8results about How to "Size adjustment" patented technology

This invention discloses a method for repairing hollow blades of aero-engines, comprising the following steps: determining the area on the hollow blade where the film cooling holes need to be restored; determining the processing parameters for the film cooling holes; setting the femtosecond laser processing parameters; mounting the hollow blade to be repaired onto a machine tool for positioning; processing the film cooling holes to be repaired using femtosecond laser processing technology; performing quality inspection on the repaired film cooling holes according to the process parameters of the film cooling holes; and testing the water flow rate of the repaired hollow blade. This invention utilizes the ultrashort pulse laser of femtosecond laser processing to irradiate the blocked film cooling holes on the hollow blade. The ultra-high energy density of the femtosecond laser ablates and vaporizes the non-conductive material blocked at the film cooling holes due to welding or additive repair, thereby achieving the effect of restoring or adjusting the size of the film cooling holes. The water flow rate is then tested to detect the aperture of the film cooling holes, ensuring that the water flow rate of the repaired hollow blade fully meets the technical standards.

The utility model relates to paperboard processing technical field discloses corrugated paperboard crease processing frock, including base one, the base one inside is provided with the discharge groove, the base one side wall is fixedly connected with base two, the base two between sliding connection has the slide, the slide lower surface fixedly connected with the guide post, the guide post side wall is equipped with the spring, the spring one end fixedly connected with the fixed column, the spring other end fixedly connects in the slide side wall, the guide post sliding connection is in the fixed column inside, the fixed column bottom fixed connection bottom plate, the bottom plate upper surface fixedly connected with hydraulic pressure rod, hydraulic pressure rod output fixedly connected with the link block. In the utility model, when intermittent conveying, paperboard is placed in the base one inside, and starts motor one and drives the link column rotation, so that the belt makes the push block move, and the paperboard is conveyed to the inside of base two, can realize automatic feeding, improve production efficiency, reduce production cost.

This utility model relates to a stator-rotor assembly and a powder-liquid mixing device. A stator-rotor assembly includes at least one stator and at least one rotor, the rotor rotating relative to the stator to shear the material flowing through the assembly. The structure of a single stator includes a first disc with several flow holes along the circumference on its end face for material flow. The structure of a single rotor includes a second disc with several notches along the circumference on its end face for material flow; each notch is hollowed out, thus forming independent blades between adjacent notches. By configuring the stator and rotor, the shearing consistency of the stator-rotor assembly on the material can be improved, thereby increasing the dispersion efficiency; simultaneously, the small overlap area between the stator and rotor reduces the heat generation of the stator-rotor assembly.

The utility model discloses a dust suction port, fallen leaf collecting device and sweeper truck relates to urban cleaning technical field, including shell and suction port flashboard, the interior of shell is provided with a dust suction channel, the dust suction channel vertically extends upwards from shell bottom, the bottom of dust suction channel is provided with bottom opening, the side face of dust suction channel close to bottom is provided with suction port, and the suction port flashboard is provided with the bottom opening. The bottom opening is connected and communicated with the suction port, a suction port insertion plate is arranged at the suction port, the suction port insertion plate can move towards the suction port to cover the suction port and move away from the suction port to expose the suction port, and the size of the suction port can be changed through the shape and the structure of the suction port to prevent blockage; the dust collection effect of the fallen leaf collecting device using the dust collection opening and the sweeping machine is greatly improved.

This utility model discloses a leaf collection vehicle, relating to the field of urban sanitation technology. The vehicle includes a vehicle body equipped with a negative pressure trash can, a leaf collection device, a leaf collection device fixing mechanism, and a sweeping device. The leaf collection device includes a suction port, which comprises a housing and a suction port insert. The housing has a suction channel extending vertically upwards from the bottom of the housing. The bottom of the suction channel has a bottom opening, and a suction port is located on the side of the suction channel near the bottom. The bottom opening connects to and is through the suction port. A suction port insert is located at the suction port, and the insert can move towards the suction port to cover it and move away from it to expose it. The suction port can change size using its shape and structure to prevent clogging. Using this leaf collection vehicle greatly improves the efficiency of sweeping up lightly littered objects such as leaves and branches.

The utility model relates to the technical field of electric actuators, in particular to a regulating valve electric actuator which comprises a manual hand wheel, an actuator shell and a regulating device, the actuator shell is fixedly installed on the lower surface of the manual hand wheel, and the lower surface of the actuator shell is fixedly connected with a driving shaft. An adjusting device is fixedly installed on the side, away from the actuator shell, of the driving shaft, connectors are fixedly connected to the side, away from the driving shaft, of the adjusting device, the inner walls of the connectors are chamfered, the multiple connectors are located at the axis of the driving shaft and arranged in a circumferential array mode, and the adjusting device is fixedly connected with the adjusting device. The lower surface of the actuator shell is fixedly connected with a connecting column, and the outbound surface of the connecting column is fixedly connected with a supporting frame. According to the utility model, through the arrangement of the adjusting assembly, the size of the joint can be effectively adjusted, so that the joint can adapt to adjusting valves of various specifications, the number of purchased actuators of different specifications is greatly reduced, and the purchasing cost is reduced.

The application provides a PPT playing control method, a handheld terminal, a playing terminal and a server, and comprises the following steps: the playing terminal displays a current playing page of a PPT and a comment of the current playing page; the playing terminal sends PPT information to the server; the server sends the PPT information to the handheld terminal; a user inputs display control information and PPT control information to the handheld terminal; the handheld terminal plays the PPT according to a corresponding display mode according to the display control information; the handheld terminal plays the PPT content, displays a page comment, adjusts a comment font and edits the comment according to the PPT control information; the handheld terminal sends PPT playing indication and PPT comment information to the server; the server sends the PPT playing indication and the PPT comment information to the playing terminal; and the playing terminal plays corresponding PPT content according to the PPT playing indication and edits the comment according to the PPT comment information. The handheld terminal can perform random page turning and animation playing on the PPT of the playing terminal, and has two comment modes, so that the comment can be saved for a short term or a long term according to requirements.