30results about How to "Flexible and convenient positioning" patented technology

The invention discloses a novel hull erection method and belongs to the technical field of shipbuilding. The method includes the steps such as cutting grooves, grinding the grooves, assembling, leveling steel plates, applying pads, welding priming weld seams required for the production of positioning weld seams, welding the positioning weld seams, welding transition weld seams, welding erection weld seams, and polishing the erected whole. The novel hull erection method has the advantages that clamp plates are replaced with the positioning weld seams, the steps of welding the clamp plates and cutting the clamp plates are omitted, manpower and material resources and raw materials are greatly saved, less damage is caused to a hull, cost of polishing before and after welding is saved, and the basis for automated welding is laid.

The invention discloses a lifting type office table which comprises a first table body, a second table body and a table board, wherein the first table body is vertically connected with the second table body by taking Y axis as a center; the table board is arranged between the first table body and the second table body; the first table body and the second table body are respectively provided with a slide way, and the two slide ways are symmetric about Y axis; each of the first table body and the second table body is provided with a locating hole along the outer wall of the slide way; the table board is provided with an angle plate capable of moving up and down along slide ways; a bracket is arranged under the angle plate, and the top of the bracket is connected with each slide way by a bearing; and a locating pin connected with each locating hole by a spring is arranged under the angle plate. The lifting type office table is simple in design, reasonable in structure, convenient to operate and high in safety.

The invention belongs to the technical field of welding and relates to a welding technology for a hydraulic hard tube, in particular to an automatic welding method for a hydraulic hard tube assembly. By the adoption of the automatic welding method for the hydraulic hard tube assembly, the welding ratio of automatic welding is high, and the welding quality is stable when the hydraulic hard tube assembly is welded. According to the technical scheme, the automatic welding method for the hydraulic hard tube assembly comprises the following steps that firstly, a welding groove of a guide tube and a welding groove of a spherical joint in the hydraulic hard tube assembly are machined to be plain ends; secondly, the guide tube and the spherical joint of the hydraulic hard tube assembly generated after the first step are grouped, and the inner diameter and the outer diameter of the position, where the spherical joint and the guide tube are grouped, of the spherical joint are machined to be equal to the inner diameter and the outer diameter of the guide tube respectively; thirdly, the guide tube and the spherical joint of the hydraulic hard tube assembly generated after the second step are in butt joint with each other and located; fourthly, spot welding is conducted on the guide tube and the spherical joint of the hydraulic hard tube assembly generated after the third step; fifthly, automatic welding is conducted on the guide tube and the spherical joint of the hydraulic hard tube assembly generated after the fourth step.

The invention relates to a device and method for automatically dispensing cream solder. The device comprises a rack, a workbench device, a positioning regulation and control device, a cream solder dispensing device and an automatic control device. The method comprises the steps that a product to be dispensed with cream solder is fixed to a work panel of the workbench device, rough adjustment and fine adjustment are conducted on a cream solder dispensing operation area so as to figure out an accurate cream solder dispensing operation area, and cream solder dispensing operation is conducted on aspecific position of the surface of the product. The device is firm and stable in structure; the method adopts a PLC control system for automatic operation in the whole course, positioning is simpleand accurate, and cream solder consumption is stable; and operation quality can be effectively ensured, the cost is reduced, and the production efficiency is improved.

The invention relates to a three-dimensional digital modeling method based on a ball screen video stream. The method comprises the following steps of S1, holding a ball screen camera to carry out video shooting according to a route required by a user; S2, acquiring a hand-held ball screen camera video stream; S3, automatically extracting a key frame from the video stream; S4, using super-resolution algorithm to increase the image quality of a key frame image; S5, tracking pixel points on the key frame image to obtain dense point cloud; S6, selecting a tracked stable pixel point and using a PnPalgorithm to estimate a camera motion track so as to determine a camera position and an orientation, wherein the stable pixel point is the point in the middle area of the key frame image and the continuous tracking frame number of the stable pixel point is greater than 10 frames; and S7, carrying out three-dimensional modeling according to the dense point cloud obtained in the step S5 and the camera position and the orientation obtained in the step S6. By using the three-dimensional digital modeling method provided in the invention, fixed point shooting is not needed, three-dimensional modelestablishing stability is high and the fluency of a visual effect is high.

The invention discloses a natural gas pipe construction support device. The natural gas pipe construction support device comprises a cross beam, a longitudinal beam, a longitudinal beam driving motor,a lifter receiving groove, a lifter, a lifting hanging hook, a support leg, a pipe positioning sleeve and a pipe. The pipe positioning sleeve with a belt wheel base is provided to realize free rotating movement of pipes with different diameters during lifting when the natural gas pipe support device supports and positions the pipes; and the positioning instability caused by reverse driving of bagsleeves due to shaking of the pipes by friction between the bag sleeves for wrapping the pipes and the pipes during adjusting the positions of the pipes is not generated.

The invention relates to an ultrahigh large-diameter anti-shear block loading, unloading and locking mechanism for a simulator under the deep ocean environment. The anti-shear block loading, unloading and locking mechanism comprises a pressure drum; a sealing cover is arranged at the top of the pressure drum; a shearing slot is formed in the inner ring surface of the upper part of the pressure drum; anti-shear blocks are arranged and positioned on the sealing cover; the anti-shear blocks are clamped in the shearing slot formed on the pressure drum; the anti-shear blocks comprise oblique anti-shear blocks and straight anti-shear blocks which are arranged at the top of the sealing cover at intervals and encircle by one circle; a bearing block is arranged in the middle of the sealing cover; the mechanism also comprises an oil cylinder seat; an oil cylinder is arranged on the oil cylinder seat; the oil cylinder seat and the bearing block are integrally assembled by a bearing, so an anti-shear block loading and unloading device is formed. The anti-shear block loading, unloading and locking mechanism is flexible and reliable in use and high in work efficiency.

The invention relates to an operation positioning device and method and a robot operation system. The operation positioning device comprises a positioning ruler, an upper computer and a series-connection mechanical arm with at least six degrees of freedom. The upper computer is connected with the series-connection mechanical arm, the positioning ruler comprises two opposite surfaces allowing X-rays to transmit, the two opposite surfaces are fixedly connected through a connecting surface allowing X-rays to transmit, the two opposite surfaces are respectively provided with a group of marks, each group of marks comprise at least four mark points which are not located on the same straight line, and the mark points are X-ray-proof components. Any opposite surface or the connecting surface is fixedly connected with a ruler handle, and the ruler handle is connected with the tail end of the series-connection mechanical arm through a port. The upper computer adjusts the position of the positioning ruler by controlling movement of the series-connection mechanical arm, space positioning calculation is conducted according to the mark points in collected images, and a planning path is obtained. The device can achieve perspective positioning at any angle, and can eliminate system errors caused when an operation path is calculated, increase working space and improve the operation positioning accuracy.