6results about How to "Adjust resistance" patented technology

The application relates to the technical field of powder production and processing equipment, in particular to a flow guide device for airflow mill pulverization and a pulverizer adopting the flow guide device, wherein the flow guide device for airflow mill pulverization comprises a device body, a flow guide area, a collection area and a drainage area are formed in the device body, and the collection area and the drainage area are distributed around the flow guide area; when the device body is matched with a pulverization cavity and the pulverization cavity is in a working state, airflow sprayed from a nozzle flows to the lower part of the collision area after collision in the middle of a pulverization area and then flows into the flow guide area and the drainage area in sequence; the collection area collects coarse particles sinking downwards, the collection area is formed with an opening, coarse particles in the collection area can flow out through the opening, the flowed-out coarse particles can flow into the drainage area together with airflow and flow out of the drainage area; the flowing direction of airflow flowing out of the drainage area is towards the top of the pulverization cavity. The flow guide device for airflow mill pulverization can improve powder preparation efficiency and improve the vortex state at the bottom of the pulverization cavity.

This utility model relates to the field of rehabilitation equipment technology and discloses an adjustable knee joint rehabilitation trainer, including a base plate and a shell. A U-shaped frame is installed at the top of the base plate at the lower end of the shell. A transmission rod is rotatably connected through the U-shaped frame. A worm gear is fixedly connected to the middle of the transmission rod wall. A second foot pedal is installed at both ends of the transmission rod. An L-shaped rod is installed along the side wall of the U-shaped frame. A vertical rod is rotatably connected to one end of the L-shaped rod. A worm wheel that meshes with the worm gear is installed in the middle of the vertical rod wall. A lead screw is fixedly connected to the top of the vertical rod. A slider is threadedly connected to the lead screw wall. Several support rods are installed at the top of each slider. A semi-circular dome block is provided at the top of each support rod. A fixing rod is embedded through the L-shaped rod near the lead screw. This utility model realizes flexible adjustment of the knee joint rehabilitation training angle and can meet the training angle needs of different patients at different stages of rehabilitation.

The utility model provides a finger fine motion rehabilitation training device, which relates to the technical field of medical rehabilitation instruments and comprises a box body, a box cover is hinged to the side face of the box body, a buckle is fixedly installed on the side face of the box cover, a clamping ring is fixedly installed on the side face of the box body, and a bottom rod is fixedly installed in the box body. The adjusting head is rotated to drive the adjusting screw rod to rotate, and the connecting plate is in threaded connection with the adjusting screw rod, so that the connecting plate drives the moving block to slide along the bottom rod, the stretching degree of the tension spring is further adjusted, and the resistance during pressing training is adjusted; the individual requirements of patients in different rehabilitation stages for finger pressing strength are met, the pull rings and the holding rods are arranged, the patients can hold the holding rods with hands and hook the pull rings with fingers for stretching training, at the moment, the two sets of mounting sleeves, connecting rods and tension springs are matched, resistance is provided for stretching actions, and the stretching strength and flexibility of the fingers are exercised.

The utility model relates to a kind of postpartum pelvic floor muscle recovery training devices, it includes bed board, the vertical plate that can slide along the front and back direction of bed board and the clamping plate being arranged at the both sides of vertical plate, guiding limiting mechanism is arranged between slide and bed board, the front and back direction sliding of slide relative bed board can be made by the guiding limiting mechanism;Multiple upper end open grooves are vertically arranged in the inside of the both sides wall of vertical plate, adjusting block is clamped in the groove, spring is arranged on the adjusting block, adjusting bolt is screw-connected on the upper portion of the groove;Connecting rod is hinged between the adjusting block and clamping plate.The postpartum pelvic floor muscle recovery training device fixed position is adjustable, clamping plate spacing is small, and clamping force size is adjustable.

This utility model discloses a Tai Chi training and fitness device, including a base plate. A supporting threaded rod is fixed to the top edge of the base plate, and a fastening nut is installed on the supporting threaded rod. The supporting threaded rod fits against the inner wall of a stabilizing hole, which is located at one end of a horizontal plate. The other end of the horizontal plate is connected and fixed to the middle of the outer side of a mounting frame. A track window is provided through the side of the mounting frame, and a positioning bolt is installed through the track window. A positioning nut is installed at one end of the positioning bolt. A locking bolt is threaded onto the bottom of the support plate below the edge of the storage cylinder, and the end of the locking bolt connects to a locking hole located at the edge of the storage cylinder. This Tai Chi training and fitness device adopts a novel structural design, which not only allows for convenient adjustment of the working height to accommodate users of different body types, but also allows for convenient adjustment of the resistance level to accommodate users at different stages, greatly improving the overall applicability of the device.

The application discloses an aero-engine blade airfoil burr bridge optimization design method, comprising the following steps: setting an airfoil allowance on the basis of a blade airfoil design profile line, determining a front edge position, taking the front edge burr bridge as an example, determining point A as a front edge arc center point, auxiliary circle B and auxiliary circle C as inscribed circles of a blade basin and a blade back curve, the center point D of auxiliary circle D being on straight line AE, line segments E1E2 and D1D2 being perpendicular to straight line AE, straight line AE being a tangent line of an arc of the arc center point A and the center points of auxiliary circle B and auxiliary circle C, and the burr bridge being obtained by drawing arcs through points C1, D1, E1 and C2, D2 and E2 respectively, and the burr bridge height can be adjusted by adjusting the diameters of auxiliary circle D and auxiliary circle E, so that the burr resistance can be adjusted. The application can effectively reduce problems such as burr burst and airfoil crack in the production process, reduce labor intensity, and improve work efficiency.