Hoisting device and hoisting system

Abstract

The utility model discloses a hoisting device and a hoisting system.The hoisting device comprises two hoisting units, the two hoisting units are oppositely arranged in the radial direction of a flange plate, the two hoisting units can cooperatively hoist an axial flow deep-well pump, and bearing plates in the hoisting units can be locked to the face, away from a crown block, of the flange plate through threaded fasteners; the stress direction of the axial-flow deep-well pump is changed through the connecting part, the bearing plate is used for supporting the axial-flow deep-well pump, a flange plate on the axial-flow deep-well pump serves as a main stress point, threads on the flange plate cannot be damaged in the hoisting process, and therefore the integrity of the axial-flow deep-well pump is guaranteed, the subsequent repairing procedure is omitted, and the hoisting efficiency is improved. And the maintenance efficiency of the axial-flow deep-well pump is improved.

Description

Technical Field

[0001] This application belongs to the field of hoisting equipment technology, specifically relating to a hoisting device and hoisting system. Background Technology

[0002] Axial flow deep well pumps play a vital role in industrial production, especially in seawater desalination projects. During regular inspections, maintenance, or routine troubleshooting, the pump casing needs to be hoisted as a whole and disassembled section by section. The hoisting work is extensive and the procedures are complex. Therefore, ensuring the safety, stability, and preservation of the equipment during the entire hoisting process is crucial to the quality of the maintenance.

[0003] Currently, the method for hoisting axial flow deep well pumps is to prepare two lifting lugs (U-shaped lifting lugs), insert the pins of the lifting lugs into the connecting threaded holes of the flange of the axial flow deep well pump body, and fit the opening of the U-shaped body onto the flange, and connect and secure its two ends to the two ends of the pins. Then, a steel wire rope is threaded onto the lifting lugs and suspended from the overhead crane hook for hoisting operations.

[0004] However, during the hoisting process, the connecting threaded hole of the axial flow deep well pump is the main stress point. During the hoisting process, the pin will move along the axial direction of the connecting threaded hole, which will scrape the threads in the connecting threaded hole and cause damage to the connecting threaded hole. This requires subsequent repair of the damaged parts, which increases the workload of maintenance. In addition, during the hoisting process, the left and right swing of the lifting lug will affect the stability of the hoisting operation and pose a significant safety hazard. Summary of the Invention

[0005] To address the aforementioned technical problems, this application provides a lifting device to solve the technical problem that, in the process of lifting an axial flow deep well pump, the lifting lugs easily damage the connecting threaded holes on the axial flow deep well pump, leading to an increase in maintenance workload.

[0006] The technical solution adopted to achieve the purpose of this application is as follows:

[0007] A lifting device for lifting an axial flow deep well pump, wherein the pump body is provided with a flange for communicating with a pipeline, the flange having two sets of threaded holes, each set having two threaded holes; characterized in that it comprises two lifting units, the two lifting units being arranged radially opposite to each other along the flange, each lifting unit comprising:

[0008] The load-bearing plate has a support surface for supporting the end face of the flange. The load-bearing plate has two through holes, which are coaxially connected to the two connecting threaded holes respectively.

[0009] A connecting portion for changing the force direction of the axial flow deep well pump; the fixed end of the connecting portion is connected to the load-bearing plate; the connecting end of the connecting portion extends above the support surface of the load-bearing plate and is provided with a lifting shackle for connection with a crane; and...

[0010] The number of threaded fasteners is the same as and corresponds one-to-one with the number of through holes. The threaded fasteners pass through the corresponding through holes and the connecting threaded holes.

[0011] To better realize this application, the above structure is further optimized. The connecting part is a "J" shaped structure, and the plane where the connecting part is located is perpendicular to the plane where the load-bearing plate is located.

[0012] To better realize this application, the above structure is further optimized by making the width of the fixed end of the connecting part greater than the width of the connecting end of the connecting part.

[0013] To better realize this application, the above structure is further optimized by rounding the corners at the connection between the fixed end of the connecting part and the load-bearing plate.

[0014] To better realize this application, the above structure is further optimized by providing a connection hole at the connection end of the connecting part, and the lifting shackle is detachably provided at the connection hole.

[0015] To better realize this application, further optimizations are made to the above structure, and the hoisting unit further includes:

[0016] The hoisting rope, the end of which is connected to the lifting shackle.

[0017] To better realize this application, the above structure is further optimized, with the two perforations respectively located near the two ends of the load-bearing plate, and the connecting part located between the two perforations.

[0018] To better realize this application, the above structure is further optimized, wherein the load-bearing plate is an arc-shaped plate structure, and the opening of the load-bearing plate is disposed away from the connecting part.

[0019] To better realize this application, the above structure is further optimized by welding the load-bearing plate and the connecting part together.

[0020] On the other hand, this application also provides a hoisting system, which includes an overhead crane and the aforementioned hoisting device.

[0021] As can be seen from the above technical solution, the two lifting units in the lifting device provided in this application can cooperate to lift the axial flow deep well pump. The load-bearing plate in the lifting unit can be locked to the side of the flange away from the overhead crane by threaded fasteners, and the force direction of the axial flow deep well pump is changed by the connection part. The load-bearing plate supports the axial flow deep well pump, making the flange on the axial flow deep well pump the main force point. During the lifting process, the threads on the flange will not be damaged, thereby ensuring the integrity of the axial flow deep well pump, saving subsequent repair procedures and improving the maintenance efficiency of the axial flow deep well pump. Attached Figure Description

[0022] Figure 1 This is a structural schematic diagram of a hoisting device according to this application.

[0023] Figure 2 This is a structural diagram of a hoisting system according to this application during use.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1-Load-bearing plate, 11-Perforation;

[0026] 2-Connecting part, 21-Connecting hole;

[0027] 3-Suspension rope;

[0028] 4- Lifting shackles;

[0029] 5-Axial flow deep well pump. Detailed Implementation

[0030] To enable those skilled in the art to better understand this application, the technical solution of this application will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] In the embodiments of this application, such as Figure 1 As shown: This hoisting device can be used to hoist the axial flow deep well pump 5. The cylinder of the axial flow deep well pump 5 is provided with a flange for connecting to the pipeline. The flange is provided with two sets of connecting threaded holes, and each set of connecting threaded holes has two holes.

[0032] The lifting device includes two lifting units, each comprising a load-bearing plate 1, a connecting part 2, and threaded fasteners (not shown in the figure); wherein,

[0033] The load-bearing plate 1 is provided with a support surface for supporting the end face of the flange, and the load-bearing plate 1 is provided with two through holes 11, the positions of the two through holes 11 corresponding to the positions of the two connecting threaded holes on the flange respectively.

[0034] The fixed end of the connecting part 2 is connected to the load-bearing plate 1, the connecting end of the connecting part 2 extends above the support surface of the load-bearing plate 1, and the connecting end of the connecting part 2 is provided with a lifting shackle 4 connected to the overhead crane.

[0035] When using the hoisting device to hoist the axial flow deep well pump 5, the load-bearing plate 1 is attached to the side of the flange away from the overhead crane, and the two through holes 11 on the load-bearing plate 1 are connected to the two connecting threaded holes on the flange. The threaded fasteners are passed through the through holes 11 and connected to the connecting threaded holes to lock the load-bearing plate 1.

[0036] Connect the hoisting end of the overhead crane to the lifting shackle 4;

[0037] Controlling the crane's movement, the axial flow deep well pump 5 is lifted. During the lifting process, the load-bearing plate 1 provides support, lifting the axial flow deep well pump 5 upwards. The connecting end of the connecting part 2 is located above the support surface of the load-bearing plate 1, making the direction of the crane's pulling force parallel to the axis of the connecting threaded hole. This changes the direction of force on the axial flow deep well pump 5, making the flange on the axial flow deep well pump the load-bearing position, preventing damage to the connecting threaded hole and eliminating the need for subsequent repair of the connecting threaded hole. In addition, the support surface of the load-bearing plate 1 increases the load-bearing surface of the axial flow deep well pump 5, changing the linear force in the traditional lifting process to a surface force, making the lifting of the axial flow deep well pump 5 more stable and preventing it from swinging and colliding with other objects, thus improving the safety of the axial flow deep well pump 5 lifting process.

[0038] It is worth noting that the aforementioned load-bearing plate 1 is fitted to the flange on the axial flow deep well pump. The connecting end of the threaded fastener passes through the through hole 11 and connects to the connecting threaded hole on the flange. Tightening the threaded fastener ensures that the load-bearing plate 1 is tightly fitted to the flange, preventing relative displacement between the load-bearing plate 1 and the axial flow deep well pump 5 during hoisting. Preferably, the through hole 11 is a threaded hole, allowing the threaded fastener to better lock the load-bearing plate 1 and the flange of the axial flow deep well pump 5.

[0039] In some embodiments, the load-bearing plate 1 described above is an arc-shaped plate structure, see [reference]. Figure 1 The opening of the load-bearing plate 1 is located away from the connecting part 2;

[0040] During the hoisting of the axial flow deep well pump 5, at least one hoisting device is typically used. All hoisting units within this device are evenly spaced around the circumference of the pump 5. If there is only one hoisting device, meaning there are two hoisting units, the two units are arranged radially opposite each other along the flange. (See [reference]). Figure 2 Furthermore, the opening of the load-bearing plate 1 in the hoisting unit faces the hoisting axial flow deep well pump 5 to better support the axial flow deep well pump 5 and achieve safe hoisting of the axial flow deep well pump 5.

[0041] In some embodiments, the connecting portion 2 described above has a "J"-shaped structure, see [reference]. Figure 1 The plane where the connecting part 2 is located is perpendicular to the plane where the load-bearing plate 1 is located.

[0042] In some embodiments, the width of the fixed end of the connecting part 2 is greater than the width of the connecting end of the connecting part 2, so as to increase the contact area and the volume of the force-bearing part at the connection between the load-bearing plate 1 and the connecting part 2, thereby improving the structural stability of the hoisting unit.

[0043] In some embodiments, the connection between the fixed end of the connecting part 2 and the load-bearing plate 1 is rounded. This design can better distribute the stress on the fixed end of the connecting part 2 and further improve the structural stability of the hoisting unit. Preferably, the load-bearing plate 1 and the connecting part 2 are connected and fixed by welding to further improve the structural stability of the hoisting unit.

[0044] In some embodiments, the connecting end of the connecting part 2 is provided with a connecting hole 21, and the lifting shackle 4 is detachably provided at the connecting hole 21, so as to make the connection and disassembly of the lifting shackle 4 more convenient.

[0045] In some embodiments, the lifting unit described above further includes a lifting rope 3; wherein,

[0046] The end of the lifting rope 3 is detachably connected to the lifting shackle 4. Preferably, the lifting rope 3 is a steel wire rope. In actual use, the size (diameter) of the lifting rope 3 should be selected according to the weight of the axial flow deep well pump 5 to avoid the lifting rope 3 breaking during the lifting process and causing a safety accident.

[0047] Based on the aforementioned hoisting device, this embodiment also provides a hoisting system, which includes an overhead crane and the aforementioned hoisting device, see [link to documentation]. Figure 2 .

[0048] During operation, the user can determine the number of hoisting devices based on the size and weight of the axial flow deep well pump 5. Multiple hoisting devices can be used to support the axial flow deep well pump 5 together to ensure the safety of the hoisting process.

[0049] Through the above embodiments, this application has the following beneficial effects or advantages:

[0050] 1) The two lifting units in this lifting device can work together to lift the axial flow deep well pump. The load-bearing plate in the lifting unit can be locked to the side of the flange away from the overhead crane by threaded fasteners, and the force direction of the axial flow deep well pump can be changed by the connecting part 2. The load-bearing plate 1 supports the axial flow deep well pump, making the flange on the axial flow deep well pump the main force point. During the lifting process, the threads on the flange will not be damaged, thereby ensuring the integrity of the axial flow deep well pump, saving subsequent repair procedures and improving the maintenance efficiency of the axial flow deep well pump.

[0051] 2) The width of the fixed end of the connecting part 2 in the hoisting unit is greater than the width of the connecting end of the connecting part 2, and the connection between the fixed end of the connecting part 2 and the load-bearing plate 1 is rounded to better disperse the stress of the fixed end of the connecting part 2, thereby further improving the structural stability of the hoisting device.

[0052] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0053] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A hoisting device for hoisting a axial-flow deep-well pump (5), the cylinder of the axial-flow deep-well pump (5) is provided with a flange plate for communicating with a pipeline, the flange plate is provided with two groups of connecting threaded holes, each group of the connecting threaded holes is two, characterized in that, Two lifting units are arranged opposite to each other along the radial direction of the flange plate, and the lifting unit comprises: A load-bearing plate (1) is provided with a support surface for supporting the end surface of the flange plate, and two through holes (11) are arranged on the load-bearing plate (1), and the two through holes (11) are coaxially communicated with the two connecting threaded holes, respectively; A connecting part (2) is used to change the stress direction of the axial flow deep well pump (5), the fixed end of the connecting part (2) is connected with the load-bearing plate (1), the connecting end of the connecting part (2) extends above the support surface of the load-bearing plate (1), and a lifting shackle (4) for connecting with the crown block is arranged on the connecting end; and Threaded fasteners are arranged in the same number as the through holes (11) and one-to-one correspondence, and the threaded fasteners pass through the corresponding through holes (11) and connecting threaded holes.

2. The hoisting device of claim 1, wherein The connecting part (2) is a "J" shaped structure, and the plane where the connecting part (2) is located is perpendicular to the plane where the load-bearing plate (1) is located.

3. The hoisting device of claim 2, wherein The width of the fixed end of the connecting part (2) is greater than the width of the connecting end of the connecting part (2).

4. The hoisting device of claim 3, wherein The connecting part (2) is chamfered at the connection between the fixed end and the load-bearing plate (1).

5. The hoisting device of claim 1, wherein The connecting end of the connecting part (2) is provided with a connecting hole (21), and the lifting shackle (4) is detachably arranged at the connecting hole (21).

6. The hoisting arrangement according to any one of claims 1 to 5, characterized in that The lifting unit further comprises: A lifting rope (3) is connected with the lifting shackle (4) at the end thereof.

7. The hoisting device of claim 6, wherein The two through holes (11) are arranged near the two ends of the load-bearing plate (1), respectively, and the connecting part (2) is located between the two through holes (11).

8. The hoisting device of claim 1, wherein The load-bearing plate (1) is an arc-shaped plate structure, and the opening of the load-bearing plate (1) is arranged away from the connecting part (2).

9. The hoisting device of claim 1, wherein, The load-bearing plate (1) and the connecting part (2) are connected and fixed by welding.

10. A hoisting system characterized by, The lifting device comprises a crown block and the lifting device according to any one of claims 1 to 9.

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