74results about How to "Fast traction" patented technology

A dynamic braking circuit that can be operated with stability over both high and low speed regimes. This circuit has the advantage of using fewer components than previous circuits. In addition, when in braking mode, the armature and field currents tend to oppose each other across the main braking switch hence reducing electromechanical stresses when in high current regime. According to a second embodiment, a dynamic braking circuit implements a “soft” extended braking function with the capability of providing a smoother braking action at high braking effort at little extra cost resulting from the replacement of a contactor by a reverser. The main advantages of this preferred embodiment are that the current generated by the armatures during braking can be controlled independently from the excitation of the field windings at low speeds and that it enables simultaneous self supply, regeneration and dynamic braking.

The invention discloses a continuous melting dipping machine head and a method for forming a long fiber reinforced thermoplastic resin. According to the melting dipping machine head, a melt distributing flow channel and a dipping flow channel are arranged in the machine head; each material outlet of the melt distributing flow channel is connected with the dipping flow channel through a discharging roller; an inlet channel and an outlet channel are arranged at two ends of the dipping flow channel; at least one group of tension rollers are arranged between the inlet channel and the discharging roller; and at least one group of the tension rollers are arranged between the outlet channel and the discharging roller. The method comprises the following steps of: feeding continuous long fiber bundles into the dipping flow channel through the inlet channel, and drawing out of the continuous long fiber bundles from the outlet channel after the continuous long fiber bundles penetrate through the discharging roller, in a process, thermoplastic melt penetrates through a discharging roller permeating glass fiber through the melt distributing flow channel and is fed into the dipping flow channel; and further dipping the continuous long fiber bundles. According to the melting dipping machine head provided by the invention, the melt distributing flow channel is arranged and is connected with the dipping flow channel through the discharging roller, thus, melt contacted with each long fiber bundle can be consistent in pressure and flow rate, and balance of a dipping effect of each continuous long fiber can be ensured.

The invention relates to a large-displacement horizontal well continuous tubing drilling robot, which comprises a former centralizer, a rear centralizer, a front motion short joint, a back motion short joint and an extension shortening section; the front motion short joint, the back motion short joint and the extension shortening section are connected to each other in turns; the former centralizers and the rear centralizers are respectively installed at the front end and the rear end of the front motion short joint and the extension shortening section. The large-displacement horizontal well drilling robot is provided with a mud flow channel, which can circulate mud in tow continuous tubing and drilling, therefore the resistance of mud is reduced to the maximum extent. The large-displacement horizontal well drilling robot can carry on two-way haulage, which can solve the jam problem of the robot to a great extent. The large-displacement horizontal well continuous tubing drilling robot is not only suitable for hot dry rock development, but also suitable for unconventional oil and gas (natural gas hydrate, coalbed methane, tight oil and gas, shale gas) and conventional oil and gas resources development.

The invention is concerned with the method and the bolt head mould for using the sizing opening-module to produce multi-standard plastic pipe, the method is: puts in the material, heats to melt, extrudes, sizing cooling, tows, cutting to length, the heating melted material extrudes from the opening module, then tows in the sizing mould, the inside diameter of the opening mould is bigger that the inside diameter of the sizing mould, the linear velocity ratio of the heating melted material extrusion and the sizing cooling produce is U<=1, the inside cavity diameter of the opening mould is bigger than the inside cavity diameter of the sizing mould, between the opening mould and the sizing mould is a gap. The features of the invention are: can produce multi-standard pipe, save material, improve efficiency, high output.

The invention discloses a high-reliability cable pay-off traction clamp, which comprises a suspension loop, a clamping mechanism and an outer sleeve, wherein the suspension loop is fixedly connected with one end of the outer sleeve; an inner sleeve is sleeved with the outer sleeve; the clamping mechanism is arranged on side walls of the outer sleeve and the inner sleeve in common; a transmission gear is arranged on an outer side wall of the outer sleeve and comprises a box body; the box body is fixedly connected to the outer side wall of the outer sleeve; the lower surface in the box body is fixedly connected with a bearing block; the internal part of the bearing block is rotationally connected with a rotating shaft through a bearing; one end of the rotating shaft penetrates through the box body and extends to the outside of the box body; one end, which extends to the outside of the box body, of the rotating shaft is fixedly connected with a handle; and one end, far away from the handle, of the rotating shaft is fixedly connected with a first bevel gear. According to the high-reliability cable pay-off traction clamp, cable traction can be quickly and conveniently completed in the absence of an external tool, and meanwhile, the cable subjected to traction is conveniently taken out from the clamp on the basis of not damaging the clamp.

The invention discloses a clamping mechanism. The clamping mechanism comprises a base frame component and a clamping component, wherein the base frame component is provided with a longitudinal shaft component longitudinally extending and a transverse shaft component transversely extending; the clamping component comprises an upper jaw component and a support plate; the support plate is connected with the longitudinal shaft component, and rotates around the axis thereof; the upper jaw component is connected with the transverse shaft component, and rotates around the axis thereof; the longitudinal shaft component is connected with a longitudinal shaft driving component; the upper jaw component is connected with a transverse shaft driving component; and the longitudinal shaft driving component and the transverse shaft driving component are arranged on the base frame component. The transverse shaft driving component drives the upper jaw component to upwards rotate to release a profile in unloading; then, the longitudinal shaft driving component enables the support plate to rotate by a certain angle to leave from the bottom end of the profile; and the profile automatically drops down due to gravity, so that the time is saved, and the profile is not damaged. A tractor provided with the clamping mechanism can quickly tow the profile, and can quickly unload while undamaging the profile. The clamping mechanism and the tractor are used for large-span profiles, in particular for the clamping and quick traction of aluminum profiles.

The invention discloses a structure for assisting a traction skyline to cross a river by a cable crane traveling trolley. The structure comprises a traction system, a connection system, the cable crane traveling trolley and a lifting traction rope; the traction system comprises the cable crane traveling trolley, a reciprocating rope, a skyline windlass, an unwinding-side reciprocating rope windlass, a non-unwinding-side reciprocating rope windlass, a bent track and a guiding roller; the connection system comprises a rope clamp, a filling steel wire, an anchor device and the lifting traction rope; the lifting traction rope is connected with the skyline and the cable crane traveling trolley; the unwinding-side reciprocating rope windlass and the skyline windlass reel off ropes, the non-unwinding-side reciprocating rope windlass takes in the rope, and the cable crane traveling trolley moves towards a non-unwinding side under the drive of a traction mechanism. The structure overcomes the disadvantages, i.e., low efficiency, long construction period and potential safety hazards in the prior art and has the advantages of short construction period, stable traction process, high economic benefit and high coefficient of safety of river crossing. The invention further discloses a method for assisting the traction skyline to cross the river by the cable crane traveling trolley.

The invention provides a 1000T pure-electric three-head tractor. The 1000T pure-electric three-head tractor comprises an upper layer guide rail unit, a lower layer guide rail unit, a roller frame, a first drawing head, a second drawing head and an automatic interruption saw; the middle part of the upper layer guide rail unit is provided with a first rack; the middle part of the lower layer guide rail unit is provided with a second rack; the first drawing head comprises a first drawing vehicle, a first driving gear and a first servo motor, wherein the first driving gear is arranged inside the first drawing vehicle and is engaged with the first rack; the first servo motor is reversely arranged at the bottom of the first drawing vehicle and is in transmission connection with the first drivinggear; the second drawing head comprises a second drawing vehicle, a second driving gear and a second servo motor, wherein the second driving gear is arranged inside the second drawing vehicle and isengaged with the second rack; and the second servo motor is reversely arranged at the top of the second drawing vehicle and is in transmission connection with the second driving gear. The 1000T pure-electric three-head tractor provided by the invention has the advantages of extremely high drawing speed, flexible start and braking, small inertia, relatively low running noise, stable performances, low fault rate and the like.

The invention discloses an automobile trailer structure and an automobile. The automobile trailer structure comprises a mounting seat, a trailer hook and a trailer rope, wherein the mounting seat is used for being arranged on an anti-collision beam; the tow hook is detachably mounted on the mounting seat and is provided with a mounting position fixed on the mounting seat and a separation position separated from the mounting seat; one end of the towing rope is connected to the mounting seat in a retractable manner, and the other end of the towing rope is connected with the towing hook. The automobile trailer structure is advantaged in that one end of the tow rope is connected to the mounting seat in a retractable manner, and the other end of the tow rope is connected with the tow hook, so the tow rope and the tow hook are integrated, the tow rope is directly pulled out through the tow hook to assemble an anchored vehicle, rapid vehicle traction is realized, and rescue efficiency is improved.

The invention relates to a vacuum cylinder which can be used to produce the thermal plastic foam sheet as polyethylene, polyphenylacetylene, etc, wherein it comprises: a vacuum cylinder, a transmit band, a support column, and a water groove; said vacyym cylinder contains transmit band, while its lower part has support column; said cylinder is inclined mounted on the support column, while its upper part has vacuum exhaust open through to the vacuum pump; the lower part of cylinder has a water groove with water baffle plate; the high end of cylinder has vacuum sealing plate; and the high part of vacuum cylinder ahs the foaming sheet inlet, while its lower part has the foaming sheet outlet; the difference between the high and lower parts is 2-10m; and the diameter of said vacuum cylinder is 1-4m.

The invention provides a muLtifunctionaL garment-Lace processing device. The muLtifunctionaL garment-Lace processing device comprises a roLLer wheeL, a U-shaped frame, connecting pLates, Locking boLts, sLiding grooves, a puLLing rope, ear pLates, a rotating rod and sLiding strip bLocks, wherein the roLLer wheeL is in roLLing connection on the U-shaped frame, the U-shaped frame is arranged at the upper ends of the connecting pLates, the ear pLates are fixed to the front portions of the Lower end faces of the connecting pLates through boLts, and are connected on the Left side and the right sideof the rotating rod through bearings, the puLLing rope is wound around the rotating rod, and is fixed in the middLes of the front end faces of the sLiding strip bLocks through screws, the sLiding grooves are formed in the inner side faces of the connecting pLates, the sLiding strip bLocks are arranged on the sLiding grooves, the Locking boLts are connected at the upper ends of the sLiding strip bLocks, and the Lower ends of the Locking boLts extend into the sLiding strip bLocks. Garment Lace can be rapidLy puLLed through the design, the muLtifunctionaL garment-Lace processing device is convenient to use and operate and capabLe of rapidLy puLLing, and the using comfort degree is improved.

The invention relates to the field of production of PVC (Polyvinyl Chloride) foaming plates and particularly relates to production process and production equipment for secondary shaping of a PVC foaming core plate, aiming at the technical defects that the finished PVC foaming core plate product manufactured by using an existing one-time shaping production process easily has contraction deformation and arch bending. The production process comprises the following sequential steps: (1) extruding and discharging; (2) putting materials into a die to form a blank; (3) cooling and shaping; (4) drawing for the first time; (5) shaping for the second time; and (6) drawing for the second time. According to the production process and the production equipment, the PVC foaming core plate is machined by carrying out two-time temperature raising on the materials and the plate blank and carrying out two-time cooling and shaping on the plate bank, so as to effectively reduce shrinkage ratio and the arch bending rate of the PVC foaming core plate and improve the product quality of the PVC foaming core plate; the problems caused by existing one-time shaping process and equipment of the PVC foaming core plate are solved.

The invention discloses a degradable heat sealing film for compounding and a preparation method thereof. The degradable heat sealing film comprises a heat sealing layer, a middle layer and an outer layer, which are connected in sequence. The middle layer comprises the following components in parts by weight: 35 to 45 parts of PBAT, 35 to 45 parts of PLA, and 15 to 25 parts of a biodegradable nucleating agent; the heat sealing layer comprises the following components in parts by weight: 80 to 90 parts of PBAT and 10 to 20 parts of a biodegradable nucleating agent; and the outer layer comprisesthe following components in parts by weight: 80-90 parts of PBAT and 10-20 parts of a biodegradable nucleating agent. The degradable heat sealing film has the advantages that the crystallization rateof an extruded material is high, the melt strength is high, the film is not easy to break under traction, the film is easy to form, the heat sealing property is good, the printing effect is good, thehardness is moderate, certain softness and certain stiffness can be considered, and the degradable heat sealing film can be compounded with a printed film to be used as a heat-sealing layer and can beindependently made into bags.

The invention discloses a water-cooled bracing and dicing machine, and belongs to the technical field of bracing and dicing machines. The water-cooled bracing and dicing machine comprises a bracing and dicing machine body used for dicing a material strip, the bracing and dicing machine body comprises a movable cutter assembly, the movable cutter assembly comprises a movable cutter shaft and a movable cutter installed on the movable cutter shaft, and a cooling water channel is formed in the movable cutter shaft. After cooling water is introduced into three parts including the cooling water channel in the movable cutter shaft, a first cooling water cavity in a fixed cutter holder and a second cooling water cavity in the side wall of a dicing chamber, the service life of the movable cutter and a fixed cutter can be prolonged, meanwhile, thermal expansion is avoided, and the phenomenon that the movable cutter and the fixed cutter collide with each other when a gap is small is prevented. Due to the water cooling effect, the secondary cutting phenomenon generated due to the fact that the material strip adheres to the movable cutter after being cut off due to the fact that static electricity is generated can be prevented.

The invention improves a belt shaping conveyor, which includes a frame, a collecting box, a first shaping conveying part and a second shaping conveying part, and the first shaping conveying part includes a feed plate, a plurality of first rollers, a fence, The first guide roller group and the belt traction device, the feeding plate is also provided with a knotting induction device, and the first induction device and the second induction device that can detect the belt capacity are arranged in the collection box; the second shaping and conveying part includes a guide Material plate, triangular idler roller, second guide roller set, third guide roller set, belt tensioning device and fourth guide roller set, belt tensioning device includes belt flattening device, second idler roller and counterweight guide roller set , the belt flattening device is arranged above the frame, the second idler roller is arranged between the belt flattening devices, and the counterweight guide roller group is arranged under the second idler roller which can be lifted up and down. Thereby it is shown that the present invention has the advantages of being able to ensure that the belt is not knotted when it enters the coloring process, and that the belt can be automatically corrected and leveled without the need for workers to monitor for a long time.

The invention relates to the technical field of play melon de-seeding and harvesting equipment, in particular to a normal traction seed melon pick-up and de-seeding combined machine which comprises a frame, a traction frame, a lifting cylinder frame, a play melon pick-up roller, a crushing device, a melon combing device, a separating device, a conveying device, a seed box, a driving shaft and a transmission device. The traction frame is fixed to the front end of the frame, the lifting cylinder frame is mounted at the upper end of the front of the frame, a pick-up rotating shaft is mounted on the lifting cylinder frame through a left shaft seat and a right shaft seat, and the play melon pick-up roller is mounted on the pick-up rotating shaft. The normal traction seed melon pick-up and de-seeding combined machine is reasonable and compact in structure, convenient to use and low in cost, the front-end normal traction play melon pick-up roller can early contact play melons, waste caused by melon breaking is decreased, the play melons can fall into the crushing device downwards and crushed, rotating processes are decreased, so that the play melons are rapidly crushed, loads of the play melon pick-up roller are relieved, traction and movement are more flexible, the play melons are linearly conveyed from front to back from crushing to separating, de-seeding efficiency is improved, and the shape size of the combined machine is reduced.

A method for making wide-mesh warp knit fabric involves forming tricot-laid loops of fixing threads (4) along the warp threads (2) at both the coss-overs and the mesh openings without twisting (2), running (2) through the knitting tools with no misalignment, binding warp and weft threads together with (4) at the cross-overs and periodically changing the pull-off speed to make it lower when the cross-overs pass through the knitting station and higher when the mesh openings pass through. A method for the production of warp knit fabric with a biaxial wide-mesh structure, in which (a) a crosswise arrangement of warp (2) and weft (3) threads (singly or in groups) is taken to a knitting station (8), (b) loops (20) of fixing threads (4) are formed along the warp threads both at the cross-over points (5) and also at the mesh openings (6), (c) the loops (20) are tricot-laid, (d) the warp threads run through the knitting tools with no misalignment, (e) the loops (20) are formed without twisting the warp threads, (f) the warp and weft threads (2, 3) are bound together by the fixing threads (4) at the cross-overs (5), (g) the mesh structure is pulled off the station (8) and (h) the pull-off speed is periodically changed, being lower when the cross-overs (5) are passing through the knitting station (8) and higher when the mesh openings (6) are passing through.

The invention relates to a polyvinyl chloride hollow fiber ultrafiltration membrane. A membrane casting solution used for preparing the polyvinyl chloride hollow fiber utlrafiltration membrane is prepared from ingredients in weight percentage: 10 to 30% of polyvinyl chloride, 3 to 10% of hydrophilic agent, 5 to 10% of pore forming agent and 50 to 82% of solvent. A preparation method of the polyvinyl chloride hollow fiber ultrafiltration membrane comprises the following steps: A, preparing the membrane casting solution by all the ingredients according to the weight ratio; B, fully and evenly stirring the membrane casting solution under 45 to 80 DEG C to remove air bubbles; C, pumping the membrane casting solution into an insert tube type hollow fiber spinning nozzle, staying in air 0.2 to 2 seconds and entering solidifying water bath to form the membrane, wherein a traction speed is 30 to 110meter/minute. The polyvinyl chloride hollow fiber ultrafiltration membrane disclosed by the invention has the following beneficial effects of longer service life, larger water discharge capacity, lower energy consumption, high elongation at break, strong hydrophilicity, high bearable pulling speed and strong applicability.

The invention relates to a fast connection electric wire device with a fault diagnosis function, which includes a main body, a wire inlet and a display screen, a fixing groove is fixed on the inner side of the top of the main body, and an outlet port is arranged inside the main body, a frame is mounted on the inner side of the main body, and the interior of the frame is fixed with rails, the bottom outer side of the track is movably provided with a gear clamp block. The invention has the advantages that: in accordance with the present invention, the main body, the camera, the bidirectional telescopic bar, the movable board, the movable block and a movable slot are arranged, and the camera is symmetrical about the transverse axis of the bidirectional telescopic bar; when the device is working quickly to connect the wires, through the camera, workers can observe and operate the working condition inside the device, so that the staff can know whether the device has faults or not in real time through the display screen, and can diagnose and operate some common faults when the equipment is working through the function of the relevant parts inside the equipment, so as to improve the efficiency of wiring work of the equipment.

The invention relates to an equipment of continuous casting memory alloy wire of Cu-based shape and a production method thereof. The equipment of the invention comprises a heater provided on cast mould, guiding wires and a cooler; one end of the cast mould is introduced into alloy liquid, the height of which is higher than the molding cavity of the cast mould; the other end of the cast mould is inserted with guiding wire that is bound with liquid column flowing out of the molding cavity and drawn by a drawing mechanism; the cooler is arranged between the cast mould and the drawing mechanism. The steps of the invention are that: 1) heating the cast mould to 1050-1100 DEG C; 2) alloy liquid entering the molding cavity from one end of the cast mould and the other end being inserted with guiding wire; after the guiding wire and alloy liquid are bound; the drawing mechanism is started to form a suspending liquid column out of the molding cavity of the cast mould; the liquid column is cooled by the cooler arranged outside of the cast mould, leading the liquid column to be solidified into guiding wire in vertical direction. By adopting the equipment of the invention, surface crack and wave-shaped tortuous can be avoided. The invention is of simple operation method and convenient use.