A lower transmission vertical roll rolling mill joint shaft replacement device

Abstract

The application provides a lower transmission vertical roller mill joint shaft replacement device, and relates to the technical field of rolling mill accessories. The lower transmission vertical roller mill joint shaft replacement device comprises a device for replacing a joint shaft on a rolling mill rack, wherein the joint shaft is used for transmitting power of a power assembly to a roller shaft. The lower transmission vertical roller mill joint 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 rack and 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 bearings form a complete bearing after engagement, which is used for bearing the replacement vehicle. The replacement vehicle can reciprocate on the movable bearing and the fixed bearing. The application greatly reduces labor intensity, improves the replacement efficiency of the joint shaft and is convenient to operate.

Description

Technical Field

[0001] This invention relates to the field of rolling mill accessories technology, and more specifically, to a replacement device for the connecting shaft of a lower drive vertical roll rolling mill. Background Technology

[0002] The mill's connecting shaft is an important component, used to transmit power between the power unit and the roll shaft.

[0003] The connecting shaft of a down-drive vertical roll mill is usually located in an underground tunnel below the mill frame, with obstacles on both sides and above the connecting shaft.

[0004] In related technologies, when replacing the connecting shaft of a lower drive vertical roll mill, it is generally done manually with the help of an overhead crane and wire rope. This manual labor is labor-intensive, difficult to operate, and carries certain risks. Summary of the Invention

[0005] The problem this invention aims to solve is that manual replacement of the shaft using a crane and wire rope is labor-intensive, difficult to operate, and carries certain risks.

[0006] To address the aforementioned problems, this invention provides a lower-drive vertical roll mill coupling replacement device for replacing couplings on the mill stand. The coupling transmits power from the power assembly to the roll shaft. The device includes a fixed support, a movable support, and a replacement trolley. The fixed support is located at the bottom of the mill stand and close to the power assembly. At the end of the fixed support away from the power assembly, the movable support is detachably connected to the fixed support, forming a complete support. The support carries the replacement trolley, which can reciprocate between the movable and fixed support and is used to fix and transport the coupling. The mill stand has a vertically penetrating frame window, which is vertically opposite to the movable support. The replacement trolley, with the coupling fixed to it, passes through the frame window under external force.

[0007] Optionally, the replacement vehicle includes a pressure ring, a lifting ring, and a vehicle body. The vehicle body is slidably engaged with the carrier and can be detached from the carrier. The lifting ring is fixedly mounted on the vehicle body, and the pressure ring is detachably connected to the vehicle body. When the pressure ring is connected to the vehicle body, the two form a receiving space for accommodating the connecting shaft.

[0008] Optionally, the fixed support includes a first frame and a first guide rail, the first guide rail being fixed to the top of the first frame and used to slide and support the vehicle body, the first guide rail extending from the bottom of the rolling mill stand to the location 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 and is used to slide and support the vehicle body. When the fixed carrier engages with the movable carrier, the first guide rail and the second guide rail engage to form the guide rail of the carrier.

[0010] Optionally, the replacement vehicle further includes a third limiting guide wheel and a third supporting guide wheel, which are respectively installed on both sides of the vehicle body. 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 wheel and the third supporting guide wheel are provided in multiple sets and 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 shaft, the first limiting guide rail and the first supporting guide rail are arranged parallel to each other 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 parallel to each other on the top two sides 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. 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 "V" shaped or inverted "V" shaped, and correspondingly, 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. The third supporting guide wheel is a flat guide wheel, and correspondingly, 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 support and the fixed support are detachably connected by 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 and the second frame.

[0016] The beneficial effects of the lower drive vertical roll mill coupling replacement device of the present invention are as follows: Through the arrangement of a fixed support member, a movable support member, and a replacement carriage, the fixed support member is fixed in place, and the movable support member is detachable from the fixed support member. When the coupling is not being replaced, the movable support member can be removed without affecting the normal use of other components of the vertical roll mill, and without affecting the rolling operation. The complete support member formed after the movable support member and the fixed support member are joined can ensure the sliding support of the replacement carriage, that is, it ensures that the replacement carriage carrying the coupling is in a position close to the power assembly (where power is engaged) and a position far from the power assembly (where power is disengaged). The smooth movement between the hoisting and other components ensures the stability and safety of the connector during replacement. When replacing the connector, it is fixed on the replacement vehicle and is not lifted separately. The connector moves with the replacement vehicle on the fixed and movable support components. Thus, when it is moved to a position away from the power unit and corresponding to the frame window, the replacement vehicle and connector can be lifted out of or into the frame window as a whole using a lifting device (such as an overhead crane). Obstacles will not pose a hindrance. Compared with the traditional replacement method, it is not necessary to manually wrap the wire rope around the connector for hoisting, which greatly reduces labor intensity and improves the replacement efficiency of the connector, and is also easier to operate. Attached Figure Description

[0017] Figure 1 This diagram illustrates a structure for replacing the connector from the top of the rack window in an embodiment of the present invention.

[0018] Figure 2 This diagram illustrates the structure of the replacement coupling in an embodiment of the present invention.

[0019] Figure 3 It shows Figure 2 Schematic diagram of the structure in the GG direction;

[0020] Figure 4 A top view of a rolling mill stand in an embodiment of the present invention is shown;

[0021] Figure 5 A side view of a rolling mill stand in an embodiment of the present invention is shown;

[0022] Figure 6 A side view of the replacement vehicle and the axle assembly in an embodiment of the present invention is shown;

[0023] Figure 7 A three-dimensional schematic diagram of the vehicle replacement in an embodiment of the present invention is shown;

[0024] Figure 8 A side view of the movable support member in an embodiment of the present invention is shown;

[0025] Figure 9A three-dimensional schematic diagram of the movable support component in an embodiment of the present invention is shown;

[0026] Figure 10 A side view of the fixed support member in an embodiment of the present invention is shown;

[0027] Figure 11 A three-dimensional schematic diagram of the fixed support member in an embodiment of the present invention is shown;

[0028] Figure 12 A schematic diagram of the structure of the first guide rail and the second guide rail in an embodiment of the present invention is shown, which are connected by the first connecting plate and the second connecting plate.

[0029] Explanation of reference numerals in the attached figures:

[0030] 1. Fixed bearing component; 101. First limiting guide rail; 102. First support guide rail; 103. First frame; 2. Movable bearing component; 201. Second limiting guide rail; 202. Second support guide rail; 203. Second frame; 3. Changing car; 301. Third limiting guide wheel; 302. Third support guide wheel; 303. Pressure ring; 304. Lifting ring; 305. Car 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. Balance cylinder mounting hole; 13. Main connecting shaft mounting hole; 14. Extension. Detailed Implementation

[0031] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] In the attached diagram, the Z-axis represents the vertical direction, i.e., up and down, with the positive direction of the Z-axis representing upward and the negative direction representing downward. The X-axis represents the horizontal direction and is designated as front and back, with the positive direction of the X-axis representing the front and the negative direction representing the back. The Y-axis represents the left and right position, with the positive direction of the Y-axis representing the left and the negative direction representing the right. It should be noted that the aforementioned representations of the Z, Y, and X axes are merely for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention.

[0033] In the description of this specification, references to terms such as "embodiment," "one embodiment," and "one implementation" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or illustrative implementation of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0034] See Figure 4 and Figure 5 The lower-drive vertical roll mill has an operating side along the positive X-axis and a driving side along the negative X-axis. The lower-drive vertical roll mill achieves transmission from a position near the bottom. The lower-drive vertical roll mill includes a mill frame 5. On the columns of the mill frame 5 on the driving side and the operating side, AWC hydraulic cylinder mounting holes 11, balance cylinder mounting holes 12, and main shaft mounting holes 13 are sequentially opened from top to bottom along the vertical direction. The main shaft 4 is installed in the main shaft mounting hole 13. The AWC hydraulic cylinder mounting hole 11 is used to install the AWC hydraulic cylinder, the balance cylinder mounting hole 12 is used to install the balance cylinder, and the main shaft mounting hole 13 is used to install the main shaft 4. Under the action of the AWC hydraulic cylinder and the balance cylinder, the opening degree of the roll (on the roll bearing seat) is adjusted and the roll is pulled back and reset. The power of the power assembly is transmitted to the roll through the main shaft 4. The vertical roll is rotatably installed between the roll bearing seats, and the roll bearing seats are slidably installed on the mill frame 5.

[0035] Reference Figure 1 and Figure 2 As shown, in order to solve the aforementioned technical problems, the present invention proposes a lower drive vertical roll mill connecting shaft replacement device for replacing the connecting shaft 4 on the mill stand 5. The connecting shaft 4 is used to transmit the power of the power assembly to the roll shaft. The lower drive vertical roll mill connecting shaft replacement device includes a fixed support member 1, a movable support member 2, and a replacement cart 3. The fixed support member 1 is located at the bottom of the mill stand 5 and close to the power assembly. At the end of the fixed support member 1 away from the power assembly, the movable support member 2 is detachably connected to the fixed support member 1, and the two are connected to form a complete support member. The support member is used to carry the replacement cart 3. The replacement cart 3 can reciprocate on the movable support member 2 and the fixed support member 1, and is used to fix and transport the connecting shaft 4. The mill stand 5 is provided with a stand window 10 that runs vertically through the mill. The stand window 10 is vertically opposite to the movable support member 2. The replacement cart 3, on which the connecting shaft 4 is fixed, is used to pass through the stand window 10 under the action of external force.

[0036] Specifically, the power assembly may include a main reducer 6 and a main motor 7. The main reducer 6 is located on the outer side below the mill stand 5, and the output end of the main motor 7 is also located at the main reducer 6. The connecting shaft 4 enables power transmission between the main reducer 6 and the roll shaft. The fixed support 1 is positioned close to the main motor 7 and located below the mill stand 5 (when the connecting shaft 4 is replaced, the fixed support 1 is pre-installed on the pit foundation at the bottom of the mill stand 5, and then the movable support 2 is installed). After installation, the movable support 2 is located at the end of the fixed support 1 away from the power assembly, and can be positioned near the center of the bottom of the mill stand 5. The movable support 2 and the fixed support 1 are detachably connected, and when they are joined, they form a complete support assembly. The replacement vehicle 3 can move along the support assembly formed by the fixed support 1 and the movable support 2. The shaft 4 can slide smoothly and detach from the support under external force. The replacement cart 3 can fix the shaft 4, so the shaft 4 can be directly placed on the replacement cart 3 after being removed from the mill stand 5. Then, the shaft 4 moves with the replacement cart 3 towards the moving support 2, that is, from away from the main reducer 6 to a suitable position below the frame window 10, avoiding collision with related parts of the mill stand 5 during hoisting. Then, the replacement cart 3 and the shaft 4 are hoisted away from the frame window 10 as a whole. The installation process of the shaft 4 is the reverse process. The replacement cart 3 and the shaft 4 are hoisted from above the mill stand 5 through the frame window 10 onto the moving support 2, and then move along the moving support 2 towards the fixed support 1. After moving to the appropriate position, the shaft 4 can be directly connected to the main reducer 6.

[0037] In this embodiment, through the arrangement of the fixed support 1, the movable support 2, and the replacement vehicle 3, the fixed support 1 and the detachable arrangement between the movable support 2 and the fixed support 1 allow the movable support 2 to be removed when the connecting shaft 4 is not being replaced. This does not affect the normal use of other components of the vertical roll mill, nor does it affect the rolling operation. The complete support formed by the movable support 2 and the fixed support 1 ensures the sliding support of the replacement vehicle 3, thus ensuring the smooth movement of the replacement vehicle 3, which is loaded with the connecting shaft 4, between a position close to the power assembly (where power engagement is achieved) and a position far from the power assembly (where lifting is achieved when power is disengaged). The stability and safety of the coupling 4 during the replacement process were verified. When replacing the coupling 4, the coupling 4 is fixed on the replacement cart 3 and is not lifted separately. The coupling 4 moves with the replacement cart 3 on the fixed support 1 and the movable support 2. Thus, when it moves to a position away from the power component and corresponding to the frame window 10, the replacement cart 3 and the coupling 4 can be lifted out of the frame window 10 as a whole with the help of a lifting device (such as an overhead crane), or lifted into the frame window 10. Obstacles will not form an obstruction. Compared with the traditional replacement method, it is not necessary to manually wrap the wire rope with the coupling 4 to achieve hoisting, which greatly reduces the labor intensity and improves the replacement efficiency of the coupling 4, and is also easy to operate.

[0038] like Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7 As shown, in 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 engaged with the carrier and can be detached from the carrier. The lifting ring 304 is fixedly disposed 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, the two form a receiving space for accommodating the connecting shaft 4.

[0039] Specifically, the vehicle body 305 is a rectangular frame with several auxiliary support beams in its middle to support the connecting shaft 4. The support beams have arc-shaped support openings that are adapted to different segments of the connecting shaft 4 (the diameters of the different segments of the connecting shaft 4 are different). The vehicle body 305 itself also has support openings. Along the X-axis, pressure rings 303 are located at both ends, allowing for multi-point fixation of the connecting shaft 4 supported on the vehicle body 305, thus securing the connecting shaft 4 to the vehicle body 305, i.e., locking it within the receiving space. The two pressure rings 303 have different sizes, adapted to the diameters of the corresponding segments of the connecting shaft 4. Therefore, the connecting shaft 4 is fixed to the vehicle body 305. Radial slippage is not easily observed on the 5th. The shape of the pressure ring 303 is similar to half a clamp. The two ends of the pressure ring 303 are respectively provided with holes for the corresponding bolts to be threaded into the threaded holes on the vehicle body 305. As for the lifting ring 304, there are usually multiple sets, which can be distributed at the four vertices of the rectangular frame. Thus, the replacement vehicle 3 and the connecting shaft 4 can be lifted as a whole through the lifting ring 304. The structural design 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 function of sliding along the fixed bearing 1 and the moving bearing 2. It can be seen that the replacement vehicle 3 is a key component when replacing the connecting shaft 4.

[0040] like Figure 10 and Figure 11 As shown, in 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 and is used to slide and support the vehicle body 305. The first guide rail extends from the bottom of the rolling mill stand 5 to the position of the power component.

[0041] Specifically, the first frame 103 is a support structure consisting of multiple horizontal and vertical beams. As a fixed support, it is positioned close to the main reducer 6 of the power assembly. Generally, it does not need to be removed after the connecting shaft 4 is installed or disassembled. When the first guide rail is located on the top of the first frame 103, the first guide rail slides and supports the vehicle body 305. This means that the vehicle body 305 can slide along the first guide rail and can detach from the first guide rail under the action of external force, or be placed on the first guide rail under the action of external force.

[0042] like Figure 8 and Figure 9 As shown, in an optional embodiment of the present invention, the movable carrier 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 and is used to slide and support the vehicle body 305. When the fixed carrier 1 is engaged with the movable carrier 2, the first guide rail and the second guide rail are engaged to form the guide rail of the carrier.

[0043] Specifically, the second frame 203 is a support structure consisting of multiple horizontal and vertical beams. As a movable component, the bottom of the second frame 203 can be equipped with rollers to reduce resistance during movement. When the second guide rail is located at the top of the second frame 203, the second guide rail slides and supports the vehicle body 305. This means that the vehicle body 305 can slide along the second guide rail and can detach from the second guide rail under external force or be placed on the second guide rail under 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.

[0044] like Figure 6 , Figure 7 , Figure 8 and Figure 10 As shown, in an optional embodiment of the present invention, the replacement vehicle 3 further includes a third limiting guide wheel 301 and a third supporting guide wheel 302. 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.

[0045] Specifically, the third limiting guide wheel 301 plays a limiting role during the sliding of the vehicle body 305 along the guide rail of the carrier, ensuring that the vehicle body 305 does not deviate. Thus, when the replacement vehicle 3 carrying the connecting axle 4 moves, whether from the fixed carrier 1 to the movable carrier 2 or from the movable carrier 2 to the fixed carrier 1, it moves in a straight line. For example, both the third limiting guide wheel 301 and the third supporting guide wheel 302 can be flat guide wheels. Therefore, 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. The width of the first limiting guide rail 101 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 to it. 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 located on the guide rail surface. They press the guide rail surface with their own weight and the weight of the connecting shaft 4. This makes the guide rail of the bearing component play a sliding bearing role, ensuring the stability and safety of the connecting shaft 4 during the replacement process. Under the action of external force, the replacement cart 3 and the connecting shaft 4 can be separated from the guide rail of the bearing component as a whole.

[0046] like Figure 7 As an optional embodiment of the present invention, the third limiting guide wheel 301 and the third supporting guide wheel 302 are provided in multiple sets and evenly distributed on the vehicle body 305.

[0047] Specifically, in Figure 7 For example, along the X-axis direction, there are two third limiting guide wheels 301 and two third supporting guide wheels 302, preferably located on the outer surface of the end of the vehicle body 305. Along the Y-axis direction, the distance between the outer wheel surface of the third limiting guide wheel 301 and the third supporting guide wheel 302 and the center of the wheel axle is equal, that is, the height at which the vehicle body 305 is supported is equal, so as to ensure that the vehicle body 305 is stably arranged on the guide rail of the bearing member.

[0048] like Figure 1 , Figure 2 , Figure 10 and Figure 11 As shown, in 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 parallel to each other on the top sides 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.

[0049] Specifically, the first limiting guide rail 101 and the first supporting guide rail 102 are respectively arranged side by side 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 provide support when the third supporting guide wheel 302 rolls on the first supporting guide rail 102. Of course, the first limiting guide rail 101 also provides support for the third limiting guide wheel 301.

[0050] like Figure 1 , Figure 2 , Figure 8 and Figure 9 As shown, in 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 arranged parallel to each other on the top sides 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 engages with the second limiting guide rail 201, and the first supporting guide rail 102 engages with the second supporting guide rail 202.

[0051] Specifically, the second limiting guide rail 201 and the second support guide rail 202 are two parallel rails respectively located 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, so 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 movement. The second support guide rail 202 cooperates with the third support guide wheel 302, so that when the third support guide wheel 302 rolls on the second support guide rail 202, it plays a supporting role. Due to the engagement of the first rail and the second rail, the first limiting guide rail 101 and the second limiting guide rail 201 are engaged, and the first support guide rail 102 and the second support guide rail 202 are engaged, so that the replacement vehicle 3 can slide across the bearing member after bearing the axle 4, that is, it can smoothly slide on the fixed bearing member 1 and the moving bearing member 2. And it can be smoothly realized whether it is from the fixed bearing member 1 to the moving bearing member 2 or from the moving bearing member 2 to the fixed bearing member 1.

[0052] like Figure 7 , Figure 8 and Figure 10 As shown, in an optional embodiment of the present invention, the third limiting guide wheel 301 is "V" shaped or inverted "V" shaped, and correspondingly, 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. The third supporting guide wheel 302 is a flat guide wheel, and correspondingly, 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.

[0053] Specifically, when the cross-section (viewed from the X-axis direction) of the third limiting guide wheel 301 is "V"-shaped or inverted "V", the shapes of the first limiting guide rail 101 and the second limiting guide rail 201 are "V"-shaped or inverted "V"-shaped, respectively. This achieves sliding contact between 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. In this way, 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 move strictly along the length direction of the first limiting guide rail 101 and the second limiting guide rail 201. Due to the third supporting guide wheel 3... Both 02 and the third limiting guide wheel 301 are mounted 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 move strictly 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. Thus, the supporting role of the first limiting guide rail 101 and the second supporting guide rail 202 on the third supporting guide wheel 302 can also be realized smoothly. Overall, it can prevent the replacement vehicle 3 from deviating during the movement of the guide rail of the carrier component.

[0054] It should be noted that both the fixed support 1 and the movable support 2 are equipped with limit blocks at their ends to limit the movement of the replacement vehicle 3. The fixed support 1 is also equipped with bolt holes, which are used to fix the replacement vehicle 3 to the fixed support 1 when the movable support 2 is removed.

[0055] like Figure 9 , Figure 10 , Figure 11 and Figure 12 As shown, in an optional embodiment of the present invention, the movable support member 2 and the fixed support member 1 are detachably connected by 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.

[0056] Specifically, when the movable support member 2 is connected or separated from the fixed support member 1, it is achieved through a connecting plate assembly and a bolt assembly. For the first guide rail and the second guide rail, the ends of the rail bases of the second limiting guide rail 201 and the second supporting guide rail 202 near the fixed support member 1 are each provided with a first connecting plate 8, and the ends of the rail bases of the first limiting guide rail 101 and the first supporting guide rail 102 near the movable support member 2 are each provided with a second connecting plate 9. The first connecting plate 8 and the second connecting plate 9 are connected as follows: Figure 12 The insertion and connection shown are fixed by bolts; for the first frame 103 and the second frame 203, the second frame 203 is provided with an extension 14, which is arranged along the length direction of the connecting shaft 4. The extension 14 and the first frame 103 are integrally provided with multiple bolt holes, which are matched with bolts to form a bolt assembly. This not only realizes the detachable separation between the first frame 103 and the second frame 203, but also the detachable separation between the first guide rail and the second guide rail. The guide rail connection of the bearing component is tighter, the guide rail connection gap is reduced, and the connecting shaft 4 is conducive to the stable movement of the connecting shaft 4 on the guide rail of the bearing component with the replacement vehicle 3.

[0057] The disassembly and assembly steps of connector 4 are explained in detail below, taking a specific component as an example:

[0058] 1. Move the bracket of the vertical roll bearing housing assembly and balancing device (balancing cylinder) out of the frame window 10;

[0059] 2. Retract the AWC hydraulic cylinder and balance cylinder to their shortest stroke position;

[0060] 3. Remove the relevant hydraulic and electrical connections as needed;

[0061] 4. Install and fix the bearing component 1 with expansion bolts;

[0062] 5. Install and level the movable support component 2, and connect it to the fixed support component 1 so that the first guide rail and the second guide rail of the two supports are on the same plane;

[0063] 6. Fix the connecting shaft 4 to the vehicle body 305 with the pressure ring 303, and the flanges on both sides of the connecting shaft 4 are spaced a certain distance apart;

[0064] 7. The overhead crane lifts and replaces car 3, keeping axle 4 level;

[0065] 8. Hoist the replacement car 3 and the connecting shaft 4 into the frame window 10, and place the replacement car 3 on the movable support 2;

[0066] 9. Move the replacement vehicle 3 to the fixed support 1 so that the flange of the connecting shaft 4 and the flange of the main reducer 6 are in the installation position;

[0067] Frame window 10: Use bolts to fix the replacement vehicle 3 to the fixed support 1, and remove the movable support 2;

[0068] 11. The bracket and bevel gearbox for hoisting the balancing device (balancing cylinder);

[0069] 12. Remove the pressure ring 303 and bolts of the replacement vehicle 3 to detach the connecting shaft 4 from the replacement vehicle 3;

[0070] 13. The overhead crane lifts the connecting shaft 4, and the flanges on both sides of the connecting shaft 4 are connected and fixed to the main reducer 6 and the bevel gearbox respectively;

[0071] 14. Reversing the installation steps will give you the disassembly steps.

[0072] The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily 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 invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features of the invention herein.

[0073] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A shaft replacement device for a lower drive vertical roll mill, characterized in that, The device is used to replace the connecting shaft (4) on the mill stand (5). The connecting shaft (4) is used to transmit the power of the power assembly to the roll shaft. The lower drive vertical roll mill connecting shaft replacement device includes a fixed support (1), a movable support (2), and a replacement cart (3). The fixed support (1) is located at the bottom of the mill stand (5) and close to the power assembly. At the end of the fixed support (1) away from the power assembly, the movable support (2) is detachably engaged with the fixed support (1), and the two are connected in a manner that allows for easy replacement of the connecting shaft (4) on the mill stand (5). After joining, a complete support component is formed. The support component is used to support the replacement vehicle (3). The replacement vehicle (3) can move back and forth on the movable support component (2) and the fixed support component (1) and is used to fix and transport the connecting shaft (4). The mill frame (5) is provided with a frame window (10) that runs vertically through the mill. The frame window (10) is vertically opposite to the movable support component (2). The replacement vehicle (3) with the connecting shaft (4) fixed thereon is used to pass through the frame window (10) under the action of external force. The replacement vehicle (3) includes a vehicle body (305), which is slidably engaged with the carrier and can be detached from the carrier. The replacement vehicle (3) also includes a third limiting guide wheel (301) and a third supporting guide wheel (302). The third limiting guide wheel (301) and the third supporting guide wheel (302) are respectively installed on both sides of the vehicle body (305). The third limiting guide wheel (301) and the third supporting guide wheel (302) can roll linearly along the guide rail of the carrier. Thus, when the replacement vehicle (3) carrying the connecting shaft (4) moves, whether it is from the fixed carrier (1) to the moving carrier (2) or from the moving carrier (2) to the fixed carrier (1), it moves in a straight line.

2. The shaft replacement device for a lower drive vertical roll mill according to claim 1, characterized in that, The replacement vehicle (3) includes a pressure ring (303) and a lifting ring (304). The lifting ring (304) is fixedly mounted 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), the two form a receiving space for accommodating the connecting shaft (4).

3. The shaft replacement device for a lower drive vertical roll mill according to claim 2, characterized in that, 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) and is used to slide to support the vehicle body (305). The first guide rail extends from the bottom of the rolling mill stand (5) to the position of the power component.

4. The shaft replacement device for a lower drive vertical roll mill according to claim 3, characterized in that, 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) and is used to slide to 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 shaft replacement device for a lower drive vertical roll mill according to claim 4, characterized in that, The third limiting guide wheel (301) and the third supporting guide wheel (302) are provided in multiple sets and are evenly distributed on the vehicle body (305).

6. The shaft replacement device for a lower drive vertical roll mill according to claim 5, characterized in that, 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 parallel to each other on the top sides 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).

7. The shaft replacement device for a lower drive vertical roll mill according to claim 6, characterized in that, The second guide rail includes a second limiting guide rail (201) and a second support guide rail (202). The second limiting guide rail (201) and the second support guide rail (202) are arranged parallel to each other on the top sides of the second frame (203). The second limiting guide rail (201) cooperates with the third limiting guide wheel (301), and the second support guide rail (202) cooperates with the third support 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 support guide rail (102) is engaged with the second support guide rail (202).

8. The shaft replacement device for a lower drive vertical roll mill according to claim 7, characterized in that, The third limiting guide wheel (301) is "V" shaped or inverted "V" shaped. Correspondingly, 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). The third supporting guide wheel (302) is a flat guide wheel. Correspondingly, 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.

9. The shaft replacement device for a lower drive vertical roll mill according to any one of claims 4-8, characterized in that, The movable support (2) and the fixed support (1) are detachably connected by 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).

Images