Disassembling and assembling tool special for main shaft for fan maintenance

Abstract

The utility model discloses a special spindle dismounting tool for fan maintenance, which comprises a base and a dismounting mechanism, universal wheels are arranged at four corners of the lower end of the base, a placing seat is arranged on the rear side of the upper end of the base, a fixing plate is arranged at the upper end of the placing seat, and a moving table is slidably connected to the front side of the upper end of the base; according to the disassembling and assembling tool special for the main shaft for fan maintenance, hoisting and disassembling equipment are integrated, a rotor can be rapidly and conveniently pulled out, the disassembling and assembling steps are greatly reduced, the disassembling and assembling efficiency is improved, and the disassembling and assembling efficiency is improved. And the movable limiting device is further arranged, flexible adjustment can be conducted according to draught fans of different sizes, the limiting and supporting effects are provided for the main shaft, and the potential safety hazard that the main shaft loosens and falls in the disassembling and assembling process is effectively avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of axial flow fan main shaft maintenance, in particular to a special main shaft disassembly and assembly tool for fan maintenance. Background Art

[0002] Axial flow fan, also known as local ventilator, is a kind of fan commonly used in industrial and mining enterprises. However, it is different from ordinary fans. Its motor and fan blades are in a cylinder, and its appearance is a cylinder. It is used for local ventilation, easy to install, and has obvious ventilation effect and safety. The air duct sends the wind to the designated area. It can be used for ventilation in general factories, warehouses, offices, residences and other places. Axial flow fan is mainly composed of impeller, casing, motor and other parts. The bracket is connected to the casing duct with steel. The impeller and casing of the anti-corrosion axial flow fan are made of fiberglass. Since axial flow fans are usually used in places with high flow requirements and low pressure requirements, large factories often use axial flow fans as ideal ventilation equipment. The axial flow fans used are often large in size, with large internal motors, and heavy internal rotors and main shafts. Therefore, when disassembling and overhauling existing axial flow fans, the disassembly and assembly of the fan main shaft is often the most difficult step. It is usually necessary to use a crane to pull the rotor out of the motor, control the crane to move the rotor and place it on the sleepers, disassemble the rotor, and then use the crane to lift the main shaft. The main shaft is manually taken out from the rotor for maintenance. The traditional disassembly of the fan main shaft requires manual control of the crane to move the rotor and main shaft at all times, and the lifting work must be performed multiple times. The disassembly process is cumbersome and the labor burden is heavy. Manual disassembly of the heavy main shaft without a limit device is prone to safety accidents. For this reason, we propose a special disassembly and assembly tool for the main shaft of a fan maintenance. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a special disassembly and assembly tool for the main shaft of the fan maintenance. The lifting and disassembly equipment are integrated into one, and the rotor can be pulled out quickly and conveniently, which greatly reduces the disassembly and assembly steps and reduces the labor burden. A movable limit device is also provided, which can be flexibly adjusted according to fans of different sizes to provide limit and support effects for the main shaft, effectively avoiding the safety hazard of the main shaft loosening and falling during the disassembly and assembly process, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a special disassembly and assembly tool for the main shaft of a fan maintenance, comprising a base and a disassembly and assembly mechanism;

[0005] Base: Universal wheels are arranged at the four corners of the lower end, a placement seat is arranged at the rear side of the upper end of the base, a fixing plate is arranged at the upper end of the placement seat, and a moving platform is slidably connected to the front side of the upper end of the base;

[0006] Disassembly and assembly mechanism: It includes a lifting block, a slide groove and a clamping block. The lifting block is slidably connected to the inside of the mobile platform through the protrusions on the left and right sides. The slide groove is opened in the middle of the upper end of the lifting block, and the clamping blocks are slidably connected to the inside of the slide groove, providing a basis for limiting the main shaft. The lifting and disassembly equipment are integrated into one, and the rotor can be pulled out quickly and conveniently, which greatly reduces the disassembly and assembly steps and reduces the labor burden. A movable limit device is also provided, which can be flexibly adjusted according to fans of different sizes, providing limit and support effects for the main shaft, and effectively avoiding the safety hazard of the main shaft loosening and falling during disassembly and assembly.

[0007] Furthermore, the disassembly and assembly mechanism also includes a buffer assembly, which includes a sliding column, a buffer plate and a spring. Sliding holes are opened in the middle of the relative inner side surfaces of the clamping block. The sliding columns are slidably connected to the inside of the sliding holes. The outer ends of the two sliding columns on the same side are fixedly connected to a buffer plate. Springs are provided between the inner ends of the sliding columns and the inner walls of the sliding holes to provide a buffering effect for the limiting of the main shaft.

[0008] Furthermore, the disassembly and assembly mechanism also includes a bidirectional screw and a knob. The bidirectional screw is rotatably connected to the inside of the slide groove, and the outer surface of the bidirectional screw is threadedly connected to the inner lower end of the clamping block. The knob is arranged at the right end of the bidirectional screw, which can quickly clamp and release the spindle.

[0009] Furthermore, the disassembly and assembly mechanism also includes a lifting component, which includes a screw rod 1, a worm wheel, a worm and a handwheel. The screw rod 1 is rotatably connected to the middle of the interior of the moving platform, the outer surface of the screw rod 1 is threadedly connected to the middle of the interior of the lifting block, the worm wheel is arranged at the lower end of the screw rod 1, the worm is rotatably connected to the lower end of the interior of the moving platform, the two worm wheels are meshed with the worm, and the handwheel is arranged at the right end of the worm, so that the height of the lifting block can be quickly adjusted.

[0010] Furthermore, the disassembly and assembly mechanism also includes a driving component, which includes a second screw rod, a guide wheel and a motor. The guide wheels are all arranged at the lower end of the mobile platform, and the outer edge of the guide wheel is mounted in cooperation with the upper end of the base. The second screw rod is rotatably connected to the middle part of the upper end of the base, and the middle part of the outer surface of the second screw rod is threadedly connected to the inner lower end of the mobile platform. The motor is arranged at the inner lower end of the placement seat, and the input end of the motor is electrically connected to the output end of the single-chip microcomputer. The front end of the output shaft of the motor is fixedly connected to the rear end of the second screw rod, so that the position of the mobile platform can be quickly adjusted.

[0011] Furthermore, it also includes a support frame and an electric hoist. The support frames are both arranged at the upper end of the base. A crossbeam is provided between the upper ends of the opposite inner sides of the two support frames. The electric hoist is slidably connected to the lower end of the crossbeam. The input end of the electric hoist is electrically connected to the output end of the single-chip microcomputer, so that the rotor and the main shaft can be quickly lifted.

[0012] Furthermore, it also includes a single-chip microcomputer, which is arranged at the upper right end of the placement seat, and the input end of the single-chip microcomputer is electrically connected to an external power supply to provide a control effect for the disassembly and assembly of the main shaft.

[0013] Compared with the prior art, the utility model has the following beneficial effects: the special spindle disassembly and assembly tool for fan maintenance has the following advantages:

[0014] First, move the machine body to the front of the fan through the universal wheel, and the single-chip computer controls the electric hoist to work. The electric hoist pulls out the rotor, and then slowly puts it on the fixed plate on the placement seat, and then preliminarily fixes the rotor through the bolt hole. The single-chip computer controls the operation of the motor, and the output shaft of the motor drives the second screw to rotate. With the rotation of the second screw, the mobile platform moves forward through the guidance of the guide wheel until the mobile platform reaches the appropriate position, and then turns the handwheel, the handwheel drives the worm to rotate, and with the rotation of the worm, the worm wheel also rotates, driving the first screw to rotate, and with the rotation of the first screw, the lifting block moves upward until the lifting block reaches the appropriate position. At this time, the main shaft is located between the two clamping blocks, and the knob is turned to drive the bidirectional screw to rotate. With the rotation of the bidirectional screw, the two clamping blocks move inward synchronously, and with the movement of the clamping blocks, the lifting block slowly moves upward. The punch plate slowly contacts the outer surface of the main shaft. As the clamping block continues to move, the buffer plate contacts the main shaft surface and does not move. The two clamping blocks move inward synchronously, and the spring is compressed by force until the opposite outer sides of the buffer plate are close to the inner side of the clamping block. At this time, the main shaft is clamped and the limiting effect is optimal. Then the rotor and main shaft can be disassembled. After the main shaft is loosened, the single-chip microcomputer controls the motor to run again, and the moving platform moves forward to pull out the main shaft to complete the disassembly of the main shaft. The lifting and disassembly equipment is integrated into one, which can quickly and conveniently pull out the rotor, greatly reducing the disassembly and assembly steps and reducing the labor burden. A movable limit device is also provided, which can be flexibly adjusted according to fans of different sizes to provide limit and support effects for the main shaft, effectively avoiding the safety hazard of main shaft loosening and falling during fan disassembly and assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the cross-sectional structure of the disassembly and assembly mechanism of the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of the buffer component of the utility model;

[0018] Figure 4 It is a structural schematic diagram of the lifting component of the utility model.

[0019] In the figure: 1 base, 2 universal wheel, 3 placement seat, 4 moving platform, 5 disassembly and assembly mechanism, 51 lifting block, 52 slide groove, 53 clamping block, 54 buffer assembly, 541 slide column, 542 buffer plate, 543 spring, 55 bidirectional screw, 56 knob, 57 lifting assembly, 571 screw 1, 572 worm gear, 573 worm, 574 handwheel, 58 drive assembly, 581 screw 2, 582 guide wheel, 583 motor, 6 support frame, 7 beam, 8 electric hoist, 9 single chip microcomputer. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-4 , This embodiment provides a technical solution: a special spindle disassembly and assembly tool for fan maintenance, comprising a base 1 and a disassembly and assembly mechanism 5;

[0022] Base 1: Universal wheels 2 are arranged at the four corners of the lower end thereof, and the universal wheels 2 are self-locking universal wheels, which are convenient for the movement of the machine body. A placement seat 3 is arranged at the rear side of the upper end of the base 1, and a fixing plate is arranged at the upper end of the placement seat 3. The fixing plate is provided with evenly distributed bolt holes, which are convenient for fixing the rotor. A moving platform 4 is slidably connected to the front side of the upper end of the base 1, and also includes a single-chip microcomputer 9, which is arranged at the upper right end of the placement seat 3. The input end of the single-chip microcomputer 9 is electrically connected to an external power supply to provide a control effect for the disassembly and assembly of the main shaft;

[0023] The disassembly and assembly mechanism 5 includes a lifting block 51, a slide groove 52 and a clamping block 53. The lifting block 51 is slidably connected to the inside of the moving platform 4 through the protrusions on the left and right sides. The slide groove 52 is opened in the middle of the upper end of the lifting block 51. The clamping blocks 53 are slidably connected to the inside of the slide groove 52 to provide a basis for limiting the main axis. The disassembly and assembly mechanism 5 also includes a buffer assembly 54. The buffer assembly 54 includes a slide column 541, a buffer plate 542 and a spring 543. Sliding holes are opened in the middle of the opposite inner sides of the clamping block 53. The slide columns 541 are slidably connected to the inside of the sliding holes. The outer ends of the two slide columns 541 on the same side are fixedly connected to a buffer plate 542. The inner ends of the buffer plates 542 are provided with buffer rubber pads. The inner ends of the slide columns 541 and the inner walls of the sliding holes are connected. The disassembly and assembly mechanism 5 also includes a bidirectional screw rod 55 and a knob 56. The bidirectional screw rod 55 is rotatably connected to the inside of the slide groove 52. The outer surface of the bidirectional screw rod 55 is threadedly connected to the inner lower end of the clamping block 53. The knob 56 is arranged at the right end of the bidirectional screw rod 55, which can quickly clamp and release the spindle. The disassembly and assembly mechanism 5 also includes a lifting component 57. The lifting component 57 includes a screw rod 571, a worm wheel 572, a worm 573 and a hand wheel 574. The screw rod 571 is rotatably connected to the middle of the interior of the moving platform 4. The outer surface of the screw rod 571 is threadedly connected to the middle of the interior of the lifting block 51. The worm wheel 572 is arranged at the lower end of the screw rod 571. The worm 573 is rotatably connected to the moving platform 4. At the inner lower end of the moving platform 4, the two worm wheels 572 are meshed and connected with the worm 573, and the hand wheel 574 is arranged at the right end of the worm 573, which can quickly adjust the height of the lifting block 51. The disassembly and assembly mechanism 5 also includes a driving assembly 58, and the driving assembly 58 includes a screw rod 2 581, a guide wheel 582 and a motor 583. The guide wheel 582 is arranged at the lower end of the moving platform 4, and the outer edge of the guide wheel 582 is installed in cooperation with the upper end of the base 1. The screw rod 2 581 is rotatably connected to the middle part of the upper end of the base 1, and the middle part of the outer surface of the screw rod 2 581 is threadedly connected to the inner lower end of the moving platform 4. The motor 583 is arranged at the inner lower end of the placement seat 3, and the input end of the motor 583 is electrically connected to the output end of the single-chip microcomputer 9. The front end of the output shaft of the motor 583 is connected to the screw rod 2 The rear end of 581 is fixedly connected, and the position of the moving platform 4 can be quickly adjusted. It also includes a support frame 6 and an electric hoist 8. The support frames 6 are all arranged at the upper end of the base 1. A crossbeam 7 is provided between the upper ends of the opposite inner sides of the two support frames 6. The electric hoist 8 is slidably connected to the lower end of the crossbeam 7. The input end of the electric hoist 8 is electrically connected to the output end of the single-chip microcomputer 9. The electric hoist 8 is installed at the lower end of the crossbeam 7 using the commonly used method in the prior art. The rotor and the main shaft can be quickly hoisted. The hoisting and disassembly equipment is integrated into one, and the rotor can be pulled out quickly and conveniently, which greatly reduces the disassembly and assembly steps and reduces the labor burden. A movable limit device is also provided, which can be flexibly adjusted according to fans of different sizes to provide limit and support effects for the main shaft.It effectively avoids the potential safety hazard of the spindle loosening and falling during disassembly and assembly.

[0024] The working principle of the special disassembly and assembly tool for the main shaft of the fan maintenance provided by the utility model is as follows: when disassembling the main shaft of the axial flow fan, first move the body to the front of the fan through the universal wheel 2, the single chip computer 9 controls the electric hoist 8 to work, the electric hoist 8 pulls out the rotor, and then slowly puts it on the fixed plate on the placement seat 3, and then preliminarily fixes the rotor through the bolt hole, the single chip computer 9 controls the motor 583 to operate, the output shaft of the motor 583 drives the screw rod 2 581 to rotate, and as the screw rod 2 581 rotates, the moving platform 4 is guided forward by the guide wheel 582 The hand wheel 574 is then turned to drive the worm 573 to rotate. Since the two worm wheels 572 are meshed with the worm 573, the worm wheels 572 rotate with the rotation of the worm 573, driving the screw rod 1 571 to rotate. Since the outer surface of the screw rod 1 571 is connected with the middle thread inside the lifting block 51, the lifting block 51 moves upward with the rotation of the screw rod 1 571 until the lifting block 51 reaches the appropriate position. At this time, the spindle is located between the two clamping blocks 53. The knob 5 is turned to rotate. 6, driving the bidirectional screw rod 55 to rotate, because the outer surface of the bidirectional screw rod 55 is threadedly connected to the inner lower end of the clamping block 53, so as the bidirectional screw rod 55 rotates, the two clamping blocks 53 move inward synchronously, and as the clamping block 53 moves, the buffer plate 542 slowly contacts the outer surface of the spindle, and as the clamping block 53 continues to move, the buffer plate 542 contacts the surface of the spindle and does not move, and the two clamping blocks 53 move inward synchronously, and the spring 543 is compressed by the force until the opposite outer side of the buffer plate 542 is tightly against the inner side of the clamping block 53. At this time, the spindle is After the clamping and limiting effects are optimized, the rotor and the main shaft can be disassembled. After the main shaft is loosened, the single chip computer 9 controls the motor 583 to operate again, and the moving platform 4 moves forward to pull out the main shaft to complete the disassembly of the main shaft. The lifting and disassembly equipment are integrated into one, which can quickly and conveniently pull out the rotor, greatly reducing the disassembly and assembly steps and alleviating the labor burden. A movable limiting device is also provided, which can be flexibly adjusted according to fans of different sizes, providing limiting and supporting effects for the main shaft, and effectively avoiding the safety hazard of the main shaft loosening and falling during the disassembly and assembly process.

[0025] It is worth noting that the single chip microcomputer 9 disclosed in the above embodiment is an S7-200 single chip microcomputer, the motor 583 is a TYCP180-8 motor, the electric hoist 8 is a PA400 electric hoist, and the single chip microcomputer 9 controls the motor 583 and the electric hoist 8 using methods commonly used in the prior art.

[0026] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A special spindle disassembly and assembly tool for fan maintenance, characterized by: It comprises a base (1) and a disassembly and assembly mechanism (5); Base (1): universal wheels (2) are provided at the four corners of the lower end, a placement seat (3) is provided at the rear side of the upper end of the base (1), a fixing plate is provided at the upper end of the placement seat (3), and a moving platform (4) is slidably connected to the front side of the upper end of the base (1); The disassembly and assembly mechanism (5) comprises a lifting block (51), a slide groove (52) and a clamping block (53). The lifting block (51) is slidably connected to the inside of the moving platform (4) through protrusions on the left and right sides. The slide groove (52) is opened in the middle of the upper end of the lifting block (51). The clamping block (53) is slidably connected to the inside of the slide groove (52).

2. A special spindle disassembly and assembly tool for fan maintenance according to claim 1, characterized in that: It also includes a single-chip microcomputer (9), which is arranged at the upper right end of the placement seat (3), and the input end of the single-chip microcomputer (9) is electrically connected to an external power supply.

3. The special spindle disassembly and assembly tool for fan maintenance according to claim 1, characterized in that: The disassembly and assembly mechanism (5) also includes a buffer assembly (54), which includes a slide post (541), a buffer plate (542) and a spring (543). The middle parts of the opposite inner sides of the clamping block (53) are each provided with a slide hole, and the slide posts (541) are each slidably connected to the inside of the slide hole. The outer ends of the two slide posts (541) on the same side are each fixedly connected to a buffer plate (542), and a spring (543) is provided between the inner end of the slide post (541) and the inner wall of the slide hole.

4. The special spindle disassembly and assembly tool for fan maintenance according to claim 1, characterized in that: The disassembly and assembly mechanism (5) further comprises a bidirectional screw rod (55) and a knob (56); the bidirectional screw rod (55) is rotatably connected to the interior of the slide groove (52); the outer surface of the bidirectional screw rod (55) is threadedly connected to the inner lower end of the clamping block (53); and the knob (56) is arranged at the right end of the bidirectional screw rod (55).

5. The special spindle disassembly and assembly tool for fan maintenance according to claim 1, characterized in that: The disassembly and assembly mechanism (5) further comprises a lifting assembly (57), wherein the lifting assembly (57) comprises a screw rod (571), a worm wheel (572), a worm (573) and a hand wheel (574), wherein the screw rod (571) is rotatably connected to the middle of the interior of the moving platform (4), the outer surface of the screw rod (571) is threadedly connected to the middle of the interior of the lifting block (51), the worm wheel (572) is arranged at the lower end of the screw rod (571), the worm (573) is rotatably connected to the lower end of the interior of the moving platform (4), the two worm wheels (572) are meshedly connected to the worm (573), and the hand wheel (574) is arranged at the right end of the worm (573).

6. A special spindle disassembly and assembly tool for fan maintenance according to claim 2, characterized in that: The disassembly and assembly mechanism (5) further comprises a drive assembly (58), the drive assembly (58) comprising a second screw rod (581), a guide wheel (582) and a motor (583), the guide wheel (582) being arranged at the lower end of the movable platform (4), the outer edge of the guide wheel (582) being matched and mounted with the upper end of the base (1), the second screw rod (581) being rotatably connected to the middle part of the upper end of the base (1), the middle part of the outer surface of the second screw rod (581) being threadedly connected to the inner lower end of the movable platform (4), the motor (583) being arranged at the inner lower end of the placement seat (3), the input end of the motor (583) being electrically connected to the output end of the single chip computer (9), and the front end of the output shaft of the motor (583) being fixedly connected to the rear end of the second screw rod (581).

7. A special spindle disassembly and assembly tool for fan maintenance according to claim 6, characterized in that: It also includes a support frame (6) and an electric hoist (8), wherein the support frames (6) are both arranged at the upper end of the base (1), a crossbeam (7) is provided between the upper ends of the opposite inner sides of the two support frames (6), the electric hoist (8) is slidably connected to the lower end of the crossbeam (7), and the input end of the electric hoist (8) is electrically connected to the output end of the single-chip computer (9).

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