4results about How to "Troubleshoot broken tech issues" patented technology

The utility model discloses a chip mounter convenient for fixing a circuit board, which relates to the technical field of chip mounters and comprises a first box body, a second box body fixed at the top of the first box body, a bottom plate fixed at the bottom in the second box body, a fixing assembly arranged on the bottom plate, and a chip mounting assembly arranged at the top in the second box body. A circuit board is placed in the fixing assembly, the circuit board is clamped and fixed through the two pressing blocks by loosening a pull rod under the action force of the telescopic spring through cooperation of the fixing block, the telescopic spring and the pressing blocks, the circuit board cannot be damaged due to too large pressure when the circuit board is clamped and fixed through cooperation of a rubber pad and a groove, a transmission motor is started, and the circuit board is prevented from being damaged. And the output end of the transmission motor drives the limiting block and the device below the limiting block to move along the direction of the screw rod, so that the chip mounting device can move horizontally, and the technical problem that the circuit board deviates or shakes during fixed chip mounting is solved.

This application discloses an air conditioner, belonging to the technical field of electrical equipment. The air conditioner includes: a housing, a fan assembly, a drive assembly, and a support member. The housing has a receiving cavity and an air outlet communicating with the receiving cavity. The fan assembly includes a volute assembly and a fan wheel disposed within the volute assembly. The drive assembly includes a driver, a motor base, and a motor cover, all disposed within the receiving cavity. The driver is drive-driven to the fan wheel, and the motor base and motor cover are detachably connected. The support member is disposed within the receiving cavity and supports the driver. After the motor cover is removed, the support member provides temporary support for the drive member, minimizing the risk of the drive member detaching from the motor base, thus reducing the possibility of damage to the drive member and minimizing the risk of the drive member falling and causing deformation of the base plate.

This invention provides a fixing device for a receiver tube panel and a tower-type solar thermal power plant. The fixing device for the receiver tube panel includes: a connecting frame; at least one connecting component for connecting all the receiver tubes to the connecting frame; a support frame disposed on the connecting frame, the support frame having at least one fixing hole and at least one thermal expansion compensation hole; the thermal expansion compensation hole is used for at least a portion of the tube panel connecting component assembly to pass through and flexibly connect with the receiver tubes through the tube panel connecting component assembly, and the fixing hole is used for at least a portion of the tube panel connecting component assembly to pass through and rigidly connect with the receiver tubes through the tube panel connecting component assembly; wherein, after being heated, the support frame can have thermal expansion displacement relative to the tube panel connecting component assembly along a first direction and / or along a second direction through the thermal expansion compensation hole. The technical solution of this invention solves the problem in the prior art where thermal expansion of the support structure on the back of the receiver tube panel causes irreversible bending deformation of the tube edge tubes.

This utility model discloses a negative pressure prevention device for loading and unloading operations, relating to the field of sulfuric acid pipeline transportation. It includes a pressure-reducing pipe and a first pipeline. A pressure-reducing box is installed at the top of the pressure-reducing pipe, and a connecting box is connected to the top of the pressure-reducing box. A vent pipe is fixed to the end of the connecting box, and a connecting pipe is connected to one side of the pressure-reducing box. A rim is provided on the outer wall of the seal. When the electric valve is closed, the negative pressure inside the first pipeline attracts the seal, causing it to wrap around the top of the pressure-reducing pipe. The negative pressure also draws the rim on the seal inward, creating a gap between the seal and the pressure-reducing box. External gas enters the pressure-reducing box through the vent pipe and flows into the first pipeline through the connecting pipe, thereby filling the negative pressure area inside the first pipeline near the connecting pipe end, reducing the negative pressure and thus protecting the electric valve.