CN208669367U - Camshaft-bearing cap thrust structure - Google Patents
Camshaft-bearing cap thrust structure Download PDFInfo
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- CN208669367U CN208669367U CN201821460447.7U CN201821460447U CN208669367U CN 208669367 U CN208669367 U CN 208669367U CN 201821460447 U CN201821460447 U CN 201821460447U CN 208669367 U CN208669367 U CN 208669367U
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- camshaft
- bearing cap
- intake
- side camshaft
- exhaust
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Abstract
The utility model discloses a kind of camshaft-bearing cap thrust structures.The camshaft-bearing cap thrust structure includes: cylinder head, and top is machined with intake-side camshaft and holds seat and exhaust side cams bearing seat；Camshaft, comprising: intake-side camshaft and exhaust side camshaft；The inner end of the intake-side camshaft and exhaust side camshaft offers thrust baffle ring slot, and the inner end of the intake-side camshaft and exhaust side camshaft is held in seat and exhaust side cams bearing seat by the intake-side camshaft that respective thrust baffle ring slot is laid in cylinder head top side by side respectively；And camshaft-bearing cap, it is integral type camshaft-bearing cap, with intake-side camshaft bearing cap and exhaust side camshaft bearing cap, the two holds seat with the intake-side camshaft of cylinder head respectively and the cooperation of exhaust side cams bearing seat is fastened into gas side camshaft and exhaust side camshaft.The camshaft-bearing cap thrust structure has the function of dual thrust, and structurally reasonable, manufacturing cost is low, easy to spread.
Description
Technical field
The utility model is about engine art, especially with regard to a kind of camshaft-bearing cap thrust structure.
Background technique
During engine is designed and developed, camshaft is generally divided into middle and overhead type.According to overhead camshaft, generally
Camshaft-bearing cap can be used and cylinder head cooperates tightening cam axis.General camshaft-bearing cap does not have thrust function, thrust
Function is typically designed on cylinder cap, causes cylinder cover structure complicated, is not easy to casting processing.
The information disclosed in the background technology section is intended only to increase the understanding to the general background of the utility model, and
It is not construed as recognizing or implying in any form that information composition is already known to those of ordinary skill in the art existing
Technology.
Utility model content
The purpose of this utility model is to provide a kind of simple and reasonable camshaft-bearing cap thrust structure, the cams
Axle bearing lid thrust structure has dual thrust on the basis of being fastened into the integral cam axle bearing lid of exhaust side camshaft
Function, structurally reasonable, manufacturing cost is low, easy to spread.
To achieve the above object, the utility model provides a kind of camshaft-bearing cap thrust structure, comprising: cylinder head,
Its top is machined with intake-side camshaft and holds seat and exhaust side cams bearing seat；Camshaft, comprising: intake-side camshaft and exhaust
Side camshaft；The inner end of the intake-side camshaft and exhaust side camshaft offers thrust baffle ring slot, the air inlet side cam
The air inlet side that the inner end of axis and exhaust side camshaft is laid in cylinder head top by respective thrust baffle ring slot respectively side by side is convex
In wheel bearing seat and exhaust side cams bearing seat, for controlling the unlatching and closed action of valve；And camshaft-bearing cap,
For integral type camshaft-bearing cap, there is intake-side camshaft bearing cap and exhaust side camshaft bearing cap, the two respectively with gas
The intake-side camshaft of cylinder cap holds seat and the cooperation of exhaust side cams bearing seat is fastened into gas side camshaft and exhaust side camshaft.
In a preferred embodiment, cylinder head uses overhead camshaft form.
In a preferred embodiment, camshaft-bearing cap further include: connection intake-side camshaft bearing cap and exhaust
The connector of side camshaft-bearing cap.
In a preferred embodiment, intake-side camshaft bearing cap offers intake-side camshaft slot, and air inlet side is convex
The two sides of wheel axial trough offer admission cam shaft screw hole, the intake-side camshaft slot and cylinder of the intake-side camshaft bearing cap
The Cam bearing pedestal of lid cooperates, and passes through admission cam shaft screw hole by the first bolt and be fastened into gas side camshaft；The exhaust
Side camshaft-bearing cap offers exhaust side cams axial trough, and the two sides of the exhaust side cams axial trough offer exhaust cam shaft spiral shell
Hole, the exhaust side cams axial trough of exhaust side camshaft bearing cap and the Cam bearing pedestal of cylinder head cooperate, and pass through the second bolt
Exhaust side camshaft is fastened across exhaust cam shaft screw hole.
In a preferred embodiment, the width of intake-side camshaft and the respective thrust baffle ring slot of exhaust side camshaft
Respectively with the equivalent width of intake-side camshaft bearing cap, exhaust side camshaft bearing cap.
Compared with prior art, camshaft-bearing cap thrust structure according to the present utility model has the following beneficial effects:
The camshaft-bearing cap thrust structure has double on the basis of being fastened into the integral cam axle bearing lid of exhaust side camshaft
Thrust function again, structurally reasonable, manufacturing cost is low, easy to spread.
Detailed description of the invention
Fig. 1 is the schematic perspective view according to the camshaft-bearing cap thrust structure of one embodiment of the utility model.
Fig. 2 is the overlooking structure diagram according to the camshaft-bearing cap thrust structure of one embodiment of the utility model.
Fig. 3 is the schematic cross-sectional view according to the camshaft-bearing cap thrust structure of one embodiment of the utility model.
Fig. 4 is three-dimensional according to the camshaft-bearing cap of the camshaft-bearing cap thrust structure of one embodiment of the utility model
Structural schematic diagram.
Fig. 5 is the camshaft-bearing cap main view according to the camshaft-bearing cap thrust structure of one embodiment of the utility model
Structural schematic diagram.
Fig. 6 is overlooked according to the camshaft-bearing cap of the camshaft-bearing cap thrust structure of one embodiment of the utility model
Structural schematic diagram.
Specific embodiment
With reference to the accompanying drawing, specific embodiment of the present utility model is described in detail, it is to be understood that this is practical
Novel protection scope is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
As shown in Figure 1 to Figure 3, according to the specific of the camshaft-bearing cap thrust structure of the preferred embodiments of the present invention
Structure includes: cylinder head 1, intake-side camshaft 2, exhaust side camshaft 3 and camshaft-bearing cap 4.Wherein, intake-side camshaft
2, exhaust side camshaft 3 is laid in 1 top of cylinder head, using overhead camshaft form, camshaft-bearing cap 4 and cylinder head 1
Cooperation is fastened into gas side camshaft 2 and exhaust side camshaft 3.The camshaft-bearing cap thrust structure is to be fastened into exhaust side convex
Has the function of dual thrust on the basis of the integral cam axle bearing lid of wheel shaft, structurally reasonable, manufacturing cost is low, is easy to push away
Extensively.
Specifically, the effect of cylinder head 1 is sealing cylinder, combustion space is collectively formed with piston, and bear high temperature height
The effect of compression ignition gas.Cylinder head bears mechanical load caused by gas force and fastening bolt cylinder, while due also to and high temperature
Contacts fuel gas and bear very high thermic load.In order to guarantee the excellent sealing of cylinder, cylinder head can neither be damaged, and can not be become
Shape.For this purpose, cylinder head should have enough strength and stiffness.Cylinder head is generally all cast by high-quality gray cast iron or alloy cast iron,
The gasoline engine of car then mostly uses aluminium alloy cylinder lid.Aluminium alloy thermal conductivity is good, is conducive to the compression ratio for improving engine.Its
Secondary, casting character is excellent, the part suitable for cast structure complexity.But the cooling that must be noted that aluminium alloy cylinder lid controls its bottom
The temperature of plane is at 300 DEG C or less.Otherwise, baseplane overheat will be generated and will be plastically deformed and warpage.Cylinder head is complicated
Box-shaped part.It is machined with Valve seat hole, valve guide hole, spark plug mounting hole (gasoline engine) or fuel injector installation thereon
Hole.A part of water jacket, entering and exhaust channel and combustion chamber or combustion chamber is also cast in cylinder head.The top of cylinder head 1 is machined with
Cam bearing pedestal, for being fastened into gas side camshaft 2 and exhaust side camshaft 3 with the cooperation of camshaft-bearing cap 4.
Camshaft is a component in piston engine.Its effect is to control the unlatching and closed action of valve.It is convex
The revolving speed of wheel shaft is very high, and needs to bear very big torque, therefore want in terms of intensity and support in design to camshaft
Ask very high, material is usually superior alloy steel or steel alloy.Since valve motion rule is related to the power of an engine
And service performance, therefore camshaft design in the design process of engine in occupation of highly important status.Camshaft includes:
Intake-side camshaft 2 and exhaust side camshaft 3.The inner end of intake-side camshaft 2 and exhaust side camshaft 3 offers thrust gear
The inner end of annular groove 5, intake-side camshaft 2 and exhaust side camshaft 3 is laid in gas by respective thrust baffle ring slot 5 respectively side by side
In the Cam bearing pedestal on 1 top of cylinder cap, for controlling the unlatching and closed action of valve.
As shown in Figures 4 to 6, camshaft-bearing cap 4 is integral type camshaft-bearing cap, comprising: intake-side camshaft axis
Hold lid 41, exhaust side camshaft bearing cap 42 and the company for connecting the intake-side camshaft bearing cap, exhaust side camshaft bearing cap
Junctor 43.Intake-side camshaft bearing cap 41 offers intake-side camshaft slot, the two sides of intake-side camshaft slot offer into
Gas camshaft screw hole, the intake-side camshaft slot of intake-side camshaft bearing cap 41 and the Cam bearing pedestal of cylinder head 1 cooperate,
And admission cam shaft screw hole is passed through by the first bolt and is fastened into gas side camshaft.42 row of offering of exhaust side camshaft bearing cap
Gas side cam axial trough, the two sides of exhaust side cams axial trough offer exhaust cam shaft screw hole, exhaust side camshaft bearing cap 42
Exhaust side cams axial trough and the Cam bearing pedestal of cylinder head 1 cooperate, and are fastened by the second bolt across exhaust cam shaft screw hole
Exhaust side camshaft.
Preferably, the width of intake-side camshaft 2 and the respective thrust baffle ring slot 5 of exhaust side camshaft 3 respectively with air inlet
The equivalent width of side camshaft-bearing cap 41, exhaust side camshaft bearing cap 42, thrust gap control by tolerance fit, play
Thrust function, because being the integral structure that bearing cap is intake and exhaust side camshaft, which has dual stop
Push away effect.Cylinder head and intake and exhaust cam axis cooperation section width are less than intake and exhaust side camshaft thrust shelves width, do not have thrust
Function.
To sum up, the camshaft-bearing cap thrust structure is in the integral cam axle bearing lid for being fastened into exhaust side camshaft
On the basis of have the function of dual thrust, structurally reasonable, manufacturing cost is low, easy to spread.
The description of the aforementioned specific exemplary embodiment to the utility model is in order to illustrate and illustration purpose.These
Description is not wishing to for the utility model to be limited to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out
It is many to change and change.The purpose of selecting and describing the exemplary embodiment is that explaining the specific principle of the utility model
And its practical application, so that those skilled in the art can be realized and utilize a variety of different examples of the utility model
Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shapes
Formula is limited.
Claims (5)
1. a kind of camshaft-bearing cap thrust structure characterized by comprising
Cylinder head, top are machined with intake-side camshaft and hold seat and exhaust side cams bearing seat；
Camshaft, comprising: intake-side camshaft and exhaust side camshaft；The intake-side camshaft and exhaust side camshaft it is interior
It holds and offers thrust baffle ring slot, the inner end of the intake-side camshaft and exhaust side camshaft passes through respective thrust baffle ring respectively
The intake-side camshaft that slot is laid in cylinder head top side by side is held in seat and exhaust side cams bearing seat, for controlling opening for valve
It opens and closed action；And
Camshaft-bearing cap is integral type camshaft-bearing cap, has intake-side camshaft bearing cap and exhaust side camshaft
Bearing cap, the two holds seat with the intake-side camshaft of cylinder head respectively and the cooperation of exhaust side cams bearing seat is fastened into gas side cam
Axis and exhaust side camshaft.
2. camshaft-bearing cap thrust structure as described in claim 1, which is characterized in that the cylinder head is convex using overhead type
Wheel shaft form.
3. camshaft-bearing cap thrust structure as described in claim 1, which is characterized in that the camshaft-bearing cap also wraps
It includes: the connector of connection intake-side camshaft bearing cap and exhaust side camshaft bearing cap.
4. camshaft-bearing cap thrust structure as claimed in claim 3, which is characterized in that the intake-side camshaft bearing cap
Intake-side camshaft slot is offered, the two sides of intake-side camshaft slot offer admission cam shaft screw hole, the air inlet side cam
The intake-side camshaft slot of axle bearing lid and the Cam bearing pedestal of cylinder head cooperate, and pass through admission cam shaft by the first bolt
Screw hole is fastened into gas side camshaft；The exhaust side camshaft bearing cap offers exhaust side cams axial trough, and the exhaust side is convex
The two sides of wheel axial trough offer exhaust cam shaft screw hole, the exhaust side cams axial trough of exhaust side camshaft bearing cap and cylinder head
Cam bearing pedestal cooperation, and exhaust cam shaft screw hole is passed through by the second bolt and fastens exhaust side camshaft.
5. camshaft-bearing cap thrust structure as claimed in claim 4, which is characterized in that the intake-side camshaft and exhaust
The width of the respective thrust baffle ring slot of the side camshaft width with intake-side camshaft bearing cap, exhaust side camshaft bearing cap respectively
Degree is consistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821460447.7U CN208669367U (en) | 2018-09-06 | 2018-09-06 | Camshaft-bearing cap thrust structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821460447.7U CN208669367U (en) | 2018-09-06 | 2018-09-06 | Camshaft-bearing cap thrust structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208669367U true CN208669367U (en) | 2019-03-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821460447.7U Active CN208669367U (en) | 2018-09-06 | 2018-09-06 | Camshaft-bearing cap thrust structure |
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| CN (1) | CN208669367U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108952871A (en) * | 2018-09-06 | 2018-12-07 | 广西玉柴机器股份有限公司 | Camshaft-bearing cap thrust structure |
-
2018
- 2018-09-06 CN CN201821460447.7U patent/CN208669367U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108952871A (en) * | 2018-09-06 | 2018-12-07 | 广西玉柴机器股份有限公司 | Camshaft-bearing cap thrust structure |
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