Transmission shaft device based on three-roller mill

Abstract

The invention discloses a transmission shaft device based on a three-roller mill, and relates to the technical field of steel rolling, the transmission shaft device comprises a rack, a first side frame and a second side frame, three groups of compression rollers are mounted between the first side frame and the second side frame, a transmission mechanism is arranged on the edge of the first side frame, a distance adjusting mechanism is arranged on the first side frame, and the distance adjusting mechanism is connected with the transmission mechanism; the transmission mechanism comprises a first machine shell and a second machine shell, a first transfer shaft and second transfer shafts are distributed and installed between the first machine shell and the second machine shell, the number of the second transfer shafts is two, the first transfer shaft and the two second transfer shafts are arranged in a regular triangle shape, tooth-shaped insertion openings are formed in the ends of the first transfer shaft and the ends of the second transfer shafts, and tooth-shaped insertion rods are inserted into the tooth-shaped insertion openings. The distance adjusting mechanism is combined to realize reliable transmission of power before and after the distance between the pressing rollers is adjusted, and the distance between each pressing roller and the adjacent pressing roller can be independently adjusted, so that wider rolling requirements are met.

Description

Technical Field

[0001] The invention relates to the technical field of steel rolling, in particular to a transmission shaft device based on a three-roller rolling mill. Background Art

[0002] The frame of the three-roll mill is independently driven by three transmission input shafts, which are arranged in a regular triangle around the transmission rollers. During rolling, the steel passes through the gaps between the three rollers. Compared with the double-roll mill, the rolling effect and efficiency of the three-roll mill are significantly improved.

[0003] The existing three-roll rolling mill mainly uses a non-standard transmission distribution box to distribute an input transmission to three rolls, and control the rotation of the three rolls separately. However, this places high demands on the distribution box, which requires precise control of the torque distributed to each roll to control the rolling force. As a result, the distribution box is large in size, difficult to manufacture and assemble, and has high maintenance costs. Summary of the invention

[0004] The object of the present invention is to provide a transmission shaft device based on a three-roller rolling mill to solve the problems raised in the above background technology.

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

[0006] A transmission shaft device based on a three-roll rolling mill comprises a frame, wherein a side frame 1 and a side frame 2 are respectively arranged at both ends of the frame, three groups of pressure rollers are installed between the side frame 1 and the side frame 2, a transmission mechanism is arranged at the edge of the side frame 1, a distance adjustment mechanism is arranged on the side frame 1, and the distance adjustment mechanism is connected to the transmission mechanism. The transmission mechanism includes a casing one and a casing two, the casing one and the casing two are positioned and connected by a positioning column, the centers of the casing one and the casing two are fixedly connected to the frame, a transfer shaft one and a transfer shaft two are distributed and installed between the casing one and the casing two, two transfer shafts are provided, and the transfer shaft one and the two transfer shafts two are arranged in an equilateral triangle, an input shaft is rotatably installed at the edge of the casing one and the casing two, the input shaft and the transfer shaft one, and the transfer shaft one and the transfer shaft two are driven by gear meshing, and the ends of the transfer shaft one and the transfer shaft two are provided with toothed plug-in interfaces, a toothed plug-in rod is plugged into the toothed plug-in interface, and the toothed plug-in rod and the pressure roller are driven by gear meshing.

[0007] As a further scheme of the present invention: support cylinders are provided on the transfer shaft one and the transfer shaft two, and a driven bevel tooth surface is provided on the support cylinder of the transfer shaft one, and a bevel gear one is provided on the input shaft, and the bevel gear one and the driven bevel tooth surface are meshed with each other, and bevel gear two and bevel gear three are provided on the transfer shaft one and the two transfer shafts two, and the bevel gear two and bevel gear three between the transfer shaft one and the transfer shaft two and between the two transfer shafts one are meshed with each other, and a driving gear one is provided on the end of the input shaft away from the bevel gear one, and a power motor is fixedly installed on the frame, and the power motor is connected to a driving gear two, and the driving gear one and the driving gear two are meshed with each other.

[0008] As a further solution of the present invention: a limiting frame is provided on the transfer shaft 1 and the two transfer shafts 2, and the transfer shaft 1 and the two transfer shafts 2 are rotationally mounted in a limited manner between the limiting frame and the casing 2.

[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 on the top edges of the casing one and the casing two, two groups of horizontal guide rails are provided on the fixing frame, the clamping sliders are slidably installed between the horizontal guide rails, and the centers of the casing one and the casing two are fixedly connected to the fixing frame.

[0010] As a further solution of the present invention: the side frame 1 and the side frame 2 are provided with adjustment grooves at the positions corresponding to the pressure rollers, and the ends of the pressure rollers are provided with connecting shafts, and a matching slider is slidably installed in the adjustment grooves, and a clamping groove is provided in the adjustment grooves, and the matching slider and the clamping groove are limitedly installed, and the connecting shaft passes through the matching slider and is rotatably installed between the matching slider, and the toothed plug-in rod is provided with a transfer gear 1, and a transfer gear 2 is provided at the end of the connecting shaft, and the transfer gear 1 and the transfer gear 2 are meshed with each other, and a limiting frame is provided between the connecting shaft and the toothed plug-in rod, and a telescopic motor is fixedly installed at the end of the adjustment groove, and the telescopic motor is connected with a sliding sleeve, and the sliding sleeve is sleeved with the connecting shaft.

[0011] As a further solution of the present invention: an installation mechanism is arranged between the connecting shaft and the pressure roller, the installation mechanism includes a fixed disk connected to the end of the connecting shaft, a right-angle frame is arranged on the fixed disk, an adjustment motor is arranged on the right-angle frame at the axial position of the connecting shaft, the adjustment motor is connected to a rotating disk, telescopic columns are evenly inserted into the edge of the fixed disk, a swing frame is rotatably connected between the telescopic columns and the rotating disk, a connecting flange is arranged at the end of the pressure roller, and the telescopic column and the connecting flange are fixedly installed.

[0012] As a further solution of the present invention: a disassembly and assembly auxiliary mechanism is provided on the frame, and the disassembly and assembly auxiliary mechanism includes a sliding frame arranged on the frame, and the side frame 2 is rotatably installed between the sliding frame, and a rotating motor is provided at the rotation center of the side frame 2, and a connecting frame is provided at the bottom of the sliding frame, and a vertical frame is provided between the frames, and a screw rod is provided between the vertical frame and the connecting frame, and the screw rod is connected to a translation motor, and vertical columns are provided at both ends of the vertical frame, and a bracket is slidably installed on the vertical column, and a lifting cylinder is provided between the vertical frame and the bracket.

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

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] (1) The transfer shaft 1 and the two transfer shafts 2 are installed between the casing 1 and the casing 2 in a right triangle shape. The power is transmitted to the transfer shaft 1 through the input shaft, driving the transfer shaft 1 to rotate between the casing 1 and the casing 2. Combined with the gear transmission, the transfer shaft 1 and the two transfer shafts 2 rotate synchronously, and then the power is transmitted to the pressure roller. The relative speed of the contact surface between the pressure rollers can be adjusted by adjusting the diameter of the pressure rollers, thereby controlling the rolling speed and the rolling discharge direction. The transfer shaft 1 and the two transfer shafts 2, which are distributed in a right triangle shape, are all driven by gear meshing, which improves the reliability and stability of power transmission, ensures the uniform distribution of torque, and improves the overall stability of the transmission mechanism.

[0016] (2) The input shaft meshes with the driven bevel tooth surface on the transfer shaft 1 through bevel gear 1 to transmit power to the transfer shaft 1. The transfer shaft 1 transmits power to the two transfer shafts 2 through bevel gear 2 and bevel gear 3. The two transfer shafts 2 also mesh with each other through bevel gear 2 and bevel gear 3 to ensure stable power transmission.

[0017] (3) By setting up a lifting frame and a fixed frame, when the transmission mechanism needs to be installed, first, the clamping sliders on the casing one and the casing two are installed in coordination with the horizontal guide rail, and then the casing one and the casing two are fixedly installed between the center and the fixed frame, and the distance between the transmission mechanism and the side frame one is adjusted in combination with the horizontal guide rail, 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 plug-in rod and the ends of the transfer shaft one and the transfer shaft two move flexibly, thereby performing adaptive adjustment. At the same time, the toothed plug-in interface and the toothed plug-in rod are used to ensure reliable transmission of power before and after adjustment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1It is a schematic diagram of the overall structure of the present invention.

[0020] Figure 2 It is a schematic diagram of the installation structure of the transmission mechanism in the present invention.

[0021] Figure 3 It is a schematic diagram of the external structure of the transmission mechanism in the present invention.

[0022] Figure 4 It is a schematic diagram of the internal structure of the transmission mechanism in the present invention.

[0023] Figure 5 It is a schematic diagram of the installation of the input shaft in the present invention.

[0024] Figure 6 It is a structural schematic diagram of the distance adjustment mechanism in the present invention.

[0025] Figure 7 It is a structural schematic diagram of the installation mechanism in the present invention.

[0026] Figure 8 It is a structural schematic diagram of the disassembly and assembly auxiliary mechanism in the present invention.

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

[0028] In the description of the present invention, it is necessary to understand that the orientations or positional relationships indicated by terms such as “longitudinal”, “lateral”, “upper”, “lower”, “top”, “bottom”, “inside” and “outside” are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0029] In addition, the terms "one" and "two" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "one" or "two" may explicitly or implicitly include one or more of the feature. In the description of the present invention, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0030] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The technical solution of the present invention is further described in detail below in conjunction with specific implementation methods.

[0032] like Figure 1 , Figure 2 , Figure 3 , Figure 4As shown, a transmission shaft device based on a three-roll rolling mill includes a frame 1, and side frames 10 and 11 are respectively provided at both ends of the frame 1, three groups of pressure rollers 2 are installed between the side frames 10 and 11, a transmission mechanism 3 is provided at the edge of the side frame 10, and a distance adjustment mechanism 4 is provided on the side frame 10, and the distance adjustment mechanism 4 is connected to the transmission mechanism 3. The transmission mechanism 3 includes a casing 1 30 and a casing 2 31, which are positioned and connected with each other by a positioning column 310, and the centers of the casing 1 30 and the casing 2 31 are fixedly connected with the frame 1, and a transfer shaft 1 33 and a transfer shaft 2 34 are distributed and installed between the casing 1 30 and the casing 2 31, and two transfer shafts 2 34 are provided, and the transfer shaft 1 33 and the two transfer shafts 2 34 are arranged in an equilateral triangle, and an input shaft 32 is rotatably installed at the edge of the casing 1 30 and the casing 2 31, and the input shaft 32 and the transfer shaft 1 33, and the transfer shaft 1 33 and the transfer shaft 2 34 are transmitted by gear meshing, and the ends of the transfer shaft 1 33 and the transfer shaft 2 34 are provided with a toothed plug-in interface 343, and a toothed plug-in rod 46 is inserted in the toothed plug-in interface 343, and the toothed plug-in rod 46 and the pressure roller 2 are transmitted by gear meshing.

[0033] Specifically, the transfer shaft 1 33 and the two transfer shafts 2 34 are rotatably installed between the housing 1 30 and the housing 2 31 in the form of an equilateral triangle. The power is transmitted to the transfer shaft 1 33 through the input shaft 32, driving the transfer shaft 1 33 to rotate between the housing 1 30 and the housing 2 31. Combined with the gear transmission, the transfer shaft 1 33 and the two transfer shafts 2 34 rotate synchronously, and then the power is transmitted to the pressure roller 2. The relative speed of the contact surface between the pressure rollers 2 can be adjusted by adjusting the diameter of the pressure roller 2, thereby controlling the rolling speed and the rolling discharge direction. The transfer shaft 1 33 and the two transfer shafts 2 34 distributed in the form of an equilateral triangle are all driven by gear meshing, which improves the reliability and stability of power transmission, ensures the uniform distribution of torque, and improves the overall stability of the transmission mechanism 3.

[0034] Further, such as Figure 4 , Figure 5As shown, the transfer shaft 1 33 and the transfer shaft 2 34 are provided with a support cylinder 342, and a driven bevel tooth surface 330 is provided on the support cylinder 342 of the transfer shaft 1 33, and a bevel gear 1 320 is provided on the input shaft 32, and the bevel gear 1 320 and the driven bevel tooth surface 330 are meshed with each other, and the transfer shaft 1 33 and the two transfer shafts 2 34 are provided with a bevel gear 2 331 and a bevel gear 3 332, and the bevel gear 2 331 and the bevel gear 3 332 between the transfer shaft 1 33 and the transfer shaft 2 34 and between the two transfer shafts 1 33 are meshed with each other, and a driving gear 1 321 is provided at one end of the input shaft 32 away from the bevel gear 1 320, and a power motor is fixedly installed on the frame 1, and the power motor is connected to a driving gear 2 36, and the driving gear 1 321 and the driving gear 2 36 are meshed with each other.

[0035] Specifically, the input shaft 32 meshes with the driven bevel tooth surface 330 on the transfer shaft 1 33 through the bevel gear 1 320 to transmit power to the transfer shaft 1 33. The transfer shaft 1 33 transmits power to the two transfer shafts 2 34 through the bevel gear 2 331 and the bevel gear 3 332. The two transfer shafts 2 34 also mesh with each other through the bevel gear 2 331 and the bevel gear 3 332 to ensure stable power transmission.

[0036] It should be noted that the bevel gear 2 331 and the bevel gear 3 332 on the transfer shaft 1 33 and the transfer shaft 2 34 are of the same model, ensuring that a stable transmission and a closed power transmission loop can be formed between the transfer shaft 1 33 and the transfer shaft 2 34 .

[0037] Further, such as Figure 4 As shown, a limit frame 341 is provided on the transfer shaft 1 33 and the two transfer shafts 2 34 , and the transfer shaft 1 33 and the two transfer shafts 2 34 are rotationally mounted in a limited position between the limit frame 341 and the casing 2 31 .

[0038] Further, such as Figure 2 , Figure 3 As 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, a snap-in slider 35 is symmetrically provided at the top edge of the housing 1 30 and the housing 2 31, two groups of horizontal guide rails 14 are provided on the fixing frame 13, the snap-in slider 35 is slidably installed between the horizontal guide rails 14, and the center of the housing 1 30 and the housing 2 31 is fixedly connected to the fixing frame 13.

[0039] Specifically, in order to facilitate the installation of the transmission mechanism 3, a lifting frame 12 and a fixing frame 13 are provided. When the transmission mechanism 3 needs to be installed, first, the clamping sliders 35 on the casing 1 30 and the casing 2 31 are matched and installed with the horizontal guide rail 14, and then the casing 1 30 and the casing 2 31 are fixedly installed between the center and the fixing frame 13, and the distance between the transmission mechanism 3 and the side frame 10 is adjusted 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, such as Figure 6 As shown, the side frame 10 and the side frame 2 11 are provided with adjustment grooves 40 at the positions corresponding to the pressure roller 2, and the end of the pressure roller 2 is provided with a connecting shaft 49, a matching slider 43 is slidably installed in the adjustment groove 40, a clamping groove 41 is provided in the adjustment groove 40, the matching slider 43 and the clamping groove 41 are limitedly installed, the connecting shaft 49 passes through the matching slider 43 and is rotatably installed between the matching slider 43, a transfer gear 1 47 is provided on the toothed plug-in rod 46, a transfer gear 2 48 is provided at the end of the connecting shaft 49, the transfer gear 1 47 and the transfer gear 2 48 are meshed with each other, a limiting frame 45 is provided between the connecting shaft 49 and the toothed plug-in rod 46, and a telescopic motor 42 is fixedly installed at the end of the adjustment groove 40, and the telescopic motor 42 is connected with a sliding sleeve 44, and the sliding sleeve 44 is sleeved with the connecting shaft 49.

[0041] Specifically, in order to meet different rolling requirements, the spacing between the pressure rollers 2 needs to be flexibly adjusted. The connecting shaft 49 is driven by the telescopic motor 42 to move along the adjustment slot 40. When the connecting shaft 49 moves along the adjustment slot 40, the toothed plug-in rod 46 and the ends of the transfer shaft 1 33 and the first transfer shaft 2 34 move flexibly, thereby making adaptive adjustments. At the same time, the toothed plug-in interface 343 and the toothed plug-in rod 46 are used to ensure reliable transmission of power before and after adjustment. The limit frame 45 is provided to ensure reliable meshing of the transfer gear 1 47 and the transfer gear 2 48 between the toothed plug-in rod 46 and the connecting shaft 49.

[0042] Further, such as Figure 7 As shown, a mounting mechanism 5 is provided between the connecting shaft 49 and the pressure roller 2, and the mounting 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, and an adjustment motor 52 is provided on the right-angle frame 51 at the axial position of the connecting shaft 49, and the adjustment motor 52 is connected to a rotating disk 53, and telescopic columns 54 are evenly inserted at the edge of the fixed disk 50, and a swing frame 55 is rotatably connected between the telescopic columns 54 and the rotating disk 53, and a connecting flange 56 is provided at the end of the pressure roller 2, and 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, and the rotating disk 53 is controlled to rotate by adjusting the motor 52. The telescopic column 54 is driven to extend or retract outward in combination with the swing frame 55, thereby realizing the rapid installation or separation operation of the connecting flange 56 and the rapid disassembly and assembly of the pressure roller 2.

[0044] Further, such as Figure 8 As shown, the frame 1 is provided with a disassembly and assembly auxiliary mechanism 6, which includes a sliding frame 60 provided on the frame 1, the side frame 11 is rotatably mounted between the sliding frame 60, a rotating motor 62 is provided at the rotation center of the 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 screw rod 64 is provided between the vertical frame 69 and the connecting frame 63, a translation motor 65 is connected to the screw rod 64, vertical columns 67 are provided at both ends of the vertical frame 69, a bracket 66 is slidably mounted on the vertical column 67, and a lifting cylinder 68 is provided between the vertical frame 69 and the bracket 66. The surface of the bracket 66 is evenly provided with rubber blocks.

[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, and then the installation mechanism 5 is combined to control the separation between the pressure roller 2 and the side frame 11. The translation motor 65 drives the screw rod 64 to rotate, so that the side frame 11 is away from the pressure roller 2, and then the rotating motor 62 drives the side frame 11 to flip to a horizontal state, so as to carry out the disassembly, assembly and replacement of the pressure roller 2.

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

[0047] like Figure 1-Figure 8As shown, the transfer shaft 1 33 and the two transfer shafts 2 34 are rotatably installed between the housing 1 30 and the housing 2 31 in the form of an equilateral triangle. The power is transmitted to the transfer shaft 1 33 through the input shaft 32, driving the transfer shaft 1 33 to rotate between the housing 1 30 and the housing 2 31. Combined with the gear transmission, the transfer shaft 1 33 and the two transfer shafts 2 34 rotate synchronously, and then the power is transmitted to the pressure roller 2. The relative speed of the contact surface between the pressure rollers 2 can be adjusted by adjusting the diameter of the pressure roller 2, thereby controlling the rolling speed and the rolling discharge direction. The transfer shaft 1 33 and the two transfer shafts 2 34 distributed in the form of an equilateral triangle are all driven by gear meshing, which improves the reliability and stability of power transmission, ensures the uniform distribution of torque, and improves the overall stability of the transmission mechanism 3. The input shaft 32 meshes with the driven bevel tooth surface 330 on the transfer shaft 1 33 through the bevel gear 1 320, and transmits the power to the transfer shaft 1 33. The transfer shaft 1 33 transmits the power to the two transfer shafts 2 34 through the bevel gear 2 331 and the bevel gear 3 332, and the two transfer shafts 2 34 also mesh with each other through the bevel gear 2 331 and the bevel gear 3 332, so as to ensure the stable transmission of power. In order to facilitate the installation of the transmission mechanism 3, by setting the lifting frame 12 and the fixing frame 13, when the transmission mechanism 3 needs to be installed, firstly, the clamping slider 35 on the housing 1 30 and the housing 2 31 is matched and installed with the horizontal guide rail 14, and the center of the housing 1 30 and the housing 2 31 is fixedly installed with the fixing frame 13, and the distance between the transmission mechanism 3 and the side frame 1 10 is adjusted in combination with the horizontal guide rail 14, so as to facilitate the power connection with the end of the pressure roller 2. In order to meet different rolling requirements, it is necessary to flexibly adjust the spacing between the pressure rollers 2. The connecting shaft 49 is driven to move along the adjustment slot 40 by the telescopic motor 42. When the connecting shaft 49 moves along the adjustment slot 40, the toothed plug-in rod 46 and the ends of the transfer shaft 1 33 and the first transfer shaft 2 34 move flexibly, thereby making adaptive adjustments. At the same time, the toothed plug-in interface 343 and the toothed plug-in rod 46 ensure reliable transmission of power before and after the adjustment. The limit frame 45 is provided to ensure reliable meshing of the transfer gear 1 47 and the transfer gear 2 48 between the toothed plug-in rod 46 and the connecting shaft 49. When using a pressure roller 2 of different sizes as required, the pressure roller 2 is connected to the edge of the fixed disk 50 through the connecting flange 56 at the end, and the rotating disk 53 is controlled to rotate by the adjusting motor 52, and the telescopic column 54 is driven to extend or retract outward in combination with the swing frame 55, thereby realizing the rapid installation or separation operation of the connecting flange 56, and realizing the rapid disassembly and assembly of the pressure roller 2. When disassembling and assembling the pressure roller 2, firstly, the lifting motor drives the bracket 66 to rise to lift the upper pressure roller 2, and then the installation mechanism 5 is combined to control the separation between the pressure roller 2 and the side frame 11. The translation motor 65 drives the screw rod 64 to rotate, so that the side frame 11 is away from the pressure roller 2, and then the rotating motor 62 drives the side frame 11 to flip to a horizontal state, so as to carry out the disassembly, assembly and replacement of the pressure roller 2.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. Any reference numeral in a claim shall not be regarded as limiting the claim involved.

[0049] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A transmission shaft device based on a three-roll rolling mill, comprising a frame (1), wherein two ends of the frame (1) are respectively provided with a side frame 1 (10) and a side frame 2 (11), and three groups of pressure rollers (2) are installed between the side frame 1 (10) and the side frame 2 (11), characterized in that: The edge of the side frame 1 (10) is provided with a transmission mechanism (3), and the side frame 1 (10) is provided with a distance adjustment mechanism (4), and the distance adjustment mechanism (4) is connected to the transmission mechanism (3); The transmission mechanism (3) comprises a casing 1 (30) and a casing 2 (31), wherein the casing 1 (30) and the casing 2 (31) are positioned and connected via a positioning column (310), wherein the centers of the casing 1 (30) and the casing 2 (31) are fixedly connected to the frame (1), wherein a transfer shaft 1 (33) and a transfer shaft 2 (34) are distributed and installed between the casing 1 (30) and the casing 2 (31), wherein two transfer shafts 2 (34) are provided, and the transfer shaft 1 (33) and the two transfer shafts 2 (34) are in a positive relationship with each other. The arrangement is triangular, and the edges of the housing 1 (30) and the housing 2 (31) are rotatably mounted with an input shaft (32), and the input shaft (32) and the transfer shaft 1 (33), and the transfer shaft 1 (33) and the transfer shaft 2 (34) are driven by gear meshing. The ends of the transfer shaft 1 (33) and the transfer shaft 2 (34) are provided with toothed plug-in interfaces (343), and a toothed plug-in rod (46) is inserted into the toothed plug-in interface (343), and the toothed plug-in rod (46) and the pressure roller (2) are driven by gear meshing.

2. A transmission shaft device based on a three-roll mill according to claim 1, characterized in that: The transfer shaft 1 (33) and the transfer shaft 2 (34) are provided with a support cylinder (342), the support cylinder (342) of the transfer shaft 1 (33) is provided with a driven bevel tooth surface (330), the input shaft (32) is provided with a bevel gear 1 (320), the bevel gear 1 (320) and the driven bevel tooth surface (330) are meshed with each other, the transfer shaft 1 (33) and the two transfer shafts 2 (34) are both provided with a bevel gear 2 (331) and a bevel gear 3 (332). The bevel gear 2 (331) and the bevel gear 3 (332) between the transfer shaft 1 (33) and the transfer shaft 2 (34), and between the two transfer shafts 1 (33) are meshed with each other. A drive gear 1 (321) is provided at one end of the input shaft (32) away from the bevel gear 1 (320). A power motor is fixedly mounted on the frame (1). The power motor is connected to the drive gear 2 (36). The drive gear 1 (321) and the drive gear 2 (36) are meshed with each other.

3. A transmission shaft device based on a three-roll mill according to claim 2, characterized in that: A limiting frame (341) is provided on the transfer shaft 1 (33) and the two transfer shafts 2 (34). The transfer shaft 1 (33) and the two transfer shafts 2 (34) are rotationally mounted in a limited manner between the limiting frame (341) and the casing 2 (31).

4. The transmission shaft device based on a three-roll mill according to claim 1, characterized in that: The edge of the frame (1) is provided with a lifting frame (12), and a fixing frame (13) is provided on the lifting frame (12). The top edges of the housing 1 (30) and the housing 2 (31) are symmetrically provided with snap-fitting slide blocks (35), and the fixing frame (13) is provided with two groups of horizontal guide rails (14). The snap-fitting slide blocks (35) are slidably installed on the horizontal guide rails (14), and the centers of the housing 1 (30) and the housing 2 (31) are fixedly connected to the fixing frame (13).

5. The transmission shaft device based on a three-roll mill according to claim 1, characterized in that: The side frame 1 (10) and the side frame 2 (11) are provided with adjustment grooves (40) at positions corresponding to the pressure roller (2); a connecting shaft (49) is provided at the end of the pressure roller (2); a matching slider (43) is slidably installed in the adjustment groove (40); a clamping groove (41) is provided in the adjustment groove (40); the matching slider (43) and the clamping groove (41) are limitedly installed between them; the connecting shaft (49) passes through the matching slider (43) and is rotatably installed between the matching slider (43); the toothed A transfer gear 1 (47) is arranged on the plug-in rod (46), a transfer gear 2 (48) is arranged at the end of the connecting shaft (49), the transfer gear 1 (47) and the transfer gear 2 (48) are meshed with each other, a limit frame (45) is arranged between the connecting shaft (49) and the toothed plug-in rod (46), a telescopic motor (42) is fixedly mounted at the end of the adjustment slot (40), the telescopic motor (42) is connected to a sliding sleeve (44), and the sliding sleeve (44) is sleeved with the connecting shaft (49).

6. A transmission shaft device based on a three-roll mill according to claim 5, characterized in that: A mounting mechanism (5) is provided between the connecting shaft (49) and the pressure roller (2), the mounting mechanism (5) comprising a fixed disk (50) connected to the end of the connecting shaft (49), a right angle frame (51) being provided on the fixed disk (50), an adjustment motor (52) being provided on the right angle frame (51) at the axial position of the connecting shaft (49), the adjustment motor (52) being connected to a rotating disk (53), telescopic columns (54) being evenly inserted at the edge of the fixed disk (50), a swing frame (55) being rotatably connected between the telescopic columns (54) and the rotating disk (53), a connecting flange (56) being provided at the end of the pressure roller (2), the telescopic column (54) being fixedly installed with the connecting flange (56).

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

8. The transmission shaft device based on a three-roll mill according to claim 7, characterized in that: The surface of the bracket (66) is evenly provided with rubber blocks.

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