CN106404293A - Crankcase leakage test sealing method and sealing device - Google Patents

Crankcase leakage test sealing method and sealing device Download PDF

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Publication number
CN106404293A
CN106404293A CN201610901813.7A CN201610901813A CN106404293A CN 106404293 A CN106404293 A CN 106404293A CN 201610901813 A CN201610901813 A CN 201610901813A CN 106404293 A CN106404293 A CN 106404293A
Authority
CN
China
Prior art keywords
plate
sealing
roller
plugging
crankcase
Prior art date
Application number
CN201610901813.7A
Other languages
Chinese (zh)
Inventor
王海洋
袁义勇
孙伏龙
徐子峰
Original Assignee
大连现代辅机开发制造有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 大连现代辅机开发制造有限公司 filed Critical 大连现代辅机开发制造有限公司
Priority to CN201610901813.7A priority Critical patent/CN106404293A/en
Publication of CN106404293A publication Critical patent/CN106404293A/en

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Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/025Details with respect to the testing of engines or engine parts

Abstract

The invention relates to a leakage test sealing method and device applicable to a crankcase cavity on an engine cylinder body. A metal plate is adopted to compensate a broken part of a sealing contour line of a workpiece sealing surface, and then a closed-loop profiling sealing ring is enabled to be closely attached to the compensated workpiece sealing surface by adopting a sealing device. According to the invention, an upper plate of the sealing device adopted in the invention is provided with an oil cylinder, a guide column is fixed between the upper plate and a lower plate, a guide sleeve is fixed on a middle plate, the guide sleeve is in clearance fit with the guide column, the oil cylinder and the middle plate are connected through a connecting base, the middle plate is provided with a bottom surface blocking mechanism, a front end surface blocking mechanism and a rear end surface blocking mechanism, the lower plate is provided with a roller bed supporting base, a top surface blocking mechanism and a workpiece positioning mechanism, a conveying roller bed device is located between the middle plate and the lower plate, a roller bed pulling rod fixed on the middle plate is connected with the conveying roller bed device, the lower plate is provided with supporting legs below, and the supporting legs are fixedly connected with a base. The leakage test sealing method is simple and novel, mature and reliable in structure and high in practicability.

Description

Crankcase leak test encapsulating method and sealing device

Technical field

The present invention relates to mechanical field is and in particular to a kind of leak test being applied to engine cylinder-body upper crankcase cavity seals Method and apparatus.

Background technology

Operation principle according to engine and structure, certain some holes system of engine interior and cavity are independent closed , if revealed, engine will be unable to work or directly scraps.And the leakage of relevant hole system and cavity mostly occurs in engine Casting and process in, therefore, in engine line, it is requisite for carrying out leak test to workpiece.Common work Part leak test part has oil duct leak test, water jacket leak test etc..Taking oil hole leak test as a example, first have to find out in oil hole system with extraneous phase Then hole is blocked by logical hole with sealing rubber, and such oil hole system forms the cavity of an independent closed, then is filled by leak test The leak test instrument put carries out leak test detection to oil hole system.The version of existing engine is various, needs leak test cavity also not to the utmost Identical, the cylinder block-crankcase cavity of one form of which, during the detection of its leak test, the sealing to cavity proposes a difficult problem.Fig. 1's A kind of cylinder block-crankcase cavity shown in (a)~(d), the heavy black part on four faces of cylinder body(Hereinafter referred to as sealing configuration money)Interior Space be that crankcase cavity is in communication with the outside part, general leak testing process is according to close on four faces of cylinder body in Fig. 1 Envelope profile wire modeling makes sealing ring, then by leakage test mechanism, profiling sealing ring is pressed on sealing configuration line, but The method does not but reach sealing effectiveness in the case of figure 1, because the sealing configuration line in Fig. 1 is open loop, discontinuous, that is, Profiling sealing ring is made to make continuously, also some sealing ring is hanging because of face contactless on workpiece, does not reach sealing effectiveness. Therefore, how the cavity in the case of Fig. 1 being effectively sealed is urgent problem.

Content of the invention

Present invention aim to address the problems referred to above, provide a kind of encapsulating method and sealing device, effective sealed cylinder block Crankcase cavity, and then the detection of crankcase leak test, the encapsulating method structure of the present invention is simple, stable, sealed reliable.

The present invention be employed technical scheme comprise that for achieving the above object:Propose a kind of crankcase leak test encapsulating method, Comprise the following steps:

1)Determine the sealing configuration line of crankcase top surface, bottom surface, front end face and rear end face;

2)The open loop sealing configuration line of each end face is compensated using compensating plate, forms closed loop sealing configuration line;

3)Shape according to each end face closed loop outline line makes corresponding profiling sealing ring, and by sealing device by top surface, bottom The profiling sealing ring of face, front end face and rear end face is fitted tightly with corresponding with the closed loop sealing configuration line of each end face respectively, completes Seal operation before crankcase each end face leak test.

Described compensating plate is metallic plate, is inlaid with sealing strip, sealing strip and profiling sealing ring between metallic plate and crankcase Vertical butt joint.

The sealing device adopting in crankcase leak test encapsulating method, including upper plate, middle plate, lower plate, lead and conveying roller Duct device, upper plate is provided with oil cylinder, and lead is fixed between upper plate and lower plate, and middle plate is fixed with fairlead, fairlead With the cooperation of lead gap, oil cylinder is connected by connecting seat with middle plate, and middle plate is provided with bottom surface plugging mechanism, front end face closure Mechanism and rear end face plugging mechanism, lower plate is provided with roller-way support base, top surface plugging mechanism and workpiece locating mechanism, conveying roller Duct device is located between middle plate and lower plate, and the roller-way pull bar being fixed on middle plate is connected with roller-conveying device, the lower section of lower plate It is provided with supporting leg, supporting leg is fixedly connected with base.

Described roller-conveying device includes two groups of wallboards, two line slide rails and two groups of cylinders, and two groups of wallboards form and are used for The roller-way of conveying workpieces, two line slideways are arranged at the lower section of roller-way and, every group wallboard connection one cylinder vertical with wallboard, Cylinder is used for driving wallboard to move along line slideway.

Described bottom surface plugging mechanism, front end face plugging mechanism and rear end face plugging mechanism are all using cylinder or hydraulic oil cylinder driving.

The present invention adopts sheet metal to compensate the part that on Work piece sealing face, sealing configuration line disconnects, and so that the profiling of closed loop is sealed Circle is fitted tightly with the Work piece sealing face after compensation, to reach sealing effectiveness.The sealing device of the present invention is in oil cylinder in retraction shape During state, workpiece is transported to specified location in device by rollgang, and workpiece is positioned and lifts and conveying roller by workpiece locating mechanism Road departs from, and the wallboard of subsequent rollgang opens to both sides in the presence of cylinder and line slide rail, and now oil cylinder stretches out, middle plate Decline, declined by the rollgang that roller-way pull bar is associated with middle plate, rollgang is seated on roller-way support base, middle plate continues Decline, after middle plate decline puts in place, workpiece drops on top surface plugging mechanism with workpiece locating mechanism, now bottom surface stopple plugging machine Crankcase cavity is sealed by structure, rear end face plugging mechanism, front end face plugging mechanism action with top surface plugging mechanism, and leak test detects After end, bottom surface plugging mechanism, rear end face plugging mechanism and front end face plugging mechanism return in situ, and workpiece is lifted by workpiece locating mechanism Rise, oil cylinder is retracted, middle plate rises, rollgang rises therewith, oil cylinder is retracted after putting in place, rollgang wallboard merges back in situ, Workpiece locating mechanism returns in situ and by workpiece seating to rollgang, and rollgang runs workpiece carrying device.

The present invention solves difficult the asking of crankcase leak test by a kind of new crankcase seals mode and sealing device Topic.The encapsulating method of the present invention is simply novel, sealing device mature and reliable, practical.

Brief description

Fig. 1 is cylinder block-crankcase cavity sealing configuration line schematic diagram, and wherein (a) is front end face, and (b) is rear end face,(c)For Bottom surface,(d)For top surface;

Fig. 2 is the cylinder block-crankcase cavity sealing configuration line schematic diagram after compensating, and wherein (a) is front end face, and (b) is rear end face, (c)For bottom surface,(d)For top surface;

Fig. 3 is the connection diagram with sealing ring for the compensating plate of the present invention;

Fig. 4 is the schematic diagram of sealing device of the present invention;

Fig. 5 is the A-A direction view of Fig. 4;

Fig. 6 is the left view of Fig. 4.

Specific embodiment

The present invention is described in detail below in conjunction with the accompanying drawings.

The crankcase leak test encapsulating method of the present invention, comprises the following steps:

1)Determine the sealing configuration line 20 of crankcase top surface, bottom surface, front end face and rear end face, see in Fig. 1(a)Thick in~(d) Black line;

2) the open loop sealing configuration line of each end face is compensated using metallic plate 21, be inlaid between metallic plate 21 and crankcase Sealing strip 23, is shown in formation closed loop sealing configuration line, sees in Fig. 2(a)Heavy black bar in~(d);

3)Shape according to each end face closed loop outline line makes corresponding profiling sealing ring 22, sealing strip 23 and profiling sealing ring 22 Vertical butt joint, it is ensured that No leakage, is shown in Fig. 3, using sealing device by the profiling sealing ring of top surface, bottom surface, front end face and rear end face Fit tightly with corresponding with the closed loop sealing configuration line of each end face respectively, complete the seal operation before crankcase each end face leak test.

In crankcase leak test encapsulating method adopt sealing device as Figure 4-Figure 6, including upper plate 2, middle plate 7, lower plate 11, Lead 3 and roller-conveying device 9, upper plate 2 is provided with oil cylinder 1, and lead 3 is fixed between upper plate 2 and lower plate 11, three The general frame of composition sealing device.Fairlead 18, fairlead 18 and the cooperation of lead 3 gap, middle plate 7 are fixed with middle plate 7 Can move between upper plate 2 and lower plate 11 along lead 3.Oil cylinder 1 is connected by connecting seat 4 with middle plate 7, and middle plate 7 is provided with Bottom surface plugging mechanism 6, front end face plugging mechanism 12 and rear end face plugging mechanism 8, lower plate 11 is provided with roller-way support base 17, top Face plugging mechanism 15 and workpiece locating mechanism 10, roller-conveying device 9 is located between middle plate 7 and lower plate 11, is fixed on middle plate Roller-way pull bar 5 be connected with roller-conveying device 9, roller-way pull bar 5 roller-conveying device 9 is hung on middle plate 7 and moves with it, under The lower section of plate 11 is provided with supporting leg 19, and supporting leg 19 is fixedly connected with base, for support meanss main body.

Roller-conveying device 9 includes two groups of wallboards, two line slide rails 16 and two groups of cylinders 13,14, two groups of wallboard compositions For the roller-way of conveying workpieces, two line slideways 16 are arranged at the lower section of roller-way and, every group wallboard connection one vertical with wallboard Individual cylinder, cylinder is used for driving wallboard to move along line slideway.Wherein bottom surface plugging mechanism 6, front end face plugging mechanism 12 and after End face blocking mechanism 8 adopts cylinder or hydraulic oil cylinder driving.

The job description of crankcase seals device:In retracted mode, workpiece is transported to device to oil cylinder 1 by rollgang 9 Interior specified location, workpiece is positioned and is lifted by air cylinder driven and departed from rollgang 9 by workpiece locating mechanism 10, subsequent conveying roller Two groups of wallboards in road 9 open to both sides in the presence of cylinder 13,14 and line slide rail 16, and now oil cylinder 1 stretches out, under middle plate 7 Fall, is declined by the roller-conveying device 9 that roller-way pull bar 5 is associated with middle plate 7, roller-conveying device 9 is seated in roller-way support base On 17, middle plate 7 continues to decline, and after middle plate 7 decline puts in place, workpiece drops to top surface plugging mechanism 15 with workpiece locating mechanism 10 On, now bottom surface plugging mechanism 6, rear end face plugging mechanism 8, front end face plugging mechanism 12 action, will with top surface plugging mechanism 15 Crankcase cavity seals, after leak test detection terminates, bottom surface plugging mechanism 6, rear end face plugging mechanism 8 and front end face plugging mechanism 12 Return in situ, workpiece is lifted by workpiece locating mechanism 10, and oil cylinder 1 is retracted, and middle plate 7 rises, and roller-conveying device 9 rises therewith, oil Cylinder 1 is retracted after putting in place, and roller-conveying device 9 wallboard merges back in situ, and workpiece seating is simultaneously arrived by 10 times original positions of workpiece locating mechanism On roller-conveying device 9, roller-conveying device 9 runs workpiece carrying device.

The present invention solves to seal before crankcase leak test by a kind of new crankcase seals mode and sealing device and is stranded Difficult problem.The inventive method is simply novel, structure mature and reliable, practical.

Claims (5)

1. crankcase leak test encapsulating method is it is characterised in that comprise the following steps:
1)Determine the sealing configuration line of crankcase top surface, bottom surface, front end face and rear end face;
2)The open loop sealing configuration line of each end face is compensated using compensating plate, forms closed loop sealing configuration line;
3)Shape according to each end face closed loop outline line makes corresponding profiling sealing ring, and by sealing device by top surface, bottom The profiling sealing ring of face, front end face and rear end face is fitted tightly with corresponding with the closed loop sealing configuration line of each end face respectively, completes Seal operation before crankcase each end face leak test.
2. crankcase leak test encapsulating method according to claim 1 is it is characterised in that described compensating plate is metallic plate, golden Belong to and between plate and crankcase, be inlaid with sealing strip, sealing strip and profiling sealing ring vertical butt joint.
3. be used for claim 1 described in crankcase leak test encapsulating method in adopt sealing device it is characterised in that:Including on Plate, middle plate, lower plate, lead and roller-conveying device, upper plate is provided with oil cylinder, lead be fixed on upper plate and lower plate it Between, middle plate is fixed with fairlead, fairlead is coordinated with lead gap, and oil cylinder is connected by connecting seat with middle plate, on middle plate Bottom surface plugging mechanism, front end face plugging mechanism and rear end face plugging mechanism are installed, lower plate is provided with roller-way support base, top surface Plugging mechanism and workpiece locating mechanism, roller-conveying device is located between middle plate and lower plate, is fixed on the roller-way pull bar on middle plate It is connected with roller-conveying device, the lower section of lower plate is provided with supporting leg, and supporting leg is fixedly connected with base.
4. sealing device according to claim 3 it is characterised in that:Described roller-conveying device include two groups of wallboards, two Bar line slide rail and two groups of cylinders, two groups of wallboards form the roller-way for conveying workpieces, and two line slideways are arranged at roller-way Lower section and, every group wallboard connection one cylinder vertical with wallboard, cylinder is used for driving wallboard to move along line slideway.
5. the sealing device according to claim 3 or 4 it is characterised in that:Described bottom surface plugging mechanism, front end face stopple plugging machine Structure and rear end face plugging mechanism are all using cylinder or hydraulic oil cylinder driving.
CN201610901813.7A 2016-10-17 2016-10-17 Crankcase leakage test sealing method and sealing device CN106404293A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610901813.7A CN106404293A (en) 2016-10-17 2016-10-17 Crankcase leakage test sealing method and sealing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610901813.7A CN106404293A (en) 2016-10-17 2016-10-17 Crankcase leakage test sealing method and sealing device

Publications (1)

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CN106404293A true CN106404293A (en) 2017-02-15

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108007647A (en) * 2017-11-29 2018-05-08 郑州斯倍思机电有限公司 A kind of plugging device of the airtight performance test bench of crankcase

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5431041A (en) * 1993-01-14 1995-07-11 Premaq Impex, Inc. Apparatus for testing the seal of wheel rims for cars and the like
CN202204652U (en) * 2011-08-26 2012-04-25 广西玉柴机器股份有限公司 Leak detection device for cylinder block
CN103487222A (en) * 2013-09-11 2014-01-01 津伦(天津)精密机械股份有限公司 Lifting type automatic leakage detection machine with follow-up downward-guiding function
CN203551218U (en) * 2013-10-14 2014-04-16 津伦(天津)精密机械股份有限公司 Leakage detection clamp with multi-layer sealing surface in one direction
CN104296937A (en) * 2014-11-06 2015-01-21 重庆科技学院 Dry type leak detection machine for engine oil basin

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5431041A (en) * 1993-01-14 1995-07-11 Premaq Impex, Inc. Apparatus for testing the seal of wheel rims for cars and the like
CN202204652U (en) * 2011-08-26 2012-04-25 广西玉柴机器股份有限公司 Leak detection device for cylinder block
CN103487222A (en) * 2013-09-11 2014-01-01 津伦(天津)精密机械股份有限公司 Lifting type automatic leakage detection machine with follow-up downward-guiding function
CN203551218U (en) * 2013-10-14 2014-04-16 津伦(天津)精密机械股份有限公司 Leakage detection clamp with multi-layer sealing surface in one direction
CN104296937A (en) * 2014-11-06 2015-01-21 重庆科技学院 Dry type leak detection machine for engine oil basin

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108007647A (en) * 2017-11-29 2018-05-08 郑州斯倍思机电有限公司 A kind of plugging device of the airtight performance test bench of crankcase
CN108007647B (en) * 2017-11-29 2019-12-17 郑州斯倍思机电有限公司 plugging device for crankcase gas tightness test board

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Application publication date: 20170215

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