A transmission shaft support seat fixing mechanism and a vehicle

Abstract

The utility model discloses a transmission shaft support seat fixing mechanism and vehicle for fixing the transmission shaft support seat of three -section type transmission shaft on the frame crossbeam, three -section type transmission shaft includes two transmission shafts with sliding fork with transmission shaft support seat, transmission shaft support seat fixing mechanism includes: crossbeam lining support, the inside of frame crossbeam is adapted to install to crossbeam lining support, the one side of fixed bolster is detachably connected with crossbeam lining support, and the other side is used for carrying transmission shaft support seat, damping component, damping component installs on fixed bolster, crossbeam lining support, fixed bolster and damping component cooperate, realize transmission shaft support seat high -strength fixed and vibration buffering on the frame crossbeam of rigidity limitation, the utility model ensures that transmission shaft high -speed rotation produces big additional bending moment, and there is no fixed loosening or crossbeam cracking, solves the contradiction of crossbeam low rigidity and transmission shaft support seat high -strength fixed.

Description

Technical Field

[0001] This utility model relates to a drive shaft support fixing mechanism and a vehicle, belonging to the field of vehicle drive shaft technology. Background Technology

[0002] The three-section driveshaft is a common structural form in vehicle transmission systems. Its core consists of two driveshafts with sliding forks and a driveshaft support. The driveshaft support needs to be assembled onto the frame crossbeam by a fixing mechanism and is a key component to ensure the stable operation of the transmission system.

[0003] The existing fixing mechanism has several problems: First, the frame crossbeam fixed by the driveshaft support is located in the middle of the frame. During vehicle operation, the frame will inevitably undergo torsional deformation. If the crossbeam stiffness is designed to be too high, the rigid constraint will exacerbate the stress concentration in the frame longitudinal beam, which can easily lead to longitudinal beam cracking. Second, the driveshaft rotates at extremely high speeds, and there is a universal joint angle between the two driveshafts. This will cause the driveshaft support to continuously bear a large additional bending moment generated by the high-speed rotation and the angle. Therefore, the fixing of the support must have sufficient strength and reliability, otherwise it will lead to the loosening and failure of the transmission system. In addition, the high-speed rotation of the driveshaft will also generate high-frequency vibration. If the support and the frame are rigidly connected, the vibration energy will be directly transmitted to the support housing, which can easily cause fatigue cracking of the housing. Therefore, vibration damping material needs to be installed between the two to absorb the vibration load.

[0004] In summary, designing a fixing mechanism that can meet the high-strength fixing requirements of the drive shaft support seat and achieve effective vibration reduction on the weak frame crossbeam with limited stiffness has become an urgent technical problem to be solved. Summary of the Invention

[0005] To address the problems existing in the prior art, this utility model provides a drive shaft support fixing mechanism and a vehicle.

[0006] To achieve the above objectives, this utility model employs a driveshaft support fixing mechanism for fixing the driveshaft support of a three-section driveshaft to the crossbeam of the vehicle frame. The three-section driveshaft includes two driveshafts with sliding forks and the driveshaft support. The driveshaft support fixing mechanism includes:

[0007] A crossbeam inner liner bracket, which is adapted to be installed on the inner side of the vehicle frame crossbeam;

[0008] A fixed bracket, one side of which is detachably connected to the inner lining bracket of the crossbeam, and the other side is used to mount the drive shaft support seat;

[0009] A vibration damping assembly, which is mounted on a fixed bracket;

[0010] The crossbeam inner lining bracket, fixed bracket and vibration damping components work together to achieve high-strength fixation and vibration buffering of the drive shaft support on the rigidity-limited crossbeam of the vehicle frame.

[0011] As an improvement, the crossbeam inner lining support includes a first L-shaped plate and a second L-shaped plate, the first L-shaped plate and the second L-shaped plate are connected by welding through the edge of the crossbeam, and the upper and lower sides of the edge of the crossbeam are provided with bevels to facilitate welding.

[0012] As an improvement, the vertical length of the first L-shaped plate is shorter than the vertical length of the second L-shaped plate;

[0013] The first L-shaped plate has a first through hole on its vertical plate for fixing to the frame crossbeam, and the second L-shaped plate has a second through hole on its vertical plate for connecting to the frame crossbeam and the fixed bracket.

[0014] As an improvement, n-shaped notches are provided on the left and right sides of the vertical plates of the first L-shaped plate and the second L-shaped plate.

[0015] As an improvement, the left and right sides of the crossbeam inner lining support are also provided with reinforcing ribs, and the reinforcing ribs are provided with n-shaped notches.

[0016] As an improvement, the fixed bracket is an L-shaped structure, with a third through hole on the vertical plate that is adapted to the inner lining bracket of the crossbeam, and a fourth through hole on the horizontal plate for installing the vibration damping component.

[0017] The fixed bracket is provided with L-shaped reinforcing ribs extending along the vertical and horizontal plates.

[0018] As an improvement, the vibration damping component includes two sets of rubber pads arranged symmetrically on top of each other. Each set of rubber pads has mounting holes adapted to the fixed bracket. The upper rubber pad is attached to the upper surface of the fixed bracket's horizontal plate, and the lower rubber pad is attached between the lower surface of the fixed bracket's horizontal plate and the upper mounting surface of the drive shaft support.

[0019] As an improvement, a diagonal brace is also included to distribute the stress of the fixed support. The diagonal brace has a Z-shaped structure. One end of the diagonal brace is detachably connected to the inner lining support of the crossbeam, and the other end of the diagonal brace is detachably connected to the fixed support, so that the inner lining support of the crossbeam, the fixed support and the diagonal brace form a triangular structure.

[0020] As an improvement, the vertical plate of the inclined support is provided with a fifth through hole for connecting with the inner lining support of the crossbeam, and the horizontal plate is provided with a sixth through hole for connecting with the fixed support.

[0021] The vertical plate of the inclined support is installed on the rear side of the inner lining support of the crossbeam, and the horizontal plate is attached to the upper surface of the horizontal plate of the fixed support.

[0022] A second aspect of this utility model also provides a vehicle on which the aforementioned drive shaft support fixing mechanism is installed.

[0023] Compared with the prior art, the transmission shaft support fixing mechanism of this utility model has the following advantages:

[0024] (1) The traditional drive shaft support seat fixing mechanism is directly fixed, which is prone to tearing and deformation of the crossbeam bolts. This utility model uses the crossbeam inner lining bracket built into the vehicle frame crossbeam to form a reinforcing layer: it not only disperses the load to avoid stress concentration in the crossbeam, but also provides a stable reference for the fixing bracket, ensuring that when the drive shaft rotates at high speed and generates a large additional bending moment, there is no loosening of the fixing or cracking of the crossbeam, thus solving the contradiction between the low stiffness of the crossbeam and the high strength fixing of the drive shaft support seat.

[0025] (2) High-speed vibration of the drive shaft can easily cause the drive shaft support seat to crack and the whole vehicle to resonate. This utility model constructs a non-rigid connection by fixing the vibration damping component between the bracket and the drive shaft support seat: directly absorbs vibration energy, reduces the risk of support seat cracking; weakens the transmission of vibration to the frame, avoids whole vehicle resonance, and improves transmission stability and driving smoothness.

[0026] (3) The core components (beam inner liner bracket, fixed bracket, and vibration damping components) adopt a modular design: the beam inner liner bracket can be adapted to the crossbeam of the vehicle frame with a Z-shaped structure without major modifications; the fixed bracket can be detached and connected for easy maintenance; it can be adapted to the low stiffness crossbeam in the middle of different vehicle models, reducing the adaptation development cost.

[0027] (4) Traditional fixed mechanisms require complex stacked parts, which are cumbersome to assemble and have a high failure rate. This utility model can achieve strong foundation, stable connection and vibration control functions by only cooperating with the crossbeam inner lining bracket, fixed bracket and vibration damping components: the structural logic is clear, reducing assembly errors and failure risks; the detachable design facilitates later maintenance and improves long-term reliability. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the installation structure of this utility model;

[0030] Figure 2 This is a schematic diagram showing the connection between the crossbeam inner liner bracket and the vehicle frame crossbeam of this utility model.

[0031] Figure 3This is a schematic diagram of the structure of the crossbeam inner lining support of this utility model;

[0032] Figure 4 This is an exploded view of the crossbeam inner lining support of this utility model.

[0033] Figure 5 This is a structural schematic diagram of the fixing bracket of this utility model;

[0034] Figure 6 This is a schematic diagram of the assembly and use of this utility model;

[0035] In the diagram: 1. Crossbeam inner lining bracket, 1-1. First L-shaped plate, 1-2. Second L-shaped plate, 1-3. First reinforcing rib, 1-4. Second reinforcing rib, 2. Fixed bracket, 2-1. L-shaped reinforcing rib, 3. Diagonal brace, 4. Rubber pad, 5. Mounting seat, 6. Drive shaft support seat, 7. Frame crossbeam. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments and specific features in the embodiments are detailed descriptions of the technical solutions of this application, rather than limitations thereof. In the absence of conflict, the embodiments and technical features in the embodiments can be combined with each other.

[0037] In the description of this utility model, it should be understood that the terms "front," "rear," "left," and "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature.

[0038] like Figures 1-6 As shown, a driveshaft support fixing mechanism is used to fix the driveshaft support 6 of a three-section driveshaft to the frame crossbeam 7. The three-section driveshaft includes two driveshafts with sliding forks and the driveshaft support 6. The driveshaft support 6 fixing mechanism includes a crossbeam inner liner bracket 1, a fixing bracket 2, and a vibration damping component.

[0039] The crossbeam inner liner bracket 1 is adapted to be installed on the inner side of the frame crossbeam 7, which can form an internal reinforcing layer to distribute the load and prevent the crossbeam from cracking due to local stress concentration, while providing a stable installation reference for subsequent components; at the same time, mounting seats 5 are bolted to the upper and lower sides of the left and right ends of the frame crossbeam 7 for connection with the frame.

[0040] One side of the fixed bracket 2 is detachably connected to the crossbeam inner lining bracket 1, which facilitates later maintenance and component replacement. The other side is used to mount the drive shaft support 6, which can ensure the connection stability between the drive shaft support 6 and the overall fixed mechanism.

[0041] The vibration damping component is connected to the fixed bracket 2 and can directly absorb the vibration energy generated by the high-speed rotation of the drive shaft, thereby reducing the transmission of vibration to the support housing and the frame.

[0042] The crossbeam inner lining bracket 1, fixed bracket 2, and vibration damping components work together to achieve high-strength fixation and vibration buffering of the drive shaft support seat 6 on the rigidity-limited frame crossbeam 7 through the synergistic effect of the reinforcing layer stabilizing the foundation, the detachable bracket ensuring the connection, and the vibration damping components buffering vibration. This effectively solves the core contradiction between the low rigidity of the frame crossbeam 7 and the high fixation strength and low vibration impact of the drive shaft support seat 6.

[0043] In some embodiments, such as Figure 3 , Figure 4 As shown, the crossbeam inner liner bracket 1 is composed of a first L-shaped plate 1-1 and a second L-shaped plate 1-2 welded together at the edges of the crossbeams. The design of welding two L-shaped plates eliminates the need for mold processing, shortening the manufacturing cycle and reducing production costs. At the same time, the upper and lower sides of the edges of the crossbeams are provided with bevels to facilitate welding, which can increase the welding contact area and improve the welding firmness, further ensuring the overall structural strength of the crossbeam inner liner bracket 1 and ensuring its reinforcement effect on the vehicle frame crossbeam 7.

[0044] In some embodiments, such as Figure 3 , Figure 4 As shown, the vertical plate length of the first L-shaped plate 1-1 is shorter than the vertical plate length of the second L-shaped plate 1-2. Through the differentiated design of the vertical plate length, it can adapt to the installation space inside the frame crossbeam 7 and meet different connection requirements at the same time.

[0045] The first L-shaped plate 1-1 has at least four first through holes on its vertical plate for fixing to the frame crossbeam 7, ensuring the stability of the connection between the crossbeam inner liner bracket 1 and the crossbeam base; the second L-shaped plate 1-2 has at least six second through holes on its vertical plate, which can be connected to the frame crossbeam 7 to strengthen the fixing effect, and can also be docked with the fixed bracket 2 to provide multi-point installation support for the fixed bracket 2, further improving the connection strength of the overall mechanism.

[0046] In some embodiments, such as Figure 3 , Figure 4 As shown, n-shaped notches are provided on both the left and right sides of the vertical plates of the first L-shaped plate 1-1 and the second L-shaped plate 1-2. This design can extend the contact edge between the two L-shaped plates and the crossbeam 7 of the frame, so that the load is distributed more evenly. The left and right sides of the crossbeam inner lining bracket 1 are also provided with a first reinforcing rib 1-3 and a second reinforcing rib 1-4. The reinforcing ribs are provided with n-shaped notches at the same time. This can not only improve the overall rigidity of the crossbeam inner lining bracket 1 through the reinforcing ribs, but also prevent the crossbeam from being sheared and cracked due to excessive rigidity of the bracket through the n-shaped notches, thus balancing the reinforcement and damage prevention effects.

[0047] In some embodiments, such as Figure 5 , Figure 6 As shown, the fixed bracket 2 has an L-shaped structure. The vertical plate of the fixed bracket 2 is provided with a third through hole that is compatible with the inner lining bracket 1 of the crossbeam. The two can be precisely connected and detached through the third through hole.

[0048] The horizontal plate of the fixed bracket 2 is provided with a fourth through hole for installing the vibration damping component, providing a stable assembly base for the vibration damping component; at the same time, the fixed bracket 2 is provided with an L-shaped reinforcing rib 2-1 extending along the vertical plate and the horizontal plate. The reinforcing rib can enhance the bending resistance of the fixed bracket 2 and prevent it from deforming and cracking due to the additional bending moment of the transmission shaft.

[0049] In some embodiments, such as Figure 1 As shown, the vibration damping component includes two sets of rubber pads 4 arranged symmetrically at the top and bottom. Each set of rubber pads 4 has mounting holes that are compatible with the fixed bracket 2, ensuring that the rubber pads 4 are securely connected to the fixed bracket 2.

[0050] The upper rubber pad 4 is attached to the upper surface of the horizontal plate of the fixed bracket 2, and the lower rubber pad 4 is attached between the lower surface of the horizontal plate of the fixed bracket 2 and the upper mounting surface of the drive shaft support 6. Through the clamping design of the upper and lower double-layer pads, the vibration generated by the high-speed rotation of the drive shaft can be absorbed to the maximum extent, which not only protects the housing of the drive shaft support 6 from cracking, but also weakens the transmission of vibration to the frame and avoids resonance of the whole vehicle.

[0051] In some embodiments, such as Figure 5 , Figure 6 As shown, it also includes a diagonal bracing 3 for dispersing the stress of the fixed bracket 2. The diagonal bracing 3 has a Z-shaped structure, and there are two of them, which are symmetrically arranged on the left and right sides of the fixing mechanism.

[0052] The vertical plate at the upper end of the inclined support 3 is detachably connected to the inner support 1 of the crossbeam, and the horizontal plate at the lower end is detachably connected to the horizontal plate of the fixed support 2, so that the inner support 1 of the crossbeam, the fixed support 2 and the inclined support 3 form a triangular stable structure. The triangular structure can effectively disperse the concentrated stress at the bending point of the fixed support 2, prevent the support from cracking or deforming, and significantly improve the strength and rigidity of the overall mechanism.

[0053] In some embodiments, such as Figure 1 As shown, the vertical plate of the inclined support 3 has at least two fifth through holes for connecting with the inner support 1 of the crossbeam, and the horizontal plate has at least two sixth through holes for connecting with the fixed support 2. The multi-point through hole design can enhance the connection stability, avoid loosening due to excessive force on a single hole, and significantly enhance the connection stability between the inclined support 3 and the surrounding components.

[0054] Meanwhile, the vertical plate of the inclined brace 3 is connected to the rear side of the second L-shaped plate 1-2 of the crossbeam inner liner bracket 1. During assembly, the upper end of the inclined brace 3 is bolted through the fifth through hole, the frame crossbeam 7, and the second through hole of the second L-shaped plate 1-2 in sequence, so as to realize the synchronous fixation of the inclined brace 3 with the frame crossbeam 7 and the crossbeam inner liner bracket 1, and further strengthen the overall connection strength. The horizontal plate of the inclined brace 3 is closely attached to the upper surface of the horizontal plate of the fixed bracket 2. By replacing point contact with surface contact, the load borne by the inclined brace 3 can be evenly transferred to the fixed bracket 2, ensuring that the triangular structure formed by the crossbeam inner liner bracket 1, the fixed bracket 2 and the inclined brace 3 is stressed evenly, and effectively dispersing the concentrated stress at the bending point of the fixed bracket 2.

[0055] Finally, this utility model also provides a vehicle in which the above-mentioned drive shaft support fixing mechanism is installed on the crossbeam 7 of the vehicle frame; specifically, the drive shaft support fixing mechanism is stably connected to the vehicle frame by mounting seats 5 bolted to the left and right ends of the crossbeam 7, and the mounting seats 5 can distribute the load transmitted to the frame by the fixing mechanism, further improving the overall assembly reliability.

[0056] This fixing mechanism can specifically address the pain point of limited rigidity in vehicle frame beams: on the one hand, it achieves high-strength and stable fixing of the three-section driveshaft support, ensuring that the support does not loosen when the driveshaft is running at high speed; on the other hand, it effectively absorbs the vibration generated by the high-speed rotation of the driveshaft through the vibration damping components, which not only prevents the frame longitudinal beam from cracking due to stress concentration and the driveshaft support housing from being damaged by vibration impact, but also weakens the transmission of vibration to the whole vehicle, reduces the risk of resonance, and ultimately significantly improves the operational stability of the vehicle transmission system and the ride smoothness of the whole vehicle.

[0057] The above descriptions are merely embodiments of this utility model, and common technical solutions and / or characteristics known in the scheme are not described in detail here. It should be noted that those skilled in the art can make various modifications, improvements, or equivalent substitutions without departing from the technical solution of this utility model, and all such modifications, improvements, or equivalent substitutions should be covered within the scope of the claims of this utility model. The scope of protection claimed in this application should be determined by the content of its claims, and the detailed descriptions of the embodiments can be used to interpret the content of the claims.

Claims

1. A driveshaft support fixing mechanism for fixing a driveshaft support of a three-section driveshaft to a vehicle frame crossbeam, wherein the three-section driveshaft comprises two driveshafts with sliding forks and the driveshaft support, characterized in that, The drive shaft support fixing mechanism includes: A crossbeam inner liner bracket, which is adapted to be installed on the inner side of the vehicle frame crossbeam; A fixed bracket, one side of which is detachably connected to the inner lining bracket of the crossbeam, and the other side is used to mount the drive shaft support seat; A vibration damping assembly, which is mounted on a fixed bracket; The crossbeam inner lining bracket, fixed bracket and vibration damping components work together to achieve high-strength fixation and vibration buffering of the drive shaft support on the rigidity-limited crossbeam of the vehicle frame.

2. The transmission shaft support fixing mechanism according to claim 1, characterized in that, The crossbeam inner lining support includes a first L-shaped plate and a second L-shaped plate. The first L-shaped plate and the second L-shaped plate are connected by welding through the edge of the crossbeam, and the upper and lower sides of the edge of the crossbeam are provided with bevels to facilitate welding.

3. The transmission shaft support fixing mechanism according to claim 2, characterized in that, The length of the vertical plate of the first L-shaped plate is shorter than the length of the vertical plate of the second L-shaped plate; The first L-shaped plate has a first through hole on its vertical plate for fixing to the frame crossbeam, and the second L-shaped plate has a second through hole on its vertical plate for connecting to the frame crossbeam and the fixed bracket.

4. The transmission shaft support fixing mechanism according to claim 2, characterized in that, The first L-shaped plate and the second L-shaped plate both have n-shaped notches on their left and right sides.

5. The transmission shaft support fixing mechanism according to claim 2, characterized in that, The left and right sides of the crossbeam inner lining support are also provided with reinforcing ribs, and the reinforcing ribs are provided with n-shaped notches.

6. The transmission shaft support fixing mechanism according to claim 1, characterized in that, The fixed bracket has an L-shaped structure. The vertical plate of the fixed bracket is provided with a third through hole that is adapted to the inner lining bracket of the crossbeam, and the horizontal plate is provided with a fourth through hole for installing the vibration damping component. The fixed bracket is provided with L-shaped reinforcing ribs extending along the vertical and horizontal plates.

7. A transmission shaft support fixing mechanism according to claim 6, characterized in that, The vibration damping component includes two sets of rubber pads arranged symmetrically on top of each other. Each set of rubber pads has mounting holes that are adapted to the fixed bracket. The upper rubber pad is attached to the upper surface of the horizontal plate of the fixed bracket, and the lower rubber pad is attached between the lower surface of the horizontal plate of the fixed bracket and the upper mounting surface of the drive shaft support.

8. The transmission shaft support fixing mechanism according to claim 1, characterized in that, It also includes a diagonal brace for dispersing the stress of the fixed support, the diagonal brace having a Z-shaped structure; one end of the diagonal brace is detachably connected to the inner lining support of the crossbeam, and the other end of the diagonal brace is detachably connected to the fixed support, so that the inner lining support of the crossbeam, the fixed support and the diagonal brace form a triangular structure.

9. A transmission shaft support fixing mechanism according to claim 8, characterized in that, The vertical plate of the inclined support has a fifth through hole for connecting with the inner lining support of the crossbeam, and the horizontal plate has a sixth through hole for connecting with the fixed support. The vertical plate of the inclined support is installed on the rear side of the inner lining support of the crossbeam, and the horizontal plate is attached to the upper surface of the horizontal plate of the fixed support.

10. A vehicle, characterized in that, The vehicle is equipped with a drive shaft support fixing mechanism as described in any one of claims 1-9.

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