7results about How to "Solve transportation difficulties" patented technology

This invention provides a water-blocking device for a tunneling machine and a tunneling machine in the field of tunneling equipment technology. The water-blocking device for the tunneling machine includes a fixing member for fixing to the bottom of the shield body. A sealing member for sealing the gap between the bottom of the shield body and the tunnel wall is installed on the fixing member. The sealing member has a contact surface for contacting the tunnel wall. The water-blocking device also includes a control structure connected to the sealing member to control the contact surface's contact or detachment from the tunnel wall. The contact surface of the sealing member can seal the gap between the bottom of the shield body and the tunnel wall, preventing water from seeping into the tunnel, flowing water behind the tunnel, or water used for construction from flowing to the front of the shield body and mixing with the excavated rock. This prevents the excavated rock transported to the conveyor belt from having excessive moisture content, causing transportation difficulties and ensuring the normal excavation function of the conveyor belt. Excavation is not required by manual assistance, saving manpower and time. The contact surface of the sealing member can also detach from the tunnel wall, facilitating the tunneling machine's forward movement and avoiding excessive friction that could affect its service life.

The application discloses a latch sleeve advance positioning method and advance positioning device, which comprises the following steps: designing an upper beam, marking the longitudinal center line and the transverse center line of the upper beam, assembling a latch support on both sides of the bottom of the upper beam, assembling a pair of upper pads at the bottom end of the upper beam, marking the longitudinal center line and the transverse center line of the latch support, locating the center of the latch hole of the latch support on the longitudinal center line, boring the latch hole of the latch support, placing the upper beam and the latch support assembly on the upper cover plate of the machine arm, installing the processed latch sleeve at the front end of the latch, and pushing the latch so that the latch sleeve is just pushed into the ear beam hole on the machine arm. According to the application, the processed latch sleeve is pushed into the ear beam holes on both sides of the machine arm along the installation path of the bridge crane support leg to be installed according to the upper beam and the latch support, and then is positioned and welded, so that the workload of welding and then processing the latch sleeve is reduced, and the coaxiality of the latch sleeves on both sides of the ear beam is further ensured.

The invention relates to a device and method for strengthening lower tower liquid conveying through an air extractor and air separation equipment. The vacuum generator unit is configured to be connected with a liquid outlet pipeline of a lower tower of the air separation equipment; the vacuum generator unit comprises a Venturi ejector and a hot gas introduction valve; the venturi ejector comprises a contraction section, a throat pipe section and a diffusion section which are communicated in sequence; the contraction section is configured to be communicated with a lower tower liquid outlet pipeline and is used for inputting lower tower liquid; the throat pipe section is communicated with the hot gas leading-in valve and is used for inputting hot gas through the hot gas leading-in valve; the diffusion section is communicated with the liquid conveying main pipeline, and the liquid conveying main pipeline is configured to be communicated with the upper tower feeding hole. Local vacuum is formed through hot gas injection, the resistance of a conveying pipeline is reduced while partial vaporization of liquid is achieved, efficient enhancement of liquid conveying of the lower tower of the air separation equipment is achieved, the problem that liquid is difficult to convey to the upper tower when the working pressure of the lower tower is low in the air separation start-up and operation process is solved, and application and popularization are facilitated.

The invention discloses a large-width gallery bridge unit capable of being disassembled and packaged and a construction method thereof.The large-width gallery bridge unit comprises a roof unit, a ground unit, stand columns and curtain wall units, the roof unit comprises two roof subframes, and roof cross beams of the two roof subframes are detachably connected; a supporting piece is detachably fixed below the connecting position of the roof cross beam; a pin shaft is rotationally arranged on the supporting piece; vertex angle pieces are arranged at the four corners of the roof frame, a tensioning device is arranged in each vertex angle piece, the tensioning devices on the two sides are connected through a steel strand, and the steel strand penetrates through the lower portion of the pin shaft; the ground unit comprises two ground subframes, and ground cross beams of the two ground subframes are detachably connected; four corners of the ground frame are provided with external corner fittings; the two ends of the stand column are detachably connected with the top corner piece and the outer corner piece correspondingly. The curtain wall unit is installed on the outer vertical face of the large-width gallery bridge unit. The ultra-wide gallery bridge unit can be transported in a split mode, spliced and tensioned, and the problems that the ultra-wide gallery bridge unit is difficult to transport and the splicing rigidity is reduced are solved.

According to the underground excavation arch cover method, the construction method utilizing the permanent and temporary combination of the middle plate and serving as the supporting system adopts an open excavation and underground excavation partition collaborative operation mode, and through the permanent and temporary combination design of the top plate, the middle plate and the bottom plate of internal facilities, the supporting arch cover, the unit top plate, the unit middle plate, the unit bottom plate and other structures serve as temporary supports in the construction stage; the operation stage is directly converted into a permanent structure, dismantling of a temporary support and material waste in a traditional open excavation method are avoided, consumption of building materials such as steel and concrete is remarkably reduced, meanwhile, manpower and time cost of the dismantling procedure is reduced, and comprehensive economic benefits are obviously improved. The method can flexibly adapt to the scene that existing buildings exist around the foundation pit, and the influence on the surface buildings is reduced to the maximum extent through reasonable division of the open excavation area and the underground excavation area.

This utility model provides a charging system suitable for drones, relating to the field of charging technology, including: a charging mechanism; the charging mechanism includes a charging shell, inside which a conveyor belt is arranged, the conveyor belt can rotate counterclockwise or clockwise by a driving mechanism, several charging platforms are arranged on the conveyor belt, each charging platform has a recessed charging port on its left or right side, and an electronic rotating mechanism is arranged at the bottom of the charging platform for tilting the charging platform to the left or right at a certain angle; a power receiving mechanism; the power receiving mechanism includes a power receiving base, the top of which has a spring buckle for locking onto the drone, and a telescopic charging rod is arranged on the left or right side of the power receiving base. This utility model can simultaneously solve the problems of difficult outdoor charging and transportation of drones.

The utility model relates to the technical field of supporting frames, in particular to an anti-vibration supporting frame for an ultrahigh altitude tower drum. According to the technical scheme, the tower drum supporting frame mainly aims at solving the problems that an existing tower drum supporting frame is not adaptive to extreme working conditions such as strong wind, low temperature and complex vibration in an ultrahigh altitude area due to structural design and material selection, vibration resistance is insufficient, materials are prone to losing efficacy, and the stability of a tower drum is difficult to guarantee. The multiple sets of connecting rings are arranged on the outer side of the inner supporting frame, flange plates are installed on the side faces of the connecting rings, and the flange plates are connected with the tower drum through bolts; the connecting assembly is installed in the inner supporting frame and used for connecting multiple sections of tower barrels; and the buffering mechanism is arranged on the connecting assembly and used for improving the bearing capacity. The supporting frame effectively overcomes the defects of an existing supporting frame under the ultrahigh altitude extreme working condition, guarantees stable operation of the tower drum, reduces safety risks and improves power generation efficiency.