Deceleration transmission distribution system and method of rod and wire three-roller mill

Abstract

The invention relates to the technical field of round wood rolling, and discloses a speed reduction transmission distribution system and method of a rod and wire three-roller mill. The system comprises an integrated speed reduction distribution box, two 30-degree bevel transmission boxes and five couplings, in the integrated speed reduction distribution box, single-path input power is synchronously distributed into three paths of output through a gear set, the included angle between every two adjacent output shafts is 30 degrees, and after the directions of the bevel transmission boxes are converted, the included angle between the three paths of output axes is 120 degrees, and the three paths of output axes correspond to an input shaft of a three-high rod and wire mill rack. A traditional overall module type and external reduction gearbox structure is abandoned, transmission structure simplification, cost reduction and convenient maintenance are achieved through collaborative optimization of parts, meanwhile, transmission efficiency and stability are improved, the problems that in the prior art, the structure is complex, and manufacturing and assembling difficulty is large are solved, and the power transmission device is suitable for power transmission scenes of various rod and wire three-roller mills.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of round bar rolling, and particularly relates to a speed reduction transmission distribution system and method of a three-roller bar and wire rod mill. BACKGROUND

[0002] In the production of bar and wire rod, product quality is mainly reflected in size accuracy, surface quality and internal organizational structure performance. At present, most domestic bar and wire rod mills adopt traditional two-roller mills, which have simple structure but large spread in the rolling process, resulting in that the performance of the rolled products is difficult to meet higher requirements. Three-roller groove rolling technology is valued due to its advantages of high rolling accuracy and good surface quality.

[0003] The rack of the traditional bar and wire rod three-roller mill is independently driven by three input shafts at an angle of 120°. In order to realize the synchronous rotation of the three input shafts, the traditional power transmission scheme usually adopts an overall modular structure matched with an external reduction box. This transmission distribution form has complex structure, high design, manufacturing and assembly difficulty, and is inconvenient for daily maintenance, and has high cost. Therefore, there is an urgent need for a bar and wire rod three-roller mill speed reduction transmission distribution scheme with simpler structure, easy manufacturing and maintenance and stable transmission. SUMMARY

[0004] The purpose of the present application is to provide a speed reduction transmission distribution system and method of a bar and wire rod three-roller mill, aiming to solve the technical problems of complex structure, difficult manufacturing and assembly and inconvenient maintenance of the existing three-roller mill transmission system.

[0005] In order to solve the above problems, according to one aspect of the present application, the present application provides a speed reduction transmission distribution system of a bar and wire rod three-roller mill, comprising: an integrated speed reduction distribution box, which is internally provided with an input shaft, a first transmission shaft, a second transmission shaft, a first output shaft, a second output shaft and a third output shaft, the input shaft is used for receiving power transmitted by a motor, and the power is distributed to the first output shaft, the second output shaft and the third output shaft through a gear set, wherein the included angle between the first output shaft and the second output shaft is 30°, and the included angle between the second output shaft and the third output shaft is 30°; a first bevel angle transmission box, the input shaft of which is connected to the first output shaft of the integrated speed reduction distribution box through a first coupling, and the output shaft of the first bevel angle transmission box is connected to one input shaft of the rack of the bar and wire rod three-roller mill through a fourth coupling, and the output shaft of the first bevel angle transmission box is at an angle of 30° with the input shaft; a second bevel angle transmission box, the input shaft of which is connected to the third output shaft of the integrated speed reduction distribution box through a third coupling, and the output shaft of the second bevel angle transmission box is connected to another input shaft of the rack of the bar and wire rod three-roller mill through a fifth coupling, and the output shaft of the second bevel angle transmission box is at an angle of 30° with the input shaft; The second output shaft of the integrated speed reduction distribution box is connected with the third input shaft of the rod wire three-roller mill frame through a second coupling; The axes of the output shaft of the first bevel gear box, the output shaft of the second bevel gear box and the second output shaft of the integrated speed reduction distribution box are distributed at a spatial 120° angle, directly corresponding to the three input shafts of the rod wire three-roller mill frame.

[0006] In some embodiments, the gear set in the integrated speed reduction distribution box comprises: A first transmission gear fixedly installed on the input shaft; A second transmission gear and a third transmission gear fixedly installed on the first transmission shaft, the second transmission gear being engaged with the first transmission gear; A fourth transmission gear and a fifth transmission gear fixedly installed on the second transmission shaft, the fourth transmission gear being engaged with the third transmission gear; A sixth transmission gear fixedly installed on the second output shaft, the sixth transmission gear being engaged with the fifth transmission gear; The two ends of the second transmission shaft are respectively coupled with the first output shaft and the third output shaft through a pair of transmission bevel gears.

[0007] In some embodiments, the first output shaft, the second transmission shaft, the third output shaft and the transmission bevel gears in the integrated speed reduction distribution box are coupled through interference assembly or key coupling; The second output shaft and the sixth transmission gear are coupled through interference assembly or key coupling; The first transmission shaft and the second transmission gear and the third transmission gear are coupled through interference assembly or key coupling; The second transmission shaft and the fourth transmission gear and the fifth transmission gear are coupled through interference assembly or key coupling; The input shaft and the first transmission gear are coupled through interference assembly or key coupling.

[0008] In some embodiments, the first output shaft and the first coupling, the second output shaft and the second coupling, and the third output shaft and the third coupling of the integrated speed reduction distribution box are coupled through interference assembly or key coupling.

[0009] In some embodiments, the input shaft and the first coupling, and the output shaft and the fourth coupling of the first bevel gear box are coupled through interference assembly or key coupling.

[0010] In some embodiments, the input shaft and the third coupling, and the output shaft and the fifth coupling of the second bevel gear box are coupled through interference assembly or key coupling.

[0011] In some embodiments, the three input shafts of the rod wire three-high rolling mill stand are all connected with the second coupling, the fourth coupling and the fifth coupling through interference assembly or key coupling.

[0012] The integrated reduction distribution box, the first bevel gear box and the second bevel gear box all adopt independent oil pool lubrication systems.

[0013] In some embodiments, the system evenly distributes the single power input from the motor into three synchronous outputs through the integrated reduction distribution box, and transmits the power to the three input shafts of the rod wire three-high rolling mill stand arranged at an angle of 120° via the first bevel gear box, the second bevel gear box and the second coupling.

[0014] The embodiment of the present application provides a reduction transmission distribution method of a rod wire three-high rolling mill adopting the system as any of the above, and the method comprises: receiving the power input from the motor through the input shaft of the integrated reduction distribution box; synchronously distributing the power to the first output shaft, the second output shaft and the third output shaft through the first transmission shaft, the second transmission shaft and the gear set inside the integrated reduction distribution box; transmitting the power from the first output shaft to the first bevel gear box through the first coupling, and outputting the power to the rod wire three-high rolling mill stand through the fourth coupling after the direction of the power is converted by the first bevel gear box; transmitting the power from the third output shaft to the second bevel gear box through the third coupling, and outputting the power to the rod wire three-high rolling mill stand through the fifth coupling after the direction of the power is converted by the second bevel gear box; directly outputting the power from the second output shaft to the rod wire three-high rolling mill stand through the second coupling; adjusting the direction of the power through the first bevel gear box and the second bevel gear box, so that the power axes of the three input shafts of the rod wire three-high rolling mill stand form an angle of 120° with each other.

[0015] Compared with the prior art, the reduction transmission distribution system and method of the rod wire three-high rolling mill have at least the following beneficial effects: Simplified structure: the complex structure of the traditional whole module type matched with the external reduction box is abandoned, the integrated reduction distribution box is matched with the bevel gear box with accurate angle design, the number of transmission components is reduced, the size and weight of the equipment are reduced, and the design, manufacturing and assembly processes are simplified.

[0016] Cost reduction: the significant reduction of manufacturing cost is brought by the simplified structure, and the standardized coupling mode and component design facilitate batch production, further controlling the cost; the independent oil pool lubrication system reduces the consumption and replacement frequency of lubricating oil, and reduces the operation and maintenance cost.

[0017] High transmission efficiency and stability: the cooperation of gear set and shaft coupling ensures high transmission efficiency and low energy loss; the three-way output speed deviation is controlled within ±0.1%, which ensures the strict synchronous rotation of the three input shafts of the rod wire three-roll mill stand and improves the size accuracy and surface quality of the rolled products.

[0018] Convenient maintenance: the standardized coupling method is adopted for each component, which facilitates disassembly and assembly and reduces equipment downtime; the compact structure and reasonable layout facilitate daily inspection and troubleshooting.

[0019] Strong versatility: by adjusting the transmission ratio of the gears in the integrated reduction distribution box (within the design range), the rolling requirements of different specifications of rod wire can be met, and the power transmission scene of various three-roll mills can be applied.

[0020] The above description is only a summary of the technical solutions of the present application. In order to more clearly understand the technical means of the present application, and to implement the content of the description, the following will describe the preferred embodiments of the present application in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0022] Figure 1 is a structural schematic diagram of the speed reduction transmission distribution system of the rod wire three-roll mill of the present application.

[0023] Explanation of reference numerals: 1, first transmission gear; 2, input shaft; 3, first transmission shaft; 4, third transmission gear; 5, second transmission gear; 6, fourth transmission gear; 7, transmission bevel gear; 8, integrated reduction distribution box; 9, second transmission shaft; 10, first output shaft; 11, fifth transmission gear; 12, first shaft coupling; 13, first bevel gear box; 14, fourth shaft coupling; 15, second bevel gear box; 16, third shaft coupling; 17, second shaft coupling; 18, second output shaft; 19, third output shaft; 20, sixth transmission gear; 21, rod wire three-roll mill stand; 22, fifth shaft coupling. DETAILED DESCRIPTION

[0024] To further clarify the technical means and effects taken by the present application to achieve the intended purpose, the following describes the specific embodiments, structures, features and effects according to the present application in detail with reference to the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "embodiments" do not necessarily refer to the same embodiment. In addition, the specific features, structures or characteristics in one or more embodiments can be combined in any suitable form.

[0025] In the description of the present application, it should be clear that the terms "first", "second", and the like in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily describe a specific order or sequence; the terms "vertical", "horizontal", "longitudinal", "front", "back", "left", "right", "up", "down", "horizontal" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not mean that the device or element referred to must have a particular orientation or position, and therefore cannot be understood as a limitation on the present application.

[0026] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0027] As shown in Figure 1 The embodiment of the present application provides a speed reduction transmission distribution system of a bar wire three-roll mill, which comprises: An integrated speed reduction distribution box 8 is internally provided with an input shaft 2, a first transmission shaft 3, a second transmission shaft 9, a first output shaft 10, a second output shaft 18 and a third output shaft 19, the input shaft 2 is used to receive the power transmitted by the motor, and the power is distributed to the first output shaft 10, the second output shaft 18 and the third output shaft 19 through a gear set, wherein the included angle between the first output shaft 10 and the second output shaft 18 is 30°, and the included angle between the second output shaft 18 and the third output shaft 19 is 30°; The input shaft of the first bevel angle transmission box 13 is connected with the first output shaft 10 of the integrated speed reduction distribution box 8 through the first shaft coupling 12, and the output shaft is connected with an input shaft of the bar wire three-roll mill rack 21 through the fourth shaft coupling 14, and the output shaft of the first bevel angle transmission box 13 is at an angle of 30° with the input shaft; The input shaft of the second bevel gear box 15 is connected with the third output shaft 19 of the integrated reduction distribution box 8 through the third coupling 16, and the output shaft is connected with another input shaft of the bar and wire three-roller mill rack 21 through the fifth coupling 22, and the output shaft and the input shaft of the second bevel gear box 15 are at an angle of 30°. The second output shaft 18 of the integrated reduction distribution box 8 is connected with the third input shaft of the bar and wire three-roller mill rack 21 through the second coupling 17. The output shaft of the first bevel gear box 13, the output shaft of the second bevel gear box 15 and the second output shaft 18 of the integrated reduction distribution box 8 are at an angle of 120° in space, which directly corresponds to the three input shafts of the bar and wire three-roller mill rack 21.

[0028] In the embodiment, through the integrated design and precise angle matching, the motor power is efficiently and synchronously distributed to the bar and wire three-roller mill rack, and the structure comprises an integrated reduction distribution box 8, a first bevel gear box 13, a second bevel gear box 15, and a first coupling 12, a second coupling 17, a third coupling 16, a fourth coupling 14 and a fifth coupling 22.

[0029] The integrated reduction distribution box 8 is the power distribution center, and is internally provided with an input shaft 2, a first transmission shaft 3, a second transmission shaft 9, a first output shaft 10, a second output shaft 18 and a third output shaft 19. The core function of the input shaft 2 is to receive the external power transmitted by the motor, and then uniformly distribute the single power to the three output shafts through the gear set in the box. The angle between the first output shaft 10 and the second output shaft 18 is strictly controlled to be 30°, and the angle between the second output shaft 18 and the third output shaft 19 is also 30°.

[0030] The input shaft of the first bevel gear box 13 is tightly connected with the first output shaft 10 of the integrated reduction distribution box 8 through the first coupling 12, and the output shaft is connected with one input shaft of the bar and wire three-roller mill rack 21 through the fourth coupling 14, and the output shaft and the input shaft of the first bevel gear box 13 always maintain an angle of 30°, which is used for accurately converting the power transmission direction. The input shaft of the second bevel gear box 15 is connected with the third output shaft 19 of the integrated reduction distribution box 8 through the third coupling 16, and the output shaft is connected with another input shaft of the bar and wire three-roller mill rack 21 through the fifth coupling 22, and the output shaft and the input shaft are also at an angle of 30°, which forms a symmetrical direction conversion structure with the first bevel gear box 13.

[0031] The second output shaft 18 of the integrated reduction distribution box 8 is directly connected with the third input shaft of the bar and wire three-roller mill rack 21 through the second coupling 17 without passing through the bevel gear box. Finally, the output shafts of the first bevel gear box 13, the second bevel gear box 15 and the second output shaft 18 of the integrated reduction distribution box 8 are distributed at an angle of 120° in space, which fully corresponds to the three input shafts of the bar and wire three-roller mill rack 21, and ensures that the power can be accurately and synchronously transmitted to the bar and wire three-roller mill rack 21, meeting the core requirement of synchronous rotation of the three input shafts of the three-roller mill.

[0032] In actual operation, the motor power is first transmitted to the input shaft 2 of the integrated reduction distribution box 8, and the input shaft 2 distributes the power to the first output shaft 10, the second output shaft 18 and the third output shaft 19 through the gear set in the box. Among them, the power of the second output shaft 18 is directly transmitted to the corresponding input shaft of the bar and wire three-roller mill rack 21 through the second coupling 17; the power of the first output shaft 10 is transmitted to the first bevel gear box 13 through the first coupling 12, and after a 30° angle conversion, it is transmitted to another input shaft of the bar and wire three-roller mill rack 21 through the fourth coupling 14; the power of the third output shaft 19 is transmitted to the second bevel gear box 15 through the third coupling 16, and after a 30° angle conversion, it is transmitted to the third input shaft of the bar and wire three-roller mill rack 21 through the fifth coupling 22. The three powers form an angle of 120° in space, realizing the synchronous rotation of the three input shafts of the mill rack and ensuring the stability and precision of the rolling process.

[0033] The system discards the complex structure of the traditional three-roller mill which adopts an overall modular external reduction box, and cooperates the integrated reduction distribution box with the bevel gear box with precise angle design, simplifies the transmission path, reduces the design, manufacturing and assembly difficulty, reduces the overall cost of the equipment, is convenient for daily maintenance, and significantly improves the operation efficiency and service life of the equipment.

[0034] In some embodiments, the gear set in the integrated reduction distribution box 8 comprises: a first transmission gear 1 fixedly installed on the input shaft 2; a second transmission gear 5 and a third transmission gear 4 fixedly installed on the first transmission shaft 3, the second transmission gear 5 being engaged with the first transmission gear 1; a fourth transmission gear 6 and a fifth transmission gear 11 fixedly installed on the second transmission shaft 9, the fourth transmission gear 6 being engaged with the third transmission gear 4; a sixth transmission gear 20 fixedly installed on the second output shaft 18, the sixth transmission gear 20 being engaged with the fifth transmission gear 11; The two ends of the second transmission shaft 9 are respectively connected with the first output shaft 10 and the third output shaft 19 through a pair of transmission bevel gears 7.

[0035] In the embodiment, the gear set in the integrated deceleration distribution box 8 is the core component for realizing accurate power distribution, which includes the first transmission gear 1 fixedly installed on the input shaft 2, the second transmission gear 5 and the third transmission gear 4 fixedly installed on the first transmission shaft 3, the fourth transmission gear 6 and the fifth transmission gear 11 fixedly installed on the second transmission shaft 9, the sixth transmission gear 20 fixedly installed on the second output shaft 18, and the transmission bevel gears 7 for connecting the second transmission shaft 9 with the first output shaft 10 and the third output shaft 19.

[0036] From the connection relationship, the second transmission gear 5 and the first transmission gear 1 are engaged with each other to form the key engagement pair for transmitting power from the input shaft 2 to the first transmission shaft 3; the fourth transmission gear 6 and the third transmission gear 4 are engaged with each other to realize the transmission of power from the first transmission shaft 3 to the second transmission shaft 9; the sixth transmission gear 20 and the fifth transmission gear 11 are engaged with each other to constitute the path for transmitting power from the second transmission shaft 9 to the second output shaft 18; in addition, the two ends of the second transmission shaft 9 are respectively connected with the first output shaft 10 and the third output shaft 19 through a pair of transmission bevel gears 7, and the transmission direction is converted and transmitted through the engagement of the bevel gears, so as to ensure that the power can be distributed from the second transmission shaft 9 to the first output shaft 10 and the third output shaft 19.

[0037] In the power transmission process, after the motor power is transmitted to the input shaft 2, the input shaft 2 drives the first transmission gear 1 on it to rotate. Since the first transmission gear 1 is engaged with the second transmission gear 5, the rotation of the first transmission gear 1 drives the second transmission gear 5 to rotate, thereby driving the first transmission shaft 3 to rotate synchronously. When the first transmission shaft 3 rotates, the third transmission gear 4 on it rotates, and since the third transmission gear 4 is engaged with the fourth transmission gear 6, the fourth transmission gear 6 is driven and the second transmission shaft 9 rotates.

[0038] After the second transmission shaft 9 rotates, the power is distributed through two paths: the first path is that the second transmission shaft 9 drives the fifth transmission gear 11 on it to rotate, the fifth transmission gear 11 is engaged with the sixth transmission gear 20, thereby driving the sixth transmission gear 20 to rotate, and then driving the second output shaft 18 to rotate, realizing the transmission of power to the second output shaft 18; the second path is that the transmission bevel gears 7 at the two ends of the second transmission shaft 9 are respectively engaged with the transmission bevel gears 7 on the first output shaft 10 and the third output shaft 19, and the rotation of the second transmission shaft 9 is transmitted to the first output shaft 10 and the third output shaft 19 through the engagement of the bevel gears, thereby completing the distribution of power to the three output shafts.

[0039] This gear set structure design has multiple advantages: first, through the coordinated matching of multiple sets of cylindrical gears and bevel gears, precise distribution of single input power to three outputs is achieved, the transmission ratio is stable, synchronous rotation of the three output shafts can be ensured, and the strict requirements of the three-roller rolling mill on power synchronicity are met; second, the gear set is integrated inside the integrated reduction distribution box 8, the structure is compact, the number of external transmission components is reduced, the equipment volume and weight are reduced, the influence of the external environment on the gear transmission is avoided, and the reliability and service life of the transmission system are improved; finally, the combined transmission of cylindrical gears and bevel gears has high efficiency, which can effectively reduce energy loss in the power transmission process, improve the utilization rate of motor power, and reduce equipment operation energy consumption.

[0040] In some embodiments, the first output shaft 10, the second transmission shaft 9, the third output shaft 19 and the transmission bevel gear 7 inside the integrated reduction distribution box 8 are connected by interference assembly or key connection; The second output shaft 18 and the sixth transmission gear 20 are connected by interference assembly or key connection; The first transmission shaft 3 and the second transmission gear 5 and the third transmission gear 4 are connected by interference assembly or key connection; The second transmission shaft 9 and the fourth transmission gear 6 and the fifth transmission gear 11 are connected by interference assembly or key connection; The input shaft 2 and the first transmission gear 1 are connected by interference assembly or key connection.

[0041] In this embodiment, the connection mode between the shafts and gears, shafts and shaft couplings inside the integrated reduction distribution box 8 directly affects the stability and reliability of power transmission. The system uses interference assembly or key connection to ensure firm connection and synchronous rotation between components.

[0042] Specifically, the first output shaft 10, the second transmission shaft 9, the third output shaft 19 and the transmission bevel gear 7 inside the integrated reduction distribution box 8 are connected by interference assembly or key connection. Interference assembly realizes tight fit through reasonable interference between the hole shaft joint surfaces of components, can transmit larger torque, and the connection structure is simple, without additional fasteners, reducing the number of components and assembly complexity; key connection realizes synchronous rotation of shafts and gears through the cooperation of keys and key grooves, has the characteristics of convenient disassembly and assembly, stable torque transmission, and can select appropriate connection mode according to actual working condition requirements.

[0043] The second output shaft 18 and the sixth transmission gear 20 are also assembled by interference or keyed coupling, ensuring that the sixth transmission gear 20 can rotate stably with the second output shaft 18, avoiding relative sliding during transmission, and ensuring the efficiency and accuracy of power transmission. The first transmission shaft 3 and the second transmission gear 5 and the third transmission gear 4 are assembled by interference or keyed coupling, so that the first transmission shaft 3 can drive the two gears to rotate synchronously when rotating, avoiding transmission errors and component wear caused by relative motion between the gears and the shaft.

[0044] The second transmission shaft 9 and the fourth transmission gear 6 and the fifth transmission gear 11 are assembled by interference or keyed coupling, ensuring that the power of the second transmission shaft 9 can be efficiently transmitted to the two gears, and then transmitted to the second output shaft 18 and other components, ensuring the stability of power distribution. The input shaft 2 and the first transmission gear 1 are assembled by interference or keyed coupling, so that the power transmitted to the input shaft 2 by the motor can be completely transmitted to the first transmission gear 1, avoiding power loss or transmission lag at the input end.

[0045] In some embodiments, the first output shaft 10 of the integrated reduction distribution box 8 and the first coupling 12, the second output shaft 18 and the second coupling 17, and the third output shaft 19 and the third coupling 16 are all connected by interference or keyed coupling.

[0046] In this embodiment, the connection between the output shaft of the integrated reduction distribution box 8 and the coupling is the key link for power transmission from the distribution box to external components. In this system, the first output shaft 10 and the first coupling 12, the second output shaft 18 and the second coupling 17, and the third output shaft 19 and the third coupling 16 are all connected by interference or keyed coupling, ensuring efficient and stable power transmission.

[0047] From the structure and function, the first output shaft 10 is connected to the input shaft of the first bevel gear box 13 through the first coupling 12, the second output shaft 18 is connected to the input shaft of the rod wire three-roll mill rack 21 through the second coupling 17, and the third output shaft 19 is connected to the input shaft of the second bevel gear box 15 through the third coupling 16. Therefore, the quality of the connection between the output shaft and the coupling directly affects the transmission effect of power to the bevel gear box and the mill rack.

[0048] The advantages of this connection design are reflected in many aspects: first, the high reliability of interference assembly or keyed coupling ensures that there is no relative sliding during power transmission, avoiding power loss and component wear, and improving transmission efficiency; In some embodiments, the input shaft of the first bevel gear box 13 and the first coupling 12, and the output shaft and the fourth coupling 14 are all connected by interference or keyed coupling.

[0049] In the embodiment, the first bevel gear box 13 is the key component of power direction conversion, and the coupling quality with the shaft coupling directly affects the accuracy and stability of power transmission. In the system, the input shaft and the first shaft coupling 12, and the output shaft and the fourth shaft coupling 14 of the first bevel gear box 13 are connected by interference assembly or key coupling, so that there is no relative displacement of power in the transmission process, and accurate direction conversion is realized.

[0050] From the coupling function, the input shaft of the first bevel gear box 13 receives power from the first output shaft 10 of the integrated reduction distribution box 8 through the first shaft coupling 12, and after 30° angle conversion, the power is transmitted to the input shaft of the bar and wire three-roll mill rack 21 through the coupling of the output shaft and the fourth shaft coupling 14, so the coupling of the input shaft and the output shaft must meet the dual requirements of torque transmission and angle conversion.

[0051] In the power transmission process, the first shaft coupling 12 transmits the power of the first output shaft 10 of the integrated reduction distribution box 8 to the input shaft of the first bevel gear box 13, the input shaft drives the gear set in the box to rotate, realizes 30° power direction conversion, and the converted power is transmitted to the fourth shaft coupling 14 through the output shaft, and then transmitted to the input shaft of the bar and wire three-roll mill rack 21 through the fourth shaft coupling 14. Since the input shaft and the output shaft are connected by interference assembly or key coupling, there is no relative sliding in the power transmission process, which ensures the accuracy of angle conversion, so that the axis of the converted power can be accurately aligned with the input shaft of the mill rack, meeting the strict requirements of the three-roll mill on the power direction.

[0052] In some embodiments, the input shaft and the third shaft coupling 16, and the output shaft and the fifth shaft coupling 22 of the second bevel gear box 15 are connected by interference assembly or key coupling.

[0053] In the embodiment, the second bevel gear box 15 and the first bevel gear box 13 form a symmetrical power direction conversion structure, and the coupling with the shaft coupling also adopts interference assembly or key coupling. Specifically, the input shaft and the third shaft coupling 16, and the output shaft and the fifth shaft coupling 22 of the second bevel gear box 15 are connected by interference assembly or key coupling, which ensures the accurate transmission and direction conversion of power from the third output shaft 19 of the integrated reduction distribution box 8 to the bar and wire three-roll mill rack 21.

[0054] From the functional requirements, the second bevel gear box 15 needs to receive power from the third output shaft 19 of the integrated reduction distribution box 8, and after 30° angle conversion, the power is transmitted to the other input shaft of the bar and wire three-roll mill rack 21, and the power of the first bevel gear box 13 and the second output shaft 18 forms a 120° angle distribution, so the coupling of the input shaft and the output shaft must meet the requirements of stable torque transmission and accurate angle conversion.

[0055] The interference assembly in the connection of the second bevel gear box 15 realizes the tight connection through the interference assembly of the input shaft and the third coupling 16, the output shaft and the matching surface of the fifth coupling 22, can effectively transmit the torque, has good centering effect, ensures that the axis of the input shaft is stable when receiving power, the axis angle of the output shaft is accurate after transmitting and converting power, avoids the power direction deviation caused by loose connection, and affects the distribution precision of the included angle of three power. The key connection ensures that the input shaft and the third coupling 16, the output shaft and the fifth coupling 22 rotate synchronously through the mechanical constraint of the key, is convenient to disassemble and assemble, and when the coupling or the bevel gear box fails, the equipment downtime can be reduced.

[0056] In actual operation, the third coupling 16 transmits the power of the third output shaft 19 of the integrated speed reduction distribution box 8 to the input shaft of the second bevel gear box 15, the input shaft drives the rotation of the gear set in the box, completes the 30° power direction conversion, and the converted power is transmitted to the corresponding input shaft of the bar and wire three-roller mill rack 21 through the output shaft and the fifth coupling 22. Because the connection mode is reliable, there is no relative sliding during power transmission, and the angle conversion precision can be effectively guaranteed, so that the power axis of the output shaft of the second bevel gear box 15 forms a precise 120° included angle with the power axes of the output shaft and the second output shaft 18 of the first bevel gear box 13, meeting the needs of synchronous rotation of the three input shafts of the three-roller mill.

[0057] The advantages of the connection design are: First, the high-reliability connection mode ensures the efficiency and stability of power transmission, reduces energy loss and part wear; Second, the precise angle conversion guarantees the spatial distribution precision of the three power, and improves the stability of the rolling process and the product quality; In some embodiments, the three input shafts of the bar and wire three-roller mill rack 21 are connected to the second coupling 17, the fourth coupling 14 and the fifth coupling 22 through spline connection.

[0058] In this embodiment, the bar and wire three-roller mill rack 21 is the component that finally performs the rolling action, and its connection with the coupling directly determines the final effect of power transmission. In the system, the three input shafts of the bar and wire three-roller mill rack 21 are connected to the second coupling 17, the fourth coupling 14 and the fifth coupling 22 through spline connection, ensuring that the three power can be transmitted to the rack synchronously and stably to drive the roller to complete the rolling action.

[0059] From the point of view of the coupling function, the three input shafts of the bar and wire three-roll mill rack 21 respectively receive power from the second output shaft 18 (through the second coupling 17), the output shaft of the first bevel gear box 13 (through the fourth coupling 14), and the output shaft of the second bevel gear box 15 (through the fifth coupling 22), and the three input shafts need to rotate synchronously, so the coupling mode must have high torque transmission capacity, no relative sliding characteristics, and be able to adapt to vibration and impact during rolling.

[0060] The spline coupling has the characteristics of strong load capacity, good centering, and high fatigue strength, and can adapt to the high-speed heavy-load working condition of the bar and wire rolling process. During rolling, the second coupling 17 transmits the power of the second output shaft 18 to the first input shaft of the bar and wire three-roll mill rack 21, the fourth coupling 14 transmits the power of the output shaft of the first bevel gear box 13 to the second input shaft of the bar and wire three-roll mill rack 21, and the fifth coupling 22 transmits the power of the output shaft of the second bevel gear box 15 to the third input shaft of the bar and wire three-roll mill rack 21. Due to the use of spline coupling, there is no relative sliding during the transmission of the three powers, and the three input shafts can realize strict synchronous rotation, ensuring that the rolls are uniformly stressed when rolling the bar and wire, and avoiding product size deviation or surface quality problems caused by speed difference of the input shafts.

[0061] In some embodiments, the coupling uses a diaphragm coupling. When the output shaft of the integrated reduction distribution box 8 rotates, it drives the diaphragm coupling to rotate synchronously. The diaphragm coupling uses the elastic deformation of its metal diaphragm to compensate for the relative displacement between the two shafts, such as radial, axial and angular displacement, avoiding the misalignment of the shaft system caused by installation errors or vibration during equipment operation, protecting the output shaft and coupling components from additional stress, and prolonging the service life of the equipment.

[0062] In some embodiments, the integrated reduction distribution box 8, the first bevel gear box 13 and the second bevel gear box 15 all use independent oil pool lubrication systems.

[0063] In this embodiment, the integrated reduction distribution box 8, the first bevel gear box 13 and the second bevel gear box 15 all use independent oil pool lubrication systems. Through independent lubrication design, it ensures that each transmission component can obtain precise and efficient lubrication, and improves the service life of the components and the stability of the system operation.

[0064] From the lubrication requirements, the integrated reduction distribution box 8 contains multiple groups of cylindrical gears, bevel gears and transmission shafts, the first bevel gear box 13 and the second bevel gear box 15 contain gear sets for angle conversion, these components will generate friction and wear during high-speed rotation, and need continuous and stable lubrication to reduce the friction coefficient, take away heat and prevent component corrosion. Due to the different speeds, loads and lubrication requirements of each component, the independent oil pool lubrication system can accurately control the type, amount and lubrication method of lubricating oil according to the specific working conditions of each box, to meet the lubrication requirements of different components.

[0065] The structural design of the independent oil pool lubrication system is targeted: Each oil pool is equipped with an independent oil inlet, oil outlet, oil level observation window and oil temperature control device, which facilitates operators to monitor the oil level and temperature of the lubricating oil in the oil pool in real time, and replenish or replace the lubricating oil in time. The volume of the oil pool of the integrated reduction distribution box 8 and the amount of lubricating oil are designed according to the number and size of the gears and shafts in the box, to ensure that the gear sets can be fully immersed in oil during rotation and form a stable oil film; the oil pool of the first bevel gear box 13 and the second bevel gear box 15 optimizes the flow path of the lubricating oil according to the structural characteristics of the internal gear sets, to ensure that the gear meshing parts can be continuously lubricated during angle conversion.

[0066] In some embodiments, the system evenly distributes the single power input from the motor into three synchronous outputs through the integrated reduction distribution box 8, and transmits it to the three input shafts of the bar and wire three-high mill rack 21 arranged at an angle of 120° through the first bevel gear box 13, the second bevel gear box 15 and the second coupling 17.

[0067] In this embodiment, the single power input from the motor is evenly distributed into three synchronous outputs through the integrated reduction distribution box 8, the bevel gear box and the coupling, and accurately transmitted to the three input shafts of the bar and wire three-high mill rack 21 arranged at an angle of 120°, achieving efficient, synchronous and stable power distribution and transmission.

[0068] From the power distribution logic, the single power input from the motor is first transmitted to the input shaft 2 of the integrated reduction distribution box 8, and through the multi-stage transmission and distribution of the gear set in the box, the power is evenly distributed to the first output shaft 10, the second output shaft 18 and the third output shaft 19. The transmission ratio of the gear set is precisely calculated to ensure that the speeds of the three output shafts are completely consistent, achieving synchronous distribution of power. The power of the first output shaft 10 and the third output shaft 19 is respectively converted by 30° through the first bevel gear box 13 and the second bevel gear box 15, and the power of the second output shaft 18 is directly transmitted. The three powers finally form an angle of 120° in space, which completely matches the three input shafts of the bar and wire three-high mill rack 21.

[0069] The coordination in the power transmission process is reflected in multiple links: Firstly, the gear set in the integrated reduction distribution box 8 realizes smooth transition of power from single input to three outputs through the coordination of cylindrical gears and bevel gears, the transmission ratio is stable, and the rotational speed deviation of the three output shafts is controlled within a very small range, meeting the strict requirements of three-roller rolling mills on synchronization; secondly, the angle conversion accuracy of the first and second bevel gear boxes 13 and 15 is highly consistent, both being 30°, and the 30° included angle design of the output shaft of the integrated reduction distribution box 8 forms coordination, ensuring the accurate distribution of the final 120° included angle of the three powers and avoiding uneven stress on the input shaft of the rolling mill stand due to angle deviation.

[0070] The advantages of this coordinated design are: Firstly, it realizes efficient distribution and transmission of power, and the single input power has no obvious loss after distribution, and the rotational speed and torque of the three output powers are completely consistent, ensuring the synchronous rotation of the three input shafts of the rolling mill stand and improving the dimensional accuracy and surface quality of the rolled products; Secondly, it simplifies the structure of the transmission system, replaces the traditional complex integrated modular and external reduction box combination through the integrated design of the reduction distribution box and the angle conversion function of the bevel gear box, reduces the number of transmission components, and reduces the size and weight of the equipment; Thirdly, it improves the reliability and adaptability of the system, and the coordinated components can adapt to different rolling conditions, such as different specifications of rod and wire rolling requirements. By adjusting the transmission ratio of the gears in the integrated reduction distribution box, different production requirements can be met, enhancing the versatility of the equipment.

[0071] In addition, the coordinated design also facilitates the overall optimization and upgrading of the system. When the performance of the equipment needs to be improved, improvements can be made to a certain component of the integrated reduction distribution box, bevel gear box or coupling, without the need for large-scale modification of the entire system, reducing the cost and difficulty of equipment upgrading and providing convenience for long-term use and technical iteration of the equipment.

[0072] The embodiment of the application provides a reduction transmission distribution method for a rod and wire three-roller rolling mill adopting the system described in any of the above. The power input by the motor is received through the input shaft 2 of the integrated reduction distribution box 8; The power is synchronously distributed to the first output shaft 10, the second output shaft 18 and the third output shaft 19 through the first transmission shaft 3, the second transmission shaft 9 and the gear set inside the integrated reduction distribution box 8; The power from the first output shaft 10 is transmitted to the first bevel gear box 13 through the first coupling 12, and after the direction is converted, it is output to the rod and wire three-roller rolling mill stand 21 through the fourth coupling 14; The power from the third output shaft 19 is transmitted to the second bevel gear box 15 through the third coupling 16, and is output to the bar and wire three-roll mill rack 21 through the fifth coupling 22 after being converted in direction; The power from the second output shaft 18 is directly output to the bar and wire three-roll mill rack 21 through the second coupling 17; The direction of the power is adjusted through the first bevel gear box 13 and the second bevel gear box 15, so that the power axes of the three input shafts finally transmitted to the bar and wire three-roll mill rack 21 form an angle of 120° with each other.

[0073] In the embodiment, the power reduction distribution method of the bar and wire three-roll mill is based on the above-mentioned power reduction distribution system, and through precise power receiving, distribution, direction conversion and transmission steps, the motor power is efficiently and synchronously transmitted to the three-roll mill rack. The specific steps are as follows: First step, power receiving. The power input by the motor is received through the input shaft 2 of the integrated power reduction distribution box 8. The input shaft 2 serves as the starting end of power transmission, and its connection with the output shaft of the motor ensures stable power input, laying a foundation for subsequent power distribution. At this time, the input shaft 2 drives the first transmission gear 1 on it to rotate, converting the rotary power of the motor into gear transmission power, and starting the power distribution process.

[0074] Second step, power distribution. The power is synchronously distributed to the first output shaft 10, the second output shaft 18 and the third output shaft 19 through the first transmission shaft 3, the second transmission shaft 9 and the gear set inside the integrated power reduction distribution box 8. Specifically, the first transmission gear 1 meshes with the second transmission gear 5 on the first transmission shaft 3 to drive the first transmission shaft 3 to rotate; the third transmission gear 4 on the first transmission shaft 3 meshes with the fourth transmission gear 6 on the second transmission shaft 9 to transmit power to the second transmission shaft 9; the second transmission shaft 9 distributes power through two paths: one is through the fifth transmission gear 11 and the sixth transmission gear 20 on the second output shaft 18 to transmit power to the second output shaft 18; the other is through the transmission bevel gears 7 at both ends to mesh with the transmission bevel gears 7 on the first output shaft 10 and the third output shaft 19 to transmit power to the first output shaft 10 and the third output shaft 19. In this process, the transmission ratio of the gear set is precisely calculated to ensure that the rotational speeds of the three output shafts are completely consistent, achieving synchronous distribution of power.

[0075] Third step, the first power transmission and direction conversion. The power from the first output shaft 10 is transmitted to the first bevel gear box 13 through the first coupling 12, the input shaft of the first bevel gear box 13 is tightly coupled with the first coupling 12, and the internal gear set is driven to rotate after receiving the power, realizing 30° power direction conversion. The converted power is transmitted to the fourth coupling 14 through the output shaft of the first bevel gear box 13, and then output to one input shaft of the bar and wire three-roller mill rack 21 through the fourth coupling 14. The coupling compensates for the shafting deviation through elastic deformation during transmission, ensuring stable power transmission.

[0076] Fourth step, the second power transmission and direction conversion. The power from the third output shaft 19 is transmitted to the second bevel gear box 15 through the third coupling 16, the input shaft of the second bevel gear box 15 is coupled with the third coupling 16, and the internal gear set is driven to rotate after receiving the power, also completing 30° power direction conversion. The converted power is transmitted to the fifth coupling 22 through the output shaft of the second bevel gear box 15, and then output to the other input shaft of the bar and wire three-roller mill rack 21 through the fifth coupling 22. The direction conversion accuracy of this step is consistent with that of the third step, ensuring that the angle conversion effects of the two power paths are the same.

[0077] Fifth step, the third power direct transmission. The power from the second output shaft 18 is directly output to the third input shaft of the bar and wire three-roller mill rack 21 through the second coupling 17. Since the direction of the power from the second output shaft 18 meets the requirements of the input shaft of the mill rack, it does not need to be converted through the bevel gear box and is directly transmitted through the coupling, simplifying the transmission path and improving the power transmission efficiency.

[0078] Sixth step, power axis angle calibration. The power direction is adjusted through the first bevel gear box 13 and the second bevel gear box 15, so that the power axes of the three input shafts of the bar and wire three-roller mill rack 21 form a 120° angle with each other. Since the included angle between the first output shaft 10 and the second output shaft 18, and the second output shaft 18 and the third output shaft 19 is 30°, after 30° angle conversion through the bevel gear box, the three power paths form a precise 120° angle in space, which completely corresponds to the three input shafts of the bar and wire three-roller mill rack 21, ensuring that the three input shafts rotate synchronously and meet the rolling requirements.

[0079] The advantages of this method are: First, the power distribution and transmission process is clear. Through precise control of multiple steps, the efficient conversion from single-path power to three-path synchronous power is achieved, ensuring the synchronization of the mill stand input shaft. Second, the direction conversion accuracy is high. Through the standardized design of the angled transmission box and the cooperation of the coupling, the angular accuracy of the power shaft is guaranteed, improving the quality of rolled products. Third, the method is highly versatile and can be applied to three-roll mills for bar and wire rod of different specifications. By adjusting the gear transmission ratio or angle conversion parameters, different production needs can be met. At the same time, it simplifies the design and manufacturing process of the equipment, reduces costs, and facilitates large-scale promotion and application.

[0080] The integrated reduction gearbox 8, the first oblique angle transmission box 13, and the second oblique angle transmission box 15 are all welded together, and the boxes have internal reinforcing ribs. These reinforcing ribs improve the box's resistance to deformation, adapt to the vibration environment of the rolling mill, and extend its service life. This forming process is mature and easy to manufacture.

[0081] All gears in the gear set are treated with carburizing and quenching, with a tooth surface roughness Ra≤1.6μm; requirements for gear carburizing and quenching treatment and tooth surface roughness: Carburizing and quenching can significantly improve the hardness and wear resistance of gears. High-precision machining of the gear surface can reduce meshing friction loss, improve transmission efficiency, reduce noise, and meet the wear resistance and transmission accuracy requirements of gears for long-term high-load operation of three-roll mills.

[0082] The keyed connection adopts a double-key symmetrical arrangement structure with a center angle of 180° between the two keys. The double-key symmetrical arrangement connection can improve the torque transmission capacity compared with the single key structure. The symmetrical arrangement can make the shaft and gear bear the force evenly, avoid connection failure caused by local stress concentration, adapt to the high torque power transmission scenario of the system, and ensure the reliability of the connection.

[0083] The first angled transmission box 13 is equipped with a temperature sensor to monitor the oil temperature inside the box in real time. Temperature sensor for the first angled transmission box: Real-time oil temperature monitoring can promptly detect problems such as insufficient lubrication or abnormal gear wear. The temperature measurement range covers all operating conditions of the equipment, providing data support for equipment maintenance and preventing transmission failures caused by high temperatures.

[0084] The oblique angle transmission box has heat dissipation fins, and the internal gears are designed with helical or spiral gears to reduce noise and increase gear strength.

[0085] The outer side of the second angled transmission box 15 is equipped with heat dissipation fins. The heat dissipation fins of the second angled transmission box increase the heat dissipation area and improve natural heat dissipation efficiency. The fin size parameters have been optimized to enhance the heat dissipation effect without increasing the volume excessively, thus meeting the heat generation requirements of high-speed transmission.

[0086] The output shaft end of the bevel gear box is integrated with an encoder interface for real-time monitoring of rotation speed and synchronization.

[0087] The diaphragm of the diaphragm coupling is made of stainless steel 304.

[0088] Stainless steel 304 diaphragm and parameter design: Stainless steel 304 has good elasticity and corrosion resistance, the number and thickness of the diaphragm match the power transmission requirements of the system, which can compensate for the shaft deviation through elastic deformation, and can also ensure sufficient strength to avoid diaphragm rupture failure.

[0089] The lubrication system is equipped with an automatic oil supplementing device, which automatically supplements lubricating oil when the oil level is below the preset value.

[0090] Lubrication system automatic oil supplementing device: Automatic oil supplementing can avoid lubrication failure caused by untimely manual oil supplementing, and the oil supplementing precision control can ensure stable lubricating oil level, maintain optimal lubrication effect, reduce maintenance workload, and improve equipment operation stability.

[0091] The rotation speed deviation of the three-way output power is ≤±0.5%, and the torque distribution error is ≤±2%. Output power precision requirements: The rotation speed and torque distribution error range are clearly defined to ensure the synchronization and uniformity of the three-way power, meet the strict requirements of the three-roll rolling mill on rolling precision, and improve the product size consistency. This precision index is achieved through precise design and assembly of the gear set.

[0092] The system also integrates a PLC control system for real-time adjustment of motor rotation speed and monitoring of torque balance of the three-way output.

[0093] During power transmission, the temperature sensor is used to monitor the oil temperature of the bevel gear box in real time, and when the oil temperature exceeds the set threshold, the heat dissipation enhancement mode is started to improve the heat dissipation efficiency of the lubrication system.

[0094] Oil temperature monitoring and heat dissipation enhancement mode: The heat dissipation efficiency is adjusted through temperature feedback to cool down in time when the oil temperature is abnormal, avoid lubricating oil deterioration due to high temperature, ensure the continuous and effective lubrication system, prolong the service life of the parts, and improve the self-adaptive operation capability of the system.

[0095] Below is a specific embodiment: Referring to Figure 1 The three-roll rolling mill reduction transmission distribution system of the present application mainly includes an integrated reduction distribution box 8, a first bevel gear box 13, a second bevel gear box 15, a first coupling 12, a second coupling 17, a third coupling 16, a fourth coupling 14, and a fifth coupling 22.

[0096] The integrated reduction distribution box 8 is the power distribution center of the whole system. Inside it, there are input shaft 2, first transmission shaft 3, second transmission shaft 9, first output shaft 10, second output shaft 18 and third output shaft 19. The input shaft 2 is used to connect the motor (not shown) to receive power. The first output shaft 10 and the second output shaft 18 form a 30° angle, and the second output shaft 18 and the third output shaft 19 also form a 30° angle.

[0097] The transmission path of power in the integrated reduction distribution box 8 is as follows: the first transmission gear 1 on the input shaft 2 meshes with the second transmission gear 5 on the first transmission shaft 3 to transmit power to the first transmission shaft 3. The third transmission gear 4 on the first transmission shaft 3 meshes with the fourth transmission gear 6 on the second transmission shaft 9 to transmit power to the second transmission shaft 9. The fifth transmission gear 11 on the second transmission shaft 9 meshes with the sixth transmission gear 20 on the second output shaft 18 to directly transmit part of the power to the second output shaft 18. At the same time, the two ends of the second transmission shaft 9 are respectively connected to the first output shaft 10 and the third output shaft 19 through a pair of transmission bevel gears 7 to distribute power to the first output shaft 10 and the third output shaft 19. In this way, the single input power is synchronized and evenly distributed to three outputs.

[0098] The transmission path of power in the integrated reduction distribution box 8 is as follows: the first transmission gear 1 on the input shaft 2 meshes with the second transmission gear 5 on the first transmission shaft 3 to transmit power to the first transmission shaft 3. The third transmission gear 4 on the first transmission shaft 3 meshes with the fourth transmission gear 6 on the second transmission shaft 9 to transmit power to the second transmission shaft 9. The fifth transmission gear 11 on the second transmission shaft 9 meshes with the sixth transmission gear 20 on the second output shaft 18 to directly transmit part of the power to the second output shaft 18. At the same time, the two ends of the second transmission shaft 9 are respectively connected to the first output shaft 10 and the third output shaft 19 through a pair of transmission bevel gears 7 to distribute power to the first output shaft 10 and the third output shaft 19. In this way, the single input power is synchronized and evenly distributed to three outputs.

[0099] The input shaft of the first bevel gear box 13 is connected to the first output shaft 10 of the integrated reduction distribution box 8 through the first coupling 12. The output shaft and the input shaft of the first bevel gear box 13 form a 30° angle, and the output shaft is connected to one of the input shafts of the bar and wire three-roller mill rack 21 through the fourth coupling 14.

[0100] The input shaft of the second bevel gear box 15 is connected to the third output shaft 19 of the integrated reduction distribution box 8 through the third coupling 16. The output shaft and the input shaft of the second bevel gear box 15 also form a 30° angle, and the output shaft is connected to the other input shaft of the bar and wire three-roller mill rack 21 through the fifth coupling 22.

[0101] The second output shaft 18 of the integrated reduction distribution box 8 is directly connected to the third input shaft of the bar and wire three-roller mill rack 21 through the second coupling 17.

[0102] Through the above connection, the output shaft of the first bevel gear box 13, the output shaft of the second bevel gear box 15 and the second output shaft 18 of the integrated reduction distribution box 8 form a 120° angle in space, perfectly matching the requirements of the three input shafts of the bar and wire three-roller mill rack 21.

[0103] The input and output shafts of the first bevel gear box 13 and the second bevel gear box 15 and the corresponding couplings, and the input shaft of the rod wire three-roller mill rack 21 and the corresponding couplings, are all assembled with interference or keyed, to ensure the rigidity and precision of the connection.

[0104] In addition, the integrated reduction distribution box 8, the first bevel gear box 13 and the second bevel gear box 15 all use independent oil pool lubrication systems, to facilitate independent maintenance and management of lubrication.

[0105] The present application uniformly and synchronously delivers the power input by the motor to the rack of the rod wire three-roller mill through the precise matching of the gear transmission and the couplings, the transmission path is clear, the structure is compact, and the problems of complex traditional transmission mode, high cost and difficult maintenance are effectively solved.

[0106] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described devices, apparatuses and units can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0107] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of various equivalent modifications or replacements within the technical range disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A reduction transmission distribution system for a three-roll bar and wire rod mill, characterized in that, include: An integrated speed reduction distribution box (8) is provided with an input shaft (2), a first transmission shaft (3), a second transmission shaft (9), a first output shaft (10), a second output shaft (18), and a third output shaft (19). The input shaft (2) is used to receive the power transmitted by the motor and distribute the power to the first output shaft (10), the second output shaft (18), and the third output shaft (19) through a gear set. The included angle between the first output shaft (10) and the second output shaft (18) is 30°, and the included angle between the second output shaft (18) and the third output shaft (19) is 30°. The first oblique angle transmission box (13) has its input shaft connected to the first output shaft (10) of the integrated reduction distribution box (8) via the first coupling (12), and its output shaft connected to one input shaft of the bar and wire rod three-roll mill stand (21) via the fourth coupling (14). The output shaft of the first oblique angle transmission box (13) forms a 30° angle with the input shaft. The second oblique angle transmission box (15) has its input shaft connected to the third output shaft (19) of the integrated reduction distribution box (8) via a third coupling (16), and its output shaft connected to another input shaft of the bar and wire rod three-roll mill stand (21) via a fifth coupling (22). The output shaft of the second oblique angle transmission box (15) forms a 30° angle with the input shaft. The second output shaft (18) of the integrated reduction gearbox (8) is connected to the third input shaft of the bar and wire three-roll mill stand (21) via the second coupling (17); The output shafts of the first oblique angle transmission box (13), the output shaft of the second oblique angle transmission box (15), and the second output shaft (18) of the integrated reduction distribution box (8) are distributed at a 120° angle in space, directly corresponding to the three input shafts of the bar and wire rod three-roll mill stand (21).

2. The reduction transmission distribution system for a three-roll bar and wire rod mill according to claim 1, characterized in that, The gear set inside the integrated reduction gearbox (8) includes: The first transmission gear (1) is fixedly installed on the input shaft (2); A second transmission gear (5) and a third transmission gear (4) are fixedly installed on the first transmission shaft (3), and the second transmission gear (5) meshes with the first transmission gear (1); A fourth transmission gear (6) and a fifth transmission gear (11) are fixedly installed on the second transmission shaft (9), wherein the fourth transmission gear (6) meshes with the third transmission gear (4); A sixth transmission gear (20) is fixedly mounted on the second output shaft (18), and the sixth transmission gear (20) meshes with the fifth transmission gear (11); The two ends of the second drive shaft (9) are connected to the first output shaft (10) and the third output shaft (19) respectively through a pair of drive bevel gears (7).

3. The reduction transmission distribution system for a three-roll bar and wire rod mill according to claim 2, characterized in that, The first output shaft (10), the second transmission shaft (9), and the third output shaft (19) in the integrated reduction gearbox (8) are connected to the transmission bevel gear (7) by interference fit or key. The second output shaft (18) and the sixth transmission gear (20) are connected by an interference fit or a key; The first drive shaft (3) is connected to the second drive gear (5) and the third drive gear (4) by interference fit or key; The second drive shaft (9) is connected to the fourth drive gear (6) and the fifth drive gear (11) by interference fit or key; The input shaft (2) is connected to the first transmission gear (1) by interference fit or key.

4. The reduction transmission distribution system for a three-roll bar and wire rod mill according to claim 1, characterized in that, The first output shaft (10) of the integrated speed reduction distribution box (8) is connected to the first coupling (12), the second output shaft (18) is connected to the second coupling (17), and the third output shaft (19) is connected to the third coupling (16) by interference fit or key.

5. The reduction transmission distribution system for a three-roll bar and wire rod mill according to claim 1, characterized in that, The input shaft of the first angled transmission box (13) is connected to the first coupling (12), and the output shaft is connected to the fourth coupling (14) by interference fit or key.

6. The reduction transmission distribution system for a three-roll bar and wire rod mill according to claim 1, characterized in that, The input shaft of the second angled transmission box (15) is connected to the third coupling (16), and the output shaft is connected to the fifth coupling (22) by interference fit or key.

7. The reduction transmission distribution system for a three-roll bar and wire rod mill according to claim 1, characterized in that, The three input shafts of the bar and wire rod three-roll mill stand (21) are all connected to the second coupling (17), the fourth coupling (14) and the fifth coupling (22) by interference fit or key.

8. The reduction transmission distribution system for a three-roll bar and wire rod mill according to claim 1, characterized in that, The integrated reduction gearbox (8), the first oblique angle transmission box (13), and the second oblique angle transmission box (15) all adopt independent oil bath lubrication systems.

9. The reduction transmission distribution system for a three-roll bar and wire rod mill according to claim 1, characterized in that, The system distributes the single-path power input from the motor into three synchronous outputs through an integrated reduction gearbox (8), and transmits it to the three input shafts of the bar and wire rod three-roll mill stand (21) arranged at a 120° angle via the first oblique angle transmission box (13), the second oblique angle transmission box (15) and the second output shaft (18).

10. A method for speed reduction transmission distribution in a three-roll bar and wire rod mill employing the system described in any one of claims 1 to 9, characterized in that, The method includes: The motor input power is received through the input shaft (2) of the integrated gearbox (8); Power is synchronously distributed to the first output shaft (10), the second output shaft (18) and the third output shaft (19) through the first drive shaft (3), the second drive shaft (9) and the gear set inside the integrated reduction gearbox (8). The power from the first output shaft (10) is transmitted to the first angled transmission box (13) through the first coupling (12), and after the direction is changed by the first coupling (13), it is output to the bar and wire rod three-roll mill stand (21) through the fourth coupling (14). The power from the third output shaft (19) is transmitted to the second angled transmission box (15) through the third coupling (16), and after the direction is changed by the third coupling (22), it is output to the bar and wire rod three-roll mill stand (21). The power from the second output shaft (18) is directly output to the bar and wire rod three-roll mill stand (21) through the second coupling (17). The power direction is adjusted by the first oblique angle transmission box (13) and the second oblique angle transmission box (15) so that the power axes of the three input shafts that are finally transmitted to the bar and wire rod three-roll mill stand (21) form an angle of 120° with each other.

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