10results about How to "Eliminate torque" patented technology

The invention discloses a supporting device and supporting combination equipment, and belongs to the technical field of petrochemical equipment, and the supporting device comprises a base component serving as an equipment connection foundation; the pre-embedded plate is used for being embedded in the ground of an equipment area; the sliding assembly is arranged between the pre-embedded plate and the foundation component, and the sliding assembly is connected with the foundation component or the pre-embedded plate; the limiting pieces are arranged on the periphery of the base component, and gaps are formed between the limiting pieces and the base component; the base component can slide relative to the embedded plate through the sliding assembly, and the multiple limiting pieces limit the periphery of the base component when the base component slides. The position of the equipment can be adjusted to a certain degree, additional force and torque are prevented from being generated between the equipment and a pipeline and between the equipment, the equipment is suitable for the condition of thermal expansion and cold contraction, and then the structural stability of the equipment is ensured.

This invention belongs to the field of motor technology and discloses a high-linearity finite-angle torque motor, comprising a cylindrical rotor and a cylindrical stator, with the rotor housed within the stator. The stator includes N coils and N constant magnetic circuit channels, where N is an even number of at least 2. The rotor's magnet portion has N polarities. The N coils of the stator are evenly arranged circumferentially on the inner side of the stator, with adjacent coils separated by constant magnetic circuit channels. The ends of all coil frames and the ends of the constant magnetic circuit channels together form the rotor's rotational track. Adjacent stator coils have opposite polarities after being energized, and adjacent rotor magnets also have opposite polarities. This invention employs a special stator lamination structure, theoretically eliminating stator cogging torque within the motor's operating angle range, thus improving the linearity of the motor's output torque. Compared to traditional slotted finite-angle torque motors, the output torque fluctuation is reduced by more than 70%.

This utility model discloses a rotary joint and a crane, relating to the field of hydraulic oil conveying technology. The rotary joint includes an oil delivery shaft, an oil supply sleeve, and an oil distribution sleeve. The oil delivery shaft has at least two independent oil delivery channels inside. The oil supply sleeve is rotatably fitted onto the first end of the oil delivery shaft and has oil supply channels corresponding to the corresponding oil delivery channels, which are connected to each other. The oil distribution sleeve is rotatably fitted onto the second end of the oil delivery shaft and has oil distribution channels corresponding to the corresponding oil delivery channels, which are connected to each other. The oil delivery shaft is used to convey hydraulic oil between the oil supply sleeve and the oil distribution sleeve. The pipe connected to the oil supply sleeve and the rotating mechanism connected to the oil distribution sleeve can both rotate coaxially relative to the oil delivery shaft, which can improve the problem in related technologies where the rotary joint is subjected to a counter-torque, causing fatigue stress in the connected fixed pipe, resulting in loosening or damage.

This utility model relates to a photomask clamp for microscopic inspection, belonging to the field of electronic device manufacturing and processing. It includes: a substrate with a placement groove at its center for accommodating the photomask; several clamping blocks slidably connected to the substrate surface, each clamping block being evenly distributed along the periphery of the placement groove and sliding radially along the groove; an adjustment mechanism including a rotating ring rotatably connected to the substrate and guide lugs evenly distributed on the rotating ring; the rotating ring rotating coaxially with the placement groove; the guide lugs corresponding in number to the clamping blocks, and each guide lug having a guide groove inclined outwards from the rotating ring; and each clamping block having a guide rod extending into and slidably connected to the guide groove; and a locking mechanism for locking or releasing the rotating ring and the substrate. This utility model ensures that the photomask is always clamped at the absolute center position of the placement groove, eliminating offset or twisting caused by asynchrony on both sides, and achieving high-precision automatic centering and clamping of the photomask.

The application provides a steel sheet pile cofferdam structure and belongs to the cofferdam building field.The steel sheet pile cofferdam structure comprises a plurality of steel sheet pile bodies which can be mutually inserted and assembled;the plurality of steel sheet pile bodies are driven into the deep bottom of a river channel by a pile driver, and two adjacent steel sheet pile bodies are mutually inserted;the plurality of steel sheet pile bodies cooperate with corner pieces to jointly form a rectangular cofferdam;the corner pieces are located at the four corner positions of the rectangular cofferdam;the inner wall of the rectangular cofferdam is provided with a plurality of surrounding purlin assemblies which are arranged from top to bottom and are rectangular;the surrounding purlin assemblies are uniformly provided with a plurality of support assemblies, and the support assemblies are in abutting cooperation with the inner wall of the rectangular cofferdam;the support assemblies in the surrounding purlin assemblies from top to bottom are jointly fixed and connected by bolt rods and nuts in one-to-one correspondence;the three-point support design, the adjustable assembly and the modular linkage structure are used to solve the problems of insufficient support strength, poor deformation adaptability and overall stability of the deep excavation cofferdam, and the construction safety and the structural reliability are significantly improved.

The utility model provides a cassava planter, include: main steel frame, walking wheel, cutter box, the both sides of main steel frame lower part are equipped with bearing seat respectively, is installed with first transmission shaft in bearing seat, walking wheel is connected with first transmission shaft one end, first transmission shaft other end is equipped with first sprocket, the cutter box has a plurality of, cutter box installs on the main steel frame respectively, be equipped with second transmission shaft on the cutter box, second transmission shaft penetrates cutter box, just second transmission shaft is connected with the gear inside cutter box, the second transmission shaft between cutter box is connected each other, be equipped with one -way sprocket on second transmission shaft, one -way sprocket is connected with first sprocket through first chain, the utility model discloses a one -way sprocket is set up on second transmission shaft, realizes the one -way transmission of power through one -way sprocket, can eliminate the torque that the speed difference of two walking wheels rotation speed is inconsistent causes second transmission shaft to improve the service life of second transmission shaft, improves the reliability of equipment.

The utility model discloses a kind of outer hexagonal flange wire lifting screws, it includes link rope, outer hexagonal head and the stud being connected with the outer hexagonal head, the outer hexagonal head is formed flange by increasing radially near the stud side, the stud is equipped with baffle near the outer hexagonal head one end, annular rope groove is formed between the baffle and the flange, one end of the link rope is connected on the annular rope groove, and the other end is equipped with lifting ring. The utility model is reasonable in structure design, when installing, just use spanner to tighten outer hexagonal head once, installation can be completed, overcome the defect of traditional need twice height operation, installation is completed in one step, greatly improve aerial work efficiency;Moreover, link rope can freely slide in rope groove and self-adapting load angle change eliminates torque, effectively avoid link rope distortion or cause stud loosening, ensure firm installation, use safely.

The utility model discloses a hinged shaft water passing pipeline switching device of a single cold cover plate for a pedestal pan, which is used for hinging a rear shell and a seat ring, and comprises a switching rotating piece, a bearing part fixed in a seat ring shaft hole, and a first pipe column and a second pipe column which are communicated with each other and are respectively arranged at two ends of the bearing part, the first pipe column is connected and installed to a water inlet adapter in the rear shell through the inner section of the main pipe shell, a plurality of avoiding notches are formed in the bearing part, and the avoiding notches are used for avoiding space and receding for a spray washing device arranged in the rear shell and a plurality of flexible rubber hoses of a control valve installation part arranged in the seat ring respectively; the adapting fixing piece comprises a socket barrel which is rotatably connected with the second pipe column and a third pipe column which is integrally formed and communicated with the socket barrel, and the third pipe column is connected with the control valve mounting part through the main pipe ring inner section. According to the closestool cover plate provided with the switching device, the torsion generated when the main water inlet pipe between the control valve mounting part on the seat ring and the spray gun assembly in the rear shell is twisted when the main water inlet pipe turns over along with the seat ring is eliminated through the structure.

The application discloses a high-strength steam turbine rotor blade and a processing method, and relates to the technical field of steam turbine rotor blades. The high-strength steam turbine rotor blade comprises a impeller, circular grooves are arranged on the two sides of the impeller, fixing structures are arranged on the two sides of the impeller, blades are arranged in the two circular grooves, the blades are provided in a plurality of groups, blade roots are welded on the sides of the blades, connecting portions are fixedly installed on the sides of the blade roots, limit grooves are arranged on the inner side walls of the circular grooves, and the limit grooves are provided in a plurality of groups. The connecting portions with special shapes and structures are arranged on the blade roots, so that the blade roots have better structural stability when being connected with the impeller or the rotating drum, the shape and the setting angle of the blades are changed, the blades are arranged in a circumferential direction, the axes of the blades and the rotor main shaft are perpendicular, the torque of the centrifugal force on the blades can be eliminated when the blades work, and the structural strength of the blades is improved.

The application discloses a product detection equipment, and particularly relates to the technical field of product detection, which comprises a detection rack, a workpiece and a suction device, the inside of the detection rack is sequentially provided with a work station clamping block, a multi-motion transfer frame and a positioning plate, the work station clamping block and the multi-motion transfer frame are used for stably placing the workpiece inside the positioning plate, the inside of the positioning plate is provided with a clamping assembly, and the clamping assembly is used for applying constant pressure to the workpiece inside the positioning plate and lifting the workpiece to observe the sample surface change during the detection process; after the positioning plate carries the workpiece and moves to a preset detection position, the clamping claw opens in an eight-shaped arc line movement along the bottom of the workpiece, the claw body retracts along an arc line track, still slides along the arc surface of the bottom of the workpiece in the initial stage of separation, gently weakens the lifting force, avoids instantaneous separation of the two, the top convex frame pushes the workpiece upward, the bottom of the workpiece is lifted away from the position of the claw tip, and the workpiece presents a low-obstruction suspended support state in the detection station.