37results about How to "Unlimited width" patented technology

The invention discloses a banding moving object tightening differential adjustment method, which comprises the following steps: monitoring bias condition of banding moving object and reducing tensile force of stretch roll in bias direction. The device comprises bias sensor, stretch roll and tensile force driving device connected with the two sides of stretch roll. Bias sensor connects control device of tensile force, via which tension-adjusting gear connects with tensile force driving device. Compared with existing technology, the greatest difference is that, according to bias condition of banding moving object, the invention adjusts tensile force of tension roll in time to ensure tensile force bias of the two sides and achieve correcting error. The invention has the advantages of simplicity of structure, low error rate, high reliability, no limitation of width of banding moving object, wide application area and so on.

The invention discloses a banding moving object tightening differential adjustment method, which comprises the following steps: monitoring bias condition of banding moving object and reducing tensile force of stretch roll in bias direction. The device comprises bias sensor, stretch roll and tensile force driving device connected with the two sides of stretch roll. Bias sensor connects control device of tensile force, via which tension-adjusting gear connects with tensile force driving device. Compared with existing technology, the greatest difference is that, according to bias condition of banding moving object, the invention adjusts tensile force of tension roll in time to ensure tensile force bias of the two sides and achieve correcting error. The invention has the advantages of simplicity of structure, low error rate, high reliability, no limitation of width of banding moving object, wide application area and so on.

The invention relates to a bow and stern pontoon type shipbuilding platform, which comprises: a main hull of a cuboid box-shaped structure, a number of keel piers are set up on the deck along the direction of the ship's length, and a number of ballast tanks bounded by bulkheads are formed in the main hull The first pontoon and the stern pontoon are correspondingly set up at the fore and stern positions of the main hull to ensure the stability of the main hull. At least one of them is provided with ship repairing equipment; a ballast system for ballasting or draining the ballast tank, the fore pontoon and the stern pontoon. Its advantages are: only the pontoons are set at the bow and stern of the hull, there is no restriction on the side, the width is not limited when the platform is entered and exited in sections by ship repairing or construction, and the stroke of entering and exiting the platform is short, which is convenient for operation. It effectively meets the requirements of the ship repairing / building operation site, enables the existing facilities of the wharf to be fully utilized, facilitates the hoisting and moving work of the ship repairing / building, and can significantly improve the efficiency of ship repairing and building construction operations.

The invention relates to a novel energy-efficient fin type electric heating pipe which comprises a shell, a heating wire and heat-conducting insulating padding. A strip-shaped cooling fin is spirally wound on the outer surface of the shell and provided with continuously-distributed fan-shaped concave-convex structures, the shrinkage end of each structure is close to the surface of the shell, the unfolded end of each structure is close to the outer edge of the fin, and a smooth arc transition face is arranged between each unfolded end and the outer edge of the cooling fin. Mounting seats are connected with the shell in a sealed mode, power lines are arranged on the end portions of the mounting seats, and the power lines are connected with the heating wire in the shell through the mounting seats. The continuous concave-convex structures which are arranged at intervals are adopted by the cooling fin, the fin can be conveniently wound on the shell, and internal stress of the cooling fin is effectively eliminated. Welding machining is facilitated, the width of the fin is not limited, the cooling area is enlarged, the cooling effect is better, and the service life of the electric heating pipe is longer. Cooling efficiency of the fin is enhanced, the power of the electric heating pipe can be properly lowered, and the purposes of efficiency raising and energy saving are achieved.

The invention provides a book binding method. The method mainly comprises the following steps: after a book core of a book is molded, multiple through holes are drilled in the side edge of a book spine of the book core; and nails are inserted in the through holes for fixing the book core through the through holes. A book nailing device consists of a book spine clamping piece, a nail gun fixing frame and a nail gun guide rail; a hole position is arranged on the book spine clamping piece; the book spine position of the book core is clamped by using the book spine clamping piece; a nail gun is fixedly mounted by using the nail gun fixing frame; the nail gun guide rail is connected with the nail gun fixing frame; the nail gun fixing frame moves in the horizontal position; a nail outlet of thenail gun is aligned to the hole position in the book spine clamping piece; and the nail is driven into the hole position. The book is produced by the method; the problems in a traditional circular spine or square spine book binding mode are thoroughly solved; and the thickness, the width and the length of the book cannot be limited, and can be infinitely amplified.

The invention relates to a safety coupler of a cordless electric appliance, which comprises an appliance input socket and an electric connector, wherein the inside of the electric connected is provided with a power-receiving connecting terminal and at least one power supply contact piece, and the input socket is provided with a cylindrical power-receiving connecting terminal and an annular power-receiving connecting terminal. The safety coupler is characterized in that: the power-receiving connecting terminal corresponding to the power supply contact piece is an elastic piece; the power-receiving connecting terminal is provided with a pushing part which is made of conductive material and is matched with the corresponding power-receiving connecting terminal; when the electric connector is not plugged in the appliance input socket, the power supply contact piece and the corresponding power-receiving connecting terminal are kept in a contact normal open state; when the electric connector is plugged in the appliance input socket, the annular power-receiving connecting terminal directly participates in the contact with the pushing part to push the power-receiving terminal and the corresponding power supply contact piece close to turn on power. Due to the direct cooperation between the annular power-receiving connecting terminal and the pushing part made of the conductive material, a specially arranged contact closing and opening structure is saved, the structure of the safety coupler is simplified, and the production and manufacturing cost of the coupler is reduced.

The invention discloses a vibration experimental platform for a thin-walled member fatigue test. The vibration experimental platform comprises an excitation source test device and an end clamp on a platform base; the excitation source test device comprises a U-shaped bracket; a laser displacement sensor is disposed on the bottom of the U-shaped bracket; first hinge pins are disposed on both sides of the upper end of the U-shaped bracket; the first hinge pins are sleeved by boxes; damping springs are arranged between each box and both ends of the corresponding box; piston vibration exciters are disposed on the tops of the boxes; first screws are disposed in the boxes; each first screw is provided with two symmetrical wedges; the lower ends of the wedges are in contact with a upper splint; the bottom cover of each box is provided with a lower splint; the upper and lower splint are cooperating with each other to form a clamp for sandwiching the thin-walled member; and a speed sensor and an acceleration sensor are arranged on one end of the excitation source test device on the thin-walled member. The vibration experimental platform can equivalently regenerate the fatigue process of an aviation aluminum alloy thin-walled component in a relatively short period, and calculates and evaluates the service life of the component.