Semi-automatic line for plasma surface hardening of wheelsets of rail transport

 

(57) Abstract:

The invention relates to the field of engineering, in particular to semi-automatic lines for plasma surface hardening of tires and wheel rims, and can be used in the design and manufacture of equipment for repair of railway transport enterprises, equipped with machine tools for machining wheel without removing the wheel pair. Semi-automatic line made in the form of stand, equipped with a stacker for stacking a pair of wheels on the conveyor crossing stand, plasma torch with a nozzle and a mechanism of rotation of the wheel pair containing the drive roller, which mate with the profile of skating wheels forms a friction couple. The stand is equipped with three restrictive rollers placed in the plane of the drive roller, and two gland rollers formed with a drive and restrictive rollers triangular prism. Between the driving and limiting rollers on the stand fixed modules with the plasma torch with a nozzle connected to the gas and air for operation of the plasmatron. The modules are equipped with thrust rollers, they rely on the flange of the wheel is AZAL, after completion of the warranty practices prevail damage in the form of wear ridges and fishermen. Development of semi-automatic line for plasma surface hardening perechodnik wheelset provides improved contact fatigue strength of the metal and, as a consequence, the resources wheelset. This work on the semi-line allows you to minimize the amount of manual work and to exclude equipment changeover. 2 C.p f-crystals, 7 Il.

The invention relates to the field of engineering, in particular to semi-automatic lines for plasma surface hardening of tires and wheel rims, and can be used in the design and manufacture of equipment for repair of railway transport enterprises, equipped with machine tools for machining of wheels without removing them from Kolar.

The famous "Machine for hardening shaft, patent RU 2081183, 10.06.97, IPC C 21 D 1/10, 9/28 related to the field of induction heating products. It contains a number of mechanisms for loading workpieces, consistently moving, single-piece feed into the working area, the inductor-sprayer, the cooling mechanism zagotovitelno heat treatment peretochennym wheels without removing them from the wheel pair is not possible, and removing the wheels to make impractical because the heat treatment is subject only to the wheelset, and not the entire wheelset.

The technical result to be obtained by the use of the invention is to improve the technology of plasma surface hardening of wheelsets through automation /mechanization/ loading, installation, heat treatment and unloading of wheel pairs, which greatly reduces the volume of work and injuries.

Developed semi-automatic line for plasma surface hardening of wheelsets of rail transport method for heating profiles skating wheels plasma jet is directed towards a rotating wheel surface, includes stand, rigidly secured on the rails and rods on which modules are installed with torches and nozzles, with the possibility of axial movement thereon, equipped with thrust rollers, ensuring the Ref module and a constant gap between the plasma torch and the profile skating wheels of different sizes with a given angle to the corners of the intersection of the flanges of the wheels with a profile of their ski placed on the mechanism of rotation of the wheelset relative to the bounding roller, located in one plane with the drive roller, two movable roller forming with a drive and restrictive rollers isosceles triangular prism, the rollers of which are associated with the surfaces of the profiles skating wheels, and the modules with torches and nozzles are located between the drive pulley and restrictive rollers along the axis of the gland rollers.

The line contains a heat and sound insulating chamber made through a sealed door openings for feeding and discharging a pair of wheels placed in the camera modules with torches and nozzles, rollers associated with skating surfaces of the pair of wheels, a conveyor with loading and unloading platforms and installed before the courts layers with pneumatic drives, made in the form of rotary levers.

The conveyor inside the camera equipment retractable stop, providing installation of a pair of wheels under the torches.

The invention is illustrated by drawings, where Fig. 1 shows a General view of the semi-line; Fig. 2 - General view /plan/ semi-automatic lines; Fig. 3 - installation of the pair of wheels on the conveyor until it stops; Fig. 4 - preload wheel pair; Fig. 5 - is the of plasmotron with the nozzle relative to the wheel.

Semi-automatic line for plasma surface hardening of wheelsets of rail transport in the form of stand 1 /Fig. 1/, which is fixed to the conveyor 2, is equipped with rollers 3 for driving the pair of wheels 4. For lifting the pair of wheels 4 on the conveyor 2 stand 1 is equipped with a stacker 5, made in the form of a pivoted lever coupled with a pneumatic drive.

The stand 1 is equipped with a retractable stop 6 for mounting a pair of wheels 4 under the driving roller 7 and restrictive rollers 8, between which on each wheel fixed module 9 with a plasma torch and a nozzle connected to the gas and air to the plasma torch operation.

Under a pair of wheels 4 on the stand 1 is fixed gland rollers 10, United lever mechanism 11 with a pneumatic drive. On the stand 1 is rigidly fixed heat and sound insulating chamber 12, is equipped with pass-through door openings 13, which are closed when the mechanism of the door opening 14.

In addition to layers 5 and end sites of the conveyor 2 all equipment is placed inside a heat and sound insulating chamber 12, equipped with Windows for visual observation of the process of plasma surface hardening of Krasnoye pair 4 are fed to the stand 1, and removed with him to the railroad 15, laid on the ground along with the rails 16. The operator's seat 17 at the control panel 18 is equipped with a fence 19 is on the left side of the stand 1, which removed all traces of traffic systems and process control of plasma surface simplification of the pair of wheels.

The work of the semi-line is as follows.

A pair of wheels 4 /Fig. 3/ posted on railroad 15 in front of the stand 1, using the stacker 5 is mounted on the platform conveyor 2 before heat and sound insulating chamber 12, which by means of the mechanism of opening of the door 14 opens the door to a pair of wheels 4. Then turn on mechanism of retractable stops 6 to install it in a working position. The inclusion of the conveyor 2 pair of wheels 4 is fed into the chamber until it stops 6, after which the door is closed, ensuring the tightness of the camera 12. The lever mechanism 11 through the two movable roller 10 pair of wheels 4 tightened all the way into the drive roller 7 and the three bounding rollers 8 /Fig. 4/.

Each plasma torch with a nozzle placed in each module 9, its thrust roller 20 /Fig. 7/ based on the flange of the wheel, tightened by a spring 21 to it. Due deravasi 23, on the other hand in which they strengthened thrust roller 20, is provided by the axial displacement of the module 9 with a plasma torch and a nozzle, and a certain gap from the nozzle of the plasma torch to the profiles skating wheels wheelset 4 different diameters of wheels.

The rollers 7, 8, 10 are based on the square profile skating wheels /Fig. 5, 6/. Thus the rotation of the pair of wheels 4 in a predetermined mode by the driving roller 7, creating with the rolling surface of one of the wheels of the friction couple.

The process parameters of the heating surfaces skating wheels depend on speed of rotation of Alpari providing relative displacement of 1.5 m/s, mass-average temperature of the plasma jet - 6000 K and coefficient of excess oxidant in a plasma-forming mixture of 0.9. The parameters defined process for each type of wheel pair 4, it is thus considered that the quenching is carried out in air and due to the body temperature of the pair of wheels 4.

Analysis of damage to the wheelset, in particular surfaces skating wheels, showed that after completion of the warranty practices prevail damage in the form of wear ridges and fishermen.

Development of semi-automatic line for plasma poutala and as a consequence, the resources wheelset.

This work on the semi-line allows you to minimize the amount of manual work and to exclude equipment changeover.

1. Semi-automatic line for plasma surface hardening of wheelsets of rail transport, characterized in that the line has a stand rigidly secured on the rails and rods on which modules are installed with torches and nozzles, with the possibility of axial movement thereon, equipped with thrust rollers, ensuring the Ref module and a constant gap between the plasma torch and the profile skating wheels of different sizes with a given angle to the corners of the intersection of the flanges of the wheels with their profiles Catania, placed on the mechanism of rotation of the wheelset relative to the plasma torch having a drive roller, which forms the pair with the profile of skating wheels of the friction pair, three restrictive roller located in the plane of the drive roller, two gland roller forming with a drive and restrictive rollers isosceles triangular prism, the rollers of which are associated with the surfaces of the profiles skating wheels, while Malikov.

2. Semi-automatic line under item 1, characterized in that it contains heat and sound insulating chamber made through a sealed door openings for feeding and discharging a pair of wheels placed in the camera modules with torches and nozzles, rollers associated with skating surfaces of the pair of wheels, a conveyor with loading and unloading platforms and installed before the courts layers with pneumatic drives, made in the form of rotary levers.

3. Semi-automatic line for p. 2, characterized in that the conveyor inside the chamber is equipped with a retractable stop, providing installation of a pair of wheels under the plasma torches.

 

Same patents:
The invention relates to metallurgy, in particular to the technology of solid-rolled railway wheels

The invention relates to metallurgy, and in particular to methods of hardening steel castings and rolled wheels

The invention relates to metallurgy and mechanical engineering, in particular to methods of heat treatment of steel stamped-rolled railway and crane wheels

The invention relates to heat treatment of rolled rings and bands

The invention relates to a thermal processing train bandages and can be used in the manufacture of products such as bodies of rotation from carbon steel

The invention relates to ferrous metallurgy, in particular to the production of railway wheels

The invention relates to mechanical engineering, in particular to equipment for manufacturing a cylindrical billet of the type of bandage

The invention relates to thermal processing of products, in particular wheels

The invention relates to a thermal processing train rolled wheels
The invention relates to a pressure treatment of metals, in particular, to a wheel manufacturing

The invention relates to metallurgy and can be used for the production of hot-rolled strip intended for cold forming, the method comprises hot rolling, accelerated cooling, winding the strip into a roll, the cooling roll, the roll unwinding and cutting it to length and normalization, which is carried out in two stages, first at a temperature ANDC3+ 30-50oC, the second in the interval between the critical points ANDC1and aC3
The invention relates to the processing of metals by pressure, in particular to a method of heating billets highly reactive refractory metals and alloys, for example titanium, under the hot plastic deformation

The invention relates to the field of engineering, namely, the heat treatment of machine parts, and can be used in the engine to improve performance of turbocharged diesel engines

The invention relates to the field of engineering, namely, the heat treatment of machine parts, and can be used in the engine to improve performance of turbocharged diesel engines

The invention relates to the field of metallurgy and engineering

The invention relates to the field of metallurgy and engineering

The invention relates to the field of metallurgy, namely, heat treatment of steels in the manufacture of tools and machine parts in mechanical engineering

The invention relates to a device for continuously consistent surface hardening with induction heating, in particular, to the design of the inductor for heating an inner contoured surfaces, such as sidewalls of the trough coal conveyors

The invention relates to a device for continuously consistent surface hardening with induction heating, in particular, to the design of the inductor for heating an inner contoured surfaces, such as sidewalls of the trough coal conveyors

The invention relates to heat treatment of metals and can be used for hardening tool of unalloyed cast iron structure ledeburite

FIELD: rolling-mill machinery.

SUBSTANCE: the invention presents an installation for rolled metal cooling and is dealt with metal rolling, in particular with cooling of rolled metal. The installation for rolled metal cooling contains a body with an inlet branch-pipe and two rows of outlet branch-pipes displaced from each other by a half step. Value of a step of the outlet branch pipes in each row does not exceed four internal diameters of the branch-pipes. Across the body opposite to an entry of the inlet branch-pipe a dissector is installed. Along the body opposite to the outlet branch-pipes there are two entire central plates and two fragmentary lateral plates forming two longitudinal funnel-shaped cavities, turned by their narrow parts to each row of outlet branch-pipes. Fragmentariness of the lateral plates is created at the expense at least of one cutout in the base of each plate, at the longitudinal butts of which there are two perpendicularly fixed damping plates facing inside the funnel-shaped cavities. The invention allows to increase evenness, flexibility and efficiency of the rolling metal cooling process and ensures reliable operation of the installation.

EFFECT: the invention allows to increase evenness, flexibility and efficiency of the rolling metal cooling process and ensures reliable operation of the installation.

4 silt

Up!