Flame cutting equipment

Abstract

The flame cutting equipment comprises a rotating roller set, a walking track and a cutting trolley, the rotating roller set comprises a plurality of pairs of rotating rollers capable of rotating and used for being matched with each other to support a steel pipe to be cut, and the walking track directly faces the multiple pairs of rotating rollers; wherein the cutting trolley is arranged on the walking track in the mode that the cutting trolley can be driven to move directionally so that one end of the rotating roller set can be relatively close to or away from the rotating roller set, a cutting torch support is arranged on one side of the cutting trolley in the moving direction, a cutting torch is installed on the upper portion of the cutting torch support, and a cutting nozzle of the cutting torch is close to the other side of the moving direction. A tracking wheel seat and an adjusting mechanism used for driving the tracking wheel seat to be relatively close to or away from the steel pipe to be cut are arranged on the other side of the cutting trolley in the moving direction, and a tracking wheel is installed on the tracking wheel seat through a rotating disc and used for adjusting the rotating direction of the tracking wheel. The flame cutting equipment provided by the utility model can greatly improve the quality of cut crevasses, and is convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of cutting equipment technology, and in particular to flame cutting equipment. Background Technology

[0002] Flame cutting machines are commonly used for cutting metal sheets and pipes, especially for thick steel plates, where they can achieve good cutting results. Flame cutting utilizes a flame generated by the combustion of a mixture of combustible gas and oxygen. The flame preheats the workpiece to a certain temperature, then a high-speed cutting oxygen stream is ejected, causing the metal to oxidize violently and release heat. The cutting oxygen stream then blows away the molten metal oxides, thus achieving the cut.

[0003] In existing technology, after the steel pipe is placed on the rotating roller, axial movement of the steel pipe is prone to occur during the flame cutting process. The amount of movement varies from a few millimeters to a few centimeters. This results in misalignment of the cut edges after cutting. In severe cases, manual grinding is required, which is labor-intensive and inefficient. Even if the misalignment is not serious or after manual grinding, small misalignment may still exist, which will affect the connection between the two steel pipes. Utility Model Content

[0004] This application provides a flame cutting device that can greatly improve the cutting quality of steel pipes when they are flame cut with rotating rollers supporting them. It is easy to use, simple to operate, and low in cost.

[0005] This application provides a flame cutting device, including a rotating roller assembly, a traveling track, and a cutting trolley. The rotating roller assembly includes several pairs of rotatable rollers that cooperate to support the steel pipe to be cut. The traveling track is directly opposite the pairs of rotating rollers. The cutting trolley is arranged on the traveling track in a directional manner, moving towards or away from one end of the rotating roller assembly. The cutting trolley has a torch support on one side of the moving direction, with a torch mounted on its upper part. The nozzle of the torch is located near the other side of the moving direction. The cutting trolley has a tracking wheel seat and an adjustment mechanism on the other side of the moving direction for driving the tracking wheel seat towards or away from the steel pipe to be cut. The tracking wheel seat has a tracking wheel mounted on a rotating disk for adjusting the rotation direction of the tracking wheel.

[0006] In one possible implementation, the rotating roller assembly includes 3-6 pairs of rotating rollers, each pair comprising two rollers with a clearance fit.

[0007] In one possible implementation, the roller shaft of the rotating roller is connected to a rotating motor, and the rotating motor is electrically connected to a potentiometer.

[0008] In one possible implementation, the cutting trolley and the traveling track slide together.

[0009] In one possible implementation, the bottom of the cutting trolley is equipped with wheels, and the surface of the track is provided with guide wheel grooves that cooperate with the wheels.

[0010] In one possible implementation, the tracking wheel seat and the rotating disk are respectively provided with a plurality of positioning grooves, and the plurality of positioning grooves are evenly distributed along the circumference of the rotating disk. Locking screws are installed in the positioning grooves, and the tracking wheel is installed on the side of the rotating disk away from the tracking wheel seat.

[0011] In one possible implementation, the adjustment mechanism includes a rotating frame disposed on the top of the cutting trolley, the top of the rotating frame being hinged to an L-shaped connecting frame, the L-shaped connecting frame being connected to the rotating frame at a corner position, a tracking wheel seat disposed at one end of the L-shaped connecting frame, the other end of the L-shaped connecting frame being connected to a telescopic element, and the tracking wheel seat being close to the torch support.

[0012] In one possible implementation, the telescopic element is a cylinder, which is connected to the L-shaped connecting frame via a piston rod.

[0013] Beneficial effects: Compared with the prior art, the flame cutting equipment provided in this application integrates the cutting torch and the tracking wheel on the cutting carriage. Before cutting, the direction of the tracking wheel is first adjusted to ensure that the trajectory of the tracking wheel can coincide when the steel pipe rotates one revolution, that is, to ensure the perpendicularity of the tracking wheel and the steel pipe. Then, the tracking wheel is pressed tightly against the surface of the steel pipe, and the steel pipe is cut by the cutting torch. Even if the steel pipe moves axially during the process, the cutting carriage will move synchronously through the tracking wheel. This ensures that the relative position of the cutting torch and the steel pipe remains unchanged throughout the cutting process, which can greatly ensure the quality of the steel pipe's cut and avoid large misalignment of the cut.

[0014] These and other objects, features and advantages of this utility model will be fully realized through the following detailed description. Attached Figure Description

[0015] Figure 1 A schematic diagram of the flame cutting device of this application is shown.

[0016] Figure 2 A partial structural schematic diagram of the cutting trolley in this application is shown. Detailed Implementation

[0017] The following description is intended to disclose the present invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the present invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the present invention.

[0018] Those skilled in the art should understand that, in the disclosure of this specification, the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this utility model.

[0019] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number.

[0020] refer to Figure 1 and Figure 2 This application provides a flame cutting device, including a rotating roller group 10, a traveling track 20, and a cutting trolley 30;

[0021] The rotating roller group 10 includes several pairs of rotatable rotating rollers 11 for cooperating with each other to support the steel pipe to be cut. Depending on the length of the steel pipe to be cut, the rotating roller group 10 may include 3-6 pairs of rotating rollers 11 that are sequentially and interlocked. Each pair of rotating rollers includes two interlocked rotating rollers 11, thereby using 3-6 pairs of freely rotatable rotating rollers to support the steel pipe. The rotation of the rotating rollers 11 is controlled by a potentiometer.

[0022] The traveling track 20 is directly opposite several pairs of rotating rollers 11, meaning the extension direction of the traveling track 20 is the same as the extension direction of 3-6 pairs of rotating rollers 11, and it is directly opposite the rotating rollers 11. The cutting carriage 30 is located at one end of the rotating roller group 10 and is positioned on the traveling track 20 in a way that allows it to be driven and directionally moved relatively close to or away from the rotating rollers 11. The cutting carriage 30 has a torch support 31 on one side of the movement direction, with a torch 311 mounted on its upper part, and the cutting nozzle of the torch 311 positioned close to the other side of the movement direction. The function of the torch 311 is to mix oxygen and acetylene in a specific ratio to form a preheating flame, and to inject high-pressure pure oxygen onto the steel pipe being cut, causing the steel pipe to burn in the oxygen jet. The oxygen jet then blows away the molten slag (oxides) generated during combustion, forming a kerf. The cutting trolley 30 is provided with a tracking wheel seat 32 and an adjustment mechanism 33 for driving the tracking wheel seat 32 to move closer to or further away from the steel pipe to be cut on the other side of the moving direction. At the same time, the tracking wheel seat 32 is equipped with a tracking wheel 34 through a rotating disk 321, which is used to adjust the rotation direction of the tracking wheel 34 through the rotating disk 321.

[0023] During operation, the steel pipe to be cut is first placed into the rotating roller assembly 10. Then, the cutting trolley 30 is pushed along the travel track 20 to the underside of the steel pipe. The torch support 31 and the tracking wheel 34 are located on opposite sides of the steel pipe. The position of the tracking wheel 34 is adjusted by the adjustment mechanism 33 to ensure that the tracking wheel 34 makes full contact with the side wall of the steel pipe and presses firmly against it. The rotating roller 11 is controlled to rotate by the potentiometer, and the steel pipe rotates accordingly. The steel pipe is rotated clockwise or counterclockwise for one revolution, and then the travel trajectory of the tracking wheel 34 is checked to see if it overlaps. If it does not overlap, the rotating disk 321 on the tracking wheel seat 32 is adjusted to rotate the direction of the tracking wheel 34. The steel pipe is then rotated again, and after one revolution, the travel trajectory of the tracking wheel 34 is checked again to see if it overlaps. This process is repeated until the travel trajectory of the tracking wheel 34 overlaps. To ensure the perpendicularity of the tracking wheel 34 to the steel pipe, the cutting torch 311 is installed on the torch support 31. The cutting nozzle of the torch 311 is adjusted to the required cutting angle. The steel pipe is then rotated to start the cutting torch 311 and begin cutting. After the steel pipe has rotated one revolution, the starting and ending points of the cut coincide, completing the cutting process. During this process, the cutting carriage 30 maintains close contact with the steel pipe via the tracking wheel 34. Even if the steel pipe experiences axial movement, the tracking wheel 34 will drive the cutting carriage 30 to move synchronously along the travel track 20. This ensures that the cutting torch 311 on the cutting carriage 30 maintains a constant relative position with the steel pipe, greatly improving the cutting quality (minor misalignment is acceptable). This avoids the need for manual grinding to correct misaligned cuts, resulting in high work efficiency. The tracking wheel 34 generates a travel trajectory through hard contact. When the travel trajectories do not coincide, these trajectories can be erased, and the steel pipe can be rotated again for testing to accurately determine the rotational position of the tracking wheel 34.

[0024] In one embodiment, the roller shaft of the rotating roller 11 is connected to a rotating motor 12, and the rotating motor 12 is electrically connected to a potentiometer.

[0025] In one embodiment, the cutting trolley 30 and the travel track 20 are slidably coupled. In another embodiment, the bottom of the cutting trolley 30 is equipped with travel wheels, and the surface of the travel track 20 is provided with guide wheel grooves 21 that cooperate with the travel wheels, so that the cutting trolley 30 can move directionally within the guide wheel grooves 21 by means of the travel wheels, wherein the guide wheel grooves 21 are rib-like or groove-like structures.

[0026] In one embodiment, the tracking wheel seat 32 and the rotating disk 321 are respectively provided with a plurality of positioning grooves 301 (or waist-shaped arc grooves). The plurality of positioning grooves 301 are evenly distributed along the circumference of the rotating disk 321, and locking screws 322 are installed in the positioning grooves 301. The tracking wheel 34 is installed on the side of the rotating disk 321 away from the tracking wheel seat 32. When the travel paths of the tracking wheel 34 do not coincide, first loosen the locking screws 322. The locking screws 322 remain in the positioning grooves 301 and serve as guides. Then, rotate the rotating disk 321 clockwise or counterclockwise. After rotating a certain angle, fix the rotating disk 321 to the tracking wheel seat 32 again with the locking screws 322. Then, test again to confirm whether the travel paths of the tracking wheel 34 coincide, until the travel paths of the tracking wheel 34 completely coincide after the steel pipe rotates one revolution, indicating that the tracking wheel 34 and the steel pipe have maintained perpendicularity.

[0027] More preferably, the adjustment mechanism 33 includes a rotating frame 331 disposed on the top of the cutting carriage 30. An L-shaped connecting frame 332 is hinged to the top of the rotating frame 331, wherein the L-shaped connecting frame 332 is connected to the rotating frame 331 at a corner position. A tracking wheel seat 32 is disposed at one end of the L-shaped connecting frame 332, and a telescopic element 35 is connected to the other end of the L-shaped connecting frame 332. The tracking wheel seat 32 is close to the torch support 31, and the telescopic element 35 is preferably a cylinder. The cylinder is connected to the L-shaped connecting frame 322 via a piston rod. In this way, the piston rod of the cylinder pushes or pulls back the outer end of the L-shaped connecting frame 322. Under the hinge action, the inner end of the L-shaped connecting frame 322 will cause the tracking wheel seat 32 and the tracking wheel 34 to swing upwards or downwards, thereby stably pressing against the surface of the steel pipe or detaching from the steel pipe.

[0028] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The advantages of the present invention have been fully and effectively realized. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations may be made to the implementation of the present invention without departing from the stated principles.

Claims

1. Flame cutting apparatus, characterized in that The application relates to a cutting device for steel pipes, which comprises a rotating roller set, a walking track and a cutting trolley, wherein the rotating roller set comprises a plurality of pairs of rotating rollers capable of rotating and used for supporting a steel pipe to be cut in cooperation with each other, the walking track is opposite to the plurality of pairs of rotating rollers, the cutting trolley is arranged on the walking track in a manner capable of being driven to move in a direction, the cutting trolley is arranged on one side of the moving direction and provided with a torch support, an upper part of the torch support is provided with a torch, a cutting nozzle of the torch is close to the other side of the moving direction, the cutting trolley is arranged on the other side of the moving direction and provided with a tracking wheel seat and an adjusting mechanism for driving the tracking wheel seat to relatively approach or move away from the steel pipe to be cut, the tracking wheel seat is provided with a tracking wheel through a rotating disc for adjusting a rotating direction of the tracking wheel.

2. The flame cutting apparatus as defined in claim 1, wherein The rotating roller set comprises 3-6 pairs of rotating rollers, and each pair of rotating rollers comprises two gap-matched rotating rollers.

3. The flame cutting apparatus as claimed in claim 1 or 2, characterized in that, Roll shafts of the rotating rollers are connected with rotating motors, and the rotating motors are electrically connected with potentiometers.

4. The flame cutting apparatus as defined in claim 1, wherein The cutting trolley and the walking track are in sliding fit.

5. The flame cutting apparatus as defined in claim 1, wherein, Bottoms of the cutting trolleys are provided with walking wheels, and surfaces of the walking tracks are provided with guide wheel grooves matched with the walking wheels.

6. The flame cutting apparatus as defined in claim 1, wherein, The tracking wheel seat and the rotating disc are correspondingly provided with a plurality of positioning grooves which are uniformly distributed along a circumferential direction of the rotating disc, the positioning grooves are provided with locking screws, and the tracking wheel is arranged on a side of the rotating disc away from the tracking wheel seat.

7. The flame cutting apparatus as defined in claim 6, wherein The adjusting mechanism comprises a rotating frame arranged on the top of the cutting trolley, a top of the rotating frame is connected with an L-shaped connecting frame in a hinged manner, the L-shaped connecting frame is connected with the rotating frame at a corner position, the tracking wheel seat is arranged on one end of the L-shaped connecting frame, the other end of the L-shaped connecting frame is connected with a telescopic element, and the tracking wheel seat is close to the torch support.

8. The flame cutting apparatus as defined in claim 7, wherein The telescopic element is a gas cylinder, and the gas cylinder is connected with the L-shaped connecting frame through a piston rod.

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