249results about How to "Increased lifting capacity" patented technology

A gas end surface sealing structure with three-dimensional feather-like textured bottom shaped grooves comprises a dynamic ring and a static ring which are used for sealing a mechanical end surface. As for the dynamic ring and the static ring, at least one sealed end surface is provided with a plurality of three-dimensional shaped grooves. Non-grooved areas among the three-dimensional shaped grooves serve as sealing weirs. Each three-dimensional shaped groove consists of a pumping groove and a spiral groove which are provided with bottoms similar to feather texture features. The pumping grooves are radially distributed and positioned at the upstream part of the sealed end surface. The depths of the pumping grooves are gradually reduced from upstream parts to downstream parts. The pumping groove is connected with the spiral groove. Spiral angles of spiral lines at windward lateral walls of the spiral grooves are greater than the spiral angles of spiral lines at leeward lateral walls. The depths of the spiral grooves are gradually reduced from upstream parts to downstream parts. A continuous planar ring-band sealing dam is arranged at downstream parts of the spiral grooves. The gas end surface sealing structure has the advantages of strong static pressure and dynamic pressure effect of fluid on the end surface, good low-speed start-up performance, excellent pressure resistibility, strong anti-articulation capability, little leakage and good wearability.

An improved plunger lift apparatus having an internal orifice, nozzles and exit apertures. The present invention relates to an improved plunger lift apparatus for the lifting of formation liquids in a hydrocarbon well. More specifically the improved plunger consists of a plunger apparatus that operates to propel one or more jets of gas through one or more internal orifices and/or nozzles, out through an aperture and into the liquid load formation, thereby providing a momentum transfer of the gas into the liquid load and causing a gaseous and turbulent aeration to the formation during lift. This action allows a large liquid formation load to be carried to the well top by the plunger at an increased level of efficiency resulting in an improved well productivity level.

A method of performing an under water operation on a structure (10) or in the vicinity of the structure includes providing a device (18) having a movable arm (20) and at least a first support (22) constructed to be connected to the structure, the movable arm (20) directly or indirectly connected at a proximal end (34) to the support, the first movable arm having a first tool (30) connected to a distal end (36) of the first movable arm, at least one actuator (33) configured to controllably move the first tool (30) in a three dimensional working range in order to position the first tool at a target location, attaching the device to the structure via the at least one support, and-moving the tool in three dimensions and performing an operation under water.

The invention discloses a folding jib structure and a method for unfolding and folding the same. The folding jib structure comprises a principal arm (10), a support bar mechanism (20) and a fly jib (30) that are arranged on the principal arm, and a steel rope (40) reeled by a hoist and supported by the support bar mechanism support. The fly jib comprises a fly jib front segment (31) and a fly jibrear segment (32) that are in pivotal connection with each other; and one end of the steel rope is detachably connected to the fly jib. The folding jib structure also comprise a pulling plate (50), which includes at least a first portion (51) and a second portion (52) that are in detachable and pivotal connection; and the first portion and the second portion are respectively connected with the fly jib front segment and the support bar mechanism. According to the above technical scheme, the fly jib can be folded or unfolded through the pulling plate and the steel rope, so as to enhance hoisting performance and lower requirements on the steel rope strength. Besides, auxiliary equipment like an auxiliary crane is omitted, and manual dangerous operation is not needed.

The invention relates to a multifunctional crane excavator which has both the hoisting function and the excavating function. By using a chassis of a crawler excavator as an excavator body, the multifunctional crane excavator is provided with a main arm, an auxiliary arm, a balance arm, a supporting seat, a derricking hydraulic cylinder, a main hydraulic winch, an auxiliary hydraulic winch and a balance weight. A gravitational moment which is generated when the multifunctional crane excavator carries out lifting and excavating operations is balanced by a gravitational moment of the balance arm at the other end of the supporting seat; the gravitational moment which is generated during lifting and excavation does not act on the body of the multifunctional crane excavator fully, the roll-over action on the multifunctional crane excavator is very small, therefore, the safety under the condition of the same lifting and excavating capability is improved. Accordingly, the invention is quite suitable for application in special lifting sites and special excavating operations.

The invention provides a rotary counter weight mechanism comprising a rack, a counter weight unit and a driving device; the counter weight unit and the rack are hinged by using a pin shaft; and the driving device is used for driving the counter weight unit to swing relative to the rack. Therefore, the lifting property is improved without increasing the weight of the whole crane or changing the contour dimension; and the crane is simple in structure, excellent in safety and low in manufacturing cost.

The invention discloses a hanging-hoisting device for wet leather conveying, and relates to the technical field of leather transportation. The hanging-hoisting device for wet leather conveying comprises a slide rail, wherein a slide block adapting to the rail of the slide rail is arranged in the rail; the two ends of the slide block are fixedly connected with a wheel carrier; a rolling wheel is movably connected to the wheel carrier through a rolling shaft, and contacts with the inner wall of the slide rail; and two limit blocks are fixedly installed at the bottom of the inner wall of the slide rail, and a rolling ball is movably installed between the two limit blocks. The hanging-hoisting device for wet leather conveying is simple and convenient to operate; through arrangement for the interior of a lifting box, leather is gripped by a gripper for hoisting through an automatic telescopic rod while being hung; and moreover, an effect of lifting the leather at any time is achieved under the mutual cooperation of a rotary disc, a vertical rod, a first support arm and a second support arm, thus the labour intensity is greatly reduced, the production efficiency is increased, and flow-line production can be realized.

The invention provides a deep well gas injection supercharging mechanical oil extraction method and device, which belongs to the method or equipment technique field for extracting oil from well, and solves insufficient lifting ability problem of prior mechanical oil extraction method and device, the method uses a deep well gas injection supercharging oil extraction device, and specifically includes the steps of: connecting a sealing base, a supercharging oil extraction pump, a pump fastening rack, a packer, a filter tube valve and a filter tube to the oil conduit, placing the oil conduit into the well bore casing tube, and fastening the pump-fastening rack; injecting liquid into the annular spacing between the oil conduit and casing tube, testing pressure and relieving pressure; injecting gas into the annular spacing between the oil conduit and the air injection tube, discharging liquid from the gas injection tube; installing wellhead equipment, adjusting pressure and air flow of pumped air, sampling humidity and oil content of analysis gas, calculating quantity of production. The method and device provided by the invention use gas as power medium for periodic duty recyclablely, which causes the lifting pressure up to 2-5 times of gas pressure, and the process flow is simple and is suitable for oil extraction of deep well and mechanical oil extraction of thick oil well.

The invention discloses a miniature crane, which comprises a jib and a hook. The hook is hung to the jib top by a lifting rope. The crane also includes a pedestal, a slewing mechanism and a rotary table. The slewing mechanism can slew at any angle within 360 degrees, and includes a slewing shaft and a shaft sleeve in rotation connection. The jib is hinged to the front side of the slewing shaft, the rotary table is fixed to the rear side of the slewing shaft, and the shaft sleeve is fixed on the pedestal. The pedestal and the rotary table both adopt a box structure. The inside of the rotary table is provided with a worm-gear luffing mechanism and a worm-gear hoisting mechanism. The housing of the rotary table is in rotation connection with a crank handle that is connected to the worm-gear luffing mechanism. By setting the slewing mechanism able to slew at any angle within 360 degrees, the miniature crane of the invention realizes expansion of the movement range of heavy objects from two dimensions to three dimensions.

The invention provides a raw oil lifting system and a method for conveying a fluid by utilizing a sliding vane pump. The raw oil lifting system comprises an oil pipe and an oil pump connected with the oil pipe, wherein the oil pump is the sliding vane pump; the sliding vane pump is provided with a barrel-shaped stator; a drive shaft arranged in the stator along a direction parallel to the length of the stator, and a rotor sleeved onto the drive shaft are arranged in the stator; the lower end of the stator is provided with a suction disk; the upper end of the stator is provided with an exhaustion disk; the suction disk, the exhaustion disk and the stator form a barrel-shaped inner cavity; the rotor is arranged between the suction disk and the exhaustion disk; the suction disk is provided with a suction hole for sucking raw oil; and the exhaustion disk is provided with an exhaustion hole for exhausting the raw oil. The method for conveying the fluid by utilizing the sliding vane pump comprises the steps of sucking and exhausting the fluid from the direction of the end part of the stator to perform a lifting process.

The invention discloses a superlift device and further provides a crane which is provided with the superlift device. The superlift device comprises a telescopic arm, a superlift support, a first tension device, a second tension device and a third tension device, wherein a fixed end of the superlift support is connected with the telescopic arm, the first tension device is arranged between a movable end of the superlift support and the end portion of the telescopic arm, the second tension device is arranged between the movable end of the superlift device and the root portion of the telescopic arm, one end of the third tension device is connected with the telescopic arm, a connecting point of the end of the third tension device and the telescopic arm is located between the end portion of the telescopic arm and a connecting point between the telescopic arm and the fixed end of the superlift support, and the other end of the third tension device is connected with the movable end of the superlift support. By means of the technical scheme, when the crane lifts a too heavy object or an erector arm extends out too long, defects of insufficient support force and unstable erector arm caused by the fact that the telescopic arm bends to one side due to the tension which is endured by the telescopic arm can be overcome, and the lifting performance is improved.

The invention belongs to the technical field of aluminum alloy profiles and particularly relates to a manufacturing method for producing an aluminum alloy mechanical arm track girder hollow profile through an aluminum alloy replacing rolled steel. The manufacturing method comprises the steps that firstly, the intensity and the capacity of resistance to deformation of a steel cross beam are evaluated; secondly, the aluminum alloy is selected; thirdly, the structure of the aluminum alloy mechanical arm track girder hollow profile is designed; fourthly, the movement track and deformation of the aluminum alloy mechanical arm track girder hollow profile in a stressed state are simulated through a computer; fifthly, a mould of the aluminum alloy mechanical arm track girder hollow profile is manufactured; sixthly, the aluminum alloy mechanical arm track girder hollow profile is extruded and quenched online; seventhly, the aluminum alloy mechanical arm track girder hollow profile is aged; eighthly, the aluminum alloy mechanical arm track girder hollow profile is sampled; ninthly, the aluminum alloy mechanical arm track girder hollow profile is riveted; and tenthly, the aluminum alloy mechanical arm track girder hollow profile is packaged and delivered, and the aluminum replaces the steel to produce the aluminum alloy mechanical arm track girder hollow profile.

The invention relates to a novel lower chamber device. The lower part of the novel lower chamber device is provided with double crawler travel mechanisms. A frame is arranged between the double crawler travel mechanisms. The upper part of the frame is provided with a rotating platform. The rotating platform is provided with a cab. The rotating platform at the rear of the cab is assembly connected with the lower end of a telescopic suspension arm. The rotating platform is provided with a lifting mechanism. The lifting mechanism is matched with the telescopic suspension arm. The rotating platform is also provided with a telescopic counterweight mechanism. When the novel lower chamber device is used for operating under the cabin, two modes of complete counterweight extension and complete counterweight shrinkage can be realized, wherein the counterweight extends completely to improve the lifting performance; and the counterweight shrinks completely to improve conformability for the space.

The invention discloses a borehole cleaning tool for horizontal-section gas drilling. The borehole cleaning tool consists of a main body, spiral flow channels, alloy teeth and joints, wherein two ends of the main body are the joints; the spiral flow channels are located in the main body; the spiral flow channels comprise a front spiral flow channel which takes up one third of the length of the spiral flow channel and a rear spiral flow channel which takes up two thirds of the length of the spiral flow channel; unequal-diameter alloy teeth are respectively embedded into the strengthening bars of the front spiral flow channel and the rear spiral flow channel; an inclined U-shaped groove of which the cross section is 2cm to 4cm deep is formed in the rear spiral flow channel. According to the borehole cleaning tool, as the spiral flow channels which are of a composite structure respectively are adopted, the flow speed of gas is increased, and the orbiting flow of an annular air body is enhanced; the windward sides of the spiral flow channels are respectively provided with the inclined U-shaped groove, so that a great deal of rock waste is annularly hoisted in the sky; as the different-size alloy teeth are respectively embedded into the strengthening bars of the spiral flow channels, the grinding of rock waste in rotation is enhanced; the borehole cleaning tool is reliable in principle, rational in structure, and applicable for a horizontal borehole drilling technology under the working conditions of gas drilling and fluid drilling, thereby having a broad market prospect.

The invention relates to the technical field of piling machinery, and discloses a grab bucket grooving machine for a continuous wall. The grab bucket grooving machine for the continuous wall comprises a chassis, an upper vehicle body arranged on the chassis, and an arm frame hinged on the upper vehicle body, wherein the arm frame comprises a fist part and a second part which are connected with each other, the first part has a box type structure, and the second part has a truss structure. The grab bucket grooving machine for the continuous wall provided by the embodiment of the invention has the functions of cranes, can work under a grooving operation mode, and also can work under a hoisting operation mode, so that the construction efficiency is improved, and the construction cost is lowered.

The invention discloses a traveling crab and a crane. The traveling crab comprises a trolley frame, traveling driving mechanisms and lifting driving mechanisms; the traveling driving mechanisms are arranged at both end parts of the trolley frame and are used for driving the trolley frame to move; and the lifting driving mechanisms are arranged at both end parts of the trolley frame. The traveling crab has the advantages of simple structure, low cost, good stable performance and the like.

The invention discloses a moveable hoisting machine and a construction method thereof, belonging to the technical field of engineering machinery. The moveable hoisting machine of the invention comprises a top beam; a driving device is fixed on the top of the top beam, and is in transmission connection with a rotating seat through a transmission shaft; four lifting arms are fixed on the peripheralside surface of the rotating seat; one end of the transmission shaft penetrates the top beam and is rotatably connected with the top beam; the top of the top beam is fixedly provided with a support turntable; the top of the support turntable is connected with a revolution turntable through a revolving member; the peripheral side surface of the transmission shaft is provided with a flange; the transmission shaft is fixedly connected with the revolution turntable through the flange; the top end of the transmission shaft is fixedly provided with a fluted disc; and the bottom end of the transmission shaft is in flanged joint with the rotating seat. The moveable hoisting machine of invention can carry out revolving motion on the top beam in virtue of the rotating seat, and as the retractable lifting arms are arranged at different directions of the rotating seat, the moveable hoisting machine has the functions of revolution, retraction and multi-point simultaneous working; thus, the moveablehoisting machine has the advantages of a wider working range, higher working efficiency, stronger hoisting capacity and better flexibility in use.

A wing opening van body comprises a bottom plate, a top plate, a side plate and openable wing plates which are arranged on both sides of the top plate. A switch device of the wing plates comprises an elastic mechanism and a manual mechanism. The elastic mechanism is arranged on the top of the van body and comprises an elastic element and an interlocking rod mechanism, when the wing plates are in closed state, the compressed elastic element generates upward thrust to the wing plates through the interlocking rod mechanism when the wing plates are opened; the manual mechanism is arranged on the outer surface of the end part of the van body and comprises a drive handle and a transmission rod mechanism, the transmission rod mechanism is equipped with a self-locking speed reducer, and the moment generated by the drive handle drives the wing plates to be opened, closed and suspended through the transmission rod mechanism. A transport vehicle and a container are provided with the wing opening van body. The wing opening van body overcomes the problem that bidirectional limitation and stable opening and closing can not be realized in the prior art, and ensures smooth and safe operation.

The invention relates to an electrical control device for a crawler-type counter weight trolley, comprising a main machine control component arranged on a main machine of a crane and a counter weight trolley control component arranged on a counter weight trolley of the crane, wherein the main machine control component comprises a right main machine crawler travelling motor rotating speed sensor, a left main machine crawler travelling motor rotating speed sensor, a main machine controller and a main machine rotation angle displacement sensor; the counter weight trolley control component comprises a right counter weight trolley crawler travelling motor rotating speed sensor, a left counter weight trolley crawler travelling motor rotating speed sensor, a counter weight trolley controller anda counter weight trolley rotation angle displacement sensor; and the main machine controller and the counter weight trolley controller are connected to communicate by virtue of a CAN bus. By adoptingthe electrical control device provided by the invention, synchronous control on the main machine and the counter weight trolley is realized, and actions of the main machine and the counter weight trolley are combined to generate diversified operating modes, thus the automation strength is improved, the lifting capacity is improved, a counter weight is convenient to move, and the problem that desynchronization is caused by adverse impact of personal factors can be avoided.

The invention provides a crane, and a method and device for controlling a super-lifting derricking oil cylinder of the crane. The control method comprises the following steps of: acquiring a first included angle between a super-lifting mast and a lifting arm of the crane and a second included angle between the lifting arm and a horizontal plane in real time; calculating a real-time oil pressure for overcoming the self weight of the super-lifting mast when the lifting arm is in the second included angle and the super-lifting derricking oil cylinder is in the first included angle; and setting a safe working pressure of the super-lifting derricking cylinder in real time according to the real-time oil pressure. According to the method provided by the invention, the safe working pressure of the super-lifting derricking oil cylinder is set according to the real-time oil pressure corresponding to the first included angle and the second included angle, so that the pressure value of the super-lifting derricking oil cylinder does not need to be kept in a maximum working pressure state of the system, deformation of structural components such as super-lifting pedestals or accidents caused by pressure surge of the system due to unexpected circumstances can be prevented, a super-lifting structure does not need to be designed large, and the lifting capability of the whole crane is improved.