Hoisting equipment for installing boiler steel frame
By designing offset and buffer components, the problems of limited flexibility of hoisting equipment in small spaces and easy swaying of steel frames are solved, enabling flexible hoisting and safe lifting of boiler steel frames.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-21
- Publication Date
- 2026-04-07
AI Technical Summary
Existing hoisting equipment has limited space and flexibility when moving boiler steel frames, making it difficult to change hoisting points at different locations. Furthermore, the steel frame is prone to swaying and collisions during the lifting process.
The design incorporates offset and buffer components. The offset component enables flexible offset of the wire rope through an electric push rod and a rotating short shaft, while the buffer component uses buffer posts and springs to slow down the swaying of the steel frame and prevent collisions.
It improves the flexibility of hoisting equipment in confined spaces, allows for rapid adjustment of hoisting points at different locations, reduces swaying during steel frame lifting, and ensures safety.
Smart Images
Figure CN224091520U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a hoisting technology field for boiler steel frame installation, and concretely relates to a hoisting equipment for boiler steel frame installation. BACKGROUND
[0002] In the process of boiler installation needs to utilize steel frame to assist, to guarantee the stability of boiler, and the movement of steel frame needs hoisting equipment to cooperate.
[0003] Through the retrieval, the door type steel frame structure hoisting device of the utility model discloses a door type steel frame structure hoisting device, wherein the hollow crossbeam of the door type steel frame structure hoisting device is provided with the inner lining beam of sliding connection at both ends, and the inner lining beam is fixedly installed with the mounting seat at the opposite end, and the bottom of the mounting seat is installed with the anti-swing assembly, and the adjusting assembly is installed on the side of the hollow crossbeam, and the spacing between the two inner lining beams in the hollow crossbeam is adjusted through the adjusting assembly, and the two sides of the cavity wall of the hollow crossbeam are provided with the convex bead of integral molding, and the two sides of the inner lining beam are provided with the recess of sliding connection, and the convex bead is inserted into the recess of the inner lining beam and is connected with the recess of sliding connection.
[0004] The above-mentioned patent still has some deficiencies in actual use, and the existing technology has a smaller space for moving when moving the boiler steel frame by using the hoisting equipment, so that the space range of the hoisting equipment is smaller, and the steel frame can only be moved in the predetermined range and track, which limits the flexibility of the hoisting equipment, and it is inconvenient to replace the hoisting points of the steel frame at different positions, and the steel frame at the offset position is easy to swing during the lifting process, which causes the steel frame to collide with the boiler.
[0005] Therefore, the utility model discloses a kind of hoisting equipment for boiler steel frame installation. UTILITY MODEL CONTENTS
[0006] To solve the problem of the prior art in the background art that the space available for movement is small when the hoisting device is used to move the boiler steel frame, the space available for operation of the hoisting device is small, the steel frame can only be moved in a predetermined range and track, the operation flexibility of the hoisting device is limited, the replacement of the hoisting point at different positions of the steel frame is inconvenient, and the steel frame at the offset position is prone to swinging during the lifting process, which causes the steel frame to easily collide with the boiler. The utility provides a kind of boiler steel frame installation hoisting device, it includes main hoist arm, the acting end of main hoist arm is installed with pulley block, the main hoist arm is installed with wire rope through pulley block, the main hoist arm is installed with offset component, characterized by: the offset component contains rotating short shaft, the bottom inclined surface of the main hoist arm is installed with rotating short shaft through rotating seat, the bottom end of the rotating short shaft is fixedly connected with connecting block, the block body of the connecting block is installed with electric push rod, the telescopic end of the electric push rod is fixedly connected with limiting sleeve, the limiting sleeve is sleeved on the outside of the cross section of the wire rope, the pulling end of the wire rope is fixedly connected with connecting cylinder, the connecting cylinder is installed with buffer assembly.
[0007] As a further improvement of the technical solution, the buffer assembly contains a buffer cavity, the bottom of the connecting cylinder is provided with a buffer cavity, the inside of the buffer cavity is provided with a buffer column, the inner wall surface of the buffer cavity is connected with a buffer spring at the upper and lower positions, the end of each buffer spring is connected to the buffer column, and the buffer spring cooperates with the damper.
[0008] As a further improvement of the technical solution, the buffer spring does not deform when it is not in operation, and at this time the center axis of the buffer column coincides with the center axis of the connecting cylinder, the horizontal plane of the top end surface of the buffer column is lower than the horizontal plane of the top end surface of the inner wall of the buffer cavity, and the top of the buffer column is hung in the top of the buffer cavity by a lifting lug.
[0009] As a further improvement of the technical solution, the bottom inclined surface of the main hoist arm is fixed with a mounting bracket near the rotating short shaft by bolts, a small motor is provided in the mounting bracket, a gear is mounted on the output shaft end of the small motor, and a gear is fixedly connected around the connecting position of the shaft body bottom of the rotating short shaft and the connecting block, and the gear is engaged with the gear.
[0010] As a further improvement of the technical solution, the top end surface of the connecting cylinder is symmetrically fixed with a No. 1 fixed block, an installation hole is formed in the top of each No. 1 fixed block, a No. 2 fixed block is symmetrically fixed on the cylinder body near the bottom of the limiting sleeve, an insertion hole is formed through the block body of each No. 2 fixed block, a stretching rod can be fixedly inserted in the inside of the installation hole, a clamping groove is formed in the telescopic top end of the stretching rod, the telescopic top end of the stretching rod extends out of the insertion hole, and a clamping piece is clamped in the inside of the clamping groove.
[0011] As a further improvement to this technical solution, a hook is installed at the bottom of the buffer column, and when the tension rod is retracted to its shortest distance, the second fixing block and the first fixing block do not contact each other.
[0012] Compared with existing technologies, the beneficial effects of this utility model are:
[0013] 1. In this type of hoisting equipment for boiler steel frame installation, the structural design of the offset component enables the horizontal offset of the steel frame position during hoisting within a small space, improving the flexibility of the hoisting equipment in small spaces and simultaneously allowing for rapid adjustment of the hoisting points at different positions of the steel frame.
[0014] 2. In this type of hoisting equipment for boiler steel frame installation, the swaying amplitude of the steel frame in the offset position during the lifting process is reduced by the cooperation of the buffer component, so as to avoid the steel frame from colliding with the boiler and ensure the safety of the hoisting equipment during operation. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0016] Figure 2 This is a schematic diagram of the structure of the offset component in this utility model;
[0017] Figure 3 This is a structural diagram showing the installation location of the No. 2 fixing block in this utility model;
[0018] Figure 4 This is a cross-sectional structural diagram of the connecting cylinder of this utility model.
[0019] The meanings of the labels in the diagram are as follows:
[0020] 1. Main boom; 2. Pulley block; 3. Wire rope; 4. Connecting cylinder; 5. Rotating short shaft; 6. Connecting block; 7. Gear tooth; 8. Mounting bracket; 9. Small motor; 10. Gear; 11. Electric push rod; 12. Limiting sleeve; 13. Fixing block No. 1; 14. Mounting hole; 15. Fixing block No. 2; 16. Tension rod; 17. Locking plate; 18. Lifting buckle; 19. Buffer chamber; 20. Buffer column; 21. Buffer spring. Detailed Implementation
[0021] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0022] Therefore, this utility model provides a hoisting device for boiler steel frame installation. See [link / reference]Figures 1-3 As shown, it includes a main boom 1, a pulley block 2 installed at the working end of the main boom 1, a wire rope 3 installed on the main boom 1 through the pulley block 2, an offset assembly installed on the main boom 1, the offset assembly includes a rotating short shaft 5, the rotating short shaft 5 is installed on the bottom inclined surface of the main boom 1 through a rotating seat, a connecting block 6 is fixedly connected to the bottom end of the rotating short shaft 5, an electric push rod 11 is installed on the body of the connecting block 6, a limit sleeve 12 is fixedly connected to the telescopic end of the electric push rod 11, the limit sleeve 12 is sleeved outside the cross section of the wire rope 3, a connecting cylinder 4 is fixedly connected to the pulling end of the wire rope 3, and a buffer assembly is installed on the connecting cylinder 4. The fixed angle between the limiting sleeve 12 and the electric push rod 11 is 90 degrees. The inner cavity of the limiting sleeve 12 is a polished smooth surface, which can reduce the wear of the wire rope 3 on the limiting sleeve 12. The extension and retraction of the electric push rod 11 can control the horizontal offset radius of the limiting sleeve 12 centered on the connecting block 6, so as to meet the hoisting operation of the steel frame at different offset positions.
[0023] A mounting bracket 8 is bolted to the bottom inclined surface of the main boom 1 near the rotating short shaft 5. A small motor 9 is housed in the mounting bracket 8, and a gear 10 is mounted on the output shaft end of the small motor 9. Gear teeth 7 are equidistantly fixed around the bottom of the rotating short shaft 5 at the connection point with the connecting block 6, and these gear teeth 7 mesh with the gear 10. The gear 10 is driven by the small motor 9 and, through its engagement with the gear teeth 7, enables the horizontal rotation of the electric push rod 11 and the limiting sleeve 12, allowing the limiting sleeve 12 to meet operational requirements at different positions.
[0024] A first fixing block 13 is symmetrically fixed to the top end face of the connecting cylinder 4. Each first fixing block 13 has a mounting hole 14 on its top. A second fixing block 15 is symmetrically fixed to the bottom of the body of the limiting sleeve 12. Each second fixing block 15 has a through hole. A tension rod 16 can be fixedly inserted into the mounting hole 14. The telescopic top of the tension rod 16 has a slot. The telescopic top of the tension rod 16 extends out through the slot, and a locking piece 17 is locked inside the slot. Within the small working space, after the top of the tension rod 16 is inserted into the slot of the second fixing block 15, the vertical central axis of the connecting cylinder 4 coincides with the vertical axis of the limiting sleeve 12, and the connecting cylinder 4 and the limiting sleeve 12 form a component that offsets together, which can ensure that the limiting sleeve 12 and the connecting cylinder 4 rotate horizontally at the same time.
[0025] A hook 18 is installed at the bottom of the buffer column 20. When the tension rod 16 is retracted to its shortest distance, the second fixing block 15 and the first fixing block 13 do not contact each other. The latch at the bottom of the hook 18 can fix the steel frame.
[0026] During operation, thanks to the structural design of the offset assembly, before hoisting, the top of the tension rod 16 is stretched and extends through the insertion hole inside the second fixing block 15, and is secured in the slot of the tension rod 16 using the locking piece 17 to ensure stable operation. Then, the steel frame to be moved is fixed using the lifting buckle 18. Since the placement of the steel frame is random, it may not be directly below the hoisting equipment. In this case, the small motor 9 and gear 10 on the mounting frame 8 can be started according to the position of the steel frame. With the cooperation of the gear teeth 7, the short shaft 5 rotates and drives the connecting block 6 to rotate, so that the electric push rod 11 drives the limiting sleeve 12 to limit the wire rope 3. With the assistance and stabilization of the tension rod 16, the connecting cylinder 4 at the bottom of the wire rope 3 and the hook 18 rotate to the top of the steel frame, which facilitates the subsequent lifting of the steel frame at the designated lifting point. At the same time, under the restriction and fixation of the second fixing block 15 and the locking piece 17, the tension rod 16 extends and retracts with the lifting of the hook 18, which satisfies the effect of short-distance lifting and offset of the steel frame in a small space.
[0027] Further, see Figure 1 , Figure 4 As shown, the buffer assembly includes a buffer cavity 19, which is located at the bottom of the connecting cylinder 4. A buffer column 20 is installed inside the buffer cavity 19. Buffer springs 21 are connected to the upper and lower positions of the inner wall of the buffer cavity 19, with the end of each buffer spring 21 connected to the buffer column 20. The buffer springs 21 work in conjunction with the damper. The height of the buffer column 20 is greater than the height of the connecting cylinder 4, and the bottom of the buffer column 20 is located outside the connecting cylinder 4. When the steel frame shifts, the bottom of the buffer column 20 does not contact the bottom of the connecting cylinder 4.
[0028] When the buffer spring 21 is not in operation, it does not deform, and at this time the central axis of the buffer column 20 coincides with the central axis of the connecting cylinder 4. The horizontal plane where the top end face of the buffer column 20 is located is lower than the horizontal plane where the top end face of the inner wall of the buffer cavity 19 is located. The top of the buffer column 20 is suspended from the top of the buffer cavity 19 by a hook.
[0029] During operation, thanks to the structural design of the buffer assembly, when the position of the steel frame is offset, the offset steel frame during the lifting process will cause the buffer column 20 to offset to a certain extent. The buffer spring 21 on the buffer column 20 located in the offset direction will be compressed and generate a reaction force, while the buffer spring 21 located away from the offset direction will be stretched and generate a reaction force. With the cooperation of multi-directional reaction forces, the swing amplitude of the offset steel frame during the lifting process is reduced, preventing the steel frame from hitting the boiler due to large swing amplitude.
[0030] In summary, this effectively solves the problem that existing technologies using hoisting equipment to move boiler steel frames have limited space for movement, restricting the operating range of the hoisting equipment to a predetermined range and trajectory. This limits the operational flexibility of the hoisting equipment, makes it inconvenient to change the hoisting points at different positions of the steel frame, and causes the steel frame to swing during the lifting process, making it prone to collisions with the boiler.
[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0032] Although embodiments of the present utility have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present utility, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A hoisting device for installing a boiler steel frame, comprising a main boom (1), a pulley block (2) installed at the working end of the main boom (1), a wire rope (3) installed on the main boom (1) via the pulley block (2), and an offset assembly installed on the main boom (1), characterized in that: The offset assembly includes a rotating short shaft (5). The rotating short shaft (5) is mounted on the bottom inclined surface of the main boom (1) via a rotating seat. A connecting block (6) is fixed to the bottom end of the rotating short shaft (5). An electric push rod (11) is mounted on the body of the connecting block (6). A limiting sleeve (12) is fixed to the telescopic end of the electric push rod (11). The limiting sleeve (12) is sleeved outside the cross section of the wire rope (3). A connecting cylinder (4) is fixed to the pulling end of the wire rope (3). A buffer assembly is mounted on the connecting cylinder (4).
2. The hoisting equipment for boiler steel frame installation according to claim 1, characterized in that: The buffer assembly includes a buffer cavity (19). The bottom of the connecting cylinder (4) is provided with a buffer cavity (19). A buffer column (20) is provided inside the buffer cavity (19). Buffer springs (21) are connected to the upper and lower positions of the inner wall surface of the buffer cavity (19). The end of each buffer spring (21) is connected to the buffer column (20). The buffer springs (21) work in conjunction with the damper.
3. The hoisting equipment for boiler steel frame installation according to claim 2, characterized in that: The buffer spring (21) does not deform when it is not in operation, and at this time the central axis of the buffer column (20) coincides with the central axis of the connecting cylinder (4). The horizontal plane where the top end face of the buffer column (20) is located is lower than the horizontal plane where the top end face of the inner wall of the buffer cavity (19) is located. The top of the buffer column (20) is suspended on the top of the buffer cavity (19) by a hook.
4. The hoisting equipment for boiler steel frame installation according to claim 3, characterized in that: The bottom inclined surface of the main boom (1) is fixed with a mounting bracket (8) by bolts near the rotating short shaft (5). A small motor (9) is installed in the mounting bracket (8). A gear (10) is installed at the end of the output shaft of the small motor (9). Gear teeth (7) are fixedly connected at equal intervals around the bottom of the shaft of the rotating short shaft (5) and the connection position of the connecting block (6). The gear teeth (7) mesh with the gear (10).
5. The hoisting equipment for boiler steel frame installation according to claim 4, characterized in that: The top end face of the connecting cylinder (4) is symmetrically fixed with a first fixing block (13). Each first fixing block (13) has an installation hole (14) at its top. The cylinder body of the limiting sleeve (12) is symmetrically fixed with a second fixing block (15) near the bottom. Each second fixing block (15) has a through hole. A tension rod (16) can be fixedly inserted inside the installation hole (14). The telescopic top end of the tension rod (16) has a slot. The telescopic top end of the tension rod (16) extends out through the slot, and a locking piece (17) is locked inside the slot.
6. The hoisting equipment for boiler steel frame installation according to claim 5, characterized in that: The bottom of the buffer column (20) is equipped with a hook (18). When the tension rod (16) is retracted to the shortest distance, the second fixing block (15) and the first fixing block (13) do not contact each other.