Maintenance tool for parts of coal mill

Abstract

The utility model discloses an overhauling tool for parts of a coal mill, which belongs to the field of machinery and comprises a square bottom plate and a fixing frame parallel to the bottom plate, fixing columns are fixedly arranged at four corners of the upper surface of the bottom plate, and the other ends of the fixing columns are fixedly connected with long edges of the fixing frame. Supporting pieces are detachably arranged in the middles of the fixing columns on the same long side of the bottom plate, hoisting devices are slidably arranged on the upper end faces of the fixing frames, and adjusting pieces are arranged at the bottoms of the hoisting devices. The supporting piece comprises an adjusting rod and a supporting plate, a plurality of adjusting holes are correspondingly formed in the four fixing columns, the adjusting rod is embedded in the adjusting holes in the fixing columns opposite to the wide edge of the bottom plate in a penetrating mode, and the tail end of the adjusting rod is detachably sleeved with the supporting plate. The support has the advantages that the supporting plate is arranged in the middle of the support body, the driving motor and the winding reel are arranged on the top to be matched with the adjusting screw, parts to be overhauled are suspended through the lifting hook and then erected at the upper end of the supporting plate for overhauling, and the support is simple in structure and convenient to use.

Description

Technical Field

[0001] This utility model belongs to the field of machinery, specifically relating to a maintenance fixture for coal mill parts. Background Technology

[0002] A coal mill is a machine that crushes and grinds coal into pulverized coal; it is an important auxiliary equipment for pulverized coal boilers. In the operating units, medium-speed coal mill reducers frequently experience problems such as bearing damage, input shaft breakage, broken bevel gears, mirror wear, and high thrust bearing temperatures. This forces the coal mill to be shut down frequently for disassembly and repair of the reducer, posing a significant threat to the safe operation of the unit. Due to the complex internal structure of the medium-speed coal mill reducer, it is often disassembled for maintenance. However, the lack of suitable maintenance support after disassembly makes maintenance time-consuming and labor-intensive.

[0003] Maintenance supports are mostly used to help workers reach designated maintenance points for overall mechanical maintenance. However, there are no corresponding supports to suspend and raise disassembled parts for maintenance. Maintenance of disassembled parts is very time-consuming and labor-intensive. Long-term equipment shutdown will inevitably affect boiler combustion adjustment and is not conducive to the safe, environmental and stable operation of the unit.

[0004] Existing technologies disclose several patents for coal mill maintenance supports. Among them, utility model patent CN218226522U discloses a maintenance support for a coal mill hydraulic cylinder, including a base; a bottom support on the base; supporting columns on the base; and upper and lower clamps connected between the supporting columns. The bottom support has pin holes, and the bottom support secures the bottom of the coal mill hydraulic cylinder with pins. The upper and lower clamps are used to secure the upper and lower parts of the coal mill hydraulic cylinder, respectively. While this solves the problem of unsupported components in the disassembled coal mill hydraulic cylinder, making it difficult to erect and ensuring maintenance quality, thus leading to excessively high maintenance time costs, the problem of limited compatible parts and a complex overall device structure still exists.

[0005] In view of this, the inventors conducted in-depth research to address this need, which led to this case. Utility Model Content

[0006] To overcome the problems of existing technologies still having limited compatibility with a single component and complex overall device structure, this utility model provides a maintenance fixture for coal mill components, including a square base plate and a fixed frame arranged parallel to the base plate. Fixed columns are fixedly installed at the four corners of the upper surface of the base plate, and the other end of each fixed column is fixedly connected to the long side of the fixed frame. Support members are detachably installed in the middle of each fixed column on the same long side of the base plate. A hoisting device is slidably installed on the upper surface of the fixed frame, and an adjusting component is installed at the bottom of the hoisting device.

[0007] The support includes an adjusting rod and a support plate. Several adjusting holes are correspondingly opened on the four fixed columns. The adjusting rod is inserted through and embedded in the adjusting hole on the fixed column opposite to the wide side of the base plate. The support plate is detachably sleeved on the end of the adjusting rod.

[0008] The support system features support plates on both sides of the middle section of the main body, and a hoisting part with adjustment components at the top. During use, the parts to be inspected are suspended by the hoisting part and placed on the two support plates for maintenance. The support structure is simple and easy to use, and can be directly used as a support for daily maintenance of coal mill parts, reducing production costs.

[0009] Preferably, the support plate has a first connecting hole at both ends of the edge where it connects to the fixed column, the first connecting hole is matched with the adjusting rod, and the support plate has a lifting hole in the middle.

[0010] The above technical solution provides first connecting holes on both sides of the support plate, which facilitates fixing the support plate to the fixed column at different heights via adjusting rods. The height of the support plate can be adjusted according to the specific parts being repaired, making it easier for operators to adjust the position of the support plate. At the same time, lifting holes are provided so that lifting devices can be used to adjust the position of the support plate.

[0011] Preferably, the hoisting device includes a drive motor and a winding wheel. The output shaft of the drive motor is fixedly connected to the rotation shaft of the winding wheel. A slide rail is provided at the upper end of the long side of the fixing frame. The drive motor and the winding wheel are mounted on the slide rail through a support frame. The two slide rails are slidably connected to the bottom of the support frame.

[0012] Through the above technical solution, the drive motor drives the winding wheel to control the lifting of the maintenance component. A slide rail is set at the upper end of the fixed frame, and the drive motor is mounted on the slide rail through the support frame. The motor and the winding wheel can be moved on the slide rail by the action of the adjusting component, so that the entire lifting part can slide left and right on the fixed frame, thereby placing the lifted maintenance component in a more suitable position.

[0013] Preferably, a steel wire rope is wound on the winding reel, the steel wire rope passes through the fixing frame, and a hook is fixedly connected to the end of the steel wire rope.

[0014] The above technical solution involves setting a hook at the free end of the wire rope after it passes through the fixed frame. The component to be repaired is lifted by the hook and placed on the support plate. The lifting height and angle are adjusted by the drive motor and the winding wheel so that maintenance personnel can repair the component that needs to be repaired.

[0015] Preferably, the adjusting component includes a first adjusting rod screw threadedly connected to the support frame. The two ends of the first adjusting rod screw are rotatably connected to the two short sides of the fixed frame, respectively. An adjusting wheel is integrally connected to the end of the first adjusting rod screw near the drive motor. A second adjusting rod screw is fixedly installed on the fixed column corresponding to the adjusting wheel. One end of the second adjusting rod screw is toothedly connected to the adjusting wheel, and the other end is connected to an adjusting disc.

[0016] The above technical solution involves setting a first adjusting rod screw and a second adjusting rod screw that cooperates with the adjusting wheel below the support frame. In use, the second adjusting rod screw can be rotated by rotating the adjusting disc, which in turn drives the first adjusting rod screw to rotate through the adjusting wheel. Ultimately, the support frame moves left and right on the fixed frame, thereby achieving the purpose of adjusting and rotating the components suspended on the hook on the support plate, which facilitates the adjustment of the position of the maintenance components for convenient maintenance.

[0017] Preferably, a connecting seat is fixedly provided at the bottom of the support frame close to the slide rail, and a second connecting hole matching the first adjusting rod screw is provided on the connecting seat, and the first adjusting rod screw is threadedly connected to the second connecting hole.

[0018] Through the above technical solution, a connecting seat is integrally set at the bottom of the support frame and a second connecting hole is opened on the connecting seat. The first adjusting rod screw passes through the second connecting hole. When the first adjusting rod screw is rotated, the support frame integrally connected with the connecting seat is displaced so as to adjust the position of the drive motor and the winding wheel.

[0019] Preferably, the long sides of the fixing frame extend outward to the outside of the fixing column, a fixing block is fixedly installed on the fixing column, and a third connecting hole matching the second adjusting rod screw is opened on the fixing block, and the second adjusting rod screw is threadedly connected to the third connecting hole.

[0020] Through the above technical solution, a fixing block with a threaded hole is set on the fixing post near the second adjusting rod screw. Fixing the second adjusting rod screw on the fixing post can prevent the second adjusting rod screw from becoming unstable. At the same time, fixing the second adjusting rod screw on the fixing post can make the adjusting wheel close to the fixing post and the slide rail. The restraint of the fixing post and the fixing frame has a certain constraint on the adjusting wheel, so as to avoid the instability of the second adjusting rod screw and the adjusting wheel.

[0021] Preferably, an adjustment box is provided on the fixed column corresponding to the adjustment disc, the adjustment disc is fixedly connected to the fixed column through the adjustment box, and the adjustment box is provided with an adjustment gear that is connected to both the second adjustment rod screw and the adjustment disc.

[0022] The above technical solution involves setting an adjustment box at the free end of the second adjustment rod screw to connect the adjustment plate and the adjustment disc. Rotating the adjustment disc can drive the adjustment gear to rotate, which in turn drives the second adjustment rod screw to rotate. The adjustment disc is positioned at a low position, making it convenient for maintenance personnel to use.

[0023] Preferably, a number of maintenance ladders are mounted on the two fixed columns on either short side of the base plate.

[0024] By using the above technical solution, maintenance ladders are installed on two fixed columns on one side, which facilitates the overall maintenance of the tooling and also the maintenance of the side of the components.

[0025] Preferably, the upper edge of the support plate is provided with an anti-slip pad.

[0026] The above technical solution provides an anti-slip pad along the upper edge of the support plate, which makes the maintenance components placed on top more stable and prevents them from falling and causing safety accidents.

[0027] The beneficial effects of adopting the technical solution of this utility model are as follows:

[0028] (1) The support plates are set on both sides of the middle part of the support body, and the drive motor and the winding drum are set on the top of the support with the adjusting screw. When in use, the parts to be repaired can be suspended by the hook set on the winding drum and placed on the upper part of the support plate for repair. The support structure is simple, easy to assemble and disassemble, and convenient to use. When the maintenance personnel are repairing the bottom of the parts, the maintenance personnel can be protected, thereby improving the safety of the device during use.

[0029] (2) A steel wire rope is wound on the winding wheel. After the steel wire rope passes through the fixed frame, a hook is set at its free end. After the hook lifts the part to be repaired, the lifting height is adjusted by the drive motor in conjunction with the winding wheel. At the same time, the angle of the part to be repaired can be adjusted during the repair process, so that the repair personnel can easily and effortlessly carry out the repair process.

[0030] (3) By using the first adjusting rod screw in conjunction with the second adjusting rod screw and the adjusting wheel, the second adjusting rod screw can be rotated by rotating the adjusting plate during use, and then the first adjusting rod screw can be rotated by the adjusting wheel, so that the support frame can move left and right on the fixed frame. The adjustment method is simple and effortless, and can be completed without the assistance of many people. Attached Figure Description

[0031] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0032] Figure 1 This is a front view of a maintenance fixture for coal mill parts according to this utility model;

[0033] Figure 2 This is another angle of the structural schematic diagram of a maintenance fixture for coal mill parts according to this utility model;

[0034] In the diagram, 1. Base plate; 2. Fixing frame; 3. Fixing column; 4. Support component; 5. Lifting device; 6. Adjusting rod; 7. Support plate; 8. Adjusting hole; 9. Lifting hole; 10. Drive motor; 11. Winding wheel; 12. Slide rail; 13. Support frame; 14. Steel wire rope; 15. Hook; 16. First adjusting rod screw; 17. Adjusting wheel; 18. Second adjusting rod screw; 19. Adjusting plate; 20. Connecting seat; 21. Fixing block; 22. Adjusting box; 23. Maintenance ladder. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to represent selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0036] This embodiment uses support plates on both sides of the middle of the main body of the support frame. During use, the parts to be repaired are suspended by hooks mounted on the winding drum and placed on the upper part of the support plates for repair. The support frame structure is simple and easy to use, reducing production costs for routine maintenance of coal mill parts. The specific implementation method is as follows:

[0037] like Figure 1-2As shown, a maintenance fixture for coal mill parts includes a square base plate 1 and a fixed frame 2 arranged parallel to the base plate 1. Fixed columns 3 are fixedly installed at the four corners of the upper surface of the base plate 1. The other end of the fixed column 3 is fixedly connected to the long side of the fixed frame 2. Support members 4 are detachably installed in the middle of the fixed column 3 on the same long side of the base plate 1. A hoisting device 5 is slidably installed on the upper surface of the fixed frame 2. An adjusting member is installed at the bottom of the hoisting device 5.

[0038] The support member 4 includes an adjusting rod 6 and a support plate 7. Several adjusting holes 8 are correspondingly opened on the four fixed columns 3. The adjusting rod 6 passes through and is embedded in the adjusting hole 8 on the fixed column 3 opposite to the wide side of the base plate 1. The support plate 7 is detachably sleeved on the end of the adjusting rod 6.

[0039] Here, support plates 7 are set on both sides of the middle part of the support body, and a hoisting part with adjustment parts is set on the top of the support. When in use, the parts to be repaired are suspended by the hoisting part and then placed on the two support plates 7 for repair. The support structure is simple and easy to use. It can be directly used as a support for daily use in the repair of coal mill parts, reducing production costs.

[0040] In a preferred embodiment, the support plate 7 is provided with first connecting holes at both ends of the connection between the support plate 7 and the fixed column 3. The first connecting holes are matched with the adjusting rod 6. The support plate 7 is provided with lifting holes 9 in the middle.

[0041] Here, first connecting holes are provided on both sides of the support plate 7, which makes it easy to fix the support plate 7 to the fixed column 3 at different heights via the adjusting rod 6. The height of the support plate 7 can be adjusted according to the specific parts to be repaired, making it easier for operators to adjust the position of the support plate 7. At the same time, lifting holes 9 are provided so that the support plate 7 can be adjusted in position using a lifting device.

[0042] In a preferred embodiment, the hoisting device 5 includes a drive motor 10 and a winding wheel 11. The output shaft of the drive motor 10 is fixedly connected to the rotation shaft of the winding wheel 11. A slide rail 12 is provided on the upper end of the long side of the fixing frame 2. The drive motor 10 and the winding wheel 11 are mounted on the slide rail 12 through the support frame 13. The two slide rails 12 are slidably connected to the bottom of the support frame 13.

[0043] Here, the drive motor 10 drives the winding wheel 11 to control the lifting of the maintenance component. A slide rail 12 is set at the upper end of the fixed frame 2, and the drive motor 10 is mounted on the slide rail 12 through the support frame 13. The motor and the winding wheel 11 are moved on the slide rail 12 by the action of the adjusting component, so that the entire lifting part slides left and right on the fixed frame, thereby placing the lifted maintenance component in a more suitable position.

[0044] In a preferred embodiment, a wire rope 14 is wound on the winding reel 11, the wire rope 14 passes through the fixing frame 2, and a hook 15 is fixedly connected to the end of the wire rope 14.

[0045] Here, after the wire rope 14 passes through the fixed frame, a hook 15 is set at its free end. The component to be repaired is lifted by the hook 15 and placed on the support plate 7. The lifting height and angle are adjusted by the drive motor 10 in conjunction with the winding wheel 11 so that maintenance personnel can repair the component that needs to be repaired.

[0046] In a preferred embodiment, the adjusting component includes a first adjusting rod screw 16 threadedly connected to the support frame 13. The two ends of the first adjusting rod screw 16 are rotatably connected to the two short sides of the fixed frame 2, respectively. An adjusting wheel 17 is integrally connected to one end of the first adjusting rod screw 16 near the drive motor 10. A second adjusting rod screw 18 is fixedly installed on the fixed column 3 corresponding to the adjusting wheel 17. One end of the second adjusting rod screw 18 is toothedly connected to the adjusting wheel 17, and the other end is connected to an adjusting disc 19.

[0047] Here, a first adjusting rod screw 16 and a second adjusting rod screw 18 that cooperates with the adjusting wheel 17 are provided below the support frame 13. In use, the second adjusting rod screw 18 can be rotated by rotating the adjusting plate 19, which in turn drives the first adjusting rod screw 16 to rotate through the adjusting wheel 17. Ultimately, the support frame 13 moves left and right on the fixed frame, so as to adjust and rotate the parts suspended on the hook 15 on the support plate 7, making it convenient to adjust the position of the maintenance parts for easy maintenance.

[0048] In a preferred embodiment, a connecting seat 20 is fixedly provided at the bottom of the support frame 13 close to the slide rail 12. The connecting seat 20 has a second connecting hole that matches the first adjusting rod screw 16. The first adjusting rod screw 16 is threadedly connected to the second connecting hole.

[0049] Here, a connecting seat 20 is integrally provided at the bottom of the support frame 13, and a second connecting hole is opened on the connecting seat 20. The first adjusting rod screw 16 passes through the second connecting hole. When the first adjusting rod screw 16 is rotated, the support frame 13, which is integrally connected to the connecting seat 20, is displaced so as to adjust the position of the drive motor 10 and the winding wheel 11.

[0050] In a preferred embodiment, the long sides of the fixing frame 2 extend outward to the outside of the fixing post 3. A fixing block 21 is fixedly installed on the fixing post 3. A third connecting hole matching the second adjusting rod screw 18 is opened on the fixing block 21. The second adjusting rod screw 18 is threadedly connected to the third connecting hole.

[0051] Here, a fixing block 21 with a threaded hole is provided on the fixing post 3 near the second adjusting rod screw 18. Fixing the second adjusting rod screw 18 to the fixing post 3 can prevent the second adjusting rod screw 18 from being unstable. At the same time, fixing the second adjusting rod screw 18 to the fixing post 3 can make the adjusting wheel 17 close to the fixing post 3 and the slide rail 12. The fixing post 3 and the fixing frame 2 have a certain constraint on the adjusting wheel 17 to avoid the instability of the second adjusting rod screw 18 and the adjusting wheel 17.

[0052] In a preferred embodiment, an adjustment box 22 is provided on the fixed post 3 corresponding to the adjustment disc 19. The adjustment disc 19 is fixedly connected to the fixed post 3 through the adjustment box 22. An adjustment gear is provided inside the adjustment box 22, which is connected to the second adjustment rod screw 18 and the adjustment disc 19.

[0053] Here, an adjustment box 22 is set at the free end of the second adjustment rod screw 18 to connect the adjustment plate 19 and the adjustment plate 18. The adjustment plate 19 can be rotated to drive the adjustment gear to rotate, and at the same time drive the second adjustment rod screw 18 to rotate. The adjustment plate 19 is set at a low position to facilitate the use of it by maintenance personnel.

[0054] As a preferred embodiment, a number of maintenance ladders 23 are mounted on the two fixed columns 3 on any short side of the base plate 1.

[0055] Here, maintenance ladders 23 are installed on the two fixed columns 3 on one side, which facilitates the overall maintenance of the tooling and also the maintenance of the side of the parts.

[0056] As a preferred embodiment, the upper edge of the support plate 7 is provided with an anti-slip pad.

[0057] Here, an anti-slip pad is provided on the upper edge of the support plate 7, which makes the maintenance parts placed on the upper part more stable and avoids them falling and causing safety accidents due to unstable placement.

[0058] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A tooling system for overhauling coal mill components, characterized in that, It includes a square base plate (1) and a fixed frame (2) arranged parallel to the base plate (1). Fixed columns (3) are fixedly installed at the four corners of the upper surface of the base plate (1). The other end of the fixed column (3) is fixedly connected to the long side of the fixed frame (2). Support members (4) can be detachably installed in the middle of the fixed column (3) on the same long side of the base plate (1). A hoisting device (5) is slidably installed on the upper surface of the fixed frame (2). An adjusting member is installed at the bottom of the hoisting device (5). The support member (4) includes an adjusting rod (6) and a support plate (7). A number of adjusting holes (8) are correspondingly opened on the four fixed columns (3). The adjusting rod (6) is inserted through and embedded in the adjusting hole (8) on the fixed column (3) opposite to the wide side of the base plate (1). The support plate (7) is detachably sleeved on the end of the adjusting rod (6).

2. The maintenance fixture for coal mill components according to claim 1, characterized in that, The support plate (7) is provided with first connecting holes at both ends of the connection between the support plate (7) and the fixed column (3). The first connecting holes are matched with the adjusting rod (6). The support plate (7) is provided with lifting holes (9) in the middle.

3. The maintenance fixture for coal mill components according to claim 1, characterized in that, The hoisting device (5) includes a drive motor (10) and a winding wheel (11). The output shaft of the drive motor (10) is fixedly connected to the rotation shaft of the winding wheel (11). A slide rail (12) is provided on the upper end of the long side of the fixed frame (2). The drive motor (10) and the winding wheel (11) are mounted on the slide rail (12) through a support frame (13). The two slide rails (12) are slidably connected to the bottom of the support frame (13).

4. The maintenance fixture for coal mill components according to claim 3, characterized in that, A steel wire rope (14) is wound on the winding wheel (11), the steel wire rope (14) passes through the fixed frame (2), and a hook (15) is fixedly connected to the end of the steel wire rope (14).

5. A maintenance fixture for coal mill components according to claim 3, characterized in that, The adjusting component includes a first adjusting rod screw (16) threadedly connected to the support frame (13). The two ends of the first adjusting rod screw (16) are rotatably connected to the two short sides of the fixed frame (2). An adjusting wheel (17) is integrally connected to one end of the first adjusting rod screw (16) near the drive motor (10). A second adjusting rod screw (18) is fixedly installed on the fixed column (3) corresponding to the adjusting wheel (17). One end of the second adjusting rod screw (18) is toothedly connected to the adjusting wheel (17), and the other end is connected to an adjusting disc (19).

6. A maintenance fixture for coal mill components according to claim 5, characterized in that, The support frame (13) has a connecting seat (20) fixedly provided at the bottom close to the slide rail (12). The connecting seat (20) has a second connecting hole that matches the first adjusting rod screw (16). The first adjusting rod screw (16) is threadedly connected to the second connecting hole.

7. A maintenance fixture for coal mill components according to claim 5, characterized in that, The long side of the fixing frame (2) extends outward to the outside of the fixing column (3). A fixing block (21) is fixedly installed on the fixing column (3). A third connecting hole matching the second adjusting rod screw (18) is opened on the fixing block (21). The second adjusting rod screw (18) is threadedly connected to the third connecting hole.

8. A maintenance fixture for coal mill components according to claim 5, characterized in that, A regulating box (22) is provided on the fixed column (3) corresponding to the regulating disc (19). The regulating disc (19) is fixedly connected to the fixed column (3) through the regulating box (22). The regulating box (22) is provided with a regulating gear that is simultaneously connected to the second regulating rod screw (18) and the regulating disc (19).

9. A maintenance fixture for coal mill components according to claim 5, characterized in that, Several maintenance ladders (23) are mounted on the two fixed columns (3) on either short side of the base plate (1).

10. A maintenance fixture for coal mill components according to claim 1, characterized in that, The upper edge of the support plate (7) is provided with an anti-slip pad.

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