A near-field electric field antenna adjustable device

Abstract

The present invention provides an adjustable device for near-field electric field antenna, which belongs to the technical field of new energy electric vehicle testing, and includes a base, a mounting seat and an adjustment mechanism. The bottom of the base is provided with a plurality of pulleys with a braking function, the upper part of the base is rotatably connected with an adjustment seat, the adjustment seat is connected to the mounting seat for mounting the antenna through a lifting frame, an adjustable driving rod is rotatably connected to the mounting seat, the adjustment mechanism is installed on the base, the adjustable driving rod is engaged or separated with the adjustment mechanism, the adjustment mechanism is transmission-connected with the adjustment seat, and the adjustment seat is driven to rotate by the lifting of the mounting seat, and a plurality of balance adjustment members are connected to the base. The present invention can adjust the horizontal angle of the antenna while adjusting the height of the antenna through the cooperation of the lifting frame, the adjustable driving rod and the adjustment structure, and the antenna angle adjustment is simple and convenient, and the height and horizontal angle of the antenna can also be adjusted separately according to actual needs to improve the receiving direction, coverage and gain.

Description

Technical Field

[0001] The present invention relates to the technical field of new energy electric vehicle testing, and in particular to an adjustable near-field electric field antenna device. Background Art

[0002] EMC testing is a test content often involved in the development process of automobiles or parts. The automobile test chamber is a standard darkroom for EMC testing. The main purpose of EMC testing is to ensure that the vehicle or parts can work normally without being affected in the electromagnetic environment in which they work, and at the same time, do not cause electromagnetic interference to other components or systems. EMC testing can generally be divided into two categories: electromagnetic interference test EMI (Electro-Magnetic Interference) and electromagnetic immunity test EMS (Electro-Magnetic Susceptibility). The former ensures that it does not affect other equipment, and the latter ensures that it is not affected by other equipment.

[0003] In EMC testing, antennas are needed to generate and transmit electromagnetic waves to interfere with the electromagnetic field of the entire vehicle or its components. The antenna height and angle are in a trigonometric relationship with the vehicle reference point. To improve the test effect, the antenna needs to be adjusted to a suitable angle. However, the existing antenna height and angle need to be adjusted separately, which is troublesome and time-consuming. Summary of the invention

[0004] The present invention proposes an adjustable device for a near-field electric field antenna, which can simultaneously adjust the antenna height and horizontal angle. The antenna angle adjustment is simple and convenient. The height and horizontal angle of the antenna can also be adjusted separately according to actual needs to improve the receiving direction, increase the coverage and gain.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A near-field electric field antenna adjustable device comprises a base, a mounting seat and an adjustment mechanism, wherein a plurality of pulleys with a braking function are provided at the bottom of the base, an adjustment seat is rotatably connected to the upper part of the base, the adjustment seat is connected to the mounting seat for mounting the antenna via a lifting frame, an adjustable driving rod is rotatably connected to the mounting seat, the adjustment mechanism is installed on the base, the adjustable driving rod is engaged with or separated from the adjustment mechanism, the adjustment mechanism is transmission-connected to the adjustment seat, and the adjustment seat is driven to rotate by lifting and lowering the mounting seat, and a plurality of balance adjustment members are connected to the base.

[0007] Furthermore, the adjustment mechanism includes a transmission wheel group, a drive shaft and an adjustment gear, the adjustable drive rod is meshed with the transmission wheel group, the transmission wheel group is connected to the drive shaft through a belt, the adjustment gear is sleeved on the drive shaft, and the adjustment gear is meshed with the adjustment seat to drive the adjustment seat to rotate in a horizontal direction.

[0008] Furthermore, the adjustment mechanism also includes a bracket fixed on the base, and the transmission wheel set and the driving shaft are respectively rotatably connected to the bracket.

[0009] Furthermore, the transmission wheel group includes a transmission gear and a pulley a, the transmission gear and pulley a are coaxially arranged, the adjustable drive rod is meshed with the transmission gear, a pulley b is provided on the drive shaft, and the pulley a is connected to the pulley b through a belt drive.

[0010] Furthermore, the adjustable driving rod includes a driving telescopic rod and a driving gear rod, the fixed end of the driving telescopic rod is hinged to the mounting seat, the telescopic end of the driving telescopic rod is connected to the driving gear rod, and the driving gear rod is meshed with the transmission wheel set.

[0011] Furthermore, the driving telescopic rod is an electric telescopic rod or a hydraulic telescopic rod.

[0012] Furthermore, the adjustment seat is provided with a conical gear block along the circumferential direction, and the adjustment gear is meshed with the conical gear block.

[0013] Furthermore, the lifting frame includes a scissor-type lifting frame and a plurality of telescopic rods, the two ends of the scissor-type lifting frame are respectively hinged to the adjustment seat and the mounting seat, the two ends of the plurality of telescopic rods are respectively connected to the adjustment seat and the mounting seat, and the plurality of telescopic rods are located outside the scissor-type lifting frame.

[0014] Furthermore, the scissor-type lifting frame is threadedly connected to a screw rod, and a handle is provided at the end of the screw rod.

[0015] Furthermore, a through slot is provided on the mounting seat, a first support seat connected to the mounting seat is provided below the through slot, a second support seat is provided on the adjustment seat, and both ends of the scissor-type lifting frame are respectively connected to the first support seat and the second support seat.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The present invention provides an adjustable device for a near-field electric field antenna. The height of the height mounting seat is adjusted by a lifting frame, and then the height of the antenna is adjusted. The lifting mounting seat can drive the adjustable driving rod to move up and down. When the horizontal angle of the antenna needs to be adjusted while the height of the antenna is adjusted, the adjustable driving rod is rotated to contact and engage with the adjusting mechanism. The adjustable driving rod moves up and down to drive the adjusting mechanism to rotate, and the adjusting mechanism engages with the adjusting seat, thereby realizing the angle adjustment in the horizontal direction of the adjusting seat; when only the horizontal angle of the antenna needs to be adjusted, the adjustable driving rod can be extended and retracted, thereby driving the adjusting seat to rotate horizontally through the adjusting mechanism; when only the height of the antenna needs to be adjusted, the adjustable driving rod is rotated to separate the adjustable driving rod from the adjusting mechanism, and the height of the mounting seat is adjusted by the lifting frame; through the cooperation of the adjustable driving rod and the adjusting structure, the horizontal angle of the antenna can be adjusted while the height of the antenna is adjusted. The antenna angle adjustment is simple and convenient, and the height and horizontal angle of the antenna can also be adjusted separately according to actual needs to improve the receiving direction, coverage and gain. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of an adjustable device for a near-field electric field antenna according to the present invention;

[0019] Figure 2 for Figure 1 A schematic diagram of the enlarged structure of the local A in the middle;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of an adjustable device for a near-field electric field antenna according to the present invention;

[0021] Figure 4 for Figure 3 A schematic diagram of the enlarged structure of the local B in the middle;

[0022] Figure 5 It is a schematic diagram of the three-dimensional structure of an adjustable device for a near-field electric field antenna according to the present invention;

[0023] Figure 6 It is a schematic cross-sectional structure diagram of an adjustable device for a near-field electric field antenna according to the present invention;

[0024] In the figure, 1 is a base, 2 is a mounting seat, 3 is an adjusting mechanism, 4 is a transmission wheel group, 5 is a transmission gear, 6 is a pulley a, 7 is a driving shaft, 8 is a pulley b, 9 is an adjusting gear, 10 is a belt, 11 is a bracket, 12 is a pulley, 13 is an adjusting seat, 14 is a lifting frame, 15 is a scissor-type lifting frame, 16 is a telescopic rod, 17 is a screw rod, 18 is a handle, 19 is an adjustable driving rod, 20 is a driving telescopic rod, 21 is a driving gear rod, 22 is a balancing adjusting member, 23 is a conical gear block, 24 is a through groove, 25 is a first supporting seat, and 26 is a second supporting seat. DETAILED DESCRIPTION

[0025] In order to better understand the technical content of the present invention, specific embodiments are provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0026] Example 1

[0027] See also Figures 1 to 6 The present invention provides an adjustable device for a near-field electric field antenna, comprising a base 1, a mounting seat 2 and an adjustment mechanism 3. The bottom of the base 1 is provided with a plurality of pulleys 12 with a braking function, which are convenient for movement. After moving to a corresponding position, the device is fixed to facilitate adjustment of the angle of the antenna. The upper part of the base 1 is rotatably connected with an adjustment seat 13, and the adjustment seat 13 is connected to the mounting seat 2 for mounting the antenna through a lifting frame 14. The adjustment seat 13 can adjust the angle of the antenna in the horizontal direction, and the lifting frame 14 can adjust the height of the antenna, thereby improving the receiving direction, coverage and gain. The mounting seat 2 is rotatably connected with an adjustable driving rod 19. The adjusting mechanism 3 is installed on the base 1, and the adjusting driving rod 19 is engaged or disengaged with the adjusting mechanism 3. The adjusting mechanism 3 is connected to the adjusting seat 13 by transmission, and the adjusting seat 13 is driven to rotate by the lifting and lowering of the mounting seat 2. When the angle of the adjusting seat 13 needs to be adjusted, the adjusting driving rod 19 can be rotated to contact and engage with the adjusting mechanism 3, so that the adjusting driving rod 19 drives the adjusting seat 13 to rotate when the mounting seat 2 is lifted or lowered, so as to achieve the purpose of adjusting the antenna height and horizontal direction at the same time, and the antenna height and horizontal height can also be adjusted separately. A plurality of balancing adjustment members 22 are connected to the base 1 to keep the base 1 placed horizontally.

[0028] See also Figure 1 , 2 , 3 and 4, the adjusting mechanism 3 includes a transmission wheel group 4, a driving shaft 7 and an adjusting gear 9, the adjusting driving rod 19 is meshed with the transmission wheel group 4, and the lifting of the adjustable driving rod 19 can drive the transmission wheel group 4 to rotate, the transmission wheel group 4 is connected to the driving shaft 7 through a belt 10, and the transmission wheel group 4 drives the driving shaft 7 to rotate through the belt 10, the adjusting gear 9 is sleeved on the driving shaft 7, and the adjusting seat 13 is provided with a conical tooth block 23 along the circumferential direction, the adjusting gear 9 is meshed with the conical tooth block 23, and the adjusting gear 9 is meshed with the adjusting seat 13 to drive the adjusting seat 13 to rotate in the horizontal direction, wherein the adjusting mechanism 3 also includes a bracket 11 fixed on the base 1, and the transmission wheel group 4 and the driving shaft 7 are respectively rotatably connected to the bracket 11 to play a supporting and fixing role.

[0029] See also Figure 1 , 2and 4, the transmission wheel group 4 includes a transmission gear 5 and a pulley a6, the transmission gear 5 and the pulley a6 are coaxially arranged, and when the transmission gear 5 is driven, the pulley a6 is coaxially rotated, the adjustable driving rod 19 is meshed with the transmission gear 5, and a pulley b8 is provided on the driving shaft 7, and the pulley a6 is connected to the pulley b8 through a belt 10, and the pulley b8 is driven to rotate through the transmission gear 5, and the adjustable driving rod 19 includes a driving telescopic rod 20 and a driving gear rod 21, and the fixed end of the driving telescopic rod 20 is hinged with the mounting seat 2, which can be adjusted according to the Whether it is necessary to adjust the angle of the adjustment seat 13, rotate the driving telescopic rod 20 to make the driving gear rod 21 engage or disengage with the transmission gear 5. In the engaged state, the angle of the adjustment seat 13 can be adjusted, and in the disengaged state, there is no need to adjust the angle of the adjustment seat 13. The telescopic end of the driving telescopic rod 20 is connected to the driving gear rod 21. When only the horizontal angle of the antenna needs to be adjusted, the horizontal angle of the adjustment seat 13 can be adjusted by extending and retracting the driving telescopic rod 20. The driving gear rod 21 is engaged with the transmission wheel group 4. The driving telescopic rod 20 is an electric telescopic rod 16 or a hydraulic telescopic rod 16.

[0030] When in use, the device is moved to the corresponding position, the brake pulley 12 fixes and stabilizes the device, and the height of the height mounting seat 2 is adjusted by the lifting frame 14, so as to achieve the function of adjusting the height of the antenna. The lifting mounting seat 2 can drive the adjustable driving rod 19 to move up and down. When the antenna height needs to be adjusted while the horizontal angle of the antenna needs to be adjusted, the adjustable driving rod 19 is rotated so that the driving gear rod 21 of the adjustable driving rod 19 contacts and meshes with the transmission gear 5. The driving gear rod 21 moves up and down to drive the transmission gear 5 to rotate, and then drives the adjusting gear 9 to rotate through the driving shaft 7, and the adjusting gear 9 meshes with the adjusting seat 13, so as to achieve the angle adjustment of the adjusting seat 13 in the horizontal direction; when only the horizontal angle of the antenna needs to be adjusted, the telescopic rod 20 can be driven to extend and retract, thereby driving the driving gear rod 21 to drive the adjusting gear 9 to rotate; when only the antenna height needs to be adjusted, the driving gear rod 21 is rotated to separate the driving gear rod 21 from the transmission wheel group 4, and the height of the mounting seat 2 is adjusted by the lifting frame 14.

[0031] Example 2

[0032] See also Figure 1 to Figure 2 The difference between this embodiment and embodiment 1 is that the lifting frame 14 includes a scissor-type lifting frame 15 and a plurality of telescopic rods 16, the two ends of the scissor-type lifting frame 15 are respectively hinged to the adjustment seat 13 and the mounting seat 2, the two ends of the plurality of telescopic rods 16 are respectively connected to the adjustment seat 13 and the mounting seat 2, the plurality of telescopic rods 16 are located on the outside of the scissor-type lifting frame 15, the scissor-type lifting frame 15 is threadedly connected to a screw rod 17, a handle 18 is provided at the end of the screw rod 17, the handle 18 is rotated, the handle 18 drives the screw rod 17 to rotate, and the screw rod 17 drives the scissor-type lifting frame 15 to rise and fall.

[0033] See also Figure 1 The mounting seat 2 is provided with a through slot 24 to facilitate the installation of the antenna. A first support seat 25 connected to the mounting seat 2 is provided below the through slot 24. A second support seat 26 is provided on the adjustment seat 13. Both ends of the scissor-type lifting frame 15 are respectively connected to the first support seat 25 and the second support seat 26, which facilitates the installation of the lifting frame 14.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A near-field electric field antenna adjustable device, characterized in that: The utility model comprises a base, a mounting seat and an adjusting mechanism, wherein a plurality of pulleys with a braking function are arranged at the bottom of the base, an adjusting seat is rotatably connected to the upper part of the base, the adjusting seat is connected to the mounting seat for mounting an antenna through a lifting frame, an adjusting driving rod is rotatably connected to the mounting seat, the adjusting mechanism is installed on the base, the adjusting driving rod is engaged with or separated from the adjusting mechanism, the adjusting mechanism is transmission-connected with the adjusting seat, and the adjusting seat is driven to rotate by lifting and lowering the mounting seat, a plurality of balancing adjusting parts are connected to the base, the adjusting mechanism comprises a transmission wheel group, a driving shaft, an adjusting gear and a bracket fixed on the base, the adjusting driving rod is engaged with the transmission wheel group, and the transmission wheel group is connected with the adjusting mechanism through a belt. The driving shaft is connected in transmission, the adjusting gear is sleeved on the driving shaft, the adjusting gear is meshed with the adjusting seat to drive the adjusting seat to rotate in the horizontal direction, the transmission wheel group and the driving shaft are respectively rotatably connected to the bracket, the transmission wheel group includes a transmission gear and a pulley a, the transmission gear and the pulley a are coaxially arranged, the adjustable driving rod is meshed with the transmission gear, the driving shaft is provided with a pulley b, the pulley a is connected to the pulley b through a belt transmission, the adjustable driving rod includes a driving telescopic rod and a driving gear rod, the fixed end of the driving telescopic rod is hinged to the mounting seat, the telescopic end of the driving telescopic rod is connected to the driving gear rod, and the driving gear rod is meshed with the driving wheel group.

2. The adjustable near-field electric field antenna device according to claim 1, characterized in that: The driving telescopic rod is an electric telescopic rod or a hydraulic telescopic rod.

3. The adjustable near-field electric field antenna device according to claim 1, characterized in that: The adjusting seat is provided with a conical gear block along the circumferential direction, and the adjusting gear is meshed with the conical gear block.

4. The adjustable near-field electric field antenna device according to claim 1, characterized in that: The lifting frame includes a scissor-type lifting frame and a plurality of telescopic rods, the two ends of the scissor-type lifting frame are respectively hinged to the adjustment seat and the mounting seat, the two ends of the plurality of telescopic rods are respectively connected to the adjustment seat and the mounting seat, and the plurality of telescopic rods are located outside the scissor-type lifting frame.

5. The adjustable near-field electric field antenna device according to claim 4, characterized in that: The scissor-type lifting frame is threadedly connected to a screw rod, and a handle is provided at the end of the screw rod.

6. The adjustable near-field electric field antenna device according to claim 4, characterized in that: The mounting seat is provided with a through slot, a first support seat connected to the mounting seat is provided below the through slot, a second support seat is provided on the adjustment seat, and both ends of the scissor-type lifting frame are respectively connected to the first support seat and the second support seat.

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