Atlas Copco | Date: 2015-05-04
Method for cool drying gas, whereby the cool dryer is characterised by curves that show the setpoint for the evaporator temperature or evaporator pressure for a load as a function of the lowest gas temperature, whereby the method comprises the following steps:the determination of a curve and Tset or pset as a function of the load that is required to cool the gas to LATset; the control of a supply of coolant from the compressor to an injection point (P) downstream from the expansion means and upstream from the compressor in order to make the evaporator temperature or evaporator pressure equal to Tset or pset.
Atlas Copco | Date: 2015-03-04
A method of obtaining high clamp force accuracy at a threaded joint mounting process by a power tool includes: registering, during a certain interval of the mounting process, tightening and loosening torques applied on the joint, rotational movement of an output shaft relative to a housing, and housing angular displacements about a rotation axis and in relation to an immobile point; calculating output shaft true rotational movements by comparing its rotational movements relative to the housing with the registered housing angular displacements; comparing the applied tightening and loosening torques during the certain interval to determine a clamp force related tightening torque; relating the determined tightening torque to the calculated output shaft rotational movements to determine a clamp force coefficient of the threaded joint; and completing the mounting process by tightening the joint to a target clamp force level by applying a determined clamp force coefficient based torque.
Atlas Copco | Date: 2015-04-17
A drill head for a rotation drilling rig, including: a rotation motor, a drill head spindle, and a gear change transmission between the rotation motor and the drill head spindle, the gear change transmission including an input shaft connected to the rotation motor and an output shaft connected to the drill head spindle. The input shaft is co-axial with the output shaft, the input shaft is permanently coupled to an intermediate shaft over a first speed reduction gear couple, the gear change transmission) includes a clutch being shiftable between a first position interconnecting the input and output shafts for obtaining the same rotational speed for the input and output shafts, and a second position connecting the intermediate shaft to the output shaft over a second speed reduction gear couple. The invention also relates to a rig.
Atlas Copco | Date: 2015-04-22
A chuck for a drill head of a rotation rock drilling rig, wherein a plurality of jaws are equally angularly distributed around a grip position axis, wherein the jaws co-operate with actuator means for radial movements of the jaws, and wherein the chuck includes urging means being arranged for influencing the jaws into the release position. The urging means is a partially annular jaw spring surrounding said axis and having two spring ends adjacent to each other. The jaws together form an inside seat for the jaw spring and the jaw spring is arranged for fixing engagement with one of the jaws. The invention also relates to a drill head, a rig and a jaw spring.
Atlas Copco | Date: 2015-05-18
A joint for joining together drill string components of a drill string for percussion drilling, the joint including a male part and a female part, wherein a first impact surface is arranged to co-operate with a second impact surface. When the drill string is in operation, relative axial movement is allowed between the male and the female parts when the first and the second impact surfaces are adjacent to each other. The invention also concerns a male joint part, a female joint part, a drill rod, a shank adapter, a drill head, a drill bit and a drill string component.
Agency: Cordis | Branch: H2020 | Program: ECSEL-RIA | Phase: ECSEL-01-2014 | Award Amount: 30.14M | Year: 2015
The overall concept of MANTIS is to provide a proactive maintenance service platform architecture based on Cyber Physical Systems that allows to estimate future performance, to predict and prevent imminent failures and to schedule proactive maintenance. Maintenance is no longer a necessary evil that costs what it costs, but an important function that creates additional value in the business process as well as new business models with a stronger service orientation. Physical systems (e.g. industrial machines, vehicles, renewable energy assets) and the environment they operate in, are monitored continuously by a broad and diverse range of intelligent sensors, resulting in massive amounts of data that characterise the usage history, operational condition, location, movement and other physical properties of those systems. These systems form part of a larger network of heterogeneous and collaborative systems (e.g. vehicle fleets or photovoltaic and windmill parks) connected via robust communication mechanisms able to operate in challenging environments. MANTIS consists of distributed processing chains that efficiently transform raw data into knowledge while minimising the need for bandwidth. Sophisticated distributed sensing and decision making functions are performed at different levels in a collaborative way, ranging from local nodes to locally optimise performance, bandwidth and maintenance; to cloud-based platforms that integrate information from diverse systems and execute distributed processing and analytics algorithms for global decision making. The research addressed in MANTIS will contribute to companies assets availability, competitiveness, growth and sustainability. Use cases will be the testing ground for the innovative functionalities of the proactive maintenance service platform architecture and for its future exploitation in the industrial world. Results of MANTIS can be utilised directly in several industry areas and different fields of maintenanance.
Atlas Copco | Date: 2016-04-06
A system and method is provided for efficiently managing the compression of gas depending on the operating conditions and operating mode of the compression system, wherein the system includes a booster compressor, a booster compressor bypass, a conduit connected to the booster compressor and the booster compressor bypass conduit, a means for selectively directing the flow of the gas based on current operating conditions, to the booster compressor bypass or the booster compressor and a baseline compressor connected to both the booster compressor and the booster compressor bypass conduit.
Atlas Copco | Date: 2016-08-31
A ratchet type power wrench comprising a ratchet mechanism supported in a housing (10), a pressure medium powered actuator coupled to the ratchet mechanism, a rotatable output socket (15) connected to the ratchet mechanism and connectable to a screw joint, and an angle encoder is provided to indicate angular displacements of the output socket (15), wherein the output socket (15) is open ended for alternative ways of engagement with a screw joint or a screw joint engaging implement, and the angle encoder comprises a rotatable signal initiating part including a support sleeve (20) and a code ring (22) detachably connected to the output socket (15). The angle encoder is comprised in a separate angle encoder unit (18) detachably mounted on alternative sides of the housing (10) for enabling adaptation of the wrench to different screw joint tightening operation conditions.
Atlas Copco | Date: 2016-11-02
The present invention relates to machine weight regulation system which comprises one or more ballasts (1); a fastening system (2); and a machine (3) containing a housing; capable of carrying a plurality of types of extra weight.
Atlas Copco | Date: 2016-04-19
A method for manufacturing a rotor includes the following operations: the clamping of a workpiece in a grinding machine; the performance of one or more cylindrical grinding operations whereby a rotor shaft section is ground to the desired diameter with a cylindrical grinding disk; the performance of one more profile grinding operations whereby a rotor body is profiled with a profile grinding disk. During the manufacture of the rotor in the grinding machine, the workpiece is not undamped and the cylindrical grinding operations and the profile grinding operations are done with the same grinding machine.