Detachable winding drum structure for blast furnace car winding machine and winding machine thereof

Abstract

The utility model belongs to the steel smelting conveying equipment technical field, specifically disclose a kind of detachable reel structure and winch for blast furnace car winch, and the reel structure is by low alloy steel sheet coiling welding reel cylinder, reel cylinder both ends coaxially inlay annular disc connector, and detachable connection is connected with rotating shaft connection flange by the connecting assembly of bolt, lock washer and nut;Reel cylinder is equipped with spiral rope groove, and steel wire rope is fixed with cooperation multiple groups of rope pressing block, and disc connector is equipped with lightening process hole.The utility model eliminates the shrinkage cavity defect of traditional cast reel, lighter under the same strength, reduces energy consumption;Adopt detachable connection, simplify maintenance process, only replace reel when local wear, reduce maintenance cost, improve equipment operation reliability and maintenance efficiency, meet the efficient production and cost control demand of steel industry.

Description

Technical Field

[0001] This utility model belongs to the technical field of steel smelting conveying equipment, specifically relating to a detachable drum structure for a blast furnace charge car winch and the winch thereof. Background Technology

[0002] In modern steelmaking, the efficient and stable operation of the blast furnace charging system is crucial for steel production. The blast furnace charging car winch, as the core power equipment of the blast furnace charging system, undertakes the critical task of accurately and efficiently transporting the furnace charge to the receiving hopper at the top of the blast furnace. During the car's operation, the wire rope is wound around the winch drum. As the core component of the winch, the drum's structure significantly impacts the equipment's performance, cost, and maintenance.

[0003] Currently, the drums of material car winches in both domestic and international markets mostly adopt, for example... Figure 1 The diagram shows an integrally cast structure. From the perspective of casting process principles, during the casting process, the cylindrical section of the drum has a thinner wall. When the molten metal cools and solidifies, the heat dissipation rate in this thin-walled area is much faster than in other parts, leading to insufficient metal feeding and easily causing casting defects such as shrinkage cavities. These defects not only weaken the structural strength of the drum but also cause it to be scrapped during subsequent rope groove machining due to substandard quality. Furthermore, from the perspective of material properties and equipment operating mechanics, the uneven cooling rate of different parts during solidification results in uneven product mass distribution. During drum rotation, this uneven mass distribution disrupts the dynamic balance of the drum, generating significant vibration. This vibration places additional impact loads on the bearings, causing excessive wear and significantly shortening their service life. To solve this problem, a static balance test must be performed on the drum during the later assembly process. This not only increases production steps and time but also raises assembly costs and complexity.

[0004] However, with the steel industry's increasing demands for production efficiency and cost control, and the deepening of intelligent and green manufacturing concepts, traditional casting drum structures can no longer meet the industry's development needs. On the one hand, frequent drum scrapping and remanufacturing contradict the steel companies' goal of pursuing high-efficiency production; on the other hand, complex production processes and high assembly costs do not meet the requirements of cost control and green manufacturing to reduce resource waste. Therefore, it is urgent to optimize and improve the drum structure of material car winches to adapt to the new trends in industry development.

[0005] In view of this, this utility model is hereby proposed. Utility Model Content

[0006] The purpose of this utility model is to overcome the shortcomings of the prior art and provide a detachable drum structure and winch for a blast furnace charge car winch. It is mainly used to solve the problems of casting defects, uneven quality distribution, high production cost, complex assembly and inconvenient maintenance of traditional integral cast drums, thereby improving the performance of the blast furnace charge car winch, reducing costs and simplifying the maintenance process.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] On the one hand, this utility model provides a detachable drum structure for a blast furnace charge car winch, including a cylindrical drum body formed by rolling and welding steel plates. An annular disc-shaped connecting piece is coaxially embedded and fixed on the inner side of both axial ends of the drum body. The disc-shaped connecting piece is detachably connected to the connecting flange at the end of the rotating shaft of the blast furnace charge car winch through a connecting assembly.

[0009] Furthermore, the steel plate of the drum body is made of low alloy steel with a yield strength ≥345MPa.

[0010] Furthermore, the low alloy steel is Q345B steel plate, and the wall thickness of the drum body is 60-80mm.

[0011] Furthermore, the outer diameter of the disc-shaped connector is adapted to the inner diameter of the drum body, and the outer circumferential surface of the disc-shaped connector is fixedly connected to the inner wall of the drum body by welding.

[0012] Furthermore, the outer circumferential wall of the drum body is machined with a spiral groove for winding the wire rope, and the depth of the spiral groove is 0.3 to 0.35 times the diameter of the wire rope.

[0013] Furthermore, it also includes a rope pressing block, which uses fasteners to press and fix the wire rope to a preset mounting position on the outer surface of the drum.

[0014] Furthermore, there are six rope pressing blocks, arranged in three groups at intervals along the radial direction of the drum body, with each group containing two rope pressing blocks symmetrically distributed on both sides of the spiral rope groove.

[0015] Furthermore, the annular disc-shaped connector has mounting holes that correspond one-to-one with the number and position of the through holes in the connecting flange;

[0016] The connecting assembly includes a bolt, a lock washer, and a nut. After the bolt passes through the mounting hole and the through hole of the connecting flange, it is locked by the lock washer and the nut that is threadedly connected to the bolt.

[0017] Furthermore, the annular disc-shaped connector is provided with a plurality of weight-reduction process holes evenly distributed on it.

[0018] On the other hand, this utility model also provides a winch, comprising:

[0019] Drive motor;

[0020] The reducer has a double-extended shaft on both sides at its input end. One extended shaft is connected to the output shaft of the drive motor, and the other extended shaft is connected to the brake.

[0021] A rotating shaft, the input end of which is connected to the output end of the reducer, and the output end is fixed with a connecting flange;

[0022] As described above, in a detachable drum structure, the disc-shaped connector is detachably connected to the connecting flange on the output end of the rotating shaft via a connecting assembly.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The drum structure provided by this utility model uses low-alloy steel plates rolled and welded to form the drum body, fundamentally eliminating defects such as shrinkage cavities caused by uneven cooling of molten metal during the casting process. This also eliminates the problem of drum scrap due to substandard quality, significantly reducing production costs. Simultaneously, this process avoids the weakening of structural strength caused by casting defects, enabling the drum body to stably withstand the tension of wire rope winding and material cart movement (the tensile strength of low-alloy steel plates (yield strength ≥345MPa) reaches 510MPa, approximately 45% higher than castings), greatly improving equipment operational reliability. Furthermore, compared to traditional cast drums, it is lighter and has lower rotational inertia for the same strength, effectively reducing the load on the drive system and decreasing energy consumption. Most importantly, this invention achieves convenient assembly and disassembly of the drum body and the connecting flange of the rotating shaft through annular disc-shaped connectors and connecting components (bolts, washers, nuts). That is, the drum body and the connecting flange are changed to a separate detachable structure. In this way, when the drum surface is worn and needs to be replaced, it is not necessary to disassemble the entire equipment. Only the connecting components need to be disassembled to complete the drum body replacement. Compared with the traditional integral cast drum, which requires the entire machine to be replaced when a part is damaged, this greatly reduces the difficulty and cost of maintenance and significantly improves the equipment maintenance efficiency and service life. Attached Figure Description

[0025] The accompanying drawings are incorporated in and form part of this specification, and together with the description, serve to explain the principles of this invention.

[0026] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1This is a schematic diagram of the existing integrally cast material cart winch drum structure;

[0028] Figure 2 This is a schematic diagram of the detachable drum structure and connecting flange of this utility model after assembly.

[0029] in:

[0030] 1 represents the drum body; 11 represents the spiral rope groove;

[0031] 2 is a ring-shaped disc connector; 21 is a mounting hole; 22 is a weight-reduction process hole;

[0032] 3 is the connecting component; 31 is the bolt; 32 is the anti-loosening washer; 33 is the nut;

[0033] 4 is the rope-pressing block. Detailed Implementation

[0034] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this invention. Rather, they are merely examples of apparatuses consistent with some aspects of this invention as detailed in the appended claims.

[0035] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Example

[0036] Please see Figure 2 This utility model provides a detachable drum structure for a blast furnace charge car winch, comprising a cylindrical drum body 1 formed by rolling and welding steel plates. The steel plate rolling and welding process avoids defects such as shrinkage cavities caused by uneven solidification of molten metal during casting, ensuring the quality of the drum body 1 from the source. Annular disc-shaped connecting parts 2 are coaxially embedded and fixed on the inner sides of both axial ends of the drum body 1. The outer diameter of the disc-shaped connecting parts 2 matches the inner diameter of the drum body 1, and their outer circumferential surfaces are welded and fixed to the inner wall of the drum. This design not only enhances the structural strength of the ends of the drum body 1 but also provides a stable foundation for connection to the connecting flange at the end of the blast furnace charge car winch's rotating shaft. The disc-shaped connecting parts 2 and the connecting flange are detachably connected via a connecting assembly 3. This allows the drum body 1 to be removed without disassembling the entire equipment when it needs maintenance or replacement after prolonged use and wear; only the connecting assembly 3 needs to be removed, greatly reducing maintenance difficulty and time costs, and improving the maintainability of the equipment.

[0037] Specifically, in this embodiment of the invention, the drum body 1 is made of low-alloy steel with a yield strength ≥345MPa, preferably Q345B steel plate, and the wall thickness is generally set to 60-80mm to ensure that the drum body 1 has sufficient strength and rigidity to withstand the tension and pressure during the winding of the wire rope and the movement of the material cart. At the same time, compared with traditional cast drums, it can reduce its own weight and reduce the inertial force during rotation while maintaining the same strength. Preferably, reinforcing ribs can be set at intervals along the axial direction inside the drum body 1 to further improve the strength and stability of the drum body. In addition, a spiral rope groove with a depth of 0.3-0.35 times the diameter of the wire rope is machined on the outer circumferential wall of the drum body 1. This groove depth ensures that the wire rope is tightly wound to prevent slippage and reduces wear between the wire rope and the drum, thus extending the service life of both.

[0038] In this embodiment of the invention, the annular disc-shaped connector 2 has mounting holes 21 that correspond one-to-one with the number and position of the through holes in the connecting flange. Preferably, a convex-concave mating positioning structure can be provided on the annular disc-shaped connector 2 and the connecting flange. When the two are connected, the convex-concave structure engages with each other, enabling rapid initial positioning and preventing misalignment of the mounting holes during connection, thus improving assembly efficiency. Specifically, a raised positioning pin is provided on the end face of the annular disc-shaped connector 2, and a positioning hole adapted to the positioning pin is provided at the corresponding position on the connecting flange. The diameter of the positioning pin is 10-15 mm, and the length is 20-30 mm, ensuring a stable positioning effect during installation.

[0039] In addition, in this embodiment, a plurality of weight-reduction process holes 22 are evenly provided on the annular disc connector 2. The shape of the weight-reduction process holes 22 is not specifically limited in this utility model. These weight-reduction process holes 22 effectively reduce the overall weight of the drum structure without affecting the structural strength of the annular disc connector 2, further reducing the inertial force during rotation, and also saving material costs.

[0040] In this embodiment of the utility model, the connecting component 3 includes a bolt 31, an anti-loosening washer 32, and a nut 33. After the bolt 31 passes through the mounting hole 21 and the through hole of the connecting flange, it is locked by the anti-loosening washer 32 and the nut 33 threadedly connected to the bolt 31. In actual installation, the bolt 31 is made of high-strength alloy structural steel, and its nominal diameter is selected according to the size of the drum body 1 and the load-bearing requirements, generally M20 to M30. The length is the sum of the thickness of the annular disc connector 2 and the connecting flange plus 20 to 30 mm to ensure sufficient engagement length and reliable connection. The anti-loosening washer 32 is a spring washer, whose outer diameter is slightly larger than the diameter of the mounting hole 21, and whose inner diameter matches the nominal diameter of the bolt 31. After the nut 33 is tightened, the spring washer undergoes elastic deformation, generating anti-loosening friction force to prevent the nut 33 from loosening during equipment operation.

[0041] In this embodiment of the invention, the drum structure further includes rope-pressing blocks 4. The rope-pressing blocks 4 are fastened to a pre-set mounting position on the drum body 1 using fasteners. Generally, six rope-pressing blocks 4 are provided, arranged in three groups evenly spaced radially along the drum body 1. Each group includes two rope-pressing blocks 4 symmetrically distributed on both sides of the spiral rope groove. The rope-pressing blocks 4 are made of high-strength wear-resistant material, such as 45# steel that has undergone quenching treatment, achieving a surface hardness of HRC45-50. During installation, the wire rope is first placed in the spiral rope groove 11, then the rope-pressing blocks 4 are placed over the wire rope. The rope-pressing blocks 4 are then fastened to the drum body 1 using bolts and nuts. The tightening torque of the bolts is adjusted according to the specifications and tension requirements of the wire rope, generally between 80 and 120 N·m, to ensure that the rope-pressing blocks 4 firmly press down on the wire rope, preventing it from shifting or detaching from the rope groove during drum operation.

[0042] Through the above structural design and implementation methods, the detachable drum structure of this utility model significantly improves the reliability, maintainability and economy of the equipment compared with the traditional integral casting drum in practical applications, effectively meeting the usage requirements of blast furnace charge car winches in steel smelting production.

[0043] This utility model also provides a winch, which includes a drive motor, a reducer, a rotating shaft, a brake, and the aforementioned drum structure. The reducer has a double-extension shaft at its input end; one extension shaft connects to the output shaft of the drive motor, and the other extension shaft connects to the brake. The output end of the reducer connects to the input end of the rotating shaft, and a connecting flange is fixed to the output end of the rotating shaft. The disc-shaped connecting piece 2 of the drum structure is detachably connected to the connecting flange via a connecting assembly 3. In actual operation, after the drive motor starts, it transmits power to the reducer. The reducer reduces the rotational speed and increases the torque, transmitting the power to the rotating shaft. The rotating shaft drives the drum structure to rotate, causing the wire rope wound on the spiral rope groove 11 of the drum body 1 to be wound and unwound, thereby realizing the lifting and lowering movement of the blast furnace charging car. When the charging car reaches a designated position and needs to stop, the brake quickly actuates, applying braking torque to the rotating shaft to quickly stop the drum structure from rotating, ensuring precise positioning of the charging car.

[0044] During long-term use, traditional winches are prone to vibration due to casting defects in the drum, leading to frequent bearing damage. However, the winch of this invention, with its optimized drum structure, significantly reduces vibration, extends bearing life, and substantially lowers maintenance frequency and costs. Furthermore, traditional winches require complete drum replacement when localized wear occurs, resulting in prolonged downtime. The winch of this invention only requires disassembly of connecting component 3, allowing for rapid replacement of the drum body 1, greatly reducing equipment downtime and improving the production efficiency of the blast furnace charging system. In addition, the lightweight drum structure of this winch significantly reduces energy consumption compared to traditional equipment under the same production conditions, further demonstrating its advantages in energy conservation and environmental protection.

[0045] The above description is merely a specific embodiment of this utility model, enabling those skilled in the art to understand or implement it. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this utility model.

[0046] It should be understood that this utility model is not limited to the content already described above, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. A detachable drum structure for a blast furnace charge car winch, characterized in that, It includes a cylindrical drum body (1) formed by rolling and welding steel plates. An annular disc-shaped connector (2) is coaxially embedded and fixed on the inner side of both axial ends of the drum body (1). The disc-shaped connector (2) is detachably connected to the connecting flange at the end of the rotating shaft of the blast furnace car winch through a connecting assembly (3).

2. The detachable drum structure for the blast furnace charge car winch according to claim 1, characterized in that, The steel plate of the drum body (1) is made of low alloy steel with a yield strength ≥345MPa.

3. The detachable drum structure for the blast furnace charge car winch according to claim 2, characterized in that, The low alloy steel is Q345B steel plate, and the wall thickness of the drum body (1) is 60-80mm.

4. The detachable drum structure for the blast furnace charge car winch according to claim 1, characterized in that, The outer diameter of the disc-shaped connector (2) is adapted to the inner diameter of the drum body (1), and the outer circumferential surface of the disc-shaped connector (2) is fixedly connected to the inner wall of the drum body (1) by welding.

5. The detachable drum structure for the blast furnace charge car winch according to claim 1, characterized in that, The outer circumferential wall of the drum body (1) is machined with a spiral rope groove (11) for winding the wire rope, and the depth of the spiral rope groove (11) is 0.3 to 0.35 times the diameter of the wire rope.

6. The detachable drum structure for the blast furnace charge car winch according to claim 1, characterized in that, It also includes a rope pressing block (4), which uses fasteners to press and fix the wire rope to a preset mounting position on the outer surface of the drum body (1).

7. The detachable drum structure for the blast furnace charge car winch according to claim 6, characterized in that, There are six rope pressing blocks (4), arranged in three groups at radial intervals along the drum body (1), each group containing two rope pressing blocks (4) symmetrically distributed on both sides of the spiral rope groove (11).

8. The detachable drum structure for the blast furnace charge car winch according to claim 1, characterized in that, The annular disc connector (2) has mounting holes (21) that correspond one-to-one with the number and position of the connecting flange through holes. The connecting assembly (3) includes a bolt (31), a locking washer (32) and a nut (33). The bolt (31) passes through the mounting hole (21) and the through hole of the connecting flange, and is then locked by the locking washer (32) and the nut (33) which is threadedly connected to the bolt (31).

9. The detachable drum structure for the blast furnace charge car winch according to claim 1, characterized in that, The annular disc connector (2) is provided with multiple weight reduction process holes (22) evenly distributed on it.

10. A winch, characterized in that, include: Drive motor; The reducer has a double-extended shaft on both sides at its input end. One extended shaft is connected to the output shaft of the drive motor, and the other extended shaft is connected to the brake. A rotating shaft, the input end of which is connected to the output end of the reducer, and the output end is fixed with a connecting flange; The detachable drum structure as described in any one of claims 1 to 9 has a disc-shaped connector (2) that is detachably connected to a connecting flange on the output end of the rotating shaft via a connecting assembly (3).

Images