Flame cutting type steel pipe girdling device

Abstract

The utility model belongs to the technical field of steel pipe cutting, and particularly relates to a flame cutting type steel pipe girdling device which comprises a sleeving assembly capable of fixing the flame cutting type steel pipe girdling device to any position of a steel pipe in the mode that the center line of the flame cutting type steel pipe girdling device coincides with the steel pipe. And a cutting assembly capable of continuously cutting the steel pipe after keeping a required distance from the steel pipe is arranged on the displacement assembly. The annular structure formed by the lower arc-shaped frame and the upper arc-shaped frame is conveniently arranged on the steel pipe in a sleeving mode through the action of the positioning piece and the abutting piece in the mode that the center line coincides with the center line of the steel pipe to be cut, so that the steel pipe can be conveniently and rapidly cut when the nozzle annularly cuts the steel pipe and adjusts the annular cutting position through braking and moving of the annular structure. A fixed distance can be always kept between the device and the steel pipe, so that the device can be used for girdling multiple positions of the steel pipe, and the notch quality is ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to steel pipe cutting technical field, specifically relates to a flame cutting type steel pipe ring cutting device. BACKGROUND

[0002] After the steel pipe is rolled, the irregular parts of the steel pipe need to be cut, and the cutting method and equipment need to be selected according to the material and thickness of the steel pipe and the cutting requirements, and the steel pipe needs to be cut to length to obtain the design size. The commonly used steel pipe cutting methods include flame cutting, spark cutting and laser cutting. The flame cutting is suitable for cutting carbon steel and low alloy steel.

[0003] The Chinese patent document with the authorized announcement number CN222002147U discloses a flame cutting type steel pipe ring cutting device, which is placed on the steel pipe to be cut through the movable support seat and the fixed support seat. The ring and the cutting gun are rotated together around the steel pipe through the work of the rotating motor, and the ring cutting of the steel pipe is completed.

[0004] However, in the prior art, when the ring cutting device cuts the long steel pipe, the steel pipe needs to be frequently moved to cut the different positions of the steel pipe, and when cutting the steel pipes with different diameters, if the center line of the ring and the steel pipe cannot be overlapped by taking measures, it is difficult to ensure the quality of the cut. Therefore, a flame cutting type steel pipe ring cutting device is provided. UTILITY MODEL CONTENTS

[0005] The purpose of the utility model is to provide a flame cutting type steel pipe ring cutting device.

[0006] The technical scheme adopted by the utility model is as follows:

[0007] A flame cutting type steel pipe ring cutting device, which comprises a sleeving assembly that can fix the device on the steel pipe at any position with the center line coinciding with the steel pipe, a displacement assembly provided in the sleeving assembly and capable of cutting the steel pipe, and a cutting assembly provided on the displacement assembly and capable of cutting the steel pipe continuously at a required distance.

[0008] The sleeving assembly comprises a buckling piece that can rotate the cutting assembly around the steel pipe, a positioning piece that can rotate the cutting assembly around the center line of the steel pipe at a required position, and an abutting piece that can stably move the device on the steel pipe.

[0009] The buckling piece comprises a lower arc-shaped frame, an upper arc-shaped frame movably connected above the lower arc-shaped frame, and a clamping frame movably connected behind the lower arc-shaped frame and the upper arc-shaped frame.

[0010] The cutting assembly comprises a spray head provided on one side of the lower arc-shaped frame.

[0011] Preferably, the buckle further comprises a first sliding groove integrally formed on the inner side of the lower arc-shaped frame and the upper arc-shaped frame respectively, and screw holes are arranged on the lower arc-shaped frame, the upper arc-shaped frame and the clamping frame.

[0012] Preferably, the positioning member comprises a first rotating rod fixedly connected to one side of the lower arc-shaped frame and the upper arc-shaped frame respectively, and an arc-shaped abutting plate is movably connected to one end of the first rotating rod.

[0013] Preferably, the abutting member comprises a second rotating rod fixedly connected to one side of the lower arc-shaped frame and the upper arc-shaped frame respectively, and a universal ball is fixedly connected to one end of the second rotating rod.

[0014] Preferably, the lower arc-shaped frame and the upper arc-shaped frame are rotationally connected, the depth and the radius of the first sliding groove of the lower arc-shaped frame and the upper arc-shaped frame are consistent, and the lower arc-shaped frame and the upper arc-shaped frame are slidably connected with the clamping frame.

[0015] Preferably, the lower arc-shaped frame and the upper arc-shaped frame are threadedly connected with the first rotating rod and the second rotating rod.

[0016] Preferably, the first rotating rod is rotationally connected with the arc-shaped abutting plate.

[0017] The beneficial effects of the present application are as follows: the annular structure composed of the lower arc-shaped frame and the upper arc-shaped frame is sleeved on the steel pipe in a manner that the center line coincides with the center line of the steel pipe to be cut, so that the spray head can always maintain a fixed distance from the steel pipe when the annular cutting of the steel pipe is stopped and moved, thereby allowing the device to cut the steel pipe at multiple positions and ensuring the quality of the cut. BRIEF DESCRIPTION OF DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used together with the following specific embodiments to explain the present application, but do not constitute a limitation on the present application. In the drawings:

[0019] Figure 1 is a structural schematic view of a flame cutting type steel pipe annular cutting device according to the present application;

[0020] Figure 2 is a front view structural schematic view of a flame cutting type steel pipe annular cutting device according to the present application;

[0021] Figure 3 is Figure 1 another view structural schematic view of

[0022] Figure 4 is Figure 1 a partial component structural schematic view of

[0023] The reference signs are explained as follows:

[0024] 1. Mounting Components; 101. Lower Arc-shaped Frame; 102. Upper Arc-shaped Frame; 103. First Slide Groove; 104. Engaging Frame; 105. Screw Hole; 106. First Rotating Rod; 107. Arc-shaped Abutment Plate; 108. Second Rotating Rod; 109. Universal Ball Joint; 2. Shifting Components; 201. Arc-shaped Plate; 202. Second Slide Groove; 203. Actuating Frame; 204. Two-way Cylinder; 205. Abutment Block; 206. Rack; 207. Shifting Frame; 208. Dual-axis Motor; 209. Gear; 3. Cutting Components; 301. Lifting Frame; 302. Electric Push Rod; 303. Fixing Sleeve; 304. Nozzle. Detailed Implementation

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The present invention will be further described below with reference to the embodiments and accompanying drawings.

[0028] like Figures 1-4 As shown, a flame-cutting steel pipe circumferential cutting device includes a sleeve assembly 1 that can fix the device at any position on the steel pipe with its center line coinciding with the steel pipe. The sleeve assembly 1 is provided with a displacement assembly 2 that enables the device to perform circumferential cutting on the steel pipe. The displacement assembly 2 is provided with a cutting assembly 3 that can continuously cut the steel pipe after maintaining the required distance from it.

[0029] In the embodiment, the sleeve assembly 1 comprises a buckling member for rotating the cutting assembly 3 around the steel pipe, a positioning member for rotating the cutting assembly 3 around the center line of the steel pipe at a desired position, and an abutting member for stably moving the device on the steel pipe.

[0030] The buckling member comprises a lower arc-shaped frame 101, an upper arc-shaped frame 102 movably connected above the lower arc-shaped frame 101, and a clamping frame 104 movably connected to the rear of the lower arc-shaped frame 101 and the upper arc-shaped frame 102. The buckling member further comprises first sliding grooves 103 integrally formed on the inner sides of the lower arc-shaped frame 101 and the upper arc-shaped frame 102, respectively. Screw holes 105 are provided on the lower arc-shaped frame 101, the upper arc-shaped frame 102, and the clamping frame 104. The positioning member comprises first rotating rods 106 fixedly connected to one side of the lower arc-shaped frame 101 and the upper arc-shaped frame 102, respectively. An arc-shaped abutting plate 107 is movably connected to one end of the first rotating rod 106. The abutting member comprises second rotating rods 108 fixedly connected to one side of the lower arc-shaped frame 101 and the upper arc-shaped frame 102, respectively. A universal ball 109 is fixedly connected to one end of the second rotating rod 108.

[0031] The lower arc-shaped frame 101 and the upper arc-shaped frame 102 are rotationally connected. The depths and radii of the first sliding grooves 103 of the lower arc-shaped frame 101 and the upper arc-shaped frame 102 are consistent. The lower arc-shaped frame 101, the upper arc-shaped frame 102, and the clamping frame 104 are slidably connected. The lower arc-shaped frame 101, the upper arc-shaped frame 102, the first rotating rod 106, and the second rotating rod 108 are threadedly connected. The first rotating rod 106 and the arc-shaped abutting plate 107 are rotationally connected.

[0032] Through the relative rotation of the lower arc-shaped frame 101 and the upper arc-shaped frame 102, the device can be conveniently sleeved and buckled on the steel pipe or removed from the steel pipe. Through the installation of the clamping frame 104, the rotation between the lower arc-shaped frame 101 and the upper arc-shaped frame 102 is limited, so that the lower arc-shaped frame 101 and the upper arc-shaped frame 102 can form a stable ring structure. Through the first sliding groove 103, the movable range of the arc-shaped plate 201 in the lower arc-shaped frame 101 and the upper arc-shaped frame 102 is limited. Through the bolts that can be inserted into the screw holes 105, the connection effect of the lower arc-shaped frame 101, the upper arc-shaped frame 102, and the clamping frame 104 is improved. Through the rotation of the first rotating rod 106 and the second rotating rod 108, the distances of the arc-shaped abutting plate 107 and the universal ball 109 to the center line of the ring structure are adjusted, respectively. Through the contact of the arc-shaped abutting plate 107 with the steel pipe, sufficient friction is provided to limit the movement of the device on the steel pipe. When the arc-shaped abutting plate 107 is not in contact with the steel pipe, the contact of the universal ball 109 with the steel pipe can make the center line of the ring structure move on the steel pipe on the premise that the center line of the ring structure coincides with the center line of the steel pipe.

[0033] In the embodiment: the displacement assembly 2 comprises an arc-shaped plate 201 movably connected in the lower arc-shaped frame 101, second sliding grooves 202 are integrally formed on both sides of the arc-shaped plate 201, a poking frame 203 is fixedly connected to the outer side of the arc-shaped plate 201, a bidirectional air cylinder 204 is fixedly installed on the poking frame 203, an abutting block 205 is fixedly connected to the extension end of the bidirectional air cylinder 204, a rack 206 is fixedly connected to the inner side of the arc-shaped plate 201, a displacement frame 207 is movably connected in the arc-shaped plate 201, a double-shaft motor 208 is fixedly installed in the displacement frame 207, and a gear 209 is fixedly connected to the output end of the double-shaft motor 208.

[0034] The lower arc-shaped frame 101 is slidingly connected with the arc-shaped plate 201, the arc-shaped plate 201 is slidingly connected with the displacement frame 207, and the rack 206 is meshingly connected with the gear 209.

[0035] The arc-shaped plate 201 provides mounting positions for the rack 206, the displacement frame 207 and other components, the second sliding grooves 202 limit the movable range of the displacement frame 207 on the arc-shaped plate 201, the poking frame 203 provides mounting positions for the bidirectional air cylinder 204, and the staff can conveniently poke the arc-shaped plate 201 through the poking frame 203, so that the arc-shaped plate 201 can drive the displacement frame 207 and other components to rotate around the center line in the ring structure, the bidirectional air cylinder 204 adjusts the distance between the abutting block 205 and the two sides of the lower arc-shaped frame 101 and the upper arc-shaped frame 102, and the abutting block 205 contacts the lower arc-shaped frame 101 or the upper arc-shaped frame 102 to provide sufficient friction, so as to stop the arc-shaped plate 201 at a certain position in the ring structure, the displacement frame 207 provides mounting positions for the double-shaft motor 208 and part of the components of the cutting assembly 3, and the meshing of the rack 206 and the gear 209 connected to the output end of the double-shaft motor 208 enables the displacement frame 207 to slide only after the double-shaft motor 208 operates, relative to the stopped arc-shaped plate 201.

[0036] In the embodiment: the cutting assembly 3 comprises a lifting frame 301 movably connected on the displacement frame 207, an electric push rod 302 is fixedly installed in the displacement frame 207, a fixed sleeve 303 is fixedly connected to one side of the lifting frame 301, and a spray head 304 is fixedly installed in the fixed sleeve 303.

[0037] The shifting frame 207 is slidingly connected with the lifting frame 301; the nozzle 304 is installed on one side of the lifting frame 301 through the fixing sleeve 303, so that the lifting frame 301 can drive the nozzle 304 to move synchronously when the shifting frame 207 moves, or the nozzle 304 can change the distance to the center line of the annular structure formed by the lower arc-shaped frame 101 and the upper arc-shaped frame 102 when the lifting frame 301 is driven by the electric push rod 302 to move up and down relative to the shifting frame 207, the nozzle 304 is connected with the external gas and oxygen supply equipment to continuously supply gas and oxygen to the nozzle 304, so that the nozzle 304 can form high-temperature flame and high-speed oxygen flow at the nozzle, thereby realizing the precise cutting of the metal material.

[0038] Working principle: when the device is installed and used for flame cutting type steel pipe ring cutting, after the steel pipe is placed and fixed, the clamping frame 104 is removed, then the upper arc-shaped frame 102 is flipped relative to the lower arc-shaped frame 101, and the distance between the unconnected ends of the lower arc-shaped frame 101 and the upper arc-shaped frame 102 exceeds the diameter of the steel pipe, the device is sleeved and buckled on the steel pipe in the mode that the lower arc-shaped frame 101 is below the steel pipe and the upper arc-shaped frame 102 is above the steel pipe, then the lower arc-shaped frame 101, the upper arc-shaped frame 102 and the clamping frame 104 are connected through the external bolts which can be inserted into the screw holes 105.

[0039] After the above work is completed, the first rotating rod 106 connected with the upper arc-shaped frame 102 can be rotated, the height of the upper arc-shaped frame 102 on the steel pipe is adjusted through the rotation of the first rotating rod 106 under the condition that the arc-shaped abutting plate 107 connected with the first rotating rod 106 continuously contacts the steel pipe, until the center line of the annular structure formed by the lower arc-shaped frame 101 and the upper arc-shaped frame 102 coincides with the center line of the steel pipe. After the center lines of the two coincide, the other first rotating rod 106 and the other second rotating rod 108 are rotated, so that the other arc-shaped abutting plate 107 and the other universal ball 109 are tightly abutted against the steel pipe, thereby fixing the device on the steel pipe. When subsequent adjustment of the cutting position of the device on the steel pipe is needed, the arc-shaped abutting plate 107 can be separated from the steel pipe by rotating the first rotating rod 106 again, and then the device can be conveniently moved to the required position relative to the steel pipe under the condition that the universal balls 109 are tightly abutted against the steel pipe, after the movement is completed, the arc-shaped abutting plate 107 is tightly abutted against the steel pipe by rotating the first rotating rod 106, thereby stopping the device on the steel pipe.

[0040] When the device is stopped at the required position, the electric push rod 302 can be operated to adjust the distance between the nozzle of the nozzle 304 and the steel pipe, and when the nozzle 304 continuously sprays high-temperature flame and high-speed oxygen flow, the arc-shaped plate 201 can be moved by the dialing frame 203 to drive the shifting frame 207 and other components and the cutting assembly 3 to rotate around the center line of the steel pipe, or the shifting frame 207 can be slid relative to the stopped arc-shaped plate 201 by the operation of the double-shaft motor 208, and the cutting assembly 3 is driven to rotate around the center line of the steel pipe.

[0041] It should be noted that when the arc-shaped plate 201 is jogged by the jog frame 203, the operation of the bidirectional cylinder 204 needs to be controlled so that the bidirectional cylinder 204 only pushes the abutting block 205 to abut against the lower arc-shaped frame 101 or the upper arc-shaped frame 102 when the arc-shaped plate 201 does not need to move, and the operation of the double-shaft motor 208 also needs to be controlled so as to prevent the gear 209 from being separated from the rack 206 due to excessive rotation.

[0042] The preferred embodiments of the utility model are described in detail in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the technical personnel in the technical field without departing from the purpose of the utility model.

Claims

1. A flame cutting type steel pipe ring cutting device, characterized by: The device comprises a sleeving assembly (1) which can be fixed on the steel pipe at any position with the center line coinciding with the steel pipe, a shifting assembly (2) is arranged in the sleeving assembly (1) to cut the steel pipe, a cutting assembly (3) is arranged on the shifting assembly (2) to cut the steel pipe continuously at a required distance; The sleeving assembly (1) comprises a buckling piece which can rotate the cutting assembly (3) around the steel pipe, a positioning piece which can rotate the cutting assembly (3) around the center line of the steel pipe at a required position, and an abutting piece which can stably move the device on the steel pipe. The buckling piece comprises a lower arc-shaped frame (101), an upper arc-shaped frame (102) which is movably connected above the lower arc-shaped frame (101), and a clamping frame (104) which is movably connected behind the lower arc-shaped frame (101) and the upper arc-shaped frame (102). The cutting assembly (3) comprises a nozzle (304) arranged on one side of the lower arc-shaped frame (101).

2. A flame cutting ring cutting device for steel pipes as set forth in claim 1, characterized in that: The buckling piece further comprises first sliding grooves (103) which are integrally formed on the inner sides of the lower arc-shaped frame (101) and the upper arc-shaped frame (102), respectively, and screw holes (105) which are arranged on the lower arc-shaped frame (101), the upper arc-shaped frame (102), and the clamping frame (104).

3. A flame cutting ring cutting device for steel pipes as claimed in claim 2, characterized in that: The positioning piece comprises first rotating rods (106) which are fixedly connected on one side of the lower arc-shaped frame (101) and the upper arc-shaped frame (102), respectively, and arc-shaped abutting plates (107) which are movably connected on one end of the first rotating rods (106).

4. A flame cutting ring cutting device for steel pipes as claimed in claim 3, wherein: The abutting piece comprises second rotating rods (108) which are fixedly connected on one side of the lower arc-shaped frame (101) and the upper arc-shaped frame (102), respectively, and universal balls (109) which are fixedly connected on one end of the second rotating rods (108).

5. A flame cutting ring cutting device for steel pipes as claimed in claim 2, wherein: The lower arc-shaped frame (101) and the upper arc-shaped frame (102) are rotationally connected, the depths and radii of the first sliding grooves (103) of the lower arc-shaped frame (101) and the upper arc-shaped frame (102) are consistent, and the lower arc-shaped frame (101), the upper arc-shaped frame (102), and the clamping frame (104) are slidingly connected.

6. A flame cutting ring cutting device for steel pipes as claimed in claim 4, wherein: The lower arc-shaped frame (101), the upper arc-shaped frame (102), the first rotating rods (106), and the second rotating rods (108) are connected by threads.

7. A flame cutting ring cutting device for steel pipes as claimed in claim 6, characterized in that: The first rotating rods (106) and the arc-shaped abutting plates (107) are rotationally connected.

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