CN100399007C - Engine cylinder end airtight, precision detector - Google Patents

Engine cylinder end airtight, precision detector Download PDF

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Publication number
CN100399007C
CN100399007C CNB2004100404976A CN200410040497A CN100399007C CN 100399007 C CN100399007 C CN 100399007C CN B2004100404976 A CNB2004100404976 A CN B2004100404976A CN 200410040497 A CN200410040497 A CN 200410040497A CN 100399007 C CN100399007 C CN 100399007C
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CN
China
Prior art keywords
cylinder
pipeline
airtight
detection
seat
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Expired - Fee Related
Application number
CNB2004100404976A
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Chinese (zh)
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CN1598517A (en
Inventor
尹明善
钟涛
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Lifan Technology Group Co Ltd
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Lifan Industry Group Co Ltd
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Priority to CNB2004100404976A priority Critical patent/CN100399007C/en
Publication of CN1598517A publication Critical patent/CN1598517A/en
Application granted granted Critical
Publication of CN100399007C publication Critical patent/CN100399007C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The present invention relates to a detection device for the air seal and the precision of an engine cylinder end, which is mainly composed of a water tank 3, an elevated bench 4, a detection seat 6, a pressing cylinder 10, an elevated cylinder 1, a small cylinder 5 and an air seal detector 44, wherein the elevated bench 4 is positioned in the water tank 3; the detection seat 6 is arranged on the elevated bench 4; the lower end of the elevated bench 4 is connected with a piston shaft of the elevated cylinder 1; the entry end of an air passage of the detection seat 6 is connected with the interface end of a part to be detected of the air seal detector 44 through a pipeline; the interface end of a standard part of the air seal detector 44 is connected with a standard part, namely a qualified product corresponding to the engine cylinder end to be detected; the detection seat 6 can be replaced; when different engine cylinder ends are detected, corresponding detection seats matched with the engine cylinder ends are selected. The present invention fully uses the working principle of the air seal detector; through preset detection parameters, a detection mechanism can give a direct display does not need to judge by experience; the present invention has the advantages of high detection precision, reliable detection, simple operation, easy use and scientific and reasonable detection method.

Description

Airtight, the accurate pick-up unit of engine cylinder head
Technical field
The present invention relates to a kind of pick-up unit, especially to the impermeability of motorcycle engine cylinder head, the worktable that accuracy detects.
Background technology
Impermeability, the accuracy of motorcycle (water-cooled) engine cylinder head valve and water channel is the very important quality index of motorcycle engine, must carry out strictness, careful detection to it before final assembly.In the patent No. is 03234811.8, name is called " different types of machines cylinder head valve leak locator " and the patent No. is 03234810.x, name is called in the Chinese utility model patent of " water-cooled engine water channel; valve leak locator " and all discloses the motorcycle engine valve, the device that the impermeability of water channel detects, their composition is identical substantially, promptly in a casing that gasoline is housed, be provided with one and detect seat, detect on the seat air hole is arranged, one end of air hole links to each other with source of the gas by tracheae, tracheae is provided with hand valve, directly over the detection seat, be provided with cylinder, when detecting detected member (engine cylinder head) is placed on the detection seat, and the axis of the piston that makes cylinder moves downward and pushes down detected member, move hand valve, make gas through detecting firing chamber and the water channel pressurization of seat, observe pasta and have or not bubble to produce to judge that whether qualified product is to detected member (engine cylinder head).Because the oil in firing chamber and the water channel must be drained before the pressurization, and pressure process needs the regular hour, this need grasp oil extraction and pressing time with operating personnel's experience, and carelessness is arranged slightly, be easy to make substandard product inflow next process.
Summary of the invention
The purpose of this invention is to provide airtight, the accurate pick-up unit of a kind of engine cylinder head, oil extraction and pressing time need be grasped with operator's experience in the solution traditional detection device, and precision is low, detects insecure problem.
Airtight, the accurate pick-up unit of engine cylinder head of the present invention comprises water tank, detects seat and clamping cylinder, detect seat and be provided with air flue, detect seat and be positioned at water tank, clamping cylinder is fixed on the support and is positioned at the top of detecting seat, be provided with self-powered platform in the water tank, detecting seat places on the self-powered platform, the lower end of self-powered platform links to each other with the axis of the piston of lift cylinder, two air pipe interfaces of lift cylinder are connected to two inlet ends of first two-position five-way valve by pipeline, and the main inlet end of this two-position five-way valve is connected on the source of the gas pipe; The air flue inlet end that detects seat is connected the measured piece interface end of airtight detector by pipeline, the pipeline that links to each other with the standard component interface end of airtight detector is connected on the standard component through air valve, the intake interface end of airtight detector is connected on the source of the gas pipe by pipeline, and the power interface end of airtight detector is connected on the signal source switch by cable; Two air pipe interfaces of clamping cylinder are connected to by first pipeline, second pipeline on two inlet ends of second two-position five-way valve, and the main inlet end of this two-position five-way valve is connected on the source of the gas pipe.
Described detection seat next door also is provided with little cylinder, and the outer end of small cylinder piston axle is provided with plug, this plug direct detection seat; After an air pipe interface of described little cylinder and the air pipe interface UNICOM of clamping cylinder, be connected on the inlet end of second two-position five-way valve by second pipeline again, another air pipe interface of little cylinder is connected of selector switch by pipeline, the other end of selector switch connects with first pipeline of clamping cylinder behind time-delay valve, be connected then on another inlet end of second two-position five-way valve, the main inlet end of second two-position five-way valve is connected on the source of the gas pipe.
Reach parameters such as big leakage pressure reduction according to detecting the permission pressure reduction that requires on airtight detector, to configure admission pressure, inflationtime, stabilization time, detection time, evacuation time, permission leakage value, standard component and measured piece in advance among the present invention, make full use of the principle of work of airtight detector, with standard component as detecting object of reference, automatically detect, when under conditions such as identical admission pressure, inflationtime, stabilization time and detection time, if the permission leakage value of measured piece then is certified products less than the permission leakage value that sets in advance, otherwise is unacceptable product.In the time will further observing the gas leakage position of unacceptable product, detected member is dropped to below the water surface in the water tank with self-powered platform, just can judge the gas leakage position of detected engine cylinder head according to the bubble production.Also little cylinder can be set in a detection seat side, the plug of small cylinder piston axle outer end is used for stopping up the water channel water delivering orifice of tested engine cylinder head, thereby this pick-up unit not only can be used to detect the air cooling engine cylinder head, also can be used to detect the water-cooled engine cylinder head.
Advantage of the present invention is: detection time and rush down the leakage value and preestablish need not operating personnel grasp oil extraction and pressing time by experience, the accuracy of detection height, detect reliably, simple to operate, easy to use, detection means is science, rationally more.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the synoptic diagram that is used for detecting the detection seat 6 of single-cylinder water-cooling engine cylinder head among the present invention;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is the synoptic diagram that is used for detecting the detection seat 6 of single-cylinder air-cooled engine cylinder head among the present invention;
Fig. 5 is the vertical view of Fig. 4;
Fig. 6 is the synoptic diagram that is used for detecting the detection seat 6 of twin-tub water-cooled engine cylinder head among the present invention;
Fig. 7 is the vertical view of Fig. 6.
Embodiment
In Fig. 1, detect seat 6 and be provided with air flue 63, detect seat 6 and be positioned at water tank 3, clamping cylinder 10 is fixed on the support 8 and is positioned at the top of detecting seat 6, be provided with self-powered platform 4 in the water tank 3, detect seat 6 and place on the self-powered platform 4, the lower end of self-powered platform 4 links to each other with the axis of the piston 1a of lift cylinder 1, two air pipe interfaces of lift cylinder 1 are connected to two inlet ends of first two-position five-way valve 19 by pipeline 17,18, and the main inlet end of this two-position five-way valve 19 is connected on the source of the gas pipe 40.
Self-powered platform 4 is provided with air flue 4a, air flue 63 inlet ends that detect seat 6 are connected the measured piece interface end of airtight detector 44 by this air flue 4a and pipeline 14, the pipeline 22 that links to each other with the standard component interface end of airtight detector 44 is connected on the standard component 33 through air valve 32, the intake interface end of airtight detector 44 is connected on the source of the gas pipe 40 by pipeline 43, and the power interface end of airtight detector 44 is connected on the signal source switch 31 by cable 30.Standard component 33 is standard reference materials of detected member, and the product category quantity that can detect as required is provided with the standard component 33 and the air valve 32 of respective numbers in parallel, during detection, opens the air valve 32 of corresponding standard component 33 according to detected member.
Two air pipe interfaces of clamping cylinder 10 are connected on two inlet ends of second two-position five-way valve 20 by first pipeline 15, second pipeline 16, and the main inlet end of this two-position five-way valve 20 is connected on the source of the gas pipe 40.
It is removable detecting seat 6, when detecting different engine cylinder heads, should select supporting with it respective detection seat for use, Fig. 2, Fig. 3 illustrates the detection seat that is used for detecting the single-cylinder water-cooling engine cylinder head, Fig. 4, Fig. 5 illustrates the detection seat that is used for detecting the single-cylinder air-cooled engine cylinder head, Fig. 6, Fig. 7 illustrates the detection seat that is used for detecting twin-tub water-cooled engine cylinder head, can find out from Fig. 2~Fig. 7, the upper surface of detecting seat 6 is provided with alignment pin 61 and seal groove 62, in holes during detection on the alignment pin 61 corresponding insertion detected member, being used for the limiting engine cylinder head is detecting moving horizontally on seat 6 end faces, can the air flue 63 that detect on the seat 6 effectively be sealed after installing O-ring seal in the seal groove 62, the lower surface of detecting seat 6 is provided with (matching with register pin on the self-powered platform 4) dowel hole 64, detects seat 6 and is installed on the self-powered platform 4 by it.
As can be seen from Figure 1: described detection seat 6 next doors are provided with two stingy cylinders 5, stingy cylinder 5 also can be set to 3, the number of the water channel of the water-cooled engine cylinder head that its number and installation site should be detected as required outlet and position and decide, when detection has only the cylinder head of a water channel water delivering orifice, it is just passable only need to reinstate one of them stingy cylinder 5, the axis of the piston 5a outer end of stingy cylinder 5 is provided with plug, this plug direct detection seat 6, when making detected engine cylinder head be placed on the detection seat 6, this plug is just in time aimed at the water channel water delivering orifice on the engine cylinder head, the tracheae that links to each other with the air pipe interface of two stingy cylinder 5 leading sections is connected on second pipeline 16 after merging, this second pipeline 16 is connected on the inlet end of second two-position five-way valve 20, the air pipe interface of two stingy cylinder 5 rearward end is respectively by pipeline 11,24 are connected selector switch 29, an end of 28, selector switch 29,28 the other end links together after time-delay valve 21 is connected with first pipeline 15 of clamping cylinder 10, be connected then on another inlet end of second two-position five-way valve 20, the main inlet end of second two-position five-way valve 20 is connected on the source of the gas pipe 40.
Pipeline between the inlet end of airtight detector 44 and the source of the gas pipe 40 is provided with pressure regulator valve 41, imports airtight detector 44 again after being convenient to air pressure regulated.Therefore, this pick-up unit not only can be used to detect the air cooling engine cylinder head, also can be used to detect the water-cooled engine cylinder head.
Water tank 3 and airtight detector 44 all are fixed on the cabinet shape monitor station 42, and lift cylinder 1 is fixed on the outer bottom of water tank 3, and the axis of the piston of lift cylinder 1 extends upwardly into linking to each other with the lower end of self-powered platform 4 in the water tank 3.Support 8 is " ∏ " shape, and its two pin are fixed on the self-powered platform 4.
Principle of work: to detect the single-cylinder water-cooling engine cylinder head is example, the detection seat 6 that is used for detecting the single-cylinder water-cooling engine cylinder head is placed on the self-powered platform 4, connect source of the gas pipe 40, gas 43 enters airtight detector 44 by the road behind pressure regulator valve 41, open the power switch of airtight detector 44, on airtight detector 44, configure admission pressure (Npa) by detecting requirement, inflationtime (S), stabilization time (S), detection time (S), evacuation time (S), allow leakage value (PW), the permission pressure reduction (KPW) of standard component and measured piece and the big pressure reduction parameters such as (KPW) of leaking.Select corresponding standard part 33 according to detected member, the air valve 32 of these standard component 33 correspondences is opened, because the water channel water delivering orifice of cylinder head on the right, therefore the selector switch 28 of stingy cylinder 5 correspondences on the right is opened, detection piece is placed on the detection seat 6, pull second two-position five-way valve 20, make gas enter first pipeline 15, enter clamping cylinder 10 again, the axis of the piston 10a of clamping cylinder 10 is moved down, the pressure head of the axis of the piston 10a end is pushed down detected member, simultaneously, and through the gas of time-delay valve 21 time-delay (about 2 seconds) by the road 23, by selector switch 28, enter stingy cylinder 5 through pipeline 24 again, the axis of the piston 5a that promotes stingy cylinder 5 stretches out, and the plug of the axis of the piston 5a end is blocked the outlet of the water channel on the detected member.At this moment, press the signal source switch 31 of airtight detector 44, airtight detector 44 is started working, gas respectively by the road 14 and pipeline 22 enter detected member and standard component, principle of work according to airtight detector, under conditions such as identical admission pressure, inflationtime, stabilization time and detection time, if the permission leakage value of measured piece then is certified products less than the permission leakage value that sets in advance, otherwise be unacceptable product, airtight detector 44 can be known and shows, therefore very accurate, reliable, and it is also convenient to operate.After having detected, pull second two-position five-way valve 20 again, make gas enter clamping cylinder 10 and stingy cylinder 5 simultaneously from second pipeline 16, make on the axis of the piston 10a of clamping cylinder 10 and move, the axis of the piston 5a of stingy cylinder 5 reclaims, and the gas of before having compressed in the cylinder then enters the exhaust end discharge of second two-position five-way valve 20 through former pipeline 15,24 and 23.As will further observing the gas leakage position of unacceptable product, only need pull first two-position five-way valve 19, make gas 17 enter lift cylinder 1 by the road, the axis of the piston 1a that promotes lift cylinder 1 moves down, the axis of the piston 1a drives coupled self-powered platform 4 and drops to below the water surface, judges the gas leakage position according to the situation that bubble produces.And then pull first two-position five-way valve 19, and make gas 18 enter on the axis of the piston 1a that lift cylinder 1 promotes lift cylinder 1 and move by the road, the axis of the piston 1a drives coupled self-powered platform 4 and rises and reset.

Claims (5)

1. airtight, accurate pick-up unit of engine cylinder head, comprise water tank (3), detect seat (6) and clamping cylinder (10), detect seat (6) and be provided with air flue (63), detect seat (6) and be positioned at water tank (3), clamping cylinder (10) is fixed on the top that detection seat (6) was gone up and be positioned to support (8), it is characterized in that:
Be provided with self-powered platform (4) in A, the water tank (3), detecting seat (6) places on the self-powered platform (4), the lower end of self-powered platform (4) links to each other with the axis of the piston (1a) of lift cylinder (1), two air pipe interfaces of lift cylinder (1) are connected to two inlet ends of first two-position five-way valve (19) by pipeline (17,18), and the main inlet end of this two-position five-way valve (19) is connected on the source of the gas pipe (40);
Air flue (63) inlet end of B, detection seat (6) is connected the measured piece interface end of airtight detector (44) by pipeline (14), the pipeline (22) that links to each other with the standard component interface end of airtight detector (44) is connected on the standard component (33) through air valve (32), the intake interface end of airtight detector (44) is connected on the source of the gas pipe (40) by pipeline (43), and the power interface end of airtight detector (44) is connected on the signal source switch (31) by cable (30);
Two air pipe interfaces of C, clamping cylinder (10) are connected on two inlet ends of second two-position five-way valve (20) by first pipeline (15), second pipeline (16), and the main inlet end of this two-position five-way valve (20) is connected on the source of the gas pipe (40).
2. airtight, the accurate pick-up unit of engine cylinder head according to claim 1 is characterized in that: described detection seat (6) next door also is provided with little cylinder (5), and the outer end of little cylinder (5) the axis of the piston (5a) is provided with plug, this plug direct detection seat (6); Air pipe interface of described little cylinder (5) is with after an air pipe interface of clamping cylinder (10) is communicated with, be connected on the inlet end of described second two-position five-way valve (20) by second pipeline (16) again, another air pipe interface of little cylinder (5) is connected of selector switch (28 or 29) by pipeline (24 or 11), the other end of selector switch (28 or 29) connects with first pipeline (15) of clamping cylinder (10) behind time-delay valve (21), be connected then on another inlet end of second two-position five-way valve (20), the main inlet end of second two-position five-way valve (20) is connected on the source of the gas pipe (40).
3. airtight, the accurate pick-up unit of engine cylinder head according to claim 1 is characterized in that: the pipeline (43) between the inlet end of described airtight detector (44) and the source of the gas pipe (40) is provided with pressure regulator valve (41).
4. airtight, the accurate pick-up unit of engine cylinder head according to claim 1, it is characterized in that: described water tank (3) and airtight detector (44) all are fixed on the cabinet shape monitor station (42), lift cylinder (1) is fixed on the outer bottom of water tank (3), and the axis of the piston (1a) of lift cylinder (1) extends upwardly in the water tank (3) and links to each other with the lower end of self-powered platform (4).
5. airtight, the accurate pick-up unit of engine cylinder head according to claim 1 is characterized in that: described support (8) is " ∏ " shape, and its two pin are fixed on the self-powered platform (4).
CNB2004100404976A 2004-08-18 2004-08-18 Engine cylinder end airtight, precision detector Expired - Fee Related CN100399007C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNB2004100404976A CN100399007C (en) 2004-08-18 2004-08-18 Engine cylinder end airtight, precision detector

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Application Number Priority Date Filing Date Title
CNB2004100404976A CN100399007C (en) 2004-08-18 2004-08-18 Engine cylinder end airtight, precision detector

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CN1598517A CN1598517A (en) 2005-03-23
CN100399007C true CN100399007C (en) 2008-07-02

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101995319B (en) * 2010-10-22 2012-05-30 梁刚 Airtightness testing machine
CN102393278B (en) * 2011-09-19 2013-07-10 武汉工程大学 Bidirectional sealing performance testing system of mechanical rapping device
CN103076140A (en) * 2013-01-09 2013-05-01 昆山佳铭自动化科技有限公司 Brake fluid pot air tightness detection device
CN103292968B (en) * 2013-06-07 2016-02-10 浙江金浪动力有限公司 Air exhaust leakage detector for cylinder head air channel
CN108827551A (en) * 2018-08-17 2018-11-16 全椒县全动机械有限公司 A kind of engine valve discone antenna surface air-tightness detection method
CN109813267B (en) * 2019-02-22 2020-07-17 东莞市合达电子科技有限公司 Airtight comprehensive detection equipment for ball screw supporting seat

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1401308A1 (en) * 1986-06-30 1988-06-07 Производственное Объединение "Ворошиловградский Тепловозостроительный Завод Им.Октябрьской Революции" Installation for checking hollow articles for leak-proofness
JP2000292300A (en) * 1999-04-08 2000-10-20 Toyota Motor Corp Airtightness testing machine
CN2504623Y (en) * 2001-09-12 2002-08-07 重庆市机电设计研究院 Device for measuring engine air valve gap and airtight property
CN2625874Y (en) * 2003-06-03 2004-07-14 重庆力帆实业(集团)有限公司 Leak detector for watercourse and valve of water-cooled engine
CN2802490Y (en) * 2004-08-18 2006-08-02 重庆力帆实业(集团)有限公司 Gas-tight, precision testing stage for engine cylinder end

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1401308A1 (en) * 1986-06-30 1988-06-07 Производственное Объединение "Ворошиловградский Тепловозостроительный Завод Им.Октябрьской Революции" Installation for checking hollow articles for leak-proofness
JP2000292300A (en) * 1999-04-08 2000-10-20 Toyota Motor Corp Airtightness testing machine
CN2504623Y (en) * 2001-09-12 2002-08-07 重庆市机电设计研究院 Device for measuring engine air valve gap and airtight property
CN2625874Y (en) * 2003-06-03 2004-07-14 重庆力帆实业(集团)有限公司 Leak detector for watercourse and valve of water-cooled engine
CN2802490Y (en) * 2004-08-18 2006-08-02 重庆力帆实业(集团)有限公司 Gas-tight, precision testing stage for engine cylinder end

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