Automobile exhaust pipe convenient to overhaul

Abstract

The utility model relates to the technical field of automobile exhaust pipes, and discloses an automobile exhaust pipe convenient to overhaul, which comprises an exhaust manifold, a three-way catalyst and a silencer, an exhaust main pipe is arranged between every two of the exhaust manifold, the three-way catalyst and the silencer, and a dismounting mechanism is arranged on the outer wall of the exhaust main pipe. The buffer frame can reduce contact shaking between the exhaust main pipe and the bottom of an automobile and reduce abrasion and noise caused by vibration, the first fixing part and the second fixing part are matched with each other and work cooperatively with the fastening bolt and the fastening nut, rapid installation and detachment of the exhaust main pipe are achieved, the maintenance efficiency is greatly improved, and the maintenance cost is reduced. The first rotating ring and the second rotating ring can limit the fastening bolt and the fastening nut, in the long-term running process of an automobile, even if the automobile faces complex road conditions and strong vibration, the fastening nut can be effectively prevented from loosening, and therefore the stability and reliability of installation of the main exhaust pipe are remarkably improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of automobile exhaust pipe, especially to an automobile exhaust pipe convenient to overhaul. BACKGROUND

[0002] The automobile exhaust pipe, as a vital component of the automobile exhaust system, is connected with the exhaust manifold of the engine at one end, like the "breathing passage" of the automobile, and undertakes the key mission of discharging the exhaust gas generated after the engine combustion. It is usually made of stainless steel or other heat-resistant and corrosion-resistant materials, can withstand the scouring of high-temperature and high-pressure exhaust gas, and its design not only ensures the smooth discharge of exhaust gas to maintain the normal operation of the engine, but also reduces exhaust noise and noise pollution to the surrounding environment through a series of complex structures such as mufflers. The exhaust pipes of different vehicle models differ in pipe diameter, length, shape and internal structure to adapt to the performance characteristics and power output requirements of their respective engines, and have a considerable impact on the power, fuel economy and environmental protection of the vehicle.

[0003] The installation of the traditional exhaust pipe often requires the use of multiple tools, which is relatively cumbersome and time-consuming. When the exhaust system needs to be repaired or replaced, it will increase the work difficulty and workload of the maintenance personnel and reduce the maintenance efficiency. The existing fixing method of the exhaust pipe may cause the fastening parts to loosen under long-term complex road conditions and strong vibration. Once the nut is loose, it may cause the exhaust pipe connection part to leak, affecting the performance of the exhaust system, and even may cause safety hazards. Therefore, we propose a kind of automobile exhaust pipe convenient to overhaul. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of automobile exhaust pipe convenient to overhaul to solve the problems raised in the above background.

[0005] To achieve the above purpose, the utility model provides the following technical scheme: a kind of automobile exhaust pipe convenient to overhaul, including exhaust manifold, three-way catalyst and muffler, exhaust manifold, three-way catalyst and muffler are all provided with exhaust main pipe between two, the outer wall of exhaust main pipe is provided with dismounting mechanism, three-way catalyst and muffler are provided with connecting mechanism between exhaust main pipe, the dismounting mechanism includes buffer frame and second fixed part, the bottom of buffer frame is fixedly installed with first fixed part, first fixed part and second fixed part are connected with fastening bolt and fastening nut through through-hole, the outer wall of fastening bolt and fastening nut is respectively connected with first rotary ring and second rotary ring through first rotary groove and second rotary groove, first rotary ring and second rotary ring are fixedly connected with limiting piece between.

[0006] Preferably, the inner walls of the first fixing member and the second fixing member are fixedly provided with protective pads, which abut against the outer wall of the exhaust main pipe.

[0007] Preferably, the through hole penetrates through the two side surfaces of the first fixing member and the second fixing member, the fastening bolt is inserted into the through hole, the fastening nut is threadedly connected to the outer wall of the fastening bolt, the first rotating groove is formed in the upper end of the outer wall of the fastening nut, and the second rotating groove is formed in the outer wall of the fastening nut.

[0008] Preferably, the first rotating ring is rotatably connected to the outer wall of the first rotating groove, the second rotating ring is rotatably connected to the outer wall of the second rotating groove, and the limiting member abuts against the outer walls of the first fixing member and the second fixing member.

[0009] Preferably, the connecting mechanism comprises a first connecting disc and a second connecting disc, the inner wall of the first connecting disc is provided with a threaded groove, and the second connecting disc is fixedly provided with a threaded sleeve on the side opposite to the first connecting disc, and the threaded sleeve is threadedly connected to the inner wall of the threaded groove.

[0010] Preferably, the surfaces of the first connecting disc and the second connecting disc are penetrated by openings near the edges, the connecting bolts are inserted into the openings, and the connecting nuts are threadedly connected to the outer walls of the connecting bolts.

[0011] The technical effects and advantages of the utility model are as follows:

[0012] 1. The dismounting mechanism can reduce the contact and shaking of the exhaust main pipe and the bottom of the automobile, reduce the abrasion and noise caused by the shaking, and realize the quick installation and dismounting of the exhaust main pipe through the cooperation of the first fixing member, the second fixing member, the fastening bolt and the fastening nut, thereby greatly improving the maintenance efficiency.

[0013] 2. The connecting mechanism can realize stable fixation through the connecting bolt and the connecting nut, and the threaded sleeve of the second connecting disc can be screwed into the threaded groove in the first connecting disc to complete secondary fastening. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The utility model discloses a three -dimensional structure schematic diagram.

[0015] Figure 2 It is a three-dimensional structure schematic view of the dismounting mechanism of the utility model;

[0016] Figure 3 It is a partial structure schematic view of the dismounting mechanism of the utility model;

[0017] Figure 4 It is a partial structure schematic view of the dismounting mechanism of the utility model;

[0018] Figure 5 It is the explosion drawing of the utility model; Figure 4

[0019] Figure 6 It is a partial structure schematic view of the connecting mechanism of the utility model;

[0020] Figure 7 It is a partial structure schematic view of the connecting mechanism of the utility model.

[0021] In the drawing: 1, exhaust manifold; 2, exhaust main pipe; 3, three-way catalyst; 4, muffler; 5, dismounting mechanism; 501, buffer frame; 502, first fixed part; 503, second fixed part; 504, protective pad; 505, through hole; 506, fastening bolt; 507, first rotating groove; 508, fastening nut; 509, second rotating groove; 510, limiting part; 511, first rotating ring; 512, second rotating ring; 6, connecting mechanism; 601, first connecting disc; 602, threaded groove; 603, second connecting disc; 604, threaded sleeve; 605, opening; 606, connecting bolt; 607, connecting nut. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the person skilled in the art without creative labor fall within the protection scope of the utility model.

[0023] Embodiment one:

[0024] Please refer to the drawings of the utility model Figure 1 - the drawings of the utility model Figure 5 ​The utility model provides an automobile exhaust pipe convenient for overhauling, which comprises an exhaust manifold 1, a three-way catalyst 3 and a muffler 4, exhaust manifolds 1, three-way catalysts 3 and mufflers 4 are provided with exhaust main pipes 2 between each other, a dismounting mechanism 5 is arranged on the outer wall of the exhaust main pipe 2, a connecting mechanism 6 is arranged between the three-way catalyst 3 and the muffler 4 and the exhaust main pipe 2, the dismounting mechanism 5 comprises a buffer frame 501 and a second fixing piece 503, a first fixing piece 502 is fixedly installed at the bottom of the buffer frame 501, the first fixing piece 502 and the second fixing piece 503 are connected with a fastening bolt 506 and a fastening nut 508 through a through hole 505, the outer wall of the fastening bolt 506 and the fastening nut 508 is connected with a first rotating ring 511 and a second rotating ring 512 through a first rotating groove 507 and a second rotating groove 509 respectively, a limiting piece 510 is fixedly connected between the first rotating ring 511 and the second rotating ring 512, a protective pad 504 is fixedly installed on the inner wall of the first fixing piece 502 and the second fixing piece 503, the protective pad 504 abuts against the outer wall of the exhaust main pipe 2, the through hole 505 penetrates the two side surfaces of the first fixing piece 502 and the second fixing piece 503, the fastening bolt 506 is inserted into the through hole 505, the fastening nut 508 is threadedly connected to the outer wall of the fastening bolt 506, the first rotating groove 507 is arranged on the upper end outer wall of the fastening nut 508, the second rotating groove 509 is arranged on the outer wall of the fastening nut 508, the first rotating ring 511 is rotatably connected to the outer wall of the first rotating groove 507, the second rotating ring 512 is rotatably connected to the outer wall of the second rotating groove 509, and the limiting piece 510 abuts against the outer wall of the first fixing piece 502 and the second fixing piece 503.

[0025] The length of the limiting piece 510 is just right for the fastening nut 508 to be screwed on the outer wall of the fastening bolt 506, and the limiting piece 510 can be deformed manually to facilitate the unscrewing of the fastening nut 508 from the fastening bolt 506.

[0026] Specifically, the buffer frame 501 can reduce the contact and shaking of the exhaust main pipe 2 with the bottom of the automobile, the first fixing piece 502 and the second fixing piece 503 can cooperate with the fastening bolt 506 and the fastening nut 508 to quickly install and dismount the exhaust main pipe 2, the first rotating ring 511 and the second rotating ring 512 can limit the fastening bolt 506 and the fastening nut 508, preventing the fastening nut 508 from loosening during long-term driving of the automobile, and improving the stability of the installation of the exhaust main pipe 2.

[0027] Embodiment two

[0028] Please refer to the accompanying drawings Figure 1 , the accompanying drawings Figure 6 and the accompanying drawings Figure 7And on the basis of embodiment one, further get, connecting mechanism 6 includes first connecting disc 601 and second connecting disc 603, the inside of first connecting disc 601 is provided with thread groove 602, the opposite side of second connecting disc 603 is fixedly installed with threaded sleeve kit 604, threaded sleeve kit 604 is connected in the inside of thread groove 602, the surface of first connecting disc 601 and second connecting disc 603 is close to the edge position and is all penetrated with opening 605, opening 605 is inserted with connecting bolt 606, the outer wall of connecting bolt 606 is connected with connecting nut 607.

[0029] Thread groove 602 and threaded sleeve kit 604 can be closely attached, cooperate the close attachment of first connecting disc 601 and second connecting disc 603, can avoid gas from the leakage, guarantees the sealing property of exhaust pipe.

[0030] Specifically, first connecting disc 601 and second connecting disc 603 are fixed through connecting bolt 606 and connecting nut 607, threaded sleeve kit 604 of second connecting disc 603 can also be connected in the thread groove 602 in first connecting disc 601, relative to traditional flange disc connection, improve the sealing property.

[0031] The utility model discloses a working principle: the utility model discloses a kind of automobile exhaust pipe convenient for overhauling, automobile exhaust pipe is composed of exhaust manifold 1, three-way catalytic converter 3 and muffler 4, is connected by exhaust main pipe 2 between two, and the mounting and dismounting mechanism 5 on exhaust main pipe 2 realizes its installation and dismounting with car, three-way catalytic converter 3 and muffler 4 are connected between exhaust main pipe 2 by connecting mechanism 6, guarantee the sealing property and stability of connection, when car travels, buffer frame 501 can reduce the contact shaking between exhaust main pipe 2 and car bottom, reduce the noise and component abrasion generated due to vibration, pass through hole 505 with fastening bolt 506 again, then with fastening nut 508 be connected in fastening bolt 506 outer wall by screw thread, realize the clamping of first fixed part 502 and second fixed part 503 to exhaust main pipe 2, to install exhaust main pipe 2 on car, conversely, move limit piece 510, unscrew fastening nut 508, can exhaust main pipe 2 be disassembled from car, realize quick dismounting, during long-term driving of car, even if being vibrated, limit piece 510 can also limit fastening bolt 506 and fastening nut 508, prevent fastening nut 508 loosening, improve the stability of exhaust main pipe 2 installation, when three-way catalytic converter 3 and muffler 4 are connected with exhaust main pipe 2, first connecting disc 601 is opposite to second connecting disc 603.Screw thread sleeve 604 on second connecting disc 603 is connected into screw thread groove 602 in first connecting disc 601 by screw thread, realize preliminary connection and certain degree sealing, insert opening 605 with connecting bolt 606, then with connecting nut 607 be connected in connecting bolt 606 outer wall by screw thread, further strengthen the connection between first connecting disc 601 and second connecting disc 603.

[0032] Finally, it should be noted that: the above only for preferred embodiment of the utility model has been described, and is not used to limit the utility model, although the utility model is described in detail with reference to the foregoing embodiment, for the person skilled in the art, it still can modify the technical scheme recorded in the foregoing each embodiment, or equivalent replacement to part of technical features, any modification, equivalent replacement, improvement etc. made within the spirit and principles of the utility model, should be included in the protection scope of the utility model.

Claims

1. An easy-to-maintain automobile exhaust pipe, comprising an exhaust manifold (1), a three-way catalytic converter (3), and a muffler (4), characterized in that: Each of the exhaust manifold (1), the three-way catalytic converter (3), and the muffler (4) is connected to an exhaust main pipe (2). A disassembly / assembly mechanism (5) is provided on the outer wall of the exhaust main pipe (2). A connection mechanism (6) is provided between the three-way catalytic converter (3) and the muffler (4) and the exhaust main pipe (2). The disassembly / assembly mechanism (5) includes a buffer frame (501) and a second fixing member (503). A first fixing member (502) is fixedly installed at the bottom of the buffer frame (501). A fastener (502) and a second fastener (503) are connected by a fastening bolt (506) and a fastening nut (508) through a through hole (505). A first rotating ring (511) and a second rotating ring (512) are connected to the outer walls of the fastening bolt (506) and the fastening nut (508) through a first rotating groove (507) and a second rotating groove (509), respectively. A limiting member (510) is fixedly connected between the first rotating ring (511) and the second rotating ring (512).

2. The automobile exhaust pipe that is easy to inspect and maintain according to claim 1, characterized in that: The inner walls of the first fixing member (502) and the second fixing member (503) are both fixedly installed with protective pads (504), and the protective pads (504) abut against the outer wall of the exhaust pipe (2).

3. The automobile exhaust pipe that is easy to inspect and maintain according to claim 2, characterized in that: The through hole (505) penetrates both sides of the first fixing member (502) and the second fixing member (503). The fastening bolt (506) is inserted into the inside of the through hole (505). The fastening nut (508) is threaded onto the outer wall of the fastening bolt (506). The first rotating groove (507) is formed on the upper outer wall of the fastening nut (508). The second rotating groove (509) is formed on the outer wall of the fastening nut (508).

4. The automobile exhaust pipe that is easy to inspect and maintain according to claim 3, characterized in that: The first rotating ring (511) is rotatably connected to the outer wall of the first rotating groove (507), the second rotating ring (512) is rotatably connected to the outer wall of the second rotating groove (509), and the limiting member (510) abuts against the outer walls of the first fixing member (502) and the second fixing member (503).

5. The automobile exhaust pipe that is easy to inspect and maintain according to claim 1, characterized in that: The connecting mechanism (6) includes a first connecting plate (601) and a second connecting plate (603). The first connecting plate (601) has a threaded groove (602) inside. The second connecting plate (603) has a threaded fitting (604) fixedly installed on the side opposite to the first connecting plate (601). The threaded fitting (604) is threadedly connected to the inside of the threaded groove (602).

6. The automobile exhaust pipe that is easy to inspect and maintain according to claim 5, characterized in that: Both the first connecting plate (601) and the second connecting plate (603) have through holes (605) near their edges. A connecting bolt (606) is inserted into the opening (605), and a connecting nut (607) is threaded onto the outer wall of the connecting bolt (606).

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