Special device for repairing drying cylinder shaft head

Abstract

The utility model belongs to the technical field of auxiliary devices of papermaking equipment, and relates to a special device for repairing a drying cylinder shaft head, which comprises a rotating motor, a stabilizing device, a rotating component and a turning device, the rotating motor is connected with one end of the rotating component through a coupler and the stabilizing device, and the other end of the rotating component is connected with a fixing disc through a bearing. A turning device is arranged on the surface of the rotating assembly, a positioning cover is clamped to the fixing disc, a roller is arranged at the end, away from the rotating motor, of the turning device, the drying cylinder shaft head is detachably installed on the fixing disc, and the roller abuts against the drying cylinder shaft head. The whole drying cylinder does not need to be disassembled, the rotating motor drives the rotating assembly and the turning device to repair the shaft head of the drying cylinder, the labor intensity of operators is effectively reduced, the downtime during disassembly of the drying cylinder is shortened, the production benefit is improved, and the stability of the device and the turning efficiency are guaranteed through the fact that the stabilizing device is matched with the abutting rollers.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary devices for papermaking equipment, in particular to a special device for repairing a drying cylinder shaft head. Background Art

[0002] In the papermaking process, the drying section is an essential process in the production of roll paper. This process is to make the paper pass through a drying cylinder arranged in a certain pattern to achieve the purpose of dehydration. The drying cylinder is a roller-type equipment with high-temperature steam passing through it. When the drying cylinder is working, the long-term rotation of the shaft heads at both ends is prone to wear, which damages the coordination between the shaft head and the withdrawal sleeve and causes the withdrawal sleeve to fall off. After the withdrawal sleeve falls off, the drying cylinder vibrates abnormally, causing great equipment hidden dangers.

[0003] A common maintenance method is to use special polymer materials to repair the worn shaft head. Since this method has high requirements for positioning accuracy, the shaft head after repair has low accuracy in actual application. On the one hand, it is difficult to remove the sleeve and install it; on the other hand, the service life is significantly reduced compared to before. High-precision shaft head repair requires the entire dryer to be removed, and the worn shaft head is turned on a lathe and then the sleeve is inserted to supplement the diameter. This method has high accuracy and long service life after repair, but because the dryer is heavy, disassembly is time-consuming and labor-intensive, and long downtime will cause economic losses. Utility Model Content

[0004] In order to solve the technical problems of high labor intensity and production efficiency affected by downtime in the existing process of disassembling a drying cylinder and turning a repair shaft head, the utility model provides a special device for repairing a drying cylinder shaft head.

[0005] The technical solution of the utility model is achieved through the following scheme: a special device for repairing a drying cylinder shaft head, comprising a rotating motor, a stabilizing device, a rotating assembly and a turning device, the rotating motor is connected to one end of the rotating assembly through a coupling and a stabilizing device, the other end of the rotating assembly is connected to a fixed disk through a bearing, a turning device is provided on the surface of the rotating assembly, a positioning cover is clamped on the fixed disk, a roller is provided on the end of the turning device away from the rotating motor, the drying cylinder shaft head is detachably mounted on the fixed disk, and the roller abuts the drying cylinder shaft head.

[0006] Through the above technical scheme, the rotary motor drives the rotating assembly and the turning device to repair the dryer shaft head without disassembling the entire dryer, which effectively reduces the disassembly workload and the labor intensity of the operator. The stabilizing device and the roller abutting the dryer shaft head cooperate to ensure the stability of the device and the high efficiency of turning, thereby improving the accuracy and efficiency of the repair, reducing downtime and improving production benefits.

[0007] Preferably, the turning device comprises a feed motor, a turning assembly and a bearing seat, the feed motor is connected to the turning assembly via a coupling, and a bearing seat is installed at one end of the turning assembly away from the feed motor.

[0008] Preferably, the turning assembly includes a screw moving device, a moving seat and a turning tool, the turning tool is installed on the side of the moving seat close to the drying cylinder shaft head, the moving seat is movably installed on the screw moving device, the feed motor is connected to the screw moving device through a coupling, and the bearing seat is installed at the end of the screw moving device.

[0009] Preferably, the roller is detachably mounted on the bearing seat via an adjusting rod, and the feed motor is fixedly mounted on the surface of the rotating component.

[0010] Preferably, a tool retraction limit switch is provided at one end of the screw moving device close to the coupling, a tool feed limit switch is provided at one end of the screw moving device close to the bearing seat, and the turning tool abuts against the shaft head of the drying cylinder.

[0011] Through the above technical solution, the turning tool can be accurately moved and adjusted along the direction of the screw through the screw moving device, which improves the flexibility of processing. The roller can also be adjusted according to the adjustment rod and always abuts against the non-turning position of the drying cylinder shaft head to adapt to different turning requirements. The two limit switches effectively prevent the turning tool from excessive feed or retract, reducing the risk of equipment damage.

[0012] Preferably, the rotating assembly includes a rotating shaft and a rotating block, the rotating shaft is keyed to the rotating block, a turning device is mounted on the surface of the rotating block, the rotating motor is connected to the rotating shaft via a coupling and a stabilizing device, and the fixed plate is mounted on the end of the rotating shaft via a bearing.

[0013] Preferably, the stabilizing device comprises a connecting frame and a rotating frame, one end of the connecting frame is fixedly mounted on the rotating motor, the other end of the connecting frame is connected to one end of the rotating frame, and the other end of the rotating frame is connected to the rotating shaft via a bearing.

[0014] Through the above technical scheme, the key connection can maintain high rigidity and stability, reduce the vibration and deformation of the device, and the stabilizing device can effectively resist various forces and moments generated during the rotation process, effectively reduce the vibration and shaking during the rotation process, and improve the working stability and reliability of the entire device.

[0015] In summary, the utility model has the following beneficial effects:

[0016] 1. The utility model repairs the shaft head of the drying cylinder by driving the rotating assembly and the turning device through a rotating motor, and there is no need to disassemble the entire drying cylinder, which effectively reduces the workload of disassembly and the labor intensity of the operators. The stabilizing device and the roller abutting the shaft head of the drying cylinder cooperate to ensure the stability of the device and the high efficiency of turning, thereby improving the accuracy and efficiency of the repair, reducing downtime and improving production efficiency.

[0017] 2. Through the screw moving device, the turning tool can be accurately moved and adjusted along the direction of the screw, which improves the flexibility of processing. The roller can also be adjusted according to the adjustment rod and always abuts against the non-turning position of the drying cylinder shaft head to adapt to different turning requirements. The two limit switches effectively prevent the turning tool from excessive feed or retract, reducing the risk of equipment damage.

[0018] 3. The key connection can maintain high rigidity and stability, reduce the vibration and deformation of the device, and the stabilizing device can effectively resist various forces and moments generated during the rotation process, effectively reduce the vibration and shaking during the rotation process, and improve the working stability and reliability of the entire device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model from the main perspective;

[0020] Figure 2 This is a schematic diagram of the installation structure of the drying cylinder shaft head of the utility model;

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the rotating assembly of the utility model;

[0022] Figure 4 This is a schematic diagram of the turning tool installation structure of the utility model;

[0023] Figure 5 It is an assembly diagram of the screw moving device and the moving seat of the utility model.

[0024] Explanation of the reference numerals in the accompanying drawings: 1. Rotating motor; 2. Stabilizing device; 21. Connecting frame; 22. Rotating frame; 3. Rotating assembly; 31. Rotating shaft; 32. Rotating block; 4. Turning device; 41. Feed motor; 42. Turning assembly; 421. Screw moving device; 422. Moving seat; 423. Turning tool; 43. Bearing seat; 5. Fixed plate; 6. Positioning cover; 7. Adjusting rod; 8. Roller; 9. Drying cylinder shaft head. DETAILED DESCRIPTION

[0025] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure. The present invention is further described in detail below in conjunction with the accompanying drawings.

[0027] A special device for repairing the shaft head of a drying cylinder, such as Figure 1-5As shown, it includes a rotating motor 1, a stabilizing device 2, a rotating assembly 3 and a turning device 4. The rotating motor 1 is connected to one end of the rotating assembly 3 through a coupling and the stabilizing device 2, and the other end of the rotating assembly 3 is connected to a fixed plate 5 through a bearing. The surface of the rotating assembly 3 is provided with a turning device 4, and a positioning cover 6 is clamped on the fixed plate 5. A roller 8 is provided at one end of the turning device 4 away from the rotating motor 1. A dryer shaft head 9 is detachably mounted on the fixed plate 5, and the roller 8 abuts against the dryer shaft head 9. The fixed plate 5 is connected to the dryer shaft head 9 by bolts, and the positioning cover 6 on the fixed plate 5 is clamped into the dryer shaft The head 9 fits tightly inside the mouth, and the stabilizing device 2 reduces the vibration and shaking during the overall turning, making the entire repair process more stable and safer, reducing the risk of accidents during the turning operation, and the roller 8 is tightly attached to the non-turning part of the shaft head to complete the balanced support of the entire turning device 4 during rotation, further protecting the safety of the operator, and repairing the shaft head without disassembling the entire drying cylinder, effectively reducing the tedious disassembly and transportation work, thereby greatly reducing the labor intensity and downtime. A bearing is installed in the center of the fixed plate 5 to remain stationary when the rotating component 3 rotates.

[0028] The turning device 4 includes a feed motor 41, a turning assembly 42 and a bearing seat 43. The feed motor 41 is connected to the turning assembly 42 through a coupling. The end of the turning assembly 42 away from the feed motor 41 is equipped with a bearing seat 43. The roller 8 is detachably mounted on the bearing seat 43 through an adjusting rod 7. The feed motor 41 is fixedly mounted on the surface of the rotating assembly 3. The roller 8 is adjusted by the adjusting rod 7 so that it always abuts against the drying cylinder shaft head 9 to increase adaptability. The feed motor 41 is fixedly mounted on the surface of the rotating block 32, and cooperates with the roller 8 to complete the balanced support of the turning assembly 42. The feed motor 41 and the rotating assembly 3 are connected. The rotating motors 1 are all stepper motors, and the specific models can be selected according to actual use. Both motors are connected to the control cabinet signal. When the feed motor 41 rotates forward, the screw rotates clockwise, and the turning tool 423 feeds. When the feed motor 41 rotates reversely, the screw rotates counterclockwise, and the turning tool 423 retracts. The turning assembly 42 includes a screw moving device 421, a moving seat 422 and a turning tool 423. The screw moving device 421 enables the feeding action to be performed accurately and smoothly. The turning tool 423 is installed on the side of the moving seat 422 close to the drying cylinder shaft head 9. The moving seat 422 is movably installed on the screw moving device 421. The feed The motor 41 is connected to the screw moving device 421 through a coupling, and the bearing seat 43 is installed at the end of the screw moving device 421. A tool retraction limit switch is provided at one end of the screw moving device 421 close to the coupling, and a tool feed limit switch is provided at one end of the screw moving device 421 close to the bearing seat 43. The turning tool 423 abuts against the drying cylinder shaft head 9. The screw moving device 421 is composed of a screw, a linear bearing and a slide rod. The slide rod passes through the linear bearing to complete the limit function, so that its rotational motion is changed into linear motion. The slide rod has a diameter of 30 mm, the screw is an M30 screw, the inner diameter of the linear bearing is 30 mm, and the number of ball rows is 5. The moving seat 422 is an M30 moving block. The turning tool 423 installed on the moving seat 422 is an ordinary external cylindrical tool. The tool body is engraved with a length scale to adjust the turning depth. The specific model and form of the turning tool 423 can be selected according to actual use. It is fixed to the moving seat 422 by a number of tool locking screws. The setting of the tool retraction limit switch and the tool feed limit switch ensures the precise position control of the turning tool 423 during the processing process, avoiding processing errors or equipment damage caused by excessive feed or retraction. The sliding rod is fixed to the fixed block on the surface of the rotating block 32, and its screw is connected to the feed motor 41 through a coupling.

[0029] The rotating assembly 3 includes a rotating shaft 31 and a rotating block 32. The rotating shaft 31 is key-connected to the rotating block 32. The flat key connection ensures a close fit between the two and the stability of power transmission during rotation. A turning device 4 is installed on the surface of the rotating block 32. The rotating motor 1 is connected to the rotating shaft 31 through a coupling and a stabilizing device 2. The fixed plate 5 is installed on the end of the rotating shaft 31 through a bearing. The rotating shaft 31 is a metal shaft with a diameter of φ50mm, which has high rigidity and strength and can withstand the large load generated during turning. The turning device 4 rotates with the rotating block 32 to turn the drying cylinder shaft head 9.

[0030] The stabilizing device 2 includes a connecting frame 21 and a rotating frame 22. One end of the connecting frame 21 is fixedly mounted on the rotating motor 1, and the other end of the connecting frame 21 is connected to one end of the rotating frame 22. The other end of the rotating frame 22 is connected to the rotating shaft 31 through a bearing. The other end of the rotating frame 22 is circular and has a bearing in the center, which cooperates with the rotating shaft 31 and can remain stationary when the rotating shaft 31 rotates. The connecting frame 21 and the rotating frame 22 are combined to form a diamond state, forming a stable support system, which effectively reduces the vibration and shaking that may occur during the rotation process, resists external interference and load changes, ensures the smooth operation of the rotating component 3, and extends the service life of the device.

[0031] The communication methods between the devices all adopt the existing communication methods, which are not the innovation of this application.

[0032] Working principle: Use bolts to connect the fixed plate 5 with the dryer shaft head 9, insert the positioning cover 6 into the opening of the dryer shaft head 9, adjust the roller 8 and the non-turning part of the dryer shaft head 9 by adjusting the rod 7, connect the control cabinet, and the worker installs the turning tool 423 into the moving seat 422, and aligns the 0 scale line of the turning tool 423 with the lower edge of the moving seat 422. Fix it by tightening the tool locking screw, start the feed motor 41, and the moving seat 422 moves back and forth with the screw moving device 421. The feed motor 41 reverses, and the turning tool 423 retracts until the retraction limit switch is detected. At this time, the worker loosens the tool locking screw and adjusts the turning depth as needed. After adjustment, tightens the tool locking screw and enters the turning length. At this time, the rotating motor 1 starts, and the rotating shaft 31 drives the rotating block 32 to rotate, so that the turning tool 423 rotates along the rotation center of the drying cylinder shaft head 9. At this time, the feed motor 41 rotates forward, and the turning tool 423 feeds until the input feed length is reached or the feed limit switch is detected. The feed motor 41 stops, the rotating motor 1 stops, the feed motor 41 reverses, and the turning tool 423 retracts until the retract limit switch is detected. Turning is completed, and the stop button is pressed to stop.

[0033] The above description is only a preferred embodiment of the present invention and does not constitute any other form of limitation to the present invention. Any technician familiar with the profession may use the technical contents disclosed above to change or modify them into equivalent embodiments with equivalent changes for application in other fields. However, any simple modification or equivalent change made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A special device for repairing a drying cylinder shaft head, characterized in that: The invention comprises a rotating motor (1), a stabilizing device (2), a rotating assembly (3) and a turning device (4); the rotating motor (1) is connected to one end of the rotating assembly (3) via a coupling and the stabilizing device (2); the other end of the rotating assembly (3) is connected to a fixed disk (5) via a bearing; a turning device (4) is provided on the surface of the rotating assembly (3); a positioning cover (6) is clamped on the fixed disk (5); a roller (8) is provided at one end of the turning device (4) away from the rotating motor (1); the drying cylinder shaft head (9) is detachably mounted on the fixed disk (5); and the roller (8) abuts against the drying cylinder shaft head (9).

2. The dryer shaft head repair device according to claim 1, characterized in that: The turning device (4) comprises a feed motor (41), a turning assembly (42) and a bearing seat (43); the feed motor (41) is connected to the turning assembly (42) via a coupling; and the bearing seat (43) is installed at one end of the turning assembly (42) away from the feed motor (41).

3. The special device for repairing the shaft head of a drying cylinder according to claim 2, characterized in that: The turning assembly (42) comprises a screw moving device (421), a moving seat (422) and a turning tool (423); the turning tool (423) is installed on a side of the moving seat (422) close to the drying cylinder shaft head (9); the moving seat (422) is movably installed on the screw moving device (421); the feed motor (41) is connected to the screw moving device (421) via a coupling; and the bearing seat (43) is installed at the end of the screw moving device (421).

4. The dryer shaft head repair device according to claim 2, characterized in that: The roller (8) is detachably mounted on the bearing seat (43) via an adjusting rod (7), and the feed motor (41) is fixedly mounted on the surface of the rotating assembly (3).

5. The special device for repairing the shaft head of a drying cylinder according to claim 3, characterized in that: A tool retraction limit switch is provided at one end of the lead screw moving device (421) close to the coupling, and a tool advance limit switch is provided at one end of the lead screw moving device (421) close to the bearing seat (43). The turning tool (423) abuts against the drying cylinder shaft head (9).

6. The dryer shaft head repair device according to claim 1, characterized in that: The rotating assembly (3) comprises a rotating shaft (31) and a rotating block (32); the rotating shaft (31) is key-connected to the rotating block (32); a turning device (4) is mounted on the surface of the rotating block (32); the rotating motor (1) is connected to the rotating shaft (31) via a coupling and a stabilizing device (2); and the fixed plate (5) is mounted on the end of the rotating shaft (31) via a bearing.

7. The dryer shaft head repairing device according to claim 1 is characterized in that: The stabilizing device (2) comprises a connecting frame (21) and a rotating frame (22); one end of the connecting frame (21) is fixedly mounted on the rotating motor (1); the other end of the connecting frame (21) is connected to one end of the rotating frame (22); and the other end of the rotating frame (22) is connected to a rotating shaft (31) via a bearing.

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