Front end loader exhaust system

Abstract

The utility model relates to, disclose a kind of front end loader exhaust systems, including sequentially intercommunicating exhaust tail pipe assembly, rear exhaust pipe assembly, muffler and front exhaust pipe assembly, the muffler is fixed on oil tank by hoop assembly;First bellow is provided in the middle part of the front exhaust pipe assembly, and the front exhaust pipe assembly is fixed on the frame by at least two supports;The rear exhaust pipe assembly includes the second bellow of the exhaust tail pipe assembly air inlet intercommunication, and the rear exhaust pipe assembly and exhaust tail pipe assembly are fixed on the frame by fixed plate respectively.The utility model is fixed by flexible connection's bellow, multiple support and fixed plate, segmented connection's pipeline, effectively reduce the stress concentration problem caused by front end loader exhaust system rigid connection, increase exhaust system stability, easy to disassemble and maintain.

Description

Technical Field

[0001] This utility model relates to the field of front-mounted exhaust technology, specifically a front-mounted exhaust system. Background Technology

[0002] In large equipment such as reach stackers, the design of the exhaust system directly affects the equipment's reliability, maintenance costs, and service life. Traditional exhaust systems typically use rigid connections, such as directly fixing the muffler and exhaust pipe to the frame or fuel tank via a section of stainless steel tubing. This design is prone to dimensional errors during frame and fuel tank manufacturing, leading to misalignment of the exhaust system's mounting holes and difficulty in accurately installing the exhaust pipe, increasing assembly complexity. Furthermore, due to the poor flexibility of steel tubing, engine vibrations and road impacts are easily transmitted to the exhaust pipe during operation, causing significant stress on bent sections and increasing the risk of breakage over time, thus affecting the exhaust system's lifespan. Traditional exhaust systems are mostly integral connections, making installation inconvenient. If component manufacturing errors are significant, disassembly may require modification of the counterweight, and the limited connection points between the exhaust system and the reach stacker result in insufficient stability.

[0003] In summary, there is an urgent need for a front-mounted exhaust system that, through flexible corrugated pipe connections, multi-support and fixed plate structures, and segmented plug-in structures, reduces stress concentration in the exhaust system, increases its stability, and optimizes the convenience of installation and maintenance. Utility Model Content

[0004] The purpose of this utility model is to provide a front-mounted exhaust system to solve the problems mentioned in the background art, so as to reduce stress concentration in the exhaust system, increase the stability of the exhaust system, and optimize the convenience of installation and maintenance.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A front-mounted exhaust system includes an exhaust tailpipe assembly, a rear exhaust pipe assembly, a muffler, and a front exhaust pipe assembly connected in sequence. The muffler is fixed to a fuel tank by a clamp assembly. A first corrugated pipe is provided in the middle of the front exhaust pipe assembly, and the front exhaust pipe assembly is fixed to the vehicle frame by at least two brackets. The rear exhaust pipe assembly includes a second corrugated pipe that connects to the air inlet of the exhaust tailpipe assembly. The rear exhaust pipe assembly and the exhaust tailpipe assembly are respectively fixed to the vehicle frame by fixing plates.

[0007] As a further embodiment of this utility model: In order to fix the muffler to the fuel tank and thereby reduce the overall vehicle operating noise, the clamp assembly includes a muffler clamp sleeved on the outer wall of the muffler and a fixing bracket fixedly connected to the muffler clamp. The fixing bracket is fixedly connected to the fuel tank through a third fixing plate.

[0008] As a further embodiment of this utility model: in order to reduce the vibration and impact on the front exhaust pipe assembly and to adapt to manufacturing tolerances, the front exhaust pipe assembly includes an exhaust pipe connector, a first front exhaust pipe, a second front exhaust pipe, a first corrugated pipe and a third front exhaust pipe connected in sequence; the air inlet of the exhaust pipe connector is connected to the engine, and the air outlet of the third front exhaust pipe is connected to the air inlet of the muffler.

[0009] As a further embodiment of this utility model: In order to enhance the connection stability of the front exhaust pipe assembly, the air outlet of the first bellows and the air inlet of the third front exhaust pipe, and the air inlet of the first bellows and the air outlet of the second front exhaust pipe are respectively fixedly connected by flanges.

[0010] As a further embodiment of this utility model: in order to stably connect the front exhaust pipe assembly to the vehicle frame, a first bracket and a second bracket are respectively fixedly connected to different pipe sections of the front exhaust pipe assembly by clamps. The first bracket and the second bracket are fixedly connected to the vehicle frame by waist holes and fasteners.

[0011] As a further embodiment of this utility model: in order to reduce the vibration and impact on the rear exhaust pipe assembly and to adapt to manufacturing tolerances, the rear exhaust pipe assembly includes a rear exhaust pipe with an air inlet connected to the air outlet of the muffler. The air outlet of the rear exhaust pipe is fixedly connected to the air inlet of the second corrugated pipe by a clamp. The air outlet of the second corrugated pipe is fastened to the air inlet of the exhaust tailpipe assembly by a flange.

[0012] As a further embodiment of this utility model: in order to stably connect the rear exhaust pipe assembly and the exhaust tailpipe assembly to the vehicle frame, a first fixing plate is fixedly connected to the exhaust tailpipe assembly by bolts, and a second fixing plate is fixedly connected to the clamp at the air inlet of the second corrugated pipe. The first fixing plate and the second fixing plate are fastened to the vehicle frame by waist holes and fasteners.

[0013] As a further embodiment of this utility model: in order to reduce the vibration and impact on the muffler, a shock-absorbing layer is provided between the third fixing plate and the oil tank.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This utility model features a novel structure. The corrugated pipe section in both the front and rear exhaust pipe assemblies allows for installation to accommodate the manufacturing tolerances of the chassis and fuel tank. Furthermore, the corrugated pipe effectively absorbs high-frequency vibrations generated during engine operation, preventing vibration transmission to components such as the muffler and chassis, thus reducing noise and structural fatigue risks. Multiple brackets in the front exhaust pipe assembly and multiple fixing plates in the rear exhaust pipe assembly and exhaust tailpipe assembly ensure a more stable connection between the exhaust system and the chassis. The brackets and fixing plates are equipped with perforations for easy adjustment, preventing interference between the exhaust system and other systems. The segmented, multi-pipe connection of the front and rear exhaust pipe assemblies facilitates the disassembly, assembly, and maintenance of the exhaust system. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the clamp assembly of this utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the second corrugated pipe of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the second front exhaust pipe of this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the first corrugated pipe of this utility model;

[0021] Figure 6 This is a schematic diagram of the third front exhaust pipe of this utility model;

[0022] Figure 7 This is a schematic diagram of the structure of the first support of this utility model;

[0023] Figure 8 This is a schematic diagram of the structure of the second support of this utility model;

[0024] Figure 9 This is a schematic diagram of the structure of the second fixing plate of this utility model;

[0025] Figure 10 This is a schematic diagram of the structure of the first fixing plate of this utility model;

[0026] In the diagram: 1-Exhaust tailpipe assembly, 11-First fixing plate, 2-Muffler, 21-Clamping assembly, 211-Muffler clamp, 212-Fixing bracket, 22-Third fixing plate, 3-Rear exhaust pipe assembly, 31-Second corrugated pipe, 32-Rear exhaust pipe, 33-Second fixing plate, 4-Front exhaust pipe assembly, 41-Exhaust connector, 42-First front exhaust pipe, 43-Second front exhaust pipe, 44-First corrugated pipe, 45-Third front exhaust pipe, 46-First bracket, 47-Second bracket. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] In the description of this application, it should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. For ease of description, the dimensions of the various parts shown in the accompanying drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations.

[0029] It should be noted that in the description of this application, the directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0030] Please see Figure 1-10In this embodiment of the present invention, a front-mounted exhaust system includes an exhaust tailpipe assembly 1, a rear exhaust pipe assembly 3, a muffler 2, and a front exhaust pipe assembly 4 connected in sequence. The front exhaust pipe assembly 4 includes an exhaust pipe connector 41, a first front exhaust pipe 42, a second front exhaust pipe 43, a first corrugated pipe 44, and a third front exhaust pipe 45 connected in sequence. The air inlet of the exhaust pipe connector 41 is connected to the air outlet of the engine, and the air outlet of the exhaust pipe connector 41 is fitted onto the air inlet of the first front exhaust pipe 42 and fixedly connected by a clamp. The first front exhaust pipe 42... The air outlet of muffler 2 is fitted onto the air inlet of the second front exhaust pipe 43 and fixedly connected by a clamp; flanges are fixedly connected to both ends of the first corrugated pipe 44, the air inlet of the third front exhaust pipe 45, and the air outlet of the second front exhaust pipe 43 respectively; the flange of the air outlet of the second front exhaust pipe 43 is fastened to the flange of the air inlet of the first corrugated pipe 44, the flange of the air outlet of the first corrugated pipe 44 is fastened to the flange of the air inlet of the third front exhaust pipe 45, and the air outlet of the third front exhaust pipe 45 is inserted into the air inlet of the muffler 2 and fixedly connected by a clamp.

[0031] refer to Figure 7 and Figure 8 Both the first bracket 46 and the second bracket 47 have waist holes to facilitate adjustment of the position of the first bracket 46 and the second bracket 47 after they are fixed. A clamp is fitted at the air outlet of the second front exhaust pipe 43. The clamp is fastened to the first bracket 46 through the waist hole by a fastener. A clamp is fitted in the middle of the third front exhaust pipe 45. The clamp is fastened to the second bracket 47 through the waist hole by a fastener. The first bracket 46 and the second bracket 47 are fastened to the frame through the waist hole by a fastener, which is used to fix the front exhaust pipe assembly 4 to the frame.

[0032] Two clamp assemblies 21 are respectively fitted onto both ends of the muffler 2, such as... Figure 2 As shown, the clamp assembly 21 includes a muffler clamp 211 sleeved on the outer wall of the muffler 2. A fixing bracket 212 is welded onto the muffler clamp 211. Both the fixing bracket 212 and the third fixing plate 22 have screw holes. Fasteners pass through the screw holes on the fixing bracket 212 and the third fixing plate 22 in sequence, fastening the third fixing plate 22 between the two fixing brackets 212. The third fixing plate 22 is fastened to the fuel tank by the fasteners, used to fix the muffler 2 to the fuel tank. A damping layer is covered between the contact surface of the third fixing plate 22 and the fuel tank to reduce the vibration transmitted from the fuel tank to the muffler 2. In this embodiment, the damping layer is a rubber layer.

[0033] The rear exhaust pipe assembly 3 includes a rear exhaust pipe 32 whose air inlet is connected to the air outlet of the muffler 2. The air inlet of the rear exhaust pipe 32 is inserted into the air outlet of the muffler 2 and fixedly connected by a clamp. The air outlet of the rear exhaust pipe 32 is sleeved on the air inlet of the second corrugated pipe 31 and fixedly connected by a clamp. The air outlet of the second corrugated pipe 31 and the air inlet of the exhaust tailpipe assembly 1 are respectively fixedly connected with flanges. The flange of the air outlet of the second corrugated pipe 31 and the flange of the air inlet of the exhaust tailpipe assembly 1 are fastened together.

[0034] refer to Figure 9 and Figure 10 Both the first fixing plate 11 and the second fixing plate 33 have waist holes. The air inlet of the exhaust tailpipe assembly 1 is fastened to the first fixing plate 11 by fasteners. The clamp at the air inlet of the second bellows 31 is fastened to the second fixing plate 33 by fasteners. The first fixing plate 11 and the second fixing plate 33 are fastened to the vehicle frame by fasteners passing through the waist holes, so that the rear exhaust pipe assembly 3 and the exhaust tailpipe assembly 1 are fixed to the vehicle frame. In this embodiment, the fasteners are set as threaded bolts and nuts.

[0035] This utility model has a novel structure and stable operation. In use, the positions of the first corrugated pipe 44 and the second corrugated pipe 31 are adjusted according to the positions of the frame and the fuel tank. Then, the first bracket 46, the second bracket 47, the first fixing plate 11, and the second fixing plate 33 are all fastened to the frame with bolts and nuts, so that the front exhaust pipe assembly 4, the rear exhaust pipe assembly 3, and the exhaust tailpipe assembly 1 are fixed to the frame. Then, the third fixing plate 22 is fastened to the fuel tank with bolts and nuts, so that the muffler 2 is fixed to the fuel tank. Then, the air inlet of the exhaust pipe 41 of the front exhaust pipe assembly 4 is fixedly connected and connected to the exhaust outlet of the engine, so that the gas in the engine can pass through the front exhaust pipe assembly 4, the muffler 2, the rear exhaust pipe assembly 3, and the exhaust tailpipe assembly 1 in sequence and be discharged from the exhaust tailpipe assembly 1.

[0036] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0037] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the scope of the claims of this application shall be within the protection scope of the claims of this application.

Claims

1. A reach stacker exhaust system comprising, in series, an exhaust tailpipe assembly (1), a rear exhaust pipe assembly (3), a silencer (2) and a front exhaust pipe assembly (4), characterised in that: The muffler (2) is fixed to the fuel tank by a clamp assembly (21); the front exhaust pipe assembly (4) is provided with a first corrugated pipe (44) in the middle, and the front exhaust pipe assembly (4) is fixed to the vehicle frame by at least two brackets; the rear exhaust pipe assembly (3) includes a second corrugated pipe (31) that connects to the air inlet of the exhaust tailpipe assembly (1), and the rear exhaust pipe assembly (3) and the exhaust tailpipe assembly (1) are respectively fixed to the vehicle frame by fixing plates.

2. A reach stacker exhaust system according to claim 1, wherein: The clamp assembly (21) includes a muffler clamp (211) sleeved on the outer wall of the muffler (2) and a fixing bracket (212) fixedly connected to the muffler clamp (211). The fixing bracket (212) is fixedly connected to the oil tank through a third fixing plate (22).

3. A reach stacker exhaust system according to claim 1, wherein: The front exhaust pipe assembly (4) includes an exhaust pipe (41), a first front exhaust pipe (42), a second front exhaust pipe (43), a first corrugated pipe (44), and a third front exhaust pipe (45) connected in sequence; the air inlet of the exhaust pipe (41) is connected to the engine, and the air outlet of the third front exhaust pipe (45) is connected to the air inlet of the muffler (2).

4. A reach stacker exhaust system according to claim 3, wherein: The air outlet of the first bellows (44) and the air inlet of the third front exhaust pipe (45), as well as the air inlet of the first bellows (44) and the air outlet of the second front exhaust pipe (43), are fixedly connected by flanges.

5. A reach stacker exhaust system according to claim 1, wherein: The front exhaust pipe assembly (4) has a first bracket (46) and a second bracket (47) fixedly connected to different pipe sections by clamps. The first bracket (46) and the second bracket (47) are fixedly connected to the vehicle frame by waist holes and fasteners.

6. A reach stacker exhaust system according to claim 1, wherein: The rear exhaust pipe assembly (3) includes a rear exhaust pipe (32) whose air inlet is connected to the air outlet of the muffler (2). The air outlet of the rear exhaust pipe (32) is fixedly connected to the air inlet of the second corrugated pipe (31) by a clamp. The air outlet of the second corrugated pipe (31) is fastened to the air inlet of the exhaust tailpipe assembly (1) by a flange.

7. A reach stacker exhaust system according to claim 1, wherein: The exhaust tailpipe assembly (1) is fixedly connected to a first fixing plate (11) by bolts, and a second fixing plate (33) is fixedly connected to the clamp at the air inlet of the second corrugated pipe (31). The first fixing plate (11) and the second fixing plate (33) are fastened to the frame by waist holes and fasteners.

8. A reach stacker exhaust system according to claim 2, wherein: A shock-absorbing layer is provided between the third fixing plate (22) and the oil tank.

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