46results about How to "Guaranteed quiet effect" patented technology

In this vehicle body floor structure, stiffeners that extend to a rear of a front cross member and that have a U-shaped concave portion that is open at to top thereof when viewed in a cross-section of a vehicle are joined to a bottom surface on both side portions of floor panel. Beads that have a U-shaped concave portion when viewed in a cross-section of the vehicle are provided at a rear portion of the floor panel, and the beads are aligned with the concave portion of the stiffeners and are provided continuously with the stiffeners.

The invention relates to a vertical hinged lateral overturned door system, and provides a noiseless vertical hinged lateral turned door system. An overturn mechanism is arranged between a door leaf and a rotating shaft vertical plate of a door frame, so that the door leaf is overturned laterally in the process of horizontally pushing a door, and a door-opening sweeping space is reduced; meanwhile, a buffer component is arranged in the overturn mechanism, and friction during rotation is reduced; damping pulley mechanism is arranged between a lintel horizontal plate and the door leaf, and collision between the door leaf and the door frame is eliminated in the door opening and door closing travels; side edges of the door leaf is provided with sealing strips to further reduce the collision between the door leaf and the door frame and achieve a soundproof effect; the locking end of the door leaf is provided with a noiseless lock body, and noise in the locking and unlocking process is avoided. According to the scheme, the noise generated in the door using process is comprehensively eliminated, and home and office environments are silenced.

The invention relates to a film removing method and film removing device for coated glass. Particularly, scribing film removing is conduced on the coated glass by adopting laser, and the problem that chemical etching pollutes the environment is solved. Meanwhile, due to the fact that the working range of a high-speed galvanometer is limited, the film removing method comprises the steps that the whole piece of coated glass is divided into at least two film removing areas through cooperation of software and a CCD sensor, an image of one film removing area is acquired through the CCD sensor, even positioning points are set, and the software acquires the positioning points on a displacement path in real time; when film removing is conducted on the next film removing area, overlapped film removing is firstly conducted on the part, close to the junction of the two film removing areas, of the precious film removing area, a displacement path of overlapped film removing can be acquired according to the positioning points located on the displacement path in the area subjected to film removing, therefore, a film removing line is more coherent, splicing lines or splicing traces generated at the junction of the two film removing areas are eliminated, and the splicing problem of large-breadth coated glass etching is solved.

The invention discloses a rotor and inflatable airbag combined type floating aircraft with vectored thrust. The rotor and inflatable airbag combined type floating aircraft with vectored thrust comprises an aerostat and rotor power modules. Rotors in the rotor power modules are mounted on the round surface with maximum diameter at equal intervals in the circumferential direction by using 8-shaped frames and flexible film extended blades, which are molded by laser at one time; the rotors in the rotor power modules are arranged in horizontal and vertical layouts; and the rotors in the rotor powermodules can realize that the vector-propelled rotor modules regularly programs power output and can finish rapid motions, such as climbing, descending, hovering, spinning and so on, of the aircraft in each direction. A flexible film solar cell module is designed at the top end of an aerostat and a charging unit and a central control unit are designed at the bottom end of the aerostat. The rotor and inflatable airbag combined type floating aircraft with vectored thrust is mainly applied to near spaces, closed indoor spaces and semi-closed spaces, has the advantages, such as long flight duration, large ceiling, stable floating, low flight noise and so on, of the aerostat and also has the advantages, such as higher mobility and operating performance, of a multi-rotor unmanned aerial vehicle.

The invention discloses a double-cylinder ultra-low mute diesel generating set which comprises a protection case, wherein a cavity is formed inside the protection case; a damping device is arranged atthe lower end of the protection case; power generating equipment is arranged in the cavity; two lead screws are fixedly arranged on opposite side walls in the cavity; a moving block penetrates through the lead screws; an oil cylinder is fixed on one side of the protection case; the tail end of a piston rod of the cylinder penetrates through the protection case and is fixed on one side of the moving block; an air blower is fixedly arranged at the upper end of the protection case; the lower end of the air blower is connected with a connecting pipe; and two sides at the lower end of the moving block are rotationally connected with air cylinders.

The invention provides a soundproof wood-plastic floor which comprises a wood-plastic base layer, an IXPE lower buffer layer arranged on the lower surface of the wood-plastic base layer, and an upper buffer layer connected to the upper surface of the wood-plastic base layer. The upper buffer layer can buffer impact force and vibration on the wood-plastic floor when people walk on the floor, and the lower buffer layer can secondarily buffer impact force and vibration generated to the ground when the wood-plastic floor is stressed. According to the wood-plastic floor, through the dual buffering effects and the sound absorption effect of the upper buffer layer and the lower buffer layer, noise generated by the floor when people walk on the floor is effectively lowered, and a good soundproof effect is achieved.

Disclosed is a vehicle steering apparatus capable of facilitating the user's convenience by providing on a hub positioned at the center of a steering wheel an irrotational core part on which various electric modules are to be mounted so that it is possible to use the electric modules conveniently regardless of a steering angle. The vehicle steering apparatus comprises a housing fixed to a vehiclebody, a steering wheel rotatably mounted relative to the housing, a steering gear set installed to transmit rotation of the steering wheel to a steering shaft, and an irrotational core part fixed to the housing and allowing an outer wire harness to be wired thereto.

The invention belongs to the technical field of friction abnormal sound experiment equipment, and particularly relates to a material friction abnormal sound test with a magnetic levitation type objective table; the test bed comprises an objective table, a rack and at least two magnetic levitation bearings, the objective table is arranged above the rack, the magnetic levitation bearings are arranged in parallel, mounting shafts penetrate through rotors of the magnetic levitation bearings, and the mounting shafts are mounted on the rack. A gear is coaxially and statically connected to an outer ring of the magnetic levitation bearing, and a rack is fixedly connected to the bottom face of the objective table and engaged with the gear. The objective of the invention is to solve the problem that an objective table cannot guarantee a mute effect during a material friction abnormal sound test.

The invention provides a generator set. The generator set comprises an engine, a generator and a sound insulation box, wherein the engine comprises an air inlet fan; the generator is driven by the engine; the engine and the generator are both arranged in the sound insulation box, and the sound insulation box comprises a first side plate; a first air inlet is formed in the first side plate, an air inlet part is arranged on one side of the first side plate, an air inlet cavity is formed in the air inlet part, and the first air inlet communicates with the air inlet cavity; and a first exhaust hole is formed in the air inlet part, the first exhaust hole communicates with the air inlet cavity, and the first exhaust hole and the air inlet fan are coaxially arranged. By arranging the air inlet part on the sound insulation box of the generator set, outside air directly enters the air inlet fan of the engine through the air inlet cavity, and thus the mute effect, the cooling effect and the air inlet efficiency of the generator set are guaranteed.

This air conditioning device comprises a relay that has a first decompression device. The relay has a flow path switching valve that is provided to first refrigerant piping connected between a compressor and a load-side heat exchanger, and bypass piping that is connected to the flow path switching valve at one end, and at the other end is connected to second refrigerant piping connected between the first decompression device and a heat source-side heat exchanger. The flow path switching valve has, as internal flow paths, a first flow path communicating the first refrigerant piping and the bypass piping, and a second flow path communicating the compressor and the load-side heat exchanger via the first refrigerant piping, and switches the internal flow paths such that one internal flow path among the first flow path and the second flow path is open while the other internal flow path is closed.

The invention discloses an environment-friendly roller shutter which comprises two vertical rods, a protective cover is fixedly installed at the top ends of the two vertical rods, a through groove isformed in the middle of the bottom end of the protective cover, tail inserting parts are fixedly installed on the two sides of the inner wall of the protective cover, a steel pipe shaft is connected between the two tail inserting parts in a penetrating mode, a roller shutter body is connected to the surface of the steel pipe shaft in a winding mode, the bottom end of the roller shutter body is connected with the through groove in an inserting manner, and the two sides of the roller shutter body are connected with limiting grooves formed in one sides of the corresponding vertical rods in an embedded mode. By means of sound absorption holes formed in the outer wall of a fixed box and silencers and sound absorption cotton installed in the fixed box, noise pollution generated in the winding and unwinding process of a tubular motor and the roller shutter body is conveniently and effectively absorbed, the mute performance of the roller shutter in the using process is guaranteed, noise pollution is avoided, the roller shutter body is composed of a plurality of shutter pieces, the plurality of shutter pieces are embedded in connecting grooves through connecting pieces, stretching and retracting of T-shaped columns are controlled through second limiting springs, the shutter pieces are convenient to assemble and disassemble, and the damaged shutter pieces are convenient to replace.