Connecting shaft replacing device of lower transmission vertical rolling mill

Abstract

The invention provides a connecting shaft replacing device of a lower transmission vertical rolling mill, and relates to the technical field of rolling mill accessories, the connecting shaft replacing device of the lower transmission vertical rolling mill comprises a connecting shaft replacing device used for replacing a connecting shaft on a rolling mill rack, and the connecting shaft is used for transmitting power of a power assembly to a roller shaft; the lower transmission vertical rolling mill connecting shaft replacing device comprises a fixed bearing part, a movable bearing part and a replacing trolley, the fixed bearing part is arranged at the bottom of the rolling mill rack and is close to the power assembly, the movable bearing part is detachably connected with the fixed bearing part at the end, away from the power assembly, of the fixed bearing part, and the replacing trolley is arranged on the movable bearing part. The movable bearing part and the fixed bearing part are connected to form a complete bearing part, the bearing part is used for bearing the replacement trolley, and the replacement trolley can move on the movable bearing part and the fixed bearing part in a reciprocating mode. The labor intensity is greatly reduced, the replacement efficiency of the connecting shaft is improved, and operation is convenient.

Description

Technical Field

[0001] The invention relates to the technical field of rolling mill accessories, and in particular to a lower transmission vertical roller mill connecting shaft replacement device. Background Art

[0002] The coupling shaft of the rolling mill is an important component of the rolling mill, which is used to transmit power between the power unit and the roller shaft.

[0003] The connecting shaft of the lower drive vertical roller mill is generally located in an underground tunnel below the vertical roller mill frame, and there are obstacles on both sides and above of the connecting shaft.

[0004] In the related art, when the connecting shaft of the lower transmission vertical roller mill is replaced, it is generally replaced manually by relying on the cooperation of a crane and a wire rope. The manual labor intensity is high, the operation is difficult, and there is a certain degree of danger. Summary of the invention

[0005] The problem to be solved by the present invention is that when manually replacing the matching butt joint shafts of the overhead crane and the steel wire rope, the labor intensity is high, the operation is difficult, and there is a certain risk.

[0006] In order to solve the above problems, the present invention provides a lower transmission vertical roll mill shaft replacement device for replacing the shaft on the rolling mill frame, the shaft is used to transmit the power of the power assembly to the roll shaft, the lower transmission vertical roll mill shaft replacement device comprises a fixed bearing, a movable bearing and a replacement vehicle, the fixed bearing is arranged at the bottom of the rolling mill frame and is close to the power assembly, at the end of the fixed bearing away from the power assembly, the movable bearing is detachably engaged with the fixed bearing, and the two are engaged to form a complete bearing, the bearing is used to carry the replacement vehicle, the replacement vehicle can reciprocate on the movable bearing and the fixed bearing, and is used to fix and transport the shaft, the rolling mill frame is provided with a frame window which is arranged through the frame up and down, the frame window is opposite to the movable bearing up and down, and the replacement vehicle to which the shaft is fixed is used to pass through the frame window under the action of external force.

[0007] Optionally, the replacement vehicle includes a pressure ring, a lifting ring and a vehicle body, the vehicle body is slidably matched with the support member and can be detached from the support member, the lifting ring is fixed to the vehicle body, and the pressure ring is detachably connected to the vehicle body. When the pressure ring is connected to the vehicle body, a receiving space for accommodating the connecting shaft is formed between the two.

[0008] Optionally, the fixed support member includes a first frame and a first guide rail, wherein the first guide rail is fixed to the top of the first frame, the first guide rail is used to slide and support the vehicle body, and the first guide rail extends from the bottom of the rolling mill frame to the position of the power assembly.

[0009] Optionally, the movable carrier includes a second frame and a second guide rail, the second guide rail is fixed to the top of the second frame, the second guide rail is used to slide and support the vehicle body, and when the fixed carrier is engaged with the movable carrier, the first guide rail and the second guide rail are engaged to form the guide rail of the carrier.

[0010] Optionally, the replacement vehicle further comprises a third limiting guide wheel and a third supporting guide wheel, wherein the third limiting guide wheel and the third supporting guide wheel are respectively installed on both sides of the vehicle body, and the third limiting guide wheel and the third supporting guide wheel can roll linearly along the guide rail of the carrier.

[0011] Optionally, the third limiting guide wheels and the third supporting guide wheels are respectively provided in multiple groups and are evenly distributed on the vehicle body.

[0012] Optionally, the first guide rail includes a first limiting guide rail and a first supporting guide rail. Along the length direction of the connecting axis, the first limiting guide rail and the first supporting guide rail are arranged in parallel on both sides of the top of the first frame. The first limiting guide rail cooperates with the third limiting guide wheel, and the first supporting guide rail cooperates with the third supporting guide wheel.

[0013] Optionally, the second guide rail includes a second limiting guide rail and a second supporting guide rail, the second limiting guide rail and the second supporting guide rail are arranged in parallel on both sides of the top of the second frame, the second limiting guide rail cooperates with the third limiting guide wheel, and the second supporting guide rail cooperates with the third supporting guide wheel, and when the first guide rail and the second guide rail are engaged, the first limiting guide rail is engaged with the second limiting guide rail, and the first supporting guide rail is engaged with the second supporting guide rail.

[0014] Optionally, the third limiting guide wheel is in a "V" shape or an inverted "V" shape, and accordingly, the shapes of the first limiting guide rail and the second limiting guide rail are adapted to the shape of the third limiting guide wheel, and the third supporting guide wheel is a flat guide wheel, and accordingly, the shapes of the first supporting guide rail and the second supporting guide rail are adapted to the shape of the third supporting guide wheel.

[0015] Optionally, the movable carrier and the fixed carrier are detachably connected via a connecting plate assembly and a bolt assembly, wherein the connecting plate assembly is used for joining or separating the first guide rail and the second guide rail, and the bolt assembly is used for joining or separating the first frame and the second frame.

[0016] The beneficial effects of the lower transmission vertical roller mill shaft replacement device of the present invention are as follows: through the arrangement of the fixed bearing member, the movable bearing member and the replacement vehicle, the fixed arrangement of the fixed bearing member and the detachable arrangement between the movable bearing member and the fixed bearing member, when the shaft connection is not replaced, the movable bearing member can be removed, which does not affect the normal use of the other parts of the vertical roller mill, and does not affect the rolling work. The complete bearing member formed after the movable bearing member and the fixed bearing member are engaged can ensure the sliding bearing of the replacement vehicle, that is, it ensures that the replacement vehicle loaded with the shaft connection is in a position close to the power assembly (this position realizes power engagement) and a position away from the power assembly (this position realizes the power release) The smooth movement between the replacement and lifting (hoisting) ensures the stability and safety of the coupling during the replacement process. When replacing the coupling, the coupling is fixed on the replacement vehicle, and the coupling will not be lifted alone. The coupling moves with the replacement vehicle on the fixed bearing member and the movable bearing member. Therefore, when it moves to a position away from the power assembly and corresponding to the rack window, the replacement vehicle and the coupling can be lifted out of the rack window or lifted into the rack window as a whole with the help of a lifting device (such as a crane, etc.), and obstacles will not form a block. Compared with the traditional replacement method, there is no need to manually wrap the wire rope around the coupling for lifting, which greatly reduces the labor intensity, improves the replacement efficiency of the coupling, and is also easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of replacing the connecting shaft from the top of the frame window in an embodiment of the present invention is shown; Figure 2 It shows a structural schematic diagram of replacing a connecting shaft in an embodiment of the present invention; Figure 3 Shows Figure 2 Schematic diagram of the structure in the GG direction; Figure 4 A top view of a rolling mill frame in an embodiment of the present invention is shown; Figure 5 A side view of a rolling mill frame in an embodiment of the present invention is shown; Figure 6 A side view showing the cooperation between the replacement vehicle and the connecting shaft in the embodiment of the present invention is shown; Figure 7 A three-dimensional schematic diagram of a replacement vehicle in an embodiment of the present invention is shown; Figure 8 A side view of a movable bearing member in an embodiment of the present invention is shown; Fig. 9 A three-dimensional schematic diagram of a mobile bearing member in an embodiment of the present invention is shown; Fig.10 A side view of a fixed bearing member in an embodiment of the present invention is shown; Fig.11 A three-dimensional schematic diagram of a fixed bearing member in an embodiment of the present invention is shown; Fig.12 A schematic diagram of the structure in which the first guide rail and the second guide rail cooperate through the first connecting plate and the second connecting plate in an embodiment of the present invention is shown.

[0018] Description of reference numerals: 1. Fixed bearing member; 101. First limiting guide rail; 102. First supporting guide rail; 103. First frame; 2. Mobile bearing member; 201. Second limiting guide rail; 202. Second supporting guide rail; 203. Second frame; 3. Replacement vehicle; 301. Third limiting guide wheel; 302. Third supporting guide wheel; 303. Pressing ring; 304. Lifting ring; 305. Vehicle body; 4. Connecting shaft; 5. Rolling mill frame; 6. Main reducer; 7. Main motor; 8. First connecting plate; 9. Second connecting plate; 10. Frame window; 11. AWC hydraulic cylinder mounting hole; 12. Balancing cylinder mounting hole; 13. Main connecting shaft mounting hole; 14. Extension. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0020] The Z axis in the drawings represents the vertical direction, that is, the up and down position, and the positive direction of the Z axis represents the top, and the reverse direction of the Z axis represents the bottom; the X axis in the drawings represents the horizontal direction, and is designated as the front and back position, and the positive direction of the X axis represents the front side, and the reverse direction of the X axis represents the back side; the Y axis in the drawings represents the left and right position, and the positive direction of the Y axis represents the left side, and the reverse direction of the Y axis represents the right side. It should also be noted that the aforementioned Z axis, Y axis, and X axis are only for the convenience of describing the present invention and simplifying the description, and 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.

[0021] In the description of this specification, the description with reference to the terms "embodiment", "one embodiment" and "one implementation" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or implementation are included in at least one embodiment or implementation of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or implementation. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or implementations in a suitable manner.

[0022] See also Figure 4 and Figure 5, the lower transmission vertical roller mill, along the positive direction of the X-axis is the operating side, along the negative direction of the X-axis is the transmission side, the lower transmission vertical roller mill realizes transmission from a position close to the bottom, the lower transmission vertical roller mill includes a rolling mill frame 5, on the columns on the transmission side and the operating side of the rolling mill frame 5, AWC hydraulic cylinder mounting holes 11, balancing cylinder mounting holes 12 and main connecting shaft mounting holes 13 are opened in sequence from top to bottom along the vertical direction, then the connecting shaft 4 is installed in the main connecting shaft mounting hole 13, the AWC hydraulic cylinder mounting hole 11 is used to install the AWC hydraulic cylinder, the balancing cylinder mounting hole 12 is used to install the balancing cylinder, and the main connecting shaft mounting hole 13 is used to install the connecting shaft 4, under the action of the AWC hydraulic cylinder and the balancing cylinder, the opening degree of the roller (on the roller bearing seat) is adjusted and the roller is pulled back and reset, the power of the power assembly is transmitted to the roller through the connecting shaft 4, the vertical roller is rotatably installed between the roller bearing seats, and the roller bearing seat is slidably installed on the rolling mill frame 5.

[0023] Reference Figure 1 and Figure 2 As shown, in order to solve the above-mentioned technical problems, the present invention proposes a lower transmission vertical roller mill shaft replacement device, which is used for replacing the shaft 4 on the rolling mill frame 5, and the shaft 4 is used to transmit the power of the power assembly to the roller shaft. The lower transmission vertical roller mill shaft replacement device comprises a fixed bearing 1, a movable bearing 2 and a replacement vehicle 3. The fixed bearing 1 is arranged at the bottom of the rolling mill frame 5 and is close to the power assembly. At one end of the fixed bearing 1 away from the power assembly, the movable bearing 2 is detachably engaged with the fixed bearing 1, and the two are engaged to form a complete bearing. The bearing is used to carry the replacement vehicle 3, and the replacement vehicle 3 can reciprocate on the movable bearing 2 and the fixed bearing 1, and is used to fix and transport the shaft 4. The rolling mill frame 5 is provided with a frame window 10 that is arranged vertically and horizontally, and the frame window 10 is opposite to the movable bearing 2 up and down. The replacement vehicle 3 fixed with the shaft 4 is used to pass through the frame window 10 under the action of external force.

[0024] Specifically, the power assembly may include a main reducer 6 and a main motor 7, the main reducer 6 is arranged at the outer position below the rolling mill frame 5, the main reducer 6 is arranged at the output end of the main motor 7, and the connecting shaft 4 realizes the power transmission between the main reducer 6 and the roller shaft, the fixed bearing 1 is arranged close to the main motor 7 and is located below the rolling mill frame 5 (when the connecting shaft 4 is replaced, the fixed bearing 1 has been pre-installed on the pit foundation at the bottom of the rolling mill frame 5, and then the movable bearing 2 can be installed), and the movable bearing 2 is located at the end of the fixed bearing 1 away from the power assembly after installation, and can be close to the center below the rolling mill frame 5, and the movable bearing 2 is detachably connected to the fixed bearing 1, so the two are connected to form a complete bearing, and the replacement vehicle 3 can be on the bearing formed by the fixed bearing 1 and the movable bearing 2. The connecting shaft 4 can slide smoothly on the rolling mill frame 5 and can be separated from the bearing member under the action of external force, and the replacement vehicle 3 can fix the connecting shaft 4, then the connecting shaft 4 can be directly placed on the replacement vehicle 3 after being removed from the rolling mill frame 5, and then moved with the replacement vehicle 3 in the direction of the mobile bearing member 2, that is, moved from the direction away from the main reducer 6 to a position below a suitable frame window 10, to avoid collision with relevant parts of the rolling mill frame 5 during the lifting process, and then the replacement vehicle 3 and the connecting shaft 4 are lifted away from the frame window 10 as a whole, while the installation process of the connecting shaft 4 is the opposite process, the replacement vehicle 3 and the connecting shaft 4 are lifted into the mobile bearing member 2 from above the rolling mill frame 5 through the frame window 10 as a whole, and then move along the mobile bearing member 2 toward the fixed bearing member 1, and then after moving to the appropriate position, the connecting shaft 4 can be directly connected to the main reducer 6.

[0025] In this embodiment, through the arrangement of the fixed bearing member 1, the mobile bearing member 2 and the replacement vehicle 3, the fixed arrangement of the fixed bearing member 1 and the detachable arrangement between the mobile bearing member 2 and the fixed bearing member 1, when the connecting shaft 4 is not replaced, the mobile bearing member 2 can be dismantled, which will not affect the normal use of the other parts of the vertical roller rolling mill, and will not affect the rolling work. The complete bearing member formed after the mobile bearing member 2 is engaged with the fixed bearing member 1 can ensure the sliding bearing of the replacement vehicle 3, that is, it ensures the smooth movement of the replacement vehicle 3 loaded with the connecting shaft 4 between the position close to the power assembly (this position realizes power engagement) and the position far away from the power assembly (this position realizes hoisting when the power is released), ensuring The stability and safety of the connecting shaft 4 during the replacement process are guaranteed. When replacing the connecting shaft 4, the connecting shaft 4 is fixed on the replacement vehicle 3, and the connecting shaft 4 will not be lifted alone. The connecting shaft 4 moves with the replacement vehicle 3 on the fixed bearing member 1 and the movable bearing member 2. Therefore, when moving to a position away from the power assembly and corresponding to the frame window 10, the replacement vehicle 3 and the connecting shaft 4 can be lifted out of the frame window 10 or lifted into the frame window 10 as a whole with the help of a lifting device (such as a crane, etc.), and obstacles will not form a blockage. Compared with the traditional replacement method, there is no need to manually wrap the wire rope around the connecting shaft 4 for lifting, which greatly reduces the labor intensity and improves the replacement efficiency of the connecting shaft 4, and is also easy to operate.

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, as an optional embodiment of the present invention, the replacement vehicle 3 includes a pressure ring 303, a lifting ring 304 and a vehicle body 305. The vehicle body 305 is slidably matched with the support member and can be detached from the support member. The lifting ring 304 is fixed to the vehicle body 305. The pressure ring 303 is detachably connected to the vehicle body 305. When the pressure ring 303 is connected to the vehicle body 305, a storage space for accommodating the connecting shaft 4 is enclosed therebetween.

[0027] Specifically, the vehicle body 305 is a rectangular vehicle frame, and a plurality of auxiliary supporting beams are provided in the middle thereof for supporting the connecting shaft 4. The supporting beams are provided with arc-shaped supporting openings, which are adapted to different sections of the connecting shaft 4 (the diameters of different sections of the connecting shaft 4 are different). The vehicle body 305 itself is also provided with supporting openings. Along the X-axis direction, the pressure rings 303 are provided at both ends, so that the connecting shaft 4 supported on the vehicle body 305 can be fixed at multiple points, and the connecting shaft 4 is fixed on the vehicle body 305, that is, stuck in the accommodating space. The sizes of the two pressure rings 303 are different, which are adapted to the diameters of the corresponding sections of the connecting shaft 4, so that the connecting shaft 4 is fixed on the vehicle body 305. 5 is not prone to radial sliding. The shape of the pressure ring 303 is similar to half a clamp. Holes are provided at both ends of the pressure ring 303 for corresponding bolts to be threadedly connected with the threaded holes on the vehicle body 305. As for the lifting ring 304, there are generally multiple groups, which can be distributed at the four vertices of the rectangular frame. Therefore, the replacement vehicle 3 and the connecting shaft 4 can be hoisted as a whole through the lifting ring 304. The structural setting of the replacement vehicle 3 ensures the realization of the lifting function, the realization of the function of supporting and fixing the connecting shaft 4, and the realization of the sliding function along the fixed bearing member 1 and the movable bearing member 2. It can be seen that the replacement vehicle 3 is a key component when the connecting shaft 4 is replaced.

[0028] like Fig.10 and Fig.11 As shown, as an optional embodiment of the present invention, the fixed support member 1 includes a first frame 103 and a first guide rail, the first guide rail is fixed to the top of the first frame 103, the first guide rail is used to slide and support the vehicle body 305, and the first guide rail extends from the bottom of the rolling mill frame 5 to the position of the power assembly.

[0029] Specifically, the first frame 103 is a bracket formed by fixing multiple horizontal beams and vertical beams. As a fixed bracket, it is set close to the main reducer 6 of the power assembly, and it generally does not need to be removed after the connecting shaft 4 is installed or disassembled. When the first guide rail is arranged at the top of the first frame 103, the rail base is arranged at the top of the first frame 103, and the first guide rail slides to carry the vehicle body 305, which means that the vehicle body 305 can slide along the first guide rail, and can be detached from the first guide rail under the action of external force, or placed on the first guide rail under the action of external force.

[0030] like Figure 8 and Fig. 9 As shown, as an optional embodiment of the present invention, the movable support 2 includes a second frame 203 and a second guide rail, the second guide rail is fixed to the top of the second frame 203, the second guide rail is used to slide and support the vehicle body 305, when the fixed support 1 is engaged with the movable support 2, the first guide rail and the second guide rail are engaged to form the guide rail of the support.

[0031] Specifically, the second frame 203 is a bracket formed by fixing multiple horizontal beams and vertical beams. As a movable component, the bottom of the second frame 203 can be provided with rollers, so that the resistance can be reduced during movement. When the second guide rail is arranged at the top of the second frame 203, the rail base is arranged at the top of the second frame 203, and the second guide rail slides to support the vehicle body 305. This means that the vehicle body 305 can slide along the second guide rail, and can be detached from the second guide rail under the action of external force, or placed on the second guide rail under the action of external force. It should be noted that the first guide rail and the second guide rail need to be seamlessly connected to ensure that the replacement vehicle 3 with the connecting shaft 4 slides smoothly between the fixed support 1 and the movable support 2.

[0032] like Figure 6 , Figure 7 , Figure 8 and Fig.10 As shown, as an optional embodiment of the present invention, the replacement vehicle 3 also includes a third limiting guide wheel 301 and a third supporting guide wheel 302, and the third limiting guide wheel 301 and the third supporting guide wheel 302 are respectively installed on both sides of the vehicle body 305, and the third limiting guide wheel 301 and the third supporting guide wheel 302 can roll linearly along the guide rail of the carrier.

[0033] Specifically, the third limiting guide wheel 301 plays a limiting role in the process of the vehicle body 305 sliding along the guide rail of the bearing member, ensuring that the vehicle body 305 will not deviate, so that the replacement vehicle 3 loaded with the connecting shaft 4 moves along a straight line when moving, whether from the fixed bearing member 1 to the movable bearing member 2, or from the movable bearing member 2 to the fixed bearing member 1. Exemplarily, the third limiting guide wheel 301 and the third supporting guide wheel 302 can both be flat guide wheels, then the first limiting guide rail 101 and the second limiting guide rail 201, as well as the first supporting guide rail 102 and the second supporting guide rail 202 can be guide rails with grooves, and the grooves The width of the third limiting guide wheel 301 is equivalent to the width of the third limiting guide wheel 301. The third limiting guide wheel 301 can also be a "W"-shaped or "M"-shaped guide wheel. The shapes of the first limiting guide rail 101 and the second limiting guide rail 201 are adapted thereto. When the third limiting guide wheel 301 and the third supporting guide wheel 302 slide along the first guide rail and the second guide rail, they are both arranged on the guide rail surface, and the guide rail surface is pressed by their own weight and the connecting shaft 4. In this way, the guide rail of the bearing component plays a role of sliding bearing, ensuring the stability and safety of the connecting shaft 4 during the replacement process, and the replacement vehicle 3 and the connecting shaft 4 can be separated from the guide rail of the bearing component as a whole under the action of external force.

[0034] like Figure 7 As an optional embodiment of the present invention, the third limiting guide wheels 301 and the third supporting guide wheels 302 are respectively provided with multiple groups and are evenly distributed on the vehicle body 305.

[0035] Specifically, in Figure 7 In the figure, illustratively, along the X-axis direction, two third limiting guide wheels 301 are provided, and two third supporting guide wheels 302 are provided, preferably, they are arranged on the outer side surface of the end of the vehicle body 305, and the distances between the outer wheel surface and the center of the wheel axle of the third limiting guide wheel 301 and the third supporting guide wheel 302 along the Y-axis direction are equal, that is, the heights of the vehicle body 305 are equal, to ensure that the vehicle body 305 is stably arranged on the guide rail of the carrier.

[0036] like Figure 1 , Figure 2 , Fig.10 and Fig.11 As shown, as an optional embodiment of the present invention, the first guide rail includes a first limiting guide rail 101 and a first supporting guide rail 102, the first limiting guide rail 101 and the first supporting guide rail 102 are arranged in parallel on both sides of the top of the first frame 103, the first limiting guide rail 101 cooperates with the third limiting guide wheel 301, and the first supporting guide rail 102 cooperates with the third supporting guide wheel 302.

[0037] Specifically, the first limiting guide rail 101 and the first supporting guide rail 102 are respectively arranged in two parallel positions in the Y-axis direction and extend along the X-axis direction. The first limiting guide rail 101 cooperates with the third limiting guide wheel 301 to ensure that the third limiting guide wheel 301 is strictly limited when rolling on the first limiting guide rail 101 and can only achieve linear motion. The first supporting guide rail 102 cooperates with the third supporting guide wheel 302 to ensure that the third supporting guide wheel 302 plays a supporting role when rolling on the first supporting guide rail 102. Of course, the first limiting guide rail 101 also supports the third limiting guide wheel 301.

[0038] like Figure 1 , Figure 2 , Figure 8 and Fig. 9 As shown, as an optional embodiment of the present invention, the second guide rail includes a second limiting guide rail 201 and a second supporting guide rail 202. Along the length direction of the connecting shaft 4, the second limiting guide rail 201 and the second supporting guide rail 202 are parallelly arranged on both sides of the top of the second frame 203. The second limiting guide rail 201 cooperates with the third limiting guide wheel 301, and the second supporting guide rail 202 cooperates with the third supporting guide wheel 302. When the first guide rail and the second guide rail are engaged, the first limiting guide rail 101 is engaged with the second limiting guide rail 201, and the first supporting guide rail 102 is engaged with the second supporting guide rail 202.

[0039] Specifically, the second limiting guide rail 201 and the second supporting guide rail 202 are two parallel ones respectively arranged in the Y-axis direction and extend along the X-axis direction. The second limiting guide rail 201 cooperates with the third limiting guide wheel 301 to achieve that when the third limiting guide wheel 301 rolls on the second limiting guide rail 201, it is strictly limited and can only achieve linear motion. The second supporting guide rail 202 cooperates with the third supporting guide wheel 302 to achieve that when the third supporting guide wheel 302 rolls on the second supporting guide rail 202, it plays a supporting role. Due to the engagement of the first rail and the second rail, the engagement of the first limiting guide rail 101 and the second limiting guide rail 201 and the engagement of the first supporting guide rail 102 and the second supporting guide rail 202 are respectively achieved. Then, after the replacement vehicle 3 carries the connecting shaft 4, it can slide across the bearing member, that is, it can smoothly slide on the fixed bearing member 1 and the movable bearing member 2, and it can be smoothly realized whether it is from the fixed bearing member 1 to the movable bearing member 2 or from the movable bearing member 2 to the fixed bearing member 1.

[0040] like Figure 7 , Figure 8 and Fig.10 As shown, as an optional embodiment of the present invention, the third limiting guide wheel 301 is in a "V" shape or an inverted "V" shape, and accordingly, the shapes of the first limiting guide rail 101 and the second limiting guide rail 201 are adapted to the shape of the third limiting guide wheel 301, and the third supporting guide wheel 302 is a flat guide wheel, and accordingly, the shapes of the first supporting guide rail 102 and the second supporting guide rail 202 are adapted to the shape of the third supporting guide wheel.

[0041] Specifically, when the cross section of the third limiting guide wheel 301 (seen from the direction of the X-axis) is a "V" shape or an inverted "V" shape, the shapes of the first limiting guide rail 101 and the second limiting guide rail 201 are respectively a "V" shape or an inverted "V" shape, so that the wheel body of the third limiting guide wheel 301 and the guide surfaces of the first limiting guide rail 101 and the second limiting guide rail 201 can slide and fit together, so that when the third limiting guide wheel 301 rolls along the first limiting guide rail 101 and the second limiting guide rail 201, it will not lose its direction and will strictly move along the length direction of the first limiting guide rail 101 and the second limiting guide rail 201. 02 and the third limiting guide wheel 301 are both arranged on the vehicle body 305. When the third supporting guide wheel 302 rolls along the first supporting guide rail 102 and the second supporting guide rail 202, it will also strictly move along the length direction of the first supporting guide rail 102 and the second supporting guide rail 202. The shapes of the first limiting guide rail 101 and the second limiting guide rail 201 are adapted to the shape of the third limiting guide wheel 301, which plays a guiding role. The supporting effect of the first limiting guide rail 101 and the second supporting guide rail 202 on the third supporting guide wheel 302 can also be smoothly realized, which can generally prevent the replacement vehicle 3 from deviating during the movement of the guide rails of the carrier.

[0042] It should be noted that the ends of the fixed carrier 1 and the movable carrier 2 are provided with limit blocks to limit the movement of the replacement vehicle 3, and the fixed carrier 1 is also provided with bolt holes, which are fixed by bolts to fix the replacement vehicle 3 on the fixed carrier 1 when the movable carrier 2 is removed.

[0043] like Fig. 9 , Fig.10 , Fig.11 and Fig.12 As shown, as an optional embodiment of the present invention, the movable support 2 and the fixed support 1 are detachably connected via a connecting plate assembly and a bolt assembly, the connecting plate assembly is used for joining or separating the first guide rail and the second guide rail, and the bolt assembly is used for joining or separating the first frame 103 and the second frame 203.

[0044] Specifically, when the movable bearing member 2 is connected or separated from the fixed bearing member 1, the connection plate assembly and the bolt assembly are used to realize that, for the first guide rail and the second guide rail, the ends of the rail base of the second limit rail 201 and the second support rail 202 close to the fixed bearing member 1 are both provided with a first connection plate 8, and the ends of the rail bases of the first limit rail 101 and the first support rail 102 close to the movable bearing member 2 are both provided with a second connection plate 9, and the first connection plate 8 and the second connection plate 9 are as follows: Fig.12 The plug-in fit shown in the figure is fixed by bolts; for the first frame 103 and the second frame 203, an extension portion 14 is provided on the second frame 203, and the extension portion 14 is arranged along the length direction of the connecting shaft 4. The extension portion 14 is integrated with the first frame 103 and is provided with a plurality of bolt holes. The plurality of bolt holes and the bolts cooperate to form a bolt assembly, thereby not only realizing the detachable separation between the first frame 103 and the second frame 203, but also realizing the detachable separation between the first guide rail and the second guide rail. The guide rail connection of the bearing member is tighter, and the guide rail connection gap is reduced, which is conducive to the stable movement of the connecting shaft 4 on the guide rail of the bearing member with the replacement vehicle 3.

[0045] The steps of disassembling and assembling the connecting shaft 4 are described in detail below in combination with specific components, as follows: 1. Move the roller bearing seat assembly and the bracket of the balancing device (balancing cylinder) of the vertical roller out of the frame window 10; 2. Retract the AWC hydraulic cylinder and the balance cylinder to the shortest stroke; 3. Remove relevant hydraulic and electrical connections as needed; 4. Install the fixed bearing member 1 and fix it with expansion bolts; 5. Install the movable bearing member 2 and level it, and connect it with the fixed bearing member 1 so that the first guide rails and the second guide rails of the two brackets are in the same plane; 6. Fix the connecting shaft 4 to the vehicle body 305 with a pressing ring 303, and keep the flanges on both sides of the connecting shaft 4 at a certain distance; 7. The overhead crane lifts the replacement vehicle 3 and keeps the connecting shaft 4 level; 8. Lift the replacement vehicle 3 and the connecting shaft 4 into the frame window 10, and drop the replacement vehicle 3 onto the mobile bearing member 2; 9. Move the replacement vehicle 3 to the fixed bearing member 1 so that the flange of the connecting shaft 4 and the flange of the main reducer 6 are in the installation position; Rack window 10, use bolts to fix the replacement vehicle 3 on the fixed bearing member 1, and remove the mobile bearing member 2; 11. The bracket and bevel gear box hoisted into the balancing device (balancing cylinder); 12. Remove the pressure ring 303 and bolts of the replacement vehicle 3 to disengage the connecting shaft 4 from the replacement vehicle 3; 13. The overhead crane lifts the connecting shaft 4, and the flanges on both sides of the connecting shaft 4 are respectively connected and fixed to the main reducer 6 and the bevel gear box; 14. Reverse the installation steps to obtain the disassembly steps.

[0046] The above description is only a specific embodiment of the present invention, so that those skilled in the art can understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but should conform to the widest scope consistent with the principles and novel features invented herein.

[0047] Although the present invention is disclosed as above, the protection scope of the present invention is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention, and these changes and modifications will fall within the protection scope of the present invention.

Claims

1. A device for replacing the shaft of a lower transmission vertical roller mill, characterized in that: Used to replace a connecting shaft (4) on a rolling mill frame (5), the connecting shaft (4) being used to transmit power of a power assembly to a roller shaft, the lower drive vertical roller mill connecting shaft replacement device comprising a fixed bearing (1), a movable bearing (2) and a replacement vehicle (3), the fixed bearing (1) being arranged at the bottom of the rolling mill frame (5) and close to the power assembly, the movable bearing (2) being detachably engaged with the fixed bearing (1) at one end of the fixed bearing (1) away from the power assembly, and the two bearings being After joining, a complete bearing component is formed, and the bearing component is used to carry the replacement vehicle (3). The replacement vehicle (3) can move back and forth on the movable bearing component (2) and the fixed bearing component (1), and is used to fix and transport the connecting shaft (4). The rolling mill frame (5) is provided with a frame window (10) that penetrates the frame from top to bottom. The frame window (10) is opposite to the movable bearing component (2) from top to bottom. The replacement vehicle (3) fixed with the connecting shaft (4) is used to pass through the frame window (10) under the action of external force.

2. The lower drive vertical roller mill shaft replacement device according to claim 1 is characterized in that: The replacement vehicle (3) comprises a pressure ring (303), a lifting ring (304) and a vehicle body (305); the vehicle body (305) is slidably matched with the supporting member and can be separated from the supporting member; the lifting ring (304) is fixedly arranged on the vehicle body (305); the pressure ring (303) is detachably connected to the vehicle body (305); when the pressure ring (303) is connected to the vehicle body (305), an accommodating space for accommodating the connecting shaft (4) is formed between the two.

3. The lower transmission vertical roller mill shaft replacement device according to claim 2 is characterized in that: The fixed bearing member (1) comprises a first frame (103) and a first guide rail, wherein the first guide rail is fixed to the top of the first frame (103), the first guide rail is used for slidingly bearing the vehicle body (305), and the first guide rail extends from the bottom of the rolling mill frame (5) to the position of the power assembly.

4. The device for replacing the shaft of a lower transmission vertical roller mill according to claim 3 is characterized in that: The movable support (2) comprises a second frame (203) and a second guide rail, wherein the second guide rail is fixed to the top of the second frame (203), and the second guide rail is used to slide and support the vehicle body (305). When the fixed support (1) is engaged with the movable support (2), the first guide rail and the second guide rail are engaged to form the guide rail of the support.

5. The lower transmission vertical roller mill connecting shaft replacement device according to claim 4 is characterized in that: The replacement vehicle (3) further comprises a third position-limiting guide wheel (301) and a third support guide wheel (302), wherein the third position-limiting guide wheel (301) and the third support guide wheel (302) are respectively mounted on two sides of the vehicle body (305), and the third position-limiting guide wheel (301) and the third support guide wheel (302) can roll linearly along the guide rail of the bearing member.

6. The device for replacing the shaft of a lower transmission vertical roller mill according to claim 5, characterized in that: The third position-limiting guide wheels (301) and the third supporting guide wheels (302) are respectively provided in multiple groups and are evenly distributed on the vehicle body (305).

7. The device for replacing the shaft of a lower transmission vertical roller mill according to claim 5, characterized in that: The first guide rail comprises a first position-limiting guide rail (101) and a first supporting guide rail (102); the first position-limiting guide rail (101) and the first supporting guide rail (102) are arranged in parallel on both sides of the top of the first frame (103); the first position-limiting guide rail (101) cooperates with the third position-limiting guide wheel (301), and the first supporting guide rail (102) cooperates with the third supporting guide wheel (302).

8. The device for replacing the shaft of a lower transmission vertical roller mill according to claim 7, characterized in that: The second guide rail comprises a second limiting guide rail (201) and a second supporting guide rail (202); the second limiting guide rail (201) and the second supporting guide rail (202) are arranged in parallel on both sides of the top of the second frame (203); the second limiting guide rail (201) cooperates with the third limiting guide wheel (301); the second supporting guide rail (202) cooperates with the third supporting guide wheel (302); when the first guide rail and the second guide rail are engaged, the first limiting guide rail (101) is engaged with the second limiting guide rail (201); and the first supporting guide rail (102) is engaged with the second supporting guide rail (202).

9. The device for replacing the shaft of a lower transmission vertical roller mill according to claim 8, characterized in that: The third position-limiting guide wheel (301) is in a "V" shape or an inverted "V" shape, and accordingly, the shapes of the first position-limiting guide rail (101) and the second position-limiting guide rail (201) are adapted to the shape of the third position-limiting guide wheel (301); the third support guide wheel (302) is a flat guide wheel, and accordingly, the shapes of the first support guide rail (102) and the second support guide rail (202) are adapted to the shape of the third support guide wheel.

10. The device for replacing the shaft of a lower transmission vertical roller mill according to any one of claims 4 to 9, characterized in that: The movable bearing member (2) and the fixed bearing member (1) are detachably connected via a connecting plate assembly and a bolt assembly, the connecting plate assembly being used for joining or separating the first guide rail and the second guide rail, and the bolt assembly being used for joining or separating the first frame body (103) and the second frame body (203).

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