8results about How to "Avoid unwinding" patented technology

The application discloses an anti-unwinding flexible spacecraft attitude tracking composite control method, first, based on the quaternion method, a flexible spacecraft attitude tracking error kinematics and dynamics model is established; then, the flexible accessory vibration mode, external environmental disturbance and model uncertainty are regarded as a lumped disturbance, a generalized proportional integral observer is designed, and the lumped disturbance is observed and estimated; finally, a non-singular terminal sliding mode surface is constructed, the lumped disturbance observation and estimation compensation of the generalized proportional integral observer is taken as a feedforward signal, and a feedforward-feedback anti-unwinding attitude tracking composite controller is designed. Through determining appropriate control gain, the closed-loop attitude tracking error system is globally finite time stable, and the anti-unwinding effect can be realized. The application can realize finite time attitude tracking of the flexible spacecraft, has high attitude tracking precision and strong robustness.

The utility model discloses a kind of transfer devices of belt reel, it is related to tool equipment technical field, wherein, the transfer device of belt reel, it includes: base, its bottom is provided with wheeled walking component;At least two support frames, it is slidably installed with the base, and all the support frames are provided with axis hole that is axially horizontal and mutually overlapped, for the penetration of load shaft, the axial direction of the axis hole is consistent with the sliding direction of the support frame;Driving assembly, it is fixedly installed with the base, for driving adjacent two support frames close or away;The transfer device of this belt reel, by setting support frame that can relatively move on base, the quick support of reel shaft is realized, and belt is extruded from both ends by support frame, effectively avoid its unwinding, to reduce its damage condition in the process of transfer, reduce the transfer difficulty of belt.

This application relates to the field of amorphous magnetic core production technology, and in particular to an amorphous magnetic core winding device, including a processing table. A base is fixedly connected to the top of the processing table, and a horizontal plate is fixedly connected to one side of the top of the base. The horizontal plate is vertically arranged on the base, and a winding assembly is provided on the horizontal plate. The winding assembly includes a drive shaft, on which a winding roller is mounted. A rotating shaft is rotatably connected to the horizontal plate, on which a guide roller is mounted. An adjustment assembly is provided on the horizontal plate, including a mounting base. A servo motor is mounted on the top of the mounting base, and a lead screw is rotatably connected to the bottom of the mounting base. A movable seat is movably mounted on the lead screw, and a tension roller is rotatably connected to the movable seat. This solution, by designing an adjustment assembly, can adjust the tension during the winding process of amorphous magnetic cores, thereby improving the winding effect and avoiding loose winding.

The utility model belongs to the technical field of hot rolled strip production, and particularly discloses a novel anti-loosening auxiliary device of a hot rolled strip coiling machine, which comprises a workbench, a coiling mechanism is arranged on one side of the top of the workbench and comprises a support plate, and the top of one side of the support plate is rotatably connected with a transmission rod through a bearing. One end of the transmission rod is fixedly provided with a positioning rod, the surface of the positioning rod is sleeved with a winding roller body, one end of the positioning rod is in threaded connection with a positioning threaded sleeve, a hot rolled strip body is curled on the surface of the winding roller body, and the top of the workbench is provided with an anti-loosening mechanism which comprises a first electric push rod; a supporting frame is fixedly installed at the output end of the first electric push rod, a bearing roller is rotationally connected to an inner cavity of the supporting frame, and a moving mechanism is arranged at the bottom of the workbench. And by arranging the curling mechanism, the hot-rolled strip body can be curled, and the winding roller body can be conveniently detached from the positioning rod by screwing off the positioning screw sleeve.

The utility model discloses a kind of coating devices for lithium battery production, belong to lithium battery production equipment technical field, including device base, unwinding structure, coating structure and winding structure;The unwinding structure includes two unwinding supports, two electric supports and two front guide supports, two The unwinding support is fixedly connected in the front of the outer surface of device base, two The electric support and two front guide support are fixedly connected in the top of the outer surface of device base;The coating structure includes support outer frame, the top of support outer frame is fixedly connected with stirring barrel, the inner side of the bottom of support outer frame is fixedly connected with fixed round block in the center, the bottom of fixed round block is fixedly connected with hydraulic cylinder, the right and left sides of the outer surface of support outer frame are respectively fixedly connected with driving motor in the center;The present technical scheme solves the problem that the coating device in the prior art is prone to deviation, wrinkling or even breaking during transmission.

The utility model relates to the technical field of winding devices, and discloses an embedded sealing strip winding device which comprises a frame body, the inner wall of the frame body is rotationally connected with a guide roller, the side wall of the guide roller is rotationally connected with a transmission rod, and the inner wall of the frame body is provided with a winding assembly. According to the embedded sealing strip winding device, before being wound by the winding roller, the sealing strip passes through the guide groove and the guide path to be tightly attached to the section contour of the sealing strip, the sealing strip is forced to keep a correct posture, winding deformation or indentation caused by abnormal posture is prevented, opposite movement of the clamping plates is prevented, and then the device is matched with sealing strips of different sizes; the device is suitable for sealing strips with different widths and heights, the positions of the sealing strips can be stabilized in the guiding process after the clamping plates clamp the sealing strips, the sealing strips are prevented from deviating or inclining in the high-speed movement process, the lower pressing plate provides continuous and stable pressing force, the sealing strips are prevented from being loosened, and the shape of the rolled sealing strips is kept compact and stable.

The present application relates to the field of medical devices, and provides a medical stent, which comprises a tubular mesh structure composed of a plurality of interconnected wave rods, and an enhanced imaging area is arranged on at least one wave rod, and a development wire winding is wound around the enhanced imaging area, which is beneficial to enhance the development performance of the medical stent, and does not increase the delivery resistance of the medical stent. Further, the wave rod is further provided with a limiting structure located at both ends of the development wire winding in the enhanced imaging area, which can avoid displacement or uncoiling of the development wire winding, so that the accuracy of the development image obtained by using the medical stent is higher. The present application further provides a forming method of the above medical stent, which has a lower cost and the formed medical stent has the same or similar advantages.

This utility model discloses a thin-walled pier construction device, including a welding machine. Connecting plugs are inserted into both ends of the welding machine's front surface, and connecting cables are fixedly installed on the front surface of the connecting plugs. Through the arrangement of the connecting plugs, connecting cables, and conductive slip rings, this utility model enables the connection between the welding machine and the welding wire. Because the connecting cables and the welding wire are respectively connected to the stator and rotor on the conductive slip ring, the rotor on the conductive slip ring can be driven to rotate during the subsequent winding of the welding wire, preventing damage to the welding wire due to stress. Furthermore, the inclusion of a fixing frame, winding reel, receiving hole, adjusting screw, moving clamp, annular frame, and locking holes facilitates quick winding and storage of the welding wire after the thin-walled pier reinforcement welding is completed, preventing knots and tangles during transport.