CN112964434B - Engine oil seal tightness detection device - Google Patents
Engine oil seal tightness detection device Download PDFInfo
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- CN112964434B CN112964434B CN202110196518.7A CN202110196518A CN112964434B CN 112964434 B CN112964434 B CN 112964434B CN 202110196518 A CN202110196518 A CN 202110196518A CN 112964434 B CN112964434 B CN 112964434B
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- China
- Prior art keywords
- pressure head
- oil seal
- detection device
- engine oil
- top block
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/025—Details with respect to the testing of engines or engine parts
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model provides an engine oil seal tightness detection device that can realize quick, accurate, high-efficient, detect in batches, including the pressure head, the kicking block, outside floating piece, the kicking block is fixed in between cylinder output and the pressure head, the outside bottom cover of pressure head is equipped with first O shape circle, the bottom surface of pressure head has the round chimb, the outside cover of chimb is equipped with the steel ring, be provided with the second O shape circle in the gap between steel ring and the chimb, the floating piece includes the cover shell and is located the baffle in the cover shell, be provided with a plurality of first reset springs between the upper surface of baffle and pressure head, the baffle is cut apart into upper portion and lower part with the inner space of cover shell, the pressure head is located the lower part of cover shell, the kicking block is located the upper portion of cover shell, form first airtight space between kicking block and the baffle, be provided with the first air inlet nozzle that is linked together with first airtight space on the kicking block, the inside gas circuit passageway that is provided with of pressure head, the gas circuit passageway includes second air inlet nozzle and gas outlet, the second air inlet nozzle is connected in the gas tightness detector, the gas outlet is located between the perk and the chimb.
Description
Technical Field
The invention relates to an engine oil seal tightness detection device.
Background
Referring to fig. 1 and 2, fig. 1 is a perspective view of an oil seal assembly, and fig. 2 is a sectional view of the oil seal assembly. The engine oil seal is commonly called an oil protection ring, is an indispensable accessory for keeping a transmission part in normal operation in an automobile, and mainly comprises the following steps that an oil baffle disc is pressed into a sealing cover, and two joint surfaces are formed after press fit in place: the main joint surface P in the vertical direction and the press-fitting surface S in the horizontal direction are mainly ensured by the main joint surface P. Because the sealing cover and the oil baffle disc are manufactured and processed with certain difference in precision, the bonding degree of the main bonding surface after press mounting is also different, the bonding degree is poor, and oil leakage phenomenon can occur in the working process of the engine. For the oil seal tightness, some manufacturers can ensure the tightness by coating high-temperature-resistant sealant on the corresponding positions of the main joint surface, and some manufacturers can ensure the tightness by improving the processing precision of the oil baffle disc and the seal cover press-fit surface, but in any method, time and labor are wasted, the tightness of the oil seal cannot be completely ensured, so that the tightness of the oil seal is required to be detected, and no good detection means exist at present.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the oil seal tightness detection device for rapid, accurate, efficient and large-scale detection.
In order to achieve the above purpose, the invention provides an engine oil seal tightness detection device, which comprises a pressure head and a top block connected with an output end of a cylinder, and an external floating piece movably sleeved in the pressure head, wherein the top block is fixed between the output end of the cylinder and the pressure head, the pressure head is cylindrical in shape, a circle of tilted edge is formed at the bottom of the outer side of the pressure head, a first O-shaped ring is sleeved on the tilted edge, a circle of raised edge is arranged on the bottom surface of the pressure head, a steel ring is sleeved outside the raised edge, a second O-shaped ring is arranged in a gap between the steel ring and the raised edge, the floating piece comprises a casing and a baffle plate positioned in the casing, a plurality of first reset springs are arranged between the baffle plate and the upper surface of the pressure head, the baffle plate divides the internal space of the casing into an upper part and a lower part, the pressure head is positioned at the lower part of the casing, the top block is positioned at the upper part of the casing, a first airtight space is formed between the top block and the baffle plate, a second airtight space is formed between the top block and the baffle plate, the airtight space is provided with a first air inlet nozzle and a second airtight air inlet channel, and an airtight air inlet nozzle is arranged between the air inlet channel and the air inlet channel, and the airtight air inlet channel is connected with the air inlet channel; under operating condition, the cylinder output drives the pressure head and presses into in the oil blanket subassembly, the bottom surface and the closing cap surface laminating of steel ring in order to make the second O shape circle press at the closing cap surface, the outside of perk limit paste the internal surface of the tight food tray, first air inlet nozzle intake in order to make the floating member descend and promote first O shape circle, first O shape circle along perk limit outwards expand paste tightly between oil baffle tray internal surface and perk limit, first O shape circle and second O shape circle between form the airtight space of second, second air inlet nozzle lets in the detection gas, the inside atmospheric pressure of oil blanket subassembly feeds back in real time and realizes the gas tightness and detects in the gas tightness detector.
Preferably, a plurality of through spring holes are longitudinally formed in the pressure head, a second reset spring and a push rod are arranged in the spring holes, one end of the second reset spring is supported on the lower surface of the partition plate, the other end of the second reset spring is supported on the push rod, and the push rod is elastically abutted against the upper surface of the inner flange of the sealing cover.
Preferably, the first return spring and the second return spring are distributed at intervals.
Preferably, the top of the pressure head is provided with a connecting column, and the inside of the connecting column is provided with a connecting hole connected with the end part of the output end of the air cylinder.
Preferably, the partition board is provided with a mounting hole sleeved on the connecting column, and a first sealing ring is arranged between the partition board and the connecting column.
Preferably, a second sealing ring is arranged between the top block and the inner wall of the casing.
Preferably, the top block is provided with a fixing hole sleeved on the output end of the air cylinder, the output end of the air cylinder is provided with a positioning part, and the top block is clamped between the positioning part and the connecting column.
Preferably, the fixing hole is provided with a concave area around, and the end part of the connecting column is positioned in the concave area.
Preferably, a third O-shaped ring is arranged between the top block and the connecting column.
Preferably, the second air inlet nozzle is positioned on the side surface of the pressure head, a long hole is formed in the casing, and the second air inlet nozzle is positioned in the long hole.
Due to the adoption of the technical scheme, the device can be integrated on an automatic production line and combined with the air tightness detector to realize rapid, accurate, efficient and large-batch detection.
Drawings
FIG. 1 is a perspective view of an oil seal assembly;
FIG. 2 is a cross-sectional view of an oil seal assembly;
fig. 3 and 4 are perspective views of an engine oil seal tightness detection device according to the present invention;
fig. 5 and 6 are sectional views of an engine oil seal tightness detecting device according to the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making clear and defining the scope of the present invention.
Referring to fig. 3 to 6, fig. 3 and 4 are perspective views of an engine oil seal tightness detection device according to the present invention, and fig. 5 and 6 are sectional views of the engine oil seal tightness detection device according to the present invention. The engine oil seal tightness detection device in the embodiment comprises a pressure head 2 connected to an air cylinder output end 1, a top block 3 and an external floating piece 7 movably sleeved on the pressure head 4, wherein the top block 3 is fixed between the air cylinder output end 1 and the pressure head 4.
The appearance of pressure head 4 is cylindrical, and the outside bottom of pressure head 4 forms round perk limit 41, and the cover is equipped with first O shape circle 5 on perk limit 41, and the top of pressure head 4 has spliced pole 42, and spliced pole 42's inside has the connecting hole 43 that is connected with the tip of cylinder output 1. The bottom surface of the pressure head 4 is provided with a circle of convex edge 44, the outer part of the convex edge 44 is sleeved with a steel ring 8, and a second O-shaped ring 18 is arranged in a gap between the steel ring 8 and the convex edge 44.
The pressure head 4 is internally provided with an air channel 11, the air channel 11 comprises a second air inlet nozzle 12 and an air outlet 13, the second air inlet nozzle 12 is connected with an air tightness detector, and the air outlet 13 is positioned between the raised edge 41 and the raised edge 44; the second air inlet nozzle 12 is located on the side face of the pressure head 4, a long hole 6 is formed in the casing 71, and the second air inlet nozzle 12 is located in the long hole 6.
A plurality of through spring holes 45 are longitudinally formed in the pressure head 4, a second return spring 14 and a push rod 15 are arranged in the spring holes 45, one end of the second return spring 14 is supported on the lower surface of the partition plate 72, the other end of the second return spring is supported on the push rod 15, the push rod 15 is elastically abutted against the upper surface of the inner flange of the sealing cover, and the first return spring 9 and the second return spring 14 are distributed at intervals.
The floating piece 7 comprises a casing 71 and a baffle plate 72 positioned in the casing 71, a plurality of first reset springs 9 are arranged between the baffle plate 72 and the upper surface of the pressure head 4, the baffle plate 72 divides the inner space of the casing 71 into an upper part and a lower part, the pressure head 4 is positioned at the lower part of the casing 71, the top block 3 is positioned at the upper part of the casing 71, a first airtight space is formed between the top block 3 and the baffle plate 72, and a first air inlet nozzle 10 communicated with the first airtight space is arranged on the top block 3. The partition plate 72 is provided with a mounting hole 73 sleeved on the connecting column 42, a first sealing ring 16 is arranged between the partition plate 72 and the connecting column 42, and a second sealing ring 17 is arranged between the top block 3 and the inner wall of the casing 71.
The top block 3 is provided with a fixing hole 31 sleeved on the cylinder output end 1, the cylinder output end 1 is provided with a positioning part 2, and the top block 3 is clamped between the positioning part 2 and the connecting column 42. The periphery of the fixing hole 31 is provided with a concave area 62, the end part of the connecting column 42 is positioned in the concave area 62, and a third O-shaped ring 19 is arranged between the top block 3 and the connecting column 42.
Under the operating condition, the cylinder output end 1 drives the pressure head 2 to be pressed into the oil seal assembly, when the pressure head is pressed into place, the bottom surface of the steel ring 8 is attached to the surface of the sealing cover so that the second O-shaped ring 18 is pressed on the surface of the sealing cover, the outer part of the tilted edge 41 is attached to the inner surface of the oil disc, the first air inlet nozzle 10 is used for feeding air so that the floating piece 7 descends and pushes the first O-shaped ring 5, the first O-shaped ring 5 is outwards expanded along the tilted surface of the tilted edge 41 and firmly attached between the inner surface of the oil disc and the tilted edge 41, a second airtight space is formed between the first O-shaped ring 5 and the second O-shaped ring 18, and the second airtight space is a theoretical airtight space, but in actual conditions, different oil seals are different in main attaching surface tightness, so that the second air inlet nozzle 12 is used for feeding detection gas, and the internal gas pressure can be fed back into the air tightness detector in real time, and whether the air tightness of the oil seal is qualified or not is judged by comparing the detection gas pressure with the theoretical set qualified gas pressure, so that the air tightness detection of the oil seal is realized.
After the detection is finished, the first air inlet nozzle 10 and the second air inlet nozzle 12 stop ventilation, the external floating piece 7 returns to the original position under the action of the first return spring 9, the first O-shaped ring 5 returns to the original position (namely, the first O-shaped ring is still in a certain expansion state at the moment) due to the fact that friction force cannot reach the slope of the pressure head, so that the first O-shaped ring 5 is in a contact state with the inner surface of the oil baffle disc, when the air cylinder ascends, the first O-shaped ring 5 and the oil baffle disc are separated from the placing table due to friction force, and in the ascending process of the air cylinder, the oil seal is likely to fall off at any time, which is not allowed. In order to prevent the situation, the ejector rod 15 is arranged in the device, when the air cylinder descends, the ejector rod 15 is propped against the upper surface of the inner flange of the sealing cover, when the air cylinder ascends, the ejector rod 15 presses the oil seal against the placing table by means of the spring force of the second reset spring 14 (overcoming the friction force between the first O-shaped ring 5 and the oil baffle disc), and the risk that the oil seal is carried up is avoided. Due to the adoption of the technical scheme, the device can be integrated on an automatic production line and combined with the air tightness detector to realize rapid, accurate, efficient and large-batch detection.
The above embodiments are only for illustrating the technical concept and features of the present invention, and are intended to enable those skilled in the art to understand the content of the present invention and to implement the same, but are not intended to limit the scope of the present invention, and all equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. An engine oil seal tightness detection device, characterized by comprising: the cylinder head is characterized in that a pressure head (4) and a top block (3) which are connected with a cylinder output end (1) are movably sleeved on an external floating piece (7) of the pressure head (4), the top block (3) is fixed between the cylinder output end (1) and the pressure head (4), the appearance of the pressure head (4) is cylindrical, a circle of raised edge (41) is formed at the bottom of the outer side of the pressure head (4), a first O-shaped ring (5) is sleeved on the raised edge (41), a circle of convex edge (44) is arranged on the bottom surface of the pressure head (4), a second O-shaped ring (18) is arranged in a gap between the steel ring (8) and the convex edge (44), the floating piece (7) comprises a sleeve (71) and a partition plate (72) positioned in the sleeve (71), a plurality of first reset springs (9) are arranged between the partition plate (72) and the upper surface of the pressure head (4), the partition plate (72) divides the inner space of the sleeve (8) into a partition plate (71) and a partition plate (71) positioned between the top block (3) and the top block (3), the top block (3) is provided with a first air inlet nozzle (10) communicated with a first airtight space, an air channel (11) is arranged in the pressure head (4), the air channel (11) comprises a second air inlet nozzle (12) and an air outlet (13), the second air inlet nozzle (12) is connected to an air tightness detector, and the air outlet (13) is positioned between the raised edge (41) and the convex edge (44); under operating condition, cylinder output (1) drive pressure head (4) and impress in the oil blanket subassembly, the bottom surface and the closing cap surface laminating of steel ring (8) so that second O shape circle (18) are pressed on the closing cap surface, the outside of perk limit (41) paste the internal surface of tight food tray, first suction nozzle (10) intake so that floating piece (7) descend and promote first O shape circle (5), first O shape circle (5) outwards expand along perk limit (41) and paste tightly between oil baffle tray internal surface and perk limit (41), first O shape circle (5) and second O shape circle (18) between form the airtight space of second, second suction nozzle (12) lets in the detection gas, the inside atmospheric pressure of oil blanket subassembly realizes the gas tightness and detects in real time feedback to the gas tightness detector.
2. The engine oil seal tightness detection device according to claim 1, wherein: the pressure head (4) in be provided with a plurality of spring holes (45) that link up along vertically, spring hole (45) in be provided with second reset spring (14) and ejector pin (15), one end of second reset spring (14) support in the lower surface of baffle (72), the other end support in ejector pin (15), ejector pin (15) elasticity support tightly at the upper surface of closing cap inward flange.
3. The engine oil seal tightness detection device according to claim 2, wherein: the first return springs (9) and the second return springs (14) are distributed at intervals.
4. The engine oil seal tightness detection device according to claim 1, wherein: the top of the pressure head (4) is provided with a connecting column (42), and the inside of the connecting column (42) is provided with a connecting hole (43) connected with the end part of the air cylinder output end (1).
5. The engine oil seal tightness detection device according to claim 4, wherein: the partition plate (72) is provided with a mounting hole (73) sleeved on the connecting column (42), and a first sealing ring (16) is arranged between the partition plate (72) and the connecting column (42).
6. The engine oil seal tightness detection device according to claim 5, wherein: a second sealing ring (17) is arranged between the top block (3) and the inner wall of the casing (71).
7. The engine oil seal tightness detection device according to claim 4, wherein: the top block (3) is provided with a fixing hole (31) sleeved on the cylinder output end (1), the cylinder output end (1) is provided with a positioning part (2), and the top block (3) is clamped between the positioning part (2) and the connecting column (42).
8. The engine oil seal tightness detection device according to claim 7, wherein: the periphery of the fixing hole (31) is provided with a concave area, and the end part of the connecting column (42) is positioned in the concave area.
9. The engine oil seal tightness detection device according to claim 8, wherein: a third O-shaped ring (19) is arranged between the top block (3) and the connecting column (42).
10. The engine oil seal tightness detection device according to claim 1, wherein: the second air inlet nozzle (12) is positioned on the side face of the pressure head (4), a long hole (6) is formed in the casing (71), and the second air inlet nozzle (12) is positioned in the long hole (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110196518.7A CN112964434B (en) | 2021-02-22 | 2021-02-22 | Engine oil seal tightness detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110196518.7A CN112964434B (en) | 2021-02-22 | 2021-02-22 | Engine oil seal tightness detection device |
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| Publication Number | Publication Date |
|---|---|
| CN112964434A CN112964434A (en) | 2021-06-15 |
| CN112964434B true CN112964434B (en) | 2023-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110196518.7A Active CN112964434B (en) | 2021-02-22 | 2021-02-22 | Engine oil seal tightness detection device |
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| Country | Link |
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| CN (1) | CN112964434B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116519220B (en) * | 2023-06-29 | 2023-11-07 | 太仓奥林吉汽车零部件有限公司 | Engine part tightness detector |
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| JPH04256818A (en) * | 1991-02-07 | 1992-09-11 | Nok Corp | Method and apparatus for inspecting sealing property of sealing element |
| JPH0535615U (en) * | 1991-08-09 | 1993-05-14 | 昭和電工株式会社 | Airtightness inspection device for sealed containers |
| CN201302506Y (en) * | 2008-11-03 | 2009-09-02 | 书元机械企业(昆山)有限公司 | Oil seal air-tightness detection device |
| CN103447800A (en) * | 2013-08-26 | 2013-12-18 | 常州朗博汽车零部件有限公司 | Oil seal press fitting detection production line |
| CN208043324U (en) * | 2018-01-30 | 2018-11-02 | 苏州英维特精密机械有限公司 | Floating type air tightness test component |
| CN109632195A (en) * | 2018-11-30 | 2019-04-16 | 宁波帕瑞戈林智能科技有限公司 | A kind of washing pump air-leakage test head |
| JP2019086472A (en) * | 2017-11-09 | 2019-06-06 | トヨタ自動車株式会社 | Leak test device |
| CN208984300U (en) * | 2018-09-29 | 2019-06-14 | 青岛海力威新材料科技股份有限公司 | A kind of air-tightness detection tool of combination oil seal |
| CN211061122U (en) * | 2020-01-06 | 2020-07-21 | 温州立晨汽车零部件有限公司 | Sealed frock that detects of feed liquor subassembly |
-
2021
- 2021-02-22 CN CN202110196518.7A patent/CN112964434B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04256818A (en) * | 1991-02-07 | 1992-09-11 | Nok Corp | Method and apparatus for inspecting sealing property of sealing element |
| JPH0535615U (en) * | 1991-08-09 | 1993-05-14 | 昭和電工株式会社 | Airtightness inspection device for sealed containers |
| CN201302506Y (en) * | 2008-11-03 | 2009-09-02 | 书元机械企业(昆山)有限公司 | Oil seal air-tightness detection device |
| CN103447800A (en) * | 2013-08-26 | 2013-12-18 | 常州朗博汽车零部件有限公司 | Oil seal press fitting detection production line |
| JP2019086472A (en) * | 2017-11-09 | 2019-06-06 | トヨタ自動車株式会社 | Leak test device |
| CN208043324U (en) * | 2018-01-30 | 2018-11-02 | 苏州英维特精密机械有限公司 | Floating type air tightness test component |
| CN208984300U (en) * | 2018-09-29 | 2019-06-14 | 青岛海力威新材料科技股份有限公司 | A kind of air-tightness detection tool of combination oil seal |
| CN109632195A (en) * | 2018-11-30 | 2019-04-16 | 宁波帕瑞戈林智能科技有限公司 | A kind of washing pump air-leakage test head |
| CN211061122U (en) * | 2020-01-06 | 2020-07-21 | 温州立晨汽车零部件有限公司 | Sealed frock that detects of feed liquor subassembly |
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| CN112964434A (en) | 2021-06-15 |
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