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681results about How to "Reduce looseness" patented technology

Method for mounting large-sized rolling mills

The invention relates to an installation of metallurgy industry rolling mills, pinch pass mill, burnishing machines and the like large-scale mechanical equipment, especially to an installation method of a large-scale rolling mill, which is characterized in that the installation of a large-scale rolling mill is realized by the process steps of base preparation, rolling mills bearing plate installation, rolling mills motherboard transverse alignment, sling preparation, memorial archway transverse alignment, memorial archway check-up, roll-changer installation and rolling mill accessory installation. The invention satisfies all requirement of different construction sites, effectively resolves hanging difficult problem, saves work efficiency about 6-7 times, ensures installation quality, uses hydraulic bolt stretchers to avoid bolt up force moment from macrolesion bolt, and adopts small fastening force moment to allow rolling mills subbase to become flexible. Work difference bands are used to control the roll changing transmission device central line and the rolling mill central line to ensure installation quality. According to combination of calculation and on-site practicality, the invention not only can be used for rolling mills installation, but also can spread in mechanical equipment installation with common advising signification.
Owner:ANGANG CONSTR CONSORTIUM

Method for solving disengagement and water seepage of internal arch of tunnel

The invention relates to a method for overcoming tunnel defects, in particular to a method for solving disengagement and water seepage of an internal arch of a tunnel. The method includes the steps that a detection radar is utilized for detecting the disengagement position and the position of a water seepage channel in a damaged tunnel, a grouting hole is obtained by drilling a hole in the surface of a lining of the disengagement position, a grouting pipe is installed in the grouting hole and extends into the disengagement position, a first grouting hole of which the diameter is greater than that of an outlet of the water seepage channel is obtained by drilling a hole in the outlet of the water seepage channel, and a first grouting pipe is arranged in the first grouting hole in a sealed and matched mode; grout is injected into the grouting hole and the first grouting hole, the grout filling situation inside the disengagement position and the water seepage channel is detected in real time through the detection radar, and grouting is stopped when the disengagement position and the water seepage channel are filled with the grout; after the grout is solidified and reaches the final strength, multiple longitudinal slots and multiple transverse slots which extend from the outline to the periphery are formed in the surface of the lining; all the slots are filled with grout, the grout is solidified; the disengagement position and the adjacent portions surrounding the disengagement position are fixed and strengthened, and water accumulated in the water seepage channel is drained.
Owner:JIANGSU DINGTAI ENG MATERIAL

Sight and sound barrier

In one embodiment, the sight and sound barriers of this invention have a flexible sheet of lightweight, resilient foam as a core. This core is covered by a fabric or other suitable covering to further enhance the acoustic properties and to make the walls attractive. In this embodiment the core of polyethylene, polystyrene, urethane, or a mosaic thereof, for example, is made flexible with alternating wall and hinge portions. In an alternate preferred embodiment, the barriers or panels are formed with mitered grooves to allow the panel to be bent into larger degree corners, such as 90 degrees in one direction or 180 degrees in the opposite direction. Preferably the grooves have a depth extending substantially through the thickness of the core. In one embodiment, the covering material on one side of the panel is laid into the groove so that the covering material of a wall portion approaches, or preferably touches, the covering material on the opposite side. In an optional feature, grooves can be placed on alternating sides of the panel or barrier. In an optional feature, groove inserts may be sized and shaped to be placed in the grooves. The groove inserts may include a face which is flush with, recessed or protrudes from the adjacent wall portions. The groove inserts and mitered grooves may use various connectors such as Velcro® hook and loop fasteners or magnets.
Owner:CHILDRENS FACTORY LLC

Power control cabinet achieving safe power supply

The invention discloses a power control cabinet achieving safe power supply. The power control cabinet comprises a cabinet body which is internally provided with a containing cavity and a drawer part arranged inside the containing cavity, the left end face of the drawer part is provided with an insertion and connection rod and a power supply connection hole formed in the lower portion of the insertion and connection rod, a through hole is formed in the portion, opposite to the insertion and connecting rod, inside the cabinet body, a first transmission cavity is formed in the portion, below the through hole, inside the cabinet body, a second transmission cavity is formed in the portion, at the left side of the through hole and the first transmission cavity, inside the cabinet body, the second transmission cavity is internally provided with a transmission sliding block, a first spring is arranged on the top of the transmission sliding block, an inclined sliding groove is formed in the right end face of the transmission sliding block, a first rack is arranged on the portion, below the inclined sliding groove, of the transmission sliding block, the first transmission cavity is internally provided with an external gear plate which is connected with the first rack in a meshed mode, a guide sliding rod is arranged on the upper portion of the external gear plate, a sliding block is arranged on the guide sliding rod, and a power supply insertion and connection rod is connected to the bottom of the sliding block. By means of the power control cabinet achieving safe power supply, the safety of maintenance is improved.
Owner:广州迅速光电科技有限公司

Short connecting device

The invention discloses a short connecting device which comprises a fixing body, inserting connection rods, expansion rods, a sliding semicircular sleeve, a breakover bar and a rotary knob. Holes are formed in the outer surfaces of the inserting connection rods, the expansion rods are arranged in the holes, and protrusion parts are arranged on the expansion rods. The expansion rods are arranged in the inserting connection rods in a sliding mode, the top ends of the inserting connection rods are fixed in the fixing body, and the sliding semicircular sleeve is in sliding contact with the outer surfaces of the inserting connection rods. A rotating shaft is fixed in the fixing body, and the rotating shaft is placed above the inserting connection rods. The middle portion of a pressing bar is fixed on the rotating shaft, and the two ends of the pressing bar are in contact with the top end of the sliding semicircular sleeve and the top ends of the expansion rods respectively. The number of the inserting connection rods is two. A connecting shaft is vertically arranged in the fixing body, and the connecting shaft is placed between the two inserting connection rods. The middle portion of the breakover bar is connected with the connecting shaft, and the rotary knob is arranged on the top of the fixing body and is connected with the connecting shaft. The inserting connection rods are further provided with connecting grooves and arc-shaped metal pieces. The short connecting device can be firmly mounted, and quick switching of a short connection state and a non-short connection state can be achieved.
Owner:STATE GRID SICHUAN ELECTRIC POWER

Series motor, stator iron core and stator thereof, and manufacturing method of stator

The invention is suitable for the field of motors and provides a series motor stator iron core, a series motor stator, a manufacturing method of the series motor stator, and a series motor, wherein two iron core parts are spliced along the circumferential direction along the series motor stator iron core, each iron core part comprises a sub stator yoke and a stator tooth arranged on the sub stator yoke in a projected manner. The sub stator yoke comprises a first arc-shaped yoke part, a straight yoke part whose one end is connected with one end of the first arc-shaped yoke part, and a second arc-shaped yoke part whose one end is connected with the other end of the straight yoke part. The stator tooth is arranged on the first arc-shaped yoke part in a projected manner. The first arc-shaped yoke part and the second arc-shaped yoke part of one iron core part are respectively connected with the second arc-shaped yoke part and the first arc-shaped yoke part of the other iron core part. According to the invention, the winding efficiency of a stator winding is improved; sizes of end parts, projected from two ends of the stator iron core along the axial direction of the stator iron core, of the stator winding are reduced; the coil perimeter of the stator winding is reduced, the utilization rate of the stator winding is improved, and the cost of the series motor is lowered.
Owner:FOSHAN WEILING WASHER MOTOR MFG
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