Exhaust system limiting device and vehicle

Abstract

The utility model relates to an exhaust system limiting device and a vehicle, and belongs to the technical field of automobile bodies, the exhaust system limiting device comprises a first elastic body, a first supporting bracket, a second elastic body, a second supporting bracket and a mounting bolt, the first supporting bracket is connected with a frame and is arranged on one side of the first elastic body, and the second supporting bracket is arranged on the other side of the second elastic body; the second elastic body is arranged on the side, away from the first elastic body, of the first supporting support, the second supporting support is connected to the exhaust system assembly and arranged on the side, away from the first supporting support, of the second elastic body, and the mounting bolt sequentially penetrates through the first elastic body, the first supporting support and the second elastic body and then is connected to the second supporting support. When the exhaust system assembly moves downwards or upwards, the first elastic body or the second elastic body is compressed and absorbs the force of the exhaust system assembly to limit the exhaust system assembly, and different damping and limiting effects can be achieved by compressing the two different elastic bodies.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile bodies, and in particular to an exhaust system limiting device and a vehicle. BACKGROUND

[0002] As an important means of transportation, automobiles play an irreplaceable role in people's daily life. An automobile generally comprises a chassis, a vehicle body, a power assembly, a control system and the like. In the prior art, a rubber hanger of an automobile exhaust system is used to connect the exhaust system and the vehicle body frame. The rubber hanger, while bearing the weight of the exhaust system, also has the functions of limiting, buffering and absorbing vibrations of the exhaust system, thereby improving the comfort of the vehicle.

[0003] At present, there are mainly two connection modes of the existing exhaust rubber hanger: one is that only one rubber hanger block is used, the two ends of the rubber hanger block are connected to the vehicle frame and the exhaust system respectively, an exhaust hanger connected to the exhaust system penetrates one end of the rubber hanger block, and an exhaust hanger connected to the vehicle frame penetrates the other end of the rubber hanger block; the other is that a metal frame is vulcanized around the rubber hanger block, the metal frame is connected to the vehicle frame by bolts, and the exhaust system penetrates the rubber hanger block through the exhaust hanger and is connected to the rubber hanger block.

[0004] However, in the above prior art, the vehicle body side and the exhaust side are connected by one rubber block. Although the rubber block can have the effect of buffering and absorbing vibrations of the exhaust system, it does not consider the problem of displacement in the up and down directions when buffering and absorbing vibrations of the exhaust system, which cannot solve the different displacement limiting requirements of the exhaust system in the real vehicle assembly state. CONTENT OF THE UTILITY MODEL

[0005] The utility model at least solves one of the technical problems in the related art to some extent.

[0006] Therefore, the present application aims to provide an exhaust system limiting device and a vehicle, which are intended to compress different elastic bodies when the connected exhaust system assembly is displaced up and down due to the movement of the vehicle, so as to achieve different displacement limitations. Thus, the technical problem that the same rubber block cannot limit displacement in the up and down directions in the prior art is solved.

[0007] To achieve the above-mentioned purpose, the utility model provides an exhaust system limiting device in the first aspect, which comprises:

[0008] a first elastic body;

[0009] a first support bracket for connecting to a vehicle frame, the first support bracket being arranged on one side of the first elastic body;

[0010] a second elastic body arranged on the side of the first support bracket away from the first elastic body;

[0011] A second support bracket for connecting to the exhaust system assembly, the second support bracket being disposed on a side of the second elastic body away from the first support bracket;

[0012] A mounting bolt, which is connected to the second support bracket in sequence through the first elastic body, the first support bracket and the second elastic body, one end of the mounting bolt being provided with a flange, the flange abutting the first elastic body;

[0013] When the exhaust system assembly moves up and down, the first elastic body or the second elastic body is compressed and absorbs the force of the exhaust system assembly, limiting the exhaust system assembly.

[0014] In the prior art, the exhaust rubber hanging connection mode can be composed of only one rubber hanging block, the two ends of the rubber hanging block are connected to the vehicle frame and the exhaust system respectively, the exhaust hook connected to the exhaust system passes through one end of the rubber hanging block, and the exhaust hanging connected to the vehicle frame passes through the other end of the rubber hanging block; two are to vulcanize a circle of metal frame around the rubber hanging block, the metal frame is connected to the vehicle frame through bolts, and the exhaust system passes through the rubber hanging block through the exhaust hook and is connected to the rubber hanging block, that is, both connection modes rely on a single rubber block to achieve buffering and vibration absorption. The above-mentioned scheme is used to put two different elastic bodies into the same assembly, so that different elastic bodies are compressed when the exhaust system moves up and down. Therefore, compared with the prior art, different displacement limits can be achieved by compressing different elastic bodies, and different displacement limiting requirements of the exhaust system in the real vehicle assembly state can be met. At the same time, through the design of the mounting bolt and the flange, the compression and rebound of the elastic body can be more accurately controlled, so that the exhaust system can move within the allowable range and excessive displacement can be avoided.

[0015] On this basis, the first support bracket and the second support bracket are respectively connected to the exhaust system assembly and the vehicle frame, and compared with the rubber hanging connection mode in the prior art, especially the design of only the rubber hanging block, the force distribution is more uniform and the stability is higher.

[0016] In addition, in the prior art, the rubber hanging connection mode is usually a fixed design, which has poor adaptability. The exhaust system limiting device in the present application can be adjusted according to different exhaust systems and vehicle frame structures, and has strong adaptability. Through the design of the mounting bolt, installation and disassembly are facilitated, and maintenance is more convenient. Through the combined design of the elastic body and the support bracket, vibration can be better dispersed and absorbed, fatigue damage of the rubber parts can be reduced, and durability can be improved.

[0017] In some embodiments of the present application, the mounting bolt further comprises a limiting ring;

[0018] The exhaust system limiting device further comprises a mounting nut, one end of the mounting nut is threadedly connected to the mounting bolt away from the flange, and the mounting nut and the limiting ring clamp the second support bracket to fix the relative position of the second support bracket on the mounting bolt.

[0019] In the technical scheme, the limiting ring and the mounting nut clamp the second support bracket, which can effectively fix the relative position of the second support bracket on the mounting bolt, prevent the support bracket from being deviated or loosened under vibration or external force, enhance the structural stability of the entire limiting device, better resist vibration and impact from the exhaust system, and reduce the risk of loosening.

[0020] In some embodiments of the present application, a second circular hole is formed in the second support bracket, and a threaded locking sleeve is embedded in the second circular hole to fix the relative position of the second support bracket on the mounting bolt through the threaded locking sleeve.

[0021] In the technical scheme, the threaded locking sleeve is arranged in the second circular hole formed in the second support bracket and is connected with the thread on the mounting bolt, so that the mounting nut is not needed to be welded, the welding process is reduced, the manufacturing cost is reduced, and the reliability of the connection is improved.

[0022] In some embodiments of the present application, a first circular hole is formed in the first support bracket, and the diameter of the first circular hole is greater than the diameter of the limiting ring.

[0023] A second circular hole is formed in the second support bracket, and the diameter of the limiting ring is greater than the diameter of the second circular hole.

[0024] The diameters of the middle holes of the first and second elastic bodies are greater than the diameter of the limiting ring, and the diameter of the middle hole of the first elastic body is less than the diameter of the flange of the mounting bolt.

[0025] In the technical scheme, the diameters of the second circular hole and the limiting ring are matched, so that the mounting bolt can accurately pass through the second support bracket and be clamped and fixed by the mounting nut and the limiting ring, and the installation precision is improved.

[0026] In addition, the diameter of the first circular hole is greater than the diameter of the limiting ring, so that the first support bracket can smoothly pass through the limiting ring, and the installation process is further simplified. Furthermore, the diameters of the middle holes of the first and second elastic bodies are designed to ensure that the elastic bodies can be penetrated by the mounting bolt during installation, and the flange abuts against the first elastic body to prevent the elastic body from falling off under vibration or external force, improve the reliability of the device, and reduce the maintenance requirement. Through reasonable matching of the diameters and the hole diameters, different sizes and shapes of elastic bodies, support brackets and mounting bolts can be adapted, and the device has strong universality and adaptability and can be widely applied to different exhaust systems and frame structures.

[0027] In addition, through the cooperation of the limiting ring and the mounting nut, the second support bracket is firmly fixed on the mounting bolt, avoiding the sliding or loosening of the support bracket under vibration or external force. The design of the flange abutting against the first elastic body further enhances the stability of the entire device, ensuring that the elastic body can uniformly distribute the load when stressed.

[0028] In some embodiments of the present application, the first elastic body and the second elastic body have different stiffness.

[0029] In the technical solution, the elastic bodies with different stiffness can realize different displacement amounts limited by different elastic bodies when the exhaust system assembly moves in different directions, which can significantly improve the overall damping performance of the exhaust system and improve the ride comfort.

[0030] In addition, by adjusting the stiffness of the elastic body, it can flexibly adapt to the needs of different vehicle models, different exhaust systems and different working conditions, making the limiting device have stronger universality and adaptability.

[0031] In some embodiments of the present application, the first elastic body and the second elastic body have different lengths along the bolt axis direction.

[0032] In the technical solution, by adjusting the length of the elastic body, the deformation amount when it is compressed can be accurately controlled, which can more accurately adapt to the movement requirements of the exhaust system in different directions, and different length elastic bodies can provide different limiting effects when the exhaust system assembly moves up and down.

[0033] In addition, different length elastic bodies can provide differential support force in different directions, ensuring that the movement of the exhaust system in the vertical direction is more stable.

[0034] In some embodiments of the present application, the first elastic body and the second elastic body are hollow structures, and the wall thickness or the size of the hollow part of the first elastic body and the second elastic body is different.

[0035] In the technical solution, by changing the wall thickness or the size of the hollow part, the stiffness of the elastic body can be flexibly adjusted to adapt to different application requirements, and the hollow structure can effectively absorb and disperse impact energy to improve the damping and buffering performance.

[0036] In some embodiments of the present application, the end surface area of the first support bracket is larger than the end surface area of the first elastic body close to the first support bracket.

[0037] In the technical scheme, the end surface of the first supporting bracket is designed to increase the contact area with the vehicle frame, better disperses the weight, reduces local stress concentration, and the larger supporting area enhances the connection stability between the exhaust system and the vehicle frame, reduces vibration and noise.

[0038] In some embodiments of the application, the end surface area of the second supporting bracket is greater than the end surface area of the second elastic body near the second supporting bracket.

[0039] In the technical scheme, the end surface of the second supporting bracket is designed to increase the contact area with the exhaust system assembly, better disperses the weight, reduces local stress concentration, and the larger supporting area enhances the connection stability between the exhaust system and the vehicle frame, reduces vibration and noise.

[0040] The second aspect of the utility model provides a kind of vehicle, comprising:

[0041] Vehicle frame;

[0042] Exhaust system assembly;

[0043] The limiting device as described above, the first supporting bracket and the second supporting bracket in the limiting device are connected with the exhaust system assembly and the vehicle frame respectively.

[0044] In the technical scheme, the new exhaust system limiting device can ensure that the exhaust system moves more stably when moving up and down, prevent the exhaust system from excessive displacement in extreme cases, thereby avoiding the exhaust system from falling off or being damaged, improving the protection effect of the vehicle during movement and improving the protection of the driver and passengers.

[0045] From the above technical scheme, the additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0046] Figure 1 It is the overall structure schematic view of the exhaust system limiting device according to the embodiment of the application;

[0047] Figure 2 It is the front view of the exhaust system limiting device according to the embodiment of the application;

[0048] Figure 3 It is the top view of the exhaust system limiting device according to the embodiment of the application;

[0049] Figure 4 It is the bottom view of the exhaust system limiting device according to the embodiment of the application;

[0050] Figure 5 It isFigure 2 A-A direction sectional view;

[0051] Figure 6 is the structure schematic view of the exhaust system limiting stopper mounting bolt according to the embodiment of the application;

[0052] Figure 7 is the structure schematic view of the exhaust system limiting stopper first elastic body according to the embodiment of the application;

[0053] Figure 8 is the structure schematic view of the exhaust system limiting stopper first support bracket according to the embodiment of the application;

[0054] Figure 9 is the structure schematic view of the exhaust system limiting stopper second elastic body according to the embodiment of the application;

[0055] Figure 10 is the structure schematic view of the exhaust system limiting stopper second support bracket according to the embodiment of the application;

[0056] Figure 11 is the partial structure schematic view of the vehicle according to the embodiment of the application.

[0057] In the above figures: 1, first elastic body; 2, first support bracket; 201, first round hole; 3, second elastic body; 4, second support bracket; 401, second round hole; 5, mounting nut; 6, mounting bolt; 601, flange; 602, limiting ring; 603, thread; 604, stud; 7, vehicle frame; 8, exhaust system assembly. DETAILED DESCRIPTION

[0058] In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0059] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection", "fixing" and the like should be understood in a broad sense, for example, can be fixed connection, or can be detachable connection, or can be integrated, or can be mechanical connection, or can be electrical connection or communication with each other; can be directly connected, or can be indirectly connected through an intermediate medium, or can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0060] In the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature. The first and second features can be in direct contact, or the first and second features can be in indirect contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0061] In the present application, the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0062] In the following, the present application will be specifically described by exemplary embodiments. However, it should be understood that the elements, structures and features in one embodiment can also be beneficially combined into other embodiments without further description.

[0063] In the present application, the vehicle includes a frame, an exhaust system assembly and a limiting device between the frame and the exhaust system assembly. The exhaust system assembly includes assembly parts such as catalytic converters or mufflers. The frame is located at the bottom of the vehicle between the front and rear axles of the vehicle and supports various components of the vehicle.

[0064] In the following, the embodiments of the present application will be described in detail with reference to the accompanying drawings.

[0065] With reference to all the drawings, in one illustrative embodiment of the exhaust system limiting device of the present application, the exhaust system limiting device comprises a first elastic body 1. In the vehicle, the first elastic body 1 is located on one side of the vehicle bottom close to the frame 7, and can be elastically deformed in different directions and degrees when the exhaust system is displaced.

[0066] In some embodiments, the exhaust system limiting device further comprises a first support bracket 2 for connecting with the frame 7. In the vehicle, the first support bracket 2 is located on the vehicle bottom and is installed on the frame 7 corresponding to the part of the exhaust system that needs to be supported and limited, thereby playing a role of linking the frame 7 and the related support structure of the exhaust system, and facilitating the stable connection of the frame 7.

[0067] In some embodiments, the exhaust system limiting device further comprises a second elastic body 3 arranged on the side of the first support bracket 2 away from the first elastic body. In the vehicle, the second elastic body 3 is located on one side of the vehicle bottom close to the exhaust system assembly 8.

[0068] On the one hand, during the driving of the vehicle, under the condition that the height of the vehicle bottom is relatively fixed, the exhaust system will vibrate due to engine vibration, road bumps and other factors. The second elastic body 3 can play a buffering role to absorb and weaken these vibrations, reduce the impact of vibrations on the exhaust system assembly 8 and surrounding components, avoid parts loosening, wear and even damage due to long-term vibration, and prolong the service life of the exhaust system and other related components.

[0069] On the other hand, the second elastic body 3 provides an elastic support force for the exhaust system assembly 8, which cooperates with the second support bracket 4 to enable the exhaust system to adapt to the dynamic changes of the vehicle to a certain extent while maintaining a relatively fixed position. This elastic support can be automatically adjusted according to the stress condition of the exhaust system, ensuring that the exhaust system remains stable under various working conditions and ensuring the normal operation and performance of the exhaust system.

[0070] In some embodiments, the exhaust system limiting device further comprises a second support bracket 4 for connecting to the exhaust system assembly, the second support bracket 4 being arranged on the side of the second elastic body 3 away from the first support bracket 2. In the vehicle, the second support bracket 4 is located below the vehicle chassis and connects the exhaust system assembly 8, and is located around components in the exhaust system that have a large mass and are prone to displacement, such as mufflers and catalytic converters, thereby bearing part of the weight of the exhaust system assembly 8, reducing the pressure on the suspension components of the exhaust system, stabilizing the position of the exhaust system, and ensuring the normal operation of the exhaust system.

[0071] In some embodiments, the exhaust system limiting device further comprises a mounting bolt 6, which is sequentially connected to the first elastic body 1, the first support bracket 2, the second elastic body 3, and then connected to the second support bracket 4, and one end of the mounting bolt 6 is provided with a flange 601 abutting against the first elastic body 1. On the vehicle, the mounting bolt is located at the center connecting position of the exhaust system support structure at the bottom of the vehicle, and plays a core role in connecting and fixing various components, so that the support and limiting device of the entire exhaust system forms an integral whole.

[0072] In some embodiments, when the exhaust system assembly 8 moves up and down, the first elastic body 1 or the second elastic body 3 is compressed and absorbs the force of the exhaust system assembly 8 to limit the exhaust system assembly 8.

[0073] When the exhaust system assembly 8 moves downward along the vertical direction of the vehicle, the first elastic body 1 is compressed and absorbs the force of the exhaust system assembly 8 to limit the exhaust system assembly 8; when the exhaust system assembly 8 moves upward along the vertical direction of the vehicle, the second elastic body 3 is compressed and absorbs the force of the exhaust system assembly 8 to limit the exhaust system assembly 8. By compressing different elastic bodies according to the different directions of the exhaust system assembly 8, elastic deformation in different directions and degrees is achieved.

[0074] In the prior art, the exhaust rubber hanging connection mode can be composed of only one rubber hanging block, the two ends of the rubber hanging block are connected to the vehicle frame and the exhaust system respectively, the exhaust hook connected to the exhaust system passes through one end of the rubber hanging block, and the exhaust hanging connected to the vehicle frame passes through the other end of the rubber hanging block; two are a circle of metal frame vulcanized around the rubber hanging block, the metal frame is connected to the vehicle frame by bolts, and the exhaust system passes through the rubber hanging block through the exhaust hook and is connected to the rubber hanging block, that is, both connection modes rely on a single rubber block to achieve buffering and vibration absorption. By the above scheme, two different elastic bodies are placed in the same assembly, so that different elastic bodies are compressed when the exhaust system moves up and down. Therefore, compared with the prior art, different displacement limits can be achieved by compressing different elastic bodies, and different displacement limiting requirements of the exhaust system in the real vehicle assembly state can be met. At the same time, through the design of the mounting bolt 6 and the flange 601, the compression and rebound of the elastic body can be more accurately controlled, so that the exhaust system can move within the allowable range and excessive displacement is avoided.

[0075] Above that, the first support bracket 2 and the second support bracket 4 are connected to the vehicle frame 7 and the exhaust system assembly 8 respectively, and compared with the rubber hanging connection mode in the prior art, especially the design of only the rubber hanging block, the force distribution is more uniform and the stability is higher.

[0076] In addition, in the prior art, the rubber suspension connection method is usually fixed in design and has poor adaptability. The limiting device in the present application can be adjusted according to different exhaust systems and frame structures, and has strong adaptability. Through the design of the mounting bolt 6, installation and disassembly are facilitated, and maintenance is more convenient. Through the combined design of the elastic body and the supporting bracket, vibrations can be better dispersed and absorbed, fatigue damage of the rubber components is reduced, and durability is improved.

[0077] Please refer to Figure 6 In some embodiments, the mounting bolt 6 also includes a threaded portion 603 disposed at the end of the mounting bolt 6 away from the flange 601, for allowing the mounting bolt 6 to be screwed into a nut or threaded hole, thereby achieving fastening connection.

[0078] In some embodiments, the mounting bolt 6 also includes a threaded portion 603 disposed at the end of the mounting bolt 6 away from the flange 601, for allowing the mounting bolt 6 to be screwed into a nut or threaded hole, thereby achieving fastening connection.

[0079] In some embodiments, the mounting bolt 6 also includes a limiting ring 602 disposed on one side of the threaded portion 603, for limiting the insertion depth of the mounting bolt 6, preventing the mounting bolt 6 from being screwed in or out excessively, and providing additional support and stability to ensure that the mounting bolt 6 remains in the correct position after installation.

[0080] In some embodiments, the exhaust system limiting device also includes a mounting nut 5 connected to the end of the mounting bolt 6 away from the flange 601 through the threaded portion 603, the mounting nut 5 and the limiting ring 602 clamping the second supporting bracket 4 to fix the relative position of the second supporting bracket 4 on the mounting bolt 6, enhancing the structural stability of the entire limiting device.

[0081] In some embodiments, after the mounting nut 5 is connected to the mounting bolt 6 through the threaded portion 603, the second supporting bracket 4 is clamped by the limiting ring 602, and the mounting nut 5 is welded to the second supporting bracket 4, the joint between the mounting nut 5 and the second supporting bracket 4 can be welded manually from the outside by spot welding. By connecting through multiple processes, the connection strength of the mounting bolt 6 and the second supporting bracket 4 is further improved, thereby improving the structural strength of the limiting device.

[0082] In some embodiments, the second supporting bracket 4 has a second circular hole 401 formed therein, and a threaded locking sleeve is embedded in the second circular hole 401, for fixing the relative position of the second supporting bracket 4 on the mounting bolt 6 through the threaded locking sleeve, without the need for additional welding of the mounting nut, reducing the welding process and manufacturing cost, while improving the reliability of the connection.

[0083] Please refer to Figures 5 to 10As shown, in some embodiments, a first circular hole 201 is formed on the first support bracket 2, and the diameter of the first circular hole 201 is greater than the diameter of the limiting ring 602, for installing the mounting bolt 6. When installed, the first support bracket 2 passes through the limiting ring 602;

[0084] A second circular hole 401 is formed on the second support bracket 4, and the diameter of the limiting ring 602 is greater than the diameter of the second circular hole 401, for cooperating with the threaded portion 603 and the mounting nut 5 to fixedly connect the mounting bolt 6 to the second support bracket 4;

[0085] The middle hole diameters of the first elastic body 1 and the second elastic body 3 are both greater than the diameter of the limiting ring 602, and the middle hole diameter of the first elastic body 1 is smaller than the diameter of the flange 601 of the mounting bolt 6, for enabling the stud 604 of the mounting bolt 6 to pass through the first elastic body 1 and the second elastic body 3 when the mounting bolt 6 is installed, and abutting against the first elastic body 1 through the flange 601;

[0086] Through the diameter cooperation design of the second circular hole 401 and the limiting ring 602, it is ensured that the mounting bolt 6 can accurately pass through the second support bracket and be clamped and fixed through the mounting nut 5 and the limiting ring 602, improving the installation precision and further simplifying the installation process.

[0087] In some embodiments, the stiffness of the first elastic body 1 and the second elastic body 3 is different, so as to realize that when the exhaust system assembly 8 moves in different directions, the displacement limited by different elastic bodies is different, and the elastic bodies with different stiffnesses can provide customized damping effect for vibration in different directions, which can significantly improve the overall damping performance of the exhaust system and improve the ride comfort. In addition, by adjusting the stiffness of the elastic body, different vehicle models, different exhaust systems and different working conditions can be flexibly adapted to, so that the limiting device has stronger universality and adaptability.

[0088] In some embodiments, the compression amount of the first elastic body 1 and the second elastic body 3 can also be adjusted through the length of the stud 604 in the mounting bolt 6. By changing the length of the stud 604, the compression amount of the elastic body can be accurately controlled, so as to adjust its stiffness and buffering performance, adapt to different loads and working conditions, and through the adjustment of the compression amount, the performance of the elastic body can be optimized, so that it can provide the best damping and supporting effect under different conditions.

[0089] In some embodiments, the lengths of the first elastic body 1 and the second elastic body 3 in the direction of the bolt axis are different, so as to adjust the compression amount by adjusting the length of the elastic body. By adjusting the length of the elastic body, the deformation amount thereof when compressed can be accurately controlled, the movement requirements of the exhaust system assembly 8 in different directions can be more accurately adapted, and different lengths of the elastic body can provide different limiting effects when the exhaust system assembly 8 moves upward and downward. In addition, different lengths of the elastic body can provide differentiated support forces in different directions, so as to ensure that the movement of the exhaust system assembly 8 in the vertical direction is more stable.

[0090] For reference Figure 7 and Figure 9 In some embodiments, the first elastic body 1 and the second elastic body 3 are hollow structures, and the wall thicknesses or sizes of the hollow portions of the first elastic body 1 and the second elastic body 3 are different. The rigidity of the elastic body can be adjusted by adjusting the wall thickness or size of the hollow portion of the elastic body, so as to adapt to different application requirements, and the hollow structure can effectively absorb and disperse impact energy, thereby improving the shock absorption and buffering performance.

[0091] In some embodiments, the specific shape of the first elastic body 1 and the second elastic body 3 can be cylindrical, square, prismatic, etc.

[0092] For reference Figure 8 In some embodiments, the end surface area of the first support bracket 2 is greater than the end surface area of the first elastic body 1 close to the first support bracket 2. The end surface design of the first support bracket 2 increases the contact area with the vehicle frame 7, better disperses the weight, reduces local stress concentration, and the larger support area enhances the connection stability between the exhaust system assembly 8 and the vehicle frame 7, thereby reducing vibration and noise.

[0093] For reference Figure 10 In some embodiments, the end surface area of the second support bracket 4 is greater than the end surface area of the second elastic body 3 close to the second support bracket 4. The end surface design of the second support bracket 4 increases the contact area with the exhaust system assembly 8, better disperses the weight, reduces local stress concentration, and the larger support area enhances the connection stability between the exhaust system assembly 8 and the vehicle frame 7, thereby reducing vibration and noise.

[0094] It is worth noting that the specific shape of the first support bracket 2 and the second support bracket 4 can be a flat plate shape, etc.

[0095] In some embodiments, in order to meet the requirements of stable connection between components, facilitate production and installation, avoid interference, and size tolerance, the components in the exhaust system limiting device can have certain bending, bending, flanging, chamfering, rounding, etc.

[0096] For referenceFigure 11 In addition, the application also provides a vehicle, which comprises a vehicle frame 7, an exhaust system assembly 8, and an exhaust system limiting device arranged between the vehicle frame 7 and the exhaust system assembly 8.

[0097] In some embodiments, the exhaust system assembly 8 comprises assembly parts such as a catalytic converter or a muffler, and the vehicle frame is arranged at the bottom of the vehicle, between the front and rear axles of the vehicle, and supports various components of the vehicle, which are all conventional technical means in the art and will not be described here.

[0098] In some embodiments, the second support bracket 4 is welded to the exhaust system assembly 8, and workers can weld the second support bracket 4 to the assembly parts such as the catalytic converter or the muffler at the welding points by spot welding, so as to ensure the firmness of the connection.

[0099] Compared with the prior art, the exhaust system limiting device in the application puts two different elastic bodies into the same assembly, so that different elastic bodies are compressed when the exhaust system is displaced upward and downward, and different displacement limits can be achieved by compressing different elastic bodies. Compared with the prior art, the different displacement limits of the exhaust system in the real vehicle assembly state can be met. At the same time, through the design of the mounting bolt 6 and the flange 601, the compression and rebound of the elastic body can be more accurately controlled, so that the exhaust system can move within the allowable range and excessive displacement is avoided.

[0100] And the first support bracket 2 and the second support bracket 4 are connected to the vehicle frame 7 and the exhaust system assembly 8, respectively. Compared with the rubber hanging connection method in the prior art, especially the design of the rubber hanging block, the force distribution is more uniform and the stability is higher.

[0101] Compared with the prior art, the vehicle of the application can ensure that the movement of the exhaust system in the vertical direction of the vehicle is more stable through the new exhaust system limiting device, prevent the exhaust system from excessive displacement in extreme cases, so as to avoid the exhaust system from falling off or being damaged, improve the protection effect of the vehicle during movement, and improve the protection of the driver and passengers.

[0102] Although the embodiments of the application have been shown and described above, it should be understood that the above embodiments are exemplary and should not be construed as limiting the application. Those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the application.

Claims

1. An exhaust system limiting device characterized by, It comprises: A first elastic body (1); A first support bracket (2) for connecting to a vehicle frame (7), the first support bracket (2) is arranged on one side of the first elastic body; A second elastic body (3) arranged on the side of the first support bracket (2) away from the first elastic body (1); A second support bracket (4) for connecting to an exhaust system assembly (8), the second support bracket (4) is arranged on the side of the second elastic body (3) away from the first support bracket (2); A mounting bolt (6) sequentially penetrating the first elastic body (1), the first support bracket (2), the second elastic body (3), and then connected to the second support bracket (4), one end of the mounting bolt (6) is provided with a flange (601), and the flange (601) abuts against the first elastic body (1); When the exhaust system assembly (8) moves up and down, the first elastic body (1) or the second elastic body (3) is compressed and absorbs the force of the exhaust system assembly (8), and the exhaust system assembly (8) is limited.

2. The exhaust system limiting device of claim 1, wherein The mounting bolt (6) further comprises a limiting ring (602); The limiting device further comprises a mounting nut (5), the mounting nut (5) is connected to the end of the mounting bolt (6) away from the flange (601) through a thread (603), and the mounting nut (5) and the limiting ring (602) clamp the second support bracket (4) to fix the relative position of the second support bracket (4) on the mounting bolt (6).

3. The exhaust system limiting device of claim 1, wherein, A second circular hole (401) is formed on the second support bracket (4), and a threaded locking sleeve is embedded in the second circular hole (401), which is used to fix the relative position of the second support bracket (4) on the mounting bolt (6) through the threaded locking sleeve.

4. The exhaust system restraint of claim 2, wherein A first circular hole (201) is formed on the first support bracket (2), and the diameter of the first circular hole (201) is greater than the diameter of the limiting ring (602); A second circular hole (401) is formed on the second support bracket (4), and the diameter of the limiting ring (602) is greater than the diameter of the second circular hole (401); The diameters of the middle holes of the first elastic body (1) and the second elastic body (3) are greater than the diameter of the limiting ring (602), and the diameter of the middle hole of the first elastic body (1) is less than the diameter of the flange (601) of the mounting bolt (6).

5. The exhaust system restraint of claim 1, wherein The first elastic body (1) and the second elastic body (3) have different stiffnesses.

6. The exhaust system restraint of claim 1, wherein The first elastic body (1) and the second elastic body (3) have different lengths along the axis direction of the mounting bolt (6).

7. The exhaust system restraint of claim 1, wherein The first elastic body (1) and the second elastic body (3) are hollow structures, and the wall thicknesses or the sizes of the hollow parts of the first elastic body (1) and the second elastic body (3) are different.

8. The exhaust system restraint of claim 1, wherein, The end surface area of the first support bracket (2) is greater than the end surface area of the first elastic body (1) close to the first support bracket (2).

9. The exhaust system restraint of claim 1, wherein, The end surface area of the second support bracket (4) is greater than the end surface area of the second elastic body (3) close to the second support bracket (4).

10. A vehicle characterized by comprising: It comprises: A vehicle frame (7); Exhaust system assembly (8); The exhaust system limiting device according to claim 1 or 8, wherein the first support bracket (2) and the second support bracket (4) are connected with the exhaust system assembly (8) and the vehicle frame (7) respectively.

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