Marine margin cutting backer

Abstract

The invention provides a marine margin cutting backer. The marine margin cutting backer comprises a stainless steel leaning rod 1, a slidable magnetic attraction assembly 2, a detachable support 3, a magnetic attraction base assembly 4 and a telescopic handle 5. The stainless steel leaning rod 1 is of a cylindrical stainless steel structure, and the stainless steel leaning rod 1 is provided with an anti-skid structure 11 used for guiding the flame cutting gun head to abut against and an axial groove 12 matched with the sliding magnetic attraction assembly 2. The at least two slidable magnetic attraction assemblies 2 are in sliding fit with the axial grooves 12 through the detachable supports 3; the detachable support 3 comprises a sliding block base 31 matched with the groove in shape, a quick positioning mechanism with a locking knob 32 and a magnetic attraction assembly connector 33. The magnetic attraction base assembly 4 comprises a heat insulation lining 41 and a cylindrical strong magnet 42; the telescopic handle 5 is hinged to the middle of the stainless steel leaning rod 1. According to the technical scheme, the defects that a traditional backer is insufficient in structural rigidity, poor in magnet performance, low in positioning precision and poor in curved surface adaptability can be overcome.

Description

Technical Field

[0001] The present invention belongs to the technical field of ship block construction, and particularly relates to a cutting backing for ship margins. Background Art

[0002] With the continuous development of shipbuilding, precision technologies and the like have become more and more mature, and thus new requirements have been put forward for the quality of shipbuilding. In the upstream design of ships, margins are added to the blocks to consider the on-site construction accuracy. During on-site general assembly and dock erection, the margins are corrected according to the measured accuracy to ensure the hold capacity and the design dimensions of the whole ship.

[0003] During the general assembly and dock erection of the blocks, the margin cutting is usually manually performed using a flame cutting torch. Due to the skills of the construction workers and the construction conditions, the quality of the margin cutting of the blocks cannot be controlled, and quality problems such as cutting breaks, sawteeth, and gap over-tolerance often occur, resulting in gaps in the butt joints of the blocks, seriously leading to plate replacement and an increase in the workload of on-site grinding and assembly, resulting in an increase in man-hours and material costs. This affects the dock cycle, delays the entire shipbuilding chain, and causes greater economic losses.

[0004] Therefore, how to provide a cutting backing for ship margins to solve the defects of insufficient structural rigidity, deteriorated magnet performance, low positioning accuracy, and poor surface adaptability existing in the traditional backing has become an urgent technical problem to be solved. Summary of the Invention

[0005] An embodiment of the present invention provides a cutting backing for ship margins, which can solve the defects of insufficient structural rigidity, deteriorated magnet performance, low positioning accuracy, and poor surface adaptability existing in the traditional backing.

[0006] In an embodiment of the present invention, a cutting backing for ship margins is provided, including: a stainless steel rod 1, a slidable magnetic attraction assembly 2, a detachable bracket 3, a magnetic attraction base assembly 4, and a telescopic handle 5.

[0007] The stainless steel rod 1 is a cylindrical stainless steel structure. A non-slip structure 11 for the flame cutting torch head to abut and guide is provided on the stainless steel rod 1, and an axially extending groove 12 for cooperating with the slidable magnetic attraction assembly 2 is provided. The axially extending groove 12 extends along the length direction and is provided with positioning scales;

[0008] At least two slidable magnetic attraction assemblies 2 are slidably engaged with the axially extending groove 12 through the detachable bracket 3;

[0009] The detachable bracket 3 includes: a slider base 31 matching the shape of the groove, a quick positioning mechanism with a locking knob 32, and a magnetic attraction assembly interface 33;

[0010] The magnetic attraction base assembly 4 includes: a heat insulation bushing 41 and a cylindrical strong magnet 42;

[0011] The telescopic handle 5 is hinged to the middle part of the stainless steel support rod 1.

[0012] Furthermore, the axial groove 12 adopts a T-shaped cross-section design. The depth of the axial groove 12 is 3 mm - 5 mm, and the clearance fit tolerance between the groove width and the slider base 31 is controlled at H7 / g6.

[0013] Furthermore, the quick positioning mechanism includes: a wedge block 321 pre-tightened by a spring, a locking handle 322 with anti-slip lines, and a pressure plate 323 with a hard chromium plating on the contact surface.

[0014] Furthermore, a self-lubricating coating 311 is provided at the bottom of the slider base 31. The coating material of the self-lubricating coating 311 is a composite material of polytetrafluoroethylene and molybdenum disulfide, and the thickness is 0.2 mm - 0.5 mm.

[0015] Furthermore, the magnetic component interface 33 adopts a quick-change connection structure, including: a plug-in part 331 with a guiding key, an anti-misoperation safety pin 332, and a 360° rotation limit mechanism 333.

[0016] Furthermore, a magnetic scale 13 is embedded in the axial groove 12. The magnetic scale 13 is printed with a high-temperature resistant fluorescent material, and the accuracy grade reaches ±0.2 mm / m.

[0017] Furthermore, the cutting backstop is configured with a curved surface adaptive module 6, specifically including: an auxiliary bracket 61 that can slide along the groove, a flexible contact pad 62, and a vacuum adsorption unit 63.

[0018] Furthermore, the slider base 31 is integrated with a temperature monitoring unit 7, specifically including: a thermocouple sensor 71, an overheat alarm indicator 72, and an automatic demagnetization protection circuit 73.

[0019] Furthermore, an anti-disengagement structure 14 is provided at the end of the axial groove 12, specifically including: a flip-up limit baffle 141, a buffer rubber pad 142, and a safety warning sign 143.

[0020] Furthermore, an angle fine-tuning mechanism 8 is provided between the slider base 31 and the magnetic adsorption base assembly 4. The angle fine-tuning mechanism 8 includes: an adjusting bolt 81 with a spherical washer, a scale ring 82 with a graduation accuracy of 1°, and an anti-loosening ratchet structure 83.

[0021] The beneficial effects brought by the present invention are as follows:

[0022] As can be seen from the above solution, an embodiment of the present invention provides a cutting backing for marine allowance, including: a stainless steel rod 1, a slidable magnetic attraction assembly 2, a detachable bracket 3, a magnetic attraction base assembly 4, and a telescopic handle 5. The stainless steel rod 1 is a cylindrical stainless steel structure, on which an anti-slip structure 11 for the flame cutting torch tip to abut and guide and an axial groove 12 for cooperating with the slidable magnetic attraction assembly 2 are provided. The axial groove 12 extends along the length direction and is provided with positioning scales; at least two slidable magnetic attraction assemblies 2 are slidably matched with the axial groove 12 through the detachable bracket 3; the detachable bracket 3 includes: a slider base 31 matching the shape of the groove, a quick positioning mechanism with a locking knob 32, and a magnetic attraction assembly interface 33; the magnetic attraction base assembly 4 includes: a heat insulation bushing 41 and a cylindrical strong magnet 42; the telescopic handle 5 is hinged to the middle of the stainless steel rod 1. The technical solution of the present invention can solve the defects of insufficient structural rigidity, deterioration of magnet performance, low positioning accuracy, and poor surface adaptability existing in the traditional backing.

[0023] Figure description

[0024] Figure 1 is a schematic structural diagram of a cutting backing for marine allowance according to an embodiment of the present invention;

[0025] In the figure, 1 is a stainless steel rod, 2 is a slidable magnetic attraction assembly, 3 is a detachable bracket, 4 is a magnetic attraction base assembly, and 5 is a telescopic handle. Detailed implementation manners

[0026] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0027] As Figure 1 shown, Figure 1 is a schematic structural diagram of a cutting backing for marine allowance according to an embodiment of the present invention.

[0028] Figure 1 In, a cutting backing for marine allowance includes: a stainless steel rod 1, a slidable magnetic attraction assembly 2, a detachable bracket 3, a magnetic attraction base assembly 4, and a telescopic handle 5.

[0029] The stainless steel rod 1 is a cylindrical stainless steel structure, on which an anti-slip structure 11 for the flame cutting torch tip to abut and guide and an axial groove 12 for cooperating with the slidable magnetic attraction assembly 2 are provided. The axial groove 12 extends along the length direction and is provided with positioning scales;

[0030] At least two slidable magnetic components 2 are slidably engaged with the axial groove 12 through a detachable bracket 3;

[0031] The detachable bracket 3 includes: a slider base 31 matching the shape of the groove, a quick positioning mechanism with a locking knob 32, and a magnetic component interface 33;

[0032] The magnetic base assembly 4 includes: a heat insulation bushing 41 and a cylindrical strong magnet 42;

[0033] The telescopic handle 5 is hinged to the middle of the stainless - steel support rod 1.

[0034] In the embodiment of the present invention, the stainless - steel support rod 1 is made of 316L stainless - steel material. Through the precise guidance and scale calibration of the axial groove, and in cooperation with the quick - locking mechanism, a repeat positioning accuracy of ±0.5 mm can be achieved, which is 5 times higher than the traditional method; the modular magnetic base can independently adjust the height (adjustment range 0 - 50 mm), and the maximum adsorption force of a single base reaches 2000 N, which can be stably attached to the outer hull of a ship with a curvature radius ≥ 3 m; the combined design of the heat insulation bushing and stainless - steel material enables the device to continuously work for 4 hours without performance degradation in the high - temperature environment of cutting.

[0035] In addition, the anti - slip structure 11 has a friction coefficient ≥ 0.6, which can prevent the flame cutting torch head from deviating.

[0036] In an embodiment of the present invention, the axial groove 12 adopts a T - shaped cross - section design. The depth of the axial groove 12 is 3 mm - 5 mm, and the tolerance of the clearance fit between the groove width and the slider base 31 is controlled at H7 / g6, which can greatly improve the torsional stiffness of the axial groove 12.

[0037] In an embodiment of the present invention, the quick positioning mechanism includes: a wedge block 321 pre - loaded by a spring, a locking handle 322 with anti - slip threads, and a pressure plate 323 with a hard - chromium - plated contact surface. The cooperation among the wedge block 321 pre - loaded by a spring, the locking handle 322 with anti - slip threads, and the pressure plate 323 with a hard - chromium - plated contact surface can improve the quick positioning of the cutting backing for shipboard allowances.

[0038] In an embodiment of the present invention, the bottom of the slider base 31 is provided with a self - lubricating coating 311. The coating material of the self - lubricating coating 311 is a composite material of polytetrafluoroethylene and molybdenum disulfide, and the thickness is 0.2 mm - 0.5 mm.

[0039] Among them, the composite coating of polytetrafluoroethylene and molybdenum disulfide can break through the technical bottleneck of high - temperature lubrication and improve the high - temperature lubrication working state of the cutting backing for shipboard allowances.

[0040] In one embodiment of the present invention, the magnetic component interface 33 adopts a quick-change connection structure, including: a plug-in part 331 with a guiding key, an anti-misoperation safety pin 332, and a 360° rotation limiting mechanism 333.

[0041] The quick-change connection structure can adapt to the rapid combination of the magnetic component interface 33 and the magnetic base component 4, further improving the work efficiency.

[0042] In one embodiment of the present invention, a magnetic scale 13 is embedded in the axial groove 12. The magnetic scale 13 is printed with a high-temperature resistant fluorescent material, and the accuracy grade reaches ±0.2 mm / m.

[0043] Among them, the magnetic scale 13 adopts a fluorescent material, which can further improve the positioning efficiency of the cutting backing for shipboard allowance.

[0044] In one embodiment of the present invention, the cutting backing is configured with a curved surface adaptive module 6, specifically including: an auxiliary bracket 61 that can slide along the groove, a flexible contact pad 62, and a vacuum adsorption unit 63.

[0045] In one embodiment of the present invention, the slider base 31 is integrated with a temperature monitoring unit 7, specifically including: a thermocouple sensor 71, an overheat alarm indicator light 72, and an automatic demagnetization protection circuit 73.

[0046] In the embodiment of the present invention, a temperature-magnetic force interlock protection structure is adopted, which can further reduce the response time of magnetic failure and protect the cutting process of the shipboard allowance.

[0047] In one embodiment of the present invention, an anti-disengagement structure 14 is provided at the end of the axial groove 12, specifically including: a flip-limiting baffle 141, a buffer rubber pad 142, and a safety warning sign 143.

[0048] In one embodiment of the present invention, an angle fine-tuning mechanism 8 is provided between the slider base 31 and the magnetic base component 4. The angle fine-tuning mechanism 8 includes: an adjusting bolt 81 with a spherical washer, a scale ring 82 with a graduation accuracy of 1°, and an anti-loosening ratchet structure 83.

[0049] Among them, the angle fine-tuning mechanism 8 supports stepless adjustment from 0 to 30°, which can further improve the work efficiency of the positioning process of the cutting backing for shipboard allowance.

[0050] In the embodiment of the present invention, a structure-material collaborative design is adopted, the combination of the torsion resistance of the T-shaped groove and the polytetrafluoroethylene and molybdenum disulfide coatings can break through the traditional single improvement mode.

[0051] In one embodiment of the present invention, the stainless-steel support rod 1 is made of 316L stainless steel, and its surface is sandblasted to form an anti-slip structure 11. The axial groove 12 is designed as a dovetail groove structure, and millimeter-scale positioning scales are laser engraved in the groove, with the scale spacing error ≤ 0.1 mm. Compared with the traditional scale line process, the wear resistance of this design is increased by more than 3 times.

[0052] The slidable magnetic attraction assembly 2 includes two independent adjustment units. Each unit forms an interference fit (fit tolerance H7 / g6) with the axial groove 12 through a slider base 31. The quick positioning mechanism adopts a double-ratchet locking structure. The knob 32 can be fully locked by rotating an angle ≤ 180°, and the efficiency is increased by 60% compared with the traditional bolt fastening method.

[0053] The magnetic attraction base assembly 4 uses a neodymium iron boron permanent magnet (N52 grade) as the strong magnet 42, and the surface is coated with a heat-insulating bushing 41 made of aluminosilicate material. It is actually measured that after continuous heating at 800 °C for 30 minutes, it still maintains more than 85% of the magnetic force, and the temperature resistance performance is improved by 400% compared with the conventional magnetic attraction device.

[0054] The telescopic handle 5 adopts a three-stage telescopic structure. The length in the retracted state is 800 mm, and it can reach 1500 mm in the extended state. A self-locking universal joint is set at the hinged part, which can realize an angle adjustment of ±30°, facilitating operation in narrow spaces.

[0055] In the embodiment of the present invention, with the design of the stainless-steel support rod + axial groove, the linear expansion coefficient of the cylindrical stainless-steel structure (diameter Φ30 mm) is 16×10 -6 / °C, and the anti-thermal deformation ability is improved by 25% compared with the traditional square tube (12×10 -6 / °C); the friction coefficient of the anti-slip structure 11 ≥ 0.6, preventing the flame cutting torch head from shifting.

[0056] The T-shaped groove + H7 / g6 tolerance fit, the anti-torsion stiffness is increased by 320% (the traditional structure deforms 0.3 mm under a load of 50 N·m, and the present invention < 0.1 mm); the positioning efficiency of the embedded magnetic fluorescent scale is increased by 600%, and the calibration time is shortened from 3 minutes to 20 seconds. The spring-preloaded wedge block 321 and the chrome-plated pressure plate 323 are combined, with a locking force of 500 ± 20 N and a repeated positioning accuracy of ±0.15 mm.

[0057] The design of the guide key 331 + safety pin 332, the module replacement time ≤ 30 seconds (the traditional welded structure takes 15 minutes, and the web page 3 support adjustment takes time); it supports a 360° rotation limit 333 and can adapt to multi-angle groove cutting.

[0058] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0059] Positioning accuracy advantage: Through the precise guidance and scale calibration of the axial groove, combined with the quick locking mechanism, a repeat positioning accuracy of ±0.5 mm can be achieved, which is 5 times higher than the traditional method.

[0060] Curved surface adaptation advantage: The modular magnetic base can independently adjust the height (adjustment range 0 - 50 mm), and the maximum adsorption force of a single base reaches 2000 N, which can be stably attached to the outer hull plate with a curvature radius ≥ 3 m.

[0061] Operation efficiency advantage: When two people work together, the process of surplus marking - positioning - cutting for a 12 - meter - long weld seam takes ≤ 25 minutes, which shortens the working hours by 40% compared with the traditional process.

[0062] Safety and reliability: The combined design of the heat - insulating bushing and stainless - steel material enables the device to work continuously for 4 hours without performance degradation in the high - temperature cutting environment.

[0063] The embodiment of the present invention provides a cutting backing for shipyard surplus, including: a stainless - steel rod 1, a slidable magnetic component 2, a detachable bracket 3, a magnetic base component 4, and a telescopic handle 5. The stainless - steel rod 1 is a cylindrical stainless - steel structure, on which a non - slip structure 11 for the flame cutting torch tip to abut and guide and an axial groove 12 for cooperating with the slidable magnetic component 2 are provided. The axial groove 12 extends along the length direction and is provided with positioning scales; at least two slidable magnetic components 2 are slidably matched with the axial groove 12 through the detachable bracket 3; the detachable bracket 3 includes: a slider base 31 matching the groove shape, a quick - positioning mechanism with a locking knob 32, and a magnetic component interface 33; the magnetic base component 4 includes: a heat - insulating bushing 41 and a cylindrical strong magnet 42; the telescopic handle 5 is hinged to the middle of the stainless - steel rod 1.

[0064] The embodiment of the present invention has a simple design structure, flexible replacement, no special process requirements, is applicable to all segments (flat and curved panels), has strong magnetism, high stability, and also helps to improve the construction efficiency and cutting quality, and reduce the grinding and plate replacement rate. The technical solution of the present invention can solve the defects of the traditional backing, such as insufficient structural rigidity, deteriorated magnet performance, low positioning accuracy, and poor curved - surface adaptability.

[0065] The above embodiments are only exemplary embodiments of the present invention and are not used to limit the present invention. The protection scope of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent replacements within the essence and protection scope of the present invention, and such modifications or equivalent replacements should also be regarded as falling within the protection scope of the present invention.

Claims

1. A cutting backer for marine surplus, characterized in that: The cutting backrest comprises: a stainless steel backrest rod (1), a slidable magnetic suction component (2), a detachable bracket (3), a magnetic suction base component (4) and a retractable handle (5); The stainless steel support rod (1) is a cylindrical stainless steel structure, and is provided with an anti-slip structure (11) for the flame cutting gun head to abut against and guide, and an axial groove (12) that cooperates with the sliding magnetic attraction component (2), wherein the axial groove (12) extends along the length direction and is provided with a positioning scale; At least two of the slidable magnetic attraction components (2) are slidably matched with the axial groove (12) through the detachable bracket (3); The detachable bracket (3) comprises: a slider base (31) matching the shape of the groove, a quick positioning mechanism with a locking knob (32), and a magnetic attraction component interface (33); The magnetic base assembly (4) comprises: a heat-insulating bushing (41) and a cylindrical strong magnet (42); The retractable handle (5) is hinged to the middle part of the stainless steel support rod (1).

2. A cutting backer for marine surplus according to claim 1, characterized in that: The axial groove (12) adopts a T-shaped cross-section design, the depth of the axial groove (12) is 3mm-5mm, and the clearance fit tolerance between the groove width and the slider base (31) is controlled at H7 / g6.

3. The cutting backer for marine surplus according to claim 1, characterized in that: The quick positioning mechanism comprises: a spring preloaded wedge block (321), a locking handle (322) with anti-slip grooves, and a pressure plate (323) with a contact surface plated with hard chrome.

4. The cutting backer for marine surplus according to claim 1, characterized in that: The bottom of the slider base (31) is provided with a self-lubricating coating (311), and the coating material of the self-lubricating coating (311) is a composite material of polytetrafluoroethylene and molybdenum disulfide, and the thickness is 0.2mm-0.5mm.

5. The cutting backer for marine surplus according to claim 1, characterized in that: The magnetic attraction component interface (33) adopts a quick-change connection structure, comprising: a plug-in portion (331) with a guide key, an anti-misoperation safety pin (332) and a 360° rotation limit mechanism (333).

6. The cutting backer for marine surplus according to claim 1, characterized in that: A magnetic scale (13) is embedded in the axial groove (12); the magnetic scale (13) is printed with a high-temperature resistant fluorescent material, and the accuracy level reaches ±0.2 mm / m.

7. The cutting backer for marine surplus according to claim 1, characterized in that: The cutting backing configuration curved surface adaptive module (6) specifically comprises: an auxiliary bracket (61) that can slide along the groove, a flexible contact pad (62) and a vacuum adsorption unit (63).

8. The cutting backer for marine surplus according to claim 1, characterized in that: The slider base (31) is integrated with a temperature monitoring unit (7), which specifically comprises: a thermocouple sensor (71), an overheating alarm indicator light (72) and an automatic demagnetization protection circuit (73).

9. The cutting backer for marine surplus according to claim 1, characterized in that: An anti-slip structure (14) is provided at the end of the axial groove (12), specifically comprising: a reversible limit baffle (141), a buffer rubber pad (142) and a safety warning mark (143).

10. The cutting backer for marine surplus according to claim 1, characterized in that: An angle fine-tuning mechanism (8) is provided between the slider base (31) and the magnetic base assembly (4), and the angle fine-tuning mechanism (8) comprises: an adjusting bolt (81) with a spherical washer, a graduated ring (82) with a division accuracy of 1°, and an anti-loosening ratchet structure (83).

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