Transfer platform and transfer method for forcibly replacing motor in narrow air pipe of exhaust fan

Abstract

The invention discloses a transfer platform and a transfer method for replacing a motor in a narrow air pipe of a forced exhaust fan, and belongs to the technical field of transfer of a fan in an exhaust air pipe of a bus hole of a power station, the transfer platform comprises a moving platform, a supporting assembly, a motor horizontal transfer assembly, a motor vertical transfer assembly and an adjusting assembly; the supporting assembly is used for bearing the weight of the motor in the transferring process. The motor horizontal transferring assembly is arranged on the supporting assembly and used for horizontal movement of a motor on the supporting assembly. The motor vertical transferring assembly transfers a motor to the moving platform through lifting motion. The adjusting assembly is used for adjusting the levelness of the supporting assembly. According to the forced replacement and transfer platform and method for the motor in the narrow air pipe of the exhaust fan, the problems that in the prior art, the motor in the exhaust air pipe is difficult to replace, and the replacement efficiency is low can be effectively solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of fan transfer in exhaust ducts of busbar tunnels of power stations, and specifically relates to a platform and method for transferring a motor in a narrow exhaust duct. Background Art

[0002] The motor of the exhaust fan in the right bank busbar tunnel of a power station is installed in an exhaust duct with a diameter of 1060mm. The center of the duct is 1240mm from the ground, and the depth of the motor center in the duct is 1350mm. The motor hanging point is an M16 lifting ring, and the center of the lifting ring is 310mm from the top of the duct. The weight of the motor is 265kg. The entrance of the exhaust duct is in a room with a door height of 2050mm and a width of 860mm.

[0003] Due to the special installation location of the motor, when the motor fails and needs to be replaced, the wall of the exhaust duct cannot withstand multiple people entering at the same time, and ordinary transport trucks cannot reach into the duct. There is a lack of suitable motor lifting tools, which makes it difficult to replace the motor and greatly affects the work efficiency of the staff in replacing the motor. Summary of the Invention

[0004] The purpose of the present invention is to address the above-mentioned shortcomings by providing a platform and method for replacing and transporting motors in narrow exhaust ducts of forced exhaust fans, thereby resolving the problems of difficulty and low replacement efficiency in conventional exhaust duct motor replacement. To achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0005] A platform for replacing and transferring a motor in a narrow air duct of a forced exhaust fan comprises a mobile platform, a support assembly, a motor horizontal transfer assembly, a motor vertical transfer assembly and an adjustment assembly; the support assembly is used to bear the weight of the motor during transfer; the motor horizontal transfer assembly is arranged on the support assembly and is used for horizontal movement of the motor on the support assembly; the motor vertical transfer assembly transfers the motor to the mobile platform through lifting and lowering movements; and the adjustment assembly is used to adjust the level of the support assembly.

[0006] Furthermore, the support assembly includes a support beam and a first adjustment beam; the support beam is vertically fixed on the mobile platform and is a hollow steel pipe structure; one end of the first adjustment beam is inserted and connected to the support beam; a number of through holes are evenly provided on the tube walls of the first adjustment beam and the support beam in the vertical direction, and the first adjustment beam is fixed in the support beam by a pin, and the length of the first adjustment beam extending into the support beam is changed to adjust its height.

[0007] Furthermore, the support assembly also includes a crossbeam and a second adjustment beam; the bottom end of the second adjustment beam is vertically connected to the air duct through the adjustment assembly; the two ends of the crossbeam are respectively hinged to the top ends of the first adjustment beam and the second adjustment beam.

[0008] Furthermore, the adjustment component is a telescopic device, which is fixed in the air duct, and the telescopic end is fixedly connected to the bottom of the second adjustment beam; the telescopic device telescopes in the vertical direction.

[0009] Furthermore, the motor horizontal transfer assembly includes a movable hook; the movable hook includes a movable trolley and a first hook; the movable trolley includes a mounting frame and three sets of bearing pulleys; the mounting frame matches the cross-sectional shape of the beam; the three sets of bearing pulleys are respectively connected to the horizontal sides and top of the mounting frame, and are in contact with the surface of the beam; the first hook is hinged at the bottom of the mounting frame for connecting to the lifting ring on the top of the motor.

[0010] Furthermore, the motor vertical transfer assembly includes a lifting track and a lifting platform; the lifting track is vertically fixed on the mobile platform; and the lifting platform is lifted and lowered along the lifting track.

[0011] Furthermore, a lifting trolley is provided on the lifting platform; a bearing pulley is provided in the lifting trolley and slides in cooperation with the lifting track.

[0012] Furthermore, the lifting platform is provided with a hook; the motor vertical transfer assembly also includes a hoist lifter; the top of the hoist lifter is fixed on the beam; the hoist lifter is provided with a second hook; the second hook of the hoist lifter cooperates with the hook to drive the lifting platform to rise and fall along the lifting track.

[0013] Furthermore, the crossbeam and the second crossbeam are provided with connecting waist holes; the two connecting waist holes are detachably connected to brackets by bolts.

[0014] A method for transporting a motor replacement transfer platform in a narrow air duct of a forced exhaust fan adopts the above-mentioned motor replacement transfer platform in a narrow air duct of a forced exhaust fan; adjust the first adjusting beam to an appropriate height, at this time the end of the beam connected to the second adjusting beam tilts downward, operate the first hook to hook into the lifting ring on the motor, adjust the telescopic device in the air duct to extend until the top of the second adjusting beam is at the same horizontal line as the top of the first adjusting beam, the mobile trolley drives the motor to be transported outside the air duct to just above the lifting platform, the hoist lifter lifts the lifting platform to allow the motor to be subjected to force, remove the first hook, and the hoist lifter drives the lifting platform and its motor down to the mobile platform.

[0015] The beneficial effects of the present invention are:

[0016] This application uses a screw jack to adjust the lifting height of the beam, then uses a mobile hook to transport the motor to the outside of the air duct, and finally uses a lifting platform driven by a hoist to transfer the motor to the ground. This design is simple and easy to use, which can greatly improve work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view of the structure of the present invention;

[0018] Figure 2 It is a top view of the structure of the present invention;

[0019] Figure 3 This is a schematic diagram of the movable hook structure of the present invention;

[0020] In the attached figure: 1. hinge point; 2. first adjusting beam; 3. support beam; 4. latch; 5. trolley handle; 6. mobile platform; 7. universal wheel; 8. hoist lifter; 9. lifting track; 10. second hook; 11. bearing pulley; 12. lifting platform; 13. crossbeam; 15. mobile hook; 16. bracket; 17. second adjusting beam; 18. screw jack. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following figures. Therefore, once an item is defined in one figure, it does not require further definition or explanation in subsequent figures. In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the figures, or the orientations or positional relationships in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation, and are therefore not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and are not to be construed as indicating or implying relative importance. Furthermore, terms such as "horizontal" and "vertical" do not imply that a component must be absolutely horizontal or overhanging, but rather may be slightly tilted. For example, "horizontal" simply refers to a direction that is more horizontal than "vertical," and does not imply that the structure must be completely horizontal, but rather may be slightly tilted. In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0023] Example:

[0024] See attached Figures 1 to 3A motor replacement and transfer platform for a forced exhaust fan in a narrow air duct is connected to the air duct and includes a mobile platform 6 to facilitate the transportation of materials and the like during the initial installation. The mobile platform 6 can be fixed at the entrance of the exhaust duct. The support assembly includes a support beam 3, which is vertically fixed to the mobile platform 6. The support assembly also includes a first adjustment beam 2. In this embodiment, the support beam 3 is a steel pipe with a height of 1200 mm and a DN125×4.5 mm diameter. The first adjustment beam 2 is a steel pipe with a diameter of 1500 mm and a DN100×4 mm diameter. The diameter of the first adjustment beam 2 is smaller than that of the support beam 3 and can be inserted into the support beam 3. A plurality of through holes are provided on the support beam 3 and the first adjustment beam 2, and are connected and fixed by a latch 4. The latch 4 is used to connect different through holes to adjust the height of the first adjustment beam 2 extending out of the support beam 3. The support assembly also includes a crossbeam 13 and a second adjustment beam 17. The second adjustment beam 17 is arranged at one end of the air duct close to the motor. The bottom end of the second adjustment beam 17 is vertically fixed on the adjustment assembly. The two ends of the crossbeam 13 are respectively hinged to the top of the first adjustment beam 2 and the second adjustment beam 17 through a hinge point 1. The height of the second adjustment beam 17 can be adjusted through the adjustment assembly to adjust the crossbeam 13 to a horizontal state. The crossbeam 13 uses a 3000㎜, DN80×4 steel pipe, and the second adjustment beam 17 uses a 750㎜, DN100×4㎜ steel pipe.

[0025] In this embodiment, the motor horizontal transport assembly includes a mobile hook 15, which hoists the motor and moves it horizontally on the beam 13. Specifically, the mobile hook 15 includes a mobile trolley and a first hook. The mobile trolley includes a circular mounting frame that is sleeved on the beam 13. Three sets of bearing pulleys 11 are installed on the mounting frame, one at the top and both sides of the beam 13, driving the mounting frame to move on the beam 13. The first hook is set at the bottom of the mounting frame. The first hook and the mounting frame are connected by an articulated manner and can rotate relative to each other to facilitate connection with the motor. A lifting ring is provided at the top of the motor, and the motor is connected to the mobile hook 15 through the first hook and the lifting ring. In some embodiments, the bearing pulley 11 is driven by a power motor to achieve automation.

[0026] In this embodiment, the motor vertical transport assembly includes a lifting track 9 and a lifting platform 12. The lifting track 9 can be an I-steel structure, as shown in the attached Figure 2As shown in the top view, two parallel I-beam rails are preferably provided, which are vertically fixed on the mobile platform 6. A lifting trolley is provided on one side of the lifting platform 12, and two corresponding I-beam rails are set. A bearing pulley 11 group is provided in the lifting trolley, which is matched with the lifting rail 9 of the I-beam. The two lifting trolleys are respectively matched with the two I-beam lifting rails 9, and the lifting platform 12 can be manually moved up and down along the lifting rail 9. Further, a hoist lifter 8 is provided on the crossbeam 13 above the lifting platform 12, and a second hook 10 is provided on the hoist lifter 8. A hook is provided in the middle part of the side of the lifting platform close to the hoist lifter 8. The second hook 10 is lowered by the hoist lifter 8 and connected with the hook, and then it is raised to drive the lifting platform 12 to move along the lifting rail 9. The hoist lifter 8 can use a hand hoist or an electric hoist in the prior art.

[0027] In this embodiment, the adjustment component is a screw jack 18, which drives the second adjustment beam 17 to rise by rising. The screw jack 18 can meet the movement of the second adjustment beam 17 after the motor is connected.

[0028] In this embodiment, a connecting waist hole is provided on one side of the crossbeam 13 close to the second adjusting beam 17 and on the upper part of the second adjusting beam 17, and a bracket 16 is detachably connected by bolts, which is used to improve the stability of the second adjusting beam 17 when the crossbeam 13 is kept horizontal and the motor is transported, thereby avoiding accidents of tipping over during transportation. The setting of the waist hole can provide a certain degree of redundancy, and the connection angle between the crossbeam 13 and the second adjusting beam 17 changes in real time during the movement of the screw jack 18, and the bracket 16 can also be connected between the two waist holes. During the operation of the screw jack 18, one end of the bracket 16 is first fixed, and the other end is preliminarily connected by bolts, but not tightened, to provide space for the second adjusting beam 17 to move, and then tightened after the crossbeam 13 is level to provide stability.

[0029] In this embodiment, a universal wheel 7 with a brake is provided at the bottom of the mobile platform 6 to facilitate the transportation of materials during the initial installation, and a cart handle 5 is provided on the mobile platform 6 to facilitate the staff's grip.

[0030] The transport method of this embodiment is to transport the motor out of the air duct: adjust the height of the first adjusting beam 2 according to the actual height of the air duct and the height of the motor, and fix the position of the first adjusting beam 2 in the support beam 3 by the latch 4, and reset the spiral jack 18 to the lowest height position. At this time, the beam 13 is in an inclined state and tilted downward at the position of the motor. The staff pushes the mobile trolley to drive the first hook to approach the lifting ring of the motor and hook it on the lifting ring, and then operates the spiral jack 18 to start driving the second adjusting beam 17 to rise until the beam 13 maintains a horizontal position. During the process, the motor is suspended in the air, and then the bracket 16 is tightened at the fixed end to ensure stability during the subsequent movement. The worker and the push-mobile trolley move the motor to the outside of the air duct, and stop above the lifting platform 12. After controlling the second hook 10 on the hoist lifter 8 to connect with the hanging ring, it starts to drive the lifting platform 12 to rise. After the lifting platform 12 contacts the motor, it rises a little distance and separates the first hook from the hanging ring. At this time, the weight of the motor is borne by the lifting platform 12, and the hoist lifter 8 controls the lifting platform 12 to descend to the mobile platform 6, and the motor transfer is completed.

[0031] Transfer the motor to the air duct: Place the motor with good function on the lifting platform 12, and start to drive the lifting platform 12 up through the hoist lifter 8 until it reaches the height of the first hook. After hooking the first hook with the lifting ring, the staff pushes the mobile cart with the motor to the top of the motor installation position in the air duct and stops. Loosen one end of the bracket 16, operate the spiral jack 18 to descend, and the beam 13 begins to tilt downward, driving the motor to move downward until it is in stable contact with the inner wall of the air duct, and then remove the first hook.

[0032] The above description is only a preferred 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 present invention description and drawings, 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 platform for replacing and transferring motors in narrow air ducts of forced exhaust fans, characterized by: The invention comprises a mobile platform (6), a support assembly, a motor horizontal transfer assembly, a motor vertical transfer assembly and an adjustment assembly; the support assembly is used to bear the weight of the motor during the transfer process; the motor horizontal transfer assembly is arranged on the support assembly and is used for the horizontal movement of the motor on the support assembly; the motor vertical transfer assembly transfers the motor to the mobile platform (6) through lifting movement; and the adjustment assembly is used to adjust the level of the support assembly.

2. A motor replacement and transfer platform for a forced exhaust fan in a narrow air duct according to claim 1, characterized in that: The support assembly comprises a support beam (3) and a first adjustment beam (2); the support beam (3) is vertically fixed on a mobile platform (6) and is a hollow steel pipe structure; one end of the first adjustment beam (2) is inserted and connected to the support beam (3); a plurality of through holes are evenly provided on the pipe walls of the first adjustment beam (2) and the support beam (3) in a vertical direction, and the first adjustment beam (2) is fixed in the support beam (3) by a latch (4), and the length of the first adjustment beam (2) extending into the support beam (3) is changed to adjust its height.

3. The platform for replacing and transferring motors in narrow air ducts of forced exhaust fans according to claim 2, characterized in that: The support assembly further comprises a crossbeam (13) and a second adjustment beam (17); the bottom end of the second adjustment beam (17) is vertically connected to the air duct through the adjustment assembly; and the two ends of the crossbeam (13) are hinged to the top ends of the first adjustment beam (2) and the second adjustment beam (17), respectively.

4. The platform for replacing and transferring motors in narrow air ducts of forced exhaust fans according to claim 3, characterized in that: The adjustment component is a telescopic device, which is fixed in the air duct, and the telescopic end is fixedly connected to the bottom of the second adjustment beam (17); the telescopic device telescopes in the vertical direction.

5. The platform for replacing and transferring motors in narrow air ducts of forced exhaust fans according to claim 4, characterized in that: The motor horizontal transfer assembly includes a movable hook (15); the movable hook (15) includes a movable trolley and a first hook; the movable trolley includes a mounting frame and three sets of bearing pulleys (11); the mounting frame matches the cross-sectional shape of the beam (13); the three sets of bearing pulleys (11) are respectively connected to the horizontal sides and the top of the mounting frame, and are in contact with the surface of the beam (13); the first hook is hinged at the bottom of the mounting frame and is used to be connected to the lifting ring on the top of the motor.

6. The platform for replacing and transferring motors in narrow air ducts of forced exhaust fans according to claim 5, characterized in that: The motor vertical transfer assembly comprises a lifting track (9) and a lifting platform (12); the lifting track (9) is vertically fixed on the mobile platform (6); and the lifting platform (12) is lifted and lowered along the lifting track (9).

7. The platform for replacing and transferring motors in narrow air ducts of forced exhaust fans according to claim 6, characterized in that: A lifting trolley is provided on the lifting platform (12); a bearing pulley (11) is provided in the lifting trolley and slides in cooperation with the lifting track (9).

8. The platform for replacing and transferring motors in narrow air ducts of forced exhaust fans according to claim 7, characterized in that: The lifting platform is provided with a hook; the motor vertical transfer assembly also includes a hoist lifter (8); the top of the hoist lifter (8) is fixed on the crossbeam (13); the hoist lifter (8) is provided with a second hook (10); the second hook (10) of the hoist lifter (8) cooperates with the hook to drive the lifting platform (12) to rise and fall along the lifting track (9).

9. The platform for replacing and transferring motors in narrow air ducts of forced exhaust fans according to claim 8, characterized in that: The crossbeam (13) and the second crossbeam (13) are provided with connecting waist holes; the two connecting waist holes are detachably connected with brackets (16) by bolts.

10. A method for transferring a motor in a narrow air duct of a forced exhaust fan using a transfer platform for replacement, characterized in that: A motor replacement transfer platform in a narrow air duct of a forced exhaust fan as described in claim 9 is used; the first adjustment beam (2) is adjusted to a suitable height, at which time the end of the crossbeam (13) connected to the second adjustment beam (17) is tilted downward, the first hook is operated to hook into the lifting ring on the motor, and the telescopic device in the air duct is adjusted to extend until the top of the second adjustment beam (17) is on the same horizontal line as the top of the first adjustment beam (2), the mobile trolley drives the motor to be transferred outside the air duct to just above the lifting platform (12), the hoist lifter (8) lifts the lifting platform (12) to allow the motor to be subjected to force, the first hook is removed, and the hoist lifter (8) drives the lifting platform (12) and its motor down to the moving platform (6).

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