125results about How to "No slip" patented technology

The invention relates to a technical method used for extruding-bending-integral forming of a magnesium alloy sectional material, pertaining to the technical field of plasticity processing. A set of three-wheel roll bending device is arranged near a discharge port of the original horizontal extruding machine, magnesium alloy ingot blanks are molded into the sectional material through hot extrusion, the sectional material is put into the roll bending mechanism directly before being cooled, bending moment is carried out to the sectional materials by the three roll wheels that are arranged on a same surface so as to achieve bending and molding, and the movement and position of the roll wheels are controlled to gain a bending angle and a bending radius that are required. The invention can realize the extrusion, bending and continuous molding of the magnesium alloy sectional material under the condition of only heating original ingot blanks, thereby having high production efficiency and low cost.

In a guide apparatus having an ultrasonic motor as a driving source of a stage, it is intended to accurately comprehend a degree of abrasion between a friction member of a frictionally driven ultrasonic motor and a drive transmitting member of the stage. A guide apparatus is constructed by an ultrasonic motor, a stage capable of moving on the basis of a friction driving with the ultrasonic motor, a position detecting means for detecting a position of the stage, a driving control portion for outputting a driving command signal to the ultrasonic motor, a non-contact type measuring means for measuring a position information of a friction member in the ultrasonic motor, a slip distance measuring portion for calculating a slip distance of the friction member in the ultrasonic motor, and a monitoring portion 1 equipped with tangential force measuring portion for calculating a tangential force applied to a driving surface of the drive transmitting member in the stage on the basis of the friction driving with the ultrasonic motor.

A modular PE pipe water activity platform comprises a PE pipe floating body, single-section floating raft platforms and a floating raft guardrail, wherein the PE pipe floating body is formed by connecting a plurality of hollow PE pipes of which both ends are sealed; each single-section floating raft platform is of a reinforced concrete structure; the single-section floating raft platforms and the PE pipe floating body are connected into a whole by a fixing frame; plurality of the single-section floating raft platforms are fixedly connected into a floating raft platform assembly; and the floating raft guardrail is fixedly installed on the floating raft platform assembly. According to the invention, the characteristics of light weight, corrosion resistance, long service life, capability of being recycled and high strength of reinforced concrete of the PE pipe are fully combined, manufacturing and construction are simple, safety and reliability are realized, and maintenance is simple. Due to the adoption of modular production and flexible assembly, the water-surface construction operation difficulty of a large platform is greatly reduced, the construction cycle is shortened, and economic benefits and environmental benefits are greatly enhanced.

The antiskid polyurethane paint is prepared with tolylene diisocyanate, polyether N210, trihydroxymethyl propane, butyl acetate, acetone, dibutyltin dilaurate, benzoyl chloride, antioxidant, 1,2-propylene glycol and water absorbent, and through dewatering butyl acetate, acetone and polyether N210 in reactor at 90-100 deg.c; adding trihydroxymethyl propane into the reactor before heating and stirring to dewater; adding benzoyl chloride, antioxidant and tolylene diisocyanate, heating and adding dibutyltin dilauratel; reflux evaporating solvent butyl acetate or acetone; packing the prepolymer into paint tank; and mixing prepolymer, xylene or butyl acetate or acetone, 1,2-propylene glycol and water absorbent in certain proportion to obtain the paint. The paint has simple preparation process,strong adhesive force, high wear resistance, high weather resistance and other advantages.

The invention discloses a cable bending displacement measuring device which comprises a lateral measuring ruler and an offset measuring unit. Supporting portions are arranged at the two ends of the measuring ruler. The offset measuring unit includes a measuring rod, a sliding seat in sliding connection with the measuring ruler horizontally, and a sliding cylinder fixed on the sliding seat vertically. A sliding block in sliding connection with the sliding cylinder is fixed at one end of the measuring rod and the other end of the measuring rod extends out of the sliding cylinder. A lateral displacement sensor is arranged at the sliding seat and a bending displacement sensor is arranged at the sliding block. During measurement, the measuring ruler is in close contact with a to-be-measured cable by the supporting portions; the offset measuring unit slides from one end of the measuring ruler to the other end and the outer end portion of the measuring rod is kept to be abutted against the outer surface of the to-be-measured cable during the sliding process; the lateral displacement sensor measures the lateral move displacement amount of the sliding seat in real time and the bending displacement sensor measures the bending displacement amount of the cable in real time during the sliding process; and the measurement data are displayed in real time by a display panel. The measurement becomes simple and convenient and the accuracy is high.

The invention discloses a test device and method for researching friction characteristics between a tire and an actual pavement, and belongs to the technical field of detecting equipment. Actual working conditions of the tire with load running on different pavements are well simulated through mechanical structures such as a loading sleeve, a loading sleeve base, a rotary arm and a rack, the test device and method for researching friction characteristics between the tire and the actual pavement can be used for testing a friction factor between the tire and the pavement and researching wear pattern between the tire and the pavement, compression amount of a loading spring can be adjusted through a loading screw according to requirements, and thus a test load is adjusted; meanwhile tire running speed is adjusted through a transmission system; changing is conducted on a slip rotary rate or a slip shift rate between the tire and a pavement through adjusting a connected relation between a tested wheel and an auxiliary wheel, multiple kinds of running conditions of the tire on the pavement are simulated, data such as the load, a rotate speed and a torque are detected in real time through asensor, and thus the friction factor between the tested tire and the tested pavement is obtained by formula calculation.

The invention belongs to the field of mechanical stepless transmission and includes a harmonic gear-driving stepless transmission, which is composed of a driving shaft, a driven shaft, a rigid gear, a flexible gear, a wave generator and a roller; the flexible gear can make axial movement relative to the rigid gear, the teeth of the flexible gear are composite teeth, which are composed of two branch teeth. When the flexible gear makes axial movement relative to the rigid gear, the angle between the two branch teeth of the composite teeth and the tooth thickness are variable, when the rigid gear keeps stationary and the driving shaft actuates the wave generator to rotate, the wave generator forces the flexible gear to generate continuous elastic deformation by the roller, and the tooth thickness of the composite teeth of the flexible gear also changes with the deformation of the flexible gear; because the tooth thickness or the width between the teeth keeps variable when the teeth number of the rigid gear is fixed, although the teeth number ratio of the flexible gear and the rigid gear keeps unchanged, the arc length passing the nodal circle is variable, and the stepless transmission can be realized so long as the flexible gear makes axial movement relative to the rigid gear.

The invention discloses a tail rudder of an underwater vehicle, which comprises a housing, a steering gear, a steering gear mounting plate, a tail wing plate, a steering gear plate shaft, a steering gear plate, a bevel gear and a steering gear shaft. Three steering gear lug plates and three rudder shaft lug plates are uniformly arranged at equal distances in the housing; three rudder platforms arearranged on the outside, and rudder shaft lug plates are arranged on the inside of the rudder platforms; the steering mounting plate is screwed on the steering gear lug plate, and three groups of steering gears are arranged on the steering gear mounting plate; at that out end of the rudder platform and the steering gear plate bevel gear, a flap rudder is arranged; and at the outer end of the rudder platform and the rudder plate bevel gear, a flap rudder is arranged. The steering gear bevel gear and the rudder plate bevel gear are mutually meshed and driven. The invention adopts a three-axis rudder tail rudder arrangement mode, which saves cost and improves system reliability. The control model is simplified and the control difficulty is reduced; it has compact structure and high stability. The rudder plate adopts the flap structure to improve the rudder efficiency and the attitude control ability of the underwater vehicle. The electromagnetic interference is reduced, the stress structure of the rudder shaft is improved, the damage probability of the rudder shaft caused by the trailer is reduced, and the safety of the rudder shaft is improved.

The invention discloses a thick-painted cement-based waterproof coating, which consists of liquid materials and powder materials, wherein the liquid materials and the powder materials are made from raw materials with parts by weight: the liquid materials comprise high polymer emulsion 80%-90%, water 10%-20% and auxiliaries 3%-10%, the powder materials comprise cement 30%-50%, graded sands 20%-40%, glass beads 10%-30%, precipitated barium sulphate 10%-30% and auxiliaries 3%-10%. The thick-painted cement-based waterproof coating can achieve a thickness which is required by standard construction through once thick-painted construction in the non-cracking condition, saves time and labor, and greatly saves cost for building construction. Experimental results show, the thick-painted cement-based waterproof coating uses roll coating, brush coating and roll coating modes to construct, can achieve 1.5mm-2.0mm construction thickness, can achieve above 3.5MPa bonding strength, can achieve above 250% elongation at break, and does not have unhealthy phenomena of cracking, sagging and slipping and the like.

The invention belongs to marine engineering machinery, and relates to a traction type reciprocator for a single point mooring liquid slip ring test. The traction type reciprocator is characterized in that a hydraulic cylinder is arranged on a mounting platform; a cylinder piston A at one end of the hydraulic cylinder drives a traction pulley block A consisting of a pulley J, a pulley I, a pulley H, a pulley G, a pulley F, a pulley E, a pulley C and a pulley D through a steel wire rope; and a cylinder piston B at the other end of the hydraulic cylinder drives a traction pulley block B consisting of a pulley K, a pulley L, a pulley M, a pulley N, a pulley A and a pulley B through a steel wire rope, the pulley K and the pulley L are arranged on a support H, the pulley M and the pulley N are arranged on the support G, the pulley A is arranged on the support A, and the pulley B is arranged on the support B. The traction type reciprocator is reasonable in design and simple in structure; even if the rope of the pulley block on one side of the cylinder is stored, the rope of the pulley block on the other side of the cylinder is released, and then a reciprocating function of the reciprocator is realized; and moreover, the traction type reciprocator is easy to manufacture and maintain, low in failure rate, low in manufacturing cost, quite convenient to operate and use, simple, practical, safe and reliable, and the steel wire ropes are anti-slip.

The invention discloses a charging pile system of a new energy vehicle. The charging pile system comprises a charging pile body, wherein a parking region is arranged on a ground position in front of the charging pile body; four rectangular foundation pits are formed in the parking region; the positions of the four foundation pits correspond to those of four wheels of the new energy vehicle; a wheel assisting mechanism is arranged in each foundation pit, and the wheel assisting mechanism is used for bearing and moving the wheel, which is on the position of the wheel assisting mechanism, of the new energy vehicle, and the wheel assisting mechanism is controlled to start and stop by a PLC of the charging pile body. According to the charging pile system disclosed by the invention, the wheel assisting mechanisms for bearing and moving the four wheels of the new energy vehicle are separately arranged on the parking region, so that the problems that other new energy vehicles needing charging cannot be charged as the parking region is occupied, and the charging pile cannot be effectively used are radically solved.

The invention discloses a full-automatic production device for an expanded perlite heat preserving board and relates to the field of heat preserving board production devices. The full-automatic production device for the expanded perlite heat preserving board is used for overcoming the defects that in the process of producing the expanded perlite heat preserving board, cost is high, efficiency is low, consumed time is long and assembly line production cannot be achieved. The full-automatic production device for the expanded perlite heat preserving board comprises a material mixing device, a board pressing device, a drying device and a packaging platform; the material mixing device is used for conveying materials to the board pressing device after the materials are mixed uniformly; the boardpressing device is used for pressing the mixed materials into the heat preserving board; the drying device is used for drying the heat preserving board; and then the dried heat preserving board enters the packaging platform to be packaged. The full-automatic production device for the expanded perlite heat preserving board is used for assembly line production of the expanded perlite heat preserving board.

The invention discloses a half-thread glue injection type connecting sleeve design method, a half-thread glue injection type steel bar connecting sleeve, and a mounting method thereof. The half-thread glue injection type connecting sleeve is formed by combining a steel sleeve, two steel bars with threads at the ends, and an adhesive. One end of the inner surface of the steel sleeve and the outer surfaces of the ends of the corresponding reinforcing steel bars are machined into threads which are in weak engagement. After the steel sleeve is screwed with the two reinforcing steel bars, internal gaps between the steel sleeve and the reinforcing steel bars are filled with the adhesive, and the two reinforcing steel bars are connected into a whole after the adhesive is cured. Thread pitch of the weak occlusion threads is long, and thread teeth are narrow, so that the steel sleeve can connect two steel bars at any interval, and the other ends of the weak occlusion threads are in weak occlusion connection. After the gaps between the steel sleeve and the weakly-engaged reinforcing steel bars are filled with the adhesive, the strong connection between the two reinforcing steel bars by the connecting sleeve can be realized; and the required connecting strength index can be met by adjusting the length of a connecting thread section between the steel sleeve and the weakly-engaged steel bars.

The invention discloses a method for preventing flotation of a light solid composite core formwork of a composite floor system. The method comprises the following construction steps that firstly, an inner formwork arrangement diagram is drawn before an inner formwork is constructed, and the number of required accessories is determined according to the inner formwork arrangement diagram; secondly, anti-flotation accessories of the core formwork are manufactured; thirdly, the core formwork of the composite floor system is installed and constructed; fourthly, concrete pouring of the composite floor system is conducted; and fifthly, after concrete is poured and cured, nuts, a batten, clamps of three types and a bottom formwork of the floor system are dismantled, the exposed portions of screws are cut off, and the flatness of the bottom of the floor system is guaranteed. According to the method for preventing flotation of the light solid composite core formwork of the composite floor system, the effect that a core formwork box does not float upwards or slide is guaranteed; in addition, the construction technique is simple, and the accessories are convenient to manufacture and install; furthermore, the practicability is high, and manufacturing and machining are convenient; and moreover, the cost is low, and the control effect is remarkable.

The invention discloses a fracturing type rock tensile strength test apparatus and method. A test object is a cylindrical soil or soft rock test sample. The fracturing type rock tensile strength testapparatus comprises a mechanical structure and a control apparatus; the test sample is installed between a passive fracturing rod and an initiative fracturing rod which are vertically arranged, and the test sample is centered by virtue of an adjusting centering frame and fit to the passive fracturing rod; the initiative fracturing rod is propelled along a horizontal direction so as to fracture thetest sample; the propelling rate of the initiative fracturing rod is controlled by a rate controller of the control apparatus; a data acquisition module acquires and stores the pressure and displacement data and display the data on a display screen in a graphic manner in real time; and after the test is ended, a data analysis module calculates a tensile strength value. The fracturing type rock tensile strength test apparatus is light and compact in structure; the test needs no additional component, and the system error is small; the test sample is convenient to install, the operation is simple, and the test efficiency is high; and the test sample is vertically arranged and is firm without slippage, the test sample position is stipulated by adopting the centering frame, the generation of deviatoric stress is avoided, the uniformity of the test sample destruction effect is ensured, and the test result is accurate and reliable.

The invention discloses a fertilizer distributing mechanism. The fertilizer distributing mechanism comprises a feeding device anda rotary dripping mechanism, and further comprises a base plate, the feeding device comprises a material storage box, a mixing motor, a mixingimpeller, a feed delivery pipe and a material rotating plate, a material falling hole is formed in the edge of the bottom of theinner side of the material storage box, the material falling hole is connected with the cone-shaped feed delivery pipe, a passing hole is formed in the base plate, and the feed delivery pipe penetrates through the passing hole and communicates with a counterbore formed in the upper surface of the material rotating plate; the center of the material rotating plate is a round hole, and ring-shaped grooves are formed in the inner sidethe round hole and communicates with the counterbore; and the rotary dripping mechanism comprises a fertilizer throwing barrel, a synchronous belt, a fertilizer throwing driving motor, a fixed rod and a bearing, the fixed rod is located in the center of the center round hole of the material rotating plate, the fertilizer throwing barrel is located between the fixed rod and the material rotating plate and is rotatably connected with the fixed rod through the bearing, and a material falling hole duct communicates with a discharging pipe and the ring-shaped grooves. According to the fertilizer distributing mechanism, a totally enclosed type is adopted in delivery and dripping offertilizer, and the dripping velocity is controllable.

A rubber concave-convex inner tooth guiding type synchronous polyester conveying belt comprises upper covering rubber, a framework layer and lower covering rubber which are attached to one another in sequence. The rubber concave-convex inner tooth guiding type synchronous polyester conveying belt is characterized in that concave-convex inner tooth guiding bars are evenly distributed on the outer side of the lower covering rubber in the horizontal direction; the length of each concave-convex inner tooth guiding bar is the same as the width of a conveying belt body; the section of each concave-convex inner tooth guiding bar is in an isosceles trapezoid shape, and the wide bottom face of each concave-convex inner tooth guiding bar and the lower covering rubber are combined. The rubber concave-convex inner tooth guiding type synchronous polyester conveying belt has the advantages that a special metal mold is used for vulcanization, the concave-convex inner tooth guiding bars and the conveying belt body are integrally formed and vulcanized in one time, the problem that the concave-convex inner tooth guiding bars and the lower covering rubber are not firmly bonded due to secondary vulcanization is avoided, the concave-convex inner tooth guiding bars are firm and durable, precise power transmission can be guaranteed, meshing is tight, slipping is avoided, transmission efficiency is high, operation is stable, reliability is good, vibration is low, noise is low, bending rigidity is low, transmission resistance can be reduced, energy saving is facilitated, and fatigue life is greatly prolonged.

The invention relates to a permanent bamboo-based composite bearing plate. The permanent bamboo-based composite bearing plate comprises assembly bamboo canes, fiber gridding cloth and a cementing material, wherein the assembly bamboo canes are formed by longitudinally cutting bamboos, the bamboo canes are vertically placed during assembly, and first gaps are formed between the adjacent bamboo canes at intervals; the fiber gridding cloth is attached to the upper surfaces and the lower surfaces of the assembly bamboo canes and completely wraps the side surfaces and the end surfaces of the assembly bamboo canes from the peripheries; the cementing material is poured into the first gaps, as well as the upper surface and the lower surface of the outer side and the peripheral side surface of thefiber gridding cloth, the cementing material in the first gaps forms thin-wall connecting supporting ribs, and the cementing material on the upper surface and the lower surface of the outer side and the peripheral side surface of the fiber gridding cloth forms a bearing protection bonding layer. The permanent bamboo-based composite bearing plate not only can give consideration to bearing strength,but also can realize the advantages of energy conservation, environmental protection, safety, low consumption, high temperature resistance, low temperature resistance, wear resistance, corrosion resistance, seepage resistance and high fire resistance.