Hydraulic cylinder with mechanical lock at piston extreme positions |
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IPC classes for russian patent Hydraulic cylinder with mechanical lock at piston extreme positions (RU 2458817):
 Rowing boat / 2457978
Invention relates to building of rowing boats. Proposed boats comprises hull with one oarlock per one single-back per with counterweight (double bank). Oar blade and oarlock are arranged on opposite side of hull axis (on different boat sides).
 Water-jet propeller / 2457148
Invention relates to sport and touristic surface and submerged water-borne vehicles. Water-jet propeller has closed body, plate-valve water intake devices, channel of outflow acceleration, system for connecting to propelled object, propellant expulsion module, propellant expulsion module control system. System for connecting to propelled object is made of belts for shank binding and foot pads located at outside of body. Propellant expulsion module is made as stretching train, muscular drive of tail stretching device, and freewheel clutches. The train consists of fastening train tail, several interconnected in series pneumatic components of train and non-stretching train sheet. Train sheet in its upper part is attached to muscular drive of train tension device in the form of spool. The spool is immovably slipped over working shaft installed inside body in its upper part. Freewheel clutches are mounted on working shaft at both sides of spool and equipped with rotation mechanism. Propellant expulsion module control system consists of train locking in tensioned condition assembly and train locking assembly release mechanism. Release mechanism is made as mechanical connection of train locking assembly with drive. The drive is made as propellant expulsion module control pedal. The pedal is mounted at outside of propellant body near foot pad.
 Wheel-type powerhelm unit of artic voyage ship / 2456201
Invention relates to water transport. Powerhelm unit comprises two paddle wheels mounted at head and two wheels at end, paddle wheel depth adjustment device, and device to reduce negative pressure under ship in shallow water. Floats are rigidly mounted on paddle wheels in symmetry about ship centre plane. Every paddle wheel has independent-control drive. Floats extend relative to wheel axes. Paddle wheels feature variable diametre to be inscribed in truncated cone with diametre increasing from side to centre plane and axes out of ship centre plane square. Floats feature screw shape with optimum entrance angles in side zone and exit angles in ship centre plane. Floats are made up of shell cylindrical surfaces secured onto star-like discs. Toothing is made on float edges. Float paddle wheel width exceeds ship hull design waterline width. Ship head paddle wheel teeth represent hexagon barrel with cutting tools clamped therein. Device to reduce negative pressure under ship in shallow water includes aerator tube with air intakes. Paddle wheels are furnished with diffusion nozzle.
 Centrifugal pulling equipment / 2455525
Centrifugal pulling equipment includes rotor and stator with one or more channels for passage of the working medium via them. Channels of rotor have inlet ends which are the closest ones to rotation axis and the outlet ends which are the most distant from the rotation axis. Inlet ends of the stator channels are combined in axial direction with outlet ends of the rotor channels. Outlet ends of the stator channels have the directions which are not parallel to the plane which is perpendicular to rotor rotation axis.
 Water-jet propeller / 2455191
Invention relates to railroad transport. Proposed propulsor consists of profiled water conduit 2 and propeller 3. Propeller is arranged at conduit inlet. Conduits integrity is broken by water intake circuit 4 at definite distance behind propeller.
Water-jet propeller / 2455191
Invention relates to railroad transport. Proposed propulsor consists of profiled water conduit 2 and propeller 3. Propeller is arranged at conduit inlet. Conduits integrity is broken by water intake circuit 4 at definite distance behind propeller.
 Hydro-jet / 2452654
Hydro-jet comprises combustion chamber, expansion (hydraulic) chamber, hydraulic valve and nozzle assembly. Expansion chamber is arranged below water level. Combustion and expansion chambers are communicated via one or several valves.
Hydro-jet / 2452654
Hydro-jet comprises combustion chamber, expansion (hydraulic) chamber, hydraulic valve and nozzle assembly. Expansion chamber is arranged below water level. Combustion and expansion chambers are communicated via one or several valves.
 Screw propeller of kalashnikov's design / 2452653
Screw propeller comprises a hub, adjoined blades, a water scoop and water intake vanes. The blades are of convex-concave cross section. Working surfaces of blades are made in the form of spiral sections and with an angle of inclination to the lower edges of the blades. The screw surface has a hollow truncated cone, where blades are installed. The profile of the blades, evenly swirling by 180 degrees, monotonously reduces when moving away from the screw axis.
 Inertial engine by bogdanov / 2449170
Inertial engine comprises at least one system with a propeller and a flywheel with a working medium. Around the flywheel there is a turbine, and the flywheel is made as capable to supply working medium to the inner working surface of the turbine. In another version around the flywheel there is a spiral or a ring with a chute on the inner surface facing the axis of the flywheel rotation, and at the outlet from the spiral or ring there is a hole with the possibility of discharge of the accelerated working medium from the hole.
 Reversible steering gear / 2244658
Proposed reversible steering gear has delivery branch pipe, water passages, deflectors, rudder stocks located in reversible steering box which is part of transom bulkhead. Astern running water passages are communicated with reversible steering box; they are formed by flat sheets and are rectangular in shape. One wall of water conduit is formed by vertical wall and opposite wall is formed by transom bulkhead. Reversible steering box has balancing dampers and semi-balancing deflectors.
 Propulsor / 2245278
Propulsor has two wheels of similar diameter at parallel pivot axles mounted at distance which is lesser than diameter of any wheel; blades are located between wheels and are connected with them by means of additional pivot axles.
 Marine propeller "kalmar" / 2245279
Proposed marine propeller belongs to propellers with reciprocating working member-piston and is used on surface ships and habitable submarine ships. Operation of propeller is based on principle of motion of sea mollusk squid using pulse reaction jet of water. Used as drive for working member-piston is engine working both on hydraulic fluid and on compressed air delivered from high-pressure bottles. Engine is installed on watercraft hull in fore, midship and aft sections for controllable turn in horizontal or vertical plane, thus ensuring motion of watercraft in any direction.
 Water-jet propulsion and steering complex / 2245818
Proposed complex includes water conduit, water intake, impeller with fairing of hub mounted on shaft, nozzle with circular inlet section, straightening unit including hydrodynamic streamlined profiled stanchions used for securing the hub fairing to nozzle and reversible steering gear consisting of swivel deflector located behind nozzle; lower portion of water intake is made in form of semi-circular profiled attachment. Cross sections of nozzle have form of circle segments after its inlet circular section at each section along axis downward of flow. Longitudinal section of walls of semi-circular part of water intake and lower parts of nozzle which is extension of water intake have hydrodynamically streamlined shape in form of wing profile whose rectilinear side is directed inside water conduit. Straightening unit is formed by walls of propeller nozzle, said fairing and profiled stanchions. Reversible steering gear is equipped with bounding plate located horizontally immediately after nozzle exit section at level of its upper wall. Free edges of said plate adjoin inner surface of swivel deflector. Reversible steering gear is provided with at least two rudders provided with drives and located vertically on either side within width of nozzle outlet section; rudders are located under bounding plate on which their stocks are installed.
 Device enhancing propulsive parameters of water-jet engines / 2247058
Proposed device includes profiled water conduit, shroud, pump and outlet nozzle. At least one ring of wing profile is placed in water conduit formed between shroud in aft extremity of ship and ship's hull coaxially relative to central axis of ship. Convex surface of ring is directed to ship's bow. Lower surface of ring is provided with artificial roughness and plate-type interceptor arranged along smaller radius of ring. When use is made of several rings, ring of larger diameter extends forward to ship's bow and ring of lesser diameter extends the least. Projection of lifting force arising on ring mounted at definite angle of attack relative to flow is directed in way of motion forming additional thrust. Inlet part of water conduit has form of contraction tube. Skin on water conduit in area of mounting of ring (rings) is profiled according to surface of flow of liquid. Proposed device makes it possible to obtain additional thrust no less than 15-20% of propulsor thrust.
 Mode of moving and joining to the support of an underwater object and an arrangement for its realization in the form of an underwater mover-sucker / 2252173
The invention serves for providing of realization of various underwater works near ships and other installations which have an underwater part. Water and air is given under pressure along a hose or a tube to a guiding apparatus through a funnel with a cone-shaped bushing fixed in with a clearance, providing even outflow of water and air in front of working surface through guiding apparatus. This outflow of water reduces pressure on the working surface and that helps to create a pulling force due to large magnitudes of pressure forces of surrounding motionless water on the opposite side of the working surface. According to this reason joining of the mover-sucker to the underwater support happens.
 Oar with threaded joint of handle and shaft / 2252897
Proposed oar has blade fixed to lever which is articulated with shaft whose other end is made in form of semi-gear thrown into engagement with semi-gear of handle; oar includes also rod mounted at angle relative to shaft and articulated with lever at one end and with plate-oarlock at other end, thus forming trapezoidal articulated system consisting of shaft, lever, rod and plate-oarlock. This system makes it possible to turn blade in first half of stroke gradually reducing the angle of attack of blade from maximum magnitude to zero and gradually increasing the angle of attack of blade from zero to maximum magnitude in second half of stroke.
 Water-jet propeller / 2256583
Proposed propeller has swivel nozzle connected with housing of straightening apparatus by means of ring with two pairs of pins located in mutually perpendicular planes of ring. Turn of nozzle in vertical and horizontal planes is effected by means of control crank whose sphere is received by hole of swivel nozzle control eye.
 Sports boat oar / 2261194
Proposed oar has handle with inner tube inserted in it. Pre-stressed tension spring mounted inside tubular handle and inner tube is secured respectively to bolt and pin. Tubular handle is provided with rollers embracing the inner tube in such way that it should not get in contact with tubular handle. End of each twin articulated oars is articulated with handle.
 Amphibian vessel / 2261820
Transversal links of propulsor tape are made in form of cylindrical members filled with elastic component and provided with external elastic envelope; they are secured on rigid beams which are interconnected by means of flexible segments and are filled with elastic material on side facing the hull. Distributing well of hydrostatic lubrication unit is provided with ball-type or roller-type valve.
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FIELD: transport. SUBSTANCE: invention relates to ship building, particularly, to propulsion/steering, rudder propeller and maneuvering propulsion devices with locking of extreme top position of the device. Hydraulic cylinder with mechanical lock of piston extreme positions comprises locking mechanism and blocks. Locking mechanism is arranged inside the piston. Several blocks fitted in piston act thereon at every position of said piston. EFFECT: possibility to take up higher axial loads. 1 dwg
The invention relates to the field of shipbuilding, machinery and concerns create propulsion and steering lifting, viitorului and thruster systems fit full (highest) position of the mechanism in its extreme position. At the time of writing applications known analogues. 1. The rotation mechanism with the console, EN 2000102679 A. 2. Propellers with detachable blades and dvoryanin lock braking, EN 94009316 A1. Also known is a similar type of mechanism described in the book "the Elements of the hydraulic drive", pp.182-183, ed. Abramov H. ed. Technique. 1969, containing cylinder cover piston rod, the piston and combined with it the ball locking mechanism. The disadvantages of this design include: - low bearing capacity mechanism (limit load), as the contact occurs at the contact points between the balls and the housing. The task, which is aimed at solving this invention is to increase the carrying capacity of the mechanism (the ability to keep a charge) in the extreme positions of the piston while maintaining the project properties. Technical results obtained when using this invention are: - simplification of existing structures; - improving the reliability of fixing of the piston in the extreme positions by increasing the bearing surface the displacement of the lock. To achieve the objectives in the proposed locking mechanism (see figure 1) applied several technical solutions: - two rows of crackers 7, each of which operates only on one position of the piston 8; - inside the piston has two piston 6 and two glasses 5; - in the piston 8 is made of four grooves (two on each side), which is for additional pressurization of the plunger at the time of closing of the lock; inside plungers installed spring 4, is constantly clamped crumbs to the inner cylinder body 1; - in the cover installed non-return valve 2, is designed to increase the bore, the discharge of working fluid from newportnews cavity. The fixation rod in the end position is as follows: when the supply pressure in podporchennuyu the cylinder chamber And the fluid acts on the plunger 6 and compresses the spring 4. Crackers 7 free piston 8 and he begins to move to its extreme position. When the crumbs of the second plunger approaches the recess, the spring is released (straightens up) and they separat cylinder in its extended position. In this position the rod 3 can absorb large axial (directed toward the axis of the cylinder) load, since the force transmitted to the body of the cylinder through the locked crackers with a large surface of contact. Cylinder with mechanical whom they lock in the extreme positions of the piston, includes a locking mechanism installed inside the piston, characterized in that, in order to achieve increased perceived axial load on each piston has its own number of crackers that are installed in the piston, and the contact occurs along a circular sector, which takes more effort.
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