A cutting device for oil pipeline production

Abstract

The present invention provides a cutting device for oil pipeline production, including a bracket, a box body is provided on one side of the bracket, a transmission shaft extends from the upper side wall of the box body, a rotating rod is fixedly connected to the end of the transmission shaft, a slider with a "T"-shaped cross section is slidably provided on both sides of the rotating rod, a convex block is fixedly connected to the middle of the front of the slider, the front of the convex block is an inclined surface, and a mounting groove is provided, a tool is provided in the mounting groove, the bracket includes a second hydraulic cylinder and a supporting arc rod, a second hydraulic rod is extended from the upper end of the second hydraulic cylinder, the end of the supporting arc rod is fixedly connected to the end of the second hydraulic rod, a third hydraulic rod is extended from the upper end of the two second hydraulic rods close to the box body, and the upper ends of the two third hydraulic rods are commonly connected to a fixed arc rod. The present invention is suitable for groove processing of pipelines with different diameters.

Description

Technical Field

[0001] The invention relates to the technical field of pipeline cutting, in particular to a cutting device for oil pipeline production. Background Art

[0002] A pipeline is a device connected by pipes, pipe connectors and valves for transporting gas, liquid or fluid with solid particles. For oil pipelines, welding is usually used to connect two pipes, or flanges are welded at the ends of the pipes. When welding pipes, the ends of the pipes need to be grooved.

[0003] The existing pipeline groove processing is generally placed on a lathe, but the lathe generally rotates the workpiece, which is not conducive to the groove processing of the pipeline. There are also specialized groove processing equipment, but the processing tool is generally only one, and the force imbalance is easy to occur during the processing. Summary of the invention

[0004] In order to solve the above problems, the present invention discloses a cutting device for oil pipeline production, including a bracket, a box body is arranged on one side of the bracket, a transmission shaft extends from the upper side wall of the box body, a rotating rod is fixedly connected to the end of the transmission shaft, a slider with a "T"-shaped cross section is slidably arranged on both sides of the rotating rod, a protrusion is fixedly connected to the middle of the front of the slider, the front of the protrusion is an inclined surface, and a mounting groove is arranged, and a tool is arranged inside the mounting groove. That is, the distance between the two tools can be adjusted according to the diameter of the pipeline to improve the application range of the device, and two tools are arranged at the same time to improve the cutting efficiency while ensuring the force balance of the rotating rod. This structure is used for the groove cutting operation of the pipeline.

[0005] The bracket includes a second hydraulic cylinder and a supporting arc rod, a second hydraulic rod is extended from the upper end of the second hydraulic cylinder, the end of the supporting arc rod is fixedly connected to the end of the second hydraulic rod, a third hydraulic rod is extended from the upper ends of the two second hydraulic rods close to the box, and the upper ends of the two third hydraulic rods are commonly connected to a fixed arc rod. When operating, the pipeline is placed on the supporting arc rod, and in a natural state, the axis of the pipeline is located directly below the axis of the transmission shaft, and the second hydraulic cylinder is actuated to make the two axes coincide, and then the third hydraulic rod is actuated to realize the downward movement of the fixed arc rod to buckle the pipeline, thereby fixing the pipeline. With the help of the fixed arc rod and the supporting arc rod, the support and fixing operation of pipelines of different diameters can be realized.

[0006] Preferably, one end of the transmission shaft is splined with a main shaft, and the transmission shaft is axially slidable relative to the main shaft, so as to ensure that the transmission shaft can move axially without power disconnection.

[0007] Preferably, a first hydraulic cylinder is provided on one side of the transmission shaft, and one end of the first hydraulic cylinder is fixedly connected to the side wall of the transmission shaft, and a first hydraulic rod is extended from the other end of the first hydraulic cylinder, and the end of the first hydraulic rod is fixedly connected to the side wall of the main shaft. Since the pipeline is fixed, the tool needs to move axially, and the first hydraulic cylinder and the second hydraulic rod are used to push the rotating shaft of the transmission shaft to move.

[0008] Preferably, a groove is provided on the front of the rotating rod, a plurality of first bolts are threadedly connected to the front of the slider, and the ends of the first bolts are against the inner wall of the groove, a rear baffle is provided on the back of the slider, a second bolt is inserted on the rear baffle, and the second bolt is threadedly matched with the slider, so as to fix the slider tightly on the rotating rod.

[0009] Preferably, a cover plate is provided at the upper end of the protrusion, and the cover plate covers the upper end of the tool, and a third bolt is inserted in the middle of the cover plate, and the third bolt is threadedly connected to the protrusion, so as to restrict the tool in the installation slot, and the cover plate can be removed by removing the third bolt when replacing the tool.

[0010] Preferably, the side walls of the adjacent second hydraulic cylinders are fixedly connected with connecting cross bars to improve the stability of the support.

[0011] Preferably, a piston is provided inside the second hydraulic rod, and the lower end of the third hydraulic rod is fixedly connected to the piston, an oil inlet is provided on the upper side wall of the second hydraulic rod, and hydraulic oil enters the upper part of the piston, and a breathing channel is provided inside the third hydraulic rod from top to bottom, and the breathing channel is connected to the lower chamber of the piston. In this case, the second hydraulic rod is used as a cylinder to realize the up and down movement of the third hydraulic rod.

[0012] The beneficial effects of the present invention are as follows:

[0013] 1. Two tools are set, and the tools can be symmetrically slid to the position, so that the force is balanced when the device is working. At the same time, the tool position can be changed, so pipes of different diameters can be processed.

[0014] 2. The bracket includes a supporting arc rod and a fixing arc rod, which can support and fix pipes of different diameters, as well as position them, which is beneficial to the processing of the groove. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional schematic diagram of the present invention;

[0016] Figure 2 It is a three-dimensional schematic diagram of the bracket of the present invention;

[0017] Figure 3 is a cross-sectional schematic diagram of a third hydraulic rod of the present invention;

[0018] Figure 4 is a three-dimensional schematic diagram of the cutting mechanism of the present invention;

[0019] Figure 5 It is an exploded schematic diagram of the tool fixing structure of the present invention.

[0020] List of reference numerals:

[0021] 1. Bracket; 2. Rotating rod; 3. Box; 4. First hydraulic cylinder; 5. Transmission shaft; 6. First hydraulic rod; 7. Main shaft; 8. Slider; 9. Cover plate; 10. Cutting tool; 11. Groove; 12. Protrusion; 13. Mounting groove; 14. Bump; 15. First bolt; 16. Rear baffle; 17. Second bolt; 18. Third bolt;

[0022] 101. Supporting arc rod; 102. Second hydraulic rod; 103. Second hydraulic cylinder; 104. Connecting cross rod; 105. Third hydraulic rod; 106. Fixed arc rod; 107. Breathing channel. DETAILED DESCRIPTION

[0023] The present invention is further explained below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the accompanying drawings, and the words "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0024] Combination Figures 1 to 5 As shown, a cutting device for oil pipeline production includes a bracket 1, the bracket 1 is used to place a fixed pipeline structure, a box 3 is provided on one side of the bracket 1, and a power structure is provided inside the box 3, specifically including a motor for providing power, a speed change structure and a related hydraulic source, a transmission shaft 5 extends from the upper side wall of the box 3, and the transmission shaft 5 can be driven to rotate by the internal power structure, and the end of the transmission shaft 5 is fixedly connected with a rotating rod 2, and both sides of the rotating rod 2 are slidably provided with a slider 8 with a "T"-shaped cross section, and before cutting, the position of the slider 8 can be adjusted, and a protrusion 14 is fixedly connected to the middle of the front of the slider 8, and the front of the protrusion 14 is an inclined surface, and the inclination angle of the inclined surface is the processing angle of the pipeline groove, and a mounting groove 13 is provided, and a tool 10 is provided inside the mounting groove 13, that is, the tool 10 and the inclination angle are consistent with the inclination angle of the inclined surface. Since a pair of tools 10 are provided during cutting, the cutting efficiency can be improved, and the force balance of the rotating rod 2 can be improved, and the position of the slider 8 can be changed, so as to realize the processing of the groove of pipelines with different diameters.

[0025] The bracket 1 includes a second hydraulic cylinder 103 and a supporting arc rod 101. A second hydraulic rod 102 is extended from the upper end of the second hydraulic cylinder 103. The end of the supporting arc rod 101 is fixedly connected to the end of the second hydraulic rod 102. During operation, the pipeline is placed on the supporting arc rod 101. Due to its arc-shaped structure, the pipeline can roll naturally. Its axis and the axial direction of the transmission shaft are located on the same vertical plane. The second hydraulic cylinder 103 works to lift the pipeline, thereby achieving the coincidence of the two axes. A third hydraulic rod 105 is extended from the upper ends of the two second hydraulic rods 102 close to the box body 3. The upper ends of the two third hydraulic rods 105 are commonly connected to a fixed arc rod 106. After the two axes coincide, the third hydraulic rod 105 moves downward, and the fixed arc rod 106 clamps the side wall of the pipeline to improve the stability of the groove cutting.

[0026] One end of the transmission shaft 5 is splined with the main shaft 7, and the transmission shaft 5 is axially slidable relative to the main shaft 7. One end of the main shaft 7 is fixedly connected to the output end of the reduction structure to drive the main shaft 7 to rotate. The spline matching between the main shaft 7 and the transmission shaft 5 does not affect the axial movement of the transmission shaft 5.

[0027] A first hydraulic cylinder 4 is provided on one side of the transmission shaft 5, and one end of the first hydraulic cylinder 4 is fixedly connected to the side wall of the transmission shaft 5, and a first hydraulic rod 6 is extended from the other end of the first hydraulic cylinder 4, and the end of the first hydraulic rod 6 is fixedly connected to the side wall of the main shaft 7. Since the pipeline is fixed, it is necessary to realize the movement of the tool 10 toward the pipeline. When the first hydraulic cylinder 4 works, the first hydraulic rod 6 can push the rotating shaft 5 to move axially, thereby changing the position of the tool 10.

[0028] A groove 11 is provided on the front of the rotating rod 2, and a plurality of first bolts 15 are threadedly connected to the front of the slider 8, and the ends of the first bolts 15 are against the inner wall of the groove 11, and the purpose of this setting is to prevent the first bolts 15 from damaging the mating surface between the slider 8 and the rotating rod 2. A rear baffle 16 is provided on the back of the slider 8, and a through hole is provided on the rotating rod 2, and one side of the slider 8 passes through the through hole and is fixedly connected to the rear baffle 16, and a second bolt 17 is inserted on the rear baffle 16, and the second bolt 17 is threadedly matched with the slider 8. When the position of the slider 8 needs to be changed, the first bolt 15 is loosened and the slider 8 is moved.

[0029] A cover plate 9 is provided at the upper end of the protrusion 14, and the cover plate 9 covers the upper end of the tool 10. A third bolt 18 is inserted through the middle of the cover plate 9, and the third bolt 18 is threadedly connected to the protrusion 14. Bosses 12 are provided at both ends of the tool 10, and the bosses 12 fit inside the mounting groove 13 to prevent the tool 10 from falling off even when blocked by the cover plate 8.

[0030] The side wall of the adjacent second hydraulic cylinder 103 is fixedly connected with a connecting cross bar 104 to improve the stability of the bracket 1.

[0031] The second hydraulic rod 102 is provided with a piston inside, and the lower end of the third hydraulic rod 105 is fixedly connected to the piston. The upper side wall of the second hydraulic rod 102 is provided with an oil inlet, and the hydraulic oil enters the upper part of the piston. When the hydraulic oil is pumped in, the piston is pressed to move downward, and the third hydraulic rod 105 is pulled down at the same time. When the third hydraulic rod 105 needs to rise, the hydraulic oil needs to be sucked out by negative pressure. The third hydraulic rod 105 is provided with a breathing channel 107 running through the inside from top to bottom, and the breathing channel 107 is connected to the lower chamber of the piston. The lower chamber is released so that the lower chamber is connected to the atmosphere.

[0032] The technical means disclosed in the scheme of the present invention are not limited to the technical means disclosed in the above-mentioned implementation mode, but also include technical schemes composed of any combination of the above technical features.

Claims

1. A cutting device for oil pipeline production, characterized in that: The invention comprises a bracket (1), a box body (3) is arranged on one side of the bracket (1), a transmission shaft (5) extends from the upper side wall of the box body (3), the end of the transmission shaft (5) is fixedly connected to a rotating rod (2), a sliding block (8) with a "T"-shaped cross section is slidably arranged on both sides of the rotating rod (2), a protrusion (14) is fixedly connected to the middle of the front side of the sliding block (8), the front side of the protrusion (14) is an inclined surface and is provided with a mounting groove (13), and a tool (10) is arranged in cooperation with the interior of the mounting groove (13); The bracket (1) comprises a second hydraulic cylinder (103) and a supporting arc rod (101); a second hydraulic rod (102) is extended from the upper end of the second hydraulic cylinder (103); an end of the supporting arc rod (101) is fixedly connected to an end of the second hydraulic rod (102); a third hydraulic rod (105) is extended from the upper ends of two second hydraulic rods (102) close to the box body (3); and the upper ends of the two third hydraulic rods (105) are commonly connected to a fixed arc rod (106).

2. A cutting device for oil pipeline production according to claim 1, characterized in that: One end of the transmission shaft (5) is spline-matched with a main shaft (7), and the transmission shaft (5) is axially slidably arranged relative to the main shaft (7).

3. A cutting device for oil pipeline production according to claim 2, characterized in that: A first hydraulic cylinder (4) is provided on one side of the transmission shaft (5), and one end of the first hydraulic cylinder (4) is fixedly connected to the side wall of the transmission shaft (5), and a first hydraulic rod (6) is extended from the other end of the first hydraulic cylinder (4), and the end of the first hydraulic rod (6) is fixedly connected to the side wall of the main shaft (7).

4. A cutting device for oil pipeline production according to claim 1, characterized in that: The front side of the rotating rod (2) is provided with a groove (11); the front side of the sliding block (8) is threadedly connected with a plurality of first bolts (15), and the ends of the first bolts (15) abut against the inner wall of the groove (11); the back side of the sliding block (8) is provided with a rear baffle (16), and the rear baffle (16) is interspersed with second bolts (17), and the second bolts (17) and the sliding block (8) are threadedly matched.

5. The cutting device for oil pipeline production according to claim 1, characterized in that: A cover plate (9) is provided at the upper end of the protrusion (14), and the cover plate (9) covers the upper end of the tool (10). A third bolt (18) is inserted through the middle of the cover plate (9), and the third bolt (18) is threadedly connected to the protrusion (14).

6. A cutting device for oil pipeline production according to claim 1, characterized in that: A connecting cross bar (104) is fixedly connected to the side wall adjacent to the second hydraulic cylinder (103).

7. A cutting device for oil pipeline production according to claim 1, characterized in that: A piston is arranged inside the second hydraulic rod (102), and the lower end of the third hydraulic rod (105) is fixedly connected to the piston. An oil inlet is arranged on the upper side wall of the second hydraulic rod (102), and hydraulic oil enters the upper part of the piston. A breathing passage (107) is arranged inside the third hydraulic rod (105) to pass through from top to bottom, and the breathing passage (107) is connected to the lower chamber of the piston.

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