CN216691866U - Main bearing structure of heading machine - Google Patents
Main bearing structure of heading machine Download PDFInfo
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- CN216691866U CN216691866U CN202220203020.9U CN202220203020U CN216691866U CN 216691866 U CN216691866 U CN 216691866U CN 202220203020 U CN202220203020 U CN 202220203020U CN 216691866 U CN216691866 U CN 216691866U
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- outer ring
- main bearing
- retainer
- elastic steel
- bearing structure
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Abstract
The utility model discloses a main bearing structure of a tunneling machine, which comprises an inner ring, an outer ring, a retainer and elastic steel; due to the elasticity and the buffering performance of the elastic steel, the situation that the retainer moves up and down or even is blocked due to alternating load and impact load in the operation process of the main bearing can be reduced, the stable operation of the rolling body is ensured, the phenomenon that part of the rolling body changes from rolling into sliding due to the fact that the retainer is inclined is avoided, the phenomena that accelerated rolling path fatigue is caused, and the tunneling machine is suddenly stopped due to the blocking of the rolling body under the serious condition are avoided, meanwhile, the elastic steel is in contact with the retainer, and abrasion between the retainer and the ferrule can be effectively avoided.
Description
Technical Field
The utility model relates to the field of tunneling machines, in particular to a main bearing structure of a tunneling machine.
Background
Because the entry driving machine work condition is abominable, and the main bearing bears very big impact, alternation heavy load and unbalance loading as one of the key spare part of entry driving machine, and the problem that current entry driving machine main bearing structure exists is: under extreme impact unbalance loading, the retainer is staggered and inclined due to the impact unbalance loading, so that the operation of the rolling body is interfered, and the impact abrasion between the retainer and the ferrule is aggravated, so that the service life of the main bearing is greatly shortened, and the construction of the heading machine is influenced.
In summary, a main bearing structure of a heading machine is urgently needed to solve the problems of poor stability of a retainer and serious abrasion between the retainer and a ferrule in the prior art.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a main bearing structure of a heading machine, which aims to solve the problems of low stability of a retainer and serious abrasion between the retainer and a ferrule in the prior art, and the specific technical scheme is as follows:
a main bearing structure of a heading machine comprises an outer ring, an inner ring, a retainer and elastic steel;
the inner circumferential surface of the outer ring and the outer circumferential surface of the inner ring are provided with mounting grooves along the circumferential direction of the main bearing; the retainer is arranged between the inner ring and the outer ring; annular elastic steel is installed in the mounting groove, and elastic steel contacts with the holder.
Preferably, in the technical scheme, the elastic steel is spring steel or high-hardenability bearing steel.
Preferably, the elastic steel material comprises a plurality of sections of elastic steel material single pieces connected along the circumferential direction.
Preferably, the mounting groove on the inner circumferential surface of the outer ring and the mounting groove on the outer circumferential surface of the inner ring are arranged along the radial direction of the main bearing.
Preferably, the mounting groove is a rectangular groove; the section of the elastic steel is circular, and the diameter of the circle is 0.3-1.5mm larger than the depth of the mounting groove.
Preferably, the diameter of the circle is 0.2-1mm smaller than the width of the mounting groove.
Preferably, in the above technical solution, the outer ring includes a first outer ring and a second outer ring which are coaxially connected; the first outer ring and the second outer ring are both sleeved with the inner ring.
According to the preferable technical scheme, the retainer and the elastic steel are arranged between the first outer ring and the inner ring and between the second outer ring and the inner ring.
The technical scheme of the utility model has the following beneficial effects:
(1) the main bearing structure of the heading machine comprises an inner ring, an outer ring, a retainer and elastic steel; due to the elasticity and the buffering performance of the elastic steel, the situation that the retainer moves up and down or even is clamped due to alternating load and impact load in the operation process of the main bearing can be reduced, the stable operation of the rolling body is ensured, the phenomenon that part of the rolling body changes from rolling into sliding due to the fact that the retainer is inclined is avoided, the phenomena that accelerated rolling path fatigue is caused, and the heading machine is suddenly stopped due to the fact that the rolling body is clamped under the serious condition are avoided, meanwhile, the elastic steel is in contact with the retainer, and abrasion between the retainer and a ferrule (namely an inner ring or an outer ring) can be effectively avoided.
(2) The elastic steel material is spring steel or high-hardenability bearing steel (preferably spring steel), the spring steel has good elasticity and buffering performance, and can resist permanent deformation in a certain range, so that the situation that the retainer moves up and down and even is clamped due to alternating load and impact load can be reduced; the elastic steel is divided into the plurality of sections of elastic steel single pieces which are connected in the circumferential direction, so that the elastic steel is convenient to produce, install and disassemble.
(3) The mounting groove on the inner circumferential surface of the outer ring and the mounting groove on the outer circumferential surface of the inner ring are arranged along the radial direction of the main bearing, so that the retainer is conveniently compressed from two ends in the radial direction, and the structural stability is ensured.
(4) The diameter of the elastic steel is 0.3-1.5mm larger than the depth of the mounting groove, when the main bearing runs for a long time under heavy load and unbalance load, the elastic steel is abraded, but the elastic steel generates certain expansion phenomenon due to long-time heating to compress the retainer, and meanwhile, the elastic steel has elastic performance and can play a role in buffering, so that the retainer is prevented from ceaseless impact collision caused by long-time rotation, the damage to the retainer and the flange is avoided, and when the main bearing stops running and is cooled, the expansion amount of the elastic steel is reduced, so that the disassembly is convenient.
(5) The diameter of the elastic steel material is 0.2-1mm smaller than the width of the mounting groove, so that the elastic steel material is convenient to mount and dismount.
(6) The outer ring of the utility model comprises a first outer ring and a second outer ring which are coaxially connected; the outer ring of the utility model adopts split design, and is convenient for production, installation and transportation.
(7) According to the utility model, the retainer and the elastic steel are arranged between the first outer ring and the inner ring and between the second outer ring and the inner ring, so that the stability of the structure is ensured conveniently.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model.
In the drawings:
fig. 1 is a schematic view of a main bearing structure of the heading machine of the embodiment;
FIG. 2 is a partial schematic view of FIG. 1 (without the cage shown);
wherein, 1, an outer ring; 1.1, a first outer ring; 1.2, a second outer ring; 2. an inner ring; 3. a holder; 4. elastic steel material; 5. mounting grooves; 6. and a rolling body.
Detailed Description
Embodiments of the utility model will be described in detail below with reference to the drawings, but the utility model can be implemented in many different ways, which are defined and covered by the claims.
The embodiment is as follows:
a main bearing structure of a heading machine comprises an outer ring 1, an inner ring 2, a retainer 3 and elastic steel 4 (four groups of elastic steel are shown in the embodiment), as shown in fig. 1-2, the main bearing structure specifically comprises the following components:
as shown in fig. 1, the outer ring 1 and the inner ring 2 are sleeved, the outer ring 1 includes a first outer ring 1.1 and a second outer ring 1.2, the first outer ring 1.1 is connected with the second outer ring 1.2, and the first outer ring 1.1 and the second outer ring 1.2 are coaxially arranged; the first outer ring 1.1 and the second outer ring 1.2 are both sleeved with the inner ring 2.
As shown in fig. 1, the cage 3 is disposed between the inner ring 2 and the outer ring 1, specifically, the embodiment illustrates two sets of cages 3, the cages 3 are disposed between the first outer ring 1.1 and the inner ring 2 and between the second outer ring 1.2 and the inner ring 2, and rolling elements 6 are disposed in the cages 3. And elastic steel 4 is arranged at the two ends of each group of the retainer 3 in the radial direction of the main bearing.
As shown in fig. 1 and 2, the inner circumferential surface of the first outer ring 1.1 and the outer circumferential surface of the inner ring 2 are both provided with mounting grooves 5 along the circumferential direction thereof, the mounting grooves 5 on the first outer ring 1.1 and the inner ring 2 are radially and correspondingly arranged along the main bearing, the elastic steel 4 is correspondingly mounted in the mounting grooves 5, the elastic steel 4 can contact with the retainer 3 (specifically, contact with the guide block of the retainer 3), and the two sets of elastic steel 4 which are radially and correspondingly arranged can press the retainer 3 in the raceway to avoid its play.
As shown in fig. 1 and 2, the inner circumferential surface of the second outer ring 1.2 and the outer circumferential surface of the inner ring 2 are also provided with mounting grooves 5 along the circumferential direction, the mounting grooves 5 on the second outer ring 1.2 and the inner ring 2 are correspondingly arranged along the radial direction of the main bearing, the elastic steel material 4 is mounted in the mounting grooves 5, and the elastic steel material 4 is used for pressing the retainer 3 between the second outer ring 1.2 and the inner ring 2.
As shown in fig. 2, the elastic steel material 4 is spring steel or high hardenability bearing steel (in the present embodiment, spring steel is preferable), and the spring steel has an annular overall shape and a circular cross-sectional shape; the elastic steel material 4 comprises a plurality of sections (preferably three sections in the embodiment) of elastic steel material single pieces, and the plurality of sections of elastic steel material single pieces are connected to form a ring. The spring steel of the embodiment can effectively improve the hardness after quenching treatment.
As shown in fig. 2, the mounting groove 5 is a rectangular groove (i.e., the cross-sectional shape is rectangular), and the depth of the rectangular groove (i.e., the depth in the radial direction of the main bearing) is L1The width of the rectangular groove is L2The diameter of the elastic steel 4 is R; r is greater than L10.3-1.5mm (preferably 1mm in this embodiment), and R is less than L20.2-1mm (0.5 mm is preferred in this embodiment).
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A main bearing structure of a heading machine is characterized by comprising an outer ring (1), an inner ring (2), a retainer (3) and elastic steel (4);
the inner circumferential surface of the outer ring (1) and the outer circumferential surface of the inner ring (2) are provided with mounting grooves (5) along the circumferential direction of the main bearing; the retainer (3) is arranged between the inner ring (2) and the outer ring (1); the annular elastic steel (4) is arranged in the mounting groove (5), and the elastic steel (4) is in contact with the retainer (3).
2. A main bearing structure of a heading machine according to claim 1, characterized in that said resilient steel material (4) is spring steel or high hardenability bearing steel.
3. A main bearing structure of a heading machine according to claim 2, wherein said resilient steel material (4) comprises a plurality of sections of resilient steel material connected along its circumference.
4. The main bearing structure of the heading machine according to claim 1, wherein the mounting grooves (5) on the inner peripheral surface of the outer ring (1) and the mounting grooves (5) on the outer peripheral surface of the inner ring (2) are provided in correspondence with each other in the radial direction of the main bearing.
5. The main bearing structure of the heading machine according to any one of claims 1 to 4, wherein the mounting groove (5) is a rectangular groove; the section of the elastic steel (4) is circular, and the diameter of the circular shape is 0.3-1.5mm greater than the depth of the mounting groove (5).
6. A main bearing structure of a heading machine according to claim 5, wherein the diameter of the circle is 0.2-1mm smaller than the width of the mounting groove (5).
7. Main bearing structure of a heading machine according to claim 1, characterized in that said outer ring (1) comprises a first outer ring (1.1) and a second outer ring (1.2) coaxially connected; the first outer ring (1.1) and the second outer ring (1.2) are sleeved with the inner ring (2).
8. The main bearing structure of the heading machine according to claim 7, wherein a retainer (3) and an elastic steel material (4) are arranged between the first outer ring (1.1) and the inner ring (2) and between the second outer ring (1.2) and the inner ring (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220203020.9U CN216691866U (en) | 2022-01-25 | 2022-01-25 | Main bearing structure of heading machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220203020.9U CN216691866U (en) | 2022-01-25 | 2022-01-25 | Main bearing structure of heading machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216691866U true CN216691866U (en) | 2022-06-07 |
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ID=81827189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220203020.9U Active CN216691866U (en) | 2022-01-25 | 2022-01-25 | Main bearing structure of heading machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216691866U (en) |
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2022
- 2022-01-25 CN CN202220203020.9U patent/CN216691866U/en active Active
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