CN201615820U - Gas tightness detector for intake and exhaust valve of engine cylinder end - Google Patents
Gas tightness detector for intake and exhaust valve of engine cylinder end Download PDFInfo
- Publication number
- CN201615820U CN201615820U CN2010201499014U CN201020149901U CN201615820U CN 201615820 U CN201615820 U CN 201615820U CN 2010201499014 U CN2010201499014 U CN 2010201499014U CN 201020149901 U CN201020149901 U CN 201020149901U CN 201615820 U CN201615820 U CN 201615820U
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- inlet
- exhaust
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Abstract
The utility model discloses a gas tightness detector for an intake and exhaust valve of an engine cylinder end, comprising a gas tightness detector, a compaction cylinder, a valve puller cylinder, an intake valve seal cylinder, an exhaust valve seal cylinder, an intake pipe plugging cylinder, an exhaust pipe plugging cylinder, a control cabinet and a display control panel which are installed and fixed on a rack, wherein the compaction cylinder is installed with a detected cylinder end pressed by a telescoping cylinder; the valve puller cylinder presses against the exhaust and intake valve through the telescoping cylinder; a pressure regulating valve is connected between the valve puller cylinder and a compaction air source; the intake and exhaust valve seal cylinders respectively seal the air inlet channel and the air outlet channel of the detected cylinder end; and the intake and exhaust pipe plugging cylinders are respectively plugged at intake and exhaust valve spring-leaf retainers of the detected cylinder end. The detector directly uses the puller cylinder to press against the intake and exhaust valves, and can truly simulate the acting force between the valve stem head and the retainer after loading the valve spring, thus leading the tested data to accurately show the sealing performance under practical work state.
Description
Technical field
The utility model relates to the sealing property measuring technology of engineering goods.
Background technology
In motorcycle engine (or general gasoline engines) the cylinder head production run, when unassembled valve spring, need the sealing property of inlet and outlet door be detected.More common test cylinder head valve sealing apparatus and method as shown in Figure 1, this pick-up unit adopted cylinder 1, pressure head 2, spring 7, hold out against structures such as 8, it produces the firing chamber that pressure F makes pressure head 2 shutoff cylinder heads 5 by cylinder 1, holding out against in the pressure head 28 pushed down valve tip A 4A and valve tip B 4B, to the firing chamber inflation, detect cylinder head valve sealing performance by the inflation inlet on the pressure head 3 thus.
As seen from Figure 1, the pressure F that cylinder 1 produces acts on two parts, and a part of power is to act on the polyamine fat O-ring seal 6, and another part masterpiece is used on valve tip A 4A, the valve tip B 4B.This shows, the pressure that acts on the valve tip is difficult to determine, can't simulate and load onto valve spring valve tip and the real interaction force of cylinder head seat ring (cylinder head load onto seat ring and valve tip effect can obtain by calculating behind the spring), therefore there is inaccuracy in detected thus cylinder head valve sealing performance situation.
Summary of the invention
The utility model proposes a kind of engine cylinder head inlet and outlet door impermeability machines at the problem that prior art exists, and solves prior art and can not real simulation loads onto seat ring and valve tip acting force problem behind the spring.
The technical solution of the utility model is as follows:
A kind of engine cylinder head inlet and outlet door impermeability machines, it comprises that air-leakage detector, clamping cylinder, valve hold out against cylinder, inlet valve sealing cylinder, exhaust valve sealing cylinder, draft tube shutoff cylinder, gas outlet shutoff cylinder, switch board and display control panel, and above-mentioned all parts all are fixed on the frame.
In the centre of described frame the detection platform of placing cylinder head is set, the loading line of described air-leakage detector inserts the air intake duct and the exhaust duct of the detected cylinder head on the detection platform respectively;
Described clamping cylinder is installed in the top of detected cylinder head placement platform, and following the rectifying of its telescoping cylinder is against on the detected cylinder head.Clamping cylinder can be provided with one, also can be provided with two.
Described valve holds out against the top that cylinder is installed in detected cylinder head placement platform, and following the rectifying of its telescoping cylinder is against on exhaust valve rod end face and the inlet valve rod end surface.Valve holds out against between cylinder and the compressed air source and is connected with pressure regulator valve.
Described valve holds out against cylinder can adopt two, be respectively that exhaust valve holds out against cylinder and inlet valve holds out against cylinder, their oblique respectively symmetries are installed in the both sides of detected cylinder head top, the axial line of its telescoping cylinder respectively with the axial line of the exhaust valve of detected cylinder head and inlet valve on a line.
Described valve holds out against cylinder also can adopt one, connects a Λ type fork arm at its telescoping cylinder front end, is withstood on respectively on the inlet and outlet door rod end head by Λ type fork arm front end.
Described inlet valve sealing cylinder and exhaust valve sealing cylinder are installed in the both sides of detection platform, and air intake duct and the exhaust duct to detected cylinder head seals respectively.
Described draft tube shutoff cylinder and gas outlet shutoff cylinder are installed in the both sides, below of detection platform respectively, the top of their telescoping cylinder respectively shutoff on the inlet-valve spring seat ring of detected cylinder head, exhaust valve spring-leaf retainer.
Described switch board is connected with each cylinder, air-leakage detector and display control panel respectively by signal wire or control line.
By said structure as can be seen, the utlity model has following tangible advantage:
This machines directly removes to hold out against inlet and exhaust valve with holding out against cylinder, can regulate compressed-air actuated pressure by the pressure regulator valve on the source of the gas pipeline of regulating cylinder, reach the acting force of regulating valve tip and seat ring, but real simulation is loaded onto valve tip and seat ring acting force after the valve spring, thus the sealing property of the data that make test under more can accurate response actual working state platform.
Description of drawings
Fig. 1 is the fundamental diagram that existing cylinder head impermeability detects;
Fig. 2 is the structural representation (adopting two valves to hold out against cylinder) of the engine cylinder head inlet and outlet door impermeability machines that the utility model proposes;
The fundamental diagram of Fig. 3 machines shown in Figure 2;
Fig. 4 is the structural representation (adopting a valve to hold out against cylinder) of the engine cylinder head inlet and outlet door impermeability machines that the utility model proposes;
Fig. 5 adopts a valve to hold out against the cylinder head of machines of cylinder and the structural representation of cylinder portion;
Fig. 6 is the I portion enlarged diagram of Fig. 5
Fig. 7 is switch board, the airtight detector installation site synoptic diagram on frame.
Among the figure: 1 cylinder, 2 pressure heads, 3 inflation inlets, 4A valve tip A, 4B valve tip B, 5 cylinder heads, 6 polyurethane O-ring seals, 7 springs, 8 hold out against head, 9 display control panels, 10 frames, 11 double-button boxes, 12 switch boards, 13 airtight detectors, 14 detection platform, 15 detected cylinder heads, 16 loading lines, 17 pressure regulator valves, 18 compressed air sources, 19A shape fork arm 20 valve stem end faces
The F1 clamping cylinder, the F2 exhaust valve holds out against cylinder, and the F3 inlet valve holds out against cylinder, F4 draft tube shutoff cylinder, F5 gas outlet shutoff cylinder, F6 inlet valve sealing cylinder, F7 exhaust valve sealing cylinder, the F8 valve holds out against cylinder, F9 left side clamping cylinder, the right clamping cylinder of F10
The K1 air intake duct, the K2 exhaust duct
Embodiment
Below in conjunction with drawings and Examples the utility model is further specified
Referring to Fig. 2 and Fig. 7, this machines has the movably frame 10 of an integral body, installed on frame 10 that air-leakage detector 13, clamping cylinder F1, exhaust valve hold out against cylinder F2, inlet valve holds out against cylinder F3, inlet valve sealing cylinder F6, exhaust valve sealing cylinder F7, draft tube shutoff cylinder F4, gas outlet shutoff cylinder F5, switch board 12 and display control panel 9, the machine that forms a whole.
In the centre of frame 9 detection platform 14 of placing cylinder head is set, the loading line 16 of air-leakage detector 13 inserts the air intake duct and the exhaust duct of the detected cylinder head 15 on the detection platform respectively.
Clamping cylinder F1 is installed in the top of detection platform, and following the rectifying of its telescoping cylinder is against on the detected cylinder head 15.
Exhaust valve holds out against cylinder F2 and inlet valve holds out against the both sides that the oblique symmetry of cylinder F3 is installed in clamping cylinder F1, the axial line of their telescoping cylinder respectively with the axial line of the exhaust valve of detected cylinder head 15 and inlet valve on a line, the lower end just is being against respectively on the valve stem end face 20 of exhaust and air inlet.Holding out against cylinder F2 and inlet valve at exhaust valve holds out against and is connected with pressure regulator valve 17 (referring to Fig. 3) between cylinder F3 and their compressed air source 18 respectively.
Inlet valve sealing cylinder F6 and exhaust valve sealing cylinder F7 are installed in the both sides of detection platform 14, and air intake duct K1 and the exhaust duct K2 to detected cylinder head 15 seals (referring to Fig. 3) respectively.
Draft tube shutoff cylinder F4 and gas outlet shutoff cylinder F5 are installed in the both sides, below of detection platform 14 respectively, the top of their telescoping cylinder respectively shutoff on the inlet-valve spring seat ring of detected cylinder head 15, exhaust valve spring-leaf retainer.
Referring to Fig. 7, switch board 12 and airtight detector 13 are arranged in the bottom of frame 10, and display control panel 9 is arranged in the top of frame.Switch board 12 is connected with each cylinder, air-leakage detector and display control panel respectively by signal wire or control line.In addition, also be provided with double-button box 11, must press test button simultaneously by both hands, equipment could start, and can avoid a manual manipulation button, a hand loading and unloading cylinder head to bring potential safety hazard.
In conjunction with referring to Fig. 3, the course of work of this machines is as follows:
After being placed into detected cylinder head 15 on the detection platform, control clamping cylinder F1 action compresses detected cylinder head 15 from the top.Control exhaust valve then and hold out against cylinder F2 and inlet valve and hold out against cylinder F3 action and hold out against the inlet and outlet valve respectively, control draft tube shutoff cylinder F4 simultaneously and gas outlet shutoff cylinder F5 carries out shutoff to inlet and outlet pipeline end face.After shutoff finishes, control inlet valve sealing cylinder F6 and exhaust valve sealing cylinder F7 action, be sealed into, exhaust valve port, and 13 pairs of cylinder heads of control air-leakage detector are inflated, behind the inflation certain hour, close gas admittance valve, make the pressure equilibrium that gas keeps certain hour in the cavity, and then by air-leakage detector gaseous tension in the detected cylinder head is detected, judge by the pressure numeral that descends whether the air-tightness of detected cylinder head is qualified.
Referring to Fig. 4, Fig. 5 and Fig. 6, this machines also can adopt a valve to hold out against cylinder, two modes that clamping cylinder compresses.Left side clamping cylinder F9 and right clamping cylinder F10 are pressed on the detected cylinder head 15 from the top respectively, and its valve holds out against cylinder F8 at Λ type fork arm 19 of its telescoping cylinder front end connection, is withstood on respectively on the valve stem end face 20 of inlet and outlet door by Λ type fork arm 19 front ends.
Its course of work is as follows:
After being placed into detected cylinder head 15 on the detection platform 14, control left clamping cylinder F9 and right clamping cylinder F10 action, compress detected cylinder head 15 from the top.Control valve then and hold out against cylinder F8 action and hold out against the inlet and outlet valve simultaneously, control draft tube shutoff cylinder F4 and gas outlet shutoff cylinder F55 carry out shutoff to inlet and outlet pipeline end face.After shutoff finishes, control inlet valve sealing cylinder F6 and exhaust valve sealing cylinder F7 action, be sealed into, exhaust valve port, and 13 pairs of cylinder heads of control air-leakage detector are inflated, behind the inflation certain hour, close gas admittance valve, make the pressure equilibrium that gas keeps certain hour in the cavity, and then by air-leakage detector gaseous tension in the detected cylinder head is detected, judge by the pressure numeral that descends whether the air-tightness of detected cylinder head is qualified.
Claims (3)
1. engine cylinder head inlet and outlet door impermeability machines, it comprises that air-leakage detector, clamping cylinder, valve hold out against cylinder, inlet valve sealing cylinder, exhaust valve sealing cylinder, draft tube shutoff cylinder, gas outlet shutoff cylinder, switch board and display control panel, and above-mentioned all parts all are fixed on the frame;
It is characterized in that: be provided with the detection platform of placing cylinder head in the centre of described frame, the loading line of described air-leakage detector inserts the air intake duct and the exhaust duct of the detected cylinder head on the detection platform respectively;
Described clamping cylinder is installed in the top of detected cylinder head placement platform, and following the rectifying of its telescoping cylinder is against on the detected cylinder head;
Described valve holds out against the top that cylinder is installed in detected cylinder head placement platform, and following the rectifying of its telescoping cylinder is against on exhaust valve rod end face and the inlet valve rod end surface, and valve holds out against between cylinder and the compressed air source and is connected with pressure regulator valve;
Described inlet valve sealing cylinder and exhaust valve sealing cylinder are installed in the both sides of detection platform, and air intake duct and the exhaust duct to detected cylinder head seals respectively;
Described draft tube shutoff cylinder and gas outlet shutoff cylinder are installed in the both sides, below of detection platform respectively, the top of their telescoping cylinder respectively shutoff on the inlet-valve spring seat ring of detected cylinder head, exhaust valve spring-leaf retainer;
Described switch board is connected with each cylinder, air-leakage detector and display control panel respectively by signal wire or control line.
2. engine cylinder head inlet and outlet door impermeability machines according to claim 1 is characterized in that:
Described clamping cylinder is provided with one or be symmetrical arranged two, is positioned at detected cylinder head top.
3. engine cylinder head inlet and outlet door impermeability machines according to claim 1 is characterized in that:
Described valve holds out against cylinder and adopts two, be respectively that exhaust valve holds out against cylinder and inlet valve holds out against cylinder, their oblique respectively symmetries are installed in the both sides of detected cylinder head top, the axial line of their telescoping cylinder respectively with the axial line of the exhaust valve of detected cylinder head and inlet valve on a line, the front end of telescoping cylinder withstands on respectively on the inlet and outlet door rod end head;
Perhaps, described valve holds out against cylinder and adopts one, and the front end that holds out against the telescoping cylinder of cylinder at described valve connects a Λ type fork arm, is withstood on respectively on the inlet and outlet door rod end head by two ends of Λ type fork arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201499014U CN201615820U (en) | 2010-04-02 | 2010-04-02 | Gas tightness detector for intake and exhaust valve of engine cylinder end |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201499014U CN201615820U (en) | 2010-04-02 | 2010-04-02 | Gas tightness detector for intake and exhaust valve of engine cylinder end |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201615820U true CN201615820U (en) | 2010-10-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201499014U Expired - Fee Related CN201615820U (en) | 2010-04-02 | 2010-04-02 | Gas tightness detector for intake and exhaust valve of engine cylinder end |
Country Status (1)
| Country | Link |
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| CN (1) | CN201615820U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607782A (en) * | 2012-03-20 | 2012-07-25 | 江苏欧翔机车有限公司 | Air tightness detecting equipment of engine cylinder head |
| CN103528760A (en) * | 2013-10-25 | 2014-01-22 | 重庆科技学院 | Tool for detecting sealing property of water pump of engine |
| CN103837309A (en) * | 2014-03-26 | 2014-06-04 | 零八一电子集团四川天源机械有限公司 | Air valve sealing performance automatic checking device |
| CN103940555A (en) * | 2014-02-21 | 2014-07-23 | 中国第一汽车股份有限公司 | Diesel-engine air valve and cylinder head seat retainer leakage detecting and repairing method |
| CN105403368A (en) * | 2015-12-07 | 2016-03-16 | 江苏沃得机电集团有限公司 | Sealing testing machine especially for valve conical surface |
| CN108645579A (en) * | 2018-04-12 | 2018-10-12 | 湖北赛恩斯科技股份有限公司 | The airtight detection method of vehicular engine cylinder head valve |
-
2010
- 2010-04-02 CN CN2010201499014U patent/CN201615820U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102607782A (en) * | 2012-03-20 | 2012-07-25 | 江苏欧翔机车有限公司 | Air tightness detecting equipment of engine cylinder head |
| CN103528760A (en) * | 2013-10-25 | 2014-01-22 | 重庆科技学院 | Tool for detecting sealing property of water pump of engine |
| CN103940555A (en) * | 2014-02-21 | 2014-07-23 | 中国第一汽车股份有限公司 | Diesel-engine air valve and cylinder head seat retainer leakage detecting and repairing method |
| CN103837309A (en) * | 2014-03-26 | 2014-06-04 | 零八一电子集团四川天源机械有限公司 | Air valve sealing performance automatic checking device |
| CN103837309B (en) * | 2014-03-26 | 2016-10-12 | 零八一电子集团四川天源机械有限公司 | Valve sealing performance automatic checking device |
| CN105403368A (en) * | 2015-12-07 | 2016-03-16 | 江苏沃得机电集团有限公司 | Sealing testing machine especially for valve conical surface |
| CN108645579A (en) * | 2018-04-12 | 2018-10-12 | 湖北赛恩斯科技股份有限公司 | The airtight detection method of vehicular engine cylinder head valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20150402 |
|
| EXPY | Termination of patent right or utility model |