Disassembling and assembling tool and assembling method for thread ring

Abstract

The invention discloses a dismounting and mounting tool for a threaded ring and an assembling method. The dismounting and mounting tool comprises a connecting disc, a movable block and a connecting rod. The connecting disc comprises a first surface and a second surface which are oppositely arranged; a plurality of sliding grooves are formed in the first face of the connecting disc and extend in the radial direction of the connecting disc. A connecting part is coaxially arranged on the second surface of the connecting disc, the connecting part is suitable for being in butt joint with a torsion tool, and the torsion tool can drive the connecting disc to rotate through the connecting part; the movable blocks are arranged in the corresponding sliding grooves in a sliding mode, and the movable blocks and the connecting disc are located in an abutting mode through bolts. A clamping block matched with the clamping groove of the threaded ring is arranged on the movable block; the connecting rods are arranged in the radial direction of the connecting disc, and the ends of the connecting rods are in threaded connection with the connecting part. Through cooperation of the connecting disc, the movable block and the connecting rod, the threaded ring can be effectively screwed on the high-pressure inner cylinder.

Description

Technical Field

[0001] The present invention relates to the technical field of assembly, and in particular to a disassembly and assembly tool and an assembly method of a threaded ring. Background Art

[0002] A steam turbine is an externally-combustion rotary machine that converts steam thermal energy into mechanical work. Steam from the boiler enters the turbine and passes through a series of annular nozzles and moving blades, converting the steam's thermal energy into mechanical energy that rotates the turbine rotor. Steam turbines typically operate under high temperature, high pressure, and high speed conditions, making them a relatively sophisticated and heavy-duty machine.

[0003] like Figures 1 and 2 As shown, the high-pressure inner cylinder 6 of the steam turbine is a hollow structure. Several mounting holes are provided on the sidewall of the high-pressure inner cylinder 6, communicating with the inner cavity of the high-pressure inner cylinder 6. These mounting holes are used to mount the threaded ring 5. In the prior art, the inner ring of the threaded ring is smooth and lacks a suitable structure for docking with a wrench. In other words, there is no suitable tool to assist in installing the threaded ring on the sidewall of the high-pressure inner cylinder. This presents a certain degree of difficulty in installing the threaded ring on the sidewall of the high-pressure inner cylinder. Summary of the Invention

[0004] The technical problem to be solved by the present invention is that there is no suitable tool for mounting the threaded ring on the high-pressure inner cylinder.

[0005] On the one hand, the present invention discloses a threaded ring disassembly and assembly tool, which is used to install the threaded ring on a high-pressure inner cylinder; The disassembly and assembly tooling includes a connecting plate, a movable block and a connecting rod; The connecting disk includes a first surface and a second surface arranged opposite to each other; the first surface of the connecting disk is provided with a plurality of slide grooves, and the slide grooves extend along the radial direction of the connecting disk; the second surface of the connecting disk is coaxially provided with a connecting portion, and the connecting portion is suitable for docking with a torque tool, and the torque tool can drive the connecting disk to rotate through the connecting portion; The movable block is slidably arranged in the corresponding sliding groove, and the movable block is abutted and positioned with the connecting plate by a bolt; a clamping block adapted to the clamping groove of the threaded ring is provided on the movable block; The connecting rod is arranged along the radial direction of the connecting disc, and its end is threadedly connected to the connecting portion. Through the cooperation of the connecting disc, the movable block and the connecting rod, the threaded ring can be effectively tightened on the high-pressure inner cylinder.

[0006] Optionally, the movable block includes a clamping block and a slider body; The slider body extends radially along the connecting disk and is slidably connected to the slide groove; the threaded end of the bolt is threadedly connected to the slider body and abuts against the connecting disk; The clamping block is located at one end of the slider body away from the center of the connecting disk; The slider body is adapted to abut against the inner ring of the threaded ring when the clamping block and the clamping groove are engaged with each other. With the above solution, the assembly and disassembly tool can effectively drive the threaded ring to rotate.

[0007] Optionally, the end surface of the slider body away from the center of the connecting disk is an arc surface, and the arc surface is made of copper. The above solution effectively protects the inner ring of the thread ring.

[0008] Optionally, the cross section of the clamping block is triangular. The above solution is adopted to enable the clamping block to effectively drive the threaded ring to rotate.

[0009] Optionally, there are at least two chute grooves, and the plurality of chute grooves are distributed along the circumference of the connecting disk; There are at least two movable blocks, and the plurality of movable blocks are distributed along the circumference of the connecting disk. The above solution is adopted to enable the clamping blocks to effectively drive the threaded ring to rotate smoothly.

[0010] Optionally, a first threaded hole is formed in the center of the connecting plate, the first threaded hole being arranged along the axial direction of the connecting plate and extending to the outside of the connecting portion; the first threaded hole is suitable for hoisting and weight reduction. The above solution is adopted to facilitate disassembly of the tooling for hoisting.

[0011] Optionally, the cross section of the chute is T-shaped. The above solution is adopted to prevent the movable block from accidentally separating from the chute.

[0012] Optionally, the outer diameter of the connecting disk is smaller than the inner diameter of the threaded ring; The card block is placed outside the connection disk. The above solution is adopted to prevent the connection disk from interfering with the connection between the card block and the card slot.

[0013] Optionally, the connecting portion is an inner hexagonal structure or an outer hexagonal structure. The above solution is adopted to facilitate docking with a torque tool.

[0014] On the other hand, an assembly method for the above-mentioned disassembly and assembly tool is provided, which specifically includes the following steps: S1. Place the movable block of the disassembly and assembly tool on the inner ring of the threaded ring, and adjust the relative position of the movable block and the slide groove so that the clamping block is engaged with the corresponding clamping groove; S2. Place the threaded ring in the mounting hole of the high-pressure inner cylinder and rotate the disassembly and assembly tool through the connecting rod to pre-tighten the threaded ring; S3. Connect the torque tool to the connection part and tighten the threaded ring into the mounting hole of the high-pressure inner cylinder using the torque tool; Among them, a plurality of grooves are opened on the side of the threaded ring away from the inner cavity of the high-pressure inner cylinder, and the grooves are located at the inner ring edge of the threaded ring; the grooves include a bottom wall and side walls arranged on both sides of the bottom wall, and the angle between the bottom wall and the end face of the threaded ring is 120°~150°.

[0015] Due to the adoption of the above technical solution, the present invention has the following beneficial effects compared with the prior art: Through the cooperation of the connecting plate, the movable block and the connecting rod, the threaded ring can be effectively tightened on the high-pressure inner cylinder; By adjusting the relative position of the slide and the movable block, it can match threaded rings of different specifications, and can also adapt to threaded rings with special shapes of inner rings, effectively improving the adaptability; Through the cooperation between the clamping block and the clamping groove, and the abutment between the arc surface and the threaded ring, the disassembly tool will not accidentally fall off the threaded ring during the assembly process of the threaded ring, thereby improving safety performance.

[0016] The above description of the disclosed contents and the following description of the embodiments are intended to demonstrate and explain the spirit and principles of the present invention, and to provide further explanation of the scope of the patent application of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the threaded ring being installed on the high-pressure inner cylinder; Figure 2 is a schematic diagram of a threaded ring; Figure 3 Schematic diagram of disassembly tooling (1); Figure 4 Schematic diagram of disassembly tooling (2); Figure 5 is a schematic diagram of the connection plate and the connection part; Figure 6 is a schematic diagram of an activity block; Figure 7 Schematic diagram of disassembly tooling (3); Figure 8 Schematic diagram of the threaded ring and disassembly tooling.

[0019] Description of Figure Numbers: 1. Connecting plate; 11. Slide groove; 12. Lightening hole; 13. First threaded hole; 14. Second threaded hole; 2. Movable block; 21. Clamping block; 22. Slider body; 221. Arc surface; 3. Connecting rod; 4. Connecting part; 5. Threaded ring; 51. Clamping groove; 511. Bottom wall; 512. Side wall; 6. High-pressure inner cylinder. DETAILED DESCRIPTION

[0020] The following is an explanation of the embodiments of the present invention by specific specific examples. Those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. Although the description of the present invention will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this invention are limited to this embodiment. On the contrary, the purpose of introducing the invention in conjunction with the embodiment is to cover other options or modifications that may be extended based on the claims of the present invention. In order to provide a deep understanding of the present invention, the following description will contain many specific details. The present invention can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the present invention, some specific details will be omitted in the description. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0021] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the inventive product is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.

[0022] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0023] In the description of this embodiment, it should be noted that, unless otherwise expressly specified or limited, the terms "provided with," "disposed," "connected," and "connected" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this embodiment based on the specific circumstances.

[0024] On the one hand, the present application discloses a threaded ring disassembly and assembly tool for installing the threaded ring 5 on the high-pressure inner cylinder 6.

[0025] In this embodiment, please refer to Figure 1 and Figure 2 As shown, a plurality of retaining grooves 51 are provided on the side of the threaded ring 5 away from the inner cavity of the high-pressure inner cylinder 6. These retaining grooves 51 are located on the inner edge of the threaded ring 5. There are at least two retaining grooves 51. In this embodiment, there are four retaining grooves 51, spaced at equal angles along the circumference of the threaded ring 5.

[0026] See also Figure 3 、 Figure 4 and Figure 8 As shown, the disassembly and assembly tool includes a connecting disk 1, a movable block 2 and a connecting rod 3. The connecting disk 1 is a disc-shaped structure. The connecting disk 1 includes a first surface and a second surface arranged opposite to each other. The first surface of the connecting disk 1 is provided with a plurality of slide grooves 11. The slide grooves 11 extend radially of the connecting disk 1. The second surface of the connecting disk 1 is coaxially provided with a connecting portion 4. The connecting portion 4 is suitable for docking with a torque tool. The torque tool can drive the connecting disk 1 to rotate through the connecting portion 4. The movable block 2 is slidably arranged in the corresponding slide groove 11. The movable block 2 is abutted and positioned with the connecting disk 1 by bolts. A clamping block 21 adapted to the clamping groove 51 is provided on the movable block 2. The connecting rod 3 is arranged radially of the connecting disk 1. The end of the connecting rod 3 is threadedly connected to the connecting portion 4.

[0027] There are several connecting rods 3. In this embodiment, there are six connecting rods 3. An end of the connecting rod 3 away from the connecting portion 4 is provided with an anti-slip protrusion for the staff to hold.

[0028] In this embodiment, the torque tools include but are not limited to wrenches, torque wrenches, etc.

[0029] In some embodiments, the connecting disk 1 and the connecting rod 3 are both made of aluminum alloy.

[0030] In this embodiment, please refer to Figure 2 As shown, the clamping groove 51 includes a bottom wall 511 and side walls 512 disposed on both sides of the bottom wall 511. The angle between the bottom wall 511 and the end face of the threaded ring 5 is 120° to 150°. The cross section of the clamping block 21 is triangular.

[0031] Preferably, the angle between the bottom wall 511 and the end face of the threaded ring 5 is 135°. The cross-section of the clamping block 21 is an isosceles right triangle, with the right angle of the isosceles right triangle being 20 mm long. The sidewall 512 of the clamping slot 51 is an isosceles right triangle, with the right angle of the isosceles right triangle also being 20 mm long.

[0032] Furthermore, there are at least two chutes 11, and the plurality of chutes 11 are distributed along the circumference of the connecting disk 1. There are at least two clamping blocks 21, and the plurality of clamping blocks 21 are distributed along the circumference of the connecting disk 1. There are at least two movable blocks 2, and the plurality of movable blocks 2 are distributed along the circumference of the connecting disk 1.

[0033] In this embodiment, there are four chute grooves 11 and four movable blocks 2, which correspond to each other. The four chute grooves 11 are distributed at equal angles along the circumference of the connecting disk 1.

[0034] In this embodiment, please refer to Figure 5 As shown, the cross section of the chute 11 is T-shaped to prevent the movable block 2 from accidentally separating from the chute 11 .

[0035] See also Figure 6 As shown, the movable block 2 includes a clamping block 21 and a slider body 22. Specifically, the slider body 22 extends radially along the connecting disk 1 and is slidably connected to the slide groove 11. The threaded end of the bolt is threadedly connected to the slider body 22 and abuts against the connecting disk 1 to position the slider body 22. The clamping block 21 is located at the end of the slider body 22 away from the center of the connecting disk 1. When the clamping block 21 is engaged with the clamping groove 51, the slider body 22 is adapted to abut the inner ring of the threaded ring 5.

[0036] Furthermore, in order to effectively protect the inner ring of the threaded ring 5 , the end surface of the slider body 22 away from the center of the connecting disk 1 is an arc surface 221 , that is, the slider body 22 abuts against the inner ring of the threaded ring 5 through the arc surface 221 .

[0037] Furthermore, the arc surface 221 is made of copper, which effectively prevents the slider body 22 from scratching the inner ring of the threaded ring 5 .

[0038] In this embodiment, the outer diameter of the connecting disk 1 is smaller than the inner diameter of the threaded ring 5 so as to be placed inside the threaded ring 5. The clamping block 21 is placed outside the connecting disk 1 to prevent the connecting disk 1 from interfering with the connection between the clamping block 21 and the clamping groove 51.

[0039] Furthermore, the connecting portion 4 is an inner hexagonal structure or an outer hexagonal structure, so as to be connected with the torque tool. In this embodiment, the connecting portion 4 is an outer hexagonal sleeve. The inner hole of the connecting portion 4 is an inner hexagonal hole.

[0040] In this embodiment, the connecting plate 1 and the connecting portion 4 are integrally formed.

[0041] For further information, see Figure 3 As shown, a first threaded hole 13 is defined in the center of the connecting disc 1. This hole 13 is suitable for lifting and weight reduction, i.e., it serves as a lifting hole. The first threaded hole 13 is arranged axially along the connecting disc 1 and extends beyond the connecting portion 4. In this embodiment, the first threaded hole 13 communicates with the inner hole of the connecting portion 4.

[0042] When the outer diameter of the connecting plate 1 is larger, please refer to Figure 3 As shown, a weight-reducing hole 12 is provided on the connecting disk 1 to reduce the weight of the connecting disk 1 .

[0043] When the outer diameter of the connecting plate 1 is small, refer to Figure 7 As shown, the connecting plate 1 is not provided with a weight-reducing hole 12 .

[0044] For further information, see Figure 3 As shown, the connecting plate 1 is further provided with a second threaded hole 14, which serves as a lifting hole. The second threaded holes 14 are distributed near the outer edge of the connecting plate 1. In this embodiment, there are four second threaded holes 14, which are distributed at equal angles along the circumference of the connecting plate 1.

[0045] On the other hand, the present application discloses an assembly method for disassembling and assembling tooling, which specifically includes the following steps: S1. Place the movable block 2 of the disassembly tool on the inner ring of the threaded ring 5, adjust the relative position of the movable block 2 and the slide groove 11, and use bolts to position the movable block 2 so that the clamping block 21 is clamped with the corresponding clamping groove 51; at this time, the disassembly tool is connected to the threaded ring as a whole (such as Figure 8 shown); S2. Place the threaded ring 5 in the mounting hole of the high-pressure inner cylinder 6, and rotate the disassembly tooling by the connecting rod 3 so that the connecting disc 1 drives the threaded ring 5 to rotate through the clamping block 21 to pre-tighten the threaded ring 5. When the connecting portion 4 is long and the connecting rod 3 is located at the end of the connecting portion 4 close to the connecting disc 1, after step S2, there is no need to remove the connecting rod 3 from the connecting portion 4, and step S3 can be directly performed. When the connecting portion 4 is short, after step S2, the connecting rod 3 needs to be removed from the connecting portion 4 before step S3 is performed.

[0046] S3. Connect the torque tool to the connecting portion 4 and use the torque tool to effectively tighten the threaded ring 5 into the mounting hole of the high-pressure inner cylinder 6.

[0047] In general, the present application cooperates with the connecting plate, the movable block and the connecting rod to effectively tighten the threaded ring on the high-pressure inner cylinder; by adjusting the relative position of the slide groove and the movable block to match threaded rings of different specifications, it can also adapt to threaded rings with special-shaped inner rings, effectively improving the adaptability; through the cooperation between the clamping block and the clamping groove, and the abutment between the arc surface and the threaded ring, during the assembly process of the threaded ring, the disassembly tooling will not accidentally fall off the threaded ring, thereby improving safety performance and preventing the tooling from injuring workers.

[0048] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Anyone skilled in the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by one of ordinary skill in the art without departing from the spirit and technical principles disclosed herein are intended to be covered by the claims of the present invention.

Claims

1. A threaded ring disassembly and assembly tool, used for installing a threaded ring (5) on a high-pressure inner cylinder (6), characterized in that: The disassembly and assembly tool comprises a connecting plate (1), a movable block (2) and a connecting rod (3); The connecting disk (1) comprises a first surface and a second surface arranged opposite to each other; the first surface of the connecting disk (1) is provided with a plurality of slide grooves (11), and the slide grooves (11) extend along the radial direction of the connecting disk (1); the second surface of the connecting disk (1) is coaxially provided with a connecting portion (4), and the connecting portion (4) is suitable for docking with a torque tool, and the torque tool can drive the connecting disk (1) to rotate through the connecting portion (4); The movable block (2) is slidably arranged in the corresponding sliding groove (11), and the movable block (2) is abutted and positioned with the connecting plate (1) by means of bolts; a clamping block (21) is provided on the movable block (2) and is adapted to the clamping groove (51) of the threaded ring (5); The connecting rod (3) is arranged along the radial direction of the connecting disk (1), and its end is threadedly connected to the connecting portion (4).

2. The disassembly and assembly tool according to claim 1, characterized in that: The movable block (2) comprises: a clamping block (21) and a slider body (22); The slider body (22) extends radially along the connecting disk (1) and is slidably connected to the slide groove (11); the threaded end of the bolt is threadedly connected to the slider body (22) and abuts against the connecting disk (1); The clamping block (21) is located at an end of the slider body (22) away from the center of the connecting disk (1); The slider body (22) is adapted to abut against the inner ring of the threaded ring (5) when the clamping block (21) and the clamping groove (51) are clamped together.

3. The disassembly and assembly tool according to claim 2, characterized in that: The end surface of the slider body (22) away from the center of the connecting disk (1) is a curved surface (221), and the curved surface (221) is made of copper.

4. The disassembly and assembly tool according to claim 1, characterized in that: The cross section of the clamping block (21) is triangular.

5. The disassembly and assembly tool according to claim 1, characterized in that: There are at least two sliding grooves (11), and the plurality of sliding grooves (11) are distributed along the circumference of the connecting disk (1); There are at least two movable blocks (2), and the plurality of movable blocks (2) are distributed along the circumference of the connecting disk (1).

6. The disassembly and assembly tool according to claim 1, characterized in that: A first threaded hole (13) is provided at the center of the connecting disk (1), the first threaded hole (13) being arranged along the axial direction of the connecting disk (1) and extending to the outside of the connecting portion (4); the first threaded hole (13) is suitable for hoisting and weight reduction.

7. The disassembly and assembly tool according to claim 1, characterized in that: The cross section of the chute (11) is T-shaped.

8. The disassembly and assembly tool according to claim 1, characterized in that: The outer diameter of the connecting disk (1) is smaller than the inner diameter of the threaded ring (5); The clamping block (21) is placed outside the connecting disk (1).

9. The disassembly and assembly tool according to claim 1, characterized in that: The connecting portion (4) is an inner hexagonal structure or an outer hexagonal structure.

10. An assembly method for the disassembly and assembly tool according to any one of claims 1 to 9, characterized in that: The specific steps include: S1. Place the movable block (2) of the disassembly and assembly tool on the inner ring of the threaded ring (5), and adjust the relative position of the movable block (2) and the slide groove (11) so that the clamping block (21) and the corresponding clamping groove (51) are clamped together; S2. Place the threaded ring (5) in the mounting hole of the high-pressure inner cylinder (6), and rotate the disassembly and assembly tool through the connecting rod (3) to pre-tighten the threaded ring (5); S3, docking the torque tool with the connecting portion (4), and tightening the threaded ring (5) into the mounting hole of the high-pressure inner cylinder (6) using the torque tool; A plurality of slots (51) are provided on a side of the threaded ring (5) away from the inner cavity of the high-pressure inner cylinder (6), and the slots (51) are located at the inner edge of the threaded ring (5); the slots (51) include a bottom wall (511) and side walls (512) arranged on both sides of the bottom wall (511), and the angle between the bottom wall (511) and the end face of the threaded ring (5) is 120° to 150°.

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