Welding machine capable of polishing welding spots and used for high-pressure hard pipe production

Abstract

The utility model relates to the technical field of welding machines, in particular to a high-pressure hard pipe production welding machine capable of polishing welding spots, which comprises a bottom frame, two carrier rollers horizontally distributed at intervals are arranged on the bottom frame, and a lifting top plate capable of moving up and down is arranged above the two carrier rollers. Two driving rotating rollers and a welding mechanism arranged between the two driving rotating rollers are arranged at the bottom of the lifting top plate, the middle position of one driving rotating roller is rotationally sleeved with a grinding sleeve roller, and a rotating driving mechanism for driving the driving rotating rollers to rotate and a grinding driving mechanism for driving the grinding sleeve roller to rotate are arranged on the lifting top plate; the welding device is stable in welding and good in welding seam polishing effect.

Description

Technical Field

[0001] The utility model relates to the technical field of welding machines, in particular to a welding machine for producing high-pressure hard pipes capable of grinding welding points. Background Art

[0002] High-pressure pipes are mainly used to manufacture high-quality carbon structures, steel, alloy structural steel and stainless heat-resistant steel seamless steel pipes for steam boiler pipes with high pressure and above. These boiler pipes often work under high temperature and high pressure. The pipes will also be oxidized and corroded under the action of high-temperature flue gas and water vapor. Therefore, the steel pipes are required to have high lasting strength, high oxidation resistance, and good organizational stability. They are also called high-pressure hard pipes. For long-arranged high-pressure pipelines, high-pressure hard pipes need to be welded and lengthened. After searching, the Chinese patent with publication number CN214291484U discloses a steel pipe welding machine, which is used , place the two tubes between the two support rollers, then move the two upper pressing wheels downward to press the two tubes, and then drive the pressing wheels to rotate by a driving motor to rotate the steel tubes. When the weld mark moves to the bottom, it is polished by a polishing mechanism arranged between the two support rollers. However, before polishing, it needs to pass through a support roller. Due to the presence of the weld mark, when passing through the support roller, the steel tube will jump up and down when rotating, which will easily make the weld uneven, and the weld polishing effect will be poor. Therefore, a welding machine for high-pressure hard tube production with stable welding and good weld polishing effect and capable of polishing weld points is designed. Utility Model Content

[0003] 1. Technical issues to be resolved

[0004] In view of the deficiencies in the prior art, the utility model provides a welding machine for high-pressure hard pipe production capable of grinding welding points, which has stable welding and good welding seam grinding effect.

[0005] (II) Technical solution

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a welding machine for high-pressure hard pipe production capable of grinding welds, comprising a base frame, on which two rollers are arranged horizontally at intervals, a lifting top plate that can move up and down is arranged above the two rollers, two driving rollers and a welding mechanism arranged between the two driving rollers are arranged at the bottom of the lifting top plate, a grinding roller sleeve is rotatably sleeved on the middle position of one of the driving rollers, and a rotating drive mechanism for driving the driving roller to rotate and a grinding drive mechanism for driving the grinding roller to rotate are arranged on the lifting top plate.

[0007] Preferably, the grinding drive mechanism includes a grinding motor fixedly mounted on the top of the lifting top plate, the output shaft of the grinding motor and the grinding sleeve roller are matched through a grinding synchronous belt transmission, and the lifting top plate is provided with a groove for the grinding synchronous belt to pass through.

[0008] Preferably, the rotary drive mechanism includes a rotary motor fixedly mounted on the top of the lifting top plate, the output shaft of the rotary motor is matched with one end of one of the driving rollers through a rotating synchronous belt one transmission, an auxiliary shaft rotatably connected to the lifting top plate is provided above the other ends of the two driving rollers, the other ends of the two driving rollers are matched with the auxiliary shaft on the same side through a rotating synchronous belt two transmission, and the two auxiliary shafts are matched with each other through a rotating synchronous belt three transmission.

[0009] Preferably, the welding mechanism comprises a welding head, a welding opening is provided in the middle of the lifting top plate, a welding drive cylinder is fixedly connected above the welding opening via a mounting frame, and the welding head is fixedly mounted on the bottom output end of the welding drive cylinder.

[0010] Preferably, it further comprises a movable frame for supporting the lifting top plate, and lifting drive cylinders are fixedly installed on both sides of the movable frame, and the output ends of the two lifting drive cylinders are fixedly connected to the lifting top plate.

[0011] Preferably, it also includes a horizontal moving mechanism that drives the movable frame to move horizontally along the length direction of the two rollers. The horizontal moving mechanism is located below the two rollers. The horizontal moving mechanism includes a screw rod arranged on the base frame and a moving motor that drives the screw rod to rotate. The movable frame is slidably matched with the base frame and the movable frame is threadedly connected to the screw rod.

[0012] (III) Beneficial effects

[0013] Compared with the prior art, the utility model provides a welding machine for high-pressure hard pipe production that can grind welding points, which has the following beneficial effects:

[0014] The high-pressure hard pipe production welding machine capable of grinding weld points is convenient for supporting the high-pressure hard pipe by arranging two supporting rollers, and can synchronously drive the welding mechanism, the driving roller, the grinding sleeve roller, the rotating driving mechanism and the grinding driving mechanism to perform overall lifting and movement through the lifting top plate that can move up and down, so that the two driving rollers can press the high-pressure hard pipe from the top, and the driving roller can be driven to rotate by the rotating driving mechanism, and the welding mechanism arranged between the two driving rollers can be used to perform welding from the position between the two driving rollers, and as the driving rollers are driven to rotate, the weld is driven to move to the grinding sleeve roller, and the grinding sleeve roller is driven to rotate by the grinding driving mechanism to grind the weld, so that the protruding position of the weld is moved to any other supporting roller and the driving roller before the grinding is completed, thereby solving the problem that the high-pressure hard pipe jumps up and down due to the protrusion of the weld contacting the supporting roller or the driving roller before the grinding is completed, and ensuring stable welding and good grinding effect. The welding machine for producing high-pressure hard pipe has stable welding and good weld grinding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 For this utility model Figure 1 A schematic diagram of the local enlarged structure at point A in the middle;

[0017] Figure 3 It is a schematic diagram of the structure of the utility model from other perspectives as a whole;

[0018] Figure 4 This is a schematic diagram of the structure of the lifting top plate, driving roller and grinding roller of the utility model;

[0019] Figure 5 It is a schematic diagram of the structure of the driving roller, the grinding roller sleeve, the rotating driving mechanism and the grinding driving mechanism of the utility model.

[0020] Markings in the attached drawings: 1. Base frame; 2. Roller; 3. Mobile frame; 4. Screw; 5. Mobile motor; 6. Guide slot; 7. Lifting drive cylinder; 8. Lifting top plate; 9. Driving roller; 10. Grinding roller sleeve; 11. Welding head; 12. Mounting frame; 13. Welding drive cylinder; 14. Grinding motor; 15. Grinding timing belt; 16. Rotating motor; 17. Rotating timing belt one; 18. Rotating timing belt two; 19. Rotating timing belt three. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example:

[0023] See also Figure 1-5 A welding machine for high-pressure hard pipe production with grindable weld points includes a base frame 1, on which two rollers 2 are horizontally spaced, and a lifting top plate 8 that can move up and down is arranged above the two rollers 2. The bottom of the lifting top plate 8 is provided with two driving rollers 9 and a welding mechanism arranged between the two driving rollers 9, wherein a grinding roller sleeve 10 is rotatably sleeved in the middle position of one of the driving rollers 9, and a rotating driving mechanism for driving the driving roller 9 to rotate and a grinding driving mechanism for driving the grinding roller sleeve 10 to rotate are arranged on the lifting top plate 8.

[0024] Specifically, the grinding drive mechanism includes a grinding motor 14 fixedly mounted on the top of the lifting top plate 8. The output shaft of the grinding motor 14 and the grinding roller sleeve 10 are matched through the grinding timing belt 15. The lifting top plate 8 is provided with a groove for the grinding timing belt 15 to pass through. The grinding motor 14 is started to rotate the output shaft of the grinding motor 14. The grinding roller sleeve 10 is driven to rotate through the transmission cooperation of the grinding timing belt 15, thereby driving the grinding roller sleeve 10 to grind the welding point.

[0025] Specifically, the rotary drive mechanism includes a rotary motor 16 fixedly mounted on the top of the lifting top plate 8, the output shaft of the rotary motor 16 is matched with one end of one of the driving rollers 9 through a rotating synchronous belt 17, and an auxiliary shaft rotatably connected to the lifting top plate 8 is arranged above the other ends of the two driving rollers 9, the other ends of the two driving rollers 9 are matched with the auxiliary shaft on the same side through a rotating synchronous belt 2 18, and the two auxiliary shafts are matched with each other through a rotating synchronous belt 3 19. The rotary motor 16 is started, and one of the driving rollers 9 is driven to rotate through the transmission of the rotating synchronous belt 17, and the other driving roller 9 is driven to rotate synchronously through two auxiliary shafts, two rotating synchronous belts 2 18 and a rotating synchronous belt 3 19, so as to drive the other driving roller 9 to rotate synchronously, and then the two high-pressure hard pipes are synchronously driven to rotate through the two driving rollers 9, so as to ensure that the welding mechanism continuously performs a complete circumferential weld.

[0026] Specifically, the welding mechanism includes a welding head 11, a welding port is opened in the middle position of the lifting top plate 8, a welding drive cylinder 13 is fixedly connected above the welding port through a mounting frame 12, and the welding head 11 is fixedly installed at the bottom output end of the welding drive cylinder 13. Through the welding drive cylinder 13, the welding head 11 can be easily extended from the welding port to weld the joint.

[0027] Specifically, it also includes a mobile frame 3 for supporting the lifting top plate 8. Lifting drive cylinders 7 are fixedly installed on both sides of the mobile frame 3. The output ends of the two lifting drive cylinders 7 are fixedly connected to the lifting top plate 8. The mobile frame 3 is convenient for supporting the lifting top plate 8. The two lifting drive cylinders 7 are convenient for lifting and lowering the lifting top plate 8. Furthermore, guide grooves that cooperate with the lifting top plate 8 to guide and slide are provided on both sides of the mobile frame 3. The guide grooves are convenient for guiding the lifting top plate 8, thereby increasing the stability of the lifting and lowering movement on the mobile frame 3.

[0028] Specifically, it also includes a horizontal moving mechanism that drives the mobile frame 3 to move horizontally along the length direction of the two rollers 2. The horizontal moving mechanism is located below the two rollers 2. The horizontal moving mechanism includes a screw rod 4 arranged on the base frame 1 and a moving motor 5 that drives the screw rod 4 to rotate. The mobile frame 3 slides with the base frame 1 and the mobile frame 3 is threadedly connected with the screw rod 4. Start the moving motor 5 to make the output shaft of the moving motor 5 rotate clockwise or counterclockwise, which is convenient for driving the screw rod 4 to rotate clockwise or counterclockwise, and then drive the mobile frame 3 to move horizontally left and right along the length direction of the two rollers 2, and then drive the welding mechanism and the two driving rollers 9 to move to the butt joint of the two high-pressure rigid pipes. The welding mechanism can be aligned with the butt joint up and down without moving the two high-pressure rigid pipes, thereby further improving the welding efficiency. Furthermore, guide slots 6 that slide and cooperate with the guide of the mobile frame 3 are provided on both sides of the base frame 1. The two guide slots 6 are convenient for guiding the mobile frame 3.

[0029] When in use, align the two high-pressure rigid pipes and place them on the two rollers 2, and make the butt joint position directly below the welding mechanism, then lower the lifting top plate 8, so that the two driving rollers 9 press the two high-pressure rigid pipes from the top, and then weld the butt joint through the welding mechanism, and at the same time start the rotating drive mechanism to drive the two driving rollers 9 to rotate, and under the cooperation of the two rollers 2, the two high-pressure rigid pipes are rotated to continuously weld the butt joint, and at the same time, when the weld protrusion moves to the grinding sleeve roller 10, start the grinding drive mechanism to drive the grinding sleeve roller 10 to rotate, so as to grind the raised position of the weld point, until a circular weld is completed and the grinding of the weld protrusion is completed.

[0030] It should be noted that the phrases "one embodiment", "an embodiment", "an exemplary embodiment", "some embodiments", etc. mentioned in the specification indicate that the described embodiments may include certain features, structures or characteristics, but not every embodiment may include the certain features, structures or characteristics. In addition, such phrases do not necessarily refer to the same embodiment. In addition, when describing certain features, structures or characteristics in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such features, structures or characteristics in conjunction with other embodiments, whether explicitly or not explicitly described.

[0031] It should be easily understood that “on,” “above,” and “over” in the present disclosure should be interpreted in the broadest manner, so that “on” not only means “directly on something,” but also includes the meaning of “on something” with intervening features or layers therebetween, and “above” or “over” not only includes the meaning of “above” or “over,” but also may include the meaning of “above” or “over something” with no intervening features or layers therebetween (i.e., directly on something).

[0032] In addition, spatially relative terms, such as "below," "below," "beneath," "above," "above," etc., may be used herein for ease of description to describe the relationship of one element or feature relative to other elements or features as shown in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein may likewise be interpreted accordingly.

[0033] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A welding machine for high-pressure hard pipe production capable of grinding weld points, characterized in that: The invention comprises a base frame (1), on which two rollers (2) are arranged horizontally and spaced apart, a lifting top plate (8) which can move up and down is arranged above the two rollers (2), two driving rollers (9) and a welding mechanism arranged between the two driving rollers (9) are arranged at the bottom of the lifting top plate (8), a grinding roller (10) is rotatably sleeved on the middle position of one of the driving rollers (9), and a rotating driving mechanism for driving the driving roller (9) to rotate and a grinding driving mechanism for driving the grinding roller (10) to rotate are arranged on the lifting top plate (8).

2. The welding machine for high-pressure hard pipe production with grindable weld points according to claim 1, characterized in that: The grinding drive mechanism comprises a grinding motor (14) fixedly mounted on the top of a lifting top plate (8); an output shaft of the grinding motor (14) and a grinding sleeve roller (10) are coupled via a grinding synchronous belt (15); and a groove for the grinding synchronous belt (15) to pass through is provided on the lifting top plate (8).

3. The welding machine for high-pressure hard pipe production with grindable weld points according to claim 2, characterized in that: The rotary drive mechanism comprises a rotary motor (16) fixedly mounted on the top of the lifting top plate (8); the output shaft of the rotary motor (16) is coupled with one end of one of the driving rollers (9) via a rotating synchronous belt one (17); an auxiliary shaft rotatably connected to the lifting top plate (8) is arranged above the other ends of the two driving rollers (9); the other ends of the two driving rollers (9) are coupled with the auxiliary shaft on the same side via a rotating synchronous belt two (18); and the two auxiliary shafts are coupled with each other via a rotating synchronous belt three (19).

4. The welding machine for high-pressure hard pipe production with grindable weld points according to claim 3, characterized in that: The welding mechanism comprises a welding head (11), a welding opening is provided in the middle of the lifting top plate (8), a welding drive cylinder (13) is fixedly connected above the welding opening via a mounting frame (12), and the welding head (11) is fixedly mounted at the bottom output end of the welding drive cylinder (13).

5. The welding machine for high-pressure hard pipe production with grindable weld points according to claim 4, characterized in that: It also includes a moving frame (3) for supporting a lifting top plate (8), wherein lifting drive cylinders (7) are fixedly mounted on both sides of the moving frame (3), and the output ends of the two lifting drive cylinders (7) are fixedly connected to the lifting top plate (8).

6. The welding machine for high-pressure hard pipe production with grindable weld points according to claim 5, characterized in that: It also includes a horizontal moving mechanism for driving the moving frame (3) to move horizontally along the length direction of the two rollers (2), the horizontal moving mechanism is located below the two rollers (2), the horizontal moving mechanism includes a screw rod (4) arranged on the base frame (1) and a moving motor (5) for driving the screw rod (4) to rotate, the moving frame (3) and the base frame (1) are slidably matched, and the moving frame (3) and the screw rod (4) are threadedly connected.

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