Post-treatment vibration isolation device and engine
By designing a post-processing vibration isolation device using a single-layer vibration isolation pad assembly, the cost of the existing vibration isolation system is solved, and the effect of significantly reducing costs on the basis of ensuring structural reliability is achieved.
Patent Information
- Application Number
- CN202421772375.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-07-25
AI Technical Summary
The existing post-treatment vibration isolation system is expensive. How to reduce costs while ensuring structural reliability?
A post-treatment vibration isolation device is designed, and a single-layer vibration isolation pad assembly is used to replace the traditional double-layer vibration absorption pad. Through the combination of the vibration isolation structure, including the upper gasket, the vibration isolation pad assembly, the lower gasket and threaded fasteners, an effective buffering of the engine cylinder vibration is achieved.
On the basis of meeting the requirements of vibration isolation efficiency engineering, the cost of vibration isolation system is significantly reduced, while ensuring the reliability of the after-treatment structure.
Smart Images
Figure CN223019294U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of aftertreatment, and particularly to an aftertreatment vibration isolation device and an engine. Background Art
[0002] To improve structural compactness, the aftertreatment of some non-road machinery is integrated on the top of the engine. The non-road machinery includes machinery such as agricultural machinery, loaders, and excavators. To ensure the reliability of the aftertreatment structure, existing solutions have designed expensive vibration isolation systems for the aftertreatment. Therefore, how to reduce the cost of the aftertreatment vibration isolation system is an urgent problem to be solved by those skilled in the art. Summary of the Utility Model
[0003] This application discloses an aftertreatment vibration isolation device and an engine, which are used to reduce costs on the basis of ensuring the reliability of the aftertreatment structure.
[0004] To achieve the above object, this application provides the following technical solutions:
[0005] In a first aspect, an embodiment of this application provides an aftertreatment vibration isolation device, including: a first bracket, a second bracket, a fixing member, and a vibration isolation structure;
[0006] The vibration isolation structure includes an upper gasket, a vibration isolation pad assembly, a lower gasket, and a threaded fastener;
[0007] The threaded fastener sequentially penetrates through the upper gasket, the second bracket, the vibration isolation pad assembly, and the lower gasket and fixes the second bracket to the first bracket;
[0008] The fixing member is detachably installed on the second bracket and is used to fix the aftertreatment structure.
[0009] The above aftertreatment vibration isolation device uses the vibration isolation structure to buffer the force between the first bracket and the second bracket. When this aftertreatment vibration isolation device is applied, the first bracket is fixed on the engine block, the second bracket fixes the aftertreatment connection structure through the fixing member, and the second bracket is installed on the first bracket through the vibration isolation structure, which can effectively buffer the vibration generated by the engine block. Moreover, the vibration isolation structure includes an upper gasket, a vibration isolation pad assembly, a lower gasket, and a threaded fastener. When the second bracket and the first bracket are installed, the threaded fastener sequentially penetrates through the upper gasket, the second bracket, the vibration isolation pad assembly, and the lower gasket from top to bottom and is threadedly connected and fixed to the first bracket. The second bracket and the first bracket are provided with a single-layer vibration isolation pad assembly, replacing the expensive double-layer vibration damping pads, and achieving a significant cost reduction on the basis that the vibration isolation efficiency meets the engineering requirements.
[0010] In some embodiments, the vibration isolation pad assembly includes an annular pad and a rubber vibration isolation pad;
[0011] The annular spacer has a through hole for mating with the threaded fastener, and the rubber vibration isolation pad is sleeved outside the annular spacer; and the thickness of the annular spacer is less than or equal to the thickness of the rubber vibration isolation pad.
[0012] One end of the vibration isolation pad assembly facing the upper spacer forms a convex portion, and the convex portion is inserted into the through hole of the second bracket.
[0013] In some embodiments, one side of the rubber vibration isolation pad facing the upper spacer includes a first annular surface, a second annular surface and a side connection surface. The second annular surface surrounds the outside of the first annular surface, and the first annular surface protrudes from the second annular surface; one end of the side connection surface is connected to the first annular surface, and the other end is smoothly connected to the second annular surface.
[0014] In some embodiments, the vibration isolation pad assembly further includes an L-shaped spacer. The L-shaped spacer is fixed on the second annular surface and the side connection surface, and the L-shaped spacer does not protrude from the first annular surface.
[0015] The part of the L-shaped spacer connected to the side connection surface is inserted into the through hole of the second bracket.
[0016] In some embodiments, the bent portion of the L-shaped spacer has an arc transition.
[0017] In some embodiments, the annular spacer, the rubber vibration isolation pad and the L-shaped spacer are connected into an integral structure by vulcanization process.
[0018] In some embodiments, the contact surface between the upper spacer and the second bracket protrudes from the first annular surface.
[0019] In some embodiments, both the upper spacer and the lower spacer are metal parts.
[0020] Or, both the L-shaped spacer and the annular spacer are metal parts.
[0021] In some embodiments, the first bracket is provided with a threaded hole for threaded connection with the threaded fastener.
[0022] In a second aspect, an embodiment of the present application further provides an engine, including an aftertreatment structure and an engine block. The aftertreatment structure is mounted on the engine block through the aftertreatment vibration isolation device according to any one of the first aspect. BRIEF DESCRIPTION OF THE DRAWINGS
[0023] Figure 1 It is a schematic structural diagram of an aftertreatment vibration isolation device provided by an embodiment of the present application;
[0024] Figure 2Schematic diagram of the vibration isolation structure in a post-processing vibration isolation device provided by an embodiment of the present application;
[0025] Reference numerals: 1 - First bracket; 2 - Second bracket; 3 - Fixing member; 4 - Vibration isolation structure; 5 - Post-processing structure; 31 - First strap; 32 - Second strap; 33 - Locking member; 41 - Upper gasket; 42 - Vibration isolation pad assembly; 43 - Lower gasket; 44 - Threaded fastener; 311 - Connecting shaft; 421 - Annular pad; 422 - Rubber vibration isolation pad; 423 - L-shaped gasket; 4221 - First annular surface; 4222 - Second annular surface; 4223 - Side connecting surface. Detailed implementation manners
[0026] Traditional vibration damping mechanisms use double-layer rubber vibration damping pads, which are expensive. For this reason, the embodiments of the present application provide a post-processing vibration isolation device and an engine to reduce costs while ensuring the reliability of the post-processing structure.
[0027] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application. Among them, in the description of the embodiments of the present application, unless otherwise specified, " / " means "or". For example, A / B may mean A or B; "and / or" in the text is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B may mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of the present application, "a plurality of" means two or more than two.
[0028] Hereinafter, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as implying or indicating relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present application, unless otherwise specified, the meaning of "a plurality of" is two or more than two.
[0029] In a first aspect, as Figure 1 and Figure 2 shown, an embodiment of the present application provides a post-processing vibration isolation device, including: a first bracket 1, a second bracket 2, a fixing member 3, and a vibration isolation structure 4;
[0030] The vibration isolation structure 4 includes an upper gasket 41, a vibration isolation pad assembly 42, a lower gasket 43, and a threaded fastener 44;
[0031] The threaded fastener 44 sequentially passes through the upper gasket 41, the second bracket 2, the vibration isolation pad assembly 42 and the lower gasket 43, and fixes the second bracket 2 to the first bracket 1;
[0032] The fixing member 3 is detachably mounted on the second bracket 2 for fixing the aftertreatment structure 5.
[0033] The above-mentioned aftertreatment vibration isolation device uses the vibration isolation structure 4 to buffer the acting force between the first bracket 1 and the second bracket 2. When the aftertreatment vibration isolation device is applied, the first bracket 1 is fixed on the engine block, the second bracket 2 fixes the aftertreatment connection structure through the fixing member 3, and the second bracket 2 is mounted on the first bracket 1 through the vibration isolation structure 4, which can effectively buffer the vibration generated by the engine block. Moreover, the vibration isolation structure 4 includes an upper gasket 41, a vibration isolation pad assembly 42, a lower gasket 43 and a threaded fastener 44. When the second bracket 2 and the first bracket 1 are installed, the threaded fastener 44 sequentially passes through the upper gasket 41, the second bracket 2, the vibration isolation pad assembly 42 and the lower gasket 43 from top to bottom and is threadedly connected and fixed to the first bracket 1. The second bracket 2 and the first bracket 1 are provided with a single-layer vibration isolation pad assembly, replacing the costly double-layer vibration damping pads, and greatly reducing the cost on the basis that the vibration isolation efficiency meets the engineering requirements.
[0034] In a possible implementation manner, as Figure 1 shown, the fixing member 3 includes a first strap 31, a second strap 32 and a locking member 33. The first strap 31 is rotatably connected to one end of the second bracket 2 through a connecting shaft 311, and the second strap 32 is rotatably connected to the other end of the second bracket 2 through another connecting shaft. The buckle of the locking member 33 is arranged at one end of the first strap 31 away from the connecting shaft 311, and the lock ring of the locking member 33 is arranged at one end of the second strap 32 away from its connecting shaft. The buckle and the lock ring are locked to fix the aftertreatment structure 5 passing through between the first strap 31 and the second strap 32.
[0035] As Figure 2 shown, the upper gasket 41 is located on the upper surface of the second bracket 2, the lower gasket 43 is located on the top mounting plane of the first bracket 1, and the vibration isolation pad assembly 42 is located above the lower gasket 43. When the first bracket 1 vibrates towards the second bracket 2 under the action of the engine block, the second bracket 2 presses the vibration isolation pad assembly 42 to achieve the buffering effect.
[0036] In some embodiments, both the upper gasket 41 and the lower gasket 43 are metal parts, which can effectively increase the force-bearing area of the threaded fastener 44 and enhance the reliability of the first bracket 1.
[0037] In some embodiments, the vibration isolation pad assembly 42 includes an annular cushion block 421 and a rubber vibration isolation pad 422;
[0038] The annular spacer 421 has a through hole for mating with the threaded fastener 44, and the rubber vibration isolation pad 422 is sleeved outside the annular spacer 421; and the thickness of the annular spacer 421 is less than or equal to the thickness of the rubber vibration isolation pad 422;
[0039] One end of the vibration isolation pad assembly 42 facing the upper gasket 41 forms a convex portion, and the convex portion is inserted into the through hole of the second bracket 2.
[0040] As Figure 2 shown, the annular spacer 421 supports the rubber vibration isolation pad 422. Exemplarily, the annular spacer 421 is a rigid member such as a metal member, and the thickness of the annular spacer 421 is less than or equal to the thickness of the rubber vibration isolation pad 422, that is, in the axial direction, both ends of the annular spacer 421 do not protrude from the end face of the rubber vibration isolation pad 422. Figure 2 It shows that the thickness of the annular spacer 421 is equal to the thickness of the rubber vibration isolation pad 422, that is, the end face of the annular spacer 421 is flush with the end face of the rubber vibration isolation pad 422. One end of the vibration isolation pad assembly 42 facing the upper gasket 41 forms a convex portion, and the convex portion is inserted into the through hole of the second bracket 2 to realize the positioning of the vibration isolation pad assembly 42 and the second bracket 2 for connection reliability, facilitating the second bracket 2 to provide a more stable support for the post-treatment structure 5.
[0041] In some embodiments, one side of the rubber vibration isolation pad 422 facing the upper gasket 41 includes a first annular surface 4221, a second annular surface 4222, and a side connection surface 4223. The second annular surface 4222 surrounds the outside of the first annular surface 4221, and the first annular surface 4221 protrudes from the second annular surface 4222; one end of the side connection surface 4223 is connected to the first annular surface 4221, and the other end is smoothly connected to the second annular surface 4222.
[0042] As Figure 2 shown, the convex portion of the rubber vibration isolation pad 422 is realized by the first annular surface 4221, the second annular surface 4222, and the side connection surface 4223. The second annular surface 4222 surrounds the outside of the first annular surface 4221, and the first annular surface 4221 protrudes from the second annular surface 4222. The first annular surface 4221 and the second annular surface 4222 are parallel, the side connection surface 4223 is perpendicularly connected to the first annular surface 4221, and there is an arc transition between the side connection surface 4223 and the second annular surface 4222 to avoid stress concentration.
[0043] In some embodiments, the vibration isolation pad assembly 42 further includes an L-shaped gasket 423. The L-shaped gasket 423 is fixed on the second annular surface 4222 and the side connection surface 4223, and the L-shaped gasket 423 does not protrude from the first annular surface 4221;
[0044] The part of the L-shaped gasket 423 connected to the side connection surface 4223 is inserted into the through hole of the second bracket 2.
[0045] It should be noted that the first annular surface 4221 of the rubber vibration isolation pad 422 is located in the through hole of the second bracket 2, and the second annular surface 4222 of the rubber vibration isolation pad 422 is in contact with the second bracket 2. To alleviate the wear between the rubber vibration isolation pad 422 and the second bracket 2, an L-shaped gasket 423 is provided on the rubber vibration isolation pad 422. The L-shaped gasket 423 is a rigid member such as a metal sheet, as Figure 2 shown. The L-shaped gasket 423 covers the side connection surface 4223 of the rubber vibration isolation pad 422 and most of the area of the second annular surface 4222, improving the service life of the rubber vibration isolation pad 422. The L-shaped gasket 423 does not protrude from the first annular surface 4221, that is, the end face of the protruding part formed by the L-shaped gasket 423, the annular cushion block 421 and the rubber vibration isolation pad 422 is a plane.
[0046] In a possible implementation manner, a groove cooperating with the L-shaped gasket 423 is provided on the second annular surface 4222, and the L-shaped gasket 423 is embedded in the groove. The part of the L-shaped gasket 423 connected to the second annular surface 4222 is flush with the second annular surface 4222.
[0047] In some embodiments, the bent part of the L-shaped gasket 423 is in an arc transition to avoid stress concentration.
[0048] In some embodiments, the annular cushion block 421, the rubber vibration isolation pad 422 and the L-shaped gasket 423 are connected into an integral structure by a vulcanization process, with reliable connection and stable support provided.
[0049] In some embodiments, the contact surface of the upper gasket 41 with the second bracket 2 protrudes from the first annular surface 4221. That is to say, as Figure 2 shown, when the threaded fastener 44 is not tightened, there is a gap d between the upper surface of the second bracket 2, that is, the contact surface of the second bracket 2 with the upper gasket 41, and the end face of the protruding part, providing a pre-compression amount for the installation of the vibration isolation structure 4.
[0050] In some embodiments, a threaded hole for threaded connection with the threaded fastener 44 is provided on the first bracket 1. The threaded fastener 44 sequentially passes through the upper gasket 41, the second bracket 2, the vibration isolation pad assembly 42 and the lower gasket 43 and is connected and fixed to the threaded hole on the first bracket 1.
[0051] In some embodiments, a connecting through hole is provided on the first bracket 1. The threaded fastener 44 sequentially passes through the upper gasket 41, the second bracket 2, the vibration isolation pad assembly 42, the lower gasket 43 and the first bracket 1, and is connected and fixed by a nut.
[0052] It should be noted that the post-treatment vibration isolation device provided by the embodiments of the present application has passed vibration test, and its vibration isolation efficiency meets the engineering requirements.
[0053] In a second aspect, an embodiment of the present application further provides an engine, including an aftertreatment structure 5 and an engine block. The aftertreatment structure 5 is mounted on the engine block through any one of the aftertreatment vibration isolation devices in the embodiments of the first aspect.
[0054] In a possible implementation, the first bracket 1 is fixedly arranged on the engine block by bolts, and the second bracket 2 is mounted on the first bracket 1 through a vibration isolation structure 4. The vibration isolation structure 4 can effectively buffer the vibration of the engine block. Moreover, since the vibration isolation structure 4 only uses a single-layer rubber vibration isolation pad, compared with the costly double-layer rubber vibration damping pad, the cost is significantly reduced on the basis that the vibration isolation efficiency meets the engineering requirements.
[0055] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application also intends to include these changes and modifications.
Claims
1. A post-processing vibration isolation device, characterized in that: include: A first bracket, a second bracket, a fixing member and a vibration isolation structure; The vibration isolation structure comprises an upper gasket, a vibration isolation pad assembly, a lower gasket and a threaded fastener; The threaded fastener sequentially penetrates the upper gasket, the second bracket, the vibration isolation pad assembly and the lower gasket and fixes the second bracket to the first bracket; The fixing member is detachably mounted on the second bracket and is used to fix the post-processing structure.
2. The post-processing vibration isolation device according to claim 1, characterized in that: The vibration isolation pad assembly comprises an annular pad and a rubber vibration isolation pad; The annular pad has a through hole matched with the threaded fastener, and the rubber vibration isolation pad is sleeved outside the annular pad; and the thickness of the annular pad is less than or equal to the thickness of the rubber vibration isolation pad; A convex portion is formed on one end of the vibration isolation pad assembly toward the upper gasket, and the convex portion is inserted into the through hole of the second bracket.
3. The post-processing vibration isolation device according to claim 2, characterized in that: The rubber vibration isolation pad includes a first annular surface, a second annular surface and a side connecting surface on the side facing the upper gasket, the second annular surface surrounds the outside of the first annular surface, and the first annular surface protrudes from the second annular surface; one end of the side connecting surface is connected to the first annular surface, and the other end is smoothly connected to the second annular surface.
4. The post-processing vibration isolation device according to claim 3, characterized in that: The vibration isolation pad assembly also includes an L-shaped gasket, which is fixed to the second annular surface and the side connecting surface, and the L-shaped gasket does not protrude from the first annular surface; the part of the L-shaped gasket connected to the side connecting surface is inserted into the through hole of the second bracket.
5. The post-processing vibration isolation device according to claim 4, characterized in that: The bending part of the L-shaped gasket is an arc-shaped transition.
6. The post-processing vibration isolation device according to claim 4, characterized in that: The annular pad, the rubber vibration isolation pad and the L-shaped pad are connected into an integrated structure through a vulcanization process.
7. The post-processing vibration isolation device according to any one of claims 3 to 6, characterized in that: The contact surface between the upper gasket and the second bracket protrudes from the first annular surface.
8. The post-processing vibration isolation device according to claim 4, characterized in that: The upper gasket and the lower gasket are both metal parts; Alternatively, the L-shaped gasket and the annular gasket are both metal parts.
9. The post-processing vibration isolation device according to any one of claims 1 to 6, characterized in that: The first bracket is provided with a threaded hole threadedly connected to the threaded fastener.
10. An engine, characterized in that: The invention comprises a post-processing structure and an engine cylinder block, wherein the post-processing structure is installed on the engine cylinder block through a post-processing vibration isolation device as claimed in any one of claims 1 to 9.