An EMC automatic steering test device

Abstract

The application discloses an EMC automatic steering test device and belongs to the technical field of vehicle testing, which comprises a shielding cover, a DD motor is fixedly installed on the inner surface of the shielding cover, a supporting assembly is arranged at the bottom of the shielding cover, the supporting assembly comprises a telescopic column which is hinged to the bottom of the shielding cover, a supporting sleeve is slidably connected to the outer surface of the telescopic column, supporting seats are fixedly connected to the left and right sides of the telescopic column, a worm is rotatably connected to the right side of each supporting seat, a hand wheel is fixedly connected to the right end of the worm, a worm gear structure is engaged with the top of the worm, and the worm gear structure is fixedly connected to the bottom of the shielding cover. The clamping assembly can clamp the steering wheel of the automobile, and simultaneously drive the pressing assembly to move, so that the pressing assembly applies force to the front of the steering wheel of the automobile, thereby increasing the friction force and preventing the clamping assembly from slipping, and the clamping assembly has the effect of conveniently and stably clamping the steering wheel of the automobile.

Description

Technical Field

[0001] This application relates to the field of vehicle testing technology, and more specifically, to an EMC automatic steering testing device. Background Technology

[0002] EMC automatic steering testing is a specialized dynamic testing project in the field of automotive electromagnetic compatibility, primarily used to verify the functional reliability of a vehicle's steering system under strong electromagnetic environments. Relying on a dedicated shielded automatic steering device, it automatically controls the vehicle's steering wheel to complete continuous steering movements under strong electromagnetic radiation conditions in an EMC anechoic chamber. Steering torque and angle data are collected synchronously throughout the process to determine whether the steering system malfunctions or fails. The entire testing equipment can operate stably in a strong field environment of 100V / m, eliminating test misjudgments caused by interference with the equipment itself. It is a mandatory test for EMC certification of intelligent driving vehicles and new energy vehicles, simulating the conditions of vehicles passing through strong electromagnetic fields such as high-voltage lines and radar stations, thus fundamentally preventing driving safety accidents caused by electromagnetic interference to the steering system.

[0003] Patent document CN115684743A discloses an EMC automatic steering test device and its test system, including a fixed suction cup and an electrical control cabinet. The bottom of the fixed suction cup is fixedly connected to a connecting seat, and a universal adjustment bracket is installed at the bottom of the connecting seat. A connecting shaft is fixedly connected to the end of the universal adjustment bracket away from the connecting seat, and a shielding cover is fixedly connected to the bottom end of the connecting shaft. A DD motor is installed inside the shielding cover. The input end of the electrical control cabinet is electrically connected to the DD motor through a shielded wire. A filter tube with an opening is fixedly connected to one end of the shielding cover, and an insulator connector is fixedly connected to the output end of the DD motor.

[0004] However, it is attached to the top of the vehicle body surface by a fixed suction cup, and the DD motor and its external shield are supported by a universal adjustment bracket. The universal adjustment bracket has a large load-bearing capacity, especially when the DD motor is running. The universal adjustment bracket needs to bear the weight and the torque of the DD motor rotation, which reduces its reliability and makes it easy to deform or even loosen, making it difficult to stably support the DD motor for operation.

[0005] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is the closest prior art. Summary of the Invention

[0006] To address the shortcomings of existing technologies, this invention provides an EMC automatic steering test device with good support performance, solving the problems mentioned in the background section.

[0007] To achieve the above objectives, this application provides an EMC automatic steering testing device, comprising: a shielding cover, on which a DD motor is fixedly mounted; a support assembly, disposed at the bottom of the shielding cover, the support assembly including a telescopic column hinged to the bottom of the shielding cover, a support sleeve slidably connected to the outer surface of the telescopic column, support seats fixedly connected to both sides of the telescopic column, a worm gear penetrating and rotatably connected to the right side of the support seat, a handwheel fixedly connected to the right end of the worm gear, a worm wheel structure meshing with the top of the worm gear, the worm wheel structure being fixedly connected to the bottom of the shielding cover; a base assembly, fixedly mounted at the lower end of the support sleeve; a rotating assembly, fixedly mounted on the left side of the DD motor; and a clamping assembly, fixedly mounted on the rotating assembly. The shielding cover has the following components: an outer surface; a pressing assembly fixedly installed on the inner surface of the rotating assembly; a heat dissipation assembly fixedly installed on the right side of the inner surface of the shielding cover; and an air inlet assembly fixedly installed at the bottom of the shielding cover. The shielding cover is a high-permeability metal shielding shell used to block strong external electromagnetic radiation from directly coupling to the internal circuit of the DD motor. The top of the shielding cover has a door panel and a locking mechanism. When the door panel is closed, it is seamless. The right end of the shielding cover has an open opening. The upper end of the telescopic column has a slot for accommodating the worm and worm wheel structure. The support base is L-shaped, and there are two support bases. A bearing is installed between the support base and the worm. The worm wheel structure is a semi-annular worm wheel. The worm is rotated by turning the handwheel, which in turn drives the worm wheel structure to adjust the angle of the shielding cover on the telescopic column.

[0008] Preferably, the base assembly includes a base plate, which is fixedly connected to the lower end of the support sleeve. A first electric push rod is fixedly connected to the top of the base plate, and the upper end of the first electric push rod is fixedly connected to the bottom of the support seat. A pad is provided at the bottom of the base plate, and a first screw is rotatably connected to the top of the pad. The first screw is threaded through the top of the base plate. A first limiting rod is fixedly connected to the top of the pad, and the first limiting rod is slidably connected through the top of the base plate. The first electric push rod is located at the bottom of the support seat on the left side. There are two pads and two first screws. Each pad is provided with two first limiting rods. The pads are embedded in the bottom of the base plate. The distance between the two pads and the base plate is adjusted by rotating the first screw to adjust the front and rear tilt angle of the base plate.

[0009] Preferably, the base assembly further includes a second screw, which is threaded through the top of the base plate. A suction cup is rotatably connected to the lower end of the second screw. There are four second screws and suction cups, which are located at the four corners of the bottom of the base plate. By rotating the second screw, the suction cups are lowered so that they can adhere to the bottom of the vehicle body surface, thereby fixing the base plate.

[0010] Preferably, the rotating assembly includes a rotating rod, which is fixedly connected to the output end of the DD motor via a coupling. The rotating rod passes through and is rotatably connected to the left side of the shield. A rotating cover is fixedly connected to the left end of the rotating rod. A bearing is provided between the rotating rod and the shield. The rotating cover has a bowl-shaped structure. The rotating rod is driven to rotate by the DD motor, thereby driving the rotating cover to rotate.

[0011] Preferably, the clamping assembly includes a support groove, which is fixedly connected to the outer surface of the rotating cover. A sliding seat is slidably connected to the inner surface of the support groove, and a fixed seat is fixedly connected to the outer surface of the sliding seat. A second electric push rod is fixedly connected to the inner surface of the sliding seat, and the second electric push rod is fixedly connected to the outer surface of the rotating cover. The clamping assembly consists of three sets, which are respectively arranged in a ring around the rotating cover. The outer surface of the sliding seat is provided with a sliding groove, and the inner surface of the support groove is provided with a protrusion corresponding to the sliding groove on the sliding seat. The fixed seat is hook-shaped. The sliding seat slides and retracts within the support groove by the retraction of the second electric push rod, thereby driving the fixed seat to fix the car steering wheel.

[0012] Preferably, the pressing assembly includes a first hydraulic chamber, which is fixedly connected to the outer surface of the fixed base. A first hydraulic rod is slidably connected to the inner surface of the first hydraulic chamber. A pressing plate is fixedly connected to the outer end of the first hydraulic rod. A second limiting rod is fixedly connected to the outer surface of the pressing plate. The second limiting rod passes through and is slidably connected to the fixed base. A second hydraulic chamber passes through and is fixedly connected to the right side of the rotating cover. A pipeline connects the second hydraulic chamber and the first hydraulic chamber. A second hydraulic rod is slidably connected to the inner surface of the second hydraulic chamber. A pressing plate is fixedly connected to the left end of the second hydraulic rod. A telescopic rod is fixedly connected to the right side of the pressing plate and is fixedly connected to the inner surface of the rotating cover. The pressing assembly has a number of... The assembly consists of three sets, with each set containing two pressing plates, two second limiting rods, and two telescopic rods on the pressing plate. The first and second hydraulic chambers are connected by a hose. Hydraulic oil is contained in both the first and second hydraulic chambers, as well as in the hose. The left side of the pressing plate has a rubber layer and a raised structure. When the car steering wheel is fixed by the fixing seat, the car steering wheel pushes the pressing plate, causing the first hydraulic rod to slide into the first hydraulic chamber. The first hydraulic rod pushes the hydraulic oil in the first hydraulic chamber, which is then injected into the second hydraulic chamber through the hose, causing the second hydraulic rod to extend from its interior. This pushes the pressing plate to press against the front of the car steering wheel to increase friction and prevent slippage when the car steering wheel is turned.

[0013] Preferably, the heat dissipation component includes a cooling fan, which is fixedly installed on the inner surface of the shielding cover. A first metal mesh plate is fixedly connected to the right side of the shielding cover. The cooling fan includes fan blades, a bracket, and a drive motor for dissipating heat from the DD motor inside the shielding cover. The first metal mesh plate is fully conductively connected to the right side opening of the shielding cover, thereby providing effective electromagnetic shielding for the right side opening of the shielding cover.

[0014] Preferably, the air intake assembly includes an air intake chamber, which is fixedly connected to the bottom of the shielding cover and communicates with the inner surface of the shielding cover. A collection chamber is fixedly connected to the bottom of the air intake chamber and communicates with the inner surface of the air intake chamber. A sealing cover is threaded to the lower end of the collection chamber. A second metal mesh plate is fixedly connected to the left side of the air intake chamber. A dustproof net is fixedly connected to the inner surface of the air intake chamber. A cleaning brush is slidably connected to the left side of the dustproof net. A connecting rod is fixedly connected to the top of the cleaning brush. The connecting rod penetrates and slidably connects to the top of the air intake chamber and the bottom of the shielding cover. A lifting frame is fixedly connected to the upper end of the connecting rod. A top wheel is slidably connected to the inner surface of the lifting frame. The top wheel is fixedly connected to the outer surface of the rotating rod. The lifting frame is fixedly connected to sliding sleeves on both its front and rear sides. A support rod is slidably connected to the inner surface of the sliding sleeve, and the support rod is fixedly connected to the inner surface of the shielding cover. The air inlet chamber facilitates air circulation inside the shielding cover for heat dissipation. The second metal mesh plate is electrically connected to the left opening end face of the air inlet chamber, which effectively provides electromagnetic shielding for the left opening of the air inlet chamber. The top wheel is eccentrically set on the outer surface of the rotating rod. The rotation of the rotating rod will drive the top wheel to rotate, causing it to continuously push the lifting frame to move up and down. The lifting frame will drive the connecting rod to push the cleaning brush to continuously scrape up and down on the left side of the dustproof net, thereby scraping off the dust on the dustproof net. The scraped-off dust will fall into the collection chamber for collection. The dust can be cleaned by opening the sealing cover.

[0015] The advantages of this application are:

[0016] (1) This application sets up a support component to support the shield and the DD motor so that it can drive the rotating component and the clamping component to drive the steering wheel to rotate. The support component itself can adjust the angle and the base component can extend and retract and adjust the front and rear angles of the support component so that the DD motor can be connected to the car steering wheel and set coaxially. The support component and the base component are placed at the bottom of the car for support, which has the function of facilitating stable support for the DD motor to drive the steering wheel to rotate.

[0017] (2) While clamping the car steering wheel with the clamping component, this application also drives the pressing component to move, so that the pressing component applies force to the front of the car steering wheel, thereby increasing the friction and preventing the clamping component from slipping, which has the function of facilitating the secure clamping of the car steering wheel.

[0018] (3) This application uses a heat dissipation component and an air intake component to dissipate heat from the DD motor running inside the shield. The air intake component has the function of blocking dust. While the DD motor drives the rotating component to rotate, it also drives the air intake component to perform self-cleaning, which helps to ensure heat dissipation efficiency. Attached Figure Description

[0019] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a right view of the overall structure of the present invention;

[0022] Figure 3 This is a cross-sectional view of the overall structure of the present invention;

[0023] Figure 4 This is a schematic diagram of the left part of the structure of the present invention;

[0024] Figure 5 This is a schematic diagram of the pressing component structure of the present invention;

[0025] Figure 6 This is the invention Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0026] Figure 7 This is the invention Figure 3 Enlarged schematic diagram of the structure at point B. Explanation of reference numerals in the attached figures

[0027] 1. Shielding cover; 2. DD motor;

[0028] 3. Support components; 301. Telescopic column; 302. Support sleeve; 303. Support base; 304. Worm gear; 305. Handwheel; 306. Worm gear structural component;

[0029] 4. Base assembly; 401. Base plate; 402. First electric push rod; 403. Pad strip; 404. First screw; 405. First limit rod; 406. Second screw; 407. Suction cup;

[0030] 5. Rotating assembly; 501. Rotating rod; 502. Rotating cover;

[0031] 6. Clamping assembly; 601. Support groove; 602. Sliding seat; 603. Fixed seat; 604. Second electric push rod;

[0032] 7. Pressing assembly; 701. First hydraulic chamber; 702. First hydraulic rod; 703. Pressing plate; 704. Second limiting rod; 705. Second hydraulic chamber; 706. Second hydraulic rod; 707. Pressing plate; 708. Telescopic rod;

[0033] 8. Heat dissipation components; 801. Cooling fan; 802. First metal mesh plate;

[0034] 9. Air intake assembly; 901. Air intake chamber; 902. Collection chamber; 903. Sealing cover; 904. Second metal mesh plate; 905. Dustproof net; 906. Cleaning brush; 907. Connecting rod; 908. Lifting frame; 909. Top wheel; 910. Sliding sleeve; 911. Support rod. Detailed Implementation

[0035] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without creative effort should fall within the scope of protection of the present application.

[0036] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be used interchangeably where appropriate for the purposes of describing embodiments of this application herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0037] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0038] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0039] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0040] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0041] Please see Figure 1-7This invention provides a technical solution: an EMC automatic steering test device, comprising: a shielding cover 1, with a DD motor 2 fixedly installed on the inner surface of the shielding cover 1; a support assembly 3, disposed at the bottom of the shielding cover 1, the support assembly 3 including a telescopic column 301, the telescopic column 301 being hinged to the bottom of the shielding cover 1, a support sleeve 302 slidably connected to the outer surface of the telescopic column 301, support seats 303 fixedly connected to both the left and right sides of the telescopic column 301, a worm gear 304 penetrating and rotatably connected to the right side of the support seat 303, a handwheel 305 fixedly connected to the right end of the worm gear 304, a worm wheel structure 306 meshing at the top of the worm gear 304, the worm wheel structure 306 being fixedly connected to the bottom of the shielding cover 1; a base assembly 4, fixedly installed at the lower end of the support sleeve 302; a rotating assembly 5, fixedly installed to the left side of the DD motor 2; a clamping assembly 6, fixedly installed on the outer surface of the rotating assembly 5; and a pressing assembly. 7. Pressing component 7 is fixedly installed on the inner surface of rotating component 5; heat dissipation component 8 is fixedly installed on the right side of the inner surface of shielding cover 1; air inlet component 9 is fixedly installed at the bottom of shielding cover 1. Shielding cover 1 is a high-permeability metal shielding shell used to block external strong electromagnetic radiation from directly coupling to the internal circuit of DD motor 2. The top of shielding cover 1 is provided with a door panel and a locking mechanism. The door panel is seamless when closed. The right end of shielding cover 1 is provided with an open opening. The upper end of telescopic column 301 is provided with a slot for accommodating worm 304 and worm wheel structure 306. The support seat 303 is L-shaped. There are two support seats 303. A bearing is provided between the support seat 303 and worm 304. The worm wheel structure 306 is specifically a half-ring worm wheel. By rotating handwheel 305, worm 304 is driven to rotate. Worm 304 will drive worm wheel structure 306 to make the angle of shielding cover 1 on telescopic column 301.

[0042] Please see Figure 2 The base assembly 4 includes a base plate 401, which is fixedly connected to the lower end of the support sleeve 302. A first electric push rod 402 is fixedly connected to the top of the base plate 401, and the upper end of the first electric push rod 402 is fixedly connected to the bottom of the support base 303. A pad 403 is provided at the bottom of the base plate 401, and a first screw 404 is rotatably connected to the top of the pad 403. The first screw 404 is threaded through the top of the base plate 401, and a first limiting rod 405 is fixedly connected to the top of the pad 403. The limiting rod 405 passes through and slides through the top of the base plate 401. The first electric push rod 402 is located at the bottom of the support seat 303 on the left side. There are two pads 403 and two first screws 404. Each pad 403 is provided with two first limiting rods 405. The pads 403 are embedded in the bottom of the base plate 401. The distance between the two pads 403 and the base plate 401 is adjusted by rotating the first screw 404, so as to adjust the front and rear tilt angle of the base plate 401.

[0043] Please see Figure 2 The base assembly 4 also includes a second screw 406, which is threaded through the top of the base plate 401. A suction cup 407 is rotatably connected to the lower end of the second screw 406. There are four second screws 406 and suction cups 407, which are set at the four corners of the bottom of the base plate 401. By rotating the second screw 406, the suction cups 407 are lowered so that they can adhere to the bottom of the inner surface of the vehicle body, thereby fixing the base plate 401.

[0044] Please see Figure 4 The rotating assembly 5 includes a rotating rod 501, which is fixedly connected to the output end of the DD motor 2 via a coupling. The rotating rod 501 passes through and is rotatably connected to the left side of the shield 1. A rotating cover 502 is fixedly connected to the left end of the rotating rod 501. A bearing is provided between the rotating rod 501 and the shield 1. The rotating cover 502 has a bowl-shaped structure. The rotating rod 501 is driven to rotate by the DD motor 2, which in turn drives the rotating cover 502 to rotate.

[0045] Please see Figure 7 The clamping assembly 6 includes a support groove 601, which is fixedly connected to the outer surface of the rotating cover 502. A sliding seat 602 is slidably connected to the inner surface of the support groove 601. A fixed seat 603 is fixedly connected to the outer surface of the sliding seat 602. A second electric push rod 604 is fixedly connected to the inner surface of the sliding seat 602. The second electric push rod 604 is fixedly connected to the outer surface of the rotating cover 502. There are three sets of clamping assemblies 6, which are arranged in a ring around the rotating cover 502. The outer surface of the sliding seat 602 is provided with a sliding groove. The inner surface of the support groove 601 is provided with a protrusion corresponding to the sliding groove on the sliding seat 602. The fixed seat 603 is hook-shaped. The sliding seat 602 slides and retracts in the support groove 601 by the retraction of the second electric push rod 604, thereby driving the fixed seat 603 to fix the car steering wheel.

[0046] Please see Figure 5The pressing assembly 7 includes a first hydraulic chamber 701, which is fixedly connected to the outer surface of the fixed base 603. A first hydraulic rod 702 is slidably connected to the inner surface of the first hydraulic chamber 701. A pressing plate 703 is fixedly connected to the outer end of the first hydraulic rod 702. A second limiting rod 704 is fixedly connected to the outer surface of the pressing plate 703. The second limiting rod 704 is slidably connected to the fixed base 603. A second hydraulic chamber 705 is slidably connected to the right side of the rotating cover 502. A pipeline connects the second hydraulic chamber 705 to the first hydraulic chamber 701. A second hydraulic rod 706 is slidably connected to the inner surface of the second hydraulic chamber 705. A pressing plate 707 is fixedly connected to the left end of the second hydraulic rod 706. A telescopic rod 708 is fixedly connected to the right side of the pressing plate 707. The telescopic rod 708 is fixedly connected to the inner surface of the rotating cover 502. The pressing assembly 7 consists of three sets, each set... The pressing assembly 7 has two pressing pieces 703 and two second limiting rods 704 and telescopic rods 708 on the pressing plate 707. The first hydraulic chamber 701 and the second hydraulic chamber 705 are connected and communicate with each other through a hose. Hydraulic oil is provided in the first hydraulic chamber 701, the second hydraulic chamber 705, and the hose. The left side of the pressing plate 707 is provided with a rubber layer and a raised structure. While the car steering wheel is fixed by the fixing seat 603, the car steering wheel will push the pressing piece 703, causing the first hydraulic rod 702 to slide into the first hydraulic chamber 701. The first hydraulic rod 702 will push the hydraulic oil in the first hydraulic chamber 701, which will be injected into the second hydraulic chamber 705 through the hose, thereby causing the second hydraulic rod 706 to extend from its inside, and then push the pressing plate 707 to press on the front of the car steering wheel to increase the friction and prevent slippage when the car steering wheel is turned.

[0047] Please see Figure 3 The heat dissipation component 8 includes a cooling fan 801, which is fixedly installed on the inner surface of the shielding cover 1. A first metal mesh plate 802 is fixedly connected to the right side of the shielding cover 1. The cooling fan 801 includes fan blades, a bracket, and a drive motor, which is used to dissipate heat from the DD motor 2 inside the shielding cover 1. The first metal mesh plate 802 is fully conductively connected to the right side opening end face of the shielding cover 1, and the first metal mesh plate 802 effectively provides electromagnetic shielding for the right side opening of the shielding cover 1.

[0048] Please see Figure 3 and Figure 7The air intake assembly 9 includes an air intake chamber 901, which is fixedly connected to the bottom of the shielding cover 1 and communicates with the inner surface of the shielding cover 1. A collection chamber 902 is fixedly connected to the bottom of the air intake chamber 901 and communicates with the inner surface of the air intake chamber 901. A sealing cover 903 is threadedly connected to the lower end of the collection chamber 902. A second metal mesh plate 904 is fixedly connected to the left side of the air intake chamber 901. A dustproof net 905 is fixedly connected to the inner surface of the air intake chamber 901. A cleaning brush 906 is slidably connected to the left side of the dustproof net 905. A connecting rod 907 is fixedly connected to the top of the cleaning brush 906. The connecting rod 907 passes through and slidably connects to the top of the air intake chamber 901 and the bottom of the shielding cover 1. A lifting frame 908 is fixedly connected to the upper end of the connecting rod 907. A top wheel 909 is slidably connected to the inner surface of the lifting frame 908. The top wheel 909 is fixedly connected to the outer surface of the rotating rod 501. The front of the lifting frame 908... Both sides are fixedly connected to sliding sleeves 910. A support rod 911 is slidably connected to the inner surface of the sliding sleeve 910. The support rod 911 is fixedly connected to the inner surface of the shielding cover 1. The air inlet chamber 901 facilitates air circulation inside the shielding cover 1 for heat dissipation. The second metal mesh plate 904 is fully conductively connected to the left opening end face of the air inlet chamber 901, which is used to effectively provide electromagnetic shielding for the left opening of the air inlet chamber 901. The top wheel 909 is eccentrically set on the outer surface of the rotating rod 501. The rotation of the rotating rod 501 will drive the top wheel 909 to rotate, which will continuously push the lifting frame 908 to reciprocate. The lifting frame 908 will drive the connecting rod 907 to push the cleaning brush 906 to continuously scrape up and down on the left side of the dustproof net 905, thereby scraping off the dust on the dustproof net 905. The scraped-off dust will fall into the collection chamber 902 for collection. The dust can be cleaned by opening the sealing cover 903.

[0049] Working principle: First, place the entire device inside the vehicle. Align the rotating rod 501 with the rotating cover 502 of the car's steering wheel. Then, rotate the handwheel 305 to drive the worm gear 304 to rotate. The worm gear 304 will drive the worm wheel structure 306 to adjust the angle of the shield 1 on the telescopic column 301. When the rotating rod 501 is adjusted to be parallel to the car's steering wheel axis, activate the first electric push rod 402 to push the telescopic column 301 to slide and rise within the support sleeve 302, so that the rotating rod 501 and the rotating cover 502 are aligned with the car's steering wheel. At this time, activate the second electric push rod 604 to drive the sliding seat 602 to... The support groove 601 slides and retracts, thereby driving the fixing seat 603 to fix the car steering wheel. By rotating the first screw 404, the distance between the two pads 403 and the base plate 401 is adjusted to adjust the front and rear tilt angle of the base plate 401 for correction, so that the rotating rod 501 is coaxially set with the rotation axis of the car steering wheel. At this time, by rotating the second screw 406, the suction cup 407 is lowered so that the suction cup 407 can be attached to the bottom of the inner surface of the car body to fix the base plate 401, thereby stably supporting the DD motor 2. While the car steering wheel is clamped by the fixing seat 603, the car steering wheel... The pressing plate 703 actuates the first hydraulic rod 702, causing it to slide into the first hydraulic chamber 701. The first hydraulic rod 702 pushes the hydraulic oil in the first hydraulic chamber 701, injecting it through the hose into the second hydraulic chamber 705. This causes the second hydraulic rod 706 to extend from within, pushing the pressing plate 707 to press against the front of the steering wheel to increase friction and prevent slippage when turning the steering wheel. At this time, the DD motor 2 drives the rotating rod 501, causing the rotating cover 502 to rotate, which in turn drives the fixed base 603 and the pressing plate 707 to rotate the steering wheel, thus stabilizing the steering wheel. The steering wheel is rotated to prevent slippage. The cooling fan 801 dissipates heat from the DD motor 2 inside the shield 1. The air intake chamber 901 ensures airflow inside the shield 1. When the rotating rod 501 rotates, it also drives the top wheel 909 to rotate, causing it to continuously push the lifting frame 908 to move up and down. The lifting frame 908 drives the connecting rod 907 to push the cleaning brush 906 to continuously scrape up and down on the left side of the dust filter 905, thereby scraping off the dust on the dust filter 905. The scraped-off dust falls into the collection chamber 902 and is collected. The dust can be cleaned by opening the sealing cover 903 to ensure the heat dissipation effect.

[0050] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An EMC automatic steering test device, characterized in that, include: A shield (1) is provided, and a DD motor (2) is fixedly installed on the inner surface of the shield (1). Support component (3), the support component (3) is disposed at the bottom of shield (1), the support component (3) includes telescopic column (301), the telescopic column (301) is hinged to the bottom of shield (1), the outer surface of the telescopic column (301) is slidably connected to support sleeve (302), support seats (303) are fixedly connected to both the left and right sides of the telescopic column (301), the right side of the support seat (303) is rotatably connected to worm gear (304), the right end of the worm gear (304) is fixedly connected to handwheel (305), the top of the worm gear (304) is engaged with worm wheel structure (306), the worm wheel structure (306) is fixedly connected to the bottom of shield (1); The base assembly (4) is fixedly installed at the lower end of the support sleeve (302); Rotating assembly (5), which is fixedly installed on the left side of DD motor (2); Clamping assembly (6), which is fixedly installed on the outer surface of rotating assembly (5); The pressing component (7) is fixedly installed on the inner surface of the rotating component (5); Heat dissipation component (8), which is fixedly installed on the right side of the inner surface of the shield (1); Air intake assembly (9) is fixedly installed at the bottom of shield cover (1).

2. The EMC automatic steering test device according to claim 1, characterized in that, The base assembly (4) includes a base plate (401), which is fixedly connected to the lower end of the support sleeve (302). A first electric push rod (402) is fixedly connected to the top of the base plate (401). The upper end of the first electric push rod (402) is fixedly connected to the bottom of the support seat (303). A pad strip (403) is provided at the bottom of the base plate (401). A first screw (404) is rotatably connected to the top of the pad strip (403). The first screw (404) is threaded through the top of the base plate (401). A first limiting rod (405) is fixedly connected to the top of the pad strip (403). The first limiting rod (405) is slidably connected through the top of the base plate (401).

3. The EMC automatic steering test device according to claim 2, characterized in that, The base assembly (4) further includes a second screw (406), which is threaded through the top of the base plate (401), and a suction cup (407) is rotatably connected to the lower end of the second screw (406).

4. The EMC automatic steering test device according to claim 1, characterized in that, The rotating assembly (5) includes a rotating rod (501), which is fixedly connected to the output end of the DD motor (2) via a coupling. The rotating rod (501) is rotatably connected to the left side of the shield (1), and a rotating cover (502) is fixedly connected to the left end of the rotating rod (501).

5. The EMC automatic steering test device according to claim 4, characterized in that, The clamping assembly (6) includes a support groove (601), which is fixedly connected to the outer surface of the rotating cover (502). A sliding seat (602) is slidably connected to the inner surface of the support groove (601). A fixed seat (603) is fixedly connected to the outer surface of the sliding seat (602). A second electric push rod (604) is fixedly connected to the inner surface of the sliding seat (602). The second electric push rod (604) is fixedly connected to the outer surface of the rotating cover (502).

6. The EMC automatic steering test device according to claim 5, characterized in that, The pressing assembly (7) includes a first hydraulic chamber (701), which is fixedly connected to the outer surface of the fixed base (603). A first hydraulic rod (702) is slidably connected to the inner surface of the first hydraulic chamber (701). A pressing piece (703) is fixedly connected to the outer end of the first hydraulic rod (702). A second limiting rod (704) is fixedly connected to the outer surface of the pressing piece (703). The second limiting rod (704) is slidably connected to the fixed base (603) through it. A second hydraulic chamber (705) is fixedly connected through and to the right side of the rotating cover (502). The second hydraulic chamber (705) is connected to the first hydraulic chamber (701) by pipeline. A second hydraulic rod (706) is slidably connected to the inner surface of the second hydraulic chamber (705). A pressing plate (707) is fixedly connected to the left end of the second hydraulic rod (706). A telescopic rod (708) is fixedly connected to the right side of the pressing plate (707). The telescopic rod (708) is fixedly connected to the inner surface of the rotating cover (502).

7. The EMC automatic steering test device according to claim 1, characterized in that, The heat dissipation component (8) includes a heat dissipation fan (801), which is fixedly installed on the inner surface of the shield (1), and a first metal mesh plate (802) is fixedly connected to the right side of the shield (1).

8. An EMC automatic steering test device according to claim 4, characterized in that, The air intake assembly (9) includes an air intake chamber (901), which is fixedly connected to the bottom of the shield (1). The air intake chamber (901) is connected to the inner surface of the shield (1). A collection chamber (902) is fixedly connected to the bottom of the air intake chamber (901). The collection chamber (902) is connected to the inner surface of the air intake chamber (901). A sealing cap (903) is threaded to the lower end of the collection chamber (902). A second metal mesh plate (904) is fixedly connected to the left side of the air intake chamber (901). A dustproof net (905) is fixedly connected to the inner surface of the air intake chamber (901). A cleaning brush (905) is slidably connected to the left side of the dustproof net (905). 6) A connecting rod (907) is fixedly connected to the top of the cleaning brush (906). The connecting rod (907) is slidably connected to the top of the air inlet chamber (901) and the bottom of the shield (1). A lifting frame (908) is fixedly connected to the upper end of the connecting rod (907). A top wheel (909) is slidably connected to the inner surface of the lifting frame (908). The top wheel (909) is fixedly connected to the outer surface of the rotating rod (501). A sliding sleeve (910) is fixedly connected to both the front and rear sides of the lifting frame (908). A support rod (911) is slidably connected to the inner surface of the sliding sleeve (910). The support rod (911) is fixedly connected to the inner surface of the shield (1).

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