11results about How to "Reduce driving noise" patented technology

The application discloses an engineering tire pattern structure with equal groove width, variable pitch, low noise and full wear period, and the like, and relates to the technical field of tires. The application breaks through the technical bottleneck of single performance, inconsistent performance of each pitch, uneven wear, poor structural reliability and low universality in the design of a traditional engineering tire variable pitch, and through integrated innovative design of equal groove width basic design+density differentiation matrix solid convex point+three-order universal pitch proportion, the application realizes the coordinated consideration of low noise, performance consistency, uniform wear and structural reliability, and is suitable for the use requirements of engineering tires in heavy load and multiple working conditions in all directions.

The invention relates to the technical field of vehicles, and discloses a rim, a manufacturing method of the rim and a vehicle. The rim comprises a rim main body and a noise reduction part; the noise reduction part is spirally and continuously wound on the rim body in the circumferential direction of the rim body and is at least partially connected with the peripheral wall of the rim body, the number of turns of the noise reduction part wound on the peripheral wall is i, and i is larger than or equal to 3; the noise reduction part is used for absorbing at least part of noise in the environment where the rim body is located and absorbing at least part of vibration generated by the rim body. According to the rim, the manufacturing method of the rim and the vehicle, the risk and probability that the noise reduction part arranged on the rim falls off are low.

The invention relates to a road paving structure and a construction method thereof, and the road paving structure comprises a concrete base layer, a waterproof layer, a hard asphalt lower surface layer, a first bonding layer and an epoxy modified rubber asphalt surface layer which are sequentially arranged from bottom to top; and the void ratio of the epoxy modified rubber asphalt surface layer is 8-18%. Compared with the traditional SMA-13 pavement, the pavement has the beneficial effects that the noise inside and outside the vehicle is obviously reduced at the running speed of 80km / h, the driving experience is optimized, the stability of the pavement reaches the standard in the service period, and the pavement can be popularized and used.

The utility model discloses large-texture anti-skid noise-reduction road surface milling forming equipment which comprises a rack assembly, a diesel engine and a hydraulic system are arranged on the rack assembly, an electric control system for controlling the equipment is arranged in the middle of the rack assembly, walking and steering systems are arranged on the two sides of the lower surface of the rack assembly, and the hydraulic system is arranged on the rack assembly. A belt conveying system is installed at one end of the rack assembly and composed of a sweeping roller and a belt conveyor, the sweeping roller is located at one end of the belt conveyor, a hanging frame is fixed to the rack assembly, the lower end of the hanging frame is connected with a milling drum assembly through a milling chamber assembly, and a watering system is arranged at the lower end of the hanging frame. The water spraying system is located on one side of the milling drum assembly, and the milling drum assembly comprises the milling drum body, so that the strength, durability, wear resistance, deformation resistance and sideslip resistance of a road surface can be greatly improved, the potential safety hazard of vehicle driving is reduced, the driving noise can be remarkably reduced, and the pollution of the noise to the environment is reduced.

This invention relates to the field of bridge technology, specifically disclosing a seamless expansion joint grooving device for bridges, comprising a grooving base, a spring assembly, grooving pads, an anchoring slide, and a pre-embedded steel plate. The upper surface of the strip-shaped grooving base has a strip-shaped arc-shaped groove. The spring assembly is a strip-shaped arc-shaped structure formed by connecting several parallel arc-shaped spring segments end-to-end, placed within the arc-shaped groove along its length. Two grooving pads are symmetrically arranged on either side of the spring assembly. The upper end of each grooving pad abuts against the lower surface of a stop block in the upper opening of the arc-shaped groove. The lower end of the anchoring slide has a sphere, which supports the spring assembly. The upper end of the anchoring slide is connected to the pre-embedded steel plate. This seamless expansion joint grooving device not only effectively limits the vertical displacement of the elastic expansion joint in the seamless expansion joint, preventing it from arching above the road surface, but also facilitates subsequent maintenance.

The embodiment of the present application provides a transportation system, including: a transportation pipeline, a track, a platform, an air shaft and a telescopic closed passage; the platform is provided with a platform partition door, which is used to separate the platform into a platform boarding and disembarking area with a vacuum degree of standard atmospheric pressure and a platform track area with a vacuum degree of a first preset value; both ends of the platform track area are respectively connected to the transportation pipeline, and the vacuum degree in the transportation pipeline is a first preset value, which is less than the standard atmospheric pressure; the track is arranged in the transportation pipeline and the platform track area; a plurality of air shafts are arranged at intervals along the extension direction of the transportation pipeline; one end of the telescopic closed passage is connected to the side of the platform partition door facing the platform track area, and the other end can be extended to the platform track area to connect with the outer periphery of the vehicle door. The transportation system provided by the embodiment of the present application can increase the vehicle driving speed and reduce energy consumption.

The embodiment of the present application provides a transportation system, including: a transportation pipeline; the transportation pipeline is a closed pipeline, the vacuum degree inside of which is a first preset value less than the standard atmospheric pressure; a platform with a vacuum degree of standard atmospheric pressure, including a platform boarding and alighting area and a platform track area, and the two ends of the platform track area are respectively connected to the transportation pipeline; a track, arranged in the transportation pipeline and the platform track area; an interval closed door, respectively arranged at the two ends of the platform track area; when the interval closed door is closed, the platform track area with a vacuum degree of standard atmospheric pressure and the transportation pipeline with a vacuum degree of the first preset value are separated; an air shaft; a plurality of air shafts are arranged at intervals along the extension direction of the transportation pipeline, and an air shaft partition door for separating the air shaft from the transportation pipeline is arranged at the end of the air shaft facing the transportation pipeline. The transportation system provided by the embodiment of the present application can increase the vehicle driving speed and reduce energy consumption.

The utility model discloses a plate chain type anti-skidding armor which comprises a connecting rope and a plurality of armor pieces, the connecting rope penetrates through all the armor pieces to connect all the armor pieces together, a rope locking device is arranged on the connecting rope, and the two ends of the connecting rope can be locked and fixed through the rope locking device. And therefore, all the clasps are fixed together to form an anti-skid cylinder which can be tightly sleeved on the outer circumferential surface of the wheel. The plate chain type anti-skid armor has the beneficial effects that the plate chain type anti-skid armor is easy, convenient and rapid to disassemble and assemble, the multiple armor pieces wrapping the tire are connected and fixed to the outer circumferential face of the wheel through the connecting ropes, operation is easy and convenient, use is easy, installation is not difficult, installation errors are not likely to occur, and vehicle damage caused by the installation errors is effectively avoided.

The utility model discloses a seamless bio-based composite elastomer expansion device. A framework assembly comprises a pair of edge beams supported by a plurality of anchor plates arranged on the outer side face of the framework assembly; the pair of cross-seam curve plates are transversely arranged on the inner side surfaces of the edge beams in a staggered manner; the spring stabilizer is composed of an inner shaft which is arranged in the sleeve and abuts against the spring. The spring stabilizer is transversely arranged between the edge beams and is propped against the edge beams; and the elastic filler is filled in a U-shaped cavity formed by the edge beam and the cross-seam curve plate. F-shaped steel is adopted as the boundary beam, a pouring space is provided for the elastic filler, and the structural performance is safer and more reliable; and meanwhile, the spring stabilizer is supported. The spring stabilizer avoids vertical instability of the edge beam when the spring stabilizer is pressed, and restrains vertical deformation of the elastic filler; the adopted elastic filler is a bio-based composite elastomer material, the raw materials are green and environment-friendly, and the material cost is greatly reduced under the condition that the performance is not influenced by adding the bio-based material. And the elastic filler is used as the joint crossing surface, so that the bearing capacity is enhanced, the driving smoothness is improved, and the driving noise is reduced.

The present invention relates to a low-noise anti-cracking asphalt gravel seal and a construction process, wherein the low-noise anti-cracking asphalt gravel seal comprises an asphalt gravel seal, an asphalt fiber seal and a micro-surface filler from bottom to top. The effect produced by the low-noise anti-cracking asphalt gravel seal of the present invention is that the surface is dense and flat, and the driving noise can be effectively reduced. In addition, the micro-surface filler of waste tire rubber powder can also effectively reduce the noise. The present invention also discloses a construction process, which includes making an asphalt gravel seal, opening traffic / rolling with a rubber-wheel roller, making an asphalt fiber seal, filling an MS-2 type waste tire rubber powder slurry mixture, vacuum absorbing water, and curing. The present invention adopts vacuum water absorption technology, which prolongs the construction season and significantly reduces the dependence on climate factors. Construction can be carried out as long as it does not rain or freeze, and traffic can be opened after construction.

The embodiment of the present application provides a transportation system, including: a transportation pipeline, a track, a platform, an air shaft and a telescopic closed passage; the platform is provided with a platform partition door, which separates the platform into a platform boarding and disembarking area with a vacuum degree of standard atmospheric pressure and a platform track area with a vacuum degree of a first preset value; both ends of the platform track area are respectively connected to the transportation pipeline, and the vacuum degree in the transportation pipeline is a first preset value less than the standard atmospheric pressure; the track is arranged in the transportation pipeline and the platform track area; one end of the telescopic closed passage is connected to the platform partition door, and the other end can be extended to connect with the outer door of the vehicle; a horizontal track plate is arranged in the transportation pipeline, and a track channel is arranged under the track plate. A horizontal sliding closed door is arranged at the joint between the track channel and the track plate; the vacuum degree in the track channel is standard atmospheric pressure. The transportation system provided by the embodiment of the present application can increase the vehicle driving speed and reduce energy consumption.