CN212222188U - Wind-powered electricity generation gear box does not have outer lane cylindrical roller bearing assembly hoist - Google Patents

Abstract

The utility model provides a wind-powered electricity generation gear box does not have outer lane cylindrical roller bearing assembly hoist, include: the lifting bolt, the rotary table, the claw piece, the mandrel and the guide flat key; when the claw piece fixing device is used, the claw pieces are embedded into the inner hole of the bearing one by one, and the equal distance between every two adjacent claw pieces and the arc surface of each claw piece are ensured to be attached to the R angle at the bottom of the inner hole of the bearing; the utility model mainly utilizes the matching of the arc surfaces of a plurality of independent claw sheets and the R angle of the inner hole of the bearing, puts the mandrel part into the center of the independent claw sheets, realizes the fixation of the claw sheets in the circumferential direction, and finally utilizes the turntable to connect the claw sheets and the mandrel so as to realize the hoisting of the bearing; the problems of collision and scratch which cannot be avoided in the existing installation method are solved, the step of installing the cylindrical roller bearing without the outer ring is simplified, and the production efficiency and the assembly safety are greatly improved.

Description

Wind-powered electricity generation gear box does not have outer lane cylindrical roller bearing assembly hoist

Technical Field

The utility model relates to a wind-powered electricity generation gear box does not have outer lane cylindrical roller bearing assembly hoist.

Background

With the increasingly competitive market of wind power gear boxes, gear box manufacturers face the problem of "upgrading and reducing weight". The use of the outer-ring-free cylindrical roller bearing is an effective method for solving the problem.

The cylindrical roller bearing without the outer ring consists of an inner ring, a retainer and a rolling body, and an inner hole of a planet wheel matched with the cylindrical roller bearing replaces the outer ring of the bearing to form an inner raceway. Therefore, the size of each component in the planetary mechanism can be reduced in the design process of the gear box, so that the aim of reducing the weight is fulfilled; the problem of bearing outer ring creep is avoided due to the fact that a bearing outer ring in a bearing inner hole is eliminated, and the fault rate of the gear box is greatly reduced.

The hanger used in the assembling process of the outer-ring-free cylindrical roller bearing and the planet wheel is a cloth belt, and the hanger has the defect that the position relation between the bearing and the inner hole of the planet wheel needs to be adjusted manually for many times in the assembling process, so that the labor intensity of an operator is increased, the risk of scratching the inner hole of the planet wheel and the rolling body of the bearing is increased, and the assembling efficiency is reduced.

The market urgently needs to develop an outer ring-free cylindrical roller bearing assembling tool which is simple in structure, low in manufacturing cost and convenient to install.

Disclosure of Invention

According to the technical problem provided by the invention, the hanger for assembling the cylindrical roller bearing without the outer ring of the wind power gear box is provided. The utility model discloses the circular arc face and the bearing hole R angle cooperation of the independent claw piece of main utilization polylith, put into the center of the independent claw piece of polylith with the mandrel part, realized the fixed of claw piece circumferencial direction, utilize the carousel to connect claw piece and the hoist and mount of mandrel in order to realize the bearing at last.

The utility model discloses a technical means as follows:

the utility model provides a wind-powered electricity generation gear box does not have outer lane cylindrical roller bearing assembly hoist, includes:

the lifting bolt, the rotary table, the claw piece, the mandrel and the guide flat key;

the mandrel is a stepped shaft;

when the claw pieces are used, the claw pieces are embedded into the inner hole of the bearing one by one, and the equal distance between every two adjacent claw pieces and the R angle at the bottom of the inner hole of the bearing are ensured by the arc surfaces of the claw pieces;

the mandrel is in clearance fit with a hole formed by the inner wall of the claw sheet embedded in the inner hole of the bearing, and the clearance value range is as follows: 0.1mm-0.3 mm;

key grooves which are axially arranged and have the same number as the claw pieces are uniformly distributed on the mandrel in the circumferential direction, guide flat keys are assembled in the key grooves, and the front ends of the guide flat keys radially protrude out of the outer surface of the mandrel after being assembled and are just embedded into the gaps between two adjacent claw pieces;

the guide flat key is in clearance fit with the claw piece in the inner hole of the bearing, namely the width D of a clearance part of the front end embedded claw piece after the guide flat key is assembled is smaller than the clearance L of the claw piece, and the difference value of the width D and the clearance L is 2 mm;

the turntable is a ring-shaped element, the diameter of the turntable is smaller than the diameter of a hole formed by the inner wall of the claw piece embedded in the inner hole of the bearing and larger than the diameter of a smaller hole formed by the inner wall of the limiting baffle table of the claw piece,

through grooves with the same number as the claw pieces are uniformly distributed in the circumferential direction of the turntable, and the shape and the size of the through grooves meet the requirement that the radial protruding parts of the limiting blocking platforms of the claw pieces penetrate through the through grooves in the axial direction;

a mandrel through groove is arranged on the mandrel at a position corresponding to the through groove of the turntable in the circumferential direction, and the shape ruler also meets the requirement that the radial protruding part of the limiting blocking table of the claw piece penetrates through the mandrel through groove in the axial direction;

the inner hole of the turntable is in clearance fit with the shaft diameter at the top of the mandrel;

and machining a threaded hole at the part, protruding out of the inner hole of the rotary table, of the top of the mandrel, wherein the threaded hole is used for installing an eyebolt.

Further, the claw pieces are usually three.

Adopt above-mentioned technical scheme the utility model discloses a theory of operation:

1. installing independent claw sheets (taking 3 sheets as an example) into an inner hole of a bearing respectively, wherein the arc surfaces of the claw sheets are attached to the R angle of the inner hole of the bearing, the claw sheets are uniformly distributed along the circumferential direction, and the distance between the claw sheets is ensured to be equal in the installation process;

2. the mandrel is arranged in an inner hole formed by three independent claw sheets, three mandrel through grooves of the mandrel are arranged in the inner hole along the claw sheet limiting blocking table, and three guiding flat keys of the mandrel are required to be arranged in a gap between the claw sheets during arrangement;

3. loading the turntable into the shaft diameter of the small end (top end) of the mandrel, wherein three through grooves of the turntable are arranged in the inner hole along the claw limiting blocking platform during loading, rotating the turntable by a certain angle after the installation is finished, and ensuring that the through grooves of the turntable are not on the same axis with the limiting blocking platform of the claw;

4. finally, mounting a lifting ring screw on the shaft diameter end face of the small end (top end) of the mandrel;

5. when the claw pieces are disassembled, the turntable is rotated, the through groove position of the turntable is adjusted, the through groove of the turntable, the through groove of the mandrel and the limiting blocking table of the claw pieces are ensured to be on the same axis, the mandrel is drawn out, and then three independent claw pieces are taken out one by one.

Compared with the prior art, the utility model has the advantages of it is following:

1. the structure is simple, the cost is low, and the maintenance is convenient;

2. the cylindrical roller bearing without the outer ring can be smoothly installed in the inner hole of the planet wheel, the collision and scratch generated in the assembling process of the bearing rolling body and the planet wheel are avoided, the assembling efficiency is improved, and the labor intensity of an operator is reduced.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a front view of a cylindrical roller bearing hanger without an outer ring;

FIG. 2 is a top view of the outer race-free cylindrical roller bearing hanger;

FIG. 3 shows an assembly drawing of a hanger and a bearing for a cylindrical roller bearing without an outer ring.

In the figure: 1. a lifting eye screw;

2. a turntable; 21. a through groove;

3. a claw piece; 31. a limiting stop table;

4. a mandrel; 41. a mandrel through slot; 42. the diameter of the shaft; 43. a keyway;

5. a guiding flat key;

6. slotted stud screws.

Detailed Description

It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below 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 following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. Any specific values in all examples shown and discussed herein are to be construed as exemplary only and not as limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element in question must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

As shown in fig. 1 to 3, the utility model provides a wind-powered electricity generation gear box does not have outer lane cylindrical roller bearing assembly hoist, include:

the lifting bolt comprises a lifting ring bolt 1, a rotary table 2, a claw piece 3, a mandrel 4 and a guide flat key 5;

the mandrel 4 is a stepped shaft;

the claw pieces 3 are more than or equal to 2, one end of each claw piece 3 is an arc surface matched with an R angle of the bearing inner hole, and the other end of each claw piece 3 is a limiting blocking platform 31 protruding in the radial direction;

the mandrel 4 is in clearance fit with a hole formed by the inner wall of the claw piece 3 embedded in the inner hole of the bearing, and the clearance value range is as follows: 0.1mm-0.3 mm;

key grooves 43 which are axially arranged and have the same number as the claw pieces 3 are uniformly distributed on the mandrel 4 in the circumferential direction, guide flat keys 5 are assembled in the key grooves 43, and the front ends of the guide flat keys 5 radially protrude out of the outer surface of the mandrel 4 after being assembled and are just embedded into the gaps between two adjacent claw pieces 3;

the guide flat key 5 is in clearance fit with the claw piece 3 in the inner hole of the bearing, namely the width D of a clearance part of the guide flat key 5, which is assembled (fixed with the mandrel 4 into a whole through the slotted stud bolt 6), and the front end of the guide flat key is embedded into the claw piece 3 is smaller than the clearance L of the claw piece 3, and the difference between the width D and the clearance L is 2 mm;

the turntable 2 is a ring-shaped element, the diameter of the turntable is smaller than the diameter of a hole formed by the inner wall of the claw piece 3 embedded in the bearing inner hole and larger than the diameter of a smaller hole formed by the inner wall of the limiting stop table 31 of the claw piece 3,

through grooves 21 with the same number as the claw pieces 3 are uniformly distributed in the circumferential direction of the turntable 2, and the shape and the size of the through grooves 21 meet the requirement that the radial protruding parts of the limiting blocking platforms 31 of the claw pieces 3 penetrate through in the axial direction;

a mandrel through groove 41 which is provided with a shape ruler and also satisfies that the axial direction of the radial protruding part of the limiting stop table 31 of the claw piece 3 penetrates through is arranged on the circumferential direction of the mandrel 4 corresponding to the through groove 21 of the rotary table 2;

the inner hole of the turntable 2 is in clearance fit with the top shaft diameter 42 of the mandrel 4;

a threaded hole is processed on the top of the mandrel 4 and protrudes out of the inner hole part of the rotary table 2, and the threaded hole is used for installing the lifting bolt 1.

Further, the claw 3 is generally three.

Adopt above-mentioned technical scheme the utility model discloses a theory of operation:

1. installing independent claw sheets (taking 3 sheets as an example) into an inner hole of a bearing respectively, attaching the arc surface of each claw sheet 3 to the inner hole R of the bearing at an angle, uniformly distributing the claw sheets 3 along the circumferential direction, and ensuring the equal distance between the claw sheets 3 in the installation process;

2. the mandrel 4 is arranged in an inner hole formed by three independent claw pieces 3, three mandrel through grooves 41 of the mandrel 4 are arranged in the inner hole along the limiting blocking table 31 of the claw pieces 3, and three guiding flat keys 5 of the mandrel 4 are required to be arranged in a gap between the claw pieces 3 and the claw pieces 3 during arrangement;

3. the turntable 2 is arranged in the shaft diameter of the small end (top end) of the mandrel 4, three through grooves 21 of the turntable 2 are arranged in the inner hole along the limiting blocking platform 31 of the claw piece 3 during the arrangement, the turntable 2 is rotated by a certain angle after the arrangement is finished, the through grooves 21 of the turntable 2 are ensured, and the through groove 41 of the mandrel and the limiting blocking platform 31 of the claw piece 3 are not on the same axis;

4. finally, mounting a lifting ring screw 1 on the end surface of the shaft diameter at the small end (top end) of the mandrel 4;

5. during disassembly, the turntable 2 is rotated and the position of the through groove 21 of the turntable is adjusted to ensure that the through groove 21 of the turntable 2, the through groove 41 of the mandrel and the limiting blocking table 31 of the claw piece 3 are on the same axis, the mandrel 4 is pulled out, and then three independent claw pieces 3 are taken out one by one.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (2)

1. The utility model provides a wind-powered electricity generation gear box does not have outer lane cylindrical roller bearing assembly hoist which characterized in that includes:

the lifting bolt, the rotary table, the claw piece, the mandrel and the guide flat key;

the mandrel is a stepped shaft;

when the claw pieces are used, the claw pieces (3) are embedded into the inner hole of the bearing one by one, and the equal distance between every two adjacent claw pieces and the arc surface of each claw piece are ensured to be attached to the R angle at the bottom of the inner hole of the bearing;

the mandrel is in clearance fit with a hole formed by the inner wall of the claw sheet embedded in the inner hole of the bearing, and the clearance value range is as follows: 0.1mm-0.3 mm;

key grooves which are axially arranged and have the same number as the claw pieces are uniformly distributed on the mandrel in the circumferential direction, guide flat keys are assembled in the key grooves, and the front ends of the guide flat keys radially protrude out of the outer surface of the mandrel after being assembled and are just embedded into the gaps between two adjacent claw pieces;

the guide flat key is in clearance fit with the claw piece in the inner hole of the bearing, namely the width D of a clearance part of the front end embedded claw piece after the guide flat key is assembled is smaller than the clearance L of the claw piece, and the difference value of the width D and the clearance L is 2 mm;

the turntable is a ring-shaped element, the diameter of the turntable is smaller than the diameter of a hole formed by the inner wall of the claw piece embedded in the inner hole of the bearing and larger than the diameter of a smaller hole formed by the inner wall of the limiting baffle table of the claw piece,

through grooves with the same number as the claw pieces are uniformly distributed in the circumferential direction of the turntable, and the shape and the size of the through grooves meet the requirement that the radial protruding parts of the limiting blocking platforms of the claw pieces penetrate through the through grooves in the axial direction;

a mandrel through groove is arranged on the mandrel at a position corresponding to the through groove of the turntable in the circumferential direction, and the shape ruler also meets the requirement that the radial protruding part of the limiting blocking table of the claw piece penetrates through the mandrel through groove in the axial direction;

the inner hole of the turntable is in clearance fit with the shaft diameter at the top of the mandrel;

and machining a threaded hole at the part, protruding out of the inner hole of the rotary table, of the top of the mandrel, wherein the threaded hole is used for installing an eyebolt.

2. The wind power gearbox outer-ring-free cylindrical roller bearing assembly lifting appliance according to claim 1,

the claw sheets are three.

Images