A quick-disassembly and assembly movable vertical mill frame and assembly method thereof

Abstract

The present invention discloses a movable vertical mill frame that can be quickly disassembled and assembled, and an assembly method thereof. The frame comprises a bracket, a reducer base, a bearing seat, a connecting bridge, and a motor transmission base. The bracket and the reducer base are connected as a whole to form a frame body. The frame body is an integrated structure. The bearing seat is an integrally cast structure. The bearing seat and the frame body are connected and fixed by flange bolting. The connecting bridge and the bearing seat are connected and fixed by flange bolting. The motor transmission base and the frame body are connected and fixed by flange bolting. The frame body, the bearing seat, the connecting bridge, and the motor transmission base are connected to form a frame as a whole. The frame as a whole is placed on multiple vibration isolators. The present invention shortens the equipment installation period, greatly saves the construction period and labor costs, and realizes the rapid disassembly and assembly of the vertical mill while ensuring the safety of the vertical mill equipment. It improves its mobility, improves the stability of the vertical mill operation, and reduces the amount of on-site concrete and the amount of civil engineering construction.

Description

Technical Field

[0001] The present invention relates to the technical field of vertical mill equipment, in particular to a quickly disassembled and movable vertical mill frame and an assembling method thereof. Background Art

[0002] Traditional vertical mills are designed with a fixed, "rooted" structure. The mill's frame and motor drive base are embedded in the concrete foundation. The mill's frame and base are welded together, and all other components of the frame, such as the bearing housing, brackets, and connecting bridges, are also welded together. This structure requires significant civil engineering and welding work, and is essentially non-removable. This means that from site selection, plant construction, operation, and final decommissioning, all equipment must operate in the same location, with no relocation options or equipment reuse. Construction cycles are lengthy, and installation is complex.

[0003] For projects that require quick disassembly and mobility, traditional vertical mills cannot meet the project's requirements for mobility. For example, the rapidly emerging small and medium-sized mobile grinding stations require that the entire plant equipment can be quickly disassembled and assembled.

[0004] The difficulty and key point in the assembly and disassembly of vertical mill equipment lies in the structural form of the mill frame. Therefore, how to achieve the rapid assembly and disassembly function of the vertical mill and improve its mobility under the premise of ensuring the safety of the vertical mill equipment is the key to the vertical mill structure design. Summary of the Invention

[0005] In order to solve the problems existing in the prior art, the present invention provides a movable vertical mill frame that can be quickly disassembled and assembled and an assembly method thereof. The vertical mill frame transforms the traditional fixed vertical mill frame structure into a new movable vertical mill frame structure, which can realize the rapid disassembly and assembly of the frame without welding.

[0006] The present invention is implemented as follows: a quick-disassembly and assembly movable vertical mill frame includes a bracket, a reducer base, a bearing seat, a connecting bridge and a motor transmission base, wherein the bearing seat is located above the bracket, the connecting bridge is located on both sides of the bearing seat, and the motor transmission base is located on one side of the frame body;

[0007] The bracket and the reducer base are connected as a whole to form a frame body, the frame body is an integrated structure, the bearing seat is an integral casting structure, the bearing seat and the frame body are connected and fixed by flange bolts, the connecting bridge and the bearing seat are connected and fixed by flange bolts, and the motor transmission base and the frame body are connected and fixed by flange bolts;

[0008] The frame body, the bearing seat, the connecting bridge and the motor transmission base are connected to form a frame as a whole, and the frame as a whole is placed on a plurality of vibration isolators.

[0009] Preferably, base supports are provided on both sides of the bottom of the frame body, the base supports are fixed to the frame body by flange bolting, and the base supports are located on the vibration isolator.

[0010] Preferably, the bottom of each of the vibration isolators is connected and fixed to the concrete foundation via expansion bolts.

[0011] Preferably, the bottom of the bearing seat is provided with a bearing seat connecting flange 1, and bearing seat connecting flanges 2 are provided on both sides of the top; the top of the frame body is provided with a frame body connecting flange 1, the two sides of the bottom are provided with a frame body connecting flange 2, and the middle of one side of the bottom is provided with a frame body connecting flange 3; one side of the connecting bridge is provided with a connecting bridge connecting flange, one side of the base support is provided with a base support connecting flange, and one side of the motor transmission base is provided with a motor transmission base connecting flange; the bearing seat connecting flange 1 is connected to the frame body connecting flange 1 by bolts, the bearing seat connecting flange 2 is connected to the connecting bridge connecting flange by bolts, the frame body connecting flange 2 is connected to the base support connecting flange by bolts, and the frame body connecting flange 3 is connected to the motor transmission base connecting flange by bolts.

[0012] Further preferably, positioning pin holes are respectively provided on the bearing seat connecting flange 1 and the frame body connecting flange 1, the bearing seat connecting flange 2 and the connecting bridge connecting flange, the frame body connecting flange 2 and the base support connecting flange, and the frame body connecting flange 3 and the motor transmission base connecting flange, and a positioning pin is inserted into each of the positioning pin holes.

[0013] A method for assembling a quick-disassembly and assembly movable vertical mill frame is based on the vertical mill frame, and the specific process is as follows:

[0014] After all components of the vertical mill frame are manufactured, they are pre-assembled in the factory. During the pre-assembly, the accuracy of all bolt connections must be ensured. After pre-assembly, locating pin holes are drilled on each connecting flange, locating pins are installed, and matching marks are made one by one. After the above work is completed, the vertical mill frame is disassembled and sent to the use site;

[0015] During on-site assembly, assemble according to the pre-made matching marks, install and position all the positioning pins according to the matching marks, and then install the connecting bolts to complete the overall assembly;

[0016] Place the vibration isolator in the designated position on the concrete foundation in advance, hoist the vertical mill frame onto the vibration isolator as a whole, perform leveling and alignment, and after adjustment, fix the vibration isolator to the concrete foundation with expansion bolts.

[0017] The advantages and positive effects of the present invention are:

[0018] 1. This invention transforms the traditional welded fixed vertical mill frame structure into a new, movable, bolted structure. This compact design facilitates assembly and disassembly, ensuring the safety of the mill while enabling rapid assembly and disassembly, improving its mobility. This invention is primarily applicable to mobile powder grinding mills and small and medium-sized vertical mills that require frequent site changes.

[0019] 2. This invention integrates the traditional bracket and reducer base into a single frame. Compared with traditional vertical mills, this greatly simplifies on-site installation procedures and reduces on-site welding workload by over 90%, achieving a virtually welding-free installation process. This shortens the equipment installation cycle, significantly saving construction time and labor costs. It also facilitates on-site installation and disassembly, making small and medium-sized vertical mills more portable. When disassembly is required, the equipment can be disassembled by simply removing the bolts, greatly increasing its mobility.

[0020] 3. The stress conditions during the operation of the vertical mill are relatively complex. Not only is the vertical vibration large, but it is also subject to horizontal torque. The present invention increases the anti-overturning ability of the frame body and improves the stability of the mill by adding base supports on both sides of the frame body.

[0021] 4. The present invention places the entire frame completely on the vibration isolator, and uses the vibration isolator to support the vertical mill. The vibration isolator can effectively absorb more than 50% of the impact dynamic load generated by the operation of the vertical mill, thereby improving the stability of the vertical mill operation; at the same time, it also reduces the amount of on-site concrete and the amount of civil construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A perspective view of a vertical mill frame provided in an embodiment of the present invention;

[0023] Figure 2 A three-dimensional diagram of a rack body provided in an embodiment of the present invention;

[0024] Figure 3 A three-dimensional diagram of a bearing seat provided in an embodiment of the present invention;

[0025] Figure 4 A perspective view of a connecting bridge provided by an embodiment of the present invention;

[0026] Figure 5A perspective view of a base support provided by an embodiment of the present invention;

[0027] Figure 6 A three-dimensional diagram of a motor drive base provided in an embodiment of the present invention;

[0028] Figure 7 A schematic structural diagram of a connection method between a vibration isolator and a concrete foundation provided in an embodiment of the present invention;

[0029] Figure 8 A schematic structural diagram of two connecting flanges connecting a bearing seat and a frame body provided in an embodiment of the present invention, in which two connecting flanges are pre-positioned by positioning pins.

[0030] In the figure: 1. Bearing seat; 11. Bearing seat connecting flange 1; 111. Stopper; 12. Bearing seat connecting flange 2; 2. Connecting bridge; 21. Connecting bridge connecting flange; 3. Frame body; 31. Frame body connecting flange 1; 32. Frame body connecting flange 2; 33. Frame body connecting flange 3; 4. Base support; 41. Base support connecting flange; 5. Motor drive base; 51. Motor drive base connecting flange; 6. Vibration isolator; 7. Expansion bolt; 8. Locating pin; 9. Concrete foundation. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They 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 direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0034] See also Figures 1 to 8 , an embodiment of the present invention provides a movable vertical mill frame that can be quickly disassembled and assembled, including a bracket, a reducer base, a bearing seat 1, a connecting bridge 2 and a motor transmission base 5, the bracket and the reducer base are connected as a whole to form a frame body 3, the frame body 3 is an integrated structure, shipped as a whole, and no welding is required on site; the bearing seat 1 is located above the frame body 3, the connecting bridge 2 is located on both sides of the bearing seat 1, and the motor transmission base 5 is located on one side of the frame body 3; the bearing seat 1 is an integral casting structure, which can extremely well suppress deformation and improve the overall installation accuracy, the bearing seat 1 and the frame body 3 are connected and fixed by flange bolting, the connecting bridge 2 and the bearing seat 1 are connected and fixed by flange bolting, and the motor transmission base 5 and the frame body 3 are connected and fixed by flange bolting; the use of flange bolting can reduce about 90% of the welding workload on site and achieve rapid disassembly and assembly. The motor transmission base 5 is connected to the frame body 3 by flange bolting, which is different from the traditional form of independent installation of the vertical mill motor base and the vertical mill frame. The structural form of the present invention can maintain the consistency of the deformation of the frame body 3 and the motor transmission base 5, effectively protecting the main motor and the main reducer.

[0035] Base supports 4 are provided on both sides of the bottom of the frame body 3 and are fixed to the frame body 3 via flange bolts. The vertical mill is subject to complex forces during operation, including significant vertical vibration and horizontal torque. Adding base supports 4 around the frame body 3 significantly improves its anti-overturning capability and enhances the mill's stability.

[0036] The frame body 3, bearing housing 1, connecting bridge 2, base support 4, and motor drive base 5 are connected to form an integral frame, which is then placed on multiple vibration isolators 6. The isolators 6 contain damping springs and damping fluid, and their suspended installation effectively absorbs over 50% of the impact dynamic loads generated during mill operation, significantly improving mill operational stability and reducing the amount of foundation concrete used.

[0037] The bottom of each of the vibration isolators 6 is connected and fixed to the concrete foundation 9 by expansion bolts 7 to ensure a firm connection.

[0038] The bearing seat 1 is provided with a bearing seat connecting flange 11 at the bottom and bearing seat connecting flanges 2 12 at both sides of the top. The frame body 3 is provided with a frame body connecting flange 1 31 at the top, frame body connecting flanges 2 32 at both sides of the bottom, and a frame body connecting flange 3 33 at the center of one side of the bottom. The connecting bridge 2 is provided with a connecting bridge connecting flange 21 on one side, the base support 4 is provided with a base support connecting flange 41 on one side, and the motor drive base 5 is provided with a motor drive base connecting flange 51 on one side. The bearing seat connecting flange 1 11 is bolted to the frame body connecting flange 1 31, the bearing seat connecting flange 2 12 is bolted to the connecting bridge connecting flange 21, the frame body connecting flange 2 32 is bolted to the base support connecting flange 41, and the frame body connecting flange 3 33 is bolted to the motor drive base connecting flange 51. The provision of these connecting flanges facilitates quick connection between the various components.

[0039] The bottom of the bearing seat connecting flange 11 is provided with a stop 111 that cooperates with the frame body connecting flange 31 to ensure that the bearing seat 1 and the frame body 3 are accurately positioned during installation, thereby ensuring installation accuracy; two bearing seat connecting flanges 12 are provided, and the two bearing seat connecting flanges 12 are also cast integrally with the bearing seat 1, one is located on the top surface of the top of the bearing seat 1, and the other is located on the side of the top of the bearing seat 1. The two bearing seat connecting flanges 12 are vertically arranged, and correspondingly, two connecting bridge connecting flanges 21 are provided, and the two connecting bridge connecting flanges 21 are vertically arranged, respectively cooperating with the two bearing seat connecting flanges 12 to ensure a stable connection.

[0040] Positioning pin holes are provided on the bearing seat connecting flange 11 and the frame body connecting flange 1 31, the bearing seat connecting flange 2 12 and the connecting bridge connecting flange 21, the frame body connecting flange 2 32 and the base support connecting flange 41, and the frame body connecting flange 3 33 and the motor drive base connecting flange 51. Positioning pins 8 are inserted into each of these positioning pin holes. Because the vertical mill frame is primarily bolted together during installation, high assembly precision is required between the various components. This requires that the connecting flanges between the various components be pre-assembled and positioned using positioning pins 8 during production.

[0041] The specific implementation process of the installation and disassembly of the present invention is as follows:

[0042] Installation: After the bearing seat 1, connecting bridge 2, frame body 3, base support 4 and motor drive base 5 are manufactured, they are pre-assembled in the factory. The accuracy of all bolt connections must be guaranteed in the pre-assembly. After pre-assembly, locating pin holes are drilled on each connecting flange, locating pins 8 are installed, and matching marks are made one by one. After the above work is completed, the assembled vertical mill frame is disassembled and sent to the site;

[0043] During on-site assembly, assemble according to the pre-made matching marks, install and position all the positioning pins 8 according to the matching marks, and then install the connecting bolts;

[0044] Place the vibration isolator 6 in the designated position on the concrete foundation in advance. After the vertical mill frame is assembled, hoist it onto the vibration isolator 6 as a whole and perform leveling and alignment. After adjustment, fix the vibration isolator 6 to the concrete foundation with expansion bolts 7.

[0045] Disassembly: To disassemble the equipment, simply remove the connecting bolts at each connection point. The vibration isolator 6 must be disassembled after the vertical mill frame is completely disassembled. If the expansion bolts 7 are damaged or deformed during disassembly, replace them with the same specifications.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein, and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A quick-disassembly and removable vertical mill frame, comprising a bracket, a reducer base, a bearing seat, a connecting bridge, and a motor drive base, wherein the bearing seat is located above the bracket, the connecting bridge is located on both sides of the bearing seat, and the motor drive base is located on one side of the frame body; characterized in that: The bracket and the reducer base are connected as a whole to form a frame body, the frame body is an integrated structure, the bearing seat is an integral casting structure, the bearing seat and the frame body are connected and fixed by flange bolts, the connecting bridge and the bearing seat are connected and fixed by flange bolts, and the motor transmission base and the frame body are connected and fixed by flange bolts; The frame body, the bearing seat, the connecting bridge and the motor transmission base are connected to form a frame as a whole, and the frame as a whole is placed on a plurality of vibration isolators; Base supports are provided on both sides of the bottom of the frame body, the base supports are connected and fixed to the frame body by flange bolts, and the base supports are located on the vibration isolator; A bearing seat connecting flange 1 is provided at the bottom of the bearing seat, and bearing seat connecting flanges 2 are provided on both sides of the top; a frame body connecting flange 1 is provided at the top of the frame body, a frame body connecting flange 2 is provided on both sides of the bottom, and a frame body connecting flange 3 is provided in the middle of one side of the bottom; a connecting bridge connecting flange is provided on one side of the connecting bridge, a base support connecting flange is provided on one side of the base support, and a motor transmission base connecting flange is provided on one side of the motor transmission base; the bearing seat connecting flange 1 is connected to the frame body connecting flange 1 by bolts, the bearing seat connecting flange 2 is connected to the connecting bridge connecting flange by bolts, the frame body connecting flange 2 is connected to the base support connecting flange by bolts, and the frame body connecting flange 3 is connected to the motor transmission base connecting flange by bolts.

2. The quick-disassembly movable vertical mill frame according to claim 1, characterized in that: The bottom of each vibration isolator is connected and fixed to the concrete foundation through expansion bolts.

3. The quick-disassembly movable vertical mill frame according to claim 1, characterized in that: Positioning pin holes are respectively provided on the bearing seat connecting flange 1 and the frame body connecting flange 1, the bearing seat connecting flange 2 and the connecting bridge connecting flange, the frame body connecting flange 2 and the base support connecting flange, and the frame body connecting flange 3 and the motor transmission base connecting flange, and a positioning pin is inserted into each of the positioning pin holes.

4. A method for assembling a quick-disassembly movable vertical mill frame, characterized in that: The assembly method is based on the vertical mill frame according to any one of claims 1 to 3, and the specific process is as follows: After all components of the vertical mill frame are manufactured, they are pre-assembled in the factory. During the pre-assembly, the accuracy of all bolt connections must be ensured. After pre-assembly, locating pin holes are drilled on each connecting flange, locating pins are installed, and matching marks are made one by one. After the above work is completed, the vertical mill frame is disassembled and sent to the use site; During on-site assembly, assemble according to the pre-made matching marks, install and position all the positioning pins according to the matching marks, and then install the connecting bolts to complete the overall assembly; Place the vibration isolator in the designated position on the concrete foundation in advance, hoist the vertical mill frame onto the vibration isolator as a whole, perform leveling and alignment, and after adjustment, fix the vibration isolator to the concrete foundation with expansion bolts.

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