SU1326403A1 - Apparatus for thermal cutting of pipes - Google Patents

Abstract

The invention relates to mechanical engineering, namely to TpV6 thermal cutting devices, and can be used in the blank production to measure pipe cutting for mechanization and improvement of working conditions. The purpose of the invention is to improve working conditions due to more complete removal of combustion products. The device for thermal cutting of pipes is a protective chamber containing means for longitudinal movement of the workpiece, equipped with a ventilation system and loading and unloading windows, a plasma cutter, unloading means which is provided with means for supporting and moving the cut off part of the pipe of the protective chamber. The unloading means in the form of a cart with a lodgment has the ability to move along the chamber and stop at two extreme positions opposite the loading window and the unloading window, the latter being equipped with a hinged door kinematically connected with the unloading means. 5 il. (L with tc O) 4i

Description

The invention relates to mechanical engineering, namely, to devices for thermal cutting of pipes and can be used in the blanking industry for measuring the cutting of pipes for mechanization and improvement of working conditions.

The purpose of the invention is to improve working conditions due to more complete removal of combustion products.

1 shows a device for thermal cutting, a general view; figure 2 - section aa in figure 1; in fig. 3 is a section BB in FIG. 1V in Fig. 4 — the mutual position of the tractor and the carriage in the extreme position before unloading;

figure 5 is a view In figure 4.

A device for thermally cutting pipes contains a protective chamber 1, which is made around the cutting zone and the cut part of the pipe. A damper 3 is placed on the end wall 2 of chamber 1, allowing the pipe to pass through the chamber, and on the opposite end wall 4 there is a duct 5 with workshop ventilation c1 kugema. On the side surface 6 of the protective chamber 1 is present. pins, on to the Chchrykh is mounted. hinged door 7, which provides unloading of the protective tube 1 of the cut pipe to the receiving tray 8. The hinged door 7 is connected via a cable 9 with a spring-loaded pull rod 10 located inside the safety chamber. Inside the protective chamber there is also a movable carriage 11c with a cutter 12 and a means for supporting and moving the cut part of the pipe, made in the form of a driving carriage 13.

In the upper part of the trolley 13 there are inclined beams 14 having a slope in the direction of issuing the cut part of the pipe, and a frame 15 pivotally attached to the axis 16. Under the action of the power cylinder 17, the frame 15 tilts in the direction of issuing the cut part of the pipe. To support the pipe as it rotates during cutting, a cradle is mounted on the frame 15 in the form of roller supports 18, which are located between the inclined beams 14.

On the cart 13 is also installed with the possibility of lifting from the power cylinders 19 a lodgement in the form of roller supports 20 supporting the pipe when it is moved into the protective chamber 1.

On the frame 15, the finger 21 is cantilevered, which, when moved

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five

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carriage .13 in the extreme position when unloading interacts with ten 10.

For rotation of the pipe during the cutting process, there is a device 22 for its rotation, and for supplying the pipe to the cutting zone, a device 23 for longitudinal movement located outside the protective chamber 1,

The device works as follows.

The pipe 24 by the longitudinal movement device 23 is fed through the flap 3 into the protective chamber 1 and is placed on the extended roller carriages 20 of the supporting lodgement of the carriage 13 and is supported by them with further movement. After moving the pipe 24 to the required distance inside the e-camera, the roller supports 20 are lowered by the action of the cylinders 19 and the pipe 24 rests on the roller supports 18 of the supporting lodgement of the trolley 13j ensuring its rotation during the cutting process.

 The rotation device 22 is turned on and the air duct of the ventilation system opens.

In the process of cutting through the duct 5, the combustion products formed during the cutting process, both inside the protective chamber and inside the pipe, are collected and withdrawn. Continuous directional movement of air through the pipe being cut to the duct 5, which is taken in through the open end of the pipe located outside protective chamber-in the shop, - eliminates discharging - the growth of harmful products of combustion in the shop.

At the end of the cut, the cutter 12 is retracted and the carriage 13 moves the cut part of the pipe from the zone of the river to the place of discharge. At the same time, the speed of movement of the trolley is 1.5–2 times higher than the speed of the longitudinal feed of the pipe, specified by the device 23 of the longitudinal movement. During the movement of the trolley 13, the harmful products of combustion which remain inside the cut piece of pipe continue to be sucked out, while at the same time a pipe for the next cut begins to flow into the cavity of the protective chamber 1.

When the cart moves and reaches the extreme position corresponding to the unloading position, the finger 21, which is cantilever located on the frame 15, interacts with the tensioned thrust 10. At the same time

the cart 13 to the end switch (not shown), after which it stops. A cylinder 17 is turned on, which turns the frame 15 about the axis 16. At the same time, the end of the frame 15, which faces the discharge side of the cut pipe section, is lowered toward the hinged door 7. Together with the frame, the finger 21 is lowered, which pushes down on the th 10, lowers it.

At the same time, the t ha of 10, due to the tension of the cable 9 attached to it, turns the hinged door 7, thereby opening the unloading window.

When the frame 15 is tilted, the rollers 18 are lowered with one side below the inclined beams 14 and the pipe rolls under its own weight along the inclined beams 14. into the receiving tray 8.

The frame 15, having lowered to the lower position, includes a microswitch (not shown), which gives the command to turn on the power cylinder 17 and the mechanism for moving the carriage 13.

The power cylinder 17 lifts the frame 15. At the same time, the spring-loaded ton of ha 10 returns to its original position and the hinged door 7 lowers under its own weight, closing the window of the door.

At the same time, the carriage 13 moves to its extreme position, soQ

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about

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corresponding to the loading position, and the cylinders 1-9 extend the roller supports 20 to receive the pipe entering the protective chamber.

Then the cycle repeats.

Formula of invention

A device for thermal cutting of tubes, comprising means for longitudinal movement of the workpiece and provided with a ventilation system and loading and unloading windows, a protective chamber in which the cutter and the means for unloading are located, so that in order to improve working conditions due to more complete removal of combustion products, it is equipped with means for supporting and moving the cut part of the pipe, located in a protective chamber and made in the form of a trolley with a cradle mounted for movement the camera and the stop are in two extreme positions opposite the loading window and the unloading window, the unloading means being in the form of a receiving tray equipped with a mechanism for moving it, and the dispensing window is located on the side wall of the protective chamber and equipped with a folding door kinematically connected with the means unloading.

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Editor N.Shvyschka

Compose; spruce A; Kolomeytsev Tehred L, Serdyukov a

Order 3228/10 Circulation. 974Subscribe

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5

Production and printing company, Uzhgorod, Projecto st., 4

FIG. five

Black Corrector

Claims (1)

Claim A device for thermal cutting of pipes containing means for longitudinal movement of the workpiece and equipped with a ventilation system and loading and unloading windows, a protective chamber in which the cutter and means for unloading are located, characterized in that, in order to improve working conditions due to a more complete removal of combustion products , it is equipped with means for supporting and moving the cut-off part of the pipe, located in the protective chamber and made in the form of a trolley with a tool tray, mounted for movement along the kame s and stops at two extreme positions - opposite the window loading and unloading of the window, wherein the discharge means is a receiving tray provided with a mechanism for moving it, and dispensing box disposed on the side wall of the glove box and is provided with a hinged door, a mechanism kinematically coupled with the discharge means. Aa FIG. 2 Figure 4 view