CN214533225U - Vibration isolation device and vehicle - Google Patents
Vibration isolation device and vehicle Download PDFInfo
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- CN214533225U CN214533225U CN202120013074.4U CN202120013074U CN214533225U CN 214533225 U CN214533225 U CN 214533225U CN 202120013074 U CN202120013074 U CN 202120013074U CN 214533225 U CN214533225 U CN 214533225U
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- engine
- limiting
- exhaust gas
- gas aftertreatment
- vibration isolation
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Abstract
The utility model belongs to the technical field of vehicle, a vibration isolation device and vehicle is disclosed. This vibration isolation device for the vibration isolation between engine and the exhaust aftertreatment device, the vibration isolation device includes: the vibration isolator is arranged between the engine and the exhaust gas after-treatment device and is used for isolating the transmission of the high-frequency vibration load of the engine to the exhaust gas after-treatment device; the limiting mechanism is used for isolating the transmission of the low-frequency vibration load to the tail gas aftertreatment device and comprises a first limiting part, a second limiting part and a buffering part, the first limiting part is connected to the engine, the second limiting part is connected to the tail gas aftertreatment device, the buffering part is arranged in a gap between the first limiting part and the second limiting part, the gap is at least larger than the thickness of the buffering part, and the buffering part is respectively abutted to the first limiting part and the second limiting part and used for buffering the impact of the low-frequency vibration load. The limiting mechanism of the vibration isolation device is used for limiting the transmission of low-frequency road bumping exciting signals to the tail gas post-processing device.
Description
Technical Field
The utility model relates to a vehicle technical field especially relates to an isolation mounting and vehicle.
Background
Generally, an exhaust gas post-treatment device is fixed to an engine body under the influence of limited space of a complete machine in engineering machinery. In order to avoid the transmission of high-frequency vibration load of the engine to the exhaust gas aftertreatment device, a vibration isolator is generally installed between the exhaust gas aftertreatment device and the engine body.
Because the engine excitation load is mostly a high-frequency excitation signal, the vibration isolator is usually adopted with smaller rigidity in the matching process so as to ensure good vibration isolation effect, and the high-frequency vibration load of the engine is effectively isolated. However, the whole working environment of the engineering machinery is severe, the road surface is bumpy, when the engineering machinery runs, a low-frequency road surface bump excitation signal is transmitted to an engine, a vibration isolator arranged on the tail gas post-processing device can hardly isolate low-frequency impact load from the road surface, so that the tail gas post-processing device is large in shaking displacement and large in collision noise, and cracks are easy to occur in a connecting pipeline and the vibration isolator, so that the reliability and the durability of the tail gas post-processing device are influenced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a vibration isolation device and vehicle can keep apart high frequency load and low frequency load respectively, reduces and assaults and noise, increase of service life.
To achieve the purpose, the utility model adopts the following technical proposal:
a vibration isolation apparatus for vibration isolation between an engine and an exhaust gas aftertreatment device, the vibration isolation apparatus comprising:
a vibration isolator provided between the engine and the exhaust gas aftertreatment device, for isolating transmission of a high-frequency vibration load of the engine to the exhaust gas aftertreatment device;
stop gear, its set up in the engine with between the tail gas aftertreatment device for keep apart the low frequency vibration load of engine to the transmission of tail gas aftertreatment device, stop gear includes first locating part, second locating part and bolster, first locating part connect in the engine, the second locating part connect in tail gas aftertreatment device, the bolster set up in first locating part with clearance between the second locating part, the clearance is greater than at least the thickness of bolster, the bolster respectively the butt in first locating part with the second locating part for the impact of buffering low frequency vibration load.
Preferably, the first limiting part comprises a first body and a first boss, the first body is connected to the engine, the first boss is convexly arranged on the first body in a direction close to the second limiting part, and the buffer part is sleeved outside the first boss and abuts against the first body.
Preferably, the first body is provided with a first mounting hole, the engine is provided with a second mounting hole, and the mounting member is respectively inserted into the first mounting hole and the second mounting hole.
Preferably, the first mounting hole is of an oblong hole structure, and the first mounting hole extends in a radial direction of the first body.
Preferably, the second limiting part comprises a second body and a second boss, the second body is connected to the exhaust gas post-treatment device, the second boss is convexly arranged on the second body in the direction close to the first limiting part, a limiting hole is formed in the second boss along the axial direction of the second boss, and the buffer part is arranged in the limiting hole in a penetrating manner.
Preferably, the second body is provided with a first fixing hole, the exhaust gas aftertreatment device is provided with a second fixing hole, and the fixing member is respectively arranged in the first fixing hole and the second fixing hole in a penetrating manner.
Preferably, the buffering member includes a first buffering portion and a second buffering portion, the second buffering portion is disposed in the first buffering portion in a protruding manner in a direction approaching the second limiting member, two sides of the first buffering portion can be respectively abutted to the end surfaces of the first body and the second boss, an inner wall of the second buffering portion can be abutted to the first boss, and an outer wall of the second buffering portion can be abutted to the inner wall of the limiting hole and the second body.
Preferably, the first boss is provided with a first lightening hole along the axial direction.
Preferably, the buffer member is made of a rubber material.
In order to achieve the above object, the utility model also provides a vehicle, including engine, tail gas aftertreatment device and foretell vibration isolation device, vibration isolation device set up in the engine with between the tail gas aftertreatment device.
The utility model has the advantages that:
the utility model provides a vibration isolation device, isolator are used for keeping apart high frequency vibration load, reduce the transmission of engine high frequency vibration load to tail gas aftertreatment device, and stop gear is used for keeping apart low frequency vibration load to the road surface of restriction low frequency is jolted and is encouraged signal transmission to tail gas aftertreatment device. Through mutually supporting of isolator and stop gear, increase the isolation scope of vibration load, reduce tail gas aftertreatment device's the displacement volume that rocks, improve tail gas aftertreatment device's reliability and durability, adopt the mode that isolator and stop gear used together, change for a short time, with low costs.
Through being provided with the bolster between first locating part and second locating part, the bolster can take place deformation after receiving the extrusion, and the low frequency impact load can be cushioned to the bolster, and the both sides of bolster can butt respectively in first locating part and second locating part to reduce the impact between first locating part and the second locating part, make both contacts of first locating part and second locating part softer, thereby reduce impact noise. When the low-frequency impact load of a bumpy road surface is transmitted to the engine, the bump road surface is connected to the engine through the first limiting part, the second limiting part is connected to the tail gas post-treatment device, so that the transmission of the low-frequency impact load of the engine to the tail gas post-treatment device is reduced, and the isolation effect of the low-frequency impact load is good.
The utility model also provides a vehicle, vibration isolation device sets up between engine and tail gas aftertreatment device, avoids tail gas aftertreatment device to receive the influence of low frequency load and high frequency load, avoids connecting line crackle, increase of service life.
Drawings
Fig. 1 is a schematic structural view of the vibration isolation device of the present invention;
fig. 2 is a schematic structural view of a limiting mechanism in the vibration isolation device of the present invention;
fig. 3 is a schematic structural view of a first limiting member in the vibration isolating device according to the present invention;
fig. 4 is a schematic structural view of a second limiting member in the vibration isolating device according to the present invention;
fig. 5 is a schematic structural view of the buffer member in the vibration isolating device according to the present invention.
In the figure:
100. an engine; 200. an exhaust gas post-treatment device;
1. a vibration isolator; 2. a limiting mechanism;
21. a first limit piece; 22. a second limiting member; 23. a buffer member; 24. a mounting member; 25. a fixing member;
211. a first body; 2111. a first mounting hole; 212. a first boss; 2121. a first lightening hole;
221. a second body; 2211. a first fixing hole; 222. a second boss; 2221. a limiting hole;
231. a first buffer section; 232. a second buffer portion.
Detailed Description
In order to make the technical problems, technical solutions and technical effects achieved by the present invention more clear, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
In order to avoid the influence of the vibration load on the exhaust gas aftertreatment device 200, in the prior art, a vibration isolator is installed between the exhaust gas aftertreatment device 200 and the engine 100 body, and the vibration isolator has low rigidity and is used for effectively isolating the high-frequency vibration load of the engine 100, but under a bumpy road condition, a low-frequency excitation signal generated by road bumping is transmitted to the engine 100, and the vibration isolator is difficult to isolate the low-frequency vibration load.
In order to solve this problem, as shown in fig. 1, the present embodiment provides a vibration isolation device for isolating vibration between an engine 100 and an exhaust gas aftertreatment device 200, wherein the vibration isolation device includes a vibration isolator 1 and a limiting mechanism 2, and the vibration isolator 1 is disposed between the engine 100 and the exhaust gas aftertreatment device 200 and is used for isolating transmission of high-frequency vibration load of the engine 100 to the exhaust gas aftertreatment device 200. The stopper mechanism 2 is provided between the engine 100 and the exhaust gas aftertreatment device 200, and is configured to isolate transmission of a low-frequency vibration load of the engine 100 to the exhaust gas aftertreatment device 200.
In the vibration isolator according to the present embodiment, the vibration isolator 1 is used for isolating a high-frequency vibration load and reducing transmission of the high-frequency vibration load of the engine 100 to the exhaust gas aftertreatment device 200, and the limiting mechanism 2 is used for isolating a low-frequency vibration load and limiting transmission of a low-frequency road surface bump excitation signal to the exhaust gas aftertreatment device 200. Through mutually supporting of isolator 1 and stop gear 2, increase the isolation scope of vibration load, reduce tail gas aftertreatment device 200's the displacement volume that rocks, improve tail gas aftertreatment device 200's reliability and durability, adopt the mode that isolator 1 and stop gear 2 both make up the use, change for a short time, with low costs.
The vibration isolator 1 may be a rubber vibration isolator, an air cushion vibration isolator, a spring vibration isolator, or the like, and the vibration isolator 1 is an elastic element disposed between the engine 100 and the exhaust gas aftertreatment device 200 to reduce or eliminate the vibration force transmitted from the engine 100 to the exhaust gas aftertreatment device 200. The number of the vibration isolators 1 is preferably two, and the two vibration isolators 1 are symmetrically arranged on two sides of the limiting mechanism 2 to ensure the balance of the vibration isolation effect.
After the vibration isolator 1 is briefly described, the stopper mechanism 2 will be described in detail below.
As shown in fig. 2, the limiting mechanism 2 includes a first limiting member 21, a second limiting member 22 and a buffering member 23, the first limiting member 21 is connected to the engine 100, the second limiting member 22 is connected to the exhaust gas aftertreatment device 200, the buffering member 23 is disposed in a gap between the first limiting member 21 and the second limiting member 22, the gap is at least greater than the thickness of the buffering member 23, and the buffering member 23 abuts against the first limiting member 21 and the second limiting member 22 respectively for buffering the impact of the low-frequency vibration load.
Through being provided with bolster 23 between first locating part 21 and second locating part 22, bolster 23 can take place deformation after the extrusion, and bolster 23 can cushion low frequency impact load, and the both sides of bolster 23 can be respectively the butt in first locating part 21 and second locating part 22 to reduce the impact force between first locating part 21 and the second locating part 22, make both contacts softly of first locating part 21 and second locating part 22, thereby reduce the impact noise. When the low-frequency impact load of the bumpy road surface is transmitted to the engine 100, the low-frequency impact load is connected to the engine 100 through the first limiting member 21, the second limiting member 22 is connected to the exhaust gas aftertreatment device 200, so that the transmission of the low-frequency impact load of the engine 100 to the exhaust gas aftertreatment device 200 is reduced, and the isolation effect of the low-frequency impact load is good.
Further, as shown in fig. 2 and 3, the first limiting member 21 includes a first body 211 and a first boss 212, the first body 211 is a disc-shaped structure, the first body 211 is connected to the engine 100, and the first body 211 is fixedly mounted to the engine 100, so that the first body 211 and the engine 100 form an integral structure, and therefore, a low-frequency impact load on the engine 100 can be transmitted to the first body 211. A first boss 212 is convexly provided on the first body 211 in a direction approaching the second stopper 22, and the low-frequency impact load on the first body 211 can be transmitted to the first boss 212. The first boss 212 is a cylindrical structure, the buffer 23 is sleeved outside the first boss 212 and abuts against the top surface of the first body 211, and the first boss 212 provides an installation space for the buffer 23, so as to fix the buffer 23.
Optionally, a first weight-reducing hole 2121 is formed in the first boss 212 along the axial direction thereof, and the first weight-reducing hole 2121 plays a role in reducing the weight of the first boss 212, so as to meet the requirement of light weight.
In order to mount the first stopper 21 and the engine 100, the first body 211 is provided with a first mounting hole 2111, the engine 100 is provided with a second mounting hole, and the mounting member 24 is inserted into the first mounting hole 2111 and the second mounting hole, respectively. One of the first mounting hole 2111 and the second mounting hole is preferably of a through hole structure, the other mounting hole is of a bolt hole structure, the mounting part 24 is specifically a bolt, a bolt connection mode is adopted, the operation is simple, the use is convenient, the mounting and dismounting of the first limiting part 21 are facilitated, and the assembly and maintenance cost is low.
Optionally, the first mounting hole 2111 is an oblong hole structure, the first mounting hole 2111 extends along the radial direction of the first body 211, the mounting element 24 can penetrate through the first mounting hole 2111 and slide along the inner wall thereof to a preset position, and then the mounting element 24 penetrates through the second mounting hole, in this process, the adjustment of the relative position of the first limiting element 21 and the second limiting element 22 is realized, and the radial gap between the first limiting element 21 and the second limiting element 22 can be conveniently adjusted.
It will be appreciated that when the first limiting member 21 and the second limiting member 22 are installed, there may be not only radial gaps but also axial gaps, and these gaps exist all the time under normal operating conditions, and the limiting mechanism 2 is not in use, and the vibration isolator 1 is in normal operation, so as to isolate the transmission of high-frequency vibration load of the engine 100 to the exhaust gas aftertreatment device 200. If the whole engineering machinery or the whole engineering machinery runs on a bumpy road surface, a low-frequency road surface bump excitation signal is transmitted to the engine 100, the vibration isolator 1 fails to work aiming at low-frequency impact load, the limiting mechanism 2 acts, an axial gap and a radial gap between the first limiting part 21 and the second limiting part 22 are reduced or disappear, and the limiting mechanism 2 plays a limiting role to reduce the shaking displacement of the tail gas aftertreatment device 200, so that the reliability and the durability of the tail gas aftertreatment device 200 and the vibration isolator 1 are improved.
Further, as shown in fig. 2 and 4, the second limiting member 22 includes a second body 221 and a second boss 222, the second body 221 is a disc-shaped structure, the second body 221 is connected to the exhaust gas aftertreatment device 200, and the second body 221 is fixedly mounted to the exhaust gas aftertreatment device 200, so that the second body 221 and the exhaust gas aftertreatment device 200 form an integral structure. The second boss 222 is convexly arranged on the second body 221 in a direction close to the first limiting member 21, the second boss 222 is of a cylindrical structure, a limiting hole 2221 is formed in the second boss 222 along the axial direction of the second boss, the buffering member 23 penetrates through the limiting hole 2221, and the limiting hole 2221 plays a role in limiting the buffering member 23, so that large displacement between the first limiting member 21 and the second limiting member 22 is avoided.
In order to realize the installation between the second limiting member 22 and the exhaust gas aftertreatment device 200, a first fixing hole 2211 is formed in the second body 221, a second fixing hole is formed in the exhaust gas aftertreatment device 200, and the fixing member 25 is respectively inserted into the first fixing hole 2211 and the second fixing hole. One of the first fixing hole 2211 and the second fixing hole is preferably a through hole structure, the other is a bolt hole structure, the fixing part 25 is a bolt, a bolt connection mode is adopted, the operation is simple, the use is convenient, the installation and the disassembly of the second limiting part 22 are convenient, and the assembly and the maintenance cost are low.
Further, as shown in fig. 2 and 5, the buffering member 23 is made of a rubber material, the buffering member 23 is specifically a damping sleeve, and the buffering member 23 has certain elasticity and can generate certain elastic deformation, so as to achieve the purpose of isolating the low-frequency load of the first limiting member 21 and the second limiting member 22.
Specifically, the buffer member 23 includes a first buffer portion 231 and a second buffer portion 232, the first buffer portion 231 is of a disc structure, the second buffer portion 232 is disposed at the first buffer portion 231 in a protruding manner in a direction approaching the second limiting member 22, two sides of the first buffer portion 231 can respectively abut against end surfaces of the first body 211 and the second boss 222, and the first buffer portion 231 plays a role in isolating the first body 211 of the first limiting member 21 from the second boss 222 of the second limiting member 22. The inner wall of the second buffer portion 232 can abut against the outer wall of the first boss 212, the outer wall of the second buffer portion 232 can abut against the inner wall of the limiting hole 2221 and the second body 221, and the second buffer portion 232 plays a role in isolating the first boss 212 from the second boss 222 and isolating the first boss 212 from the second body 221.
The embodiment also provides a vehicle, which comprises an engine 100, an exhaust gas aftertreatment device 200 and the vibration isolation device, wherein the vibration isolation device is arranged between the engine 100 and the exhaust gas aftertreatment device 200, so that the exhaust gas aftertreatment device 200 is prevented from being influenced by low-frequency load and high-frequency load, cracks are prevented from occurring in a connecting pipeline, and the service life is prolonged.
In the description herein, it is to be understood that the terms "upper", "lower", "right", and the like are used in an orientation or positional relationship based on that shown in the drawings for convenience of description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied thereto. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.
Claims (10)
1. A vibration isolation apparatus for vibration isolation between an engine (100) and an exhaust gas aftertreatment device (200), the vibration isolation apparatus comprising:
a vibration isolator (1) provided between the engine (100) and the exhaust gas aftertreatment device (200) and used for isolating the transmission of the high-frequency vibration load of the engine (100) to the exhaust gas aftertreatment device (200);
a limiting mechanism (2) disposed between the engine (100) and the exhaust gas aftertreatment device (200), for isolating the transmission of low-frequency vibration loads of the engine (100) to the exhaust gas aftertreatment device (200), the limiting mechanism (2) comprises a first limiting piece (21), a second limiting piece (22) and a buffer piece (23), the first limiting member (21) is connected to the engine (100), the second limiting member (22) is connected to the exhaust gas aftertreatment device (200), the buffer (23) is arranged in the gap between the first limiting part (21) and the second limiting part (22), the clearance is greater than the thickness of bolster (23) at least, bolster (23) respectively the butt in first locating part (21) and second locating part (22) for cushion the impact of low frequency vibration load.
2. The vibration isolation device according to claim 1, wherein the first stopper (21) includes a first body (211) and a first boss (212), the first body (211) is connected to the engine (100), the first boss (212) is provided on the first body (211) in a protruding manner in a direction approaching the second stopper (22), and the buffer (23) is fitted to the outside of the first boss (212) and abuts against the first body (211).
3. The vibration isolation device according to claim 2, wherein the first body (211) is provided with a first mounting hole (2111), the engine (100) is provided with a second mounting hole, and the mounting member (24) is respectively inserted into the first mounting hole (2111) and the second mounting hole.
4. The vibration isolation device according to claim 3, wherein the first mounting hole (2111) is an oblong hole structure, and the first mounting hole (2111) extends in a radial direction of the first body (211).
5. The vibration isolation device according to claim 2, wherein the second limiting member (22) comprises a second body (221) and a second boss (222), the second body (221) is connected to the exhaust gas aftertreatment device (200), the second boss (222) is convexly disposed on the second body (221) in a direction approaching the first limiting member (21), a limiting hole (2221) is disposed on the second boss (222) along an axial direction thereof, and the buffering member (23) is disposed through the limiting hole (2221).
6. The vibration isolation device according to claim 5, wherein a first fixing hole (2211) is formed in the second body (221), a second fixing hole is formed in the exhaust gas aftertreatment device (200), and a fixing member (25) is inserted into the first fixing hole (2211) and the second fixing hole, respectively.
7. The vibration isolation device according to claim 5, wherein the buffer member (23) includes a first buffer portion (231) and a second buffer portion (232), the second buffer portion (232) is provided to protrude from the first buffer portion (231) in a direction approaching the second stopper (22), both sides of the first buffer portion (231) can be respectively abutted against end surfaces of the first body (211) and the second boss (222), an inner wall of the second buffer portion (232) can be abutted against the first boss (212), and an outer wall of the second buffer portion (232) can be abutted against an inner wall of the stopper hole (2221) and the second body (221).
8. The vibroisolating device according to claim 2, characterized in that, a first lightening hole (2121) is opened on the first boss (212) along the axial direction thereof.
9. The vibroisolating device according to any one of claims 1 to 8, characterized in that, said buffer (23) is made of rubber material.
10. A vehicle comprising an engine (100), an exhaust gas aftertreatment device (200) and a vibration isolation device according to any one of claims 1 to 9, the vibration isolation device being disposed between the engine (100) and the exhaust gas aftertreatment device (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120013074.4U CN214533225U (en) | 2021-01-05 | 2021-01-05 | Vibration isolation device and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120013074.4U CN214533225U (en) | 2021-01-05 | 2021-01-05 | Vibration isolation device and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214533225U true CN214533225U (en) | 2021-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120013074.4U Active CN214533225U (en) | 2021-01-05 | 2021-01-05 | Vibration isolation device and vehicle |
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| Country | Link |
|---|---|
| CN (1) | CN214533225U (en) |
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2021
- 2021-01-05 CN CN202120013074.4U patent/CN214533225U/en active Active
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