Truck motor suspension assembly

Abstract

The utility model relates to the field of truck motor system vibration reduction, in particular to a truck motor suspension assembly which comprises an installation seat, a vulcanization body located in the installation seat and a limiting plate connected to the installation seat and the vulcanization body. Accommodating grooves are formed in the mounting seat, the outer side ends of the rubber bodies are accommodated in the accommodating grooves, limiting tables are arranged between the adjacent accommodating grooves in the mounting seat, deformation gaps exist between the limiting tables and the rubber bodies in a normal state, press-fitting plates located in the accommodating grooves are arranged in the rubber bodies, and inner convex parts and inner concave parts are arranged on the press-fitting plates and the mandrel in the Y direction correspondingly; the inner convex part and the inner concave part are matched to bear force, a fastener is arranged at the corner of the limiting plate, the limiting plate is connected with the mounting seat and the frame through the fastener, and the limiting plate is tightly pressed at the outer end of the press-fitting plate. According to the scheme, the motor suspension assembly is large in rigidity in the Y direction, large in rigidity in other directions and good in limiting capacity, the vibration isolation and reduction performance can be improved, the manufacturing cost is reduced, and the fatigue life is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of vibration reduction of a truck motor system, and specifically provides a truck motor suspension assembly. Background Art

[0002] Most trucks are now engine-driven. With the rapid development of electric vehicle technology and the gradual advancement of the dual-carbon strategy, some special-purpose trucks have begun to transform into electric vehicles, such as logistics trucks, dump trucks, mining trucks, etc. At the same time, with the rapid development of battery technology and the steady improvement of infrastructure, more and more conventional trucks have also joined the ranks of electrification.

[0003] At present, the main design idea of ​​electric trucks is to replace the engine with a high-torque motor, but the motor mount used for connecting vibration reduction is mostly replaced by the traditional engine mount, which has the following problems:

[0004] 1. The original engine mount did not take into account the characteristics of the motor itself, such as large instantaneous torque, light weight, and high speed. As a result, when the motor was started and stopped, the vulcanized body of the product on one side was in a stretched state, causing the rubber body in the motor mount to crack at an early stage, or causing the rubber body to fail prematurely.

[0005] 2. In the original engine suspension, the rubber body has a small Y-axis stiffness and a simple structure. The limited limiting capacity can easily lead to insufficient limiting, resulting in severe vibration when the motor starts and stops, affecting the fatigue performance of the vehicle, and having a poor effect on isolating the high-frequency vibration and howling of the motor.

[0006] Therefore, how to design a truck motor suspension system that can improve Y-axis stiffness, have strong limiting ability and excellent fatigue performance is a problem that needs to be solved urgently. Utility Model Content

[0007] In order to solve the above problems, the utility model provides a truck motor suspension assembly, which has greater rigidity and stronger limiting ability, can cope with the impact of force when the motor is started and stopped, and improves service life and fatigue performance.

[0008] The utility model provides a truck motor suspension assembly, comprising a mounting seat, a vulcanized body located in the mounting seat, and a limit plate connected to the mounting seat and the vulcanized body; the vulcanized body comprises a core shaft and a rubber body which are sequentially arranged from the inside to the outside, a receiving groove is provided on the mounting seat, and the outer end of the rubber body is accommodated in the receiving groove, a limit platform is provided between adjacent receiving grooves in the mounting seat, and a deformation gap exists between the limit platform and the rubber body under normal conditions; a press plate located in the receiving groove is provided in the rubber body, and an inner convex part and an inner concave part are respectively provided on the press plate and the core shaft along the Y direction, and the inner convex part and the inner concave part cooperate to bear force.

[0009] Furthermore, the corners of the limiting plate are provided with fasteners and are connected to the mounting seat and the frame through the fasteners, and the limiting plate is pressed tightly against the outer end of the press-fit plate.

[0010] Furthermore, a limiting ridge covering the outer side of the core shaft is provided at one end portion of the rubber body in the axial direction, and the limiting ridge is located at one side of the frame.

[0011] Furthermore, a vibration isolation ridge is provided on one end of the rubber body away from the limiting ridge.

[0012] Furthermore, a limiting plate is arranged on one side of the vibration isolation ridge, and a middle through hole is opened on the limiting plate; the flat side of the core shaft extends to the outside of the middle through hole.

[0013] Furthermore, the mounting seat and the limiting plate are in a prism-shaped structure as a whole, and the fasteners are arranged at the four corners of the prism.

[0014] Furthermore, the middle through hole is in an overall rectangular structure, and adjacent hole walls of the middle through hole are connected by a connecting wall, and the connecting wall is arranged parallel to the edge of the limiting plate.

[0015] Furthermore, the limiting platform is located at the connecting wall and extends to the inner side of the connecting wall.

[0016] Furthermore, the fastener is a long bolt, and the long bolt is located outside the hole wall of the middle through hole and outside the press-fit plate.

[0017] Furthermore, a plurality of weight-reducing through holes are evenly distributed on the press-fit plate.

[0018] Compared with the prior art, the utility model can achieve the following beneficial effects:

[0019] 1. The motor suspension assembly in the utility model can realize the connection between the motor and the frame, which is easy to install. The vulcanized body is pressed by interference fit, and the vulcanized body is in a compressed state under various working conditions, which can effectively improve the service life of the vulcanized body.

[0020] 2. The motor suspension assembly in the utility model can adjust the Y-direction stiffness over a wide range, and can provide large stiffness in all directions in the X and Z planes, so as to effectively suppress the motor startup jitter, improve the vibration reduction and isolation performance and fatigue life.

[0021] 3. The motor suspension assembly in the utility model can prevent the vulcanized body from falling out by adding a limit plate during installation. At the same time, the mounting seat and the rubber body can provide limits in all directions to suppress large displacement of the motor. The structure is simple and effective, which reduces manufacturing costs, improves the vibration isolation performance of the product, and increases the life of the vulcanized body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 The overall structure of the motor suspension assembly provided according to the embodiment of the utility model is schematically shown in FIG. Figure 1;

[0023] Figure 2 The overall structure of the motor suspension assembly provided according to the embodiment of the utility model is schematically shown in FIG. Figure 2 ;

[0024] Figure 3 It is a schematic diagram of the exploded structure of the motor suspension assembly provided according to an embodiment of the utility model;

[0025] Figure 4 The overall structure of the motor suspension assembly provided according to the embodiment of the utility model is schematically shown in FIG. Figure 3 .

[0026] The reference numerals therein include: mounting seat 1, limiting plate 2, core shaft 3, rubber body 4, accommodating groove 5, limiting platform 6, deformation gap 7, pressing plate 8, inner convex portion 9, inner concave portion 10, fastener 11, limiting ridge 12, vibration isolation ridge 13, middle through hole 14, flat square 15, hole wall 16, connecting wall 17, edge 18, weight-reducing through hole 19. DETAILED DESCRIPTION

[0027] In the following, reference will be made to the Figure 1-4 Describe the embodiment of the utility model. In the following description, the same modules are represented by the same reference numerals. In the case of the same reference numerals, their names and functions are also the same. Therefore, the detailed description thereof will not be repeated.

[0028] In order to make the purpose, technical solutions and advantages of the present invention more clear, the following Figure 1-4 It should be understood that the specific embodiments described herein are only used to explain the present invention and do not constitute a limitation on the present invention.

[0029] A truck motor suspension assembly, such as Figure 1-Figure 4 As shown, it includes a mounting seat 1, a vulcanized body located in the mounting seat 1, and a limit plate 2 connected to the mounting seat 1 and the vulcanized body. The vulcanized body includes a core shaft 3 and a rubber body 4 arranged in sequence from the inside to the outside. A press plate 8 is provided in the rubber body 4. The core shaft 3, the rubber body 4 and the press plate 8 are vulcanized into a whole and are interference fit in the mounting seat 1, so that the four suspension legs of the product are in a compressed state under the action of the gravity of the motor. At the same time, when the whole vehicle is running, the suspension is always in a compressed state, which can improve the fatigue performance of the product.

[0030] The mounting seat 1 is provided with a receiving groove 5, the outer end of the rubber body 4 is accommodated in the receiving groove 5, the pressing plate 8 is arranged in the rubber body 4 and located in the receiving groove 5, and a limiting platform 6 is arranged between adjacent receiving grooves 5 in the mounting seat 1. The limiting platform 6 can adjust the free travel of the vulcanized body in all directions, and at the same time protect the vulcanized body from being deformed too much, thereby improving fatigue performance. Under normal conditions, there is a deformation gap 7 between the limiting platform 6 and the rubber body 4. The rubber body 4 is provided with a limiting rib 12 wrapped around the outer side of the core shaft 3 at one end in the axial direction, and the axial direction is the axial direction of the core shaft 3. The limiting rib 12 is located on one side of the frame. When the motor suspension assembly is subjected to Y-direction movement, the limiting rib 12 contacts the frame, which can provide a limit for the product in the Y direction. The rubber body 4 is provided with a vibration isolation rib 13 at one end away from the limiting rib 12. The vibration isolation rib 13 can achieve the effect of reducing high-frequency dynamic stiffness, which is conducive to isolating high-frequency vibration and howling of the motor.

[0031] An inner convex portion 9 and an inner concave portion 10 are respectively provided on the press plate 8 and the core shaft 3 along the Y direction. The inner convex portion 9 and the inner concave portion 10 cooperate with each other to bear force, and the Y-direction stiffness can be increased by using them together. At the same time, the Y-direction stiffness can be adjusted by adjusting the degree of concavity of the inner concave portion 10 and the degree of protrusion of the inner convex portion 9 according to actual working conditions, thereby realizing variable stiffness and improving vibration reduction and isolation performance.

[0032] The limiting plate 2 is provided with fasteners 11 at the corners and is connected to the mounting seat 1 and the frame through the fasteners 11. The limiting plate 2 is fixed to the motor suspension mounting seat 1 through the fasteners 11 connected to the frame, which can prevent the vulcanized body from escaping from the motor suspension mounting seat 1. The limiting plate 2 is pressed against the outer end of the pressing plate 8. The limiting plate 2 is arranged on one side of the vibration isolation ridge 13. A middle through hole 14 is opened on the limiting plate 2, and the flat square 15 of the core shaft 3 extends to the outside of the middle through hole 14. The mounting seat 1 and the limiting plate 2 are prismatic in structure as a whole, and the rubber body 4 is rhombus-shaped in structure as a whole. The rhombus-symmetrical rubber structure can provide high rigidity in all directions in the X and Z planes, and can effectively suppress motor startup jitter. The directions of the X, Y, and Z planes are as follows: Figure 4 as shown in .

[0033] The fasteners 11 are arranged at the four corners of the prism, and the central through hole 14 is a rectangular structure as a whole. The adjacent hole walls 16 of the central through hole 14 are connected by a connecting wall 17. The connecting wall 17 is arranged parallel to the edge 18 of the limit plate 2. The limit platform 6 is located at the connecting wall 17 and extends to the inner side of the connecting wall 17.

[0034] The fastener 11 is a long bolt, which is located outside the hole wall 16 of the middle through hole 14 and outside the press plate 8. The mounting hole of the long bolt is located in the force direction of the vulcanized body, which can reduce the force on the motor suspension mounting seat 1. The long bolt can increase the product modal frequency and improve the vibration isolation performance of the product. At the same time, there are multiple weight-reducing through holes 19 evenly distributed on the press plate 8. The mounting seat 1 can be made of lightweight materials such as extruded aluminum. The weight-reducing through holes 19 and lightweight materials can achieve low weight and low cost. The mandrel 3 can be made of forged aluminum, cast steel and other materials.

[0035] Although the embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

[0036] The above specific implementation methods of the utility model do not constitute a limitation on the protection scope of the utility model. Any other corresponding changes and modifications made according to the technical concept of the utility model should be included in the protection scope of the claims of the utility model.

Claims

1. A truck motor suspension assembly, characterized in that: The invention comprises a mounting seat (1), a vulcanized body located in the mounting seat (1), and a limit plate (2) connected to the mounting seat (1) and the vulcanized body; the vulcanized body comprises a core shaft (3) and a rubber body (4) arranged in sequence from the inside to the outside; a receiving groove (5) is provided on the mounting seat (1) and the outer end of the rubber body (4) is received in the receiving groove (5); a limit platform (6) is provided between adjacent receiving grooves (5) in the mounting seat (1); a deformation gap (7) exists between the limit platform (6) and the rubber body (4) under normal conditions; a pressing plate (8) is provided in the rubber body (4) and is located in the receiving groove (5); an inner convex portion (9) and an inner concave portion (10) are respectively provided on the pressing plate (8) and the core shaft (3) along the Y direction, and the inner convex portion (9) and the inner concave portion (10) cooperate to bear force.

2. The truck motor suspension assembly according to claim 1, characterized in that: The limiting plate (2) is provided with a fastener (11) at a corner thereof and is connected to the mounting seat (1) and the vehicle frame via the fastener (11); the limiting plate (2) is pressed against the outer end of the pressing plate (8).

3. The truck motor suspension assembly according to claim 2, characterized in that: The rubber body (4) is provided with a limiting ridge (12) at one end portion located in the axial direction and covering the outside of the core shaft (3), and the limiting ridge (12) is located at one side of the frame.

4. The truck motor suspension assembly according to claim 3, characterized in that: A vibration isolation ridge (13) is provided on the rubber body (4) at one end away from the limiting ridge (12).

5. The truck motor suspension assembly according to claim 4, characterized in that: The limit plate (2) is arranged on one side of the vibration isolation ridge (13), and a middle through hole (14) is opened on the limit plate (2); the flat square (15) of the core shaft (3) extends to the outside of the middle through hole (14).

6. The truck motor suspension assembly according to claim 5, characterized in that: The mounting seat (1) and the limiting plate (2) are in an overall prism-shaped structure, and the fasteners (11) are arranged at the four corners of the prism.

7. The truck motor suspension assembly according to claim 6, characterized in that: The central through hole (14) is in an overall rectangular structure, and adjacent hole walls (16) of the central through hole (14) are connected by a connecting wall (17), and the connecting wall (17) is arranged parallel to an edge (18) of the limiting plate (2).

8. The truck motor suspension assembly according to claim 7, characterized in that: The limiting platform (6) is located at the connecting wall (17) and extends to the inner side of the connecting wall (17).

9. The truck motor suspension assembly according to claim 8, characterized in that: The fastener (11) is a long bolt, which is located outside the hole wall (16) of the middle through hole (14) and outside the press-fit plate (8).

10. The truck motor suspension assembly according to claim 9, characterized in that: The press plate (8) is evenly distributed with a plurality of weight-reducing through holes (19).

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