A device for mounting and dismounting a screw mechanism of a vertical mill

Abstract

The utility model provides a kind of vertical mill screw mechanism's installation and disassembly device, including mill, slide rail mechanism, moving mechanism and lifting mechanism, mill includes shell and rotating shaft;Slide rail mechanism is detachably connected in mill, it is from outside and inside through shell and at least extends to rotating shaft below;Moving mechanism is movably connected in slide rail mechanism, for loading screw mechanism and driving screw mechanism to move, lifting mechanism is set in rotating shaft, for lifting or lowering screw mechanism.The utility model realizes that screw mechanism moves between the inside and outside of mill, more convenient, efficient, reduce the labor intensity of worker, improve the security of operation, avoid that screw mechanism occurs knock and damage in moving process;It improves installation and disassembly efficiency, reduces construction cost.

Description

Technical Field

[0001] This utility model belongs to the field of metallurgical equipment installation technology, and in particular relates to a device for installing and dismantling a vertical mill spiral mechanism. Background Technology

[0002] Large vertical mixing mills are commonly used in industries such as mining, cement, and metallurgy. They are equipped with a screw mechanism for grinding operations. This screw mechanism is long, heavy, and vertically installed inside the mill casing. During installation, it needs to be transported vertically to below the drive shaft inside the mill casing. Because the screw mechanism's liners need to be replaced periodically during production, it also needs to be periodically removed and transported vertically outside the mill casing. Current technology typically uses overhead cranes or truck cranes to lift the screw mechanism to the mill casing's access door. Multiple lifting points are set on the drive shaft and its supports inside the mill casing, and multiple heavy-duty chain hoists are used to drag the screw mechanism into the mill casing. Disassembly is done using the same method. This installation and disassembly method is not only inefficient but also poses significant safety hazards, easily causing injury and damage to personnel and equipment. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a device for installing and dismantling the screw mechanism of a mill, which can complete the installation and dismantling of the screw mechanism more conveniently, efficiently and safely.

[0004] The technical solution adopted by this utility model is: a device for installing and dismantling a vertical mill screw mechanism, including a mill, the mill including a housing and a rotating shaft; and further including:

[0005] A slide rail mechanism, detachably connected to the mill, passes through the housing from the outside in and extends at least below the rotating shaft;

[0006] A moving mechanism, movably connected to the slide rail mechanism, is used to load the screw mechanism and drive the screw mechanism to move;

[0007] A lifting mechanism is provided on the rotating shaft and is used to lift or lower the spiral mechanism.

[0008] Furthermore, the slide rail mechanism includes a track beam, an outer support frame, and an inner connecting frame;

[0009] The track beams are arranged opposite each other and pass through the access door of the housing;

[0010] The outer support frame is detachably mounted on the housing and located outside the inspection door to support the track beam;

[0011] The inner connecting frame is located at one end of the track beam inside the housing and is detachably connected to the fixing member inside the mill.

[0012] Furthermore, the moving mechanism includes a transport trolley, a drive assembly, and a guide assembly; the transport trolley is rotatably disposed above the track beam; the drive assembly is disposed at the end of the track beam located outside the housing, and the guide assembly is disposed at the other end of the track beam; the drive assembly includes a drive member and a traction rope connected to the drive member, and during installation operations, the free end of the traction rope passes around the guide assembly and is connected to the transport trolley.

[0013] Furthermore, the guiding assembly includes a guide wheel, and the centerline of the guide wheel, the drive unit, and the transport trolley are aligned.

[0014] Furthermore, the transport trolley includes longitudinally and transversely connected longitudinal beams, transverse beams, and wheels connected to the longitudinal beams; the spacing between the longitudinal beams is less than the flange diameter of the screw mechanism and greater than the main body diameter of the screw mechanism; at least one of the transverse beams is detachably connected to the longitudinal beams.

[0015] Furthermore, the inner connecting frame includes an upper clamping plate and a lower clamping plate arranged opposite to each other. The distance between the upper clamping plate and the lower clamping plate is adapted to the thickness of the fixing member, and corresponding connecting holes are provided. The fixing member is fastened by a connecting member passing through the connecting holes.

[0016] Furthermore, the guide assembly also includes a guide bracket, the guide wheel is rotatably connected to the guide bracket, and the guide bracket is detachably disposed between the track beams.

[0017] Furthermore, the external support frame includes a top beam, a hanger, and a column; the top beam is connected to the inspection door by fasteners; the column is supported at both ends of the top beam, the hanger is connected to the column, and is provided with a support plate for supporting the track beam.

[0018] Furthermore, the lifting mechanism reuses the maintenance device of the rotating shaft flange.

[0019] The advantages and positive effects of this utility model are:

[0020] (1) By setting up a moving mechanism and a slide rail mechanism, the screw mechanism can move between the inside and outside of the mill, which is more convenient and efficient, reduces the labor intensity of workers, improves the safety of operation, and avoids collisions and damage to the screw mechanism during movement;

[0021] (2) The original lifting mechanism of the mill is used to lift or lower the screw mechanism, which makes it easier to align the shaft and the screw mechanism, reduces the operation time and workload of setting up an additional lifting mechanism, further improves the installation and dismantling efficiency of the screw mechanism, and reduces construction costs. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a specific embodiment of the present invention;

[0023] Figure 2 This is a front view of the slide rail mechanism and the moving mechanism according to a specific embodiment of this utility model;

[0024] Figure 3 This is a top view of the slide rail mechanism and the moving mechanism according to a specific embodiment of this utility model;

[0025] Figure 4 This is a schematic diagram of the structure of a transport trolley according to a specific embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the installation process of the transport trolley track beam in a specific embodiment of this utility model.

[0027] In the picture:

[0028] 1. Counterweight; 2. External support frame; 3. Track beam; 4. Transport trolley; 41. Crossbeam; 42. Longitudinal beam; 43. Wheel; 5. Internal connecting frame; 51. Upper clamping plate; 52. Lower clamping plate; 6. Guide wheel; 7. Mounting seat; 8. Housing; 9. Drive component; 10. Screw mechanism; 11. Rotating shaft; 12. Crane; 13. Fixing component. Detailed Implementation

[0029] The embodiments of this utility model will now be described with reference to the accompanying drawings.

[0030] This utility model provides an installation and dismantling device for the screw mechanism of a vertical mill, used for installing the screw mechanism of a vertical mill. The mill includes a housing and a rotating shaft. The housing has a maintenance door for communication with the outside, the bottom end of the rotating shaft has a connecting flange, and the top end of the screw mechanism has a matching connecting flange, allowing for alignment and connection, and enabling the screw mechanism to be installed vertically within the housing. This application fully utilizes the existing structure of the mill, and through the setting of a slide rail mechanism and a moving mechanism, efficiently and conveniently installs the screw mechanism from the outside of the housing onto the rotating shaft or removes it from the rotating shaft and moves it to the outside for maintenance, improving the installation and dismantling efficiency and safety of the screw mechanism installation and dismantling operations.

[0031] like Figure 1As shown in the embodiment of this application, an installation and removal device for a vertical mill screw mechanism is proposed, which further includes a slide rail mechanism, a moving mechanism, and a lifting mechanism: wherein, the slide rail mechanism is detachably connected to the mill, passes through the housing 8 from the outside to the inside, and extends at least below the rotating shaft 11; the moving mechanism is movably connected to the slide rail mechanism, and is used to load the screw mechanism 10 and drive the screw mechanism 10 to move, the moving mechanism can move along the slide rail mechanism, and drive the screw mechanism 10 to move between the inner and outer sides of the housing 8; the lifting mechanism is disposed on the rotating shaft 11, and is used to lift or lower the screw mechanism 10; through the above technical solution, when it is necessary to install the screw mechanism 10, the screw mechanism can be... The screw mechanism 10 is installed on the moving mechanism. The screw mechanism 10 moves from the outside to the inside of the rotating shaft 11 through the moving mechanism, and then is lifted by the lifting mechanism and aligned with the rotating shaft 11. When it is necessary to remove the screw mechanism 10 from the rotating shaft 11, the screw mechanism 10 is lowered to the moving mechanism through the lifting mechanism, and then moved from the inside to the outside of the housing 8 through the moving mechanism. This realizes the convenient and efficient installation and removal of the screw mechanism 10. Compared with the existing technology of setting multiple chain hoists inside the housing 8 to drag the screw mechanism 10, this method avoids the screw mechanism 10 from being bumped and damaged during the movement, improves the safety of operation, and reduces the labor intensity of workers.

[0032] Furthermore, in the embodiments of this application, such as Figure 2 , Figure 3 As shown, the slide rail mechanism includes a track beam 3, an outer support frame 2, and an inner connecting frame 5. The track beam 3 is positioned opposite each other and passes through the inspection door of the housing 8. The outer support frame 2 is detachably connected to the housing 8 and located outside the inspection door to support the track beam 3. The inner connecting frame 5 is located on the portion of the track beam 3 inside the housing 8 and is detachably connected to the fixing member 13 inside the mill. The track beam 3 has a predetermined length. The outer support frame 2 and the inner connecting frame 5 are respectively positioned at different locations along the length of the track beam 3, forming two support points. The outer support frame 2 is located outside the housing 8, providing stable support for the track beam 3. The inner connecting frame 5 is located on the portion of the track beam 3 inside the housing 8 and is connected to the fixing member 13 inside the mill. The load of the track beam 3 can be transferred downwards to the ground or along its length to the fixing member 13 inside the mill, thus constraining the track beam 3 in at least two directions and making the overall structure more stable.

[0033] The aforementioned inner connecting frame 5 can be set at the end of the track beam 3 or at other locations as needed. Both can cooperate with the outer support frame 2 to form a stable support structure. In a specific embodiment, the track beam 3 extends to the bottom of the rotating shaft 11, the inner connecting frame 5 is set at the end of the track beam 3, and the fixing member 13 reuses the mounting bracket of the rotating shaft 11, which makes it easier to connect with the inner connecting frame 5.

[0034] The aforementioned outer support frame 2 can be two independent ones, each supporting one track beam 3; or it can be set as one, simultaneously supporting two track beams 3. The outer support frame 2 is detachably connected to the housing 8, so that the housing 8 forms lateral support for the outer support frame 2, which can prevent the outer support frame 2 from shifting or overturning, and further improve the stability of the slide rail mechanism.

[0035] Preferably, the two track beams 3 are connected as one unit by a connecting beam, so that the track beams 3, the outer support frame 2, the inner support frame and the mill are connected to form an integral structure, which further improves the stability of the slide rail mechanism.

[0036] Furthermore, in the embodiments of this application, such as Figure 4 As shown, the moving mechanism includes a transport trolley 4, a drive assembly, and a guide assembly; the transport trolley 4 is rotatably mounted above the track beam 3; the drive assembly is located at the end of the track beam 3 located outside the housing 8, and the guide assembly is located at the other end of the track beam 3; the drive assembly includes a drive member 9 and a traction rope connected to the drive member 9. During installation, the free end of the traction rope passes around the guide assembly and is connected to the transport trolley 4. The transport trolley 4 carries the screw mechanism 10. The aforementioned drive assembly and guide assembly are respectively located at both ends of the track beam 3. Through their cooperation, the transport trolley 4 can be driven to move along the track beam 3. Specifically, the transport trolley 4 is located between the drive assembly and the guide assembly. During installation, the traction rope is led out from the drive component 9, extends along the direction of the track beam 3, passes over the transport trolley 4 from above, circles the guide assembly, turns to the bottom of the guide assembly, and then folds back to connect to the transport trolley 4. Through the action of the drive component 9, the traction rope shortens, causing the transport trolley 4 to move towards the guide assembly, thereby driving the screw mechanism 10 to move from the outside to the inside to below the rotating shaft 11, thus completing the installation of the screw mechanism 10. The drive assembly is located on the outside of the housing 8, so that workers do not need to enter the narrow space inside the housing 8 to operate, thus enabling the movement of the transport trolley 4 more conveniently and quickly.

[0037] Preferably, in the above embodiment, the free end of the traction rope is connected to the end of the transport trolley 4 near the guide assembly, and the installation heights of the transport trolley 4, the drive unit 9 and the guide assembly are adapted to each other, so that the traction rope will not obstruct the movement of the transport trolley 4.

[0038] The aforementioned drive unit 9 can be in the form of a manual winch, an electric reel, or a chain hoist, and there are no restrictions on its use.

[0039] Furthermore, in the above embodiment, the guiding component includes a guide wheel 6, the center line of the guide wheel 6, the driving component 9 and the transport trolley 4 are aligned, and the center line is parallel to the moving direction of the transport trolley 4. The connection part of the traction rope and the transport trolley 4 is also located at the center. Through this arrangement, the traction force on the transport trolley 4 is the same as its moving direction, ensuring the linear movement of the transport trolley 4.

[0040] Preferably, the drive assembly further includes a mounting base 7, which is detachably disposed in the middle of the connecting beam of the track beam 3 located outside the housing 8, so as to align the drive member 9 with the centerline of the transport trolley 4 and the guide wheel 6, while adapting the height of the output end of the drive member 9 to the transport trolley 4, so that the traction rope can pass through the gap between the transport trolley 4 and the flange of the screw mechanism 10 and extend to the guide wheel 6.

[0041] Preferably, the track beam 3 is provided with a limiting mechanism, which is arranged on both sides of the moving direction of the transport trolley 4, and can form a lateral limiting on the transport trolley 4 to prevent the transport trolley 4 from deviating to the side during the movement.

[0042] Further, in this embodiment, the transport trolley 4 includes longitudinal beams 42 and transverse beams 41 connected longitudinally and transversely, and wheels 43 connected to the longitudinal beams 42; the spacing between the longitudinal beams 42 is less than the flange diameter of the screw mechanism 10 and greater than the main body diameter of the screw mechanism 10; at least one transverse beam 41 is detachably connected to the longitudinal beams. The longitudinal beams 42 and transverse beams 41 have good rigidity, enabling the transport trolley 4 to have sufficient load-bearing capacity. For example, the longitudinal beams 42 are made of channel steel, and the transverse beams 41 are made of H-beams. There are two longitudinal beams 42 and two transverse beams 41. The longitudinal beams 42 are parallel to the track beam 3, and the transverse beams 41 are vertically connected to the opposite ends of the two longitudinal beams 42; there is a set spacing between the two longitudinal beams 42, which allows the main body of the screw mechanism 10 to pass through, so that the flange of the screw mechanism 10 is engaged with the upper end face of the longitudinal beam 42. At this time, the screw mechanism 10 is stably engaged with the transport trolley 4 in a vertical posture; setting at least one transverse beam 41 to be detachable facilitates the placement of the screw mechanism 10. When placed on the transport trolley 4, one crossbeam 41 is removed, creating an opening between the longitudinal beam 42 and the crossbeam 41. The screw mechanism 10 is then inserted through the opening using a hoisting mechanism, allowing the flange of the screw mechanism 10 to rest on the longitudinal beam 42. The longitudinal beam 42 and the crossbeam 41 can also be detachably connected to facilitate the assembly of the transport trolley 4. For example, the longitudinal beam 42 and the crossbeam 41 are connected by high-strength bolts to form a frame structure. The number of wheels 43 is at least four, symmetrically arranged and connected to the longitudinal beam 42. The distance between the outer edges of two wheels 43 is adapted to the distance between two track beams 3. Preferably, the distance between the wheels 43 is set according to the distance between the limiting mechanisms on the track beams 3.

[0043] In a specific embodiment of this application, the fixing member 13 is an existing structure on the mill. Specifically, the fixing member 13 is a horizontally arranged steel plate of the shaft 11 support. The inner connecting frame 5 includes an upper clamping plate 51 and a lower clamping plate 52 arranged opposite to each other. The distance between the upper clamping plate 51 and the lower clamping plate 52 is adapted to the thickness of the fixing member 13. The upper clamping plate 51 and the lower clamping plate 52 are provided with corresponding connecting holes. The fixing member 13 is fastened by a connector passing through the connecting holes. The above technical solution enables the detachable connection between the inner connecting frame 5 and the fixing member 13, which facilitates the quick connection and fixation of the track beam 3 on the mill when installing or removing the screw mechanism 10, giving the track beam 3 good stability. After installation, the track beam 3 can be quickly removed, making the operation simple.

[0044] In the above embodiment, there is a height difference between the track beam 3 and the fixing member 13. The inner support frame also includes a connecting seat, which is fixed to one end of the track beam 3 and has an appropriate height. One end of the upper clamping plate 51 and the lower clamping plate 52 is connected to the connecting seat. The opening height between the upper clamping plate 51 and the lower clamping plate 52 is adapted to the fixing member 13 and can be sleeved on the outside of the fixing member 13 through the opening. A connecting member is used to pass through the connecting hole, and a fastening nut that is threadedly connected to the connecting member is provided on the outside of the upper clamping plate 51 and the lower clamping plate 52. By tightening the connecting member, the fixing member 13 can be fastened between the upper clamping plate 51 and the lower clamping plate 52. Preferably, there are multiple connecting holes and connecting members.

[0045] Furthermore, to facilitate alignment of the center of the guide assembly with the centerline of the transport trolley 4, the guide assembly also includes a guide bracket, with the guide wheel 6 rotatably connected to the guide bracket. The guide bracket is detachably disposed between the track beams 3. For example, the guide bracket is a rod-shaped structure, with the guide wheel 6 rotatably connected to the middle of the guide bracket. Both ends of the guide bracket pass through mounting holes on the two track beams 3 and are fixed to the track beams 3 by fasteners. Preferably, the mounting holes are elliptical to facilitate fine-tuning of the guide bracket's position, ensuring that the height and mounting position of the guide wheel 6 are adapted to the transport trolley 4 and the drive assembly.

[0046] Furthermore, in this embodiment, the outer support frame 2 includes a top beam 41, a hanger, and a column; the top beam 41 is connected to the inspection door by fasteners; the column is supported at both ends of the top beam 41, the hanger is connected to the column, and a support plate for supporting the track beam 3 is provided.

[0047] The bottom of the aforementioned column is set on the mill foundation, and the two ends of the top beam 41 are connected to the top of the column and connected to the mill's maintenance door by fasteners, so that the outer support frame 2 is detachably connected to the mill. In some other embodiments of this application, the column can also be detachably connected to the maintenance door, or the top beam 41 can be detachably connected to other parts of the mill's outer shell, both of which can form a fixed support function for the outer support frame 2.

[0048] The aforementioned columns are respectively set on both sides of the two track beams 3, and the top crossbeam 41 spans above the track beams 3; the hanger is connected to the middle of the column and is provided with a horizontal support plate, so that the track beams 3 can be placed on the support plate to form a stable support for the track beams 3.

[0049] Furthermore, in this embodiment, the lifting mechanism reuses the maintenance device at the flange of the rotating shaft 11. This maintenance device typically uses a hydraulic cylinder, which is an existing structure of the mill, and is installed on the flange of the rotating shaft 11 to align and connect the flange of the rotating shaft 11 and the flange of the screw mechanism 10. Specifically, the two flanges have corresponding mating holes, and the bottom end of the telescopic rod of the hydraulic cylinder is connected to a screw. Through the action of the hydraulic cylinder, the screw is raised or lowered to pass through or disengage from the mating hole. In this application, the maintenance device is reused as a lifting mechanism. After the screw mechanism 10 is moved to the bottom of the rotating shaft 11 by the transport trolley 4, and the flange of the screw mechanism 10 is aligned with the flange of the rotating shaft 11, a lifting device is connected to the telescopic rod of the hydraulic cylinder and connected to the flange of the screw mechanism 10. Through the action of the hydraulic cylinder, the screw mechanism 10 is lifted to the position where the two flanges are in contact, and then the two flanges are connected by the screw, thus completing the connection between the screw mechanism 10 and the rotating shaft 11. This reduces the operation time and workload of setting up additional lifting mechanisms, further improves the installation and dismantling efficiency of the spiral mechanism 10, and reduces construction costs.

[0050] This application also proposes a method for installing and dismantling a vertical mill screw mechanism, using the aforementioned installation and dismantling device for the vertical mill screw mechanism, including the following steps:

[0051] S1. Install the outer support frame 2 and connect the outer support frame 2 to the maintenance door of the mill;

[0052] The outer support frame 2 includes a top crossbeam 41, a hanger, and a column. After assembly, it is hoisted to the set position. Then, the top crossbeam 41 is connected to the maintenance door of the mill with bolts. The verticality of the outer support frame 2 and the horizontality of the support plate are checked. Shims are placed between the bottom of the column and the mill foundation to ensure that the support is in a stable state capable of bearing the load.

[0053] S2. Hoist the track beam 3 onto the outer support frame 2 and connect one end of the track beam 3 to the fixing part 13 inside the mill.

[0054] The two track beams 3 can be hoisted into place separately using the existing overhead crane 12 or other hoisting equipment, such as... Figure 5 As shown, during the hoisting process, the hoisting point is set at one end of the track beam 3 to be installed on the outside of the housing 8. To ensure the horizontal posture of the track beam 3, a counterweight 1 is set at the end of the track beam 3. The other end of the track beam 3 is hoisted into the inside of the housing 8, so that the upper clamping plate 51 and the lower clamping plate 52 of the inner connecting frame 5 are fitted onto the fixing member 13. The connecting member is inserted into the connecting hole for initial locking. Then, the horizontality of the track beam 3 is adjusted, and the gap between the upper clamping plate 51, the lower clamping plate 52 and the fixing member 13 is filled with shims. Then, the fixing member 13 is fastened and fixed with the connecting member to complete the connection between the track beam 3 and the mill.

[0055] S3. Install the transport trolley 4 onto the track beam 3, and install the guide assembly between the track beams 3;

[0056] Use a crane 12 or other lifting equipment to lift the transport trolley 4 onto the track beam 3, ensuring that the transport trolley 4 is compatible with the limiting mechanism on the track beam 3, and ensuring that the transport trolley 4 travels in a straight line; when installing the guide assembly, the center of the guide wheel 6 should be aligned with the centerline of the transport trolley 4.

[0057] S4, the hoisting screw mechanism 10 is placed on the transport trolley 4;

[0058] Remove one crossbeam 41 of the transport trolley 4, lift the screw mechanism 10 using the overhead crane 12 or hoisting equipment, control the height of the screw mechanism 10 so that its flange is slightly higher than the top surface of the longitudinal beam 42 of the transport trolley 4, pass the screw mechanism 10 through the opening between the two longitudinal beams 42, control the screw mechanism 10 to slowly descend so that its flange engages with the top surface of the longitudinal beam 42, and then reinstall the removed crossbeam 41 in its original position; in another embodiment of this application, the crossbeam 41 can also be reinstalled in its original position before the screw mechanism 10 descends.

[0059] S5. Install the drive assembly and connect the drive assembly's traction rope to the transport trolley 4 after it passes over the guide wheel 6 of the guide assembly.

[0060] The drive assembly is installed on the connecting beam away from the guide assembly, so that the drive end of the drive component 9, the guide wheel 6 and the center line of the transport trolley 4 are aligned, and the height of the drive component 9 and the guide wheel 6 is adapted to the height of the transport trolley 4. The traction rope connected to the drive component 9 passes through the gap between the transport trolley 4 and the flange of the screw mechanism 10 from above, passes around the guide wheel 6 and is then connected to the end of the transport trolley 4 near the guide wheel 6. Preferably, the crossbeam 41 of the transport trolley 4 is provided with a lifting lug, and the traction rope is connected to the lifting lug.

[0061] S6. Run the drive unit 9 to move the transport trolley 4 directly below the rotating shaft 11;

[0062] Driven by the action of the drive unit 9, the transport trolley 4 slowly moves to directly below the rotating shaft 11, and the flanges of the rotating shaft 11 and the screw mechanism 10 are aligned vertically.

[0063] S7. Lift the spiral mechanism 10 by means of a lifting mechanism;

[0064] After connecting the lifting mechanism to the screw mechanism 10 via the lifting device, operate the lifting mechanism to slowly raise the screw mechanism 10, and then align and connect the rotating shaft 11 and the flange of the screw mechanism 10.

[0065] S8. Remove the transport trolley 4 and dismantle the moving mechanism and slide rail mechanism.

[0066] When the screw mechanism 10 needs to be removed, the slide rail mechanism and the moving mechanism are reinstalled, so that the transport trolley 4 is moved directly below the rotating shaft 11. The screw mechanism 10 is lowered onto the screw trolley by the lifting mechanism, and the transport trolley 4 is moved to the outside of the mill by the driving component 9.

[0067] In one specific embodiment, the screw mechanism 10 needs to be inspected. The inspection work requires disassembling the screw mechanism 10 and moving it to the outside of the mill. After moving the transport trolley 4 to directly below the rotating shaft 11 using the methods in steps S1-S3, S5 and S6, the screw mechanism 10 is lowered by the lifting mechanism so that the flange of the screw mechanism 10 is engaged with the transport trolley 4. Then the traction rope is reconnected so that the two ends of the traction rope are connected to the output end of the drive component 9 and the end of the transport trolley 4 near the drive component 9, respectively. Through the action of the drive component 9, the transport trolley 4 drives the screw mechanism 10 to slowly move to the outside of the housing 8, thus completing the disassembly of the screw mechanism 10.

[0068] The advantages and positive effects of this utility model are:

[0069] (1) By setting up a moving mechanism and a slide rail mechanism, the screw mechanism can move between the inside and outside of the mill, which is more convenient and efficient, reduces the labor intensity of workers, improves the safety of operation, and avoids collisions and damage to the screw mechanism during movement;

[0070] (2) The original lifting mechanism of the mill is used to lift or lower the screw mechanism, which makes it easier to align the shaft and the screw mechanism, reduces the operation time and workload of setting up an additional lifting mechanism, further improves the installation and dismantling efficiency of the screw mechanism, and reduces construction costs.

[0071] The embodiments of this utility model have been described in detail above, but the content described is only a preferred embodiment of this utility model and should not be considered as limiting the scope of implementation of this utility model. All equivalent changes and improvements made in accordance with the claims of this utility model should still fall within the patent coverage of this utility model.

Claims

1. A device for installing and dismantling a spiral mechanism of a vertical mill, characterized in that: The mill includes a housing and a rotating shaft; it also includes: A slide rail mechanism, detachably connected to the mill, passes through the housing from the outside in and extends at least below the rotating shaft; A moving mechanism, movably connected to the slide rail mechanism, is used to load the screw mechanism and drive the screw mechanism to move; A lifting mechanism is provided on the rotating shaft and is used to lift or lower the spiral mechanism.

2. The installation and removal device for the vertical mill screw mechanism according to claim 1, characterized in that: The slide rail mechanism includes a track beam, an outer support frame, and an inner connecting frame; The track beams are arranged opposite each other and pass through the access door of the housing; The outer support frame is detachably mounted on the housing and located outside the inspection door to support the track beam; The inner connecting frame is located at one end of the track beam inside the housing and is detachably connected to the fixing member inside the mill.

3. The installation and removal device for the vertical mill screw mechanism according to claim 2, characterized in that: The moving mechanism includes a transport trolley, a drive assembly, and a guide assembly; the transport trolley is rotatably mounted above the track beam; the drive assembly is located at the end of the track beam located outside the housing, and the guide assembly is located at the other end of the track beam; the drive assembly includes a drive component and a traction rope connected to the drive component, and during installation, the free end of the traction rope passes around the guide assembly and is connected to the transport trolley.

4. The installation and removal device for the vertical mill screw mechanism according to claim 3, characterized in that: The guiding assembly includes a guide wheel, and the centerline of the guide wheel, the drive unit, and the transport trolley are aligned.

5. The device for installing and removing the spiral mechanism of a vertical mill according to claim 3 or 4, characterized in that: The transport trolley includes longitudinal beams, transverse beams, and wheels connected to the longitudinal beams; the spacing between the longitudinal beams is less than the flange diameter of the screw mechanism and greater than the main body diameter of the screw mechanism; at least one of the transverse beams is detachably connected to the longitudinal beams.

6. The installation and removal device for the vertical mill screw mechanism according to any one of claims 2-4, characterized in that: The inner connecting frame includes an upper clamping plate and a lower clamping plate arranged opposite to each other. The distance between the upper clamping plate and the lower clamping plate is adapted to the thickness of the fixing member, and corresponding connecting holes are provided. The fixing member is fastened by a connecting member passing through the connecting holes.

7. The installation and removal device for the vertical mill screw mechanism according to claim 4, characterized in that: The guiding assembly further includes a guide bracket, the guide wheel is rotatably connected to the guide bracket, and the guide bracket is detachably disposed between the track beams.

8. The installation and removal device for the vertical mill screw mechanism according to claim 2, characterized in that: The external support frame includes a top beam, a hanger, and a column; the top beam is connected to the inspection door by fasteners; the column is supported at both ends of the top beam, the hanger is connected to the column, and is provided with a support plate for supporting the track beam.

9. The installation and removal device for the vertical mill screw mechanism according to claim 1, characterized in that: The lifting mechanism reuses the maintenance device of the rotating shaft flange.

Images