42results about How to "Reduce wobble" patented technology

The invention relates to a floating platform stabilizer which can stabilize an ocean floating platform by relevant mechanisms under high sea conditions and accordingly reduce pull force of a platform for mooring cables. The floating platform stabilizer comprises a winch, a chain stopper and a solid steel ball. The winch is connected with the solid steel ball through a steel cable and controls chain length of the solid steel ball. The chain stopper is arranged between the solid steel ball and the winch and fixes chain length of the solid steel ball. The solid steel ball is connected with a lowermost deck of a floating platform in a suspended manner. When the floating platform encounters extremely severe sea conditions, oscillation and shift of the platform body can be reduced by the floating platform stabilizer, pull force of the mooring cable can be reduced, feasibility of the floating platform under the severe sea conditions is improved, and platform safety is guaranteed.

The invention discloses an offshore floating island. The offshore floating island comprises a plurality of floating platform modules, offshore operation platforms, lower frame bodies and a mooring system, wherein all floating platform module are provided with main floating body frames formed by closed annular columnar floating bodies, the offshore operation platforms are arranged above the main floating body frames and are used for carrying various offshore operation buildings, the lower frame bodies formed by annular floating bodies below the main floating body frames, the offshore operationplatforms and the main floating body frames are connected with the lower frame bodies and the main floating body frames through longitudinally extending hollow connecting structures, and the hollow connecting structure is formed by floating bodies with hollow structures; the water discharge amount of the main floating body frames is larger than the total weight of the structures of floating platform modules, a mooring rope or an anchor chain connected with two adjacent floating platform modules, passage channels are arranged between floating platform modules and are used for carrying out personnel and cargo circulation, and the mooring system is used for fixing each floating platform module in a destination sea area. According to the offshore floating island, the offshore floating island group and a construction method of the offshore floating island, the offshore floating island has the advantages of being low in construction difficulty and cost, higher in storm resistance and capableof adapting to the self-adjusting capability of sea conditions.

The invention relates to the technical field of navigation, and discloses a navigation display screen support capable of keeping balance and preventing vibration, which comprises a base, a supportingplate is rotatably connected to the center of the upper surface of the base, a mounting frame is rotatably connected to the upper end of the supporting plate, and a rotating shaft is rotatably connected to the circle center of the mounting frame. An air duct is formed in the mounting frame, a one-way valve is rotatably connected into the air duct, an air pump is fixedly connected into the end of the air duct, an air inlet hole is formed in the end, away from the air pump, of the air duct, and an air pipe is fixedly connected to the outer side of the air inlet hole. The air pump is fixedly connected to the interior of the air duct, and air in the telescopic rod on the other side is pumped into the telescopic rod on the pressed side, so that the interior of the telescopic rod on the pressedside can be pressurized when the display screen inclines, the telescopic rod is stretched, and the display screen is pushed to be in a horizontal state; therefore, a driver can still observe the navigation information on an inclined road surface.

The invention belongs to the technical field of engine shell auxiliary machining devices, and especially relates to an engine cylinder body carrying gripper with a self-adjusting function. The grippercomprises a cylinder body and a pressing disc. A group of lifting lugs are arranged at a top of the pressing disc, and a bottom of the pressing disc is fixedly connected with a round rod, the bottomof the round rod is fixedly connected with a hollow expansion ball. An air pipe fixedly connected to the top of the pressing disc is connected with the expansion ball through a vent hole. After the round rod is inserted into a cylinder barrel of the cylinder body, the expansion ball expands to quickly fix the cylinder body, and cylinder body carrying efficiency is improved. The round rod and the expansion ball are inserted into the cylinder barrel on the cylinder body so that the pressing disc is tightly attached to one side of the cylinder barrel, then compressed air is introduced into the expansion ball through the air pipe and the vent hole, the expansion ball is matched with the pressing disc to clamp the cylinder barrel after expanding, and fixing and carrying efficiency of the carrying gripper to the cylinder body is improved.

The invention discloses a small waterplane area twin-hull ship type marine monitoring buoy platform which comprises two torpedo-shaped lower submerged bodies, an upper hull platform and a streamline strut, wherein the torpedo-shaped lower submerged bodies are placed underwater and provide most of buoyancy; the upper hull platform is above the water surface; the streamline strut connects the lower submerged bodies and the upper hull; fixed rudders for positioning are arranged at the rear parts of the lower submerged bodies; a multisection type streamline probe box which is connected to the lower end of the upper hull platform is arranged between the two lower submerged bodies; the side surface of the multisection type streamline probe box is provided with a small hole through which the water flows; the multisection type streamline probe box is set to be easy to separate from the upper hull platform under the impact of external force; each section of the streamline probe box is provided with an anchor bolt, each anchor bolt is fixedly connected with an anchor chain, and an anchor is connected to each anchor chain. The invention has the advantages of good sea area adaptability, small splashing area volume, strong wind and wave resistance, good stability, large load, large platform area, small resistance in waves, sufficient energy supply, good equipment expansibility, convenient maintenance, and the like.

The invention discloses a static power exchange thighbone intramedullary nail, which comprises a nail main body, wherein a coronal plane at the far end of the nail main body is provided with a first sliding lock hole and a third sliding lock hole; a vertical plane at the far end of the nail main body is provided with a second sliding lock hole and a fourth sliding lock hole; the first sliding lock hole, the second sliding lock hole, the third sliding lock hole and the fourth sliding lock hole are long holes; the end part of the long holes are circular-arc-shaped; the third sliding lock hole is longer than the first sliding lock hole; the fourth sliding lock hole is longer than the second sliding lock hole; the vertical plane at the far end of the nail main body is provided with a positioning platform; and the center of the positioning platform is provided with a third static lock hole. Due to the adoption of the static power exchange thighbone intramedullary nail disclosed by the invention, early static fixation of bones can be realized, motorization can be performed in case of delayed healing of bone fractures, static fixation is performed after motorization is performed appropriately, motorization can be performed once again, static fixation is performed after motorization is performed appropriately, and controllable adjustment is performed on dynamic and static fixation, so that rapid healing of bone fractures is facilitated.

The invention provides a noise reduction device for a sewing machine, which includes a main shaft, a driving motor for driving the main shaft to rotate, and a hand wheel. The driving motor has a motor rotor and a motor stator that cooperate with each other. The main shaft has a rotor shaft section that constitutes a part of the motor rotor. It also includes a driving shaft coaxial with the main shaft, one end of the driving shaft is fixed to the hand wheel; when the driving motor is running and the driving main shaft is rotating, the other end of the driving shaft is separated from the rotor shaft section; when the driving motor stops, the When the handwheel drives the main shaft to rotate, the other end of the drive shaft engages with the rotor shaft section. This application can realize the detachability of the main shaft and the hand wheel, effectively shorten the length of the main shaft, and then reduce the processing difficulty of the main shaft; especially, in the process of driving the main shaft to rotate by the driving motor, the main shaft and the hand wheel are in a separated state, so the hand wheel Both the sewing machine and the drive shaft are in a static state, thereby effectively reducing the noise of the sewing machine, reducing the swing of the main shaft, and improving the stability of the main shaft.

The invention discloses an environment-friendly type concrete mixing plant which can recycle wastewater generated in production as mixing water for producing concrete. A precise weighing water inlet tube is arranged in a high-precision water supply weighing device, so that water can be supplied to a water tank through the precise weighing water inlet tube at the tail stage of water supply weighing; a coarse weighing water inlet tube extends into the bottom of the water tank, a buffer hole plate is arranged at a water outlet of the coarse weighing water inlet tube; the water outlet of the precise weighing water inlet tube is horizontally formed, so that impact, on the water tank, of inlet water can be reduced; and two weighing sensors, a guide column and a guide sleeve are arranged on a beam, so that water tank swing and shake further can be reduced; and a buckled-weighing leakage tube is further arranged, so that precise buckled-weighing is realized. The environment-friendly type concrete mixing plant can improve water supply precision, and improves concrete quality.

The invention discloses a lifting appliance swing preventing system for a crossing type double-trolley quay crane. The system comprises an upper trolley lifting appliance swing preventing device and a lower trolley lifting appliance swing preventing device. Each of the upper trolley lifting appliance swing preventing device and the lower trolley swing preventing device comprises a bottom frame, a torque motor, a swing preventing winding drum and a swing preventing steel wire rope, wherein each torque motor and the corresponding swing preventing winding drum are in transmission connection, each torque motor and the corresponding swing preventing winding drum are fixedly arranged on the corresponding bottom frame, one end of each swing preventing steel wire rope is wound around the corresponding swing preventing winding drum, and the other end of each swing preventing steel wire rope is fixedly connected with a corresponding lifting appliance. According to the lifting appliance swing preventing system, stable operation of an upper trolley and a lower trolley in the crossing type quay crane can be guaranteed, the shake and the swing of the upper trolley lifting appliance and the lower trolley lifting appliance are effectively reduced, operation of the upper trolley and the lower trolley cannot be affected, and the mutual interference of the upper trolley and the lower trolley is avoided. The swing preventing steel wire ropes in the system do not bear the tension in the normal using process and can effectively operate for a long time, and the lifting appliance swing preventing system is simple in arrangement, stable in operation and low in initial investment and operation maintenance cost.

A device for reducing liquid sloshing in the moon pool of marine engineering structures. The diversion cover fixed on the inner wall of the moon pool, the diversion cover includes an outer shell fixedly connected with the inner wall of the moon pool, an inner shell, a plurality of vertical ribs and a plurality of arc-shaped transverse ribs, the outer shell Both the body and the inner shell are trumpet-shaped, the inner shell is set between the outer shell and the inner wall of the moon pool, and a plurality of vertical ribs are evenly distributed radially between the outer shell, the inner shell and the inner wall of the moon pool In between, multiple arc-shaped transverse ribs are fixed in layers and intervals between the outer shell, the inner shell and the inner wall of the moon pool, and the outer shell and the inner shell are covered with multiple rows of round ribs from top to bottom. hole. The invention has a simple structure, and the guide cover or multi-layer wave-dissipating rings or series of arc-shaped wave-dissipating plates can effectively prevent waves from climbing up, prevent deck overflow from occurring, reduce the formation of vortices in the moon pool, and improve the hydrodynamic performance of the ship. The coupling effect between seawater and structures is weakened, and the sway of marine engineering structures is weakened.

The disclosure provides a small ship vibration damping system, which belongs to the technical field of hydraulic pressure. The small ship vibration damping system includes a power unit, a three-position four-way reversing valve, an energy storage unit, a compensation unit and a damping oil cylinder; the power unit includes a pump set, and the oil inlet of the pump set is connected to the oil tank of the small ship damping system; The middle function of the three-position four-way reversing valve is O-type, the oil inlet of the three-position four-way reversing valve is connected with the oil outlet of the pump unit, and the oil return port of the three-position four-way reversing valve is connected with the fuel tank. The first working oil port of the three-position four-way reversing valve communicates with the rodless chamber of the damping cylinder, and the second working oil port of the three-position four-way reversing valve communicates with the rod chamber of the damping cylinder; the energy storage unit includes The accumulator; the compensation unit includes a first sequence valve, a two-position two-way reversing valve, a three-position three-way reversing valve, a second sequence valve and a third sequence valve. The present disclosure can reduce the shaking and swinging of small ships when berthing.

The invention discloses a deviation-correcting embossing rewinding machine for aluminum foil production, which includes a tracking monitor, a brush edge mechanism and a pneumatic constant pressure arm, and also includes an embossing mechanism, two symmetrically arranged winding and unwinding mechanisms and a deviation-correcting mechanism. The rewinding and unwinding mechanism and the deviation correction mechanism are uniformly arranged in a rewinding and unwinding cabinet, the unwinding and unwinding cabinet is thickened with a thicker plate, and an electrical control cabinet is installed between the two rewinding and unwinding cabinets, and the embossing mechanism is fixed at the front of the electrical control cabinet , There is also a center reel on the electrical control cabinet, the center reel is driven by the central reel motor installed in the electrical control cabinet, a brush edge mechanism is set on the upper corner of the electrical control cabinet, and a pneumatic constant pressure arm is set on one side, The other side is equipped with a tracking monitor; the tracking monitor, brush edge mechanism, dynamic constant pressure arm, embossing mechanism, unwinding mechanism and deviation correction mechanism are all connected to the electrical control cabinet, which is uniformly regulated by a unified controller, which greatly improves work efficiency.

The invention belongs to the technical field of high-performance ships, and relates to a planing boat type, in particular to a longitudinal flow transitional semi-planing boat. When the longitudinal flow transitional semi-planing boat of the present invention sails at a relatively high speed in a transition state, the air enters from the bell mouth of the bow under the action of ramming and mixes with the water flow at the bottom of the boat to form a water-air mixture. The effect of lubrication and drag reduction has been achieved. The straight-walled side of the boat reduces the wave-making of the hull, which has the effect of reducing the pressure difference resistance. Compared with the channel planing boat, the wet surface area of ​​the present invention is small at medium and low speeds, so its frictional resistance is also relatively small. Compared with the single-body planing boat, the present invention has a wider deck area for loading, and at the same time, because the bottom has a certain transverse slope angle, which is equivalent to increasing the "deep V degree" of the bottom of the planing boat, it is beneficial to reduce the Rocking and slapping in the waves improves directional stability.

The invention discloses a seabed drilling rig retracting device. A supporting mechanism is fixed to a rear deck of a mother ship, a drilling rig bracket is hinged to oil cylinder supporting bases in the supporting mechanism, two retracting oil cylinders are hinged to the two parallel oil cylinder supporting bases respectively, and the drilling rig bracket can rotate by 90 degrees under the driving of the retracting oil cylinders. A V-shaped opening is formed in a beam impact resisting mechanism on the drilling rig bracket, a plate turning mechanism is hinged to the beam impact resisting mechanism on the drilling rig bracket, the plate turning mechanism on the drilling rig bracket can be opened and closed, two clamping blocks can be driven to move by driving two plate turning and clamping oil cylinders respectively, and thus the plate turning mechanism can be clamped and loosened. Two beam guide hook assemblies in a beam guide hook mechanism on the drilling rig bracket can swing clockwise or anticlockwise around a fixed shaft by a certain angle under the driving of two beam guide hook oil cylinders. Through the seabed drilling rig retracting device, a seabed drilling rig can be retracted more safely and reliably in the whole process, and the seabed drilling rib retracting device further has the advantages of being simple and compact in structure, and convenient to operate, control and manufacture.