4results about How to "Avoid scratching" patented technology

The utility model relates to the technical field of mixing devices, in particular to a low-shear-force mixing device for transparent filling master batch production, which comprises a gold stirrer, a stirring rod is rotatably connected in the gold stirrer, a stirring head is fixedly connected to the lower end of the stirring rod, a scraping structure is arranged on the surface of the stirring rod, and a stirring head is fixedly connected to the stirring head. The cleaning and scraping structure comprises a limiting cylinder slidably connected to the surface of the stirring rod, an insertion plate is detachably mounted on the inner side of the limiting cylinder, a pulling plate is fixedly connected to the surface of the insertion plate, a limiting frame is slidably connected to the side wall of the pulling plate, a sliding plate is slidably connected to the interior of the limiting frame, and a mounting plate is fixedly connected to the other end of the sliding plate. According to the utility model, the scraping structure is arranged, so that materials adhered to the inner side of the stirring barrel can be conveniently and flexibly scraped, the phenomenon that a worker frequently scrapes the materials adhered to the inner wall of the stirring barrel is avoided, and the stirring efficiency of the materials on the inner side of the stirring barrel is improved to a certain extent.

The invention provides a retractor for thyroid surgery, and relates to the field of retractors, the retractor comprises a frame body, a support frame plate is arranged in the frame body, and a skin negative pressure translation mechanism and a retractor mechanism are arranged on the support frame plate; the skin negative-pressure translation mechanism comprises a negative-pressure cylinder and a piston plate, the negative-pressure cylinder is connected to the supporting frame plate, the piston plate is movably connected into the negative-pressure cylinder in a sealed mode, the lower end of the piston plate is connected with an ejector rod, the lower end of the ejector rod is connected with a sealing body, the lower end of the sealing body is provided with a spring, the upper end of the spring is connected with the sealing body, and the lower end of the spring is connected with the negative-pressure cylinder; the drag hook mechanism comprises a drag hook and a rotating rod body, the drag hook is slidably connected to the supporting frame plate, one end of the rotating rod body is elastically and movably connected with the supporting frame plate, a pressing mechanism is arranged on the frame body, the pressing mechanism is rotationally pressed and attached to the other end of the rotating rod body, and the pneumatic telescopic rod firstly drives the skin negative pressure translation mechanism to adsorb the skin and then translates to open an incision. The drag hook mechanism extends into the incision under the assistance of the pressing mechanism, the integrated process is achieved, and double drag hook is conducted on the incision.

The present application relates to mechanical assembly technical field, specifically, a kind of umbrella hoisting device and the hoisting method of gear hub type parts.The device includes: middle pole, multiple pin holes are provided on it along the axial direction;Ring is arranged on the top of middle pole;Movable hinge base is arranged on middle pole through sliding sleeve;Pin is arranged in sliding sleeve and cooperates with selected pin hole;Fixed hinge base is arranged on the bottom of middle pole;Multiple claw pole upper part is hinged with movable hinge base, and lower end is bent to form support claw;Multiple connecting rod two ends are respectively hinged with fixed hinge base and corresponding claw pole middle lower part;Pressing assembly is arranged on each claw pole and located above support claw.Movable hinge base moves relative to middle pole axial direction, and claw pole is driven to fold or unfold by connecting rod.The present application realizes axial two-way clamping to gear hub type parts annular boss by support claw and pressing assembly, avoids damaging internal tooth surface, has the advantages of compact structure, convenient operation, strong adaptability, hoisting stable and reliable.

The utility model provides an active clamping hoop which comprises an outer hoop assembly and an inner hoop assembly, and the inner hoop assembly is embedded in the outer hoop assembly. The outer hoop assembly is provided with adjustable devices used for adapting to the sizes of pier columns with different diameters in the transverse direction, the longitudinal direction and the oblique direction. The inner hoop assembly comprises an inner hoop steel belt, a flange connecting block and a locking device assembly, one end of the inner hoop steel belt is connected with the flange connecting block through a pin shaft to form a semi-ring hoop, the locking device assembly is arranged between the two semi-ring hoops in a penetrating mode, and the two semi-ring hoops are driven to achieve clamping and loosening of the inner hoop steel belt. According to the utility model, adaptive switching of bridge pier columns with different specifications can be realized, and the turnover utilization rate of equipment is greatly improved; and the clamping force can be accurately controlled, and damage to the surface of the bridge pier stud can be effectively avoided in the clamping process.