Exhaust tailpipe and working machine
By introducing a telescopic tube and a screw-on buckle structure into the exhaust tailpipe, the problem of exhaust gas directly contacting the counterweight is solved, the exhaust gas is effectively guided, the appearance of the counterweight is protected, and its service life is extended.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZOOMLION EARTHMOVING MASCH CO LTD
- Filing Date
- 2025-09-26
- Publication Date
- 2026-07-14
AI Technical Summary
In the existing technology, when the machinery is assembling a counterweight, the exhaust gas from the exhaust tailpipe will directly contact the counterweight, causing the high-temperature exhaust gas to damage the appearance of the counterweight and shorten its service life.
An exhaust tailpipe has been designed, including an exhaust pipe body and a telescopic pipe body. The telescopic pipe body is connected to the exhaust pipe body by a screw-on buckle. The corrugated part can be adjusted to extend and retract along the length direction to guide the exhaust gas to avoid the counterweight.
By adjusting the telescopic tube, exhaust gas is prevented from blowing directly onto the counterweight, thus protecting the counterweight's appearance and extending its service life.
Smart Images
Figure CN224496562U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of exhaust system technology, specifically relating to an exhaust tailpipe and a working machine. Background Technology
[0002] In construction machinery, the exhaust outlet of the muffler tailpipe is mostly located at the bottom of the counterweight. Considering the aesthetics of the exhaust tailpipe arrangement and the design specifications of short-tail and tailless models, the exhaust outlet is generally flush with or does not extend beyond the outer surface of the counterweight. When the construction machinery is not equipped with a counterweight, the exhaust gas passing through the exhaust outlet does not directly contact the counterweight. However, when the working environment changes, the machinery needs to be equipped with a counterweight due to construction requirements. Because the exhaust gas guide pipe is relatively short, the high-temperature exhaust gas will come into contact with the counterweight. Prolonged contact between the counterweight and engine exhaust gas will damage the paint around the shaded areas. After the paint peels off, rust will appear in the corresponding areas, severely affecting the appearance of the counterweight and its service life. Therefore, in existing technology, when a counterweight is installed, the length of the exhaust tailpipe cannot be adjusted, and the exhaust gas emitted from the tailpipe will damage the counterweight. Utility Model Content
[0003] The purpose of this invention is to provide an exhaust tailpipe and a working machine to prevent exhaust gas from damaging the counterweight.
[0004] To achieve the above objectives, this utility model provides an exhaust tailpipe for operating machinery, the exhaust tailpipe comprising:
[0005] The exhaust pipe body has tightening clips on its outer wall surface;
[0006] The telescopic pipe body includes an installation part and a corrugated part. The installation part is sleeved on the exhaust pipe body and has a tightening groove on its inner wall surface that is adapted to engage with the tightening buckle. The corrugated part can be adjusted to extend and retract along the length of the telescopic pipe body.
[0007] In an embodiment of this utility model, the tightening slot includes a first connecting segment, a second connecting segment, and a third connecting segment connected in sequence. The first connecting segment is connected to the inner wall surface of the mounting part. The third connecting segment is arranged axially with the first connecting segment along the mounting part. The second connecting segment extends axially along the mounting part. The first connecting segment, the second connecting segment, and the third connecting segment together form an insertion slot for locking and tightening the buckle.
[0008] In an embodiment of this utility model, the exhaust tailpipe also includes a sealing ring. A clearance notch is provided between the third connecting section and the inner wall of the mounting part to avoid the sealing ring. The opening of the clearance notch faces the tightening buckle. When the tightening buckle and the tightening groove are fitted together, the tightening buckle presses the sealing ring against the inner wall of the first connecting section.
[0009] In an embodiment of this utility model, the second connecting section is an arc-shaped plate structure and is arranged coaxially with the mounting part.
[0010] In an embodiment of this utility model, the tightening buckle includes an integral body and protrusions. The body is connected to the outer wall of the exhaust pipe body, and the protrusions are multiple and are arranged at equal intervals along the outer peripheral wall of the body.
[0011] In an embodiment of this utility model, the width of the protrusion gradually decreases along the circumferential dimension of the body portion, the width of the first end of the protrusion along the length direction is smaller than the width of the insertion slot, and the width of the second end of the protrusion along the length direction is larger than the width of the insertion slot.
[0012] In the embodiments of this utility model, there are multiple tightening slots, each corresponding to a protrusion, and the multiple tightening slots are arranged circumferentially along the inner wall of the mounting part.
[0013] In an embodiment of this utility model, the end of the corrugated portion facing away from the mounting portion is also connected to a guide portion for venting, and the corrugated portion, the mounting portion and the guide portion are arranged coaxially.
[0014] In an embodiment of this utility model, a working machine is also proposed, including the exhaust tailpipe as described above.
[0015] In an embodiment of this utility model, the working machinery includes a mechanical body connected to an exhaust tailpipe and a counterweight block detachably mounted on the mechanical body. The counterweight block has a clearance groove for accommodating the exhaust tailpipe.
[0016] Through the above technical solutions, the exhaust tailpipe and operating machinery provided by the embodiments of this utility model have the following beneficial effects:
[0017] The exhaust tailpipe of this application includes an exhaust pipe body and a telescopic pipe body. A tightening buckle is provided on the outer wall of the exhaust pipe body. The telescopic pipe body includes a mounting part and a corrugated part. The mounting part is fitted onto the exhaust pipe body, and the inner wall of the mounting part has a tightening groove that engages with the tightening buckle to lock the mounting part onto the outer wall of the exhaust pipe body. The corrugated part can be extended and retracted along the length of the telescopic pipe body, allowing exhaust gas to be guided to other locations along the corrugated part. This avoids damage to the counterweight caused by exhaust gas directly blowing onto it when the working machinery is equipped with a counterweight. Specifically, when the working machinery is equipped with a counterweight, the corrugated part can be extended along the length of the telescopic pipe body to prevent exhaust gas from directly blowing onto the counterweight.
[0018] Other features and advantages of this invention will be described in detail in the following detailed description section. Attached Figure Description
[0019] The accompanying drawings are provided to further illustrate the embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without any inventive effort. In the drawings:
[0020] Figure 1 This is a schematic diagram of the exhaust tailpipe structure according to this utility model;
[0021] Figure 2 This is a schematic diagram of the telescopic tube body according to this utility model;
[0022] Figure 3 The schematic diagram of the tightening groove in this utility model is shown below.
[0023] Figure 4 This is a schematic diagram of the screw-on buckle structure according to this utility model;
[0024] Figure 5 This is a structural diagram of the present invention without the counterweight and telescopic tube.
[0025] Figure 6 This is a schematic diagram of the structure of the present invention, which includes a counterweight and a telescopic tube.
[0026] Figure 7 This is a cross-sectional view of the engagement between the tightening groove and the tightening buckle in this utility model.
[0027] Explanation of reference numerals in the attached figures
[0028] Detailed Implementation
[0029] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of this utility model.
[0030] The exhaust tailpipe and operating machinery according to the present invention are described below with reference to the accompanying drawings.
[0031] like Figure 1As shown, in this embodiment, an exhaust tailpipe for working machinery is proposed. The exhaust tailpipe includes an exhaust pipe body 1 and a telescopic pipe body 3. A tightening buckle 2 is provided on the outer wall surface of the exhaust pipe body 1. The telescopic pipe body 3 includes a mounting part 31 and a corrugated part 32. The mounting part 31 is sleeved on the exhaust pipe body 1. The inner wall surface of the mounting part 31 forms a tightening groove 4 that is adapted to engage with the tightening buckle 2, so as to lock the mounting part 31 to the outer wall surface of the exhaust pipe body 1. The corrugated part 32 can be extended and retracted along the length direction of the telescopic pipe body 3, so that the exhaust gas can be guided to other places along the corrugated part 32, avoiding damage to the counterweight 10 caused by the exhaust gas blowing directly onto the counterweight when the working machinery is equipped with a counterweight 10. Specifically, as Figure 5 and Figure 6 As shown, when the working machinery is equipped with a counterweight 10, the corrugated part 32 can be extended along the length of the telescopic pipe body 3 to prevent exhaust gas from blowing directly onto the counterweight 10, thus extending the service life of the counterweight 10. Applying a rotational force to the telescopic pipe body 3 causes it to rotate around its axis, thereby achieving locking and unlocking between the exhaust pipe body 1 and the telescopic pipe body 3, making assembly and disassembly convenient. Furthermore, by adjusting the deflection angle of the corrugated part 32, the exhaust gas blowing angle can also be adjusted. The corrugated part 32 uses a corrugated pipe, a technology already in use.
[0032] like Figure 3 As shown, in this embodiment, the tightening slot 4 includes a first connecting segment 41, a second connecting segment 42, and a third connecting segment 43 connected in sequence. The first connecting segment 41 is connected to the inner wall surface of the mounting part 31 and extends circumferentially along the inner wall surface of the mounting part 31. The third connecting segment 43 is arranged axially spaced from the first connecting segment 41 along the mounting part 31. The second connecting segment 42 extends axially along the mounting part 31 and is connected to both the third connecting segment 43 and the first connecting segment 41. The first connecting segment 41, the second connecting segment 42, and the third connecting segment 43 enclose and form an insertion slot 44 for engaging the tightening buckle 2. This facilitates the tightening buckle 2 entering the insertion slot 44 under the action of rotational force and engaging and fixing with the tightening slot 4, ensuring a secure lock and preventing relative movement between the telescopic pipe body 3 and the exhaust pipe body 1.
[0033] like Figure 1 and Figure 7 As shown, in this embodiment, the exhaust tailpipe also includes a sealing ring 5. A clearance notch 45 is provided between the third connecting section 43 and the inner wall of the mounting part 31 to avoid the sealing ring 5. The size of the clearance notch 45 can be set according to actual needs to ensure that the sealing ring 5 can pass through. The opening of the clearance notch 45 is located on the side facing the tightening buckle 2. When the tightening buckle 2 and the tightening groove 4 are fitted together, the tightening buckle 2 can press the sealing ring 5 against the inner wall of the first connecting section 41 to achieve a tight seal, making it difficult for relative movement to occur between the telescopic pipe body 3 and the exhaust pipe body 1.
[0034] like Figure 2 and Figure 3 As shown, in this embodiment, the second connecting section 42 is an arc-shaped plate structure and is coaxially arranged with the mounting part 31 to better cooperate with the exhaust pipe body 1, ensuring that the telescopic pipe body 3 is not prone to jamming when rotating relative to the exhaust pipe body 1, and avoiding interference between the second connecting section 42 and the relative rotation between the telescopic pipe body 3 and the exhaust pipe body 1. The arc-shaped protrusion of the second connecting section 42 faces the inner wall surface of the mounting part 31.
[0035] like Figure 4 As shown, in this embodiment, the tightening buckle 2 includes an integral body 21 and protrusions 22. The body 21 is connected to the outer wall of the exhaust pipe body 1. Specifically, the body 21 can be fixed to the outer wall of the exhaust pipe body 1 by welding, resulting in a stable connection. There are multiple protrusions 22, evenly spaced along the outer periphery of the body 21. In this application, there are four protrusions 22. Similarly, there are also four tightening slots 4. The four protrusions 22 are evenly spaced along the outer periphery of the body 21, and the four tightening slots 4 are evenly spaced along the inner wall of the mounting portion 31. The protrusions 22 and tightening slots 4 are staggered, ensuring that a protrusion 22 can be inserted between any two adjacent tightening slots 4, and similarly, a tightening slot 4 can be inserted between any two adjacent protrusions 22. The number of protrusions 22 and the number of tightening slots 4 can be adjusted according to actual needs.
[0036] like Figure 4 As shown, in this embodiment, the width of the protrusion 22 gradually decreases along the circumferential dimension of the main body 21. The width of the first end of the protrusion 22 along the length direction is smaller than the width of the insertion slot 44, and the width of the second end of the protrusion 22 along the length direction is larger than the width of the insertion slot 44. As the telescopic tube 3 rotates relative to the exhaust pipe body 1, the first end of the protrusion 22 along the length direction can be inserted into the insertion slot 44. Since the width of the second end of the protrusion 22 along the length direction is larger than the width of the insertion slot 44, when rotated to the preset position, the protrusion 22 will be locked in the insertion slot 44 and cannot continue to rotate, thereby achieving a firm lock between the telescopic tube 3 and the exhaust pipe body 1.
[0037] like Figure 2 As shown, in this embodiment, multiple tightening slots 4 are provided, each corresponding to a protrusion 22, to ensure that when the telescopic tube 3 and the exhaust pipe body 1 are locked together, each protrusion 22 is inserted into a corresponding insertion slot 44, thus improving the stability of the locking between the telescopic tube 3 and the exhaust pipe body 1. Multiple tightening slots 4 are arranged at equal intervals along the circumferential direction of the inner wall of the mounting portion 31 to ensure uniform force distribution on the telescopic tube 3.
[0038] like Figure 2 As shown, in this embodiment, the end of the corrugated portion 32 facing away from the mounting portion 31 is also connected to a guide portion 33 for exhaust. The guide portion 33 plays a role in conducting and guiding the exhaust gas, ensuring that when the working machinery is equipped with a counterweight 10, the exhaust gas will not blow directly onto the counterweight 10. The corrugated portion 32, the mounting portion 31, and the guide portion 33 are arranged coaxially and connected in sequence. The corrugated portion 32, the mounting portion 31, and the guide portion 33 are all circular tubular structures.
[0039] In this embodiment, a working machine is also proposed, including an exhaust tailpipe as described above. The working machine includes construction machinery such as mini excavators, mini aerial work platforms, and mini skid steer loaders. The exhaust port of the working machine is also equipped with a muffler. The muffler is a device designed for engines without aftertreatment systems. Engine exhaust gas typically enters the muffler from the engine exhaust port and is then discharged into the atmosphere through the exhaust tailpipe. The muffler serves to reduce noise, guide exhaust flow, and regulate back pressure.
[0040] In this embodiment, the operating machinery includes a mechanical body connected to an exhaust tailpipe and a counterweight 10 detachably mounted on the mechanical body. The counterweight 10 has a clearance groove for accommodating the exhaust tailpipe. Figure 5 As shown, this is the case where only the exhaust pipe body 1 is installed, without the counterweight 10. If the counterweight 10 is added, the exhaust gas emitted from the exhaust pipe body 1 will blow directly onto the counterweight 10, causing damage to the counterweight 10. And as... Figure 6 As shown, when a counterweight is installed, a telescopic pipe body 3 is provided on the exhaust pipe body 1. The corrugated part 32 can be extended and retracted along the length direction of the telescopic pipe body 3 to prevent exhaust gas from blowing directly onto the counterweight 10 and extend the service life of the counterweight 10.
[0041] In the description of this utility model, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0044] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.
Claims
1. An exhaust tailpipe, characterized in that, The exhaust tailpipe includes: The exhaust pipe body (1) has a tightening buckle (2) on its outer wall surface; The telescopic tube body (3) includes an installation part (31) and a corrugated part (32). The installation part (31) is sleeved on the exhaust pipe body (1) and the inner wall surface is formed with a tightening groove (4) that is adapted to engage with the tightening buckle (2). The corrugated part (32) can be adjusted to extend and retract along the length direction of the telescopic tube body (3).
2. The exhaust tailpipe according to claim 1, characterized in that, The tightening slot (4) includes a first connecting section (41), a second connecting section (42), and a third connecting section (43) connected in sequence. The first connecting section (41) is connected to the inner wall of the mounting part (31). The third connecting section (43) and the first connecting section (41) are arranged axially spaced along the mounting part (31). The second connecting section (42) extends axially along the mounting part (31). The first connecting section (41), the second connecting section (42), and the third connecting section (43) enclose and form an insertion slot (44) for engaging the tightening buckle (2).
3. The exhaust tailpipe according to claim 2, characterized in that, The exhaust tailpipe also includes a sealing ring (5). There is a clearance notch (45) between the third connecting section (43) and the inner wall of the mounting part (31) to avoid the sealing ring (5). The opening of the clearance notch (45) faces the tightening buckle (2). When the tightening buckle (2) is adapted to engage with the tightening groove (4), the tightening buckle (2) presses the sealing ring (5) against the inner wall of the first connecting section (41).
4. The exhaust tailpipe according to claim 2, characterized in that, The second connecting section (42) is an arc-shaped plate structure and is arranged coaxially with the mounting part (31).
5. The exhaust tailpipe according to claim 2, characterized in that, The tightening buckle (2) includes an integral body part (21) and a protrusion part (22). The body part (21) is connected to the outer wall surface of the exhaust pipe body (1). The number of protrusion parts (22) is multiple and they are arranged at equal intervals along the outer peripheral wall of the body part (21).
6. The exhaust tailpipe according to claim 5, characterized in that, The width of the protrusion (22) is gradually reduced along the circumferential dimension of the body (21). The width of the first end of the protrusion (22) along the length direction is smaller than the width of the insertion groove (44), and the width of the second end of the protrusion (22) along the length direction is larger than the width of the insertion groove (44).
7. The exhaust tailpipe according to claim 5, characterized in that, The number of the tightening slots (4) is multiple and they are provided one-to-one with the protrusions (22). The multiple tightening slots (4) are arranged circumferentially along the inner wall surface of the mounting part (31).
8. The exhaust tailpipe according to any one of claims 1 to 7, characterized in that, The corrugated part (32) is connected to a guide part (33) for exhaust at one end away from the mounting part (31), and the corrugated part (32), the mounting part (31) and the guide part (33) are arranged coaxially.
9. A type of operating machinery, characterized in that, Includes the exhaust tailpipe according to any one of claims 1 to 8.
10. The operating machinery according to claim 9, characterized in that, The working machinery includes a mechanical body connected to the exhaust tailpipe and a counterweight (10) detachably installed on the mechanical body. The counterweight (10) is provided with a clearance groove to accommodate the exhaust tailpipe.