A special tool for hoisting economizer, reheater and superheater tube banks
By designing an adjustable lifting mechanism and a self-locking hook, the problem that existing tools cannot meet the needs of pipe hoisting has been solved, achieving uniform force distribution, improved stability and safety, and reducing the risk of damage and production costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE FIRST NORTHEAST ELECTRIC POWER ENG CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-29
AI Technical Summary
Existing hoisting tools cannot meet the requirements of reasonable stress distribution on pipe banks, avoidance of damage, structural stability, and easy installation and disassembly, resulting in increased production costs and reduced construction efficiency.
A lifting tool comprising multiple welded and fixed I-beam steel hangers was designed, equipped with an adjustable lifting mechanism and a self-locking hook, which can adapt to the lifting needs of pipe banks of different specifications, ensure uniform force distribution and stability, and avoid damage.
It improves the versatility and efficiency of hoisting operations, reduces the risk of pipe damage, and enhances construction safety and efficiency.
Smart Images
Figure CN224298688U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the technical field of pipe hoisting tools, specifically relating to a special tool for hoisting economizer, reheater, and superheater pipes. Background Technology
[0002] With the growth in energy demand, megawatt-class ultra-supercritical coal-fired boiler units have become the main trend in the future development of domestic thermal power. Whether it's a tower-type or Π-type boiler, its interior consists of numerous heating surfaces, and these heating surfaces are characterized by a large number and large size of tube banks. However, current operational guidelines and information on specialized construction equipment for on-site tube bank installation are extremely scarce. In actual project construction, it has been found that traditional tube bank hoisting methods are prone to equipment damage, significantly increasing production costs and severely reducing construction efficiency. Therefore, developing more efficient and safer on-site tube bank hoisting methods and equipment has great innovative potential.
[0003] During the transfer and installation of economizer, reheater, and superheater tube banks, the large size and heavy weight of the tube banks make on-site repair extremely difficult if damage occurs. Furthermore, the large number of these tube banks installed in each unit makes the hoisting work arduous, posing a significant challenge to the protection of the finished equipment. Existing hoisting tools and methods are insufficient to meet practical needs, necessitating a new type of hoisting tool that can ensure reasonable stress distribution on the tube banks during hoisting, prevent damage, possess structural stability, resist rigid deformation, and facilitate easy installation and disassembly, thereby effectively improving construction efficiency. Utility Model Content
[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a special tool for hoisting economizer, reheater and superheater tube banks, to solve the problem that the hoisting tools in the prior art cannot meet the actual needs of ensuring reasonable stress on the tube banks, avoiding damage, structural stability and easy installation and disassembly, resulting in increased production costs and reduced construction efficiency.
[0005] To achieve the above objectives, this utility model provides the following technical solution:
[0006] A special tool for hoisting economizer, reheater, and superheater tube banks includes a hanger made of multiple welded and fixed I-beams. Four lugs A are fixedly installed on the upper surface of the hanger, arranged symmetrically in a rectangle. Each lug A contains a lifting ring A, and a steel wire rope A is fixedly installed between two corresponding lifting rings A. Multiple adjustable hoisting mechanisms are provided on the lower surface of the hanger, arranged symmetrically in a rectangle. Each hoisting mechanism has a lug B fixedly installed on its lower surface, containing a lifting ring B. A steel wire rope B is fixedly installed within each lifting ring B, and a self-locking hook is fixedly installed at the end of the steel wire rope away from the lifting ring B, hooking into the corresponding lifting ring B.
[0007] In the above technical solution, multiple hoisting mechanisms are arranged symmetrically in a rectangular shape on the lower surface of the hanger.
[0008] In the above technical solution, the lower surface of the I-beam is provided with multiple positioning holes. The hoisting mechanism includes a base block, and two U-shaped limiting members are fixedly installed on the upper surface of the base block. J-shaped clamping members A and B are respectively inserted into the two U-shaped limiting members. The J-shaped clamping members A and B are clamped and positioned at the lower end of the I-beam. The opposite ends of the J-shaped clamping members A and B are provided with fitting openings. The opposite ends of the J-shaped clamping members A and B are stacked together through the two fitting openings. The opposite ends of the J-shaped clamping members A and B are provided with through openings. A positioning bolt is screwed through and installed on the lower surface of the base block. The top end of the positioning bolt is inserted into the positioning hole through the two through openings.
[0009] In the above technical solution, a U-shaped component is fixedly installed on the lower surface of the bottom block, the positioning bolt is located inside the U-shaped component, and the ear block B is fixedly installed on the lower surface of the U-shaped component.
[0010] In the above technical solution, wire rope clamps are fixedly installed on the outer surface of the wire rope B.
[0011] In the above technical solution, stop blocks are fixedly installed on both the left and right ends of the upper surface of the base block.
[0012] This utility model provides a special tool for hoisting economizer, reheater, and superheater tube banks. Compared with the prior art, the advantages are as follows:
[0013] This invention, by incorporating an adjustable lifting mechanism, breaks free from the limitations of fixed lifting points in traditional lifting tools. It can adapt to the lifting needs of various pipe bank specifications, whether small precision pipe banks or large heavy-duty pipe banks, achieving safe lifting by adjusting the position of the lifting mechanism. This effectively reduces the need for frequent changes of lifting tools due to differences in pipe bank dimensions, improving the versatility and efficiency of lifting operations. Furthermore, by evenly distributing the lifting mechanism under the lifting frame, the pipe bank experiences uniform force during lifting, preventing instability such as tilting or swaying. This uniform force distribution design not only ensures the rationality and integrity of the force distribution during lifting but also reduces the risk of pipe bank damage due to unstable lifting, thereby enhancing the overall safety of the lifting operation and reducing the probability of accidents. Attached Figure Description
[0014] Figure 1 This is a three-dimensional structural diagram of the present invention.
[0015] Figure 2 for Figure 1 Detailed image of point a in the middle.
[0016] Figure 3 for Figure 1 Detailed image of section b in the middle.
[0017] Figure 4 This is an exploded structural diagram of the hoisting mechanism of this utility model.
[0018] Figure 5 This is a schematic diagram of the bottom structure of the I-beam of this utility model.
[0019] Figure 6 This is a schematic diagram of the cross-sectional structure of the I-shaped steel of this utility model.
[0020] Figure 7 This is a schematic diagram of the steel wire rope B structure of this utility model.
[0021] Figures 1-7 The components include: 1. Hanger; 11. Lug A; 12. Lifting ring A; 13. Wire rope A; 2. I-beam; 21. Positioning hole; 3. Lifting mechanism; 31. Base block; 311. Stop block; 32. U-shaped limiter; 33. J-shaped clamp A; 34. J-shaped clamp B; 35. Through port; 36. Positioning bolt; 37. U-shaped component; 4. Lug B; 41. Lifting ring B; 5. Wire rope B; 51. Self-locking hook; 6. Wire rope clamp; 7. Tower crane hook; 8. Pipeline. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] In this embodiment, front, back, left, right, top, and bottom are... Figure 1 Describe the reference plane. See [link / reference] Figures 1-7 This utility model provides a technical solution:
[0024] A special tool for hoisting economizer, reheater, and superheater tube banks includes a hoist 1. The hoist 1 is manufactured by welding and fixing multiple I-beams 2 of different lengths together. The hoist 1 is rectangular in shape. Four lugs A11 are fixed on the upper surface of the hoist 1 by welding or bolting. The four lugs A11 are arranged symmetrically in a rectangle on the upper surface of the hoist 1, and the center point of the rectangle is at the same position as the center point of the upper surface of the hoist 1. Each lug A11 is fitted with a lifting ring A12. A steel wire rope A13 is fixedly installed between two front and rear lifting rings A12. The two steel wire ropes A13 are attached to the tower crane hook 7. The tower crane equipment lifts the gantry 1 for use. The lower surface of the gantry 1 is provided with multiple adjustable lifting mechanisms 3. The multiple lifting mechanisms 3 are symmetrically distributed in a rectangle on the lower surface of the gantry 1. The center point of the rectangle is at the same position as the center point of the lower surface of the gantry 1. Each lifting mechanism 3 has a lug B4 fixedly installed on its lower surface. Each lug B4 has a lifting ring B41 installed inside it. Each lifting ring B41 has a steel wire rope B5 fixedly installed inside it. Each steel wire rope B5 is fixedly connected to a self-locking hook 51 at one end of the lifting ring B41. The self-locking hook 51 is hooked into the corresponding lifting ring B41. Each steel wire rope B5 has a steel wire rope clamp 6 fixedly installed on its outer surface.
[0025] The adjustable hoisting mechanism 3 can adjust its position according to the actual size of the pipe bank 8 to be hoisted, thus making it suitable for hoisting pipe banks 8 of different sizes. When the pipe bank 8 needs to be called, multiple hoisting mechanisms 3 are pre-adjusted to the appropriate hoisting positions and evenly distributed below the hanger 1. Then, one end of each of the multiple steel wire ropes B5 with self-locking hooks 51 is wrapped around the pipe bank 8 and folded in half. Subsequently, the self-locking hooks 51 are hooked onto the corresponding lifting rings B41. Then, the folded steel wire ropes B5 are clamped and fixed using steel wire rope clamps 6 to ensure that the steel wire ropes B5 will not come loose during the hoisting process. Finally, the hanger 1 is smoothly lifted by an external tower crane. At this time, the hanger 1 lifts the pipe bank 8 below simultaneously through the multiple steel wire ropes B5, completing the entire hoisting process.
[0026] Compared with existing lifting devices, the adjustable lifting mechanism 3 breaks the limitation of fixed lifting points of traditional lifting devices and can adapt to the lifting needs of various specifications of pipe banks. Whether it is a small precision pipe bank or a large heavy pipe bank, it can be safely lifted by adjusting the position of the lifting mechanism 3. This effectively reduces the need to frequently change lifting devices due to differences in pipe bank size and improves the versatility and efficiency of lifting work.
[0027] Furthermore, by evenly distributing the lifting mechanism 3 below the hanger 1, the pipe bank can be subjected to uniform force during lifting, avoiding instability such as tilting or swaying. This uniform force distribution design not only ensures the integrity of the pipe bank during lifting and reduces the risk of damage caused by unstable lifting, but also improves the safety of the entire lifting operation and reduces the probability of accidents.
[0028] It should be noted that, in combination Figure 4 , Figure 5 and Figure 6 As shown, multiple positioning holes 21 are provided on the lower surface of the I-beam 2. The positioning holes 21 are equidistantly distributed on the lower surface of the I-beam 2. The hoisting mechanism 3 includes a base block 31. U-shaped limiting members 32 are symmetrically welded and fixedly installed on the upper surface of the base block 31. J-shaped clamping members A33 and B34 are respectively inserted into the two U-shaped limiting members 32. The J-shaped clamping members A33 and B34 are fitted together and clamped at the lower end of the I-beam 2. The opposite ends of the J-shaped clamping members A33 and B34 are provided with mating openings. The opposite ends of the J-type clamping parts A33 and B34 are stacked together through two fitting ports, and the opposite ends of the J-type clamping parts A33 and B34 are both provided with through openings 35. The lower surface of the bottom block 31 is threaded with a positioning bolt 36. The upper outer surface of the positioning bolt 36 is a smooth part to avoid gaps between its top and the positioning hole 21 due to the influence of the thread. This ensures that after the top of the positioning bolt 36 is inserted into the positioning hole 21, its outer surface is completely fitted with the inner surface of the positioning hole 21, thus ensuring the positioning effect.
[0029] The top of the positioning bolt 36 passes through the two through holes 35 and is inserted into the positioning hole 21 of the I-shaped steel 2. By manually turning the positioning bolt 36, its top can be disengaged from the positioning hole 21 and placed in the through hole 35 of the J-type clamp A33. At this time, the hoisting mechanism 3 is disengaged from the fixation between itself and the I-shaped steel 2, so that the hoisting mechanism 3 can slide and adjust its position at the lower end of the I-shaped steel 2. After adjustment, the positioning bolt 36 can be manually turned and re-inserted into the corresponding positioning hole 21 for fixation.
[0030] A U-shaped part 37 is fixedly installed on the lower surface of the base block 31, and the positioning bolt 36 is located on the inner side of the U-shaped part 37. The lug B4 is welded and fixedly installed on the lower surface of the U-shaped part 37.
[0031] Finally, to prevent the positioning bolt 36 from being over-tightened, causing its upper end to disengage from the through-hole 35 and resulting in the J-type clamping parts A33 and B34 sliding outward and disengaging from the U-type limiting part 32 and being lost, after the J-type clamping parts A33 and B34 are respectively inserted and installed into the corresponding U-type limiting parts 32, it is necessary to weld and install stop blocks 311 on both the left and right ends of the upper surface of the base block 31. The distance between the stop block 311 and the adjacent U-type limiting part 32 is less than the length of the J-type clamping parts A33 and B34. In this way, when the top of the positioning bolt 36 disengages from the through-hole 35, the J-type clamping parts A33 and B34 will slide outward in time and will be blocked by the stop block 311, preventing them from disengaging from the U-type limiting part 32 and being lost. This also makes it easier to store the hoisting mechanism 3 and the I-beam 2 after they are disassembled.
[0032] When assembling the lifting mechanism 3 to the lower end of the I-beam 2, first screw the top of the positioning bolt 36 below the through-hole 35. Then, slide the J-type clamps A33 and B34 outward to increase the distance between their upper ends. Next, place the J-type clamps A33 and B34 on both sides of the lower end of the I-beam 2, and then push the J-type clamps A33 and B34 inward. Figure 6 As shown, the upper ends of both are placed on the lower end of the I-beam 2. Then, the position of the sliding adjustment block 31 is adjusted. After the hoisting mechanism 3 is adjusted to a suitable position, the positioning bolt 36 is tightened. The top end of the bolt is inserted through the through-hole 35 of the J-type clamp A33 and the J-type clamp B34 into the positioning hole 21 of the I-beam 2 for positioning. After positioning, the upper surface of the U-type limiting member 32 is in contact with the lower surface of the I-beam 2, and the inner surfaces of the J-type clamp A33 and the J-type clamp B34 are in contact with the outer surface of the I-beam 2. When the pipe row 8 is hoisted, the J-type clamp A33, the J-type clamp B34 and the U-type limiting member 32 are in contact with the I-beam 2 under the action of the positioning bolt 36, and remain stable.
Claims
1. A special tool for hoisting economizer, reheater, and superheater tube banks, comprising a hanger (1) welded and fixed from multiple I-beams (2), characterized in that, Four lugs A (11) are fixedly installed on the upper surface of the hanger (1). The four lugs A (11) are arranged in a rectangular symmetrical manner on the upper surface of the hanger (1). Each lug A (11) is equipped with a lifting ring A (12). A steel wire rope A (13) is fixedly installed between two corresponding lifting rings A (12). The lower surface of the hanger (1) is provided with multiple adjustable lifting mechanisms (3). The multiple lifting mechanisms (3) are arranged in a rectangular symmetrical distribution on the lower surface of the hanger (1). Each of the lifting mechanisms (3) has a lug B (4) fixedly installed on its lower surface. A lifting ring B (41) is installed in the lug B (4). A steel wire rope B (5) is fixedly installed in each lifting ring B (41). A self-locking hook (51) is fixedly installed at the end of the steel wire rope B (5) away from the lifting ring B (41). The self-locking hook (51) is hooked in the corresponding lifting ring B (41).
2. The special tool for hoisting economizer, reheater, and superheater tube banks according to claim 1, characterized in that, Multiple hoisting mechanisms (3) are arranged in a rectangular symmetrical manner on the lower surface of the hanger (1).
3. A special tool for hoisting economizer, reheater, and superheater tube banks according to claim 2, characterized in that, The lower surface of the I-beam (2) is provided with multiple positioning holes (21). The hoisting mechanism (3) includes a base block (31). Two U-shaped limiting members (32) are fixedly installed on the upper surface of the base block (31). J-shaped clamping members A (33) and B (34) are respectively inserted into the two U-shaped limiting members (32). The J-shaped clamping members A (33) and B (34) cooperate to clamp the lower end of the I-beam (2). The opposite ends of the J-type clamping member B (34) are provided with fitting ports. The opposite ends of the J-type clamping member A (33) and the J-type clamping member B (34) are stacked together through two fitting ports. The opposite ends of the J-type clamping member A (33) and the J-type clamping member B (34) are provided with through openings (35). The lower surface of the bottom block (31) is threaded with a positioning bolt (36). The top end of the positioning bolt (36) is inserted into the positioning hole (21) through two through openings (35).
4. A special tool for hoisting economizer, reheater, and superheater tube banks according to claim 3, characterized in that, A U-shaped part (37) is fixedly installed on the lower surface of the bottom block (31), the positioning bolt (36) is located inside the U-shaped part (37), and the ear block B (4) is fixedly installed on the lower surface of the U-shaped part (37).
5. A special tool for hoisting economizer, reheater, and superheater tube banks according to claim 1, characterized in that, The outer surface of the steel wire rope B (5) is fixedly equipped with steel wire rope clamps (6).
6. A special tool for hoisting economizer, reheater, and superheater tube banks according to claim 3, characterized in that, Both ends of the upper surface of the bottom block (31) are fixedly installed with stop blocks (311).