13results about How to "Reduce centrifugal force" patented technology

The application discloses a damping head and damping mechanism, and belongs to the technical field of damping devices such as vehicle-mounted shooting equipment. The damping head comprises a connecting piece, a movable piece, a supporting piece and a damping structure, the damping structure is movably connected with the connecting piece and the movable piece respectively, one end of the movable piece is movably connected with the connecting piece, the other end of the movable piece is movably connected with the supporting piece, and one end of the damping structure, which is away from the connecting piece, is movably connected with the supporting piece. The damping head of the damping mechanism can drive the supporting piece to swing forward and backward or left and right through the telescopic movement of the damping head when the supporting piece tends to swing, so that the centrifugal force of the camera swinging is buffered, the camera is prevented from falling off the damping arm, the camera is prevented from shaking, and the stability of a shooting picture is ensured.

The utility model relates to the technical field of scroll compressors, in particular to a scroll compression structure for a scroll compressor and the scroll compressor, the scroll compression structure for the scroll compressor comprises a movable scroll plate, the movable scroll plate is made of aluminum alloy, and the surface of the movable scroll plate is coated with a nano graphene coating; and the static scroll plate is meshed with the movable scroll plate. According to the scroll compression structure for the scroll compressor and the scroll compressor, the problem that an existing scroll compression structure for the scroll compressor is seriously abraded can be solved.

This invention belongs to the field of building material testing technology, specifically relating to a mechanical sensing-type asphalt admixture preparation shear strength testing device. It includes a fixed frame with a test chamber fixedly connected inside. A drive unit is fixedly connected to the upper end of the test chamber, providing driving force for the device. A mixing unit is fixedly connected to the middle of the drive unit, used for mixing asphalt and admixtures. A shearing unit is fixedly connected to the lower end of the drive unit, used for testing the shear strength of the mixture formed by the asphalt and admixtures. The shearing unit includes a mounting base, shear blades, a separating ring, and a layering block. The mounting base is fixedly connected to the drive unit, and multiple shear blades are provided, with each shear blade fixedly connected to the outer edge of the mounting base. This invention ensures stable high-speed operation through a three-blade symmetrical inclined design, integrating mixing and shearing functions, effectively improving the uniformity of material mixing and the accuracy and reliability of shear testing.

The utility model discloses a kind of low vibration bearing with optimized retainer structure belong to bearing technical field, including inner ring and outer ring, evenly be provided with rolling element between inner ring and outer ring, rolling element outside is provided with retainer, retainer includes first side plate and second side plate, there is array distribution in between first side plate and second side plate pocket, pocket and first side plate and second side plate between fixed connection, pocket and pocket between fixed connection there is pocket crossbeam.The utility model uses above-mentioned a kind of low vibration bearing with optimized retainer structure, reduce the collision of rolling element and retainer, inner ring and outer ring, enhance the overall rigidity of retainer, avoid rolling element position deviation, inhibit bearing vibration;Oil reservoir can store lubricating oil, reduce the friction and abrasion of rolling element and pocket, raceway, prolong the service life of bearing;Retainer uses aluminium alloy material, reduce centrifugal force when high speed operation, reduce the additional load to bearing overall, indirectly reduce vibration.

The application provides an optimization design method of an internal permanent magnet synchronous electric spindle for a high-precision numerical control machine tool, and aims at the problem that a conventional electric spindle structure cannot perform real-time adjustment on axial pre-load and radial external load, and performs optimization design on the electric spindle structure from three aspects of high-speed ceramic ball hybrid bearing material, axial pre-load real-time compensation and radial external load real-time compensation. The application can improve dynamic characteristics of a rotor system and can actively inhibit shafting vibration.

The utility model relates to a built-in type tilt U-shaped permanent magnet rotor of displacement, and relates to the motor technical field, and the rotor includes rotor core, be equipped with a plurality of permanent magnet unit on rotor core, permanent magnet unit includes first middle part horizontal magnetic steel group, middle part oblique magnetic steel group and two first side part magnetic steel, first middle part horizontal magnetic steel group and middle part oblique magnetic steel group all include at least two width different one -word type magnetic steel, and the one -word type magnetic steel of first middle part horizontal magnetic steel group is perpendicular to d axle, and the one -word type magnetic steel of middle part oblique magnetic steel group is inclined to set up relative to the one -word type magnetic steel of first middle part horizontal magnetic steel group, and first middle part horizontal magnetic steel group and two first side part magnetic steel form first U-shaped magnetic steel group, and middle part oblique magnetic steel group is arranged at the radial outer side of first middle part horizontal magnetic steel group, and the rotor of the utility model can reduce motor noise and torque fluctuation.

The application provides a multi-stage sludge screening device and a sewage treatment system. The device is used for screening sludge of a sewage treatment unit, and comprises a first number of first cyclones, a second number of second cyclones and a third number of third cyclones. The specification parameters of the first cyclones, the second cyclones and the third cyclones gradually decrease. The feed inlet of each first cyclone is used to receive sludge of the sewage treatment unit. The overflow outlets of the first cyclones are in communication with the feed inlets of the second cyclones. The underflow outlets of the first cyclones are in communication with a first pipeline. The other end of the first pipeline is in communication with a main pipeline. The overflow outlets of each second cyclone are in communication with the feed inlets of the third cyclones. The underflow outlets of each second cyclone are in communication with a second pipeline. The underflow outlets of each third cyclone are in communication with a third pipeline. The overflow outlets of each third cyclone are in communication with the main pipeline through a fourth pipeline. The multi-stage sludge screening device and the sewage treatment system can improve the performance of sludge and effectively improve the sewage treatment efficiency.

The utility model discloses a frameless motor testing tool, and particularly relates to the technical field of motor testing, which comprises a base, the top end of the base is fixedly connected with a support frame, the front side of the support frame is provided with a motor stator, the inner side of the motor stator is provided with a motor rotor, the front side of the support frame is provided with a limiting assembly, and an auxiliary mechanism is arranged above the base; the limiting assembly comprises a fixed column, a plurality of first guide grooves are formed in the fixed column, guide columns are slidably connected into the first guide grooves, one ends of the guide columns are fixedly connected with movable columns, and threaded rods are in threaded connection with the interiors of the movable columns. According to the utility model, by arranging the limiting assembly and the auxiliary mechanism, a rigid supporting structure can be formed on the inner side of the motor rotor, displacement caused by centrifugal force or torque fluctuation in the testing process is reduced, and the motor rotor can be kept stable in the testing process; and meanwhile, centrifugal force or vibration generated by uneven mass distribution of the motor stator during high-speed rotation can be reduced, so that the test precision is improved.

This utility model discloses an anti-cavitation device for a desulfurization pump. This utility model relates to the field of desulfurization pump technology. The anti-cavitation device includes: a pump body; an anti-cavitation component fixedly connected to the outer wall of the pump body; a motor fixedly connected to the outer wall of the pump body; the anti-cavitation component includes an impeller baffle; a first impeller is fixedly connected to one side of the outer wall of the impeller baffle; and a second impeller is fixedly connected to the other side of the outer wall of the impeller baffle. Holes are formed in the walls of both the first and second impellers, and the holes are arranged in ascending order of size along the outer wall of the first impeller. This anti-cavitation device, through the linearly distributed holes of varying sizes on the impellers, can change the flow field characteristics inside and around the impellers, suppress bubble generation, appropriately reduce the centrifugal force during impeller rotation, make the pressure distribution at the impeller inlet more uniform, and reduce the occurrence of cavitation.

The invention relates to the technical field of pedestal pans, and discloses a water-saving pedestal pan which comprises a flushing part, an accelerating part, a sewage discharging part and a sewage discharging pipe which are sequentially communicated, at least one flushing opening is formed in the rear portion of the flushing part, the width of a water sealing surface at the top of the sewage discharging part is gradually reduced from back to front, and / or at least one boss is arranged on the inner wall of the accelerating part. The slope portion of the boss can play a role in guiding water flow passing through the slope portion, force facing the pollution discharge portion is applied to the part of water flow, and part of water flow is directly guided to the pollution discharge portion, so that water flow rushing to the pollution discharge portion from top to bottom along the inner wall of the acceleration portion is formed under the interaction of the water flow and other water flow. And the part of water flow can generate direct larger impact force on the dirt floating on the water sealing surface and the dirt in the dirt discharge part, so that the dirt can be discharged more easily.

This invention provides a centrifuge testing device and method. The centrifuge testing device includes a rotating arm, a drive mechanism, a second cable adapter box, a fixed bracket, and a first cable adapter box. A test computer and a product power supply test box are mounted on the upper end of the fixed bracket. The product power supply test box has a communication connector and a power supply connector. A product communication cable is connected to the communication connector, and a product power supply cable is connected to the power supply connector. A current collector is located inside the fixed bracket. The first cable adapter box is electrically connected to the product power supply test box and the current collector ring via power supply cables. The current collector ring is connected to the second cable adapter box via an external cable. The second cable adapter box is connected to a power supply via a parallel power supply adapter cable. The test computer is electrically connected to the product power supply test box. This invention ensures normal data acquisition and effectively solves the problem of data frame loss by preventing communication interference from the current collector ring.

A cultivation rack for seedling cultivation belongs to the technical field of agriculture and aims to solve the problems that cultivation trays of an existing cultivation rack are generally static, seedlings close to a light source are sufficient in illumination when the cultivation trays are placed indoors, but seedlings far away from the light source are insufficient in lighting due to blocking of a cultivation rack body, so that the seedlings grow irregularly, and the cultivation cost is low. The device comprises a cultivation frame assembly, a plurality of cultivation disc assemblies are rotationally connected into the cultivation frame assembly, first synchronous wheels are fixedly connected to the cultivation disc assemblies, a clutch assembly is further connected to the cultivation frame assembly, a synchronous wheel system is driven by a driving assembly, and the synchronous wheels are driven by the driving assembly to drive the first synchronous wheels to rotate. The rotating shaft is driven by the synchronous belt, all the cultivation tray bodies rotate continuously, it is ensured that seedlings move to a daylighting point in turn, the rotating speed is low, centrifugal force is small, damage to the seedlings is avoided, daylighting of the seedlings is even, cultivation quality is improved, and growth difference is reduced.

This utility model discloses a backflow prevention safety protection device for oil production systems, relating to the technical field of oil production systems. It includes: an active component, a driven component, and a backflow prevention assembly. The active component has a cavity. The backflow prevention assembly is installed within the cavity. One end of the driven component is installed within the cavity. The backflow prevention assembly includes: two swing blocks, two springs, and two friction plates. The two swing blocks are rotatably connected to the active component. The two ends of the two springs are fixedly connected to the two swing blocks. The two friction plates are fixedly installed on the outer arc surfaces of the two swing blocks. Under the action of the backflow prevention assembly, when the motor drives the active component to rotate, the two swing blocks, under the action of centrifugal force, stretch the two springs, causing the friction plates to contact the friction rings. Under the action of friction, the driven component begins to rotate synchronously with the active component. When the motor stops, the oil pump cannot drive the motor to rotate, thus improving the safety and dexterity of the protection device.