CN214723898U

CN214723898U - Broken bolt taking-out tool in fan variable-pitch bearing hole

Info

Publication number: CN214723898U
Application number: CN202120075175.4U
Authority: CN
Inventors: 王健健
Original assignee: China Resources Wind Power Haiyuan Co ltd
Current assignee: China Resources Wind Power Haiyuan Co ltd
Priority date: 2021-01-12
Filing date: 2021-01-12
Publication date: 2021-11-16
Anticipated expiration: 2031-01-12

Abstract

The utility model discloses a fan becomes downthehole fracture bolt of oar bearing and takes out frock, including first location bearing, second location bearing and drill jig, first location bearing housing is established the front end of drill jig, second location bearing housing is established the rear end of drill jig, the front end centre gripping of drill jig has the drill bit, the rear end of drill jig is connected with the extension bar. The utility model discloses have the function of guaranteeing drilling at disconnected silk center, fix a position the drill jig through adopting first location bearing and second location bearing, first location bearing and second location bearing and drill jig cooperation, make the drill bit can be located the center of disconnected silk in the screw just, and bearing structure does not influence the rotation of drill bit, first location bearing and second location bearing are overlapped respectively to the front end and the rear end of drill jig, guarantee whole frock and the sectional straightness that hangs down, can drive drill jig and drill bit follow through rotating the extension bar and rotate, accomplish the purpose of punching and getting the silk.

Description

Broken bolt taking-out tool in fan variable-pitch bearing hole

Technical Field

The utility model relates to an equipment frock technical field, specifically speaking relate to a fan becomes downthehole fracture bolt of oar bearing and takes out frock.

Background

A large number of high-strength bolts are adopted at each connecting part of the wind turbine generator. During the operation of the fan, the fan is often subjected to unstable loads due to unstable wind conditions. In particular the connecting bolts at the pitch bearing are subjected to instable loads throughout the year, which causes the individual bolts to easily break. The bolt broken in the hole is difficult to take out, and is always a work which is hard for field staff to feel.

For the broken wire taking work, if advanced equipment such as a magnetic drill, an electric spark drilling machine and the like is adopted, the broken wire is easy to take out. However, wind power plants generally belong to field and high-altitude operation, and equipment with high cost performance, high operation difficulty and high risk coefficient cannot be normally equipped on the site due to the restriction of various factors. Therefore, the tool is economical and portable, and is suitable for actual situations on site.

Because of the hole drilled in the bolt section, it must be ensured that it is centered in the bolt section. Otherwise, the rotary broken wire extractor is not concentric with the section drilling hole, and a larger torque is generated, so that the broken wire is difficult to unscrew.

The reason that the drill hole does not reach the center of the section is that the drill bit is short, and the lengthening rod is welded before the drill hole is short, and the welding process error is caused. The drill bit and the extension bar are not coaxial, the drill bit and the extension bar are easy to swing when rotating at high speed, the inner space of the screw hole is narrow, and the drill bit is manually mastered to find the center of the section and is difficult to master. The center of a section is difficult to find, and even internal threads of the hole are easy to damage.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a convenient to use is provided, gets the effectual fan of disconnected silk and becomes downthehole fracture bolt of oar bearing and take out the frock.

In order to solve the technical problem, the utility model discloses a following technical scheme: the utility model provides a fan becomes downthehole fracture bolt of oar bearing and takes out frock, includes first location bearing, second location bearing and drill jig, first location bearing housing is established the front end of drill jig, second location bearing housing is established the rear end of drill jig, the front end centre gripping of drill jig has the drill bit, the rear end of drill jig is connected with the extension bar.

Further, the extension bar is an integrated into one piece structure, the joint can be dismantled to the front end of extension bar in the drill jig, the extension bar can drive the coaxial rotation of drill jig, the rear end of extension bar is polished rod and centre gripping on electric hand drill.

Further, the first positioning bearing and the second positioning bearing are in clearance fit with the threaded hole of the broken wire.

Further, the first locating bearing forms an interference fit with the front end of the drill clamp.

Furthermore, the front end of the drill clamp is provided with a multi-stage clamping opening, the inner diameter of each stage of the multi-stage clamping opening decreases progressively from front to back, the position of each stage of the multi-stage clamping opening on the drill clamp is in threaded connection with a fastening bolt, and the fastening bolt can be screwed into the multi-stage clamping opening to be abutted against the drill.

The guide ring is fixed outside the broken thread hole, the inner ring aperture of the guide ring is the same as the thread aperture of the broken thread, and the first positioning bearing and the second positioning bearing are in clearance fit with the guide ring.

The beneficial effects of the utility model are embodied in:

the utility model discloses have the function of guaranteeing drilling at disconnected silk center, fix a position drill jig through adopting first location bearing and second location bearing, the external diameter of first location bearing and second location bearing is the same with the screw hole of disconnected silk, first location bearing and second location bearing and the cooperation of drill jig, can guarantee the location of drill bit like this, make the drill bit can be located the center of disconnected silk in the screw just, and bearing structure does not influence the rotation of drill bit, the front end and the rear end of drill jig overlap first location bearing and second location bearing respectively, guarantee whole frock and sectional straightness that hangs down, can drive drill jig and drill bit follow the rotation through rotating the extension bar, accomplish the purpose of punching and getting the silk.

Drawings

Fig. 1 is the utility model discloses a fan becomes downthehole fracture bolt of oar bearing and takes out frock planar structure sketch map.

Fig. 2 is a schematic perspective view of the tool.

Fig. 3 is a top cross-sectional view of the tooling.

Fig. 4 is a front cross-sectional view of the tool after attachment to a drill bit.

Fig. 5 is a perspective view of the extension bar.

FIG. 6 is a cross-sectional view of a tool using a guide ring.

The components in the drawings are labeled as follows: 1. a first positioning bearing; 2. a second positioning bearing; 3. a drill chuck; 301. a multi-stage clamping port; 4. tightening the bolt; 5. lengthening a rod; 6. a drill bit; 7. a guide ring.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The embodiments and features of the embodiments in the present application may be combined with each other without conflict. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that, if directional indications (such as upper, lower, left, right, front and rear … …) are involved in the embodiment of the present invention, the directional indications are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are changed accordingly.

In addition, if there is a description relating to "first", "second", etc. in the embodiments of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the meaning of "and/or" appearing throughout includes three juxtapositions, exemplified by "A and/or B" including either A or B or both A and B. In addition, "a plurality" means two or more. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

See fig. 1-6.

The utility model relates to a fan becomes downthehole fracture bolt of oar bearing and takes out frock, including first location bearing 1, second location bearing 2 and

drill jig

3, 1 cover of first location bearing is established the front end of

drill jig

3, 2 covers of second location bearing are established the rear end of drill jig 3, the front end centre gripping of drill jig 3 has drill bit 6, the rear end of drill jig 3 is connected with extension bar 5.

The utility model discloses have the function of guaranteeing drilling at disconnected silk center, fix a position drill jig 3 through adopting first location bearing 1 and second location bearing 2, first location bearing 1 and second location bearing 2's external diameter is the same with the screw hole of disconnected silk, first location bearing 1 and second location bearing 2 cooperate with drill jig 3, can guarantee the location of drill bit 6 like this, make drill bit 6 can be located the center of disconnected silk in the screw just, and bearing structure does not influence the rotation of drill bit 6, first location bearing 1 and second location bearing 2 are overlapped respectively to the front end and the rear end of drill jig 3, guarantee whole frock and the sectional straightness that hangs down, can drive drill jig 3 and drill bit 6 through rotating extension bar 5 and follow the rotation, accomplish the purpose of punching.

In an embodiment, extension bar 5 is integrated into one piece structure, the joint can be dismantled to extension bar 5's front end in drill jig 3, extension bar 5 can drive drill jig 3 coaxial rotation, the rear end of extension bar 5 is the polished rod and the centre gripping is on electric hand drill. Design like this, integrated into one piece's extension bar 5 is more stable when using, and extension bar 5 can be dismantled and connect in drill jig 3, and convenient the dismantlement during the use, extension bar 5 can drive 3 coaxial rotations of drill jig, through with 5 centre gripping of extension bar in electric hand drill, can drive extension bar 5 rotation and then drive drill jig 3 and rotate the completion and punch through electric hand drill.

In one embodiment, the first positioning bearing 1 and the second positioning bearing 2 form clearance fit with a threaded hole of a broken wire. Design like this, through forming clearance fit with first location bearing 1 and second location bearing 2 and the screw hole of disconnected silk, can ensure can not rock at the in-process of getting disconnected silk, whole more stable.

In an embodiment, the first locating bearing 1 forms an interference fit with the front end of the drill holder 3. By the design, the first positioning bearing 1 and the drill clamp 3 can be prevented from falling off.

In an embodiment, a multi-stage clamping opening 301 is formed at the front end of the drill chuck 3, the inner diameter of each of the multi-stage clamping openings 301 decreases progressively from front to back, a fastening bolt 4 is screwed on the drill chuck 3 corresponding to each of the multi-stage clamping openings 301, and the fastening bolt 4 can be screwed into the multi-stage clamping opening 301 to be fastened on the drill 6. Design like this, multistage centre gripping mouth 301 can the centre gripping drill bit 6 of different specifications, and rethread fastening bolt 4 is fixed the drill bit 6 of centre gripping in multistage centre gripping mouth 301 inside, can avoid drill bit 6 to take place relative rotation with the frock at the pivoted in-process, can guarantee that drill bit 6 can not skid, selects drill bit 6 from small to big to ream the broken wire through multistage centre gripping mouth 301, and progressively ream like this, can guarantee smooth drilling.

In one embodiment, the wire cutting device further comprises a guide ring 7 used when a broken wire extends out of the threaded hole, the guide ring 7 is fixed outside the broken wire threaded hole, the inner ring aperture of the guide ring 7 is the same as the threaded aperture of the broken wire, and the first positioning bearing 1 and the second positioning bearing 2 are in clearance fit with the guide ring 7. Due to the design, when the broken wire is positioned on the surface of the internal thread hole of the workpiece, the tool cannot be conveniently inserted into the threaded hole where the broken wire is positioned, and the hole is also not conveniently drilled at the center of the broken wire in a traditional mode, so that the guide ring 7 is artificially additionally arranged, the hole of the guide ring 7 is communicated with the hole of the broken wire, the tool can be conveniently positioned and drilled, and the problem of the broken wire on the surface of the workpiece can be solved.

It is understood that the examples and embodiments herein are for illustrative purposes only and are not intended to limit the present invention, and that various modifications or changes in light thereof will be suggested to persons skilled in the art and are to be included within the spirit and purview of this application.

Claims

1. The utility model provides a fan becomes downthehole fracture bolt of oar bearing and takes out frock which characterized in that: including first location bearing (1), second location bearing (2) and drill jig (3), first location bearing (1) cover is established the front end of drill jig (3), second location bearing (2) cover is established the rear end of drill jig (3), the front end centre gripping of drill jig (3) has drill bit (6), the rear end of drill jig (3) is connected with extension bar (5).

2. The fan variable pitch bearing hole internal fracture bolt take-out tool of claim 1, characterized in that: extension bar (5) are integrated into one piece structure, the joint can be dismantled to the front end of extension bar (5) in drill jig (3), extension bar (5) can drive drill jig (3) coaxial rotation, the rear end of extension bar (5) is polished rod and centre gripping on electric hand drill.

3. The fan pitch bearing hole internal fracture bolt of claim 1 or 2 takes out frock, characterized in that: the first positioning bearing (1) and the second positioning bearing (2) form clearance fit with the threaded hole of the broken wire.

4. The fan pitch bearing hole internal fracture bolt of claim 1 or 2 takes out frock, characterized in that: the first positioning bearing (1) and the front end of the drill clamp (3) form interference fit.

5. The fan pitch bearing hole internal fracture bolt of claim 1 or 2 takes out frock, characterized in that: multistage centre gripping mouth (301) have been seted up to the front end of drill jig (3), multistage centre gripping mouth (301) is by preceding internal diameter to each grade after to decrement, drill jig (3) are gone up corresponding the equal threaded connection in position department of each grade of multistage centre gripping mouth (301) has holding bolt (4), holding bolt (4) can screw in multistage centre gripping mouth (301) and support tightly on drill bit (6).

6. The fan pitch bearing hole internal fracture bolt of claim 1 or 2 takes out frock, characterized in that: the wire-breaking positioning device is characterized by further comprising a guide ring (7) used when a broken wire extends out of the threaded hole, the guide ring (7) is fixed outside the threaded hole of the broken wire, the inner ring aperture of the guide ring (7) is the same as the thread aperture of the broken wire, and the first positioning bearing (1) and the second positioning bearing (2) are in clearance fit with the guide ring (7).