CN211624155U - Seal structure of rotary drilling rig power head - Google Patents
Seal structure of rotary drilling rig power head Download PDFInfo
- Publication number
- CN211624155U CN211624155U CN202020112612.0U CN202020112612U CN211624155U CN 211624155 U CN211624155 U CN 211624155U CN 202020112612 U CN202020112612 U CN 202020112612U CN 211624155 U CN211624155 U CN 211624155U
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- Prior art keywords
- boss
- groove
- power head
- sealing
- seal structure
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- Expired - Fee Related
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- 238000005553 drilling Methods 0.000 title claims description 17
- 238000007789 sealing Methods 0.000 claims abstract description 78
- 239000007788 liquid Substances 0.000 claims description 5
- 239000010865 sewage Substances 0.000 abstract description 10
- 239000004576 sand Substances 0.000 abstract description 6
- 239000011499 joint compound Substances 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
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Abstract
The utility model discloses a seal structure of rig unit head is dug soon, including the unit head box, the output flange, sealed apron, sealed axle sleeve, it has the annular baffle of the vertical ring that arranges towards the unit head box to extend on the outward flange of output flange, first boss and first recess phase-match form first seal structure, the head that the second boss is close to the output flange forms second way seal structure with second recess phase-match, third recess forms third way seal structure with third boss looks butt, fourth boss and fourth recess looks butt form fourth way seal structure. The utility model discloses a holistic sealing performance of seal structure is high, can thoroughly play inside entering unit head box such as preventing dirt, sand, mud, sewage, the practicality is strong.
Description
Technical Field
The utility model relates to a seal structure of rig unit head is dug soon belongs to and digs rig unit head technical field soon.
Background
The power head is an important matching device on the rotary drilling rig of the engineering machinery, wherein the reliability of a sealing structure of the power head directly influences the construction safety of the rotary drilling rig on a construction site. Some current rotary drilling rig power heads adopt the outside dust of sealing washer isolated power head reducing gear box, mud sewage etc. in the position of output shaft, nevertheless because rotary drilling rig operating mode is very abominable, mud and sealing washer contact, under the rotatory effect of load, the sealing washer rubs with mud, and then makes the sealing washer wearing and tearing, and inside impurity such as outside silt mud can permeate the box through the clearance that the wearing and tearing produced, influence the gear and normally mesh, lead to rotary drilling rig power head damage or even unable normal work.
SUMMERY OF THE UTILITY MODEL
To the problem that above-mentioned prior art exists, the utility model provides a seal structure of rig unit head is dug soon, the holistic sealing performance of this seal structure is high, can thoroughly play inside preventing that entering unit head box such as dirt, sand, mud, sewage, the practicality is strong.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a sealing structure of a rotary drilling rig power head comprises a power head box body, a power head output shaft, an output flange arranged on the power head output shaft, a liquid sealing ring arranged on the output shaft, a sealing cover plate used for fixing the liquid sealing ring and a sealing shaft sleeve, wherein the sealing shaft sleeve is arranged on the power head box body, an annular baffle plate which is vertically arranged towards the power head box body extends from the outer edge of the output flange, an annular first groove is formed in the lower surface of the baffle plate, an annular second groove is formed in the lower surface of the output flange, an annular third groove is formed in the lower surface of the sealing shaft sleeve, a first boss, a second boss and a third boss which are protruded are arranged at positions of the power head box body corresponding to the first groove, the second groove and the third groove respectively, and the first boss is matched with the first groove to form a first sealing, the head part of the second boss close to the output flange is matched with the second groove to form a second sealing structure, the third groove is abutted with the third boss to form a third sealing structure, the lower surface of the sealing cover plate is provided with a fourth groove, a raised fourth boss is arranged at the position of the sealing shaft sleeve corresponding to the fourth groove, and the fourth boss is abutted with the fourth groove to form a fourth sealing structure.
Preferably, the height of the first boss is 14-16 mm, the height of the second boss is 32-34 mm, and the height of the third boss is 10-12 mm.
Preferably, the clearance D1 between baffle and the unit head box is 1 ~ 2mm, the clearance D2 between baffle and the second boss is 0.5 ~ 1mm, the clearance D3 between first recess and the first boss is 0.5 ~ 1mm, the clearance D4 between second recess and the second boss is 0.5 ~ 1 mm.
Preferably, the cross section of the first boss is a right trapezoid, the surface of the first boss close to the outside is an inclined surface, the cross section of the second boss close to the head of the output flange is a right trapezoid, the surface of the second boss close to the head of the output flange is an inclined surface, and the cross section of the third boss is an isosceles trapezoid.
Preferably, the central axes of the baffle, the first groove and the second groove and the central axis of the output flange are the same central axis.
Preferably, a first sealing ring and a second sealing ring are sequentially assembled between the sealing shaft sleeve and the power head box body from top to bottom.
Preferably, a third sealing ring is assembled between the sealing cover plate and the sealing shaft sleeve.
The utility model has the advantages that: the utility model adopts the power head box body, the output flange, the sealing cover plate and the sealing shaft sleeve to form four sealing structures, which can thoroughly prevent dust, sand, mud, sewage and the like from entering the power head box body, has strong practicability, can ensure the normal work of the power head of the rotary drilling rig, prolong the service life of the power head of the rotary drilling rig and reduce the maintenance cost when being used for a long time or under extremely bad working conditions; the utility model discloses a holistic sealing performance of seal structure is high, improves the reliability of digging the rig unit head soon.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view taken at A in FIG. 1;
FIG. 3 is an enlarged view at B of FIG. 1;
FIG. 4 is an enlarged view at C of FIG. 1;
fig. 5 is an enlarged view at D in fig. 1.
In the figure: 1. the power head comprises a power head box body, 11, a first boss, 12, a second boss, 13, a third boss, 2, a power head output shaft, 3, an output flange, 31, a second groove, 4, a liquid sealing ring, 5, a sealing cover plate, 51, a fourth groove, 6, a sealing shaft sleeve, 61, a third groove, 62, a fourth boss, 7, a baffle, 71, a first groove, 8a, a first sealing ring, 8b, a second sealing ring, 8c and a third sealing ring.
Detailed Description
The technical solutions in the implementation of the present invention will be clear from the following description and accompanying drawings, and the described embodiments are only some embodiments, not all embodiments, of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
As shown in fig. 1 to 5, the embodiment of the utility model provides a seal structure of rotary drilling rig unit head, including unit head box 1, unit head output shaft 2, install output flange 3 on unit head output shaft 2, set up the hydraulic seal circle 4 on the output shaft, be used for fixed hydraulic seal circle 4 sealed apron 5 and sealed axle sleeve 6, sealed axle sleeve 6 is installed on unit head box 1, and output flange 3 can rotate relative unit head box 1 along with power head output shaft 2's rotation, extends on output flange 3's the outward flange to have the vertical annular baffle 7 of ring shape that arranges towards unit head box 1, annular first recess 71 has been seted up to baffle 7's lower surface, annular second recess 31 has been seted up to output flange 3's lower surface, annular third recess 61 has been seted up to sealed axle sleeve 6's lower surface, baffle 7, The central axes of the first groove 71 and the second groove 31 and the central axis of the output flange 3 are the same central axis, the positions of the power head box body 1 corresponding to the first groove 71, the second groove 31 and the third groove 61 are respectively provided with a first boss 11, a second boss 12 and a third boss 13, the first boss 11 is matched with the first groove 71 to form a first sealing structure, the head part of the second boss 12 close to the output flange 3 is matched with the second groove 31 to form a second sealing structure, the third groove 61 is abutted with the third boss 13 to form a third sealing structure, the lower surface of the sealing cover plate 5 is provided with a fourth groove 51, a raised fourth boss 62 is arranged at a position of the sealing shaft sleeve 6 corresponding to the fourth groove 51, and the fourth boss 62 is abutted with the fourth groove 51 to form a fourth sealing structure; a first sealing ring 8a and a second sealing ring 8b are sequentially assembled between the sealing shaft sleeve 6 and the power head box body 1 from top to bottom, so that the sealing performance between the second sealing structure and the third sealing structure is improved, and a third sealing ring 8c is assembled between the sealing cover plate 5 and the sealing shaft sleeve 6, so that the sealing performance between the second sealing structure and the fourth sealing structure is improved; first seal structure, second way seal structure can block sand, mud, partial sewage outside power head box 1, third way seal structure, fourth way seal structure will follow the sewage of first way seal structure, the interior infiltration of second way seal structure and further block for this seal structure is whole can thoroughly play and prevent that dirt, sand, mud, sewage etc. get into inside power head box 1, and the practicality is strong, under long-term use or very abominable operating mode, can guarantee to dig the normal work of rig power head soon, the extension is dug rig power head life soon, reduce cost of maintenance.
The utility model discloses in, the height of first boss 11 is 14 ~ 16mm, the height of second boss 12 is 32 ~ 34mm, the height of third boss 13 is 10 ~ 12mm, improves the holistic sealing performance of seal structure.
The utility model discloses in, as shown in fig. 2, clearance D1 between baffle 7 and the unit head box 1 is 1 ~ 2mm, clearance D2 between baffle 7 and the second boss 12 is 0.5 ~ 1mm, clearance D3 between first recess 71 and the first boss 11 is 0.5 ~ 1mm, clearance D4 between second recess 31 and the second boss 12 is 0.5 ~ 1mm, makes output flange 3 can rotate unit head box 1 relatively, improves first seal structure, the second way seal structure's seal chamber's sealing performance.
The utility model discloses in, first boss 11's cross section is right trapezoid, first boss 11 is close to outside face and establishes to the inclined plane, the cross section that second boss 12 is close to output flange 3's head is right trapezoid, and second boss 12 is close to output flange 3's head and establishes to the inclined plane near outside face, is favorable to reducing the impact of outside sand, mud, partial sewage etc., third boss 13's cross section is isosceles trapezoid, is favorable to reducing the impact of the sewage etc. of infiltration in first seal structure, the second seal structure, further improves the holistic sealing performance of seal structure.
To sum up, the utility model discloses a unit head box, output flange, sealed apron, sealed axle sleeve form four seal structure, can thoroughly play inside preventing entering unit head box such as dirt, husky, mud, sewage, the practicality is strong, uses for a long time or under very abominable operating mode, can guarantee to dig the normal work of rig unit head soon, the life extension.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should make the description as a whole, and the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.
Claims (6)
1. A sealing structure of a rotary drilling rig power head comprises a power head box body, a power head output shaft, an output flange arranged on the power head output shaft, a liquid sealing ring arranged on the output shaft, a sealing cover plate used for fixing the liquid sealing ring and a sealing shaft sleeve, wherein the sealing shaft sleeve is arranged on the power head box body, the sealing shaft sleeve is characterized in that an annular baffle plate which is vertically arranged towards the power head box body extends on the outer edge of the output flange, an annular first groove is formed in the lower surface of the baffle plate, an annular second groove is formed in the lower surface of the output flange, an annular third groove is formed in the lower surface of the sealing shaft sleeve, a first boss, a second boss and a third boss which are protruded are arranged at positions of the power head box body corresponding to the first groove, the second groove and the third groove respectively, and the first boss is matched with the first groove to, the head part of the second boss close to the output flange is matched with the second groove to form a second sealing structure, the third groove is abutted with the third boss to form a third sealing structure, the lower surface of the sealing cover plate is provided with a fourth groove, a raised fourth boss is arranged at the position of the sealing shaft sleeve corresponding to the fourth groove, and the fourth boss is abutted with the fourth groove to form a fourth sealing structure.
2. The sealing structure of the rotary drilling rig power head according to claim 1, wherein the height of the first boss is 14-16 mm, the height of the second boss is 32-34 mm, and the height of the third boss is 10-12 mm.
3. The sealing structure of the power head of the rotary drilling rig according to claim 1, wherein a gap D1 between the baffle and the power head box body is 1-2 mm, a gap D2 between the baffle and the second boss is 0.5-1 mm, a gap D3 between the first groove and the first boss is 0.5-1 mm, and a gap D4 between the second groove and the second boss is 0.5-1 mm.
4. The sealing structure of the power head of the rotary drilling rig according to claim 1, wherein the cross section of the first boss is a right trapezoid, the surface of the first boss close to the outside is an inclined surface, the cross section of the second boss close to the head of the output flange is a right trapezoid, and the surface of the second boss close to the head of the output flange close to the outside is an inclined surface.
5. The sealing structure of the rotary drilling rig power head according to claim 1, wherein the central axes of the baffle, the first groove and the second groove and the central axis of the output flange are the same central axis.
6. The sealing structure of the power head of the rotary drilling rig according to claim 1, wherein a first sealing ring and a second sealing ring are sequentially assembled between the sealing shaft sleeve and the power head box body from top to bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020112612.0U CN211624155U (en) | 2020-01-18 | 2020-01-18 | Seal structure of rotary drilling rig power head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020112612.0U CN211624155U (en) | 2020-01-18 | 2020-01-18 | Seal structure of rotary drilling rig power head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211624155U true CN211624155U (en) | 2020-10-02 |
Family
ID=72638863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020112612.0U Expired - Fee Related CN211624155U (en) | 2020-01-18 | 2020-01-18 | Seal structure of rotary drilling rig power head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211624155U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374403A (en) * | 2021-05-26 | 2021-09-10 | 高邮市恒辉机械有限公司 | Multi-seal silt-proof rotary drilling rig power head |
-
2020
- 2020-01-18 CN CN202020112612.0U patent/CN211624155U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113374403A (en) * | 2021-05-26 | 2021-09-10 | 高邮市恒辉机械有限公司 | Multi-seal silt-proof rotary drilling rig power head |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201002 |
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| CF01 | Termination of patent right due to non-payment of annual fee |