56results about How to "With rotational freedom" patented technology

The present invention discloses a two-dimensional rapid control reflector. The two-dimensional rapid control reflector comprises a lower housing, an upper housing and a base plate. A plurality of driver sets are uniformly arranged in the lower housing; each driver set comprises one displacement amplification mechanism and one piezoelectric ceramics driver arranged on each displacement amplification mechanism; one resistance strain gage is bonded at the outer surface of each piezoelectric ceramics driver; each displacement amplification mechanism is connected with one ball head in a fastening mode; each ball head is located at the upper surface of each piezoelectric ceramics driver; each displacement amplification mechanism is connected with one rocker panel through one flexible hinge; eachrocker panel is provided with one flexible support plate; the top ends of the rocker plates are fixed with a reflector through reflector bonding blocks; and the reflector is located above the flexible support plates. The piezoelectric ceramics drivers are employed to drive two-level lever-type displacement amplification mechanisms, the amplification multiple is large and can reach 6-10 times, thepiezoelectric ceramics drivers drive the driver sets, and therefore, the output is large, the response is fast, the resolution is high, and it is easy to improve the control bandwidth of a device.

The invention discloses a self-deformation available type combined ecological floating bed not hindering river flood discharge, which belongs to the field of water environment protection and is suitable for water quality purification and environmental protection of rivers with flood discharge functions. The self-deformation available type combined ecological floating bed is characterized in that the floating bed body is composed of a central floating bed block and an even number of flank floating bed blocks, the floating bed blocks form free hinge connection by lateral slide bars and sliding rings, and the floating bed blocks can be relatively moved and rotated. The combined floating bed is hooked on a front fixing frame and a rear fixing rod, the appearance of the combined floating bed is a rectangle under low water level conditions during drought period and normal water period, and is consistent with that of a common floating bed. When the water level is close to the warning water level of a river in wet season, the flank floating bed blocks are deviated from the front fixing frame, and the combined floating bed automatically unfolds to deform to a cone, so as to reduce the inhibition on the water flow. After the invention is implemented, the risk of the ecological floating bed hindering the river flood discharge can be effectively reduced, and the application range of the ecological floating bed in various rivers is expanded.

The invention provides a mold core for manufacturing a high-temperature alloy hollow blade. The mold core is placed in a wax injection mold to fabricate a wax pattern and the wax pattern covered with the mold core is used for fabricating a ceramic mold case; two positioning grooves are formed at the center positions of the front and rear two surfaces of the blade tip core head of the mold core; the positioning grooves are internally tapered grooves and the center lines of the positioning grooves are coincident with each other; and a pair of convex pins matched with the blade tip is arranged corresponding to the blade tip position of the wax injection mold. The mold core for manufacturing the high-temperature alloy hollow blade provided by the invention is characterized in that in mold core design, the shape of the core head part is simplified, and exposure of the blade root core head is eliminated so as to reduce involvement with the wax injection mold and the ceramic mold case, so that core making work becomes easy and the damage of the mold core is reduced. The mold core has certain degree of rotation freedom at the blade top core head in the directional solidification process of the high-temperature alloy hollow blade in the ceramic mold case, and the blade root core head is capable of completely and freely stretching in the vertical direction; therefore, the deformation and breakage of the mold core are greatly reduced, and the yield of the hollow blade is obviously improved.

The invention provides a self-resetting deformation compatibility floor slab joint structure. The self-resetting deformation compatibility floor slab joint structure comprises steel beams, steel columns, connecting units and self-resetting units; the steel beams are fixedly connected to the side parts of the steel columns through the connecting units at intervals and then form floor slab joints; and the two ends of the self-resetting units are correspondingly fastened between the steel beams and the steel columns, and axial recovery resistance to the floor slab joints is formed through the hysteresis characteristic of the self-resetting units. According to the self-resetting deformation compatibility floor slab joint structure, a shape memory alloy ring spring mechanism with the overload protection characteristic is utilized to provide self-resetting driving force and energy dissipation capability for the joints, and deformation compatibility between the joints and a structure system is further ensured through reasonable structural design.

The invention discloses a device for transferring a calcium hot metal ingot into a crucible. The device comprises a fixing base plate, a crucible rotating base supporting frame and a guide groove supporting seat are arranged inside the fixing base plate, a crucible rotating base is arranged at the upper end of the crucible rotating base supporting frame, a crucible is arranged at the front end ofthe crucible rotating base, a screw hole protective cover and a calcium hot metal ingot guide groove are arranged at the upper end of the guide groove supporting seat, the crucible rotating base is inbutt joint with a connecting port of the calcium hot metal ingot guide groove, an air pressure cylinder supporting seat is arranged at the upper end of the front side of the guide groove supporting seat, and an air pressure cylinder is arranged at the upper end of the air pressure cylinder supporting seat. According to the device for transferring the calcium hot metal ingot into the crucible, thecrucible rotating base has the rotating degree of freedom, so that the position placement flexibility of the crucible is realized, the butt joint speed is increased, the crucible and the crucible rotating base are in butt joint, and are in a consistent inclined angle, so that the metal ingot is prevented from being impacted and damaged, the integral butt joint is flexible, and the damage to the metal ingot is small.

The invention discloses a power operation and maintenance tool testing stand, which comprises an upper fixed frame, a lower fixed frame, fixed rods and lifting rods. The upper fixed frame and the lower fixed frame are horizontally arranged. The two ends of the upper fixed frame are connected with two lifting rods respectively. The two ends of the lower fixed frame are connected with two fixed rods respectively. The fixed rods are hollow. The lifting rods are inserted in the fixed rods. The side surfaces of the fixed rods are provided with locking bolts. The upper fixed frame and the lower fixed frame are respectively and correspondingly provided with a plurality of buckles. The buckles are made of elastic conductive materials. The buckles are annular and are provided with openings. The upper fixed frame is further provided with a voltage-resistant wire clamping bolt. The lower fixed frame is provided with a grounding wire clamping bolt. The testing stand saves the time for the test personnel to assemble and disassemble a voltage-resistant wire and a grounding wire in the prior art, so that the working efficiency is improved. The spacing between the upper fixed frame and the lower fixed frame can be adjusted, so that the testing stand can be applied to insulating tools diversified in type and length. Meanwhile, the test requirements of different voltage grades can be met.

A gap elimination device provided by the present invention is used to eliminate a gap between a brake shoe and a brake head at a brake beam fatigue test, and comprises a connecting block capable of connecting the brake shoe and the brake head. The top of the connecting block is a trapezoidal end matching a trapezoidal groove on the brake head, and opening grooves are arranged on the gradient surfaces at the two sides of the trapezoidal end. Adjusting blocks capable of moving in the opening grooves match in the opening grooves, and the positions of the adjusting blocks in the opening grooves are moved to eliminate a gap between the top side surface of the connecting block and the brake head. The gap elimination device is equipped with the connecting block and the adjusting blocks according to the shape of the gap between the brake shoe and the brake head, thereby not only being able to eliminate the gap, but also being able to realize the stepless adjustment.

The present invention discloses a two-dimensional rapid control reflector. The two-dimensional rapid control reflector comprises a lower housing, an upper housing and a base plate. A plurality of driver sets are uniformly arranged in the lower housing; each driver set comprises one displacement amplification mechanism and one piezoelectric ceramics driver arranged on each displacement amplification mechanism; one resistance strain gage is bonded at the outer surface of each piezoelectric ceramics driver; each displacement amplification mechanism is connected with one ball head in a fastening mode; each ball head is located at the upper surface of each piezoelectric ceramics driver; each displacement amplification mechanism is connected with one rocker panel through one flexible hinge; eachrocker panel is provided with one flexible support plate; the top ends of the rocker plates are fixed with a reflector through reflector bonding blocks; and the reflector is located above the flexible support plates. The piezoelectric ceramics drivers are employed to drive two-level lever-type displacement amplification mechanisms, the amplification multiple is large and can reach 6-10 times, thepiezoelectric ceramics drivers drive the driver sets, and therefore, the output is large, the response is fast, the resolution is high, and it is easy to improve the control bandwidth of a device.