Front plate spring rear support of truck
By optimizing the structural design of the truck front leaf spring rear bracket, combined with weight reduction grooves and reinforcement ribs, the problem of insufficient structural strength in the heavy-duty vehicle suspension system is solved, weight reduction and stability improvement is achieved, meeting the vehicle layout requirements and improving safety.
Patent Information
- Application Number
- CN202422934020.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-08-29
- Estimated Expiration
- 2034-11-29
AI Technical Summary
In the existing heavy-duty vehicle suspension system, the front leaf spring rear bracket has insufficient structural strength under load conditions, is inconvenient to install and difficult to maintain, making it difficult to meet the vehicle layout requirements and save space.
A truck front leaf spring rear bracket is designed, using a structure connected to the upper bracket, lower bracket and intermediate bracket, combined with weight reduction grooves and reinforcement ribs, and using ZGD840-1030 cast steel material, optimize the overall structure to improve strength and stability.
It improves vehicle operation safety, reduces overall weight by 21%, improves integration, ensures the stability of the connection between the cab and the chassis, avoids cracks at the welding site, and optimizes space utilization.
Smart Images
Figure CN223278838U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of automobile parts, and in particular relates to a front leaf spring rear bracket used in heavy trucks. Background Art
[0002] The elastic elements in the suspension systems of existing heavy-duty vehicles are mostly leaf springs. The front leaf spring is typically fixed at the front end, with a floating lug at the rear end. This is especially true for wide-body mining vehicles, where the front axle bears approximately 30% of the vehicle's weight. This places significant stress on the rear bracket of the front leaf spring, necessitating the use of resilient and robust components. Trucks carry large load capacities, placing high demands on the structural strength of the frame. However, since the front of the frame houses the engine and transmission, the front leaf spring system requires numerous mounting holes, a wide control range, and high weight, making stability difficult to ensure. Furthermore, the inconsistent mounting positions of the various components make subsequent maintenance difficult. Therefore, a leaf spring bracket that can be integrated and assembled to meet vehicle layout requirements while conserving installation space is urgently needed. Utility Model Content
[0003] In order to solve the technical problems existing in the prior art, the utility model provides a truck front leaf spring rear bracket with high integration, good stability and light weight.
[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a truck front leaf spring rear bracket, including an upper bracket and a lower bracket, and the upper bracket and the lower bracket are connected through an intermediate bracket.
[0005] Four first bases are provided on the upper bracket. The first bases are columnar structures. First connecting holes are provided on the first bases. First weight-reducing through holes are formed between the four first bases.
[0006] The middle bracket is connected to the upper bracket via two second ribs located on the back of the middle bracket. While ensuring structural strength, a first slope is provided on one side of the middle bracket, and a second slope is provided on the other side, further reducing its weight. The middle bracket is also equipped with multiple second bases, each with a second connection hole.
[0007] The lower bracket is provided with a first inclined plate and a second inclined plate, which are located on either side of the lower bracket. The outer corners of the first inclined plate are rounded, and the first inclined plate is provided with two third connecting holes. The outer corners of the second inclined plate are rounded, and the second inclined plate is provided with two third connecting holes. The front sides of the first and second inclined plates are connected by an L-shaped bracket, which is placed between the first and second inclined plates. The bottom of the L-shaped bracket is provided with an elastic connecting hole, and the lower end of the elastic connecting hole is provided with an opening. The diameter of the elastic connecting hole is adjustable to facilitate the passage of the connecting shaft. The back sides of the first and second inclined plates are connected by a back plate, which is provided with a fourth connecting hole. The elastic connecting hole is arranged coaxially with the fourth connecting hole. A gap is left between the L-shaped bracket and the back plate, further reducing the overall weight.
[0008] The four first bases are arranged in a square shape, and adjacent first bases are connected by first ribs. The width of the first ribs is smaller than that of the first bases. Under the premise of meeting the structural strength, the stability is good and the weight is light.
[0009] The middle bracket is provided with a triangular weight-reducing groove, a first square weight-reducing groove, a second square weight-reducing groove, and a third square weight-reducing groove. Four fourth square weight-reducing grooves are arranged side by side on the middle bracket. The triangular weight-reducing groove and the first square weight-reducing groove are placed in the same row, and the triangular weight-reducing groove and the first square weight-reducing groove are placed at the top end of the middle bracket; the second square weight-reducing groove and the third square weight-reducing groove are placed in the same row, and the second square weight-reducing groove and the third square weight-reducing groove are placed in the middle of the middle bracket; the four fourth square weight-reducing grooves are placed in the same row, and the four fourth square weight-reducing grooves are placed at the bottom of the middle bracket.
[0010] In order to further reduce the weight of the L-shaped bracket, a fifth weight-reducing groove is provided on the L-shaped bracket along the structure of the L-shaped bracket.
[0011] In order to further reduce the weight of the back plate, a sixth weight-reducing groove is provided on the back plate along the structure of the back plate.
[0012] Compared with the prior art, the specific beneficial effects of the present invention are embodied in the following: the present invention is a new platform heavy-duty truck chassis cab connection suspension, which ensures the connection stability of the cab balance airbag and the chassis shock absorption system, avoids the phenomenon that the welding parts of the original welded parts are prone to cracking under long-term bumpy working conditions, and improves the vehicle operation safety; the present invention optimizes the overall structure by arranging hollow structures and reinforcing ribs, and the unit weight of the workpiece is reduced by 21% compared with before optimization; the present invention integrates the connection of the cab shock absorption, leaf springs, Yuanbao beams, and post-processing systems into one, with a high degree of integration and good stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional diagram of the present utility model.
[0014] Figure 2 It is the main view of the utility model.
[0015] Figure 3 It is a rear view of the present invention.
[0016] Figure 4 It is a right view of the utility model.
[0017] In the figure, 1 is an upper bracket, 11 is a first base, 12 is a first connecting hole, 13 is a first weight-reducing through hole, 14 is a second rib plate, 15 is a first rib plate, 2 is a lower bracket, 21 is a first inclined plate, 22 is a second inclined plate, 23 is a third connecting hole, 24 is an L-shaped bracket, 25 is a back plate, 26 is a fourth connecting hole, 27 is a fifth weight-reducing groove, 28 is a sixth weight-reducing groove, 3 is an intermediate bracket, 31 is a first inclined plane, 32 is a second inclined plane, 33 is a second base, 34 is a second connecting hole, 35 is a triangular weight-reducing groove, 36 is a first square weight-reducing groove, 37 is a second square weight-reducing groove, 38 is a third triangular weight-reducing groove, and 39 is a fourth square weight-reducing groove. DETAILED DESCRIPTION
[0018] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.
[0019] like Figure 1-4 As shown, a truck front leaf spring rear bracket includes an upper bracket 1 and a lower bracket 2, and the upper bracket 1 and the lower bracket 2 are connected via an intermediate bracket 3.
[0020] Four first bases 11 are provided on the upper bracket 1. The first base 11 is a columnar structure. A first connecting hole 12 is provided on the first base 11. On the premise of ensuring the installation strength of the upper bracket 1, the four first bases 11 together form a first weight-reducing through hole 13 to reduce the weight of the upper bracket 1.
[0021] The intermediate bracket 3 is connected to the upper bracket 1 via two second ribs 14, which are arranged in parallel and located on the back of the intermediate bracket 3. To ensure the structural strength of the intermediate bracket 3, a first inclined surface 31 is provided on one side of the intermediate bracket 3, and a second inclined surface 32 is provided on the other side. The length of the first inclined surface 31 is greater than that of the second inclined surface 32, further reducing the weight of the intermediate bracket 3. The intermediate bracket 3 is provided with multiple second bases 33, each of which has a second connection hole 34.
[0022] The lower bracket 2 is provided with a first inclined plate 21 and a second inclined plate 22. The first inclined plate 21 and the second inclined plate 22 are arranged on both sides of the lower bracket 2. The outer corners of the first inclined plate 21 are rounded, and two third connecting holes 23 are provided on the first inclined plate 21. The outer corners of the second inclined plate 22 are rounded, and two third connecting holes 23 are provided on the second inclined plate 22.
[0023] The front sides of the first and second inclined plates 21 and 22 are connected by an L-shaped bracket 24, which is positioned between the first and second inclined plates 21 and 22. The top of the L-shaped bracket 24 is positioned higher than the first inclined plate 21. The bottom of the L-shaped bracket 24 is provided with an elastic connection hole 29, which has an opening at its lower end. The diameter of the elastic connection hole 29 is adjustable to facilitate the passage of the connecting shaft. The back sides of the first and second inclined plates 21 and 22 are connected by a back plate 25, which is provided with a fourth connection hole 26. The elastic connection hole 29 is coaxially arranged with the fourth connection hole 26. A gap is left between the L-shaped bracket 24 and the back plate 25 to facilitate the installation of the connecting shaft and further reduce the overall weight.
[0024] The four first bases 11 are arranged in a square shape. Adjacent first bases 11 are connected by first ribs 15. The width of the first ribs 15 is smaller than that of the first base 11. Under the premise of meeting the structural strength, the stability is good and the weight is light.
[0025] The intermediate bracket 3 is provided with a triangular weight-reducing groove 35, a first square weight-reducing groove 36, a second square weight-reducing groove 37 and a third triangular weight-reducing groove 38. The intermediate bracket 3 is provided with four fourth square weight-reducing grooves 39 arranged side by side. The shapes of the triangular weight-reducing groove 35, the first square weight-reducing groove 36, the second square weight-reducing groove 37, the third triangular weight-reducing groove 38 and the four fourth square weight-reducing grooves 39 are arranged in accordance with the structural layout of each second base 33.
[0026] The triangular weight-reducing groove 35 and the first square weight-reducing groove 36 are placed in the same row, the inner corners of the triangular weight-reducing groove 35 and the first square weight-reducing groove 36 are rounded, and the triangular weight-reducing groove 35 and the first square weight-reducing groove 36 are placed at the uppermost end of the intermediate bracket 3; the inner corners of the second square weight-reducing groove 37 and the third square weight-reducing groove 38 are rounded, the second square weight-reducing groove 37 and the third square weight-reducing groove 38 are placed in the same row, and the second square weight-reducing groove 37 and the third square weight-reducing groove 38 are placed in the middle of the intermediate bracket 3; the four fourth square weight-reducing grooves 39 are placed in the same row, and the four fourth square weight-reducing grooves 39 are placed at the lower part of the intermediate bracket 3.
[0027] In order to further reduce the weight of the L-shaped bracket 24 , a fifth weight-reducing groove 27 is provided on the L-shaped bracket 24 in accordance with the structure of the L-shaped bracket 24 .
[0028] In order to further reduce the weight of the back plate 25 , a sixth weight-reducing groove 28 is provided on the back plate 25 in accordance with the structure of the back plate 25 .
[0029] The utility model adopts ZGD840-1030 cast steel material, and the overall safety factor is increased by 25%.
[0030] The upper bracket 1 of the utility model supports the cab balancing airbag, the middle bracket 3 is fixedly connected to the frame, and the lower bracket 2 is equipped with the front axle shock absorption system. The utility model integrates the cab shock absorption, leaf spring, Yuanbao beam, and post-processing system into one, with a high degree of integration and good stability.
[0031] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims
1. A truck front leaf spring rear bracket, characterized in that: It comprises an upper bracket (1) and a lower bracket (2), wherein the upper bracket (1) and the lower bracket (2) are connected via an intermediate bracket (3); Four first bases (11) are provided on the upper bracket (1), first connection holes (12) are provided on the first bases (11), and first weight-reducing through holes (13) are formed between the four first bases (11); The intermediate bracket (3) is connected to the upper bracket (1) via two second ribs (14); a first inclined surface (31) is provided on one side of the intermediate bracket (3); a second inclined surface (32) is provided on the other side of the intermediate bracket (3); a plurality of second bases (33) are provided on the intermediate bracket (3); and second connecting holes (34) are provided on the second bases (33); The lower bracket (2) is provided with a first inclined plate (21) and a second inclined plate (22), the first inclined plate (21) is provided with two third connecting holes (23), the second inclined plate (22) is provided with two third connecting holes (23), the front sides of the first inclined plate (21) and the second inclined plate (22) are connected via an L-shaped bracket (24), the bottom of the L-shaped bracket (24) is provided with an elastic connecting hole (29), the back sides of the first inclined plate (21) and the second inclined plate (22) are connected via a back plate (25), the back plate (25) is provided with a fourth connecting hole (26), and a gap is left between the L-shaped bracket (24) and the back plate (25).
2. The truck front leaf spring rear bracket according to claim 1, characterized in that: Adjacent first bases (11) are connected via first ribs (15), and the width of the first ribs (15) is smaller than the width of the first bases (11).
3. The truck front leaf spring rear bracket according to claim 2, characterized in that: The four first bases (11) are arranged in a square shape.
4. The truck front leaf spring rear bracket according to claim 3, characterized in that: The intermediate bracket (3) is provided with a triangular weight-reducing groove (35), a first square weight-reducing groove (36), a second square weight-reducing groove (37) and a third triangular weight-reducing groove (38), and the intermediate bracket (3) is provided with four fourth square weight-reducing grooves (39) arranged side by side.
5. The truck front leaf spring rear bracket according to claim 4, characterized in that: The L-shaped bracket (24) is provided with a fifth weight-reducing groove (27).
6. The truck front leaf spring rear bracket according to claim 5, characterized in that: A sixth weight-reducing groove (28) is provided on the back plate (25).