31results about How to "Easy welding work" patented technology

The invention provides a rotor core and a method of fastening the rotor core and a rotary shaft. The method of fastening the rotor core having no end plate and composed of laminated steel plates, and the rotary shaft by means of thermal insert can prevent the rotor core from being axially deformed due to the thermal insert load. The rotor core (12) is formed by axially laminating a plurality of circular-ring-shaped steel plates having through holes embedded in the shaft (11). A first groove (12a) and a first projecting bar (12b) are alternately formed on circumferential direction of the rotor core (12) inner peripheral surface where the through holes are formed. The first groove (12a) is recessed towards the outer radial direction and axially extends. The first projecting bar (12b) projects towards the inner radial direction and axially extends. A welding part (12b-1) for combining axially adjacent steel plates together is equipped on the projecting end face of the first projecting bar (12b). The welding part (12b-1) is continuously equipped from one axial end to the other axial end.

A four-way switching valve accommodates a piston valve in a valve casing. The piston valve is formed by first and second pistons (1, 2), a connecting fitting and a valve body (4). The piston (1) is formed by a pad (11), a guide plate (12), a tooth spring (13) and a reinforcing plate (14). The piston (2) is formed by a pad (21), a guide plate (22), a tooth spring (23) and a reinforcing plate (24). The piston (1) is fixed to a vertical plate (31) of the connecting fitting via fixing screws (N1, N2). The piston (2) is fixed to a vertical plate (32) of the connecting fitting via fixing screws (N3, N4). Fusing layers (P1, P2) generated by resistance welding are formed at a position where the fixing screw (N1) is abutted with the guide plate (12) and a position where the fixing screw (N2) is abutted with the guide plate (12). Fusing layers (P3, P4) generated by resistance welding are formed at a position where the fixing screw (N3) is abutted with the guide plate (22) and a position where the fixing screw (N4) is abutted with the guide plate (22).

A refrigerator is provided. The refrigerator may include an evaporator installed inside an evaporator case, a water tray provided below the evaporator and configured to collect water, a grill cover provided at a rear side of the evaporator case and configured to accommodate a blower fan, and a tray support provided in the grill cover to support the water tray so that an inner storage space of therefrigerator may increase, a withdrawal distance of a drawer provided in the refrigerator may increase, and a storage capacity of the refrigerator may be improved.

The purpose of the present invention is to prevent inconsistency in current collection efficiency by integrating current collector terminals using two active material retention sections which retain active materials, to simplify welding operations by reducing the number of current collector terminals, and to simplify the operation of stacking multiple electrode plates. Specifically, the present invention provides a stacked electrode assembly (3) including a positive plate (31), a negative plate (32) and a separator (33). The positive plate (31) is formed substantially in a U-shape such that two active material retention sections (31B) for retaining cathode active materials are arranged opposite each other, and the negative plate (32) is formed substantially in a U-shape such that two active material retention sections (32B) for retaining anode active materials are arranged opposite each other. The positive plate (31) and the negative plate (32) are stacked such that at least one active material retention section (31B) in the positive plate (31) is interposed between the two active material retention sections (32B) in the negative plate (32).

The invention discloses a welding device for petrochemical engineering. The welding device for the petrochemical engineering comprises a base and a limiting device, wherein a working groove is formed in the top of the base, a fixing base and a baffle are arranged at the bottom of an inner cavity of the working groove, a left fixing ring is arranged at the top of the fixing base, a rotating motor is arranged at the top of the base, a rotating shaft is arranged on the right side of the rotating motor through a coupler, a left rotating disc is fixedly connected to the right end of the rotating shaft, a left ball is arranged between the left fixing ring and the left rotating disc, a driving shaft is arranged on the right side of the left rotating disc, an electric telescopic rod is arranged on the right side wall of the working groove, a moving trolley body is arranged on the left side of the electric telescopic rod, a right fixing ring is arranged at the top of the moving trolley body, a right rotating disc is arranged in an inner cavity of the right fixing ring, a right ball is arranged between the right fixing ring and the right rotating disc, and a driven shaft is arranged on the left side wall of the right rotating disc. According to the welding device, a pipeline can be rotated when the pipeline is welded, and the device is very suitable for welding large-diameter pipelines, and effectively reduces the operation intensity of welding personnel.

The invention provides a two-wheeled motorcycle which has reduced amount of parts of a motocycle frame. The two-wheeled motorcycle comprises a head pipe (21), a main frame (25), and a pivot branch frame (35); the head pipe (21) supports and rotates a steering shaft (22); the main frame (25) extends from the head pipe (21) to the back part in the front-and-back direction of the motocycle; the pivot branch frame (35) is connected with the main frame (25), supports and swings a back rocker arm (30). The main frame (25) is a single frame with a round cross section; motocycle seat guide rails (27) form a U shape or a V shape with the opening facing backwards in the front-and-back direction of the motocycle; and the motocycle seat guide rails (27) are contacted and fixedly connected with the back end of the main frame (25).

The invention discloses a roller nail recoil type nail puller for a high-pressure roller mill. The roller nail recoil type nail puller comprises a nail pulling assembly, a nail pulling preparation assembly and a driving assembly, wherein the nail pulling assembly comprises a nail pulling middle pipe, a sleeve arranged outside the nail pulling middle pipe in a sleeving manner, and a nail pulling shaft arranged at the end of the nail pulling middle pipe, and a stop block is arranged at the rear end of the nail pulling middle pipe; the nail pulling preparation assembly comprises a grinding head arranged at the position close to a roller nail ring, spray guns arranged at the position close to a roller nail on the roller nail ring, and gluing pieces arranged at the position close to the spray gun, and the roller nail ring is provided with a position replacement part used for driving the gluing pieces and the spray guns to select positions; and the driving assembly is arranged at the position of the nail pulling assembly.

The invention belongs to the technical field of axle casting, and particularly relates to high-strength automatic casting equipment for a rear axle head. The high-strength automatic casting equipment comprises a cooling bin, wherein a ventilation net is fixedly connected to the side wall of the cooling bin; a speed reduction motor is installed at the bottom of the cooling bin; the output end of the speed reduction motor penetrates through the bottom of the cooling bin and is fixedly connected with a turbofan blade; and the turbofan blade is arranged inside the cooling bin in an inverted U shape. According to the high-strength automatic casting equipment, the rear axle head is placed inside the cooling bin, then airflow inside the cooling bin is guided through the U-shaped turbofan blade, so that the airflow can uniformly flow near the rear axle head, and then all portions of the side wall of the rear axle head can be cooled at a relatively uniform speed.