A replaceable star wheel tooth block assembly, star wheel gear, sintering machine and roasting machine

Abstract

The utility model relates to sintering equipment technical field, concretely relates to an easy replacement star wheel tooth block assembly, star wheel gear, sintering machine and calcinator, including star wheel tooth plate and the star wheel tooth block of detachably cooperation in the tooth surface both sides of star wheel tooth plate, the lamination surface of star wheel tooth block and star wheel tooth plate is the assembly face, is equipped with the axial locating structure and radial locating structure of mutual cooperation on the assembly face, to realize the axial and radial mechanical positioning of star wheel tooth block on star wheel tooth plate, the utility model solves the technical problem that star wheel tooth plate must be integrally replaced after the tooth profile working surface wears.

Description

Technical Field

[0001] This utility model relates to the field of sintering equipment technology, specifically to an easily replaceable star wheel gear block assembly, star wheel gear, sintering machine, and calcining machine. Background Technology

[0002] In the metallurgical industry, sintering machines and roasting machines are key pretreatment equipment before iron ore smelting, and their head and tail star wheel gear plates are the core components for realizing the trolley's cyclic transmission. Currently, the head and tail star wheel gear plates of large sintering machines and roasting machines in domestic steel plants generally adopt double-tooth, triple-tooth, or integral structures. Such structures need to be installed as a whole on the flanges at both ends of the star wheel cylinder. When the toothed working surface is worn, the entire gear plate must be replaced. The entire star wheel gear plate needs to be disassembled and reassembled, and the maintenance time for a single machine can be as long as 24-48 hours. In addition, it is necessary to lift gear plates weighing 2-3 tons, which poses safety risks such as falling from height and mechanical injury. At the same time, professional personnel need to recalibrate the installation accuracy, which seriously affects production efficiency. Utility Model Content

[0003] This utility model provides an easily replaceable star wheel tooth block assembly, star wheel gear, sintering machine and roasting machine, aiming to solve the technical problem that traditional star wheel tooth plates must be replaced as a whole after the tooth working surface is worn.

[0004] The technical solution used in this utility model is as follows: The first aspect of this application proposes an easily replaceable star wheel tooth block assembly, including a star wheel tooth plate and star wheel tooth blocks detachably fitted to both sides of the tooth surface of the star wheel tooth plate; the mating surface between the star wheel tooth blocks and the star wheel tooth plate is an assembly surface, and the assembly surface is provided with mutually cooperating axial positioning structure and radial positioning structure to realize the axial and radial mechanical positioning of the star wheel tooth blocks on the star wheel tooth plate.

[0005] Furthermore, the mounting surface of the star wheel tooth block is provided with a positioning keyway, and positioning keys corresponding to the positioning keyway are provided on both sides of the tooth surface of the star wheel tooth plate; the positioning keys and positioning keyways are used for axial positioning of the star wheel tooth block.

[0006] Furthermore, a transition groove is provided on the upper side of the star wheel tooth block assembly surface, and a limiting platform corresponding to the transition groove is provided on both sides of the tooth surface of the star wheel tooth plate; the transition groove and the limiting platform cooperate to radially position the star wheel tooth block.

[0007] Furthermore, the side of the star wheel gear block is provided with a disassembly notch.

[0008] Furthermore, bolt holes are provided on the star wheel tooth block, and mounting holes corresponding to the bolt holes are provided on the mounting surface of the star wheel tooth plate and the star wheel tooth block. Mounting grooves corresponding to the mounting holes are provided on the axially perpendicular surface of the star wheel tooth block and the star wheel hub, and the mounting grooves are connected to the mounting holes.

[0009] Furthermore, a nut groove is provided on the axially perpendicular surface of the star wheel tooth block and the star wheel hub. The nut groove is connected to the assembly groove, and a nut assembly is installed in the nut groove. The nut assembly includes a main connecting plate corresponding to the nut groove and a split connecting plate integrally formed from the main connecting plate. The split connecting plate corresponds to the assembly groove and can be inserted into the assembly groove. Nut holes corresponding to the assembly holes are opened on the split connecting plate.

[0010] Furthermore, the star wheel tooth block adopts an integral molding structure, is made of 42CrMo material, and undergoes surface heat treatment; the star wheel tooth plate can adopt a double-linked, multi-linked, or full-circle structure, and is made of 50Mn2 material.

[0011] The second aspect of this application provides a star gear, including the replaceable star gear block assembly of the above embodiment, and also includes a star gear cylinder and flanges respectively disposed at both ends of the star gear cylinder, wherein the tooth roots of the star gear plate are fixed to the flanges.

[0012] A third aspect of this application provides a sintering machine, characterized in that it includes the replaceable star wheel gear block assembly of the above embodiments, or includes the star wheel gear of the above embodiments.

[0013] The fourth aspect of this application provides a roasting machine that includes the replaceable star gear block assembly of the above embodiments, or includes the star gear of the above embodiments.

[0014] The beneficial effects achieved by this utility model are as follows: When the contact surface of the star wheel tooth block wears out after long-term working, only a single star wheel tooth block needs to be replaced, which extends the service life, greatly improves economic efficiency, shortens maintenance time and reduces the workload of personnel. The original requirement to completely disassemble the star wheel tooth plate has been changed to replacing the star wheel tooth block as needed. Simultaneously, this application adds a positioning keyway and a transition groove to the planar assembly, achieving axial and radial mechanical positioning respectively. Alignment is guided by the positioning key, eliminating the need for calibration and improving assembly efficiency. Simple bolt fixing leads to concentrated stress and easy fatigue fracture; this application further increases the service life by distributing the bolt load through the positioning key and limiting platform. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the easily replaceable star wheel gear block assembly of this utility model.

[0016] Figure 2 This is a schematic diagram of the mating of the star wheel tooth plate and star wheel tooth block of this utility model.

[0017] Figure 3 This is a schematic diagram of the star wheel tooth block structure of this utility model. Figure 1 .

[0018] Figure 4 This is a schematic diagram of the star wheel tooth block structure of this utility model. Figure 2 .

[0019] Figure 5 This is a schematic diagram of the nut assembly structure of this utility model.

[0020] Figure 6 This is a schematic diagram of the star wheel toothed plate structure of this utility model.

[0021] Figure 7 This is a schematic diagram of the star gear structure of this utility model.

[0022] In the diagram, 1. Star wheel tooth plate; 2. Star wheel tooth block; 3. Positioning keyway; 4. Positioning key; 5. Transition groove; 6. Limiting platform; 7. Disassembly notch; 8. Bolt hole; 9. Assembly hole; 10. Assembly groove; 11. Nut slot; 12. Main connecting plate; 13. Split connecting plate; 14. Nut hole; 15. Star wheel cylinder; 16. Flange. Detailed Implementation

[0023] To facilitate understanding of this utility model by those skilled in the art, the specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0024] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation", "connection", and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through the specific circumstances.

[0025] like Figure 1-2 As shown, this utility model provides an easily replaceable star wheel tooth block 2 assembly, including a star wheel tooth plate 1 and a star wheel tooth block 2. The star wheel tooth block 2 is detachably fitted to both sides of the tooth surface of the star wheel tooth plate 1. One side of the star wheel tooth block 2 is a mounting surface with the star wheel tooth plate 1, and the other side of the star wheel tooth block 2 is a contact surface that contacts the trolley. The mounting surface of the star wheel tooth block 2 is provided with a positioning keyway 3 (the positioning keyway 3 can be a rectangular keyway). Positioning keys 4 corresponding to the positioning keyway 3 are provided on both sides of the tooth surface of the star wheel tooth plate 1. The positioning keys 4 and the positioning keyway 3 are used for axial positioning of the star wheel tooth block 2. A transition groove 5 is opened on the upper side of the mounting surface of the star wheel tooth block 2, and a limiting platform 6 corresponding to the transition groove 5 is provided on both sides of the tooth surface of the star wheel tooth plate 1. The transition groove 5 and the limiting platform 6 cooperate to radially position the star wheel tooth block 2.

[0026] With the maturity and improvement of modern CNC machining technology, the machining accuracy of individual star wheel gear blocks 2 is high, and each star wheel gear block 2 is interchangeable. When the contact surface of the star wheel gear block 2 wears out after long-term working, only the individual star wheel gear block 2 needs to be replaced, which extends the service life, greatly improves economic efficiency, shortens maintenance time and reduces the workload of personnel. The original requirement to completely disassemble the star wheel gear plate 1 has been changed to replacing the star wheel gear block 2 as needed. At the same time, this application adds a positioning keyway 3 and a transition groove 5 to the planar assembly to achieve axial and radial mechanical positioning, respectively. The positioning key 4 guides the alignment, eliminating the need for calibration and improving assembly efficiency. Simple bolt fixing is prone to fatigue fracture due to concentrated stress. This application further increases the service life by distributing the bolt load through the positioning key 4 and the limiting platform 6.

[0027] Considering that the star wheel tooth block 2 is tightly assembled with the star wheel tooth plate 1 when it is replaced, making it inconvenient to remove, the side of the star wheel tooth block 2 is provided with a disassembly notch 7. After removing the locking parts that fix the star wheel tooth block 2 to the star wheel tooth plate 1, the disassembly notch 7 is tapped with tools such as hammers and awls to help knock off the star wheel tooth block 2.

[0028] The star wheel tooth block 2 is detachably fitted to both sides of the tooth surface of the star wheel tooth plate 1 by bolts; such as Figure 3-4 As shown, the star wheel tooth block 2 has four stepped bolt holes 8 on the upper part of both sides in the axial direction of the star wheel hub. The mounting surface of the star wheel tooth plate 1 and the star wheel tooth block 2 has mounting holes 9 corresponding to the bolt holes 8. The mounting groove 10 corresponding to the mounting holes 9 is provided on the axial vertical surface of the star wheel tooth block 2 and the star wheel hub. The mounting groove 10 is connected to the mounting holes 9. A locking nut is provided in the mounting groove 10.

[0029] Under the constraint of the positioning keyway 3 and the transition groove 5, the star wheel tooth block 2 achieves axial and radial positioning; the bolt hole 8 and the assembly hole 9 are coaxial, and the high-strength bolt passes through the bolt hole 8 and the assembly hole 9, and is fastened with the lock nut in the assembly groove 10; the star wheel tooth block 2 is fastened to both sides of the tooth surface of the star wheel tooth plate 1.

[0030] When the lock nut is placed in the assembly slot 10 and the high-strength bolt is installed by passing through the bolt hole 8 and the assembly slot 10, it is inconvenient to align the lock nut with the high-strength bolt. Figure 5 As shown, the star wheel tooth block 2 has a rectangular cross-section nut groove 11 on the axially perpendicular surface of the star wheel hub. The nut groove 11 is connected to the assembly groove 10. A nut assembly is installed in the nut groove 11. The nut assembly includes a main connecting plate 12 corresponding to the nut groove 11 and a split connecting plate 13 integrally formed with the main connecting plate 12. The split connecting plate 13 corresponds to the assembly groove 10 and can be inserted into the assembly groove 10. A nut hole 14 corresponding to the assembly hole 9 is opened on the split connecting plate 13.

[0031] The locking nut originally installed in the assembly slot 10 was inconvenient to align with the high-strength bolt during installation. Therefore, it was optimized by opening a rectangular cross-section nut slot 11 on the axially perpendicular surface of the star wheel tooth block 2 and the star wheel hub. The nut slot 11 is connected to the assembly slot 10. In the nut assembly installed inside, the main connecting plate 12 is adapted to the nut slot 11, and the split connecting plate 13 corresponds to the assembly slot 10 and can be inserted into the assembly slot 10. The nut hole 14 opened on the split connecting plate 13 corresponds to the assembly hole 9, thereby solving the problem of bolt and nut alignment.

[0032] This invention improves the synchronization accuracy of both sides of the star wheel tooth plate 1 and enhances the wear resistance of the tooth surface. Because the star wheel tooth block 2 is easy to manufacture and replace, and can use better materials, its service life is increased from a maximum of five years to ten years. When used online, only the star wheel tooth block 2 needs to be replaced, and the rest of the parts do not need to be treated. In this way, the service life of the entire transmission mechanism can reach twenty years, which greatly improves economic efficiency, reduces production costs, and improves work efficiency. The star wheel tooth block 2 adopts an integral molding structure, is made of 42CrMo, and undergoes surface heat treatment. The star wheel tooth plate 1 can adopt a double-linked, multi-linked, or full-circle structure, is made of 50Mn2, and is manufactured by quenching and tempering.

[0033] like Figure 7 As shown, the second aspect of this application proposes a star gear, including the replaceable star gear block 2 assembly of the above embodiment, and also includes a star gear cylinder 15 and flanges 16 respectively disposed at both ends of the star gear cylinder 15, with the tooth root of the star gear plate 1 fixed on the flange 16.

[0034] The easily replaceable star wheel gear block 2 assembly and star wheel gear of the above embodiments can be used in sintering machines or calcining machines.

[0035] Unless otherwise specified, the above methods of fixing all use common technical means employed by industry professionals, such as welding, nesting, or threaded fixing.

[0036] The following points need to be explained: The accompanying drawings of this utility model embodiment only involve the structures involved in this utility model embodiment; other structures can refer to general designs.

[0037] For clarity, the thickness of layers or regions is enlarged or reduced in the drawings used to describe embodiments of the present invention; that is, these drawings are not drawn to actual scale. It is understood that when an element such as a layer, film, region, or substrate is referred to as being "above" or "below" another element, the element may be located "directly" above or below the other element, or there may be intermediate elements present.

[0038] Where there is no conflict, the embodiments of this utility model and the features in the embodiments can be combined with each other to obtain new embodiments.

[0039] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. The protection scope of this utility model shall be determined by the protection scope of the claims.

Claims

1. A replaceable star wheel gear block (2) assembly, characterized in that, The system includes a star gear plate (1) and star gear blocks (2) detachably fitted to both sides of the tooth surface of the star gear plate (1). The mating surface between the star gear blocks (2) and the star gear plate (1) is an assembly surface. The assembly surface is provided with axial positioning structure and radial positioning structure that cooperate with each other to realize the axial and radial mechanical positioning of the star gear blocks (2) on the star gear plate (1). The assembly surface of the star gear blocks (2) is provided with a positioning keyway (3). The tooth surfaces on both sides of the tooth surface of the star gear plate (1) are provided with positioning keys (4) corresponding to the positioning keyway (3). The positioning keys (4) and the positioning keyway (3) are used to perform axial positioning of the star gear blocks (2). A transition groove (5) is opened on the upper side of the assembly surface of the star gear blocks (2). Limiting platforms (6) corresponding to the transition groove (5) are provided on both sides of the tooth surface of the star gear plate (1). The transition groove (5) and the limiting platform (6) cooperate to perform radial positioning of the star gear blocks (2).

2. The easily replaceable star wheel gear block (2) assembly according to claim 1, characterized in that, The star wheel tooth block (2) has a disassembly notch (7) on its side.

3. The easily replaceable star wheel gear block (2) assembly according to claim 1, characterized in that, The star wheel tooth block (2) is provided with bolt holes (8), and the star wheel tooth plate (1) and the star wheel tooth block (2) are provided with assembly holes (9) corresponding to the bolt holes (8). The star wheel tooth block (2) and the star wheel hub are provided with assembly grooves (10) corresponding to the assembly holes (9) on the axially perpendicular surface. The assembly grooves (10) and the assembly holes (9) are connected.

4. The easily replaceable star wheel gear block (2) assembly according to claim 3, characterized in that, The star wheel tooth block (2) is provided with a nut groove (11) on the axially perpendicular surface of the star wheel hub. The nut groove (11) is connected to the assembly groove (10). A nut assembly is installed in the nut groove (11). The nut assembly includes a main connecting plate (12) corresponding to the nut groove (11) and a split connecting plate (13) integrally formed with the main connecting plate (12). The split connecting plate (13) corresponds to the assembly groove (10) and can be inserted into the assembly groove (10). A nut hole (14) corresponding to the assembly hole (9) is opened on the split connecting plate (13).

5. The easily replaceable star wheel gear block (2) assembly according to claim 1, characterized in that, The star wheel tooth block (2) adopts an integral molding structure, is made of 42CrMo, and has a surface heat treatment; the star wheel tooth plate (1) can adopt a double-link, multi-link, or full-circle structure, and is made of 50Mn2.

6. A star gear, characterized in that, The assembly includes the replaceable star wheel tooth block (2) as described in claim 1, and also includes a star wheel cylinder (15) and flanges (16) respectively disposed at both ends of the star wheel cylinder (15), with the tooth roots of the star wheel tooth plate (1) fixed on the flanges (16).

7. A sintering machine, characterized in that, Includes the replaceable star gear block (2) assembly as described in any one of claims 1-5, or includes the star gear as described in claim 6.

8. A roasting machine, characterized in that, Includes the replaceable star gear block (2) assembly as described in any one of claims 1-5, or includes the star gear as described in claim 6.

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