34results about How to "Guaranteed not to deviate from" patented technology

A bend pipe forging die with a springing device comprises a fixed die body and a movable die body, wherein the movable die body is arranged below the fixed die body; a convex die body is arranged on a forging surface of the fixed die body; a concave die body which is matched with the convex die body is arranged on a forging surface of the movable die body; the convex die body is matched with the concave die body to form a forging cavity of which the shape is matched with that of a bend pipe; the springing device is arranged in the movable die body; a downward blind hole is formed in the forging surface of the movable die body; the springing device comprises a first spring arranged at the bottom of the blind hole and a pressure lever arranged on the first spring; the upper end of the pressure lever extends out of the blind hole; the upper part of the pressure lever is a wedge-shaped surface; a through hole is formed in a position, which corresponds to the forging cavity, of the wedge-shaped surface; a push rod which is matched with the wedge-shaped surface of the pressure lever is arranged in the through hole; and a resetting spring is arranged on the push rod. The springing device is arranged in the movable die body, so that a finished bend pipe can be unloaded from the die when stripped from the die; the labor intensity of workers is reduced; and the forging efficiency of the bend pipe is improved remarkably.

The invention relates to pressure meter assembling equipment. A pressure meter is conveyed below a mounting mechanism by a feeding mechanism; a clamping lifting cylinder of the mounting mechanism drives a lifting connection plate to move up and down on a lifting slide rail, a cam is driven to lift, the cam is descended to drive a meter clamping lever to clamp the pressure meter, the cam is ascended to drive the meter clamping lever to loosen the pressure meter, firstly, the meter clamping lever is loosened, a lifting mechanism drives the mounting mechanism to move downwards to clamp the pressure meter, the feeding mechanism returns back to the initial position, then a rotary mechanism is moved to drive a pressure meter seat to move to a place below the mounting mechanism, a compressing mechanism clamps the pressure meter seat, the mounting mechanism is driven by the lifting mechanism to move downwards, and when the pressure meter reaches a place above the pressure meter seat, the mounting mechanism is driven to drive a rotary spindle to rotate, so the pressure meter is rotated and descended to be screwed into the meter seat, and when the torsion achieves a certain value range, the pressure meter stops rotating. The assembly of the pressure meter is full-automatically performed, the labor intensity of operation staff is reduced, and the production cost is reduced.

The invention discloses a method for installing a large-volume steel frame flue. The ground installation of the steel frame and the flue includes the following steps: S1: first prepare the steel frame foundation, and then lay wires on the steel frame foundation, Marking the installation position of the flue, and setting the wall plate, the bottom plate and the top plate at the installation position of the flue; S2 marking the installation position of the steel frame column at the wall plate; S3 Open at the installation position of the steel frame column, hang the steel frame column into the opening; S4 set the steel frame body on the steel frame foundation; also include the following steps: S5 install and flip Jack; S6 lifts the inverted roof to complete a lifting stroke of the inverted pull rod; S7 lifts the inverted roof after the lifting stroke of the inverted pull rod is completed, and repeats from step S5 to complete the entire large section The installation of the flue. The beneficial technical effect of the present invention is reflected in: safe construction, short construction period, less requirements on the site, and no need to use large-scale hoisting equipment.

The invention relates to a welder, in particular to an automatic butt welder, which is applicable to welding between cylinders with different diameters and tube plates. The automatic butt welder comprises a straight shank empty cold welding torch, an elevating gear and a transversal arm fixed on the elevating gear, wherein the straight shank empty cold welding torch is fixed on the transversal arm. The automatic butt welder is characterized in that the transversal arm is formed from a front arm and a rear arm connected by a coupling, springs are fixed on the front arm and the rear arm, a sleeve with adjustable height is arranged on the front arm, a transversal sliding shaft is arranged on the lower part of the sleeve, a roller is arranged on the top end of the transversal sliding shaft, a longitudinal telescopic rod is arranged on the front arm, a curved rod is arranged on the top end of the telescopic rod, and rollers are arranged on both ends of the curved rod. The automatic butt welder has a unique mechanical limit structure of the front arm and the rear arm, solves the problem that the head of a welder is regulated continuously during welding because a cylinder rotating on a rotator deviates longitudinally, and ensures no deviation from welds during welding.

The invention discloses a process for modifying an optical fiber preform, comprising the steps of 1) using a quartz rod cutter to cut a rod preform to obtain a primary quartz rod; 2) secondarily processing the primary quartz rod in a secondary former to obtain a secondary quartz rod; 3) embedding a conductive material in the secondary quartz rod, and sealing with a sealing machine to obtain the optical fiber preform. Special cutting equipment is used herein, zero offset from the axis can be ensured during cutting of a quartz rod, a variable-frequency speed-adjusting motor is arranged in a motor box, speed adjusting is facilitated, and resource and energy can be saved. Special secondary forming equipment is provided, and manual and electric feeding can be achieved; special sealing equipment is also used, non-uniform local distribution of film is avoided, and the preform is more attractive.