CN217572686U

CN217572686U - Self-locking nut dismounting tool for air gap wind shield of generator

Info

Publication number: CN217572686U
Application number: CN202221667704.0U
Authority: CN
Inventors: 曾庆全; 王秋; 陈咨财; 李义华
Original assignee: Fujian Hongshan Thermoelectricity Co ltd
Current assignee: Fujian Hongshan Thermoelectricity Co ltd
Priority date: 2022-06-30
Filing date: 2022-06-30
Publication date: 2022-10-14
Anticipated expiration: 2032-06-30

Abstract

The utility model relates to a self-locking nut dismounting tool for an air gap wind shield of a generator, which comprises a stud bolt, wherein one end of the stud bolt is connected with a generator main body, and the other end of the stud bolt fixes the air gap wind shield through the self-locking nut; one end of the fixing screw is provided with a threaded part matched with a threaded blind hole arranged at the end part of the self-locking nut, which is positioned at the stud; the fixing screw rod is provided with a slender rod part which is smaller than the bore diameter of the inner bore of the self-locking nut and guides the self-locking nut to move; the hollow nut sleeve comprises a hollow cylinder part movably sleeved outside the fixed screw rod and a nut sleeve which is formed by extending the end part of the hollow cylinder part and is used for rotating the self-locking nut; the hollow cylinder part is communicated with the nut sleeve. The utility model discloses a set screw and hollow nut sleeve cooperation, can be quick stretch into the inboard fixed and the dismantlement that realize the auto-lock nut of engine, can avoid the screw thread fish tail of auto-lock nut simultaneously, promote the security of auto-lock nut.

Description

Self-locking nut dismounting tool for air gap wind shield of generator

Technical Field

The utility model relates to a extracting tool field especially relates to a generator air gap deep bead auto-lock nut assembly and disassembly tools.

Background

The locknut, also called stop nut, round nut, root nut and locknut, is a kind of nut widely used in machinery and other industries, and its working principle is that the friction between nut and bolt is used for self-locking. But the reliability of such self-locking is reduced in dynamic loads. In some important occasions, some anti-loosening measures can be taken to ensure the locking reliability of the nut.

The air gap deep bead between oriental motor factory 600MW generator stator, rotor uses the auto-lock nut to fix for guaranteeing can not the pine takes off in the operation. Because the air gap deep bead is installed in the narrow gap between stator, rotor to deepen the inside in gap, traditional instrument can't direct dismouting. In the process of returning the air gap wind shield of the generator, once the self-locking nut falls into a stator bore of the generator, the rotor needs to be taken out again, and the repair work of the generator is reworked.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

In order to solve the above problem of the prior art, the utility model provides a generator air gap deep bead auto-lock nut assembly and disassembly tools can effectively avoid auto-lock nut to drop and fish tail scheduling problem.

(II) technical scheme

In order to achieve the above object, the utility model discloses a main technical scheme include:

generator air gap deep bead auto-lock nut assembly and disassembly tools includes

One end of the fixing screw is provided with a threaded part matched with a threaded blind hole arranged at the end part of the self-locking nut, which is positioned at the stud; the fixing screw rod is provided with a slender rod part which is smaller than the bore diameter of the inner bore of the self-locking nut and guides the self-locking nut to move;

the hollow nut sleeve comprises a hollow cylinder part which is movably sleeved outside the fixed screw rod and a nut sleeve which is formed by extending the end part of the hollow cylinder part and is used for rotating the self-locking nut; the hollow cylinder part is communicated with the nut sleeve; one end of the stud bolt is connected with the generator main body, and the other end of the stud bolt is used for fixing an air gap wind shield through a self-locking nut.

Furthermore, one end of the fixing screw rod close to the thread part is provided with a positioning part corresponding to the inner diameter of the hollow cylinder part.

Furthermore, the joint of the positioning part and the slender rod part is an arc transition part.

Furthermore, one side of the positioning part close to the end part of the stud bolt is a plane end, and when the thread part rotates into the thread blind hole, the plane end is abutted against and buckled on the end surface of the stud bolt so as to ensure that the fixing screw rod is positioned on the extension line of the central axis of the stud bolt; the other end of the positioning part is connected with the slender rod part to form an arc transition part.

Furthermore, a rotating platform is arranged at the tail part of the fixed screw rod; the tail part of the hollow cylinder part is provided with a rotating handle.

Furthermore, the outer surface of the non-positioning part of the fixing screw is wrapped with a flexible material.

Further, the flexible material is silica gel or rubberized fabric.

Furthermore, a magnet is arranged in the nut sleeve.

Furthermore, an anti-dropping rubberized fabric is arranged in the nut sleeve.

Further, the hollow cylindrical portion has a length less than the length of the elongated shaft portion.

(III) advantageous effects

The beneficial effects of the utility model are that: through the cooperation of the fixing screw rod and the hollow nut sleeve, the self-locking nut can be quickly fixed and detached by stretching into the inner side of the engine, meanwhile, the thread scratch of the self-locking nut can be avoided, and the safety of the self-locking nut is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic structural diagram of embodiment 1 of the present invention;

fig. 2 is a schematic structural diagram of embodiment 2 of the present invention;

FIG. 3 is a side view of the set screw;

Detailed Description

To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the embodiments of the present invention are combined to clearly and completely describe the technical solutions of the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element to which the reference is made must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "provided," "connected," and the like are to be construed broadly, and for example, "connected" may be either fixedly connected or detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example 1, please refer to fig. 1 and fig. 3:

One end of the fixing screw rod 4 is provided with a thread part 41 matched with a thread blind hole 11 arranged at the end part of the stud bolt 1 at one end of the self-locking nut 2; the fixing screw rod 4 is provided with a slender rod part 42 which is smaller than the bore diameter of the inner bore of the self-locking nut 2 and guides the self-locking nut 2 to move; one end of the stud bolt 1 is connected with the generator main body, and the other end of the stud bolt fixes an air gap wind shield 3 through a self-locking nut 2; the fixing screw rod 4 is round steel with the length of about 1.7 m (which can be determined according to the depth of the nut installation position), and the front end of the fixing screw rod is provided with a small section of thread, so that the fixing screw rod can be fixed on a stud bolt of the air gap wind shield base. The tail of the fixed screw rod 4 is provided with a rotating platform 44, the rotating platform 44 can be two planes with the length of about 1cm (as shown in figure 2), and the fixed screw rod 4 can be rotated by a monkey wrench at the tail part to fix the fixed screw rod 4 on a stud bolt. The rotary platform 44 can also be arranged as a side plane, which can also facilitate the rotation and fixation of the fixing screw rod 4; in another embodiment, a radial through hole may be provided at the tail of the fixing screw rod 4, and the fixing screw rod 4 may be rotated by inserting a thin rod.

The hollow nut sleeve 5 comprises a hollow cylinder part 51 movably sleeved outside the fixed screw rod 4 and a nut sleeve 52 which is formed by extending the end part of the hollow cylinder part 51 and is used for rotating the self-locking nut 2; the hollow cylindrical portion 51 is penetrated through the nut socket 52. The utility model discloses assembly and disassembly tools is when the installation air gap deep bead, pay screw thread blind hole 11 earlier with 4 rotatory locks of clamping screw in, establish 3 bolt hole cover of air gap deep bead on clamping screw 4 again, utilize clamping screw 4's direction to push into 3 air gap deep beads and make 1 tip of stud is hugged closely to air gap deep bead, pack into nut sleeve 52 with self-locking nut 2 again and block, overlap hollow nut sleeve 5 on clamping screw 4, push into the mounted position and screw with the nut along clamping screw 4, realize self-locking nut 2's installation. Through the utility model discloses the device can effectually avoid the installation with dismantle dropping of in-process self-locking nut 2, all has clamping screw 4 to lead in the whole installation.

When the air gap wind shield 3 is disassembled, the fixing screw rod 4 is firstly locked on the stud bolt 1 of the wind shield base, the hollow nut sleeve 5 is sleeved on the fixing screw rod 4 and is pushed in place along the screw rod, the self-locking nut 2 is disassembled, and the self-locking nut 2 is taken out along the fixing screw rod 4. After the four nuts on the air gap wind shield 3 are completely disassembled, the wind shield is taken out along the fixing screw rod 4, and finally the fixing screw rod 4 is disassembled, so that the disassembling work of the air gap wind shield 3 can be completed. A positioning portion 43 corresponding to the inner diameter of the hollow cylindrical portion 51 is provided at one end of the fixing screw 4 near the screw portion 41. The positioning portion 43 is of a cylindrical structure, and can position the radial position of the nut sleeve 52 in guiding, so that the self-locking nut 2 cannot be inclined during installation, can rotate quickly, and improves installation efficiency. The connection between the positioning portion 43 and the elongated rod portion 42 is a circular arc transition portion 46.

In embodiment 2, as shown in fig. 2, one side of the positioning portion 43 close to the end of the stud bolt is a flat end 45, and when the threaded portion 41 rotates into the threaded blind hole, the flat end 45 abuts against the end surface of the stud bolt to ensure that the fixing screw 4 is located on the central axis extension line of the stud bolt 1, so as to improve the installation portability of the self-locking nut 2; the other end of the positioning part 43 is connected with the elongated rod part to form an arc transition part 46.

In another embodiment of the present invention, the connection between the positioning portion 43 and the elongated rod portion 42 is an arc transition portion. The transition prevents jamming of the hollow nut socket 5 during insertion.

In another embodiment of the present invention, the outer surface of the non-positioning portion of the fixing screw 4 is wrapped with a flexible material. The purpose of using the flexible material to wrap is to prevent the thread of the self-locking nut 2 from generating defects such as scratches and the like, so as to prolong the service life of the self-locking nut 2 and improve the firmness of fixation. The flexible material is silicone or adhesive tape, and may be integrally formed on the elongated shaft portion 42 or may be wound around the adhesive tape.

In another embodiment of the present invention, the hollow cylinder 51 is provided with a rotary handle 53 at the end, so that the positioning nut 2 can be rotated quickly, thereby saving labor.

In another embodiment of the present invention, a magnet is disposed in the nut sleeve 52. The self-locking nut 2 can be conveniently fixed in the self-locking nut, and quick installation is conveniently realized.

In another embodiment of the present invention, the nut sleeve 52 is provided with an anti-dropping adhesive tape, so that the self-locking nut 2 can be better clamped therein, and the quick installation can be conveniently realized.

In another embodiment of the present invention, the length of the hollow cylindrical portion 51 is smaller than the length of the elongated rod portion 42, so that the tail of the fixing screw 4 can be exposed during the locking and detaching processes of the nut, thereby enhancing the operation stability.

The utility model discloses a set screw and hollow nut sleeve cooperation, can be quick stretch into the inboard fixed and the dismantlement that realize the auto-lock nut of engine, can avoid the screw thread fish tail of auto-lock nut simultaneously, promote the security of auto-lock nut.

The above mentioned is only the embodiment of the present invention, and the patent scope of the present invention is not limited thereby, and all the equivalent transformations made by the contents of the specification and the drawings, or the direct or indirect application in the related technical field, are included in the patent protection scope of the present invention.

Claims

1. The utility model provides a generator air gap deep bead auto-lock nut assembly and disassembly tools which characterized in that: comprises that

the hollow nut sleeve comprises a hollow cylinder part movably sleeved outside the fixed screw rod and a nut sleeve which is formed by extending the end part of the hollow cylinder part and is used for rotating the self-locking nut; the hollow cylinder part is communicated with the nut sleeve;

one end of the stud bolt is connected with the generator main body, and the other end of the stud bolt fixes an air gap wind shield through a self-locking nut.

2. The generator air gap wind shield self-locking nut dismounting tool according to claim 1, characterized in that: and one end of the fixing screw rod, which is close to the thread part, is provided with a positioning part with the inner diameter equivalent to that of the hollow cylinder part.

3. The generator air gap wind shield self-locking nut dismounting tool according to claim 2, characterized in that: the joint of the positioning part and the slender rod part is an arc transition part.

4. The generator air gap wind deflector self-locking nut dismounting tool according to claim 2, characterized in that: one side of the positioning part, which is close to the end part of the stud bolt, is a plane end, and when the thread part rotates into the thread blind hole, the plane end is abutted and buckled on the end surface of the stud bolt so as to ensure that the fixing screw rod is positioned on the extension line of the central axis of the stud bolt; the other end of the positioning part is connected with the slender rod part to form an arc transition part.

5. The generator air gap wind deflector self-locking nut dismounting tool according to claim 3 or 4, characterized in that: the tail part of the fixed screw is provided with a rotating platform; the tail part of the hollow cylinder part is provided with a rotating handle.

6. The generator air gap wind deflector self-locking nut dismounting tool according to any one of claims 2-4, characterized in that: the outer surface of the non-positioning part of the fixing screw is wrapped with a flexible material.

7. The generator air gap wind shield self-locking nut dismounting tool of claim 6, characterized in that: the flexible material is silica gel or adhesive tape.

8. The generator air gap wind shield self-locking nut dismounting tool according to claim 1, characterized in that: and a magnet is arranged in the nut sleeve.

9. The generator air gap wind shield self-locking nut dismounting tool according to claim 1, characterized in that: the nut sleeve is internally provided with an anti-dropping rubberized fabric.

10. The generator air gap wind deflector self-locking nut dismounting tool according to claim 1, characterized in that: the hollow cylindrical portion has a length less than the length of the elongated shank portion.