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 relates to a construction method for enabling a cable to pass through a barrier. The construction method for enabling the cable to pass through the barrier sequentially includes following steps: firstly, confirming a pipe hole path so as to obtain the total length and the specification of a cable sleeve, prefabricating the cable sleeve by sections, threading a steel wire lead rope through the cable sleeve in advance, clearing the inner wall of the cable sleeve section by section, and performing anticorrosion and mouth repairing on the cable sleeve after a qualified pressure test on the cable sleeve is completed; then, performing a simulation experiment, obtaining a slide friction coefficient of the cable sleeve, figuring out the maximum slide traction resistance, judging whether the maximum slide traction resistance is larger than permissive pull force of the cable, and if yes, installing idler wheel hoops for a second experiment so as to obtain a rolling friction coefficient of the cable sleeve, figuring out the maximum rolling traction resistance during the cable passing process, and confirming specifications of traction facilities of a main steel wire rope and the like; finally, drilling pipe holes, enabling the cable to pass through the cable sleeve, using a winching to tow the cable, using an excavator to assist in cable feeding, feeding the cable in the cable sleeve for a section after installing each batch of the idler wheel hoops until the whole cable completely passes through the cable sleeve, and performing a performance test on the cable which passes through the cable sleeve after two end mouths of the cable sleeve are blocked. The construction method for enabling the cable to pass through the barrier can substantially reduce passing resistance of the cable, and is safe and reliable.

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 disc type tool magazine for a horizontal machining center. The disc type tool magazine comprises a disc arranged on a fixing support I, a rotation shaft is arranged at the center of the disc which rotates around the center of the disc through the rotation shaft, a plurality of tool clamps are installed at the edge of the disc, and axes of tool holding portions of the tool clamps are parallel to the surface of the disc. Tools are installed on the tool clamps through the tool holding portions, axes of the tools are parallel to the surface of the disc, and tool noses of the tools point to the circle center of the disc. The fixing support I is installed on one side of the horizontal machining center, and the axis of the disc is parallel to the X axis of the horizontal machining center. By means of the disc type tool magazine, the width of the tool magazine is not limited by the length of the tools and can be further compressed, the structure is simple and compact, and wide application is facilitated.

An elongating tool for PC2-6 diesel engine cylinder head studs comprises a tray, a plurality of hydraulic elongators, a distribution block and a lifting ring. A plurality of through holes are formed in the tray, a plurality of supporting legs in uniform arrangement are fixedly connected to the bottom of the tray, the hydraulic elongators are movably disposed in the through holes respectively, the distribution block is fixed at the center of the tray, a hydraulic oil inlet is formed in the top of the distribution block, a plurality of hydraulic oil outlets formed on the lateral side of the distribution block are connected with the hydraulic elongators respectively, and the lifting ring is fixedly connected with the tray through a plurality of slings. The elongating tool has the advantages of simple structure, small size, flexible combination, convenience in operation, high efficiency and practicality, and can be used for mounting and demounting of cylinder head nuts in the process that a diesel engine cylinder head is mounted or demounted.

The invention discloses a high-efficiency ore drawing process system for an ore draw shaft. The side surface of the draw shaft is communicated with a pedestrian / ventilating raise through check roadways; sealed doors are arranged in the check roadways; the draw shaft is communicated with the bottom of the pedestrian / ventilating raise through a transportation roadway; two stages of vibration feeding units are arranged at the bottom of the draw shaft; a first stage of vibration unit is composed of two parallel vibration plate bodies; a second stage of vibration unit is composed of two parallel vibrator feeders; a ventilating channel is arranged in a concrete frame below the first stage of vibration unit, and is connected with a connection roadway; and a crawling ladder is buried into the inner side wall of the ventilating channel. According to the high-efficiency ore drawing process system, the bonding effect of ore is removed through exciting force generated by the vibration units, automatic control of the vibration units on the bottom of the draw shaft is achieved, the high-efficiency ore drawing process system is low in construction cost and easy to construct or manually install, the ore drawing efficiency is improved, especially, the reliability and the high efficiency of the ore drawing process system for the strong-viscidity draw shaft are achieved, and the high-efficiency ore drawing process system has wide practicability.

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 discloses an automatic test equipment for a mobile mechanical arm to grab a detection mainboard, and the automatic test equipment comprises a test device body, a detection drawer is inserted in the middle of one side of the test device body, and a first positioning plate is fixedly arranged at one end of the middle of one side of the test device body. A second positioning plate is fixedly arranged at one end of the bottom of the detection drawer, a third positioning plate is fixedly arranged at the other end of the bottom of the detection drawer, and first sliding rods are fixedly arranged at the two ends of one side of the third positioning plate; the telescopic end of the first electric telescopic rod fixed to the middle of one side of the first fixing plate drives the second fixing plate to slide along the sliding groove in the middle of the top of the bottom plate, the pull rod fixedly arranged in the middle of the top of the second fixing plate pulls the positioning handle at the top end to move, and detection and installation of the mainboard are more convenient; the detection efficiency of the test equipment body is improved, and full-function automatic detection is achieved.

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.