CN215356880U - Tool for welding and preheating small-cylinder-diameter jack cylinder - Google Patents

Abstract

The utility model discloses a tool for welding and preheating a small-cylinder-diameter jack cylinder, which comprises a welding and preheating pipe arranged on a support assembly, wherein the front end of the welding and preheating pipe is connected with a plurality of preheating nozzles, and the rear end of the welding and preheating pipe is connected with an oxygen interface and a propane gas interface. The front end of the welding preheating pipe is connected with an arc-shaped pipe, and a plurality of preheating nozzles are uniformly arranged and connected on the arc-shaped pipe. The back end of the welding preheating pipe is provided with a backfire preventer. The preheating nozzle and the preheating pipe are of copper pipe type structures. The bracket component is including fixing the pole setting on the base, and the cover has the regulation pole in the pole setting, is equipped with locking screw between regulation pole and the pole setting, and the welding preheater tube is fixed through solid fixed ring on the regulation pole. The welding preheating of the jack with the small cylinder diameter (the cylinder diameter is less than or equal to 230mm) can be realized, the preheating process is simple and convenient to operate, the preheating coverage meets the welding preheating requirement, the safety meets the relevant safety production requirement, the production efficiency is improved, and the welding quality is ensured.

Description

Tool for welding and preheating small-cylinder-diameter jack cylinder

Technical Field

The utility model relates to a tool for a hydraulic support jack for a coal mine, in particular to a tool for welding and preheating a cylinder body of a jack with a small cylinder diameter.

Background

The jack in the hydraulic support mainly plays a bearing role, the integral action of the support is controlled through the stroke, the requirement on the reliability of a product is high, the requirement on the welding of a cylinder body of the jack is particularly critical, particularly the welding of a cylinder bottom in the cylinder body and a main welding bead of the cylinder barrel is high, the requirement on the plasticity is high, and the impact temperature reaches-20 ℃. Therefore, the preheating of the main welding bead is particularly critical.

Preheating before welding:

preheating can reduce the cooling speed of a welding joint, is beneficial to the escape of diffused hydrogen in weld metal and can avoid hydrogen-induced cracks; the preheating can prolong the cooling time of the T8/5 temperature interval of the heat affected zone, improve the metallographic transformation process, avoid hardening the structure and improve the crack resistance of the welded joint; preheating can reduce welding stress. Preheating can reduce the temperature difference between the welding area and the whole temperature of the weldment, reduce the welding strain rate, reduce the welding stress and be beneficial to avoiding welding cracks.

The prior art is as follows:

the whole preheating furnace has good preheating effect, is suitable for large structural parts, but has high energy consumption no matter heating through an electric furnace or natural gas, and needs to occupy larger space to place the preheating furnace.

The ceramic chip or the medium-frequency inductive heating band is suitable for heating a pure cylinder barrel, various heating bands are required to be arranged for matching according to different cylinder diameters, heating power supply equipment is complex, and one-time investment and later maintenance cost are high.

The heating of the baking gun is generally a single heating torch, the heating range is small, and the circumferential direction heating of the cylinder body cannot be carried out.

In view of the above, the present invention is particularly proposed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a tool for welding and preheating a small-cylinder-diameter jack cylinder, which aims to solve the technical problems in the prior art.

The purpose of the utility model is realized by the following technical scheme:

the tool for welding and preheating the cylinder body of the small-cylinder-diameter jack comprises a welding preheating pipe arranged on a support assembly, wherein the front end of the welding preheating pipe is connected with a plurality of preheating nozzles, and the rear end of the welding preheating pipe is connected with an oxygen interface and a propane interface.

Compared with the prior art, the tool for welding and preheating the cylinder body of the small-cylinder-diameter jack can realize the welding and preheating of the small-cylinder-diameter jack (the cylinder diameter is less than or equal to 230mm), the preheating process is simple and convenient to operate, the preheating coverage range meets the welding and preheating requirements, the safety meets the related safety production requirements, the production efficiency is improved, and the welding quality is ensured.

Drawings

Fig. 1 provides a schematic view of a tool for welding and preheating a cylinder body of a small-diameter jack according to an embodiment of the utility model.

In the figure:

1. preheating nozzle, 2, arc-shaped pipe, 3, welding preheating pipe, 4, propane gas interface, 5, oxygen interface, 6, upright rod, 7, base, 8, adjusting rod, 9, locking screw, 10, backfire preventer, 11, fixing ring

Detailed Description

The technical scheme in the embodiment of the utility model is clearly and completely described below by combining the attached drawings in the embodiment of the utility model; it is to be understood that the described embodiments are merely exemplary of the utility model, and are not intended to limit the utility model to the particular forms disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.

The terms that may be used herein are first described as follows:

the term "and/or" means that either or both can be achieved, for example, X and/or Y means that both cases include "X" or "Y" as well as three cases including "X and Y".

The terms "comprising," "including," "containing," "having," or other similar terms of meaning should be construed as non-exclusive inclusions. For example: including a feature (e.g., material, component, ingredient, carrier, formulation, material, dimension, part, component, mechanism, device, process, procedure, method, reaction condition, processing condition, parameter, algorithm, signal, data, product, or article of manufacture), is to be construed as including not only the particular feature explicitly listed but also other features not explicitly listed as such which are known in the art.

The term "consisting of … …" is meant to exclude any technical feature elements not explicitly listed. If used in a claim, the term shall render the claim closed except for the inclusion of the technical features that are expressly listed except for the conventional impurities associated therewith. If the term occurs in only one clause of the claims, it is defined only to the elements explicitly recited in that clause, and elements recited in other clauses are not excluded from the overall claims.

The term "parts by mass" is intended to indicate a mass ratio relationship between a plurality of components, for example: if X component is X parts by mass and Y component is Y parts by mass, the mass ratio of the X component to the Y component is X: Y; 1 part by mass may represent any mass, for example: 1 part by mass may be expressed as 1kg or 3.1415926 kg. The sum of the parts by mass of all the components is not necessarily 100 parts, and may be more than 100 parts, less than 100 parts, or equal to 100 parts. Parts, ratios and percentages described herein are by mass unless otherwise indicated.

Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured," etc., are to be construed broadly, as for example: can be fixedly connected, can also be detachably connected or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms herein can be understood by those of ordinary skill in the art as appropriate.

When concentrations, temperatures, pressures, dimensions, or other parameters are expressed as ranges of values, the ranges are to be understood as specifically disclosing all ranges formed from any pair of upper, lower, and preferred values within the range, regardless of whether ranges are explicitly recited; for example, if a numerical range of "2 ~ 8" is recited, then the numerical range should be interpreted to include ranges of "2 ~ 7", "2 ~ 6", "5 ~ 7", "3 ~ 4 and 6 ~ 7", "3 ~ 5 and 7", "2 and 5 ~ 7", and the like. Unless otherwise indicated, the numerical ranges recited herein include both the endpoints thereof and all integers and fractions within the numerical range.

The terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship that is indicated based on the orientation or positional relationship shown in the drawings for ease of description and simplicity of description only, and are not intended to imply or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting herein.

Details which are not described in detail in the embodiments of the utility model belong to the prior art which is known to the person skilled in the art. Those not specifically mentioned in the examples of the present invention were carried out according to the conventional conditions in the art or conditions suggested by the manufacturer. The reagents or instruments used in the examples of the present invention are not specified by manufacturers, and are all conventional products available by commercial purchase.

As shown in figure 1, the tool for welding and preheating the cylinder body of the small-cylinder-diameter jack comprises a welding preheating pipe arranged on a support assembly, wherein the front end of the welding preheating pipe is connected with a plurality of preheating nozzles, and the rear end of the welding preheating pipe is connected with an oxygen interface and a propane interface.

The front end of the welding preheating pipe is connected with an arc-shaped pipe, and the preheating nozzles are uniformly arranged and connected on the arc-shaped pipe.

And a back fire preventer is arranged at the rear end of the welding preheating pipe.

The preheating nozzle and the preheating pipe are of copper pipe type structures.

The bracket component is including fixing the pole setting on the base, the cover has the regulation pole in the pole setting, be equipped with locking screw between regulation pole and the pole setting, the welding preheating tube passes through solid fixed ring to be fixed adjust on the pole.

In order to more clearly show the technical solutions and the technical effects provided by the present invention, the following detailed description is provided for the embodiments of the present invention with specific embodiments.

Example 1

As shown in figure 1, aiming at the quick preheating of a hydraulic support small-cylinder-diameter jack, by designing a nail-rake type semicircular preheating nozzle which comprises a welding preheating pipe, a preheating nozzle, an oxygen interface and a propane gas interface, the nozzle is arranged at one end of the welding preheating pipe, the oxygen interface and a liquefied gas interface are arranged at the other end of the welding preheating pipe, the full preheating before welding is ensured, various jacks with cylinder diameters less than or equal to 230 can be covered, the operation is simple and convenient, a backfire preventer is arranged, and the safety is high. During heating, oxygen and propane gas enter the welding preheating pipe from a connector at one end of the pipe respectively, and then are sprayed out from the nozzle to burn, so that the aim of preheating the welding is fulfilled.

Welding and preheating the cylinder diameter range: φ 100, φ 125, φ 140, φ 160, φ 180, φ 200, φ 220, φ 230.

By the method, the welding preheating of the jack with the small cylinder diameter (the cylinder diameter is less than or equal to 230mm) can be realized, the preheating process is simple and convenient to operate, the preheating coverage range meets the welding preheating requirement, the safety meets the related safety production requirement, the production efficiency is improved, and the welding quality is ensured.

The concrete technical key points are as follows:

the process is innovative, the novel preheating nozzle is convenient for field operation, and the safety is high due to the arrangement of the backfire preventer.

The preheating nozzle and the preheating pipe are of copper pipe type structures, arcs can be freely fixed according to the size of the cylinder diameter, preheating is sufficient, and covering performance is high.

The tool machining process comprises the following steps:

blanking, assembling, welding, polishing and assembling.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

Claims (5)

1. The utility model provides a frock that is used for little cylinder diameter jack cylinder body welding to preheat which characterized in that, is including installing the welding preheating tube on the bracket component, the front end of welding preheating tube is connected with a plurality of preheating nozzles, and the rear end is connected with oxygen interface and propane gas interface.

2. The tooling for welding and preheating the small-cylinder-diameter jack cylinder body according to claim 1, wherein an arc-shaped pipe is connected to the front end of the welding and preheating pipe, and the preheating nozzles are uniformly arranged and connected to the arc-shaped pipe.

3. The tooling for small-bore jack cylinder welding preheating of claim 2, wherein the rear end of the welding preheating pipe is provided with a flashback arrestor.

4. The tooling for small-bore jack cylinder welding preheating according to claim 3, wherein the preheating nozzle and the preheating pipe are of copper pipe type structure.

5. The tool for welding and preheating the small-cylinder-diameter jack cylinder body according to any one of claims 1 to 4, wherein the support assembly comprises a vertical rod fixed on the base, an adjusting rod is sleeved on the vertical rod, a locking screw is arranged between the adjusting rod and the vertical rod, and the welding and preheating pipe is fixed on the adjusting rod through a fixing ring.

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