65results about How to "Avoid turning around" patented technology

The invention belongs to the technical field of coal mine underground support, and particularly relates to coal mine return air crossheading roadway non-repetitive supporting outfit. The problem thatduring existing coal mine underground temporary support, repetitive supporting exists, and the damage to a top plate is accelerated to different degrees is solved. The coal mine return air crossheading roadway non-repetitive supporting outfit comprises a single-straddle-type supporting device and a crossheading supporting device carrier, the single-straddle-type supporting device comprises a crossbeam and a stand column which can stretch out and draw back, the crossheading supporting device carrier comprises a trackless explosionproof rubber-tied vehicle, a lifting platform and a rotating andclamping device, the rotating and clamping device is arranged on the lifting platform and can act on the single-straddle-type supporting device, through lifting, the single-straddle-type supporting device is connected with the top and separated from the top, after being separated from the top, the single-straddle-type supporting device is rotated by a limited angle and clamped through the rotating and clamping device, and then the crossheading supporting device carrier carries out carrying. By means of the coal mine return air crossheading roadway non-repetitive supporting outfit, a reliableand flexible supporting condition is created for safely and efficiently mining of a fully-mechanized coal mining face, non-repetitive supporting of the top plate can be achieved, and the integrity ofthe top plate is guaranteed; meanwhile, the coal mine return air crossheading roadway non-repetitive supporting outfit is significant in completing the mechanized mining technology of a tunneling face, increasing the mining speed and improving the production efficiency.

The invention provides a retractable cantilever goods shelf. The retractable cantilever goods shelf facilitates goods taking of a forklift, and meanwhile reduces the width of a passage and improves the space utilization rate of a goods house. The retractable cantilever goods shelf comprises a cantilever goods shelf main body and is characterized by also comprising slide rails and movable shelves, wherein the slide rails are transversely mounted on both sides of the cantilever goods shelf main body, and the movable shelves are mounted on the slide rails. The inside of every slide rail is provided with a pulley set, and the bottom of every movable shelf is provided with a slide groove corresponding to the corresponding slide rail; the slide rail on every layer is connected with a transmission shaft which can drive the corresponding movable shelves to move transversely; the transmission shaft at the top end of the cantilever goods shelf body is driven by a hand mechanism at the lower end of the cantilever goods shelf body, and the transmission shafts are mounted inside the slide rails and provided with driving wheels.

The invention discloses a detector used for positioning a power distribution network fault. The detector comprises a detection device, wherein a box cover is hinged to the top of the detection devicethrough a hinge pin; four corners of the left side of the detection device are independently fixedly connected with an idler wheel; the left side of the detection device is provided with a concave plate; and the left side of the detection device is fixedly connected with base plates positioned on the left side and the rear side of the concave plate. By use of the detector, a user drives the detection device to rotate to a certain degree through the base plates, the position of the concave plate is fixed through a fixing mechanism by a screw, so that the concave plate supports the detection device which achieves a proper angle, and therefore, the detector has the advantage that the angle of the detector for positioning the fault can be regulated, the problem that the user can not observe the display of the detector for positioning the fault from a proper angle since an existing detector for positioning the fault is only supported by the base plate but is not provided with a certain regulation mechanism can be solved, and the practicality of the detector for positioning the fault is improved.

The invention relates to the technical field of composite flexible circuit boards, in particular to a composite flexible circuit board for a capacitive touch screen, which comprises a circuit board body. A fixing structure is arranged on the circuit board body; a connecting structure is arranged on the inner side of the fixing structure; a furling structure penetrates through the circuit board body; a retaining structure is arranged on the inner side of the furling structure; and the side surface of the circuit board body is provided with a layered structure. The connecting position of the circuit board body and the port is protected through the fixing structure, the interface is prevented from being damaged by pulling, the circuit board body is conveniently disassembled and assembled through the connecting structure, the circuit board body with the redundant length is wound through the winding structure, and the internal space of the device shell is saved. The condition that the rolled circuit board body rotates is avoided through the retaining structure, and a gap between the circuit board bodies which are arranged on the two sides in an overlapped mode is supported through the layered structure, so that attachment is avoided.