Boiler pipe boring device

Abstract

The utility model relates to the field of machining, in particular to a boiler pipe boring device. Comprising a bottom plate, a sliding seat, a clamping piece, a heightening frame, a supporting air cylinder, a working plate, a roller set, a boring piece and other key components. The bottom plate is connected with a sliding seat through a lead screw nut mechanism and a limiting structure, a clamping piece capable of being driven by a motor to rotate is rotationally installed on the sliding seat, and the clamping piece stably clamps a boiler pipe through a wheel disc and a clamping block structure. A supporting air cylinder on the heightening frame supports the working plate, a roller set on the working plate adjusts and supports the boiler pipe through a lead screw, the boring piece on the front side of the working plate is composed of a front edge frame, an air cylinder, a cutter and the like, the end face of the boiler pipe can be accurately bored, and a cooling device is arranged. The device has the advantages of being high in precision, high in efficiency, high in adaptability, stable and reliable in machining process and the like, effectively solves the problems that traditional boiler pipe boring equipment is low in precision, poor in efficiency, insufficient in adaptability, poor in machining stability and the like, and is suitable for machining and production of boiler pipes of various specifications.

Description

Technical Field

[0001] This utility model relates to the field of machining, and in particular to a device for boring boiler tubes. Background Technology

[0002] In the field of industrial boiler manufacturing and maintenance, boiler tubes are key components, and their quality and performance directly affect the overall operating efficiency and safety of the boiler. With the continuous development of industrial technology, the precision requirements for boiler tubes are becoming increasingly stringent.

[0003] Traditional boiler tube machining methods have several limitations in the boring stage. Early boring operations relied heavily on manual operation with simple boring tools, a method that was inefficient and struggled to guarantee dimensional accuracy and cylindricity. The worker's skill level significantly impacted machining quality, and prolonged, high-intensity manual operation easily led to fatigue, further reducing the stability of machining accuracy. Subsequent semi-automated boring equipment, while improving efficiency to some extent, still suffered from poor adaptability to boiler tubes of varying diameters and lengths. When faced with batch production tasks involving diverse tube diameters, frequent adjustments to equipment parameters were often necessary, increasing downtime and production costs. Traditional boring devices also lacked precise control of cutting forces during the boring process, easily causing boiler tube deformation, especially with thin-walled tubes. Furthermore, poor chip removal during machining affected tool life and surface finish, resulting in a surface roughness that failed to meet modern industrial standards. This negatively impacted the boiler tube's heat transfer and corrosion resistance, failing to meet the demands of efficient, energy-saving, and safe modern industrial boiler systems. Utility Model Content

[0004] A boiler tube boring device includes a boring tool and a cooling device. It is characterized by comprising a base plate, a sliding seat slidably connected to the base plate, a clamping component rotatably mounted on the sliding seat, a heightening frame fixedly connected to the base plate, a support cylinder positioned above the heightening frame, a working plate fixedly mounted at the front end of the telescopic rod of the support cylinder, a roller assembly positioned above the working plate, and a boring component positioned on the front side of the working plate. The clamping component is used to clamp the boiler tube, the roller assembly is used to support the boiler tube, and the boring component is used to bore the end face of the boiler tube.

[0005] Preferably, a baffle is provided above the base plate, and a first lead screw is rotatably connected to the baffle. The other end of the first lead screw is fixedly connected to a first motor and its reduction gear. The first motor and its reduction gear are fixedly installed on the base plate. The baffle is located in front of the sliding seat. The sliding seat is provided with a threaded hole that penetrates the sliding seat and is threadedly connected to the first lead screw.

[0006] Preferably, the base plate is provided with limit keys on the left and right sides above, and the sliding seat is provided with limit grooves on the left and right sides. The sliding connection between the base plate and the sliding seat is completed by the sliding cooperation of the limit keys and the limit grooves.

[0007] Preferably, the work plate is provided with a second lead screw, and both ends of the second lead screw are provided with manual cranks. The roller assembly includes a left roller frame and a right roller frame, both of which are slidably connected to the work plate. The left roller and the right roller are slidably connected to the work plate. The left roller frame and the right roller frame are provided with through threaded holes. The second lead screw is threadedly connected to the left roller and the right roller. The left roller frame and the right roller frame are both provided with rollers.

[0008] Preferably, the riser is located in front of the baffle, and the number of supporting cylinders is at least four.

[0009] Preferably, the boring part includes a front edge frame, which is fixedly connected to the front end of the work plate. A heightening cylinder is fixedly installed on the front edge frame. A support plate is fixedly connected to the front end of the telescopic rod on the heightening cylinder. A telescopic cylinder is fixedly connected to the support plate. A boring tool and a cooling device are provided at the front end of the telescopic cylinder.

[0010] Preferably, the clamping component includes a clamping cylinder, which is hollow and open at one end. A clamping cover is fixedly connected to the opening of the clamping cylinder. A wheel is rotatably installed inside the clamping cylinder, and the wheel is provided with 6 second limiting grooves. A second motor and its clutch device are provided inside the clamping cylinder, and the second motor and its clutch device are the same as the drive wheel.

[0011] Preferably, the clamping cover has six sliding grooves at its rear, and the clamping cover has a through opening; the through opening of the clamping cover is surrounded by six sliding grooves, which are evenly distributed and interconnected to form a hexagonal groove; each sliding groove is slidably connected to a clamping block, and each clamping block has a second limiting key at its rear end, which is slidably connected to the corresponding second limiting groove.

[0012] Preferably, the clamping cylinder is rotatably mounted on the sliding seat, and a third motor is provided behind the sliding seat, which coaxially drives the clamping cylinder.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. The boring tool of this utility model is ingeniously designed. Through the combination of the leading edge support, the heightening cylinder, and the telescopic cylinder, the position and feed rate of the boring tool can be precisely controlled. For example, the telescopic cylinder can realize the small and precise forward movement of the boring tool, so that the machining accuracy reaches a high level, meeting the strict dimensional and shape accuracy requirements for boring the end face of boiler tubes. This ensures that the machined boiler tubes can accurately cooperate with other components during installation and use, thereby improving the overall operational stability and reliability of the boiler.

[0015] 2. The unique design of the clamping component of this utility model can not only firmly clamp boiler tubes of different outer diameters, but also provide a stable clamping force for boiler tubes of different wall thicknesses and materials through the structure of the wheel and clamping block, ensuring that the boiler tubes will not shift or shake during the boring process, thus guaranteeing the stability and consistency of the processing quality.

[0016] 3. The left and right roller frames of this utility model can flexibly adjust the spacing through the second lead screw and manual crank, which can adapt to the support needs of boiler tubes of various diameters, thus broadening the application range of the equipment. For the production or maintenance of industrial boiler tubes of different models and specifications, there is no need to frequently replace equipment or carry out complex modifications.

[0017] 4. The unique design of the clamping component of this utility model can not only firmly clamp boiler tubes of different outer diameters, but also provide a stable clamping force for boiler tubes of different wall thicknesses and materials through the structure of the wheel and clamping block, ensuring that the boiler tubes will not shift or shake during the boring process, thus guaranteeing the stability and consistency of the processing quality.

[0018] 5. The limiting key and limiting groove structure between the base plate and the sliding seat of this utility model ensures the smoothness and accuracy of the sliding seat movement, prevents boring errors or other unexpected situations caused by the offset of the sliding seat during the processing, and improves the reliability of the processing process.

[0019] 6. The cooling device of this utility model can effectively reduce the heat generated during the boring process, avoid problems such as accelerated tool wear and changes in the properties of boiler tube materials caused by high temperature, extend the service life of the tool, and at the same time ensure that the processing quality of boiler tubes is not affected by heat, thereby improving the product qualification rate and quality stability. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a boiler tube boring device according to the present invention.

[0021] Figure 2 This is an exploded view of a clamping component for a boiler tube boring device according to this utility model.

[0022] Figure 3 This is a schematic diagram of the clamping component of a boiler tube boring device according to the present invention.

[0023] In the diagram: 1. Boring tool; 2. Cooling device; 3. Base plate; 4. Sliding seat; 5. Clamping component; 51. Clamping cylinder; 52. Clamping cover; 53. Wheel; 54. Second limiting groove; 55. Second motor and its clutch device; 56. Sliding groove; 57. Clamping block; 58. Second limiting key; 6. Heightening frame; 7. Support cylinder; 8. Boring component; 81. Front leading frame; 82. Heightening cylinder; 83. Support plate; 84. Telescopic cylinder; 9. Roller assembly; 91. Left roller frame; 92. Right roller frame; 10. Working plate; 11. Baffle; 12. First lead screw; 13. First motor; 14. First limiting key; 15. First limiting groove; 16. Second lead screw; 17. Manual crank; 18. Third motor. Detailed Implementation

[0024] A boiler tube boring device includes a boring tool 1 and a cooling device 2. It is characterized by a base plate 3, a sliding seat 4 slidably connected to the base plate 3, a clamping component 5 rotatably mounted on the sliding seat 4, a heightening frame 6 fixedly connected to the base plate 3, four supporting cylinders 7 arranged above the heightening frame 6, a working plate 10 fixedly mounted at the front end of the telescopic rod of the supporting cylinders 7, a roller assembly 9 arranged above the working plate 10, and a boring component 8 arranged on the front side of the working plate 10. The clamping component 5 is used to clamp the boiler tube, the roller assembly 9 is used to support the boiler tube, and the boring component 8 is used to bore the end face of the boiler tube.

[0025] A baffle 11 is provided above the base plate 3. A first lead screw 12 is rotatably connected to the baffle 11. A first motor 13 and its reduction gear are fixedly connected to the other end of the first lead screw 12. The first motor 13 and its reduction gear are fixedly installed on the base plate 3. The baffle 11 is located in front of the sliding seat 4. The sliding seat 4 has a threaded hole that penetrates through the sliding seat 4 and is threadedly connected to the first lead screw 12. Limit keys are provided on the left and right sides of the base plate 3, and limit grooves are provided on the left and right sides of the sliding seat 4. The sliding connection between the base plate 3 and the sliding seat 4 is achieved by the sliding engagement of the limit keys and the limit grooves.

[0026] A second lead screw 16 is provided on the work plate 10, and a manual crank 17 is provided at both ends of the second lead screw 16. The roller assembly 9 includes a left roller frame 91 and a right roller frame 92, both of which are slidably connected to the work plate 10. The left roller and the right roller are slidably connected to the work plate 10. Both the left roller frame 91 and the right roller frame 92 are provided with through threaded holes. The second lead screw 16 is threadedly connected to the left roller frame 91 and the right roller frame 92. Both the left roller frame 91 and the right roller frame 92 are provided with rollers. The lifting frame 6 is located in front of the baffle 11. The boring part 8 includes a front edge frame 81, which is fixedly connected to the front end of the work plate. A lifting cylinder 82 is fixedly installed on the front edge frame 81. The front end of the telescopic rod on the lifting cylinder 82 is fixedly connected to a support plate 83. A telescopic cylinder 84 is fixedly connected to the support plate 83. A boring tool 1 and a cooling device 2 are provided at the front end of the telescopic cylinder 84.

[0027] The clamping component includes a clamping cylinder 51, which is hollow and open at one end. A clamping cover 52 is fixedly connected to the opening of the clamping cylinder 51. A wheel 53 is rotatably mounted inside the clamping cylinder 51, and the wheel 53 has six second limiting grooves 54. A second motor and its clutch device 55 are installed inside the clamping cylinder 51, and the second motor and its clutch device 55 drive the wheel 53. A sliding groove 56 is provided behind the clamping cover 52, and there are six sliding grooves 56. The clamping cover 52 has a through opening. The through opening of the clamping cover 52 is surrounded by six sliding grooves 56. The six sliding grooves 56 are evenly distributed and interconnected, forming a hexagonal groove. Each sliding groove 56 is slidably connected to a clamping block 57. Each clamping block 57 has a second limiting key 58 at its rear end, and the second limiting key 58 is slidably connected to the corresponding second limiting groove 54. The clamping cylinder 51 is rotatably mounted on the sliding seat 4. A third motor 18 is provided behind the sliding seat 4, and the third motor 18 coaxially drives the clamping cylinder 51.

[0028] In use, the boiler tube to be bored is hoisted to the vicinity of the device. The third motor 18 is operated to drive the clamping cylinder 51 to rotate, so that the clamping member 5 is in an angle position that facilitates the placement of the boiler tube. Then, one end of the boiler tube is inserted into the through hole of the clamping cover 52. During the insertion process, care should be taken not to touch the surface of the wheel 53 to avoid damaging the wheel or affecting the accuracy of subsequent clamping actions. Then, the second motor and its clutch device 55 are started. The second motor and its clutch device 55 drive the wheel 53 to rotate. Since the six second limiting grooves 54 on the wheel 53 slide in cooperation with the second limiting keys 58 at the rear end of each clamping block 57, the rotation of the wheel 53 will drive the six clamping blocks 57 to slide synchronously in the six sliding grooves 56 of the clamping cover 52. The six evenly distributed and interconnected sliding grooves 56, which form a hexagonal groove, guide the clamping blocks 57 to converge from the periphery to the center, thereby achieving a stable clamping of the boiler tube. During this process, the uniform force applied by the six clamping blocks 57 effectively prevents damage to the boiler tube surface due to uneven clamping force, ensuring that it will not loosen or shift during subsequent processing.

[0029] Subsequently, based on the length of the boiler tube and the processing position requirements, the first motor 13 and its reduction gear are started. The first motor 13 drives the first lead screw 12 to rotate. Since the sliding seat 4 is threadedly connected to the first lead screw 12 through its threaded hole, and the base plate 3 and the sliding seat 4 are slidingly engaged by the limit key and the limit groove to ensure smooth sliding, the rotation of the first lead screw 12 will drive the sliding seat 4 to move back and forth along the base plate 3, thereby moving the clamped boiler tube to the appropriate axial processing position. At the same time, by controlling the extension and retraction of the four support cylinders 7 on the lifting frame 6, the height of the working plate 10 is adjusted so that the roller assembly 9 on it can just contact the boiler tube, providing good support and further ensuring the accurate and stable position of the boiler tube in space. Next, the operator can rotate the hand cranks 17 at both ends of the second lead screw 16 on the work plate 10. The rotation of the second lead screw 16 will cause the left roller frame 91 and the right roller frame 92, which are threaded to it, to slide relative to each other on the work plate 10. This allows the spacing of the roller assembly 9 to be adjusted according to the diameter of the boiler tube, so as to achieve precise fitting and support for the boiler tube and ensure that it remains stable in the horizontal direction, laying a solid foundation for boring.

[0030] After completing the above preparations and adjustments, the boring process begins. The height of the support plate 83 can be adjusted by the telescopic movement of the height-increasing cylinder 82 fixed on the front support 81, thereby adjusting the height of the telescopic cylinder 84, the boring tool 1 at its front end, and the cooling device 2, aligning them with the end face of the boiler tube to be machined. Then, the telescopic cylinder 84 is activated, pushing the boring tool 1 slowly towards the end face of the boiler tube. Simultaneously, the cooling device 2 starts working, promptly removing the heat generated during boring to prevent the boring tool 1 from overheating and causing accelerated wear, affecting machining accuracy. During the boring process, if boring is required at different locations on the end face of the boiler tube, the third motor 18 can again drive the clamping cylinder 51 to rotate the boiler tube, coordinating with the feed action of the boring tool 1 to achieve precise boring of the entire end face from all directions, ensuring that the machined holes meet accuracy requirements and process standards. After the boring operation on the end face of the boiler tube is completed, first stop the operation of the telescopic cylinder 84, the heightening cylinder 82, and other related power components. Then, operate the second motor and its clutch device 55 to reverse, causing the clamping block 57 to release its grip on the boiler tube. The machined boiler tube is then removed from the device, completing the entire machining process. Afterwards, a simple cleaning and inspection of the various components of the device can be performed to prepare for the next boring operation.

Claims

1. A boiler tube boring device, comprising a boring tool (1) and a cooling device (2), characterized in that, Includes a base plate (3), on which a sliding seat (4) is slidably connected, and a clamping component (5) is rotatably mounted on the sliding seat (4). A heightening frame (6) is fixedly connected to the base plate (3), and a support cylinder (7) is provided above the heightening frame (6). A working plate (10) is fixedly installed at the front end of the telescopic rod of the support cylinder (7). A roller assembly (9) is provided above the working plate (10), and a boring component (8) is provided on the front side of the working plate (10). The clamping component (5) is used to clamp the boiler tube, the roller assembly (9) is used to support the boiler tube, and the boring component (8) is used to bore the end face of the boiler tube.

2. The boiler tube boring device according to claim 1, characterized in that, A baffle (11) is provided above the base plate (3). A first lead screw (12) is rotatably connected to the baffle (11). A first motor (13) and its speed reduction device are fixedly connected to the other end of the first lead screw (12). The first motor (13) and its speed reduction device are fixedly installed on the base plate (3). The baffle (11) is located in front of the sliding seat (4). The sliding seat (4) is provided with a threaded hole. The threaded hole penetrates the sliding seat (4). The threaded hole of the sliding seat (4) is threadedly connected to the first lead screw (12).

3. The boiler tube boring device according to claim 1, characterized in that, The base plate (3) is provided with limit keys on the left and right sides above, and the sliding seat (4) is provided with limit grooves on the left and right sides. The sliding connection between the base plate (3) and the sliding seat (4) is completed by the sliding cooperation of the limit keys and the limit grooves.

4. The boiler tube boring device according to claim 1, characterized in that, The working plate (10) is provided with a second lead screw (16), and both ends of the second lead screw (16) are provided with a manual crank (17). The roller assembly (9) includes a left roller frame (91) and a right roller frame (92), both of which are slidably connected to the working plate (10). The left roller and the right roller are slidably connected to the working plate (10). The left roller frame (91) and the right roller frame (92) are provided with through threaded holes. The second lead screw (16) is threadedly connected to the left roller and the right roller. The left roller frame (91) and the right roller frame (92) are both provided with rollers.

5. A boiler tube boring device according to claim 1, characterized in that, The riser (6) is located in front of the baffle (11), and the number of the support cylinders (7) is at least four.

6. A boiler tube boring device according to claim 1, characterized in that, The boring part (8) includes a front edge frame (81), which is fixedly connected to the front end of the working plate. A height-increasing cylinder (82) is fixedly installed on the front edge frame (81). A support plate (83) is fixedly connected to the front end of the telescopic rod on the height-increasing cylinder (82). A telescopic cylinder (84) is fixedly connected to the support plate (83). A boring tool (1) and a cooling device (2) are provided at the front end of the telescopic cylinder (84).

7. A boiler tube boring device according to claim 1, characterized in that, The clamping component includes a clamping cylinder (51), which is hollow and has an open end. A clamping cover (52) is fixedly connected to the opening of the clamping cylinder (51). A wheel (53) is rotatably installed inside the clamping cylinder (51). The wheel (53) is provided with 6 second limiting grooves (54). A second motor and its clutch device (55) are provided inside the clamping cylinder (51). The second motor and its clutch device (55) are the same as the drive wheel (53).

8. A boiler tube boring device according to claim 7, characterized in that, The clamping cover (52) is provided with a sliding groove (56) at the rear. There are 6 sliding grooves (56). The clamping cover (52) is provided with a through opening. The through opening of the clamping cover (52) is surrounded by 6 sliding grooves (56). The 6 sliding grooves (56) are evenly distributed and interconnected to form a hexagonal groove. Each sliding groove (56) is slidably connected to a clamping block (57). Each clamping block (57) is provided with a second limiting key (58) at the rear end. The second limiting key (58) is slidably connected to the corresponding second limiting groove (54).

9. A boiler tube boring device according to claim 7, characterized in that, The clamping cylinder (51) is rotatably mounted on the sliding seat (4), and a third motor (18) is provided behind the sliding seat (4). The third motor (18) coaxially drives the clamping cylinder (51).

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