摘要:
The invention relates to an arrangement for conveying concrete for the construction of multi-storey concrete buildings. The arrangement comprises a concrete-distributing mast which is height-adjustable on completed parts of the building, for example on storey floors (48′, 48″, 48′″), the mast comprising a supporting column (10), a rotary unit (12) and an arm assembly (14) preferably designed as an articulated boom, and the mast being equipped with a conveying line (16) which is guided over the height of the supporting column (10) to the arm assembly (14) and which is supplied with liquid concrete. To facilitate the handling of the concrete-distributing mast during transportation and during the climbing operation, the invention proposes that the supporting column (10) has at least one channel-shaped surface depression (36, 38) extending in the longitudinal direction of the column, in which depression can be sunk that part of the conveying line (16) which extends over the supporting column (10), and/or an elongate part of the climbing apparatus (52).
摘要:
The invention relates to an automatic concrete pump with an articulated mast (14) serving as a support for a supply line and with two forward and two backward support extensions (16′,16″,18′,18″) which can be supported on a base platform (32) and which can be lowered from a driving position into a support position, each with a telescopic support leg (30). According to the invention, each support extension comprises one inner support position near to the chassis, and at least one outer support position away from the chassis, which can be freely selected by forming defined support configurations (V,SL,SR,YL,YR,N) for the four support extensions. Further, a control device for the movement of the mast arm is provided which comprises a software program corresponding to the selected support configuration, which program limits the pivot angle of the first bending arm (1) about its bending axis (A) and an associated range of angular rotation of the rotatable head (24) about the vertical axis (22), according to the specification of the selected support configuration.
摘要:
An apparatus and a method for exchanging information about tonal values and calorimetric values between a prepress stage, a printing stage and a quality control stage are provided. The apparatus and the method create characteristic curves which are used to optimize a process calibration and a color calibration.
摘要:
A positioning device for a rubber-blanket cylinder which is supported in double-excentric bearing rings allows a positional adjustment of the rubber-blanket cylinder relative to a plate cylinder and a printing substrate supported on an impression cylinder. The plate cylinder and the impression cylinder have stationary axes of rotation relative to the frame of the printing unit. A printing gap is adjusted by the positioning device to varying printing substrate thickness, and in one terminal position, the rubber-blanket cylinder is fully disengaged from the other cylinders. The rubber-blanket cylinder is shifted along a positioning path with one segment following an arc of a circle which is concentric with the plate cylinder. The parameters of the bearing and the adjusting devices are defined such that the positioning path is traversed while the respective inner and outer bearing rings rotate continuously.
摘要:
The essentially semi-circular busbar connecting oppositely located positive brushes is shiftably held in seating means provided in the positive brush-holders and in the intermediate negative brush-holder and has an offset extension which can be firmly screwed to the lug of an exciter winding while frictional forces between the busbar and the seating means yield and allow the busbar to take a position that compensates for the accumulation of manufacturing tolerances and results in the elimination of stresses which might otherwise damage the resistance welded connections of the Litz leads of the brushes to the busbar. When the brush-holders are of metal, the seating means involve a plastic insert in a bracket against which the brush-pressure springs bear and when the brush-holders are of insulating plastic, the seating means are provided by features molded onto the brush-holder, in which case it is desirable to provide a wire clip type of spring to bear against the busbar.
摘要:
To provide for axial alignment of the shaft of a starter motor, the shaft is formed with a ring groove (17) and a pair of half-disks (18) positioned between a holding plate (12) of the brush holder and the end shield (6) of the starter retains the half-disks in position, the half-disks engaging in the groove to thus position the axial location of the starter shaft (3).
摘要:
The starting mechanism has a solenoid switch combination 11 for causing gear meshing engagement of a drive pinion 4 with a gear 31 of an internal combustion engine via an engagement lever 16 and a gear engagement mechanism 5-8. A pre-compressed spring 28 is disposed between the engagement lever 26 and the armature 18. The force of that spring aids the magnetic force of the solenoid switch 11 for pulling the armature 18 into the solenoid 11 against the force of a gear mesh spring 21 if the pinion 4 and the gear 31 are in the tooth-to-tooth position to engage the starter motor switch of the combination 11 and cause rotation of the motor, permitting engagement of the pinion 4 and gear 31.
摘要:
A system and method for using an easy query in a business warehouse system environment that includes external end-user systems. A method includes providing a flag in a query to a business warehouse data system, the flag marking the query for access to the query by sources external to the business warehouse data system. The method further includes providing, by the at least one data processor the access points having a number of parameters that are fixed at a design time associated with the query, providing a query result to the access points of the sources external to the business warehouse system according to the number of parameters. The system and method provide an easy way of creating an access function at design time, as well as an easy way of result set consumption provided by the function at runtime.
摘要:
In a method for the finishing of a crankshaft bearing bore in a cylinder crankcase of an internal combustion engine, starting from a prepared crankshaft bearing bore, a finished crankshaft bearing bore is produced with a prescribable desired size, a prescribable desired structure of the bore inner surface and a prescribable desired position of the bore axis. The prepared crankshaft bearing bore is first finished with at least one finishing tool with a geometrically defined cutting edge and then the honing of the crankshaft bearing bore is carried out. In a final finishing operation with a geometrically defined cutting edge immediately preceding the honing, an allowance of at least 0.4 mm is removed, and the honing tool is introduced into the bore coaxially in relation to the desired position of the bore axis and moved within the bore, an allowance of at least 0.08 mm being removed during the honing.
摘要:
An apparatus for controlling the amount of fluid to be transferred, contains a first rotating device which has a first fluid-transferring section in its circumferential direction, a second rotating device which has a second fluid-transferring section in its circumferential direction, and a control device for setting the phase position between the first fluid-transferring section and the second fluid-transferring section. The control device is configured for accelerating and retarding a rotation of the first rotating device periodically.