Flame cutting device

Abstract

The utility model discloses a flame cutting device, which belongs to the technical field of flame cutting and comprises a portal frame, and a cutting torch lifting mechanism is mounted on a cross beam of the portal frame. The cutting torch lifting mechanism comprises a connecting frame and a lifting frame; a flame cutting torch is mounted at the bottom of the lifting frame; a pit is formed in the foundation, a supporting frame is arranged in the pit, side protection plates are arranged on the inner sides of two side frames of the portal frame, and a top protection plate is arranged on the lower side of the beam. A cutting torch lifting mechanism protection plate is mounted at the bottom of the lifting frame; a second linear slide rail and a first rack are mounted on the upper side of the beam; a first linear slide rail is mounted on the front side of the beam; a first motor, a second sliding block and a first sliding block are installed on the connecting frame, and a first gear is installed on the first motor. The pit is arranged, thermal isolation can be achieved through the side protection plate, the top protection plate and the cutting torch lifting mechanism protection plate, the running reliability, accuracy and durability of the transmission guide component are effectively guaranteed, the cutting precision is prevented from being affected, and the clamping fault is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of flame cutting technology, specifically a flame cutting device. Background Technology

[0002] With continuous technological advancements and the sustained growth in market demand for efficient and high-performance equipment, the trend towards larger-scale equipment is becoming increasingly pronounced. Larger-scale equipment not only significantly improves production efficiency but also enables it to undertake more complex and challenging tasks in numerous fields. Simultaneously, the strategy of "replacing castings with steel" is being widely adopted in the industry. Compared to castings, steel offers numerous advantages, including superior mechanical properties, a higher strength-to-weight ratio, and greater quality stability, leading to a dramatic increase in demand for thick plates in the equipment manufacturing sector.

[0003] Thick plates play an indispensable role in the production of key components for various large-scale equipment. In the heavy machinery sector, critical structural components such as the main frames of large cranes and mining equipment rely on thick plates for manufacturing. These main frames, constructed from thick plates, must withstand enormous loads and complex stresses to ensure stable operation under harsh conditions. In the petrochemical industry, the manufacture of pressure vessels such as reaction towers and storage tanks is inseparable from thick plates. These pressure vessels must serve for extended periods in environments with high temperatures, high pressures, and highly corrosive media; the superior performance of thick plates ensures the safety and reliability of these vessels. In the construction of large bridges, thick plates are extensively used in important structural components such as main beams and bridge towers. Thick plates endow bridges with excellent load-bearing capacity and wind and earthquake resistance, ensuring the stability of bridges during long-term use.

[0004] Flame cutting, as the primary process in the manufacturing of structural components, plays a crucial role in the entire manufacturing process. During the flame cutting of thick plates, a large amount of heat needs to be released to melt the cutting area. This process generates extremely high temperatures, causing the temperature of the space above the plate to rise rapidly. The torch lifting mechanism and guide components located above the plate are highly susceptible to the effects of this high-temperature environment. The large amount of heat generated continuously radiates to the torch lifting mechanism and guide components, making them prone to deformation due to prolonged heating. This can significantly reduce the cutting accuracy of the flame cutting device, or even cause it to jam and malfunction, rendering it unable to operate normally. This not only greatly shortens the service life of the flame cutting device but also significantly increases the equipment's maintenance costs. Utility Model Content

[0005] To address the problem that traditional flame cutting devices are highly susceptible to the significant impact of high temperatures on the torch lifting mechanism and guide components in all directions when cutting thick plates, resulting in a substantial decrease in cutting accuracy and even jamming, this invention provides a flame cutting device.

[0006] This utility model is achieved through the following technical solution:

[0007] A flame cutting device includes a gantry frame that can be slidably and adjustably installed on a foundation. A torch lifting mechanism is adjustablely installed on the crossbeam of the gantry frame along its length. The torch lifting mechanism includes a connecting frame and a lifting frame that is vertically adjusted and installed with the connecting frame. A flame cutting torch is positioned and installed at the bottom of the lifting frame. A pit is opened in the foundation, and a support frame for supporting the workpiece is provided in the pit. Side protective plates are provided on the inner sides of the two side frames of the gantry frame, and a top protective plate is provided on the lower side of the crossbeam of the gantry frame. A torch lifting mechanism protective plate for the flame cutting torch to pass through is positioned and installed at the bottom of the lifting frame. A second linear slide rail and a first rack along its length are positioned and installed on the upper side of the crossbeam, and a first linear slide rail along its length is positioned and installed on the front side of the crossbeam. A first motor, a second slider that slides with the second linear slide rail, and a first slider that slides with the first linear slide rail are positioned and installed on the connecting frame. A first gear that meshes with the first rack is installed at the output end of the first motor.

[0008] A further improvement of this utility model is that the first slider includes a mounting block, the mounting block having a notch that opens backward and engages with the first linear slide rail; first rollers protruding from the notch surface are rotatably mounted on the upper and lower sides of the mounting block, and second rollers protruding from the notch surface are rotatably mounted on the side of the mounting block away from the crossbeam.

[0009] A further improvement of this utility model is that the first rack is disposed on the front side of the second linear slide rail, and the first gear is disposed on the rear side of the first rack.

[0010] Further improvements to this utility model include: two vertical third linear slide rails and a second rack are installed on the rear side of the lifting frame; several V-shaped rollers are rotatably installed on the front side of the connecting frame, each cooperating with the two third linear slide rails; a second motor is also installed on the connecting frame; and a second gear that meshes with the second rack is installed at the output end of the second motor.

[0011] A further improvement of this utility model is that one of the V-shaped rollers is an eccentric roller, and the other V-shaped roller is a concentric roller.

[0012] A further improvement of this invention is that the second gear is located on the side of the second rack away from the eccentric roller.

[0013] A further improvement of this utility model is that a mounting plate is installed on the second motor, and the mounting plate has several elongated mounting holes in the left and right directions, with bolts for connecting the connecting frame passing through the mounting holes.

[0014] A further improvement of this utility model is that the bottom front side of the lifting frame is connected and installed with the flame cutting torch through two torch clamps.

[0015] As can be seen from the above technical solutions, the beneficial effects of this utility model are:

[0016] The first motor drives the first gear to rotate. The first gear meshes with the first rack, and the second slider slides against the second linear guide rail. The sliding engagement of the first slider with the first linear guide rail allows for the overall left and right movement adjustment of the torch lifting mechanism. A pit (which can be filled with water, with the water level below the workpiece and surrounded by refractory bricks) effectively absorbs cutting heat and reduces heat radiation to the cutting equipment. Side and top protective plates provide thermal insulation for the gantry frame, and the torch lifting mechanism's protective plate provides thermal insulation for the guide mechanism, effectively ensuring the reliability, accuracy, and durability of the transmission and guiding components, preventing impact on cutting accuracy and avoiding jamming. The second slider and second linear guide rail on the upper side of the crossbeam cooperate with the first linear guide rail and first slider on the front side of the crossbeam to achieve reliable and stable guidance of the torch lifting mechanism. Attached Figure Description

[0017] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a structural schematic diagram of a specific embodiment of the present utility model.

[0019] Figure 2 This is a schematic diagram of the gantry structure according to a specific embodiment of the present utility model.

[0020] Figure 3 This is a schematic diagram showing the arrangement of the first and second linear slide rails in a specific embodiment of this utility model.

[0021] Figure 4 This is a schematic diagram of the torch lifting mechanism according to a specific embodiment of the present invention.

[0022] Figure 5 This is a schematic diagram of the third linear slide rail arrangement in a specific embodiment of this utility model.

[0023] Figure 6 This is a schematic diagram of the first slider structure according to a specific embodiment of the present invention.

[0024] In the attached diagram: 1. Foundation; 11. Pit; 12. Side protective plate; 13. Top protective plate; 2. Gantry frame; 21. Crossbeam; 3. Torch lifting mechanism; 31. Torch lifting mechanism protective plate; 32. Connecting frame; 33. Second motor; 34. Second gear; 35. Second rack; 36. Third linear slide rail; 37. Lifting frame; 38. Torch clamp; 39. Flame torch; 310. First V-shaped roller; 311. Second V-shaped roller; 312. Mounting plate; 313. Mounting hole; 41. First linear slide rail; 42. First slider; 421. Mounting block; 422. First roller; 423. Second roller; 43. First rack; 44. First gear; 45. Second linear slide rail; 46. Second slider; 47. First motor. Detailed Implementation

[0025] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0026] like Figure 1-6 As shown, this utility model discloses a flame cutting device, including a gantry frame 2 that can be slidably adjusted and mounted on a foundation 1 (the foundation 1 is provided with two opposing foundation slide rails in the front-to-back direction and a foundation rack; gantry frame sliders that cooperate with the foundation slide rails are installed on the bottom of both sides of the gantry frame 2; a gantry frame motor is installed on the bottom of one side; a gantry frame gear that meshes with the foundation rack is installed at the output end of the gantry frame motor; the gantry frame 2 is adjusted to move forward and backward as a whole by providing power through the gantry frame motor), and a crossbeam 21 of the gantry frame 2 (in the left-to-right direction). A torch lifting mechanism 3 is adjustable along its length. The torch lifting mechanism 3 includes a connecting frame 32 and a lifting frame 37 that is vertically adjustable to the connecting frame 32. A flame torch 39 is positioned at the bottom of the lifting frame 37. A pit 11 is provided on the foundation 1. A support frame for supporting the workpiece is provided in the pit 11. Side protective plates 12 are provided on the inner sides of the two side frames of the gantry frame 2. A top protective plate 13 is provided on the lower side of the crossbeam 21 of the gantry frame 2. A torch lifting mechanism protective plate 31 for the flame torch 39 to pass through is positioned at the bottom of the lifting frame 37. Figure 3As shown); a second linear slide rail 45 and a first rack 43 (in the left and right direction) are positioned and installed on the upper side of the crossbeam 21 along its length direction (left and right direction); a first linear slide rail 41 along its length direction (left and right direction) is positioned and installed on the front side of the crossbeam 21; a first motor 47, several second sliders 46 that slide with the second linear slide rail 45, and several first sliders 42 that slide with the first linear slide rail 41 are positioned and installed on the connecting frame 32; a first gear 44 that meshes with the first rack 43 is installed at the output end of the first motor 47.

[0027] The first motor 47 drives the first gear 44 to rotate. The first gear 44 meshes with the first rack 43, and the second slider 46 slides with the second linear slide rail 45. The first slider 42 slides with the first linear slide rail 41, which enables the overall left and right movement adjustment of the torch lifting mechanism 3. By setting up a pit 11 (which can be filled with water, with the water level lower than the workpiece position, and refractory bricks are placed around the pit 11), the cutting heat can be effectively absorbed, reducing the heat radiation to the cutting equipment. The side protective plate 12 and the top protective plate 13 provide thermal isolation for the gantry 2, and the torch lifting mechanism protective plate 31 provides thermal isolation for the guide mechanism (the third linear slide rail 36 and V-shaped rollers mentioned below) of the torch lifting mechanism 3, effectively ensuring the reliability, accuracy and durability of the transmission guide components, avoiding affecting the cutting accuracy and avoiding jamming failure. The second slider 46 and the second linear slide rail 45 on the upper side of the crossbeam 21 cooperate with the first linear slide rail 41 and the first slider 42 on the front side of the crossbeam 21 to achieve reliable and stable guidance of the torch lifting mechanism 3.

[0028] Furthermore, the side protective plate 12 and the top protective plate 13 have a certain gap with the gantry 2. An air pipe is installed in this gap, and the air pipe has dense air holes. Passing compressed air into the air pipe can effectively cool this space and reduce the thermal impact on the gantry 2 (transmission guide components, etc.).

[0029] The first slider 42 includes a mounting block 421, which has a U-shaped notch that opens rearward and engages with the first linear slide rail 41. First rollers 422, protruding from the notch surface (upper and lower), are rotatably mounted on the upper and lower sides of the mounting block 421. A second roller 423, protruding from the notch surface (front side), is rotatably mounted on the side of the mounting block 421 away from the crossbeam 21. The first slider 42 adopts a heavy-duty roller track structure (located on the front side of the gantry 2, receiving more heat radiation than the second slider 46), avoiding the use of rubber or plastic materials. It also has good load-bearing capacity, high temperature resistance, and strong resistance to thermal deformation, effectively ensuring equipment stability and operational accuracy.

[0030] The second slider 46, the second linear slide rail 45, the first rack 43 and the first gear 44 are located on the upper side of the crossbeam 21 and are insulated by the crossbeam 21, so a traditional linear slide rail structure can be adopted.

[0031] The first rack 43 is located on the front side of the second linear slide rail 45, and the first gear 44 is located on the rear side of the first rack 43. This ensures a tight meshing between the first slider 42 and the first rack 43, guaranteeing the reliability of the drive.

[0032] Among them, such as Figure 4-5 As shown, two vertical third linear slide rails 36 and a second rack 35 (located in the middle of the two third linear slide rails 36) are installed on the rear side of the lifting frame 37. Several V-shaped rollers (three on one side, namely the first V-shaped roller 310 and the second V-shaped roller 311) are rotatably installed on the front side of the connecting frame 32, respectively engaging with the outer rolling guides of the two third linear slide rails 36. A second motor 33 is also installed on the connecting frame 32, and a second gear 34 that meshes with the second rack 35 is installed at the output end of the second motor 33. By driving the second gear 34 to rotate through the second motor 33, and by the V-shaped rollers engaging with the third linear slide rails 36 for rolling guidance, the flame cutting torch 39 can be smoothly and precisely adjusted in height. The use of V-shaped rollers (metal) for guidance effectively avoids the presence of rubber, plastic, etc., and is resistant to high temperature and has strong resistance to thermal deformation, effectively ensuring the stability and operational accuracy of the equipment.

[0033] One V-shaped roller is an eccentric roller, and the other V-shaped roller is a concentric roller. Specifically, the first V-shaped roller 310 is a concentric roller, and the second V-shaped roller 311 is an eccentric roller. The connecting frame 32 has limiting blocks on its left and right sides at both ends, which engage with the corresponding third linear slide rail 36. The second gear 34 is located on the side of the second rack 35 away from the eccentric roller. This allows the V-shaped rollers on both sides to clamp the third linear slide rail 36, ensuring tight meshing between the second gear 34 and the second rack 35, thus guaranteeing the reliability and accuracy of the transmission guidance.

[0034] The second motor 33 is equipped with a mounting plate 312, which has several elongated mounting holes 313 in the left-right direction. Bolts that connect to the connecting bracket 32 ​​pass through the mounting holes 313. The elongated mounting holes 313 allow for flexible adjustment of the left-right position of the second gear 34, ensuring that the second gear 34 meshes tightly with the second rack 35 and guaranteeing the accuracy and reliability of the transmission.

[0035] The lifting frame 37 is connected to the flame cutting torch 39 at its bottom front side via two torch clamps 38. The torch clamps 38 are pairs of interlocking U-shaped clips connected by screws. This ensures reliable clamping of the flame cutting torch 39 and facilitates disassembly and maintenance.

[0036] In this flame cutting device, the first motor 47 drives the first gear 44 to rotate. The first gear 44 meshes with the first rack 43, and the second slider 46 slides with the second linear slide rail 45. The first slider 42 slides with the first linear slide rail 41, allowing for the overall left and right movement adjustment of the torch lifting mechanism 3. A pit 11 (which can be filled with water, with the water level below the workpiece position, and refractory bricks surrounding the pit) effectively absorbs cutting heat, reducing heat radiation to the cutting equipment. Side protective plates 12 and top protective plates 13 provide thermal insulation for the gantry 2, and the torch lifting mechanism protective plate 31 provides thermal insulation for the guide mechanism of the torch lifting mechanism 3, effectively ensuring the reliability, accuracy, and durability of the transmission and guiding components, preventing impact on cutting accuracy and avoiding jamming. The second slider 46 and second linear slide rail 45 on the upper side of the crossbeam 21 cooperate with the first linear slide rail 41 and first slider 42 on the front side of the crossbeam 21 to achieve reliable and stable guidance of the torch lifting mechanism 3.

[0037] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flame cutting device, comprising a gantry frame (2) slidably and adjustablely mounted on a foundation (1), wherein a torch lifting mechanism (3) is adjustablely mounted on the crossbeam (21) of the gantry frame (2) along its length; the torch lifting mechanism (3) comprises a connecting frame (32) and a lifting frame (37) vertically adjustable to the connecting frame (32), wherein a flame cutting torch (39) is positioned at the bottom of the lifting frame (37); characterized in that, A pit (11) is provided on the foundation (1). A support frame for supporting the workpiece is provided in the pit (11). Side protective plates (12) are provided on the inner side of the two sides of the gantry frame (2). A top protective plate (13) is provided on the lower side of the crossbeam (21) of the gantry frame (2). A torch lifting mechanism protective plate (31) for the flame torch (39) to pass through is positioned at the bottom of the lifting frame (37). A second linear slide rail (45) and a first rack (43) along its length are positioned on the upper side of the crossbeam (21). A first linear slide rail (41) along its length is positioned on the front side of the crossbeam (21). A first motor (47), a second slider (46) that slides with the second linear slide rail (45), and a first slider (42) that slides with the first linear slide rail (41) are positioned on the connecting frame (32). A first gear (44) that meshes with the first rack (43) is installed at the output end of the first motor (47).

2. The flame cutting device according to claim 1, characterized in that, The first slider (42) includes a mounting block (421), which has a notch that opens backward and engages with the first linear slide rail (41); the mounting block (421) has a first roller (422) protruding from the surface of the notch rotatably mounted on the upper and lower sides, and a second roller (423) protruding from the surface of the notch rotatably mounted on the side of the mounting block (421) away from the crossbeam (21).

3. The flame cutting device according to claim 1, characterized in that, The first rack (43) is located on the front side of the second linear slide rail (45), and the first gear (44) is located on the rear side of the first rack (43).

4. The flame cutting device according to claim 1, characterized in that, The lifting frame (37) is equipped with two vertical third linear slide rails (36) and a second rack (35) on the rear side. The connecting frame (32) is rotatably equipped with several V-shaped rollers that are respectively guided and engaged with the two third linear slide rails (36). The connecting frame (32) is also equipped with a second motor (33). The output end of the second motor (33) is equipped with a second gear (34) that meshes with the second rack (35).

5. The flame cutting device according to claim 4, characterized in that, One of the V-shaped rollers is an eccentric roller, while the other V-shaped roller is a concentric roller.

6. The flame cutting device according to claim 5, characterized in that, The second gear (34) is located on the side of the second rack (35) away from the eccentric roller.

7. The flame cutting device according to claim 4, characterized in that, The second motor (33) is equipped with a mounting plate (312), which has several elongated mounting holes (313) in the left and right directions. Bolts that connect to the connecting frame (32) are inserted into the mounting holes (313).

8. The flame cutting device according to claim 1, characterized in that, The bottom front side of the lifting frame (37) is connected to the flame torch (39) via two torch clamps (38).

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