30results about How to "Eliminate the risk of loss" patented technology

The invention relates to a rotor (103) for a turbine (100), comprising a plurality of rotor components (130) lined up in the axial direction and connected by means of a connecting rod (144), wherein a groove (152) which extends in the circumferential direction and is open in the axial direction is disposed on one of the rotor components (130), wherein a coupling element (154) running around the connecting rod (144) in order to support the connecting rod (144) is disposed in the groove (152). Said rotor is intended to enable particularly stable support of the connecting rod in order to prevent vibrations by technically simple means. For this purpose the coupling element (154) is disposed on a retaining element (150) connected to the connecting rod (144).

The invention discloses an anti-burglary locking-controlled ball check valve. The anti-burglary locking-controlled ball check valve comprises a valve body, a bonnet and a valve element, wherein the valve element is connected with a wrench through a valve stem, the valve stem is positioned in a filler bin arranged on the side of the valve body, and a limiting stop tongue for limiting the rotating angle range of the wrench is formed on the wrench; an external port of the bonnet forms a structure of an anti-burglary connector, and a check valve structure is formed on a fluid channel of the bonnet; and a locking screw of which the head is provided with a prismatoidal tightening structure is arranged between the limiting stop tongue and the outer wall of the filler bin of the valve body. The locking screw is used for locking the wrench through the outer wall of the filler bin, and the wrench is unlocked when the locking screw is only separated from the outer wall of the filler bin or the limiting stop tongue. The anti-burglary locking-controlled ball check valve has the advantages that locking and burglary prevention can be effectively carried out, the mounting distance is fixed, and hidden leaking points are few; the locking screw is free of missing risks; and when the anti-burglary locking-controlled ball check valve is used in a household fuel gas pipeline, the trouble that running water flows back into the fuel gas pipeline due to the wrong connection of the gas pipeline and a water pipeline can be effectively eliminated.

The frame has a face (10) provided with a tenon (20) terminated by two tabs (22) bent at right angle. A leg (30) includes two tabs (32) bent at right angle to come against the tabs of the tenon, where each tab of the leg is provided with a bore (33) to receive a hinge pin (41) whose ends (411, 412a) meet the tabs of the leg and the tenon. A wedge (42) is installed between the hinge pin and inside of the tenon to support the hinge pin between the tabs of the leg and the tenon, where the wedge is retained by the hinge pin.

The invention discloses a rail wheel synchronous control device for a traction power test device of a rail transit vehicle. An accompanying test motor is connected to one side of each rail wheel; a sensor is arranged between each rail wheel and an output shaft of each accompanying test motor; an accompanying test converter is connected to each accompanying test motor and is connected with a signal acquisition control unit arranged on the field; the signal acquisition control units are one or more circuit boards or circuit units arranged inside the accompanying test converters or signal acquisition controllers arranged outside the accompanying test converters; and the signal acquisition control units are used for receiving control signals from the sensors and / or other signal acquisition control units, and the control signals are integrally processed and then are outputted to the accompanying test converters. Dynamic work conditions of various motors are acquired on field in real time and are integrally processed by the signal acquisition control units for controlling various accompanying test converters, so that output rotating speeds and the torques of all motors can be enabled to be same, traction and brake work conditions of tested locomotives can be dynamically adapted and the synchronous control on the rail wheels can be realized more accurately.

A data receiving method comprises the steps of establishing a configuration descriptor circular linked list containing two direct memory access (DMA) configuration descriptors; forming a circular receiving chain by utilizing a DMA chain type mode, setting a header as a current configuration descriptor and starting a DMA; responding DMA received data to finish interruption; reconfiguring the current configuration descriptor, resetting the state of an indicating bit according to the value of the indicating bit and the length of the received data and setting the next node as the current configuration descriptor; and waiting for interruption again. The invention effectively integrates the advantages of fixed-length transmission and head mark transmission and realizes random-length transmissionof data through utilizing the chain type DMA and dynamically collocating the DMA receiving length, thereby ensuring both the system load and the transmission efficiency and eliminating the risk of data loss. The invention also discloses a data receiving device, a data sending method and a date sending device.