34results about How to "Easy Tension Control" patented technology

A tether continuous energy supply system for an unmanned aerial vehicle comprising: a ground station, a ground station energy system, a spool coupled to the ground station energy system at a rotating joint, a tether that is wound about the spool, wherein a first end of the tether is coupled to the rotating joint, a tension control motor coupled to both the spool and the ground station energy system, an unmanned aerial vehicle coupled to a second end of the tether, a UAV energy system, a fluid that moves throughout the tether continuous energy supply system, a tension control system that receives and transmits signals from a plurality of sensors contained within the tether continuous energy supply system, and a distributed controls system that receives and transmits signals from the plurality of sensors contained within the tether continuous energy supply system.

A system and process for unwinding materials in forming absorbent articles is described. The system includes an unwind device in association with a festoon. The festoon is for accumulating a determined length of material. The amount of material contained in the festoon is increased or decreased depending upon the rate at which a roll of material is unwound in relation to the rate at which the first material is fed into a downstream process. In order to minimize the capacity of the festoon and in order to minimize tension swings in the festoon, the festoon includes a plurality of drive devices associated with selected guide rolls contained in the festoon. The drive devices can accelerate and/or decelerate the guide rolls in response to rate increases or decreases occurring at the unwind device in relation to the downstream process speed. In one embodiment, each of the guide rolls is controlled independently of the remaining guide rolls in the festoon.

The invention discloses a method for continuously manufacturing 3-CCM (three Catalyst Coated Membranes) of a fuel cell. The method is characterized by comprising the following step of: under a condition that a protective membrane is adhered on one side of a proton exchange membrane, compositing a catalyst on the other side of the proton exchange membrane by utilizing a process manner, such as a direct coating manner, a printing manner, an indirect coating manner, a spray coating manner, a slit extrusion manner and a physicochemical deposition manner. The method for continuously manufacturing the 3-CCM of the fuel cell, disclosed by the invention, has the advantages that: (1) coil-to-coil easy continuous batch manufacturing can be realized; (2) the size precision is better and composite defects are fewer in the manufacturing procedure because the proton exchange membrane adhered with the protective membrane has excellent size stability in a compositing process of a catalyst layer and the proton exchange membrane; and (3) the manufacturing of the 3-CCM of the fuel cell with slotted catalyst layer can be continuously realized. When the 3-CCM are manufactured by utilizing the method for continuously manufacturing the 3-CCM of the fuel cell, disclosed by the invention, batch production is easier, and the yield is higher at the same time.

The invention comprises an asymmetric damping tensioner system for belt drives on an engine. A belt is connected between a driver pulley on a crankshaft and any number of driven pulleys. Each drive pulley is connected to an accessory such as an alternator, power steering pump, compressor or the like. The tensioner is placed anywhere before the first component of significant effective inertia, in the belt movement direction. A biasing member in the tentioner is used to maintain a tention in the belt. The tensioner further comprises a damping mechanism to damp belt vibrations caused by the operation of the engine. Tensioner damping friction is unequal or asymmetric, depending upon the direction of movement of the tentioner arm. During acceleration the damping friction of the tentioner in the unloading direction is significantly lower than the damping friction in the opposite, or loading direction, as is the case during deceleration. Lower damping friction during acceleration allows the tensioner arm to quickly adjust to the increase in belt length caused by acceleration. Higher damping friction during deceleration prevents the tensioner arm from being moved too far in the loading direction thereby causing slipping and noise. Asymmetric damping also significantly diminishes overall vibration in the belt during all phases of operation.

A device and method for the manufacturing of a pack including at least one article. The device includes a strapper for strapping a strip around the at least one article. The strapping is strapped around the outside of the article horizontally and/or vertically and/or cross-wise. A device generates a definable tensioning force of the strapping. A detector for the detection of properties of the article(s) is coupled and/or effectively connected to the device for generating a definable tensioning force of the strapping.

A regulation and/or control method for a strapping device is also provided. Recorded properties of the articles to be wrapped and/or of the strapping material to be used are used as control values for the tensioning force and/or back tensioning force.

The invention discloses a subway tunnel construction railcar facilitating the realization of regular cable laying. The railcar includes a railcar body provided with a pay-off arm. The railcar also includes a cable restraint device installed on the pay-off arm. The cable restraint device includes a support, a bracket, a cable guide and a binding machine. The support is fixed on the pay-off arm, andthe bracket can be rotationally connected to the support. The railcar also includes a locking piece for fixing the bracket relative to the support. The cable guide and the binding machine are fixedlyinstalled on the bracket, and the cable input end of the cable guide is connected with the cable input end of the binding machine. By adopting the structure design of the railcar, multiple stands ofcables can be laid synchronously, and regular cable wiring can be obtained on the cable bracket.

The invention discloses a uniform drying mechanism of a coating oven. The uniform drying mechanism of the coating oven comprises an oven body, an upper air chamber, a lower air chamber and an oven static pressure chamber body, wherein the upper air chamber and the lower air chamber are arranged in the oven body; and the oven static pressure chamber body is arranged outside the oven body and respectively communicates with the upper air chamber and the lower air chamber. According to the uniform drying mechanism of the coating oven provided by the invention, through the primary steady flow air equalization of an oven static pressure chamber and the secondary steady flow air equalization of the upper air chamber and the lower air chamber, hot air blown out of the upper air chamber and the lower air chamber can evenly and rapidly dry two faces of a pole piece, so that the pole piece is ensured to be evenly heated; and the uniform drying mechanism of the coating oven is simple in structure,convenient to operate and reliable in operation.

The invention discloses a continuous annealing line gear coupling fault detection device, system and method, and relates to the field of continuous annealing production lines. The device comprises twoannular gratings with the same structure, and each annular grating is provided with a shading area and a light-transmitting area which are uniformly and alternately distributed around the axis of theannular grating; the device further comprises a photoelectric sensor which is provided with a light source transmitting end and a light source receiving end; the two annular gratings are coaxially matched and fixedly connected with a driving shaft and a driven shaft which are connected with the two ends of a gear coupling respectively, the shading area on one annular grating coincides with the light-transmitting area on the other annular grating in the axial direction, and the light source transmitting end and the light source receiving end are oppositely fixed to the outer sides of the two annular gratings. The system comprises a plurality of detection devices in one-to-one correspondence with gear couplings in a continuous annealing line, and a PLC control system, the method performs real-time remote monitoring on the continuous annealing line based on the system. According to the invention, the fault of the continuous annealing line gear coupling can be detected in time, the product quality is ensured, and the safety is high.

The invention discloses a fiber feeder used in automatic fiber coiler, composed of a fiber collector, a driver, a transmit box, a fiber discharge wheel, a support base, and a sliding table, wherein the support base is mounted on the sliding table, while the upper end is mounted with the transmit box, the driver is on the transmit box, while a motor and a speed reducer are mounted at the outer back of the transmit box, the accurate shaft of the driver is suspended at the outer front of the transmit box, which is mounted with the fiber discharge wheel, the fiber collector is at one side of the support base, vertically with the fiber discharge wheel. The invention can feed fiber in various automatic fiber coilers, and in the machine as fiber repeat coiler and fiber selector. The invention uses the accurate suspended shaft to vertically support the fiber discharge wheel to discharge fiber, and arranges the fiber collector under the wheel to collect the fiber output by the wheel into a fixed point to be moved out, thereby confirming the feeding direction consistence of the tension wheel and confirming the tension consistence in the fiber coiling process.

The invention relates to a preparation method of polyimide prepreg, and belongs to the technical field of prepreg preparation. The method comprises the steps that proper resin solution viscosity is firstly contained through resin solution pretreatment, after release paper is coated with resin glue liquid through a tape casting process, a fiber enhancement body is paved, a pressure roller is utilized for achieving dipping of resin to the fiber enhancement body, then redundant volatile matter is removed through drying, and finally membrane coating and rolling are carried out. According to the preparation method, the technical problem about efficient impregnation of a low-viscosity polyimide resin solution is effectively solved by adopting the dual-roller engagement tape casting process, batched and stable preparation of the polyimide prepreg is achieved, and a good foundation is laid for engineering popularization and application of the polyimide prepreg.

The invention relates to a process for sizing hard twisted yarns on a warping and sizing combination machine. The process combines a warping procedure and a sizing procedure into one. The process has the following technical points: (1) sizing process: dipping twice and pressing twice, putting slurry into a back slurry tank, holding yarns by a front slurry tank, sizing at a low temperature and keeping the slurry at the temperature of between 65 and 75 DEG C, wherein an out-of-box twist is 8' and a sizing coverage factor is 70 percent; and (2) slurry prescription, wherein 20 kilograms of Nanpi-8 and 1 kilogram of CS-58 are used and the slurry contains 10 percent of solids. The process has the advantages of shortening the process flow, improving the work efficiency and reducing the manpower and material investment; and besides, the process is mature and stable, guarantees the product quality, and reduces waste.

The present invention relates to the technical field of equipment design and manufacture of coal mine underground fully mechanized mining face, in particular to a telescopic machine tail self-adaptiveadjustment electro-hydraulic composite control system and method. A piston rod of the tensioning cylinder I and a piston rod of the tensioning cylinder II are connected with a telescopic machine tailframe, a travel sensor I and a travel sensor II are respectively arranged inside the piston rod of the tensioning cylinder I and inside the piston rod of the tensioning cylinder II, the travel sensorI and the travel sensor II are respectively connected with a PLC calculation control center through a travel signal transmission line I and a travel signal transmission line II, the tensioning cylinder I and the tensioning cylinder II are connected with a double-hydraulic-control one-way valve, a pressure sensor I and a pressure sensor II are respectively arranged on a pipeline which is connectedwith the tensioning cylinder I and the tensioning cylinder II and the double-hydraulic-control one-way valve, and the pressure sensor I and the pressure sensor II are respectively connected with thePLC calculation control center through a pressure signal transmission line I and a pressure signal transmission line II. The system and method is safe and reliable, has a simple mechanism, and adoptsmicrocomputer control and information feedback.

The invention discloses a tension adjusting device for traction of a transmission belt. The device comprises a first supporting rack and a second supporting rack, wherein a butt joint rack is arrangedbetween the first supporting rack and the second supporting rack, a first supporting seat is arranged on the end part of the first supporting rack, a second supporting seat is arranged on the end part of the second supporting rack, and a belt wheel is arranged between the second supporting seat and the second supporting rack; and a tensioning mechanism is arranged between the first supporting rack and the second supporting rack and comprises a tensioning roller, the tensioning roller is arranged on an adjusting plate, a fixed shaft is arranged at the bottom of the adjusting plate, the fixed shaft is mounted between the first supporting rack and the second supporting rack, a positioning shaft is arranged between the first supporting rack and the second supporting rack, an insertion shaft is arranged on the positioning shaft, and the upper end of the insertion shaft penetrates through the adjusting plate. According to the tension adjusting device disclosed by the invention, the tensioning roller can be moved to be finely adjusted conveniently, so that tension of the transmission belt is controlled conveniently.

The invention discloses a tensioning device for a transmission belt transmission mechanism of a paper feeder, which comprises a fixed plate; the fixed plate is arranged on a base; the outer wall of the fixed plate is provided with adjustment rollers; A tension piece is provided between the rollers, and a bending portion is provided in the middle of the tension piece; the tension piece passes between the limit blocks; the outer wall of the fixed plate is provided with a cylinder, and the cylinder is provided with a telescopic shaft, and the telescopic shaft A moving block is arranged at the end of the roller, and the moving block is arranged between the adjusting roller and the limit block. The invention can control the tension sheet to control the tension of the transmission belt, which facilitates the flexible adjustment of the tension of the transmission belt on the paper feeder.

A packaging machine comprises a conveying device for advancing a web along a web advancement path at least to a tube forming station where the web is formed into a tube and for advancing the tube along a tube advancement path, a tube forming and sealing device configured to form and to longitudinally seal the tube, a tensioning device upstream of the tube forming station and configured to control the tension of the tube and a control unit configured to control packaging machine operation. The tensioning device comprises a main drive roller rotatable around a main rotation axis and a main drive motor configured to actuate rotation of the main drive roller around the main rotation axis. The control unit is configured to control the main drive motor such that angular speed and/or angular acceleration of the main drive roller is cyclically varied to control the tension of the tube.

The invention refers to a path breaking and pioneering effort to art a Weft Gripping mechanism for use on shuttle-less weaving machines. There is no such or similar device in existence today and the need for such a mechanism arises from the key points of disadvantages of the existing systems. With the advent of the Weft Gripping mechanism, the rubbing action between the weft insertion media and boundary selvedge threads is totally eliminated and so will be the breakages arising due to the rubbing. It not only facilitates precision timing of positive grip but also improves the gripping force exerted on the weft yarn and brings about a better tension control of the weft thread, which is known to be the key element for a better fabric appearance. The novel weft grip mechanism allows a more precision timing setting of weft grip, which in turn means exact or optimum weft protruding length, which obviously means lesser wastage of precious weft yarns.