摘要:
An arrangement for the detection of relative movements of two objects with four measuring cells as vertical measuring device for the detection of a relative movement perpendicular to an imaginary plane, with the measuring cells being arranged in such a manner that their vertical projections onto the plane are arranged at an identical angular distance from each other about a centre. Further, a force and/or moment sensor with a first board and a second board which are elastically connected with each other and movable relative to one another.
摘要:
To convert a rotational movement into an axial movement, rolling or roller bodies (2') are seated by way of a plurality of guide rings (5) and bearings (6) disposed between the guide rings (5) and a spindle nut (3'). The rolling or roller bodies (2') are fixedly spaced relative to the spindle nut (3') and one another, so an axial reception of a force or torque by the spindle nut (3) is transmitted through the rolling and roller bodies (2'), the guide rings (5) and the bearings (6), and, via the rolling or roller bodies (2'), the guide rings (5) and the bearings (6), a rotational movement of the spindle rod (1) is converted into an axial movement of the spindle nut (3'), or vice versa, that is free from pitch errors.
摘要:
The present invention relates to an electric circuit. The electric circuit comprises at least six light-emitting elements and at least three switching networks for individually controlling the light-emitting elements. Each switching network is connected with at least four light-emitting elements. The at least three switching networks are connected with each other by parallel connections of respective two of the at least six light-emitting elements. The respective two light-emitting elements have opposite current blocking directions.
摘要:
A process for preparing an extensively amorphous butene-1-propene-ethene terpolymer having a high softening point comprises low pressure solution polymerizing butene-1, propene and ethene by contacting these monomers with a catalytically effective amount of a mixed catalyst of a thermally unstable crystalline TiCl.sub.3 .multidot.0.30 to 0.35 AlCl.sub.3 and a trialkyl aluminum or dialkyl aluminum hydride, each having alkyl groups of 2-4 carbon atoms, the atomic ratio of Al:Ti being 0.8-4.0.
摘要:
There is provided by the present invention an optical-electronic rangefin having a housing adapted to be integrated in the gripping arm or mechanism of a robot and housing a light transmitter transmitting a well focussed high intensity light beam, a light receiver having a position detector, a pulse-electronic circuit for controlling the light transmitter and an amplifier circuit for transforming the currents received from the position detector into proportional voltages. The light transmitter and light receiver are so disposed with respect to each other that the central axis of the light transmitter and the optical axis of the light receiver define a predetermined acute angle between each other.
摘要:
A force-torque sensor is provided for measuring all six possible force andorque components in the Cartesian coordinate system by means of wire strain gauges. The sensor has two identically designed integral spoke wheels each consisting of a rigid cylindrical outer ring and a central hub interconnected by four spokes. Proximate to the hubs of the two spoke wheels, such hubs being rigidly and solidly connected with each other, wire strain gauges are mounted in pairs on opposed spoke surfaces perpendicular to the central axis, as well as on the opposed surfaces of one diagonal pair of spokes of one of the two spoke wheels, the latter surfaces extending perpendicular to the former.
摘要:
A construction board provided with reinforcements such as fibers and bonded together by organic and/or inorganic cementing means such as cement or plastics is made non-combustible by inclusion of additives and without significant degradation of strength to an extent that the combustion class A 2 of DIN (German Industrial Standard) 4102 is observed. Also, and at the same time, the toxicity of the combustion gases is reduced.The invention provides that the construction board includes from 20 to 70% of manganese dioxide (MnO.sub.2).
摘要:
This invention relates to a process and apparatus for the cooling of polymerization charges in emulsion, suspension, solution, and bulk polymerizations in connection with incompletely filled polymerization reactors or vessels having capacities of 40 m.sup.3 or greater and thermal loads of more than 500,000 kcal/h with the aid of a reflux condenser or cooler which is in communication with the gas space of a polymerization vessel.
摘要:
The present invention relates to an optoelectronic device for determining relative movements or relative positions of two objects, comprising a first object fixed relative to a frame of the device; a second object mounted in spaced relation to the first object and adapted for movement relative thereto; and at least one measuring cell for determining movement or displacement of the second object relative to the first object. The present invention provides a resilient member arranged between the first object and the second object for dampening relative movements, wherein the resilient member substantially surrounds the at least one measuring cell.
摘要:
Device for pneumatically milking a cow, comprising a number of milk extractors, each comprising a teat cup as well as milk line connected to the lower end of the teat cup, which line leads from the teat cup to a collection chamber for the milk from the teat cup, each milk extractor being provided with a supply for a cleansing medium, such as a disinfectant, to the teat cup, in particular to a teat present in the teat cup, the supply comprising a line having an end portion with discharge end, and each milk extractor being provided with means for closing off the passage of the milk extraction at or downstream of the discharge end of the line for cleansing medium, preferably at that level, when discharging the cleansing medium, the closing means comprising a reciprocating closing body that can be moved between a position leaving the passage of the milk extractor free and a position closing it off, the closing body being provided with a squirt line forming the end portion with discharge end of the line for supply of cleansing medium, and being positioned to debouch into the milk extractor, particularly the milk line, when in the closing-off position