A pipe gang saw guide device

Abstract

The present invention relates to the technical field of guide devices, specifically a guide device for a pipe gang saw. It comprises a hot-rolled pipe, a fixed bevel gear ring, a front guide frame, a rear guide frame and an electrically rotatable rotary frame. Three guide modules are installed on the front guide frame and the rear guide frame. Six slides are slidably installed on the rotary frame. The front guide frame is provided with a radial adjustment system for synchronously changing the positions of the six slides on the rotary frame. A rotating shaft is rotatably installed in each of the six slides. The rotating shaft revolves around the axis of the fixed bevel gear ring and rotates around its own axis at the same time. Three slides are connected to a cooling system, and the other three slides are connected to an orthopedic system. The cooling system and the orthopedic system are both driven by the rotating shafts on the corresponding slides. The beneficial effect of the present invention is that the present invention innovatively integrates the guide module, the radial adjustment system, the cooling system and the orthopedic system through an electrically rotatable rotary frame and a microcontroller to form a closed-loop linkage control mechanism of "positioning support, dynamic distance adjustment, cooling and cleaning, and full circle shaping".

Description

Technical Field

[0001] The present invention relates to the technical field of guide devices, in particular to a guide device for a pipe gang saw. Background Art

[0002] In seamless steel pipe production, a gang saw is a crucial piece of equipment for finishing seamless steel pipes. Its function is to remove uneven wall thickness and outer diameter at both ends of long (approximately 30-100m) hot-rolled steel pipes to facilitate subsequent processing and transportation. The conveyor roller conveyor transports the steel pipes to the sawing position, and a guide device is required to guide the pipes into the conveyor roller conveyor.

[0003] In the prior art, the patent document with the announcement number CN221389162U discloses a pipe gang saw guide device, which includes a guide box, a mounting mechanism, a guide mechanism and an adjustment mechanism. The mounting mechanism is mounted on the front and rear ends of the guide box, the adjustment mechanism is mounted on the top end of the guide box, the guide mechanism is mounted on the bottom end of the guide box, and the guide mechanism is connected to the output end of the adjustment mechanism. When in use, the guide box is mounted on the conveyor roller through the mounting mechanism, the steel pipe is guided by the guide mechanism, and the opening of the guide can be adjusted by the adjustment mechanism. The adjustment can be done quickly and conveniently, and is suitable for different numbers of steel pipes to meet the use requirements. However, the above device has the following technical problems when used:

[0004] While existing guiding devices can guide seamless steel pipes, they are unable to simultaneously correct and cool the pipes during their conveying, or remove scale from the hot-rolled pipe surfaces. Furthermore, most of the functional modules in existing devices operate independently, lacking unified collaborative control logic. This prevents the formation of a closed-loop linkage for positioning, distance adjustment, cooling, and rounding, limiting the stability and efficiency of the guiding process.

[0005] Based on this, the present invention provides a pipe gang saw guide device to solve the problems raised in the above background technology. Summary of the Invention

[0006] The present invention aims to solve the technical problems existing in the prior art and provides a pipe saw guide device to solve the problem that the existing guide device is unable to realize the synchronous correction, cooling and removal of oxide scale on the surface of the hot-rolled pipe during the guiding and conveying process of the seamless steel pipe on the basis of realizing the guiding function of the seamless steel pipe. At the same time, the functional modules of the existing device mostly operate independently and lack a unified collaborative control logic, and cannot form a closed-loop linkage of "positioning, distance adjustment, cooling, and rounding", which limits the stability and efficiency of the guiding process.

[0007] The technical solution of the present invention to solve the above technical problems is as follows: a pipe gang saw guide device, comprising a hot-rolled pipe, a fixed bevel gear ring, a front guide frame, a rear guide frame and an electrically rotatable rotary frame, three guide modules are installed on the front guide frame and the rear guide frame, six slides are slidably installed on the rotary frame, the front guide frame is provided with a radial adjustment system for synchronously changing the positions of the six slides on the rotary frame, a rotating shaft is rotatably installed in each of the six slides, the rotating shaft revolves around the axis of the fixed bevel gear ring and rotates around its own axis at the same time, three slides are connected to a cooling system, and the other three slides are connected to an orthopedic system, and the cooling system and the orthopedic system are both driven by the rotating shafts on the corresponding slides;

[0008] The cooling system includes a cold spindle driven by a rotating shaft and capable of reciprocating along the axis of the hot-rolled tube. The maximum reciprocating stroke and reciprocating frequency of the cold spindle vary periodically. A spiral brush strip is installed on the cold spindle to clean the outer wall of the hot-rolled tube. The cold spindle is provided with multiple groups of coolant spray holes.

[0009] The orthopedic system includes an orthopedic frame and a pressure frame driven by a rotating shaft and capable of reciprocating and reciprocating perpendicular to the axis of the hot-rolled tube. The maximum reciprocating stroke and reciprocating frequency of the pressure frame change alternately and periodically. A group of elastic pressure members are installed between the pressure frame and the orthopedic frame, and a plurality of orthopedic wheels are rotatably installed on the orthopedic frame.

[0010] As a preferred technical solution of the present invention, the guide module includes a positioning frame, the top surface of the positioning frame is equipped with a centering pressure rod, the front guide frame and the rear guide frame are fixedly connected to the centering pressure rod at the corresponding position, a guide wheel that fits the hot-rolled tube is rotatably installed on the positioning frame, a guide column is installed on the top surface of the positioning frame, and the front guide frame and the rear guide frame are slidingly connected to the guide column at the corresponding position.

[0011] As a preferred technical solution of the present invention, the radial adjustment system includes a clamping plate and a driven rotating ring rotatably connected to the front guide frame. The rotating frame is rotatably connected to the clamping plate through a bearing. Two clamping push rods are installed between the front guide frame and the clamping plate. The fixed bevel gear ring is fixedly installed on the clamping plate. A connecting rod is hinged between the driven rotating ring and each slide.

[0012] As a preferred technical solution of the present invention, it also includes a bottom box, the front guide frame and the rear guide frame are fixedly connected to the bottom box, a dirt collecting box with a top opening is slidably installed on the bottom box, a microcontroller is installed on the front guide frame, a servo motor is installed on the bottom box, a flower shaft is installed on the output shaft end of the servo motor, a driving rotary sleeve is rotatably installed on the clamping plate, a first through groove with openings at both ends fixedly opened inside the driving rotary sleeve and slidably connected to the flower shaft, and the cross-sections of the first through groove and the flower shaft are both regular hexagons.

[0013] As a preferred technical solution of the present invention, a hollow guide shaft is rotatably mounted on the slide, a transmission shaft is rotatably mounted on the rotating frame, the axis of the transmission shaft is perpendicular to the rotation axis of the rotating frame, a second through groove is fixedly opened inside the hollow guide shaft with openings at both ends and slidingly connected to the transmission shaft, the cross-sections of the second through groove and the transmission shaft are both regular polygons, linkage bevel gears are mounted on the hollow guide shaft and the rotating shaft, the two linkage bevel gears are orthogonally meshed, and a passive bevel gear meshing with the fixed bevel gear ring is mounted on the top of the transmission shaft.

[0014] As a preferred technical solution of the present invention, the cooling system also includes a wheel a installed on the corresponding rotating shaft, and a long-stroke tooth segment a and a short-stroke tooth segment a are respectively provided on the wheel a. Two empty tooth segments a are provided on the wheel a at the position between the corresponding long-stroke tooth segment a and the short-stroke tooth segment a. A guide screw is rotatably installed on the slide, and a reversing torsion spring is provided at the rotating connection between the guide screw and the slide. A cooling table is transmission-installed on the guide screw, and the cold shaft is rotatably installed on the cooling table. A square segment is provided on the rotating shaft, and a square groove is provided at the tail of the cold shaft to be slidably connected to the square segment. The cross-sections of the square groove and the square segment are both regular hexagons, and a driven gear is installed on the guide screw, and the driven gear is alternately meshed with the long-stroke tooth segment a and the short-stroke tooth segment a.

[0015] As a preferred technical solution of the present invention, the orthopedic system also includes a rotating wheel b installed on the corresponding rotating shaft, and the rotating wheel b is respectively provided with a long-stroke tooth segment b and a short-stroke tooth segment b. Two empty tooth sections b are provided on the rotating wheel b at positions corresponding to the long-stroke tooth segment b and the short-stroke tooth segment b. A guide frame is installed on the rotating frame, and the guide frame is slidably connected to the pressure frame. A group of return springs limited by the pressure frame are installed on the bottom surface of the guide frame, and a driven rack is installed on the pressure frame, and the driven rack is alternately engaged with the long-stroke tooth segment b and the short-stroke tooth segment b.

[0016] As a preferred technical solution of the present invention, the center angles corresponding to the effective meshing areas on the long-stroke tooth segment a and the long-stroke tooth segment b are both 120°, the center angles corresponding to the effective meshing areas on the short-stroke tooth segment a and the short-stroke tooth segment b are both 80°, and the center angles corresponding to the empty tooth segment a and the empty tooth segment b are both 80°.

[0017] As a preferred technical solution of the present invention, three correction systems and three cooling systems are alternately arranged on the rotating frame.

[0018] As a preferred technical solution of the present invention, it also includes a cooling liquid inlet pipe installed on the rear guide frame and a liquid separation ring cavity opened on the rear guide frame, the cooling liquid inlet pipe is installed with a solenoid valve, the electrical control end of the solenoid valve is connected to the microcontroller data, the inner wall of the rear guide frame is rotatably installed with a cooling rotary ring, the inner cavity of the cooling rotary ring is rotatably connected to the liquid separation ring cavity, a water cooling channel is fixedly opened inside the cold shaft, the water cooling channel is connected to the cooling liquid spray hole, and a flexible connecting pipe is connected between the cooling rotary ring and each water cooling channel.

[0019] The beneficial effects of the present invention are:

[0020] 1. The present invention innovatively integrates the guide module, radial adjustment system, cooling system and correction system through an electrically rotatable rotary frame and a microcontroller, forming a closed-loop linkage control mechanism of "positioning support, dynamic distance adjustment, cooling and cleaning, and full-circle shaping". Different from the defects of the existing technology in which each functional module operates independently and lacks coordination, the present device drives the rotating shaft through the combined motion of the revolution and rotation of the rotary frame, synchronously driving the cooling system and the correction system to work. The radial adjustment system synchronously adjusts the radial position of the six slides through the clamping push rod, the driven rotary ring and the connecting rod, providing an adaptive working position for the cooling and correction systems. The guide module forms a stable support by fitting the guide wheel to the outer wall of the hot-rolled tube. The various systems operate in coordination under the unified control of the microcontroller, significantly improving the stability and efficiency of the guide process and solving the problems of dispersed functions and poor coordination of traditional devices.

[0021] 2. The cooling system of the present invention integrates the dual functions of "reciprocating brushing and dynamic spray cooling". Driven by the rotating shaft, the cold shaft periodically moves back and forth along the axis of the hot-rolled tube. The spiral brush strips on it can remove oxide scale, impurities and oil stains on the surface of the hot-rolled tube through a combination of rotation and reciprocating motion. At the same time, the coolant spray holes achieve "intermittent spraying and dynamic coverage" in cooperation with the solenoid valve. The solenoid valve opening time is extended during the long stroke stage to cover a larger axial range. During the short stroke stage, high-frequency opening and closing achieves atomization rapid cooling. Compared with the defects of the existing technology that separates the cooling and brushing functions and has a fixed coolant spraying, this design not only avoids the accumulation of oxide scale and contamination of the coolant, but also evenly distributes the coolant around the circumference and axial direction of the hot-rolled tube through dynamic adjustment, reducing thermal stress and effectively minimizing thermal deformation and surface quality defects.

[0022] 3. The correction system of the present invention realizes precise control of "dynamic pressure plus rolling correction" through the periodic reciprocating displacement of the pressing frame perpendicular to the axis of the hot-rolled tube, combined with the adaptive pressure adjustment of the elastic pressure member. When there is a local roundness deviation in the hot-rolled tube, the return spring of the elastic pressure member can automatically compress or stretch according to the size of the deviation, so that the correction wheel applies greater pressure to the deviated part. At the same time, the periodic movement of the pressing frame prompts the correction wheel to repeatedly correct the hot-rolled tube. Different from the fixed pressure and poor adaptability of traditional rounding devices, this design can reduce the roundness deviation of the hot-rolled tube and can adapt to hot-rolled tubes of different diameters, greatly improving the rounding accuracy and equipment versatility.

[0023] 4. The present invention reduces comprehensive energy consumption compared with existing devices through dynamic cooling, precise rounding and efficient removal of oxide scale. At the same time, the linkage of multiple systems improves production efficiency, and the versatility of the equipment is enhanced. There is no need to frequently replace the guide module, which significantly reduces the production and maintenance costs of the enterprise. It has outstanding economic value and promotion prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic diagram of the overall structure of a pipe gang saw guide device of the present invention;

[0025] Figure 2 This is a schematic structural diagram of the spiral brush strip and the front guide frame of the present invention;

[0026] Figure 3 For the present invention Figure 2 Schematic diagram of the local enlarged structure at A in the middle;

[0027] Figure 4 This is a schematic structural diagram of the fixed bevel gear ring and the rotating frame of the present invention;

[0028] Figure 5 This is a schematic structural diagram of the coolant inlet pipe and the rear guide frame of the present invention;

[0029] Figure 6 Schematic diagram of the structure of the orthosis frame and the orthosis wheel of the present invention;

[0030] Figure 7 For the present invention Figure 6 Schematic diagram of the local enlarged structure at B in the middle;

[0031] Figure 8 This is a schematic structural diagram of the cold shaft and the transmission shaft of the present invention;

[0032] Figure 9 It is a structural schematic diagram of the slide and the press frame of the present invention;

[0033] Figure 10 It is a structural schematic diagram of the pressing frame and the correction wheel of the present invention.

[0034] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0035] 1. Hot-rolled tube; 2. Fixed bevel gear ring; 3. Front guide frame; 4. Rear guide frame; 5. Rotary frame; 6. Slide; 7. Rotary shaft; 8. Cold shaft; 9. Spiral brush strip; 10. Coolant spray hole; 11. Flexible connecting pipe; 12. Press frame; 13. Orthopedic frame; 14. Elastic pressure member; 15. Orthopedic wheel; 16. Positioning frame; 17. Aligning pressure rod; 18. Guide wheel; 19. Guide column; 20. Clamping plate; 21. Driven rotating ring; 22. Clamping push rod; 23. Connecting rod; 24. Bottom box; 25. Dirt box; 26. Microcontroller; 2 7. Servo motor; 28. Flower axis; 29. ​​Driving rotary sleeve; 30. Transmission shaft; 31. Rotor a; 32. Long-stroke tooth segment a; 33. Short-stroke tooth segment a; 34. Empty tooth segment a; 35. Guide screw; 36. Reverse torsion spring; 37. Cooling table; 38. Driven gear; 39. Rotor b; 40. Long-stroke tooth segment b; 41. Short-stroke tooth segment b; 42. Empty tooth segment b; 43. Guide frame; 44. Return spring; 45. Driven rack; 46. Coolant inlet pipe; 47. Cooling rotary ring; 48. Hollow guide shaft. DETAILED DESCRIPTION

[0036] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0037] The present invention provides the following preferred embodiments

[0038] like Figure 1-10 As shown, a pipe gang saw guide device includes a hot-rolled pipe 1, a fixed bevel gear ring 2, a front guide frame 3, a rear guide frame 4 and an electrically rotatable rotating frame 5;

[0039] Hot rolled tube 1 is a hot rolled seamless steel tube;

[0040] It also includes a bottom box 24, the front guide frame 3 and the rear guide frame 4 are fixedly connected to the bottom box 24, a dirt receiving box 25 with a top opening is slidably mounted on the bottom box 24, and a microcontroller 26 is mounted on the front guide frame 3;

[0041] The dirt collecting box 25 is used to collect the oxide scale and waste coolant cleaned by the spiral brush strip 9. The capacity is 10L. It can be quickly drawn out for cleaning through the sliding guide rail of the bottom box 24. The cleaning frequency is once every 50 hot-rolled tubes 1 produced.

[0042] The microcontroller 26 is electrically connected to the radial adjustment system, the cooling system, and the orthopedic system to coordinate the working cycles of each system;

[0043] A servo motor 27 is mounted on the bottom box 24, and a flower shaft 28 is mounted on the output shaft end of the servo motor 27. A driving rotary sleeve 29 is rotatably mounted on the clamping plate 20. A first through slot with openings at both ends and slidably connected to the flower shaft 28 is fixedly provided inside the driving rotary sleeve 29. The cross sections of the first through slot and the flower shaft 28 are both regular hexagonal.

[0044] Three guide modules are installed on the front guide frame 3 and the rear guide frame 4;

[0045] The guide module includes a positioning frame 16, a top surface of the positioning frame 16 is installed with a centering pressure rod 17, the front guide frame 3 and the rear guide frame 4 are fixedly connected to the centering pressure rod 17 at the corresponding position, a guide wheel 18 is rotatably installed on the positioning frame 16 and is in contact with the hot-rolled tube 1, and a guide column 19 is installed on the top surface of the positioning frame 16, and the front guide frame 3 and the rear guide frame 4 are slidably connected to the guide column 19 at the corresponding position;

[0046] The centering pressure rod 17 is a hydraulic telescopic rod, which can adapt to hot-rolled tubes 1 of different diameters;

[0047] The sliding connection between the guide column 19 and the front guide frame 3 and the rear guide frame 4 allows the positioning frame 16 to be finely adjusted along the radial direction of the hot-rolled tube 1, ensuring that the guide wheel 18 always fits the outer wall of the hot-rolled tube 1. When the hot-rolled tube 1 moves, the guide wheel 18 rotates under the action of friction, which can not only reduce the travel resistance of the hot-rolled tube 1, but also form a stable support structure through three-point positioning to prevent the hot-rolled tube 1 from deflecting.

[0048] Six slides 6 arranged in a circular array are slidably mounted on the rotating frame 5;

[0049] The rotating frame 5 is provided with a radially extending guide rail, and the slide 6 is slidably connected to the guide rail through a slider;

[0050] The front guide frame 3 is provided with a radial adjustment system for synchronously changing the positions of the six slides 6 on the rotary frame 5;

[0051] The radial adjustment system includes a clamping plate 20, a driven rotating ring 21 rotatably connected to the front guide frame 3, and a rotating frame 5 rotatably connected to the clamping plate 20 via a bearing. Two clamping push rods 22 are installed between the front guide frame 3 and the clamping plate 20. The fixed bevel gear ring 2 is fixedly mounted on the clamping plate 20. A connecting rod 23 is hinged between the driven rotating ring 21 and each slide 6.

[0052] When the clamping push rod 22 pushes the clamping plate 20 to move, the driven rotating ring 21 synchronously drives the six slides 6 to slide radially along the rotating frame 5 through the connecting rod 23, realizing rapid distance adjustment when guiding hot-rolled tubes 1 with different diameters. The fixed bevel gear ring 2 is fixed to the clamping plate 20. When the rotating frame 5 rotates, the passive bevel gear on the transmission shaft 30 engages with the fixed bevel gear ring 2, driving the hollow guide shaft 48 and the rotating shaft 7 to rotate, forming a compound motion of "revolution and rotation". The transmission design of the regular hexagonal through slot ensures the synchronous displacement of the six slides 6.

[0053] The six slides 6 are all rotatably mounted with a rotating shaft 7, which revolves around the axis of the fixed bevel gear ring 2 and spins around its own axis at the same time;

[0054] A hollow guide shaft 48 is rotatably mounted on the slide 6, and a transmission shaft 30 is rotatably mounted on the rotary frame 5. The axis of the transmission shaft 30 is perpendicular to the rotation axis 7 of the rotary frame 5. A second through-slot with openings at both ends and slidingly connected to the transmission shaft 30 is fixedly opened inside the hollow guide shaft 48. The cross-sections of the second through-slot and the transmission shaft 30 are both regular polygons. Linkage bevel gears are mounted on both the hollow guide shaft 48 and the rotating shaft 7. The two linkage bevel gears are orthogonally meshed. A passive bevel gear meshing with the fixed bevel gear ring 2 is mounted on the top of the transmission shaft 30.

[0055] Three slides 6 are connected to cooling systems, and the other three slides 6 are connected to orthopedic systems. The cooling systems and orthopedic systems are driven by the rotating shafts 7 on the corresponding slides 6;

[0056] The three correction systems and the three cooling systems are alternately arranged on the rotating frame 5;

[0057] The three correction systems and three cooling systems are alternately arranged on the rotating frame 5, so that the hot-rolled tube 1 is uniformly cooled and cleaned and radially shaped during the guiding process, thus avoiding deviation caused by unilateral force.

[0058] The cooling system includes a cooling shaft 8 driven by a rotating shaft 7 and capable of reciprocating along the axis of the hot-rolled tube 1. The maximum reciprocating stroke and reciprocating frequency of the cooling shaft 8 are periodically alternating. A spiral brush strip 9 for cleaning the outer wall of the hot-rolled tube 1 is installed on the cooling shaft 8. A plurality of cooling liquid spray holes 10 are provided on the cooling shaft 8.

[0059] The spiral brush strip 9 is a spiral wire brush, and the spiral brush strip 9 includes an inner lining spiral skeleton, and the inner lining spiral skeleton is provided with a wire brush strip;

[0060] The cooling system further includes a runner a31 mounted on the corresponding rotating shaft 7. The runner a31 is provided with a long-stroke tooth segment a32 and a short-stroke tooth segment a33. The runner a31 is provided with two empty tooth segments a34 between the long-stroke tooth segment a32 and the short-stroke tooth segment a33.

[0061] A guide screw 35 is rotatably mounted on the slide 6. A reversing torsion spring 36 is provided at the rotational connection between the guide screw 35 and the slide 6. A cooling stage 37 is transmission-mounted on the guide screw 35. The cold shaft 8 is rotatably mounted on the cooling stage 37. A square segment is provided on the rotating shaft 7. A square groove is provided at the tail of the cold shaft 8 for sliding connection with the square segment. The cross-sections of the square groove and the square segment are both regular hexagonal. A driven gear 38 is mounted on the guide screw 35. The driven gear 38 is alternately meshed with the long-stroke tooth segment a32 and the short-stroke tooth segment a33.

[0062] The guide screw 35 is connected to the cooling table 37 through a trapezoidal thread pair. When the long-stroke tooth segment a32 of the runner a31 meshes with the driven gear 38, the guide screw 35 rotates forward, driving the cooling table 37 to move to one side along the axis of the hot-rolled tube 1.

[0063] When entering the empty tooth section a34, the reversing torsion spring 36 releases elastic potential energy, driving the guide screw 35 to reverse, so that the cooling stage 37 is reset, thereby achieving the periodic reset movement of the cooling shaft 8;

[0064] When the rotating shaft 7 rotates, the long-stroke tooth segment a32 and the short-stroke tooth segment a33 on the rotating wheel a31 alternately mesh with the driven gear 38, driving the guide screw 35 to rotate forward and reverse, causing the cooling table 37 to reciprocate along the axis of the hot-rolled tube 1. When in the long-stroke tooth segment a32, the maximum reciprocating stroke of the cooling shaft 8 is 30 mm, cooperating with the spiral brush strip 9 to remove the oxide scale on the surface of the hot-rolled tube 1;

[0065] When the short-stroke tooth segment a33 is used, the maximum reciprocating stroke of the cooling shaft 8 is 15 mm. The cooling liquid spray hole 10 sprays the cooling liquid. The microcontroller 26 controls the periodic opening and closing of the electromagnetic valve to connect the water-cooling channel of the cooling shaft 8 with the cooling ring 47, thus realizing the cycle cooling of "cleaning, rapid cooling, and slow cooling".

[0066] The solenoid valve is an electromagnetic reversing valve, and its opening and closing frequency is adjusted by the microcontroller 26 according to the travel speed of the hot-rolled tube 1 and the feedback signal of the external temperature sensor matched with the device;

[0067] The rotating shaft 7 drives the cold shaft 8 to move back and forth along the axis of the hot-rolled tube 1, and its maximum reciprocating stroke and reciprocating frequency will change periodically. This periodic reciprocating motion enables the cold shaft 8 to support and guide the hot-rolled tube 1 at different positions. When the hot-rolled tube 1 moves in the tube gang saw, the stable reciprocating motion of the cold shaft 8 ensures the linear motion of the hot-rolled tube 1 in the axial direction, avoiding processing errors caused by shaking or deviation of the hot-rolled tube 1.

[0068] Moreover, the periodic changes in the movement frequency and stroke of the cold shaft 8 can be adaptively adjusted according to the different processing stages and actual conditions of the hot-rolled tube 1, further improving the accuracy and stability of the guide;

[0069] Compared with the existing technology, this cooling system solves the problem of position deviation that is easy to occur in the hot-rolled tube 1 during the guiding process, making the tube gang saw's processing of the hot-rolled tube 1 more accurate and efficient, effectively improving product quality and production efficiency;

[0070] During the cooling process, the coolant supply and spraying mechanism of the cooling system plays an important role. The coolant enters the liquid separation ring cavity through the coolant inlet pipe 46, then passes through the cooling ring 47 and the flexible connecting pipe 11 to enter the water cooling flow channel inside the cooling shaft 8, and finally is sprayed out from the multiple groups of coolant spray holes 10 opened on the cooling shaft 8;

[0071] Because the cold shaft 8 is in reciprocating motion, the coolant can be evenly sprayed on the outer wall of the hot-rolled tube 1. Moreover, the periodic alternation of the maximum reciprocating displacement stroke and the reciprocating frequency of the cold shaft 8 allows the coolant to cover a larger surface area of ​​the hot-rolled tube 1, achieving all-round and multi-angle cooling. This cooling method effectively solves the problem of uneven cooling of the hot-rolled tube 1 in the prior art, lowers the temperature of the hot-rolled tube 1, reduces thermal stress and thermal deformation, and improves the physical properties and processing accuracy of the hot-rolled tube 1. At the same time, the periodic cooling method can also avoid local overcooling caused by concentrated spraying of coolant, ensuring the stability of the overall quality of the hot-rolled tube 1.

[0072] When the cold shaft 8 moves back along the axis of the hot-rolled tube 1, the spiral brush strip 9 cleans the outer wall of the hot-rolled tube 1, effectively removing the oxide scale, impurities and oil stains on the surface of the hot-rolled tube 1;

[0073] Moreover, the reciprocating motion of the cooling shaft 8 and the rotating motion of the spiral brush strip 9 are combined to increase the intensity and range of the cleaning and improve the cleaning effect. At the same time, the coolant is sprayed from the coolant spray hole 10, which plays a role of flushing and lubrication during the cleaning process, further improving the quality of the outer surface treatment. Compared with the existing technology, this cooling system solves the problem of incomplete cleaning of the outer surface of the hot-rolled tube 1, making the surface of the hot-rolled tube 1 smoother and cleaner, providing a good foundation for subsequent processing and use, and improving the appearance quality and corrosion resistance of the product.

[0074] The orthopedic system includes an orthopedic frame 13 and a press frame 12 driven by a rotating shaft 7 and capable of reciprocating perpendicularly to the axis of the hot-rolled tube 1. The maximum reciprocating stroke and reciprocating frequency of the press frame 12 change alternately and periodically. A group of elastic pressure members 14 are installed between the press frame 12 and the orthopedic frame 13, and a plurality of orthopedic wheels 15 are rotatably mounted on the orthopedic frame 13.

[0075] The elastic pressure member 14 includes a set of T-shaped guide rods mounted on the orthosis frame 13, each T-shaped guide rod is slidably connected to the pressure frame 12, and a return spring is sleeved on the T-shaped guide rod and corresponding to the position between the orthosis frame 13 and the pressure frame 12;

[0076] The orthopedic system further includes a rotating wheel b39 mounted on the corresponding rotating shaft 7. The rotating wheel b39 is provided with a long-stroke tooth segment b40 and a short-stroke tooth segment b41. The rotating wheel b39 is provided with two empty tooth segments b42 between the long-stroke tooth segment b40 and the short-stroke tooth segment b41.

[0077] A guide frame 43 is installed on the rotating frame 5, and the guide frame 43 is slidably connected to the pressure frame 12. A group of return springs 44 limited by the pressure frame 12 are installed on the bottom surface of the guide frame 43. A driven rack 45 is installed on the pressure frame 12, and the driven rack 45 is alternately engaged with the long-stroke tooth segment b40 and the short-stroke tooth segment b41.

[0078] The center angles corresponding to the effective meshing areas on the long-stroke tooth segment a32 and the long-stroke tooth segment b40 are both 120°, the center angles corresponding to the effective meshing areas on the short-stroke tooth segment a33 and the short-stroke tooth segment b41 are both 80°, and the center angles corresponding to the empty tooth segment a34 and the empty tooth segment b42 are both 80°.

[0079] During the hot-rolled tube 1 guiding process, traditional guiding devices often have difficulty in accurately positioning and stably guiding the hot-rolled tube 1 in the radial direction. However, the elastic pressure member 14 structure of this correction system plays a unique role.

[0080] The working process is as follows: when the hot-rolled tube 1 moves in the tube gang saw, the pressing frame 12 is driven by the rotating shaft 7 to move back and forth perpendicular to the axis of the hot-rolled tube 1, and the maximum reciprocating stroke and reciprocating frequency change periodically. The sliding connection between the T-shaped guide rod and the pressing frame 12 ensures the stability and accuracy of the pressing frame 12 during the displacement process.

[0081] The return spring is sleeved on the T-shaped guide rod and is located between the correction frame 13 and the pressure frame 12. When the pressure frame 12 is subjected to an irregular force from the hot-rolled tube 1, the return spring elastically expands and contracts according to the magnitude and direction of the force. This enables the pressure frame 12 to adaptively adjust the pressure on the hot-rolled tube 1, thereby ensuring that the correction wheel 15 always fits tightly against the hot-rolled tube 1, providing stable radial guidance for the hot-rolled tube 1.

[0082] Compared with the existing technology, this adaptive guiding method avoids the guiding deviation caused by the uneven surface of the hot-rolled tube 1 or slight changes in the tube diameter, greatly improves the accuracy and stability of the guide, ensures the linear movement of the hot-rolled tube 1 during processing, and reduces the scrap rate;

[0083] During the cooling process, the cooling methods of the prior art often make it difficult to ensure uniform distribution of the coolant in the circumferential direction of the hot-rolled tube 1. However, the structure of this correction system has a positive effect on the cooling effect. Its working process is as follows: the reciprocating motion of the press frame 12 causes the correction wheel 15 to continuously roll on the surface of the hot-rolled tube 1. This rolling drives the flow of coolant around the hot-rolled tube 1. At the same time, the presence of the elastic pressure member 14 maintains a certain pressure between the correction wheel 15 and the hot-rolled tube 1, which promotes the coolant to better penetrate into various parts of the surface of the hot-rolled tube 1. When the displacement stroke and frequency of the press frame 12 change periodically, pressure fluctuations of varying degrees will be generated, further enhancing the disturbance effect of the coolant, which enables the coolant to cover the surface of the hot-rolled tube 1 more evenly, thereby improving the uniformity and efficiency of cooling.

[0084] Compared with the prior art, this structure solves the problem of uneven distribution of coolant, effectively reduces the thermal stress and thermal deformation of the hot-rolled tube 1, and improves the quality and performance of the hot-rolled tube 1;

[0085] During the shaping process, conventional rounding devices often use a fixed pressure method to shape the hot-rolled tube 1, which is difficult to adapt to hot-rolled tubes 1 with different diameters and roundness deviations. The elastic pressure member 14 structure of this correction system is highly creative.

[0086] The working process is as follows: when the hot-rolled tube 1 has a roundness deviation, the elastic pressure member 14 will automatically adjust the pressure according to the deviation during the return movement of the pressing frame 12. If the roundness deviation of a part of the hot-rolled tube 1 is large, the return spring will be compressed more, causing the correction wheel 15 to apply greater pressure to that part.

[0087] On the contrary, less pressure is applied. This dynamic pressure adjustment method can accurately shape the hot-rolled tube 1 according to its actual roundness. Moreover, the periodic reciprocating motion of the pressing frame 12 enables the correction wheel 15 to repeatedly correct the hot-rolled tube 1, further improving the correction effect. Compared with the existing technology, this structure solves the problems of poor adaptability and low correction accuracy of traditional rounding devices, and can significantly improve the roundness accuracy of the hot-rolled tube 1, meeting higher production standards and usage requirements.

[0088] The long-stroke tooth segment a32, the long-stroke tooth segment b40, the short-stroke tooth segment a33, the short-stroke tooth segment b41, the driven rack 45, and the driven gear 38 are all provided with a rubber buffer coating. The provision of the rubber buffer coating avoids hard collision rate when the gear rack contacts and reduces noise during operation of the device.

[0089] This angle parameter setting makes the process of alternate meshing of the driven gear 38 and the driven rack 45 with the long-stroke tooth segment and the short-stroke tooth segment present a periodic change during the rotation of the runner a31 and the runner b39;

[0090] When the long-stroke tooth segment is engaged, the cooling shaft 8 and the pressing frame 12 will move for a larger stroke, which can achieve a wider range of coolant spraying and a stronger cleaning effect for the cooling system;

[0091] For the correction system, it can exert greater shaping force on the hot-rolled tube 1 to achieve a stronger rounding effect. When the short-stroke tooth segment is engaged, the cold shaft 8 and the press frame 12 move in a small stroke to make fine adjustments to ensure the accuracy of cooling and rounding. The empty tooth section provides a short buffer and reset time for the system, making the system operation more stable and orderly.

[0092] This periodic alternating working mode can adjust the intensity and range of cooling and rounding according to the needs of the hot-rolled tube 1 at different processing stages. Compared with the traditional fixed stroke or single mode working mode, it greatly improves the working efficiency and processing quality.

[0093] The setting of the above-mentioned center angle parameters is designed according to the principles of mechanical transmission and kinematics. By rationally allocating the angles of the long-stroke tooth segment, the short-stroke tooth segment and the empty tooth segment, the periodic reciprocating motion of the cold shaft 8 and the pressure frame 12 is achieved. This is an optimization based on the existing mechanical structure and transmission method. There is no need to develop new materials to realize this motion mode. It only requires reasonable angle design and layout of the existing gear and rack structure.

[0094] In this device, structural parameter innovation is reflected in the optimization of the geometric dimensions, angular ratios, spatial layout and other parameters of the mechanical components, forming a dynamic collaborative working mechanism that is different from existing technologies. All parameters can be achieved based on conventional mechanical materials and processing technology, without the need for the development of new materials:

[0095] It also includes a cooling liquid inlet pipe 46 installed on the rear guide frame 4 and a liquid separation ring cavity opened on the rear guide frame 4. A solenoid valve is installed on the cooling liquid inlet pipe 46. The electronic control end of the solenoid valve is data-connected to the microcontroller 26. A cooling rotary ring 47 is rotatably installed on the inner wall of the rear guide frame 4. The inner cavity of the cooling rotary ring 47 is rotationally connected to the liquid separation ring cavity. A water-cooling channel is fixedly opened inside the cold shaft 8. The water-cooling channel extends along the axial direction of the cold shaft 8. The water-cooling channel is connected to the cooling liquid spray hole 10. A flexible connecting pipe 11 is connected between the cooling rotary ring 47 and each water-cooling channel.

[0096] The solenoid valve is controlled by the microcontroller 26 to open and close periodically, which can accurately adjust the spray rhythm of the coolant. In conjunction with the stroke and frequency changes during the reciprocating motion of the cold shaft 8, a cooling mode of "intermittent spraying plus dynamic coverage" is formed. When the cold shaft 8 is in the long-stroke cleaning stage, the solenoid valve is open for a longer time, and the coolant covers a larger axial range of the hot-rolled tube 1;

[0097] During the short-stroke cooling stage, the solenoid valve is opened and closed at a high frequency to achieve atomization and rapid cooling to avoid local overheating. This dynamic adjustment mechanism enables the coolant to be evenly distributed around the circumference and axial direction of the hot-rolled tube 1. Compared with traditional fixed-flow cooling, thermal stress is reduced and the roundness deviation of the hot-rolled tube 1 is reduced.

[0098] The periodic opening and closing of the solenoid valve reduces the amount of coolant used compared to traditional continuous spraying. Combined with the function of the spiral brush bar 9 to clean the oxide scale, it avoids coolant contamination caused by oxide scale accumulation and reduces waste liquid treatment costs. At the same time, precise cooling control reduces the scrap rate of the hot-rolled tube 1 due to thermal deformation and reduces comprehensive energy consumption.

[0099] The specific method of use of the present invention is as follows:

[0100] When the pipe gang saw guide device of the present invention is working, the servo motor 27 drives the rotary sleeve 29 to rotate through the flower shaft 28, driving the rotary frame 5 to rotate. The transmission shaft 30 on the rotary frame 5 rotates due to the engagement of the fixed bevel gear ring 2, causing the hollow guide shaft 48 and the rotating shaft 7 to form a compound motion of "revolution and rotation". The clamping push rod 22 of the radial adjustment system pushes the clamping plate 20 to move, and the radial position of the six slides 6 is synchronously adjusted through the driven rotating ring 21 and the connecting rod 23 to adapt to hot-rolled pipes 1 of different diameters. The guide modules on the front guide frame 3 and the rear guide frame 4 are attached to the outer wall of the hot-rolled pipe 1 through the guide wheels 18 to form a stable support.

[0101] During the rotation of the rotating frame 5, the three cooling systems and the three correction systems work together;

[0102] In the cooling system, the rotating shaft 7 drives the runner a31 to rotate, and its long-stroke tooth segment a32 and short-stroke tooth segment a33 alternately mesh with the driven gear 38, causing the cold shaft 8 to move back and forth along the axis of the hot-rolled tube 1. The stroke and frequency change periodically, and the spiral brush strip 9 cleans the oxide scale. The coolant spray hole 10 sprays intermittently under the cooperation of the solenoid valve, realizing the "cleaning, rapid cooling, slow cooling" cycle;

[0103] In the correction system, the rotating shaft 7 drives the rotating wheel b39, and the long-stroke tooth segment b40 and the short-stroke tooth segment b41 engage with the driven rack 45, causing the pressing frame 12 to move back and forth perpendicular to the axis of the hot-rolled tube 1. The elastic pressure member 14 drives the correction wheel 15 to apply dynamic pressure to the hot-rolled tube 1. When the correction wheel 15 rolls and corrects the tube, the elastic pressure member 14 adaptively adjusts the pressure, cooperating with the spray of the cooling system to promote uniform distribution of the coolant.

[0104] Each system is controlled in coordination by a microcontroller 26. The radial adjustment system provides an appropriate working position for the cooling and correction systems. The guide module ensures the linear motion of the hot-rolled tube 1. The cooling system removes scale and cools to reduce thermal deformation. The correction system corrects the tube in real time, forming a closed loop of "positioning support, dynamic distance adjustment, cooling and brushing, and rounding correction."

[0105] If there is no cooling system, the oxide scale on the surface of the hot-rolled tube 1 cannot be removed, and the coolant is sprayed unevenly, resulting in poor surface quality and concentrated thermal stress of the hot-rolled tube 1. During rounding, surface impurities and uneven temperature affect the shaping accuracy, and even cause deformation and cracking of the hot-rolled tube 1, making it impossible to achieve high-precision processing.

[0106] The present invention solves the problems of uneven cooling, low rounding accuracy, poor automatic distance adjustment capability, and incomplete oxide scale cleaning during the guiding of the hot-rolled tube 1 in the prior art through the linkage of multiple systems. It realizes the dynamic coordination of cooling, rounding, and cleaning during the guiding process of the hot-rolled tube 1, greatly improving the processing quality and production efficiency of the hot-rolled tube 1.

[0107] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A pipe gang saw guide device, comprising a hot-rolled pipe (1), a fixed bevel gear ring (2), a front guide frame (3), a rear guide frame (4) and an electrically rotatable rotating frame (5), characterized in that: The front guide frame (3) and the rear guide frame (4) are both installed with three guide modules, and six slides (6) are slidably installed on the rotating frame (5). The front guide frame (3) is provided with a radial adjustment system for synchronously changing the positions of the six slides (6) on the rotating frame (5). A rotating shaft (7) is rotatably installed in each of the six slides (6). The rotating shaft (7) revolves around the axis of the fixed bevel gear ring (2) and rotates around its own axis at the same time. Three slides (6) are connected to a cooling system, and the other three slides (6) are connected to an orthopedic system. The cooling system and the orthopedic system are both driven by the rotating shaft (7) on the corresponding slide (6); The cooling system includes a cold shaft (8) driven by a rotating shaft (7) and capable of reciprocating along the axis of the hot-rolled tube (1), wherein the maximum reciprocating stroke and the reciprocating frequency of the cold shaft (8) are periodically alternating, a spiral brush strip (9) for cleaning the outer wall of the hot-rolled tube (1) is installed on the cold shaft (8), and a plurality of cooling liquid spray holes (10) are provided on the cold shaft (8); The orthopedic system includes an orthopedic frame (13) and a pressing frame (12) driven by a rotating shaft (7) and capable of reciprocating and resetting perpendicularly to the axis of the hot-rolled tube (1). The maximum reciprocating stroke and reciprocating frequency of the pressing frame (12) change alternately and periodically. A group of elastic pressure members (14) are installed between the pressing frame (12) and the orthopedic frame (13). A plurality of orthopedic wheels (15) are rotatably installed on the orthopedic frame (13).

2. A pipe gang saw guide device according to claim 1, characterized in that: The guide module includes a positioning frame (16), a top surface of the positioning frame (16) is installed with a centering pressure rod (17), the front guide frame (3) and the rear guide frame (4) are fixedly connected to the centering pressure rod (17) at corresponding positions, a guide wheel (18) is rotatably installed on the positioning frame (16) and is in contact with the hot-rolled tube (1), a top surface of the positioning frame (16) is installed with a guide column (19), and the front guide frame (3) and the rear guide frame (4) are slidably connected to the guide column (19) at corresponding positions.

3. The pipe gang saw guide device according to claim 1, characterized in that: The radial adjustment system comprises a clamping plate (20), a driven rotating ring (21) rotatably connected to the front guide frame (3), the rotating frame (5) is rotatably connected to the clamping plate (20) via a bearing, two clamping push rods (22) are installed between the front guide frame (3) and the clamping plate (20), the fixed bevel gear ring (2) is fixedly installed on the clamping plate (20), and a connecting rod (23) is hinged between the driven rotating ring (21) and each slide (6).

4. A pipe gang saw guide device according to claim 3, characterized in that: The invention also includes a bottom box (24), the front guide frame (3) and the rear guide frame (4) are fixedly connected to the bottom box (24), a dirt receiving box (25) with a top opening is slidably mounted on the bottom box (24), a microcontroller (26) is mounted on the front guide frame (3), a servo motor (27) is mounted on the bottom box (24), a flower shaft (28) is mounted on the output shaft end of the servo motor (27), a driving rotary sleeve (29) is rotatably mounted on the clamping plate (20), a first through slot with two ends opening fixedly opened inside the driving rotary sleeve (29) and slidably connected to the flower shaft (28), and the cross sections of the first through slot and the flower shaft (28) are both regular hexagons.

5. The pipe gang saw guide device according to claim 1, characterized in that: A hollow guide shaft (48) is rotatably mounted on the slide (6), and a transmission shaft (30) is rotatably mounted on the rotary frame (5). The axis of the transmission shaft (30) is perpendicular to the rotation axis (7) of the rotary frame (5). A second through groove with two ends open and slidably connected to the transmission shaft (30) is fixedly opened inside the hollow guide shaft (48). The cross sections of the second through groove and the transmission shaft (30) are both regular polygons. Linkage bevel gears are mounted on both the hollow guide shaft (48) and the rotating shaft (7). The two linkage bevel gears are orthogonally meshed. A passive bevel gear meshing with the fixed bevel gear ring (2) is mounted on the top end of the transmission shaft (30).

6. The pipe gang saw guide device according to claim 1, characterized in that: The cooling system further comprises a runner a (31) mounted on the corresponding rotating shaft (7), wherein the runner a (31) is provided with a long-stroke tooth segment a (32) and a short-stroke tooth segment a (33), and the runner a (31) is provided with two empty tooth segments a (34) at positions between the corresponding long-stroke tooth segment a (32) and the short-stroke tooth segment a (33). A guide screw (35) is rotatably mounted on the slide (6), and a reversing torsion spring is provided at a rotational connection between the guide screw (35) and the slide (6). (36), a cooling platform (37) is installed on the guide screw (35), the cooling shaft (8) is rotatably installed on the cooling platform (37), a square segment is provided on the rotating shaft (7), a square groove is provided at the tail of the cooling shaft (8) for sliding connection with the square segment, and the cross sections of the square groove and the square segment are both regular hexagons, a driven gear (38) is installed on the guide screw (35), and the driven gear (38) is alternately meshed with the long-stroke tooth segment a (32) and the short-stroke tooth segment a (33).

7. The pipe gang saw guide device according to claim 6, characterized in that: The orthopedic system further comprises a rotating wheel b (39) mounted on the corresponding rotating shaft (7), wherein the rotating wheel b (39) is respectively provided with a long-stroke tooth segment b (40) and a short-stroke tooth segment b (41), and two empty tooth segments b (42) are provided on the rotating wheel b (39) at positions between the corresponding long-stroke tooth segment b (40) and the short-stroke tooth segment b (41), and a guide frame (43) is mounted on the rotating frame (5), wherein the guide frame (43) is slidably connected to the pressure frame (12), and a group of return springs (44) limited by the pressure frame (12) are mounted on the bottom surface of the guide frame (43), and a driven rack (45) is mounted on the pressure frame (12), and the driven rack (45) is alternately meshed with the long-stroke tooth segment b (40) and the short-stroke tooth segment b (41).

8. The pipe gang saw guide device according to claim 7, characterized in that: The center angles corresponding to the effective meshing areas on the long-stroke tooth segment a (32) and the long-stroke tooth segment b (40) are both 120°, the center angles corresponding to the effective meshing areas on the short-stroke tooth segment a (33) and the short-stroke tooth segment b (41) are both 80°, and the center angles corresponding to the empty tooth segment a (34) and the empty tooth segment b (42) are both 80°.

9. The pipe gang saw guide device according to claim 1, characterized in that: The three correction systems and the three cooling systems are alternately arranged on the rotating frame (5).

10. The pipe gang saw guide device according to claim 1, characterized in that: It also includes a cooling liquid inlet pipe (46) installed on the rear guide frame (4) and a liquid separation ring cavity opened on the rear guide frame (4), the cooling liquid inlet pipe (46) is installed with a solenoid valve, the electric control end of the solenoid valve is data-connected to the microcontroller (26), a cooling rotary ring (47) is rotatably installed on the inner wall of the rear guide frame (4), the inner cavity of the cooling rotary ring (47) is rotatably connected to the liquid separation ring cavity, a water cooling channel is fixedly opened inside the cold shaft (8), the water cooling channel is connected to the cooling liquid spray hole (10), and a flexible connecting pipe (11) is connected between the cooling rotary ring (47) and each water cooling channel.

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