8results about How to "Avoid vibration phenomenon" patented technology

The invention relates to the technical field of magnetic particle imaging, in particular to a non-magnetic field line three-dimensional magnetic particle imaging method and system based on weak gradient coding, and the method comprises the steps: driving a zero magnetic field line to carry out the spiral scanning of an imaging object; exciting a nonlinear response signal generated by magnetic particles of the imaging object; obtaining a two-dimensional image of magnetic particle concentration distribution in the imaging object; performing spatial position coding on the zero magnetic field line; obtaining target magnetic particle concentration distribution on the zero magnetic field line; and obtaining a three-dimensional image of the magnetic particle concentration distribution in the imaging object. According to the invention, the zero magnetic field line along the axial direction is constructed, and the Halbach permanent magnet array is driven to carry out visual field scanning of two-dimensional imaging. Two-dimensional imaging is carried out by adopting axial projection, then three-dimensional reconstruction is carried out under the guidance of the two-dimensional reconstruction image, and the three-dimensional reconstruction image is reconstructed by encoding the zero magnetic field line, that is, the three-dimensional image reconstruction can be completed only by scanning twice, and the imaging speed is higher compared with the traditional three-dimensional tomography.

The utility model provides a microbend Coriolis mass flow meter, which relates to the technical field of flow meters and comprises a first shell, a second shell is mounted on one side of the first shell, connecting pipes are fixed at two ends of the first shell and two ends of the second shell respectively, circulating pipes are arranged in the first shell and the second shell, and the first shell and the second shell are communicated with the first shell and the second shell. The two ends of the circulation pipe are arranged in the two connecting pipes and fixed to the two connecting pipes, an exciter is installed on the inner wall of the second shell, and sensors are installed at the positions, located on the two sides of the exciter, in the second shell. Through the arrangement of a first mounting plate and a second mounting plate, the first shell and the second shell can be integrally disassembled, an exciter and a sensor can be conveniently assembled and disassembled, the practicability is higher, through the arrangement of a stabilizing plate and a mounting hole, the pillow of the device can be in butt joint with the outside, the device is fixed to the outside wall and other places, and the practicability is higher. Therefore, the first shell and the second shell of the device are prevented from vibrating, and the practicability is higher.

The present invention relates to the technical field of cement mixing pile machines, and specifically to a limited-position cement mixing pile machine for preventing rotation and deflection and a method for preventing rotation and deflection, comprising: a driving member, which is arranged on the lifting platform, and the driving member is provided with a positioning ring capable of inserting the end of a drill rod; a clamping assembly, which connects the lifting platform and the driving member, and the clamping assembly comprises a driving structure and a retracting structure, and the retracting structure is provided with a plurality of groups of arc-shaped members equidistantly arranged on the circumference, and the driving structure cooperates with the retracting structure to drive the plurality of groups of arc-shaped members to move toward the drill rod; a sleeve structure, which is connected to one end of the drill rod away from the arc-shaped member, and the sleeve structure can suppress the vibration generated by the end of the drill rod away from the arc-shaped member, prevent the screw thread of the threaded connection from being damaged, and improve the portability of the installation and disassembly of the drill rod.

The invention relates to the technical field of perpendicularity detection, and discloses a constructional engineering perpendicularity detection device which comprises a device base, limiting baffles are symmetrically and fixedly arranged on the upper end face of the device base, a rotating groove is formed between the two sets of limiting baffles, and an overturning seat is movably arranged in the rotating groove. A spline groove is formed in the middle of the overturning base in a penetrating mode and matched with the positioning shaft. According to the constructional engineering perpendicularity detection device, the servo motor is started to cause the two groups of rotary motion wheels to do circular motion, four groups of cam surfaces on the rotary motion wheels generate relative acting force with arc heads on the positioning columns in the motion process, the positioning columns are caused to do linear outward motion, and the verticality of the constructional engineering is detected. The positioning columns partially stretch out of the column holes to act on the inner wall of the limiting sleeve, the four sets of positioning columns make contact with the inner walls of the four faces of the limiting sleeve at the same time, the telescopic support is locked at the temporary position in the limiting sleeve, the positioning effect is achieved, and the phenomenon that the telescopic support and the detector vibrate during follow-up movement is avoided.

This utility model relates to a device for separating residual zinc liquid from zinc dross, belonging to the field of zinc dross separation technology. The device includes a separation component, a drive component fixedly installed on the top of the outer side of the separation component, and four support rods installed on the bottom of the outer side of the separation component. A buffer component is installed at the bottom of the four support rods to cooperate with them. Through the structural design of the separation component and the drive component, this utility model can achieve centrifugal rotation separation of the zinc dross. During centrifugation, the zinc dross is heated by a heating wire, facilitating the melting of the solidified zinc liquid remaining on the outside of the dross into a liquid state, making it easier for operators to collect and separate later. Simultaneously, the design of the sleeve and mixing rod allows for mixing of the zinc dross, improving the uniformity of heating in the later stages and ensuring the efficiency and quality of zinc dross separation.

The utility model provides a push button water suspension mechanism and a water outlet device, and relates to the technical field of sanitary products, the push button water suspension mechanism comprises a water inlet pipe and a sliding pipe sleeved on the outer side of the water inlet pipe, the water inlet pipe is provided with a water inlet, a water outlet, a water inlet channel, a water outlet channel and a water passing hole, the water inlet channel is communicated with the water inlet, and the water outlet channel is communicated with the water outlet. The water outlet channel is communicated with the water outlet; the sliding pipe is provided with a water sealing part and a water passing cavity, and the push button is driven in an operable mode to drive the sliding pipe to move between a first position and a second position in the axial direction of the water inlet pipe, so that the water inlet and the water outlet are separated through the water sealing part or communicated through the water passing cavity; and when the water inlet is separated from the water outlet, water flow enters the water outlet channel only from the water passing hole so as to realize a water pause function. Therefore, the problems that an existing water suspension mechanism is complex in structure, multiple in parts and large in occupied space are solved.

The utility model relates to the technical field of motor end covers, in particular to a vibration reduction end cover of a motor, which comprises a motor shell, a motor rotor is arranged on the surface of the motor shell, an end cover body is fixedly mounted on the surface of the motor shell, and a fixing seat is fixedly connected onto the surface of the motor shell. A movable plate is rotationally connected to the surface of the fixed seat, a limiting plate is fixedly connected to the surface of the movable plate, and a fixed plate is fixedly connected to the surface of the end cover body. The movable plate is rotated on the fixed seat, so that the limiting plate is clamped and connected to the clamping groove of the fixed plate, and then the first bolt penetrates through the circular hole of the fixed plate, so that the first bolt is in threaded connection to the threaded groove of the limiting plate; the movable plate and the limiting plate limit the position of the end cover body on the motor shell through the fixed plate, so that the phenomenon that the end cover body vibrates on the motor shell is avoided, and noise is avoided.

The invention relates to the technical field of linear transmission, in particular to a floating type high-load linear transmission module which comprises a base plate, a transmission roller shaft, a lifting transmission assembly, a lateral fine adjustment assembly and a roller shaft connecting assembly. A through groove is formed in the base plate, one end of the transmission roller shaft penetrates through the through groove and is connected with the roller shaft connecting assembly, the lifting transmission assembly comprises a lifting driving device, a linkage device, a lifting moving device, a lifting supporting device and a lifting locking device, and the lifting driving device is in driving connection with the linkage device. The number of the lifting moving devices is two, the two lifting moving devices are arranged on the two sides of the through groove correspondingly, and the driving ends of the two lifting moving devices are both connected with the linkage device. The device is specially used for adjusting and driving the heavy-duty roller shaft and is suitable for heavy-duty roller equipment.