CN110146227A - Engine cylinder cap air tightness detection equipment - Google Patents
Engine cylinder cap air tightness detection equipment Download PDFInfo
- Publication number
- CN110146227A CN110146227A CN201910555176.6A CN201910555176A CN110146227A CN 110146227 A CN110146227 A CN 110146227A CN 201910555176 A CN201910555176 A CN 201910555176A CN 110146227 A CN110146227 A CN 110146227A
- Authority
- CN
- China
- Prior art keywords
- cylinder head
- detection equipment
- fixture
- engine cylinder
- cylinder cap
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
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Classifications
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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
- G01M3/025—Details with respect to the testing of engines or engine parts
-
- 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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a kind of engine cylinder cap air tightness detection equipment, mobile height controller is carried out along the vertical direction and be set to the pressing device on height controller and for being pressed on cylinder head on fixture including water tank, for the fixture of clamping cylinder lid, for controlling fixture.Engine cylinder cap air tightness detection equipment of the invention, can be convenient the air-leakage test of efficiently complete engine cylinder cap, so as to improve engine cylinder cap air-leakage test working efficiency.
Description
Technical field
The invention belongs to engine cylinder cover air-leakage test technical fields, specifically, the present invention relates to a kind of engines
Cylinder head air tightness detection equipment.
Background technique
Engine cylinder cap, cylinder jacket and piston collectively constitute the combustion chamber of diesel engine, are that diesel engine bears high temperature, height
Press one of the components of operating condition.The bolt pretightening that top surface of cylinder cover is born is far longer than combustion pressure, cylinder head bottom surface
Bear the high-pressure gas pressure and thermic load that fuel combustion generates.When diesel engine works, mechanical stress and heat that cylinder head is born
Stress state is sufficiently complex.Cylinder head cavity arrangements have air intake duct, exhaust duct, inlet valve, exhaust valve and fuel injector etc..Cylinder head
Bottom plate, inlet and outlet door, the high-temperature gas that exhaust duct and fuel injector etc. burn with fuel in the combustion chamber and generated directly connect
Touching, bears and transmits a part of heat of high-temperature fuel gas；In addition, mechanical stress and thermal stress make cylinder head bottom plate be also easy to produce fatigue
Deformation.Cylinder head is equipped with cooling water cavity, is cooled down by cooling water to heated component, improves its thermic load, it is ensured that it can
By using.The cooling water cavity wall of cylinder head any one there are the casting flaws such as sand holes, loose or have crack fault and into, row
Valve seating, assembled state between fuel injector sleeve and cylinder head is bad all to make cooling water penetrate into or be directly leaked to combustion chamber.
If penetrate into combustion chamber cooling water inflow it is less, can with one combust of fuel, so that the wall surface of combustion chamber be made water occur
Dirt deposition directly affects heated component heat transfer and it is caused to cross cause thermal damage；If leakage is serious, into the cooling water of combustion chamber
Possibly even make diesel engine that water hammer failure occur and be heavily damaged.Cylinder head sand removal technique is blocked up (stopple) poor sealing and is caused
Cooling water leakage increases the water amount of disappearing, and serious consequence is to influence the completion of locomotive operation cross-channel.
In consideration of it, either new cylinder head still overhauls cylinder head, it is necessary to carry out cooling water cavity air-tight test, confirm water
Cavity wall and Valve seat, fuel injector sleeve and cylinder head assembled state and the stifled sealing state of technique are good, it is ensured that cylinder
It is intact to cover the operating condition within a time between overhauls(TBO).Existing cylinder head air-tight test is existed using water pressure test method
Be filled with gas in cooling water cavity, 0.5Mpa suppressed using hydraulic press manually, be allowed to keep 3 minutes or so, in the process to
The outer surface of cylinder head smears liquid soap and estimates inspection Check whether there is or not leakage failures, and then is able to confirm that leakage place, thus can
The underproof cylinder head of air-tightness is enough isolated.This test method(s) is widely used, and it is permanent to continue to use, but each cylinder head will consume examination
It tests with water, and subsidiary operation time is long, water cavity internal water accumulation not easy-clear also causes the contamination phenomenons such as experimental enviroment ponding.
Summary of the invention
The present invention is directed at least solve one of the technical problems existing in the prior art.For this purpose, the present invention provides a kind of hair
Motivation cylinder head air tightness detection equipment, it is therefore an objective to improve engine cylinder cap air-leakage test working efficiency.
To achieve the goals above, the technical scheme adopted by the invention is as follows: engine cylinder cap air tightness detection equipment, packet
Water tank is included, mobile height controller is carried out along the vertical direction for the fixture of clamping cylinder lid, for controlling fixture and sets
It is placed in the pressing device on height controller and for being pressed on cylinder head on fixture.
The fixture includes for placing the backing board of cylinder head, being set on backing board and for first with cylinder head
The first sealing block and be movably set on backing board and be used to be in contact with the second side of cylinder head that side is in contact
The second sealing block, the first sealing block and the second sealing block are positioned opposite.
The pressing device include positioned at the fixture top and for cylinder head apply pressing force pressure plate and
It is set on the height controller and carries out the first mobile elevating mechanism along the vertical direction for controlling pressure plate.
First elevating mechanism includes the first lifting motor being set on the height controller and with first
The first leadscrew-nut mechanism that lifting motor is connected with the pressure plate.
First elevating mechanism is arranged four.
The height controller includes that moveable lifter plate, the second lifting being set in rack along the vertical direction are electric
Machine and the second leadscrew-nut mechanism connecting with the second lifting motor and lifter plate, the pressing device are set to lifter plate
On.
Engine cylinder cap air tightness detection equipment of the invention can be convenient the airtight of efficiently complete engine cylinder cap
Property detection, so as to improve engine cylinder cap air-leakage test working efficiency.
Detailed description of the invention
This specification includes the following drawings, and shown content is respectively:
Fig. 1 is the structural schematic diagram of inventive engine cylinder head air tightness detection equipment；
In the figure, it is marked as 1, water tank；2, rack；3, backing board；4, the first sealing block；5, the second sealing block；6, pressure plate；
7, guide post；8, lifter plate；9, the first lifting motor；10, the first lead screw；11, the first nut；12, the second lifting motor；13,
Two lead screws；14, the second nut.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to a specific embodiment of the invention further details of
Explanation, it is therefore an objective to those skilled in the art be helped to have more complete, accurate and deep reason to design of the invention, technical solution
Solution, and facilitate its implementation.
It should be noted that in embodiment disclosed below, " first " and " second " not representative structure and/or
Absolute differentiation relationship functionally, does not represent the successive sequence that executes yet, and merely for convenience of description.
As shown in Figure 1, the present invention provides a kind of engine cylinder cap air tightness detection equipment, including rack 2, water tank 1,
For the fixture of clamping cylinder lid, for controlling fixture mobile height controller is carried out along the vertical direction and be set to height
Pressing device on control device and for being pressed on cylinder head on fixture.
Specifically, water tank 1 is the rectangular box of top opening and inner hollow as shown in Figure 1, storing water in water tank 1
Body structure, rack 2 are vertically arranged, and height controller is set in rack 2 and height controller is located at the upper of water tank 1
Side, height controller is for controlling fixture and being moved along the vertical direction by the cylinder head of clamp.To cylinder head
When carrying out air-leakage test, cylinder head by height controller control fixture and thereon is vertically downwards towards water tank 1
Inside is mobile, final cylinder head immerses in water tank 1, the water submerged that cylinder head is stored in water tank 1, and fixture will be provided by gas source
Air is guided to cylinder head, and whether observe at cylinder head has bubble generation, and then may determine that the air-tightness of cylinder head is
It is no to meet the requirements.If bubble-free generates at cylinder head, then it represents that the air-tightness of cylinder head is qualified, conversely, then cylinder head
Air-tightness is unqualified.
As shown in Figure 1, fixture includes for placing the backing board 3 of cylinder head, being set on backing board 3 and be used for and cylinder
The first sealing block 4 and be movably set on backing board 3 and for second with cylinder head that the first side of lid is in contact
The second sealing block 5 that side is in contact, the first sealing block 4 and the second sealing block 5 are positioned opposite.Backing board 3 be it is horizontally disposed,
The top surface of backing board 3 is horizontal plane, and cylinder head to be tested is placed on backing board 3, the top surface of backing board 3 and the bottom of cylinder head
Face fits, and backing board 3 is by the sealing bottom surface of cylinder head.First sealing block 4 is fixed on the top surface of backing board 3, cylinder
The first side and second side of lid are two opposite outer surfaces of cylinder head, the first side of the first sealing block 4 and cylinder head
Face contact seals each opening having in the first side of cylinder head.Second sealing block 5 and the gas source of external setting connect
It connects, gas source is the air accumulator of interior storage higher air, and air accumulator is connect with air compressor.When carrying out air-leakage test, gas
Source is internally provided with air intake duct to gas, the second sealing block 5 is provided inside the second sealing block 5, and air intake duct reception is provided by gas source
Gas and for guiding gas to the inside of cylinder head.After clamp cylinder head, the second sealing block 5 and the first sealing
Block 4 be in apart from nearest state, the first side of cylinder head is in contact with the first sealing block 4, the second side of cylinder head and
Second sealing block 5 is in contact, while second side of the air intake duct of the second sealing block 5 by the gas from air accumulator through cylinder head
On opening guide into each cavity inside cylinder head, namely to the gas for being filled with certain pressure inside cylinder head.In height
It spends after control device immerses fixture and cylinder head in water tank 1, whether cylinder head at have bubble generation, then can be with if can observe
Judge whether the air-tightness of cylinder head meets the requirements.
It is provided with the second sealing block 5 of control on backing board 3 and carries out mobile drive in the horizontal direction relative to the first sealing block 4
Dynamic device (not shown), driver setting are multiple.Driver is connect with the second sealing block 5, the moving direction of the second sealing block 5
Parallel with first direction, All Drives are on the same straight line parallel with second direction, first direction and second party
To being that horizontal direction and first direction and second direction are perpendicular, the first sealing block 4 and the second sealing block 5 is in and first party
To on parallel same straight line.Preferably, driver is cylinder and driver setting three, the cylinder body of driver and bottom
Supporting plate 3 is fixedly connected, and the piston rod of driver is fixedly connected with the second sealing block 5, and three drivers are synchronized and stretched, in turn
It controls the second sealing block 5 to be moved relative to the first sealing block 4, realizes the clamping and release to cylinder head.
As shown in Figure 1, pressing device includes the top positioned at fixture and the pressure plate 6 for applying pressing force to cylinder head
Be set on height controller and carry out the first mobile elevating mechanism along the vertical direction for controlling pressure plate 6, first
Elevating mechanism setting is multiple.First elevating mechanism includes the first lifting motor 9 being set on height controller and with
The first leadscrew-nut mechanism that one lifting motor 9 and pressure plate 6 connect.Pressure plate 6 is horizontally disposed, pressure plate 6 and first party
To parallel with second direction, the bottom surface of pressure plate 6 is horizontal plane, and cylinder head to be tested is placed on backing board 3, and first is close
After sealing block 4 and 5 clamping cylinder lid of the second sealing block, the first elevating mechanism control pressure plate 6 is moved down, and finally makes pressure plate
6 bottom surface and the top surface of cylinder head fit, and pressure plate 6 seals the top surface of cylinder head.
As shown in Figure 1, the first leadscrew-nut mechanism includes the first lead screw 10 being rotatably arranged on backing board 3 and sets
The first nut 11 for being placed on pressure plate 6 and matching with the first lead screw 10, the first lifting motor 9 are set on lifter plate 8, the
The motor shaft of one lifting motor 9 is connect with the upper end of the first lead screw 10, after the operating of the first lifting motor 9, the rotation of the first lead screw 10,
And then pressure plate 6 is driven to be gone up and down, realize clamping and release to cylinder head.The setting of first elevating mechanism is multiple, improves pressure
The stability that tight plate 6 is run, and pressure plate 6 can be enable to apply uniform pressing force to cylinder head, cylinder head stress is equal
It is even, reduce the risk that damage is caused to cylinder head.
As shown in Figure 1, in the present embodiment, the first elevating mechanism is arranged four, and four the first elevating mechanisms are in rectangle point
Cloth.Pressure plate 6 is rectangular slab, and four the first elevating mechanisms, which are arranged and respectively arrange in two rows, sets two the first elevating mechanisms,
Two the first elevating mechanisms in same row are on the same straight line parallel with first direction, four the first elevating mechanisms
It is to be connect at four right angle corners of pressure plate 6 with pressure plate 6 respectively, the length direction of pressure plate 6 is equal with second direction
Row, the width direction of pressure plate 6 is parallel with first direction, after cylinder head is placed on backing board 3, the length direction of cylinder head
Parallel with second direction, the width direction of cylinder head is parallel with first direction, and the base area of pressure plate 6 is greater than cylinder head
Top surface area, improve reliability.
As shown in Figure 1, height controller include along the vertical direction moveable lifter plate 8, be set in rack 2
Two lifting motors 12 and the second leadscrew-nut mechanism being connect with the second lifting motor 12 and lifter plate 8, pressing device setting
In on lifter plate 8.Lifter plate 8 is located at the top of pressure plate 6 and lifter plate 8 is parallel with pressure plate 6, and the first lifting motor 9 is solid
It is fixed to be arranged on lifter plate 8.Second lifting motor 12 is fixed in rack 2, in the first sealing block 4 and the second sealing block 5
After clamping cylinder lid and 6 compression cylinder lid of pressure plate, the second elevating mechanism control lifter plate 8 is moved down, and lifter plate 8 drives the
One elevating mechanism, pressure plate 6, fixture and cylinder head move downward simultaneously, and immerse cylinder head in water tank 1, cylinder head quilt
The water submerged stored in water tank 1.Second leadscrew-nut mechanism includes the second lead screw 13 being rotatably arranged in rack 2 and sets
The second nut 14 for being placed on lifter plate 8 and being matched with the second lead screw 13, the motor shaft of the second lifting motor 12 and second
The upper end of thick stick 13 connects, after the operating of the second lifting motor 12, the rotation of the second lead screw 13, and then lifter plate 8 is driven to be gone up and down.
As shown in Figure 1, fixture further includes being vertically arranged on backing board 3 and for leading to what pressure plate 6 play the guiding role
Column 7, guide post 7 is between backing board 3 and lifter plate 8, and guide post 7 is arranged multiple, and the lower end of guide post 7 is fixedly connected with backing board 3,
The upper end of guide post 7 is fixedly connected with lifter plate 8, and pressure plate 6 has the pilot hole for allowing guide post 7 to pass through, and guide post 7 is cylindrical body, is led
Xiang Kongwei circular hole.The setting of guide post 7 while improving 6 operation stability of pressure plate, also improves the bearing capacity of fixture,
Ensure that fixture is connect reliably with height controller, and makes detection device overall structure more compact.
The present invention is exemplarily described in conjunction with attached drawing above.Obviously, present invention specific implementation is not by above-mentioned side
The limitation of formula.As long as using the improvement for the various unsubstantialities that the inventive concept and technical scheme of the present invention carry out；Or not
It is improved, above-mentioned conception and technical scheme of the invention are directly applied into other occasions, in protection scope of the present invention
Within.
Claims (6)
1. engine cylinder cap air tightness detection equipment, it is characterised in that: including water tank, the fixture for clamping cylinder lid, use
Mobile height controller is carried out along the vertical direction in control fixture and is set on height controller and for by cylinder
Cover the pressing device being pressed on fixture.
2. engine cylinder cap air tightness detection equipment according to claim 1, it is characterised in that: the fixture includes using
In the first sealing block for placing the backing board of cylinder head, being set on backing board and being used to be in contact with the first side of cylinder head
Movably it is set to the second sealing block on backing board and for being in contact with the second side of cylinder head, the first sealing block
It is positioned opposite with the second sealing block.
3. engine cylinder cap air tightness detection equipment according to claim 1 or 2, it is characterised in that: the compression dress
It sets the top including being located at the fixture and the pressure plate for applying pressing force to cylinder head is controlled with the height is set to
The first mobile elevating mechanism is carried out along the vertical direction on device and for controlling pressure plate.
4. engine cylinder cap air tightness detection equipment according to claim 3, it is characterised in that: first elevator
Structure includes the first lifting motor being set on the height controller and connects with the first lifting motor and the pressure plate
The first leadscrew-nut mechanism connect.
5. engine cylinder cap air tightness detection equipment according to claim 3 or 4, it is characterised in that: described first liter
Descending mechanism is arranged four.
6. according to any engine cylinder cap air tightness detection equipment of claim 3 to 5, it is characterised in that: the height
Degree control device include along the vertical direction moveable lifter plate, the second lifting motor for being set in rack and with second liter
The second leadscrew-nut mechanism that drop motor is connected with lifter plate, the pressing device are set on lifter plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910555176.6A CN110146227A (en) | 2019-06-25 | 2019-06-25 | Engine cylinder cap air tightness detection equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910555176.6A CN110146227A (en) | 2019-06-25 | 2019-06-25 | Engine cylinder cap air tightness detection equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110146227A true CN110146227A (en) | 2019-08-20 |
Family
ID=67596628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910555176.6A Pending CN110146227A (en) | 2019-06-25 | 2019-06-25 | Engine cylinder cap air tightness detection equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110146227A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987327A (en) * | 2019-11-22 | 2020-04-10 | 深圳市深科工程检测有限公司 | Door and window gas tightness check out test set |
| CN111323180A (en) * | 2020-04-30 | 2020-06-23 | 虞结全 | Automatic air tightness detection device for valve seat of cylinder cover |
| CN111649875A (en) * | 2020-06-12 | 2020-09-11 | 安徽恒达管业有限责任公司 | A pressure testing machine for pipeline leakproofness detects |
| CN114858434A (en) * | 2022-05-13 | 2022-08-05 | 江苏万恒铸业有限公司 | Exhaust device for hydrostatic test of steam turbine cylinder |
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| CN201163231Y (en) * | 2006-12-30 | 2008-12-10 | 比亚迪股份有限公司 | Leakage test device for cylinder cap |
| CN101393065A (en) * | 2008-11-04 | 2009-03-25 | 兰州金牛轨道交通装备有限责任公司 | Pressure test apparatus for cooling water cavity of pneumatic lifting cylinder cap |
| CN201497618U (en) * | 2009-09-04 | 2010-06-02 | 常州机电职业技术学院 | Diesel engine cylinder cover water channel leakage testing machine |
| CN202676393U (en) * | 2012-06-05 | 2013-01-16 | 朱熙 | Leak test machine for cylinder head cover |
| CN203455140U (en) * | 2013-09-16 | 2014-02-26 | 潍柴动力(潍坊)再制造有限公司 | Remanufacturing engine cylinder cap air tight test apparatus |
| CN203519275U (en) * | 2013-10-25 | 2014-04-02 | 重庆科技学院 | Water inspection machine for engine cylinder head cover |
| CN109387340A (en) * | 2018-12-05 | 2019-02-26 | 福建元晟汽车配件科技有限公司 | New-energy automobile power battery assembly housing cabinet air-tightness detection device and method |
-
2019
- 2019-06-25 CN CN201910555176.6A patent/CN110146227A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201163231Y (en) * | 2006-12-30 | 2008-12-10 | 比亚迪股份有限公司 | Leakage test device for cylinder cap |
| CN101393065A (en) * | 2008-11-04 | 2009-03-25 | 兰州金牛轨道交通装备有限责任公司 | Pressure test apparatus for cooling water cavity of pneumatic lifting cylinder cap |
| CN201497618U (en) * | 2009-09-04 | 2010-06-02 | 常州机电职业技术学院 | Diesel engine cylinder cover water channel leakage testing machine |
| CN202676393U (en) * | 2012-06-05 | 2013-01-16 | 朱熙 | Leak test machine for cylinder head cover |
| CN203455140U (en) * | 2013-09-16 | 2014-02-26 | 潍柴动力(潍坊)再制造有限公司 | Remanufacturing engine cylinder cap air tight test apparatus |
| CN203519275U (en) * | 2013-10-25 | 2014-04-02 | 重庆科技学院 | Water inspection machine for engine cylinder head cover |
| CN109387340A (en) * | 2018-12-05 | 2019-02-26 | 福建元晟汽车配件科技有限公司 | New-energy automobile power battery assembly housing cabinet air-tightness detection device and method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987327A (en) * | 2019-11-22 | 2020-04-10 | 深圳市深科工程检测有限公司 | Door and window gas tightness check out test set |
| CN111323180A (en) * | 2020-04-30 | 2020-06-23 | 虞结全 | Automatic air tightness detection device for valve seat of cylinder cover |
| CN111649875A (en) * | 2020-06-12 | 2020-09-11 | 安徽恒达管业有限责任公司 | A pressure testing machine for pipeline leakproofness detects |
| CN111649875B (en) * | 2020-06-12 | 2022-02-08 | 安徽恒达管业有限责任公司 | A pressure testing machine for pipeline leakproofness detects |
| CN114858434A (en) * | 2022-05-13 | 2022-08-05 | 江苏万恒铸业有限公司 | Exhaust device for hydrostatic test of steam turbine cylinder |
| CN114858434B (en) * | 2022-05-13 | 2023-05-09 | 江苏万恒铸业有限公司 | Exhaust device for hydrostatic test of steam turbine cylinder |
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Application publication date: 20190820 |
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