260 results about "Radial tire" patented technology

The utility model discloses a low-noise high-humidity skiing land radial tire which comprises tire shoulder pattern blocks and central pattern blocks, the tire shoulder pattern blocks and the central pattern blocks are radially arranged on a tire tread, the tire tread adopts a symmetrical design, and the tire shoulder pattern blocks and the central pattern blocks are arranged from outside to inside from the tire shoulder pattern blocks to the central pattern blocks. According to the utility model, by optimizing the shape and the arrangement of the patterns, the noise of the tire is effectively reduced, the noise problem of the snow tire is improved, the risk that the wet and slippery performance of the tire is reduced and the tire slips under the condition that accumulated water is accumulated on a road surface after accumulated snow is melted in the patterns of the snow radial tire in the prior art is solved, and the snow performance is ensured on the basis of ensuring the snow performance.

Provided is a pneumatic radial tire for passenger vehicles in which the cross-sectional width SW of the tire and the outer diameter OD of the tire satisfy a predetermined relationship, and an end of the carcass (an end of a carcass turn-up portion when the carcass has the carcass turn-up portion) in one tire width-direction half that is on the inner side when the tire is mounted on a vehicle is located on the inner side in the tire radial direction than an end of the carcass turn-up portion in the other tire width-direction half that is on the outer side when the tire is mounted on a vehicle.

The invention discloses a method for increasing the sidewall turn-up height in a building process of an all-steel radial tire, which comprises the following steps of: acquiring multi-source data such as temperature, pressure and angle in a turn-up process through an infrared temperature sensor, a pressure sensor and the like; and constructing a multiple linear regression model, a machine learning model and a hybrid model fused with the physical principle, analyzing the relationship between the process parameters and the anti-package height, and performing verification and optimization. According to model output parameters, a servo motor is used for accurately controlling the downward pressing angle and pressure of a reverse wrapping pressing roller, and production is executed in cooperation with an auxiliary supporting ring and a sectional type reverse wrapping technology; meanwhile, the turn-up height is detected in real time through an intelligent monitoring system, and parameters are automatically adjusted when the turn-up height does not reach the standard. According to the method, precise regulation and control of the tire sidewall turn-up height are achieved, compared with a traditional process, the product percent of pass is increased to 95% or above from 85%, the production efficiency is improved by 20%-30%, the tire structure stability is effectively enhanced, the rolling resistance and the tire burst risk are reduced, and intelligent upgrading of tire manufacturing is promoted.

The invention discloses an all-steel radial tire shoulder pad rubber structure and a tire. The width of a pad rubber is 35%-45% of the width of a tread, the thickness of the middle part is 6-8 mm, the thickness of the edge is 2-3 mm, the included angle between the edges of the two sides and the center line of the tread is 15-25 degrees, and three positioning points are arranged. By optimizing the size parameters and the positioning mode of the cushion rubber and matching with the gradual change thickness design and the specific material formula, the deformation of the cushion rubber in the tire forming process is reduced. According to the structure, a transition layer is further arranged between the cushion rubber and the first belted layer, and interlayer combination is enhanced. Compared with a traditional structure, the flatness of the belted layer can be improved, end point shear stress is reduced, tire shoulder faults are reduced, and the durability of the tire is improved.

The invention provides a one-step method small-diameter fitting forming drum for a farm tire and a fitting process of the one-step method small-diameter fitting forming drum. The one-time method small-diameter fitting forming drum for the agricultural tire comprises a main shaft assembly, the middle drum assembly is arranged on the outer side of the main shaft assembly in a sleeving mode and is driven by the main shaft assembly to rotate, and the outer surface of the middle drum assembly can expand and contract; the side drum assembly is arranged on the outer side of the main shaft assembly in a sleeving mode and driven by the main shaft assembly to rotate, the side drum assembly is located on the axial side face of the middle drum assembly, the outer surface of the side drum assembly can axially move and be arranged in an expanding and shrinking mode, and when the side drum assembly axially moves, an avoiding area can be formed by the side drum assembly and the middle drum assembly; when the middle drum assembly and / or the side drum assembly expand / shrink, the flush relation between the outer surface of the middle drum assembly and the outer surface of the side drum assembly can be changed; and the locking ring assembly is located between the middle drum assembly and the side drum assembly, and the locking ring assembly is arranged in an expanding and shrinking mode. The problem that in the prior art, an agricultural radial tire forming machine is low in automation level is solved.

The application discloses a kind of automatic feeding and discharging devices for semi-steel radial protruding white ring tire production, including hollow base, the top of the hollow base is provided with screw lifting assembly, the output structure transmission connection of screw lifting assembly is equipped with support shaft, and the one end of support shaft is equipped with pneumatic clamping component, the bottom of screw lifting assembly is provided with the rotary adjusting mechanism that is sleeved in the inside of hollow base one side.The automatic feeding and discharging device for semi-steel radial protruding white ring tire production, can be in the rotating pre-clamping process of second brake servo motor through first gear, second gear meshing transmission rotating shaft, screw lifting assembly, second brake servo motor makes inverted T type gear shaft linkage engagement two straight toothed plates by synchronous belt, and then by two straight toothed plates through corresponding transmission plate linkage corresponding curved elastic pressure frame plate, is clamped to the center by two curved elastic pressure frame plates synchronous to the multiple tire bodies in stacked state before clamping and maintains clamping effect.

The utility model discloses a radial tire for engineering machinery, which relates to the field of tire design and comprises a tire tread, a linear pattern wall and a U-shaped pattern wall are fixedly mounted on the periphery of the tire tread, a first reinforcing rib is fixedly mounted between the linear pattern wall and the U-shaped pattern wall, and a second reinforcing rib is fixedly mounted between the linear pattern wall and the U-shaped pattern wall. Side pattern walls are fixedly mounted on the periphery of the tire tread and located on the front side and the rear side of the linear pattern wall, shoulder pattern walls are fixedly mounted on the periphery of the tire tread and located on the front side and the rear side of the side pattern walls, and shoulder grooves are formed in the surfaces of the shoulder pattern walls. The height of the first reinforcing ribs is reasonably arranged, the connecting strength between the pattern walls is enhanced, the overall tear resistance is improved, the second reinforcing ribs are matched, the overall rigidity of the tire is remarkably enhanced, the performance of the tire is improved, and the service life of the tire is prolonged.

The invention discloses a civil aviation radial tire corrugated protective layer rubber and a preparation method thereof, and the rubber adopts a technical method that 1 # smoked sheet rubber is used as a main body material, N330 carbon black is used as a reinforcing system, N46 engine oil is used as a plasticizer, insoluble sulfur, an accelerant DZ and the like are used as vulcanizing agents, and an adhesive RS, C9 resin and tackifying resin HT-M are used as an adhesive system. The rubber material with high adhesion, impact resistance, tear resistance, puncture resistance, low heat generation and good fatigue resistance is prepared through a certain mixing process, and the rubber material serving as the corrugated protective layer rubber material of the civil aviation radial tire has good adhesion performance of a framework material (aramid fiber rope), higher physical performance, lower heat generation performance and good anti-fatigue performance. The damage resistance of foreign object puncture resistance and mechanical damage resistance of the civil aviation radial tire is improved, so that the durability of the tire is improved.

The present invention discloses an airtight layer of an engineering radial tire, a production process thereof, and a method for detecting its tear resistance, and relates to the field of tire technology. The technical solution is as follows: (1) the airtight layer comprises the following components in parts by weight: 60-80 parts of brominated butyl rubber, 10-15 parts of natural rubber, 10-15 parts of chlorosulfonated polyethylene, and 55-60 parts of carbon black; (2) the exhaust line groove of the vulcanization bladder is arc-shaped, with a depth h'=1.65-1.8mm, a width W'=7.5-7.8mm, a surface chamfer R1'=3.2-3.5mm, a groove bottom chamfer R2'=1.5-1.8mm, and a groove cross-sectional area of 5.5-6mm. 2 The present invention adjusts the formula design of the tire airtight layer, increases the tear resistance of the airtight layer, improves the size design of the exhaust line of the vulcanizing bladder, can extend the service life of the vulcanizing bladder, and reduce aging and cracking at the groove position of the vulcanizing bladder.

The PET cord for manufacturing a cap ply and the cap ply manufactured using same according to the present invention have low heat shrinkage characteristics and a moderately low modulus even at high temperatures compared to PET having general heat shrinkage characteristics and high-temperature modulus, and exhibits a low modulus in a low elongation range, thereby solving disadvantages in the manufacturing process and providing higher reinforcement than nylon. In addition, the tire according to the present invention in which the bonding relationship between the tread and steel belt layer adjacent to the cap ply is adjusted can overcome the physical limitations that may occur when PET is used as a cord material of the cap ply.

This invention discloses a radial tire with a 0° fiber belt layer and its processing method, relating to the field of tire technology. It includes a steel belt layer, with a 0° fiber belt layer wound around its outer surface. The 0° fiber belt layer is covered by a tire crown, and the steel belt layer encloses a tire carcass. The processing method includes the following steps: S1, raw material conveying: the steel belt layer, the 0° fiber belt layer, and the tire crown are sequentially conveyed to a forming module via a conveying module; S2, steel belt layer forming; S3, 0° fiber belt layer forming; S4, tire crown forming; S5, tire blank transfer and assembly with the tire carcass. The 0° fiber belt layer tightens the steel belt layer, ensuring the radial tire's excellent impact resistance and durability. This allows for accurate alignment of the steel belt layer's oblique joints, ensuring the accuracy of subsequent processing, improving the processing efficiency of the steel belt layer, avoiding stress concentration caused by edge warping, and precisely solving the edge warping problem.

The invention discloses an all-steel load-bearing radial tire and relates to the technical field of radial tires. The present invention optimizes the design of the tire's outer profile section width SW, lower side plate height LSH, and bead positioning line width TTZ. Under the constraints of given technical parameters, the stress deformation of the tire bead area is small. At the same time, in terms of structural design, the carcass cord end point height HSC, the bead chafer outer end point height HWC.O, the bead chafer inner end point height HWC.I, the hard apex rubber upper end point height HHBF, the bead area integral reinforcement layer arranged between the carcass cord, apex rubber and steel ring, and the bead chafer inner reinforcement layer arranged between the carcass cord and the bead chafer inner end point are optimized, and new requirements are set for the strength of the reinforcement layer and the strength and modulus of the cord covering rubber. In terms of formula materials, the deformation and modulus matching of soft and hard apex rubbers are also deeply explored and verified, so that the stress deformation of the entire bead area is reduced, thereby reducing early cracks at the carcass cord end point, the bead chafer outer / inner end point, the hard apex rubber upper end point, and the widest position of the steel ring, effectively extending the service life of the tire.

The application provides a kind of tire cornering stiffness calculation device, method and computer terminal, specifically relates to automobile tire stiffness calculation method technical field.The method comprises: the tire is radial tire, the calculation method comprises: obtaining the geometric parameters, material parameters and construction parameters of the tire;According to the geometric parameters and the material parameters, the pattern stiffness of the tire and the crown stiffness of the tire are calculated;According to the construction parameters of the tire, the cornering stiffness correction coefficient of the tire is calculated;According to the pattern stiffness of the tire, the crown stiffness and the cornering stiffness correction coefficient of the tire, and the cornering stiffness function obtained by pre-simulation, the cornering stiffness of the tire is calculated.Through the calculation method provided by the application, the accuracy of tire cornering stiffness can be improved, and reliable data guarantee is provided for vehicle control.

The invention discloses a method for measuring the bending amount of a carcass cord of an all-steel radial tire, which comprises the following steps of: cutting the tire into a flat section, and establishing a global coordinate reference; removing the lining layer to obtain a complete carcass cord, connecting the mark points on the front and back surfaces to form a measurement datum line, and establishing a space coordinate system; accurately mapping the three-dimensional cord thread form into a two-dimensional plane rubbing graph, and generating a standardized measurement data source through transfer fixation; based on the plane rubbing graph, the bending amount of the tire body cord thread is obtained through geometric modeling and trigonometric function calculation, then the bending degree is calculated, and the bending degree is converted into lossless quantitative analysis and engineering parameter output of cord thread deformation. According to the method, the measurement of the bending amount and the bending degree of the tire body cord thread is realized by combining geometric modeling and trigonometric function calculation through standardized section cutting, symmetric marking, inner lining layer lossless stripping and carbon powder plane rubbing technologies, and quantitative data support is provided.

The utility model discloses a tire bead structure of an all-steel radial tire, which belongs to the field of tire structures and comprises a sidewall rubber area, a wear-resistant rubber area, a steel wire wrapping cloth area, a reinforced steel wire wrapping cloth area, an isolation rubber area, a tire body steel cord area, a steel wire ring area, a lower apex area, a lining layer area and an upper apex area. A layer of reinforced steel wire wrapping cloth is additionally arranged between the steel wire wrapping cloth area and the tire body steel cord area, and the height values of all end points of the steel wire wrapping cloth area, the reinforced steel wire wrapping cloth area, the tire body steel cord area, the upper apex area and the lower apex area are configured in a staggered difference level mode, so that the stress concentration problem of all component materials can be solved; wherein the end point of the inner side of the reinforced steel wire wrapping cloth area is located in the center of the bottom of the steel wire ring area, the purpose of reinforcing the tire bead can be achieved, stretching from the tire sidewall to the tire bead part can be reduced, and the risk that the tire sidewall cracks is reduced.

The utility model relates to a tire technical field especially having a noise reduction function's all steel radial tire, including the carcass ply, the outer wall edge of carcass ply is provided with the bead wire, the connecting portion of carcass ply and bead wire is provided with the triangle gum, the inside of carcass ply is provided with the reinforced meridian, the outer wall suture of reinforced meridian has the connecting fiber, the inner wall of carcass ply has the airtight layer, the outer wall of carcass ply has the belt layer. The utility model is provided with two groups of staggered distribution's sipe pattern, and the asymmetric sipe pattern can reduce the noise when tire rolls, realizes the noise reduction operation of tire, through setting up sipe pattern and pattern groove perpendicular, it is convenient for the water to be discharged fast, improves the drainage performance of tire, through setting up six groups of connecting fiber, it is favorable to improve the connecting strength of reinforced meridian, avoids the deflection of reinforced meridian.

This invention relates to a cut-resistant, low-heat-generating all-steel radial engineering tire tread compound formulation and its preparation method, comprising: 70-80 parts natural rubber, 30-50 parts styrene-butadiene rubber, 20-40 parts carbon black, 10-15 parts silica, 2-3 parts silane coupling agent, 2-3 parts stearic acid, 3-4.5 parts zinc oxide, 3-5 parts antioxidant system, 1-2 parts dispersant, 1-4 parts sulfur, 1-4 parts accelerator, and 0.1-0.4 parts scorching inhibitor; the raw rubber of this invention... The system primarily uses natural rubber, which is high in strength and low in heat generation. It also incorporates solution-polymerized styrene-butadiene rubber (SBR) to overcome the high heat generation disadvantage of traditional emulsion-polymerized SBR. Furthermore, it utilizes a wet mixing technique involving carbon nanotubes and nano-carbon black in solution-polymerized SBR to resolve dispersion issues related to reinforcing fillers and carbon nanotubes. This results in a high proportion of binder, high strength, low heat generation, and outstanding abrasion resistance. Simultaneously, it also gives the formulation excellent cut and puncture resistance, effectively overcoming the issues of prominent shoulder and crown aortic ...

The invention relates to the technical field of vehicle tire test data analysis, in particular to a radial tire rubber-coated steel wire ring interlayer bonding strength test method which comprises the steps that a load data sequence and a displacement data sequence are collected through test equipment, wavelet transform filtering is applied to remove noise, and zero drift correction is carried out to obtain a smooth curve; calculating a linear regression determination coefficient and a slope standard deviation by adopting sliding window scanning to identify a feature interval; the maximum load value and the area under the curve are extracted from the feature interval to calculate the interlayer bonding strength value; effectiveness judgment and parameter adaptive adjustment are realized through material standard threshold comparison and variable coefficient analysis; and finally, automatically generating a test report for marking the feature interval. According to the invention, the defects of low manual operation efficiency, poor precision and insufficient consistency are overcome, and full-process automatic testing is realized.

The application discloses a radial tire forming modular production line, which comprises a forming drum device, a tire body forming system and a tread forming system; the forming drum device comprises a forming drum base, a forming drum machine box, a belt drum machine box and a combined forming device, the forming drum machine box and the belt drum machine box are respectively arranged on the front and rear sides of the forming drum base, the tire body forming system synthesizes a tire body semi-product on the forming drum, the tread forming system synthesizes a tread semi-product after the belt drum, and the forming drum machine box and the belt drum machine box transport the tire body semi-product and the tread semi-product to the combined forming device for rolling and forming. The application utilizes the mathematical differential principle to standardize the minimum units of each part of the tire, and then utilizes the mathematical integral principle to utilize the standardized minimum units to perform superposition according to the shapes of the parts by using an algorithm, and finally produces a tire embryo. The scheme can improve the production efficiency, reduce the production cost and has a wide application prospect.

The invention discloses a novel high-performance truck tire bead structure, and relates to the technical field of tires, the novel high-performance truck tire bead structure comprises an outer seam allowance nylon wrapping cloth, a tire body cord fabric layer, a soft rubber core and a tire body, the outer seam allowance nylon wrapping cloth, the tire body cord fabric layer and the soft rubber core are all arranged in the tire body, and a hard rubber core is arranged at the position, corresponding to the soft rubber core, in the tire body. The inner side of the tire body cord fabric layer is wrapped with a steel wire ring, the outer side of the tire body cord fabric layer is wrapped with a steel wire cord fabric reinforcing layer, inner seam allowance nylon wrapping cloth is arranged between the tire body cord fabric layer and the soft rubber core, and a filling mechanism is arranged on the inner side of the tire body. The nylon reinforcing structures are additionally arranged on the two sides of the tire body turn-up endpoint, the two-way binding force of the tire body endpoint of the all-steel radial tire is increased, a better buffer area is formed between the steel wire and rubber in the endpoint area, tire body endpoint deformation and stress concentration are reduced, the tearing and disengaging risk between the rubber material and the steel wire is reduced, and the service life of the tire body is prolonged. And the control performance is better while the bearing resistance is higher.

In this invention, a device has been designed to accurately measure the circumference and weight of a radial tire bead. The goal of this innovation is to increase the accuracy, speed, and efficiency of the quality control process for tires produced in the country's tire manufacturing industry. The main problem with traditional methods, which are performed using templates and traditional scales, is low accuracy, operator dependency, and high error rates. The device is designed using digital image processing technology, which includes a Raspberry Pi camera and the SimpleBlobDetector algorithm in the OpenCV library, to calculate the diameter of the bead with an error of less than 1%. Also, using four load cell sensors equipped with the HX711 module, the weight of the bead is measured with high accuracy (error of 0.35% to 3.18%). The data is processed by the Raspberry Pi minicomputer and the results are displayed instantly on the LCD touch screen. This integrated system increases production efficiency by automating the measurement process and using cost-effective components, making it ideal for tire production lines and quality control laboratories.

The invention relates to the technical field of tire manufacturing, and particularly discloses a method for controlling rubber edge impurities of an all-steel-wire radial tire, the method for controlling the rubber edge impurities of the all-steel-wire radial tire is avoided from the design end of a production mold, and the method for controlling the rubber edge impurities of the all-steel-wire radial tire comprises the following steps: firstly, setting the width of a tread, and according to the set width of the tread, controlling the rubber edge impurities of the all-steel-wire radial tire; calculating the width of a belted layer of the tire, and calculating the width of a tire blank parting line according to the width of the belted layer; if not, the width of a mold parting line is set according to the width of the tire blank parting line; then, the height of a mold parting line is designed, whether the height of the mold parting line is reasonable or not is judged, if yes, a tire production mold is designed according to the set width of the mold parting line and the set height of the mold parting line, and by means of the method, generation of rubber edge impurities can be avoided from the design end of the production mold; the problems that in the prior art, rubber edges are prone to occurring in tire production, so that the production efficiency is low, and the cost is high are solved.

The invention discloses a low-heat-generation high-modulus semi-steel radial tire body rubber material composition and a preparation method thereof. The low-heat-generation high-modulus semisteel radial tire body rubber composition is prepared from the following raw materials in parts by weight: 80-100 parts of natural rubber, 30-50 parts of carbon black N326, 15-30 parts of carbon black N550, 1-5 parts of aromatic oil, 1-2 parts of stearic acid, 3-8 parts of indirect method zinc oxide, 1-5 parts of a low-heat-generation auxiliary agent, 1-2 parts of a modulus reinforcing agent, 1-3 parts of resorcinol formaldehyde resin, 1-3 parts of an anti-aging agent and 4-6 parts of insoluble sulfur. 1-2 parts of an accelerant and 2-3 parts of an adhesive RA-65. According to the semi-steel radial tire body rubber composition, formula materials are optimized, a proper amount of carbon black N326, carbon black N550, resorcinol formaldehyde resin, insoluble sulfur and the adhesive RA-65 are added on the basis of natural rubber, and the low-heat-generation auxiliary and the modulus enhancer are added for mutual coordination, so that the heat generation of the rubber is remarkably reduced, and meanwhile, the rubber composition has the advantages that the heat generation rate is increased, and the service life of the rubber composition is prolonged. And the high modulus of the rubber material can be maintained.

The invention belongs to the technical field of rubber, and discloses an aviation radial tire cap strip adhesive and a preparation method of the aviation radial tire cap strip adhesive. The preparation method comprises the following steps: mixing fast extruding furnace black, high-dispersion white carbon black, a white carbon black dispersing agent, a silane coupling agent, an adhesive, a heat stabilizer, a heat-conducting reinforcing agent and an anti-reversion agent in specific parts by weight, preparing a rubber compound through processes of mixing by an internal mixer, filtering by a filter and the like, preparing the rubber compound into a rubber material semi-finished product in a manner of extruding by an extruder, and packaging the rubber material semi-finished product. The device is used for extruding cap strips. The cap strip adhesive prepared by the invention is low in heat generation, high in tear strength, high in adhesive strength and good in thermal stability, and is more suitable for the requirements of new models on high speed and high load of tires. The rubber material is low in shrinkage rate, good in bonding performance and high in rubber material performance retention rate in the using process, the using safety of the tire is improved, and the service life of the tire is prolonged.

The invention provides a production process of apex for a high-load-resistance all-steel radial tire, and belongs to the technical field of apex for tires. The production process comprises the steps of preparing a sizing material additive and mixing, the step of preparing the sizing material additive comprises the steps of preparing maleic anhydride sodium lignin sulfonate and compounding; the preparation method of the maleic anhydride sodium lignin sulfonate comprises the following steps: heating N, N-dimethylformamide to 60-65 DEG C, adding activated sodium lignin sulfonate, stirring at 78-82 DEG C for 30-40 minutes, heating to 92-97 DEG C, adding 4-dimethylaminopyridine and maleic anhydride, and stirring at 105-110 DEG C for 3.0-4.0 hours to obtain the maleic anhydride sodium lignin sulfonate. The apex obtained by adopting the production process disclosed by the invention is high in hardness and strength, strong in load resistance and excellent in high-temperature-resistant chemical performance.

The invention discloses an all-steel radial tire using double-layer seam allowance and double-layer welt composite parts to reinforce a tire bead and a preparation method of the all-steel radial tire, a first nylon welt composite part and a second nylon welt composite part are arranged at the inner end point and the outer end point of a steel wire seam allowance reinforcing layer of the tire, and a buffer seam allowance layer and a seam allowance reinforcing layer are additionally arranged at the inner end point of the steel wire seam allowance reinforcing layer; the first nylon welt composite part, the second nylon welt composite part, the buffer seam allowance layer and the seam allowance reinforcing layer are arranged in a misalignment manner; by improving the structure of the nylon auxiliary layer and adopting the misalignment design of the double-layer nylon composite part, the stress concentration of the tire is effectively prevented, the high load resistance strength of the tire bead is enhanced, the durability of the tire bead is improved, the durability of the tire bead under the heavy load condition is improved, the service life of the tire bead under the heavy load condition is prolonged, and the problem that the heavy load tire bead is large in deformation and poor in durability is solved. The problem that cord thread turn-up endpoints of a heavy-duty tire bead part are damaged and the seam allowance part is exploded due to damage of the inner endpoints of the seam allowance is solved.

The application relates to a high-strength tempered bead wire production device for radial tires, which comprises a water tank, the top of the water tank is open, clean water, a heater and a water removal mechanism are arranged in the water tank, and the heater and the water removal mechanism are arranged left and right; the water removal mechanism comprises a fixed pipe, the fixed pipe is located above the clean water, the fixed pipe is parallel to the front and back directions, the rear end of the fixed pipe is sealingly and fixedly arranged on the inner wall of the rear side of the water tank, a rotating roller is coaxially arranged in the fixed pipe, and the two ends of the rotating roller are rotationally connected with the fixed pipe; rotating shafts are coaxially and fixedly arranged at the two ends of the rotating roller, first bearings are arranged on the two rotating shafts, and the outer rings of the first bearings are fixedly connected with the fixed pipe; a fan blade is arranged on the rotating shaft located at the front side of the rotating roller and located in the fixed pipe. The water removal mechanism can remove the water on the steel wire, so that the water droplets on the steel wire can be avoided, and water resources can be saved.

The utility model discloses a high-rubber-permeation compact type steel cord and a tire, which comprise a core steel wire formed by weaving and twisting two or three monofilaments with the diameter of d1, and 15 steel layer wires are twisted on the periphery of the core steel wire; the layer filaments comprise middle layer filaments and outer layer filaments, the middle layer filaments are composed of five monofilaments with the diameter of d2, the outer layer filaments are composed of ten monofilaments with the diameter of d3, and d2 is larger than d1 and smaller than d3; the outer-layer filaments have two diameters, namely, five outer-layer filaments are d3-1, and five outer-layer filaments are d3-2; and the d3-1 and the d3-2 of the outer-layer filaments are alternately distributed. Compared with the prior art, the rubber permeation rate of the steel cord can be effectively improved, the corrosion resistance is better, the safety of the tire is higher, and the steel cord can be widely applied to carcass plies of radial tires of medium-sized and heavy trucks and passenger cars.

The invention relates to a radial tyre for a civil engineering vehicle, the crown of which comprises two working layers (321, 322) and at least one protective layer. Each crown layer comprises elastic metal reinforcing elements, the protective layer having reinforcing elements that are 30% more elastic than those of the working layers. The crown is characterised by the thickness (ETE) at the shoulder and the thickness (ETM) at the centre of the tread. The crown thus described is optimal in terms of endurance and wear performance balance with an ETE / ETM ratio at most equal to 1.25. The point Me2 on the carcass layer located at a distance of 0.85 times L4m, the distance from the point farthest from the median plane, is a radial distance E85 from the point of intersection of the median plane and of the carcass layer. The ratio of E85 to 0.85*L4m is between 0.10 and 0.15.

The utility model relates to an engineering radial tire blank hoisting tool, and belongs to the field of tools for tire production. A crane hook suspension ring is arranged and fixed to the upper end of a hoisting connecting rod, the hoisting connecting rod is inclined, the lower end of the hoisting connecting rod and the upper ends of two tire blank suspension connecting rods are fixed together, and the lower ends of the two tire blank suspension connecting rods are fixed to the two sides of the end of a hoisting tire blank suspension hook respectively. And the upper side surface of the tire blank hoisting hanging hook is an arc-shaped surface. According to the utility model, the tire blank is convenient to transport in the tire drying room, the potential safety hazard when the tire blank enters and exits from the tire drying room can be eliminated, the tire blank can be protected from being damaged in the tire blank hoisting process, the labor intensity of operators is reduced, the working efficiency is improved, and the quality of the tire blank in the hoisting process can be ensured.