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233results about How to "Flexible adjustment" patented technology

Hob cutter with a coating and method for coating hob cutter

The invention relates to a hob cutter tool with a coating, wherein the coating is produced by a physical vapor deposition method, in which in a coating chamber in an atmosphere containing nitrogen, an arc discharge is generated in each case between at least one anode and at least one pure Al cathode on the one hand, and at least one pure Cr cathode on the other hand, and in this way, Al and Cr are vaporized from the cathode, in which the hob cutter tool to be coated is rotated in the coating chamber, wherein the tool is subsequently guided past the at least two cathodes, and in which the vaporized Al and Cr is deposited in atomic or ionized form together with nitrogen from the atmosphere containing nitrogen onto the hob cutter tool led rotating past the cathodes. The coating has a multiplicity of layers, composed of (AlCr)-nitride, arranged on top of each other, wherein the multiplicity of layers is formed from two layer types differing with respect to their Al:Cr ratio, wherein a first layer type has an Al:Cr ratio in the range of 55:45 to 65:35, and a second layer type has an Al:Cr ratio in the range of 70:30 to 74:26, and wherein the two layer types alternate with each other in the coating, wherein each of the layers, in turn is formed from a multiplicity of nanolayers arranged on top of each other, and wherein the coating is connected to the tool base body using a bonding layer. Furthermore, the invention relates to a method for recoating such a hob cutter tool.
Owner:FETTE +1

Multifunctional cleaning mechanism for city cleaning

The invention discloses a multifunctional cleaning mechanism for city cleaning. The multifunctional cleaning mechanism comprises a support, a horizontal cleaning brush, and two side cleaning brushes, wherein the support is provided with a connecting seat which is connected with a manipulator, the horizontal cleaning brush comprises a horizontal brush holder arranged at the front end of the support, a brush plate rotating shaft of which the upper end is arranged on the horizontal brush holder, and driven to rotate by a brush plate rotating mechanism, a horizontal brush plate arranged at the lower end of the brush plate rotating shaft in a sleeving manner, and horizontal brush bristles arranged at the bottom surface of the horizontal brush plate; the two side cleaning brushes are symmetrically arranged on the left side and the right side of the support, and each side cleaning brush comprises a side brush rack of which one end is hinged to the support and driven to swing by a swing mechanism, a side brush shaft arranged on the side brush rack and driven to rotate by a brush shaft rotating mechanism, and side brush bristles, and the side brush shaft is provided with multiple rows of the side brush bristles arranged uniformly in the circumferential direction. The multifunctional cleaning mechanism disclosed by the invention can be applied to cleaning guardrails, roads, walls and billboards, and are diverse in functions and flexible to adjust.
Owner:DONGFENG LIUZHOU MOTOR

Electric power plant cooling system for enhancing cooling efficiency by utilizing residual heat refrigeration manner

The invention relates to a power plant cooling system which improves the cooling efficiency by a residual heat refrigeration way, in particular to a cooling system which is used for the power plant, carries out the refrigeration by the residual heat of a steam turbine and utilizes the prepared cold water to cool the circular cooling water of the steam turbine further. The cooling system comprises a steam condensed water circulation consisting of a steam turbine, a steam condenser, a condensed water circulation pump and a combustion boiler, and a steam cooled water circulation consisting of a steam condenser, a cooling tower and a cooled water circulation pump. The cooling system is characterized in that a lithium bromide refrigeration unit is added; a high pressure generator of the lithium bromide refrigeration unit is arranged between the steam turbine and the steam condenser so as to lead the steam to become the heat source of the unit; the unit also comprises a refrigerant water tank which can store the cold energy; furthermore, the refrigerant water tank is connected with all air conditioners of the central air conditioning by pipelines; and the refrigerant water tank is arranged between the steam condenser and the cooling water circulation pump so that the refrigerant water is used for supplying the coldness to the central air conditioning or further cooling the circular cooling water of the steam turbine. The cooling system solves the problem that the residual heat of the power plant is cooled and wasted and has the advantages of high cooling efficiency, saving energy, being capable of supplying the cold source for the central air conditioning and the like.
Owner:ZHEJIANG GONGSHANG UNIVERSITY

Calculation method for cutter torque of composite shield machine in rock and soil mixing geology tunneling

ActiveCN108241780AFlexible adjustmentCalculations are reliableGeometric CADSpecial data processing applicationsShield machineRock breaking
The invention discloses a calculation method for the cutter torque of a composite soil pressure balanced shield machine in rock and soil mixing geology tunneling. The calculation method comprises thefollowing steps that: independently calculating the following torque: torque generated by hobbing cutter rock breaking, frictional resistance torque generated by the tunneling extrusion of a contact part of a cutter panel and a soft soil layer, frictional resistance torque generated by the covering burial depth of the contact part of the cutter panel and the soft soil layer, the stratum resistancetorque of a cutter cutting soil body, frictional resistance torque between the side surface of the cutter and soft soil, frictional resistance torque T6 between the side surface of the cutter and rock and the stirring resistance torque of a stirring arm in a soil cabin; and calculating the tunneling cutter torque. By use of the calculation method, the cutter torque of the composite soil pressurebalanced shield machine in the tunneling process of the rock and soil mixing geology can be quickly and accurately calculated, and a calculation result is accurate and reliable. In addition, torque parameters can be flexibly regulated according to the change of a geological condition and tunneling speed at any time, and a reliable data basis is provided for setting and regulating the cutter torqueparameters in real time in the design and construction process of the dynamical system of the composite soil pressure balanced shield machine equipment.
Owner:TIANJIN UNIV

Emergency return landing speed command set design method

The invention belongs to a field of flight control technology and discloses an emergency return landing speed command set design method. The method includes (1), constructing a grid of mass, rolling angle, airport height, height and speed parameters, calculating an attack angle, an elevator, a lift-drag ratio, a track angle and a submerge rate of constant speed gliding of an aircraft, determining the maximal lift-drag ratio rate and the idle gliding maximal available speed changing along with mass, rolling angle, airport height and height, dividing a speed range between the maximal lift-drag ratio rate and the idle gliding maximal available speed into N+1 parts, adding the maximal lift-drag ratio rate and the idle gliding maximal available speed for creating a N+2 grade speed command set, wherein the content of each grade of the speed command set includes the attack angle, the elevator, the lift-drag ratio, the track angle and the submerge rate corresponding to the speed of said grade; (3) recording the N+2 grade speed command set by the aircraft, and selecting an appropriate speed command set grade for execution according to the mass, the airport height, the height, the speed and the distance between the aircraft and the airport when emergency aircraft return landing is required.
Owner:FLIGHT AUTOMATIC CONTROL RES INST

Micro-motion stepless speed regulation grinding device for common big vertical lathe

The invention relates to a micro-motion stepless speed regulation grinding device for a common big vertical lathe, which comprises a two-dimensional regulation mechanism, a hand feeding mechanism, a lifting mechanism of a grinding head and a grinding head of an electric main shaft. The two-dimensional regulation mechanism connects a support body, a first connector, a second connector and a mounting plate of a guide rail sequentially by two pairs of swivel bearing pairs and one pair of dovetail pairs and realizes the two-dimensional regulation of the entire device; the hand feeding mechanism realizes microfeed by the transmission of the two pairs of gear pairs; the lifting mechanism of the grinding head drives one pair of gear pairs by a motor, and then the gear pairs push a lead screw thread pair with a linear guide rail, thereby realizing the up-and-down lifting of the mounting plate of the electric main shaft; and the grinding head of the electric main shaft is formed by sequentially connecting an electric main shaft seat, the electric main shaft, an Morse taper shank and a grinding wheel. The invention realizes that a grinding function is realized on the common big vertical lathe, the grinding range is 0 to 10000rpm, and the minimum feed amount of the hand feeding mechanism is 0.0005mm.
Owner:INST OF OPTICS & ELECTRONICS - CHINESE ACAD OF SCI

Reaction device for fluidized bed catalyst performance evaluation

The invention relates to a reaction device for fluidized bed catalyst performance evaluation, which mainly solves the problems that during the fluidized bed catalyst performance evaluation, the device form is single, and the purpose can not be flexibly regulated. The reaction device for the fluidized bed catalyst performance evaluation adopts the technical scheme that the reaction device mainly comprises a regenerator 4, a first reactor 10, a second reactor 15 and a lifting pipe 12, wherein the lower part of the regenerator 4 is connected with an inlet of a catalyst flow rate control valve 6, an outlet of the catalyst flow rate control valve 6 is connected with the first reactor 10, the lower part of the first reactor 10 is connected with an inlet of a catalyst flow rate control valve 13, an outlet of the catalyst flow rate control valve 13 is connected with the second reactor 15, the lower part of the second reactor 15 is connected with an inlet of a catalyst flow rate control valve 17, an outlet of the catalyst flow rate control valve 17 is connected with an inlet of the lifting pipe 12, and an outlet of the lifting pipe 12 is connected with the regenerator 4. The problems are perfectly solved, and the reaction device can be used in the fluidized bed catalyst evaluation.
Owner:CHINA PETROLEUM & CHEM CORP +1

Elevator traction wheel slipping amount detecting device and method

The invention discloses an elevator traction wheel slipping amount detecting device and method. The device comprises an elevator traction system, an image acquiring device, a wireless transmission device and a monitoring center; the elevator traction system comprises a traction wheel, a traction wheel motor, a steel wire rope with a scale mark and a control cabinet; the traction wheel motor is electrically connected with the traction wheel; the steel wire rope is placed in a rope groove of the traction wheel; the steel wire rope is matched with the rope groove of the traction wheel; the control cabinet is electrically connected with the traction wheel motor; the control cabinet is used for reading the revolution of the traction wheel motor; the image acquiring device is arranged above the traction wheel; the image acquiring device is used for acquiring a scale mark image of the steel wire rope; the wireless transmission device is connected with the image acquiring device and the control cabinet; and the wireless transmission device is used for transmitting the scale mark image acquired by the image acquiring device and the revolution of the traction wheel motor to the monitoring center. The device and method solve the problem that elevator maintaining personnel have danger in the measuring process.
Owner:HUZHOU CITY SPECIAL EQUIP INSPECTION INST +1

Vehicle rim cleaning device

The invention relates to a vehicle rim cleaning device which comprises a first motor, wherein a gear sleeves the shaft of the first motor, a rack is matched on the lower side of the gear, a swaying frame is connected to the left end of the rack in a hinged mode, a fixed rod is hinged in the middle of the swaying frame , a second motor is fixed on the right side of the swaying frame, a driving bevel gear sleeves the upper end of the second motor, a sleeve is arranged on the upper part of the swaying frame, a cleaning rod is fixed inside the sleeve, the right end of the cleaning rod is fixedly provided with a driven bevel gear matched with the driving bevel gear, a cleaning head sleeves the right end of the cleaning rod, and a bearing is arranged between the cleaning rod and the sleeve. The vehicle rim cleaning device can completely clean the back side surface, where a hydraulic gun cannot clean, of a rim, dust, oil or other foreign matters are prevented from accumulating on the back side surface of the rim, the dynamic balance when wheels drive at a high speed can be prevented from being influenced, the rusting of the back side surface of the rim can be prevented, the second motor driving the cleaning head to rotate is fixed on the swaying frame, and the cleaning head can rotate when swaying with the swaying frame.
Owner:芜湖赛德交通设备有限公司

Dual-rocker four-axis welding position changing machine and using method thereof

The invention relates to a dual-rocker four-shaft welding position changing machine and a using method thereof. The lower ends of two upper rockers are hinged to a rack, the upper portions of the upper rockers are hinged to an upper hydraulic cylinder, and the upper rockers can be driven by the upper hydraulic cylinder to rotate around upper rocker main shafts; the lower ends of two lower rockers are hinged to the rack, the upper portions of the lower rockers are hinged to a lower hydraulic cylinder, and the lower rockers can be driven by the hydraulic cylinder to rotate around lower rocker main shafts; the upper ends of the two upper rockers are hinged to the bottom of a rotating machine head, and the upper ends of the two lower rockers are hinged to the bottom of the rotating machine head; and a rotational chuck is arranged at the top of the rotating machine head. According to the dual-rocker four-shaft welding position changing machine and the using method, the working principle of a four-connecting-rod mechanism is adopted, an upper rocker mechanism and a lower rocker mechanism are controlled by the corresponding hydraulic cylinders to rotate, the rotating machine head is driven to achieve position changing with any height and angle, rotation of workpieces at any position can be further achieved through the rotating machine head, adjustment is flexible, and welding of the workpieces can be greatly facilitated; and through linkage of a control system and a welding robot, automatic position changing in the workpiece welding process can be achieved.
Owner:辽宁天利再造科技股份有限公司
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