31results about How to "Solve brake problems" patented technology

The invention discloses a full-automatic multi-level linkage binding machine and a control method thereof. The technical problems that working procedures of an existing binding machine are linked up incoherently and the working efficiency is low due to semi-automation are solved. The following technical scheme is adopted: a linkage telescopic shifting type electroconductive rubber component, a linkage type cutting mechanism, a linkage telescopic type riveting mechanism and the working position switching of a linkage type working position switching mechanism are all controlled by lifting of an upper pressing mechanism in the vertical direction; a lower pressing mechanism controls a linkage type lower pressing braking and releasing mechanism through a pressing and driving mechanism so as to separate from or reunite with a workbench. The key to the invention is as follows: a plurality of linkage mechanisms are arranged in the binding machine, besides, orderly work is achieved through a control circuit with management software; and the device space is greatly reduced, and the working efficiency is improved.

The invention relates to the field of transmission control, in particular to an AMT intermediate shaft brake pneumatic control method based on a dual PWM valve. The method comprises the following steps of determining intermediate shaft reduction speed difference control target value; determining intermediate shaft reduction speed rate control target value; determining intermediate shaft reductionspeed rate control tolerance value; determining action time value for preliminarily building brake capacity; starting a brake command, and executing a preliminary brake capacity building stage; executing an intermediate shaft brake capacity fine adjustment stage, and carrying out intermediate shaft brake capacity fine adjustment; decontrolling the intermediate shaft brake capacity; judging whetherthe current intermediate shaft rotating speed is not higher than the intermediate shaft rotating speed control target value or not, and if not, finishing the intermediate shaft brake control process,and finishing intermediate shaft brake; and if the current intermediate shaft rotating speed is higher than the intermediate shaft rotating speed control target value, executing the intermediate shaft reduction speed micro control stage until the intermediate shaft brake is finished. The problems of over brake and in-advance decontrolling in the prior art can be solved.

The invention discloses braking equipment for a generator, which comprises a controller and a braking system, wherein the controller is used for monitoring the working state of a power converter for transforming the original electrical energy output by the generator into the electrical energy meeting the quality requirements of power transmission and distribution for an electrical network. The braking equipment for the generator is characterized in that when the power converter normally works, the braking system is controlled by the controller to cut off a braking resistor; and when the power converter is abnormal, the braking system is controlled by the controller to switch in the braking resistor and disconnect the power converter and the generator.

The invention belongs to the technical field of mechanical engineering and discloses an installing technology of a brake pulley of a double tilting angle compensation coupling; the invention essentially comprises the coupling and the brake pulley, the brake pulley is installed on a hub which is arranged on a half coupling at one side of two couplings with double tilting angle compensation function. When the brake pulley brakes, the technology can ensure that the radial compensation function of the coupling is not restricted. The technology has reasonable mechanism principle and simple processing, can greatly improve the stressing state of the equipment coupled, the coupling and a brake, prolong the service life of equipment and improve the reliability as well, thus the new installing technology of the brake pulley on the coupling has high popularization value.

The invention provides a braking device for a permanent-magnet direct-driving roller. The braking device for the permanent-magnet direct-driving roller comprises large gears fixedly installed on the roller and small gears meshing with the large gears, a rotation shaft is fixedly connected to the small gears, and brakes are arranged on the rotation shaft. The roller is driven by a belt to achieve transmission to drive the small gears to rotate, low-speed transmission is changed into high-speed transmission, the brakes and backstops are installed on the high-speed shaft, and the braking problemof the permanent-magnet direct-driving roller is effectively solved.

The invention discloses a mining underground anti-tilt thermal insulation dining car which is used for solving the problems that the existing dining car does not have the anti-tilt function, thereby being not applicable to mine shaft transportation and being easy to cause the spill of foods. The mining underground anti-tilt thermal insulation dining car comprises a car body and wheels, wherein a thermal insulation chamber and a chamber cover are arranged in the car body, the thermal insulation chamber consists of an outer chamber and an inner chamber which have the same radian along the travelling direction of the car body, and the outer chamber is fixedly connected with the car body; two inner chamber door shafts are arranged in the middle positions of the top of the inner chamber, the inner chamber door shafts have elasticity, two ends of each inner chamber door shaft are fixed on the car body and can rotate, and the inner chamber is suspended on the inner chamber door shafts; and a certain gap is arranged between the inner chamber and the outer chamber, a brake shoe is arranged on the outer side of the inner chamber, and a fixing bolt and a fixing screw cap are arranged in the positions which correspond to the brake shoe at the bottom of the outer chamber. The mining underground anti-tilt thermal insulation dining car can effectively solve the tilt problem of the transportation of the dining car in a mine tunnel, play the roles of anti-tilt and brake, greatly facilitate the underground food transportation and have great market potential.

The invention discloses an emergency braking system for a harvester. The emergency braking system for the harvester comprises a hydraulic pump. The hydraulic pump is connected with an oil supplementing pump, and an inclined disc of the hydraulic pump is connected with a hydraulic pump servo cylinder. The oil supplementing pump is connected with an oil inlet of a hydraulic pump servo proportion valve through an oil path. An oil tank is connected with an oil outlet of the hydraulic pump servo proportion valve through an oil path. A first cavity of the hydraulic cylinder servo cylinder is connected with a first work oil port of the hydraulic pump servo proportion valve through a third oil path, and a second cavity of the hydraulic cylinder servo cylinder is connected with a second work oil port of the hydraulic pump servo proportion valve through a fourth oil path. The emergency braking system further comprises a two-position two-way electromagnetic valve, a work oil port of the two-position two-way electromagnetic valve is connected with the first cavity of the hydraulic pump servo cylinder through a first oil path, a work oil port on the opposite side of the two-position two-way electromagnetic valve is connected with the second cavity of the hydraulic pump servo cylinder through a second oil path, and the two-position two-way electromagnetic valve is electrically connected with an electric control system. The emergency braking system guarantees that the harvester can still be reliably braked and automatically controlled when the harvester has a circuit fault, so that the operation safety of the harvester is improved.

The invention provides a photoelectricity and CT (Computed Tomography) mixed differential protection system and method for an isolation transformer. The system comprises a primary-side unit, the isolation transformer, a secondary-side unit, a secondary protection system, a system incoming line, a system outgoing line and a circuit breaker, wherein the system incoming line and the system outgoing line are respectively connected to a primary side and a secondary side of the isolation transformer through the primary-side unit and the secondary-side unit; the primary-side unit and the secondary-side unit are respectively connected with the secondary protection system; the circuit breaker is positioned between the system incoming line and the primary-side unit. According to the photoelectricity and CT mixed differential protection system and the method for the isolation transformer, provided by the invention, the system is compact in structure, high in anti-jamming capability and high in reliability; differential protection is braked by accurately judging excitation surge current of the transformer; the application range covers all differential protection systems of the transformer.

The invention discloses an elevator counterweight frame to solve the problem about brake of the elevator counterweight frame in the radiating and emergency situations. The elevator counterweight framecomprises a frame body and a counterweight block; the frame body is provided with a guide shoe, a braking component and a guide rail; the braking component comprises a semiconductor chilling plate, aheat absorbing sheet and a phase change layer connected with the semiconductor chilling plate and the heat absorbing sheet; the braking component is arranged on the side, close to the guide rail, ofthe guide shoe; the heat absorbing sheet is arranged on the side, close to the guide rail, of the braking component; one end of the semiconductor chilling plate is arranged in the phase change layer;and the other end of the semiconductor chilling plate is electrically connected with a control circuit. Through the specially made braking component, the elevator counterweight frame realizes the radiating effect while realizing braking to improve the elevator safety.

The invention discloses a large vertical axis wind power system. A turbine is an ultra-large unit with the power being 10 MW stage or above, a main blade is formed by compositing a two-blade dual-arm Darrieus blade body, a Savonius blade body, air balls and the like of a supporting blade, the air balls solve the problem in aerodynamics brake, a permanent magnet direct drive is adopted in an electric generator, a magnetic suspension spring structure without an extra magnet is adopted in the whole shaft system, and the large vertical axis wind power system is a wind turbine generator set which is highest in structural strength, highest in power generation efficiency, best in safety and widest in industrial coverage in the world at present.