38results about How to "Avoid hot work" patented technology

The invention relates to the technical field of drilling and completion of a multilateral well, in particular to a multilateral well angular difference adjustment tool and an angular difference adjustment method thereof. The multilateral well angular difference adjustment tool comprises three reversing sleeves. The circumference of two ends of each reversing sleeve is processed with 20 splines or end face teeth at an equal angle. The angular difference exists between a center line of the concave portion of the female end of the reversing sleeve and a center line of the convex portion corresponding to the male end in the counter-clockwise direction. The reversing sleeve can be designed to be 5 angular differences, namely, 0 degree, 1 degree, 2 degrees, 5 degrees and 10 degrees. According to the multilateral well angular difference adjustment tool, the anti-twisting property of a whole tubular column of the multilateral well is improved after the angular difference adjustment, the adjustment precision of the angular differences and the strength are high, the multilateral well angular difference adjustment tool is simple and convenient to operate, hot work of well site welding is avoided, and risks in the construction processes of the multilateral well are reduced.

The invention discloses a forging device for a gas stove head assembly. The forging device comprises a conveying mechanism, a heating furnace and a forging press, wherein the conveying mechanism comprises a first sliding passage and a second sliding passage, a first cylinder is fixed at one end of the first sliding passage, and the other end passes through the heating furnace. The length directionof a piston rod of the first cylinder is consistent with the length direction of the first sliding passage, the second sliding passage is perpendicular to the first sliding passage and is inclined, the lower end of the second sliding passage is connected with one side of the first sliding passage, and the joint is positioned in a movable range of the tail end of the piston rod of the first cylinder. Compared with the prior art, the forging device can automatically heat a workpiece and transfer the workpiece into the forging press, which reduces operators' working intensity, and avoids the high temperature operation of the operators, thereby ensuring the health of the operators.

The high-precision drilling machine comprises a bottom plate, a driving part is fixedly connected to the rear portion of the upper end of the bottom plate, a cooling device and two drilling devices penetrate through the front portion of the driving part, an executing part is fixedly installed at the upper end of the bottom plate, and a second sliding groove is formed in the middle of the upper end of the bottom plate; a first air cylinder is fixedly mounted on the left portion of the upper end of the bottom plate, a first push rod is fixedly mounted at the output end of the first air cylinder, a mounting part is fixedly connected to the right end of the first push rod, two machining tables are fixedly mounted in the middle of the mounting part, and a numerical control table is fixedly mounted on the rear portion of the upper end of the bottom plate. According to the high-precision drilling machine for workpiece machining, drilling machining of different depths can be achieved, and the drilling depth is accurate; different hole diameters and different types of workpieces can be machined, and the application range of the drilling machine is widened; the cooling device can avoid high-temperature operation of the drill bit; in addition, the drilling machine is fixed through the negative pressure effect, and fixing operation is more convenient.

The invention relates to a bridge crane diving platform structure and a mounting process thereof. The bridge crane diving platform structure comprises a first assembly, a second assembly and a third assembly which are assembled in sequence from the front to the back. The mounting process of the first assembly comprises the step that when a left side door frame and a right side door frame are assembled, the first assembly is mounted to the right position. A mounting process of the third assembly comprises the steps that when a front girder is lifted to an eight-meter jig frame, a diving platform truss is located and mounted with the center line of a landside upper cross beam as the baseline; and the height of the third assembly is adjusted, and it is guaranteed that a cab is level with the third assembly. A mounting process of the second assembly comprises the steps that after the door frames, the front girder and a rear girder are assembled, the second assembly is preassembled; then the first assembly, the second assembly and the third assembly are bound with coir ropes; diving platform lower support bolts are loosened; the height of the first assembly is adjusted so that the first assembly can be aligned with the third assembly; and then the second assembly is connected to the first assembly and the third assembly properly. The bridge crane diving platform structure and the mounting process thereof have the beneficial effects that an improved diving platform is simple in structure and convenient to mount; fire work is effectively avoided; and the second assembly which is finally mounted is small, and large-size hoisting equipment such as vehicles is not needed to be used when bolts are screwed, so that equipment cost is saved.