39results about How to "Play the role of shock and noise reduction" patented technology

The invention provides a comprehensive shock absorbing and noise reducing device of a motor. The motor comprises a motor body and a motor cover. The comprehensive shock absorbing and noise reducing device comprises a sealing ring arranged on an air inlet of the motor body. Due to a first-level damping structure and a second-level damping structure of the sealing ring, the movement of the motor body can have the buffering and damping effects in the direction where a motor rotating shaft is located and the normal direction of the motor rotating shaft respectively, the second-level damping structure is an S-shaped bending structure located on an upper damping piece, and a pressing plate is arranged on one protrusion of the S-shaped bending structure. The pressing plate can prevent the motor from being sucked into an air inlet of the motor body during work of the motor, and the damping and noise reducing functions are achieved under the premise that the air volume of the motor is not affected.

The invention relates to the field of bus ducts, in particular an efficient heat-dissipation type bus duct. The bus duct comprises a bus duct shell which is a hollow structure, the bus duct shell comprises a top plate, a support frame and a bottom plate, multi-group of electric conductors are arranged in a placing cavity of the support frame, and a plastic insulating layer is filled in the placing cavity; a side plate at each of two sides of the support frame is provided with a heat conducting layer, the outside of the heat conducting layer is provided with a heat-dissipation net layer, heat-dissipation curved sheets and heat-dissipation ribs are respectively arranged between the heat-dissipation net layer and the heat conducting layer, the heat-dissipation curved sheets are arranged in waveform, and the heat-dissipation curved sheets and the heat-dissipation ribs are respectively fixed and connected with the heat-dissipation net layer; the bottom surface of the bottom plate is provided with a rubber cushion. The bus duct disclosed by the invention is simple in structure and low in cost, the structure of multi-layer of heat-dissipation and cooling is adopted so that the heat is fast volatilized, the aim of heat-dissipating, cooling and damping through the bus duct shell is achieved, the normal use of the bus duct is guaranteed, and the service life is prolonged.

The invention relates to a broach type bridge telescopic device which has the advantages of shifting all around, and being waterproof, slag-proof, noise-reducing, bounce-proof, uniform in stress, symmetrical in design, high in solid pouring safety performance and long in service life. The broach type bridge telescopic device comprises a joint-crossing middle tooth plate (3), first plates (2.1/2.2)symmetrically arranged on two sides of the joint-crossing middle tooth plate (3) and a displacement control assembly (5) arranged below the first plates (2.1/2.2) and the middle gear plate (3), wherein the upper end part of an elastic element (4) is fixedly arranged below the middle tooth plate (3), the lower end part of the elastic element (4) is fixedly arranged in the middle of a displacementcontrol cross beam (5.1), and displacement control cross beams (5) are connected to integrally ensure synchronization of joint width and an adhesive tape seat plate (6) is used for mounting a waterproof rubber strip (7), the waterproof rubber strip (7) mounted between a stainless steel plate (2) and the adhesive tape seat plate (6) to provide a reliable drainage and waterproof functions for the telescopic device.

The invention discloses an air curtain noise reduction device for an offshore wind power farm. The air curtain noise reduction device comprises a bubble curtain arranged in the mode of surrounding theinner side of a steel pipe pile, and an aquiculture area is located in the bubble curtain; the bubble curtain is connected with the steel pipe pile; and the bubble curtain comprises an inner-layer waterproof layer and an outer-layer waterproof layer, a hollow structure is formed between the inner-layer waterproof layer and the outer-layer waterproof layer, a bubble generating device is arranged between the inner-layer waterproof layer and the outer-layer waterproof layer, and the bubble generating device is located on the lower part of the bubble curtain. According to the air curtain noise reduction device provided by the invention, shock absorption and noise reduction can be achieved, and oxygen can be continuously supplied to the aquiculture area to improve the living condition of fishschools.

The invention discloses a vehicle gear shifting switching mechanism which is provided with a bearing (4), an inertia hammer rocker arm (1) and an adjustment arm assembly (12), wherein the bearing (4) is fixed on a vehicle; the near middle part of the inertia hammer rocker arm (1) is rotationally mounted on the bearing (4); one end of the inertia hammer rocker arm (1) is connected with a gear shifting inhaul cable (14); one end of the adjustment arm assembly (12) is articulated with the other end of the inertia hammer rocker arm (1); and the other end of the adjustment arm assembly (12) is articulated with a gear shifting rocker arm (13). The gear shifting quality of a speed changer can be further improved in a limited space. Furthermore, due to the reduction of the size of the vehicle gear shifting switching mechanism, the vehicle gear shifting switching mechanism is light in weight and convenient to adjust.

The invention relates to the technical field of insulating structures of dry type transformers. The fatal defect in the dry type transformation industry is that the size and material consumption of a dry type transformation which is mainly insulated by adopting epoxy resin and air, the phenomenon of creepage on the surfaces of the high-voltage coils during running, and the transformer is burned down under severe conditions. The invention discloses a dry type transformer and production process steps of a high-voltage coil thereof. The high-voltage coil consists of an insulating silicon rubber composite material, a grid, an electromagnetic coil, a grid, an insulating silicon rubber composite material and cast epoxy resin in sequence from inside to outside. The dry type transformer has the advantages of simple structure and convenience in process operation. The technical performance parameters of the dry type transformer can be ensured, the reliability is enhanced, cost is reduced, the service life is long, and noise can be lowered.

The invention discloses a transmission connecting device. The transmission connecting device comprises a resin transmission piece which is suitable for being connected between two transmission pieces,and the two transmission pieces serve as a power source and an output shaft. Thus, through mode that the resin transmission piece is connected between the two transmission pieces, the resin transmission piece can play the roles of damping and noise reduction, a protecting role to parts can be achieved, the connecting device is simple in structure, convenient to machine and manufacture, and low inraw material cost, and the manufacturing cost can be reduced.

The invention provides a damping rotary seal multi-rotary-hammer crusher. The crusher comprises upper and lower bearing housings, driving and driven transmission shafts, driving and driven gears, a bearing block ventilation cover and a bearing block stuffy cover and is characterized in that a crusher barrel is cylindrical; the bearing housings are installed at the upper and lower parts of the crusher barrel respectively; the upper and lower bearing housings are respectively connected with the bearing block ventilation cover and the bearing block stuffy cover; upper and lower tapered roller bearings are installed in the upper and lower bearing housings; the driving and driven transmission shafts penetrate through the bearing block ventilation cover; the middle parts of the driving and driven transmission shafts are arranged in the crusher barrel; the bottoms of the driving and driven transmission shafts are connected with the bearing block stuffy cover; sanding hammers are installed on the transmission shafts respectively and are connected with the transmission shafts by splines; a wearproof liner is installed in the crusher barrel; a wearproof liner damping sleeve is inlaid in the outer wall of the wearproof liner; a rotary seal ring is fixed together with the driving and driven transmission shafts via rotary seal ring set screws. The crusher has the characteristics of improvement of the work efficiency, reduction of the energy consumption, damping and noise reduction.

The invention relates to a multi-shaft rotation hammer staggered shear crusher, which is characterized in that the crusher cylinder is a cylindrical cylinder, the upper portion and the lower portion of the crusher cylinder are respectively provided with a bearing box, the upper bearing box and the lower bearing box are respectively connected with a bearing seat through cover and a bearing seat sealed cover, an upper cone roller bearing and a lower cone roller bearing are arranged in the upper bearing box and the lower bearing box, a drive transmission shaft and a driven transmission shaft penetrate through the bearing seat through cover, the middle portions are arranged in the crusher cylinder, the bottom portions are connected with the bearing seat sealed cover, the transmission shafts are respectively provided with a sanding hammer, the sanding hammer is connected with the transmission shaft through spline, a drive gear and a driven gear are inclined tooth cylinder gears, a wear resistance lining cylinder is arranged in the crusher cylinder, a wear resistance lining cylinder shock-reducing sleeve is embedded on the outer wall of the wear resistance lining cylinder, the wear resistance lining cylinder is a cylinder formed from two semi-arc plates, and a wear resistance lining cylinder seam-aligning shock-reducing sealing pad is arranged in the gap of the two semi-arc plates of the wear resistance lining cylinder. The multi-shaft rotation hammer staggered shear crusher has characteristics of work efficiency improving, energy consumption reducing, shock reducing, and noise reduction.

The invention discloses a damping and cooling structure of a case fan. The damping and cooling structure comprises a mounting plate; a filtering plate is arranged above the mounting plate; a pluralityof vent holes for mounting fans are formed in the mounting plate; a plurality of damping grooves are formed around the vent holes in the mounting plate; cooling silica gel is arranged on the bottom surfaces of the damping grooves; buffer rings are arranged on the side surfaces of the damping grooves; damping screws are arranged in the damping grooves in a penetrating mode; the damping screws sequentially penetrate through the cooling silica gel, the fans and the filtering plate; a rotating arm is arranged at one end of the filtering plate; the rotating arm is rotationally connected with the mounting plate; fixed pieces connected with the damping screws are arranged on the front side and the rear side of the filtering plate respectively; sliding rods arranged in the length direction of thefiltering plate are arranged above the fixed pieces; a cleaning brush strip arranged in the width direction of the filtering plate is arranged on the sliding rods; and the two ends of the cleaning brush strip are in sliding connection with the sliding rods. The damping and cooling structure has the characteristics of good cooling performance, high stability and difficulty in generating vibrationand noises.

The invention relates to a pit-free elevator, in particular to a pit-free elevator reformed and additionally mounted in an old residential building. The pit-free elevator comprises derrick stand columns, a derrick cross beam used for stabilizing the derrick stand columns, and an elevator car arranged between the derrick stand columns in a sliding mode. A bottom falling damping device is arranged at the bottom of the elevator car, and the derrick stand columns are buried on a multi-layer force holding structure below the outdoor ground plane in a supporting mode. The elevator is the pit-free elevator. The lowest point where the elevator car arrives is located above the elevation position of a unit canopy, the bottom of the elevator car is provided with the bottom falling damping device andthe derrick stand columns which are supported on the multi-layer force holding structure buried below the outdoor ground plane, the structures can play a role in damping and noise reduction in the elevator running process, and interference to residents on a first floor is reduced.

The invention relates to a marine high-sound-insulation floating floor structure. The structure comprises a damping coating I arranged on a steel deck, and ceramic wool dividing strips which are arranged on the damping coating I and are close to a steel trunk bulkhead, a refractory deck dressing layer is arranged on the portion, between the ceramic wool dividing strips, of the damping coating I, arock wool board is arranged on the refractory deck dressing layer, a galvanized steel sheet I is arranged on the rock wool board, a damping coating II is arranged on the galvanized steel sheet I, a galvanized steel sheet II is arranged on the damping coating II, and the upper surface of the galvanized steel sheet II and the upper end faces of the ceramic wool dividing strips are at the same level. The structure is reasonable in structure arrangement, good in damping and noise reduction effect and high in resistance to deformation, and the fire rating reaches A-60 level.

The invention discloses an air source heat pump which comprises a shell, a fan, an evaporator, a compressor and an electric control element. The shell is provided with a middle partition plate for dividing an internal containing space. The fan is arranged on a fan frame on one side of the middle partition plate. The evaporator is arranged along the side wall and the rear wall of the shell, and the evaporator and the fan are located on the same side of the middle partition plate. The compressor and the electric control element are both arranged on the other side, opposite to the fan, of the middle partition plate. The air source heat pump further comprises a condenser which covers the inner bottom of the shell and penetrates through the middle partition plate, and a protection plate abutting against the middle partition plate is arranged on the condenser. According to the air source heat pump provided by the invention, the condenser is arranged at the bottom of a machine body and penetrates through a fan bin and a press bin, and on the premise that the stability of the gravity center structure of the whole machine is guaranteed, the containing space in the machine shell is fully utilized. In addition, the invention further provides the protection plate for protecting the condenser, the protection plate and the fan frame are in an assembly relationship, the stability of the machine body structure is further improved, meanwhile, noise reduction and shock absorption functions are achieved, and the air source heat pump is suitable for application and popularization.

The invention discloses a damping and noise reduction structure of an electric scroll compressor. The damping and noise reduction structure comprises an end cover, a static vortex plate, a supportingdisc and a machine shell, wherein the machine shell is of a cylindrical structure, the end cover is arranged at the top of the shell, a concave structure is arranged in the machine shell, the supporting disc is arranged at the bottom of the sunken structure of the machine shell, the static vortex plate is arranged on the upper portion of the supporting disc, a rubber gasket A is arranged between the end cover and the machine shell, a rubber gasket B is arranged at the contact part of the supporting disc and the bottom of the sunken structure of the machine shell, the rubber gasket A and the rubber gasket B are bonded to the machine shell through glue or glue points; and the upper surface and the lower surface of the rubber gasket A and the rubber gasket B are provided with raised floatingpoints correspondingly. The damping and noise reduction structure has the advantages that the vibration can be reduced during acceleration and deceleration operation of the compressor, and the noise produced by the compressor can be reduced.