Cab rear suspension assembly

Abstract

The utility model relates to the technical field of locomotive accessories, and provides a cab rear suspension assembly. The cab rear suspension assembly comprises a rear suspension support, a locking piece and a shock absorber, the rear suspension support is provided with a limiting hole, and the limiting hole is provided with an exhaust pipe; the locking piece is arranged on the rear suspension support and used for being switched between a first position and a second position, and the locking piece and the cab are locked at the first position; at the second position, the locking piece is separated from the cab; the shock absorber is arranged between the rear suspension support and the locking piece. According to the cab rear suspension assembly integrated with the exhaust pipe, the defect that the exhaust pipe is difficult to arrange in the cab rear suspension assembly in the prior art is overcome, the exhaust pipe can be installed at the same time when the cab rear suspension assembly integrated with the exhaust pipe is installed, and inconvenience caused by the fact that the exhaust pipe needs to be additionally installed is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of locomotive accessories, in particular to a cab rear suspension assembly. Background Art

[0002] As society develops, the demand for transportation continues to grow. Consequently, there is a growing demand for high-horsepower and lightweight commercial vehicles. However, with the use of high-horsepower engines and short cabs, the layout of components surrounding the rear cab suspension has become a challenge in the overall layout of commercial vehicles.

[0003] For commercial vehicles with long cabs, there's more space between the engine and the cab's rear suspension assembly, making exhaust piping routing relatively simple. For short cabs, if the engine supercharger is positioned upright, the supercharger exhaust port faces the cab's rear suspension assembly. However, if the supercharger is positioned inverted, the space under the cab must be considered, making routing more challenging. Utility Model Content

[0004] The utility model provides a cab rear suspension assembly, which is used to solve the defect in the prior art that the cab rear suspension assembly is difficult to arrange the exhaust pipe, and realizes a cab rear suspension assembly with an integrated exhaust pipe. When installing the cab rear suspension assembly, the exhaust pipe can be installed at the same time, avoiding the inconvenience of having to install the exhaust pipe separately.

[0005] The utility model provides a cab rear suspension assembly, comprising a rear suspension bracket, a locking member and a shock absorber, wherein the rear suspension bracket is provided with a limiting hole, and the limiting hole is provided with an exhaust pipe; the locking member is provided on the rear suspension bracket, and is used to switch between a first position and a second position, in which the locking member is locked with the cab; in the second position, the locking member is separated from the cab; the shock absorber is provided between the rear suspension bracket and the locking member.

[0006] According to the cab rear suspension assembly provided by the utility model, the exhaust pipe is detachably arranged in the limiting hole.

[0007] According to a cab rear suspension assembly provided by the utility model, a first mounting hole is provided at one end of the rear suspension bracket, and a second mounting hole is provided at the other end. The first mounting hole and the second mounting hole are both used for the installation of the rear suspension bracket, and the exhaust pipe is located between the first mounting hole and the second mounting hole.

[0008] According to a cab rear suspension assembly provided by the utility model, a locking member connecting hole is provided between the exhaust pipe and the first mounting hole, and the locking member connecting hole is used to be connected to the locking member.

[0009] According to a cab rear suspension assembly provided by the utility model, at least two shock absorber connecting seats are provided between the exhaust pipe and the second mounting hole, the two shock absorber connecting seats are arranged at intervals, and the shock absorber connecting seats are used to connect the shock absorbers.

[0010] According to a cab rear suspension assembly provided by the utility model, the shock absorber connecting seat is provided with a shock absorber connecting hole, one end of the shock absorber passes through the shock absorber connecting hole and is rotatably connected to the shock absorber connecting hole.

[0011] According to a cab rear suspension assembly provided by the utility model, the locking member includes two locking hooks, the two locking hooks are arranged at intervals, and the first ends of the two locking hooks are connected by a locking tongue connecting shaft, the locking tongue connecting shaft is rotatably arranged in the locking member connecting hole, and the second ends of the two locking hooks are provided with a locking tongue connecting hole.

[0012] According to a cab rear suspension assembly provided by the utility model, the second end of the locking hook is further provided with a limiting notch, and the limiting notch is located on the opposite side of the locking tongue connecting hole.

[0013] According to a cab rear suspension assembly provided by the utility model, the shock absorber includes a piston rod and a cylinder, one end of the piston rod is movably arranged in the cylinder; the end of the piston rod away from the cylinder is provided with a first rotating shaft, and the first rotating shaft is rotatably arranged between the two shock absorber connecting holes; the end of the cylinder away from the piston rod is provided with a second rotating shaft, and the second rotating shaft is rotatably arranged between the two lock tongue connecting holes.

[0014] According to the cab rear suspension assembly provided by the utility model, a shock-absorbing spring is provided between the piston rod and the oil cylinder.

[0015] The cab rear suspension assembly provided by the utility model can be directly connected to the engine exhaust port through the exhaust pipe by integrating the exhaust pipe on the rear suspension bracket, thereby reducing the space required for exhaust fixation and solving the problem of difficult layout of the exhaust pipe in a short cab. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a structural schematic diagram of the cab rear suspension assembly provided by the utility model.

[0018] Figure 2The utility model relates to a rear suspension bracket of a cab rear suspension assembly.

[0019] Figure 3 It is a schematic structural diagram of a locking component of a cab rear suspension assembly provided by the utility model.

[0020] Figure 4 It is a schematic diagram of the shock absorber structure of the cab rear suspension assembly provided by the utility model.

[0021] Figure numerals: 100: rear suspension bracket; 110: exhaust pipe; 120: first mounting hole; 130: locking member connecting hole; 140: second mounting hole; 150: shock absorber connecting seat; 160: shock absorber connecting hole; 200: locking member; 210: locking hook; 220: locking tongue connecting hole; 230: locking tongue connecting shaft; 240: limiting notch; 300: shock absorber; 310: first rotating shaft; 320: piston rod; 330: shock absorber spring; 340: oil cylinder; 350: second rotating shaft. DETAILED DESCRIPTION

[0022] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0023] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0024] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0025] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the utility model. In this specification, the schematic representation 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 this specification and the features of different embodiments or examples without contradiction.

[0027] The following combination Figures 1-4 The utility model describes a cab rear suspension assembly.

[0028] Figure 1 The following is a schematic diagram illustrating the structure of the cab rear suspension assembly provided by the embodiment of the present utility model. Figure 1 An embodiment of the present invention provides a cab rear suspension assembly including a rear suspension bracket 100, a locking member 200 and a shock absorber 300. The rear suspension bracket 100 is provided with a limiting hole, and the limiting hole is provided with an exhaust pipe 110; the locking member 200 is provided on the rear suspension bracket 100, and is used to switch between a first position and a second position. In the first position, the locking member 200 is locked with the cab; in the second position, the locking member 200 is separated from the cab; the shock absorber 300 is provided between the rear suspension bracket 100 and the locking member 200.

[0029] In the above structure, the rear suspension bracket 100 is a support member fixed to the vehicle frame, supporting the entire cab rear suspension system. Specifically, the rear suspension bracket 100 can be a special-shaped casting. When the exhaust pipe 110 is mounted to the rear suspension bracket 100, its intake port should be as coaxial as possible with the engine exhaust port, and the exhaust port should be positioned toward the rear end of the vehicle, as per the overall vehicle layout. It should be noted that the exhaust pipe 110 can be removably secured to the retaining hole using a latch or other means, or it can be fixedly attached to the retaining hole. The locking member 200 is mounted on the rear suspension bracket 100 and functions to lock or unlock relative movement between the cab and the frame under different driving conditions (e.g., normal driving or bumpy road conditions). When the locking member 200 is in the first position, the cab is locked to the frame, and the exhaust pipe 110 can be fixed in a relatively compact position, preventing significant displacement of the cab relative to the frame. When the locking member 200 is in the second position, the cab has a limited range of motion relative to the frame. The shock absorber 300 is disposed between the rear suspension bracket 100 and the locking member 200 , and its purpose is to absorb vibration from the road surface and improve driving comfort.

[0030] In the existing cab rear suspension assembly, when arranging the exhaust pipe, it is necessary to bypass the rear suspension bracket 100, and due to space limitations, installation is extremely inconvenient. However, the present invention integrates the exhaust pipe 110 on the rear suspension bracket 100, which can be directly connected to the engine exhaust port through the exhaust pipe 110, reducing the space required for exhaust fixation, thereby solving the problem of difficult layout of the short cab exhaust line. The exhaust pipe 110 can be set to be rigid, which can facilitate connection with the remaining flexible pipes. The exhaust pipe 110 can also be designed to be flexible, with a certain degree of deformation ability and good sealing, to meet the motion connection relationship between the exhaust port and the cab rear suspension bracket during engine movement, so as to adapt to the relative movement between the cab and the cab rear suspension bracket.

[0031] In some possible embodiments, the exhaust pipe 110 can be designed in the form of a multi-section bellows, allowing for free bending between sections while maintaining a certain degree of overall rigidity to prevent leakage caused by excessive deformation. Different curvature radii can be designed based on practical space constraints to ensure it can bypass obstacles and connect to the main exhaust pipe. The exhaust pipe 110 can be made of the following materials: ① Heat-resistant rubber or silicone: These materials offer excellent heat resistance and a certain degree of flexibility, making them suitable for manufacturing the exhaust pipe 110. They can withstand high-temperature exhaust gases while also possessing a certain degree of mechanical strength. ② Metal bellows: Bellows made of stainless steel or other heat-resistant alloys are not only heat-resistant but also highly corrosion-resistant. Metal bellows can be connected to the rigid exhaust pipe via welding or flanges, providing sufficient flexibility. ③ Composite materials: Combining the advantages of metal and non-metallic materials, such as wrapping a metal tube with heat-resistant fiber, ensures both strength and flexibility. The rear suspension bracket 100 can be made of high-strength steel or aluminum alloy to ensure strength and rigidity while reducing weight.

[0032] Figure 2 The rear suspension bracket of the cab rear suspension assembly provided by the embodiment of the present utility model is illustrated. Figure 2 In some embodiments of the present invention, a first mounting hole 120 is defined at one end of the rear suspension bracket 100, and a second mounting hole 140 is defined at the other end. Both the first mounting hole 120 and the second mounting hole 140 are used for mounting the rear suspension bracket 100, and the exhaust pipe 110 is located between the first mounting hole 120 and the second mounting hole 140. The first mounting hole 120 and the second mounting hole 140 may be threaded holes.

[0033] When installing the rear suspension bracket 100, first install the exhaust pipe 110 in the retaining hole between the first mounting hole 120 and the second mounting hole 140. Ensure that the exhaust pipe 110 is properly positioned within the retaining hole and can flex freely to accommodate relative movement between the cab and the vehicle frame. The exhaust pipe 110's intake port should be as coaxial as possible with the engine exhaust port, and the exhaust port should face the rear end of the vehicle, as per the vehicle layout. Then, align the first mounting hole 120 of the rear suspension bracket 100 with the predetermined mounting position on the vehicle frame. This position is typically determined by design to ensure a secure installation of the rear suspension bracket 100. Secure the first mounting hole 120 in the predetermined position using bolts and washers. Use appropriate tools to tighten the bolts to the manufacturer's recommended torque value to ensure a secure and stable connection. Next, align the second mounting hole 140 of the rear suspension bracket 100 with the predetermined mounting position on the vehicle frame. This position is also determined during design to ensure a secure installation of the rear suspension bracket 100 on the vehicle frame. Likewise, the second mounting hole 140 is fixed at a predetermined position by bolts and washers, and it is ensured that all fixing parts are tightened to the correct torque value.

[0034] Reference Figure 2 In some embodiments of the present invention, a locking member connecting hole 130 is provided between the exhaust pipe 110 and the first mounting hole 120 , and the locking member connecting hole 130 is used to connect with the locking member 200 .

[0035] The locking member connecting hole 130 is provided to connect the locking member 200 to the rear suspension bracket 100. It should be noted that the connection between the two is a rotational connection. This allows the other end of the locking member 200 to rotate around the locking member connecting hole 130, thereby switching the locking member 200 between the first position and the second position. It should be noted that the size of the locking member connecting hole 130 needs to be compatible with the connection portion of the locking member 200 to ensure a more secure connection between the two.

[0036] Reference Figure 2 In some embodiments of the present invention, at least two shock absorber connection bases 150 are provided between the exhaust pipe 110 and the second mounting hole 140. The two shock absorber connection bases 150 are spaced apart and are used to connect to the shock absorber 300. The shock absorber connection bases 150 are provided with a shock absorber connection hole 160. One end of the shock absorber 300 passes through the shock absorber connection hole 160 and is rotatably connected to the shock absorber connection hole 160.

[0037] In the above structure, the shock absorber connector 150 can not only provide a stable installation position for the shock absorber 300, ensuring that the shock absorber 300 can be correctly installed on the vehicle. The load from the shock absorber 300 can also be dispersed through multiple shock absorber connectors 150 to avoid excessive force on a single point and improve the overall stability and durability of the system. The shock absorber connector 150 can be designed to be flat, which can provide a larger contact surface, help disperse stress, and reduce the risk of excessive local force. The shock absorber connector 150 can also be designed to be U-shaped or C-shaped. This shape can provide better support, especially when subjected to lateral force, it can better fix the shock absorber 300 and reduce shaking. Secondly, in order to increase the strength of the shock absorber connector 150, reinforcing ribs can be added to the shock absorber connector 150 to make the shock absorber connector 150 more sturdy and durable.

[0038] Figure 3 The schematic diagram of the locking structure of the cab rear suspension assembly provided by the embodiment of the present utility model is illustrated.

[0039] Reference Figure 3 In some embodiments of the present invention, the locking member 200 includes two locking hooks 210, which are spaced apart and connected at their first ends by a locking tongue connecting shaft 230. The locking tongue connecting shaft 230 is rotatably mounted in the locking member connecting hole 130, and the second ends of the two locking hooks 210 are each provided with a locking tongue connecting hole 220. The second ends of the locking hooks 210 are also provided with a limiting notch 240, and the limiting notch 240 is located on the opposite side of the locking tongue connecting hole 220. The limiting notch 240 is used to lock with the cab. It should be noted that the locking member 200 also includes a hydraulic propulsion system that propels the locking hooks 210 to switch between the first position and the second position.

[0040] To lock the hook 210 to the cab, the hydraulic system is activated, which rotates the hook 210 about the tongue connection shaft 230. This locks the retaining notch 240 with the corresponding locking portion on the cab. Similarly, to release the lock, the hydraulic system is reversed, disengaging the retaining notch 240 from the locking portion on the cab. Once released, the cab can be moved relative to the vehicle frame.

[0041] Figure 4 The schematic diagram of the shock absorber structure of the cab rear suspension assembly provided by the embodiment of the present utility model is illustrated.

[0042] Reference Figure 4In some embodiments of the present invention, the shock absorber 300 includes a piston rod 320 and a cylinder 340. One end of the piston rod 320 is movably mounted on the cylinder 340. A first rotation axis 310 is provided at the end of the piston rod 320 away from the cylinder 340. The first rotation axis 310 is rotatably mounted between the two shock absorber connection holes 160. A second rotation axis 350 is provided at the end of the cylinder 340 away from the piston rod 320. The second rotation axis 350 is rotatably mounted between the two lock tongue connection holes 220. A shock absorbing spring 330 is provided between the piston rod 320 and the cylinder 340.

[0043] When a vehicle is traveling on an uneven road, the up and down movement of the wheels will cause the suspension system to be displaced. The displacement is transmitted to the first rotating shaft 310 of the shock absorber 300 through the shock absorber 300 connection seat, thereby driving the piston rod 320 to move up and down in the oil cylinder 340. The movement of the piston rod 320 in the oil cylinder 340 will cause the hydraulic oil to flow through the small holes or grooves on the piston, generating resistance, thereby consuming some energy and playing a shock-absorbing role. At the same time, the shock-absorbing spring 330 will also be compressed or stretched to help buffer vibrations. The provision of the second rotating shaft 350 allows the oil cylinder 340 to rotate between the two locking tongue connection holes to adapt to the relative movement between the cab and the frame.

[0044] Through a combination of hydraulic damping and springs, the shock absorber 300 in this embodiment effectively absorbs and disperses impact forces from the road, reducing vibration transmitted to the cab and improving ride comfort. The first rotation axis 310 of the piston rod 320 and the second rotation axis 350 of the cylinder 340 are both rotatable, allowing the shock absorber 300 to adapt to vehicle movement in multiple directions, increasing the system's flexibility and adaptability.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A cab rear suspension assembly, characterized in that: include: The rear suspension bracket (100) is provided with a limiting hole, and the limiting hole is provided with an exhaust pipe (110); A locking member (200) is provided on the rear suspension bracket (100) and is used to switch between a first position and a second position. In the first position, the locking member (200) is locked with the cab; in the second position, the locking member (200) is separated from the cab. A shock absorber (300) is provided between the rear suspension bracket (100) and the locking member (200).

2. The cab rear suspension assembly according to claim 1, characterized in that: The exhaust pipe (110) is detachably arranged in the limiting hole.

3. The cab rear suspension assembly according to claim 1 or 2, characterized in that: One end of the rear suspension bracket (100) is provided with a first mounting hole (120), and the other end is provided with a second mounting hole (140); the first mounting hole (120) and the second mounting hole (140) are both used for mounting the rear suspension bracket (100); and the exhaust pipe (110) is located between the first mounting hole (120) and the second mounting hole (140).

4. The cab rear suspension assembly according to claim 3, characterized in that: A locking member connecting hole (130) is provided between the exhaust pipe (110) and the first mounting hole (120), and the locking member connecting hole (130) is used to be connected to the locking member (200).

5. The cab rear suspension assembly according to claim 4, characterized in that: At least two shock absorber connection seats (150) are provided between the exhaust pipe (110) and the second mounting hole (140), the two shock absorber connection seats (150) are arranged at intervals, and the shock absorber connection seats (150) are used to connect the shock absorber (300).

6. The cab rear suspension assembly according to claim 5, characterized in that: The shock absorber connection seat (150) is provided with a shock absorber connection hole (160), and one end of the shock absorber (300) passes through the shock absorber connection hole (160) and is rotatably connected to the shock absorber connection hole (160).

7. The cab rear suspension assembly according to claim 6, characterized in that: The locking member (200) comprises two locking hooks (210), the two locking hooks (210) are arranged at intervals, and the first ends of the two locking hooks (210) are connected by a lock tongue connecting shaft (230), the lock tongue connecting shaft (230) is rotatably arranged in the locking member connecting hole (130), and the second ends of the two locking hooks (210) are both provided with a lock tongue connecting hole (220).

8. The cab rear suspension assembly according to claim 7, characterized in that: The second end of the lock hook (210) is further provided with a limiting notch (240), and the limiting notch (240) is located on the opposite side of the lock tongue connecting hole (220).

9. The cab rear suspension assembly according to claim 7 or 8, characterized in that: The shock absorber (300) comprises a piston rod (320) and an oil cylinder (340), wherein one end of the piston rod (320) is movably disposed in the oil cylinder (340); A first rotating shaft (310) is provided at one end of the piston rod (320) away from the oil cylinder (340), and the first rotating shaft (310) is rotatably disposed between the two shock absorber connecting holes (160); The oil cylinder (340) is provided with a second rotating shaft (350) at one end away from the piston rod (320), and the second rotating shaft (350) is rotatably arranged between the two locking tongue connecting holes (220).

10. The cab rear suspension assembly according to claim 9, characterized in that: A shock-absorbing spring (330) is provided between the piston rod (320) and the oil cylinder (340).

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