CN114280403A - Electromagnetic interference testing device - Google Patents
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- CN114280403A CN114280403A CN202111600927.5A CN202111600927A CN114280403A CN 114280403 A CN114280403 A CN 114280403A CN 202111600927 A CN202111600927 A CN 202111600927A CN 114280403 A CN114280403 A CN 114280403A
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Abstract
The embodiment of the invention discloses an electromagnetic interference testing device which comprises an equipment body, wherein gears are arranged on two sides of the equipment body through rotating parts, a first threaded pipe is arranged on one side of each gear, a first threaded column is arranged in each first threaded pipe, and meshing assemblies matched with the gears are arranged on two sides of the equipment body; the meshing assembly comprises protective shells symmetrically arranged on two sides of the equipment body, each protective shell is of a cavity structure with an opening at one side and an opening at the bottom end, a toothed plate is arranged in each protective shell and meshed with the corresponding gear, a second threaded pipe is arranged at the top of each toothed plate, a second threaded column is connected to the inner part of each second threaded pipe in a threaded manner, and the top end of each second threaded column penetrates through each protective shell and is provided with a fixed disc; so for the equipment body can incline and place, the staff of being convenient for observes the operation face of equipment body, can also guarantee simultaneously that the antenna is vertical to the height of self-adaptation regulation antenna improves the measuring accuracy.
Description
Technical Field
The invention relates to the technical field of electromagnetic interference, in particular to an electromagnetic interference testing device.
Background
The electromagnetic interference test system is an electronic measuring instrument used in the fields of mathematics, information and system science related engineering and technology, electronic and communication technology, aviation and aerospace science technology, and the electromagnetic interference measuring instrument is an instrument for measuring various electromagnetic interference voltages, currents or field intensities. It is a receiver specifically designed according to the requirements of the specification.
Chinese invention patent CN201811277546.6 discloses an antenna for electromagnetic interference detection and a portable electronic device including the same, the electronic device may include a display, a Printed Circuit Board (PCB), a communication module including a communication circuit and disposed to the PCB, an electromagnetic interference (EMI) detection module including an electromagnetic interference detection circuit and disposed to the PCB, at least one antenna electrically coupled to the communication module and the EMI detection module, and a processor, wherein the processor is configured to output an image using the display, control a communication configuration of the electronic device with an external electronic device using the communication module, detect an EMI signal using the antenna and the EMI detection module, and perform a specified operation based on at least the detected EMI signal.
The electromagnetic interference test equipment is generally directly placed on a table, and workers need to be in head-up with an operation surface on the electromagnetic interference test equipment.
Meanwhile, the existing electromagnetic interference detector needs to use a detection antenna to detect different heights in a space to be detected, but the antenna cannot be vertical to the ground when in use, the stretching of the antenna is too troublesome, and the stretching length cannot be accurately controlled, so that the detection precision is reduced.
Disclosure of Invention
In view of the above situation, in order to overcome the defects in the prior art, the present invention provides an electromagnetic interference testing apparatus, which is convenient for a worker to observe the operation surface of an apparatus body, and adaptively adjusts the height of an antenna, thereby improving the testing precision.
In order to achieve the purpose, the invention provides the following technical scheme: an electromagnetic interference testing device comprises an equipment body, wherein gears are arranged on two sides of the equipment body through rotating parts, a first threaded pipe is arranged on one side of each gear, a first threaded column is arranged in each first threaded pipe, and meshing assemblies matched with the gears are arranged on two sides of the equipment body;
the meshing assembly comprises protective shells symmetrically arranged on two sides of the equipment body, a toothed plate is arranged in each protective shell and meshed with the gear, a second threaded pipe is arranged at the top of each toothed plate, a second threaded column is connected to the inner threads of each second threaded pipe in a threaded manner, and the top end of each second threaded column penetrates through each protective shell and is provided with a fixed disc;
the protection shell is characterized in that a reset spring is arranged at the top of the inner side of the protection shell, the bottom of the reset spring is fixedly connected with the top of a second threaded pipe, a sliding groove is formed in one side of the second threaded pipe, a connecting spring is arranged on the inner side of the sliding groove, a wedge-shaped fixture block is arranged at the other end of the connecting spring, a limiting hole is formed in one side of the protection shell, the wedge-shaped fixture block is in wedge-shaped clamping connection with the limiting hole, a bearing platform is arranged at the bottom of the limiting hole of the protection shell, and a lead weight is arranged at the top of the bearing platform;
the device comprises a bearing table, a device body, a bearing table, a plurality of stages of telescopic antennas, a plurality of limiting blocks, a transmission toothed ring, a second threaded column and a lifting rope, wherein the two sides of the device body, which are close to the bearing table, are rotatably connected with the two sides of the bearing table, the inner surface and the outer surface of each stage of the multistage telescopic antennas are respectively provided with a threaded structure, the top and the bottom of the inner surface and the outer surface of each stage of the multistage telescopic antennas are respectively provided with a limiting block, the outer surface of the multistage telescopic antennas is provided with the transmission toothed ring, the tooth height of the second threaded column is larger than that of the transmission toothed ring, the transmission toothed ring can penetrate through the protective shell and is in threaded connection with the second threaded column, the bottom of the multistage telescopic antennas is provided with the lifting rope, and the lifting rope is fixedly connected with a lead weight;
work as the pinion rack is spacing with gear engagement back, the tensile reset spring of second screwed pipe moves down, the wedge fixture block passes spacing hole and carries on spacingly, the second screwed pipe break away from with the threaded connection of second screw post, the plummet breaks away from the plummer and drives multistage flexible antenna vertical placing with the help of gravity, the transmission ring gear pass the protecting crust and with second screw post thread engagement, second screw post rotates and drives multistage flexible antenna height and constantly risees.
Compared with the prior art, the invention has the beneficial effects that:
1. in the work, the bottom of the equipment body is supported through the arranged base, the inclined angle of the first threaded pipe is changed through the rotation of the driving gear through the arranged gear, the first threaded pipe, the first threaded column, the rotary table, the elastic supporting block and the rotating piece, the rotary table is driven to rotate, the distance between the first threaded pipe and the rotary table is changed, the equipment body can be placed in an inclined mode, and workers can observe the operation surface of the equipment body conveniently;
2. through the sliding chute and the sliding block that set up for steady reciprocating of second screwed pipe and pinion rack, through protecting crust and the inner structure that sets up, the drive carousel rotates, makes the second screw thread post rotate, changes the length that the second screw thread post is located the second screwed pipe, and then adjusts the height of second screwed pipe, thereby adjusts the height of pinion rack, after the gear rotation, can limit gear's position.
3. By arranging the wedge-shaped fixture block and the limiting hole, when the toothed plate is meshed and fixed with the gear, the second threaded rod continues to rotate, the second threaded pipe continues to descend, the wedge-shaped fixture block is in wedge-shaped clamping fit with the limiting hole, the second threaded pipe is separated from the second threaded column, and by arranging the lead weight and the bearing platform, the wedge-shaped fixture block passes through the limiting hole and then touches the lead weight, so that the lead weight is separated from the bearing platform; the device has solved the fixed problem behind pinion rack and gear engagement well for the second screwed pipe breaks away from the cooperation with second screw thread post, improves the multiple use nature of second screw thread post, and the simple operation is effective.
4. By arranging the lead weight and the multistage telescopic antenna, the multistage telescopic antenna is driven to be vertically placed by the aid of self gravity after the lead weight is separated from the bearing platform, so that the multistage telescopic antenna is accurately and efficiently tested; by arranging the transmission gear ring and the second threaded column, when the transmission gear ring penetrates through the protective shell to be in threaded engagement with the second threaded column, the second threaded column rotates to drive the transmission gear ring to rotate, and the transmission gear ring rotates to drive the multi-stage telescopic antenna to rotate, so that the multi-stage telescopic antenna is continuously extended, and the multipoint property of the test is ensured; the device can self-adaptively adjust the height of the multistage telescopic antenna, and keeps the multistage telescopic antenna in a vertical state, improves the diversity of the test height, improves the test precision, guarantees the test result, and simultaneously the second threaded column not only can adjust the height of the multistage telescopic antenna after the gear is limited by means of the thread transmission second threaded pipe in actual use, thereby improving the versatility of the second threaded column and improving the test efficiency.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a second schematic view of the overall structure of the present invention;
FIG. 3 is a schematic view of the internal structure of the protective shell according to the present invention;
FIG. 4 is a schematic view of a rotating member according to the present invention;
FIG. 5 is a front cross-sectional view of the protective case of the present invention;
fig. 6 is a front cross-sectional view of the multi-stage retractable antenna of the present invention.
In the figure: 1. an apparatus body; 2. a base; 3. a gear; 4. a first threaded pipe; 5. a first threaded post; 6. a turntable; 7. a protective shell; 8. a toothed plate; 9. a second threaded pipe; 10. a second threaded post; 11. a bearing; 12. fixing the disc; 13. a handle; 14. a limiting hole; 15. a wedge-shaped fixture block; 16. a limiting chamber; 17. a through hole; 18. a limiting disc; 19. a fixed shaft; 20. an elastic support block; 21. a bearing table; 22. a return spring; 23. a chute; 24. a connecting spring; 25. a multi-stage telescopic antenna; 26. a lifting rope; 27. a lead weight; 28. a transmission gear ring; 29. a limiting block; 30. a yielding groove.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
First embodiment
As shown in fig. 1-4, the device comprises a device body 1, a plurality of bases 2 are arranged at the bottom of the device body 1, gears 3 are arranged on two sides of the device body 1, the gears 3 are connected with the device body 1 through rotating parts, a first threaded pipe 4 is arranged on one side of each gear 3, a first threaded column 5 is arranged in each first threaded pipe 4, a rotary table 6 is arranged at one end of each first threaded column 5, an elastic supporting block 20 is arranged on each rotary table 6, meshing components matched with the gears 3 are arranged on two sides of the device body 1, and the rotary tables 6 can be driven to move by the rotation of the first threaded columns 5 in the first threaded pipes 4, so that the device is supported by the elastic supporting blocks 20 in contact with the ground.
The meshing assembly comprises protective shells 7 symmetrically arranged on two sides of the equipment body 1, each protective shell 7 is of a cavity structure with one side and a bottom end open, one side of each protective shell 7 is fixedly connected with the equipment body 1, a toothed plate 8 is arranged in each protective shell 7, the toothed plates 8 are meshed with the gears 3, and a second threaded pipe 9 is arranged at the top of each toothed plate 8.
Through drive gear 3 rotation, change the inclination of first screwed pipe 4, drive carousel 6 rotates, changes the distance between first screwed pipe 4 and the carousel 6, and then makes equipment body 1 can incline to place, the staff of being convenient for observe the operating surface of equipment body 1.
The inside threaded connection of second screwed pipe 9 has second screwed column 10, the top inner wall of protecting crust 7 is run through on the top of second screwed column 10, the department of running through of second screwed column 10 and protecting crust 7 is equipped with bearing 11, the top of second screwed column 10 runs through protecting crust 7 and is equipped with fixed disk 12, the top of second screwed column 10 and the fixed disk 12 fixed connection who is located the protecting crust 7 top, the top of fixed disk 12 is equipped with two handles 13, rotate through handle 13 drive fixed disk 12, make second screwed column 10 rotate, change the length that second screwed column 10 is located second screwed pipe 9, and then adjust the height of second screwed pipe 9, thereby adjust the height of pinion rack 8, after gear 3 finishes rotating, can limit gear 3's position.
The cross section of base 2 and elastic support block 20 is semi-circular structure, and the surface of second screwed pipe 9 is equipped with the sliding block, and the internal surface of protecting sheathing 7 is equipped with the sliding tray, sliding block and sliding tray sliding connection through the sliding block and the sliding tray that set up for second screwed pipe 9 and the steady reciprocating of pinion rack 8.
As shown in fig. 4, the rotating member includes a limiting cavity 16 provided in the gear 3, a through hole 17 is provided in an inner wall of one side of the limiting cavity 16, a limiting disc 18 is provided in the limiting cavity 16, a fixing shaft 19 is provided on one side of the limiting disc 18, the fixing shaft 19 penetrates through the through hole 17, one end of the fixing shaft 19 is fixedly connected with the device body 1, and the gear 3 is rotatably connected with the device body 1 through the rotating member.
During the use, support the bottom of equipment body 1 through base 2, drive fixed disk 12 through rotating handle 13 and rotate, make second screw thread post 10 rotate, change the length that second screw thread post 10 is located second screwed pipe 9, and then adjust the height of second screwed pipe 9, thereby adjust the height of pinion rack 8, after gear 3 rotates, can limit gear 3's position, rotate through drive gear 3, change the inclination of first screwed pipe 4, drive carousel 6 rotates, change the distance between first screwed pipe 4 and the carousel 6, and then make equipment body 1 can incline and place, the operating surface of the staff of being convenient for observation equipment body 1, through the cooperation of sliding tray and sliding tray, make the smooth reciprocating of second screwed pipe 9 and pinion rack 8.
Second embodiment
Based on the electromagnetic interference testing device provided by the first embodiment, in actual use, data acquisition is carried out in a space to be tested by using an antenna, when one end of the equipment body 1 is lifted, the antenna can not be placed vertically accurately, so that the detection precision of the antenna can be influenced, meanwhile, the antenna for detection usually needs to be pulled out and extended manually, so that the operation of the antenna is complicated, and the detection height can not be controlled accurately, in order to solve the problem, the accurate and quick adjustment of the device on the antenna is realized, in combination with the graph of fig. 5 and 6, the electromagnetic interference testing device further comprises a reset spring 22 arranged at the top of the inner side of the protective shell 7, the bottom of the reset spring 22 is fixedly connected with the top of the second threaded pipe 9, so that the reset spring 22 can be pulled to extend in the downward sliding process of the second threaded pipe 9, a chute 23 is arranged at one side of the second threaded pipe 9, the inboard of spout 23 is equipped with coupling spring 24, coupling spring 24's the other end is equipped with wedge fixture block 15, spacing hole 14 has been seted up to one side of protecting crust 7, wedge fixture block 15 and spacing hole 14 wedge joint, after second screwed pipe 9 descends to a take the altitude, wedge fixture block 15 can make second screwed pipe 9 and second threaded post 10 break away from through the wedge cooperation with spacing hole 14, second screwed pipe 9 bottom and gear 3 meshing card are dead this moment, second screwed pipe 9 one side is fixed spacing with the help of wedge fixture block 15 and spacing hole 14 wedge cooperation, second threaded post 10 has just so released effectively, make it carry out subsequent work.
The protective shell 7 is provided with a bearing platform 21 at the bottom of the limiting hole 14, the top of the bearing platform 21 is provided with a lead weight 27, the wedge-shaped fixture block 15 can touch the lead weight 27 on the bearing platform 21 after passing through the limiting hole 14, so that the lead weight 27 can be separated from the bearing platform 21 and fall down, when the lead weight 27 is manually placed on the bearing platform 21, the lead weight 27 can extrude the wedge-shaped fixture block 15, the wedge-shaped fixture block 15 extrudes the connecting spring 24 to move reversely, so that the wedge-shaped fixture block 15 is separated from the wedge-shaped limiting function of the limiting hole 14, at the moment, the second threaded pipe 9 and the second threaded column 10 are in thread fit again under the elastic action of the reset spring 22, the reset spring 22 not only effectively plays a good limiting effect on the movement of the second threaded pipe 9, but also can enable the second threaded pipe 9 to be in thread fit with the second threaded column 10 again by virtue of the elasticity of the second threaded pipe 9, and the match with the wedge-shaped fixture block 15 to realize different position relations of the second threaded pipe 9, thereby realize the effect that second threaded column 10 is different under different circumstances, finally, reset spring 22 also possesses fine shock attenuation buffering effect, can improve the buffer nature durability of second screwed pipe 9 when in-service use, improves life.
The elastic coefficient of connecting spring 24 is greater than the elastic coefficient of reset spring 22, and when wedge fixture block 15 and spacing hole 14 wedge-shaped cooperation, second screwed pipe 9 breaks away from screw-thread fit with second threaded post 10, consequently when wedge fixture block 15 reachd spacing hole 14 position, connecting spring 24 can preferentially drive wedge fixture block 15 and spacing hole 14 wedge-shaped cooperation to drive second screwed pipe 9 extension reset spring 22 and break away from with second threaded post 10.
Equipment body 1 all rotates near the both sides of plummer 21 and is connected with multistage telescopic antenna 25, multistage telescopic antenna 25 passes through electric wire and 1 inside electric connection of equipment body, multistage telescopic antenna 25 extends the different detectable not co-altitude of length and measures the interference value, through the extension length that changes multistage telescopic antenna 25, thereby detect the co-altitude in the space that awaits measuring, collect multiunit data, improve the detection precision, every level inside and outside surface in the multistage telescopic antenna 25 all is equipped with helicitic texture, the top and the bottom of every level inside and outside surface of multistage telescopic antenna 25 all are equipped with stopper 29, can carry on spacingly to multistage telescopic antenna 25's shrink effectively through stopper 29, make it rotate along with last one-level with the help of stopper 29 when the one-level extends the maximum value, thereby realize the flexible of multistage layering.
The outer surface of the multi-stage telescopic antenna 25 is provided with a transmission gear ring 28, the gear height of the second threaded column 10 is larger than that of the transmission gear ring 28, one side of the protective shell 7, which is close to the multi-stage telescopic antenna 25, is provided with a through hole, the size of the through hole is larger than that of the transmission gear ring 28, so that when the protective shell 7 inclines, the transmission gear ring 28 of the multi-stage telescopic antenna 25 can still be in meshing transmission with the second threaded column 10, the transmission gear ring 28 can pass through the protective shell 7 and is in threaded connection with the second threaded column 10, after the second threaded pipe 9 is separated from the second threaded column 10, the second threaded column 10 can be in meshing transmission with the transmission gear ring 28, the second threaded column 10 can drive the transmission gear ring 28 to rotate continuously, the transmission gear ring 28 rotates to drive the outermost layer of the multi-stage telescopic antenna 25 to rotate, the outermost layer of the multi-stage telescopic antenna 25 drives the inner second layer to move upwards through the principle of a screw nut, when moving to the maximum value on the second level, can make outermost drive the synchronous rotation of second level with the help of stopper 29, realize the constantly changing of its multistage flexible antenna 25 height in proper order, the bottom of multistage flexible antenna 25 is equipped with lifting rope 26, lifting rope 26 and plummet 27 fixed connection, then when plummet 27 breaks away from with plummer 21, because plummet 27 is in vertical state constantly, consequently plummet 27 can drive the multistage flexible antenna 25 at top and be in vertical state in step, the transmission ring gear 28 of multistage flexible antenna 25 surface stretches into in protecting crust 7 and meshes the transmission with second threaded rod 10 this moment.
In particular, since the tooth height of the second threaded column 10 is greater than the tooth height of the transmission gear ring 28, when the transmission gear ring 28 is in a vertical state and the second threaded column 10 is in an inclined state, the transmission gear ring 28 can still be driven to rotate by partial thread teeth when the second threaded column 10 rotates, so that the telescopic operation of the multi-stage telescopic antenna 25 is realized.
One side that first screwed pipe 4 is close to multistage telescopic antenna 25 is equipped with the groove of stepping down 30, step down groove 30 and transmission ring gear 28 joint, consequently when the device is not used, first screwed pipe 4 and multistage telescopic antenna 25 are drawn together the contact and are placed, step down groove 30 and transmission ring gear 28 joint this moment, and 3 ends of gear of first screwed pipe 4 are spacing fixed by second screwed pipe 9, like this with regard to preferential first screwed pipe 4 of having avoided appearing in the device handling or multistage telescopic antenna 25 rocks, improve the security performance of device.
During the use, thereby rotate the angle of gear 3 and adjust first screwed pipe 4 according to first embodiment, later rotate first screw post 5 and adjust the length of elastic support block 20 for elastic support block 20 and ground contact, the slope of equipment body 1 is placed this moment, and the operating personnel of being convenient for like this reads equipment body 1 test data, and it is convenient to use, easy operation.
After the gear 3 and the first threaded column 5 are adjusted, the equipment body 1 has a certain inclination angle with the ground, the rotating handle 13 drives the fixed disk 12 to rotate, the fixed disk 12 rotates to drive the second threaded column 10 to rotate, the second threaded column 10 rotates to drive the threaded pipe 9 to move up and down in the protective shell 7, meanwhile, the sliding fit relationship between the sliding block and the sliding groove can effectively limit the movement of the second threaded pipe 9, when the second threaded pipe 9 descends to a certain distance, the toothed plate 8 is meshed with the gear 3, at the moment, the fixed disc 12 is further rotated, the fixed disc drives the second threaded column 10 to rotate, the second threaded column 10 rotates to drive the second threaded pipe 9 to continuously descend, the wedge-shaped fixture block 15 is in wedge-shaped fit with the limiting hole 14, and the wedge-shaped fixture block 15 drives the second threaded pipe 9 to stretch the return spring 22 and move downwards, so that the second threaded pipe 9 is separated from the second threaded column 10.
The toothed plate 8 at the bottom of the second threaded pipe 9 is meshed with the gear 3, the gear 3 can be limited and fixed by means of the toothed plate 8, and is prevented from rotating again, when the wedge-shaped fixture block 15 is in wedge fit with the limiting hole 14, the wedge-shaped fixture block 15 extends out of the limiting hole 14 and collides with the plummet 27, so that the plummet 27 is separated from the bearing table 21 and falls off, when the plummet 27 falls off, because the plummet 27 is in a vertical state at all times, the plummet 27 straightens the lifting rope 26 by means of gravity, the multistage telescopic antenna 25 at the top of the lifting rope 26 vertically swings under the gravity action of the plummet 27, the transmission toothed ring 28 on the outer surface of the multistage telescopic antenna 25 penetrates through the protective shell 7 to be in threaded fit with the second threaded column 10, at the moment, because the tooth height of the second threaded column 10 is greater than that of the transmission toothed ring 28, an included angle between the second threaded column 10 and the ground is raised along with the inclination of the equipment body 1, even if the second threaded column 10 is obliquely arranged, the second threaded column can still be in threaded engagement with the transmission gear ring 28 for transmission, and at the moment, the multistage telescopic antenna 25 is vertically arranged on the ground, so that the test precision can be effectively improved, and the quality and the accuracy of test data can be ensured.
When the height of the multistage telescopic antenna 25 needs to be adjusted, the handle 13 is manually rotated, the handle 13 drives the fixed disk 12 to rotate, the fixed disk 12 drives the second threaded column 10 to rotate, at the moment, the second threaded column 10 is disengaged from the second threaded pipe 9, the second threaded column 10 is meshed with the transmission toothed ring 28 for transmission, the second threaded column 10 rotates to drive the transmission toothed ring 28 to rotate, the transmission toothed ring 28 drives the outermost layer of the multistage telescopic antenna 25 to rotate, the outermost layer of the multistage telescopic antenna 25 drives the antenna of the second layer to move upwards through the threaded screw rod structure when rotating, when the antenna of the second layer rises to the maximum value, the outermost layer of the multistage telescopic antenna 25 is in contact with the limiting block 29 of the antenna of the second layer for limiting, so that the antenna of the second layer cannot continue to rise, and the antenna of the second layer can perform subsequent transmission along with the synchronous rotation of the outermost layer of the multistage telescopic antenna 25, finally, the multi-stage telescopic antenna 25 is extended layer by layer, so that the optimal extension length is achieved, and the actual test requirement is met.
Specifically, the extension length of the multistage telescopic antenna 25 can be correspondingly changed only by controlling the number of rotation turns of the handle 13 by an operator, so that the electromagnetic interference strength of different heights in the space to be detected can be acquired according to the number of rotation turns of the handle 13 with different detection heights, the detection data diversity of the electromagnetic interference is improved, multipoint data acquisition is facilitated, and the detection precision is improved.
After the detection is accomplished, only need the antiport handle 13, handle 13 drives fixed disk 12 antiport, fixed disk 12 drives second screw thread post 10 antiport, second screw thread post 10 drives transmission ring gear 28 antiport, transmission ring gear 28 drives multistage telescopic antenna 25 antiport, thereby retrieve multistage telescopic antenna 25 extension, and stopper 29 at recovery in-process bottom carries out limiting displacement to the rotation of the antenna of each layer, thereby make multistage telescopic antenna 25 can release to the original state effectively.
After the multistage telescopic antenna 25 is recovered, the plummet 27 is placed at the top of the bearing table 21 again, the bottom of the multistage telescopic antenna 25 loses the traction effect of the plummet 27, the state of the multistage telescopic antenna is restored to be parallel to the equipment body 1 by virtue of self gravity, the transmission gear ring 28 is separated from the engagement with the second threaded column 10, the plummet 27 drives the wedge-shaped fixture block 15 to extrude the connecting spring 24 to move reversely, the wedge-shaped fixture block 15 is separated from the wedge-shaped clamping limit of the limiting hole 14, the second threaded tube 9 is contacted with the second threaded column 10 again under the elastic action of the reset spring 22 to be meshed with threads, the reverse rotation handle 13 is continuously rotated at the moment, the handle 13 drives the fixed disk 12 to rotate reversely, the fixed disk 12 drives the second threaded column 10 to rotate reversely, and the second threaded column 10 drives the second threaded tube 9 to move upwards and separate from the engagement with the gear 3.
After gear 3 breaks away from to be connected with the meshing of pinion rack 8, rotate first screw thread post 5 and retrieve first screwed pipe 4 to the minimum, and rotate gear 3, make first screwed pipe 4 resume with equipment body 1 horizontality, equipment body 1 loses bottom sprag this moment and then resumes to place the contact state with ground level again, with the groove of stepping down 30 and the transmission ring gear 28 joint of first screwed pipe 4 side, and forward rotation handle 13, make the pinion rack 8 of second screwed pipe 9 bottom resume again with the meshing of gear 3, stop rotating handle 13, then multistage flexible antenna 25 and first screwed pipe 4 stably laminate in equipment body 1 both sides, whole device accomplishes the recovery work. The device can self-adaptively adjust the height of the multistage telescopic antenna 25, and keep the multistage telescopic antenna 25 in a vertical state, the diversity of the test height is improved, the test precision is improved, the test result is ensured, meanwhile, the second threaded column 10 can not only adjust the height of the multistage telescopic antenna 25 after the gear 3 is limited by means of the thread transmission second threaded pipe 9 in actual use, the versatility of the second threaded column 10 is improved, and the test efficiency is improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a release effectively such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. An electromagnetic interference testing apparatus, comprising: the device comprises a device body (1), wherein gears (3) are arranged on two sides of the device body (1) through rotating parts, a first threaded pipe (4) is arranged on one side of each gear (3), a first threaded column (5) is arranged in each first threaded pipe (4), and meshing assemblies matched with the gears (3) are arranged on two sides of the device body (1);
the meshing assembly comprises protective shells (7) symmetrically arranged on two sides of the equipment body (1), a toothed plate (8) is arranged in each protective shell (7), the toothed plate (8) is meshed with the gear (3), a second threaded pipe (9) is arranged at the top of each toothed plate (8), a second threaded column (10) is connected to the inner part of each second threaded pipe (9) in a threaded manner, and the top end of each second threaded column (10) penetrates through each protective shell (7) and is provided with a fixed disc (12);
the top of the inner side of the protective shell (7) is provided with a reset spring (22), the bottom of the reset spring (22) is fixedly connected with the top of a second threaded pipe (9), one side of the second threaded pipe (9) is provided with a sliding groove (23), the inner side of the sliding groove (23) is provided with a connecting spring (24), the other end of the connecting spring (24) is provided with a wedge-shaped clamping block (15), one side of the protective shell (7) is provided with a limiting hole (14), the wedge-shaped clamping block (15) is in wedge-shaped clamping connection with the limiting hole (14), the bottom of the protective shell (7) positioned in the limiting hole (14) is provided with a bearing platform (21), and the top of the bearing platform (21) is provided with a lead weight (27);
the device comprises a bearing table (21), and is characterized in that two sides of the device body (1) close to the bearing table (21) are rotatably connected with multistage telescopic antennas (25), each stage of inner and outer surfaces in the multistage telescopic antennas (25) are provided with threaded structures, the top and the bottom of each stage of inner and outer surfaces of the multistage telescopic antennas (25) are provided with limiting blocks (29), the outer surface of the multistage telescopic antennas (25) is provided with a transmission toothed ring (28), the tooth height of a second threaded column (10) is greater than that of the transmission toothed ring (28), the transmission toothed ring (28) can penetrate through a protective shell (7) and is in threaded connection with the second threaded column (10), the bottom of the multistage telescopic antennas (25) is provided with a lifting rope (26), and the lifting rope (26) is fixedly connected with a lead weight (27);
work as pinion rack (8) and gear (3) meshing spacing back, second screwed pipe (9) extension reset spring (22) downstream, wedge fixture block (15) pass spacing hole (14) and carry on spacingly, second screwed pipe (9) break away from with the threaded connection of second screw thread post (10), plummet (27) break away from plummer (21) and drive multistage flexible antenna (25) vertical placing with the help of gravity, transmission ring gear (28) pass protecting crust (7) and with second screw thread post (10) threaded engagement, second screw thread post (10) rotate and drive multistage flexible antenna (25) highly and constantly rise.
2. The EMI testing device as claimed in claim 1, wherein said protective shell (7) is a cavity structure with one side and bottom end open, a bearing (11) is disposed at the penetration of said second screw column (10) and said protective shell (7), and two handles (13) are disposed on the top of said fixed disk (12).
3. The EMI testing device as set forth in claim 1, wherein the spring constant of the connection spring (24) is greater than the spring constant of the return spring (22), and when the wedge (15) is in wedge engagement with the retention hole (14), the second threaded tube (9) is out of threaded engagement with the second threaded stud (10).
4. The EMI testing device as claimed in claim 1, wherein a turntable (6) is provided at one end of the first threaded post (5), an elastic support block (20) is provided on the turntable (6), and the cross section of the elastic support block (20) is a semicircular structure.
5. The electromagnetic interference testing device according to claim 1, characterized in that a yielding groove (30) is arranged on one side of the first threaded pipe (4) close to the multi-stage telescopic antenna (25), and the yielding groove (30) is connected with the transmission gear ring (28) in a clamping manner.
6. The electromagnetic interference testing device according to claim 1, characterized in that a plurality of bases (2) are arranged at the bottom of the device body (1), and the cross sections of the bases (2) are semicircular structures.
7. The EMI testing device as claimed in claim 1, wherein the rotating member includes a limiting chamber (16) disposed in the gear (3), a through hole (17) is formed in an inner wall of one side of the limiting chamber (16), a limiting disc (18) is disposed in the limiting chamber (16), a fixing shaft (19) is disposed on one side of the limiting disc (18), the fixing shaft (19) penetrates through the through hole (17), and one end of the fixing shaft (19) is fixedly connected to the device body (1).
8. The EMI testing device as claimed in claim 1, wherein the second threaded pipe (9) is provided with a sliding block on its outer surface, and the protective shell (7) is provided with a sliding groove therein, the sliding block being slidably connected to the sliding groove.
9. The EMI testing device as claimed in claim 1, wherein said multi-stage telescopic antenna (25) is electrically connected to the inside of the device body (1) by means of wires, and the extension lengths of said multi-stage telescopic antenna (25) are different for detecting the electrical interference values at different heights.
10. The EMI testing device as claimed in claim 1, characterised in that said shielding shell (7) has a passage hole formed in its side adjacent to the multi-stage telescopic antenna (25), said passage hole having a size greater than that of the transmission gear ring (28).
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| CN202111600927.5A CN114280403B (en) | 2021-12-24 | 2021-12-24 | Electromagnetic interference testing device |
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| CN114280403B (en) | 2024-06-25 |
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