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CN-122017376-A - Electromagnetic shielding testing device and method

CN122017376ACN 122017376 ACN122017376 ACN 122017376ACN-122017376-A

Abstract

The invention discloses an electromagnetic shielding testing device and method, relating to the technical field of electromagnetic shielding, the invention comprises a bottom plate, a magnetic induction device is arranged on the bottom plate, a drawing device is arranged on the magnetic induction device, a reel device is also arranged on the bottom plate, the bottom cover of reel device is equipped with the drive belt, the other end cover of drive belt is established on transmission, transmission's upper end cover is established in one place of drive arrangement, drive arrangement's drive end is provided with reciprocating device, reciprocating device's lower extreme is provided with magnetism generating device. The invention relates to an electromagnetic shielding testing device and method, wherein a reciprocating device is arranged to enable a magnetic generating device to move above an electromagnetic shielding plate in a circulating way all the time, and meanwhile, a magnet is arranged at the bottom of the electromagnetic shielding plate to enable the electromagnetic shielding plate to feel the force of a magnetic field, so that a drawing pen is driven to move in a reciprocating way on a drawing paper, and magnetic force induction at different positions is observed.

Inventors

  • RUAN HUANYANG
  • ZHANG HAIBO
  • YANG JIALI
  • QIN CHUANGAO
  • YANG YONGPO
  • LI QIAN

Assignees

  • 浙江国际海运职业技术学院

Dates

Publication Date
20260512
Application Date
20240220

Claims (9)

  1. 1. The electromagnetic shielding testing device is characterized by comprising a bottom plate (1), wherein a magnetic induction device (200) is arranged on the bottom plate (1), a drawing device (300) is arranged on the magnetic induction device (200), a reel device (400) is further arranged on the bottom plate (1), a transmission belt (5) is sleeved at the bottom end of the reel device (400), the other end of the transmission belt (5) is sleeved on a transmission device (600), a clamping device (700) is further arranged on the bottom plate (1), an electromagnetic shielding plate (8) is arranged on the clamping device (700), the upper end of the transmission device (600) is sleeved at one position of a driving device (900), the bottom end of the driving device (900) is fixedly connected with the upper surface of the bottom plate (1), a driving end of the driving device (900) is provided with a reciprocating device (1000), a magnetic generating device (11) is arranged at the lower end of the reciprocating device (1000), and the magnetic generating device (11) is arranged on the upper side of the electromagnetic shielding plate (8); The magnetic induction device (200) comprises a spring (201), a supporting platform (202) and a magnet (203), wherein the lower end of the spring (201) is connected with the upper surface of the bottom plate (1), the upper end of the spring (201) is connected with the lower surface of the supporting platform (202), and the lower end of the magnet (203) is connected with the upper surface of the supporting platform (202); The drawing device (300) comprises a thread seat (301) and a drawing pen (302), wherein threads are arranged on the outer ring of one end of the drawing pen (302), one end, provided with the threads, of the drawing pen (302) is mutually matched with the thread seat (301), and the lower surface of the thread seat (301) is connected with the upper surface of the supporting platform (202).
  2. 2. The electromagnetic shielding testing device according to claim 1, wherein the reel device (400) comprises a rotating seat (401), a reel shaft (402), a press roller shaft (403) and drawing paper (404), two rotating seats (401) are arranged on the bottom plate (1), two reel shafts (402) are respectively arranged at the central positions of the upper surfaces of the two rotating seats (401), the press roller shaft (403) is arranged on the bottom plate (1), the press roller shaft (403) is in running fit with one rotating seat (401), the drawing paper (404) is in a reel type structure, one end of the drawing paper (404) is sleeved on one rotating seat (401), one surface of the other rotating seat (401) is connected, two ends of the driving belt (5) are respectively sleeved on the two rotating seats (401), and the drawing paper (302) is in running fit with the drawing paper (404).
  3. 3. The electromagnetic shielding testing device according to claim 2, wherein the transmission device (600) comprises a horizontal gear (601), a transmission gear (602), a gear seat (603) and a driving belt (604), a cylindrical rotating protruding block is arranged under the horizontal gear (601), one end of the driving belt (5) is sleeved on the protruding block under the horizontal gear (601), the horizontal gear (601) is meshed with the transmission gear (602), a rotating shaft is arranged on one side of the transmission gear (602), the transmission gear (602) rotates on one side of the gear seat (603) through the rotating shaft, the lower end of the gear seat (603) is connected with the upper surface of the bottom plate (1), and the lower end of the driving belt (604) is sleeved on the rotating shaft on one side of the transmission gear (602).
  4. 4. The electromagnetic shielding testing device according to claim 3, wherein the driving device (900) comprises a supporting frame (901), a driving motor (902) and a driving shaft (903), the lower ends of the two supporting frames (901) are connected with the upper surface of the bottom plate (1), the upper ends of the two supporting frames (901) are respectively connected with the two side surfaces of the driving motor (902), one end of the driving shaft (903) is connected with the output end of the driving motor (902), and the upper end of the driving belt (604) is sleeved on the driving shaft (903).
  5. 5. An electromagnetic shielding testing apparatus according to claim 4, wherein the reciprocator (1000) comprises a rotary disk (1001), an eccentric shaft (1002), a reciprocating lever (1003), an upper holder (1004) and a lower holder (1005), a surface center position of the rotary disk (1001) is connected with one end of a drive shaft (903), an edge of the other surface of the rotary disk (1001) is provided with the eccentric shaft (1002), a strip-shaped through hole is provided in the middle of the reciprocating lever (1003), the eccentric shaft (1002) is movably fitted in the strip-shaped through hole in the middle of the reciprocating lever (1003), one surface of the lower holder (1005) is connected with one surface of a drive motor (902), one end of the upper holder (1004) is provided with a through hole, an upper portion of the reciprocating lever (1003) slides reciprocally in the through hole of the upper holder (1004), one end of the lower holder (1005) is provided with a through hole, and a lower portion of the reciprocating lever (1003) slides reciprocally in the through hole of the lower holder (1005).
  6. 6. An electromagnetic shielding testing apparatus according to claim 5, wherein the lower end of the reciprocating lever (1003) is connected to the upper surface of the magnetic generating means (11).
  7. 7. The electromagnetic shielding testing device according to claim 1, wherein the clamping device (700) comprises clamping rods (701), C-shaped clamping grooves (702) and fixing bolts (703), the lower surfaces of the four C-shaped clamping grooves (702) are respectively connected with the upper ends of the four clamping rods (701), threaded through holes are formed in the upper surfaces of the four C-shaped clamping grooves (702), and the four fixing bolts (703) are respectively matched with the threaded through holes in the four C-shaped clamping grooves (702).
  8. 8. The electromagnetic shielding testing device according to claim 1, wherein a moving wheel (102) and a universal wheel (101) are further arranged below the base plate (1), one side of the tip of the lower surface of the upper end base plate (1) of the universal wheel (101) is fixedly connected, and the two moving wheels (102) are symmetrically arranged on the lower side of the base plate (1).
  9. 9. The application method of the electromagnetic shielding testing device is characterized by comprising the following steps of: s1, mounting equipment: s101, placing the edges of two sides of an electromagnetic shielding plate (8) in four C-shaped clamping grooves (702); S102, rotating four fixing bolts (703) arranged on four C-shaped clamping grooves (702) to enable the bottom ends of the four fixing bolts (703) to press the two side edges of the electromagnetic shielding plate (8) and fix the electromagnetic shielding plate; S103, aligning one end of the drawing pen (302) with threads with a threaded hole of the threaded seat (301), and rotating the drawing pen (302) to push inwards to enable the drawing pen (302) to be fixedly arranged in the threaded seat (301); S2, using equipment: S201, starting the magnetic generating device (11), and enabling the magnet (203) to descend after receiving the magnetic force of the magnetic generating device (11) and simultaneously driving the drawing pen (302) to draw a falling track on the drawing paper (404); S202, starting a driving motor (902), wherein the driving motor (902) drives a driving shaft (903) to rotate, the driving shaft (903) drives a rotating disc (1001) to rotate, and an eccentric shaft (1002) arranged on the rotating disc (1001) rotates and drives a reciprocating rod (1003) to reciprocate up and down by a fixed track of an upper fixing frame (1004) and a lower fixing frame (1005); S203, when the driving shaft (903) drives the rotating disc (1001) to rotate, the driving belt (604) is driven to drive simultaneously, the driving belt (604) drives the transmission gear (602) to rotate, the transmission gear (602) drives the horizontal gear (601) to rotate, the horizontal gear (601) drives the rotating seat (401) to rotate through the driving belt (5), so that the paper winding shaft (402) drives the drawing paper (404) to roll, and when the drawing pen (302) is driven by the magnetic generating device (11) to reciprocate up and down, a magnetic force curve change chart can be drawn on the drawing paper (404); S3, data analysis: S301, when the magnetic generating device (11) reciprocates up and down, a magnetic field applies force to the magnet (203) through the electromagnetic shielding plate (8), the magnet (203) drives the drawing pen (302) to move up and down to draw on the drawing paper (404), meanwhile, the drawing paper (404) is rolled unidirectionally, so that the drawing pen (302) draws a wave curve graph on the drawing paper (404), and the change of magnetic force transmitted by the magnetic generating device (11) at different distances above the electromagnetic shielding plate (8) can be observed; S302, the electromagnetic shielding plate (8) is taken down, the steps are repeated again, the drawing pen (302) can draw a wave curve chart on the drawing paper (404), and when the magnetic force curve chart of the electromagnetic shielding plate (8) is compared with the magnetic force curve chart of the electromagnetic shielding plate (8) which is not installed, the electromagnetic shielding capacity of the electromagnetic shielding plate (8) can be known.

Description

Electromagnetic shielding testing device and method Technical Field The invention relates to the technical field of electromagnetic shielding, in particular to an electromagnetic shielding testing device and method. Background Electromagnetic interference (EM I) occurs along with the development of electronic and electric technologies, electromagnetic interference exists in the technical fields of electronics and electrics, electromagnetic interference generated by electronic systems or equipment in a large number of use can influence human health, meanwhile, the electromagnetic shielding material can influence and harm the safety, reliability and the like of the electronic systems or the electric systems or the equipment, is an antistatic material and has a certain electromagnetic shielding effect, and is mainly used as a filler of a conductive high polymer material, wherein silver is the conductive filler which is developed earliest, and in the production and processing process of the electromagnetic shielding material, the shielding capability test is required to be carried out on the electromagnetic shielding material which is produced, so that people can know the specific performance of the product material. However, the existing electromagnetic shielding testing device has some disadvantages in use, such as: The conventional electromagnetic shielding testing device is mainly used for testing electromagnetic shielding materials, in the testing process, the electromagnetic shielding materials to be tested are placed in a fixing mechanism in a testing container, then testing operation is carried out by starting a testing element, however, the fixing mechanism arranged in the conventional testing container is of a fixed design, so that the electromagnetic shielding materials can only keep a testing state, namely a vertical or horizontal state, and the electromagnetic shielding testing device and the method have relatively single functions when in use, are limited in testing state, cannot realize multi-angle comprehensive fixing testing of the electromagnetic shielding materials, can cause inaccurate testing results, and are used for solving the existing problems. Disclosure of Invention Therefore, the present invention is directed to an electromagnetic shielding testing device and method, which are designed to solve the problems that the conventional fixing mechanism in the testing container is fixed, so that the electromagnetic shielding material can only maintain a testing state, i.e. a vertical or horizontal state, and the function is relatively single when in use, so that the testing state is relatively limited, the multi-angle overall fixing test of the electromagnetic shielding material cannot be realized, and the testing result may be inaccurate. Based on the above object, the invention provides an electromagnetic shielding testing device, which comprises a bottom plate, wherein a magnetic induction device is arranged on the bottom plate, a drawing device is arranged on the magnetic induction device, a reel device is also arranged on the bottom plate, a transmission belt is sleeved at the bottom end of the reel device, the other end of the transmission belt is sleeved on the transmission device, a clamping device is also arranged on the bottom plate, an electromagnetic shielding plate is arranged on the clamping device, the upper end of the transmission device is sleeved at one position of a driving device, the bottom end of the driving device is fixedly connected with the upper surface of the bottom plate, a driving end of the driving device is provided with a reciprocating device, the lower end of the reciprocating device is provided with a magnetic generating device, and the magnetic generating device is arranged on the upper side of the electromagnetic shielding plate; The magnetic induction device comprises a spring, a supporting platform and a magnet, wherein the lower end of the spring is connected with the upper surface of the bottom plate, the upper end of the spring is connected with the lower surface of the supporting platform, and the lower end of the magnet is connected with the upper surface of the supporting platform; The drawing device comprises a thread seat and a drawing pen, wherein threads are arranged on the outer ring of one end of the drawing pen, one end of the drawing pen provided with the threads is mutually matched with the thread seat, and the lower surface of the thread seat is connected with the upper surface of the supporting platform. Further, reel device includes rotation seat, stock form axle, roller and drawing paper, two rotate the seat setting on the bottom plate, two the stock form axle sets up respectively in the upper surface central point of two rotation seats, the roller axle sets up on the bottom plate, roller axle and a rotation seat normal running fit, the drawing paper is the reel type structure, the drawing paper cover is established on one rotation se