87results about How to "Fast turning speed" patented technology

The invention discloses a method for sectional turning the ship and special rolling bracket, comprising: (1) each side edge of one end of section has one arc rolling bracket while its axis is parallel to the sectional turning surface; (2) the invention uses the crane to hang the another end of section to turn the section for 180 degrees along the arc surface of rolling bracket to complete the sectional turning. The inventive special rolling bracket has a round arc surface and a connection plate arranged on the chord of round arc and connected to the section via connection hole. Compared to present technique, the invention can fully utilize the lifting ability of crane while the section weight can be two times of the section weight turned by two crane; since the section is large, the number of sections is fewer, the closing quality of ship is confirmed, and the period of building ship can be shorted; since the section is turned by the support of rolling bracket, it has better support condition, reliable safety, simple operation, and fast turning speed.

The invention provides a gob-side entry retaining adjoining rock stabilizing method based on lateral rock formation pre-splitting control. The stabilizing method is used for pre-splitting an upper roof above the gob-side entry retaining. The method comprises the steps as follows: constructing a drill site in a roadway stoping lateral coal wall; stoping a lateral top plate in the drill site; constructing two groups of six advanced pre-splitting blasting holes which take the shape of a small horizontal rotational angle in the trending direction of the roadway; loading the explosive for blasting in the position which is 10 to 40 meters to an advanced working surface. According the method provided by the invention, a top cover rock formation can be pre-split, the fracture of the top cover rock formation in an assigned position outside a wall body is guaranteed, and the contact of the turning submerged upper roof to the gob-side entry retaining adjoining rock is separated, so that the bearing pressure of the gob-side entry retaining adjoining rock is reduced, and the action time of the mining-induced stress is shortened; the method has the effects of simple operation, high efficiency of construction and fast speed.

The invention discloses a plane type jig assembly rotating flow channel device. The plane type jig assembly rotating flow channel device comprises a base frame and rotating devices at the two ends ofthe base frame; the base frame is provided with two parallel fixing slide rails in a left-right extending manner; each rotating device comprises a rotating mechanism and a rotating platform; a transferring slide rail is arranged on each rotating platform; the rotating platforms are driven by the rotating mechanisms to be capable of rotating between a first position and a second position; when therotating platforms are located at the first position, the transferring slide rails are in butt joint with one of the fixing slide rails; and when the rotating platforms rotate to the second position,the transferring slide rails are in butt joint with another fixing slide rail. According to the technical scheme, due to the fact that the two ends of the base frame are each provided with the corresponding rotating device, a jig assembly on one fixing slide rail can move to the other fixing slide rail after rotating by 180 degrees through the rotating devices, it is achieved that the jig assemblyrotates on the two fixing slide rails cyclically, the rotating speed is high, the rotating effect is high, positioning is accurate, and the front side of the jig assembly faces the outer side of thebase frame all the time.

The invention provides a large vertical lathe workbench with a C axis function. The large vertical lathe workbench comprises a base, a workbench, a driving shaft, a driving gear, a gear ring, a radial inner ring seat, a spindle support, a spindle, an encoder, a circular grating, a rotary disk, an axial pressing disk, an axial pressing static pressure plate and a pressing flow controller, wherein the driving gear is connected to the driving shaft, the gear ring is connected to the workbench, and the driving gear is engaged with the gear ring; the radial inner ring seat is fixedly arranged on the gear ring, and a radial static pressure bearing outer ring is fixedly arranged on the radial inner ring seat; the spindle support is fixedly arranged on the base, a flow distributor is fixedly arranged on the spindle support, a radial flow controller is fixedly arranged on the flow distributor, and a radial static pressure bearing inner ring is fixedly arranged on the spindle support; the encoder is connected with the spindle, and the circular grating is installed on the spindle; the rotary disk is fixedly connected with the workbench and the spindle; the axial pressing disk is fixedly arranged on the spindle support, and the axial pressing static pressure plate and the pressing flow controller are installed on the axial pressing disk. The large vertical lathe workbench has the advantages of capability of rotation and indexing positioning, high rotating speed and high positioning accuracy and is suitable for processes of punching of the end surfaces of parts, groove milling and the like.

A vehicle structure with a door seal includes an upper-edge seal member which is attached to a vehicle body along an upper edge of a front door opening and a vertical seal member which is attached to a rear end portion of a front side door (door body) in a state of being separated from the upper-edge seal member in a vertical direction. The vertical seal member includes a hollow portion which is formed downward in a hollow shape, an upper-end opening which is open upward in communication with an upper end of the hollow portion, and an enlarged portion which is interposed between the upper-end opening and the hollow portion and is enlarged larger than the hollow portion.

The invention discloses a polyurethane grinding wheel and a production process thereof. According to the polyurethane grinding wheel, abrasive materials in raw materials are carborundum, and polyurethane is adopted as a binding agent; and the polyurethane comprises a polyurethane material A and a polyurethane material B. The production process includes the steps that material mixing is firstly carried out, wherein the carborundum and the polyurethane material A are put into a material mixing machine to be mixed, and the polyurethane material B and auxiliary materials are sequentially added to be evenly mixed; then a mixed material is screened to be placed into a die to be subject to pressing molding; and finally, a green body is sintered for 8 h to 24 h at the temperature ranging from 125 DEG C to 165 DEG C, and is cooled to be discharged out of a furnace. According to the production process, the polyurethane serves as the binding agent to produce the grinding wheel, the auxiliary materials in an existing grinding wheel recipe can be applied to the method according to the production requirement, and the manufactured grinding wheel has the beneficial effects that the sintering temperature is low, saved energy resources are many, pollution is avoided, the molding density is large, the grinding wheel balance is good, the rotating speed is high, the grinding performance is high, and the production period is short, and the quality of products in the machine tool industry, the bearing industry, the bent axle industry, the engine industry and the steel rolling industry is improved.

The invention provides a multifunctional polyester vortex spinning fabric and a production method thereof. The fabric is woven by Micronova fiber and blended cation polyester; the production method comprises the steps that the multifunctional polyester vortex spinning fabric is finally obtained after spinning, weaving and finishing are conducted on the Micronova fiber taking up the dry weight ratio of 88.5%-91.5% and the blended cation polyester taking up the dry weight ratio of 8.5%-11.5%, wherein the spinning step comprises opening picking, cotton carding, drawing, Murata vortex spinning anddouble twisting, the weaving step comprises yarn steaming, waxing and machine weaving, and the finishing step comprises knitted fabric singeing, boiling and bleaching, dyeing, soft winding processing, dehydrating, drying and finishing. By means of the method, the antibacterial, wear resistant and ultraviolet resistant fabric with light and soft fabric surface and better permeable preventing performance can be obtained.

The invention relates to a portable full-automatic overturning nursing mattress. The portable full-automatic overturning nursing mattress consists of a bottom cushion, independent overturning frame, overturning air chambers, a supporting cushion, air ducts, an air pump and a control system, wherein the flexible back surface of the bottom cushion is skidproof; a plurality of independent overturningframes which are arrayed on the surface of the bottom cushion are arranged on the front surface of the bottom cushion; each independent overturning frame consists of a bottom plate, a supporting plate and an overturning air chamber, and one end of each bottom plate is hinged to one end of the corresponding supporting plate; each overturning air chamber is arranged between the corresponding bottomplate and the corresponding supporting plate; the length direction of the bottom plate of each independent overturning frame is parallel to the width direction of the bottom cushion; the hinging endsof the adjacent independent overturning frames are mutually inverted; the overturning air chambers of the independent overturning frames at odd number positions and the overturning air chambers of the independent overturning frames at even number positions are separately connected in parallel by the different air ducts, and communicate with the air pump through corresponding valves; a flexible supporting cushion is arranged on an overturning frame group consisting of all the independent overturning frames; and the bottom of the supporting cushion is elastically connected with the center location of the supporting plate of each independent overturning frame and ends which are not hinged of each independent overturning frame. According to the overturning nursing mattress, small-angle overturning can be performed in a low speed, and integral large-angle overturning can be quickly performed as needed; and simple components are mounted, so that the operations of back lifting and leg bending can be autonomously completed.

The invention discloses a variable shape optimization device for a front double-wheel self-aligning balance assembly of an inverted three-wheel vehicle. The device comprises a connecting assembly, a swing arm upper assembly, a swing arm lower assembly, a movable frame, a bearing pin, a spring, a spring seat and an angle limiting positioning piece, and a middle shaft fixing column is parallel to ahandlebar steering shaft in a handlebar steering assembly. All the assemblies are connected through bearing pins and nuts to form a self-aligning balance assembly capable of enabling the swing arm andthe movable frame to move up and down within an angle limiting range. And the self-aligning balance assembly cannot perform steering motion along with the steering shaft of the handlebar. And after the shock absorbers in each group (2) are connected through a shock absorber steering assembly or a rocker arm type shock absorption steering rack or an integrated shock absorption steering rack, the other ends of the shock absorbers clamp the wheels in the middle for connection, or the wheels are placed on the inner side or the outer side of the lower end of the shock absorber group for connection. Three appearances for placing the front double wheels (inner, middle and outer) are formed.

The invention relates to a full-automatic pipe fitting opening lathing machine. The full-automatic pipe fitting opening lathing machine comprises a base, and the top of the base is provided with a rotating feeding mechanism, a pipe fitting fixing mechanism and an automatic turning mechanism; the rotating feeding mechanism includes an index plate base disposed above the base, a hydraulic index plate disposed above the index plate base and a rotating table disposed above the hydraulic index plate, and the base is a cross-shaped structure; the bottom of the index plate base is fixedly connected with the top of the base, and the bottom of the hydraulic index plate is fixedly connected with the top of the index plate base; and the rotating table is a circular plate with right angle notches around. According to the full-automatic pipe fitting opening lathing machine, the labor is replaced with machines, and the manpower is saved; the turning speed is high, and the production efficiency is significantly improved; and the tool distance is accurately controlled by a servo motor, the consistency of pipe fitting ports is high, and the product quality is stable.

The invention discloses a suspension structure of suspension type permanent magnet magnetic levitation rail transit equipment. Through a sky beam, permanent magnet rails, a bogie, permanent magnet blocks, hydraulic cylinders, rubber wheels, side plates and connecting plates, a lift car and the sky beam are subjected to suspension separation, a driving system between the connecting plates and the sky beam is used for providing power, the bogie is used for providing guidance, and the lift car is driven to move in the sky beam track direction. According to the invention, the sky beam is set as asquare closed structure and can be conveniently formed through welding or direct casting, and the permanent magnet rails are arranged outside the formed sky beam, so that machining is convenient; thedistance, parallelism and planeness of the two side walls of the bogie are accurately guaranteed, the stable guide distance is guaranteed, guide force cannot be suddenly changed, stable guide is guaranteed, and noise generated when the rail transit equipment runs is reduced.

According to the scheme, the invention provides an auxiliary turning device. The auxiliary turning device comprises a supporting base, an adjusting rod, a first transmission device, a driven rod, second transmission devices, a lock device and a workbench. The first transmission device comprises a first motor, a first rotating shaft and a first transmission rod. Each second transmission device comprises a driven tray, a clamping device, a second rotating shaft, a second motor and a second transmission rod. The auxiliary turning device is reasonable in structure and low in cost, deflection of the turning position due to the movement of a turning tool can be reduced, the reject rate is reduced, the turning speed is increased, and the turning efficiency is improved.

The invention discloses a rotary turning device for oil pipeline processing. The device structurally comprises a power supply cabinet, a power switch, pipeline adjustable fixing sleeves, a pipeline supporting base, a rotary turning device and a fixed baseplate. The pipeline supporting base is arranged above the rotary turning device and is in interference fit with the rotary turning device, and the two pipeline adjustable fixing sleeves are uniformly arranged on the pipeline supporting base at an interval and are in clearance fit with the pipeline supporting base; an oil pipeline is placed inthe pipeline supporting base and tightly locked on the pipeline supporting base by means of the pipeline adjustable fixing sleeves, the direction of the pipeline can be adjusted on site through the rotary turning device, and the consumed time is short. The turning speed is high, the pipeline can quickly enter a next step for processing, improvement of the efficiency of continuous production of thepipeline is facilitated, only one worker is needed in the turning process, the operation is simple, and the risk during turning of the pipeline is reduced.

The invention discloses a long-shot type sprayer for fruit and vegetable irrigation. The long-shot type sprayer comprises a sprayer body and a refraction cone. The sprayer body is provided with a liquid runner and a spraying hole. An installing frame is arranged in the liquid runner. A liquid passing hole is formed in the installing frame. The refraction cone penetrates the spraying hole and is connected with the installing frame. The refraction cone is provided with a taper disc located above the spraying hole. Two air inlet channels are symmetrically arranged on the sprayer body and connected with bent pipes. The scheme has the beneficial effects that the sprayer body is additionally provided with the air inlet channels, high-speed compressed air is introduced in the air inlet channels, when irrigation water is sprayed out of the spraying hole and is injected all around through the taper disc, high-speed air flow crushes thick water drops into small water drops to be blown remotely, and therefore the spraying range of the sprayer is long, the requirement for irrigation of fruits and vegetables can be sufficiently met, and the application range of the sprayer is enlarged.

The invention relates to the technical field of flyovers and is characterized in that: a longitudinal left-turn ramp is arranged between the outer side of an arched overpass bridge of a longitudinal road and the inner side of a longitudinal left-turn downgrade ramp for an opposite coming vehicle; the longitudinal left-turn ramp and the overpass bridge are abreast upward; after bridging over a transverse road surface, the longitudinal left-turn ramp is parallel to the ground between the airspace of the transverse road surface and the airspace of the bridge head at the downgrade end of the overpass bridge; then the longitudinal left-turn ramp turns left to bridge over a longitudinal road surface and a longitudinal left-turn upgrade ramp on the outer side of the other end of the overpass ridge, and turns around and moves downwards to get into a first lane of the transverse road surface; after the first lane of the transverse road surface underneath passes through a longitudinal left-turn air ramp, namely the first lane turns right and moves upwards along the inner side of the first lane until the first lane is connected to the corner of the longitudinal left-turn ramp, the first lane turns left on the inner side and bridges over the longitudinal road surface, then turns left again at a position close to the inner side of the longitudinal left-turn upgrade ramp and moves forwards in a state of being parallel to the ground, and gets into the overpass bridge at the highest part of the arched overpass bridge; furthermore, intersection platforms are arranged at intersections between the longitudinal and transverse left-turn upgrade ramps and the middle part of the left-turn downgrade ramp for the opposite coming vehicle, so that longitudinal and transverse right turns can be realized.

The invention relates to a vehicle capable of climbing on stairs, in particular to an accessory of a stair-climbing vehicle for firefighting, and provides a double-wheel touch locking type turning advancing mechanism and a stair-climbing vehicle. The double-wheel touch locking type turning advancing mechanism can rapidly advance on the stairs and make a turn on a stair landing rapidly and conveniently. The double-wheel touch locking type turning advancing mechanism mainly comprises a supporting leg assembly, a front touch locking assembly and a rear touch locking assembly. The supporting leg assembly comprises a left supporting leg and a right supporting leg, wherein wheels are arranged at the rear end of the left supporting leg and the rear end of the right supporting leg respectively, and a supporting leg front lock rod (51) and a supporting leg rear lock rod (52) are fixed to the supporting leg assembly. The front touch locking assembly comprises a front touch rod (31), a front touch rod crank arm (311), a front touch rod crank arm oval hole (312), a front connecting pin (321), a front locking dog pull rod (32), a front locking dog (33), a front lock box (34) and a front compression spring (35), wherein the front touch rod drives the front locking dog to move so as to stop or release the supporting leg assembly, and the rear touch locking assembly is similar to the front touch locking assembly.