CN101750191A - Test bench for tightness of oil conduit of engine camshaft - Google Patents
Test bench for tightness of oil conduit of engine camshaft Download PDFInfo
- Publication number
- CN101750191A CN101750191A CN200910207605A CN200910207605A CN101750191A CN 101750191 A CN101750191 A CN 101750191A CN 200910207605 A CN200910207605 A CN 200910207605A CN 200910207605 A CN200910207605 A CN 200910207605A CN 101750191 A CN101750191 A CN 101750191A
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- slide unit
- push rod
- camshaft
- tightness
- sleeve
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Abstract
The invention discloses a test bench for tightness of an oil conduit of an engine camshaft, which comprises a base, a front sliding way and a rear sliding way. An ejector rod is sleeved in the front sliding way and the rear sliding way respectively. Axial leads of the two ejector rods are positioned in the same horizontal line. A front end of at least one ejector rod is provided with an air passage. An air inlet of the air passage is formed on a side wall of the front end of the ejector rod, and an air outlet is formed on the end face of the front end head of the ejector rod. The shape of the front end head of the ejector rod is a tapered end head matched with the shape of a technology hole at an opening of the oil conduit of the camshaft to be tested. A step surface is formed at the front end of the ejector rod close to the tapered end head. A seal gas ring is sleeved on the step surface, so that an air-tight seal is formed between the technology hole and the front end head of the ejector rod during detection. The test bench has the advantages of ingenious conception and convenient operation, and can effectively test the tightness of the oil conduit of the engine camshaft.
Description
Technical field
The invention belongs to engine testing tool technical field, specifically, relate to a kind of test bench for tightness of oil conduit of engine camshaft.
Background technology
In engine, camshaft is installed on engine cylinder and covers, and for guaranteeing that engine well moves, must need oil lubricating at camshaft journal and place, engine cylinder cover camshaft journal hole, reduces friction to avoid the camshaft locking.Adopt left end that oil supply hole 14 (as shown in Figure 3) is set at present at camshaft, engine oil pump pump oil, the oil duct that machine oil is offered by cylinder body, cylinder cap etc. enters oilhole 14, inject lubricating oil toward camshaft oil gallery, described camshaft oil gallery is through the axle center of whole camshaft, lubricated oil outlet 15 is set on camshaft simultaneously, the machine oil that utilizes said engine oil to be pumped into just can play lubricated effect with the surface of contact of lubricating oil from oil outlet injection camshaft journal and cylinder cap journal hole by camshaft oil gallery.In addition, be provided with steel ball 16,, reach the oil duct that makes between the steel ball and be in sealing state, prevent that lubricating oil from revealing from the camshaft two ends by steel ball 16 both ends open interference fit with the camshaft oil gallery hole at the two ends of camshaft.
In the said structure, the sealing of the camshaft oil gallery especially sealed at both ends property of oil duct becomes one of key of engine quality quality, most of engines cause leakage of oil because of the camshaft oil gallery poor sealing, at the easiest generation oil leakage phenomenon of surface of contact of camshaft two ends steel ball and oil duct opening.In case machine oil pressure release, thereby will cause the not enough surface of contact lack of lubrication that makes camshaft journal and cylinder cap journal hole of machine oil that injects lubricated face from the oil duct oil outlet, camshaft and cylinder cap supported hole and even relevant moving component locking or heel and toe wear influence the serviceable life of engine.
Therefore, before dispatching from the factory, camshaft is necessary the impermeability of camshaft oil gallery is detected.But at present, a kind of effective testing tool and method are not arranged also, do not make corresponding precautionary measures, just under situation about going wrong, change or keep in repair at this phenomenon.
Summary of the invention
For solving above technical matters, the object of the present invention is to provide a kind of testboard bay of effectively detection of engine camshaft oil gallery sealing.
Technical scheme of the present invention is as follows:
A kind of test bench for tightness of oil conduit of engine camshaft, comprise pedestal, preceding slide unit and back slide unit, wherein preceding slide unit and back slide unit can horizontal slips on described pedestal, before described, be set with preceding push rod in the slide unit, in the slide unit of back, be set with the back push rod, push rod is on the same horizontal linear with the axial line of back push rod before described, push rod is provided with air flue with the front end of back one of them push rod of push rod before described, the air intake opening of this air flue is arranged on the push rod front end side wall, the gas outlet is arranged on the end face of push rod front end termination, the tapering termination that the fabrication hole shape of described push rod front end termination profile and camshaft oil gallery opening part to be measured is complementary, form step surface at push rod front end near described tapering termination, be set with seal gas ring on this step surface, so that when detecting, form hermetic seal between this fabrication hole and the described push rod front end termination.
By above-mentioned testboard bay, the relative position of adjusting two slide units is fixed on the testboard bay the camshaft level of different model size, utilizing two push rods to be resisted against on the fabrication hole at camshaft two makes the camshaft two ends be in good sealing state, air intake opening on the push rod front end side wall is connected with source of the gas, immerse stand and camshaft in the kerosene fully simultaneously, the pressure of lubricating oil pump size is adjusted the charge pressure size during according to engine operation, that is to say the oiling process that is similar to the analog machine oil pump, i.e. the machine oil maximum pressure.Not having machine oil in this testing process cam slinger, is air fully.Air is got rid of from the gas outlet of push rod by air flue with certain pressure in gas replenishment process, if the surface of contact of steel ball and oil duct opening can not reach when depressing the state that is in sealing fully with oil pressure equal and opposite in direction gas together, the gas that charges into will enter oil duct, and discharges from original oil outlet.This moment, we just can have tangible bubble by observing in the kerosene, if there is not bubble so just can judge this camshaft oil gallery favorable sealing property after continuing for some time yet, had reached the purpose that detects tightness of oil conduit.
Slide unit and back slide unit are formed by the sleeve that is used to install push rod, sleeve bracing frame and slide unit rail groove before described, the described sleeve that is used to install push rod is put above the sleeve bracing frame, the below of described sleeve bracing frame is provided with slide unit rail groove, this slide unit rail groove xsect is " ㄇ " shape, is provided with the slide unit track of " youngster " font in described slide unit rail groove; Described pedestal is provided with dovetail groove, and described slide unit rail groove covers on outside the described dovetail groove and described slide unit track is inserted in the slide unit track base.
Described sleeve rear sleeve is equipped with spring, and described push rod rear end and spring connect.
Described slide unit track arranged outside has the handle bolt.After being used to adjust two slide unit relative positions two slide units are fixed.
Beneficial effect: the present invention is skillfully constructed, and is easy to operate, and the energy Validity Test goes out the sealing of oil conduit of engine camshaft.
Description of drawings
Fig. 1 is the structural representation of testboard bay of the present invention;
Fig. 2 is the structural representation of detected state when comprising camshaft;
Fig. 3 is the structural representation of camshaft;
Fig. 4 is an I place structure enlarged drawing among Fig. 2;
Fig. 5 is the structural representation of slide unit;
Fig. 6 is the structural representation of pedestal slide unit guide-track groove.
Embodiment
The invention will be further described below in conjunction with drawings and Examples:
Embodiment, as Fig. 1,2,4,5,1. 1 kinds of test bench for tightness of oil conduit of engine camshaft shown in 6, comprise pedestal 1, preceding slide unit 2 and back slide unit 3, wherein preceding slide unit 2 and back slide unit 3 can horizontal slips on described pedestal 1, push rod 4 before before described, being set with in the slide unit 2, in the slide unit 3 of back, be set with back push rod 5, push rod 4 is on the same horizontal linear with the axial line of back push rod 5 before described, push rod 4 is provided with air flue 6 with the front end of back push rod 5 one of them push rod before described, the air intake opening of this air flue 6 is arranged on the push rod front end side wall, the gas outlet is arranged on the end face of push rod front end termination, the tapering termination that fabrication hole 13 shapes of described push rod front end termination profile and camshaft oil gallery opening part to be measured are complementary, form step surface at push rod front end near described tapering termination, be set with seal gas ring 12 on this step surface, so that when detecting, form hermetic seal between this fabrication hole 13 and the described push rod front end termination.
Use the testing procedure of present gantries:
1, the relative position of adjusting stand two slide units utilize push rod against being fixed on camshaft to be measured on the stand and locking slide unit.Gas will guarantee that wherein push rod contacts closely with the fabrication hole of camshaft, utilize O-ring seal or sealing joint strip enhanced leaktightness simultaneously, so that can not revealed from the sealing surface of push rod and camshaft in gas replenishment process.
2, the air intake opening on the push rod front end side wall is connected with pneumatic supply, and will places in the oil sump of stand, inject kerosene or be equal to antirust liquid until stand and camshaft are flooded fully.
3, open an end air pressure valve, gaseous tension is adjusted in the specialized range, observe the situation in coal pond by pressure regulator valve.If there is bubble to emerge, then the impermeability between oil duct termination steel ball and the oil duct junction is undesirable; Do not emerge if see bubble, illustrate that then sealing is good.Open other end air pressure valve again and repeat aforesaid operations.Whole process is no more than 30 seconds, and is efficient and convenient.
Claims (4)
1. test bench for tightness of oil conduit of engine camshaft, comprise pedestal (1), preceding slide unit (2) and back slide unit (3), wherein preceding slide unit (2) and back slide unit (3) can be gone up horizontal slip at described pedestal (1), be set with preceding push rod (4) in the slide unit before described (2), in back slide unit (3), be set with back push rod (5), push rod (4) is on the same horizontal linear with the axial line of back push rod (5) before described, it is characterized in that: push rod (4) is provided with air flue (6) with the front end of back one of them push rod of push rod (5) before described, the air intake opening of this air flue (6) is arranged on the push rod front end side wall, the gas outlet is arranged on the end face of push rod front end termination, the tapering termination that fabrication hole (13) shape of described push rod front end termination profile and camshaft oil gallery opening part to be measured is complementary, form step surface at push rod front end near described tapering termination, be set with seal gas ring (12) on this step surface, so that when detecting, form hermetic seal between this fabrication hole (13) and the described push rod front end termination.
2. a kind of test bench for tightness of oil conduit of engine camshaft according to claim 1, it is characterized in that: slide unit (2) and back slide unit (3) are formed by the sleeve that is used to install push rod (7), sleeve bracing frame (8) and slide unit rail groove (9) before described, the described sleeve (7) that is used to install push rod is arranged on the top of sleeve bracing frame (8), the below of described sleeve bracing frame (8) is provided with slide unit rail groove (9), this slide unit rail groove (9) xsect is " ㄇ " shape, is provided with the slide unit track (17) of " youngster " font in described slide unit rail groove (9); Described pedestal (1) is provided with dovetail groove (10), and described slide unit rail groove (9) covers on outside the described dovetail groove (10) and described slide unit track (17) is inserted in the slide unit track base (10).
3. a kind of test bench for tightness of oil conduit of engine camshaft according to claim 2 is characterized in that: described sleeve (7) rear sleeve is equipped with spring (11), and described push rod rear end and spring (11) connect.
4. a kind of test bench for tightness of oil conduit of engine camshaft according to claim 2 is characterized in that: described slide unit track (9) arranged outside has handle bolt (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102076057A CN101750191B (en) | 2008-11-28 | 2009-10-17 | Test bench for tightness of oil conduit of engine camshaft |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810233151.6 | 2008-11-28 | ||
| CN200810233151 | 2008-11-28 | ||
| CN2009102076057A CN101750191B (en) | 2008-11-28 | 2009-10-17 | Test bench for tightness of oil conduit of engine camshaft |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101750191A true CN101750191A (en) | 2010-06-23 |
| CN101750191B CN101750191B (en) | 2011-08-31 |
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ID=42477493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102076057A Expired - Fee Related CN101750191B (en) | 2008-11-28 | 2009-10-17 | Test bench for tightness of oil conduit of engine camshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101750191B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109483447A (en) * | 2018-12-13 | 2019-03-19 | 贵州永红航空机械有限责任公司 | The explosion-proof airtight fixture of condenser |
| CN111272353A (en) * | 2020-02-18 | 2020-06-12 | 中国科学院工程热物理研究所 | Experimental system and method for closed type rotating machinery gas sealing element |
-
2009
- 2009-10-17 CN CN2009102076057A patent/CN101750191B/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109483447A (en) * | 2018-12-13 | 2019-03-19 | 贵州永红航空机械有限责任公司 | The explosion-proof airtight fixture of condenser |
| CN111272353A (en) * | 2020-02-18 | 2020-06-12 | 中国科学院工程热物理研究所 | Experimental system and method for closed type rotating machinery gas sealing element |
| CN111272353B (en) * | 2020-02-18 | 2021-09-07 | 中国科学院工程热物理研究所 | Experimental system and method for closed type rotating machinery gas sealing element |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101750191B (en) | 2011-08-31 |
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Granted publication date: 20110831 Termination date: 20161017 |
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| CF01 | Termination of patent right due to non-payment of annual fee |