Abstract: A roll crusher includes a crusher roll; a support for rotatably and radially shiftably supporting the crusher roll; a stationarily supported countermember cooperating with the crusher roll to define a crushing gap therewith; and a hydraulic setting system for radially displacing the crusher roll for varying the crushing gap. The hydraulic setting system includes a pressure source and a piston rod executing strokes and having an end coupled to the roll support for transmitting to the crusher roll setting forces derived from the pressure source. Further, an abutment device is provided for limiting the strokes of the piston rod to set a minimum magnitude of the crushing gap. The abutment device includes an actuating mechanism for placing the abutment device into a stroke-limiting state and into a piston rod-releasing state.

Abstract: A crushing machine includes a housing; a rotor rotatably supported in the housing; a plurality of impact tools secured circumferentially to the rotor; and an impact apron pivotally supported in the housing. The impact apron cooperates with the impact tools for crushing a material therebetween. A control device is connected to the impact apron for setting the impact apron at a selected distance from the impact tools to define a crushing gap. There is further provided a measuring device for measuring oscillations of the impact apron upon contact thereof with the impact tools during rotation of the rotor.

Abstract: An apparatus for unloading bulk material from a ship adjacent a dock has a portal support movable longitudinally on the dock parallel to the ship and carrying a boom having an inner end pivoted about an inner axis on the support and an outer end positionable over the ship. A conveyor extends between the ends of the boom and a catch bin is provided on the outer end of the boom above the conveyor. An outrigger arm pivotal on the outer end of the boom about an outer axis has an outer end over which passes a cable from which is suspended a grab. A winch connected to the cable can raise the grab from a position in a hold of the ship to a position above the catch bin. The arm is then pivoted to position the grab above the catch bin and then material is dumped from the grab into the catch bin so that it can be conveyed to the dock by the boom conveyor.

Abstract: A method of cooling white cement clinker sintered in a rotary kiln includes the following steps: introducing the white cement clinker from the rotary kiln into a first cooling stage; comminuting the white cement clinker in the first cooling stage; quenching the white cement clinker with a coolant in the first cooling stage in a short dwell period in an oxygen-poor environment to a mean temperature of approximately between 650.degree. C. and 750.degree. C.; introducing the white cement clinker from the first cooling stage into a second cooling stage; mixing and simultaneously conveying the white cement clinker in the second cooling stage in an oxygen-poor environment for a period of at least 15 seconds for obtaining a homogeneous mixture of particles of the white cement clinker and for further cooling the white cement clinker to a temperature of approximately between 550.degree. C. and 650.degree. C.

Abstract: A lifting device intended to support a load without pendulum movement has at least six hydraulic control cylinders connected by individual articulations to a horizontally movable support above the load and to a load lifter below that support. At least four of the control cylinders are mutually oblique. The articulations in each case allow swiveling action about two mutually perpendicular axes.

Abstract: For the transloading of loaded goods units (82), such as containers, interchangeable containers, semi-trailers or the like by means of transloading lifting gear (18) from or onto a slowly travelling train (6) formed by container cars (48), there is initially associated with each container car (48) to be unloaded and/or loaded a reference-point (R) the position of which, is continuously measured in relation to a fixed measuring section (40). Subsequently there is measured, in relation to the fixed measuring section (40)in the case of a unit (82) to be unloaded, the position, of at least one load attack point (81 ), andin the case of a unit (82) to be loaded, the position of locating elements (93) of the container car (48).

Abstract: A process for suctioning solid material from a waterbed and for conveying a resulting solids-water suspension into a hopper is provided. A flow of water is supplied to a towed suction basket. The basket has a suction region connected to a suction tube, at least one pressure nozzle and at least one motive nozzle. The flow of water supplied to the towed suction basket is divided into a motive water flow and a pressure water flow. The pressure water flow is directed through the at least one water pressure nozzle onto the waterbed for dislodging the solid material on the waterbed and creating the solids-water suspension in the suction region of the towed suction basket. The motive water flow is directed through the at least one motive water nozzle through the suction region of the towed suction basket and into the suction tube for accelerating the solids-water suspension into the suction tube.

Abstract: A bridge is assembled by locking truss-like girders along the sides of a bridge section to the transverse beams by a bayonet-type coupling and a swinging of the trusses relative to the transverse beams. Roadway plates are supported by the transverse beams and additional sections are assembled onto the previous sections. The sections can be advanced across an obstruction on a pair of support beams guided through roller frames affixed to at least the first and last sections, which support beams can later be mounted on the bridge span to function as guardrails.

Abstract: A bulk conveyor system has a longitudinally extending conveyor belt, devices at the ends for tensioning and relaxing the belt and for advancing the belt, a carriage movable along the belt between the ends, and a transverse conveyor cooperating with the belt, mounted on the carriage, and extending from the belt to a pickup/deposition location. This conveyor is laterally shifted through a predetermined turnover distance by first displacing the carriage longitudinally along the belt from one of the ends to the other end while lifting the belt and deflecting it transversely at the carriage along an S-path through the turnover distance thereby leaving the belt offset transversely at the other end by the turnover distance from the one end. Then the belt is arrested and transversely shifted at the other end of the belt by the carriage through twice the turnover distance. The belt is then relaxed and the device at the other end is shifted transversely by the carriage through twice the turnover distance.

Abstract: A roller carriage for portable bridges or bridge parts have a rocker carrier connected by a support stud to the bridge structure while the rocker bodies are connected to the rocker carrier by pins which are formed in one piece and inseparably with the rocker bodies. A pair of rollers are journaled on each of the rocker bodies.

Abstract: A deployable bridge having at least one bridge section which includes a base body; and a road section articulated to the base body for pivotal movement about a horizontal pivot axis oriented transversely to the length of the base body. The road section has a first pivotal position in which the road section lies lengthwise on the base body. The road section has a second pivotal position in which the road section is in a raised state relative to its first pivotal position. There is further provided a pivot shaft mounted on the base body and having a horizontal pivot axis oriented transversely to the length of the base body. A support member adjoins the base body and is articulated to the base body by the pivot shaft. The support member has a first pivotal position in which it is in a flat-lying state. In such flat-lying state the free outer end of the support member projects beyond the outer end of the road section in a direction away from a location situated at midlength of the bridge section.

Abstract: A bridge laying apparatus for longitudinally displacing a bridge section includes a pinion shaft; a pinion secured to the pinion shaft for moving with the pinion shaft as a unit; a bearing rotatably and axially slidably supporting the pinion shaft; and a hydraulic power cylinder unit. The power cylinder unit includes a cylinder coaxially surrounding the pinion shaft and defining a cylinder chamber; and a hollow piston axially slidably accommodated in the cylinder chamber and being axially driven by a pressure prevailing in the cylinder chamber. The hollow piston surrounds the pinion shaft. There is further provided a coupling arrangement connecting the hollow piston with the pinion shaft for axially displacing the pinion shaft and the pinion into an axially advanced and into an axially withdrawn position.

Abstract: The invention relates to a bridge comprising at least one bridge elements. The bridge elements has a base body that has chamfered end surfaces on which roadway plates rest that can be necessarily brought out of a drive-on position into a coupling position by hinged ramp plates in that respectively two bridge elements are moved toward the ramp plates into a drive-on position. The apparatus for laying the bridge has a guide (support rail, holding sheet) for the guide members of the ramp plates so that the bridge elements can be reliably guided together. Moreover, the apparatus has guide rails with which the locking elements (hook, pins) can be centrally actuated.

Abstract: A bridge deploying vehicle includes a deployment arm mounted on the vehicle for pivotal motion. The deployment arm has a length dimension and a frontal end oriented toward a bridge end while the bridge is being handled by the deployment arm. A first roller assembly formed of a plurality of rollers is pivotally mounted on the deployment arm for pivotal motion relative thereto about an axis perpendicular to the length dimension of the deployment arm; and a second roller assembly formed of a plurality of rollers is pivotally mounted on the deployment arm for pivotal motion relative thereto about an axis perpendicular to the length dimension of the deployment arm. The first roller assembly is closer to the frontal end of the deployment arm than the second roller assembly. During handling of the bridge by the deployment arm, the first and second roller assemblies enter an entrance pocket at the bridge end and are guided onto a runner rail mounted on the bridge.

Abstract: Proposed is a crushing machine, in particular an impact crusher, comprising at least one rotatably driven rotor mounted in a housing and equipped with crushing elements, as well as at least one impact mechanism which faces the rotor and is fitted with impact elements, wherein the impact mechanism or impact mechanisms is or are mounted in at least one frame which is independent of the housing, and which together with the impact mechanism or mechanisms can be swung into a roughly horizontal position outside the housing.

Abstract: A dismountable bridge comprises at least one bridge section including a top deck and a bottom boom disposed underneath the top deck. The bottom boom includes a mechanism for adjusting the length of the bottom boom. Rigid end supports each have one end hinged to a respective one of the ends of the top deck and have another end hinged to a respective one of the ends of the bottom boom. Tension elements are disposed laterally of the bridge section and are stressed only tensionally. Each tension element has one end hinged to one end of the top deck and another end hinged to an end of the bottom boom opposite to the one end of the top deck. The bridge section can be changed from a transport position, in which the top deck and the bottom boom are collapsed for maintaining a low height for transporting, and into an operating position in which the top deck is remote from the bottom boom at least at one end of the bridge section.

Abstract: A transportable bridge having longitudinal sides, includes plural bridge sections connected in series and presenting first and last bridge sections in the series. Each said bridge section in the series includes a deck slab extending across a width of the bridge and having front and rear transverse ends, and an inverted triangular truss on each longitudinal side of the bridge. Each truss has a lower corner portion and an oppositely disposed top beam. The lower corner portion of the truss is connected to the rear transverse end of the deck slab and additionally to the front transverse end of the deck slab of an adjacent following bridge section in the series of bridge sections. The top beam of the truss of the bridge section is connected to the top beam of the adjacent following bridge section thus forming a trough-shaped bridge having a lateral truss structure. A further deck slab is associated with the last bridge section.

Abstract: The connecting belt bridge provided with the feed end side and the discharge side end each supported on their respective travelling means, the discharge side travelling means including a travelling unit which is not railbound, the connecting belt bridge being pivotally supported on the discharge side travelling means about a vertical as well as a horizontal axis and on the feed side travelling means by a longitudinally displaceable single point support including a support beam which can be horizontally aligned and has at its feed side end a feed jib hinged on by way of a horizontal transverse axis.

Abstract: Ball race slewing gear, for example, for open-cast mining equipment, are oil-lubricated ball race lower parts made up of segments and receiving the supporting balls supporting the superstructure, which can be rotated in relation to the lower frame. To inprove the sealing of the segments (1) against oil leaking out of the separating lines and to make it superfluous to disassemble the ball race slewing gear for each renewal of the seal, the end faces of the segments (1) are formed with recesses (2) which enclose the ball race (3) in U-shape and whose arms (5) are open in the direction of the inside and outside of the ball race lower part and which receive strand-shaped rubber or plastics sealing sections (6). The sealing sections (6) have segment side sealing lips (9) and a continuous cavity (10) and are each disposed completely in one of the two abutting segments.

Abstract: A disc-shaped rotary cutter for continuous excavation of hard mineral rock layers according to the invention includes a supporting element having a plurality of end faces and a plurality of cutting elements formed on a circumference of the supporting element and the plurality of end faces. According to the invention, the rotary cutter provides a cylindrical compressive strength of equal to or greater than 20 MPa.