492results about How to "Improve machine performance" patented technology

A wind power recovery device has a tower, a rotor arranged on the tower and including a plurality of blades rotatable under the action of wind, the rotor also having an axis for transmitting the rotation of the rotor to another apparatus, a wind channeling body provided with a series of walls which form channelings with a section which is progressively reduced from an entry side of the wind channeling body to an exit side of the channeling body toward the rotor to affect tangentially the blades of the rotor at a speed higher than at the entry side of the body, the wind channeling body having a side face, and a blind protecting the side face of the channeling body.

A variable air exhaust through flow area air inlet pressure control type adjusting device for a turbocharged engine belongs to the technical field of mechanical design and comprises an air compressor, an engine, a turbine, a volume cavity, a rotation body, a spring, a rotation rod, a rotation shaft and a rotation plate. The longitudinal sections of the volume cavity and the rotation body are both in arc shapes, the rotation plate is installed in an air exhaust pipe, the rotation plate and the rotation shaft are fixed together, the left wall of the rotation body is connected with the left wall of the volume cavity through the spring, and two ends of the connection pipe are respectively communicated with the right wall of the volume cavity and an air inlet pipe of the engine. When pressure in the air inlet pipe of the engine is high, the rotation body drives the rotation plate to rotate in a counterclockwise mode, pumping loss of the engine is small, and the whole performance is excellent. When pressure in the air inlet pipe of the engine is low, the rotation body drives the rotation plate to rotate in a clockwise mode, available energy in front of the turbine is more, air inlet pressure of the engine is high, and the whole performance is excellent. The variable air exhaust through flow area air inlet pressure control type adjusting device for the turbocharged engine is reasonable in design, simple in structure and suitable for a turbine single inlet turbocharged system.

A fabric for use by a papermaking machine, the fabric including a plurality of weft yarns, a plurality of warp yarns, and a woven fabric resulting from a repeating pattern of the weft yarns and warp yarns. Each of the weft yarn in the repeating pattern having a sequence of starting at a starting point then sequentially going over three adjacent warp yarns, under one warp yarn, over one warp yarn, under three warp yarns, over one warp yarn and under one warp yarn, the sequence then repeating.

The plow depth raiser for a tractor includes one raising oil cylinder for controlling the elevation of the suspension system, one plow depth controlling valve connected to the raising oil cylinder, one force feedback unit for measuring and acquiring the stress information of the pull rod in the suspension system, one position feedback unit for measuring and acquiring the rotation angle of the lift arm in the suspension system, one plow depth controller connected to the force feedback unit and the position feedback unit, and one operation unit connected to the plow depth controller, with the plow depth controller being connected also to the plow depth controlling valve. The present invention has raised plow depth controlling accuracy and high operation reliability of the hydraulic system.

The invention discloses a numerical control (NC) system based on a virtual host computer, the NC system comprising the virtual host computer arranged on a remote server, a local lower computer and a human-machine interactive device for human-machine interaction. The human-machine interactive device is used for providing a human-machine interactive input/output interface. The virtual host computer integrates a human-machine interactive module, a non-real-time/half-real-time task execution unit and a lower-computer control unit, and is used for receiving a NC machining instruction, processing the instruction to form a machine-tool control instruction through the non-real-time/half-real-time task execution unit, and transmitting the control data to the local lower computer through the lower-computer control unit by utilizing a network. The local lower computer controls a machine tool to execute real-time motion control and logic control. The NC system employs a new architecture formed by the upper computer and the lower computer by utilizing virtualization technology, and solves the restriction problems of data processing capability, HMI function expansion and remote machining of a conventional NC system.

A rotation control type pipeline reducing rate variable device belongs to the technical field of mechanical design and comprises an air compressor, an engine, an air exhaust pipe, a turbine, a volume cavity, a rotation body, a spring, a connection pipe, a rotation rod, a rotation shaft and a rotation plate. The longitudinal sections of the volume cavity and the rotation body are both in arc shapes, the rotation plate is installed in the air exhaust pipe, the rotation plate and the rotation shaft are fixed together, the left wall of the rotation body is connected with the left wall of the volume cavity through the spring, and two ends of the connection pipe are respectively communicated with the right wall of the volume cavity and the air exhaust pipe. When pressure in the air inlet pipe of the engine is high, the rotation body drives the rotation plate to rotate in a counterclockwise mode, pumping loss of the engine is small, and the whole performance is excellent. When pressure in the air inlet pipe of the engine is low, the rotation body drives the rotation plate to rotate in a clockwise mode, available energy in front of the turbine is more, air inlet pressure of the engine is high, and the whole performance is excellent. The rotation control type pipeline reducing rate variable device is reasonable in design, simple in structure and suitable for a turbine single inlet turbocharged system.

A CNC dual-spindle transmission device is installable on a CNC dual-spindle machining center to receive first and second spindles of the CNC dual-spindle machining center to mount thereto. The CNC dual-spindle machining center includes a base, a machining table movably mounted on the base, and a vertical column erected upright at a rear portion of the base. The CNC dual-spindle transmission device includes a linear rail assembly mounted to the vertical column, a first slide seat slidably mounted to the linear rail assembly and receiving the first spindle to mount thereto, a second slide seat extending across the first slide seat and slidably mounted to the linear rail assembly in a manner of being spaced from the first slide seat to receive the second spindle to mount thereto, and first and second power units mounted to the vertical column to respectively driven the first and second slide seats to move.

Spline seals are disposed in circumferentially registering slots of adjacent arcuate sealing segments disposed in grooves of the casing of a steam turbine about a rotor. The spline seals extend in the gap between the endfaces of the segments and minimize or preclude steam leakage past the endfaces. The spline seals may be oriented axially or inclined radially to minimize leakage paths in the radial inclined and axial directions, respectively. The spline seals are disposed in the slots which may be formed as part of original equipment manufacture or may be machined in segments with the spline seals provided as retrofits.

Nozzle segments mounting vanes are received in circumferentially extending, generally dovetail-shaped grooves in an outer casing of a steam turbine, the nozzle segments forming part of a stage with rotating buckets of the steam turbine. The inclined slashfaces of the adjoining bases of the nozzle segments are provided with circumferentially opening slots to receive spline seals. The spline seals preclude or minimize steam leakage flow past the gap between the adjoining nozzle segments thereby enhancing the steam flow through the partitions of the nozzles.

According to an embodiment of the present specification, a method for transmitting uplink data in a machine type communication (MTC) device is provided. The method may comprise the steps of: initially transmitting repetitive bundles of physical uplink shared channel (PUSCH) data including identical uplink data in a plurality of uplink subframes to a base station; receiving a hybrid automatic repeat request (HARQ) response signal with respect to the repetitive bundles of PUSCH; if the HARQ response signal is a negative-acknowledgement (NACK), determining the number of repetitions of the PUSCH including identical uplink data; and re-transmitting the PUSCH bundles repeatedly for the determined number of times on the plurality of uplink subframes to the base station.

The present invention relates to a reaper for grains, specially for the bean grains. More specifically, the present invention refers to technical and functional improvements specially developed and introduced which configures a bean reaper that is classified as a trailer to carry out two different operations, the first one of which is gathering various plants, such as bean plants, peanuts and other grains, plants which are previously plucked and aligned, whereas the second function of which is to perform a whole cleaning process by separating the grains (seeds) from the remaining unwanted parts.

The invention discloses a method for controlling the anti-freezing of the evaporator of an air conditioner. The method mainly comprises the steps as follows: the temperature of the pipe coil of the evaporator is collected by a singlechip (5); subsequently, according to the collected temperature, corresponding conversion and control to the rotation speed of the motor of an indoor machine, and the starting and stopping of a compressor (1) are carried out. The method for controlling the anti-freezing of the evaporator of the air conditioner can lead the air conditioner work under different environments and improve the performance of the whole machine and the satisfaction degree of the user.

A high temperature self-adapting air conditioner comprises a refrigerating circle which is composed by a compressor, a condenser, main capillary, an evaporator. The refrigerating circle is parallel connected by a subsidiary throttle sidecut which is composed by a filter, an unloading valve and subsidiary capillary. Due to the subsidiary throttle sidecut, upon the side condenser's pressure exceeds the safety limit, the unloading valve opens and the subsidiary sidecut got through; then the flux index of the capillary will be increased, refrigerant flux will be increased; then lower down the pressure of the condenser; then the compressor will be protected for a continuous running.

The invention relates to a foamed plastic environment-friendly recovery granulating machine set. A pulverizer comprises a feeding main body, a pulverizing roller which is arranged in the feeding main body, a screen mesh plate which is arranged below the pulverizing roller and a wind gathering discharge hopper which is connected with the feeding main body. A conveyer pipeline comprises a radial material loading pipeline consisting of a material loading blower and a pipeline, a tangential feeder which is connected with the radial material loading pipeline and a regular polygon feeding tank which is connected with the tangential feeder. A host machine comprises a primary compression extruding part and a secondary compression extruding part which is connected with the primary compression extruding part. The foamed plastic environment-friendly recovery granulating machine set adopts a closed circular material supply system, improves the environment-friendly regeneration utilization rate, reduces the recovery cost, saves the energy loss, and reduces the recovery secondary pollution.

A cemented carbide ball end mill comprises a cutting portion with a semi-spherical ball portion at a tip thereof. The cutting edge portion has a cutting edge rake face and a chip evacuating flute at the ball portion. An angle formed by a straight line connecting a vertex of the ball portion, where an intersection line passes through, and another end of the intersection line with respect to the central axis, is from 30° to 50°. Further, and angle formed by the rake face and the chip evacuating flute is from 100° to 150°, and a width of the chip evacuating flute is 0.5 to 5 times as large as a radius of the ball portion.

The invention discloses a conical slit-type hot end heat exchanger of a coaxial pulse tube refrigerator and a manufacturing method. The heat exchanger structurally consists of a hot end flange, a conical slit and a hot end plug, wherein the conical slit is inserted into the hot end flange in a tight fit way, the radius of a circle of contact on the top of a cone frustum is equal to the radius of a cold accumulator and the radius of the bottom of the cone frustum is equal to the radius of the hot end plug. The hot end plug and the hot end flange not only can be connected through bolts to form a detachable split-type hot end heat exchanger, but also can be hermetically welded to form an integrated hot end radiator. The conical slit-type hot end heat exchanger has the advantages that the structure is simple, compact and high-efficiency, the hot end radiating capacity of the refrigerator can be exerted to the utmost extent and the hot end pressure ratio of the pulse tube refrigerator is increased at the same time. The structure can intensively realize the major functions of a high-efficiency hot end heat exchanger, a hot end gas flow guide device of the pulse tube refrigerator and a hot end gas even distributor of the cold accumulator, and can improve the performance of the entire pulse tube refrigerator to a great extent.

The invention discloses an effective wind speed obtaining method of a wind generating set based on a High-Gain observer. The effective wind speed obtaining method includes the following steps that firstly, a sensor is used for collecting a rotor speed omega r of a wind wheel of the wind generating set and data are filter, sorted and preprocessed, high-frequency disturbance from a wind power plant circumstance and a wind generating set tower body is eliminated, mechanical and electrical features of the wind generating set are combined to set up the High-Gain observer and finally, an effective wind speed estimation value is obtained through a Cp secondary surface fitting polynomial function. The effective wind speed estimation value serves as the important reference input of a wind generating set controlling system, is applied to torque control, pitch angle control and yaw control of the wind generating set and also can be applied to analysis of reliability and economic benefits of a wind power station and estimation and analysis on influences on a power system by the wind power station which accesses to the power grid. The effective wind speed obtaining method of the wind generating set based on the High-Gain observer has great scientific significance and application value in planning and design of grid connection of the wind power station, analysis and calculation on safety and stability of the power grid including wind power and configuration and setting of a protection and safety automatic device.

The invention discloses an intelligent industrial analyzer, comprising at least a combustion device, at least a sample weighing device, and at least a delivering sampling device for transferring a crucible between the combustion device and the sample weighing device, wherein the delivering sampling device comprises a manipulator for capturing the crucible, a elevating mechanism for driving the manipulator to elevate, and a rotary mechanism for driving the manipulator to rotate. According to the invention, the transfer of the crucible between the combustion device and the delivering sampling device is realized by the delivering sampling device; the up-and-down motion of the manipulator is realized by the elevating mechanism of the delivering sampling device, the rotation of the manipulator around any plane is realized by the rotary mechanism of the delivering sampling device, thus the manipulator can be guaranteed to deliver and sample in X, Y and Z axis at will, and the whole machine functions and efficiency of the industrial analyzer are greatly raised.

In a laser beam machining method and a laser beam machining apparatus, a higher improvement in machining ability is required for grooving and cutting of a semiconducting material or a ceramic material. In order to meet this requirement, the invention provides a laser beam machining apparatus and a laser beam machining method in which an ultraviolet laser beam is irradiated in pulses onto a workpiece made of an inorganic material to groove or cut the workpiece. In this laser beam machining apparatus and laser beam machining method, as the scanning speed of the ultraviolet laser beam is higher, or as the machining depth of the grooving or the cutting is greater, the pulse width of the ultraviolet laser beam is set to be greater. This can significantly improve the machining ability compared with a case where the average power is increased.

The invention belongs to the technical field of assembly and fastening, and provides a bolt pre-tightening force prediction method based on machine learning. The method comprises the following steps of data acquisition, data-based problem analysis, data averaging processing, multiple regression modeling, model parameter identification, statistic inspection and model verification and analysis, wherein tightening torque, a tightening angle and a nut end surface friction coefficient are used as input parameters, and the pre-tightening force is used as a prediction value. According to the method,the pre-tightening force can be effectively controlled through prediction, and a foundation is laid for obtaining good machine performance. The metod can be widely popularized in the technical field of assembly and fastening.

The invention discloses an integrated slit cold head of a U-shaped pulse tube refrigerating machine and a manufacturing method. The cold head comprises two parts of a top cover and a lower flange, wherein two cylindrical lug bosses protrude below a big lug boss of the top cover, outer diameters of the two cylindrical lug bosses are respectively equal to inner diameters of a cold regenerator and a pulse tube; the two lug bosses integrally cut and penetrate through a slit in parallel horizontally and uniformly; through insertion holes matched with the cylindrical lug bosses of the top cover are arranged on the lower flange, a sealing groove and a location groove matched with the big lug boss of the top cover are cut on the upper surface of the lower flange, the lower flange, the cold regenerator and the pulse tube are hermetically welded to form an assembly; the top cover and the lower flange not only can be connected by bolts to form a detachable split cold head, but also can be hermetically welded to form an integrated cold head. In the invention, the main functions of three parts of an efficient cold end heat exchanger, a pulse tube cold end gas director and a cold regenerator cold end gas distributor can be intensively realized in an integrated slit cold head structure, the overall performance of the U-shaped pulse tube refrigerating machine is enhanced.