摘要:
A device for transmitting impulse-like blows to a continuously rotatable tool bit (6) is formed as an axially extending adapter (1) having a first chuck for the tool bit (6) and being insertable at a trailing end into a second tool bit chuck in a manually operated tool equipped with a striking mechanism. The adapter (1) has a housing (2) containing a unit for superimposing a second blow component on the first impulse blow component produced by the striking mechanism, so that an impulse-like drilling blow can be transmitted to the drill bit (6) made up of an axially directed blow component and a torsional blow component.
摘要:
A percussion electrical tool including an electrical motor (6) located in a firedamp-protected housing (6), control electronics (4) for controlling operation of the electric motor (6); an inverted rectifier (5) connecting the control electronics (4) with the electric motor (6); an electronic module (9) located in the housing (3); an intermediate wall (7) for separating the electronic module (9) from a portion of a housing volume in which the electric motor (6) is located, connected with the inverted rectifier in a heat-conductive manner, and having a fluid-cooled cooling medium conduit.
摘要:
A rock drill including a drilling rod (2), a cup-shaped drilling head (5) secured to the drilling rod (2) at one of its ends, and connection elements including at least one radially projecting, entraining web (8) associated with the drilling rod (2) and received in at least one axially extending entrain slot (9) which is formed in an entrain surface of the cup-shaped drilling head (5) for securing the drilling head (5) to the drilling rod (2) for joint rotation therewith and for a limited axial displacement relative thereto.
摘要:
A percussion electrical hand-held tool including a housing (10), a percussion element (2) located in the housing, and a planetary gear unit (5) located in the housing (10) for converting a rotational movement (107) of the drive shaft (&ohgr;) of the hand-held tool (8) into a reciprocating movement (&ugr;) of the percussion element (2), with the planetary gear unit (5) including a sun gear (6) changing of a setting (&agr;) of which provides for adjusting of an impact amplitude of the reciprocating movement (&agr;) of the percussion element (2), and control unit located in the housing (10) for adjusting the impact amplitude in accordance with a manual axial force applied to the handle of the hand-held tool (8).
摘要:
A rock drilling tool including a tip (3) formed of a hard material and provided at one end of the tool stem and a shank (4) provided at an opposite end of the stem (2) and having a plurality of entrain grooves (5) extending up to a free end surface of the shank (4), with an entire recessed surface (11) of an entrain groove (5) being larger than an entire outer surface (10) of a groove-forming rest web (6), and with a mean rest cross-sectional area (A′), which is measured within an axial section of the drilling tool having a length at least equal to a product of a natural logarithm base and a stem diameter (e×D), deviating from a mean rest cross sectional area (A) along the entire tool length maximum by 20%.
摘要:
An electrical hand operated tool driving device (1), such as a hammer drill, a combination hammer or a chipping hammer, has an electropneumatic striking mechanism (2), for which a cooling medium (8), for cooling the striking mechanism (2), flows through a liquid-tight cooling medium duct (10, 11, 12, 13), which is disposed in a housing (7) of the tool driving device (1).
摘要:
A valve, including a valve opening and a valve plate arranged to seal the valve opening in a closed state by means of compressing a sealing structure is provided, wherein the sealing structure includes an uncompressed dimension in a compression direction of less than 100 μm.
摘要:
A pump for pumping a medium from a suction side to a pressure side includes a filter arrangement. The filter arrangement includes an inflow path, a first outflow path, and a second outflow path. A hydrophobic membrane filter is arranged between the inflow path and the first outflow path. A hydrophilic membrane filter is arranged between the inflow path and the second outflow path. At least one section of the hydrophobic membrane filter and one section of the hydrophilic membrane filter are located opposite each other at a distance of no more than 1 mm so that a gas bubble that moves along with a medium flowing in the inflow path comes into contact with the hydrophobic membrane filter during the movement. The first and second outflow paths of the filter arrangement are connected to the suction side of the pump.
摘要:
The present invention relates to a coding parameter independent method for reduction of blocking artefacts in a compressed image or video signal. For this purpose, the image is analysed in the vicinity of the block boundaries in order to measure the existence and strength of blocking artefacts and to detect image areas. Based on the analysis result map information for each pixel adjacent to a block boundary is generated. The filter mode for each block boundary is adaptively determined dependent on the map information and the image is filtered depending on the chosen filter mode.
摘要:
A fault-tolerant actuating system with at least one flap, adjustable on a respective wing of an aircraft, and with a control and monitoring device, includes: drive devices that are functionally connected to the control and monitoring device, with one of these drive devices in each case being associated with a flap, where each flap in each case is associated with a drive device, in each case including: two drive motors, two brake mechanisms, where each drive motor is associated with a brake mechanism for stopping rotation of the output of the respective drive motor, a differential that couples the outputs of the aforesaid to the aforesaid in a summing manner, an output shaft for coupling the output of the differential to drive connections, and a differential lock that is functionally connected to the control and monitoring device, which differential lock is coupled to the control and monitoring device in this manner, where each of the brake mechanisms as well as the differential lock can be operated by way of a command signal from the control and monitoring device; adjustment devices, that are coupled to the respective drive device associated with the flap, where each adjustment device in each case includes: a transmission gear unit, an adjustment mechanism and a position sensor that is functionally connected to the control and monitoring device for acquiring the adjustment state of the flap; where the control and monitoring device includes: an actuating function for generating command signals for the drive motors for adjusting the flap, a monitoring function by way of which a command signal is transmitted to both brake mechanisms and to the differential lock for operating the aforesaid when the control and monitoring device based on a comparison of sensor values of the position sensors on two different adjustment devices of a flap determines different adjustment states that exceed a predetermined extent, and a method for monitoring an actuating system.