57results about How to "Easy to install manually" patented technology

A printed circuit board fastening structure aims to fasten a printed circuit board which has a first bearing surface abutting and coupling on a casing and a second bearing surface. The first bearing surface is coupled with at least one support member. The support member has at least one leg connecting to the first bearing surface and an end portion formed with a fastening hole. The end portion is adjacent to the casing. A fastening element is provided to run through the casing from another side thereof to couple with the support member, thereby to fasten the printed circuit board to the casing.

The invention discloses a precise lifting mechanism for installation of a large valve. The precise lifting mechanism for installation of the large valve comprises a bottom frame. The left side and theright side of a top plate of the bottom frame are fixedly provided with vertical supporting plates. The inner side walls of the top ends of the two vertical supporting plates are fixedly provided with transverse plates. Two vertical threaded rods are located on the left side and the right side of the top plate of the bottom frame. The bottom ends of the vertical threaded rods are hinged to the top plate of the bottom frame. The top ends of the vertical threaded rods are hinged to the transverse plates. The vertical threaded rods are connected with lifting blocks in a screwed manner. The bottom face of a main bottom plate leans against the top faces of the two lifting blocks in a pressing manner. The left side and the right side of the main bottom plate are fixedly provided with vertical guide columns. According to the precise lifting mechanism for installation of the large valve, the valve can be put in a semi-circular groove, a transverse rotating main shaft is manually rotated, lifting of the lifting blocks is achieved, the height position adjustment of the valve can be achieved, it is guaranteed that the height position of the valve adapts to the installation height position, manual installing is facilitated, long-time manual lifting is not needed, and the manual labor amount is greatly reduced.

The invention discloses a combined type physical training apparatus for students' dormitories and mainly relates to the technical field of physical training apparatuses. The combined type physical training apparatus for students' dormitories comprises two upper support rod on the same horizontal plane, and each upper support rod comprises a first support pipe, a first adjusting screw, a first adjusting block, a first support arm and a first U-type rack; the bottom of the two support rods is provided with a lower support rod; each first support pipe is provided with a first pulley, the first pulley is provided with a first drawing rope, one end of the first drawing rope is provided with a chest expander downward handle, and the other end of the first drawing rope is provided with a balance weight box. The combined type physical training apparatus for students' dormitories has the advantages of being capable of being assembled and disassembled as will and being applicable to being firmly fixed between two double-decker beds to make full use of in-dormitory space, allowing physical training of crossover and downward chest expander training and helping students take exercise on legs, arms, back, chest and abdominal muscles to meet the demands of the students on physical training.

The invention relates to the technical field of learning tools, and especially relates to a backing board having a homework data storage function for students. Thus, the purpose of conveniently storing homework data can be realized. The backing board includes a backing board body; the top of the backing board body is movably connected to a connecting seat; the two sides on the top of the connecting seat are fixedly connected to thread bushings; the internals of the thread bushings are in threaded connection with threaded rods; and the bottom ends of the threaded rods pass through the bottom ofthe connecting seat and are in threaded connection with the top of the backing board body. Through limit devices at the internals of first placing grooves, clamping pieces can be fixed through connection boards connected to one ends of reset springs, and clamping can be performed on storage hard disks through the upper and lower clamping pieces at the internals of the first placing grooves, so that the positions of the storage hard disks can be limited; and data storage can be conveniently performed through data connectors on one ends of the storage hard disks, and the storage hard disks canbe conveniently and manually installed and dismounted through the elasticity of the reset springs, so that the purpose of convenient maintenance and replacing can be achieved.

The invention provides a method for installing the ceiling gusset, which is completed by the cooperation of the No. 1 frame, the No. 2 frame, the supporting frame and the buckle plate; There are several installation holes, and multiple bolts are needed to fix the keels. Using multiple bolts to fix is ​​not only time-consuming and laborious, but also drilling several bolt holes on the keel seriously affects the bearing capacity of the keel, and bolts are used to fix the keels. It seriously affects the construction efficiency of workers, and the current installation method between the keel and the wall often needs to be fixed with expansion bolts to ensure the stability of the installed skeleton, but it is not easy to disassemble later with expansion bolts; and it is easy to use for a long time after expansion bolts are fixed. Shaking occurs, affecting its installation and use effects and other problems.

The invention relates to a winding forming die for a cylinder and belongs to the technical field of mechanical forming. The winding forming die is composed of a shell, a mandrel, supporting mechanisms and an end socket positioning device. The multiple supporting mechanisms are parallel, are of the same structure and comprise inner rings, outer rings and supporting rods. The inner rings penetrate in the mandrel and are fixed through dowels. The supporting rods are distributed between the inner rings and the outer rings in a radial manner, and the outer rings are fixed to the shell. The shell is fixed through the end socket positioning device. The winding forming die is applied to machine forming and has the beneficial effects of being convenient to mount and demount, reliable in connection, high in rigidity, small in deformation, low in weight and cost and the like.