A leveling device for welding pressure steel pipes

Abstract

This invention relates to the field of machine tool metal processing technology and provides a leveling device for welding pressure steel pipes. The device includes a machine tool and a steel pipe body clamped and positioned on the machine tool. A drive assembly is bolted to the machine tool, and a leveling assembly is rotatably fitted onto the drive assembly. The drive assembly includes a positioning component and a turntable fixedly connected to the positioning component. The leveling assembly includes an internal grinding leveling component and several external grinding leveling components slidably fitted onto the internal grinding leveling component. This device solves the problem that existing leveling devices for pressure steel pipe welding struggle to simultaneously grind and level the metal burrs on the inner and outer walls of the pressure steel pipe end face before welding, thus affecting the subsequent welding process and reducing the final welding effect.

Description

Technical Field

[0001] This invention relates to the field of machine tool metal processing technology, and more specifically, to a leveling device for welding pressure steel pipes. Background Technology

[0002] In the welding of pressure steel pipes, the first step is to transfer the pressure steel pipes securely and safely to the processing machine tool for clamping and positioning before welding and grinding and leveling of the end face before welding. Then, a welding robot is used to perform welding operations on the two pressure steel pipes. With its technology, the robot can accurately control the welding parameters, including current, voltage and welding speed, thereby ensuring a high degree of consistency in welding quality and maximizing work efficiency.

[0003] Currently, existing leveling devices for pressure steel pipe welding often have the following technical problems when performing leveling operations before welding pressure steel pipes:

[0004] The existing leveling devices for welding pressure steel pipes cannot simultaneously grind and level the metal burrs on the inner and outer walls of the pipe ends before welding, which affects the subsequent welding process and reduces the welding effect of the pressure steel pipe. Summary of the Invention

[0005] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a leveling device for welding pressure steel pipes that can simultaneously grind and level the metal burrs on the inner and outer walls of the end of the steel pipe body before welding, so as to avoid affecting the subsequent welding process and improve the welding effect of the steel pipe body.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A leveling device for welding pressure steel pipes includes a machine tool and a steel pipe body clamped and positioned on the machine tool. A drive assembly is fixed to the machine tool by bolts, and a leveling assembly is rotatably fitted on the drive assembly. The drive assembly includes a positioning component and a turntable component fixedly connected to the positioning component.

[0008] The leveling assembly includes an internal grinding leveling component and several external grinding leveling components that slide on the internal grinding leveling component.

[0009] The positioning component includes an L-shaped mounting plate that is fixedly mounted on the machine tool by bolts. A vertical plate is fixed to one side of the L-shaped mounting plate, and a rotating shaft is rotatably fitted to one side of the vertical plate via a bearing. A first gear is fixed to one end of the rotating shaft, a connecting shaft is fixed to the center position of one end of the first gear, and a second gear is fixed to one end of the connecting shaft.

[0010] The internal grinding and leveling component includes a rectangular block. A rotating hole is provided through one side of the rectangular block to rotatably engage with the connecting shaft. Several guide frames are fixed in a circular array on the periphery of the rectangular block. A guide rod is slidably engaged inside the guide frame. An internal grinding stone is fixed at one end of the guide rod outside the guide frame. The guide rod is slidably engaged with the external grinding and leveling component.

[0011] The present invention is further configured such that: a mounting frame is fixed on one side of the rectangular block, a first brake motor is fixed on one outer side of the mounting frame, a rotating cylinder is fixed inside the mounting frame at the output shaft of the first brake motor, a gear ring that meshes with a second gear is fixed on the inner wall of the rotating cylinder, and the mounting frame and the output shaft of the first brake motor are rotatably coupled.

[0012] A positioning ear plate is fixed on one side of the rectangular block below the rotating hole.

[0013] A U-shaped frame is fixed inside the L-shaped mounting plate, and two symmetrical positioning holes are opened through the top of the U-shaped frame. The positioning holes and the positioning ear plate are connected by a pin.

[0014] The present invention is further configured such that: the turntable component includes a rotating disk fixedly installed on the circumferential side of the connecting shaft, and the circumferential side of the rotating disk is provided with a plurality of arc-shaped keyways.

[0015] Each of the aforementioned guide frames has a cross block that slides inside, and each of the aforementioned cross blocks has a first hinge seat fixed on one side.

[0016] The present invention is further configured such that: a rectangular frame is fixed on one side of each of the several guide frames near the top; an I-shaped slider is slidably fitted inside each of the several rectangular frames; a second hinge seat is fixed on the top of each of the several I-shaped sliders; a third hinge seat is fixed on the bottom of each of the several I-shaped sliders; a first hinge arm is hinged inside each of the several second hinge seats; and a second hinge arm is hinged inside each of the several third hinge seats.

[0017] The present invention is further configured such that: the second hinge arm is hinged to the first hinge seat;

[0018] Each of the aforementioned cross blocks has a toggle lever fixed on one side, and a limit plate is fixed at one end of the toggle lever. The toggle lever is slidably engaged with the arc-shaped keyway.

[0019] A limiting groove is formed through the circumference of the guide rod.

[0020] The external grinding and leveling component includes a guide ring that slides on the circumferential side of the guide rod, and a limiting block that slides on the inner wall of the guide ring.

[0021] The present invention is further configured such that: a fourth hinge seat is fixed on the outer wall of the guide ring and is hinged to the first hinge arm.

[0022] The outer wall of the fourth hinge seat is fixed with two symmetrical L-shaped connecting plates. The top of each L-shaped connecting plate is fixed with a vertical plate. A T-shaped connecting top plate is fixed between the two vertical plates. An external grinding stone is fixed at the bottom of the T-shaped connecting top plate.

[0023] The invention is further configured such that: two symmetrical mounting holes are provided through the outer side of the L-shaped mounting plate near the top, and the two mounting holes are fixedly connected to the processing machine tool by bolts.

[0024] The bottom of the L-shaped mounting plate is provided with a first rectangular groove, and the inner wall of the L-shaped mounting plate is provided with a second rectangular groove.

[0025] The present invention is further configured such that: a first slider is slidably fitted inside the first rectangular groove, and a second slider is slidably fitted inside the second rectangular groove;

[0026] A fifth hinge seat is fixed to the top of the first slider, and a sixth hinge seat is fixed to one side of the second slider. A lifting arm is hinged between the fifth hinge seat and the sixth hinge seat.

[0027] The top of the sixth hinge seat is fixed with a second brake motor, and the output shaft of the second brake motor is fixed with a third gear, which meshes with the first gear.

[0028] A telescopic cylinder is fixed on the inner side of the L-shaped mounting plate below the two mounting holes, and the telescopic end of the telescopic cylinder is fixedly connected to one side of the fifth hinge seat.

[0029] The advantages of this invention are:

[0030] 1. The present invention uses guide rods fixed on several cross blocks to slide linearly on several guide frames simultaneously, so that the inner grinding stones fixed at one end of the guide rods gradually approach the inner wall of the end of the steel pipe body, so as to grind and smooth the metal burrs on the inner wall of the end of the steel pipe body before welding, avoid affecting the subsequent welding process, and improve the welding effect of the steel pipe body in the later stage.

[0031] 2. In this invention, the first hinge arm is pulled down and rotated synchronously between the second and fourth hinge seats, causing the guide ring to slide linearly towards the rectangular block on the circumferential side of the guide rod. This ultimately allows the external grinding stone in the entire external grinding and leveling part to synchronously approach the end of the outer wall of the steel pipe body. This process is used to grind and level the metal burrs on the end of the outer wall of the steel pipe body before welding, avoiding their impact on the subsequent welding process and improving the welding effect of the steel pipe body.

[0032] 3. In the process of using this invention, the synchronous relative movement between the inner and outer grinding stones allows the inner and outer grinding stones to approach the inner and outer walls of the steel pipe body at the same time. This allows for the synchronous grinding and leveling of the metal burrs on the inner and outer walls of the steel pipe body before welding, preventing them from affecting the subsequent welding process and improving the welding effect of the steel pipe body in the later stage. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the structure of a leveling device for welding pressure steel pipes according to the present invention.

[0034] Figure 2 This is a front view of a leveling device for welding pressure steel pipes according to the present invention.

[0035] Figure 3 This is a schematic diagram of the structure of the driving component of the present invention.

[0036] Figure 4 This is a schematic diagram of the leveling component of the present invention.

[0037] Figure 5 This is a schematic diagram of the positioning component of the present invention.

[0038] Figure 6 This is a front view of the positioning component of the present invention.

[0039] Figure 7 This is a schematic diagram of the structure of the turntable component of the present invention.

[0040] Figure 8 This is a schematic diagram of the internal grinding and leveling component of the present invention.

[0041] Figure 9 For the present invention Figure 8 A magnified structural diagram of point A in the middle.

[0042] Figure 10 This is a side view of the internal grinding and leveling component of the present invention.

[0043] Figure 11 This is a schematic diagram of the structure of the external grinding and leveling component of the present invention.

[0044] Figure 12 This is a front view of the external grinding and leveling component of the present invention.

[0045] In the diagram: 1. Steel pipe body; 2. Drive assembly; 3. Leveling assembly; 4. Positioning component; 5. Turntable component; 6. Internal grinding leveling component; 7. External grinding leveling component; 401. L-shaped mounting plate; 402. Vertical plate; 403. Rotating shaft; 404. First gear; 405. Connecting shaft; 406. Second gear; 407. U-shaped frame; 408. Positioning hole; 409. Mounting hole; 410. First rectangular groove; 411. Second rectangular groove; 412. First slider; 413. Second slider; 414. Fifth hinge seat; 415. Sixth hinge seat; 416. Lifting arm; 417. Second brake motor; 418. Third gear; 419. Telescopic cylinder; 501. Turntable; 502. Arc-shaped keyway; 601. Rectangular... 602. Rotating hole; 603. Guide frame; 604. Guide rod; 605. Inner grinding stone; 606. Mounting bracket; 607. First brake motor; 608. Rotating cylinder; 609. Gear ring; 610. Positioning ear plate; 611. First hinge seat; 612. Rectangular frame; 613. I-shaped slider; 614. Second hinge seat; 615. Third hinge seat; 616. First hinge arm; 617. Second hinge arm; 618. Actuating rod; 619. Limiting round plate; 620. Limiting groove; 621. Cross block; 701. Guide ring; 702. Limiting block; 703. Fourth hinge seat; 704. L-shaped connecting plate; 705. Vertical plate; 706. T-shaped connecting top plate; 707. Outer grinding stone. Detailed Implementation

[0046] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0047] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0048] In this invention, unless otherwise stated, the directional terms such as "up" and "down" generally refer to the directions shown in the accompanying drawings, or to the vertical, perpendicular, or gravitational direction; similarly, for ease of understanding and description, "left" and "right" generally refer to the left and right shown in the accompanying drawings; "inner" and "outer" refer to the inner and outer contours of each component itself, but the above directional terms are not intended to limit this invention.

[0049] Example 1, please refer to Figure 1-12 The present invention provides the following technical solutions:

[0050] A leveling device for welding pressure steel pipes specifically includes a machine tool and a steel pipe body 1 clamped and positioned on the machine tool. A drive assembly 2 is fixed to the machine tool by bolts, and a leveling assembly 3 is rotatably fitted on the drive assembly 2. The drive assembly 2 includes a positioning element 4 and a turntable 5 fixedly connected to the positioning element 4. The leveling assembly 3 includes an internal grinding leveling element 6 and several external grinding leveling elements 7 slidably fitted on the internal grinding leveling element 6. The positioning element 4 includes an L-shaped mounting plate 401 fixedly mounted on the machine tool by bolts. A vertical plate 402 is fixed to one side of the L-shaped mounting plate 401, and a bearing is rotatably fitted on one side of the vertical plate 402. A rotating shaft 403 has a first gear 404 fixed at one end, a connecting shaft 405 fixed at the center of one end of the first gear 404, and a second gear 406 fixed at one end of the connecting shaft 405. The internal grinding and leveling component 6 includes a rectangular block 601. A rotating hole 602 that rotatably engages with the connecting shaft 405 is opened through one side of the rectangular block 601. Several guide frames 603 are fixed in a circular array on the circumferential side of the rectangular block 601. A guide rod 604 is slidably engaged inside the guide frame 603. An internal grinding stone 605 is fixed at one end of the guide rod 604 outside the guide frame 603. The guide rod 604 is slidably engaged with the external grinding and leveling component 7.

[0051] Furthermore, a mounting bracket 606 is fixed to one side of the rectangular block 601, and a first brake motor 607 is fixed to one outer side of the mounting bracket 606. A rotating cylinder 608 is fixed inside the mounting bracket 606, and a gear ring 609 that meshes with a second gear 406 is fixed to the inner wall of the rotating cylinder 608. The mounting bracket 606 and the output shaft of the first brake motor 607 are rotatably coupled. A positioning ear plate 610 is fixed to one side of the rectangular block 601 below the rotating hole 602. A U-shaped frame 407 is fixed to the top of the L-shaped mounting plate 401, and the top of the U-shaped frame 407 has a through-hole. The device includes two symmetrical positioning holes 408, with pins inserted between the positioning holes 408 and the positioning ear plate 610; the turntable component 5 includes a rotating disk 501 fixedly installed on the circumferential side of the connecting shaft 405, with several arc-shaped keyways 502 on the circumferential side of the rotating disk 501; several guide frames 603 each have a cross block 621 slidably fitted inside, and a first hinge seat 611 is fixed to one side of each of the cross blocks 621; a rectangular frame 612 is fixed to one side of each of the guide frames 603 near the top, and an I-shaped slider 613 is slidably fitted inside each of the rectangular frames 612, with each I-shaped slider 613 having a top... A second hinge seat 614 is fixed, and a number of I-shaped sliders 613 are each fixed with a third hinge seat 615 at their bottom. A first hinge arm 616 is hinged to the inside of each of the second hinge seats 614, and a second hinge arm 617 is hinged to the inside of each of the third hinge seats 615. The second hinge arm 617 is hinged to the first hinge seat 611. A toggle rod 618 is fixed to one side of each of the cross blocks 621. A limit plate 619 is fixed to one end of the toggle rod 618, and the toggle rod 618 slides in contact with the arc-shaped keyway 502. A limit groove 620 is opened through the circumference of the guide rod 604. The external grinding and leveling component 7 includes a guide ring 701 that slides on the side of the guide rod 604. A limiting block 702 that slides on the limiting groove 620 is fixed to the inner wall of the guide ring 701. A fourth hinge seat 703 that hinges to the first hinge arm 616 is fixed to the outer wall of the guide ring 701. Two symmetrical L-shaped connecting plates 704 are fixed to the outer wall of the fourth hinge seat 703. A vertical plate 705 is fixed to the top of each of the two L-shaped connecting plates 704. A T-shaped connecting top plate 706 is fixed between the two vertical plates 705. An external grinding stone 707 is fixed to the bottom of the T-shaped connecting top plate 706.

[0052] The specific application of this first embodiment is as follows:

[0053] During the use of this device, the steel pipe body 1 is hoisted to the clamping position of the processing machine tool by an external hoisting tool, so as to perform end grinding and leveling of the steel pipe body 1 before welding, and to prevent the metal burrs at the end of the steel pipe body 1 from affecting the subsequent welding process.

[0054] After the steel pipe body 1 is positioned by the clamping station on the machine tool, the rectangular block 601 is temporarily positioned and fixed by the insertion and engagement of the pins with the positioning holes 408 and the positioning ear plate 610, respectively, to prevent the rectangular block 601 from circumferentially moving when the inner grinding stone 605 and the outer grinding stone 707 are adjusted later. After the temporary positioning process of the rectangular block 601 is completed, the first brake motor 607 is started, which drives the rotating cylinder 608 fixed to its output shaft and the gear ring 609 fixed to the inner wall of the rotating cylinder 608 to rotate synchronously. Then, through the meshing action between the gear ring 609 and the second gear 406, the rotating shaft 403 on one side of the vertical plate 402, which is rotated through the bearing engagement, is driven by the first gear 404 fixed at one end of the rotating shaft 403, the connecting shaft 405 fixed at the center position of one end of the first gear 404, and the second gear fixed at one end of the connecting shaft 405. 406 rotates circumferentially in sync, causing the rotating disk 501 fixedly connected to the circumferential side of the connecting shaft 405 to rotate circumferentially in sync. When the rotating disk 501 rotates circumferentially in sync, it achieves radial movement of the cross blocks 621 within the guide frames 603 through the sliding fit between the arc-shaped keyways 502 and the actuating rods 618, and the sliding fit between the cross blocks 621 and the guide frames 603, thereby driving the guide round rods 604 fixed on the cross blocks 621 to slide linearly on the guide frames 603 in sync. This causes the inner grinding stones 605 fixed at one end of the guide round rods 604 to gradually approach the inner wall of the end of the steel pipe body 1, so that they can grind and level the metal burrs on the inner wall of the end of the steel pipe body 1 before welding, avoiding their impact on the subsequent welding process and improving the welding effect of the steel pipe body 1 in the later stage.

[0055] When the aforementioned cross blocks 621 move radially and linearly synchronously on the guide frames 603, their hinged joints, the second hinge arms 617 between the first hinge seat 611 and the third hinge seat 615, simultaneously undergo upward hinge rotation. This causes the I-shaped sliders 613, which are respectively fixed to the outer top of the third hinge seats 615, to slide inside the rectangular frames 612 in a direction away from the circumference of the guide rod 604. When the I-shaped sliders 613, which are respectively fixed to the outer top of the third hinge seats 615, slide inside the rectangular frames 612 in a direction away from the circumference of the guide rod 604, their hinged joints, the first hinge arms 616 between the second hinge seat 614 and the fourth hinge seat 703, simultaneously undergo downward hinge rotation. When the hinged rotation of 616 occurs synchronously downwards, the guide ring 701, which is slidably engaged with the circumferential side of the guide rod 604, can simultaneously slide in a straight line towards the rectangular block 601 (during the linear movement of the guide ring 701, the circumferential rotation is limited by the sliding engagement between the limiting block 702 fixed on the inner wall of the guide ring 701 and the limiting groove 620, so as to prevent the guide ring 701 from moving circumferentially during the linear sliding process). This ultimately drives the external grinding stone 707 in the entire external grinding and leveling part 7 to synchronously approach the end of the outer wall of the steel pipe body 1, so as to perform grinding and leveling treatment on the metal burrs at the end of the outer wall of the steel pipe body 1 before welding, so as to avoid affecting the subsequent welding process and improve the subsequent welding effect of the steel pipe body 1.

[0056] After the adjustment process of the inner grinding stone 605 and the outer grinding stone 707 is completed, the pin that connects the positioning hole 408 and the positioning ear plate 610 is removed. Then, the rotating shaft 403 that is connected to the vertical plate 402 rotates synchronously. The first gear 404 fixed at one end of the rotating shaft 403, the connecting shaft 405 fixed at the center of one end of the first gear 404, and the second gear 406 fixed at one end of the connecting shaft 405 rotate synchronously. This realizes the synchronous circumferential rotation between the inner grinding stone 605 and the outer grinding stone 707. In this way, the metal burrs on the inner and outer walls of the end of the steel pipe body 1 are ground and leveled before welding, so as to avoid affecting the subsequent welding process and improve the welding effect of the steel pipe body 1.

[0057] Example 2, please refer to Figure 1-12This second embodiment is an improvement on the first embodiment as follows: Specifically, two symmetrical mounting holes 409 are provided through the outer side of the L-shaped mounting plate 401 near the top, and the two mounting holes 409 are fixedly connected to the machine tool by bolts; a first rectangular groove 410 is provided through the bottom of the L-shaped mounting plate 401, and a second rectangular groove 411 is provided through the inner wall of the L-shaped mounting plate 401; a first slider 412 is slidably fitted inside the first rectangular groove 410, and a second slider 413 is slidably fitted inside the second rectangular groove 411; the top of the first slider 412 is fixed with... A fifth hinge seat 414 and a sixth hinge seat 415 are fixed to one side of the second slider 413. A lifting arm 416 is hinged between the fifth hinge seat 414 and the sixth hinge seat 415. A second brake motor 417 is fixed to the top of the sixth hinge seat 415. A third gear 418 is fixed to the output shaft of the second brake motor 417. The third gear 418 meshes with the first gear 404. A telescopic cylinder 419 is fixed to the inner side of the L-shaped mounting plate 401 below the two mounting holes 409. The telescopic end of the telescopic cylinder 419 is fixedly connected to one side of the fifth hinge seat 414.

[0058] The specific application of this second embodiment is as follows:

[0059] During the use of this device, the two mounting holes 409 that are opened through the outer side of the L-shaped mounting plate 401 near the top are first connected and fixed to the leveling and grinding station of the processing machine tool by bolts (the processing machine tool is existing technology and is not shown in the figure, so it will not be described in detail here. The fixed station on the processing machine tool is equipped with a clamping station for clamping and positioning the pressure steel pipe. At the same time, after the end leveling and grinding is performed, the welding station installed on the processing machine tool can simultaneously perform welding operations on the pressure steel pipe after the end leveling and grinding) so that the two ends of the pressure steel pipe can be ground and leveled later.

[0060] When the grinding correction structure in the device comes into contact with the end of the pressure steel pipe that needs to be ground, the telescopic cylinder 419 fixed below the two mounting holes 409 on the inner side of the L-shaped mounting plate 401 is activated, causing the fifth hinge seat 414 fixed at the telescopic end of the telescopic cylinder 419 to move. This simultaneously causes the first slider 412 fixed at the bottom of the fifth hinge seat 414 to move closer to one inner side of the L-shaped mounting plate 401 inside the first rectangular groove 410. This causes the lifting arm 416, which is hinged between the fifth hinge seat 414 and the sixth hinge seat 415, to rotate. This causes the lifting arm 416 to rotate in an upward position between the fifth hinge seat 414 and the sixth hinge seat 415, providing force for the upward sliding of the second slider 413 inside the second rectangular groove 411. This causes the second slider 413 and the sixth hinge seat 415 fixed on one side of the second slider 413 to move upward synchronously until the first slider 412 moves towards the inner side of the L-shaped mounting plate 401. After the second brake motor 417 fixed to the top of the six-hinged seat 415 and the third gear 418 fixed to the output shaft of the second brake motor 417 finally mesh with the first gear 404 (during the adjustment of the grinding and leveling structure, the meshing between the third gear 418 and the first gear 404 disappears, and the grinding and leveling structure here is the same structure as the inner grinding stone 605 and the outer grinding stone 707 in Embodiment 1), the telescopic cylinder 419 is closed, and the second brake motor 417 is started simultaneously, driving the first gear 404 to rotate, thereby providing a circumferential rotational force for the end grinding and leveling structure, which facilitates the later end face grinding and leveling operation of the pressure steel pipe (the pressure steel pipe here is the same structure as the steel pipe body 1 in Embodiment 1, and the diameter of the steel pipe body 1 shown in the figure is not the size shown in the above figure. The steel pipe body 1 shown in the figure is only used to assist the specific implementation of this application), it avoids affecting the welding process of the two pressure steel pipes later.

[0061] Obviously, the embodiments described above are merely some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention.

[0062] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0063] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein.

[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

[0065] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A leveling device for welding pressure steel pipes, comprising a machine tool and a steel pipe body (1) clamped and positioned on the machine tool, characterized in that: The machine tool is fixed with a drive assembly (2) by bolts. A leveling assembly (3) is rotatably fitted on the drive assembly (2). The drive assembly (2) includes a positioning component (4) and a turntable component (5) fixedly connected to the positioning component (4). The leveling assembly (3) includes an internal grinding leveling component (6) and several external grinding leveling components (7) that slide on the internal grinding leveling component (6). The positioning component (4) includes an L-shaped mounting plate (401) fixedly mounted on the machine tool by bolts. A vertical plate (402) is fixed on one side of the L-shaped mounting plate (401). A rotating shaft (403) is rotatably fitted on one side of the vertical plate (402) through a bearing. A first gear (404) is fixed at one end of the rotating shaft (403). A connecting shaft (405) is fixed at the center of one end of the first gear (404). A second gear (406) is fixed at one end of the connecting shaft (405). The internal grinding leveling component (6) includes a rectangular block (601). A rotating hole (602) is provided through one side of the rectangular block (601) to rotate with the connecting shaft (405). Several guide frames (603) are fixed in a circular array on the periphery of the rectangular block (601). A guide rod (604) is slidably fitted inside the guide frame (603). An internal grinding stone (605) is fixed at one end of the guide rod (604) outside the guide frame (603). The guide rod (604) is slidably fitted with the external grinding leveling component (7). A mounting bracket (606) is fixed to one side of the rectangular block (601). A first brake motor (607) is fixed to one outer side of the mounting bracket (606). The output shaft of the first brake motor (607) is located inside the mounting bracket (606) and a rotating cylinder (608) is fixed therein. A gear ring (609) that meshes with the second gear (406) is fixed to the inner wall of the rotating cylinder (608). The mounting bracket (606) and the output shaft of the first brake motor (607) are rotatably engaged. A positioning ear plate (610) is fixed on one side of the rectangular block (601) below the rotating hole (602). The L-shaped mounting plate (401) has a U-shaped frame (407) fixed inside the top, and two symmetrical positioning holes (408) are opened through the top of the U-shaped frame (407). The positioning holes (408) and the positioning ear plate (610) are connected by a pin. The turntable component (5) includes a rotating disk (501) fixedly installed on the circumferential side of the connecting shaft (405), and the circumferential side of the rotating disk (501) is provided with a plurality of arc-shaped keyways (502). Each of the guide frames (603) has a cross block (621) that slides inside, and each of the cross blocks (621) has a first hinge seat (611) fixed on one side. A rectangular frame (612) is fixed near the top on one side of each of the guide frames (603). An I-shaped slider (613) is slidably fitted inside each of the rectangular frames (612). A second hinge seat (614) is fixed at the top of each of the I-shaped sliders (613). A third hinge seat (615) is fixed at the bottom of each of the I-shaped sliders (613). A first hinge arm (616) is hinged inside each of the second hinge seats (614). A second hinge arm (617) is hinged inside each of the third hinge seats (615). The second hinge arm (617) is hinged to the first hinge seat (611); A toggle lever (618) is fixed on one side of each of the cross blocks (621), and a limit plate (619) is fixed at one end of the toggle lever (618). The toggle lever (618) slides in conjunction with the arc-shaped keyway (502). The guide rod (604) has a limiting groove (620) extending through its circumference. The external grinding and leveling component (7) includes a guide ring (701) that slides on the circumferential side of the guide rod (604), and a limiting block (702) that slides on the inner wall of the guide ring (701) and slides on the limiting groove (620). The outer wall of the guide ring (701) is fixed with a fourth hinge seat (703) that is hinged to the first hinge arm (616). The outer wall of the fourth hinge seat (703) is fixed with two symmetrical L-shaped connecting plates (704). The top of each of the two L-shaped connecting plates (704) is fixed with a vertical plate (705). A T-shaped connecting top plate (706) is fixed between the two vertical plates (705). An external grinding stone (707) is fixed at the bottom of the T-shaped connecting top plate (706).

2. The leveling device for welding pressure steel pipes according to claim 1, characterized in that: The L-shaped mounting plate (401) has two symmetrical mounting holes (409) through it near the top on its outer side. The two mounting holes (409) are fixedly connected to the machine tool by bolts. The bottom of the L-shaped mounting plate (401) is provided with a first rectangular groove (410), and the inner wall of the L-shaped mounting plate (401) is provided with a second rectangular groove (411).

3. The leveling device for welding pressure steel pipes according to claim 2, characterized in that: The first rectangular groove (410) is slidably fitted with a first slider (412), and the second rectangular groove (411) is slidably fitted with a second slider (413). The first slider (412) is fixed with a fifth hinge seat (414) at the top, and the second slider (413) is fixed with a sixth hinge seat (415) on one side. The fifth hinge seat (414) and the sixth hinge seat (415) are hinged together with a lifting arm (416). The top of the sixth hinge seat (415) is fixed with a second brake motor (417), and the output shaft of the second brake motor (417) is fixed with a third gear (418), which meshes with the first gear (404). The inner side of the L-shaped mounting plate (401) is fixed with a telescopic cylinder (419) below the two mounting holes (409), and the telescopic end of the telescopic cylinder (419) is fixedly connected to one side of the fifth hinge seat (414).

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