Hot bending device of steel pipe for ship machining

Abstract

The invention relates to the technical field of hot bending processes, and provides a hot bending device of a steel pipe for ship machining, which comprises a rack, a sealing cover, an angle adjusting mechanism, a drainage module, a feeding mechanism, a hot bending mechanism, a water cooling pipe group and an induction coil, the water cooling pipe group and the induction coil are both arranged in the sealing cover, and a water collecting shell is arranged at the bottom of the sealing cover; the angle adjusting mechanism comprises a rotating frame, a driving module, a transmission part and a center pipe sleeve, the hot bending mechanism is arranged on the surface of the rotating frame, the drainage module comprises a drainage pipe set and a waste residue cleaning part, the drainage pipe set comprises a center cylinder, an arc-shaped filter screen and a drainage pipe body, the drainage pipe body is fixedly connected with the center cylinder, and the arc-shaped filter screen is arranged above the center cylinder. And the inner wall of the water collecting shell, the center cylinder and the arc-shaped filter screen are all in sliding contact with the waste residue cleaning part, the transmission piece is in transmission connection with the waste residue cleaning part, and the problems of water vapor pollution, waste residue blockage and precise switching of complex angles coexisting in hot bending of the ship steel pipe are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hot bending process, more particularly to a hot bending device for steel pipe used in ship processing. BACKGROUND

[0002] In shipbuilding, steel pipes are used extremely widely, running through various parts of the power system, auxiliary system, ballast system, fire-fighting system, and living system. The steel pipe hot bending process includes: passing a medium-frequency current into an induction coil to heat the steel pipe, pushing the steel pipe forward at the rear end with a mechanical thrust when the temperature of the steel pipe rises to a plastic state, bending, rapidly cooling the bent part of the steel pipe with a coolant, and continuously bending the pipe out.

[0003] After searching, the present application No. CN110369573B discloses a large-diameter steel pipe bending forming device, which comprises a first clamp, a second clamp and a support seat. The first clamp and the second clamp are respectively driven to rotate by a first rocker arm and a second rocker arm. The first rocker arm drives the first clamp to bend the steel pipe in an arc shape for the first time, and the second rocker arm drives the second clamp to bend the steel pipe in an arc shape for the second time. The present application also discloses a large-diameter steel pipe bending forming process, which comprises the following steps in sequence: bending pipe pre-verification, bending pipe size calculation, steel pipe installation, first bending, second bending and bending post-correction process. The technical scheme can realize the bending of the same steel pipe in two different radii through medium-frequency hot bending. The thickness of the pipe wall at each part is kept unchanged during the bending forming process, and the steel pipe hot bending operation efficiency is improved under the condition of ensuring the bending pipe processing quality.

[0004] The existing steel pipe bending forming device still has the following defects: In shipbuilding, complex three-dimensional or multi-plane curved steel pipes will be used, such as complex inlet / outlet pipe systems connecting large equipment (main engine, boiler, large pump valve), and complex ventilation pipe lines at the top of the engine room. Since the spatial positions of the clamping module and the rocker arm module cannot be adjusted, multiple sets of clamping modules and rocker arm modules need to be coordinated to make S-bends, Z-bends and other multi-angle (spatial) curved complex steel pipes, which has the problem of low automation level of ship steel pipe hot bending processing. When high-temperature workpieces are sprayed with cold water, a large amount of high-temperature water vapor and waste such as oxidation scale and iron scraps will be generated. These vapors diffuse in the workshop, deteriorating the working environment and even possibly scalding workers. The waste in the cooling water (especially the oxidation scale peeled off at high temperature) is extremely easy to accumulate in the filter screen or pipeline, causing poor water flow, poor cooling effect, and even overheating and damage to the equipment. Cleaning these waste usually requires shutdown, disassembly of parts, and serious impact on production efficiency. SUMMARY

[0005] The purpose of the present application is to provide a hot bending device for ship processing steel pipe, which can not only control the hot bending mechanism to realize multiple bending of the workpiece by using the power of the angle adjusting mechanism, but also automatically scrape off the waste residue attached to the surface of the arc-shaped filter screen by controlling the rotation of the waste residue cleaning part, solving the problems of water vapor pollution, waste residue blockage and complex angle precise switching in ship steel pipe hot bending.

[0006] To achieve the above purpose, the present application provides the following technical scheme, a hot bending device for ship processing steel pipe, comprising a rack, a feeding mechanism, a hot bending mechanism, a water-cooled pipe group and an induction coil, further comprising: A sealing cover is fixedly arranged on the surface of the rack, the water-cooled pipe group and the induction coil are arranged in the sealing cover, a water collecting shell is arranged at the bottom of the sealing cover, and a residue discharging port is arranged at the bottom of the water collecting shell; An angle adjusting mechanism is arranged, the angle adjusting mechanism comprises a rotating frame, a driving module, a transmission member and a center pipe sleeve, the rotating frame and the transmission member are fixedly arranged on the surface of the center pipe sleeve, the driving module is in transmission connection with the transmission member, the center pipe sleeve is rotationally arranged on the surface of the rack, and the hot bending mechanism is arranged on the surface of the rotating frame; A water discharging module is arranged, the water discharging module comprises a water discharging pipe group and a waste residue cleaning part, the water discharging pipe group comprises a center cylinder, an arc-shaped filter screen and a water discharging pipe body, the water discharging pipe body is fixedly connected with the center cylinder, the arc-shaped filter screen is arranged above the center cylinder, the inner wall of the water collecting shell, the center cylinder and the arc-shaped filter screen are in sliding contact with the waste residue cleaning part, and the transmission member is in transmission connection with the waste residue cleaning part.

[0007] As a further scheme of the present application, the waste residue cleaning part comprises an end cover, a scraper and a transmission gear, a plurality of scrapers are fixedly arranged between two groups of end covers, the end cover is movably sleeved on the surface of the center cylinder, the scraper is in sliding contact with the surface of the arc-shaped filter screen, the transmission gear is fixedly arranged on the surface of the end cover, and the transmission member is in transmission connection with the transmission gear.

[0008] As a further scheme of the present application, the driving module comprises a driving motor and a worm, the transmission member comprises a worm wheel and a spur gear, the worm is in transmission connection with the worm wheel, and the transmission gear is in transmission connection with the spur gear.

[0009] As a further scheme of the present application, the hot bending mechanism comprises a clamping module and a rocker module, the clamping module is fixedly arranged at one end of the rocker module, a center shaft is fixedly arranged on the surface of the rotating frame, and the rocker module can rotate about the center shaft as an axis.

[0010] As a further scheme of the present application, an arc-shaped guide rail is arranged on the side wall of the sealing cover, a maintenance opening is arranged in the arc-shaped guide rail, and a clamp is arranged on the surface of the sealing cover.

[0011] As a further aspect of the present invention, a water vapor emission pipe is also included, which is fixedly disposed within a sealing cover.

[0012] As a further aspect of the present invention, a sealing element is also included, the sealing element comprising an arc-shaped cover and a handwheel, the arc-shaped cover being fixedly connected to the handwheel, and the arc-shaped cover being slidably disposed within an arc-shaped guide rail.

[0013] The beneficial effects of this invention are as follows: Based on the use of a sealing cover, a central cylinder, and an arc-shaped filter screen to isolate the entire hot bending area from water vapor diffusion, waste slag splashing, and wastewater filtration, the power of the angle adjustment mechanism can not only control the hot bending mechanism to achieve multiple bends (S-bends, Z-bends) of the workpiece, but also automatically scrape off the waste slag adhering to the surface of the arc-shaped filter screen by controlling the rotation of the waste slag cleaning part, and automatically discharge the waste slag from the slag discharge port, thus solving the problems of water vapor pollution, waste slag blockage, and precise switching of complex angles that coexist in the hot bending of ship steel pipes. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0015] Figure 1 This is a first perspective view of the present invention.

[0016] Figure 2 This is a second perspective view of the present invention.

[0017] Figure 3 This is a perspective view of the sealing cover according to an embodiment of the present invention.

[0018] Figure 4 This is an assembly diagram of the angle adjustment mechanism and the hot bending mechanism in an embodiment of the present invention.

[0019] Figure 5 This is a schematic diagram showing the disassembled drainage module according to an embodiment of the present invention.

[0020] Figure 6 This is a perspective view of the sealing element according to an embodiment of the present invention.

[0021] Figure 7 This is a partial enlarged view of the invention when the arc-shaped cover is opened.

[0022] Figure 8 This is a planar sectional view of the waste residue cleaning section of the present invention.

[0023] Explanation of the labels in the diagram: 1. Frame; 2. Feeding mechanism; 3. Sealing cover; 31. Arc-shaped guide rail; 32. Maintenance port; 33. Water collection shell; 34. Clamp; 35. Slag discharge port; 4. Angle adjustment mechanism; 41. Rotating frame; 42. Central tube sleeve; 43. Drive module; 44. Transmission component; 45. Central shaft; 5. Hot bending mechanism; 51. Clamping module; 52. Rocker arm module; 6. Drainage module; 61. Drainage pipe assembly; 611. Central cylinder; 612. Arc-shaped filter screen; 613. Drainage pipe body; 62. Waste slag cleaning section; 621. End cap; 622. Scraper; 623. Transmission gear; 7. Water cooling pipe assembly; 8. Water vapor exhaust pipe; 9. Sealing component; 91. Arc-shaped cover; 92. Handwheel; 10. Induction coil; 11. Workpiece. Detailed Implementation

[0024] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0025] Please see Figures 1 to 8 In one embodiment of the present invention, a hot bending device for steel pipes used in ship processing includes a frame 1, a feeding mechanism 2, a hot bending mechanism 5, a water-cooled pipe assembly 7, a steam exhaust pipe 8, and an induction coil 10, and further includes: A sealing cover 3 is fixedly installed on the surface of the frame 1. The steam exhaust pipe 8, the water-cooled pipe group 7 and the induction coil 10 are all installed inside the sealing cover 3. A water collection shell 33 is provided at the bottom of the sealing cover 3. A slag discharge port 35 is provided at the bottom of the water collection shell 33. A waste slag cylinder or waste slag cart can be installed below the slag discharge port 35. The sealing cover 3 and the water collection shell 33 are used to completely enclose the entire hot bending area (induction coil 10, water-cooled pipe group 7, workpiece 11) inside the sealing cover 3, which completely isolates the water vapor from spreading and the waste slag from splashing. The steam exhaust pipe 8 is used to guide the high-temperature water vapor generated inside the sealing cover 3 to be discharged in a directional manner. It can be connected to a heat energy recovery device (such as a waste heat boiler, preheater, etc.) for secondary utilization, reducing energy waste and avoiding pollution of the working environment. The cooled wastewater and waste slag fall into the water collection shell 33 at the bottom. Angle adjustment mechanism 4 includes a rotating frame 41, a drive module 43, a transmission component 44, and a central tube sleeve 42. The rotating frame 41 and the transmission component 44 are both fixedly mounted on the surface of the central tube sleeve 42. The drive module 43 is connected to the transmission component 44. The central tube sleeve 42 is rotatably mounted on the surface of the frame 1. The hot bending mechanism 5 is mounted on the surface of the rotating frame 41. The angle adjustment mechanism 4 is used to adjust the angle of the hot bending mechanism 5 with the central tube sleeve 42 or the workpiece 11 as the axis, thereby realizing multi-segment bending of the steel pipe (S-bend, Z-bend). The drainage module 6 includes a drainage pipe assembly 61 and a waste residue cleaning section 62. The drainage pipe assembly 61 includes a central cylinder 611, an arc-shaped filter screen 612, and a drainage pipe body 613. The drainage pipe body 613 is fixedly connected to the central cylinder 611. An arc-shaped filter screen 612 is installed above the central cylinder 611. Wastewater is filtered through the arc-shaped filter screen 612 and then enters the central cylinder 611. It is then pumped by the water pump through the drainage pipe body 613 to an external circulation treatment device for purification and recycling, thus saving water resources. At this time, waste residue is blocked on the outer surface of the arc-shaped filter screen 612. The inner wall of the water collection shell 33, the central cylinder 611, and the arc-shaped filter screen 612 are all in sliding contact with the waste residue cleaning section 62. The transmission component 44 is connected to the waste residue cleaning section 62. The angle adjustment mechanism 4 enables the power of the multi-segment bending of the steel pipe (S-bend, Z-bend) to clean the arc-shaped filter screen 612 through the waste residue cleaning section 62.

[0026] Please see Figure 5 and Figure 8 Furthermore, the waste residue cleaning unit 62 includes an end cap 621, a scraper 622, and a transmission gear 623. Several scrapers 622 are fixedly disposed between two sets of end caps 621. The end caps 621 are movably sleeved on the surface of the central cylinder 611. The scrapers 622 slide in contact with the surface of the arc-shaped filter screen 612. The transmission gear 623 is fixedly disposed on the surface of the end cap 621. The transmission component 44 is connected to the transmission gear 623 in a transmission connection.

[0027] Please see Figure 2 and Figure 4 Furthermore, the drive module 43 includes a drive motor and a worm gear, the transmission component 44 includes a worm wheel and a spur gear, the worm gear is connected to the worm wheel, and the transmission gear 623 is connected to the spur gear. The self-locking function of the worm gear and the worm wheel is used to ensure the stability of the hot bending mechanism 5 during the bending process of the steel pipe.

[0028] In this embodiment of the invention, during hot bending, the feeding mechanism 2 controls the movement of the workpiece 11 within the fixture 34 and the induction coil 10. The induction coil 10 is used to heat the workpiece 11, and the water cooling pipe assembly 7 is used to cool the workpiece 11. The water vapor generated by the water and the high-temperature workpiece 11 is discharged to a designated location through the water vapor discharge pipe 8 (for secondary utilization of water vapor or heat energy). After cooling, the wastewater enters the water collection shell 33. (Refer to the attached drawing.) Figure 7 and attached Figure 8 The sealed cavity (end cover 621, scraper 622) formed by the waste residue cleaning section 62 in the static state allows wastewater to enter the central cylinder 611 through the arc-shaped filter screen 612. The residue generated after the workpiece 11 is heated is blocked on the surface of the arc-shaped filter screen 612. Under the power of the water pump, the wastewater in the central cylinder 611 enters the circulation treatment equipment through the drain pipe 613 for wastewater purification and secondary utilization.

[0029] Please see Figure 2 and Figure 4 In another embodiment of the present invention, the hot bending mechanism 5 includes a clamping module 51 and a rocker arm module 52. The clamping module 51 is fixedly disposed at one end of the rocker arm module 52. A central shaft 45 is fixedly disposed on the surface of the rotating frame 41. The rocker arm module 52 is capable of rotating about the central shaft 45.

[0030] In this embodiment of the invention, the clamping module 51 is a hydraulic clamping mechanism that can automatically fix and release the workpiece 11. The rocker arm module 52 controls the rotation of the clamping module 51 around the central axis 45 to achieve the purpose of bending the workpiece 11. When multiple bends (S-bends, Z-bends) are required on the workpiece 11, the drive module 43 drives the central tube sleeve 42 to rotate on the frame 1 through the transmission component 44, thereby driving the entire rotating frame 41 and the hot bending mechanism 5 on it to rotate around the axis of the workpiece 11 at any required angle. After one bending is completed, the hydraulic clamping mechanism releases the workpiece 11. During this process, the rotating central tube sleeve 42 is driven by spur gears and transmission gears. The transmission connection 623 enables control of the rotation of the waste cleaning unit 62. The rotating scraper 622 slides in contact with the arc-shaped filter screen 612 to automatically clean the residue. By setting the transmission ratio of the spur gear and the transmission gear 623, the rotation speed of the waste cleaning unit 62 is increased, ensuring that the scraped waste residue is automatically discharged to the designated collection position through the slag discharge port 35 under the action of gravity or centrifugal force. The waste cleaning is automatically performed every time the angle is switched, eliminating the need for a separate drive motor and complex control for waste cleaning. The waste cleaning process is closely integrated with the core bending angle adjustment process, preventing interruptions caused by waste residue accumulation.

[0031] Please see Figure 3 and Figure 7In another embodiment of the present invention, the side wall of the sealing cover 3 is provided with an arc-shaped guide rail 31, the arc-shaped guide rail 31 is provided with a maintenance port 32, and the surface of the sealing cover 3 is provided with a clamp 34.

[0032] Please see Figure 6 and Figure 7 Furthermore, it also includes a sealing element 9, which includes an arc-shaped cover 91 and a handwheel 92. The arc-shaped cover 91 is fixedly connected to the handwheel 92, and the arc-shaped cover 91 is slidably disposed within the arc-shaped guide rail 31.

[0033] In this embodiment of the invention, the user controls the arc-shaped cover 91 to slide within the arc-shaped guide rail 31 via the handwheel 92, which is used to seal and open the maintenance port 32. This facilitates the opening of the sealing cover 3 for maintenance and repair of the equipment's internal components (water-cooled pipe assembly 7, steam exhaust pipe 8, and induction wire) without requiring complete disassembly, thus improving the maintainability of the equipment.

[0034] In summary, this application, by utilizing the sealing cover 3, the central cylinder 611, and the arc-shaped filter screen 612 to isolate the entire hot bending area from water vapor diffusion, waste slag splashing, and wastewater filtration, not only controls the hot bending mechanism 5 to achieve multiple bends (S-bends, Z-bends) of the workpiece 11, but also automatically scrapes off the waste slag adhering to the surface of the arc-shaped filter screen 612 by controlling the rotation of the waste slag cleaning part 62, and automatically discharges the waste slag from the slag discharge port 35, thus solving the problems of water vapor pollution, waste slag blockage, and complex angle precise switching that coexist in the hot bending of ship steel pipes.

[0035] While several embodiments and examples of the present invention have been described for those skilled in the art, these embodiments and examples are provided as examples and are not intended to limit the scope of the invention. These new embodiments can be implemented in various other ways, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention.

[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A hot bending device for steel pipes used in shipbuilding, comprising a frame (1), a feeding mechanism (2), a hot bending mechanism (5), a water-cooled pipe assembly (7), and an induction coil (10), characterized in that, Also includes: A sealing cover (3) is fixedly installed on the surface of the frame (1). The water cooling pipe group (7) and the induction coil (10) are both installed inside the sealing cover (3). A water collection shell (33) is provided at the bottom of the sealing cover (3). A slag discharge port (35) is provided at the bottom of the water collection shell (33). Angle adjustment mechanism (4) includes a rotating frame (41), a drive module (43), a transmission component (44), and a central tube sleeve (42). The rotating frame (41) and the transmission component (44) are both fixedly mounted on the surface of the central tube sleeve (42). The drive module (43) is connected to the transmission component (44) in a transmission manner. The central tube sleeve (42) is rotatably mounted on the surface of the frame (1). The hot bending mechanism (5) is mounted on the surface of the rotating frame (41). The drainage module (6) includes a drainage pipe assembly (61) and a waste cleaning section (62). The drainage pipe assembly (61) includes a central cylinder (611), an arc-shaped filter screen (612), and a drainage pipe body (613). The drainage pipe body (613) is fixedly connected to the central cylinder (611). An arc-shaped filter screen (612) is provided above the central cylinder (611). The inner wall of the water collection shell (33), the central cylinder (611), and the arc-shaped filter screen (612) are all in sliding contact with the waste cleaning section (62). The transmission component (44) is connected to the waste cleaning section (62) in a transmission manner.

2. The hot bending device for steel pipes used in shipbuilding according to claim 1, characterized in that, The waste residue cleaning section (62) includes an end cap (621), a scraper (622), and a transmission gear (623). Several scrapers (622) are fixedly disposed between two sets of end caps (621). The end caps (621) are movably sleeved on the surface of the central cylinder (611). The scrapers (622) slide in contact with the surface of the arc-shaped filter screen (612). The transmission gear (623) is fixedly disposed on the surface of the end caps (621). The transmission component (44) is connected to the transmission gear (623) in a transmission connection.

3. The hot bending device for steel pipes used in shipbuilding according to claim 2, characterized in that, The drive module (43) includes a drive motor and a worm gear, the transmission component (44) includes a worm wheel and a spur gear, the worm gear is connected to the worm wheel, and the transmission gear (623) is connected to the spur gear.

4. The hot bending device for steel pipes used in shipbuilding according to claim 1, characterized in that, The hot bending mechanism (5) includes a clamping module (51) and a rocker arm module (52). The clamping module (51) is fixedly disposed at one end of the rocker arm module (52). A central shaft (45) is fixedly disposed on the surface of the rotating frame (41). The rocker arm module (52) can rotate about the central shaft (45) as the axis.

5. The hot bending device for steel pipes used in shipbuilding according to claim 1, characterized in that, The sealing cover (3) has an arc-shaped guide rail (31) on its side wall, a maintenance port (32) is provided inside the arc-shaped guide rail (31), and a clamp (34) is provided on the surface of the sealing cover (3).

6. The hot bending device for steel pipes used in shipbuilding according to claim 1, characterized in that, It also includes a water vapor discharge pipe (8), which is fixedly installed inside the sealing cover (3).

7. A hot bending device for steel pipes used in shipbuilding according to claim 5, characterized in that, It also includes a sealing element (9), which includes an arc-shaped cover (91) and a handwheel (92). The arc-shaped cover (91) is fixedly connected to the handwheel (92), and the arc-shaped cover (91) is slidably disposed in the arc-shaped guide rail (31).

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