Hoist and hoist system for cooling tower gear shaft

Abstract

The application discloses a lifting device for cooling tower speed reducer shafts and belongs to the technical field of maintenance of cooling tower speed reducers. The lifting device for cooling tower speed reducer shafts comprises a base, a support frame, a position adjusting part and a stretching suspension part. The base is used for fixedly mounting on the rotatable hub of the speed reducer. The bottom of the support frame is mounted on the base. The position adjusting part is arranged on the top of the support frame, and when the movable end of the position adjusting part is collinear with the speed reducer shaft, the movement direction of the movable end of the position adjusting part is consistent with the speed reducer shaft. One end of the stretching suspension part is fixed on the movable end of the position adjusting part, and the other end of the stretching suspension part is used for fixing the speed reducer shaft. The application effectively prevents the safety problems caused by the swing and rotation of the speed reducer shaft body, reduces the working strength of the operator in adjusting the swing and rotation of the speed reducer shaft, and solves the technical problem that the lifting path is difficult to align with the maintenance opening in a narrow space.

Description

Technical Field

[0001] This application belongs to the field of maintenance technology for cooling tower reducers, and particularly relates to a hoisting device for the shaft of a cooling tower reducer. Background Technology

[0002] As the core transmission component of a cooling tower, the maintenance of its reducer shaft directly affects the operational stability of the equipment. Traditionally, due to limited internal space and narrow maintenance platforms, large hoisting equipment cannot be effectively deployed during maintenance.

[0003] The relevant technology uses a hand-operated hoist in conjunction with a connecting belt for manual lifting. However, the reducer shaft is heavy and long, and it is prone to deflection and swing when the connecting belt is not under vertical force. This not only causes the connecting position to shift, affecting the stability of the lifting, but also easily causes collision damage between the reducer shaft and surrounding components. This increases the workload of operators in adjusting the position of the lifting equipment, and there is also a safety risk caused by uncontrolled rotation of the shaft. Summary of the Invention

[0004] This application aims to at least solve the technical problem in the prior art that the sleeve belt is prone to deflection and swing when it is not subjected to perpendicular force, which poses a safety risk due to uncontrolled rotation of the shaft.

[0005] In a first aspect, this application provides a hoisting device for a cooling tower reducer shaft, comprising: a base, a support frame, a position adjustment part, and a tension suspension part; The base is used for fixed installation on the rotatable hub of the reducer; The bottom of the support frame is mounted on the base; The position adjustment part is located on the top of the support frame, and when the movable end of the position adjustment part is collinear with the reducer shaft, the movement direction of the movable end of the position adjustment part is consistent with the reducer shaft. One end of the tension suspension is fixed to the movable end of the position adjustment part, and the other end of the tension suspension is used to fix the reducer shaft.

[0006] According to one embodiment of this application, the position adjustment part includes: a positioning plate and a movable shaft passing through the positioning plate; When the movable shaft is collinear with the reducer shaft, the direction of movement of the movable shaft is the same as that of the reducer shaft, and one end of the tension suspension is fixed to the movable shaft.

[0007] According to one embodiment of this application, there are two positioning plates, which are spaced apart; one end of the tension suspension part is located between the two positioning plates.

[0008] According to one embodiment of this application, the two ends of the movable shaft are threadedly connected to limit blocks, which are adapted to abut against one side of the positioning plate for limiting.

[0009] According to one embodiment of this application, the tension suspension includes a hand chain hoist and a connecting belt; One end of the hand chain hoist is fixed to the movable shaft, and the other end of the hand chain hoist is equipped with the connecting strap, which is used to connect and fix to the reducer shaft.

[0010] According to one embodiment of this application, the support frame includes a vertical support and a horizontal support; The vertical support is fixed to the base and is perpendicular to the base; the horizontal support is fixed to the vertical support and is parallel to the base; the positioning plate is fixed below the horizontal support and is located on the side of the vertical support away from the base.

[0011] According to one embodiment of this application, the base is provided with a clamping plate and an adjusting member; The adjusting member is connected to the clamping plate and the base to adjust the distance between the clamping plate and the base. The rotatable hub of the speed reducer is installed between the clamping plate and the base.

[0012] According to one embodiment of this application, the adjusting member is a threaded rod, the base has a threaded hole, the clamp plate has a through hole, the adjusting end of the threaded rod is located on one side of the through hole, the rod body of the threaded rod is inserted into the through hole, and the threaded end of the threaded rod is connected to the threaded hole.

[0013] According to one embodiment of this application, the base is used for welding to the rotatable hub of the speed reducer.

[0014] Secondly, this application provides a hoisting system, including: a hoisting device, a speed reducer, and a cooling tower body; The cooling tower body has an inspection port on its wall. The speed reducer is located inside the cooling tower; The base of the hoisting device is fixedly installed on the rotatable hub of the reducer. When the rotatable hub of the reducer rotates to the first position, the movable end of the position adjustment part of the hoisting device is collinear with the reducer shaft of the reducer. The tension suspension part of the hoisting device is adapted to fix the reducer shaft of the reducer; when the rotatable hub of the reducer rotates to the second position, the reducer shaft of the reducer is facing the inspection port.

[0015] In summary, this application includes at least one of the following beneficial technical effects: The movable end of the position adjustment part of this application will move axially with the reducer shaft, so that the reducer shaft will not generate rotational torque during the lifting process or axial movement, effectively preventing safety problems caused by the swing and rotation of the reducer shaft, reducing the workload of operators in adjusting the swing and rotation of the reducer shaft, and solving the technical problem of aligning the hoisting path with the maintenance port in a narrow space.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is a schematic diagram of the structure of the hoisting device for the cooling tower reducer shaft provided in the embodiments of this application; Figure 2 This is one of the structural schematic diagrams of the hoisting system for the cooling tower reducer shaft provided in the embodiments of this application; Figure 3 This is the second schematic diagram of the hoisting system for the cooling tower reducer shaft provided in the embodiments of this application; Figure 4 This is the third schematic diagram of the hoisting system for the cooling tower reducer shaft provided in the embodiments of this application.

[0018] Figure label: 10. Lifting device; 100. Base; 110. Clamping plate; 120. Adjusting component; 200. Support frame; 210. Vertical support; 220. Horizontal support; 300. Position adjustment part; 310. Positioning plate; 320. Movable shaft; 321. Limiting block; 400. Tension suspension part; 410. Hand chain hoist; 420. Connecting belt; 20. Cooling tower body; 21. Inspection port; 30. Reducer; 31. Rotatable hub; 32. Reducer shaft. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] In existing technologies, the confined interior space and narrow maintenance platform of cooling towers restrict crane operation, making the reducer shaft prone to swaying and rotation during hoisting. When using fixed hoisting devices, the coupling belt and reducer shaft are often not perpendicular, causing the shaft to easily rotate laterally and collide with the reducer body during lifting, posing a safety hazard. For example, in small-diameter circular cooling towers, operators find it difficult to adjust the hoisting angle, and traction with the coupling belt tilted can easily cause the shaft to deviate uncontrollably.

[0021] The relevant technology uses a hand-operated hoist with a connecting belt for manual lifting. However, the reducer shaft is heavy and long, and it is prone to deflection and swing when the connecting belt is not under vertical force. This not only causes the connecting position to shift, affecting the lifting stability, but also easily causes collision damage between the reducer shaft and surrounding components. This increases the workload of operators in adjusting the position of the lifting equipment, and there is also a safety risk caused by uncontrolled rotation of the shaft.

[0022] The following is for reference. Figures 1-4 This application describes a hoisting device 10 for a cooling tower reducer shaft 32 according to an embodiment of the present application.

[0023] like Figure 1 As shown, the hoisting device 10 for the cooling tower reducer shaft 32 includes: a base 100, a support frame 200, a position adjustment part 300, and a tension suspension part 400; The base 100 is used to fix and install on the rotatable hub 31 of the reducer 30; wherein the base 100 refers to the base structure that bears the overall weight of the device and forms a rigid connection with the rotatable hub 31. The base 100 can be implemented by a metal plate with a clamping mechanism. By adjusting the spacing of the clamping plates 110, it can be adapted to hubs of different sizes. The base 100 can also be welded to the rotatable hub 31 of the reducer 30. This embodiment does not impose any restrictions.

[0024] The bottom of the support frame 200 is mounted on the base 100; wherein the support frame 200 refers to a load-bearing frame extending upward from the base 100, used to lift the position adjustment part 300 to the space above the wheel hub.

[0025] The position adjustment part 300 is located on the top of the support frame 200. Specifically, the position adjustment part 300 is a mechanical component with linear displacement function. When the movable end of the position adjustment part 300 is collinear with the reducer shaft 32, the movement direction of the movable end of the position adjustment part 300 is consistent with that of the reducer shaft 32.

[0026] One end of the tension suspension part 400 is fixed to the movable end of the position adjustment part 300, and the other end of the tension suspension part 400 is used to fix the reducer shaft 32.

[0027] In related technologies, since the maintenance port 21 inside the cooling tower is not perpendicular to the reducer shaft 32, the reducer shaft 32 needs to be moved out of the cooling tower. The reducer shaft 32 is long and heavy, and it is manually hoisted by using a hand hoist 410 in conjunction with a connecting belt 420. However, the connecting belt 420 is prone to deflection and swing when it is not under vertical force, and it is very difficult to control the deflection manually, which poses a safety risk.

[0028] The embodiments described above in this application, such as Figures 2-4 As shown, the rotatable hub 31 of the reducer 30 drives the base 100 to rotate to a predetermined angle. When the movable end of the position adjustment part 300 is collinear with the reducer shaft 32, the tension suspension part 400 fixes the reducer shaft 32 and the movable end of the position adjustment part 300 respectively. When the tension suspension 400 raises the height of the reducer shaft 32, or when the reducer shaft 32 is manually subjected to axial force to move away from the reducer 30, the movable end of the position adjustment 300 will move axially with the reducer shaft 32, so that the reducer shaft 32 will not generate rotational torque during the rising process or the axial movement process. That is, the rotatable hub 31 of the reducer 30 can be safely rotated again to another predetermined angle, so that the reducer shaft 32 corresponds to the maintenance port 21 in the cooling tower, and the reducer shaft 32 can be smoothly removed from the maintenance port 21 in the cooling tower.

[0029] Through the above technical solution, the movable end of the position adjustment part 300 will move axially with the reducer shaft 32, so that the reducer shaft 32 will not generate rotational torque during the lifting process or axial movement, effectively preventing safety problems caused by the swing and rotation of the reducer shaft 32, reducing the workload of operators in adjusting the swing and rotation of the reducer shaft 32, and solving the technical problem of the hoisting path being difficult to align with the maintenance port 21 in a narrow space.

[0030] like Figure 1 As shown, in some embodiments, the position adjustment part 300 includes: a positioning plate 310 and a movable shaft 320 passing through the positioning plate 310; When the movable shaft 320 is collinear with the reducer shaft 32, the movement direction of the movable shaft 320 is consistent with that of the reducer shaft 32, and one end of the tension suspension part 400 is fixed to the movable shaft 320.

[0031] In this embodiment, the positioning plate 310 provides linear motion guidance for the movable shaft 320 through the shaft hole, so that the movable shaft 320 always translates axially along the shaft hole of the positioning plate 310 during the movement; the axial movement of the movable shaft 320 on the positioning plate 310 can adjust the position of the suspension fixing part, so that it keeps collinear with the reducer shaft 32 (the direction of the hoisting force applied by the suspension fixing part is perpendicular to the axis of the reducer shaft 32), thereby avoiding the problem of the reducer shaft 32 rotating or swinging laterally around its own axis during hoisting or axial movement.

[0032] In actual implementation, there are two positioning plates 310, which are spaced apart; one end of the tension suspension part 400 is located between the two positioning plates 310.

[0033] The two positioning plates 310 are arranged in parallel and spaced apart to form a symmetrical support structure. When the movable end of the suspension fixing part is connected between the two positioning plates 310, its lateral displacement is simultaneously restricted by both plates. During the hoisting of the reducer shaft 32, the two positioning plates 310 jointly bear the lateral load from the suspension fixing part, changing the load distribution from single-point support to symmetrical double-point support, thereby improving the stability of the reducer shaft 32's movement.

[0034] In actual operation, the two ends of the movable shaft 320 are threadedly connected to limit blocks 321, which are adapted to abut against one side of the positioning plate 310 for limiting. By forming a stable mechanical limit between the limit blocks 321 and the positioning plate 310, the axial movement of the movable shaft 320 due to external forces during hoisting operations is prevented, thus avoiding safety risks.

[0035] In actual implementation, the tension suspension part 400 includes a hand chain hoist 410 and a connecting belt 420.

[0036] One end of the hand chain hoist 410 is fixed to the movable shaft 320, and the other end of the hand chain hoist 410 is hung with the connecting strap 420, which is used to connect and fix to the reducer shaft 32.

[0037] like Figure 1 As shown, in some embodiments, the support frame 200 includes a vertical support 210 and a horizontal support 220; The vertical support 210 is fixed to the base 100 and is perpendicular to the base 100; the horizontal support 220 is fixed to the vertical support 210 and is parallel to the base 100; the positioning plate 310 is fixed below the horizontal support 220 and is located on the side of the vertical support 210 away from the base 100.

[0038] like Figure 1As shown, in some embodiments, the base 100 is provided with a clamping plate 110 and an adjusting member 120; The adjusting member 120 is connected to the clamping plate 110 and the base 100 to adjust the distance between the clamping plate 110 and the base 100. The rotatable hub 31 of the reducer 30 is installed between the clamping plate 110 and the base 100.

[0039] Specifically, when the rotatable hub 31 is placed between the clamping plate 110 and the base 100, the adjusting member 120 is operated to drive the clamping plate 110 to move toward the base 100. As the distance between the clamping plate 110 and the base 100 gradually decreases, the outer surface of the hub is fixed by the clamping force jointly applied by the clamping plate 110 and the base 100.

[0040] In actual implementation, the adjusting member 120 is a threaded rod, the base 100 has a threaded hole, the clamping plate 110 has a through hole, the adjusting end of the threaded rod is located on one side of the through hole, the rod of the threaded rod is inserted into the through hole, and the threaded end of the threaded rod is connected to the threaded hole.

[0041] Specifically, when it is necessary to adjust the distance between the clamping plate 110 and the base 100, the adjusting end of the threaded rod is manually rotated, and its external thread engages with the threaded hole of the base 100, generating axial displacement and pushing the clamping plate 110 to move along the axis of the through hole. Due to the self-locking characteristic of the threaded pair, the threaded rod and the threaded hole maintain static engagement when there is no external force, preventing the clamping plate 110 from retracting under load. The clearance fit between the through hole and the threaded rod body allows the threaded rod to rotate freely while limiting the lateral offset of the clamping plate 110, ensuring uniform contact between the clamping surface and the hub of the reducer 30.

[0042] like Figures 2-4 As shown, this application also proposes a hoisting system, including: the hoisting device 10, the reducer 30, and the cooling tower body 20 described in any of the above embodiments; The cooling tower body 20 refers to a tower-shaped device that houses the reducer 30 and the internal structure of the cooling tower. The wall of the cooling tower body 20 is provided with an inspection port 21, which can be a rectangular or circular channel. The speed reducer 30 is installed inside the cooling tower body 20; The base 100 of the hoisting device 10 is fixedly installed on the rotatable hub 31 of the reducer 30. When the rotatable hub 31 of the reducer 30 rotates to the first position, the movable end of the position adjustment part 300 of the hoisting device 10 is collinear with the reducer shaft 32 of the reducer 30. The tension suspension part 400 of the hoisting device 10 is adapted to fix the reducer shaft 32 of the reducer 30; when the rotatable hub 31 of the reducer 30 rotates to the second position, the reducer shaft 32 of the reducer 30 is facing the inspection port 21.

[0043] In this embodiment, the rotatable hub 31 of the reducer 30 is first rotated to the first position to drive the base 100 to rotate. When the movable end of the position adjustment part 300 is collinear with the reducer shaft 32, the tension suspension part 400 is used to fix the reducer shaft 32 and the movable end of the position adjustment part 300 respectively. When the tension suspension 400 raises the height of the reducer shaft 32, or when the reducer shaft 32 is manually subjected to axial force to move away from the reducer 30, the movable end of the position adjustment 300 will move axially with the reducer shaft 32, so that the reducer shaft 32 will not generate rotational torque during the rising process or the axial movement process. That is, the rotatable hub 31 of the reducer 30 can be safely rotated to the second position again, so that the reducer shaft 32 corresponds to the maintenance port 21 in the cooling tower, and the reducer shaft 32 can be smoothly removed from the maintenance port 21 in the cooling tower.

[0044] Through the above technical solution, the movable end of the position adjustment part 300 will move axially with the reducer shaft 32, so that the reducer shaft 32 will not generate rotational torque during the lifting process or axial movement, effectively preventing safety problems caused by the swing and rotation of the reducer shaft 32, reducing the workload of operators in adjusting the swing and rotation of the reducer shaft 32, and solving the technical problem of the hoisting path being difficult to align with the maintenance port 21 in a narrow space.

[0045] The terms "first," "second," etc., used in the specification and claims of this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such use of data can be interchanged where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, a first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0046] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0047] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0048] In the description of this application, "multiple" means two or more.

[0049] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0050] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0051] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] Although embodiments of this application have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A hoisting device for a cooling tower reducer shaft, characterized in that, include: Base, support frame, position adjustment part, and tension suspension part; The base is used for fixed installation on the rotatable hub of the reducer; The bottom of the support frame is mounted on the base; The position adjustment part is located on the top of the support frame, and when the movable end of the position adjustment part is collinear with the reducer shaft, the movement direction of the movable end of the position adjustment part is consistent with the reducer shaft. One end of the tension suspension is fixed to the movable end of the position adjustment part, and the other end of the tension suspension is used to fix the reducer shaft.

2. The hoisting device according to claim 1, characterized in that, The position adjustment part includes: a positioning plate and a movable shaft passing through the positioning plate; When the movable shaft is collinear with the reducer shaft, the direction of movement of the movable shaft is the same as that of the reducer shaft, and one end of the tension suspension is fixed to the movable shaft.

3. The hoisting device according to claim 2, characterized in that, The number of positioning plates is two, and the two positioning plates are spaced apart; one end of the tension suspension part is located between the two positioning plates.

4. The hoisting device according to claim 3, characterized in that, The two ends of the movable shaft are threadedly connected to limit blocks, which are adapted to abut against one side of the positioning plate for limiting.

5. The hoisting device according to claim 2, characterized in that, The tension suspension part includes a hand chain hoist and a connecting belt; One end of the hand chain hoist is fixed to the movable shaft, and the other end of the hand chain hoist is equipped with the connecting strap, which is used to connect and fix to the reducer shaft.

6. The hoisting device according to claim 2, characterized in that, The support frame includes vertical supports and horizontal supports; The vertical support is fixed to the base and is perpendicular to the base; the horizontal support is fixed to the vertical support and is parallel to the base; the positioning plate is fixed below the horizontal support and is located on the side of the vertical support away from the base.

7. The hoisting device according to any one of claims 1-6, characterized in that, The base is equipped with a clamping plate and an adjusting component; The adjusting member is connected to the clamping plate and the base to adjust the distance between the clamping plate and the base. The rotatable hub of the speed reducer is installed between the clamping plate and the base.

8. The hoisting device according to claim 7, characterized in that, The adjusting component is a threaded rod. The base has a threaded hole, and the clamp plate has a through hole. The adjusting end of the threaded rod is located on one side of the through hole. The rod body of the threaded rod is inserted into the through hole, and the threaded end of the threaded rod is connected to the threaded hole.

9. The hoisting device according to any one of claims 1-6, characterized in that, The base is used for welding onto the rotatable hub of the speed reducer.

10. A hoisting system, characterized in that, include: The hoisting device, the speed reducer, and the cooling tower body as described in any one of claims 1-9; The cooling tower body has an inspection port on its wall. The speed reducer is located inside the cooling tower; The base of the hoisting device is fixedly installed on the rotatable hub of the reducer. When the rotatable hub of the reducer rotates to the first position, the movable end of the position adjustment part of the hoisting device is collinear with the reducer shaft of the reducer. The tension suspension part of the hoisting device is adapted to fix the reducer shaft of the reducer; when the rotatable hub of the reducer rotates to the second position, the reducer shaft of the reducer is facing the inspection port.

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