CN208803914U - Engine cylinder cover, engine cylinder body and the support bracket fastened composite structure of EGT - Google Patents
Engine cylinder cover, engine cylinder body and the support bracket fastened composite structure of EGT Download PDFInfo
- Publication number
- CN208803914U CN208803914U CN201821295215.0U CN201821295215U CN208803914U CN 208803914 U CN208803914 U CN 208803914U CN 201821295215 U CN201821295215 U CN 201821295215U CN 208803914 U CN208803914 U CN 208803914U
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- China
- Prior art keywords
- engine cylinder
- bushing
- egt
- installation
- rack body
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses a kind of engine cylinder covers, engine cylinder body and the support bracket fastened composite structure of EGT, including engine cylinder cover, engine cylinder body and the fixed bracket of EGT, the engine cylinder cover is mounted on the top surface of the engine cylinder body, the fixed bracket of the EGT includes rack body, the upper end of the rack body is equipped with mounting hole, the lower end two sides of the rack body are respectively equipped with a bushing mounting holes, installation bushing is pressed with by interference fit type in the bushing mounting holes, the height H of the installation bushing is greater than the depth D of the bushing mounting holes, the upper end of the rack body is fixedly mounted on the engine cylinder across the mounting hole by upper fixing bolt and covers, the lower end of the rack body passes through the installation bushing by lower fixing bolt and is fixedly mounted on the engine cylinder body.Suitable for engine.
Description
Technical field
The utility model relates to engine art, in particular to the fixed branch of a kind of engine cylinder cover, engine cylinder body and EGT
The composite structure of frame.
Background technique
Currently, EGR (exhaust gas recycling) module is generally installed on the engine by the fixed bracket of EGR, specifically, first will
The support bracket fastened top and bottom EGR, which respectively correspond to be fixed on engine cylinder cover and engine cylinder body, forms engine cylinder
Then EGR module is mounted on the fixed bracket of EGR by lid, engine cylinder body and the support bracket fastened composite structure of EGT again.It is existing
Engine cylinder cover, engine cylinder body and the support bracket fastened composite structure of EGT have the following problems in actual use:
Since the fixed bracket of EGR is assembled on the surface of 2 parts (i.e. engine cylinder cover and engine cylinder body), and
There is machining tolerance and build-up tolerance again in each part, so the support bracket fastened fitting surface of EGR and be assembled between face there are gap,
The presence in the gap can cause the fixed bracket of EGR to generate larger erection stress, to be easy to cause the fixed bracket fracture of EGR.
Utility model content
The purpose of this utility model is to overcome the deficiency of above-mentioned background technique, a kind of engine cylinder cover is provided, is started
Machine cylinder body and the support bracket fastened composite structure of EGT.
In order to achieve the goal above, the fixed branch of a kind of engine cylinder cover provided by the utility model, engine cylinder body and EGT
The composite structure of frame, including the fixed bracket of engine cylinder cover, engine cylinder body and EGT, the engine cylinder cover is mounted on described
On the top surface of engine cylinder body, the fixed bracket of the EGT includes rack body, and the upper end of the rack body is equipped with mounting hole,
The lower end two sides of the rack body are respectively equipped with a bushing mounting holes, pass through interference fit type in the bushing mounting holes
Be pressed with installation bushing, the height H of the installation bushing is greater than the depth D of the bushing mounting holes, the rack body it is upper
End is fixedly mounted on the engine cylinder across the mounting hole by upper fixing bolt and covers, and the lower end of the rack body is logical
Fixing bolt is crossed down to be fixedly mounted on the engine cylinder body across the installation bushing.
A bushing mounting holes are opened up respectively by the lower end two sides in rack body, and are passed through in bushing mounting holes
The fit system that is full of press fitting installation bushing, when assembling in this way, first passes through mounting hole with fixing bolt and consolidates the upper end of rack body
Dingan County is covered mounted in engine cylinder, is then passed through installation bushing with lower fixing bolt and is tightened towards engine cylinder body direction, at this point, by
In the lower end of rack body fitting surface and be assembled between face that there are gaps, so during tightening, with lower fixation
Bolt is constantly to installation bushing pressure, and installation bushing can direction be sent out in bushing mounting holes under the screwing force of lower fixing bolt
Motivation cylinder body direction is mobile, until installation bushing compensates for gap completely, it can be seen that, after assembly, rack body will not be sent out
Change shape, can greatly reduce the support bracket fastened erection stress of EGT in this way, to greatly increase, EGT is support bracket fastened to be made
Use the service life.
In the above scheme, edge is axially arranged with opening on the installation bushing.By being added on installation bushing along axial direction
Opening, is not only able to achieve the easy press fitting of installation bushing in this way, but also can guarantee that the rebound after press fitting because of installation bushing is installed in bushing
Pressure assembling force is kept in hole.
In the above scheme, the magnitude of interference of the installation bushing is 0.008mm~0.093mm.
In the above scheme, the pressure assembling force of the installation bushing is 440N~1960N.
In the above scheme, the installation bushing is made of No. 20 steel.
In the above scheme, the installation base for installing EGR module is additionally provided on the rack body.By in bracket
Installation base is added on ontology so that it is convenient to the installation of EGR module.
Technical solution provided by the utility model has the benefit that
1, a bushing mounting holes are opened up respectively by the lower end two sides in rack body, and pass through in bushing mounting holes
Interference fit type press fitting installation bushing, when assembling in this way, first passes through mounting hole for the upper end of rack body with fixing bolt
It is fixedly mounted on engine cylinder to cover, then passes through installation bushing with lower fixing bolt and tightened towards engine cylinder body direction, at this point,
Due to the lower end of rack body fitting surface and be assembled between face that there are gaps, so during tightening, with lower solid
Determine bolt constantly to installation bushing pressure, installation bushing can under the screwing force of lower fixing bolt in bushing mounting holes direction
Engine cylinder body direction is mobile, until installation bushing compensates for gap completely, it can be seen that, after assembly, rack body will not
It deforms, the support bracket fastened erection stress of EGT can be greatly reduced in this way, so that it is support bracket fastened to greatly increase EGT
Service life；
2, by adding opening along axial direction on installation bushing, it is not only able to achieve the easy press fitting of installation bushing in this way, but also can protect
It demonstrate,proves after press fitting because the rebound of installation bushing keeps pressure assembling force in bushing mounting holes；
3, by adding installation base on rack body so that it is convenient to the installation of EGR module.
Detailed description of the invention
Fig. 1 is the support bracket fastened structural schematic diagram of EGT；
Fig. 2 is the configuration schematic diagram of Fig. 1；
Fig. 3 is the schematic view of the front view of Fig. 1；
Fig. 4 is the schematic diagram of the section structure of Fig. 3；
Structural schematic diagram when Fig. 5 is the present embodiment fit on fixing bolt；
Fig. 6 is structural schematic diagram when the present embodiment assembles lower fixing bolt.
In figure, engine cylinder cover 1, engine cylinder body 2, the fixed bracket 3 of EGT, rack body 3a, mounting hole 3b, bushing peace
Hole 3c is filled, bushing 3d is installed, be open 3e, installation base 3f, upper fixing bolt 4, lower fixing bolt 5.
Specific embodiment
It is practical new to this below in conjunction with attached drawing to keep the purpose of this utility model, technical solution and advantage clearer
Type embodiment is described in further detail.
As shown in Figure 1, a kind of engine cylinder cover provided by the utility model, engine cylinder body and support bracket fastened group of EGT
Structure is closed, including the fixed bracket 3 of engine cylinder cover 1, engine cylinder body 2 and EGT, the engine cylinder cover 1 are mounted on the hair
On the top surface of motivation cylinder body 2, the fixed bracket 3 of the EGT includes rack body 3a, and the upper end of the rack body 3a is equipped with peace
Hole 3b is filled, the lower end two sides of the rack body 3a, which are respectively equipped in bushing mounting holes a 3c, the bushing mounting holes 3c, to be led to
It crosses interference fit type and is pressed with installation bushing 3d, the height H of the installation bushing 3d is greater than the depth of the bushing mounting holes 3c
D is spent, the upper end of the rack body 3a passes through the mounting hole 3b by upper fixing bolt 4 and is fixedly mounted on the engine cylinder
On lid 1, the lower end of the rack body 3a passes through the installation bushing 3d by lower fixing bolt 5 and is fixedly mounted on described start
On machine cylinder body 2.A bushing mounting holes 3c is opened up respectively by the lower end two sides in rack body 3a, and in bushing mounting holes 3c
It is interior that installation bushing 3d is pressed by interference fit type, when assembling in this way, mounting hole 3b first is passed through by bracket with fixing bolt 4
The upper end of ontology 3a is fixedly mounted on engine cylinder cover 1, then passes through installation bushing 3d towards engine cylinder with lower fixing bolt 5
2 direction of body is tightened, at this point, due to the lower end of rack body 3a fitting surface and be assembled between face that there are gaps, so twisting
In tight process, as lower fixing bolt 5 is constantly to installation bushing 3d pressure, installation bushing 3d can be in lower fixing bolt 5
It is mobile towards 2 direction of engine cylinder body in bushing mounting holes 3c under screwing force, until installation bushing 3d compensates for gap completely,
It can be seen that rack body 3a will not deform after assembly, the assembly of the fixed bracket 3 of EGT can be greatly reduced in this way
Stress, to greatly increase the service life of the fixed bracket 3 of EGT.
Edge is axially arranged with opening 3e on above-mentioned installation bushing 3d.By adding opening 3e along axial direction on installation bushing 3d,
It is not only able to achieve the easy press fitting of installation bushing 3d in this way, but also can guarantee after press fitting because the rebound of installation bushing 3d is in bushing mounting holes
Pressure assembling force is kept in 3c.The magnitude of interference of the installation bushing 3d is 0.008mm~0.093mm.The press fitting of the installation bushing 3d
Power is 440N~1960N.The installation bushing 3d is made of No. 20 steel.It is additionally provided on the rack body 3a for installing EGR
The installation base 3f of module.By adding installation base 3f on rack body 3a so that it is convenient to the installation of EGR module.
The assembling process of the present embodiment is as follows:
Firstly, passing through mounting hole 3b with fixing bolt 4 is fixedly mounted on engine cylinder cover 1 for the upper end of rack body 3a
On, fit closely the fitting surface of the upper end of rack body 3a with the face of being assembled；Then, installation lining is passed through with lower fixing bolt 5
Set 3d is tightened towards 2 direction of engine cylinder body, at this point, the fitting surface and being assembled between face due to the lower end of rack body 3a exists
Gap, so during tightening, as lower fixing bolt 5 is constantly to installation bushing 3d pressure, installation bushing 3d can be
It is mobile towards 2 direction of engine cylinder body in bushing mounting holes 3c under the screwing force of lower fixing bolt 5, until installation bushing 3d is complete
It is complete to compensate for gap.
Before the fixed bracket 3 of assembly EGT, the bushing mounting holes 3c that installation bushing 3d is first fitted in rack body 3a is needed
It is interior, specifically, installation bushing 3d should be made concordant with the fitting surface of the lower end of rack body 3a towards one end of engine cylinder body 2,
Make to install bushing 3d backwards to the outer surface of the lower end of one end protruding bracket ontology 3a of engine cylinder body 2 and protrusion part should be greater than
Above-mentioned gap (i.e. the fitting surface of the lower end of rack body 3a and be assembled between face there are gaps).
The present embodiment opens up a bushing mounting holes 3c by the lower end two sides in rack body 3a respectively, and pacifies in bushing
It fills in the 3c of hole and installation bushing 3d is pressed by interference fit type, when assembling in this way, first pass through mounting hole 3b with fixing bolt 4
The upper end of rack body 3a is fixedly mounted on engine cylinder cover 1, then passes through installation bushing 3d towards hair with lower fixing bolt 5
2 direction of motivation cylinder body is tightened, at this point, due to the lower end of rack body 3a fitting surface and be assembled between face that there are gap, institutes
With during tightening, as lower fixing bolt 5 is constantly to installation bushing 3d pressure, installation bushing 3d can be in lower fixation
It is mobile towards 2 direction of engine cylinder body in bushing mounting holes 3c under the screwing force of bolt 5, until installation bushing 3d is compensated for completely
Gap, it can be seen that, after assembly, rack body 3a will not deform, and can greatly reduce the fixed bracket 3 of EGT in this way
Erection stress, to greatly increase the service life of the fixed bracket 3 of EGT.
Meanwhile the present embodiment had both been able to achieve installation bushing by adding opening 3e along axial direction on installation bushing 3d in this way
The easy press fitting of 3d, and can guarantee after press fitting because the rebound of installation bushing 3d keeps pressure assembling force in bushing mounting holes 3c；Pass through
Installation base 3f is added on rack body 3a so that it is convenient to the installation of EGR module.
The above is only the preferred embodiment of the present invention, is not intended to limit the utility model, all practical at this
Within novel spirit and principle, any modification, equivalent replacement, improvement and so on should be included in the guarantor of the utility model
Within the scope of shield.
Claims (6)
1. a kind of engine cylinder cover, engine cylinder body and the support bracket fastened composite structure of EGT, including engine cylinder cover (1), start
Machine cylinder body (2) and EGT are fixed bracket (3), and the engine cylinder cover (1) is mounted on the top surface of the engine cylinder body (2),
It is characterized in that, the EGT fixed bracket (3) includes rack body (3a), and the upper end of the rack body (3a) is equipped with mounting hole
(3b), the lower end two sides of the rack body (3a) are respectively equipped with a bushing mounting holes (3c), the bushing mounting holes (3c)
Interior to be pressed with installation bushing (3d) by interference fit type, the height H of installation bushing (3d) is installed greater than the bushing
The upper end of the depth D in hole (3c), the rack body (3a) pass through the mounting hole (3b) fixed peace by upper fixing bolt (4)
On the engine cylinder cover (1), the lower end of the rack body (3a) is served as a contrast by lower fixing bolt (5) across the installation
Set (3d) is fixedly mounted on the engine cylinder body (2).
2. engine cylinder cover as described in claim 1, engine cylinder body and the support bracket fastened composite structure of EGT, feature exist
In edge is axially arranged with opening (3e) on the installation bushing (3d).
3. engine cylinder cover as described in claim 1, engine cylinder body and the support bracket fastened composite structure of EGT, feature exist
In the magnitude of interference of installation bushing (3d) is 0.008mm~0.093mm.
4. engine cylinder cover as described in claim 1, engine cylinder body and the support bracket fastened composite structure of EGT, feature exist
In the pressure assembling force of installation bushing (3d) is 440N~1960N.
5. engine cylinder cover as described in claim 1, engine cylinder body and the support bracket fastened composite structure of EGT, feature exist
In the installation bushing (3d) is made of No. 20 steel.
6. engine cylinder cover as described in claim 1, engine cylinder body and the support bracket fastened composite structure of EGT, feature exist
In being additionally provided with the installation base (3f) for installing EGR module on the rack body (3a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821295215.0U CN208803914U (en) | 2018-08-10 | 2018-08-10 | Engine cylinder cover, engine cylinder body and the support bracket fastened composite structure of EGT |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821295215.0U CN208803914U (en) | 2018-08-10 | 2018-08-10 | Engine cylinder cover, engine cylinder body and the support bracket fastened composite structure of EGT |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208803914U true CN208803914U (en) | 2019-04-30 |
Family
ID=66231451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821295215.0U Expired - Fee Related CN208803914U (en) | 2018-08-10 | 2018-08-10 | Engine cylinder cover, engine cylinder body and the support bracket fastened composite structure of EGT |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208803914U (en) |
-
2018
- 2018-08-10 CN CN201821295215.0U patent/CN208803914U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190430 Termination date: 20210810 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |