55results about How to "Reduce tension differences" patented technology

An improved bicycle wheel is disclosed which has reduced dish by comparison with a conventionally laced wheel. The wheel is one which, when laced conventionally, would be dished such as a rear wheel with at least one sprocket or a front wheel with a brake disk. In a rear wheel embodiment, the spokes extend from inside to outside, through a proximate hub flange and along the outside or sprocket surface of the proximate hub flange and from outside to inside through the opposed hub flange and along the inside or sprocket surface of the opposed hub flange. In a front wheel embodiment, the spokes extend from inside to outside through the proximate hub flange along an inside or disk surface thereof and from outside to inside through the opposite hub flange and along the inside or disk surface thereof. The spokes in a given flange of a hub according to the present invention are all secured to the hub flange at substantially the same axial location relative to the axis of rotation of the hub or have spoke elbows which are all at substantially the same axial location relative to the axis of rotation of the hub. As a consequence of the reduced dish there is a reduction in the tension differential between the proximate spokes and the opposed spokes. According to another aspect of the invention, spoke bores in each of the hub flanges are grouped into pairs and the circumferential distance between adjacent pairs is greater than the distance between bores in a given pair.

The invention provides a multi-bushing plate merging wiredrawing technology. Specifically, 2 or more bushing plates are employed, and each bushing plate is provided with a plurality of leaks. Molten glass flows through each leak of each bushing plate and is cooled, and then a plurality of glass fibers can be obtained through wiredrawing molding respectively. Pulled by a wiredrawing machine driven wire cylinder, the glass fibers respectively pass through multiple upper bunchers and are neatened and gathered into glass fiber bundles, which are then neatened and gathered by a gathering buncher into a complete glass fiber bundle that is then wound on the wire cylinder into a finished glass fiber bundle. A multi-bushing plate wiredrawing device is provided with 2 or more bushing plates, each of which is equipped with a plurality of leaks. An upper buncher is installed behind each bushing plate respectively, a gathering buncher is arranged behind each upper buncher, the wiredrawing machine is disposed behind the gathering buncher, the wire cylinder is positioned on the gathering buncher, and the wire cylinder and the wiredrawing machine are in driving rotary connection. With the technology and device provided in the invention, the manufacturing cost of a bushing plate for a glass fiber bundle with a great weight of per unit length can be reduced, the band forming property of the glass fiber bundle can be improved, and the effect can be obvious.

A belt layer in which one or more belt cords covered with rubber are arranged spirally wound substantially in parallel in the tire circumferential direction, and at least one layer is arranged on the outer periphery of the main body ply. The belt cord has a small increase ratio of the tensile load with respect to an increase in the elongation at a predetermined elongation or less, and a large increase ratio of the tensile load when the elongation exceeds the predetermined elongation. Therefore, since the belt cords expand together with the unvulcanized compound rubber with a small tensile load during vulcanization molding, and the expansion of the main body ply cords is not prevented, the normal shape of the raw tire is maintained and expanded, Reliably fit and vulcanize each part.

The invention relates to a bi-motor yarn tension control device of a disposable warping machine, which is characterized in that a driving shaft (2) and a wrapping roller (6) are respectively driven by a motor; a three-roller delivery device is arranged above the front of the driving shaft (2), two ends of the wrapping roller (6) in the three rollers are respectively arranged in bearing blocks on a wallboard (29), and an upper pressing roller (7) and a side pressing roller (10) in the three rollers can be pressed or loosened on the periphery of the wrapping roller (6). The invention respectively controls the winding of the driving shaft and the yarn delivery of the three-roller delivery device through two motors because of controlling the yarn tension at a machine head, and the driving shaft controls the winding moment through the regulation of a transducer by utilizing the moment control principle so as to lead the driving shaft to realize the constant tension winding; and a three-roller drive motor realizes constant yarn winding speed through the regulation of the transducer by utilizing the speed control principle. The cooperation of the two control methods of the two motors accurately controls the yarn tension.

The invention belongs to the field of lifting equipment, and relates to a double-pulley lifting device with a balancer. The double-pulley lifting device comprises a winch, a balancing pole, a liftingtrolley and two traction ropes, wherein the winch is fixedly arranged on a rigid support, and the midpoint of the balancing pole is rotatably arranged on the rigid support; the lifting trolley is provided with double pulleys, the two pulleys are arranged on the two corresponding sides of the lifting trolley respectively, and the two traction ropes are connected with the two ends of the balancing pole after being wound across the two pulleys. The invention further relates to a double-pulley lifting oxygen lance device with a balancer. The double-pulley lifting oxygen lance device with the balancer comprises a winch platform and an oxygen lance, and further comprises the double-pulley lifting device with the balancer. The balancing pole can automatically and sensitively reduce the tension difference value between the two traction ropes in the double-pulley lifting device in the working process, traction rope uneven abrasion caused by the excessive tension difference value of the tractionropes is prevented, the service life of equipment is prolonged, maintenance frequency is reduced, and the production efficiency is improved.

A synchronous conveying structure comprises a driven shaft, a first transmission wheel, a second transmission wheel, two transmission belts, a conveying seat, a retaining piece and a retaining ring, wherein the first transmission wheel and the second transmission wheel sleeve the driven shaft at interval, the second transmission wheel fixedly sleeves the driven shaft, and the first transmission wheel rotatably sleeves the driven shaft; the conveying seat is provided with at least two conveying units at interval and in parallel; the driven shaft is arranged on the conveying seat at interval; the retaining piece and the retaining ring are mounted on the driven shaft and abuts against both sides of the first transmission wheel to clamp the first driven wheel, so that the axial position of the first transmission wheel relative to the driven shaft can maintain constant; one sides of the transmission belts are accommodated inside the corresponding conveying units to form a conveying passage between the conveying units and the transmission belts. According to the synchronous conveying structure, the two transmission belts can maintain the relative identity in position relatively easily, have small tension difference and avoid fluctuation. Meanwhile, the synchronous conveying structure is simpler in structure.

The invention belongs to the technical field of FDY mother filament tools and particularly relates to a reversely-rotating pre-filament-separation system device for mother filaments. The reversely-rotating pre-filament-separation system device for the mother filaments comprises an FDY mother filament frame, filament guiding hooks and monofilament cakes, a lower filament guiding rod and an upper filament guiding rod are arranged above the FDY mother filament frame, thereby the mother filaments can be naturally dispersed and arranged on a reversely-rotating godet wheel side by side, monofilaments are separated naturally when the mother filaments leave the reversely-rotating godet wheel, and filament separating points are fixed to points, from which the mother filaments leave, of the reversely-rotating godet wheel. The reversely-rotating pre-filament-separation system device has the advantages that the filament separating point positions are fixed, so that tension tightness is avoided; the filament separating point positions are raised, so that tension differences among all spindles are decreased; in the FDY mother filament separating process, tension is maintained stable, monofilament rupture is avoided, and the monofilaments are maintained being shaped up in a good condition.

The invention provides a one-step-method yarn doubling winder and belongs to the technical field of textile machinery. The one-step-method yarn doubling winder comprises a machine rack and a plurality of groups of yarn doubling winding mechanisms arranged on the machine rack, wherein each yarn doubling winding mechanism comprises a yarn inserting device, a yarn guiding device and a winding device which are arranged on the machine rack from bottom to top, the yarn inserting device is a novel yarn inserting spindle provided with two or more spindle bodies, the yarn guiding device is composed of a spindle split type disc spring tensioner, an S-shaped yarn guiding plate, a disc tensioner, an electronic yarn clearer and a yarn detecting rod which are arranged on the machine rack, and the winding device comprises a fixing rack and a main motor which are arranged on the machine rack. A groove drum shaft and groove drum are installed on the fixing rack and are set to be parallel in a winding mode, and the groove drum shaft is connected with and driven by the main motor by using a triangle belt. The one-step-method yarn doubling winder is simple and reasonable in structure and convenient to use. Two or more bobbin yarns can be simultaneously placed, yarns can be manufactured through multiple-bobbin combination and directly used for a twisting machine and are little in hairiness, the power consumption and labor cost can be reduced by 50%, the production efficiency is remarkably improved, and the one-step-method yarn doubling winder has good comprehensive economic benefit.

The invention discloses a setting machine with a yarn dividing and false twisting function. The setting machine comprises a yarn rack, wherein a degradation bobbin is arranged on the lower part of the yarn rack; a plurality of groups of winding bobbins are arranged on the upper part of the yarn rack. The setting machine is characterized in that a rack is arranged on one side of the yarn rack; a lower transmission mechanism, a biphenyl heat box, a false twister and an upper transmission mechanism are sequentially arranged on the rack from bottom to top; the lower transmission mechanism comprises a lower friction roller arranged on the rack; a lower transmission leather roller group is compressed on the lower friction roller; the upper transmission mechanism is arranged on the upper part of the rack; a tension adjusting device is arranged on the upper transmission mechanism; an oil lubricating device is arranged under the false twister. According to the setting machine capable of dividing and false twisting, through the improvement of the lower transmission part, the biphenyl heat box, the false twister, the upper transmission mechanism and the like, the production efficiency and the product quality are improved, and meanwhile, the production energy consumption is reduced.

The invention provides a method and device for improving tension control stability of an annealing furnace. By increasing the original unit tension, the unit tension of the interior of the annealing furnace during production is obtained; the standard surface roughness threshold value of a tension roller is obtained; the surface roughness of the tension roller is controlled to be within the standard surface roughness threshold value; a tension roller load balancing factor is adjusted; and by increasing the unit tension of the interior of the annealing furnace, the tension roller load balancingfactor is adjusted, the surface roughness of the tension roller is controlled to be within the standard surface roughness threshold value, and the tension stability of the annealing furnace is controlled. The technical problem that in the prior art, a tension roller cannot provide the sufficient balance force, and thus, stable operation of strip steel cannot be ensured is solved. The technical effects that control over the tension of the annealing furnace is achieved, the tension balancing capacity of the tension roller is improved, it is ensured that the tension roller can provide enough balance force, the risk of slipping of the tension roller is avoided, the control stability of tension of the interior of the annealing furnace is greatly improved compared with the original design, and the production requirements are completely met are achieved.

The invention belongs to the technical field of bulk material transportation, and discloses a track conveyor with integrated vehicle-belt connection and reversing, which uses a wheel-rail system for material transportation, including: a load-bearing frame for laying and installing a load-bearing track, a transmission device and Wheel-type functional elements; load-bearing rails, carrying and running wheel-type functional elements; transmission devices, traction-driven wheel-type functional elements running along the load-bearing rails; wheel-type functional elements, arranged at equal intervals on the load-bearing rails for fixing conveyor belts; several wheels The conveyor belt is pulled in segments by the type functional element; the conveyor belt is not separated from the wheel type function element when it runs to the conveyor head and tail, and the wheel type function element and the conveyor belt are reversing as a whole to complete the material transportation. The reversing is completed through the reversing bracket, and the separation / combination device between the rail trolley and the conveyor belt is cancelled. And the conveyor belt runs together with the rail trolleys. Due to the interval distribution of the rail trolleys, segmental traction is realized, and the tension difference of the conveyor belt is small.

The invention relates to the technical field of cable processing, in particular to a cable stranding process and a stranding device. The stranding device includes a driving assembly and a stranding assembly. According to the moving direction of the cable, the driving assembly is located at the The moving head end of the cable; the drive assembly includes a support plate, a main drive motor, and a main shaft. It includes a front winch, a back-twist unit, a rear winch and a winch. The middle part of the front winch has a through first connecting hole, and the middle part of the rear winch has a through second connecting hole. The main shaft, the front winch and the rear winch are synchronously driven. The connecting and untwisting unit is arranged between the front winch and the rear winch. The invention is used to solve the problems in the prior art that it is not suitable for the manufacture of cable bundles with many winding wires and that if the tension of a single wire changes during the twisting process, the quality of the twisted cables will be affected.

The invention relates to a wrap angle adjustable tension measuring device for a hoisting rope. The wrap angle adjustable tension measuring device comprises a support, wherein a head sheave for a to-be-measured hoisting rope to bypass is arranged at the top of an upright post of the support; a locating seat for being connected with the first end of the to-be-measured hoisting rope is arranged on the support; a hoist drum for applying traction acting force to the second end of the to-be-measured hoisting rope is also arranged on the support; the support is also provided with reverse wheels capable of moving towards the left side and the right side. Actual use conditions of the hoisting rope are simulated by using the hoist drum, the upright post, the head sheave and the locating seat; wrap angles formed by the to-be-measured hoisting rope and two leads of the head sheave can be adjusted by changing the positions of the reverse wheels so as to adapt to different testing conditions; during measurement, the tension of a corresponding rope wire is measured by matching a corresponding grating type optical fiber sensor; key technical parameters such as tension variations of the rope wires under the working condition that all the rope wires of the steel wire rope are bent and tensioned, total tension, friction moment of the hoisting rope and the head sheave and the like are quickly and accurately measured; the wrap angle adjustable tension measuring device has important significance for evaluating service life of the steel wire rope.

The invention belongs to the technical field of bulk material transport equipment and particularly relates to a trolley group towed type adhesive tape conveyor. The problems are solved that existing adhesive tape conveyors have a large difference in tension of adhesive tapes, the running adhesive tapes deviate and are unsafe, the running resistance is large, and the energy consumption is high. Theadhesive tape conveyor comprises a fixed bearing rack, a driving device, a traction mechanism and a guiding mechanism, wherein the driving device, the traction mechanism and the guiding mechanism aredisposed on the fixed bearing rack; the traction mechanism pulls a trolley group sprocket chain to move horizontally on the rack when a machine head guide rail sprocket wheel rotates so that trolleygroup sprocket trolleys can move along a guide rail, and the adhesive tapes are moved forward simultaneously, so that transport of materials is achieved. The adhesive tapes are in fraction with trolley supports to transmit a traction force, and the adhesive tapes run along with a belt conveyor body under the action of the traction force of the trolleys; since the trolleys are distributed at intervals, segmental traction is achieved, and the difference in the tension of the adhesive tapes is small. The low-strength adhesive tapes can be selected, and the investment cost of the adhesive tapes isreduced.