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408results about How to "Expand the working area" patented technology

Soft rock four-line large-span tunnel compound double-side wall bracing cable conversion excavation construction method

InactiveCN102226398AExpand the working areaInternal force redistribution is not obviousUnderground chambersTunnel liningEngineeringBuilding construction
The invention relates to a soft rock four-line large-span tunnel compound double-side wall bracing cable conversion excavation construction method which has the characteristics of safety in construction, speediness and simpleness in operation, and is further applicable to large-scale machines for construction. The method comprises the following steps: (1) excavating pilot holes on side walls on two sides, firstly implementing corresponding forepoling before excavation, and immediately implementing corresponding preliminary bracing and temporary bracing after the excavation; (2) pouring pedestal foundations on the two sides; (3) excavating side pilot holes of arch parts on the two sides respectively, firstly implementing the corresponding forepoling before the excavation, immediately implementing the corresponding preliminary bracing and the temporary bracing after the excavation, and implementing a pre-stressed anchor cable connected with a surrounding rock anchor at the top of the corresponding preliminary bracing; (4) excavating core soil of the arch parts bench by bench, firstly implementing the corresponding forepoling before excavating an upper bench, immediately implementing the corresponding preliminary bracing after the excavation, and implementing the pre-stressed anchor cables connected with the surrounding rock anchor at two end parts of the preliminary bracing; (5) pouring secondary lining of the arch parts; (6) excavating the lower core coil bench by bench; and (7) pouring an inverted arch, and pouring the inverted arch to the design height.
Owner:CHINA RAILWAY ERYUAN ENG GRP CO LTD

Polysilicon crushing device

The invention discloses a polysilicon crushing device and relates to a polysilicon crushing appliance. An upright post (13) is arranged at the middle part of any side of a material box (12), a rotating shaft (14) is movably connected with the upper part of the upright post in an inserting manner, one end of a guide rail (3) is fixedly connected with the upper end of the rotating shaft (14) or one end of the guide rail is movably connected with the upper end of the upright post so as to form a horizontal rotating structure of the guide rail, a sliding mechanism is in sliding fit with the guide rail, an elastic body connected with an impact cylinder (17) is arranged at the lower part of the sliding mechanism, and an impact head (18) is arranged at the lower end of the impact cylinder so as to form a structure enabling the impact head to be in multi-station correspondence with polysilicon (6) in the material box (12). In the invention, an extension spring arranged on the guide rail is used to flexibly control a silicon rod beating structure consisting of the impact cylinder and the impact head, thereby effectively overcoming the defects of manual crushing, such as high cost, low efficiency, unsafety and the like, effectively improving the production efficiency and achieving the purpose of mechanical crushing.
Owner:洛阳佑东光电设备有限公司

Robot automatic welding workstation for large tank and welding method using robot automatic welding workstation for large tank

The invention discloses a robot automatic welding workstation for a large tank and a welding method using the robot automatic welding workstation for the large tank. The robot automatic welding workstation for the large tank comprises a welding system and a PLC automatic control system which is connected with the welding system through a network bus. The robot automatic welding workstation for the large tank is characterized in that the welding system comprises sliding rails, positioners and a rack; the rack is installed on the sliding rails in a sleeved mode; the positioners are located on the center line of the two sliding rails; the rack is provided with a six-axis linkage robot fixedly provided with a welding gun. The PLC automatic control system controls the welding route of the welding system through a driver. By the adoption of the robot automatic welding workstation for the large tank and the welding method using the robot automatic welding workstation for the large tank, full automation of the welding system can be achieved; welding joints are more smooth and flatter; the welding precision is high; the space positioning accuracy can reach 0.1 mm; the welding quality is good; deformation is small; as the space actions of the six-axis linkage robot are flexible, the welding gun can be moved to each portion of the tank and can weld welding joints of various forms.
Owner:HUBEI QIXING TRUCK & CABIN MFG

Fully-automatic water sampler used for layered collection of water sample

ActiveCN106092658AConvenience for water harvesting operationsSimple control systemWithdrawing sample devicesControl systemElectric machinery
The invention discloses a fully-automatic water sampler used for layered collection of a water sample. The fully-automatic water sampler mainly comprises a sampled water barrel mechanism, a cam group mechanism, a rope system mechanism, a support mechanism and a control system part. The sampled water barrel mechanism is uniformly distributed on a small support circular ring, and is used for collecting the water sample; the cam mechanism controls movement of a small chuck under the driving of a moor in order to control closure of a water barrel sealing cover; the rope system mechanism plays a role in transmission of the force of the small chuck and amplification of the stroke; the supporting mechanism plays a role in fixed connection of the whole mechanism and hoisting in the working process; and the control system part plays a role in water depth identification and control of the running of the motor. The water sampler can realize control of the movement of a plurality of cams through one motor in order to realize collection of the water sample in different water layers, so the water sampler has the advantages of realization of whole-course fully-automatic working process, no artificial release of a hammer, realization of unattended operation, wide working area, reduction of interference of artificial factors, and realization of water collection of more water layers through conveniently developing the quantity of water collecting barrels and cams.
Owner:SHANGHAI UNIV

Multistage extrusion-type magneto-rheological damper

The invention relates to a magneto-rheological damper, in particular to a multistage extrusion-type magneto-rheological damper. The multistage extrusion-type magneto-rheological damper is suitable for the vibration isolation of an engine or other equipment. The damper comprises an upper end cover, an outer cylinder body, a piston rod, a sealing ring, a sealing bolt, a working cavity, a lower end cover and a piston head, and is characterized in that the damper also comprises a magnetic-isolation sleeve, a coil, an upper spacing spring, an auxiliary piston head, an inner cylinder body and a lower spacing spring, wherein the working cavity is divided into an inner working cavity and an outer working cavity by the inner cylinder body; the working cavity is filled with magneto-rheological liquid; the auxiliary piston head and the piston head connected to the piston rod respectively extrude the magneto-rheological liquid back and forth in the two working cavities to generate radial flowing so as to generate damping force; and the coil is arranged between the outer cylinder body and the magnetic-isolation sleeve to provide a magnetic field so as to regulate the magnitude of the damping force in real time. The output force of the multistage extrusion-type magneto-rheological damper is much more than that of a common magneto-rheological damper, and especially, the impact generated when the equipment is greatly and intensively vibrated under the severe environment can be avoided. The multistage extrusion-type magneto-rheological damper has the advantages of reasonability in design, simple construction, high efficiency, high response speed, high working reliability, good vibration damping effect and long service life.
Owner:JILIN UNIV

Novel bridge inspection vehicle

The invention relates to a novel bridge inspection vehicle, which is a travelling crane applied to inspection of the inner side or bottom of a truss bridge in a manner of a rotary folding vehicle body. The inspection vehicle body is composed of a middle vehicle body and additional vehicle bodies on cantilevers at two sides together, wherein the vehicle body and the additional vehicle bodies are mutually connected through a rotating hinge and a fixing pin, and a wheel mechanism is arranged above the vehicle body. The inspection vehicle walks and works under the track on which the bridge is vertically arranged in an unfolding manner in general; a hand shank is rotationally opened and closed when the inspection vehicle comes across a lateral coupling system member in a truss or a pier support; and the additional vehicle bodies on the cantilevers at two sides horizontally rotate oppositely, and are overlapped on the front and back parts of the vehicle body, and the vehicle body is folded and shortened into 1/3 of original length and then traverses an obstacle. According to the invention, an inspection work surface is expanded and the inspection vehicle can extend to the outer side of the truss to work. The distance between the tracks is wide, and the vehicle body and the tracks are directly connected by the wheels, so the inspection vehicle is stable in structure when walking and working. The novel bridge inspection vehicle has the advantages of being simple in structure, convenient to use, economic and practical, and has been successfully applied to engineering practice.
Owner:CHINA MAJOR BRIDGE ENERGINEERING

SCARA robot special for screw assembly

The invention discloses an SCARA robot special for screw assembly. The SCARA robot comprises a tail end actuating mechanism, a wrist part, an elbow part, a shoulder part, a shoulder part lifting mechanism and a machine base. The tail end actuating mechanism comprises a screw retreating groove nozzle, a screwdriver, an end cover, a bottom cover and an electric drill tail end actuating mechanism lifting frame. The wrist part comprises a wrist part auxiliary plate, a wrist part composite bearing, a wrist part connecting cover, a wrist part main plate and wrist part reinforcing ribs. The elbow part comprises a first motor, a first motor connecting cover, an elbow part main plate, an elbow part composite bearing and an elbow part connecting cover. The shoulder part comprises a second motor connecting cover, a second motor, a shoulder part main plate, shoulder part reinforcing ribs, a shoulder part auxiliary plate, a shoulder part sliding plate, shoulder part sliding grooves and a threaded cover. The shoulder part lifting mechanism comprises a third motor, a third motor connecting cover, a third motor coupler, a lead screw, a shoulder part lifting mechanism main plate, sliding groove fixing rods, sliding grooves and the like. The machine base comprises a fourth motor, a machine base composite bearing, a machine base cylinder and a machine base bottom plate. The SCARA robot is novel in design, safe and reliable.
Owner:ANHUI UNIV OF SCI & TECH
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