51results about How to "Large lateral force" patented technology

The invention relates to a push-the-bit fully-rotary guiding tool. The push-the-bit fully-rotary guiding tool comprises a centralizer mechanism, a guiding actuating mechanism and a spline cardan shaft mechanism. The front end of the guiding actuating mechanism is connected with the spline cardan shaft mechanism; the rear end of the guiding actuating mechanism is connected with the centralizer mechanism; and when the rotary guiding tool conducts guiding drilling, a controlling system controls a down-hole motor to enable a specific hole in a big gear to communicate with drilling liquid channels in an upper main body and a lower main body of the guiding mechanism at a specific position so as to adjust an irrotational shell to the position where a needed guiding well deflection and a needed guiding direction are the same, then a drilling tool conducts drilling along the needed well deflection and the needed direction, and a well track is monitored by all while-drilling testing instruments at any time. The push-the-bit fully-rotary guiding tool has the characteristics that the build-up rate is high, application range is wide, and the obtained well track is high in quality.

The invention relates to a split type booster efficient rudder, which divides a rudder blade into an upper part and a lower part by taking the propeller axis as a boundary, wherein the two parts are independent from each other and are in steering control respectively; the shapes and the sizes of the upper rudder blade and the lower blade can be different; the cross sections of the upper rudder blade and the lower blade can be asymmetrical wing sections with cambers; the balance position (maintaining direct route of a ship at the moment of out of steering or being called as amidship) of the upper rudder blade and the lower rudder blade is arranged by deflecting a certain degree toward the rotation direction in a staggered manner to form an X-shaped structure in a horizontal plane according to the rotation direction of a propeller; the upper rudder blade and the lower rudder blade are respectively provided with an upper rudder blade tiller and a lower rudder blade tiller; and the upper rudder blade tiller of the upper rudder blade is a hollow shaft, the lower rudder blade tiller of the lower rudder blade is a solid shaft, and the upper rudder blade tiller is sheathed on the lower rudder blade tiller to form a coaxial mode. When at the balance position, the biggest fluid power can be obtained, and manipulation can be completed by breaking the balance of side force. The invention has the advantages of improving steerability by making full use of the wake flow characteristics of the propeller and having the capability of self boosting, thus being suitable for manipulation of various ships.

The invention relates to a vectored thrust ducted propeller. The vectored thrust ducted propeller comprises a screw propeller and a duct cylinder body, wherein the screw propeller can rotate to generate air currents and the duct cylinder body surrounds the screw propeller; a first rotating piece, a second rotating piece and a blocking piece which are arranged in an air current deflection mechanism are respectively and directly derived from a part of a duct body; a complete duct is jointly formed by the first rotating piece, the second rotating piece, the blocking piece and the duct cylinder body part. Under the driving of a speed reducing motor, a rotation driving shaft is rotated, so that the first rotating piece and the second rotating piece are driven to rotate to expected positions; the blocking piece moves forward and backward along a sliding groove formed in the duct cylinder body to prevent the air currents from flowing out of the right side of the duct, and the blocking piece is matched with the first rotating piece and the second rotating piece so that the air currents can flow out of the remained empty part formed after the first rotating piece is rotated; therefore, the whole system bears lateral force which is reversed to the air currents. According to the vectored thrust ducted propeller disclosed by the invention, the thrust direction of a ducted fan is substantially changed, large enough lateral force is provided for an aircraft to balance the reaction torque of a main rotor, so that the residual thrust in the axial direction of the aircraft is as small as possible, and more suitable for the aircraft of the type to ascend and descend perpendicularly and hang in the air.

In a crawler track comprising at least one guide wheel and caster wheels at a track carrier, at least one driving wheel for the track, and a guide wheel tensioning device including at least one tensioning member which acts on the guide wheel via a tensioning lever supported at the track carrier, the guide wheel is provided in a guide part which is exclusively linearly moveable and is laterally supported in the track carrier with a slide block arranged between the guide part and the tensioning lever, which slide block can slide crosswise and relatively to the linear direction of movement of the guide part while transmitting the tensioning force substantially parallel to the linear direction of movement of the guide part.

The invention discloses a superconducting electric electromagnetic hybrid maglev train, which comprises L-shaped suspension frames and an I-shaped ground rail, and is characterized in that the upper end of each suspension frame is connected with a train body through an air spring; the suspension frames are arranged on the two sides of the ground rail, and the suspension frames and the ground railare arranged at intervals. A plurality of superconducting magnets is arranged at the lower end of each suspension frame. An 8-shaped upper-layer suspension coil and an 8-shaped lower-layer suspensioncoil are arranged at the upper end and the lower end of the ground rail respectively, an upper-layer power generation coil and a lower-layer power generation coil are arranged at the lower end of thesuspension frame, and the upper-layer suspension coil is electrically connected with the lower-layer suspension coil; and a propelling coil is arranged above the upper-layer suspension coil. The invention has the advantages of large operation air gap, self-stabilization, good suspension guiding dynamic performance, better curve passing capacity, higher superconducting magnet magnetic field utilization rate and lower track construction cost.

Tyre (1) having a tread (2) comprising a central portion (L1) located across an equatorial plane (X-X), a first shoulder portion (L2) located towards an outer side of the tyre and a second shoulder portion (L3) located towards an inner side of the tyre, the central portion (L1) being separated from the first shoulder portion by two first circumferential grooves (3, 6), wherein - the said first shoulder portion (L2) and said second shoulder portion (L3) comprise a plurality of first transverse grooves (56, 66) having a first end located substantially at the respective edge of the tread (2), having a width greater than or equal to about 4 mm and an axial extension equal to at least 50% of the width of the shoulder portion in which they are located; - the number of said first transverse grooves (56, 66) of the first shoulder portion (L2) is lower than the number of said first transverse grooves of the second shoulder portion (L3); - the central portion (L1) comprises at least one circumferential rib (9, 10, 11), comprising a plurality of second transverse grooves (16, 17, 18); and - the second transverse grooves (16, 17, 18) have a maximum width smaller than or equal to about 3mm and define in said at least one circumferential rib (9, 10, 11) a void-to-rubber ratio smaller than or equal to about 0.06.

The invention relates to a fishing tackle, in particular to a vertical curved cutwater board, which comprises a baffle board, an upper scupper board, a lower scupper board, a connection board and a netting gear connection board. The cutwater board is characterized in that the baffle board is arc-shaped, the straight edge of the baffle board is connected with the connection board through a U-shaped connection piece and the arc edge of the baffle board is connected with the arc shaped upper and lower scupper boards. The surface area of the lower baffle board is larger than that of the upper baffle board. The included angle between the baffle board and the upper and the lower scupper boards is larger than 90 DEG. The cutwater board is designed from a viewpoint of hydrodynamics, which changes the surface structure and shape of the cutwater board, increases the water flow impulsive force of the cutwater board and fully achieves the horizontal expansion of the netting gear and the multi-layer fishing. The cutwater board has the advantages of high expansion capacity, great stability without tending to side turning, easy operation, long service life, good application effect and, etc.

The invention discloses a two-cylinder damper with a double-guide supporting device, which comprises an oil storage cylinder, a working cylinder and the double-guide supporting device. The working cylinder is arranged in the oil storage cylinder, a compression valve is arranged on the bottom surface of the working cylinder, a piston rod moving axially is arranged in the working cylinder, a piston valve is arranged on the piston rod, the working cylinder is divided into an upper cavity and a lower cavity by the piston valve, and a sealing device is arranged between the piston rod and the oil storage cylinder. The double-guide supporting device comprises an upper guider, a lower guider and a supporting sleeve ring. The two-cylinder damper has the advantages that since the two-cylinder damper is provided with the double-guide supporting device, bending resistance of the piston rod is improved, stability of vehicles during turning can be improved, the piston rod can bear larger yawing force transmitted to the damper during turning of the vehicles, and accordingly the service life of the damper is prolonged greatly and riding comfortability is improved.

Disclosed is a rotation guidance apparatus belonging to the technical field of oil drilling equipment. An end part of a lower connector (3) has a ball-socketed ball-joint rod (12), and a drill bit (1) is connected to the ball-socketed ball-joint rod (12); several circumferentially and evenly distributed piston holes are provided in a side wall of the lower connector (3), a piston matches each piston hole, and a piston rod (11) connected to the piston is movably connected to the ball-socketed ball-joint rod (12); and a eccentrically-placed valve core (17) is connected to a controller provided in an upper connector (4), a working face of the eccentrically-placed valve core (17) is opposite to the piston holes, and rotation of the eccentrically-placed valve core (17) makes the pistons in the piston holes move to control the rotation guidance of the ball-socketed ball-joint rod (12).

The invention belongs to the field of bridge erection, particularly relating to a small-curve bridge erecting machine for bridge erection for railways. The bridge erecting machine for bridge erection comprises a girder assembly, a cantilever beam arranged on the front end of the girder assembly and a lower guide beam assembly arranged on the lower part of the girder assembly, wherein an assistant trolley is arranged on the cantilever beam; the front end of the girder assembly is provided with a front landing leg assembly, an assistant landing leg is arranged between the girder assembly and the lower guide beam assembly, the rear part of the girder assembly is provided with a rear landing leg assembly, and the upper part of the girder assembly is provided with a hoisting trolley and a winch connected with the hoisting trolley. The invention has high bridge erection efficiency and high hole passing speed; low guide beam causes that the guide beam can bear bigger yawing force to ensure that the bridge erecting machine is safer to pass through the hole; large assistant crown block shift amount can erect the beam with smaller curvature radius; a rear landing leg running slide plate can reduce bridge erecting machine running resistance and prevent the running mechanism from being damaged.

A retaining device which can be fitted in a vehicle interior, in particular as part of a storage system. The retaining device contains at least one retaining strut with a length-adjustable rod structure and two plate-like supporting elements attached to the end sides thereof. The supporting elements can be fixed to the vehicle walls by a respective adhesive fastening device. This results in a secure support for the retaining struts without it being necessary to brace the retaining struts fixedly between the vehicle walls.

The invention discloses a band-type automatic net-changing device and a drip irrigation zone producing method using the band-type automatic net-changing device. The device comprises a net-changing plate and a fixed plate, wherein the net-changing plate and the fixed plate are connected in a movable mode, a sealing channel used for bands to pass is formed at the connecting position, a heating device and a cooling device are arranged on the net-changing plate and the fixed plate, a pressure sensor is arranged on the net-changing plate, a discharging channel is arranged on the fixed plate and is communicated with the sealing channel, a multi-hole plate is arranged at an outlet of the discharging channel, a die is connected with the fixed plate, a feeding channel is arranged on the net-changing plate, is communicated with the sealing channel and produces a lateral component force along the direction of the sealing channel, and the sealing channel is a wedge-shaped cavity along the central line of the feeding channel and becoming from shallow to deep outward. When melting materials enter the feeding channel of the net-changing plate through an extruding machine, a generation line of the side wall of the channel is vertical to a circular plane, and the side wall of the channel stops expansion of melting bodies and enables part of the melting materials to move fast along the expanding channel and enter the sealing channel. When impurities of the sealing channel are few and pressure of the melting bodies is small, the cooling device opens and lowers temperature of the front end of the melting materials to enable the front end of the melting materials to solidify, the melting materials enter the discharging channel through the bands and the multi-hole plate, the discharging channel and the die are communicated, and the materials are sent to the die to be shaped.

The invention discloses a split type buffering mechanism used for coupler buffers. The buffering mechanism includes a middle inner core and two buffering units symmetrically arranged along the inner core; the two buffering units are spliced on the two sides of the inner core by adopting a split type, and are not in contact with each other; the inner core is a circular ring structure, and the middle circular ring structure can be taken as an installation hole for connecting the buffering mechanism and a vehicle coupler; and the buffering units consist of multiple arc-shaped metal separating plate and multiple elastomers with arc-shaped structures through cross arrangement. The buffering mechanism is simple in structure, convenient in installation and maintenance and high in installation andmaintenance efficiency on the basis of guaranteeing a certain compression stroke, maximum acting force, buffering capacity and energy absorption rates, so that lightweight development of whole coupler buffers can be realized; and the buffering mechanism can effectively reduce wheelset transverse force, so that accidents of the derailment and rollover of trucks can be avoided, and therefore, highoperation safety can be achieved.