CN220218312U - Assembly fixture for outer ring and bearing seat of main shaft bearing of wind generating set - Google Patents

Abstract

The utility model discloses a wind generating set main shaft bearing outer ring and bearing seat assembly fixture which comprises a base, a fixed plate, fixing screws, supporting bases, tensioning seats, tensioning screws and fastening screws, wherein a plurality of guide grooves are uniformly distributed on the base along the circumferential direction, a fixed plate is movably embedded in each guide groove, the supporting bases are in one-to-one correspondence with the fixing plates, guide rails capable of moving along the guide grooves are formed at the bottom of each supporting base, the supporting bases are detachably connected with the fixed plates through the fixing screws, one side, far away from the center of the base, of each supporting base is provided with the tensioning seat, the tensioning seats are formed by butt joint of two half tensioning structures through the fastening screws, the bottoms of the tensioning structures are provided with guide structures capable of moving along the guide grooves, the tensioning screws are in one-to-one correspondence with the tensioning seats, and the tensioning screws are fixed on the bearing seats, and then the heads of the tensioning screws are placed between the two tensioning structures of the corresponding tensioning seats. The utility model can effectively improve the bearing compacting effect and the assembly efficiency.

Description

Assembly fixture for outer ring and bearing seat of main shaft bearing of wind generating set

Technical Field

The utility model relates to the technical field of wind generating sets, in particular to an assembly fixture for an outer ring and a bearing seat of a main shaft bearing of a wind generating set.

Background

At present, the main bearing of the large megawatt wind generating set mostly adopts two single row tapered roller bearings as front and rear bearings, and the assembly steps of the bearing outer ring and the bearing seat are divided into: heating the front bearing seat, assembling and compacting the outer ring of the front bearing, waiting for the cooling of the front bearing, dismantling the clamping tool, overturning the front bearing seat, heating the rear bearing seat, assembling and compacting the outer ring of the rear bearing. The cooling waiting time of the front bearing is longer and the bearing matching is sensitive to the pressing force in the assembly process, and the original mode can not meet the requirements of the assembly efficiency and the pressing force.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides an assembly fixture for a main shaft bearing outer ring and a bearing seat of a wind generating set, which can effectively improve the compression effect and the assembly efficiency of the bearing.

The aim of the utility model can be achieved by adopting the following technical scheme:

the utility model provides a wind generating set main shaft bearing outer lane and bearing frame assembly fixture, includes base, fixed plate, set screw, supporting base, take-up seat, take-up screw and fastening screw, the base is discoid, and it is gone up along circumference equipartition has a plurality of guide ways along radial extension, the transversal of guide way personally submits the inverted T-shaped structure, and the horizontal limit of inverted T-shaped structure is the lower tank, and the vertical limit is the upper tank, and every lower tank is embedded to move about has a fixed plate, the quantity of supporting base has a plurality of, and its quantity is consistent and one-to-one with the quantity of fixed plate, and the bottom of every supporting base is formed with the guide rail that can follow the upper tank and remove supporting base through the guide rail and make its external diameter consistent with the external diameter of bearing, supporting base passes through the fixed screw detachable connection with the fixed plate of correspondence, the top of supporting base is formed with the location step that is used for installing the bearing outer lane, and the one side that every supporting base kept away from the base centre of a circle is equipped with a take-up seat, take-up seat is by two half same take-up structures through the take-up screw of fastening screw that the take-up seat is formed along the take-up screw that the quantity of two looks corresponds to the top of each supporting base, and the take-up screw that can be placed in the take-up screw along the bearing frame to the corresponding to the top that is formed along the take-up screw to the quantity of two corresponding to take-up screw, and take-up screw.

Further, the cross section of supporting base is L shape, including bottom plate and vertical setting's curb plate, the bottom of bottom plate is formed with the guide rail that can follow the groove and remove, the outer peripheral face of curb plate is the arcwall face, and its top outside is formed with the location step that is used for installing the bearing inner race.

Further, a groove capable of accommodating the head of the tensioning screw is formed in the tensioning structure.

Further, the fastening screws are two.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

1. according to the utility model, the bearing outer ring is fixed on the assembly tool, and then the bearing outer ring and the bearing outer ring are mounted in a matched manner by hoisting the bearing seat, so that the bearing outer ring can be pressed by utilizing the dead weight of the bearing seat, and the pressing effect is more reliable.

2. The rear bearing can be assembled without waiting for cooling and overturning the front bearing seat after the front bearing is assembled, so that the time is saved, the assembly efficiency is improved, and the cost is reduced.

3. The tensioning seat and the supporting base can slide along the guide groove, so that bearings with different sizes can be used universally, and each bearing does not need to independently customize a tool, thereby reducing the cost.

Drawings

Fig. 1 is a front view of an assembly fixture of the present utility model.

Fig. 2 is a partial enlarged view at B in fig. 1.

Fig. 3 is a cross-sectional view taken along A-A of fig. 1.

Fig. 4 is a partial enlarged view at C in fig. 3.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments, and all other embodiments obtained by persons of ordinary skill in the art without making any inventive effort based on the embodiments of the present utility model are within the scope of protection of the present utility model.

As shown in fig. 1 to 4, the present embodiment provides a tool for assembling a main shaft bearing outer ring and a bearing seat of a wind generating set, which comprises a base 1, a fixing plate 2, fixing screws 3, a supporting base 4, a tensioning base 5, tensioning screws 6 and fastening screws 7, wherein the base 1 is disc-shaped, a plurality of guide grooves extending along radial direction are uniformly distributed on the base along circumferential direction, the cross section of each guide groove is in an inverted T-shaped structure, the horizontal side of the inverted T-shaped structure is a lower groove 101, the vertical side is an upper groove 102, each lower groove 101 is movably embedded with one fixing plate 2, the number of the supporting bases 4 is in one-to-one correspondence with the number of the fixing plates 2, a guide rail (not shown in the figure) capable of moving along the upper groove 102 is formed at the bottom of each supporting base 4, the outer diameter of the supporting base 4 is in accordance with the outer diameter of the bearing outer ring through the guide rail, the support base 4 is detachably connected with the corresponding fixing plate 2 through fixing screws 3, the top of the support base 4 is provided with a positioning step for installing the bearing outer ring, the bearing outer ring is installed on the support base 4 through the positioning step, one side of each support base 4 far away from the center of the circle of the base 1 is provided with a tensioning seat 5, the tensioning seats 5 are formed by abutting two half identical tensioning structures 501 through two fastening screws 7, the bottom of each tensioning structure 501 is provided with a guide structure (not shown in the figure) capable of moving along a guide groove, the number of the tensioning screws 6 is consistent with that of the tensioning seats 5 and corresponds to that of the tensioning seats one by one, the plurality of the tensioning screws 6 are circumferentially fixed on a bearing seat, then the bearing seat is hoisted to the top of the bearing outer ring, the head of each tightening screw 6 is placed between the corresponding two tightening structures 501, which are tightened by the two tightening screws 7 so that the bearing housing compresses the bearing outer ring.

Specifically, the cross section of the support base 4 is L-shaped, and comprises a bottom plate 401 and a side plate 402 vertically arranged, a guide rail capable of moving along the upper groove is formed at the bottom of the bottom plate 401, the outer circumferential surface of the side plate 402 is an arc-shaped surface, and a positioning step 403 for installing a bearing outer ring is formed at the outer side of the top of the side plate.

Specifically, each tensioning structure 501 has a recess 502 therein capable of receiving the head of the tensioning screw 6.

The application method of the utility model comprises the following steps:

1) The base is horizontally placed on the ground, and the supporting base is moved through the guide rail, so that the outer diameter of the supporting base is consistent with the outer diameter of the outer ring of the front bearing;

2) The front bearing outer ring is mounted on the supporting base through the positioning step, and then the supporting base is connected with the fixing plate through the fixing screw to position the front bearing outer ring;

3) Adjusting the circumferential position of the tensioning seat on the base;

4) Vertically hoisting the front bearing seat which is heated and is connected with the tensioning screws in advance to the top of the outer ring of the front bearing, and then connecting the tensioning screws with the tensioning seats in a one-to-one correspondence manner;

5) The tightening seat is screwed up by the fastening screw, so that the front bearing seat further compresses the outer ring of the front bearing.

When the circumferential pressing force of the outer ring of the current bearing is different, the adjustment can be performed by adjusting fastening screws at different positions. Meanwhile, as the front bearing seat is downwards arranged, the installation of the outer ring of the rear bearing can be synchronously completed in the cooling process of the front bearing. Compared with the prior tool, the tool has more reliable compacting effect and higher assembly efficiency.

The above description is only of the preferred embodiments of the present utility model, but the protection scope of the present utility model is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive conception of the present utility model equally within the scope of the disclosure of the present utility model.

Claims (4)

1. The utility model provides a wind generating set main shaft bearing outer lane and bearing frame assembly fixture which characterized in that: including base, fixed plate, set screw, supporting base, take-up seat, take-up screw and fastening screw, the base is discoid, and it is gone up along circumference equipartition has a plurality of guide ways along radial extension, the transversal reverse T shape structure that personally submits of guide way, and reverse T shape structure's horizontal limit is the lower tank, and vertical limit is the upper tank, and every lower tank internal activity inlays and is equipped with a fixed plate, the quantity of supporting base has a plurality ofly, and its quantity is identical and the one-to-one with the quantity of fixed plate, and the bottom of every supporting base is formed with the guide rail that can follow the upper tank and remove supporting base through the guide rail thereby makes its external diameter identical with the external diameter of bearing outer lane, supporting base passes through the fixed screw detachable connection with the fixed plate of correspondence, supporting base's top is formed with the location step that is used for installing bearing outer lane, and one side that every supporting base kept away from the base centre of a circle is equipped with a take-up seat through fastening screw, take-up seat forms through the fastening screw butt joint by two half the same take-up structure, and the bottom of every take-up structure is formed with the guide way along the quantity of fixed plate and the one-to-up screw that can remove along the external diameter identical bearing outer lane, thereby take-up screw is placed to the top along the bearing seat with the corresponding take-up screw to a plurality of bearing outer lane, and take-up screw is placed to the take-up screw along the corresponding to take-up structure.

2. The wind generating set main shaft bearing outer ring and bearing seat assembly fixture according to claim 1, wherein: the cross section of supporting base is L shape, including bottom plate and vertical setting's curb plate, the bottom of bottom plate is formed with the guide rail that can follow the groove and remove, the outer peripheral face of curb plate is the arcwall face, and its top outside is formed with the location step that is used for installing the bearing inner race.

3. The wind generating set main shaft bearing outer ring and bearing seat assembly fixture according to claim 1, wherein: the tensioning structure is internally provided with a groove capable of accommodating the head of the tensioning screw.

4. The wind generating set main shaft bearing outer ring and bearing seat assembly fixture according to claim 1, wherein: the number of the fastening screws is two.