CN-122009344-A - Cab with electromagnetic shielding performance

Abstract

The invention relates to the technical field of cab assemblies, in particular to a cab with electromagnetic shielding performance, which comprises a cab body and a windshield glass system fixedly arranged on the cab body, wherein vehicle door assemblies are arranged on two sides of the cab body through hinges, shielding curtains are uniformly adhered to the inside of the cab through adhesive buckles, the windshield glass system consists of a glass pressing plate, a rubber pressing plate, a shielding glass belt frame assembly and a conductive shielding rubber gasket, the installation position of the cab body of the windshield system is coated with conductive paint, the glass pressing plate and the rubber pressing plate press the shielding glass belt frame assembly, the conductive rubber gasket is pressed through fixing bolts, so that the shielding glass belt frame assembly is electrically connected with the cab body, a certain electromagnetic protection function can be provided for equipment and personnel in the cab, the electromagnetic shielding capability is not lower than 40dB in a C-band frequency range, the cab is suitable for various refitted chassis, and the improvement of the electromagnetic shielding performance does not reduce other performances of products.

Inventors

• SUN PENG
• ZHANG YAYUN
• LIU XINGXING
• DUAN GUOWEI
• ZHANG MING

Assignees

• 陕西重型汽车有限公司

Dates

Publication Date

20260512

Application Date

20241112

Claims (10)

1. 1. The utility model provides a cab that possesses electromagnetic shield performance, its characterized in that includes the cab body and fixed mounting windshield glass system on the cab body, door assembly is installed through the hinge to the both sides of cab body, and the inside of cab is evenly adhered with the shielding curtain through gluing the buckle, and windshield glass system comprises glass clamp plate, rubber clamp plate, shielding glass belt frame assembly and electrically conductive shielding rubber liner, and the windshield system is located the mounted position coating electrically conductive coating of cab body, and glass clamp plate, rubber clamp plate compress tightly shielding glass belt frame assembly, and electrically conductive rubber liner compresses tightly through fixing bolt to make shielding glass belt frame assembly and the electricity of cab body be connected.
2. 2. The cab with electromagnetic shielding performance according to claim 1, wherein the shielding glass belt frame assembly is composed of a glass assembly and a glass mounting frame, an electromagnetic shielding film and a conductive wire mesh are arranged in the glass assembly, one end of the conductive wire mesh is connected with the electromagnetic shielding film, and the other end of the conductive wire mesh is connected with the glass mounting frame through conductive adhesive so as to conduct the electromagnetic shielding film with the glass mounting frame.
3. 3. The cab with electromagnetic shielding performance according to claim 1, wherein the cab body is further internally provided with a pipeline wire harness, the pipeline wire harness comprises a pipeline and a cab wire harness, the pipeline is externally coated with a metal braiding wave-proof sleeve, the metal braiding wave-proof sleeve is fixed through a clamp, the pipeline penetrates through an orifice of the cab body, then the metal braiding wave-proof sleeve is pressed on the cab body through a bolt penetrating through a pressing plate, paint is removed from the periphery of the orifice of the cab body, and conductive paint is uniformly coated, so that the metal braiding wave-proof sleeve is electrically connected with the cab body.
4. 4. The cab with electromagnetic shielding performance according to claim 3, wherein the cab wire harness adopts a metal joint wall-passing structure, the cab wire harness is intensively installed at the front position of the cab body, the wall-passing joint of the cab wire harness is uniformly coated with the conductive paint, and the wall-passing joint of the cab wire harness is electrically connected with the cab body through the conductive shielding rubber gasket.
5. 5. The cab with electromagnetic shielding performance according to claim 1, wherein the door assembly is provided with a door glass system, a door welding assembly and a door sealing strip, the door sealing strip is clamped on a door frame seam allowance edge of the cab body, the door frame seam allowance edge of the cab body is coated with conductive paint so that the door sealing strip is electrically connected with the cab body after being installed, a part, which is contacted with the door sealing strip, of the door welding assembly is coated with the conductive paint, and the door welding assembly presses the door sealing strip to be contacted, so that the door glass system, the door welding assembly, the door sealing strip and the cab body are electrically connected.
6. 6. The cab with electromagnetic shielding performance according to claim 1, wherein the shielding curtain is provided with a shielding cloth assembly, a conductive fastening tape and a vehicle door shielding curtain assembly, a base material of the shielding cloth assembly is copper-nickel composite flexible shielding cloth, a hook surface of the conductive fastening tape is sewn and fixed through a suture and is coated with conductive paint, the vehicle door shielding curtain assembly is of a three-layer structure, an inner layer and an outer layer are oxford cloth, and the middle is copper-nickel composite flexible shielding cloth.
7. 7. The cab with electromagnetic shielding performance according to claim 1, wherein the cab body is further provided with a body cover plate, the body cover plate is used for shielding a hole reserved in the cab body, the installation surface of the body cover plate is uniformly coated with conductive paint, the corresponding installation position of the cab body is also coated with conductive paint, and the body cover plate is electrically connected with the cab body through a conductive shielding rubber gasket after installation.
8. 8. The cab with electromagnetic shielding performance according to claim 1, wherein the cab body is provided with a wire harness mounting hole at the tail end of the electric appliance lamp, the mounting surface of the electric appliance lamp is coated with conductive shielding paint, the outer surface of the wire harness is coated with flexible shielding cloth, the periphery of the mounting hole on the cab body is uniformly coated with the conductive paint, and the electric appliance lamp is electrically connected with the cab body after being fixed by bolts.
9. 9. The cab with electromagnetic shielding performance according to claim 1, wherein the steering column is mounted on the cab body, and the mounting surfaces of the cab body and the steering column are coated with conductive shielding paint and are in conductive communication with the cab body through fixing bolts.
10. 10. The cab with electromagnetic shielding performance according to claim 1, wherein each mounting member position in the cab body is provided with a blind nut seat mounted by full-welding.

Description

Cab with electromagnetic shielding performance Technical Field The invention relates to the technical field of cab assemblies, in particular to a cab with electromagnetic shielding performance. Background The existing cab mainly ensures various driving and riding functions, a large-area front windshield glass and a large-area vehicle door glass are installed for ensuring a better visual field, a large number of holes are reserved in the vehicle body for installing wire harnesses, pipelines and other components entering and exiting the cab and functional components, and the movable components such as the vehicle door and the like realize rain-proof sealing performance and air tightness of a vehicle gap through installing sealing strips. Before electromagnetic shielding treatment is carried out, the overall shielding effectiveness of the cab is less than 20dB, electromagnetic waves can enter the cab through glass, wiring harnesses, holes, door gaps and the like, interference and damage are caused to equipment in the cab, and meanwhile, injury is caused to passengers. The prior art has the following disadvantages: 1) The cab body is of a steel plate welding structure, in order to fix internal components, mounting holes and connecting nuts are reserved on the cab body, the holes cannot be completely sealed after the components are mounted, and electromagnetic waves can enter the cab along the component mounting holes reserved in the cab body. 2) Common glass does not have conductivity, and glass frame belong to different materials, can not realize conductive communication, can not block electromagnetic wave and pass through, can not play the effect of restraining or weakening electric field and magnetic field. 3) The surface of the cab body is coated with common paint, so that the cab body cannot be continuously and electrically communicated with external installation components due to the fact that the common paint does not have conductivity. 4) The common sealing strip and the rubber gasket have no conductive performance and cannot realize conductive communication between the mounting component and the body. 5) Electromagnetic waves enter the cab along the harness that has not been subjected to the shielding and filtering process. Disclosure of Invention In view of the problems in the prior art, an object of the present invention is to provide a cab with electromagnetic shielding performance. The cab with the electromagnetic shielding performance comprises a cab body and a windshield glass system fixedly arranged on the cab body, wherein vehicle door assemblies are arranged on two sides of the cab body through hinges, shielding curtains are uniformly adhered to the inside of the cab through adhesive buckles, the windshield glass system consists of a glass pressing plate, a rubber pressing plate, a shielding glass belt frame assembly and a conductive shielding rubber gasket, the installation position of the cab body is coated with conductive paint, the glass pressing plate and the rubber pressing plate compress the shielding glass belt frame assembly, and the conductive rubber gasket compresses through fixing bolts, so that the shielding glass belt frame assembly is electrically connected with the cab body. Preferably, the shielding glass belt frame assembly consists of a glass assembly and a glass mounting frame, wherein an electromagnetic shielding film and a conductive wire mesh are arranged in the glass assembly, one end of the conductive wire mesh is connected with the electromagnetic shielding film, and the other end of the conductive wire mesh is connected with the glass mounting frame through conductive adhesive so as to conduct the electromagnetic shielding film with the glass mounting frame. Preferably, the cab body is further internally provided with a pipeline wire harness, the pipeline wire harness comprises a pipeline and a cab wire harness, the pipeline is coated with a metal braiding wave-proof sleeve, the metal braiding wave-proof sleeve is fixed through a clamp, the pipeline penetrates through an orifice of the cab body, then the metal braiding wave-proof sleeve is pressed on the cab body through a bolt penetrating through a pressing plate, paint is removed from the periphery of the orifice of the cab body, and conductive paint is uniformly coated, so that the metal braiding wave-proof sleeve is electrically connected with the cab body. Preferably, the cab wire harness adopts a metal joint wall-passing structure, the cab wire harness is intensively installed at the front part of the cab body, the wall-passing joint of the cab wire harness is uniformly coated with the conductive paint, and the wall-passing joint of the cab wire harness is electrically connected with the cab body through the conductive shielding rubber gasket. Preferably, the door assembly is provided with a door glass system, a door welding assembly and a door sealing strip, the door sealing strip is clamped on the edge of a d