Heavy truck power suspension cushion capable of improving transverse rigidity of product

Abstract

The utility model relates to the field of heavy truck power assembly suspension systems, in particular to a heavy truck power suspension cushion capable of improving the transverse rigidity of a product, which comprises a core body and a shell arranged outside the core body, a rubber vulcanized body is vulcanized between the core body and the shell, the rubber vulcanized body comprises a rubber main body and a press-fitting plate which are vulcanized into a whole, and the press-fitting plate is arranged on the core body. The rubber main body wraps the side face of the core body, the outer wall face, combined with the rubber main body, of the core body is of an inwards-concave structure, the inwards-concave structure is oppositely arranged to define an X-shaped structure, the side, combined with the rubber main body, of the shell and the inwards-concave structure jointly serve as a containing space provided by the rubber main body, and the press-fitting plate is embedded in the rubber main body. Transverse movement of the rubber body can be suppressed. According to the heavy truck power suspension cushion capable of improving the transverse rigidity, the rubber body and the shell are pressed and reversely buckled to form a final product, limiting protection of the shell and the vulcanized body in the X direction, the Y direction and the Z direction can be achieved, the maximum movement stroke of rubber is restrained, therefore, a rubber main body structure is effectively protected, and the service life of the rubber main body structure can be greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the field of heavy truck powertrain suspension systems, and in particular to a heavy truck powertrain suspension cushion capable of improving the lateral rigidity of a product. 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 swing greatly 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 significantly deteriorate the vibration isolation of the entire vehicle; 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] 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.

[0006] CN201520041873.7 discloses a novel lightweight composite structure engine suspension, in which an inner frame with a triangular cross section is provided in the middle of an outer frame with a trapezoidal cross section, the three sides of the inner frame are respectively parallel to the three sides of the outer frame, cylindrical rubber bodies are respectively provided on both sides between the outer frame and the inner frame, and connecting plates are respectively installed on both sides and the upper part of the outer frame. The utility model effectively limits the deformation of the engine suspension under harsh working conditions, controls the displacement and vibration of the powertrain, and improves the service life of the engine suspension. Both the outer frame and the inner frame adopt sheet metal stamping structure, which can reduce the weight by more than 30% compared with ductile iron material.

[0007] The above-mentioned patents also mainly improved the outer shell frame and the inner shell frame, but the Y-direction stiffness was increased without taking into account the comfort and reliability of the vehicle. The 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 vehicle. Under the existing solution, in order to increase the lateral stiffness, the stiffness in other directions is increased simultaneously, which seriously affects the comfort of the vehicle.

[0008] Therefore, it is necessary to design a suspension solution that can increase the Y-direction stiffness without affecting the stiffness characteristics in other directions, which can effectively attenuate vibrations under various working conditions, thereby improving the comfort and reliability of the entire vehicle. Utility Model Content

[0009] In view of the deficiencies of the prior art, the utility model discloses a heavy-duty truck power suspension cushion assembly. Through the design of the internal structure of the shell and the core, it solves the problem that under the existing solution, the stiffness in other directions is increased synchronously in order to increase the lateral stiffness, which seriously affects the comfort of the whole vehicle. On the one hand, the utility model heavy-duty truck power suspension cushion assembly can be designed with different lateral stiffnesses to match the needs of the powertrain. On the other hand, since the stiffness in other directions is less affected, the vibration isolation effect on the powertrain system can be improved; at the same time, the lightweight design of the hollow shell also significantly reduces the total weight of the product.

[0010] The technical means adopted by the utility model to solve the above problems are:

[0011] Disclosed is a heavy-duty truck power suspension cushion for improving the lateral rigidity of a product. The cushion comprises a core body and a shell body arranged outside the core body. A rubber vulcanized body is vulcanized between the core body and the shell body. The rubber vulcanized body comprises a rubber body and a pressing plate that are vulcanized into one. The rubber body wraps around the side of the core body. The outer wall surface where the core body and the rubber body are combined is a concave structure. The concave structures are arranged relatively to enclose an X-shaped rubber accommodating cavity structure at the bottom of the core body. The combined side of the shell body and the rubber body and the concave structure together provide an accommodating space for the rubber body. The pressing plate is embedded in the rubber body to inhibit the lateral movement of the rubber body.

[0012] The heavy-duty truck power suspension cushion that improves the lateral stiffness of the product fully wraps the rubber body on the side of the core, and sets the outer wall surface where the core and the rubber body are combined as a concave structure, so that the entire rubber body bulges toward one side of the core. When the entire rubber body is subjected to lateral force, the concave structure restricts the rubber and can inhibit the lateral movement of the rubber, thereby increasing the lateral (Y direction) stiffness of the product and having a good inhibitory effect on the engine start-stop process.

[0013] Furthermore, the shell includes an open end and a mounting end, and the rubber vulcanized body enters the mounting groove of the open end of the shell and is mounted inside the shell. The core and shell of the utility model can be made of cast steel, ductile iron or cast aluminum, or PA66+glass fiber; they are integrally formed by casting and play the role of connecting the engine bracket and the frame respectively.

[0014] Furthermore, the press-fit plate includes a connecting plate and a protrusion from the shell to the core body, and the combined side of the shell and the rubber body is an arched structure protruding toward the core body, which together with the concave structure provides a fan-shaped accommodation space for the rubber body.

[0015] The press-fit plate is a part of the structure that is detachably connected to the mounting groove of the shell, and the press-fit plate is a protruding plate from the shell to the core. The press-fit bottom plate is set as a protruding plate. When subjected to force in the Y direction, the protruding plate can decompose the Y-direction force, thereby reducing the Y-direction force acting on the shell, thereby ensuring the comfort and reliability of the entire suspension product.

[0016] Furthermore, the concave structure and the press-fit plate are both streamlined, and the press-fit plate includes a connecting plate and a protrusion fixedly arranged on the connecting plate. The connecting plate and the housing are integrated by press-fitting, and the bending direction of the protrusion is consistent with the bending direction of the concave structure. In order to ensure the vibration reduction performance of the entire rubber body, the bending direction of the protrusion is consistent with the bending direction of the concave structure, which can better accommodate the rubber body and limit the movement direction of the rubber body. This structure can inhibit the rubber from moving in the lateral direction, thereby increasing the lateral (Y direction) stiffness of the product.

[0017] Furthermore, a vertical line is drawn from the highest point of the protrusion to the connecting plate, and the vertical line can divide the protrusion and the connecting plate equally. This arrangement makes the bearing capacity of the protrusion stronger and ensures the strength of the entire rubber vulcanized body.

[0018] Furthermore, a limit metal block is provided at the highest point of the protrusion of the protrusion to adjust the change of the lateral stiffness. The press plate is generally designed to be stamped, and the material selection can be steel or aluminum for stamping. A limit metal block is added in the middle to adjust the change of the lateral stiffness.

[0019] Furthermore, the limiting metal block is arranged on the outer surface of the pressing plate on one side close to the core body.

[0020] Furthermore, the inner concave structure is a folded surface segment, and the press-fit plate is a segmented special-shaped structure, including a connecting plate and a frame body parallel to the connecting plate, and the connecting plate and the frame body are connected by a bevel body.

[0021] Furthermore, the edge of the shell is provided with hollow weight-reducing holes, which can not only reduce the weight of the shell itself, but also facilitate the insertion of the rubber body into its slot from different directions, thereby facilitating the installation of the vulcanized body.

[0022] Compared with the prior art, the utility model has the following beneficial effects:

[0023] The heavy-duty truck power suspension cushion of the utility model improves the lateral stiffness of the product, and solves the problem that under the existing scheme, the stiffness in other directions is increased synchronously in order to increase the lateral stiffness, thus seriously affecting the comfort of the whole vehicle, through the design of the internal structure of the shell and the core.

[0024] The heavy-duty truck power suspension cushion assembly of the utility model focuses on the design of lateral stiffness. By matching different inner layer arrangements and designing different lateral (Y-direction) stiffnesses, the vibration of the entire vehicle during movement is suppressed.

[0025] The heavy-duty truck power suspension cushion assembly solution of the utility model can achieve matching of different stiffnesses under the same set of vulcanization molding dies, has high adaptability and high solution adjustment efficiency, and can greatly shorten the verification cycle.

[0026] The final product formed by pressing and buckling the rubber body and the shell in the heavy-duty truck power suspension cushion that improves the lateral stiffness of the product can achieve limit protection of the shell and the vulcanized body in the three directions of X / Y / Z, restrict the maximum movement stroke of the rubber itself, thereby effectively protecting the rubber main structure and greatly extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the three-dimensional overall structure of the heavy-duty truck power suspension cushion for improving the lateral stiffness of the product as described in Example 1.

[0028] Figure 2 for Figure 1 A schematic diagram of the main structure of the heavy truck power suspension cushion for improving the lateral stiffness of the product.

[0029] Figure 3 for Figure 1 A schematic diagram of the assembly structure of the heavy truck power suspension cushion assembly.

[0030] Figure 4 This is a rubber cross-sectional view of the power suspension in the AA direction of the heavy truck power suspension cushion assembly described in Example 1.

[0031] Figure 5 This is a rubber cross-sectional view of the power suspension in the AA direction of the heavy truck power suspension cushion assembly described in Example 2.

[0032] Figure 6 This is a rubber cross-sectional view of the power suspension in the AA direction of the heavy truck power suspension cushion assembly described in Example 3.

[0033] Among them, 1-rubber vulcanized body, 11-core body, 12-rubber main body, 121-protrusion one, 122-recessed part, 13-pressing plate, 131-connecting plate, 132-protrusion, 133-inclined body, 134-skeleton body, 2-shell, 21-installing groove, 22-installing wing, 3-arch structure, 4-concave structure, 5-limiting metal block, 6-limiting block, 61-empty directions on both sides, 62-empty direction in the middle, 7-rubber limiting protrusion, 8-limiting cavity. DETAILED DESCRIPTION

[0034] 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.

[0035] The utility model discloses a heavy-duty truck power suspension cushion for improving the lateral rigidity of the product, comprising a core body 11 and a shell body 2 arranged outside the core body 11, a rubber vulcanized body 1 is vulcanized between the core body 11 and the shell body 2, the rubber vulcanized body 1 comprises a rubber main body 12 and a pressing plate 13 which are vulcanized into one, the rubber main body 12 is wrapped around the side of the core body 11, the outer wall surface where the core body 11 and the rubber main body 12 are combined is a concave structure 4, the combined side of the shell body 2 and the rubber main body 12 and the concave structure 4 together provide a containing space for the rubber main body 12, and the pressing plate 13 is embedded in the rubber main body 12 to inhibit the lateral movement of the rubber main body 12.

[0036] The utility model mainly carries out the associated design in the structure of the core body 11 and the pressing plate 13. The core body 11 is concave from the side close to the rubber to the center of the core body 11 to form an arc channel to limit the lateral movement of the rubber on both sides of the core body; at the same time, the shape of the pressing plate can be changed to be arched toward one side of the core body 11 as a whole, so that the inner cavity of the pressing plate 13 forms a bulge, and the pressing plate 13 is embedded in the rubber body; a fan-shaped structure is formed between the core body and the pressing plate, which can inhibit the lateral movement of the rubber, thereby increasing the lateral (Y direction) stiffness of the product and having a good inhibitory effect on the engine start-stop process.

[0037] The specific implementation method is as follows. Example 1

[0038] like Figure 1-Figure 4As shown, the heavy-duty truck power suspension cushion that improves the lateral stiffness of the product can suppress the lateral movement of the rubber by adjusting the core 11 of the rubber vulcanized body 1 and the corresponding structure of the shell 2, thereby increasing the lateral (Y direction) stiffness of the product and having a good inhibitory effect on the engine start-stop process. Under the premise of ensuring the load-bearing capacity of the product, the stability of the entire product is improved, ensuring the service life of the product.

[0039] The heavy-duty truck power suspension cushion for improving the lateral rigidity of the product comprises a rubber vulcanized body 1 and a shell 2 installed outside the rubber vulcanized body 1. The shell 1 is a semi-open shell. The rubber vulcanized body 1 is installed or removed at the opening of the semi-open shell. The shell 2 comprises an outer edge provided with an inwardly extending installation wing 22 and installation grooves 21 on both sides of the core 11. The rubber vulcanized body 1 comprises a core 11, a rubber main body 12, and a press plate 13 arranged inside the rubber main body 12. The core 11, the rubber main body 12 and the press plate 13 are vulcanized into one. The rubber main body 12 is wrapped around the side of the core 11. The entire rubber vulcanized body 1 is an integrated structure with a wide upper end and tightened on both sides. The entire rubber vulcanized body 1 is installed in cooperation with the middle cavity of the shell 2. Installation grooves 21 are provided on both sides of the core 11. The core 11 is inserted into the installation grooves 21. The press plate 13 is a protruding plate from the shell 2 to the core 11.

[0040] In this embodiment, the outer wall surface where the core 11 and the rubber body 12 are combined is a concave structure 4, and the combined side of the shell 2 and the rubber body 12 is an arched structure 3 protruding toward the core 11; the arched structure 3 and the concave structure 4 together provide a storage space for the rubber body 12, and the press plate 13 is embedded in the rubber body 12, which can inhibit the lateral movement of the rubber body 11, thereby improving the lateral rigidity of the product. A mounting wing 22 is provided near the top of the shell, and a limit cavity 8 is provided at the top of the core 11. The limit cavity 8 is a rectangular parallelepiped structure, and the mounting wing 22 extends into the limit cavity 8. The design of the limit cavity 8 can reduce the overall weight of the core 11, and make the spatial arrangement of the shell and the core reasonable and compact.

[0041] The inner concave structure 4 and the press-fit plate 13 in this embodiment are both streamlined. The press-fit plate 13 includes a connecting plate 131 and a protrusion 132 fixedly arranged with the connecting plate 131. The connecting plate 131 and the housing 2 are integrated by press-fitting. The bending direction of the protrusion 132 is consistent with the bending direction of the inner concave structure 4. The vertical line from the highest point of the protrusion 132 to the connecting plate 131 can divide the protrusion 132 and the connecting plate 131 equally. The press-fit plates 13 are arranged in pairs on both sides of the core 11, and the press-fit plates 13 are arranged in a V shape. A limit block 6 is arranged between the press-fit plates 13, protruding from the outer edge of the shell 2 toward the core body. The limit block 6 includes a gap with the core body 11. In order to lightweight the entire suspension cushion, a plurality of weight-reducing holes are added outside the shell, such as the two side gaps 61 and the middle gap 62 arranged on the limit block 6; a rubber limit protrusion 7 is arranged on the outer wall of the core body 11 to cooperate with the limit block 6.

[0042] The arched structure 3 in this embodiment has a square-shaped bottom surface, which is consistent with the edge structure shape of the square connecting plate 131. This design makes it easier to insert the core 11 into the installation groove 21. The arched structure 3 and the concave structure 4 cooperate to form a space for accommodating rubber that is bent in the Y direction, which can inhibit the lateral movement of the rubber, thereby increasing the lateral (Y direction) rigidity of the product.

[0043] In addition, the rubber body 12 in this embodiment is designed accordingly to increase the comfort of the entire rubber body 12, and to achieve the limit protection of the shell and the vulcanized body in the three directions of X / Y / Z. Specifically, the rubber body 12 near the top side of the shell 1 is provided with a symmetrical protrusion 121, which extends from the opening side of the shell 1 to the inside, and is symmetrically arranged in a rectangular shape, which is conducive to force bearing and enhances comfort. In addition, a recessed portion 122 is provided inwardly between the two protrusions 121, and the recessed portion 122 plays a role of avoiding, providing a space for the installation wing 22 extending downward from the shell 2. The recessed portion 122 extends into the space enclosed by the relative arch structure 3 and the outer wall of the rubber body 12. The space enclosed by the arch structure 3 and the outer wall of the rubber body 12 is just adapted to the outer wall structure of the core 11, that is, the rubber body 12 and the core 11 are fitted as a whole.

[0044] The raised portion 132 and the arched structure 3 are matched with the side surface of the core body 11, and are both structures that are raised inward from the outer surface, but there is a gap between the relative raised structures to better ensure the strength and service life of the entire suspension cushion assembly.

[0045] The shell 2 is designed to be hollow and lightweight, which can not only reduce the weight of the shell itself, but also facilitate the insertion of the rubber body into its slot from different directions, thereby facilitating the installation of the vulcanized body.

[0046] The core 11 and the shell 2 involved in this embodiment can be made of cast steel, ductile iron or cast aluminum, or PA66+glass fiber. They are integrally formed by casting and play the role of connecting the engine bracket and the frame. The bottom plate 13 involved in the utility model is generally designed to be stamped, and the material can be selected from general stamping steel or aluminum. Example 2

[0047] like Figure 5 As shown, the overall structure of the heavy truck power suspension cushion assembly of this embodiment is similar to that of embodiment 1, the difference being that the concave structure 4 is a folded surface segment, the press-fit plate 13 is a segmented special-shaped structure, and the concave structure 4 in this embodiment is a trapezoidal structure, including a connecting plate 131 and a frame body 134 parallel to the connecting plate 131, and the connecting plate 131 and the frame body 134 are connected via a bevel body 133. Example 3

[0048] like Figure 6 As shown, the overall structure of the heavy truck power suspension cushion assembly of this embodiment is similar to that of embodiment 1, except that a limiting metal block 5 is provided at the highest point of the protrusion of the protrusion 132 to adjust the change of the lateral stiffness. The limiting metal block 5 is provided on the outer surface of the press plate 13 close to the core 11. The limiting metal block 5 is added to the middle protrusion 132 to adjust the change of the lateral stiffness; thus, the lateral stiffness can be designed in a targeted manner to adapt to different stiffness matching requirements.

[0049] 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 heavy truck power suspension cushion for improving the lateral stiffness of the product, comprising a core (11) and a shell (2) arranged outside the core (11), a rubber vulcanized body (1) vulcanized between the core (11) and the shell (2), characterized in that: The rubber vulcanized body (1) comprises a rubber body (12) and a pressing plate (13) which are vulcanized into one body. The rubber body (12) is wrapped around the side surface of the core body (11). The outer wall surface where the core body (11) and the rubber body (12) are combined is a concave structure (4). The concave structures (4) are arranged opposite to each other and enclose an X-shaped rubber accommodating cavity structure at the bottom of the core body (11). The combined side of the shell (2) and the rubber body (12) and the concave structure (4) together provide a accommodating space for the rubber body (12). The pressing plate (13) is embedded in the rubber body (12) to inhibit the rubber body (12) from moving in the lateral direction.

2. The heavy truck power suspension cushion for improving the lateral rigidity of the product according to claim 1 is characterized in that: The housing (2) comprises an open end and a mounting end, and the rubber vulcanized body (1) enters through a mounting groove (21) at the open end of the housing (2) and is mounted inside the housing (2).

3. The heavy truck power suspension cushion for improving the lateral rigidity of the product according to claim 1, characterized in that: The press-fit plate (13) comprises a connecting plate (131) and a protruding portion (132) extending from the shell (2) to the core (11); the joint side of the shell (2) and the rubber body (12) is an arched structure (3) protruding toward the core (11), which together with the concave structure (4) provides a receiving space for the rubber body (12).

4. The heavy truck power suspension cushion for improving the lateral rigidity of the product according to claim 1, characterized in that: The press-fit plate (13) is detachably connected to the mounting groove (21) of the shell (2); the press-fit plate (13) is a protruding plate extending from the shell (2) toward the core (11).

5. The heavy truck power suspension cushion for improving the lateral rigidity of the product according to claim 4 is characterized in that: The press-fit plate (13) comprises a connecting plate (131) and a protruding portion (132) fixedly arranged on the connecting plate (131); the connecting plate (131) and the housing (2) are press-fitted and buckled into one body; the bending direction of the protruding portion (132) is consistent with the bending direction of the concave structure (4).

6. The heavy truck power suspension cushion for improving the lateral rigidity of the product according to claim 5, characterized in that: A perpendicular line from the highest point of the protrusion of the protrusion (132) to the connecting plate (131) can divide the protrusion (132) and the connecting plate (131) into equal parts.

7. The heavy truck power suspension cushion for improving the lateral rigidity of the product according to claim 6, characterized in that: A limiting metal block (5) is arranged at the highest point of the protrusion of the protrusion (132) to adjust the change of the lateral rigidity; the limiting metal block (5) is arranged on the outer surface of the pressing plate (13) on a side close to the core body (11).

8. The heavy truck power suspension cushion for improving the lateral rigidity of the product according to claim 7, characterized in that: The inner concave structure (4) is a folded surface segment, and the press-fit plate (13) is a segmented special-shaped structure, comprising a connecting plate (131) and a frame body (134) parallel to the connecting plate (131), wherein the connecting plate (131) and the frame body (134) are connected via a bevel body (133).

9. A heavy truck power suspension cushion for improving the lateral rigidity of a product according to any one of claims 1 to 8, characterized in that: The edge of the shell (2) is provided with hollow weight-reducing holes.

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