Electromagnetic compatibility test equipment

Abstract

The invention relates to the technical field of electromagnetic compatibility testing, in particular to electromagnetic compatibility testing equipment which comprises a bottom plate, a supporting seat, supporting legs and self-locking universal wheels, the four corners of the bottom end of the supporting seat are each provided with a set of supporting legs, and the bottom end of each set of supporting legs is provided with a set of self-locking universal wheels. The device further comprises a lifting rotating assembly, an antenna assembly and a rotary table assembly, the rotary table assembly is installed at the top end of the bottom plate, the four sets of self-locking universal wheels make rolling contact with the top end of the bottom plate, a lifting assembly is arranged at the top end of the supporting seat, and the antenna assembly is installed on the lifting assembly. The lifting assembly is used for adjusting the angle of the antenna assembly while lifting the antenna assembly; when the device is used, a to-be-detected device is placed on the rotary table assembly, the rotary table assembly enables the to-be-detected device to horizontally rotate by 360 degrees, the supporting seat horizontally moves under the cooperation of the four sets of self-locking universal wheels, and flexibility and convenience are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic compatibility testing, and particularly to an electromagnetic compatibility testing device. Background Art

[0002] Electromagnetic compatibility testing refers to the ability of a device or system to operate in its electromagnetic environment and meet requirements without generating intolerable electromagnetic interference to any device in its environment. EMC design and EMC testing complement each other. The quality of EMC design is measured by EMC testing. Only by predicting and evaluating the EMC compatibility throughout the entire process of product EMC design and development can potential electromagnetic interference be detected early, and necessary suppression and protection measures be taken to ensure the electromagnetic compatibility of the system. Otherwise, when incompatibility issues are discovered after the product is finalized or the system is built, a great deal of effort and cost in terms of manpower and material resources will be required to modify the design or adopt remedial measures. One major aspect of electromagnetic compatibility testing is the electromagnetic waves of the device to be tested. When detecting electromagnetic waves, a turntable that can rotate with a slave device on one side and an antenna for receiving electromagnetic waves are usually required.

[0003] In the prior art, a patent document with the publication number CN217085149U discloses an electromagnetic compatibility testing device, including a base, an installation seat is provided on the base, an installation rod is fixedly installed in the installation seat, and an installation plate is installed on the installation rod; an antenna rod installation seat is provided on one side of the installation plate, the antenna rod passes through the installation plate through the antenna rod installation seat, and a limiting device is provided on the other side of the installation plate and fixedly connected to the antenna rod to prevent the antenna rod from rotating by itself; a horizontal antenna and a vertical antenna are provided on the antenna rod, an adjusting device and an adjustable antenna rod are provided on the antenna rod, located between the horizontal antenna and the vertical antenna, and an adjustable antenna is correspondingly installed on the adjustable antenna rod, and the adjusting device is used to adjust the angle of the adjustable antenna rod.

[0004] During use, it is found that when adjusting the height of the antenna rod of the above device, manual adjustment by staff is required, and the convenience needs to be further improved. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides an electromagnetic compatibility testing device.

[0006] An electromagnetic compatibility test device of the present invention includes a bottom plate, a support base, support legs and self-locking universal wheels. Four corners of the bottom end of the support base are respectively provided with a group of support legs, and each group of support legs is respectively provided with a group of self-locking universal wheels at the bottom end. It also includes a lifting and rotating assembly, an antenna assembly and a turntable assembly. The turntable assembly is installed at the top end of the bottom plate, and the four groups of self-locking universal wheels are in rolling contact with the top end of the bottom plate. The top end of the support base is provided with a lifting assembly, and the antenna assembly is installed on the lifting assembly. The lifting assembly is used to lift the antenna assembly and adjust the angle of the antenna assembly at the same time. When in use, the device to be detected is placed on the turntable assembly, and the turntable assembly rotates the device to be detected horizontally by 360 degrees. The support base moves horizontally with the cooperation of the four groups of self-locking universal wheels. Then, according to the height of the device to be detected, the staff drives the antenna assembly to adjust the height through the lifting assembly. The antenna assembly is used to receive the electromagnetic waves emitted by the device to be detected and feedback the received electromagnetic waves to the electromagnetic radiation measuring instrument. When it is necessary to adjust the polarization direction or calibrate the angle of the antenna assembly, the staff adjusts the antenna assembly through the lifting assembly, which improves flexibility and convenience.

[0007] Preferably, the lifting assembly includes a light bar, a top plate, a reciprocating lead screw, a box body, a servo motor, a first bearing, a sleeve, a worm gear, a rotating shaft, a first one-way bearing, a worm, a rotating shaft, a second one-way bearing, a first sprocket, a second sprocket, a chain and a limiting assembly. Two light bars are arranged at the top end of the support base, and the top ends of the two light bars are both connected to the bottom end of the top plate. A reciprocating lead screw is rotatably arranged between the support base and the top plate. The box body is slidably connected to the two light bars. The sleeve penetrates through the box body and is rotatably connected to the box body through the first bearing. The sleeve is sleeved outside the reciprocating lead screw and is threadedly connected to the reciprocating lead screw. A servo motor is installed at the left end of the box body. The output end of the servo motor is provided with a rotating shaft. The right end of the rotating shaft is connected to the worm through the cooperation of the first one-way bearing. The worm gear is sleeved on the outer wall of the sleeve inside the box body, and the worm gear meshes with the worm. The first sprocket is sleeved on the outer wall of the rotating shaft through the cooperation of the second one-way bearing. A rotating shaft is rotatably arranged at the left end inside the box body, and the right end of the rotating shaft extends to the right side of the box body. The second sprocket is sleeved on the outer wall of the rotating shaft inside the box body. The first sprocket is driven by the chain to the second sprocket. A limiting assembly is arranged at the right end of the rotating shaft. When in use, the antenna assembly is installed at the right end of the rotating shaft through the cooperation of the limiting assembly. When the height of the antenna assembly needs to be adjusted, the staff operates the servo motor to rotate forward, so that the rotating shaft drives the worm to rotate through the cooperation of the first one-way bearing. Since the worm meshes with the worm gear, the worm gear drives the sleeve to rotate. Since the sleeve is threadedly connected to the reciprocating lead screw, the sleeve drives the box body to adjust the height while rotating, and further the box body drives the antenna assembly to adjust the height through the rotating shaft. When the angle of the antenna assembly needs to be adjusted, the staff operates the servo motor to rotate in the reverse direction, so that the rotating shaft drives the first sprocket to rotate through the cooperation of the second one-way bearing. The first sprocket drives the second sprocket to rotate through the cooperation of the chain, so that the rotating shaft drives the antenna assembly to adjust the polarization direction or angle calibration, improving flexibility.

[0008] Preferably, the antenna assembly includes a bushing, an antenna support rod, an antenna part A, an antenna part B, a fixing seat and a wing nut. The antenna support rod is arranged at the left end of the bushing. The antenna part A and the antenna part B are arranged on the antenna support rod. A plurality of fixing seats are arranged on the bushing, and a wing nut is screwed on each fixing seat respectively. After the bushing is sleeved on the right end of the rotating shaft, rotate the wing nut, so that the plurality of wing nuts nearly fix the outer wall of the rotating shaft, thus completing the installation of the antenna support rod. The antenna part A and the antenna part B cooperate with each other to receive the radiation emitted by the device to be detected.

[0009] Preferably, the limiting component includes a first rotating shaft, a first fixed pulley, a second rotating shaft, a second fixed pulley, a lifting rod, a rope, a limiting rod, a tension spring and a telescopic rod. A square groove is provided at the right end of the rotating shaft. A set of first rotating shafts and a set of second rotating shafts are respectively rotatably arranged in the square groove. A set of first fixed pulleys are installed on the first rotating shafts, and a set of second fixed pulleys are installed on the second rotating shafts. A set of lifting rods and a set of limiting rods are respectively slidably arranged at the top of the square groove. A set of tension springs and a set of telescopic rods are respectively provided at the bottom ends of the limiting rods. The bottom ends of the tension springs and the telescopic rods are both connected to the bottom end of the square groove. A rope is arranged between the lifting rod and the limiting rod, and the rope respectively bypasses the tops of the first fixed pulley and the second fixed pulley; in the normal state, the tension spring pulls the limiting rod downward, so that the top end of the limiting rod is flush with the outer side wall of the top of the rotating shaft. When the bushing is sleeved on the right end of the rotating shaft, the inner side of the bushing squeezes the top end of the lifting rod to move downward. While the lifting rod moves downward, the lifting rod pulls the rope, so that the rope pulls the limiting rod upward under the cooperation of the first fixed pulley and the second fixed pulley, so that the limiting rod protrudes, and the limiting rod limits the left end of the bushing.

[0010] Preferably, the turntable assembly includes an electric turntable, a loading platform, a vertical plate and a locking bolt. The electric turntable is installed at the top end of the bottom plate. Two groups of vertical plates are provided at the top end of the electric turntable. A loading platform is placed between the two groups of vertical plates. A locking bolt is screwed on each group of vertical plates. Threaded grooves are provided on the loading platform, and the locking bolts are threadedly connected with the threaded grooves; the device to be detected is placed on the loading platform, and the electric turntable is started, so that the loading platform drives the device to be detected to rotate 360 degrees horizontally under the cooperation of the vertical plates, and performs omnidirectional electromagnetic radiation detection on it.

[0011] Preferably, it further includes a vertical plate, a fixed shaft, a U-shaped frame, a sealing plate, a support arm and a handle. Two groups of vertical plates are provided at the left end of the support seat. A fixed shaft is fixedly arranged between the two groups of vertical plates. The U-shaped frame is sleeved outside the fixed shaft. A sealing plate is provided at the top end of the U-shaped frame. A support arm is provided at the top end of the sealing plate, and a handle is provided at the top end of the support arm; when the position of the support seat needs to be moved, the staff holds the handle and pulls the U-shaped frame upward, so that the inner bottom of the U-shaped frame contacts the fixed shaft. After that, the U-shaped frame can be adjusted in angle. The staff pulls the support seat. After pulling, when the support arm is perpendicular to the horizontal plane, the U-shaped frame moves downward, so that the fixed shaft contacts the bottom end of the sealing plate, and the fixed shaft and the support seat cooperate to vertically limit the U-shaped frame, improving the convenience.

[0012] Preferably, it further includes an annular flat gasket. A set of annular flat gaskets are respectively sleeved on each group of locking bolts; the locking bolts increase the contact area with the vertical plate through the annular flat gasket, improving the connection firmness.

[0013] Preferably, it further includes an anti-slip mat, and an anti-slip mat is arranged at the top of the loading platform; when the electric turntable drives the loading platform to rotate, the loading platform drives the device to be detected to rotate with the cooperation of the anti-slip mat, reducing the relative sliding between the anti-slip mat and the device to be detected and improving the detection accuracy.

[0014] Preferably, it further includes a limiting plate, and limiting plates are respectively arranged at the front and rear ends of the limiting rod; the limiting plate limits the rising height of the limiting rod, improving the protection performance.

[0015] Preferably, it further includes a handle grip, and a handle grip is sleeved on the handle.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: during use, the device to be detected is placed on the turntable assembly, and the turntable assembly enables the device to be detected to perform a 360-degree horizontal rotation. The support base moves horizontally with the cooperation of four sets of self-locking universal wheels. Then, according to the height of the device to be detected, the staff drives the antenna assembly to adjust the height through the lifting assembly. The antenna assembly is used to receive the electromagnetic waves emitted by the device to be detected and feedback the received electromagnetic waves to the electromagnetic radiation measuring instrument. When it is necessary to adjust the polarization direction or calibrate the angle of the antenna assembly, the staff adjusts the antenna assembly through the lifting assembly, improving flexibility and convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the axonometric structural schematic diagram of the present invention; Figure 2 is the exploded structural schematic diagram of the present invention; Figure 3 is the enlarged structural schematic diagram of the electric turntable and the anti-slip mat and other structures; Figure 4 is the enlarged structural schematic diagram of the antenna part B and the support base and other structures; Figure 5 is the exploded structural schematic diagram of the antenna part A and the box body and other structures; Figure 6 is the enlarged structural schematic diagram of the reciprocating lead screw and the handle and other structures; Figure 7 is Figure 6 the partial enlarged structural schematic diagram of part A in Figure 8 is the enlarged structural schematic diagram of the shaft sleeve and the antenna part A and other structures; Figure 9 is the sectional structural schematic diagram of the box body and the pipe sleeve and other structures; Figure 10 is Figure 9 the partial enlarged structural schematic diagram of part B in Figure 11 is the sectional structural schematic diagram of the rotating shaft and the limiting rod and other structures; Figure 12 It is an enlarged structural schematic diagram of structures such as a lifting rod and a rope; Figure 13 It is a physical diagram of the present invention.

[0018] Reference numerals in the drawings: 101, bottom plate; 102, support seat; 103, support leg; 104, self-locking universal wheel; 201, optical bar; 202, top plate; 203, reciprocating lead screw; 204, box body; 205, servo motor; 206, first bearing; 207, round tube; 208, worm gear; 209, rotating shaft; 210, first one-way bearing; 211, worm; 212, rotating shaft; 213, second one-way bearing; 214, first sprocket; 215, second sprocket; 216, chain; 301, bushing; 302, antenna support rod; 303, antenna part A; 304, antenna part B; 305, fixed seat; 306, wing nut; 401, first rotating shaft; 402, first fixed pulley; 403, second rotating shaft; 404, second fixed pulley; 405, lifting rod; 406, rope; 407, limiting rod; 408, tension spring; 409, telescopic rod; 410, limiting plate; 501, electric turntable; 502, loading platform; 503, vertical plate; 504, double wing nut; 505, annular flat washer; 506, anti-slip pad; 601, vertical plate; 602, fixed shaft; 603, U-shaped frame; 604, sealing plate; 605, support arm; 606, handle; 607, handle sleeve. Detailed implementation manners

[0019] To facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the disclosure of the present invention more thorough and comprehensive. Embodiment

[0020] As Figures 1 to 12 shown, an electromagnetic compatibility test device of the present invention includes a bottom plate 101, a support seat 102, support legs 103 and self-locking universal wheels 104. Four corners of the bottom end of the support seat 102 are respectively provided with a group of support legs 103, and each group of support legs 103 is respectively provided with a group of self-locking universal wheels 104 at the bottom end. The device further includes a lifting and rotating assembly, an antenna assembly and a turntable assembly. The turntable assembly is installed at the top end of the bottom plate 101, and the four groups of self-locking universal wheels 104 are in rolling contact with the top end of the bottom plate 101. The top end of the support seat 102 is provided with a lifting assembly, and the antenna assembly is installed on the lifting assembly. The lifting assembly is used for lifting the antenna assembly and adjusting the angle of the antenna assembly at the same time; The lifting assembly includes a light bar 201, a top plate 202, a reciprocating lead screw 203, a box body 204, a servo motor 205, a first bearing 206, a tube sleeve 207, a worm gear 208, a rotating shaft 209, a first one-way bearing 210, a worm 211, a rotating shaft 212, a second one-way bearing 213, a first sprocket 214, a second sprocket 215, a chain 216 and a limiting assembly. Two groups of light bars 201 are arranged at the top end of the support base 102, and the top ends of the two groups of light bars 201 are both connected to the bottom end of the top plate 202. A reciprocating lead screw 203 is rotatably arranged between the support base 102 and the top plate 202. The box body 204 is slidably connected to the two groups of light bars 201. The tube sleeve 207 passes through the box body 204 and is rotatably connected to the box body 204 through the first bearing 206. The tube sleeve 207 is sleeved outside the reciprocating lead screw 203 and is threadedly connected to the reciprocating lead screw 203. A servo motor 205 is installed at the left end of the box body 204. The output end of the servo motor 205 is provided with a rotating shaft 209. The right end of the rotating shaft 209 is connected to the worm 211 under the cooperation of the first one-way bearing 210. The worm gear 208 is sleeved on the outer wall of the tube sleeve 207 inside the box body 204. The worm gear 208 meshes with the worm 211. The first sprocket 214 is sleeved on the outer wall of the rotating shaft 209 under the cooperation of the second one-way bearing 213. A rotating shaft 212 is rotatably arranged at the left end inside the box body 204. The right end of the rotating shaft 212 extends to the right side of the box body 204. The second sprocket 215 is sleeved on the outer wall of the rotating shaft 212 inside the box body 204. The first sprocket 214 is driven by the chain 216 to the second sprocket 215. A limiting assembly is arranged at the right end of the rotating shaft 212; The antenna assembly includes a bushing 301, an antenna support rod 302, an antenna part A 303, an antenna part B 304, a fixed seat 305 and a wing nut 306. The antenna support rod 302 is arranged at the left end of the bushing 301. The antenna part A 303 and the antenna part B 304 are arranged on the antenna support rod 302. A plurality of groups of fixed seats 305 are arranged on the bushing 301. A wing nut 306 is respectively screwed on each group of fixed seats 305.

[0021] In this embodiment, after the bushing 301 is sleeved on the right end of the rotating shaft 212, the wing bolt 306 is rotated, so that multiple groups of wing bolts 306 nearly fix the outer wall of the rotating shaft 212, thus completing the installation of the antenna support rod 302. The device to be detected is placed on the turntable assembly, and the turntable assembly enables the device to be detected to rotate horizontally by 360 degrees. The support base 102 moves horizontally in cooperation with the four self-locking universal wheels 104. When the height of the antenna assembly needs to be adjusted, the staff operates the servo motor 205 to rotate forward, so that the rotating shaft 209 drives the worm 211 to rotate in cooperation with the first one-way bearing 210. Since the worm 211 meshes with the worm gear 208, the worm gear 208 drives the sleeve 207 to rotate. Since the sleeve 207 is threadedly connected to the reciprocating lead screw 203, the sleeve 207 drives the box body 204 to adjust the height while rotating, and further enables the box body 204 to drive the antenna assembly to adjust the height through the rotating shaft 212. When the angle of the antenna assembly needs to be adjusted, the staff operates the servo motor 205 to rotate in the reverse direction, so that the rotating shaft 209 drives the first sprocket 214 to rotate in cooperation with the second one-way bearing 213. The first sprocket 214 drives the second sprocket 215 to rotate in cooperation with the chain 216, so that the rotating shaft 212 drives the antenna assembly to adjust the polarization direction or perform angle calibration. The antenna part A 303 and the antenna part B 304 cooperate with each other to receive the radiation emitted by the device to be detected. Embodiment

[0022] As Figures 1 to 12 shown, an electromagnetic compatibility test device of the present invention includes a bottom plate 101, a support base 102, support legs 103 and self-locking universal wheels 104. Four groups of support legs 103 are respectively arranged at the four corners of the bottom end of the support base 102, and a group of self-locking universal wheels 104 are respectively arranged at the bottom end of each group of support legs 103. The device further includes a lifting and rotating assembly, an antenna assembly and a turntable assembly. The turntable assembly is installed at the top end of the bottom plate 101, and the four self-locking universal wheels 104 are in rolling contact with the top end of the bottom plate 101. The top end of the support base 102 is provided with a lifting assembly, and the antenna assembly is installed on the lifting assembly. The lifting assembly is used to lift the antenna assembly and adjust the angle of the antenna assembly at the same time; The antenna assembly includes a bushing 301, an antenna support rod 302, an antenna part A 303, an antenna part B 304, a fixing seat 305 and a wing bolt 306. The antenna support rod 302 is arranged at the left end of the bushing 301, and the antenna part A 303 and the antenna part B 304 are arranged on the antenna support rod 302. Multiple groups of fixing seats 305 are arranged on the bushing 301, and a group of wing bolts 306 are respectively screwed on each group of fixing seats 305; The limiting component includes a first rotating shaft 401, a first fixed pulley 402, a second rotating shaft 403, a second fixed pulley 404, a lifting rod 405, a rope 406, a limiting rod 407, a tension spring 408 and a telescopic rod 409. A square groove is provided at the right end of the rotating shaft 212. A set of first rotating shafts 401 and a set of second rotating shafts 403 are respectively rotatably arranged in the square groove. A set of first fixed pulleys 402 are installed on the first rotating shafts 401, and a set of second fixed pulleys 404 are installed on the second rotating shafts 403. A set of lifting rods 405 and a set of limiting rods 407 are respectively slidably arranged at the top of the square groove. A set of tension springs 408 and a set of telescopic rods 409 are respectively provided at the bottom ends of the limiting rods 407. The bottom ends of the tension springs 408 and the telescopic rods 409 are both connected to the bottom end of the square groove. A rope 406 is arranged between the lifting rod 405 and the limiting rod 407, and the rope 406 respectively bypasses the tops of the first fixed pulley 402 and the second fixed pulley 404; The turntable component includes an electric turntable 501, a load platform 502, a vertical plate 503 and a locking bolt 504. The electric turntable 501 is installed at the top end of the bottom plate 101. Two groups of vertical plates 503 are provided at the top end of the electric turntable 501. The load platform 502 is placed between the two groups of vertical plates 503. A locking bolt 504 is screwed on each group of vertical plates 503. Threaded grooves are provided on the load platform 502, and the locking bolt 504 is threadedly connected to the threaded groove; It further includes a vertical plate 601, a fixed shaft 602, a U-shaped frame 603, a sealing plate 604, a support arm 605 and a handle 606. Two groups of vertical plates 601 are provided at the left end of the support seat 102. A fixed shaft 602 is fixedly arranged between the two groups of vertical plates 601. The U-shaped frame 603 is sleeved outside the fixed shaft 602. A sealing plate 604 is provided at the top end of the U-shaped frame 603. A support arm 605 is provided at the top end of the sealing plate 604, and a handle 606 is provided at the top end of the support arm 605; It further includes an annular flat gasket 505, an anti-slip pad 506, a limiting plate 410 and a handle sleeve 607. A set of annular flat gaskets 505 are respectively sleeved on each group of locking bolts 504. An anti-slip pad 506 is provided at the top end of the load platform 502. Limiting plates 410 are respectively provided at the front and rear ends of the limiting rod 407, and a handle sleeve 607 is sleeved on the handle 606.

[0023] In this embodiment, when the bushing 301 is sleeved on the right end of the rotating shaft 212, the inner side of the bushing 301 squeezes the top of the lifting rod 405 to move downward. While the lifting rod 405 moves downward, the lifting rod 405 pulls the rope 406, so that the rope 406 pulls the limiting rod 407 upward under the cooperation of the first fixed pulley 402 and the second fixed pulley 404, so that the limiting rod 407 protrudes. The limiting rod 407 limits the left end of the bushing 301. Rotate the wing bolt 306, so that multiple wing bolts 306 nearly fix the outer wall of the rotating shaft 212, thus completing the installation of the antenna support rod 302. Place the device to be detected on the stage 502, and start the electric turntable 501, so that the stage 502 drives the device to be detected to rotate horizontally by 360 degrees under the cooperation of the vertical plate 503. When the position of the support base 102 needs to be moved, the staff holds the handle 606 and pulls the U-shaped frame 603 upward, so that the inner bottom of the U-shaped frame 603 contacts the fixed shaft 602. After that, the U-shaped frame 603 can be adjusted in angle. The staff pulls the support base 102. After the pulling is completed, when the support arm 605 is perpendicular to the horizontal plane, the U-shaped frame 603 moves downward, so that the fixed shaft 602 contacts the bottom end of the sealing plate 604. The fixed shaft 602 and the support base 102 cooperate to vertically limit the U-shaped frame 603. Then, according to the height of the device to be detected, the staff drives the antenna assembly to adjust the height through the lifting assembly. The antenna assembly is used to receive the electromagnetic waves emitted by the device to be detected and feedback the received electromagnetic waves to the electromagnetic radiation measuring instrument. When the polarization direction of the antenna assembly needs to be adjusted or the angle needs to be calibrated, the staff adjusts the antenna assembly through the lifting assembly. The antenna part A 303 and the antenna part B 304 cooperate with each other to receive the radiation emitted by the device to be detected.

[0024] The antenna part A 303, the antenna part B 304, the servo motor 205 and the electric turntable 501 of an electromagnetic compatibility test device of the present invention are purchased on the market. Those skilled in the art only need to install and operate according to the attached user manual, without the need for creative labor of those skilled in the art.

[0025] The above are only the preferred embodiments of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An electromagnetic compatibility testing device, comprising a base plate (101), a support seat (102), support legs (103) and self-locking universal wheels (104), wherein a group of support legs (103) are respectively arranged at four corners of the bottom end of the support seat (102), and a group of self-locking universal wheels (104) are respectively arranged at the bottom end of each group of support legs (103), characterized in that: It also comprises a lifting and rotating assembly, an antenna assembly and a turntable assembly, wherein the turntable assembly is mounted on the top of the base plate (101), four sets of self-locking universal wheels (104) are in rolling contact with the top of the base plate (101), a lifting assembly is arranged on the top of the support seat (102), an antenna assembly is mounted on the lifting assembly, and the lifting assembly is used to lift the antenna assembly and adjust the angle of the antenna assembly at the same time.

2. An electromagnetic compatibility testing device as claimed in claim 1, characterized in that: The lifting assembly comprises a light bar (201), a top plate (202), a reciprocating screw (203), a box (204), a servo motor (205), a No. 1 bearing (206), a sleeve (207), a worm wheel (208), a rotating shaft (209), a No. 1 one-way bearing (210), a worm (211), a rotating shaft (212), a No. 2 one-way bearing (213), a No. 1 sprocket (214), a No. 2 sprocket (215), a chain (216) and a limit assembly, wherein the support seat (1 02) is provided with two groups of optical rods (201) at the top, the tops of the two groups of optical rods (201) are connected to the bottom of the top plate (202), a reciprocating screw (203) is rotatably provided between the support seat (102) and the top plate (202), the box body (204) is slidably connected to the two groups of optical rods (201), a pipe sleeve (207) penetrates the box body (204) and is rotatably connected to the box body (204) through a No. 1 bearing (206), the pipe sleeve (207) is sleeved on the outside of the reciprocating screw (203) and The housing (204) is threadedly connected to the reciprocating screw (203). A servo motor (205) is installed at the left end of the housing (204). A rotating shaft (209) is provided at the output end of the servo motor (205). The right end of the rotating shaft (209) is connected to the worm (211) in cooperation with a first one-way bearing (210). The worm wheel (208) is sleeved on the outer wall of the sleeve (207) inside the housing (204). The worm wheel (208) is meshed with the worm (211). The first sprocket (214) is connected to the second one-way bearing (210). The bearing (213) is sleeved on the outer wall of the rotating shaft (209) with the cooperation of the bearing (213); a rotating shaft (212) is rotatably arranged at the left end inside the box (204); the right end of the rotating shaft (212) extends to the right side of the box (204); a second sprocket (215) is sleeved on the outer wall of the rotating shaft (212) inside the box (204); the first sprocket (214) and the second sprocket (215) are driven by a chain (216); and a limit assembly is arranged at the right end of the rotating shaft (212).

3. An electromagnetic compatibility test device as claimed in claim 2, characterized in that: The antenna assembly comprises a shaft sleeve (301), an antenna support rod (302), an antenna A part (303), an antenna B part (304), a fixing seat (305) and a butterfly bolt (306); the left end of the shaft sleeve (301) is provided with an antenna support rod (302); the antenna A part (303) and the antenna B part (304) are provided on the antenna support rod (302); a plurality of groups of fixing seats (305) are provided on the shaft sleeve (301); and each group of fixing seats (305) is respectively threaded with a group of butterfly bolts (306).

4. An electromagnetic compatibility testing device as claimed in claim 2, characterized in that: The limiting assembly comprises a first rotating shaft (401), a first fixed pulley (402), a second rotating shaft (403), a second fixed pulley (404), a lifting rod (405), a rope (406), a limiting rod (407), a tension spring (408) and a telescopic rod (409). A square groove is arranged at the right end of the rotating shaft (212), and a group of first rotating shafts (401) and a group of second rotating shafts (403) are rotatably arranged in the square grooves. A group of first fixed pulleys (402) is installed on the first rotating shaft (401), and a group of second rotating shafts (403) are installed on the second rotating shaft (403). A set of second fixed pulleys (404) are installed, a set of lifting rods (405) and a set of limiting rods (407) are slidably arranged at the top of the square groove, a set of tension springs (408) and a set of telescopic rods (409) are arranged at the bottom of the limiting rods (407), the bottom ends of the tension springs (408) and the telescopic rods (409) are connected to the bottom end of the square groove, a rope (406) is arranged between the lifting rods (405) and the limiting rods (407), and the rope (406) is passed around the top of the first fixed pulley (402) and the top of the second fixed pulley (404).

5. The electromagnetic compatibility testing device according to claim 1, characterized in that: The turntable assembly comprises an electric turntable (501), a loading platform (502), a vertical plate (503) and a locking bolt (504); the electric turntable (501) is installed on the top of the base plate (101); two groups of vertical plates (503) are arranged on the top of the electric turntable (501); the loading platform (502) is placed between the two groups of vertical plates (503); each group of vertical plates (503) is screwed with a locking bolt (504); a threaded groove is arranged on the loading platform (502); and the locking bolt (504) is threadedly connected to the threaded groove.

6. The electromagnetic compatibility test equipment according to claim 1, characterized in that: The invention also comprises a vertical plate (601), a fixed shaft (602), a U-shaped frame (603), a sealing plate (604), a support arm (605) and a handle (606). Two groups of vertical plates (601) are arranged at the left end of the support seat (102), a fixed shaft (602) is fixedly arranged between the two groups of vertical plates (601), the U-shaped frame (603) is sleeved on the outside of the fixed shaft (602), a sealing plate (604) is arranged at the top end of the U-shaped frame (603), a support arm (605) is arranged at the top end of the sealing plate (604), and a handle (606) is arranged at the top end of the support arm (605).

7. The electromagnetic compatibility testing device according to claim 5, characterized in that: It also includes an annular flat washer (505), and each set of locking bolts (504) is respectively provided with a set of annular flat washers (505).

8. The electromagnetic compatibility testing device according to claim 5, characterized in that: It also includes an anti-skid pad (506), and the top of the loading platform (502) is provided with an anti-skid pad (506).

9. The electromagnetic compatibility testing device according to claim 4, characterized in that: It also includes a limit plate (410), and the limit plates (410) are respectively arranged at the front and rear ends of the limit rod (407).

10. The electromagnetic compatibility testing device according to claim 6, characterized in that: It also includes a handle cover (607), and the handle cover (607) is sleeved on the handle (606).

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