A muffler support structure for a heavy truck

Abstract

The utility model relates to the technical field of muffler, concretely is a kind of muffler support structure of heavy truck, include: vehicle body support, its one side is equipped with a plurality of mounting holes, the other side is provided with three support blocks, middle support block both sides are fixed with another two support blocks by connecting plate, and another two support blocks other side is fixed with vehicle body support. Every support block is equipped with a pair of arc clamping blocks on the side away from vehicle body support, and there is arc support block in the inside of clamping block, and damping pad is fixed on the opposite side of clamping block and support block, and opposite side is connected drive assembly, for synchronously approaching or moving away. The structure is synchronously controlled clamping unit by drive mechanism, simplifies operation step, reduces dismounting time;Damping pad absorbs vibration noise, and adapts temperature deformation, avoids excessive stress;Overall structure is fixed in multiple points synchronously, and support is stable and reliable, reduces installation maintenance difficulty, improves efficiency.

Description

Technical Field

[0001] This utility model relates to the field of muffler technology, specifically a muffler bracket structure for heavy-duty trucks. Background Technology

[0002] Heavy-duty trucks are the core equipment for long-distance freight transportation. Their high-power diesel engines generate strong exhaust noise and vibration during operation. In order to meet increasingly stringent environmental standards and improve driving and road comfort, a special muffler needs to be installed in the exhaust system to effectively suppress exhaust noise and participate in the exhaust gas purification process. Given the large size and weight of the muffler itself, it must be securely installed on the vehicle body through a corresponding bracket structure to ensure its functionality and durability.

[0003] In the existing technology, the mufflers used in heavy-duty trucks are usually cylindrical structures. One end of the muffler is connected to the engine exhaust manifold or the pre-catalytic converter, and the other end is connected to the tail section of the exhaust pipe. Finally, the treated exhaust gas is discharged into the atmosphere through the tailpipe. Currently, these mufflers are mostly fixed with clamp-type brackets. In specific operation, the muffler is first placed in the arc-shaped groove of one clamp, and then the other clamp is fastened to the former with several bolts, so that the muffler is firmly clamped in the annular space formed by the two. Subsequently, the clamp assembly is connected to the bracket installed on the vehicle body with bolts, thereby completing the installation and support of the muffler.

[0004] However, due to the long axial dimension of heavy truck mufflers, multiple clamp brackets are usually required for multi-point fixation along their axis during actual installation. This results in the need to repeatedly tighten multiple sets of bolts during installation, and disassemble them one by one during subsequent maintenance or replacement. The operation process is repetitive and cumbersome, which not only increases the labor intensity of the operators, but also restricts the overall installation and maintenance efficiency, making it difficult for vehicles to be put into operation or maintained quickly. Therefore, this utility model proposes a muffler bracket structure for heavy trucks to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a muffler bracket structure for heavy-duty trucks to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a muffler bracket structure for a heavy-duty truck, comprising: a body bracket, wherein a plurality of mounting holes are provided on one side of the body bracket along its length direction, and three support blocks arranged in a linear array are provided on the other side of the body bracket along its length direction. The two sides of the middle support block are fixedly connected to one side of the other two support blocks via connecting plates, and the other sides of the other two support blocks are fixedly connected to the vehicle body bracket. Each support block has a pair of arc-shaped locking blocks on the side away from the vehicle frame, and an arc-shaped support block on the side of the arc-shaped locking blocks closest to the support block. Both the curved locking block and the curved support block have shock-absorbing pads fixedly connected to their opposite sides, and both the curved locking block and the curved support block have drive components connected to their opposing sides. The drive components are used to drive the curved locking block and the curved support block to move synchronously closer or further away along their axis. Preferably, a guide sleeve is fixedly fitted inside the middle support block, and guide holes are opened on the other two end support blocks.

[0007] Preferably, the drive assembly includes a connecting block fixedly connected to the side of each arc-shaped support block away from the shock-absorbing pad, a connecting rod rotatably connected to both sides of the connecting block, an arc-shaped frame rotatably connected to the connecting rod, a connecting column fixedly connected to the side of the connecting block away from the arc-shaped support block, a drive rod threadedly connected to the guide sleeve and rotatably connected to the middle connecting column, and a guide column slidably sleeved on the support blocks at both ends and fixedly connected to the connecting columns at both ends.

[0008] Preferably, the connecting block is fixedly connected between the connecting column and the arc-shaped support block, one end of the connecting rod is rotatably connected to the connecting block via a pin, the other end of the connecting rod is rotatably connected to the arc-shaped frame via a pin, one end of the arc-shaped frame is rotatably connected to the support block via a pin, and the other end of the arc-shaped frame is fixedly connected to the side of the arc-shaped clamp block away from the shock-absorbing pad.

[0009] Preferably, the two sides of the outer ring surface of the middle connecting column are fixedly connected to the connecting columns at both ends by transmission rods, and the middle connecting column is fixedly connected to the drive rod by a limit bearing.

[0010] Compared with the prior art, the beneficial effects of this utility model are: A single drive mechanism can simultaneously control the tightening or loosening of multiple clamping units, enabling rapid installation, fixing, or disassembly of the muffler without the need for repeatedly tightening multiple bolts, greatly simplifying the operation. The clamping area is equipped with flexible shock-absorbing pads, which can effectively absorb vibrations and noise during vehicle operation and adapt to the slight deformation of the muffler caused by temperature changes, avoiding excessive installation stress. The overall structure achieves multi-point, synchronous, and flexible fixing of long mufflers, significantly reducing the difficulty of installation and maintenance and improving work efficiency while ensuring stable and reliable support. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a top view of the overall structure of this utility model; Figure 3 This is a bottom view of the overall structure of this utility model; Figure 4 This is a schematic diagram of the internal structure of this utility model.

[0012] In the diagram: 1. Body bracket; 2. Mounting hole; 3. Support block; 4. Connecting plate; 5. Arc-shaped locking block; 6. Arc-shaped support block; 7. Shock-absorbing pad; 8. Guide sleeve; 9. Guide hole; 10. Connecting block; 11. Connecting rod; 12. Arc-shaped frame; 13. Connecting column; 14. Drive rod; 15. Guide column; 16. Transmission rod; 17. Limit bearing. Detailed Implementation

[0013] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit the embodiments of this utility model. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0014] Please see Figures 1 to 4 This utility model provides a technical solution: a muffler bracket structure for a heavy-duty truck, comprising: a body bracket 1, with multiple mounting holes 2 on one side along its length, and three support blocks 3 arranged in a linear array on the other side along its length. The body bracket 1 is fixedly connected to the vehicle body and can be fixedly connected to the chassis, longitudinal beams, or subframe by bolts engaging with the mounting holes 2. The two sides of the middle support block 3 are respectively fixedly connected to one side of the other two support blocks 3 via connecting plates 4. The other side of each support block 3 is fixedly connected to the vehicle body bracket 1, thereby fixing and supporting the three support blocks 3 through the vehicle body bracket 1. Each support block 3 has a pair of arc-shaped locking blocks 5 on the side away from the vehicle body bracket 1, and an arc-shaped support block 6 on the side of the arc-shaped locking block 5 close to the support block 3. Shock-absorbing pads 7 are fixedly connected to the opposite sides of the arc-shaped locking blocks 5 and the arc-shaped support blocks 6. A drive component is connected to the opposite sides of the arc-shaped locking blocks 5 and the arc-shaped support blocks 6. The drive component is used to drive the arc-shaped locking blocks 5 and the arc-shaped support blocks 6 to move closer or further away from each other along their axis.

[0015] In use, the muffler is first placed at the axial position of the arc-shaped clamp 5 and the arc-shaped support block 6. At this time, the arc-shaped clamp 5 and the arc-shaped support block 6 are in the open state. Driven by the drive component, the arc-shaped clamp 5 and the arc-shaped support block 6 move synchronously in the direction of their common axis until the shock-absorbing pad 7, which is fixedly connected to one side of the arc-shaped support block 6 and the arc-shaped clamp 5, tightly abuts against the outer wall of the muffler. This indirectly clamps and fixes the muffler to one side of the vehicle body bracket 1 from different positions. Then, it is bolted to the vehicle body through several mounting holes 2 opened on the other side of the vehicle body bracket 1. The muffler is fixed in place and then fixedly supported on the vehicle body. When the muffler needs to be removed, the drive component can be reversed to release the limiting support of the arc-shaped locking block 5 and arc-shaped support block 6 on the muffler, which facilitates subsequent maintenance and repair. The damping pad 7 is made of high-temperature resistant silicone rubber, fluororubber or ceramic fiber composite elastic material. It can effectively buffer and absorb the mechanical vibration transmitted by the muffler and the vehicle body, prevent resonance, reduce noise, and can also use its elastic deformation to compensate for the slight dimensional changes of the muffler caused by thermal expansion and contraction, so as to avoid excessive assembly stress.

[0016] A guide sleeve 8 is fixedly fitted inside the middle support block 3, and guide holes 9 are opened on the other two end support blocks 3. The guide sleeve 8 and the guide holes 9 are both located at the center of the support block 3. The drive assembly includes a connecting block 10 fixedly connected to the side of each arc-shaped support block 6 away from the shock-absorbing pad 7, a connecting rod 11 rotatably connected to both sides of the connecting block 10, an arc-shaped frame 12 rotatably connected to the connecting rod 11, a connecting column 13 fixedly connected to the side of the connecting block 10 away from the arc-shaped support block 6, a drive rod 14 threadedly fitted with the guide sleeve 8 and rotatably connected to the middle connecting column 13, and a slidably fitted on the two end support blocks 3 and connected to both end support blocks 3. The connecting column 13 is fixedly connected to the guide column 15. The connecting block 10 is fixedly connected between the connecting column 13 and the arc-shaped support block 6. One end of the connecting rod 11 is rotatably connected to the connecting block 10 via a pin, and the other end of the connecting rod 11 is rotatably connected to the arc-shaped frame 12 via a pin. One end of the arc-shaped frame 12 is rotatably connected to the support block 3 via a pin, and the other end of the arc-shaped clamping block 5 is fixedly connected to the side away from the shock-absorbing pad 7. The two sides of the outer ring surface of the intermediate connecting column 13 are fixedly connected to the connecting columns 13 at both ends via transmission rods 16. The intermediate connecting column 13 is fixedly connected to the drive rod 14 via a limit bearing 17. The limit bearing 17 adopts an installation method of inner ring rotation and outer ring fixation.

[0017] After the muffler is initially positioned at the common axis position of the arc-shaped locking block 5 and the arc-shaped support block 6, the drive rod 14 is twisted. Due to the threaded engagement between the drive rod 14 and the guide sleeve 8, the drive rod 14 can move towards the support block 3. Under the connection of the limit bearing 17, it pushes the connecting column 13 in the middle position to move synchronously. The outer ring of the connecting column 13 in the middle position is fixedly connected to the connecting columns 13 on both sides through the transmission rod 16. The connecting columns 13 on both sides move under the cooperation of the guide hole 9 and the guide column 15, so that the three connecting columns 13 are pushed synchronously. The connecting columns 13 then drive the connecting block 10 to move. 10 drives the arc-shaped support block 6 to move towards its axis. At the same time, with the cooperation of the connecting rod 11 and the pin, the arc-shaped frames 12 on both sides of the connecting block 10 move towards each other. One end of the arc-shaped frame 12 is limited on the connecting block 10, and the other end of the arc-shaped frame 12 drives the arc-shaped locking block 5 to move towards its axis. Then, the three sets of arc-shaped support blocks 6 and arc-shaped locking blocks 5 move synchronously until the shock-absorbing pad 7 abuts against the outer ring surface of the muffler, thereby supporting and fixing the muffler at different positions. When disassembly and maintenance are required, the limiting support of the muffler can be indirectly and quickly released by twisting the drive rod 14 in the opposite direction, which is convenient for later maintenance.

[0018] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A muffler bracket structure for a heavy-duty truck, comprising a body bracket (1), characterized in that: The vehicle body bracket (1) has multiple mounting holes (2) on one side along its length direction, and three support blocks (3) arranged in a linear array on the other side along its length direction. The two sides of the middle support block (3) are respectively fixedly connected to one side of the other two support blocks (3) through connecting plates (4), and the other sides of the other two support blocks (3) are fixedly connected to the vehicle body bracket (1). Each of the support blocks (3) is provided with a pair of arc-shaped locking blocks (5) on the side away from the vehicle frame (1), and an arc-shaped support block (6) is provided on the side of the arc-shaped locking block (5) close to the support block (3). Shock-absorbing pads (7) are fixedly connected to the opposite sides of the arc-shaped card block (5) and the arc-shaped support block (6), and driving components are connected to the opposite sides of the arc-shaped card block (5) and the arc-shaped support block (6). The driving components are used to drive the arc-shaped card block (5) and the arc-shaped support block (6) to move closer or further away from each other along their axes.

2. The muffler bracket structure for a heavy-duty truck according to claim 1, characterized in that: A guide sleeve (8) is fixedly fitted inside the middle support block (3), and guide holes (9) are opened on the support blocks (3) at the other two ends.

3. The muffler bracket structure for a heavy-duty truck according to claim 2, characterized in that: The drive assembly includes a connecting block (10) fixedly connected to the side of each arc-shaped support block (6) away from the shock-absorbing pad (7), a connecting rod (11) rotatably connected to both sides of the connecting block (10), an arc-shaped frame (12) rotatably connected to the connecting rod (11), a connecting column (13) fixedly connected to the side of the connecting block (10) away from the arc-shaped support block (6), a drive rod (14) threadedly connected to the guide sleeve (8) and rotatably connected to the connecting column (13) located in the middle, and a guide column (15) slidably sleeved on the support blocks (3) at both ends and fixedly connected to the connecting columns (13) at both ends.

4. The muffler bracket structure for a heavy-duty truck according to claim 3, characterized in that: The connecting block (10) is fixedly connected between the connecting column (13) and the arc-shaped support block (6). One end of the connecting rod (11) is rotatably connected to the connecting block (10) through a pin, and the other end of the connecting rod (11) is rotatably connected to the arc-shaped frame (12) through a pin. One end of the arc-shaped frame (12) is rotatably connected to the support block (3) through a pin, and the other end of the arc-shaped frame (12) is fixedly connected to the side of the arc-shaped clamping block (5) away from the shock-absorbing pad (7).

5. The muffler bracket structure for a heavy-duty truck according to claim 4, characterized in that: The connecting column (13) located on both sides of the outer ring surface of the middle connecting column (13) is fixedly connected to the connecting columns (13) located at both ends through transmission rods (16), and the connecting column (13) located in the middle is fixedly connected to the drive rod (14) through a limit bearing (17).

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