Engine rear suspension system and commercial vehicle

Abstract

The utility model relates to an engine rear suspension system and a commercial vehicle, and belongs to the field of vehicle accessories. According to the technical scheme, the engine rear suspension system comprises a vehicle frame, the vehicle frame comprises a rear balance beam, two suspension assemblies are installed on the rear balance beam, the structures of the two suspension assemblies are symmetrically arranged, each suspension assembly comprises a vehicle frame connecting piece and a gearbox connecting piece, the vehicle frame connecting piece is in a U shape, and the gearbox connecting piece is connected with the vehicle frame connecting piece. Comprising two vertical plates and a first transverse plate located between the two vertical plates, the gearbox connecting piece is in an L shape and comprises a second transverse plate and a connecting plate, the second transverse plate is located above the first transverse plate, an elastic assembly is arranged between the first transverse plate and the second transverse plate, and the connecting plate extends towards the lower portion of the second transverse plate. The gearbox connecting piece is of a bent structure and is embedded into the frame connecting piece to form a limiting structure, operation interference caused by the fact that the amount of motion of a power assembly is too large due to large amplitude when an engine operates is prevented, and meanwhile the durability of the elastic assembly is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of vehicle accessories, in particular to an engine rear suspension system and a commercial vehicle. BACKGROUND

[0002] The engine rear suspension system is an important component of the automobile chassis, which absorbs the dynamic force vibration transmitted by the wheels, the main reducer, the transmission shaft and the transmission, avoids the transmission of the whole vehicle vibration to the power assembly, and also avoids the transmission of the power assembly vibration to the whole vehicle, thereby preventing the whole vehicle from shaking.

[0003] The engine rear suspension system comprises a transmission support, a rubber support and a suspension support, which are connected in sequence, the transmission support is connected with the transmission of the automobile, the suspension support is connected with the frame of the automobile, and the rubber support is connected between the engine support and the suspension support to block the vibration transmission between the engine support and the transmission support, thereby avoiding the mutual conduction vibration between the engine and the frame.

[0004] With the continuous improvement of the power of the vehicle, the eight-speed transmission has gradually replaced the six-speed transmission, but the overall size of the eight-speed transmission is larger than that of the six-speed transmission, the engine rear suspension arrangement space is tight, and with the continuous expansion of the market of the vehicle special vehicle, the requirement of the upper installation is more and more strict, the light vehicle adopts the increase of the beam height to meet the performance requirement and the installation requirement, but the beam exceeding the upper wing surface means that the frame pad of the frame connected with the upper installation needs to be increased, the gravity center of the upper installation is increased, which leads to the instability of the vehicle running and causes the rollover accident, and the frame beam exceeding the upper wing surface cannot meet the requirement. SUMMARY

[0005] The utility model provides an engine rear suspension system for solving the problem that the current engine rear suspension system is difficult to adapt to larger size transmission.

[0006] To solve the above problems, the utility model adopts the technical scheme that an engine rear suspension system comprises a frame, the frame comprises a rear balance beam, two suspension assemblies are installed on the rear balance beam, the two suspension assemblies are symmetrically arranged, the suspension assembly comprises a frame connecting piece and a transmission connecting piece, the frame connecting piece is U-shaped and comprises two vertical plates and a first horizontal plate between the two vertical plates, the transmission connecting piece is L-shaped and comprises a second horizontal plate and a connecting plate, the second horizontal plate is above the first horizontal plate, an elastic assembly is arranged between the first horizontal plate and the second horizontal plate, and the connecting plate extends downward from the second horizontal plate. The transmission connecting piece is a bending structure embedded in the frame connecting piece, forming a limiting structure, preventing the large amplitude of the engine operation from causing the excessive movement of the power assembly and generating operation interference, and improving the durability of the elastic assembly.

[0007] As a preferred implementation of the engine rear suspension system, the transmission connecting piece further comprises a transition plate between the second cross plate and the connecting plate, the transition plate is bent into an arc shape. The transition plate connects the second cross plate and the connecting plate, and the transition plate is smoothly transitioned by increasing the horizontal size to reduce the vertical size, so as to achieve the installation purpose of the balance beam.

[0008] As a preferred implementation of the engine rear suspension system, the second cross plate, the transition plate and the connecting plate are an integral bent structure, and reinforcing ribs are arranged on the second cross plate, the transition plate and the connecting plate and extend along the extension direction of the second cross plate, the transition plate and the connecting plate.

[0009] As a preferred implementation of the engine rear suspension system, the reinforcing ribs are protruding structures formed by stamping on the plate surfaces of the second cross plate, the transition plate and the connecting plate. The reinforcing ribs are arranged on the transition plate and combine the second cross plate and the connecting plate together to improve the overall strength and modal.

[0010] As a preferred implementation of the engine rear suspension system, the elastic assembly comprises an upper connecting frame and a lower connecting frame, and an elastic member is fixed between the upper connecting frame and the lower connecting frame. The upper connecting frame is bent downward to form a first bent plate on the side close to the connecting plate, and the lower connecting frame is bent upward to form a second bent plate on the side close to the connecting plate. A limiting window is arranged on the second bent plate, and a clamping plate is arranged on the first bent plate and inserted into the limiting window. The limiting window reduces the movement of the power assembly and improves the reliability and durability of the system.

[0011] As a preferred implementation of the engine rear suspension system, the top surface of the upper connecting frame is provided with an upper connecting bolt, the second cross plate is provided with an upper connecting hole through which the upper connecting bolt passes, and the upper connecting bolt is fixed by a nut after passing through the upper connecting hole. The bottom surface of the lower connecting frame is provided with a lower connecting bolt, and the first cross plate is provided with a lower connecting hole through which the lower connecting bolt passes, and the lower connecting bolt is fixed by a nut after passing through the lower connecting hole.

[0012] As a preferred implementation of the engine rear suspension system, the top surface of the upper connecting frame is further provided with an upper connecting pin, the second cross plate is provided with an upper pin hole matched with the upper connecting pin, and the upper connecting pin is connected with the upper pin hole. The bottom surface of the lower connecting frame is further provided with a lower connecting pin, and the first cross plate is provided with a lower pin hole matched with the lower connecting pin, and the lower connecting pin is connected with the lower pin hole.

[0013] As a preferred implementation of the engine rear suspension system, the upper connecting bolt and the lower connecting bolt are not collinear, and the upper connecting pin and the lower connecting pin are not collinear. It can prevent the elastic assembly from being installed upside down.

[0014] As a preferred implementation scheme of the engine rear suspension system, the connecting plate is inclined to the vehicle driving direction.

[0015] In another aspect, the utility model also provides a commercial vehicle, adopts the engine rear suspension system above-mentioned.

[0016] Through above technical scheme can see, the utility model has the advantages that, the engine rear suspension system passes through adopting the suspension assembly of mutually symmetrical structure, improved the balance and stability of system, the big amplitude movement of power assembly is effectively prevented when running through the bending structure and the limiting design of transmission connecting piece, avoided the operation interference, and promoted the durability of elastic component. The arc design of transition plate optimizes the installation of balance beam, improves the space utilization efficiency, and the setting of reinforcing rib enhances the strength and mode of overall structure. The limiting window and the card board design in elastic component further reduce the movement of power assembly, improve the reliability and durability of system. The fixing mode of upper connecting frame and lower connecting frame includes non-collinear bolt and pin connection, which ensures the stability of the system and prevents the reverse installation. The inclined design of the connecting plate to the vehicle driving direction may help to optimize the dynamic performance of the system. In summary, the system is suitable for commercial vehicles, which can improve the driving performance and riding comfort, and reduce the maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the utility model, the following will be briefly introduced the drawings needed to be used in the description, obviously, the drawings in the following description is only some embodiments of the utility model, for those skilled in the art, under the premise of not paying creative labor, other drawings can also be obtained according to these drawings.

[0018] Figure 1 It is a structural schematic diagram of the embodiment one of the utility model.

[0019] Figure 2 It is a structural schematic diagram of the suspension assembly in the embodiment one of the utility model Figure 1 .

[0020] Figure 3 It is a structural schematic diagram of the suspension assembly in the embodiment one of the utility model Figure 2 .

[0021] Figure 4 It is a structural schematic diagram of the elastic component in the embodiment one of the utility model.

[0022] Figure 5 It is a structural schematic diagram of the engine connecting piece in the embodiment one of the utility model.

[0023] MAIN REFERENCE NUMERALS

[0024] 1. Frame connector, 2. Elastic assembly, 21. Upper connecting frame, 22. Elastic member, 23. Lower connecting frame, 24. First bent plate, 25. Second bent plate, 26. Limiting window, 27. Clamping plate, 3. Gearbox connector, 31. Second cross plate, 32. Transition plate, 33. Connecting plate, 34. Reinforcement rib, 4. Gearbox, 5. Balance beam. DETAILED DESCRIPTION

[0025] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of them. Based on the embodiments in this patent, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this patent.

[0026] Example 1

[0027] like Figure 1 As shown, an engine rear suspension system includes a vehicle frame, wherein the vehicle frame includes a rear balance beam 5, and two suspension components are installed on the rear balance beam 5. The two suspension components are symmetrically arranged.

[0028] like Figures 2-5 As shown, the suspension assembly includes a frame connector 1 and an engine connector 3. The frame connector 1 is U-shaped, comprising two vertical plates and a first horizontal plate located between the two vertical plates. The engine connector 3 is L-shaped, comprising a second horizontal plate 31, a transition plate 32, and a connecting plate 33. The transition plate 32 is located between the second horizontal plate 31 and the connecting plate 33 and is bent into an arc. The second horizontal plate is located above the first horizontal plate. An elastic component 2 is provided between the first and second horizontal plates. The connecting plate extends below the second horizontal plate 31 and is inclined toward the direction of vehicle travel. The second horizontal plate 31, the transition plate 32, and the connecting plate 33 are integrally bent structures. The second horizontal plate 31, the transition plate 32, and the connecting plate 33 are provided with reinforcing ribs 34. The reinforcing ribs 34 extend along the extension direction of the second horizontal plate 31, the transition plate 32, and the connecting plate 33. The reinforcing ribs 34 are protrusions stamped on the plate surfaces of the second horizontal plate 31, the transition plate 32, and the connecting plate 33.

[0029] The elastic assembly 2 comprises an upper connecting frame 21 and a lower connecting frame 23, and an elastic piece 22 is fixed between the upper connecting frame 21 and the lower connecting frame 23; the upper connecting frame 21 is bent downward to form a first bent plate 24 on one side close to the connecting plate 33; the lower connecting frame 23 is bent upward to form a second bent plate 25 on one side close to the connecting plate 33; a limiting window 26 is formed on the second bent plate 25; a clamping plate 27 is arranged on the first bent plate 24 and inserted into the limiting window 26; an upper connecting bolt is arranged on the top surface of the upper connecting frame 21; an upper connecting hole is formed on the second horizontal plate 31 for the upper connecting bolt to pass through; the upper connecting bolt is fixed by a nut after passing through the upper connecting hole; a lower connecting bolt is arranged on the bottom surface of the lower connecting frame 23; a lower connecting hole is formed on the first horizontal plate for the lower connecting bolt to pass through; the lower connecting bolt is fixed by a nut after passing through the lower connecting hole; an upper connecting pin is arranged on the top surface of the upper connecting frame 21; an upper pin hole is formed on the second horizontal plate 31 for the upper connecting pin to pass through; the upper connecting pin is connected with the upper pin hole; a lower connecting pin is arranged on the bottom surface of the lower connecting frame 23; a lower pin hole is formed on the first horizontal plate for the lower connecting pin to pass through; the lower connecting pin is connected with the lower pin hole; the upper connecting bolt and the lower connecting bolt are not collinear; and the upper connecting pin and the lower connecting pin are not collinear.

[0030] Embodiment two

[0031] The embodiment further provides a commercial vehicle adopting the engine rear suspension system.

[0032] It can be seen from the above embodiments that the engine rear suspension system has the beneficial effects that the suspension assembly with symmetrical structure is adopted to improve the balance and stability of the system; the bending structure and the limiting design of the gearbox connecting piece effectively prevent large-amplitude movement of the power assembly during operation, avoid operation interference, and improve the durability of the elastic assembly; the arc-shaped design of the transition plate optimizes the installation of the balance beam, improves the space utilization efficiency, and the arrangement of the reinforcing ribs enhances the strength and modal of the overall structure; the limiting window and the clamping plate in the elastic assembly further reduce the movement amount of the power assembly, and improve the reliability and durability of the system; the fixing mode of the upper connecting frame and the lower connecting frame, including the non-collinear bolt and pin connection, ensures the stability of the system and prevents the installation from being reversed; the inclination of the connecting plate to the driving direction of the vehicle may help to optimize the dynamic performance of the system; and in summary, the system is suitable for commercial vehicles, can improve the driving performance and riding comfort, and reduce the maintenance cost.

[0033] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An engine rear suspension system comprising a frame, characterized in that, The frame comprises a rear balance beam (5), two suspension assemblies are mounted on the rear balance beam (5) and are arranged symmetrically, the suspension assembly comprises a frame connecting piece (1) and a gearbox connecting piece (3), the frame connecting piece (1) is U-shaped and comprises two vertical plates and a first horizontal plate between the two vertical plates, the gearbox connecting piece (3) is L-shaped and comprises a second horizontal plate (31) and a connecting plate (33), the second horizontal plate is above the first horizontal plate, an elastic assembly (2) is arranged between the first horizontal plate and the second horizontal plate, and the connecting plate extends downwards to the second horizontal plate (31).

2. The engine rear suspension system of claim 1, wherein, The gearbox connecting piece (3) further comprises a transition plate (32), the transition plate (32) is between the second horizontal plate (31) and the connecting plate (33), and the transition plate (32) is bent into an arc shape.

3. The engine rear suspension system of claim 2, wherein, The second horizontal plate (31), the transition plate (32) and the connecting plate (33) are an integral bent structure, and a reinforcing rib (34) is arranged on the second horizontal plate (31), the transition plate (32) and the connecting plate (33) and extends along the extension direction of the second horizontal plate (31), the transition plate (32) and the connecting plate (33).

4. The engine rear suspension system of claim 3, wherein, The reinforcing rib (34) is a protruding structure punched on the plate surface of the second horizontal plate (31), the transition plate (32) and the connecting plate (33).

5. The engine rear suspension system of claim 1, wherein, The elastic assembly (2) comprises an upper connecting frame (21) and a lower connecting frame (23), an elastic piece (22) is fixedly arranged between the upper connecting frame (21) and the lower connecting frame (23), a first bent plate (24) is bent downwards on one side of the upper connecting frame (21) close to the connecting plate (33), a second bent plate (25) is bent upwards on one side of the lower connecting frame (23) close to the connecting plate (33), a limiting window (26) is formed in the second bent plate (25), a clamping plate (27) is arranged on the first bent plate (24) and is inserted into the limiting window (26).

6. The engine rear suspension system of claim 5, wherein, An upper connecting bolt is arranged on the top surface of the upper connecting frame (21), an upper connecting hole is formed in the second horizontal plate (31) and passes through the upper connecting bolt, and the upper connecting bolt is fixed by a nut after passing through the upper connecting hole; a lower connecting bolt is arranged on the bottom surface of the lower connecting frame (23), a lower connecting hole is formed in the first horizontal plate and passes through the lower connecting bolt, and the lower connecting bolt is fixed by a nut after passing through the lower connecting hole.

7. The engine rear suspension system of claim 6, wherein, An upper connecting pin is further arranged on the top surface of the upper connecting frame (21), an upper pin hole is formed in the second horizontal plate (31) and matches the upper connecting pin, and the upper connecting pin is connected with the upper pin hole; a lower connecting pin is further arranged on the bottom surface of the lower connecting frame (23), a lower pin hole is formed in the first horizontal plate and matches the lower connecting pin, and the lower connecting pin is connected with the lower pin hole.

8. The engine rear suspension system of claim 7, wherein, The upper connecting bolt and the lower connecting bolt are not collinear, and the upper connecting pin and the lower connecting pin are not collinear.

9. The engine rear suspension system of claim 1, wherein, The connecting plate (33) is inclined to the driving direction of the vehicle.

10. A commercial vehicle characterized by An engine rear suspension system is adopted. An engine rear suspension system is adopted.

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