Core body structure for enhancing transverse rigidity of heavy truck power suspension and heavy truck power suspension thereof

Abstract

The utility model relates to a core structure for enhancing the transverse rigidity of a power suspension of a heavy truck, which comprises a core body, the core body comprises a top surface, a bottom surface arranged opposite to the top surface, and a side surface tightened and connected from the top surface to the bottom surface to the center, and the side surface is a cambered surface recessed towards the center, so that the whole bottom surface forms an X-shaped structure; and the top surface, the side surfaces and the bottom surface are enclosed to form an outer surface and a mounting surface. Starting from the whole structure, the side faces are arranged to be the curved surface structures, the curved surface structures on the two sides are bent towards the center, the weight of the core body can be reduced, the rubber deformation direction of rubber between the shell and the core body can be effectively limited when the rubber is transversely extruded, the transverse rigidity of the whole structure is improved, meanwhile, comfort is taken into consideration, and the service life of the core body is prolonged. And the rigidity in other directions cannot be influenced.

Description

Technical Field

[0001] The utility model relates to the field of heavy truck powertrain suspension systems, and in particular to a core structure for enhancing the lateral rigidity of a heavy truck powertrain suspension and a heavy truck powertrain suspension. Background Art

[0002] Most existing heavy trucks use a fuel engine system, and the power suspension cushion assembly is used to connect the powertrain and the frame and play a vibration reduction role.

[0003] Existing powertrain suspension cushions mostly use wedge-shaped suspension structures, and the main structural form is that the rubber blocks on both sides of the core play the main role in vibration reduction. The vibration reduction in the lateral direction (Y direction) is mainly played by the rubber blocks on both sides, which rely on their shear deformation to resist the movement in the Y direction.

[0004] Due to the low lateral stiffness, the entire powertrain will have a relatively large swing during the engine start-stop process, causing discomfort to the driver. In order to increase the lateral stiffness, the stiffness in other directions is increased synchronously, which will cause the vibration isolation of the whole vehicle to deteriorate significantly; at the same time, the overall load-bearing rubber volume of the wedge-shaped suspension structure is small, and its reliability has certain risks.

[0005] At present, the lightweight of heavy truck power suspension is a development trend. How to make the product lightweight while ensuring the overall rigidity of the product is an important direction of research and design. The lightweight and rigidity of the suspension do have a contradictory relationship in automobile design, and a balance can be achieved through reasonable design and optimization.

[0006] CN201922447615.X discloses a novel engine suspension, including an exoskeleton, an inner frame, a rubber buffer block and a fixing plate arranged on the upper and lower sides of the exoskeleton, the exoskeleton and the inner frame are vulcanized together through the rubber buffer block, and the fixing plate, the middle part of the exoskeleton and the upper surface of the inner frame are respectively provided with through-holes for embedded nuts, the two ends of the embedded nut holes are wider than the middle part, and an integral embedded nut is cast in the embedded nut holes, and the embedded nut is composed of a threaded barrel and annular protrusions arranged at both ends of the threaded barrel, and the diameter of the annular protrusion is greater than the diameter of the threaded barrel in the middle part. The utility model greatly improves the service life of the shock-absorbing pad, has significant economic advantages and practical advantages, the novel engine suspension has an embedded nut, the two ends are positioned, and the anti-rotation and anti-pull-off performance are high after being stressed.

[0007] The above-mentioned patents also mainly improved the outer shell frame and the inner shell frame, but while increasing the Y-direction stiffness, they did not take into account the comfort and reliability of the entire vehicle. Existing heavy-duty truck powertrain suspension cushions mostly use wedge-shaped suspensions, and some use block-shaped suspension supports, which have poor constraints on the engine start-stop process, and there are certain risks in reliability during the movement of the entire vehicle. Therefore, it is necessary to design a solution to enhance the lateral stiffness of the heavy-duty truck power suspension without affecting the stiffness characteristics in other directions, and to make the entire product lightweight while ensuring stiffness, which can effectively attenuate vibrations under various working conditions, thereby improving the comfort and reliability of the entire vehicle. Utility Model Content

[0008] In view of the shortcomings of the prior art, the utility model discloses a core structure for enhancing the lateral stiffness of the heavy truck power suspension, which changes the inherent thinking that the side of the core is a planar structure in the prior art, and sets the side of the core to be a structure concave from both sides to the center, which can effectively limit the movement direction of the rubber installed on the side of the core. The shell and the side wall of the wedge-shaped core are enclosed to form a vulcanization channel, which is an arched structure protruding toward the center, and can inhibit the rubber injected into the vulcanization channel from moving in the lateral direction; this method can not only effectively improve the lateral stiffness of the entire product, but also will not affect the performance in other directions, and is more suitable for use in actual working conditions.

[0009] The technical means adopted by the utility model to solve the above problems are:

[0010] Disclosed is a core structure for enhancing the lateral rigidity of a heavy truck power suspension, comprising a core body, wherein the core body comprises a top surface and a bottom surface arranged opposite to the top surface, and side surfaces which are tightened and connected from the top surface to the bottom surface toward the center, wherein the side surfaces are arc surfaces which are concave toward the center, so that the entire bottom surface forms an X-shaped structure; the top surface, the side surfaces and the bottom surface are enclosed to form an outer surface and a mounting surface.

[0011] The core structure of the utility model for enhancing the lateral stiffness of the heavy-duty truck power suspension starts with the overall structure, and sets the side surfaces as curved structures so that the curved structures on both sides bend toward the center, which can not only reduce the weight of the core body, but also effectively limit the deformation direction of the rubber between the shell and the core body when it is subjected to lateral extrusion, thereby improving the lateral stiffness of the entire structure while taking into account comfort, and will not affect the stiffness in other directions.

[0012] Furthermore, the top surface includes a limit cavity arranged in the transverse direction. The setting of the limit cavity can effectively reduce weight, and can also cooperate with some designs on the top of the shell to provide a storage space for the top of the shell, so that the entire suspension structure is compactly arranged and the space utilization rate is high.

[0013] Furthermore, the limiting cavity is a rectangular cavity structure extending to one side of the mounting surface, and a solid structure is provided on the other side of the limiting cavity for installing the positioning pin hole and the mounting hole. The design of the solid structure ensures the bearing capacity of the entire core body while providing an installation position for other accessories.

[0014] Furthermore, the side surface includes a top surface arc-shaped arm close to the top surface and a bottom surface arc-shaped arm close to the bottom surface, and the curvature of the top surface arc-shaped arm is smaller than that of the bottom surface arc-shaped arm. This structure can realize the difference between the top surface and the bottom surface structure. The top surface structure needs to install accessories such as positioning pins, so the top surface requires a larger area, while the bottom surface mainly cooperates with the top surface to realize the concave arc surface construction of the side surface, so it is designed in a way that the curvature of the top surface arc-shaped arm is smaller than that of the bottom surface arc-shaped arm.

[0015] Furthermore, the bottom surface includes a central surface and an edge portion, wherein the central surface is a plane and the edge portion is a curved surface protruding from the central surface. This structure can effectively vulcanize the bottom surface of the core body and the rubber into one, and has high reliability and is not easy to be damaged during use.

[0016] Furthermore, a weight-reducing groove 1 with an irregular aperture is provided between the entity structure and the bottom surface, and the weight-reducing groove 1 is a slot-shaped hole that gradually changes from the outside to the inside.

[0017] Furthermore, the slot-shaped hole is exposed on the outer surface, and is a semi-enclosed slot body with both the bottom and the surface open, and the inner slot-shaped hole is a rectangular or irregular cavity. The weight-reducing slot 1 is a different structure arrangement from the outside to the inside, so that the hole wall of the weight-reducing hole is arranged in layers from thin to thick, while ensuring the bearing capacity and strength of the entire core body, it is as lightweight as possible.

[0018] Furthermore, the solid structure protrudes from the outer surface in the transverse direction. This design is designed for assembly requirements and further ensures the strength of the solid structure.

[0019] Furthermore, a plurality of weight-reducing grooves 2 are extended from one side of the mounting surface toward the outer surface.

[0020] Another purpose of the utility model is to disclose a core structure for enhancing the lateral rigidity of a heavy truck power suspension and used in a heavy truck power suspension.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The core structure for enhancing the lateral stiffness of the heavy-duty truck power suspension changes the inherent idea that the core side is a planar structure in the prior art, and sets the side of the core to be a structure that is concave from both sides to the center, which can effectively limit the movement direction of the rubber installed on the side of the core. The shell and the side wall of the wedge-shaped core are enclosed to form a vulcanization channel, which is an arched structure protruding toward the center, which can inhibit the rubber injected into the vulcanization channel from moving in the lateral direction; this method can not only effectively improve the lateral stiffness of the entire product, but also will not affect the performance in other directions, and is more suitable for use in actual working conditions.

[0023] The core structure of the utility model for enhancing the lateral stiffness of the heavy-duty truck power suspension starts with the overall structure, and sets the side surfaces as curved structures so that the curved structures on both sides bend toward the center, which can not only reduce the weight of the core body, but also effectively limit the deformation direction of the rubber between the shell and the core body when it is subjected to lateral extrusion, thereby improving the lateral stiffness of the entire structure while taking into account comfort, and will not affect the stiffness in other directions. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a schematic structural diagram of the core structure for enhancing the lateral stiffness of the heavy truck power suspension described in Example 1.

[0025] Figure 2 This is a schematic structural diagram from another angle of the core structure for enhancing the lateral stiffness of the heavy truck power suspension described in Example 1.

[0026] Figure 3 This is a schematic structural diagram of the core structure for enhancing the lateral stiffness of the heavy truck power suspension as described in Example 2.

[0027] Figure 4 This is a schematic structural diagram from another angle for enhancing the lateral stiffness of the heavy truck power suspension described in Example 2.

[0028] Among them, 1-top surface, 2-bottom surface, 21-center surface, 22-edge part, 3-side surface, 31-top surface arc arm, 32-bottom surface arc arm, 6-solid structure, 61-weight reduction groove one, 62-weight reduction groove two, 7-outer surface, 8-limiting cavity, 9-installation surface, 100-positioning pin hole, 200-installation hole. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings. The accompanying drawings are only used for exemplary descriptions, and are only schematic diagrams, not actual pictures, and cannot be understood as limiting the present patent; in order to better illustrate the embodiments of the utility model, some parts of the accompanying drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the accompanying drawings may be omitted. Example 1

[0030] like Figure 1-Figure 2 As shown, the core structure of the embodiment for enhancing the lateral stiffness of the heavy truck power suspension includes a core body, the core body includes a top surface 1 and a bottom surface 2 arranged opposite to the top surface 1, and a side surface 3 connected from the top surface 1 to the bottom surface 2 toward the center, the side surface 3 is an arc surface concave toward the center, so that the entire bottom surface 2 forms an X-shaped structure; the top surface 1, the side surface 3 and the bottom surface 2 are enclosed to form an outer surface 7 and a mounting surface 9. A solid structure 6 is provided on one side of the top surface 1 close to the outer surface 7, and the solid structure 6 protrudes from the outer surface 7 in the lateral direction. This design is designed for assembly requirements and further ensures the strength of the solid structure 6. The solid structure 6 is used to install the positioning pin hole 100 and the mounting hole 200. While ensuring the bearing capacity of the entire core, it provides an installation position for other accessories.

[0031] The side surface 3 in this embodiment includes a top surface arc-shaped arm 31 close to the top surface 1 and a bottom surface arc-shaped arm 32 close to the bottom surface 2. The curvature of the top surface arc-shaped arm 31 is smaller than that of the bottom surface arc-shaped arm 32. This structure can realize the difference between the top surface and the bottom surface structure. The top surface structure needs to install accessories such as positioning pins, so the top surface requires a larger area, while the bottom surface mainly cooperates with the top surface to realize the concave arc surface construction of the side surface, so it is designed in a way that the curvature of the top surface arc-shaped arm is smaller than that of the bottom surface arc-shaped arm.

[0032] The bottom surface 2 includes a center surface 21 and an edge portion 22. The center surface 21 is a plane, and the edge portion 22 is a curved surface protruding from the center surface. This structure can effectively vulcanize the bottom surface of the core body and the rubber into one, which is highly reliable and not easy to damage during use.

[0033] A weight-reducing groove 61 with an irregular aperture is provided between the solid structure 6 and the bottom surface 2. The weight-reducing groove 61 is exposed on the outer surface 7 and is a slot-shaped hole that gradually changes from the outside to the inside. The slot-shaped hole 61 is a semi-enclosed slot body with both the bottom and the surface open, and the inner slot-shaped hole 61 is a rectangular or irregular cavity. The weight-reducing groove 61 in this embodiment is arranged with different structures from the outside to the inside, so that the hole wall of the weight-reducing hole is arranged in layers from thin to thick, while ensuring the bearing capacity and strength of the entire core body, it is as lightweight as possible.

[0034] At the same time, in order to reduce weight, a plurality of weight-reducing grooves 62 are extended from one side of the mounting surface 9 to the outer surface 7, and the weight-reducing grooves 61 and 62 are not connected. In this embodiment, they are staggered to ensure the strength of the entire core body.

[0035] The core structure for enhancing the lateral stiffness of the heavy-duty truck power suspension starts with the overall structure, and sets the side 3 as a curved structure so that the curved structures on both sides bend toward the center, which can not only reduce the weight of the core, but also effectively limit the deformation direction of the rubber between the shell and the core when it is subjected to lateral extrusion. While improving the lateral stiffness of the entire structure, it also takes into account comfort and will not affect the stiffness in other directions. Example 2

[0036] like Figure 3-Figure 4 As shown, the core structure of the embodiment for enhancing the lateral stiffness of the heavy truck power suspension is similar to that of the embodiment 1, except that the top surface 1 includes a limit cavity 8 arranged along the lateral direction, and the limit cavity 8 of the embodiment is a rectangular cavity structure extending to one side of the mounting surface 9, and a solid structure 6 is arranged side by side on the other side of the limit cavity 8. The setting of the limit cavity 6 can effectively reduce weight, and can also cooperate with some designs on the top of the shell to provide a holding space for the top of the shell, so that the entire suspension structure is compactly arranged and the space utilization rate is high.

[0037] The above are only embodiments of the utility model, and the utility model is not limited to the fields involved in this implementation case. The common knowledge such as the known specific structure and characteristics in the scheme is not described in detail here. It should be pointed out that for those skilled in the art, several deformations and improvements can be made without departing from the content of the utility model, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A core structure for enhancing the lateral rigidity of a heavy truck power suspension, comprising a core body, characterized in that: The core body comprises a top surface (1), a bottom surface (2) arranged opposite to the top surface (1), and a side surface (3) connected from the top surface (1) to the bottom surface (2) and tightened toward the center, wherein the side surface (3) is an arc surface concave toward the center, so that the entire bottom surface (2) forms an X-shaped structure; the top surface (1), the side surface (3) and the bottom surface (2) are enclosed to form an outer surface (7) and a mounting surface (9).

2. The core structure for enhancing the lateral rigidity of a heavy truck power suspension according to claim 1 is characterized in that: The top surface (1) comprises a limiting cavity (8) arranged along the transverse direction.

3. The core structure for enhancing the lateral rigidity of a heavy truck power suspension according to claim 2 is characterized in that: The limiting cavity (8) is a rectangular cavity structure extending to one side of the mounting surface (9), and a solid structure (6) is provided on the other side of the limiting cavity (8) for mounting the positioning pin hole (100) and the mounting hole (200).

4. The core structure for enhancing the lateral rigidity of a heavy truck power suspension according to claim 1 is characterized in that: The side surface (3) comprises a top surface arc-shaped arm (31) close to the top surface (1) and a bottom surface arc-shaped arm (32) close to the bottom surface (2), and the curvature of the top surface arc-shaped arm (31) is smaller than the curvature of the bottom surface arc-shaped arm (32).

5. The core structure for enhancing the lateral rigidity of a heavy truck power suspension according to claim 1 is characterized in that: The bottom surface (2) comprises a central surface (21) and an edge portion (22); the central surface (21) is a plane, and the edge portion (22) is a curved surface protruding from the central surface.

6. The core structure for enhancing the lateral rigidity of a heavy truck power suspension according to claim 3 is characterized in that: A weight-reducing groove (61) is provided between the solid structure (6) and the bottom surface (2); the weight-reducing groove (61) is a slot-shaped hole that gradually changes from the outside to the inside.

7. The core structure for enhancing the lateral rigidity of a heavy truck power suspension according to claim 6 is characterized in that: The slot-shaped hole is exposed on the outer surface (7) and is a semi-enclosed slot body with both the bottom and the surface open, and the inner slot-shaped hole is a rectangular or irregular cavity.

8. The core structure for enhancing the lateral rigidity of a heavy truck power suspension according to claim 7 is characterized in that: The solid structure (6) protrudes from the outer surface (7) in the transverse direction.

9. The core structure for enhancing the lateral rigidity of a heavy truck power suspension according to any one of claims 1 to 8, characterized in that: A plurality of weight-reducing grooves (62) are provided on one side of the mounting surface (9) extending toward the outer surface (7).

10. A heavy truck power suspension, characterized in that: The invention comprises a core structure for enhancing the lateral rigidity of a heavy truck power suspension as described in claim 9.

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