7results about How to "Easy to adjust posture" patented technology

This invention provides a shield tunnel construction anti-deviation structure, including a shield machine (TBM), with a tunnel segment connected to one axial side of the TBM. An adjustment mechanism is provided between the TBM and the tunnel segment, adapted to drive the TBM to move radially along the tunnel segment. A positioning groove is formed on the side of the TBM facing the tunnel segment, and a protective opening communicating with the positioning groove is formed on the radially outer side of the TBM. The protective opening is an openable and closable protective opening. This shield tunnel construction anti-deviation structure, through the coordinated arrangement of the sensing mechanism and the adjustment mechanism, utilizes an angle sensor and an angle sensing plate to quickly sense the angular deviation of the TBM, facilitating the adjustment mechanism to deflect the entire TBM, and enabling the TBM to adjust its attitude within a small range, reducing cutterhead wear and increasing the service life of the TBM.

The present application belongs to the technical field of shield tunnel engineering, and particularly relates to a construction method for shield ground-to-ground butt joint in strong water-permeable sand stratum, comprising the following steps: first, stop the shield machine, keep pressure and grout the surrounding stratum for reinforcement, then, the trailing shield machine is grouted in advance for reinforcement, the posture of the trailing shield machine is adjusted, the butt joint position of the two shield machines is frozen and reinforced in the grouted and reinforced stratum, and the like. The construction method solves the problems that single method for stratum reinforcement in strong water-permeable sand stratum cannot meet the requirements of shield ground-to-ground butt joint and shield posture adjustment in strong water-permeable sand stratum, shortens the stratum reinforcement time, reduces the stratum frost heaving and thawing settlement effect, improves the shield butt joint construction efficiency, and reduces the longitudinal deformation of the formed tunnel.

The utility model relates to mechanical equipment and industrial production field discloses a kind of walking device component grabbing mechanical arm.The mechanical arm cooperates lift, aluminium alloy truss, so that equipment can be translated along X, Y, Z three directions, can cover armored vehicle whole vehicle length and height, while jaw assembly has axial and circumferential adjustment degree of freedom, so that posture adjustment is more quickly convenient, satisfies variable-speed positioning requirement.Fast-changing shaft seat and special lifting appliance in it expand the range of components applicable to mechanical arm, and the special material car solves the deficiencies of space occupation and low transfer efficiency of component stall type placement, and improves the use efficiency of mechanical arm together.

This utility model discloses a wireless transformer oil level testing device based on ultrasonic technology, including a mounting plate and an ultrasonic probe. A magnetic suction assembly is provided on the side of the mounting plate away from the ultrasonic probe. A bracket is fixedly connected to the outer wall of the mounting plate via a locking rod. The ultrasonic probe is fixedly connected to the bracket on the side away from the mounting plate. In this application, the mounting plate is fixed to a suitable position in the transformer oil tank using magnetic suction blocks. The bracket is snapped onto the protruding frame, thus achieving quick alignment between the bracket and the mounting plate. Tightening the locking rod secures the bracket, thereby installing the ultrasonic probe. Finally, tightening the protective cover completes the assembly of the wireless testing device. Subsequent disassembly and assembly of the ultrasonic probe and its connecting components can be achieved simply by separating the locking rod. By designing the magnetic suction structure and connecting components separately, both installation flexibility and ease of disassembly and assembly of the ultrasonic probe and its connecting components are maintained.

The application provides a test device for solving the problem that the wireless communication performance of an electronic device is not intuitive enough when displayed in a promotion process, resulting in low participation and credibility of consumers. The test device comprises a shielding shell assembly, and a first accommodating space for accommodating the electronic device is arranged in the shielding shell assembly. At least part of the shielding shell assembly is a transparent area, the transparent area of the shielding shell assembly is used for observing the display screen of the electronic device from the outside of the shielding shell assembly, and a sandwich space is arranged in the transparent area of the shielding shell assembly and used for injecting a transparent liquid. The shielding shell assembly and the liquid layer in the sandwich space form a closed shielding body by using the shielding effect of the transparent liquid in the sandwich space on electromagnetic waves, so that the electronic device is in a weak field environment, consumers can observe the running state of the electronic device in the first accommodating space in real time through the transparent area on the shielding shell assembly, the whole test process is visible, and the participation and credibility of consumers are higher.

The invention relates to the technical field of gantry machining equipment, and particularly provides a tool changing mechanism for a gantry machining center, which comprises a moving assembly, a clamping assembly and a tool changing assembly, the clamping assembly is used for clamping a cutter on the cutter bin frame; the moving assembly is connected with the clamping assembly and used for driving the clamping assembly to move. The tool changing assembly comprises a support structure and a fixing base. The fixing base is arranged on the support structure, a fixing groove is formed in the fixing base, and the fixing groove is upwards provided with an opening allowing the cutter to be inserted. The moving assembly is used for driving the clamping assembly to move to the position above the fixing groove of the tool changing assembly and enabling the clamping assembly to release the clamped tool into the fixing groove. The clamping assembly is driven by the moving assembly to automatically grab and carry the tools, automatic storage and exchange of the tools are completed in cooperation with the tool changing assembly, the tool changing efficiency of the gantry machining center is remarkably improved, and the labor intensity and the safety risk are reduced.

The invention discloses a dexterous hand based on shape memory alloy transmission. The dexterous hand comprises an arm module, a wrist module and a palm module which are sequentially connected. A thumb module and a plurality of finger modules are arranged on the palm module; the device further comprises an SMA transmission module. The SMA transmission module comprises an SMA driver, a shape memory alloy and a transmission tendon rope; the finger module and the thumb module are provided with finger tendon rope fixing points, reset tension springs and reset tendon ropes. When the fingers need to be driven, the shape memory alloy is powered on through the SMA driver, the shape memory alloy is heated and shrunk after being powered on, and then the transmission tendon rope is driven to enable the fingers to be bent. When the fingers need to be reset and straightened, the SMA driver controls the shape memory alloy to stop heating, the shape memory alloy is cooled, and under the action of the reset tension spring, the reset tendon rope is pulled, so that the joints are reset.