, and the inner door plate (303) and the door frame body (301) form an electromagnetic sealing interface through the sealing strip (302) when they are closed.

6. The electromagnetically shielded machine room of claim 1, wherein: The limiting groove (315) is a long strip-shaped through groove opened in the vertical direction, and the length thereof matches the lifting stroke of the internally threaded sleeve (313).

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