A convenient millimeter wave shielding box

Abstract

The application relates to a convenient-to-assemble and convenient-to-disassemble millimeter wave shielding box in the field of millimeter wave shielding boxes. The millimeter wave shielding box comprises two end frames, a foldable first connecting frame and a second connecting frame arranged between the two end frames, the first connecting frame and the second connecting frame are arranged on a group of opposite side walls of the end frame, a supporting frame is hingedly arranged on another group of opposite side walls of the two end frames, the supporting frame is used for supporting between the first connecting frame and the second connecting frame, and a wave-absorbing panel is detachably and fixedly connected to the end frame, the first connecting frame, the second connecting frame and the supporting frame, and the wave-absorbing panels can cooperatively enclose a closed box body. The application can simplify the process of building the shielding box and improve construction efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of millimeter wave shielding boxes, in particular to a millimeter wave shielding box convenient to assemble and disassemble. BACKGROUND

[0002] Electromagnetic waves with a wavelength of 1-10 millimeters are called millimeter waves. A shielding box is a metal body made of conductive or magnetic materials in various shapes, which limits electromagnetic ability within a certain space range and is used to suppress radiation interference. It processes conduction and radiation to provide a non-interference test environment for the measured wireless communication equipment.

[0003] Traditional shielding boxes are usually large in size and complex in design, and need to be first built into a framework and then installed with panels having electromagnetic wave absorption effect on the framework. This results in a complicated process of manufacturing the shielding box and a long construction period. SUMMARY

[0004] In order to simplify the process of building a shielding box and improve construction efficiency, the present application provides a millimeter wave shielding box convenient to assemble and disassemble.

[0005] The millimeter wave shielding box convenient to assemble and disassemble provided by the present application adopts the following technical solution:

[0006] A millimeter wave shielding box convenient to assemble and disassemble comprises two end frames, a first foldable connecting frame and a second foldable connecting frame arranged between the two end frames, the first connecting frame and the second connecting frame being located on a group of opposite side walls of the end frames, a support frame being hinged to another group of opposite side walls of the two end frames, the support frame being used to support between the first connecting frame and the second connecting frame, and a wave-absorbing panel being detachably and fixedly connected to the end frame, the first connecting frame, the second connecting frame and the support frame, and each wave-absorbing panel being capable of cooperating with each other to enclose a closed box body.

[0007] By adopting the above technical solution, the operator unfolds the first connecting frame, the second connecting frame and the support frame to form a box frame. Since the end frame, the first connecting frame, the second connecting frame and the support frame are all fixed with wave-absorbing panels, a closed box body is formed. When the operator needs to move the shielding box, the operator can first fold the shielding box. When folding, the operator first stores the support frame, removes the support effect of the support frame on the first connecting frame and the second connecting frame, and then folds the first connecting frame and the second connecting frame, so as to finally realize the folding of the shielding box, reduce the volume of the shielding box for convenient transportation, and the operator can move the shielding box to a designated position for unfolding. Compared with directly constructing and manufacturing a shielding box, the foldable shielding box can greatly shorten the construction period and is convenient to disassemble, having the advantages of quick assembly and disassembly.

[0008] Optionally, the first connecting frame comprises two first sub-frames hinged to each other, the first sub-frames correspond to the end frames one by one, and the two first sub-frames are hinged to the corresponding end frames on the opposite sides, and the wave-absorbing panel corresponding to the first connecting frame is fixedly connected to the first sub-frames.

[0009] By adopting the above technical scheme, the operator pushes the two end frames to approach each other, so that the two first sub-frames are turned down to realize the folding effect of the first connecting frame.

[0010] Optionally, the second connecting frame comprises a middle frame, the middle frame is hinged to the second sub-frames at positions corresponding to the two end frames, the two second sub-frames are hinged to the support rods at the opposite ends, the support rods are hinged to the end frames, the middle frame is hinged to the connecting rods at positions corresponding to the two end frames, the connecting rods are hinged to the sides of the end frames close to the first connecting frame, and the wave-absorbing panel corresponding to the second connecting frame is fixedly connected to the second sub-frames.

[0011] By adopting the above technical scheme, the operator pushes the two end frames to approach each other while lifting the two second sub-frames, so that the end frames and the second sub-frames are folded, and then the operator folds the connecting rods on the two sides of the middle frame, thereby realizing the folding of the second connecting frame.

[0012] Optionally, a vertical plate is fixedly connected to the middle frame, a first sliding seat is slidably arranged on the vertical plate, the first sliding seat is located between the two first sub-frames, the two first sub-frames are hinged to the first sliding seat, and a hydraulic cylinder for controlling the lifting of the first sliding seat is arranged on the vertical plate.

[0013] By adopting the above technical scheme, the operator starts the hydraulic cylinder to drive the first sliding seat to slide, thereby driving the two first sub-frames to turn over each other, so as to fold the first connecting frame.

[0014] Optionally, a second sliding seat is slidably arranged on the vertical plate, control rods are hinged to the second sliding seat at positions corresponding to the two second sub-frames, the control rods are hinged to the second sub-frames at the sides away from the second sliding seat, and a control assembly for controlling the sliding of the second sliding seat is arranged on the vertical plate.

[0015] By adopting the above technical scheme, the operator drives the second sliding seat to slide through the control assembly, and under the linkage action of the control rods, drives the two second sub-frames to turn over, so that the second sub-frames and the end frames are folded and abut against the connecting rods on the corresponding sides, the operator continues to control the movement of the second sliding seat, and the process is matched with the folding of the first connecting frame, so that the connecting rods on the two sides of the middle frame approach each other and are folded, thereby realizing the folding effect of the shielding box.

[0016] Optionally, the vertical plate is rotationally connected with a sprocket, two sprockets are distributed along the sliding direction of the sliding seat, a chain is arranged between the two sprockets, the chain is fixedly connected to the first sliding seat and the second sliding seat, and the first sliding seat and the second sliding seat are driven to move in opposite directions.

[0017] By adopting the above technical scheme, the operator starts the hydraulic cylinder to drive the first sliding seat to move, and under the transmission rotation of the chain, the second sliding seat and the first sliding seat move in opposite directions. When the first sliding seat drives the two first sub-frames to be folded, the second sliding seat drives the two second sub-frames to be folded under the action of the control rod, thereby realizing the folding effect of the shielding box, and further improving the convenience of the operator to unfold or store the shielding box.

[0018] Optionally, the support frame comprises a third sub-frame hinged to the end frame, a fourth sub-frame is hinged to the third sub-frame, the wave-absorbing panel corresponding to the support frame is fixedly connected to the third sub-frame and the fourth sub-frame, a limiting column is fixedly connected to one end of the fourth sub-frame away from the third sub-frame, limiting grooves for clamping the limiting column are arranged on the first sliding seat and the intermediate frame, and a limiting assembly for limiting the folding of the third sub-frame and the fourth sub-frame is arranged between the first connecting frame and the second connecting frame.

[0019] By adopting the above technical scheme, the operator unfolds the first connecting frame and the second connecting frame, and then unfolds each support frame. The third sub-frame and the fourth sub-frame are used to support the first connecting frame and the second connecting frame, so that the first connecting frame and the second connecting frame are kept unfolded. After unfolding the support frame, the limiting column of the fourth connecting frame is inserted into the limiting groove on the first sliding seat and the intermediate frame. At this time, the fourth sub-frames on the same side of the two end frames abut against each other. Finally, the operator limits the folding of the third sub-frame through the limiting assembly, so that the support frame is kept unfolded. The support frame supports the first connecting frame and the second connecting frame, which is conducive to increasing the structural stability of the entire shielding box.

[0020] Optionally, the limiting assembly comprises a vertical column fixedly connected to the third sub-frame, the axial direction of the vertical column is perpendicular to the folding direction of the third sub-frame, mounting seats are arranged on the first connecting frame and the second connecting frame, a sleeve is rotationally connected to the mounting seat, and a recess is formed in the sleeve for embedding the vertical column.

[0021] By adopting the above technical scheme, the operator moves the vertical column towards the sleeve during the unfolding of the support frame. The operator rotates the sleeve so that the recess in the sleeve is arranged towards the vertical column. After unfolding the support frame, the vertical column is inserted into the sleeve. Finally, the operator rotates the sleeve to change the position of the recess in the sleeve, thereby limiting the reverse folding of the vertical column, and keeping the support frame unfolded.

[0022] Optionally, the sleeve is fixedly connected with a wing plate, a sliding groove is formed in the wing plate, a sliding block is slidably arranged in the sliding groove, a hanging ring is fixedly connected to the sliding block, a tension spring is arranged on the wing plate and used to connect the sliding block, the sliding block is abutted to one side of the sliding groove close to the sleeve under the action of the tension spring, a supporting plate is fixedly connected to the mounting seat, and a hook groove used for clamping the hanging ring is formed in the supporting plate.

[0023] By adopting the above technical scheme, the wing plate is arranged to control the sleeve to overturn, the operator moves the wing plate to be close to the supporting plate to change the position of the embedding groove and limit the column from being separated from the sleeve. The operator overcomes the elastic force of the tension spring, moves the hanging ring to be aligned with the hook groove, and clamps the hanging ring in the hook groove, so that the hanging ring is kept in the state of being clamped in the hook groove under the action of the elastic force of the tension spring, the wing plate is limited from overturning, the sleeve is prevented from moving accidentally, the column is prevented from being separated from the sleeve, and the displacement of the supporting frame is avoided, thereby improving the stability of the shielding box.

[0024] Optionally, a moving plate is slidably arranged on the supporting plate, an inclined surface used for pushing the hanging ring out of the hook groove is arranged on the wing plate, a push rod is rotatably connected to the moving plate, a crank is fixedly connected to the push rod, and an insertion slot used for inserting the crank is formed in the supporting plate. When the crank is inserted into the insertion slot, the inclined surface is away from the hook groove.

[0025] By adopting the above technical scheme, the crank is located in the first insertion slot when the hanging ring is clamped in the hook groove. When the operator needs to release the limiting effect of the hook groove on the hanging ring, the operator rotates the crank out of the first insertion slot and moves the crank to drive the inclined surface of the moving plate to slide towards the hook groove, and the hanging ring is pushed out of the hook groove by the inclined surface. The arrangement of the moving plate facilitates the operator to release the limiting effect of the hook groove on the hanging ring, and further release the limiting effect on the wing plate.

[0026] In summary, the present application has at least one of the following beneficial technical effects:

[0027] 1. When folding, the operator first stores the supporting frame, releases the supporting effect of the supporting frame on the first connecting frame and the second connecting frame, folds the first connecting frame and the second connecting frame, and finally realizes the folding of the shielding box, reduces the volume of the shielding box to facilitate transportation, and the operator can move the shielding box to a specified position for unfolding. Compared with directly constructing and manufacturing the shielding box, the foldable shielding box can greatly shorten the construction period, simplify the process of building the shielding box, and improve the construction efficiency.

[0028] 2. The hook slot limits the hanging ring, and then limits the wing plate, reduces the accidental movement of the sleeve, makes the stand column separate from the sleeve, so as to cause the displacement of the support frame, which is beneficial to improve the support stability of the support frame to the first connecting frame and the second connecting frame, and then improve the stability of the shielding box. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 is a schematic diagram of the overall structure of the embodiment of the present application.

[0030] Figure 2 is a schematic diagram of the structure of the embodiment of the present application for realizing the unfolded state of the first connecting frame and the second connecting frame.

[0031] Figure 3 is a schematic diagram of the structure of the embodiment of the present application for realizing the folded state of the first connecting frame and the second connecting frame.

[0032] Figure 4 is a schematic diagram of the structure of the embodiment of the present application for realizing the stand plate.

[0033] Figure 5 is a schematic diagram of the structure of the embodiment of the present application for realizing the limiting column and the limiting groove.

[0034] Figure 6 is Figure 1 is an enlarged schematic diagram of part A.

[0035] Figure 7 is a schematic diagram of the structure of the embodiment of the present application for realizing the limiting assembly.

[0036] BRIEF DESCRIPTION OF DRAWINGS: 1, end frame; 11, wave-absorbing panel; 2, first connecting frame; 21, first sliding seat; 22, first sub-frame; 3, second connecting frame; 31, middle frame; 32, second sub-frame; 33, support rod; 34, connecting rod; 4, stand plate; 41, hydraulic cylinder; 42, second sliding seat; 43, control rod; 44, control assembly; 45, chain wheel; 46, chain; 5, support frame; 51, third sub-frame; 52, fourth sub-frame; 53, limiting column; 54, limiting groove; 6, limiting assembly; 61, mounting seat; 62, sleeve; 63, stand column; 64, embedding groove; 7, wing plate; 71, sliding block; 72, hanging ring; 73, tension spring; 74, support plate; 75, hook slot; 76, inclined guide plate; 77, sliding groove; 8, moving plate; 81, inclined surface; 82, insertion slot; 83, push rod; 84, crank. DETAILED DESCRIPTION

[0037] The following will be described in detail in combination with the accompanying Figures 1-7 The present application will be further described in detail.

[0038] The embodiment of the present application discloses a convenient millimeter wave shielding box. As shown in the drawings, Figure 1The convenient-to-assemble and disassemble millimeter wave shielding box comprises two spaced apart end frames 1, the end frame 1 is a cuboid frame, and the width direction of the end frame 1 is parallel to the height direction of the shielding box. The upper ends of the two end frames 1 are connected through a foldable first connecting frame 2, the lower ends of the two end frames 1 are connected through a foldable second connecting frame 3, and the two sides of the end frame 1 along the length direction of the end frame 1 are hingedly connected with support frames 5 for supporting between the first connecting frame 2 and the second connecting frame 3. The end frame 1, the first connecting frame 2, the second connecting frame 3 and the support frame 5 are all detachably fixedly connected with wave-absorbing panels 11 through bolts, the wave-absorbing panel 11 is a wave-absorbing material such as polyurethane wave-absorbing sponge SA, and is used for absorbing electromagnetic waves. The wave-absorbing panels 11 surround to form a closed shielding box.

[0039] As Figure 2 and Figure 3 The first connecting frame 2 comprises a first sliding seat 21 in the shape of a cuboid plate, the first sliding seat 21 is horizontally arranged, and the length direction of the first sliding seat 21 is parallel to the length direction of the end frame 1. The two sides of the first sliding seat 21 along the width direction of the first sliding seat 21 are hingedly connected with first sub-frames 22, the first sub-frame 22 is in the shape of a long rectangular frame, the width directions of the two first sub-frames 22 are both parallel to the length direction of the end frame 1, the two first sub-frames 22 are distributed along the spacing direction of the two end frames 1, the first sub-frame 22 corresponds to the end frame 1 one by one, and the opposite sides of the two first sub-frames 22 are both hingedly connected with the corresponding end frame 1, and the two first sub-frames 22 can only be flipped downward. The two first sub-frames 22 are both in the shape of a long rectangular frame, and the wave-absorbing panel 11 corresponding to the first connecting frame 2 is detachably fixedly connected in the first sub-frame 22 through a bolt. When the first connecting frame 2 is unfolded, the length directions of the two first sub-frames 22 are parallel to each other. When the first connecting frame 2 is folded, the first sliding seat 21 is flipped downward, the opposite sides of the two first sub-frames 22 hingedly connected with each other are flipped downward, and the two first sub-frames 22 tend to be coincident with each other as the two end frames 1 are close to each other.

[0040] The second connecting frame 3 comprises a middle frame 31 arranged horizontally between the two end frames 1, the middle frame 31 is in the shape of a long rectangular frame, and the two end frames 1 are spaced apart along the width direction of the middle frame 31. The two sides of the middle frame 31 along the width direction of the middle frame 31 are hingedly connected with second sub-frames 32 in the shape of long rectangular frames, the width directions of the second sub-frames 32 are parallel to the length direction of the middle frame 31, and the wave-absorbing panel 11 corresponding to the second connecting frame 3 is detachably fixedly connected in the second sub-frame 32 and the middle frame 31 through a bolt. The side away from the middle frame 31 of each of the two second sub-frames 32 is hingedly connected with a support rod 33, one end of the support rod 33 away from the second sub-frame 32 is hingedly connected with the lower end of the corresponding end frame 1. The position corresponding to the two end frames 1 of the middle frame 31 is hingedly connected with connecting rods 34, one end of the connecting rod 34 away from the corresponding middle frame 31 is hingedly connected with the upper end of the end frame 1.

[0041] When the second connecting frame 3 is in the unfolded state, the width direction of the middle frame 31 is parallel to the length direction of the two second sub-frames 32, the support rod 33 is located below the corresponding second sub-frame 32, and the length direction of the support rod 33 is parallel to the length direction of the second sub-frame 32, and the two second sub-frames 32 are abutted on the corresponding end frame 1 at the opposite ends. When folding the second connecting frame 3, the connecting rods 34 on both sides of the middle frame 31 tend to be folded, and the second sub-frames 32 on both sides of the middle frame 31 can only be flipped upward relative to the middle frame 31, and the support rod 33 can only be flipped downward relative to the corresponding second sub-frame 32, and the support rod 33 can only be flipped upward relative to the corresponding end frame 1.

[0042] As Figure 1 and Figure 4 , the middle frame 31 is vertically and fixedly connected with a vertical plate 4 along the length direction of the middle frame 31 on both sides, and the length direction of the two vertical plates 4 is parallel to the height direction of the shielding box. The first sliding seat 21 is vertically and slidingly arranged between the two vertical plates 4, and the opposite side of the two vertical plates 4 is fixedly connected with a hydraulic cylinder 41, and the piston rod of the hydraulic cylinder 41 is fixedly connected with the first sliding seat 21. The operator drives the first sliding seat 21 to rise and fall by starting the two hydraulic cylinders 41, thereby controlling the two first sub-frames 22 to unfold or fold.

[0043] The opposite surfaces of the two vertical plates 4 are slidingly provided with a second sliding seat 42, and the sliding direction of the second sliding seat 42 is parallel to the sliding direction of the sliding seat. The second sliding seat 42 is hingedly connected with a control rod 43 on both sides in the width direction of the middle frame 31, the control rods 43 of the same second sliding seat 42 correspond to the second sub-frames 32 one by one, and the end of the control rod 43 away from the second sliding seat 42 is hingedly connected to the corresponding second sub-frame 32. When the second sliding seat 42 moves upward along the vertical plate 4, the two second sub-frames 32 are controlled to fold under the linkage action of the control rod 43; when the second sliding seat 42 moves downward along the vertical plate 4, the two second sub-frames 32 are driven to unfold.

[0044] The two vertical plates 4 are provided with a control assembly 44 for controlling the sliding of the second sliding seat 42, and the control assembly 44 includes two sprockets 45 rotatably connected to the vertical plate 4, the two sprockets 45 are spaced apart in the sliding direction of the second sliding seat 42, and the first sliding seat 21 and the second sliding seat 42 are located between the two sprockets 45. A transmission chain 46 is connected between the two sprockets 45, the first sliding seat 21 and the second sliding seat 42 are fixedly connected to the chain 46 through a connecting seat, and the chain 46 moves to drive the first sliding seat 21 and the second sliding seat 42 to slide reversely on the vertical plate 4.

[0045] As Figure 1 and Figure 5The support frame 5 comprises a third sub-frame 51 hinged to one side of the end frame 1 in the length direction, and a fourth sub-frame 52 hinged to the side of the third sub-frame 51 away from the end frame 1. The third sub-frame 51 and the fourth sub-frame 52 are both vertically arranged rectangular frames, and the length directions of the third sub-frame 51 and the fourth sub-frame 52 are parallel to the width direction of the end frame 1. The wave-absorbing panel 11 is detachably fixedly connected in the third sub-frame 51 and the fourth sub-frame 52 by screws. When the support frame 5 is unfolded, the width directions of the third sub-frame 51 and the fourth sub-frame 52 are parallel to the width direction of the middle frame 31, and the third sub-frame 51 and the fourth sub-frame 52 are vertically supported between the first sub-frame 22 and the second sub-frame 32, so that the first connecting frame 2 and the second connecting frame 3 remain in the unfolded state. After the first connecting frame 2, the second connecting frame 3 and the support frame 5 are unfolded, the fourth sub-frame 52 is located between the middle frame 31 and the first sliding seat 21, and the upper and lower ends of the side of the fourth sub-frame 52 away from the third sub-frame 51 are fixedly connected with limiting columns 53. Limiting grooves 54 for inserting the limiting columns 53 are formed on the opposite surfaces of the middle frame 31 and the first sliding seat 21, and the limiting grooves 54 are open at both ends in the width direction of the middle frame 31. When unfolding the support frame 5, the operator makes the limiting columns 53 on the fourth sub-frame 52 clamped in the limiting grooves 54.

[0046] As Figure 6 and Figure 7 The first sub-frame 22 and the second sub-frame 32 are both provided with a limiting assembly 6 for limiting the overturning of the support frame 5 and keeping the support frame 5 in the unfolded state. The limiting assembly 6 comprises a mounting seat 61 fixedly connected to the first sub-frame 22 or the second sub-frame 32, and a sleeve 62 rotatably connected to the mounting seat 61. The axial direction of the sleeve 62 is parallel to the length direction of the third sub-frame 51. A stand 63 is fixedly connected to the third sub-frame 51, and the axial direction of the stand 63 is parallel to the length direction of the third sub-frame 51. The third sub-frame 51 and the fourth sub-frame 52 are hinged to each other through the stand 63, and the stand 63 extends towards the corresponding sleeve 62. The sleeve 62 is radially provided with an embedding groove 64 for inserting the stand 63 into the sleeve 62. When the embedding groove 64 faces the stand 63, the operator can make the stand 63 on the third sub-frame 51 inserted into the sleeve 62 through the embedding groove 64 by unfolding the support frame 5. Then the operator rotates the sleeve 62 to change the direction of the embedding groove 64, so as to limit the stand 63 from separating from the sleeve 62, thereby limiting the overturning of the third sub-frame 51 and keeping the support frame 5 in the unfolded state.

[0047] The sleeve 62 is fixedly connected with a wing plate 7 for conveniently turning the sleeve 62 by an operator, the wing plate 7 is provided with a sliding groove 77, a sliding block 71 is slidably arranged in the sliding groove 77, a hanging ring 72 is fixedly connected to the sliding block 71, a tension spring 73 is fixedly connected to the wing plate 7 and pulls the sliding block 71 to abut against one end of the sliding groove 77 close to the sleeve 62. The mounting seat 61 is fixedly connected with a support plate 74, the support plate 74 is provided with a hook groove 75 for cooperating with the hanging ring 72, one side of the vertical plate 4 close to the sleeve 62 is fixedly connected with an inclined guide plate 76, and one side of the inclined guide plate 76 close to the hook groove 75 is inclined toward the mounting seat 61. The vertical plate 4 is slidably arranged with a moving plate 8, and the moving plate 8 can move toward or away from the hook groove 75, the moving plate 8 is provided with an inclined surface 81 for pushing the hanging ring 72 out of the hook groove 75, and the inclined surface 81 has the same inclination direction as the inclined guide plate 76. The moving plate 8 is rotatably connected with a push rod 83, the axial direction of the push rod 83 is parallel to the sliding direction of the moving plate 8, the push rod 83 is vertically fixedly connected with a crank 84, and the support plate 74 is provided with a slot 82 for clamping the crank 84, when the crank 84 is inserted into the slot 82, the inclined surface 81 moves away from the hook groove 75, at this time, the hanging ring 72 can be inserted into the hook groove 75, thereby limiting the turning of the wing plate 7. The operator moves the push rod 83 to drive the moving plate 8 to move, so that the inclined surface 81 moves to the clamping groove position, for limiting the hanging ring 72 to be inserted into the hook groove 75, or pushing the hanging ring 72 out of the clamping groove to release the limiting effect on the wing plate 7.

[0048] The principle of the embodiment of the present application is that when the shielding box is in the unfolded state, the two end frames 1 are vertically arranged, the first connecting frame 2 and the second connecting frame 3 are unfolded, and the supporting frame 5 is unfolded and supported between the first connecting frame 2 and the second connecting frame 3, and the supporting frames 5 on the same side of the two end frames 1 abut against each other after unfolding. The wave-absorbing panel 11 is installed on the end frame 1, the first connecting frame 2, the second connecting frame 3 and the supporting frame 5 to form a complete and closed shielding box.

[0049] When the operator needs to fold the shielding box, the operator needs to fold the supporting frame 5 first. Before folding the supporting frame 5, the operator turns the sleeve 62 to make the stand 63 disengage from the sleeve 62, thereby releasing the limiting effect of the sleeve 62 on the third sub-frame 51. The operator folds each supporting frame 5 to make the third sub-frame 51 and the fourth sub-frame 52 fold into the end frame 1.

[0050] After the folding of the support frame 5 is completed, the operator starts the two hydraulic cylinders 41 to drive the first sliding seat 21 to move downward, thereby driving the two first sub-frames 22 to fold with each other, and the connecting rods 34 on both sides of the middle frame 31 to fold with each other. While the first sliding seat 21 moves downward, under the transmission action of the chain 46, the two second sliding seats 42 move upward, thereby driving the two second sub-frames 32 to flip upward and fold with each other. In the flipping process of the two second sub-frames 32, under the linkage rotation of the supporting rods 33, the two end frames 1 are caused to approach each other, the first connecting frame 2 and the second connecting frame 3 are caused to fold with each other, and the entire folding of the shielding box is completed. By folding the shielding box, the volume of the shielding box is reduced, so that the operator can transport it. The operator can conveniently transport the shielding box to a designated position for unfolding, so that it can be temporarily used, which is convenient and fast, and reduces the time consumed for on-site construction and manufacturing of the shielding box.

[0051] The above are preferred embodiments of the present application, and are not intended to 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 shall be covered within the protection scope of the present application.

Claims

1. A portable millimeter wave shielded enclosure, characterized by: The utility model provides a foldable box, comprising two end frames (1), a first connecting frame (2) and a second connecting frame (3) are arranged between two end frames (1), the first connecting frame (2) and the second connecting frame (3) are located on a group of opposite side walls of the end frame (1), a supporting frame (5) is hinged on another group of opposite side walls of two end frames (1), the supporting frame (5) is used for supporting between the first connecting frame (2) and the second connecting frame (3), and the end frame (1), the first connecting frame (2), the second connecting frame (3) and the supporting frame (5) are all detachably and fixedly connected with wave-absorbing panels (11), and each wave-absorbing panel (11) can cooperate to enclose a closed box. The first connecting frame (2) comprises two first sub-frames (22) hinged with each other, the first sub-frames (22) correspond to the end frames (1) one by one, and the opposite sides of the two first sub-frames (22) are hinged to the corresponding end frames (1), and the wave-absorbing panel (11) corresponding to the first connecting frame (2) is fixedly connected to the first sub-frames (22). The second connecting frame (3) comprises an intermediate frame (31), the intermediate frame (31) is hinged with second sub-frames (32) towards the positions of the two end frames (1), the opposite ends of the two second sub-frames (32) are hinged with supporting rods (33), the supporting rods (33) are hinged to the end frames (1), the intermediate frame (31) is hinged with connecting rods (34) corresponding to the positions of the two end frames (1), the connecting rods (34) are hinged to the sides of the end frames (1) close to the first connecting frame (2), and the wave-absorbing panel (11) corresponding to the second connecting frame (3) is fixedly connected to the second sub-frames (32). A vertical plate (4) is fixedly connected to the intermediate frame (31), a first sliding seat (21) is slidably arranged on the vertical plate (4), the first sliding seat (21) is located between the two first sub-frames (22), and the two first sub-frames (22) are hinged to the first sliding seat (21); the vertical plate (4) is provided with a hydraulic cylinder (41) for controlling the lifting of the first sliding seat (21). The supporting frame (5) comprises a third sub-frame (51) hinged to the end frame (1), the third sub-frame (51) is hinged with a fourth sub-frame (52), the wave-absorbing panel (11) corresponding to the supporting frame (5) is fixedly connected to the third sub-frame (51) and the fourth sub-frame (52), one end of the fourth sub-frame (52) away from the third sub-frame (51) is fixedly connected with a limiting column (53), the first sliding seat (21) and the intermediate frame (31) are both provided with a limiting groove (54) for clamping the limiting column (53), and the first connecting frame (2) and the second connecting frame (3) are provided with a limiting assembly (6) for limiting the overturning of the third sub-frame (51) and the fourth sub-frame (52). The limiting assembly (6) comprises a stand column (63) fixedly connected to the third sub-frame (51), the axial direction of the stand column (63) is perpendicular to the overturning direction of the third sub-frame (51), the first connecting frame (2) and the second connecting frame (3) are provided with mounting seats (61), the mounting seats (61) are rotatably connected with sleeves (62), and the sleeves (62) are provided with embedding grooves (64) for embedding the stand column (63).

2. The easily assembled and disassembled millimeter wave shielding case according to claim 1, wherein: The vertical plate (4) is provided with a second sliding seat (42), the second sliding seat (42) is hingedly connected with control rods (43) corresponding to the positions of the two second sub-frames (32), the control rods (43) are hingedly connected to the second sub-frames (32) away from the second sliding seat (42), and the vertical plate (4) is provided with a control assembly (44) for controlling the sliding of the second sliding seat (42).

3. The easily assembled and disassembled millimeter wave shield box according to claim 2, characterized in that: The vertical plate (4) is rotatably connected with sprockets (45), the two sprockets (45) are distributed at intervals along the sliding direction of the sliding seat, a chain (46) is wound between the two sprockets (45), the chain (46) is fixedly connected to the first sliding seat (21) and the second sliding seat (42) at the same time, and the first sliding seat (21) and the second sliding seat (42) are driven to move in opposite directions.

4. The easily assembled and disassembled millimeter wave shield box according to claim 1, wherein: The sleeve (62) is fixedly connected with a wing plate (7), the wing plate (7) is provided with a sliding groove (77), the sliding groove (77) is slidably provided with a sliding block (71), the sliding block (71) is fixedly connected with a hanging ring (72), the wing plate (7) is provided with a tension spring (73) for connecting the sliding block (71), the tension spring (73) drives the sliding block (71) to abut against one side of the sliding groove (77) close to the sleeve (62), the mounting seat (61) is fixedly connected with a supporting plate (74), and the supporting plate (74) is provided with a hook groove (75) for clamping the hanging ring (72).

5. The easily assembled and disassembled millimeter wave shield case according to claim 4, wherein: The supporting plate (74) is slidably provided with a moving plate (8), the wing plate (7) is provided with an inclined surface (81) for pushing the hanging ring (72) out of the hook groove (75), the moving plate (8) is rotatably connected with a push rod (83), the push rod (83) is fixedly connected with a crank (84), the supporting plate (74) is provided with a slot (82) for inserting the crank (84), and when the crank (84) is inserted into the slot (82), the inclined surface (81) is away from the hook groove (75).

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