摘要:
A hydraulically powered impact device for rock drilling having an impact piston driven by a hydraulic drive unit and a shank rod adapted to be struck by the impact piston. A motor imparts a rotary motion to the shank rod by rotating a sleeve through a gear train. The sleeve is rotatably mounted around the shank rod. A chuck is splined to the shank rod and a dog clutch is provided between the sleeve and the chuck for engaging both. A fluid passage is formed for introducing lubricant fluid stored in a gear casing into a chamber accommodating the dog clutch. The fluid passages includes a valve which is held open as long as the cover is connected to the main casing.
摘要:
In an NiMnGa alloy represented by the chemical formula of Ni2+XMn1−X Ga, a composition ratio parameter X (mol) is selected within a range of 0.10≦X≦0.30. With this composition, the finish point of the reverse transformation of the martensitic transformation can be selected to a desired temperature within the range between −20° C. and 50° C., while the Curie point is also selected to a desired temperature within the range between 60° C. and 85° C. The alloy has the shape memory effect by the martensitic transformation and the reverse transformation. Furthermore, the alloy is induced with the reverse transformation by application of an external magnetic field at the martensite phase to exhibit the shape recovery.
摘要翻译:在由Ni2 + XMn1-XGa化学式表示的NiMnGa合金中,组成比参数X(mol)在0.10 <= X <0.30的范围内选择。 通过该成分,马氏体相变反转的终点可以选择在-20℃〜50℃的范围内的期望温度,而居里点也被选择为所需温度 范围在60℃和85℃之间。合金具有通过马氏体转变和反向转变的形状记忆效应。 此外,通过在马氏体相中施加外部磁场,通过反向转变来诱导合金以显示形状恢复。
摘要:
A plasma CVD method and the device for generating an arc discharging plasma, together with introducing both a material gas and a reactive gas into a vacuum chamber; coating a substrate with a thin film which contains a material gas component and a reactive gas component, said plasma CVD method comprising the steps of: introducing said material gas into a position between the arc discharging plasma and the substrate; and introducing said reactive gas into a space opposite, relative to the arc discharging plasma, to a side whereinto the material gas is introduced.
摘要:
A radiator guard structure for a vehicle comprising a pair of lift cylinder supports secured to a frame of the vehicle, a pair of hooks secured to the frame, and a radiator cover detachably mounted to the frame for guarding a radiator.The radiator cover has formed or mounted thereto a pair of pins each being engageable with the respective hooks and a pair of mounting seat structures. A resilient mounting is provided between each of said mounting seat structures and each of said lift cylinder supports.
摘要:
A suspension apparatus for a track-type vehicle comprises a main frame having a pair of laterally spaced track frames pivotally mounted on either side thereof through a pair of pivot shafts fixedly connected to either side thereof. The forward portions of the track frames are connected to opposite ends of an equalizer bar extending transversely therebetween through a pair of stress-relieved mounting devices into which lateral and vertical displacements of the track frames and the equalizer bar are absorbed so as to prevent "toe-in" of the track frames.
摘要:
A lighting circuit for an HID lamp causing no erroneous operation of a lighting circuit even when counter-electromotive force is generated due to the inductance in the wirings when the lighting circuit and the HID lamp are located at a long distance and not causing flicker even when the inter-electrode resistance of the HID lamp differs depending on the direction of the application voltage, comprising a control section (C) adapted, upon application of an AC rectangular wave voltage to an HID lamp (1) by a full-bridge type inverter (9), for detecting a resistance value in a positive direction and a resistance value in a negative direction of the HID lamp (1) corresponding to the direction of the polarity of the AC rectangular wave voltage, setting the duty ratio between the positive direction and the negative direction of the AC rectangular waveform voltage so as to be in an inverse proportion with the magnitude for each of the resistance values, and switching each of the switching elements (12A-12D) of the inverter (9) so as to form a voltage waveform to be kept at a ground potential for a predetermined period of time when the direction of the AC rectangular waveform voltage is inverted.
摘要:
Provided is an information providing system using video tracking, such that tracking of an original image can be performed without editing/processing the original video and without requiring a high level programming knowledge, and information can thus be easily provided. The system is configured so that an overlay screen (10) is superimposed on an original video screen (2) and displayed in synchronization with the original video, said overlay screen (10) provided with a transparent or translucent object graphic (5) acting as control information corresponding to a predetermined purpose of providing information, with respect to an object (4) represented by an original video image which is displayed on the original video screen (2) once or a plurality of times in accordance with the situation.
摘要:
Provided is an information providing system using video tracking, such that tracking of an original image can be performed without editing/processing the original video and without requiring a high level programming knowledge, and information can thus be easily provided. The system is configured so that an overlay screen (10) is superimposed on an original video screen (2) and displayed in synchronization with the original video, said overlay screen (10) provided with a transparent or translucent object graphic (5) acting as control information corresponding to a predetermined purpose of providing information, with respect to an object (4) represented by an original video image which is displayed on the original video screen (2) once or a plurality of times in accordance with the situation.
摘要:
A lighting circuit of confirming the insulation property of an HID lamp and a lighting circuit upon starting the operation of the HID lamp to previously prevent damages of the main circuit, and starting discharge at the lowest starting voltage in accordance with the characteristics of the HID lamp, comprising a control section having an insulation property confirming section for confirming that the current does not flow in a state of applying a predetermined voltage to the main circuit before applying the starting voltage to an HID lamp and a starting voltage variable controller for increasing the secondary voltage generated from the step-up transformer of the starting circuit stepwise after confirming the insulation property.
摘要:
A sheet convey device includes a plurality of feed rollers for conveying a sheet in a standing state, and guide plates for guiding the sheet to be conveyed. The device has helical rings, wound on two ends of the feed rollers in different winding directions, for guiding the sheet toward the central portions of the feed rollers.