CN205532760U - Engine with pressure -reducing device - Google Patents
Engine with pressure -reducing device Download PDFInfo
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- CN205532760U CN205532760U CN201620294987.7U CN201620294987U CN205532760U CN 205532760 U CN205532760 U CN 205532760U CN 201620294987 U CN201620294987 U CN 201620294987U CN 205532760 U CN205532760 U CN 205532760U
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- camshaft
- water pump
- decompressor
- engine
- mandrel
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Abstract
This is novel about an engine with pressure -reducing device, includes: a cylinder head, a bent axle, a protruding wheel axle assembly, a water pump and a radiator. Wherein, in protruding wheel axle assembly group located the cylinder head, protruding wheel axle assembly included a camshaft, 1 the 1st support bearing, 1 the 2nd support bearing, a centrifugal pressure relief device, a sprocket and a lock solid bolt, centrifugal pressure relief device includes a governor weight piece and a decompression mandrel, and in decompression mandrel group located a centre bore of camshaft, the axial of centre bore had one by the terminal surface side and corresponds the thread portion that combines each other with the lock solid bolt. Water pump group locates the cylinder head, and a water pump mandrel coaxial coupling camshaft of water pump, and the two synchronous revolution, radiator then communicate in the water pump. By this, can reach simultaneously water pump and camshaft coaxial drive, have pressure relief device, avoid efficiency such as support bearing and camshaft maximization.
Description
Technical field
This is novel about a kind of engine having decompressor, the engine of a kind of tool decompressor being applicable to locomotive.
Background technology
In existing internal combustion engine, for solving when bent axle is in cutting the engine and after stopping, running into compression travel when next time starts need to overcome the problem of bigger startup impedance, develops so-called engine pressure-release device.
Existing engine pressure-release device such as TaiWan, China patent publication No.: No. 201540937, it ties up to cylinder head and is provided with two decompressors, including an one-way fashion decompressor and a centrifugal decompressor.Wherein, centrifugal decompressor includes a camshaft, a valve actuation cam, a refining wheel, a centrifugal-block, a decompression mandrel, a push rod and a prestressing component.Refining wheel and valve actuation cam are fixedly arranged on camshaft；Centrifugal-block is hubbed on refining wheel, and decompression mandrel is then arranged in camshaft, and push rod sliding is in valve actuation cam, and prestressing component supports centrifugal-block and refining wheel the most respectively.Thereby, when centrifugal force suffered by centrifugal-block is higher than the prestressing of prestressing component, push rod can be accommodated in valve actuation cam completely, and engine will not produce any decompressing effect.Separately, when centrifugal force suffered by centrifugal-block is less than the prestressing of prestressing component, push rod can protrude from outside valve actuation cam, promotes exhaust rocker arm to swing, and then makes drain tap open, and side can produce decompressing effect.
Being positioned at the outside of sprocket wheel by graphic its centrifugal-block system that understands of the disclosure case, and the part-structure of centrifugal-block has covered the outer face, axle portion of camshaft, therefore, its technology can not be implemented on the water-cooled engine with water pump and camshaft Driven by Coaxial.
In addition, in order to reach water pump and camshaft Driven by Coaxial, if changing into being configured between sprocket wheel and spring bearing by the centrifugal-block of centrifugal decompressor, such as TaiWan, China patent: No. I330215, because its pressure release bar needs guiding through bearing, therefore bearing and camshaft can be made to maximize, and owing to pressure release bar occupies the space of camshaft body, cause arranging another one-way fashion decompressor the most again, then suitably this decompressor cannot be arranged at camshaft and between two spring bearings, therefore existing water pump has necessity of redesign with the geometric configuration of each assembly in camshaft.
Utility model content
This most novel main purpose ties up to provide a kind of engine having decompressor, the configuration of its structure can reach water pump and camshaft Driven by Coaxial simultaneously, have decompressor, avoid the effect such as spring bearing and camshaft maximization.
For reaching above-mentioned purpose, the engine of this novel tool decompressor includes: a cylinder head, a bent axle, a camshaft assembly, a water pump and a radiator.Wherein, camshaft assembly is mounted in cylinder head, camshaft assembly includes a camshaft, one first spring bearing, one second spring bearing, a centrifugal decompressor, a sprocket wheel and a lock bolt, and sprocket wheel is interlocked with bent axle by a chain, promotes camshaft and sprocket wheel synchronous rotary；Centrifugal decompressor includes a governor weight block and a decompression mandrel, and decompression mandrel is mounted in a centre bore of camshaft, the spiro tooth part axially by end face side with a combination the most corresponding with lock bolt of centre bore.Water pump is mounted on cylinder head, and a coaxially connected camshaft of water pump mandrel of water pump, and the two synchronous rotary, radiator is then communicated in water pump.
Thereby, the water pump mandrel of water pump, the decompression mandrel of centrifugal decompressor and camshaft are coaxial configuration, that is, water pump mandrel is rotated by camshaft, and decompression mandrel is positioned at the centre bore of camshaft, and the first spring bearing and camshaft can be avoided to maximize.
Above-mentioned camshaft can be provided with a groove, and this decompression mandrel can have the pin that is struck and through this groove and protrude from the outer peripheral face of camshaft, and governor weight block can have a clicking section and be struck with this corresponding gearing of pin, the pin that is struck of decompression mandrel can be located between the first spring bearing and sprocket wheel.Thereby, when governor weight block is made a concerted effort by centrifugal force and returning spring and rotated, decompression central axis can be driven via clicking section with being struck pin.
Above-mentioned governor weight block may be disposed between sprocket wheel and the first spring bearing, may also set up between sprocket wheel and water pump, when governor weight block is arranged between sprocket wheel and water pump, sprocket wheel can have and passes through slotted eye, and slotted eye is then passed through through this in the clicking section of governor weight block.
The end face of above-mentioned lock bolt is provided with a groove, and water pump mandrel has the projection of a combination corresponding with this groove, the two coaxial rotating that can combine.
Above-mentioned camshaft assembly, can also include an one-way fashion decompressor if desired, and this one-way fashion decompressor can be located between the first spring bearing and the second spring bearing.
This governor weight block is arranged between this sprocket wheel and this water pump.
This sprocket wheel has and passes through slotted eye, and slotted eye is passed through through this in this clicking section.
Accompanying drawing explanation
The engine sectional view of this novel first preferred embodiment of Fig. 1 system.
The engine cylinder head sectional view of this novel first preferred embodiment of Fig. 2 system.
The camshaft assembly exploded view of this novel first preferred embodiment of Fig. 3 system.
The camshaft assembly exploded view of the different visual angles of this novel first preferred embodiment of Fig. 4 system.
The camshaft assembly axonometric chart of this novel first preferred embodiment of Fig. 5 system.
The decompressor axonometric chart of this novel first preferred embodiment of Fig. 6 system.
The decompressor sectional view of this novel first preferred embodiment of Fig. 7 system.
The engine sectional view of this novel second preferred embodiment of Fig. 8 system.
The engine cylinder head sectional view of this novel second preferred embodiment of Fig. 9 system.
The camshaft assembly exploded view of this novel second preferred embodiment of Figure 10 system.
The camshaft assembly exploded view of the different visual angles of this novel second preferred embodiment of Figure 11 system.
The camshaft assembly axonometric chart of this novel second preferred embodiment of Figure 12 system.
[symbol description]
1,5 engine 10,50 cylinder heads
11 bent axle 20,60 camshaft assemblies
21 camshaft 211 centre bores
212 spiro tooth part 213 grooves
22 first spring bearing 23 second spring bearings
24,64 sprocket wheel 25 lock bolts
251 groove 252 external screw teeths
26,66 centrifugal decompressor 261,661 governor weight blocks
2612,6612 clicking section 2613,6613 returning springs
265,665 decompression mandrels 2651,6651 are struck pin
27 one-way fashion decompressor 28 rocking arms
281,282 rocker arm shaft 291,292 valve actuation cams
30 water pump 31 water pump mandrels
311 projection 32 chains
35 water pump enclosing cover 36 radiators
38 linings 641 pass through slotted eye
Detailed description of the invention
Understand for the ease of persons skilled in the art and realize this utility model, describing embodiment of the present utility model in conjunction with accompanying drawing.
Refer to Fig. 1 and Fig. 2, its engine sectional view being respectively this novel first preferred embodiment and engine cylinder head sectional view, the engine 1 of the tool decompressor of the present embodiment includes: cylinder head 10, bent axle 11, camshaft assembly 20, water pump 30, chain 32 and a radiator 36.Wherein, camshaft assembly 20 is mounted in this cylinder head 10, and water pump 30 is mounted on cylinder head 10, the camshaft 21 of a coaxially connected camshaft assembly of water pump mandrel 31 20 of water pump 30, the two synchronous rotary, and water pump 30 is also covered with a water pump enclosing cover 35.Separately, radiator 36 is then communicated in this water pump 30, can be to engine 1 cooling heat radiation.
In addition, as shown in the figure, camshaft assembly 20 includes camshaft 21,1 first spring bearing 22,1 second spring bearing 23, centrifugal decompressor 26, one-way fashion decompressor 27, sprocket wheel 24 and a lock bolt 25, sprocket wheel 24 is to be interlocked with bent axle 11 by chain 32, promote this camshaft 21 and this sprocket wheel 24 synchronous rotary, that is, camshaft 21 can be followed bent axle 11 and be interlocked rotation.In the present embodiment, camshaft assembly 20 has double decompressor, one be centrifugal decompressor 26, be one-way fashion decompressor 27, and one-way fashion decompressor 27 is between the first spring bearing 22 and the second spring bearing 23.
Refer to Fig. 3, Fig. 4 and Fig. 5, its exploded view being respectively originally camshaft assembly two different visual angles of novel first preferred embodiment and axonometric chart.In the cylinder head 10 of the present embodiment, group is provided with two rocking arms 28, and such rocking arm 28 is respectively provided with rocker arm shaft 281,282.Two 291,292, valve actuation cams are fixedly arranged on camshaft 21, and the end face of lock bolt 25 is provided with a groove 251, and water pump mandrel 31 has a projection 311 of one and this corresponding combination of groove 251, and water pump mandrel 31 and both lock bolts 25 can combine coaxial rotating.
Refer to Fig. 6 and Fig. 7, its decompressor axonometric chart being respectively this novel first preferred embodiment and sectional view.The centrifugal decompressor 26 of the present embodiment includes governor weight block 261 and a decompression mandrel 265, decompression mandrel 265 is mounted in a centre bore 211 of camshaft 21, the spiro tooth part 212 axially by end face side with a corresponding combination mutual with lock bolt 25 of this centre bore 211, that is, the external screw teeth 252 of lock bolt 25 mutually screws togather with the spiro tooth part 212 of camshaft 21, therebetween and be arranged with a lining 38, thereby, lock bolt 25 and both camshafts 21 can combine coaxial rotating, and then water pump mandrel 31 can be promoted, lock bolt 25 be combined with each other with camshaft 21 three together with coaxial rotating.
The camshaft 21 of the present embodiment is provided with a groove 213, decompression mandrel 265 has one and is struck pin 2651 through this groove 213 and the outer peripheral face that protrudes from camshaft 21, and governor weight block 261 has two clicking sections 2612 and is struck with this corresponding gearing of pin 2651, and governor weight block 261 be provided with a returning spring 2613.In the present embodiment, decompression mandrel 265 be struck pin 2651 and governor weight block 261 is all arranged between the first spring bearing 22 and sprocket wheel 24.
The centrifugal decompressor 26 of the present embodiment and one-way fashion decompressor 27, its action principle is with existing such as TaiWan, China patent publication No.: No. 201540937, TaiWan, China patent: No. I330215 etc. similar, and its difference ties up to the upper change of structure configuration.When the centrifugal decompressor 26 of the present embodiment is to be rotated by centrifugal force and making a concerted effort of returning spring 2613 by governor weight block 261, decompression mandrel 265 can be driven whether to rotate via being struck pin 2651 of the clicking section 2612 of governor weight block 261 and decompression mandrel 265, and then engine 1 is produced decompression or the effect do not reduced pressure.
Thereby, the water pump mandrel 31 of the present embodiment water pump 30, the decompression mandrel 265 of centrifugal decompressor 26 and camshaft 21 are coaxial configuration, that is, water pump mandrel 31 is rotated by camshaft 21, decompression mandrel 265 is positioned at the centre bore 211 of camshaft 21, the first spring bearing 22 and camshaft 21 can be avoided to maximize, one-way fashion decompressor 27 also has suitable space simultaneously, may be disposed on the camshaft assembly 20 of cylinder head 10, and between the first spring bearing 22 and the second spring bearing 23.
Refer to Fig. 8 and Fig. 9, its engine sectional view being respectively this novel second preferred embodiment and engine cylinder head sectional view, the engine 5 of the tool decompressor of the present embodiment includes: cylinder head 50, bent axle 11, camshaft assembly 60, water pump 30, chain 32 and a radiator 36.
Referring again to Figure 10, Figure 11 and Figure 12, its exploded view being respectively originally camshaft assembly two different visual angles of novel second preferred embodiment and axonometric chart.Camshaft assembly 60 includes camshaft 21,1 first spring bearing 22,1 second spring bearing 23, centrifugal decompressor 66, one-way fashion decompressor 27, sprocket wheel 64 and a lock bolt 25.Wherein, centrifugal decompressor 66 includes governor weight block 661 and a decompression mandrel 665, the present embodiment is roughly the same with the structure of first embodiment, its difference is only that the governor weight block 661 of the present embodiment is arranged between sprocket wheel 64 and water pump 30, and the governor weight block 261 of first embodiment is to be arranged between sprocket wheel 24 and the first spring bearing 22.
The governor weight block 661 of the present embodiment is because being to be arranged between sprocket wheel 64 and water pump 30, so sprocket wheel 64 has passes through slotted eye 641, slotted eye 641 is then passed through through this in two clicking sections 6612 of governor weight block 661, and same, governor weight block 261 is also equipped with a returning spring 6613.When the centrifugal decompressor 66 of the present embodiment is to be rotated by centrifugal force and making a concerted effort of returning spring 6613 by governor weight block 661, decompression mandrel 665 can be driven whether to rotate via being struck pin 6651 of the clicking section 6612 of governor weight block 661 and decompression mandrel 665, and then engine 5 is produced decompression or the effect do not reduced pressure.
Thereby, the present embodiment is also such as first embodiment, the water pump mandrel 31 of the present embodiment water pump 30, the decompression mandrel 665 of centrifugal decompressor 66 and camshaft 21 are coaxial configuration, that is, water pump mandrel 31 is rotated by camshaft 21, decompression mandrel 665 is positioned at the centre bore 211 of camshaft 21, the first spring bearing 22 and camshaft 21 can be avoided to maximize, one-way fashion decompressor 27 also has suitable space simultaneously, may be disposed on the camshaft assembly 60 of cylinder head 50, and between the first spring bearing 22 and the second spring bearing 23.
Above-mentioned two relatively preferred embodiments, though all having centrifugal decompressor and one-way fashion decompressor, but do not limit to this.If above-mentioned two preferred embodiments do not comprise the situation of one-way fashion decompressor, the configuration of its structure similarly can reach water pump and camshaft Driven by Coaxial simultaneously, have decompressor, avoids the effect such as spring bearing and camshaft maximization.
Although depicting this utility model by embodiment, but skilled addressee will appreciate that, in the case of without departing from spirit of the present utility model and essence, so that it may making this utility model have many deformation and change, scope of the present utility model is limited to the appended claims.
Claims (7)
1. the engine having decompressor, it is characterised in that including:
One cylinder head；
One bent axle；
One camshaft assembly, it is mounted in this cylinder head, including a camshaft, one first spring bearing, one second spring bearing, a centrifugal decompressor, a sprocket wheel and a lock bolt, this sprocket wheel is interlocked with this bent axle by a chain, promote this camshaft and this sprocket wheel synchronous rotary, this centrifugal decompressor includes a governor weight block and a decompression mandrel, this decompression mandrel is mounted in a centre bore of this camshaft, the spiro tooth part axially by end face side with a combination the most corresponding with this lock bolt of this centre bore；
One water pump, is mounted on this cylinder head, water pump mandrel this camshaft coaxially connected of this water pump, the two synchronous rotary；And
One radiator, is communicated in this water pump.
2. the engine having decompressor as claimed in claim 1, it is characterized in that, this camshaft is provided with a groove, this decompression mandrel has the pin that is struck and through this groove and protrudes from the outer peripheral face of this camshaft, this governor weight block has a clicking section and is struck with this corresponding gearing of pin, and this is struck pins position between this first spring bearing and this sprocket wheel.
3. the engine having decompressor as claimed in claim 2, it is characterised in that this governor weight block is arranged between this sprocket wheel and this first spring bearing.
4. the engine having decompressor as claimed in claim 1, it is characterised in that the end face of this lock bolt is provided with a groove, and this water pump mandrel has the projection of a combination corresponding with this groove.
5. the engine having decompressor as claimed in claim 1, it is characterised in that this camshaft assembly also includes an one-way fashion decompressor, between this first spring bearing and this second spring bearing.
6. the engine having decompressor as claimed in claim 2, it is characterised in that this governor weight block is arranged between this sprocket wheel and this water pump.
7. the as claimed in claim 6 engine having decompressor, it is characterised in that this sprocket wheel has and passes through slotted eye, and slotted eye is passed through through this in this clicking section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620294987.7U CN205532760U (en) | 2016-04-11 | 2016-04-11 | Engine with pressure -reducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620294987.7U CN205532760U (en) | 2016-04-11 | 2016-04-11 | Engine with pressure -reducing device |
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| Publication Number | Publication Date |
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| CN205532760U true CN205532760U (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620294987.7U Active CN205532760U (en) | 2016-04-11 | 2016-04-11 | Engine with pressure -reducing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135359A (en) * | 2021-11-30 | 2022-03-04 | 江门市大长江集团有限公司 | Engine and pressure reducing cam catch structure |
-
2016
- 2016-04-11 CN CN201620294987.7U patent/CN205532760U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114135359A (en) * | 2021-11-30 | 2022-03-04 | 江门市大长江集团有限公司 | Engine and pressure reducing cam catch structure |
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| GR01 | Patent grant |