Auxiliary hoisting operation platform for chimney steel platform installation construction

Abstract

The utility model relates to the technical field of chimney steel platform installation, in particular to an auxiliary hoisting operation platform for chimney steel platform installation construction, which comprises a construction platform and a hoisting system. The construction platform comprises a platform body and a fence arranged on the edge of the platform body in a surrounding mode, a hoisting hole is formed in the middle of the platform body, the platform body is provided with a plurality of hoisting points, and a plurality of embedded hanging pieces are arranged at the top of the outer wall of the chimney. The hanging points can be connected with the embedded hanging pieces or main beams of all layers of steel platforms through hanging cables and used for hanging the construction platform in the chimney. The hoisting system comprises a winch, a hoisting cable, a first guide wheel, a second guide wheel, a third guide wheel, an embedded fixing part and a hoisting hoisting pulley. The construction platform is hung in the chimney, and constructors can stand on the construction platform to install all layers of steel platforms. And the winch is mounted on the bottom surface outside the chimney, so that the mounting difficulty of the winch is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of chimney steel platform installation technology, and more specifically, to an auxiliary hoisting operation platform for chimney steel platform installation. Background Technology

[0002] The construction of the steel platform inside the chimney is a challenging and dangerous task in the construction of thermal power plants, involving significant height and risks. The conventional method for installing the chimney steel platform involves using self-made fixtures on the concrete outer cylinder to secure the first winch pulley for lifting the steel structural components. However, this method is complex, requires high precision and quality in the installation of embedded parts, has a complex structure, and cannot provide sufficient working space for the platform's steel beams, posing significant safety hazards. Utility Model Content

[0003] To overcome the shortcomings mentioned above, this utility model aims to provide an auxiliary hoisting operation platform for chimney steel platform installation that can solve the above problems.

[0004] An auxiliary hoisting operation platform for chimney steel platform installation includes a construction platform and a hoisting system.

[0005] The construction platform includes a platform body and a fence surrounding the edge of the platform body. The platform body has a hoisting hole in the middle and multiple hoisting points. Multiple pre-embedded suspension components are provided on the top of the outer wall of the chimney. The hoisting points can be connected to the pre-embedded suspension components or to the main beams of each layer of steel platform by suspension cables, so as to suspend the construction platform inside the chimney.

[0006] The hoisting system includes winches, hoisting cables, first guide wheels, second guide wheels, third guide wheels, embedded fixing components, and hoisting pulleys. Two winches are arranged side by side on the ground outside the bottom of the chimney. Both winches are equipped with hoisting cables. Two first guide wheels are located outside the bottom of the chimney. Two second guide wheels are located at the top of the chimney and above the first guide wheels. Two third guide wheels are located at the top of the chimney and are located on both sides of the second guide wheels. The embedded fixing components are located between the second and third guide wheels. The free end of the hoisting cable passes sequentially around the first, second, and third guide wheels and is fixed to the embedded fixing components. The hoisting pulleys are installed on the hoisting cables between the third guide wheels and the embedded fixing components. The hoisting pulleys can naturally pass through the hoisting holes.

[0007] Furthermore, the winch and the first guide wheel are located on the same side of the chimney, and the line connecting the third guide wheel on one side to the embedded fixing part is parallel to the line connecting the third guide wheel on the other side to the embedded fixing part.

[0008] Furthermore, the two second guide wheels are fixed on the same support, a steel plate is pre-embedded at the top of the chimney, a support beam is welded to the outside of the steel plate, the support is fixed to the top of the support beam, and a diagonal brace is provided between the support and the support beam.

[0009] Furthermore, the platform body is provided with a basket opening, which is located outside the hoisting hole and is used for the passage of the construction basket.

[0010] Furthermore, the lifting point includes a first lifting point and a second lifting point. A plurality of first lifting points are set on the edge of the platform body and are correspondingly set with the pre-embedded suspension component. The first lifting points are connected to the pre-embedded suspension component through the suspension cable. The second lifting point is set on the edge of the lifting hole and is used to connect with the lifting pulley.

[0011] Furthermore, the platform body is spaced apart from the inner wall of the chimney, and multiple wall-mounted wheels are provided on the outer side of the platform body, which roll on the inner wall of the chimney.

[0012] Furthermore, the platform body includes a main frame, a secondary frame, a grid-shaped platform, and a platform plate. The main frame is located at the edge of the platform body, the edge of the hoisting hole, and the edge of the basket hole. The secondary frame and the grid-shaped platform are located within the main frame, and the platform plate is laid on top of the secondary frame.

[0013] Furthermore, the pre-embedded suspension component includes a pre-embedded suspension steel bar, the pre-embedded suspension steel bar is fitted with an outer sleeve, the lower part of the pre-embedded suspension steel bar sleeve and the outer sleeve are pre-embedded in the top wall of the chimney, and the upper part protrudes from the top wall of the chimney, and the upper end of the suspension cable is connected to the outer sleeve through an arched buckle.

[0014] Furthermore, a widened platform is provided on the outer side of the main body of the platform.

[0015] Furthermore, the widened platform includes widened sleeves, widened pipes, edge bars, guardrails, and scaffold boards. Multiple widened sleeves are arranged in a circular array within the bottom edge of the platform body. One end of each widened pipe is inserted into the widened sleeve, and the other end extends to the outside of the platform body. Edge bars are arranged between the outer ends of adjacent widened pipes. Guardrails are arranged at the top of the outer ends of the widened pipes. Scaffold boards are laid on the widened pipes.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] This utility model discloses an auxiliary hoisting platform for chimney steel platform installation, comprising a construction platform and a hoisting system. Embedded suspension components are pre-installed within the top wall of the chimney. The suspension cables are connected to these components or the main beams of each steel platform layer, thus suspending the construction platform inside the chimney. Construction workers can stand on the construction platform to install each layer of the steel platform. The hoisting system of this utility model differs from existing systems in that the winch is installed on the bottom surface outside the chimney, significantly reducing the difficulty of winch installation. First, second, and third guide wheels guide the hoisting cables, and embedded fixing components secure the free end of the hoisting cables. Hoisting pulleys are positioned on the hoisting cables between the third guide wheel and the embedded fixing components to hoist the construction platform and the main beams of each steel structure layer. The second guide wheel also prevents direct contact between the hoisting cables and the external corners of the chimney steel structure, reducing friction. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0019] Figure 1 This is a plan view of the hoisting system in this utility model.

[0020] Figure 2 This is a schematic diagram of the hoisting system in use according to this utility model.

[0021] Figure 3 This is a schematic diagram of the installation of the second guide wheel in this utility model.

[0022] Figure 4 This is a side view of the second guide wheel and support in this utility model.

[0023] Figure 5 This is a schematic diagram of the hoisting state of the construction platform in this utility model.

[0024] Figure 6 yes Figure 5 A top view of the construction platform.

[0025] Figure 7 This is the front view of the construction platform in this utility model.

[0026] Figure 8 This is a schematic diagram of the construction platform in this utility model suspended from the pre-embedded suspension component.

[0027] Figure 9 yes Figure 8 A top view of the construction platform.

[0028] Figure 10 yes Figure 8 A schematic diagram of the connection structure between the suspension cable and the pre-embedded suspension component.

[0029] Figure 11 This is a schematic diagram of the construction platform suspended on the main beam of the steel platform in this utility model.

[0030] Figure 12 yes Figure 10 A top view of the construction platform.

[0031] Figure 13 This is a top view of the construction platform with the widened platform added in this utility model.

[0032] In the diagram: 1. Construction platform; 101. Platform main body; 102. Fence; 2. Lifting hole; 3. Embedded suspension component; 301. Embedded suspension steel bar; 302. Outer sleeve; 4. Winch; 5. Lifting cable; 6. First guide wheel; 7. Second guide wheel; 8. Third guide wheel; 9. Embedded fixing component; 10. Lifting pulley; 11. Support; 12. Steel plate; 13. Support beam; 14. Diagonal brace; 15. Lifting basket hole; 16. First lifting point; 17. Second lifting point; 18. Bow-shaped buckle; 19. Widened pipe; 20. Edge rod; 21. Main beam of platform No. 8; 22. Main beam of platform No. 7; 23. Sandbag; 24. Suspension cable; 25. Third lifting point. Detailed Implementation

[0033] 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.

[0034] The auxiliary hoisting operation platform for the installation and construction of the chimney steel platform in this embodiment includes a hoisting system and a construction platform 1.

[0035] like Figure 1 and Figure 2As shown, the hoisting system is used to hoist the construction platform 1 and the steel beams of each layer of the steel platform. It includes winches 4, hoisting cables 5, first guide wheels 6, second guide wheels 7, third guide wheels 8, embedded fixing parts 9, and hoisting pulleys 10. Two winches 4 are positioned side-by-side on the ground outside the bottom of the chimney, 20-25 meters away from the chimney. Both winches 4 are equipped with hoisting cables 5. Two first guide wheels 6 are located on the outside of the bottom of the chimney, on the same side as the winches 4. Two second guide wheels 7 are located at the top of the chimney, above the first guide wheels 6. Two third guide wheels 8 are located at the top of the chimney, opposite the second guide wheels 7, and on either side of the second guide wheels 7. Embedded fixing parts 9 are positioned between the second guide wheels 7 and the third guide wheels 8. The line connecting one third guide wheel 8 to the embedded fixing part 9 is parallel to the line connecting the other third guide wheel 8 to the embedded fixing part 9. The free end of the lifting sling 5 first passes over the first guide wheel 6 and rises to the top of the chimney, then passes over the second guide wheel 7 and the third guide wheel 8 in sequence and is fixed to the pre-embedded fixing part 9. The lifting pulley 10 is installed on the lifting sling 5 between the third guide wheel 8 and the pre-embedded fixing part 9. The pre-embedded fixing part 9 can be a steel pipe or I-beam pre-embedded in the inner side of the chimney head wall. The lifting sling 5 is fixed to the pre-embedded fixing part 9 after being wound three times.

[0036] In this embodiment, as Figure 3 and Figure 4 As shown, two second guide wheels 7 are fixed on the same support 11. The support 11 includes a base, ear plates, pins, and stiffening ribs. Two pairs of ear plates are fixed on the base, and the second guide wheels 7 are installed between the pairs of ear plates via pins. The stiffening ribs are located on the outer side of the ear plates. A steel plate 12 is pre-embedded at the top of the chimney, and a support beam 13 is welded to the outer side of the steel plate 12. The support 11 is fixed to the top of the support beam 13, and a diagonal brace 14 is provided between the support 11 and the support beam 13.

[0037] In this embodiment, combined with Figure 6 and Figure 7 As shown, the construction platform 1 includes a platform body 101 and a fence 102 surrounding the edge of the platform body 101. A hoisting hole 2 is provided in the middle of the platform body 101, and multiple hoisting points are provided on the platform body 101. Multiple embedded suspension components 3 are provided on the top of the outer wall of the chimney. The hoisting points can be connected to the embedded suspension components 3 or to the main beams of each layer of the steel platform via suspension cables 24, thereby suspending the construction platform 1 inside the chimney. The platform body 101 is provided with a basket opening 15, located outside the hoisting hole 2, for the passage of the construction basket, which is used to transport construction personnel.

[0038] The platform body 101 includes a main frame, a secondary frame, and platform panels. The main frame is located at the edges of the platform body 101, the edges of the hoisting holes 2 and the hoisting basket holes 15, and is made of 32a I-beams. The secondary frame is made of channel steel and is set at equal intervals within the main frame. The grid-shaped platform is made of angle iron and square steel and is set within the main frame. The platform panels are laid on top of the secondary frame and are made of checkered steel plates 12. The railing 102 is set around the platform body 101 and is made of 1.2-meter-high railings and flat irons spaced 40 centimeters apart. To prevent the construction platform 1 from colliding with the concrete wall of the chimney during the lifting process, the construction platform 1 is 400 mm away from the wall on both sides, and six 150 mm wall-mounted wheels are arranged around the circumference to prevent the construction platform 1 from colliding and getting stuck with the outer wall of the chimney.

[0039] In this embodiment, combined with Figure 6 and Figure 9 As shown, the lifting points include a first lifting point 16 and a second lifting point 17. Multiple first lifting points 16 are located at the edge of the platform body 101 and correspond to the pre-embedded suspension components 3, as shown below. Figure 8 and Figure 9 As shown, the first lifting point 16 is connected to the pre-embedded suspension component 3 via the suspension cable 24, and the second lifting point 17 is located at the edge of the lifting hole 2, as shown. Figure 5 and Figure 6 As shown, the second lifting point 17 is used to connect with the lifting pulley 10. (As indicated...) Figure 10 As shown, the embedded suspension component 3 includes an embedded suspension steel bar 301, which is fitted with an outer sleeve 302. The lower part of the embedded suspension steel bar 301 and the outer sleeve 302 are embedded in the top wall of the chimney, while the upper part protrudes from the top wall of the chimney. The upper end of the suspension cable 24 is connected to the outer sleeve 302 via an arched buckle 18. To prevent the suspension cable 24 from directly contacting the outer wall of the chimney and causing wear, burlap sacks 23 are placed under the suspension cable 24 and the concrete wall.

[0040] As shown in the figure, the construction platform 1 in this embodiment is also equipped with a third lifting point 25, such as Figure 11 and Figure 12 As shown, the third suspension point 25 is connected to the main beam of each layer of steel platform through the suspension cable 24, thereby suspending the construction platform 1 under each layer of steel platform in sequence.

[0041] In this embodiment, as Figure 13As shown, a widened platform is provided on the outer side of the platform body 101. The widened platform includes widened sleeves, widened pipes 19, edge bars 20, guardrails, and scaffold boards. Multiple widened sleeves are arranged in a circular array inside the bottom edge of the platform body 101. One end of the widened pipe 19 is inserted into the widened sleeve, and the other end extends to the outer side of the platform body 101. Edge bars 20 are located between the outer ends of adjacent widened pipes 19. Guardrails are located at the top of the outer ends of the widened pipes 19, and scaffold boards are laid on the widened pipes 19. Specifically, the widened sleeves are made of square steel, the widened pipes 19 are made of steel pipes to ensure an effective depth of 1 meter, and the edge bars 20 are made of angle iron welded to the steel pipes.

[0042] The outer chimney of the dust removal and smoke exhaust system is a reinforced concrete structure. The bottom diameter of the outer chimney is 26.2m and the wall thickness is 750mm, while the top diameter is 19m and the wall thickness is 300mm. The outer chimney is 232.5m high. It is designed with two inner steel cylinders. The steel platform inside the chimney has 8 layers, from bottom to top: Platform 1 (load-bearing): elevation 38m; Platform 2 (anti-sway): elevation 60m; Platform 3 (anti-sway): elevation 87.5m; Platform 4 (anti-sway): elevation 112.5m; Platform 5 (suspended): elevation 147m; Platform 6 (anti-sway): elevation 181.5m; Platform 7 (suspended): elevation 216m; Top platform 8 (elevation 230m).

[0043] The working principle of the auxiliary hoisting platform for chimney steel platform installation in this embodiment is as follows:

[0044] 1. Lifting System: Install the second guide wheel 7 and the third guide wheel 8 onto the top of the chimney. Install the first guide wheel 6 on the bottom outer side of the chimney. Install two winches 4 on the same side as the first guide wheel 6, 20-25 meters away from the chimney. Anchor the winches 4 to the ground. Erect an operating room. Set up a closed enclosure around the wire rope. The lifting cable 5 passes through the first guide wheel 6, runs along the outside of the concrete cylinder wall to the second guide wheel 7 and the third guide wheel 8 at the top, and then descends into the chimney to the ground for lifting operations. The lifting device consists of two 10-ton winches 4. The wire rope of the 10-ton winches 4 uses a pulley system to reduce the tension by half. Two 16-ton guide pulleys are installed at the top of the chimney to avoid direct contact between the wire rope and the external corners of the steel structure.

[0045] 2. Construction Platform 1: After the main body of the platform 101 and the railing 102 are assembled, the platform is hoisted to a position of 225.25m using a hoisting system. When the construction platform 1 is raised to 225.25m, construction workers ride in a suspended basket to the bottom of the construction platform 1 and climb up to the surface of the construction platform 1 through the gap (400mm) between the construction platform 1 and the chimney wall. Then, using eight 5t hand-operated hoists that have been pre-suspended and fixed, the construction platform 1 is raised to a position of 227.5m (1.5m from the bottom of the 8-story platform beam; the steel wire rope and hand-operated hoists at the head of the construction platform 1 are suspended and fixed by construction workers riding the construction hoist to the head of the chimney before the outer chimney elevator is removed). The eight diameters pre-embedded in the chimney wall are then used to complete the process. 301 jacket of pre-embedded hanging steel bars The outer sleeve 302 serves as the suspension fixing point. The suspension cable 24 is connected to the eight first suspension points 16 set on the edge of the platform body 101 using an arc-shaped buckle. The steel platform is then installed. To avoid the suspension cable 24 from directly contacting the outer wall of the chimney and causing wear to the suspension cable 24, burlap sacks 23 are placed under the suspension cable 24 and the concrete wall of the chimney.

[0046] After the installation of Platform 8 is completed, the suspension point of Construction Platform 1 is transferred from the eight pre-embedded suspension components 3 above the cylinder head to the main beam 21 of Platform 8. The suspension cable 24 is wrapped around the main beam, and the third suspension point 25 is used for the suspension of Construction Platform 1. After the construction of Platform 7 is completed, the suspension point of Construction Platform 1 is transferred from the main beam 21 of Platform 8 to the main beam 22 of Platform 7. The planar layout of the suspension points is the same as that of Platform 8. The installation of the steel platforms on the 6th, 5th, 4th, 3rd, 2nd, and 1st floors and Construction Platform 1 is carried out in the same manner.

[0047] Since the inner diameter of the concrete chimney increases from top to bottom, construction platform 1 should be radially varied within a suitable spatial range for the construction of platforms 1, 2, 3, and 4, and a widened platform should be installed.

[0048] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A supplementary hoisting work platform for a chimney steel platform installation construction, characterized by, Includes the construction platform (1) and the hoisting system; The construction platform (1) includes a platform body (101) and a fence (102) surrounding the edge of the platform body (101). The platform body (101) has a hoisting hole (2) in the middle and multiple hoisting points. Multiple embedded hanging parts (3) are provided on the top of the outer wall of the chimney. The hoisting points can be connected to the embedded hanging parts (3) or to the main beam of each layer of steel platform by a suspension cable (24) for suspending the construction platform (1) inside the chimney. The hoisting system includes winches (4), hoisting ropes (5), first guide wheels (6), second guide wheels (7), third guide wheels (8), embedded fixing parts (9), and hoisting pulleys (10). Two winches (4) are arranged side-by-side on the ground outside the bottom of the chimney. Each winch (4) is equipped with a hoisting rope (5). Two first guide wheels (6) are located outside the bottom of the chimney. Two second guide wheels (7) are located at the top of the chimney and above the first guide wheels (6). Two third guide wheels (8) are located... The top of the chimney is located on both sides of the second guide wheel (7). The pre-embedded fixing part (9) is located between the second guide wheel (7) and the third guide wheel (8). The free end of the hoisting cable (5) passes around the first guide wheel (6), the second guide wheel (7) and the third guide wheel (8) in sequence and is fixed with the pre-embedded fixing part (9). The hoisting pulley (10) is installed on the hoisting cable (5) between the third guide wheel (8) and the pre-embedded fixing part (9). The hoisting pulley (10) can naturally pass through the hoisting hole (2).

2. The auxiliary hoisting work platform for chimney steel platform installation construction according to claim 1, characterized in that, The winch (4) and the first guide wheel (6) are located on the same side of the chimney, and the line connecting the third guide wheel (8) on one side and the pre-embedded fixing part (9) on the other side is parallel to the line connecting the third guide wheel (8) on the other side and the pre-embedded fixing part (9).

3. The auxiliary hoisting work platform for installation of a chimney steel platform construction according to claim 2, characterized in that, The two second guide wheels (7) are fixed on the same support (11). A steel plate (12) is pre-embedded at the top of the chimney. A support beam (13) is welded to the outside of the steel plate (12). The support (11) is fixed to the top of the support beam (13). A diagonal brace (14) is provided between the support (11) and the support beam (13).

4. The auxiliary hoisting work platform for installation of a chimney steel platform construction according to claim 3, characterized in that, The platform body (101) is provided with a basket hole (15), which is located outside the hoisting hole (2) and is used for the passage of the construction basket.

5. The auxiliary hoisting platform for chimney steel platform installation construction according to claim 4, characterized in that, The lifting points include a first lifting point (16) and a second lifting point (17). Multiple first lifting points (16) are set on the edge of the platform body (101) and are corresponding to the pre-embedded suspension component (3). The first lifting points (16) are connected to the pre-embedded suspension component (3) through the suspension cable (24). The second lifting points (17) are set on the edge of the lifting hole (2) and are used to connect with the lifting pulley (10).

6. The auxiliary hoisting work platform for installation of a chimney steel platform construction according to claim 5, characterized in that, The platform body (101) is spaced apart from the inner wall of the chimney, and a plurality of wall wheels are provided on the outer side of the platform body (101), which roll on the inner wall of the chimney.

7. The auxiliary hoisting work platform for installation of a chimney steel platform construction according to claim 6, characterized in that, The platform body (101) includes a main frame, a secondary frame, a grid-shaped platform and a platform plate. The main frame is located at the edge of the platform body (101), the edge of the hoisting hole (2) and the edge of the basket hole (15). The secondary frame and the grid-shaped platform are located inside the main frame, and the platform plate is laid on top of the secondary frame.

8. The auxiliary hoisting work platform for installation of a chimney steel platform construction according to claim 7, characterized in that, The pre-embedded suspension component (3) includes a pre-embedded suspension steel bar (301), which is fitted with an outer sleeve (302). The lower part of the pre-embedded suspension steel bar (301) and the outer sleeve (302) are pre-embedded in the top wall of the chimney, and the upper part protrudes from the top wall of the chimney. The upper end of the suspension cable (24) is connected to the outer sleeve (302) through an arc-shaped buckle (18).

9. The auxiliary hoisting work platform for installation of a chimney steel platform construction according to claim 8, characterized in that, A widened platform is provided on the outside of the main body of the platform (101).

10. The auxiliary hoisting work platform for installation of a chimney steel platform construction according to claim 9, characterized in that, The widened platform includes a widened sleeve, a widened pipe (19), an edge bar (20), a guardrail, and scaffold boards. Multiple widened sleeves are arranged in a ring array inside the bottom edge of the platform body (101). One end of the widened pipe (19) is inserted into the widened sleeve, and the other end extends to the outside of the platform body (101). The edge bar (20) is arranged between the outer ends of adjacent widened pipes (19). The guardrail is arranged at the top of the outer end of the widened pipe (19). The scaffold boards are laid on the widened pipe (19).

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