5results about How to "Fixed length" patented technology

The utility model provides a kind of high-speed tunnel mouth soft blocking security control device, including inflatable security control device, audible alarm, tunnel smooth security code and variable information board, inflatable security control device is several and is set towards the direction of tunnel mouth outside tunnel, inflatable security control device includes air blower and security control bag, air blower is connected with the guardrail vertical rod of tunnel by bearing plate, security control bag is connected with the output end of air blower, audible alarm is interval set on the inner wall of left and right sides of tunnel along tunnel direction of travel, variable information board is set at tunnel entrance, tunnel smooth security code is interval pasted on the inner wall of left and right sides of tunnel along tunnel direction of travel, the utility model realizes tunnel security control by the combination of air blower and security control bag, can be blown full and security control to predetermined position in short time, avoid causing vehicle secondary accident, and introduce tunnel smooth security code, and it is pasted on tunnel wall, passive positioning can be replaced for active alarm by tunnel smooth security code, greatly improve security control efficiency, effectively avoid secondary accident caused by other vehicles entering.

The utility model provides a special-shaped ceiling hoisting assembly, which relates to the technical field of ceiling hoisting and comprises a hoisting piece body. The hoisting piece body is provided with a fixed bearing cylinder in the vertical direction, threads are formed in the outer circumference of the bottom of the fixed bearing cylinder, two nuts are installed on the outer circumference of the bottom of the fixed bearing cylinder through the threads, and threads are formed in the inner circumference of the lower portion of the fixed bearing cylinder. Three strip-shaped holes in the vertical direction are formed in the upper wall of the fixed bearing cylinder in an annular array mode, through fixing holes are formed in the middles of the strip-shaped holes of the fixed bearing cylinder, the fixed bearing cylinder can be conveniently inserted into a wall body hole, an opening moving block is tightly supported in the wall body hole through an opening rotating column, and therefore fixing and dismounting of the fixed bearing cylinder are achieved; the problems that due to the fact that a hoisting assembly is fixed to the wall through bolts, mounting holes in the wall cannot be reused, and fixing measures are inconvenient to add on the hoisting assembly to achieve reuse of the mounting holes in the wall are solved.

The utility model relates to the field of PPR pipe, concretely to a PPR pipe structure of end integrated internal and external thread, including connecting pipe, and the side wall of connecting pipe is opened and passed through and has pipeline b, and the middle part fixed mounting of pipeline b has the baffle, and the side wall of baffle middle part is opened and passed through and has the rotation groove, and the inner rotation groove is installed with the mounting plate, and the arc wall of pipeline b is opened and has a plurality of sliding slots, still include: install the pipe, and the side wall of install the pipe one side is opened and has the installation slot, and the one end of connecting pipe is inserted and is installed in the installation slot. The PPR pipe structure of end integrated internal and external thread, is provided with connecting pipe, and the arc wall fixed mounting of installation slot has a plurality of limit stop, and the limit stop sliding installation is in the sliding slot, and through the both ends of connecting pipe along the installation slot sliding, the limit stop along the sliding slot sliding, to adjust the length of overall pipeline, to be suitable for different installation positions, adjust overall pipeline to the specified position, make the limit stop rotate to the limit slot in the rotation connecting pipe, and the check block is positioned to the limit stop, to fix the length of overall pipeline.

The invention relates to the technical field of conductors, and discloses a cylindrical battery based on conductive pole optimization, the cylindrical battery comprises an aluminum shell, the outer surface of the aluminum shell is detachably connected with a protection assembly for buffering external collision; the first conductive pole is arranged on the lower surface of the aluminum shell; the conductive component is arranged on the aluminum shell; wherein the conductive assembly comprises a base, a second conductive pole and an elastic structure, the base is riveted on the aluminum shell, and the inner side of the base is electrically connected with the second conductive pole through the elastic structure; through the arrangement of the base, the second conductive pole and the elastic structure, when the device is not used, the length of the battery can be adjusted, so that the conductive component is not in contact with the pole piece in the battery jar, a circuit is cut off, the inconvenience that the battery needs to be taken out of the battery jar for additional placement is reduced, the operation is simple and convenient, and the battery can be well fixed through the elastic extension of the conductive component. Therefore, the stable effect of the circuit is guaranteed.