Bolt and nut placing device

Abstract

The utility model relates to the technical field of steam turbine overhaul, in particular to a bolt and nut placing device which comprises a supporting frame, a placing frame assembly and an operating piece. The containing frame assembly comprises a first containing frame, a second containing frame set and a third containing frame which are sequentially arranged at intervals in the height direction of the supporting frame, the first containing frame, the second containing frame set and the third containing frame are all arranged on the supporting frame, and a plurality of first through holes are formed in part of the bottom wall of the first containing frame at intervals. A plurality of first through holes are formed in the first placing frame set at intervals, a plurality of first bolts penetrate through the first through holes in a one-to-one correspondence mode, nuts are placed on the other part of the bottom wall of the first placing frame, a plurality of second through holes are formed in the second placing frame set at intervals, a plurality of second bolts penetrate through the second through holes in a one-to-one correspondence mode, and nuts are placed on the third placing frame; the operation piece is arranged on the outer side of the supporting frame. According to the device, mutual collision of the bolts and the nuts is avoided, the bolts and the nuts are protected against damage, it is guaranteed that overhauling work is smoothly conducted, and the device can be conveniently carried through the operating piece.

Description

Technical Field

[0001] The utility model relates to the technical field of steam turbine maintenance, in particular to a bolt and nut placing device. Background Art

[0002] A steam turbine is a rotating power machine that converts steam energy into mechanical energy. As a crucial component of nuclear power plant power generation, its operational stability is crucial. A nuclear power steam turbine consists of a high-pressure cylinder, three low-pressure cylinders, and their accessories, including inlet valves, a turning gear, a lubricating oil system (including a jacking oil system), and instrumentation and control systems.

[0003] Because nuclear power steam turbines have low parameters but high rated power, their associated components are significantly larger than those of conventional steam turbines. Consequently, the size and weight of cylinder bolts are gradually increasing, and the number of bolts required is also increasing. Taking the low-pressure cylinder of a steam turbine as an example, there are over 30 different bolt types involved, totaling over 700 bolts. During disassembly of the low-pressure cylinder, the bolts must be removed before the low-pressure rotor can be lifted out for inspection. Properly arranging these bolts and nuts during maintenance to protect related components from damage and loss is a crucial step. During typical steam turbine disassembly, these bolts and nuts are placed disorganized on the rubber mat of the maintenance platform. Due to their large number, they are easily lost. This not only poses a safety hazard to maintenance personnel as they move around, but also easily causes collisions between bolts and nuts, resulting in damage and impacting the maintenance schedule. Therefore, a bolt and nut arrangement device is needed to address these issues. Utility Model Content

[0004] The purpose of the utility model is to provide a bolt and nut placement device that does not affect the movement of maintenance personnel, can avoid damage to the bolts and nuts, ensures that the maintenance work goes smoothly, and is convenient to carry.

[0005] To achieve this purpose, the present invention adopts the following technical solutions:

[0006] Bolt and nut placement device, including:

[0007] Support frame;

[0008] A placement frame assembly includes a first placement frame, a second placement frame group, and a third placement frame that are sequentially spaced apart along the height direction of the support frame, wherein the first placement frame, the second placement frame group, and the third placement frame are all disposed on the support frame, a plurality of first through holes are spaced apart on a portion of the bottom wall of the first placement frame, a plurality of first bolts are passed through the first through holes in a one-to-one correspondence, another portion of the bottom wall of the first placement frame is used for placing nuts, a plurality of second through holes are spaced apart on the second placement frame group, a plurality of second bolts are passed through the second through holes in a one-to-one correspondence, and the third placement frame is used for placing the nuts;

[0009] An operating member is arranged on the outside of the supporting frame, and the operating member is used to lift or move the bolt and nut placing device.

[0010] Furthermore, the second placement frame group includes a plurality of second placement frames, the plurality of second placement frames are arranged on the support frame at intervals along the height direction of the support frame, and the plurality of second through holes are arranged on the bottom wall of the second placement frame.

[0011] Furthermore, the supporting frame includes two first frames, two second frames and two first connecting rods, the two first frames are arranged at intervals along the first horizontal direction, the two first connecting rods are arranged at intervals along the second horizontal direction, one end of the first connecting rod is connected to one of the first frames, and the other end is connected to the other first frame, the two second frames are arranged at intervals along the second horizontal direction, the second frame is located on the top of the first frame, the first placement frame is connected to both of the second frames, part of the second placement frame is connected to both of the first frames, and the other part of the second placement frame is connected to both of the second frames, the third placement frame is connected to both of the first frames, the operating member is arranged on the outside of the first frame, and the first horizontal direction is perpendicular to the second horizontal direction.

[0012] Furthermore, the support frame also includes a connecting frame and a second connecting rod, the connecting frame is located between the two first frames, one end of the connecting frame is connected to the two first connecting rods respectively, one end of the second connecting rod is connected to the other end of the connecting frame, and the other end of the second connecting rod is connected to the second frame.

[0013] Furthermore, the first frame is a ladder frame.

[0014] Furthermore, the first frame and the second frame are connected by welding.

[0015] Furthermore, the bolt and nut placement device also includes a support plate, which is arranged at the bottom of the support frame.

[0016] Furthermore, the support plate is connected to the support frame by welding.

[0017] Furthermore, the third placement frame includes a first bottom plate and a first side plate, the first side plate is arranged on the first bottom plate along the circumference of the first bottom plate, the first bottom plate is used to place the nut, and the first side plate is used to connect with the support frame.

[0018] Furthermore, a first buffer gasket is provided on the first bottom plate.

[0019] Beneficial effects of the utility model:

[0020] The utility model provides a bolt and nut placement device, which includes a support frame, a placement frame assembly, and an operating member. The placement frame assembly includes a first placement frame, a second placement frame group, and a third placement frame, which are arranged in sequence along the height direction of the support frame. The first placement frame, the second placement frame group, and the third placement frame are all arranged on the support frame. A plurality of first through holes are arranged at intervals on a portion of the bottom wall of the first placement frame, and a plurality of first bolts are passed through the first through holes in a one-to-one correspondence. Nuts are placed on another portion of the bottom wall of the first placement frame. A plurality of second through holes are arranged at intervals on the second placement frame group, and a plurality of second bolts are passed through the second through holes in a one-to-one correspondence. The third placement frame can place nuts. The operating member is arranged on the outside of the support frame, and the bolt and nut placement device can be lifted or moved by the operating member. The bolt and nut placement device can prevent bolts and nuts from colliding with each other, thereby protecting the bolts and nuts from damage and ensuring smooth maintenance work. The operating member can also facilitate the transportation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural diagram of a bolt and nut placement device provided by an embodiment of the utility model;

[0022] Figure 2 It is a structural schematic diagram of the support frame provided by an embodiment of the utility model.

[0023] In the picture:

[0024] 1. Support frame; 11. First frame; 12. Second frame; 13. First connecting rod; 14. Connecting frame; 15. Second connecting rod; 16. Reinforcement rod; 21. First placement frame; 211. First through hole; 22. Second placement frame; 221. Second through hole; 23. Third placement frame; 231. First bottom plate; 232. First side plate; 3. Operating member; 4. Support plate. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0028] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model 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, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0029] It should also be noted that, in the description of this utility model, unless otherwise specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections. Those skilled in the art will understand the specific meanings of these terms in this utility model based on the specific circumstances.

[0030] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0031] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0032] The following is combined with Figure 1-Figure 2 The technical solution of the utility model is further illustrated through specific implementation methods.

[0033] During the maintenance of a nuclear power steam turbine, in order to avoid disturbing the movement of maintenance personnel and to prevent damage to bolts and nuts, thereby ensuring smooth maintenance work, an embodiment of the present invention provides a bolt and nut placement device, comprising a support frame 1, a placement frame assembly, and an operating member 3. The placement frame assembly comprises a first placement frame 21, a second placement frame group, and a third placement frame 23, which are sequentially arranged along the height direction of the support frame 1. The first placement frame 21, the second placement frame group, and the third placement frame 23 are all disposed on the support frame 1. A portion of the bottom wall of the first placement frame 21 is provided with a plurality of first through-holes 211 at intervals, through which a plurality of first bolts are correspondingly inserted. Nuts are placed on another portion of the bottom wall of the first placement frame 21. A plurality of second through-holes 221 are provided at intervals on the second placement frame group, through which a plurality of second bolts are correspondingly inserted. The third placement frame 23 is capable of placing nuts. The operating member 3 is disposed on the outside of the support frame 1, and the bolt and nut placement device can be lifted or moved by the operating member 3. Specifically, the first through hole 211 and the second through hole 221 are set according to the size of the bolt. When the turbine is overhauled, the device is lifted or moved to the maintenance site through the operating part 3 for easy transportation. After the bolts and nuts are removed, the first bolts are inserted into the first through holes 211 one by one, and the second bolts are inserted into the second through holes 221 one by one. The nuts are placed in the first placement frame 21 or the third placement frame 23. The bolt and nut placement device can avoid collisions between bolts and nuts, protect the bolts and nuts from damage, ensure the smooth progress of the maintenance work, and facilitate the transportation of the device through the operating part 3.

[0034] Furthermore, the second placement frame group includes a plurality of second placement frames 22, which are spaced apart on the support frame 1 along the height direction of the support frame 1, and a plurality of second through holes 221 are provided on the bottom wall of the second placement frame 22. A plurality of second placement frames 22 are provided, and a plurality of second through holes 221 are correspondingly provided on the second placement frame 22. The second through holes 221 match the size of the second bolts, and the second bolts are inserted into the second through holes 221 one by one according to the model of the second bolts, facilitating the use of the second bolts. Optionally, in this embodiment, the second placement frame group includes four second placement frames 22, which are spaced apart on the support frame 1 along the height direction of the support frame 1. In other embodiments, the number of second placement frames 22 can be set according to actual needs and is not subject to excessive restrictions.

[0035] Furthermore, if Figure 2 As shown, the support frame 1 includes two first frames 11, two second frames 12 and two first connecting rods 13. The two first frames 11 are spaced apart along the first horizontal direction, and the two first connecting rods 13 are spaced apart along the second horizontal direction. One end of the first connecting rod 13 is connected to one of the first frames 11, and the other end is connected to the other first frame 11. The two second frames 12 are spaced apart along the second horizontal direction. The second frames 12 are located on top of the first frames 11. The first placement frame 21 is connected to both second frames 12, part of the second placement frame 22 is connected to both first frames 11, and another part of the second placement frame 22 is connected to both second frames 12. The third placement frame 23 is connected to both first frames 11. The operating member 3 is arranged on the outside of the first frame 11, wherein the first horizontal direction is perpendicular to the second horizontal direction. In this embodiment, the first horizontal direction is consistent with the length direction of the support frame 1, and the second horizontal direction is consistent with the width direction of the support frame 1. The two first frames 11 are connected by two first connecting rods 13. The two second frames 12 are spaced apart along the width of the support frame 1, and the second frames 12 are connected to both first frames 11. The first placement frame 21 and two of the second placement frames 22 are arranged between the two second frames 12, and the third placement frame 23 and the other two second placement frames 22 are arranged between the two first frames 11. The stability of the support frame 1 structure is ensured by the first frames 11 and the second frames 12. An operating member 3 is provided on both sides of each first frame 11 to facilitate the transportation of the device.

[0036] Furthermore, the operating member 3 is connected to the first frame 11 by welding, thereby ensuring the strength of the connection.

[0037] Furthermore, the support frame 1 also includes a connecting frame 14 and a second connecting rod 15. The connecting frame 14 is located between the two first frames 11. One end of the connecting frame 14 is connected to the two first connecting rods 13, one end of the second connecting rod 15 is connected to the other end of the connecting frame 14, and the other end of the second connecting rod 15 is connected to the second frame 12. Two second connecting rods 15 are connected to the top of each connecting frame 14. One second connecting rod 15 is connected to one of the second frames 12 at one end and to the connecting frame 14 at the other end. Another second connecting rod 15 is connected to the other second frame 12 at one end and to the connecting frame 14 at the other end. The second placement frame 22 is connected to both sides of the connecting frame 14 along the first horizontal direction, or to the inner sides of the second connecting rods 15. The provision of the connecting frame 14 and the second connecting rod 15 can further enhance the stability of the support frame 1, thereby providing better support for the placement frame assembly. In this embodiment, two connecting frames 14 are provided, and the two connecting frames 14 are spaced apart along the first horizontal direction between the two first frames 11. The second connecting rods 15 are provided corresponding to the connecting frames 14. In some other embodiments, the number of connecting frames 14 and second connecting rods 15 can be set according to actual needs and is not limited here.

[0038] In this embodiment, two operating members 3 are provided on both sides of the connecting frame 14, which facilitates the transportation of the device and ensures the stability of transportation, thereby preventing the bolts and nuts from slipping.

[0039] Furthermore, the support frame 1 further includes a reinforcing rod 16 , both ends of which are respectively connected to the two first connecting rods 13 to ensure the stability of the connection between the two first frames 11 .

[0040] Furthermore, the first frame 11 is a trapezoidal frame, and the size of the first frame 11 gradually decreases from the bottom to the top. The two second placement frames 22 correspondingly connected to the two first frames 11, the width of the second placement frame 22 close to the top of the first frame 11 is smaller than the width of the other second placement frame 22. The first frame 11 adopts a trapezoidal structure, which can ensure the stability of the support of the first frame 11.

[0041] In this embodiment, the first frame 11, the second frame 12, the first connecting rod 13, the second connecting rod 15 and the connecting frame 14 are all made of steel pipes, which are not only easy to process but also relatively low in cost; the use of steel pipes can reduce the overall weight of the support frame 1 and facilitate transportation.

[0042] Furthermore, the first frame 11 and the second frame 12 are connected by welding. The welding connection makes the connection between the first frame 11 and the second frame 12 strong, thereby ensuring the stability of the overall structure of the support frame 1.

[0043] Furthermore, the bolt and nut placement device also includes a support plate 4, which is arranged at the bottom of the support frame 1. Specifically, both sides of the bottom of the first frame 11 are used for support, and a support plate 4 is provided at each support point of the bottom of the first frame 11. The provision of the support plate 4 can increase the support area of ​​the first frame 11 and further improve the stability of the entire device.

[0044] Optionally, the support plate 4 is connected to the support frame 1 by welding, and the support plate 4 is welded to the bottom of the first frame 11 to ensure that the connection between the support plate 4 and the first frame 11 is firm and reliable.

[0045] Furthermore, the third placement frame 23 includes a first bottom plate 231 and a first side plate 232. The first side plate 232 is disposed on the first bottom plate 231 along the circumference of the first bottom plate 231. The first bottom plate 231 is used to place nuts, and the first side plate 232 is used to connect to the support frame 1. The provision of the first side plate 232 can prevent the nuts from rolling off the first bottom plate 231, further ensuring that the nuts are not damaged.

[0046] Furthermore, the first placement frame 21 includes a second bottom plate and a second side plate. The second side plate is arranged on the second bottom plate along the circumference of the second bottom plate. The second bottom plate is used to place nuts or first bolts, and the second side plate is used to connect to the support frame 1. The second side plate can prevent the nuts from rolling off the second bottom plate, further ensuring that the nuts are not damaged.

[0047] Furthermore, a first buffer gasket is provided on the first bottom plate 231, and a second buffer gasket is provided on the second bottom plate. The first buffer gasket and the second buffer gasket can prevent the nut from rigidly contacting the first bottom plate 231 and the second bottom plate, thereby ensuring that the nut will not be damaged.

[0048] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. Those skilled in the art will appreciate that other variations or modifications can be made based on the above description. It is not necessary and impossible to enumerate all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. Bolt and nut placement device, characterized in that, include: Support frame (1); A placement frame assembly comprises a first placement frame (21), a second placement frame group and a third placement frame (23) which are arranged in sequence along the height direction of the support frame (1); the first placement frame (21), the second placement frame group and the third placement frame (23) are all arranged on the support frame (1); a plurality of first through holes (211) are arranged at intervals on a part of the bottom wall of the first placement frame (21); a plurality of first bolts are passed through the first through holes (211) in a one-to-one correspondence; another part of the bottom wall of the first placement frame (21) is used for placing nuts; a plurality of second through holes (221) are arranged at intervals on the second placement frame group; a plurality of second bolts are passed through the second through holes (221) in a one-to-one correspondence; and the third placement frame (23) is used for placing the nuts; An operating member (3) is arranged on the outside of the support frame (1), and the operating member (3) is used to lift or move the bolt and nut placement device.

2. The bolt and nut placement device according to claim 1, characterized in that: The second placement frame group comprises a plurality of second placement frames (22), wherein the plurality of second placement frames (22) are arranged on the support frame (1) at intervals along the height direction of the support frame (1), and a plurality of second through holes (221) are arranged on the bottom wall of the second placement frame (22).

3. The bolt and nut placement device according to claim 2, characterized in that: The support frame (1) comprises two first frames (11), two second frames (12) and two first connecting rods (13), the two first frames (11) are spaced apart along a first horizontal direction, the two first connecting rods (13) are spaced apart along a second horizontal direction, one end of the first connecting rod (13) is connected to one of the first frames (11), and the other end is connected to the other first frame (11), the two second frames (12) are spaced apart along the second horizontal direction, the second frames (12) are located on the top of the first frame (11), the first placement frame (21) is connected to both the second frames (12), part of the second placement frame (22) is connected to both the first frames (11), and the other part of the second placement frame (22) is connected to both the second frames (12), the third placement frame (23) is connected to both the first frames (11), the operating member (3) is arranged on the outside of the first frame (11), and the first horizontal direction is perpendicular to the second horizontal direction.

4. The bolt and nut placement device according to claim 3, characterized in that: The support frame (1) further comprises a connecting frame (14) and a second connecting rod (15), wherein the connecting frame (14) is located between the two first frames (11), one end of the connecting frame (14) is respectively connected to the two first connecting rods (13), one end of the second connecting rod (15) is connected to the other end of the connecting frame (14), and the other end of the second connecting rod (15) is connected to the second frame (12).

5. The bolt and nut placement device according to claim 3, characterized in that: The first frame (11) is a ladder frame.

6. The bolt and nut placement device according to claim 3, characterized in that: The first frame (11) and the second frame (12) are connected by welding.

7. The bolt and nut arrangement device according to any one of claims 1 to 6, characterized in that: The bolt and nut placement device further comprises a support plate (4), and the support plate (4) is arranged at the bottom of the support frame (1).

8. The bolt and nut placement device according to claim 7, characterized in that: The support plate (4) is connected to the support frame (1) by welding.

9. The bolt and nut arrangement device according to any one of claims 1 to 6, characterized in that: The third placement frame (23) comprises a first bottom plate (231) and a first side plate (232), wherein the first side plate (232) is arranged on the first bottom plate (231) along the circumference of the first bottom plate (231), the first bottom plate (231) is used for placing the nut, and the first side plate (232) is used for connecting to the support frame (1).

10. The bolt and nut placement device according to claim 9, characterized in that: A first buffer pad is provided on the first bottom plate (231).

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