34results about How to "Reduce wrap angle" patented technology

The invention relates to a lens system which is applicable to an LED street lamp and is matched with an LED illuminant for use to form light distribution with multiple Light beam angles and light intensities. A plane of light incidence of a lens in the system being close to the LED illuminant is a compound curved surface of an aspherical concave surface, and a light-emitting surface is a compound curved surface of an aspherical convex surface; the shapes of the incident surface and the emitting surface are determined by the luminescent properties of the LED illuminant and the requirement of the emergent ray; after the light ray emitted by the LED illuminant is refracted by the lens, facula formed on the irradiation surface within a certain distance has the characteristics of being comparatively long in the distance covered by the facula along one direction being vertical to the axes of the LED illuminant, being comparatively shorter in the distance covered by the facula along another direction being vertical to the direction, being symmetrical in the shapes of the faculas correspondingly to the axes of the LED illuminant, and taking on the distribution which is similar to rectangle. Similar plane isolux distribution curve shape as well as completely different maximum light intensity values of the light beam and half peak value light intensity light beam wrap angles can be obtained by the LED illuminant through different lenses, so that the lens system is especially suitable for the LED light fittings having the requirement of rectangle illumination scope.

The invention relates to a wallpaper printing system and belongs to the technical field of printing machines. The wallpaper printing system comprises a preheating mechanism, an embossing mechanism, a cooling mechanism, a tension mechanism, a winding mechanism and a machine frame. The preheating mechanism comprises a preheating cover and a heating roller, the preheating cover is arranged on a working surface of the heating roller, the embossing mechanism comprises a press roller and an embossing roller, and the press roller and the embossing roller are parallelly arranged and located on a discharging port of the preheating mechanism. Hot oil single-side inflow and outflow are adopted according to the preheating mechanism for the wallpaper printing system, the number of components in heat exchange with hot oil is reduced, and heat efficiency is improved; according to the preheating mechanism for the wallpaper printing system, an oil guide sleeve is adopted, the area of the hot oil in the heating roller is reduced, the circulation speed of the hot oil is accelerated, and the temperature of a roller can be kept constant to the largest extent.

The invention relates to a conveying belt driving system mounted on an internal combustion engine which is provided with a reversible generator or a starting motor/generator, in particular to belt tensioning equipment of a hybrid electric vehicle. The belt tensioning equipment of the hybrid electric vehicle comprises a supporting disc, a first tensioning machine and a second tensioning machine, wherein the supporting disc is mounted at the front end of the starting motor/generator; the first tensioning machine and the second tensioning machine are mounted on the supporting disc; the two tensioning machines are similar in structure and each comprises a tensioning machine belt wheel and a tensioning arm; each tensioning machine belt wheel is mounted at one end of each tensioning arm; a pivot is arranged at the other end of each tensioning arm; each tensioning arm rotates around each pivot; each pivot is articulated with a shell; each shell and each tensioning machine belt wheel are positioned at the same side surface of each tensioning arm; a stopping device is arranged on each shell; each tensioning arm is provided with a check block matched with each stopping device.

The invention discloses a great-circle vertical annular embedded scraper transporter comprising a driving device, the driving device is connected with a head wheel through a driving mechanism, a headpart, a tail part, a deformation transition section, an idle load vertical section, an idle load bending section, a feeding bending section, a loading bending section, a loading vertical section and an upper revolving section are sequentially connected into the shape of a flat loop, and a great-circle section part is adopted for replacing a horizontal linear section, thereby shortening the transportation length, reducing the occupied space, simplifying the structure and facilitating installation. The great-circle vertical annular embedded scraper transporter is suitable for transporting vertical lifting materials limited by spatial positions.

The invention relates to a steel wire rope driving mechanism for optical inspection outside a material cabin and an exposure platform. The steel wire rope driving mechanism comprises a support; a guide rail, mounted on one side of the support; a steel wire rope tightening device, mounted on the other side of the support; a driving device, installed at the bottom of one side of the support, and thedriving end of the driving device being connected with a driving steel wire rope winding wheel; a steel wire rope idle wheel, mounted at the top of one side of the support; a steel wire rope, one endof the steel wire rope being connected to the driving steel wire rope winding wheel, and the other end of the steel wire rope being connected to the steel wire rope tightening device after being wound around the steel wire rope idle wheel; and a bearing plate used for mounting an optical inspection module, mounted on the guide rail in a sliding manner and connected to the steel wire rope. The invention provides a moving mechanism adapting to the space environment, the weight is reduced to the maximum extent, and the size is reduced. Meanwhile, the moving mechanism is convenient to install andoperate on the ground, reliability is high, the failure rate is small, uplink resources can be saved, and cost is saved.

The invention provides a wire transmission structure, a surgical instrument and a surgical robot. The wire transmission structure comprises a base, a first driving shaft, a second driving shaft, a third driving shaft, a first traction body group, a second traction body group, a wobble wheel, a third guide part and a fourth guide part, wherein the base is provided with a symmetric surface; and each traction body group comprises two traction bodies connected to one driving shaft, and the two traction bodies corresponding to the traction bodies can be driven to move in opposite directions through rotation of the driving shafts, so the traction bodies are used for driving one joint of an instrument tail end assembly to move respectively. Furthermore, the first traction body group and the second traction body group are respectively used as a whole and can move in opposite directions under the action of two guide pieces on the wobble wheel, so a third joint of the instrument tail end assembly is driven to move. Therefore, the three joints of the instrument tail end assembly are driven by the four traction bodies to move; and a transmission structure is simple, occupied space is small, and transmission efficiency can be improved.

The invention relates to a tensioner of the spinning machine lower leather collar. The middle roller and the lower pin are set on the middle roller sliding seat which is set on the roller seat. The tension frame is connected with the supporting rod by the reed. A long hole is set on the reinforced rib in roller seat, which is set with the tension rod installing plate which is set on the roller seat through the bolt. The installing plate is set with the tension frame, the middle roller through the tension frame supporting rod which is connected with the lower pin through the lower leather collar. The tension frame can be adjusted in the 45: angle line to decrease the probability of the lower leather collar crushed between the lower pin and middle roller.

The invention relates to a fiber manufacturing method which comprises the following steps: a master batch melt and a polymer support section melt are mixed and are cooled into a high-speed spinning pre-oriented embryo fiber after spinning, and then oiling is carried out; the high-speed spinning pre-oriented embryo fiber after oiling is made into a draw texturing silk fiber by adopting an intra-drawing heating fast-twist method, and then is oiled. The silver content of the fiber of the invention can reach 3-10 percent, the sterilizing rate is high, the ultraviolet blocking rate is high, the efficacy is lasting and safe, and no toxic or side effects exist; the fiber spinnability is good, and the indexes such as the fiber size, etc. accord with the first order standards of the national fiber; the water absorbability, the air permeability, the dying uniformity and the electric conductivity of the fiber are greatly improved, thereby increasing the drapability and the comfortableness of the fiber fabrics.

The invention discloses a tobacco leaf stem removing machine, relates to the technical field of tobacco leaf processing, and aims at solving the problem of inaccurate stem removing in the mechanical tobacco leaf stem removing process in the prior art. The machine comprises a stem removing machine, the stem removing machine comprises a rack, a conveying belt, a power device used for driving, a tensioning system, a cutter device and a material roller, the outer circumference of the conveying belt comprises a material winding part, the material winding part winds the material roller in the shapeof an opened ring, the material winding part and the material roller form a storage part, the storage part is provided with a feeding port, the cutter device is arranged outside the feeding port, thetensioning system comprises a tensioning wheel, the tensioning wheel is connected with an adjusting mechanism, and the adjusting mechanism is used for adjusting the tensioning level. The tobacco leafstem removing machine has the advantages that stem removing is accurate and safe.

The invention belongs to the field of elliptical machines, and particularly relates to a double-effect elliptical machine which comprises a machine base and a pedal arranged on the machine base, a fixing base is arranged on the machine base, a transmission wheel is rotationally arranged on the fixing base, and a connecting frame connected with the pedal is arranged on the transmission wheel; a brake wheel is arranged on the transmission wheel, the brake wheel and the transmission wheel are coaxially arranged and synchronously rotate, a brake piece matched with the brake wheel and an adjusting device used for adjusting the brake piece are arranged on the machine base, and the adjusting device controls the brake piece to abut against the brake wheel and hinders the brake wheel from rotating; a motor and a controller for controlling starting of the motor are further arranged on the machine base, the transmission wheel is connected with an output shaft of the motor through a transmission belt, when the motor is started, the motor drives the pedals to move through the transmission belt and the transmission wheel and provides resistance for the pedals, and the double-effect elliptical machine is good in exercise effect and convenient to adjust.

A full-lift electric submersible pump comprises a centrifugal pump with low specific speed and a submersible motor. A connecting rack between the motor and the pump serves as not only a connector for the motor and the pump but an inlet of the pump, rib plates of the connecting rack are in oblique linear arrangement rather than in radial arrangement, cross points of center lines of the rib plates and the inlet circumference of an impeller serve as vertex points, and the included angle between each of the center lines of the rib plates and the radial line of each of the vertex points is not larger than 10 degrees. The full-lift electric submersible pump with low specific speed has no over-load characteristic, can be used efficiently and reliably on working conditions of high lift and low flow rate, and can also be used in a safe manner without overload on the working conditions of low lift and high flow rate. In addition, the impeller with low specific speed of the full-lift electric submersible pump is quite easy to cast, and the centrifugal pump is high in efficiency.

The invention discloses a preparation process of an aluminum foil composite material. The process comprises the following specific steps: feeding and intensively stirring activated carbon powder, silver powder and water absorption powder to obtain mixed powder; and adding the mixed powder into a polyvinyl alcohol solution, and stirring in a water bath. According to the preparation process of the aluminum foil composite material, a mixed layer capable of adsorbing different colors and peculiar smells and having a sterilization effect can be formed on the surface of aluminum foil, food can be better packaged, the use effect is better, the aluminum foil is not prone to being broken and pinholes are not prone to being formed when the prepared aluminum foil composite material is folded, in addition, the strength of the aluminum foil composite material is improved, so that the aluminum foil composite material is not prone to damage, a diameter of a pressing roller is always smaller than that of a film roll during rolling, a wrap angle formed by the prepared aluminum foil composite material film and the pressing roller is reduced, rolled air is less, the film roll is neat, the excellent barrier property can be kept, and the use effect is better.

The invention provides a wire transmission structure, a surgical instrument and a surgical robot. The wire transmission structure includes a base, a first drive shaft, a second drive shaft, a third drive shaft, a first traction body group, a second traction body group, a A guide piece, a second guide piece, a third guide piece and a fourth guide piece; the base has a reference plane; each traction body group includes two traction bodies connected to a drive shaft, through which the drive shaft The rotation of the device can drive the corresponding two traction bodies to move in opposite directions, so as to drive a joint movement of the end assembly of the instrument respectively. Furthermore, the first traction body group and the second traction body group are taken as a whole, and through the action of the first guide member and the second guide member, they can drive the movement of the third joint of the end assembly of the instrument. Thus, the movement of the three joints of the end assembly of the instrument is driven by the four traction bodies, the transmission structure is simple, the space occupied is small, and the transmission efficiency is improved.

The invention discloses a self-balancing winding device for enameled wires. The device comprises a wire feeding roller (1), a wire guiding roller (2) and a winding shaft (3), wherein the wire guiding roller (2) is arranged on a vertical moving support seat (10); the wire feeding roller (1) is arranged on a horizontal moving support seat (4) above the wire guiding roller (2); the winding shaft (3) is arranged on a base (5) provided with a driving motor; a horizontal tray (7) is mounted on the base (5) by the aid of a plane bearing (6); an opening for accommodating the winding shaft (3) is formed in the center of the horizontal tray (7); vertical limiting fins (8) are arranged on the winding shaft (3); and piezoelectric ceramic pieces (9) are arranged on side walls of the limiting fins (8). The device can detect the tension exerted on the enameled wires in real time while winding the enameled wires, so that the tension can be adjusted automatically, and the quality of the wound enameled wires is guaranteed.