Muffler mounting structure and generator

Abstract

The utility model discloses a kind of muffler mounting structures, including power unit, muffler, support unit, and the rack for providing support to support unit;The power unit is arranged on support unit, and power unit is connected with muffler ventilation;Extension is provided on the support unit, the muffler is installed on extension, and extension is provided with elastic unit between the rack;The distal end away from exhaust unit is provided with mounting lug on the muffler, and the muffler is installed on extension through mounting lug.In addition, the utility model further provides a kind of generator, contains the muffler mounting structure described above.Affordable effect is in at:by optimizing structure layout, and buffering, energy absorption or damping dissipation mechanism, alleviate vibration transmission, structure impact, noise and high temperature pollution, stress concentration to the adverse effects caused by component, to avoid component cracking or damage, effectively improve the service life of muffler.

Description

Technical Field

[0001] This utility model relates to the field of silencer technology, specifically to a silencer mounting structure and a generator. Background Technology

[0002] The muffler is a core component of the power unit's exhaust system. Its primary function is to reduce exhaust noise, while also ensuring smooth exhaust flow and environmental compliance. It is an indispensable component for the normal operation of the engine. However, due to the current mainstream design concepts of miniaturization, integration, and compactness, the connection points between the muffler and other components are often prone to damage.

[0003] For example, CN218971292U discloses a muffler mounting structure for a generator set. The generator set includes an engine, and the muffler is vertically arranged on the exhaust side of the engine. The muffler mounting structure includes a first connecting assembly, a second connecting assembly, multiple connecting bolts, and flexible tubing. The first connecting assembly is fixedly connected to the upper and lower ends of the muffler, and the second connecting assembly is mounted on the engine housing. The multiple connecting bolts are used to connect the first connecting assembly and the second connecting assembly to fix the muffler on the exhaust side of the engine. Preferably, the first connecting assembly includes a first connecting plate and a second connecting plate symmetrically welded to the top plate of the muffler on the side near the engine, and a third connecting plate and a fourth connecting plate symmetrically welded to the bottom plate of the muffler on the side near the engine. The first connecting plate, the second connecting plate, the third connecting plate, and the fourth connecting plate are all provided with connecting holes.

[0004] To achieve a compact and miniaturized design, the above scheme vertically mounts the muffler onto the engine using a first connecting plate, a second connecting plate, a third connecting plate, a fourth connecting plate, and multiple connecting bolts. However, these connections are prone to wear and even breakage, which in turn affects the overall lifespan of the generator set.

[0005] Furthermore, CN218479852U discloses a generator muffler assembly, in which the muffler includes a first connector, a second connector, a protective cover, and a muffler body located within the protective cover. The muffler body is fixedly connected to the protective cover. One end of the first connector is fixedly connected to the protective cover. One end of the second connector is fixedly connected to the engine and bracket via a vertically arranged fastener. The other end of the first connector and the other end of the second connector are connected via a horizontally arranged fastener. During installation, one end of the second connector can be first fixedly connected to the engine and frame via the vertically arranged fastener, then one end of the first connector and the other end of the second connector can be aligned, and then fixedly connected via the horizontally arranged fastener. This allows the muffler to be installed and positioned, improving the convenience of muffler installation.

[0006] This solution uses connector one, connector two, and bolts to install and position the muffler. However, the connections are prone to loosening, fatigue wear, and cracking. In severe cases, the bolts may even break, potentially causing the muffler to shift or even fall off. Utility Model Content

[0007] The purpose of this utility model is to provide a muffler installation structure and generator that can avoid component damage and effectively improve the service life of the muffler.

[0008] To achieve the above objectives, the basic solution of this utility model provides a muffler mounting structure, including a power unit, a muffler, a support unit, and a frame that provides support for the support unit; the power unit is mounted on the support unit and is ventilatedly connected to the muffler; the support unit is provided with an extension, the muffler is mounted on the extension, and an elastic unit is provided between the extension and the frame.

[0009] The beneficial effects of this basic solution are: by optimizing the structural layout and using buffering, energy absorption or damping dissipation mechanisms, it can mitigate the adverse effects of vibration transmission, structural impact, noise and high-temperature pollution, and stress concentration on components, thereby preventing component cracking or damage and effectively improving the service life of the muffler.

[0010] Preferably, the muffler is provided with mounting lugs, and the muffler is mounted on the extension via the mounting lugs. This can better balance the center of gravity of the muffler and avoid stress concentration, prevent component damage, and further extend its service life.

[0011] Preferably, the mounting lug is located at the far end from the vent connection between the power unit and the muffler. This is equivalent to placing the elastic unit as far away from the vent connection between the power unit and the muffler as possible to avoid cracking or damage due to the high temperature and vibration of the muffler.

[0012] Preferably, the elastic unit includes a first elastic element, which is installed between the extension and the frame by fasteners. The first elastic element significantly reduces the vibration acceleration of the extension, thereby protecting components such as the mounting lugs and the extension from damage.

[0013] Preferably, the first elastic element is a bent-arm double-joint rubber buffer support / conical elastic element / cylindrical elastic element.

[0014] Preferably, when the central axis of the first elastic element and the central axis of the fastener do not coincide, the center point of the fastener is used as the origin of the reference coordinate system, and the angle between the central axis of the first elastic element and the horizontal direction is the installation angle, which ranges from -105° to 45°. This skewed design achieves composite load output, optimizes stress distribution, further avoids component fatigue and damage, and extends the service life of the muffler.

[0015] Preferably, the mounting angle is 0°. A mounting angle of 0° is the most preferred embodiment of this solution.

[0016] Preferably, a second elastic element is provided between the support unit and the frame, except for the extension. This adjusts the vibration transmission path to avoid resonance; on the other hand, it buffers the impact peak, preventing rigid impacts from damaging weak parts such as frame welds and bolt connections.

[0017] Preferably, the second elastic element is disposed between the end of the support unit and the frame.

[0018] In addition, this utility model also provides a generator, which includes the muffler mounting structure described above.

[0019] This utility model has the following beneficial effects: 1. By using buffering, energy absorption, or damping dissipation mechanisms, the muffler mitigates the adverse effects of vibration transmission, structural impact, noise and high-temperature pollution, and stress concentration on the muffler and its components, thereby preventing component cracking or damage and effectively extending the service life of the muffler.

[0020] 2. Adjustable vibration transmission path to avoid resonance, stabilize engine mounting posture, reduce vibration, and improve equipment operation stability.

[0021] 3. The ingenious structure and layout arrangement minimizes interference from the muffler and power unit, further preventing component damage and thus extending the service life of the muffler.

[0022] 4. The above-mentioned solution provided by this utility model has undergone random vibration testing for more than 24 hours, and its structure has not shown any cracks or damage. Attached Figure Description

[0023] Figure 1 This is a top view of Embodiment 1 of the present utility model.

[0024] Figure 2 for Figure 1 Rear view.

[0025] Figure 3 This is a schematic diagram of a structure with an installation angle of 0°.

[0026] Figure 4 This is a schematic diagram of a structure with an installation angle of 45°.

[0027] Figure 5 This is a schematic diagram of a structure with an installation angle of -105°.

[0028] Figure 1-5 In the diagram, the dashed line represents the central axis of the component, and the dotted line represents the centerline of the component. Detailed Implementation

[0029] In this utility model, "end" refers to both ends of the support unit.

[0030] The terms "front, back, left, right, up, down" used in this utility model are only for better illustrating the spatial positional relationship between the components of this utility model and do not constitute a limitation in terms of orientation.

[0031] The following detailed description illustrates the specific implementation method: The reference numerals in the accompanying drawings include: 1-power unit, 2-muffler, 3-support unit, 31-extension, 4-frame, 5-exhaust tailpipe, 6-mounting lug, 7-first elastic element, 8-fastener, and 9-second elastic element.

[0032] The muffler mounting structure provided in this embodiment includes a power unit 1, a muffler 2, a support unit 3, and a frame 4 that provides support for the support unit 3; the power unit 1 is mounted on the support unit 3 and is ventilatedly connected to the muffler 2; the support unit 3 is provided with an extension 31, the muffler 2 is mounted on the extension 31, and an elastic unit is provided between the extension 31 and the frame 4.

[0033] Even better, the muffler 1 is provided with a mounting lug 6, and the muffler 2 is mounted on the extension 31 via the mounting lug 6.

[0034] Even better, the mounting bracket 6 is positioned at a distance from the ventilation connection between the power unit 1 and the muffler 2.

[0035] Even better, the elastic unit includes a first elastic element 7, which is mounted between the extension 31 and the frame 4 by fasteners 8.

[0036] Even better, the first elastic element 7 can be a bent-arm double-joint rubber buffer support / conical elastic element / cylindrical elastic element, and one of them can be selected.

[0037] Even better, when the central axis of the first elastic element 7 and the central axis of the fastener 8 do not coincide, the center point of the fastener 8 is taken as the origin of the reference coordinate system, and the angle between the central axis of the first elastic element 7 and the horizontal direction is the installation angle, which ranges from -105° to 45°.

[0038] Even better, the installation angle is 0°.

[0039] Even better, a second elastic element 9 is provided between the support unit 3 and the frame 4, except for the extension 31.

[0040] Even better, the second elastic element 9 is disposed between the end of the support unit 3 and the frame 4.

[0041] In this embodiment, the component that connects the power unit 1 and the muffler 2 for ventilation may include the exhaust tailpipe 5.

[0042] In addition, this embodiment also provides a generator, which includes the muffler mounting structure provided in the above embodiment.

[0043] Example 1 is basically as shown in the appendix. Figure 1-5 As shown: The muffler installation structure provided in this embodiment mainly consists of a power unit 1, a muffler 2, a support unit 3, and a frame 4.

[0044] The support unit 3 is set into two groups, and is arranged separately in front and behind. The power unit 1 spans across the two groups of support units 3 and is installed on the two groups of support units 3 by fasteners.

[0045] Ideally, the two sets of support units 3 are elastically mounted on the frame 4. Preferably, a second elastic element 9 is provided at each of the left and right ends of the support unit 3, for a total of four sets of second elastic elements 9. The support units 3 are mounted on the frame 4 via the second elastic elements 9 to prevent the continuous transmission of vibration. Alternatively, the second elastic elements 9 can be installed between the support unit 3 and the frame 4 using fasteners.

[0046] The upper part of the muffler 2 is ventilated to the power unit 1. In this embodiment, the upper part of the muffler 2 is ventilated to the power unit 1 through the exhaust tailpipe 5. The following description will refer to the exhaust tailpipe 5.

[0047] At the support unit 3 near the muffler 2, an extension 31 extends from its end for mounting the muffler 2; preferably, a mounting lug 6 is provided at the lower part or bottom of the muffler 2, and the mounting lug 6 can be welded or mounted on the muffler 2 by a mounting piece.

[0048] In this embodiment, the muffler 2 is mounted on the extension 31 by mounting lugs 6. Preferably, a side wall perpendicular to the body of the extension 31 can be provided on the extension 31. Both the mounting lugs 6 and the side wall are provided with bolt holes, and the mounting lugs 6 are fixed to the side wall by bolts.

[0049] A first elastic element 7 is also provided between the extension 31 and the frame 4. Under high temperature resistance conditions, the first elastic element 7 is positioned as close as possible to the mounting lug 6 on the extension 31.

[0050] In this embodiment, the first elastic element 7 can be a double-jointed bent-arm rubber buffer support. The double-jointed bent-arm rubber buffer support has two mounting parts, one for connecting to the extension 31 and the other for connecting to the frame 4, both connected by fasteners 8. Taking the center point of one of the fasteners 8 as the origin of the reference coordinate system, the angle between the central axis of the double-jointed bent-arm rubber buffer support and the horizontal direction is the mounting angle, ranging from -105° to 45°. Preferably, the mounting angle is 0°. That is, the central axis of the double-jointed bent-arm rubber buffer support is parallel to the horizontal line. In this embodiment, specific implementations with mounting angles of 0°, 45°, and 105° are provided; see [link to specific implementations]. Figure 3-5 .

[0051] After undergoing more than 24 hours of random vibration testing, the above-mentioned structure showed no cracking or damage to components such as the bent-arm double-joint rubber buffer support, mounting lug 6, extension 31, and fastener 8. In contrast, the traditional muffler mounting structure, which did not use this solution, showed cracking in some components after 1 hour of random vibration.

[0052] In addition, in this embodiment, the first elastic element 7 can also be a conical elastic element or a cylindrical elastic element, which is installed between the extension 31 and the frame 4 by fasteners 8.

[0053] In addition, the first elastic element 7 and the second elastic element 9 can also be components of the same specification and material to reduce design, production and installation costs.

[0054] Example 2 The generator provided in this embodiment includes the installation structure of the muffler as provided in Embodiment 1 above, which can be referred to for details. Figure 1-5 .

[0055] The above description is merely an embodiment of this utility model, and common knowledge such as specific structures and characteristics of the solution is not described in detail here. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model, and these should also be considered within the protection scope of this utility model. These modifications and improvements will not affect the effectiveness of the implementation of this utility model or the practicality of the patent.

Claims

1. A muffler mounting structure comprising a power unit, a muffler, a support unit, and a rack that supports the support unit; the power unit is disposed on the support unit, and the power unit is in air communication with the muffler; characterized in that: The support unit is provided with an extension, the silencer is installed on the extension, and an elastic unit is provided between the extension and the frame.

2. The muffler mounting structure according to claim 1, characterized by: The muffler is provided with mounting lugs, and the muffler is mounted on the extension via the mounting lugs.

3. The muffler mounting structure according to claim 2, characterized by: The mounting lugs are located at the far end, away from the ventilation connection between the power unit and the muffler.

4. The muffler mounting structure according to any one of claims 1 to 3, characterized by: The elastic unit includes a first elastic element, which is mounted between the extension and the frame by fasteners.

5. The muffler mounting structure according to claim 4, characterized by: The first elastic element is a double-jointed bent-arm rubber buffer support / conical elastic element / cylindrical elastic element.

6. The muffler mounting structure according to claim 4, characterized by: When the central axis of the first elastic element and the central axis of the fastener do not coincide, the center point of the fastener is taken as the origin of the reference coordinate system, and the angle between the central axis of the first elastic element and the horizontal direction is the installation angle, which ranges from -105° to 45°.

7. The muffler mounting structure according to claim 6, characterized by: The installation angle is 0°.

8. The muffler mounting structure according to any one of claims 1 to 3, 5 to 7, characterized by: Except for the extension, a second elastic element is provided between the support unit and the frame in other areas.

9. The muffler mounting structure according to claim 8, characterized by: The second elastic element is disposed between the end of the support unit and the frame.

10. An electrical generator characterized by: It includes the muffler mounting structure as described in any one of claims 1-9.

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