A drive shaft device based on a three-roll mill

Abstract

The present invention discloses a drive shaft device based on a three-roll mill, which relates to the technical field of steel rolling. It includes a frame, side frame one and side frame two. Three groups of pressing rollers are installed between side frame one and side frame two. A transmission mechanism is provided at the edge of side frame one, and a distance adjustment mechanism is provided on side frame one. The distance adjustment mechanism is connected to the transmission mechanism; the transmission mechanism includes housing one and housing two. A first intermediate shaft and a second intermediate shaft are distributively installed between housing one and housing two. There are two second intermediate shafts. The first intermediate shaft and the two second intermediate shafts are arranged in an equilateral triangle. Tooth-shaped insertion interfaces are provided at the ends of the first intermediate shaft and the second intermediate shafts, and tooth-shaped insertion rods are inserted into the tooth-shaped insertion interfaces; the reliable transmission of power before and after the adjustment of the distance between the pressing rollers is realized in combination with the distance adjustment mechanism, and the distance between each pressing roller and the adjacent pressing roller can be adjusted separately to adapt to a wider range of rolling requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of steel rolling, and in particular to a drive shaft device based on a three-roll mill. Background Technique

[0002] The frame of the three-roll mill uses three independent drive input shafts for transmission, which are arranged in an equilateral triangle around the drive rolls. During rolling, the steel passes through the gap between the three rolls. Compared with the two-roll mill, the rolling effect and efficiency of the three-roll mill are significantly improved.

[0003] The existing three-roll mills mainly use non-standard drive distribution boxes to disperse one input drive to the three rolls, respectively controlling the rotation of the three rolls. However, this has high requirements for the distribution box and requires precise control of the torque distributed to each roll to control the rolling force, resulting in a large size of the distribution box, difficult manufacturing and assembly, and high maintenance costs. Summary of the Invention

[0004] The purpose of the present invention is to provide a drive shaft device based on a three-roll mill to solve the problems raised in the above background technique.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A drive shaft device based on a three-roll mill includes a frame. At both ends of the frame, a side frame one and a side frame two are respectively provided. Between the side frame one and the side frame two, three groups of pressure rolls are installed. At the edge of the side frame one, a transmission mechanism is provided. On the side frame one, an adjustment mechanism is provided, and the adjustment mechanism is connected to the transmission mechanism. The transmission mechanism includes a housing one and a housing two. The housing one and the housing two are positioned and connected through positioning columns. The centers of the housing one and the housing two are fixedly connected to the frame. Between the housing one and the housing two, a first dividing shaft and two second dividing shafts are distributively installed. There are two second dividing shafts. The first dividing shaft and the two second dividing shafts are arranged in an equilateral triangle. At the edges of the housing one and the housing two, an input shaft is rotatably installed. Between the input shaft and the first dividing shaft, and between the first dividing shaft and the second dividing shafts, gear meshing transmission is carried out. At the ends of the first dividing shaft and the second dividing shafts, tooth-shaped insertion interfaces are provided, and tooth-shaped insertion rods are inserted into the tooth-shaped insertion interfaces. Between the tooth-shaped insertion rods and the pressure rolls, gear meshing transmission is carried out.

[0007] As a further solution of the present invention: support cylinders are provided on the first power take-off shaft and the second power take-off shaft. A driven bevel gear surface is provided on the support cylinder of the first power take-off shaft. A first bevel gear is provided on the input shaft. The first bevel gear meshes with the driven bevel gear surface. Second bevel gears and third bevel gears are provided on the first power take-off shaft and the two second power take-off shafts. The second bevel gears and the third bevel gears between the first power take-off shaft and the second power take-off shafts, and between the two first power take-off shafts mesh with each other. A first driving gear is provided at one end of the input shaft away from the first bevel gear. A power motor is fixedly installed on the frame. The power motor is connected with a second driving gear. The first driving gear meshes with the second driving gear.

[0008] As a further solution of the present invention: limit frames are provided on the first power take-off shaft and the two second power take-off shafts. The first power take-off shaft and the two second power take-off shafts are rotationally installed in a limited manner with respect to the second machine shell through the limit frames.

[0009] As a further solution of the present invention: a lifting frame is provided at the edge of the frame. A fixing frame is provided on the lifting frame. Clamping sliders are symmetrically provided at the top edges of the first machine shell and the second machine shell. Two sets of horizontal guide rails are provided on the fixing frame. The clamping sliders are slidably installed with respect to the horizontal guide rails. The centers of the first machine shell and the second machine shell are fixedly connected with the fixing frame.

[0010] As a further solution of the present invention: adjustment grooves are provided at the corresponding positions of the first side frame and the second side frame for the pressing rollers. Connecting shafts are provided at the ends of the pressing rollers. Matching sliders are slidably installed in the adjustment grooves. Clamping grooves are provided in the adjustment grooves. The matching sliders are installed in a limited manner with respect to the clamping grooves. The connecting shafts pass through the matching sliders and are rotationally installed with respect to the matching sliders. A first power take-off gear is provided on the toothed plugging rod. A second power take-off gear is provided at the end of the connecting shaft. The first power take-off gear meshes with the second power take-off gear. A limit frame is provided between the connecting shaft and the toothed plugging rod. A telescopic motor is fixedly installed at the end of the adjustment groove. The telescopic motor is connected with a sliding sleeve. The sliding sleeve is sleeved on the connecting shaft.

[0011] As a further solution of the present invention: an installation mechanism is provided between the connecting shaft and the pressing roller. The installation mechanism includes a fixing disk connected to the end of the connecting shaft. A right-angle frame is provided on the fixing disk. An adjustment motor is provided on the right-angle frame at the axis position of the connecting shaft. The adjustment motor is connected with a rotating disk. Telescopic columns are evenly inserted at the edge of the fixing disk. Swing frames are rotationally connected between the telescopic columns and the rotating disk. A connecting flange is provided at the end of the pressing roller. The telescopic columns are fixedly installed with respect to the connecting flange.

[0012] As a further solution of the present invention: a disassembly and assembly assisting mechanism is provided on the frame. The disassembly and assembly assisting mechanism includes a sliding frame provided on the frame. The second side frame is rotatably installed between the sliding frame. A rotating motor is provided at the rotation center of the second side frame. A connecting frame is provided at the bottom of the sliding frame. A vertical frame is provided between the frames. A lead screw is provided between the vertical frame and the connecting frame. The lead screw is connected to a translation motor. Vertical columns are provided at both ends of the vertical frame. A bracket is slidably installed on the vertical columns. A lifting cylinder is provided between the vertical frame and the bracket.

[0013] As a further solution of the present invention: rubber blocks are uniformly provided on the surface of the bracket.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0015] (1) The first transfer shaft and the two second transfer shafts are rotatably installed in a regular triangular shape between the first housing and the second housing. Power is transmitted to the first transfer shaft through the input shaft, driving the first transfer shaft to rotate between the first housing and the second housing. Combined with gear transmission, the first transfer shaft and the two second transfer shafts rotate synchronously, and then the power is transmitted to the pressure rollers. The relative speed of the contact surface can be adjusted by adjusting the diameter of the pressure rollers between the pressure rollers, thereby controlling the rolling speed and the rolling discharge direction. The first transfer shaft and the two second transfer shafts distributed in a regular triangle are all driven by gear meshing transmission, which improves the reliability and stability of power transmission, ensures the uniform dispersion of torque, and improves the overall stability of the transmission mechanism.

[0016] (2) The input shaft meshes with the driven bevel gear surface on the first transfer shaft through the first bevel gear, transmitting power to the first transfer shaft. The first transfer shaft transmits power to the two second transfer shafts through the second bevel gear and the third bevel gear, and the two second transfer shafts also mesh with each other through the second bevel gear and the third bevel gear to ensure the stable transmission of power.

[0017] (3) By providing a lifting frame and a fixing frame, when installing the transmission mechanism, first install the clamping sliders on the first housing and the second housing in cooperation with the horizontal guide rails, and fix the centers of the first housing and the second housing to the fixing frame. Adjust the distance between the transmission mechanism and the first side frame in combination with the horizontal guide rails, so as to facilitate the power connection with the end of the pressure roller.

[0018] (4) The connecting shaft is driven by the telescopic motor to move along the adjustment groove. When the connecting shaft moves along the adjustment groove, the toothed insertion rod flexibly moves at the ends of the first transfer shaft and the second transfer shaft, so as to perform adaptive adjustment. At the same time, the toothed insertion port and the toothed insertion rod are used to ensure the reliable transmission of power before and after adjustment. Description of the Drawings

[0019] Figure 1Schematic diagram of the overall structure of the present invention.

[0020] Figure 2 Schematic diagram of the installation structure of the transmission mechanism in the present invention.

[0021] Figure 3 Schematic diagram of the external structure of the transmission mechanism in the present invention.

[0022] Figure 4 Schematic diagram of the internal structure of the transmission mechanism in the present invention.

[0023] Figure 5 Schematic diagram of the installation of the input shaft in the present invention.

[0024] Figure 6 Schematic diagram of the structure of the distance adjustment mechanism in the present invention.

[0025] Figure 7 Schematic diagram of the structure of the installation mechanism in the present invention.

[0026] Figure 8 Schematic diagram of the structure of the disassembly and assembly auxiliary mechanism in the present invention.

[0027] In the figure: 1, frame; 10, side frame one; 11, side frame two; 12, lifting frame; 13, fixing frame; 14, horizontal guide rail; 2, pressure roller; 3, transmission mechanism; 30, housing one; 31, housing two; 310, positioning column; 32, input shaft; 320, bevel gear one; 321, driving gear one; 33, first intermediate shaft; 330, driven bevel gear surface; 331, bevel gear two; 332, bevel gear three; 34, second intermediate shaft; 341, limiting frame; 342, support cylinder; 343, toothed socket; 35, clamping slider; 36, driving gear two; 4, distance adjustment mechanism; 40, adjustment groove; 41, clamping groove; 42, telescopic motor; 43, mating slider; 44, sliding sleeve; 45, limiting frame; 46, toothed plugging rod; 47, first intermediate gear; 48, second intermediate gear; 49, connecting shaft; 5, installation mechanism; 50, fixed disk; 51, right-angle frame; 52, adjustment motor; 53, rotating disk; 54, telescopic column; 55, swinging frame; 56, connecting flange; 6, disassembly and assembly auxiliary mechanism; 60, sliding frame; 62, rotating motor; 63, connecting frame; 64, lead screw; 65, translation motor; 66, bracket; 67, vertical column; 68, lifting cylinder; 69, vertical frame. Detailed implementation manners

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. These terms are only used for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the present invention.

[0029] In addition, the terms "one" and "two" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "one" or "two" may explicitly or implicitly include one or more of such features. In the description of the present invention, "a plurality" means two or more, unless otherwise specifically defined.

[0030] In the present invention, unless otherwise clearly specified and defined, the terms "mounted", "connected", "coupled", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The technical solutions of the present invention will be further described in detail below in conjunction with specific embodiments.

[0032] Such as Figure 1 , Figure 2 , Figure 3 , Figure 4As shown in the figure, a transmission shaft device based on a three-roll mill includes a frame 1. At both ends of the frame 1, a side frame one 10 and a side frame two 11 are respectively arranged. Between the side frame one 10 and the side frame two 11, three groups of pressure rollers 2 are installed. At the edge of the side frame one 10, a transmission mechanism 3 is arranged. On the side frame one 10, an adjustable distance mechanism 4 is arranged, and the adjustable distance mechanism 4 is connected to the transmission mechanism 3. The transmission mechanism 3 includes a housing one 30 and a housing two 31. The housing one 30 and the housing two 31 are positioned and connected through a positioning column 310. The centers of the housing one 30 and the housing two 31 are fixedly connected to the frame 1. Between the housing one 30 and the housing two 31, a first intermediate shaft 33 and two second intermediate shafts 34 are distributed and installed. There are two second intermediate shafts 34. The first intermediate shaft 33 and the two second intermediate shafts 34 are arranged in an equilateral triangle. At the edges of the housing one 30 and the housing two 31, an input shaft 32 is rotatably installed. Between the input shaft 32 and the first intermediate shaft 33, and between the first intermediate shaft 33 and the second intermediate shafts 34, gear meshing transmission is adopted. At the ends of the first intermediate shaft 33 and the second intermediate shafts 34, a toothed socket 343 is arranged, and a toothed plug rod 46 is inserted into the toothed socket 343. Between the toothed plug rod 46 and the pressure roller 2, gear meshing transmission is adopted.

[0033] Specifically, the first intermediate shaft 33 and the two second intermediate shafts 34 are rotatably installed between the housing one 30 and the housing two 31 in an equilateral triangle. The power is transmitted to the first intermediate shaft 33 through the input shaft 32, driving the first intermediate shaft 33 to rotate between the housing one 30 and the housing two 31. Combined with gear transmission, the first intermediate shaft 33 and the two second intermediate shafts 34 rotate synchronously, and then the power is transmitted to the pressure roller 2. The relative speed of the contact surface can be adjusted by adjusting the diameter of the pressure roller 2 between the pressure rollers 2, thereby controlling the rolling speed and the rolling discharge direction. Between the first intermediate shaft 33 and the two second intermediate shafts 34 arranged in an equilateral triangle, gear meshing transmission is adopted, which improves the reliability and stability of power transmission, ensures the uniform dispersion of torque, and improves the overall stability of the transmission mechanism 3.

[0034] Further, as shown in Figure 4 、 Figure 5As shown in the figure, support cylinders 342 are provided on the first transfer shaft 33 and the second transfer shaft 34. A driven bevel gear surface 330 is provided on the support cylinder 342 of the first transfer shaft 33. A first bevel gear 320 is provided on the input shaft 32. The first bevel gear 320 meshes with the driven bevel gear surface 330. Second bevel gears 331 and third bevel gears 332 are provided on both the first transfer shaft 33 and the two second transfer shafts 34. The second bevel gears 331 and the third bevel gears 332 between the first transfer shaft 33 and the second transfer shafts 34, and between the two first transfer shafts 33 mesh with each other. A first drive gear 321 is provided at one end of the input shaft 32 away from the first bevel gear 320. A power motor is fixedly installed on the frame 1. The power motor is connected with a second drive gear 36. The first drive gear 321 meshes with the second drive gear 36.

[0035] Specifically, the input shaft 32 meshes with the driven bevel gear surface 330 on the first transfer shaft 33 through the first bevel gear 320 to transmit power to the first transfer shaft 33. The first transfer shaft 33 transmits power to the two second transfer shafts 34 through the second bevel gears 331 and the third bevel gears 332. And the two second transfer shafts 34 also mesh with each other through the second bevel gears 331 and the third bevel gears 332 to ensure stable power transmission.

[0036] It should be noted that the second bevel gears 331 and the third bevel gears 332 on the first transfer shaft 33 and the second transfer shafts 34 have the same model to ensure stable transmission between the first transfer shaft 33 and the second transfer shafts 34 and form a power transmission closed loop.

[0037] Furthermore, as Figure 4 shown, limit frames 341 are provided on the first transfer shaft 33 and the two second transfer shafts 34. The first transfer shaft 33 and the two second transfer shafts 34 are rotationally installed in a limited way with respect to the second housing 31 through the limit frames 341.

[0038] Furthermore, as Figure 2 、 Figure 3 shown, a lifting frame 12 is provided at the edge of the frame 1. A fixing frame 13 is provided on the lifting frame 12. Clamping sliders 35 are symmetrically provided at the top edges of the first housing 30 and the second housing 31. Two groups of horizontal guide rails 14 are provided on the fixing frame 13. The clamping sliders 35 are slidably installed with respect to the horizontal guide rails 14. The centers of the first housing 30 and the second housing 31 are fixedly connected with the fixing frame 13.

[0039] Specifically, to facilitate the installation of the transmission mechanism 3, by providing a lifting frame 12 and a fixing frame 13, when the transmission mechanism 3 needs to be installed, first, the clamping sliders 35 on the first housing 30 and the second housing 31 are fitted and installed with the horizontal guide rail 14. Combining the fixation of the centers of the first housing 30 and the second housing 31 with the fixing frame 13, and adjusting the distance between the transmission mechanism 3 and the first side frame 10 in combination with the horizontal guide rail 14, so as to facilitate the power connection with the end of the pressure roller 2.

[0040] Further, as Figure 6 shown, at the positions corresponding to the pressure roller 2 on the first side frame 10 and the second side frame 11, adjustment slots 40 are provided. At the end of the pressure roller 2, a connecting shaft 49 is provided. A mating slider 43 is slidably installed in the adjustment slot 40. A clamping groove 41 is provided in the adjustment slot 40. The mating slider 43 and the clamping groove 41 are installed with limited position. The connecting shaft 49 passes through the mating slider 43 and is rotatably installed with the mating slider 43. A first sub-gear 47 is provided on the toothed insertion rod 46. At the end of the connecting shaft 49, a second sub-gear 48 is provided. The first sub-gear 47 and the second sub-gear 48 are meshed with each other. A limiting frame 45 is provided between the connecting shaft 49 and the toothed insertion rod 46. At the end of the adjustment slot 40, a telescopic motor 42 is fixedly installed. The telescopic motor 42 is connected with a sliding sleeve 44. The sliding sleeve 44 is sleeved with the connecting shaft 49.

[0041] Specifically, to adapt to different rolling requirements, the distance between the pressure rollers 2 needs to be adjusted flexibly. The telescopic motor 42 drives the connecting shaft 49 to move along the adjustment slot 40. When the connecting shaft 49 moves along the adjustment slot 40, the toothed insertion rod 46 and the ends of the first sub-shaft 33 and the second sub-shaft 34 move flexibly, so as to make adaptive adjustments. At the same time, the toothed insertion port 343 and the toothed insertion rod 46 are used to ensure the reliable transmission of power before and after adjustment. By providing the limiting frame 45, it is ensured that the first sub-gear 47 and the second sub-gear 48 between the toothed insertion rod 46 and the connecting shaft 49 are reliably meshed.

[0042] Further, as Figure 7 shown, an installation mechanism 5 is provided between the connecting shaft 49 and the pressure roller 2. The installation mechanism 5 includes a fixing disk 50 connected to the end of the connecting shaft 49. On the fixing disk 50, a right-angle frame 51 is provided. At the axis position of the connecting shaft 49, an adjustment motor 52 is provided on the right-angle frame 51. The adjustment motor 52 is connected with a rotating disk 53. Telescopic columns 54 are evenly inserted at the edge of the fixing disk 50. A swing frame 55 is rotatably connected between the telescopic column 54 and the rotating disk 53. At the end of the pressure roller 2, a connecting flange 56 is provided. The telescopic column 54 and the connecting flange 56 are fixedly installed.

[0043] Specifically, when using pressure rollers 2 of different sizes as needed, the pressure roller 2 is connected to the edge of the fixed disk 50 through the connecting flange 56 at the end. By adjusting the motor 52, the rotating disk 53 is controlled to rotate, and the swing frame 55 drives the telescopic column 54 to extend or retract outward, so as to realize the quick installation or separation operation of the connecting flange 56, and realize the quick disassembly and assembly operation of the pressure roller 2.

[0044] Furthermore, as Figure 8 shown, a disassembly and assembly auxiliary mechanism 6 is provided on the frame 1. The disassembly and assembly auxiliary mechanism 6 includes a sliding frame 60 provided on the frame 1. The second side frame 11 is rotatably installed between the sliding frame 60. A rotating motor 62 is provided at the rotation center of the second side frame 11. A connecting frame 63 is provided at the bottom of the sliding frame 60. A vertical frame 69 is provided between the frames 1. A lead screw 64 is provided between the vertical frame 69 and the connecting frame 63. The lead screw 64 is connected to a translation motor 65. Vertical columns 67 are provided at both ends of the vertical frame 69. A bracket 66 is slidably installed on the vertical columns 67. A lifting cylinder 68 is provided between the vertical frame 69 and the bracket 66. Rubber blocks are evenly provided on the surface of the bracket 66.

[0045] Specifically, when disassembling and assembling the pressure roller 2, first, the lifting motor drives the bracket 66 to rise to lift the upper pressure roller 2. Subsequently, the installation mechanism 5 is combined to control the separation between the pressure roller 2 and the second side frame 11. The translation motor 65 drives the lead screw 64 to rotate, so that after the second side frame 11 moves away from the pressure roller 2, the rotating motor 62 is combined to drive the second side frame 11 to flip to a horizontal state, so as to carry out the disassembly, assembly and replacement operation of the pressure roller 2.

[0046] The working principle of the embodiment of the present invention is:

[0047] As Figures 1 - 8As shown in the figure, the first differential shaft 33 and the two second differential shafts 34 are rotationally installed in an equilateral triangle between the first housing 30 and the second housing 31. Power is transmitted to the first differential shaft 33 through the input shaft 32, driving the first differential shaft 33 to rotate between the first housing 30 and the second housing 31. Combined with gear transmission, the first differential shaft 33 and the two second differential shafts 34 rotate synchronously, and then the power is transmitted to the pressure rollers 2. The relative speed of the contact surface can be adjusted by adjusting the diameter of the pressure rollers 2, thereby controlling the rolling speed and the rolling discharge direction. The first differential shaft 33 and the two second differential shafts 34 distributed in an equilateral triangle are all driven by gear meshing, which improves the reliability and stability of power transmission, ensures the uniform dispersion of torque, and improves the overall stability of the transmission mechanism 3. The input shaft 32 meshes with the driven bevel gear surface 330 on the first differential shaft 33 through the first bevel gear 320, transmitting power to the first differential shaft 33. The first differential shaft 33 transmits power to the two second differential shafts 34 through the second bevel gear 331 and the third bevel gear 332, and the two second differential shafts 34 also mesh with each other through the second bevel gear 331 and the third bevel gear 332 to ensure stable power transmission. To facilitate the installation of the transmission mechanism 3, by setting the lifting frame 12 and the fixing frame 13, when installing the transmission mechanism 3, first install the clamping sliders 35 on the first housing 30 and the second housing 31 in cooperation with the horizontal guide rail 14, and fixedly install the centers of the first housing 30 and the second housing 31 with the fixing frame 13. Combine the horizontal guide rail 14 to adjust the distance between the transmission mechanism 3 and the first side frame 10, so as to facilitate the power connection with the end of the pressure roller 2. To adapt to different rolling requirements, it is necessary to flexibly adjust the distance between the pressure rollers 2. The telescopic motor 42 drives the connecting shaft 49 to move along the adjustment groove 40. When the connecting shaft 49 moves along the adjustment groove 40, the toothed plugging rod 46 flexibly moves at the ends of the first differential shaft 33 and the second differential shaft 34, so as to perform adaptive adjustment. At the same time, the toothed plugging interface 343 and the toothed plugging rod 46 are used to ensure reliable power transmission before and after adjustment. By setting the limit frame 45, it is ensured that the first differential gear 47 and the second differential gear 48 between the toothed plugging rod 46 and the connecting shaft 49 are reliably meshed. When using pressure rollers 2 of different sizes as needed, the pressure rollers 2 are connected to the edge of the fixed disk 50 through the connecting flange 56 at the end. The rotation disk 53 is controlled to rotate by the adjustment motor 52, and the swing frame 55 drives the telescopic column 54 to extend or retract outward, so as to realize the quick installation or separation operation of the connecting flange 56, and realize the quick disassembly and assembly operation of the pressure rollers 2. When disassembling and assembling the pressure rollers 2, first drive the bracket 66 to rise by the lifting motor to lift the upper pressure roller 2, and then separate the pressure roller 2 from the second side frame 11 by combining the installation mechanism 5. The translation motor 65 drives the lead screw 64 to rotate, so that the second side frame 11 moves away from the pressure roller 2, and then the rotation motor 62 drives the second side frame 11 to flip to the horizontal state, so as to perform the disassembly, assembly and replacement operation of the pressure roller 2.

[0048] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention. Any reference signs in the claims shall not be construed as limiting the claimed claim.

[0049] In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A drive shaft device based on a three-roll rolling mill, comprising a frame (1), with a side frame one (10) and a side frame two (11) respectively arranged at both ends of the frame (1), and three groups of pressure rollers (2) are installed between the side frame one (10) and the side frame two (11), characterized in that, A transmission mechanism (3) is provided at the edge of the first side frame (10), a distance adjustment mechanism (4) is provided on the first side frame (10), and the distance adjustment mechanism (4) is connected to the transmission mechanism (3); The transmission mechanism (3) includes a first housing (30) and a second housing (31). The first housing (30) and the second housing (31) are positioned and connected by positioning posts (310). The centers of the first housing (30) and the second housing (31) are fixedly connected to the frame (1). A first sub-shaft (33) and a second sub-shaft (34) are distributively installed between the first housing (30) and the second housing (31). There are two second sub-shafts (34). The first sub-shaft (33) and the two second sub-shafts (34) are arranged in an equilateral triangle. An input shaft (32) is rotatably installed at the edge of the first housing (30) and the second housing (31). The input shaft (32) and the first sub-shaft (33), and the first sub-shaft (33) and the second sub-shaft (34) are in gear meshing transmission. Tooth-shaped socket interfaces (343) are provided at the ends of the first sub-shaft (33) and the second sub-shaft (34). A tooth-shaped plug rod (46) is inserted into the tooth-shaped socket interface (343). The tooth-shaped plug rod (46) and the pressure roller (2) are in gear meshing transmission.

2. The drive shaft device based on a three-roll mill according to claim 1, characterized in that Support cylinders (342) are provided on the first sub-shaft (33) and the second sub-shaft (34). A driven bevel gear surface (330) is provided on the support cylinder (342) of the first sub-shaft (33). A first bevel gear (320) is provided on the input shaft (32). The first bevel gear (320) and the driven bevel gear surface (330) are meshed with each other. Second bevel gears (331) and third bevel gears (332) are provided on the first sub-shaft (33) and the two second sub-shafts (34). The second bevel gears (331) and the third bevel gears (332) between the first sub-shaft (33) and the second sub-shaft (34), and between the two second sub-shafts (34) are meshed with each other. A first driving gear (321) is provided at the end of the input shaft (32) away from the first bevel gear (320). A power motor is fixedly installed on the frame (1). The power motor is connected with a second driving gear (36). The first driving gear (321) and the second driving gear (36) are meshed with each other.

3. The drive shaft device based on a three-roll mill according to claim 2, characterized in that, Limit frames (341) are provided on the first sub-shaft (33) and the two second sub-shafts (34). The first sub-shaft (33) and the two second sub-shafts (34) are rotatably installed with limited movement between the second housing (31) through the limit frames (341).

4. The drive shaft device based on a three-roll mill according to claim 1, characterized in that, A lifting frame (12) is provided at the edge of the frame (1). A fixing frame (13) is provided on the lifting frame (12). Clamping sliders (35) are symmetrically provided at the top edges of the first housing (30) and the second housing (31). Two groups of horizontal guide rails (14) are provided on the fixing frame (13). The clamping sliders (35) and the horizontal guide rails (14) are slidably installed. The centers of the first housing (30) and the second housing (31) are fixedly connected to the fixing frame (13).

5. The drive shaft device based on a three-roll mill according to claim 1, characterized in that, Adjustment grooves (40) are provided at the positions corresponding to the pressing rollers (2) on the first side frame (10) and the second side frame (11). A connecting shaft (49) is provided at the end of the pressing roller (2). A mating slider (43) is slidably installed in the adjustment groove (40). A clamping groove (41) is provided in the adjustment groove (40). The mating slider (43) is installed with a limit between it and the clamping groove (41). The connecting shaft (49) passes through the mating slider (43) and is rotatably installed with the mating slider (43). A first differential gear (47) is provided on the toothed insertion rod (46). A second differential gear (48) is provided at the end of the connecting shaft (49). The first differential gear (47) and the second differential gear (48) are meshed with each other. A limit frame (45) is provided between the connecting shaft (49) and the toothed insertion rod (46). A telescopic motor (42) is fixedly installed at the end of the adjustment groove (40). The telescopic motor (42) is connected with a sliding sleeve (44). The sliding sleeve (44) is sleeved with the connecting shaft (49).

6. A drive shaft device based on a three-roll mill according to claim 5, characterized in that, An installation mechanism (5) is provided between the connecting shaft (49) and the pressing roller (2). The installation mechanism (5) includes a fixed disk (50) connected to the end of the connecting shaft (49). A right-angle frame (51) is provided on the fixed disk (50). An adjustment motor (52) is provided at the position of the axis of the connecting shaft (49) on the right-angle frame (51). The adjustment motor (52) is connected with a rotating disk (53). Telescopic columns (54) are evenly inserted at the edge of the fixed disk (50). A swing frame (55) is rotatably connected between the telescopic column (54) and the rotating disk (53). A connecting flange (56) is provided at the end of the pressing roller (2). The telescopic column (54) and the connecting flange (56) are fixedly installed with each other.

7. A drive shaft device based on a three-roll mill according to claim 1, characterized in that, A disassembly and assembly auxiliary mechanism (6) is provided on the machine frame (1). The disassembly and assembly auxiliary mechanism (6) includes a sliding frame (60) provided on the machine frame (1). The second side frame (11) is rotatably installed with the sliding frame (60). A rotating motor (62) is provided at the rotation center of the second side frame (11). A connecting frame (63) is provided at the bottom of the sliding frame (60). A vertical frame (69) is provided between the machine frames (1). A lead screw (64) is provided between the vertical frame (69) and the connecting frame (63). The lead screw (64) is connected with a translation motor (65). Vertical columns (67) are provided at both ends of the vertical frame (69). A bracket (66) is slidably installed on the vertical column (67). A lifting cylinder (68) is provided between the vertical frame (69) and the bracket (66).

8. A drive shaft device based on a three-roll mill according to claim 7, characterized in that, Rubber blocks are evenly provided on the surface of the bracket (66).

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