CN218137655U

CN218137655U - Centering tool for bearing hole after gluing maintenance

Info

Publication number: CN218137655U
Application number: CN202222330661.3U
Authority: CN
Inventors: 胡艳杰; 吴伟强; 李靖
Original assignee: Nanjing Avis Transmission Technology Co ltd
Current assignee: Nanjing Avis Transmission Technology Co ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-12-27
Anticipated expiration: 2032-08-31

Abstract

The utility model provides a centering frock after bearing hole is beaten and is glued maintenance, its characterized in that: a plurality of axial fixing bolt mounting holes in a through hole form are formed in the supporting seat, and fixing bolts penetrate through the fixing bolt mounting holes and then are screwed into part mounting holes in the gearbox body, so that the supporting seat is fixed on the gearbox body; the rotating shaft penetrates through the bearing, the bearing is installed in a bearing hole of the gearbox body, the outer ring of the bearing is provided with a glue layer, and the rotating shaft penetrates through a shaft hole of the supporting seat; the dial indicator base is adsorbed on the rotating shaft, and the pointer is tightly attached to a section of unworn position of the bearing hole; a plurality of radial adjusting bolt mounting holes in a through screw hole form are formed in the supporting seat; the plurality of adjusting bolts are screwed in and arranged at the adjusting bolt mounting holes on the supporting seat, and the bottom ends of the adjusting bolts are propped against the shaft diameter of the rotating shaft. The utility model provides a simple structure, convenient operation, centering precision is high, and is adjustable, and it is low to bearing hole damaged condition and structure size requirement, can detect the frock of actual centering effect.

Description

Centering tool for bearing hole after gluing maintenance

Technical Field

The utility model belongs to the technical field of wind-powered electricity generation gear box and specifically relates to a centering frock after maintenance is glued to bearing hole beating.

Background

With the development of the wind power industry, the service life of the wind power gear box is longer and longer, and the conditions of maintenance and repair of the wind power gear box on the tower are more and more common. Of all types of faults, the failure of the sliding wear between the bearing and the bearing bore is very common. After the bearing and the bearing hole are subjected to skid abrasion, the bearing hole is abraded into an irregular circle or ellipse, a gap is formed between the bearing and the bearing hole, and the bearing hole can not play an effective centering and supporting role any more. And along with the continuous operation of gear box and use, the wearing and tearing condition can be more and more serious, and bearing center and dead eye deviate bigger and bigger, and simultaneously, the axis of rotation that is in the same place with the bearing assembly can no longer rotate around a fixed centre of a circle, influences the normal operating of axis of rotation to further aggravate the damage of other relevant spare parts on the axis of rotation, finally cause the gear box to destroy, unable normal operation uses.

At present, on a wind power gear box, after a bearing hole is subjected to skid abrasion, the gear box can be firstly maintained on a tower due to the fact that the maintenance cost is too high when the gear box lower frame is returned to a factory.

Maintenance is typically performed by applying glue between the bearing and the bearing bore.

When using the scheme of beating between dead eye and the bearing inner race and gluing the maintenance:

one scheme is that the bearing is directly mounted after being glued, the wear gap between the bearing and the bearing hole can be filled after the glue is solidified, and the bearing is fixed on the bearing hole to prevent the bearing outer ring from further wearing and tearing in the bearing hole. However, after the glue is applied, the bearing is installed back into the bearing hole, the glue is still in a soft flowing state, which cannot perform a centering function on the bearing, and when the center of the bearing is not coincident with the center of the bearing hole after the glue is cured, the rotation shaft assembled with the bearing and the operation of related parts on the rotation shaft are adversely affected.

The other scheme is that the bearing is glued after the bearing and the rotating shaft are disassembled, the bearing is fixed through a tool, the tool is disassembled after the glue is solidified, and then the rotating shaft and the bearing are installed in place. One end of the tool is required to be matched with an unworn bearing hole or to be centered by adopting other modes, and the other end of the tool is required to be matched with a bearing inner ring, so that a certain centering effect can be achieved. This scheme need take out earlier the bearing and rotate to unpack apart, and the axis of rotation is the interference fit installation with the bearing, has the risk of tearing open badly, and is not suitable for the inconvenient structure of dismantling of bearing. For the convenience and the maneuverability of frock dismouting, clearance fit can generally be selected when frock and dead eye and bearing hole cooperation installation, and the cooperation clearance directly produces harmful effects to bearing central point puts, influences centering effect. When the tool is installed in cooperation with the unworn bearing hole, the bearing hole is generally required to be provided with a wider end unworn position so as to ensure the reliability of tool centering installation.

In summary, the disadvantages of the prior art solutions are as follows:

1) The direct back direct mount's of gluing scheme does not have the centering to the bearing, does not have the centering to the axis of rotation promptly, only can play the effect that fixed bearing outer lane prevented continuation wearing and tearing. When the rotating shaft rotates, the rotating shaft does not rotate around the required circle center position any more, and related parts, bearings and the like on the rotating shaft are easily damaged;

2) The existing scheme or tool for centering installation by using the tool needs to disassemble the bearing, has the risk of disassembling and damaging, and is not suitable for the structure with inconvenient bearing disassembly or subsequent installation;

3) In the existing tool scheme, the fit of the tool with the bearing hole and the bearing is generally set to be clearance fit so as to ensure the operability of the tool, and the centering effect of the bearing is influenced by the fit clearance;

4) In the existing scheme of centering and mounting by using a tool, a wider section of unworn position of a bearing hole is required to ensure the reliability of tool centering;

5) According to the existing scheme, after the bearing and the rotating shaft are installed in place, the bearing, the rotating shaft and the center of the bearing hole are ensured to be positioned at the same position by means of the accuracy of the tool and the operation of an installer, and the like, so that inspection and verification are not needed.

SUMMERY OF THE UTILITY MODEL

The utility model provides a centering frock after bearing hole is beaten and is glued maintenance, its purpose is solved prior art's shortcoming, provides a simple structure, convenient operation, and centering precision is high, and is adjustable, and is low to bearing hole damage condition and structural dimension requirement, and application scope is wide, can detect the frock of actual centering effect.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a centering frock after maintenance is glued to bearing hole, its characterized in that:

a plurality of axial fixing bolt mounting holes in a through hole form are formed in the supporting seat, and fixing bolts penetrate through the fixing bolt mounting holes and then are screwed into part mounting holes in the gearbox body, so that the supporting seat is fixed on the gearbox body;

the rotating shaft penetrates through the bearing, the bearing is installed in a bearing hole of the gearbox body, the outer ring of the bearing is provided with a glue layer, and the rotating shaft penetrates through a shaft hole of the supporting seat;

the dial indicator base is adsorbed on the rotating shaft, and the pointer is tightly attached to a section of the unworn position of the bearing hole;

a plurality of radial adjusting bolt mounting holes in a through screw hole form are formed in the supporting seat;

the plurality of adjusting bolts are screwed in and installed at the adjusting bolt installation holes on the supporting seat, and the bottom ends of the adjusting bolts are propped against the shaft diameter of the rotating shaft.

The lateral wall of supporting seat is equipped with the breach as the supporting seat opening.

The bottom end face of the adjusting bolt is fixedly provided with a backing plate made of copper or nylon, and the backing plate is propped against the shaft diameter of the rotating shaft.

The base plate is provided with a groove, and the bottom end face of the adjusting bolt is inserted into the groove.

The rotating shaft penetrates through another bearing on the gearbox box body, the other bearing is installed in another unworn bearing hole of the gearbox box body, the base of the dial indicator is adsorbed on the rotating shaft, and the pointer of the dial indicator is attached to the unworn bearing hole.

The utility model discloses an useful part lies in:

1. the bearing is centered after being glued through a new centering tool structure, so that the rotating center of the rotating shaft is ensured to be consistent with the center of the bearing hole, and the normal operation of the gear box is ensured;

2. the rotating shaft and the bearing are not required to be detached, the bearing and the rotating shaft can be centered, the risk of damage caused by detachment is reduced, and the application range is wider;

3. the centering effect is hardly influenced by the tool precision and the manual operation condition, the centering effect can be adjusted, the centering precision is high, and the centering result can be measured;

4. the centering device can calibrate and center the rotating shaft and the bearing only by a narrow section of unworn bearing hole, or calibrate the centering result by means of other unworn bearing holes on the same rotating shaft, has low requirements on the size of the section of the damaged bearing hole without unworn wear and the unworn bearing hole, and has more reliable centering result and wider application range.

Drawings

The present invention will be further explained with reference to the drawings and examples.

FIG. 1 is an axial view of the supporting seat of the present invention;

FIG. 2 isbase:Sub>A cross-sectional view A-A of FIG. 1;

FIG. 3 is a schematic view of the backing plate of the present invention;

fig. 4 is an axial view of a tool assembly according to an embodiment of the present invention;

FIG. 5 is a sectional view taken along line B-B of FIG. 4;

FIG. 6 is a schematic view of the tool adjusting rotating shaft of the present invention;

fig. 7 is an assembly sectional view of another embodiment of the present invention.

Detailed Description

In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description will be briefly introduced, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other embodiments can be obtained according to the drawings without inventive labor. In order to facilitate understanding of the present invention, the present invention will be described in more detail with reference to the accompanying drawings and specific embodiments.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may be present. The terms "upper", "lower", "inner", "outer", "bottom", and the like as used herein are used in the description to indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1, 2, 3, 4, 5, and 6:

the utility model discloses demolish the part (apron or clamp plate etc.) that compresses tightly bearing 8 on the gear box 9 before using to with bearing 8 and axis of rotation 7 together from tearing open out in dead eye 90, beat the bearing 8 outer lane and glue and make the bearing outer lane have the glue film after install bearing hole 90 back to gear box 9 again.

As shown in fig. 1 and 2:

the supporting seat 2 has a shaft hole 20, is equipped with a plurality of axial fixing bolt mounting holes 21, a plurality of radial adjusting bolt mounting holes 22 and a supporting seat opening 23 on the supporting seat 2, and fixing bolt mounting hole 21 is the through-hole, and adjusting bolt mounting hole 22 is for leading to the screw hole, and supporting seat opening 23 is the breach of supporting seat 2 lateral wall.

As shown in fig. 4, 5, and 6, an embodiment of the present invention:

the fixing bolt mounting hole 21 is consistent with a part mounting hole which is used for pressing the bearing 8 on the original gearbox body 9 and is used for mounting the fixing bolt 3, the fixing bolt 3 penetrates through the fixing bolt mounting hole 21 and then is screwed into the part mounting hole, and the fixing bolt 3 is screwed up and then fixes the supporting seat 2 on the gearbox body 9; the adjusting bolt mounting hole 22 on the supporting seat 2 is used for mounting the adjusting bolt 4, so that the central position of the rotating shaft 7 can be conveniently adjusted; the supporting seat opening 23 on the supporting seat 2 is convenient for the installation and the use of the dial indicator 1.

When the centering tool is used for centering the bearing 8 and the rotating shaft 7, a plurality of fixing bolts 3 are screwed into the part mounting holes after penetrating through the fixing bolt mounting holes 21 arranged on the supporting seat 2, and the supporting seat 2 is mounted on the gearbox box body 9 and fixed; the base of the dial indicator 1 is provided with magnetism, the base of the dial indicator 1 is adsorbed on the rotating shaft 7 conveniently through the supporting seat opening 23 arranged on the supporting seat 2, and meanwhile, the dial indicator 1 is adjusted to enable the pointer to be attached to a section of the position, which is not worn, of the bearing hole 90.

The rotating shaft 7 passes through the shaft hole 20 of the support base 2.

Firstly screwing a plurality of adjusting bolts 4 into and installing the adjusting bolts at the adjusting bolt installing holes 22 on the supporting seat 2, after the adjusting bolts 4 are installed at certain positions (the position where the cushion plate 5 is convenient to install is provided with the grooves 50 as shown in figure 3 of the cushion plate 5), sleeving one side of the groove 50 of the cushion plate 5 on the bottom end surface of the adjusting bolt 4, then screwing the adjusting bolts 4, inserting the bottom end surface of the adjusting bolt 4 into the grooves 50 of the cushion plate 5, and simultaneously, propping the shaft diameter of the rotating shaft 7 by the side, without the groove, of the cushion plate 5; the backing plate 5 is made of softer materials such as copper or nylon, and can prevent the abrasion of the shaft diameter of the rotating shaft 7 caused by the backing plate 5 when the rotating shaft 7 rotates in the using process of the tool, and the groove 50 in the backing plate 5 can prevent the backing plate 5 from falling off from the adjusting bolt 4 when the adjusting bolt 4 is used for adjusting the position of the center 7' of the rotating shaft.

As shown in fig. 6:

after the tool is installed in place, the rotating shaft 7 is rotated slowly, the pointer of the dial indicator 1 is always attached to the bearing hole 90 in the process of synchronous rotation along with the rotating shaft 7, and the reading on the dial indicator 1 can change along with the rotation of the rotating shaft 7. And judging whether the center 7 'of the rotating shaft is positioned at the center 90' of the bearing hole according to the change of the reading on the dial indicator 1. When the reading of the dial indicator 1 is stable and unchanged, the rotating shaft center 7 'is positioned at the bearing hole center 90', and when the reading of the dial indicator 1 is changed along with the rotation of the rotating shaft 7, the rotating shaft center 7 'is not positioned at the bearing hole center 90'. When the rotating shaft center 7 'is not located at the position of the bearing hole center 90', the direction and the position deviation size of the rotating shaft center 7 'from the bearing hole center 90' are judged according to the reading change of the dial indicator 1. The pointer of the dial indicator 1 is adjusted to be collinear with the center 7' of the rotating shaft and the center 90' of the bearing hole (the position with the largest difference of the readings on the dial indicator 1), then the adjusting bolt 4 on the opposite side of the rotating shaft center 7' deviating from the center 90' of the bearing hole is slowly loosened (for example, two adjusting bolts 4 on the right side in fig. 6 are used for enabling the two adjusting bolts 4 to move outwards according to the arrow), the adjusting bolt 4 on the same side of the rotating shaft center 7' deviating from the center 90' of the bearing hole is simultaneously screwed (for example, two adjusting bolts 4 on the left side in fig. 6 are used for enabling the two adjusting bolts 4 to move inwards according to the arrow), the rotating shaft center 7' is pushed towards the center 90' of the bearing hole, and the adjusting condition of the rotating shaft center 7' is judged according to the changing condition of the readings on the dial indicator 1 until the adjusting condition is in place. After the rotation shaft 7 is adjusted in place, the adjusting bolts 4 around the rotation shaft are screwed down again to tightly support the rotation shaft 7, the rotation shaft 7 is coiled again for at least one circle, the change situation of the reading of the dial indicator 1 is observed, the adjustment can be carried out for many times, the reading of the dial indicator 1 does not change along with the rotation of the rotation shaft 7 until the rotation shaft 7 is coiled, and at the moment, the center 7 'of the rotation shaft is adjusted to the position of 90' of the center of the bearing hole. Standing for a period of time, after the glue is solidified, dismantling the tool and installing the original parts on the gearbox body 9 in place.

As shown in fig. 7, it is another embodiment of the present invention:

when the bearing hole 90 needing to be repaired is completely worn, the centering action can be completed by other unworn bearing holes 910 on the rotating shaft 7, the operation steps are consistent with the above steps, namely the rotating shaft 7 penetrates through the other bearing 81 on the gearbox box body 9, the bearing 81 is installed in the other bearing hole 910 of the gearbox box body 9, the bearing hole 910 is unworn, the base of the dial indicator 1 is adsorbed on the rotating shaft 7, the dial indicator 1 is adjusted at the same time, the pointer of the dial indicator can be attached to the bearing hole 910, and the operation steps are consistent with the previous embodiment.

The patent of the utility model relates to a centering frock after bearing hole is beaten and is glued maintenance, simple structure, convenient operation. The centering precision is high, adjustable, and is low to bearing hole damage condition and structure size requirement, and application scope is wide, can detect actual centering effect, can guarantee that axis of rotation center is unanimous with bearing hole central point. The supporting seat is provided with a plurality of fixing bolt mounting holes, so that the supporting seat can be mounted firmly, and the position of the rotating shaft 7 can be conveniently adjusted by the plurality of adjusting bolt mounting holes. The dial indicator 1 is adsorbed on the rotating shaft 7, the pointer is attached to the bearing hole 90, and when the dial indicator 1 rotates along with the rotating shaft 7, the deviation condition of the center 7 'of the rotating shaft and the center 90' of the bearing hole can be visually judged according to the reading change condition of the dial indicator. The backing plate 5 is made of a relatively soft material such as copper or nylon, and can prevent the tool from wearing the shaft diameter of the rotating shaft 7 in the using process of the tool. When in adjustment, the adjusting bolt 4 on the side opposite to the direction of the rotating shaft center 7 'deviating from the bearing hole center 90' is loosened and the adjusting bolt 4 on the side same as the direction of the rotating shaft center 7 'deviating from the bearing hole center 90' is tightened, so that the rotating shaft 7 can be ensured to be always fixed by the adjusting bolt 4, and the conditions of shaking, collision and the like of the rotating shaft 7 or the bearing 8 in the adjusting process are prevented.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a centering frock after maintenance is glued to bearing hole, its characterized in that: a plurality of axial fixing bolt mounting holes in a through hole form are formed in the supporting seat, and fixing bolts penetrate through the fixing bolt mounting holes and then are screwed into part mounting holes in the gearbox body, so that the supporting seat is fixed on the gearbox body; the rotating shaft penetrates through the bearing, the bearing is installed in a bearing hole of the gearbox body, the outer ring of the bearing is provided with a glue layer, and the rotating shaft penetrates through a shaft hole of the supporting seat; the dial indicator base is adsorbed on the rotating shaft, and the pointer is tightly attached to a section of the unworn position of the bearing hole; a plurality of radial adjusting bolt mounting holes in a screw hole form are formed in the supporting seat; the plurality of adjusting bolts are screwed in and installed at the adjusting bolt installation holes on the supporting seat, and the bottom ends of the adjusting bolts are propped against the shaft diameter of the rotating shaft.

2. The centering tool after the bearing hole is glued and maintained as claimed in claim 1, wherein: the lateral wall of supporting seat is equipped with the breach as the supporting seat opening.

3. The centering tool after the bearing hole is glued and maintained as claimed in claim 1, wherein: the bottom end face of the adjusting bolt is fixedly provided with a copper or nylon base plate which is propped against the shaft diameter of the rotating shaft.

4. The centering tool after the maintenance of gluing of the bearing hole of claim 3, characterized in that: the backing plate is provided with a groove, and the bottom end face of the adjusting bolt is inserted into the groove.

5. The centering tool after the bearing hole is glued and maintained as claimed in claim 1, wherein: the rotating shaft penetrates through another bearing on the gearbox box body, the other bearing is installed in another unworn bearing hole of the gearbox box body, the base of the dial indicator is adsorbed on the rotating shaft, and the pointer of the dial indicator is attached to the unworn bearing hole.