31results about How to "Tension is easy to control" patented technology

The invention discloses a method for manufacturing steel wires for springs with excellent stability and stress resistance, comprising the following steps: raw material selection: selecting high-carbon steel hot-rolled high-quality wire rods for production; Scale treatment, and use a pre-drawing machine to draw it to the diameter of the pre-drawn semi-finished steel wire required by the process design through a tungsten steel wire drawing die, and then perform preliminary drawing treatment; continuous heat treatment of the semi-finished steel wire: heat the pre-drawn semi-finished steel wire The furnace is subjected to lead bath quenching treatment, and the tensile strength of the semi-finished steel wire after heat treatment is 880-1100MPa. The invention can make the steel wire have high stability and stress resistance, and it is convenient to control the pulling force and tension of drawing to produce carbon fine spring steel wires of different sizes and standards. Mechanical properties and toughness requirements, but also meet mass production and ensure product quality requirements.

The invention discloses a manufacturing method of a transformer body of an oil immersion type amorphous alloy transformer. The manufacturing method includes the following steps: (1) annealing treatment is carried out on iron cores; (2) the iron cores are pushed to the testing position for testing according to the furnace exiting sequence; (3) coils for forming the transformer body of the transformer draw close; (4) iron core jackets are drawn off after the iron cores are pushed into the testing position; (5) packing is carried out; (6) binding is carried out, wherein the binding belt tension ranges from 1500 N to 2500 N according to different weights of the transformer body; (7) after an amorphous sheet layer on the outmost face is closed, a shock pad is placed on the outer face of the amorphous sheet layer, a silicon steel sheet hasp on the outer layer is tightened, the hasp part is firmly glued through adhesive tape, and the adhesive tape is used for firm gluing if the hasp is damaged; (8) the coils are cleaned; (9) the lap joint position is coated with glass cement; (10) upper clamp insulation is arranged, and an upper clamp is installed in place. By means of the manufacturing method, stable-performance annealing parameters can be guaranteed, the fixing effect is improved through an elastic insulation binding belt, and the sound insulation effect and the sound absorption effect can be improved.

A stretch force controllable hand operated hydraulic pull tool use as the attachment of machine-tool for applying a stretch force to workpiece is disclosed. It features the combination of mechanical advancing with hydraulic loading.

The invention provides an inflatable film reflector and its assembly tool and assembly method. The film reflector is composed of a clip, a main mirror frame, a main mirror pressure plate, a polyimide film and a sealing ring: the assembly tool includes a connecting Frame, pressing plate, film frame, gland, nylon rope; the assembly method steps of described assembly tooling are as follows: the connection frame is fixed on the main mirror frame; The position of the main mirror pressing plate, pressing plate and film frame is fastened; The two films are tied to the film frame respectively, and the tension of the film is controlled by tightening the nylon rope, and the film is evenly tightened; the film frame is fastened to the gland, and then the gland is fastened to the connecting frame; finally Press the pressing plate, the main mirror pressing plate and the film tightly on the main mirror frame. The invention realizes the effective control of the ideal surface shape of the thin film by using the assembly tool, and improves the surface shape precision of the thin film reflector.

The invention relates to a pushing and drawing force testing machine which is used for testing pushing force or drawing force for electronic equipment. The pushing and drawing force testing machine comprises a supporting device, a pushing and drawing force switching mechanism, a force application device and a rope, wherein the pushing and drawing force switching mechanism is fixed on the supporting device; the force application device is used for controlling the magnitude of output acting force; the rope is connected with the force application device and the pushing and drawing force switching mechanism; the pushing and drawing force switching mechanism comprises an actuating rod and a connecting component, wherein the actuating rod is butted with the electronic equipment or is connected with the electronic equipment through a connecting piece, and the connecting component is connected with the actuating rod and is provided with a first clamping column; and the force application device draws the rope to enable the actuating rod of the pushing and drawing force switching mechanism to push or draw the electronic equipment in a sliding way. The pushing and drawing force testing machine has the advantages of convenient operation and high reliability of test results.

The invention provides a floating type net cage underwater quick detachable binding structure and belongs to the field of net cages. Concretely, a guide rope is arranged outside the net cage; one end of the guide rope is tied to a floating pipe or a net rib on the upper end of the net cage and the other end is tied to a net rib on the bottom end of a mesh; the end part of a mooring cable of a mooring system is provided with a lifting hook sleeved on the guide rope; the bottom end net rib close to the guide rope is tied with a sinker; and a position on the mooring cable and close to the lifting hook is provided with a sinker or a gravity rope knot. When unfixation is required, a user on the water can insert a hook rod into the water to hook the mooring cable, so the mooring cable can be hooked to the water surface; and the net cage can be unfixed.

The invention relates to manufacturing equipment of a floating pipe in the field of pipeline manufacture and particularly relates to floating pipe water-cloth binding equipment which is used for binding water cloth on the surface of a floating pipe. According to an existing manufacturing process of the floating pipe, especially before the vulcanization is carried out, stuck raw rubber needs to be fixed and pressed, water-cloth binding is adopted as a generally-adopted method, a used device is a simple device, tension is controlled by manual operation in binding of the water cloth, since the tension is perceived by hand feeling of workers in manual operation, the error is large, and the thickness error of the vulcanized rubber is large, so that the quality of the floating pipe is seriously influenced. The water-cloth binding equipment overcomes the defects in an existing process, and has the advantages that the continuous mechanical production in the binding of the water cloth can be well realized, the productivity is high, the operation is convenient, the labor intensity of the workers is low, and the tensioning force of the water cloth is controllable, adjustable and perceived.

The invention discloses a chain pre-tensioning device, which comprises a bottom plate, a pre-tensioning oil cylinder, a tension sensor, a movable insertion plate fixing seat, a movable insertion plate oil cylinder, a movable insertion plate, a pre-tensioning runway, a fixed insertion plate, a fixed insertion plate seat, a fixed insertion plate oil cylinder, a pre-tensioning oil cylinder position limiting sleeve, a pre-tensioning material guiding chain wheel and a displacement sensor. The movable insertion plate and the fixed insertion plate are inserted into a chain, and the pre-tensioning oil cylinder is tensioned, so the chain is tensioned, and the chain is enabled to maintain the tensioning state in the use process. Through adopting the mode, the chain pre-tensioning device has the advantages that the reliability performance is high, the positioning is precise, the structure is compact, the stretching effect is good, the tension force is controllable, the finished product quality is stable, the process is simple, the adaptability is good, and wide market prospects are realized in chain transmission manufacturing industry.