Auxiliary tool for mounting and dismounting large nut at lower part of steam turbine cylinder

Abstract

The utility model provides an auxiliary tool for mounting and dismounting a large nut at the lower part of a steam turbine cylinder, and relates to the technical field of auxiliary tools for mounting steam turbines. The auxiliary tool for mounting and dismounting the large nut at the lower part of the steam turbine cylinder comprises a hoisting piece, a connecting piece and a bearing piece, one end of the connecting piece is connected with the hoisting piece, the other end of the connecting piece is connected with the bearing piece, and the connecting piece can penetrate through the large nut and the heating hole of the large bolt; the bearing piece comprises an adjusting rod, an adjusting nut and a bearing disc used for bearing the large nut, the end of the adjusting rod is connected with the connecting piece, the adjusting nut is connected to the adjusting rod in a threaded mode, the bearing disc is arranged on the adjusting rod in a sleeving mode, and the bearing disc is located above the adjusting nut. The technical effect of conveniently installing the large nut on the lower portion of the steam turbine cylinder is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to steam turbine installation auxiliary tool technical field, specifically, steam turbine cylinder lower big nut installation and dismounting auxiliary tool. BACKGROUND

[0002] Steam turbine mainly has three, is steam turbine, gas turbine and steam turbine generator respectively. In the steam turbine installation process, steam turbine cylinder nut reaches 30Kg above, especially steam turbine cylinder lower nut installation space is narrow, because the operation space is small, the nut is heavy, therefore, the nut of steam turbine cylinder bottom only relies on manpower to install not only is not convenient operation, and there is high place falling object's safety risk, dozens of kilograms of nut pound to fall to cause serious threat to the worker. SUMMARY

[0003] The utility model discloses a steam turbine cylinder lower big nut installation and dismounting auxiliary tool to alleviate the technical problem of steam turbine cylinder lower big nut inconvenient installation in the prior art.

[0004] In a first aspect, the utility model discloses a steam turbine cylinder lower big nut installation and dismounting auxiliary tool, including hoisting spare, connecting spare and support spare;

[0005] One end of connecting spare is connected with hoisting spare, and the other end is connected with support spare, and connecting spare can pass through the heating hole of big nut and big bolt;

[0006] Support spare includes adjusting rod, adjusting nut and the support tray for supporting big nut, and the end of adjusting rod is connected with connecting spare, adjusting nut is screwed on adjusting rod, support tray is set on adjusting rod, and support tray is located above adjusting nut.

[0007] In combination with the first aspect, the utility model discloses a possible implementation mode of the first aspect, wherein the end of adjusting rod is provided with a connecting groove for accommodating connecting spare, and a connecting pin hole is formed in adjusting rod, and connecting pin hole passes through connecting groove.

[0008] In combination with the first aspect, the utility model discloses a possible implementation mode of the first aspect, wherein adjusting rod is connected with connecting spare through pin shaft.

[0009] In combination with the first aspect, the utility model discloses a possible implementation mode of the first aspect, wherein adjusting nut adopts butterfly nut.

[0010] With reference to the first aspect, in a possible implementation of the first aspect, a bearing is arranged between the adjusting nut and the supporting tray.

[0011] With reference to the first aspect, in a possible implementation of the first aspect, a gasket is arranged between the adjusting nut and the bearing.

[0012] With reference to the first aspect, in a possible implementation of the first aspect, a positioning convex ring adapted to the large nut is arranged on the supporting member.

[0013] With reference to the first aspect, in a possible implementation of the first aspect, the hoisting member is a lifting ring.

[0014] With reference to the first aspect, in a possible implementation of the first aspect, the connecting member is a chain.

[0015] With reference to the first aspect, in a possible implementation of the first aspect, the connecting member is a connecting rod.

[0016] Beneficial effects:

[0017] The utility model provides a kind of steam turbine cylinder lower portion large nut installation and removal auxiliary tool, including hoisting member, connecting member and supporting member;The one end of connecting member is connected with hoisting member, and the other end is connected with supporting member, and connecting member can pass through the heating hole of large nut and large bolt;Supporting member includes adjusting rod, adjusting nut and the supporting tray for supporting large nut, the end of adjusting rod is connected with connecting member, adjusting nut is threadedly connected on adjusting rod, supporting tray is set on adjusting rod, and supporting tray is located above adjusting nut.

[0018] Specifically, when installing steam turbine cylinder, staff first connects upper large nut with large bolt, then passes large bolt in the connecting hole of upper and lower cylinder, then staff passes connecting member with hoisting member in the heating hole of upper large nut and large bolt, and the distal end of connecting member away from hoisting member can pass out the heating hole of large bolt, the distal end of connecting member is then passed through the heating hole of lower large nut to be installed, then supporting tray is set on adjusting rod, then adjusting nut is connected on the bottom of adjusting rod, adjusting nut abuts against supporting tray, so that lower large nut is constrained on adjusting rod, then the staff of upper portion can slowly lift hoisting member, and calmly install lower large nut to be installed upwards, so that the staff of lower portion can conveniently install lower large nut on large bolt, while when installing, when lower large nut accidentally falls, supporting tray supports lower large nut, so that lower large nut can be avoided to fall and injure staff. Attached Figure Description

[0019] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A schematic diagram illustrating the use of the auxiliary tool for installing and disassembling the large nut at the bottom of the steam turbine cylinder provided in this embodiment of the utility model.

[0021] Figure 2 This is a schematic diagram illustrating the use of the auxiliary tool for installing and disassembling the lower large nut of the steam turbine cylinder, as provided in this embodiment of the utility model, when connecting with the lower large nut.

[0022] icon:

[0023] 10 - Upper large nut; 20 - Lower large nut; 30 - Large bolt; 40 - Upper cylinder; 50 - Lower cylinder;

[0024] 100 - Lifting components;

[0025] 200 - Connector;

[0026] 300 - Support component; 310 - Adjusting rod; 311 - Connecting groove; 312 - Pin; 320 - Adjusting nut; 330 - Support plate; 340 - Bearing; 350 - Washer. Detailed Implementation

[0027] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0028] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model.

[0029] In addition, the terms "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more, unless otherwise explicitly specified.

[0030] In the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication or interaction relationship between two elements. For ordinary skilled persons in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0031] The utility model will be further described in detail below through specific embodiments and in conjunction with the drawings.

[0032] Referring to Figure 1 and Figure 2 , the embodiment provides a steam turbine cylinder lower part big nut mounting and dismounting auxiliary tool, including hoisting piece 100, connecting piece 200 and support piece 300, one end of connecting piece 200 is connected with hoisting piece 100, the other end is connected with support piece 300, and connecting piece 200 can pass through the heating hole of big nut and big bolt 30, support piece 300 includes adjusting rod 310, adjusting nut 320 and support tray 330 for supporting big nut, the end of adjusting rod 310 is connected with connecting piece 200, adjusting nut 320 is threadedly connected on adjusting rod 310, support tray 330 is sleeved on adjusting rod 310, and support tray 330 is located above adjusting nut 320.

[0033] Specifically, when installing the steam turbine cylinder, the worker first connects the upper large nut 10 and the large bolt 30 together, then the large bolt 30 is arranged in the connecting hole of the upper cylinder 40 and the lower cylinder 50, then the worker arranges the connecting piece 200 provided with the lifting piece 100 in the heating hole of the upper large nut 10 and the large bolt 30, and the distal end of the connecting piece 200 away from the lifting piece 100 can pass through the heating hole of the large bolt 30, and then the distal end of the connecting piece 200 passes through the heating hole of the lower large nut 20 to be installed, then the bearing plate 330 is sleeved on the adjusting rod 310, and the adjusting nut 320 is connected at the bottom of the adjusting rod 310 and abuts against the bearing plate 330, so as to constrain the lower large nut 20 on the adjusting rod 310, then the upper worker can slowly lift the lifting piece 100, and the lower worker can conveniently install the lower large nut 20 on the large bolt 30, and when the lower large nut 20 falls accidentally during installation, the bearing plate 330 can support the lower large nut 20, so as to avoid that the lower large nut 20 falls and injures the worker.

[0034] The lifting piece 100 can adopt a lifting ring. In addition, those skilled in the art can select the structure of the lifting piece 100 according to actual conditions, which will not be described here.

[0035] The connecting piece 200 adopts a chain, so that the connecting piece 200 can conform to the trend of the heating hole in the large bolt 30, and the connecting piece 200 can smoothly pass through the heating holes of the upper large nut 10, the large bolt 30 and the lower large nut 20.

[0036] Alternatively, the connecting piece 200 adopts a connecting rod. In addition, those skilled in the art can select the structure of the connecting piece 200 according to actual needs, which will not be described here.

[0037] Referring to FIGS. 1 and 2, Figure 1 and Figure 2 In the optional solution of the embodiment, the end of the adjusting rod 310 connected with the connecting piece 200 is provided with a connecting groove 311 for accommodating the connecting piece 200, and the adjusting rod 310 is provided with a connecting pin hole passing through the connecting groove 311.

[0038] The adjusting rod 310 is connected with the connecting piece 200 through a pin shaft 312.

[0039] Specifically, one end of the connecting piece 200 adopting a chain can fall in the connecting groove 311 of the adjusting rod 310, and then the pin shaft 312 passes through the connecting pin hole, so that the pin shaft 312 can pass through the chain, thereby connecting the connecting piece 200 and the adjusting rod 310 together.

[0040] The adjusting nut 320 is a butterfly nut. The butterfly nut is convenient for connecting the adjusting nut 320 and the adjusting rod 310.

[0041] Referring to Figs. 1 and 2, Figure 1 and Figure 2 In an optional embodiment of the present application, a bearing 340 is arranged between the adjusting nut 320 and the supporting plate 330.

[0042] A gasket 350 is arranged between the adjusting nut 320 and the bearing 340.

[0043] The supporting member 300 is provided with a positioning convex ring matched with the large nut.

[0044] Specifically, the bearing 340 is arranged between the adjusting nut 320 and the supporting plate 330, and the gasket 350 is arranged between the adjusting nut 320 and the bearing 340. Thus, when the lower large nut 20 is connected with the large bolt 30 in the final installation stage, the supporting plate 330 can not rotate with the lower large nut 20, so that the chain is not knotted.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced by equivalents. The modifications or replacements do not change the essence of the corresponding technical solutions, and do not deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A steam turbine lower gland nut installation and removal aid characterized by, The utility model relates to a lifting device for large nut and bolt (30), which comprises a lifting piece (100), a connecting piece (200) and a supporting piece (300). The connecting piece (200) is connected with the lifting piece (100) at one end and connected with the supporting piece (300) at the other end, and the connecting piece (200) can pass through the heating hole of the large nut and bolt (30). The supporting piece (300) comprises an adjusting rod (310), an adjusting nut (320) and a supporting tray (330) for supporting the large nut, the end of the adjusting rod (310) is connected with the connecting piece (200), the adjusting nut (320) is screwed on the adjusting rod (310), the supporting tray (330) is sleeved on the adjusting rod (310), and the supporting tray (330) is located above the adjusting nut (320). The end of the adjusting rod (310) connected with the connecting piece (200) is provided with a connecting groove (311) for accommodating the connecting piece (200), and a connecting pin hole is formed in the adjusting rod (310) and passes through the connecting groove (311).

2. The steam turbine lower cylinder nut mounting and demounting assisting tool according to claim 1, characterized by, The adjusting rod (310) is connected with the connecting piece (200) through a pin shaft (312).

3. The steam turbine lower cylinder nut mounting and demounting assisting tool according to claim 2, characterized by The adjusting nut (320) is a butterfly nut.

4. The steam turbine lower cylinder nut mounting and demounting assisting tool according to claim 1, characterized by, A bearing (340) is arranged between the adjusting nut (320) and the supporting tray (330).

5. The steam turbine lower cylinder nut installation and removal aid tool of claim 4, wherein, A gasket (350) is arranged between the adjusting nut (320) and the bearing (340).

6. The steam turbine lower cylinder nut installation and removal aid tool of claim 5, wherein, The supporting piece (300) is provided with a positioning convex ring matched with the large nut.

7. The steam turbine lower cylinder nut mounting and demounting aid tool according to claim 1, characterized by, The lifting piece (100) is a lifting ring.

8. The lower steam turbine gland nut installation and removal aid tool according to any one of claims 1 to 7, wherein, The connecting piece (200) is a chain.

9. The lower steam turbine gland nut installation and removal aid tool of any one of claims 1-7, wherein, The connecting piece (200) is a connecting rod.

10. The lower steam turbine gland nut installation and removal aid tool according to any one of claims 1 to 7, wherein, ​

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