44results about How to "Realize automatic decoupling" patented technology

The invention discloses an automatic unhooking device and an unhooking method thereof. The automatic unhooking device comprises a support. A lifting hook is connected to the bottom end of the support. A vertical insertion hole is formed in one side of the support. A rope is inserted into the insertion hole. A micro air cylinder is connected to the top end of the support. A transversely-arranged brake lever is arranged on the lower portion of the support. The acting end of the brake lever is pressed on the steel wire rope. The running end of the brake lever is hinged to the stretching-out end of the micro air cylinder. The automatic unhooking device further comprises a pneumatic reversing valve. The pneumatic reversing valve is connected with an air inlet tap and an air outlet tap of the micro air cylinder. When the micro air cylinder operates back and forth, the rope and the support are clamped together, or the support and the rope are loosened. According to the automatic unhooking device and the unhooking method thereof, operation is easy, the efficiency is high, the gas consumption is low, operation is safe, a weight can be unhooked automatically, and the personal safety during manual short-distance operation is guaranteed; especially in a flammable and combustible occasion, remote control is achieved, and the personal safety is guaranteed.

The invention provides a hanger with a hook for hoisting a crane, relates to the technical field of spreaders, and solves the problem that in the process of lifting light goods with large volume and high height, the goods themselves are prone to shake, and the Shaking can easily cause bundled goods to scatter. At the same time, when the goods reach the designated position, the operator needs to climb to the goods to unhook, which increases the risk factor of the operator, including the main body of the spreader; the upper end of the main body of the spreader is fixed A pulling head is installed, and the upper end of the pulling head is rotated to install the wire wheel; the lower end of the main body of the spreader is fixedly connected with a protective cover; the protective cover is vertically slid and installed with a hook body, and the upper end of the hook body is in contact with the hanger. The lower end of tool main body slides phase hook and pulls. In the present invention, guide rings are fixedly installed between the six support rods. On the one hand, the cover body can protect the lifting position from being hit by foreign objects. Problems with large shakes.

The invention relates to a hoisting tool for columns in the installation process of high-rise steel structure buildings, and discloses an automatic unhooking device used in the hoisting process of the columns of a steel structure. The automatic unhooking device comprises two hoisting and bearing hoops and tension adjustment mechanisms and is characterized in that each hoisting and bearing hoop is composed of a long-strip-shaped straight plate and connecting bends which are connected to the two ends of the straight plate and are perpendicular to the straight plate, the connecting bends are provided with axle holes, two hoisting lug plates are symmetrically arranged on each hoisting and bearing hoop, the two hoisting and bearing hoops are arranged in parallel, and one tension adjustment mechanism is connected between the opposite connecting bends of each hoisting and bearing hoop through a rotation shaft hinge. The automatic unhooking device has the advantages of being simple in structure, convenient to use, safe, reliable, high in applicability, convenient and flexible to assemble and disassemble on the site and capable of being recycled, achieving automatic unhooking after hoisting is completed, avoiding the security risk of operation personnel working high above the ground, improving the work efficiency of installing the steel columns, reducing the manpower consumption and the machine consumption and lowering the cost.

The invention discloses a hoisting beam suitable for a water conservancy project gate. The hoisting beam comprises a hoisting beam body connected with a crane. A first mounting seat used for mounting of a hoisting hook and a second mounting seat connected with a hoisted object and used for mounting of a hoisting shaft are arranged on the hoisting beam body. The hoisting hook can be arranged on the hoisting shaft in an unhooking manner. A linkage rod is arranged on the first mounting seat. The top end of the linkage rod is connected with a lock tongue. A lock tooth at the top of the hoisting hook is connected to the lock tongue in an abutting manner. An ejector rod is arranged on the second mounting seat. The linkage rod can be connected to the ejector rod in an abutting manner, so that the ejector rod drives the lock tongue to be opened. The hoisting hook is hooked to the hoisting shaft. According to the hoisting beam, the hoisting hook can be stably locked at the opening position through the lock tongue and the lock tooth, the linkage rod is used for controlling action of the lock tongue, and it is guaranteed that the hoisting hook is in place accurately; guide columns and guide rails are utilized for driving the hoisting hook to rotate, and the hoisting hook is opened again to the locking position; and the structure is simple, and automatic hooking and unhooking can be achieved only through a self mechanical mechanism.

The invention relates to a topological structure of a high-power charging device based on a three-level rectifier, which belongs to the technical field of high-power charging. The problem of low reliability, slow response speed and low power level of the existing electric vehicle high-power charging device is solved. The invention includes a front-stage three-level rectifier and a rear-stage DC-DC converter; the front-stage AC-DC part adopts a three-level rectification structure with a neutral line, and its three-phase independent can realize automatic decoupling, and has high power density, Low device voltage stress is convenient for device selection in practical applications, high power factor, simple control method and other advantages. The DC-DC part of the latter stage adopts a secondary boost and an improved voltage doubling unit, which has the advantages of low input current ripple, low device voltage stress, high voltage gain, and wide-range operation. The invention is applicable to the technical field of high-power charging.