A tie rod bolt-disc system with protruding ribs

Abstract

This invention relates to a tie rod bolt-disc system with a protruding rib structure, comprising multiple discs, tie rod bolts, a first nut, and a second nut. Each disc has multiple mounting holes along its circumference, and mounting grooves are provided on the circumferential surface of each mounting hole. Tie rod bolts are sequentially inserted into the mounting holes of the multiple discs to connect them in series. Each tie rod bolt includes a first threaded section, a second threaded section, multiple mounting sections, and multiple connecting sections. Each mounting section includes a connected column and a protruding rib. The protruding rib is located on the circumferential surface of the column, the column fits into the mounting hole, and the protruding rib fits into the mounting groove. The tie rod bolt-disc system of this invention increases the contact area between the mounting section and the disc, improves the connection strength between the tie rod bolt and the disc, enhances the rigidity of the tie rod bolt-disc system, slows down the creep relaxation rate between the tie rod bolt and the disc, and improves the safety of the tie rod bolt-disc system during use, thereby improving the operational safety of rotating machinery.

Description

Technical Field

[0001] This invention relates to the field of tie rod bolt technology, and in particular to a tie rod bolt-disc system with a protruding rib structure. Background Technology

[0002] The tie rod bolt-wheel system is one of the core components of modern rotating machinery. Its structural strength directly determines the operational safety of the entire machine. During operation, the tie rod bolt-wheel system is subjected to a long-term working environment of high temperature, high pressure, and high speed. Creep loosening can easily occur between the tie rod bolt and the wheel, endangering the operational safety of the rotating machinery. Summary of the Invention

[0003] This invention aims to at least partially solve one of the technical problems in related technologies. To this end, embodiments of this invention propose a tie rod bolt-disc system with a protruding rib structure, which increases the contact area between the assembly section and the disc, improves the connection strength between the tie rod bolt and the disc, enhances the stiffness of the tie rod bolt-disc system, slows down the creep relaxation rate between the tie rod bolt and the disc, and improves the safety of the tie rod bolt-disc system during use, thereby improving the operational safety of rotating machinery.

[0004] The tie rod bolt-wheel system with protruding ribs in this embodiment of the invention includes:

[0005] Multiple wheel disks, each wheel disk having multiple mounting holes along its circumference, each wheel disk having mounting grooves on the circumferential surface of the mounting holes, each of the mounting grooves and mounting holes extending along the axial direction of the wheel disk, and the multiple wheel disks being arranged along the axial direction of the wheel disk;

[0006] A tie rod bolt, which is sequentially inserted into the mounting holes of a plurality of the wheel discs to connect the plurality of wheel discs in series, the tie rod bolt includes a first threaded segment, a second threaded segment, a plurality of mounting segments, and a plurality of connecting segments. The first threaded segment and the second threaded segment are located at both ends of the tie rod bolt in its extension direction. The mounting segment includes a connected column and a protruding rib, the protruding rib being located on the circumferential surface of the column. Each of the following: between the first threaded segment and the connecting segment, between two adjacent connecting segments, and between the connecting segment and the second threaded segment constitutes the column of the mounting segment. The column fits into the mounting hole, and the protruding rib fits into the mounting groove; and

[0007] A first nut and a second nut, wherein the first nut is fitted onto the first threaded section and the second nut is fitted onto the second threaded section.

[0008] The tie rod bolt-wheel system with protruding ribs in this embodiment of the invention increases the contact area between the assembly section and the wheel, improves the connection strength between the tie rod bolt and the wheel, helps to improve the rigidity of the tie rod bolt-wheel system, slows down the creep relaxation rate between the tie rod bolt and the wheel, and improves the safety of the tie rod bolt-wheel system during use, thereby improving the operational safety of rotating machinery.

[0009] In some embodiments, the number of protruding ribs in the assembly section is multiple, and the multiple protruding ribs are distributed at equal intervals in the circumferential direction.

[0010] In some embodiments, at least a portion of the protruding rib of one of two adjacent assembly sections is offset from the protruding rib of the other in the axial direction of the tie rod bolt.

[0011] In some embodiments, one of two adjacent assembly segments is connected to the connecting segment located between the two adjacent assembly segments by welding.

[0012] In some embodiments, the angle between the protruding rib of one of two adjacent assembly sections and the protruding rib of the other is α, where α = 360° / 2n, and n is the number of protruding ribs on the assembly section.

[0013] In some embodiments, the diameter of the column is larger than the diameter of the connecting segment.

[0014] In some embodiments, the protruding rib includes a first portion and a second portion connected together. The first portion is connected to the column at one end in the radial direction and to the second portion at the other end in the radial direction. The first portion has a first plane on one side of the column in the circumferential direction and a second plane on the other side of the column in the circumferential direction. The first plane and the second plane are parallel, and the second portion is arc-shaped.

[0015] In some embodiments, the second portion has an arc of 180°, and each of the first plane and the second plane is tangent to the second portion at the connection point.

[0016] In some embodiments, the tie rod bolt-wheel system with protruding ribs further includes:

[0017] A first washer, the first washer being fitted onto the first threaded section, the first washer being located between the first nut and the disc adjacent to the first nut; and

[0018] A second washer is fitted onto the second threaded section and is located between the second nut and the disc adjacent to the second nut.

[0019] In some embodiments, the column and the protruding rib are integrally formed. Attached Figure Description

[0020] Figure 1 This is one of the structural schematic diagrams of the tie rod bolt-wheel system with protruding ribs according to an embodiment of the present invention;

[0021] Figure 2 This is a second schematic diagram of the tie rod bolt-wheel system with protruding ribs according to an embodiment of the present invention;

[0022] Figure 3 This is a cross-sectional view of the tie rod bolt-wheel system with protruding ribs according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the wheel according to an embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the tie rod bolt according to an embodiment of the present invention;

[0025] Figure 6 This is a structural schematic diagram of the first threaded segment and the adjacent assembly segment according to an embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram showing the distribution of protruding ribs in two adjacent assembly sections according to an embodiment of the present invention.

[0027] Figure label:

[0028] Tie rod bolt-wheel system 100;

[0029] Wheel 1, mounting hole 11, mounting slot 12, first wheel 101, second wheel 102;

[0030] Tie rod bolt 2, first threaded section 21, second threaded section 22, assembly section 23, column 231, protruding rib 232, first part 2321, first plane 23211, second plane 23212, second part 2322, connecting section 24, first assembly section 2301, second assembly section 2302, first connecting section 2401, second connecting section 2402, third assembly section 2303;

[0031] First nut 3, second nut 4, first washer 5, second washer 6. Detailed Implementation

[0032] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0033] like Figures 1 to 7 As shown, the tie rod bolt-wheel system 100 with protruding rib structure in this embodiment of the invention includes multiple wheel discs 1, tie rod bolts 2, first nuts 3 and second nuts 4.

[0034] The wheel 1 has a plurality of mounting holes 11 along its circumference, and the wheel 1 has mounting grooves 12 on the circumferential surface of the mounting holes 11. Each of the mounting grooves 12 and the mounting holes 11 extends along the axial direction of the wheel 1, and the plurality of wheel 1 are arranged along the axial direction of the wheel 1.

[0035] The tie rod bolt 2 is sequentially inserted into the mounting holes 11 of multiple wheel discs 1 to connect the multiple wheel discs 1 in series. The tie rod bolt 2 includes a first threaded section 21, a second threaded section 22, multiple mounting sections 23 and multiple connecting sections 24. The first threaded section 21 and the second threaded section 22 are located at both ends of the tie rod bolt 2 in its extension direction. The mounting section 23 includes a connected column 231 and a protruding rib 232. The protruding rib 232 is located on the circumferential surface of the column 231. Each of the following is a column 231 of the mounting section 23: between the first threaded section 21 and the connecting section 24, between two adjacent connecting sections 24, and between the connecting section 24 and the second threaded section 22. The column 231 fits in the mounting hole 11, and the protruding rib 232 fits in the mounting groove 12.

[0036] The first nut 3 is fitted onto the first threaded section 21, and the second nut 4 is fitted onto the second threaded section 22. The first nut 3 and the second nut 4 fix the tie rod bolt 2 and multiple wheel discs 1.

[0037] In this embodiment of the invention, the tie rod bolt-wheel system 100 with a protruding rib structure has a tie rod bolt 2 connected in series with multiple wheel discs 1. Multiple assembly sections 23 of the tie rod bolt 2 are radially opposite to the multiple wheel discs 1. The column 231 of the assembly section 23 fits into the assembly hole 11 of the wheel disc 1, and the protruding rib 232 of the assembly section 23 fits into the assembly groove 12 of the wheel disc 1. Compared with the connection method in related technologies where the column of the tie rod bolt passes through the wheel disc, this increases the contact area between the assembly section 23 and the wheel disc 1, improves the connection strength between the tie rod bolt 2 and the wheel disc 1, helps to improve the rigidity of the tie rod bolt-wheel system 100, slows down the creep relaxation rate between the tie rod bolt 2 and the wheel disc 1, and improves the safety of the tie rod bolt-wheel system 100 during use, thereby improving the operational safety of rotating machinery.

[0038] To make the scheme of this application easier to understand, we will take the example where the axis of the wheel 1 is the same as the vertical direction, as shown in the example where the vertical direction is as follows: Figures 1 to 3 , Figure 5 and Figure 6 As shown.

[0039] The tie rod bolt-wheel system 100 of this invention includes multiple wheel discs 1, tie rod bolts 2, first nuts 3, second nuts 4, first washers 5, and second washers 6.

[0040] The wheel 1 has a plurality of mounting holes 11 along its circumference. The wheel 1 also has mounting grooves 12 on the circumferential surface of the mounting holes 11. Each of the mounting grooves 12 and mounting holes 11 extends axially along the wheel 1. The plurality of wheel 1s are arranged axially, with adjacent wheel 1s abutting each other. The mounting holes 11 of the plurality of wheel 1s correspond axially to allow tie rod bolts 2 to pass through the corresponding mounting holes 11 of the plurality of wheel 1s.

[0041] The tie rod bolt 2 is sequentially inserted into the assembly holes 11 of multiple wheel discs 1 to connect the multiple wheel discs 1 in series. The tie rod bolt 2 includes a first threaded section 21, a second threaded section 22, multiple assembly sections 23 and multiple connecting sections 24. The first threaded section 21 and the second threaded section 22 are located at both ends of the tie rod bolt 2 in its extension direction. The assembly section 23 includes a connected column 231 and a protruding rib 232. The protruding rib 232 is located on the circumferential surface of the column 231. Each of the following is a column 231 of the assembly section 23: between the first threaded section 21 and the connecting section 24, between two adjacent connecting sections 24, and between the connecting section 24 and the second threaded section 22. Multiple assembly sections 23 are spaced apart in the axial direction of the tie rod bolt 2. The column 231 fits in the assembly hole 11, and the protruding rib 232 fits in the assembly groove 12.

[0042] The protruding rib 323 engages with the mounting groove 12, providing a certain contact area. Compared to the connection method in related technologies where the rod bolt's column section passes through the wheel disc 1, the rod bolt-wheel disc system 100 of this embodiment increases the contact area between the rod bolt 2 and the wheel disc 1 through the engagement of the protruding rib 323 with the mounting groove 12 of the wheel disc 1. Furthermore, when the rod bolt-wheel disc system 100 rotates at high speed, the contact between the protruding rib 323 and the mounting groove 12 can transmit the force between the rod bolt 2 and the wheel disc 1, increasing the integrity between the rod bolt 2 and the wheel disc 1, improving the connection strength between the rod bolt 2 and the wheel disc 1, and thus improving the rigidity of the rod bolt-wheel disc system 100 and slowing down the creep relaxation rate of the rod bolt 2 and the wheel disc 1.

[0043] Furthermore, the assembly section 23 has multiple protruding ribs 232, which are evenly spaced circumferentially. Correspondingly, the assembly slots 12 connected to the assembly hole 11 are multiple, which are evenly spaced circumferentially around the assembly hole 11. The multiple protruding ribs 323 of the assembly section 23 further increase the contact area between the assembly section 23 of the tie rod bolt 2 and the wheel 1, thereby further improving the connection strength between the tie rod bolt 2 and the wheel 1, further improving the stiffness of the tie rod bolt-wheel 100, and further slowing down the creep relaxation rate of the tie rod bolt 2 and the wheel 1.

[0044] Furthermore, the column 231 and the protruding rib 232 are integrally formed to ensure the connection strength between the column 231 and the protruding rib 232. At the same time, the integral forming of the column 231 and the protruding rib 232 also facilitates the processing and manufacturing of the assembly section 232.

[0045] Furthermore, at least a portion of the protruding rib 232 of one of two adjacent assembly sections 23 is offset from the protruding rib 232 of the other in the axial direction of the tie rod bolt 2. That is, at least a portion of the protruding rib 232 of one of the two adjacent assembly sections 23 is not opposite to the protruding rib 232 of the other in the axial direction of the tie rod bolt 2. Accordingly, the assembly slots 12 of two adjacent wheel discs 1 that mate with the same tie rod bolt 2 are offset in the axial direction of the tie rod bolt 2 (which is also the axial direction of the wheel disc 1). This increases the difficulty of the tie rod bolt 2 slipping off the wheel 2 when it is assembled with multiple wheel discs 1, which helps prevent axial displacement between the tie rod bolt 1 and the wheel disc 2. This ensures the fit between the column 231 and protruding rib 232 of the assembly section 23 and the wheel disc 1, as well as the contact area between the assembly section 23 and the wheel disc 1. It also ensures the connection strength between the tie rod bolt 2 and the wheel disc 1, thereby improving the rigidity of the tie rod bolt-wheel disc system 100, slowing down the creep relaxation rate between the tie rod bolt 2 and the wheel disc 1, and improving the safety of the tie rod bolt-wheel disc system 100 during use, thus enhancing the operational safety of rotating machinery.

[0046] In some embodiments, one of two adjacent assembly sections 23 is welded to a connecting section 24 located between the two adjacent assembly sections 23. See also Figure 2 and Figure 5As shown, assembly section 23 and connecting section 24 above it are integrally formed. For ease of description, the bottommost wheel 1 is referred to as the first wheel 101, the bottommost assembly section as the first assembly section 2301, and the bottommost connecting section as the first connecting section 2401. Multiple wheel 101, assembly sections, and connecting sections are described in ascending order. During the assembly of tie rod bolts 2 and multiple wheel 1s, the assembly holes and grooves of the first wheel 101 are aligned with the column and protruding rib of the first assembly section 2301, respectively. The first assembly section of the first wheel 101 and multiple tie rod bolts 2 are then installed. 2301, then weld the second assembly section 2302 to the first connecting section 2401, so that the second assembly section 2302 is above the first assembly section 2301. Then, align the assembly holes and assembly slots of the second wheel 102 with the column and protruding rib of the second assembly section 2302 respectively, and install the second wheel 102 and the second assembly section 2302 of multiple tie rod bolts 2. Then, weld the third assembly section 2303 to the second connecting section 2402. Follow this step to assemble the assembly sections of multiple wheel 102 and multiple tie rod bolts in sequence, and complete the assembly of multiple tie rod bolts and multiple wheel 102.

[0047] Furthermore, the diameter of the column 231 is larger than the diameter of the connecting section 24. Correspondingly, the diameter of the assembly hole 11 on the wheel 1 is larger than the diameter of the connecting section 24, thereby avoiding the weld formed by welding the column 231 and the connecting section 24 from having an adverse effect on the assembly of the column 231 and the assembly hole 11.

[0048] In some embodiments, the angle between the protruding ribs 232 of one of two adjacent assembly sections 23 and the protruding ribs 232 of the other is α, where α = 360° / 2n, and n is the number of protruding ribs 232 on the assembly section 23.

[0049] like Figure 6 and Figure 7 As shown, the number of protruding ribs 232 is six, and α is 30°. In some other embodiments, the number of protruding ribs 232 is four or eight.

[0050] Furthermore, the protruding rib 232 includes a first portion 2321 and a second portion 2322 connected together. One end of the first portion 2321 is connected to the column 231 in the radial direction, and the other end of the first portion 2321 is connected to the second portion 2322 in the radial direction. The first portion 2321 has a first plane 23211 on one side of the column 231 in the circumferential direction, and a second plane 23212 on the other side of the column 231 in the circumferential direction. The first plane 23211 and the second plane 23212 are parallel, and the second portion 2322 is arc-shaped. The protruding rib 232 has a simple structure and is easy to manufacture, which helps to reduce the manufacturing cost of the tie rod bolt-wheel system 100.

[0051] Furthermore, the second part 2322 has an arc of 180°. Each of the first plane 23211 and the second plane 23212 is tangent to the second part 2322 at the connection point. The extension of one of the diameters of the second part 2322 coincides with the extension of one of the diameters of the column 231. The connection point between the first part 2321 and the second part 2322 is the connection point between the first plane 23211 and the second part 2322, and the connection point between the second plane 23212 and the second part 2322. Since the first plane 23211 is tangent to the arc-shaped second part 2322, and the second plane 23212 is tangent to the arc-shaped second part 2322, the connection between the first part 2321 and the second part 2322 is a smooth transition. This not only facilitates the fit between the protruding rib 232 and the mounting groove 12, but also reduces wear between the connection point of the first part 2321 and the second part 2322 and the mounting groove 12.

[0052] In some other embodiments, the connecting segment 24 includes a first segment and a second segment. The first segment is connected to one of the two adjacent assembly segments 23 by an integral molding method, and the second segment is connected to the other of the two adjacent assembly segments 23 by an integral molding method. The first segment and the second segment are connected by welding.

[0053] A first washer 5 is fitted onto the first threaded section 21, and a first nut 3 is fitted onto the first threaded section 21. The first washer 5 is located between the first nut 3 and the adjacent wheel 1. A second washer 6 is fitted onto the second threaded section 22, and a second nut 4 is fitted onto the second threaded section 22. The second washer 6 is located between the second nut 4 and the adjacent wheel 1. The first nut 3 and the second nut 4 fix the tie rod bolt 2 and the multiple wheel 1.

[0054] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0055] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0056] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0057] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0058] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0059] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A tie rod bolt-disc system with a protruding rib structure, characterized in that, include: Multiple wheel disks (1), each wheel disk (1) having multiple mounting holes (11) along its circumference, each wheel disk (1) having mounting grooves (12) on the circumferential surface of the mounting holes (11), each of the mounting grooves (12) and the mounting holes (11) extending along the axial direction of the wheel disk (1), the multiple wheel disks (1) being arranged along the axial direction of the wheel disk (1); A tie rod bolt (2) is sequentially inserted into the mounting holes (11) of a plurality of wheel discs (1) to connect the plurality of wheel discs (1) in series. The tie rod bolt (2) includes a first threaded section (21), a second threaded section (22), a plurality of mounting sections (23), and a plurality of connecting sections (24). The first threaded section (21) and the second threaded section (22) are located at both ends of the tie rod bolt (2) in its extension direction. The mounting section (23) includes a connected column (231) and a protruding rib (232). The protruding rib (232) is located on the circumferential surface of the column (231). The first threaded section (21) and the connecting section (24) are connected to each other. 4) Each of the following is the column (231) of the assembly section (23): between two adjacent connecting sections (24) and between the connecting section (24) and the second threaded section (22). The column (231) fits in the assembly hole (11), and the protruding rib (232) fits in the assembly groove (12). The number of protruding ribs (232) of the assembly section (23) is multiple. The multiple protruding ribs (232) are distributed circumferentially at equal intervals. At least a portion of the protruding rib (232) of one of the two adjacent assembly sections (23) is offset from the protruding rib (232) of the other in the axial direction of the tie rod bolt (2). and The first nut (3) and the second nut (4) are fitted on the first threaded section (21) and the second nut (4) is fitted on the second threaded section (22).

2. The tie rod bolt-wheel system with protruding ribs according to claim 1, characterized in that, One of the two adjacent assembly sections (23) is connected to the connecting section located between the two adjacent assembly sections (23) by welding.

3. The tie rod bolt-disc system with protruding ribs according to claim 2, characterized in that, The angle between the protruding rib (232) of one of two adjacent assembly sections (23) and the protruding rib (232) of the other is α, where α = 360° / 2n, and n is the number of protruding ribs (232) on the assembly section (23).

4. The tie rod bolt-disc system with protruding ribs according to claim 1, characterized in that, The diameter of the column (231) is larger than the diameter of the connecting segment (24).

5. The tie rod bolt-disc system with protruding ribs according to claim 1, characterized in that, The protruding rib (232) includes a first part (2321) and a second part (2322) connected together. The first part (2321) is connected to the column (231) at one end in the radial direction and to the column (231) at the other end in the radial direction. The first part (2321) has a first plane (23211) on one side of the column (231) in the circumferential direction and a second plane (23212) on the other side of the column (231) in the circumferential direction. The first plane (23211) and the second plane (23212) are parallel. The second part (2322) is arc-shaped.

6. The tie rod bolt-disc system with protruding ribs according to claim 5, characterized in that, The second part (2322) has an arc of 180°, and each of the first plane (23211) and the second plane (23212) is tangent to the second part (2322) at the connection.

7. The tie rod bolt-disc system with protruding ribs according to claim 1, characterized in that, Further includes: The first washer (5) is sleeved on the first threaded section (21) and the first washer (5) is located between the first nut (3) and the wheel (1) adjacent to the first nut (3); and The second washer (6) is fitted onto the second threaded section (22) and is located between the second nut (4) and the disc (1) adjacent to the second nut (4).

8. The tie rod bolt-disc system with protruding ribs according to claim 1, characterized in that, The column (231) and the protruding rib (232) are integrally formed.

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