CN204003143U - A kind of high rigidity diesel-engine body component - Google Patents
A kind of high rigidity diesel-engine body component Download PDFInfo
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- CN204003143U CN204003143U CN201420435750.7U CN201420435750U CN204003143U CN 204003143 U CN204003143 U CN 204003143U CN 201420435750 U CN201420435750 U CN 201420435750U CN 204003143 U CN204003143 U CN 204003143U
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Abstract
The utility model provides a kind of high rigidity diesel-engine body component, belongs to Diesel Engine Technique Field.It has solved the problems such as existing structure body easily ftractures, rigidity is not enough, yielding, poor reliability.This high rigidity diesel-engine body component, it is characterized in that: body component comprises body 1 and gear chamber cover, the left end face of described body is provided with several bolts hole, bolt hole is connected with body surface stiffening rib or towards identical, not equidistant bolt coordinates gear chamber cover is fixed on body with bolt hole through gear chamber cover.Stressed and the cam shaft strength of four main bearings bolt strained, body component of the utility model cylinder block is transmitted and is arranged as far as possible straight line transmission on body and gear chamber cover, the rigidity of body component is increased, reduce distortion, reduce frictional loss and diesel engine oil consumption, avoid body, gear chamber cover cracking simultaneously, improve whole aircraft reliability, durability, increase complete machine working life.
Description
Technical field
The utility model belongs to Diesel Engine Technique Field, refers in particular to a kind of high rigidity diesel-engine body component.
Background technique
1933 in the world First small-sized single cylinder diesel engine by Japanese Yanmar Co., Ltd, trial-produceed successfully, small diesel engine starts worldwide to be promoted rapidly since then.Now as the single cylinder diesel that is widely used in the supporting semifinished product of the roads such as low-speed cars, microtractor, baby combine, microtilling machine, garden supervisor, spitkit, small engineering machinery, small power generation unit, agricultural machinery and implement, water pump and agriculture row and non-road equipment, by countries in the world, particularly third world countries are used in a large number.China is the swiftest and the most violent country of single cylinder diesel industry development in recent years, single cylinder diesel volume of production and marketing has accounted for 90% of global single cylinder diesel total amount so far, and along with China's economic development sustainable growth, urbanization process further advances, municipal engineering, farm machinery and family etc. increase with power demand, domestic single cylinder diesel purposes and consumption further expand, market demand rapid growth.
The single cylinder diesel of domestic production is through after transition upgrading repeatedly, and product category is increasingly abundant, and model is increasingly complete, supporting perfect gradually, just progressively adapts to the needs of social industrial or agricultural, for the development of Chinese national economy has increased many power.Yet economic fast development, moves the young labour forces in a large amount of rural areas outward, Chinese countryside labour force be take age old man bigger than normal and women as main at present, so the lightweight low-power air-cooling diesel engine of demand complete machine.Domesticly in recent years take 168F petrol engine as basis, designed the tilting 170F diesel engine of aluminum alloy organism, cylinder head, produce market demand is large, but diesel engine exists following point: body fracture, poor reliability; Market repair rate is very high, and product performance are poor; Discharge can not meet the requirement of current standard limit value.This patent inventor has analyzed the problem that current type exists, the stressed of diesel-engine body analyzed, to four main bearings bolt strained, body of cylinder block, how stressed and cam shaft strength uploads at body the row analysis of going forward one by one, by the stiffening rib of reasonable Arrangement body, gear chamber cover; The bolt hole that layout gear chamber end face connects with gear chamber cover, the rigidity that positioning pin hole position makes body component increase, and reduce distortion, avoid the possibility of body, gear chamber cover cracking, raising whole aircraft reliability, durability.
Summary of the invention
The purpose of this utility model is to provide a kind of high rigidity diesel-engine body component, body component by body and two parts of gear chamber cover with locating stud be located by connecting, bolt tightening is integrated, when diesel engine is worked, they complete a part---the function of body, because gas engine part matching requirements are divided into two parts (two parts) by them.The present invention presses into function from body loading angle by body component high rigidity framework design is provided.Body component is by the stiffening rib of placement machine external surface, inner chamber and gear chamber cover inner chamber; The bolt hole that layout body gear chamber end face connects with gear chamber cover, the rigidity that positioning pin hole position makes body component increase, while making diesel engine be subject to reciprocal inertia force, the rotating inertia force of movement parts, the oil pressure active force of Injection Pump and cylinder combustion pressure, after body component is stressed, press straight line transmission, can reduce animal economy distortion, diesel engine frictional loss is reduced, avoid body, gear chamber side cover cracking, increase complete machine working life.
The purpose of this utility model is achieved in that
A kind of high rigidity diesel-engine body component, it is characterized in that: body component comprises body 1 and gear chamber cover, the left end face of described body is provided with several bolts hole, bolt hole is connected with body surface stiffening rib or towards identical, not equidistant bolt coordinates gear chamber cover is fixed on body with bolt hole through gear chamber cover.
In above-mentioned a kind of high rigidity diesel-engine body component, the left end face of described body is provided with two positioning pin holes, and two positioning pin holes are separately positioned on front side and the rear side of body, between the link position of two positioning pin holes and crankshaft hole and camshaft hole.
In above-mentioned a kind of high rigidity diesel-engine body component, on the leading flank of described body, end face and trailing flank, be equipped with two circumferential stiffening ribs one and some axial stiffening ribs two, described stiffening rib one is cross-linked with stiffening rib two-phase, the end face of body be provided with two with end face stiffening rib together towards bolt hole, the bolt hole of the left end face of body is connected with some stiffening ribs two.
In above-mentioned a kind of high rigidity diesel-engine body component, several described bolts hole are circumferentially and unequal-interval is located in the left end face of body, the bolt hole number that is positioned at body front side is greater than the bolt hole number of body rear side, the number 6 of the bolt hole of described body front side is individual, be followed successively by bolt hole one from top to bottom, bolt hole two, bolt hole three, bolt hole four, bolt hole five, bolt hole six, described bolt hole one is connected with stiffening rib two parts of body end face, described bolt hole two, bolt hole three extends axially with cylinder and is connected, described bolt hole four, bolt hole five is located at respectively Injection Pump mounting hole upper of body, lower both sides, described bolt hole six is connected with the camshaft stiffening rib on body right side wall internal surface, the number of the bolt hole of described body rear side is 4, be followed successively by bolt hole seven from top to bottom, bolt hole eight, bolt hole nine, bolt hole ten, described bolt hole seven is connected with the stiffening rib two of body end face, described bolt hole eight is connected with the stiffening rib two of body trailing flank with bolt hole nine, described bolt hole ten is connected with the camshaft radial reinforced rib of relative camshaft hole setting on body right side wall internal surface.
In above-mentioned a kind of high rigidity diesel-engine body component, the right side wall of described body is provided with bearing mounting groove, the right flank of bearing mounting groove is radially provided with some stiffening ribs three, stiffening rib three is connected with part stiffening rib two, stiffening rib three is provided with leg-of-mutton stiffening plate with the connecting end of bearing mounting groove, and the right flank of described bearing mounting groove is connected with cylinder coaxial to five stiffening ribs four that arrange.
In above-mentioned a kind of high rigidity diesel-engine body component, the bottom surface of described body is provided with several radiating fin axially arranging, and the downside of body right side wall offers 4 Cooling Holes.
In above-mentioned a kind of high rigidity diesel-engine body component, some the stiffening ribs five that the internal surface of described body right side wall is provided with on the circular stiffening rib of crankshaft hole, the setting of camshaft hole concentric, internal surface, relative crankshaft hole, camshaft hole radially arrange, described stiffening rib five is connected with stiffening rib two.
During well-known engine running, cylinder pressure, reciprocal inertia force and rotating inertia force will be delivered on body component by connecting rod, crankshaft bearing, when Injection Pump pump is oily simultaneously, oil pressure is in 30MPa left and right (170F diesel engine), and this power can pass to body camshaft hole by cam of injection pump.These power are all born by cylinder head bolt and crankshaft main bearing hole, camshaft hole, easily make the distortion of body component, simultaneously due to these power sizes and changed by the force direction cycle, also can cause that diesel vibration increases load born by engine body and causes fatigue damage.The pattern that the 170F Gear Cavity Cover of Diesel Engine end face bolt hole that changes bavin by vapour in the market and come and positioning pin hole arrangement still adopt former 168F Gasoline Engine Body, bolt hole is circumferentially close to and is equally spaced along gear chamber cover, two positioning pin hole connecting lines are partial to body upper left side, on body, arrange some stiffening ribs, although body is strengthened to some extent, general structure changes little.Yet diesel engine is compared with petrol engine, diesel engine compression ratio is higher, and combustion manner is different, and cylinder combustion pressure of explosion and rate of pressure rise difference are large, and similar petrol engine test shows that cylinder combustion pressure maximum is in 4MPa left and right; And cylinder of diesel engine burning pressure maximum is in 7MPa left and right, during starting, pressure may be higher, working process of diesel engine is rough, reciprocal inertia force and centrifugal force that connecting rod produces are larger, on diesel engine, Injection Pump is installed simultaneously, Injection Pump pump oil pressure reaches about 30MPa, and this power is passed to by cam wheel by plunger on two camshaft bearing holes of body component, therefore stressedly compared with petrol engine, more worsens.The crankcase generation distortion that these masterpieces form for making body Lower Half and gear chamber cover on body component, certainly will cause locating stud and bolt on gear chamber cover end face to be subject to larger power, therefore easily cause bolt looseness, diesel-engine body, gear chamber cover cracking, whole aircraft reliability, durability decline, and shorten working life.For effectively improving diesel engine distribution of force.
The utility model compared to existing technology outstanding and useful technique effect is:
The utility model has designed a kind of 170F diesel-engine body component, the stressed of diesel-engine body component is analyzed, by the stiffening rib of reasonable Arrangement body outer surface, inner chamber and gear chamber cover inner chamber; Arrange bolt hole, positioning pin hole position that body gear chamber end face connects with gear chamber cover, by four main bearings bolt strained, body component of cylinder block, stressed and cam shaft strength is transmitted and is arranged as far as possible straight line transmission on body and gear chamber cover, the rigidity of body component is increased, reduce distortion, reduce frictional loss and diesel engine oil consumption, avoid body, gear chamber cover cracking simultaneously, improve whole aircraft reliability, durability, increase complete machine working life.
Accompanying drawing explanation
Fig. 1 is that structure of the present utility model is total.
Fig. 2 is the left view of body in the utility model.
Fig. 3 is the stereogram of body in the utility model.
Fig. 4 is the right elevation of body in the utility model.
Fig. 5 is the stereogram of body in the utility model.
Embodiment
Below in conjunction with accompanying drawing, with specific embodiment, the utility model is further described, referring to Fig. 1-5:
A kind of high rigidity diesel-engine body component, body component comprises body 1 and gear chamber cover 2, the left end face 3 of described body is provided with several bolts hole 4, bolt hole is connected with body surface stiffening rib 5 or towards identical, not equidistant bolt 6 coordinates gear chamber cover is fixed on body 1 with bolt hole 4 through gear chamber cover 2.
The left end face 3 of described body is provided with 7, two positioning pin holes of two positioning pin holes and is separately positioned between the front side 100 of body and the link position of rear side 110, two positioning pin holes and crankshaft hole 8 and camshaft hole 9.
On the leading flank 10 of described body, end face 11 and trailing flank 12, be equipped with two circumferential stiffening ribs 1 and some axial stiffening ribs 2 14, described stiffening rib one is cross-linked with stiffening rib two-phase, the end face of body be provided with two with end face stiffening rib together towards bolt hole 15, the bolt hole of the left end face of body is connected with some stiffening ribs two.
Several described bolts hole are circumferentially and unequal-interval is located in the left end face of body, the bolt hole number that is positioned at body front side is greater than the bolt hole number of body rear side, the number 6 of the bolt hole of described body front side is individual, be followed successively by bolt hole 1 from top to bottom, bolt hole 2 17, bolt hole 3 18, bolt hole 4 19, bolt hole 5 20, bolt hole 6 21, described bolt hole one is connected with stiffening rib 2 14 parts of body end face, described bolt hole two, bolt hole three extends axially with cylinder 120 and is connected, described bolt hole four, bolt hole five is located at respectively Injection Pump mounting hole 22 upper of body, lower both sides, described bolt hole six is connected with the camshaft stiffening rib 24 on body right side wall 23 internal surfaces, the number of the bolt hole of described body rear side is 4, be followed successively by bolt hole 7 25 from top to bottom, bolt hole 8 26, bolt hole 9 27, bolt hole 10, described bolt hole seven is connected with the stiffening rib two of body end face, described bolt hole eight is connected with the stiffening rib two of body trailing flank with bolt hole nine, described bolt hole ten is connected with the camshaft radial reinforced rib 29 of relative camshaft hole setting on body right side wall internal surface.
The right side wall of described body is provided with bearing mounting groove 30, the right flank of bearing mounting groove is radially provided with some stiffening ribs 3 31, stiffening rib three is connected with part stiffening rib two, stiffening rib three is provided with leg-of-mutton stiffening plate 32 with the connecting end of bearing mounting groove, and the right flank of described bearing mounting groove is connected with cylinder coaxial to five stiffening ribs 4 33 that arrange.
The bottom surface of described body is provided with several radiating fin 34 axially arranging, and the downside of body right side wall offers 4 Cooling Holes 35.
Some the stiffening ribs 5 37 that the internal surface of described body right side wall is provided with on the circular stiffening rib 36 of crankshaft hole 8, camshaft hole 9 concentric settings, internal surface, relative crankshaft hole, camshaft hole radially arrange, described stiffening rib five is connected with stiffening rib two.
Organism bottom is deposited a certain amount of diesel engine lubricating oil, for keeping oil temperature in the reasonable scope, arrange on the outer surface radiating fin 34, radiating fin plays strengthening body bottom surface rigidity effect simultaneously, the boss of diesel engine bolt hole slightly exceeds body bottom surface, guarantees body bottom surface heat sinking function.
Body 1 is connected fit with gear chamber cover 2 both junction planes with not equidistant bolt 6, with 10 bolt tightenings, form crankcase, coaxial for guaranteeing two crankshaft installed holes 8, the camshaft hole 9 of body component, with two locating studs, 7 location, the bolt hole of bolt distributes and sees Fig. 2, bolt hole one is not circumferentially equally spaced to ten along gear chamber, and the quantity of bolt hole is along center line (in Fig. 2, dotted line indicates) the unequal distribution in both sides, it is six that body 1 upper cylinder body one side bolt hole is arranged comparatively intensive, away from cylinder block one side comparatively sparse be four; Six bolt positions of cylinder block one side are such distributions: the position of bolt hole two, three is to crankcase place at two cylinder head bolt Axis Extensions; Half invests bolt hole one on cylinder block one side stiffening rib two, and second half is by shift fork mounting hole junctor external surface stiffening rib; On Injection Pump mounting hole both sides, be arranged symmetrically with bolt hole four, five; Bolt hole six is arranged in the on line of camshaft stiffening rib.The line stretcher place that is arranged in cylinder centerline away from the bolt hole nine of four bolts of cylinder block one side, bolt hole ten is arranged on the line stretcher of camshaft hole and tappet hole line, bolt hole seven, eight junctor external surface stiffening ribs two.Positioning pin hole is distributed in bent axle and camshaft connecting line both sides, and two positioning pin hole connecting lines are placed between bent axle and camshaft connecting line.Bolt two, three position is delivered on crankcase cylinder head bolt power straight-line transmitting, piston is position near top dead center, the location point of the stressed large direction of machining crankshaft bearing borehole is arranged and is tighted a bolt, the stressed maximum position of body component and bolt position are overlapping, reasonable Arrangement by stiffening rib is dispersed on stiffening rib bolt strained, thereby make body and gear chamber cover maximum in the end-acted power of this position bolt tightening, amount of deformation is minimum, realize the integrated design of component, crankcase seals is good, simultaneously for guaranteeing the crankcase rigidity of body component, bolt hole five, eight, nine, ten structure connects two load-carrying surface both sides of crankcase by indent cylindricality, strengthened the rigidity of crankcase, and make the high rigidity of cylinder block one side of crankcase and body form symmetry, these structural designs make the stress deformation of two bearing surfaces minimum.
Said structure is by the stiffening rib of body component inner and outer surface and cylinder block and body crankcase joint layout, the rigid frame structure that active force on body is transmitted by body stiffening rib distribution realizable force, the rotating inertia force producing while making engine running, reciprocal inertia force and oil pump pump oil pressure be carried on reasonable layout on body component, body component increases body rigidity with thinner wall thickness with stiffening rib, body deformation amount is little, reduce being subject to survey cylinder-bore distortion under mechanical force, reduced frictional loss and the diesel engine oil consumption of diesel engine.Also avoided former vapour to change the similar type body of bavin, the problem of gear chamber cover cracking.The diesel engine stable operation that adopts this body component surpasses 1000 hours, stable performance, and whole aircraft reliability, durability are high, have increased complete machine working life.
Above-described embodiment is only preferred embodiment of the present utility model, not limits according to this protection domain of the present utility model, therefore: all equivalences of doing according to structure of the present utility model, shape, principle change, within all should being covered by protection domain of the present utility model.
Claims (7)
1. one kind high rigidity diesel-engine body component, it is characterized in that: body component comprises body (1) and gear chamber cover (2), the left end face of described body (3) is provided with several bolts hole (4), bolt hole is connected with body surface stiffening rib (5) or towards identical, not equidistant bolt (6) coordinates gear chamber cover is fixed on body (1) with bolt hole (4) through gear chamber cover (2).
2. a kind of high rigidity diesel-engine body component according to claim 1, it is characterized in that: the left end face of described body (3) is provided with two positioning pin holes (7), two positioning pin holes are separately positioned on front side (100) and the rear side (110) of body, between the link position of two positioning pin holes and crankshaft hole (8) and camshaft hole (9).
3. a kind of high rigidity diesel-engine body component according to claim 2, it is characterized in that: on the leading flank of described body (10), end face (11) and trailing flank (12), be equipped with two circumferential stiffening ribs one (13) and some axial stiffening ribs two (14), described stiffening rib one is cross-linked with stiffening rib two-phase, the end face of body be provided with two with end face stiffening rib together towards bolt hole (15), the bolt hole of the left end face of body is connected with some stiffening ribs two.
4. a kind of high rigidity diesel-engine body component according to claim 3, it is characterized in that: several described bolts hole are circumferentially and unequal-interval is located in the left end face of body, the bolt hole number that is positioned at body front side is greater than the bolt hole number of body rear side, the number 6 of the bolt hole of described body front side is individual, be followed successively by bolt hole one (16) from top to bottom, bolt hole two (17), bolt hole three (18), bolt hole four (19), bolt hole five (20), bolt hole six (21), described bolt hole one is connected with the stiffening rib of body end face two (14) parts, described bolt hole two, bolt hole three extends axially with cylinder (120) and is connected, described bolt hole four, bolt hole five is located at respectively Injection Pump mounting hole (22) upper of body, lower both sides, described bolt hole six is connected with the camshaft stiffening rib (24) on body right side wall (23) internal surface, the number of the bolt hole of described body rear side is 4, be followed successively by bolt hole seven (25) from top to bottom, bolt hole eight (26), bolt hole nine (27), bolt hole ten (28), described bolt hole seven is connected with the stiffening rib two of body end face, described bolt hole eight is connected with the stiffening rib two of body trailing flank with bolt hole nine, the camshaft radial reinforced rib (29) that described bolt hole ten arranges with relative camshaft hole on body right side wall internal surface is connected.
5. a kind of high rigidity diesel-engine body component according to claim 3, it is characterized in that: the right side wall of described body is provided with bearing mounting groove (30), the right flank of bearing mounting groove is radially provided with some stiffening ribs three (31), stiffening rib three is connected with part stiffening rib two, stiffening rib three is provided with leg-of-mutton stiffening plate (32) with the connecting end of bearing mounting groove, and the right flank of described bearing mounting groove is connected with cylinder coaxial to five stiffening ribs four (33) that arrange.
6. a kind of high rigidity diesel-engine body component according to claim 5, is characterized in that: the bottom surface of described body is provided with several radiating fin (34) axially arranging, and the downside of body right side wall offers 4 Cooling Holes (35).
7. a kind of high rigidity diesel-engine body component according to claim 5, it is characterized in that: the internal surface of described body right side wall is provided with some the stiffening ribs five (37) that on the circular stiffening rib (36) that arranges with crankshaft hole (8), camshaft hole (9) concentric, internal surface, relative crankshaft hole, camshaft hole radially arrange, and described stiffening rib five is connected with stiffening rib two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420435750.7U CN204003143U (en) | 2014-08-04 | 2014-08-04 | A kind of high rigidity diesel-engine body component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420435750.7U CN204003143U (en) | 2014-08-04 | 2014-08-04 | A kind of high rigidity diesel-engine body component |
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| Publication Number | Publication Date |
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| CN204003143U true CN204003143U (en) | 2014-12-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420435750.7U Active CN204003143U (en) | 2014-08-04 | 2014-08-04 | A kind of high rigidity diesel-engine body component |
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| CN (1) | CN204003143U (en) |
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2014
- 2014-08-04 CN CN201420435750.7U patent/CN204003143U/en active Active
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