67results about How to "Stable and safe lifting" patented technology

The invention relates to a hoisting method of an ultra-large cirque part. The method comprises the following steps that (1) a plurality of auxiliary hoisting tools are fixed at the circumference of the external circumferential edges of an ultra-large cirque part horizontally arranged; (2) a hoisting device with main hooks and auxiliary hooks are moved to the ultra-large cirque part, the cable wires on the main hook round the external circumference of the art and are clamped on the auxiliary hoisting tool, and the cable wire on the auxiliary hook passes through the internal round of the part; (3) the auxiliary hook is lifted with the ultra-large cirque part being gradually pulled from horizontal state to vertical state; (4) the main hook is lifted to lead the cable wire on the main hook to be tightened, thus leading the main hook to bear the weight of all the whole ultra-large cirque part; (5) the auxiliary hook is loosened, and the ultra-large cirque part is hoisted and pulled to the installation position by the main hook. By the arrangement of the structure and the method, large or even ultra-large cirque parts can be easily hoisted without affecting that the parts takes internal holes as the installation positions and damaging the part; furthermore, the invention has the advantages of stable and safe hoisting and high efficiency.

The invention relates to a scissors-type accessible elevating platform, comprising a scissors-type machine frame, an elevating platform, a hydraulic cylinder elevating mechanism and an automatic plate-turnover mechanism. The scissors-type machine frame comprises a bottom frame, a scissors-type inside / outside arm support, an inclined-supporting track, a cam plate and an oil-cylinder roller wheel; the bottom end of the scissors-type inside / outside arm support is installed at the bottom frame, the inclined-supporting track is installed at the hinge position of the scissors-type inside / outside arm support, the cam plate is installed at the arm support and supports the oil-cylinder roller wheel, the oil-cylinder roller wheel is connected with a hydraulic cylinder. The hydraulic cylinder is installed at the upper end of the arm support, and the hydraulic cylinder rod is connected with the oil-cylinder roller wheel. The automatic plate-turnover mechanism comprises a plate-turnover oil cylinder, a plate-turnover oil cylinder support seat, a plate-turnover gas spring, a plate-turnover connecting strip, a plate-turnover connecting strip lug and a turnover plate; the rod of the plate-turnover oil cylinder is connected with the plate-turnover connecting strip and then is connected with the plate-turnover connecting strip lug, one end of the turnover plate is connected with the plate-turnover connecting strip lug, and the plate-turnover gas spring is connected with the turnover plate. The scissors-type accessible elevating platform is driven by hydraulic pressure, and the elevating is smooth and safe; the device is directly installed at the ground, and the pit which is matched with civil construction is not required, the construction is simple and convenient; the maintenance is simple and convenient, and the operation is simple.

The invention belongs to the technical field of aerospace heavy equipment testing, and relates to a large-scale heavy-duty support lifting system; it is composed of a support frame and a mobile platform, a counterweight frame and a counterweight platform, a support rod assembly and a wire rope pulley seat assembly; The motor drives the gear box on the mobile platform, and the rack and pinion structure drives the entire mobile platform to go up and down in the vertical direction at a long distance; For the movement of two degrees of freedom, the designed lifting stroke can reach 13m, and the designed horizontal movement stroke can reach 1m; in order to ensure the stability and safety of lifting, a counterweight platform is added to balance the overall weight of the mobile platform and the load; the horizontal movement is The lead screw is driven by the servo motor to move the support rod assembly in a short horizontal stroke at a low speed; the system is characterized by large load capacity, high motion precision, and high operational safety and stability.

The invention discloses a lifting table for machinery manufacturing. The lifting table comprises a base, a bottom plate and a supporting plate; a semi-spherical groove is formed in the lower end of the base; a semi-spherical block is put in the semi-spherical groove; the bottom plate is fixedly welded to the lower end of the semi-spherical block; pressure springs are fixedly welded to the lower end of the base, and the other ends of the pressure springs are fixedly welded to the upper end of the bottom plate; a rotary motor is mounted at the upper end of the base; a screw rod is fixedly mounted at the upper end of the rotary motor; a coupler is mounted between the rotary motor and the screw rod; the screw rod is sleeved with a rotary nut; connecting rods are fixedly welded to the side surface of the rotary nut; round pipes are fixedly welded to the side surfaces of the connecting rods; threaded columns are fixedly welded to the upper end of the base; the threaded columns are sleeved with the round pipes; and supporting rods are fixedly welded to the upper ends of the connecting rods. The lifting table for machinery manufacturing is good in buffering effect, and furthermore liftingis stable and safe.

The invention discloses a heavy fixture suitable for transfer of a cylindrical thin shell and an application method thereof. The furniture comprises a base, clamping jaws and power devices for pushingand pulling the clamping jaws, wherein the bottom of the base is provided with an arc-shaped clamping plate, the shape of the clamping jaws is matched with the shape of the arc-shaped clamping plate,the pair of clamping jaws are symmetrically connected to the bottom of the base relative to the arc-shaped clamping plate, the upper ends of the two clamping jaws are hinged with the power devices, the arc-shaped clamping plate at the bottom of the base simultaneously serves as a sliding rail during movement of the clamping jaws, and the power devices push the clamping jaws to move along the sliding rail so as to realize the operation of clamping and loosening a product. The clamping jaws can almost slide to the maximum coated clamping position against the outer wall of the cylindrical thin shell, so that guarantee is provided for safe and stable hoisting and transfer of the product; the clamping jaws can slide along the outer wall of the cylindrical thin shell, so that the fixture can clamp the cylindrical thin shell under the condition that the space gap is small; and a matched rigid hoisting mechanism can enable a travelling crane or a crane to stably and safely hoist the cylindrical thin shell under the condition that the space gap is small.

The invention discloses an electric hoisting device for an air duct, comprising: a hoisting frame for carrying the air duct, a guide wheel assembly for supporting and driving the movement of the air duct, a transmission device for driving the movement of the guide wheel assembly, and a A limit device that restricts the movement of the guide wheel assembly after the air duct is lifted in place. The hoisting frame is provided with a guide rail for moving the guide wheel assembly and a limit hole for fixing the limit device. The transmission device is located on one side of the hanger. The transmission device is connected with the guide wheel assembly. The air duct electric hoisting device provided by the invention can meet the requirements of narrow construction space, and the device is efficient and reliable, has good safety performance, and can be widely popularized and applied.

The purpose of the present invention is to provide a fire rescue vehicle. A fire rescue vehicle, comprising: a car body, a high-altitude working platform equipped with a fire extinguishing device, an X-Y hydraulic slide table arranged at the upper end of the car body, a turntable arranged at the upper end of the X-Y hydraulic slide table, and behind the upper end of the turntable The side is equipped with a connecting seat with an escape through hole, a supporting cylinder hinged with the front side of the upper end of the turntable, a support frame hinged at the middle with the piston rod of the supporting cylinder, and an escape channel connected with the connecting seat and the rear end of the aerial work platform at both ends. Four hydraulic lifting arms are distributed along the escape passage and the two ends are respectively hinged with the front end of the connecting seat and the rear end of the aerial work platform; the first hydraulic lifting arm and the second hydraulic lifting arm are arranged side by side horizontally, and the third hydraulic lifting arm and The fourth hydraulic lifting arm is vertically aligned and arranged; the two ends of the support frame are connected with the first hydraulic lifting arm and the second hydraulic lifting arm in one-to-one correspondence. The fire rescue vehicle has high efficiency in rescuing trapped persons and can also take into account fire fighting.