52results about How to "Adjust the size arbitrarily" patented technology

The invention discloses a pre-stressed anchor rod for an underground engineering model test. The pre-stressed anchor rod comprises a rod body, trays, a spring and a nut, wherein the two trays and the nut are sleeved on the rod body in sequence; and the spring is also sleeved on the rod body and arranged between the two trays. The invention also discloses an operation method for the pre-stressed anchor rod for the underground engineering model test. The operation method comprises three steps including drilling, installing the anchor rod and applying pre-stress. By the pre-stressed anchor rod. the problem of simulation of the pre-stressed anchor rod in the model test is solved, and the pre-stressed anchor rod has the advantages that (1), the manufacturing is simple and the cost is low; (2), the dimension of the anchor rod and the pre-stress are adjustable, so as to satisfy various similarity ratio requirements of the model test; (3), and the pre-stressed anchor rod can be widely used for geomechnical model test research in such underground engineering fields as water conservancy, traffic, mine and the like.

The invention discloses a sliding skylight. The sliding skylight comprises a back beam, a sealing strip, a first guiding rail, a front beam, a second guiding rail and a glass plate; the left end of the back beam is connected with the tail end of the first guiding rail, the right end of the back beam is connected with the tail end of the second guiding rail, the front ends of the first guiding railand the second guiding rail are connected to the front beam, the sealing strip is mounted above the first guiding rail and the second guiding rail, and the inner side of the sealing strip is connected with the glass plate in a glued mode. Compared with the prior art, the sliding skylight has the advantages that skylight opening and closing are carried out through the sealing strip arranged abovethe guiding rails in a sliding mode, the size of the opened window can be adjusted at will, moreover, the line of sight cannot be blocked when the skylight is completely opened or closed, and better visual experience is brought to a user.

Provided is an electrical wire pipe threading and wire-leading apparatus. The apparatus comprises a rod member, a groove member, a rubber sheet, a T-shaped support, a tape wire, and a dust collector, one end of the groove member is open, the other end and side surfaces of the groove member are closed, the middle position of the closed end is provided with an open hole, one end of the rod member is welded at the side surface of the groove member, a vertical rod of the T-shaped support is sleeved by the tape wire, and a rope head of the tape wire penetrates through the open hole at the closed end of the groove member and an opening of the rubber sheet. A threading and wire-leading method of the electrical wire pipe threading and wire-leading apparatus includes: forming a closed space in an electrical wire pipe through the rubber sheet at an inlet end of the electrical wire pipe and an air suction hose at an outlet end; sucking the tape wire at the inlet end of the electrical wire pipe into the outlet end of the electrical wire pipe by employing the suction of the dust collector, wherein the air suction hose of the dust collector is arranged at the outlet end of the electrical wire pipe; and accomplishing the threading operation in the electrical wire pipe through pulling of the tape wire at the outlet end of the electrical wire pipe. According to the apparatus and the method, problems of long time consumption and low efficiency of the threading operation in concealed laying of the electrical wire pipe are solved, the construction cost is reduced, the work efficiency is improved, and the apparatus and the method are applicable to various construction environments.

The invention relates to a miniature pre-stress anchor cable used in a model experiment, which comprises an adjusting bolt and a steel stranded wire, wherein a nut of the adjusting bolt is fixed on the side wall of a cavity, the bolt is screwed into the nut to serve as an anchor cable head jointly, the steel stranded wire penetrates through the bolt, and is fixed on the bolt head through a slice, and the other end of the steel stranded wire is connected with a spring arranged in the inner anchor section in the model. The invention also discloses a burying and loading method for the miniature pre-stress anchor cable. The invention has the following advantages: firstly, through changing the lengths of the steel stranded wire and the spring, the size of the model pre-stress anchor cable can be adjusted at will so as to satisfy the model experiment similarity ratio requirements; secondly, through choosing the spring stiffness, the pre-stress scope of the model pre-stress anchor cable can be controlled so as to satisfy the model experiment requirements; thirdly, the pre-stress of the model anchor cable can be adjusted and controlled conveniently and accurately, and the miniature pre-stress anchor cable can be used under severer working conditions; and fourthly, the miniature pre-stress anchor cable can be applied in the rock geomechanics model test and research in the project fields of water conservancy, traffic, energy resources, mines, and the like.