CN116985615A - Method for prolonging service life of heavy truck motor suspension cushion and motor suspension cushion thereof - Google Patents

Abstract

The application relates to a method for prolonging the service life of a heavy truck motor suspension cushion, which comprises the steps of arranging a vibration reduction block into a split structure which is overlapped up and down and is assembled in pairs, and pressing the center of the vibration reduction block into an integrated vibration reduction unit through core interference; the edges of the vibration reduction block are mutually perpendicular and are respectively in an X direction and a Y direction, and the insertion direction of the core body is in a Z direction; the main springs are inserted into the vibration reduction blocks, and the insertion directions of the main springs are not perpendicular to or parallel to the X, Y, Z directions; the main springs of the vibration reduction blocks which are oppositely arranged in an up-down overlapped manner can provide effective elastic support in all directions; to generate a large load against the torque force of the motor. During assembly, the first main spring and the second main spring are symmetrically arranged along the joint surfaces of the first vibration reduction block and the second vibration reduction block. When being stressed, one vibration reduction block is compressed when being stretched, and the compressed surface provides larger reaction force, so that the service life of the product in all directions is ensured.

Description

Method for prolonging service life of heavy truck motor suspension cushion and motor suspension cushion thereof

Technical Field

The application relates to a heavy truck motor suspension system, in particular to a method for prolonging the service life of a heavy truck motor suspension cushion and the motor suspension cushion thereof.

Background

The existing heavy truck adopts a fuel engine system, an engine is used as a power source for output, and the rubber vibration reduction elements are matched according to the vibration characteristics of the engine system.

With the development of new energy power, a part of heavy truck models at present already adopt a motor system as a power source; the motor outputs torsion to drive the whole vehicle to move, and the running characteristics of the motor are greatly different from those of an engine/gearbox system; the acting torque of the motor is larger, the torque lifting speed of the motor is very high in the running process, and the motor can be lifted to larger torque by starting, so that the instantaneous impact in the running process is large; the output torque of the engine is gentle, and gradually increases with the increase of the rotation speed of the engine; the vibration of the engine is larger when the engine runs at idle speed, and the suspension rigidity of the engine is generally required to be lower, so that the vibration of the engine is isolated; the motor is completely different from the engine, no idle working condition exists, and whistle noise is obvious in operation; if the transmission engine suspension is used in the motor system, a certain supporting and buffering function can be started; but the lower rigidity of the engine suspension can lead to frequent contact limit in the running process of the suspension, cause abnormal sound and cause premature failure of the suspension. In addition, the number of the engine suspension rubber main springs is generally two, and the engine suspension rubber main springs are positioned below the bearing, so that on one hand, the rigidity is limited to be improved, and on the other hand, the engine suspension rubber main springs are difficult to bear repeated torsion (mainly bear the pressing load).

The existing motor system of the heavy truck is not designed with a special suspension support system, and is replaced by a transmission engine suspension; the engine suspension can not effectively resist the frequent action of large torque of the motor, rubber deformation is large and frequent limiting is performed in the running process, abnormal sound is generated, and suspension cracking is caused.

Through searching, application number: cn202122051341.X provides a motor suspension comprising an inner core, a main spring rubber and an outer tube, wherein the main spring rubber has a plurality of main ribs for connecting the inner core and the outer tube; the main ribs are distributed at intervals along the circumferential direction of the inner core, and cavities are formed between the adjacent main ribs; the two ends of each main rib are respectively provided with a convex block, the convex blocks at the ends are positioned in the middle of the main rib along the radial direction of the inner core, and grooves are respectively formed in the inner side and the outer side of the convex blocks. According to the motor suspension disclosed by the application, the protruding blocks are respectively arranged at the two ends of the main rib, the grooves are formed at the inner side and the outer side of the protruding blocks, and the design similar to a Chinese character 'shan' shape at the end part of the main rib can be utilized, so that the protruding blocks in the middle can adjust the mode of main spring rubber, the dynamic stiffness of the suspension at high frequency can be reduced, and the vibration isolation effect of the suspension is ensured. The motor suspension solves the problems that rubber deformation is large and frequent limiting and abnormal sound is generated in the operation process of the motor suspension under the frequent action of effectively resisting the large torque of the motor.

Therefore, a method for improving the service life of a suspension system special for a motor is urgently needed to realize the torsion resistance effect in the motor movement process, protect the motor to stably run and work and attenuate vibration.

Disclosure of Invention

Aiming at the defects of the prior art, the application mainly aims at a method for prolonging the service life of a heavy truck motor suspension cushion, and combines the arrangement of a motor in a frame system according to the characteristic of large torque of the system. The vibration reduction block is creatively designed into a split structure, and then is assembled into a whole through the core body; the inside of the vibration reduction block is provided with an obliquely inserted main spring, and the main springs of the two vibration reduction blocks are oppositely arranged; when being stressed, one vibration reduction block is compressed when being stretched, and the compressed surface provides larger reaction force, so that the service life of the product in all directions is ensured.

The motor suspension cushion produced by the method for prolonging the service life of the heavy truck motor suspension cushion is connected with the motor and the frame girder on one hand; on the other hand, the suspended rubber main body structure is designed into a main spring structure, and the system can effectively attenuate vibration and impact transmitted by a road surface; the motor system is protected to run well under various road conditions.

The application adopts the technical means for solving the problems that:

the method comprises the steps of setting a vibration reduction block to be of a split structure which is overlapped up and down and assembled in pairs, and pressing the center of the vibration reduction block into an integrated vibration reduction unit through interference of a core body; the edges of the vibration reduction block are mutually perpendicular and are respectively in an X direction and a Y direction, and the insertion direction of the core body is in a Z direction; the main springs are inserted into the vibration reduction blocks, and the insertion direction of the main springs is not perpendicular to or parallel to the X, Y, Z surfaces; the main springs of the vibration reduction blocks which are oppositely arranged in an up-down overlapped manner can provide effective elastic support in all directions; to generate a large load against the torque force of the motor.

The motor suspension cushion for the heavy truck is provided with two identical vibration reduction blocks, so that the two vibration reduction blocks are convenient to oppositely assemble, and the upper vibration reduction block and the lower vibration reduction block are locked together by an elastic cylindrical pin; the core body is pressed into hollow areas of the lower vibration reduction block and the upper vibration reduction block through interference, and interference assembly is achieved through extrusion of internal rubber.

The lower vibration damping block and the upper vibration damping block are combined together to form a main vibration damping element for motor suspension. The vibration damping element can provide effective elastic support in all directions; can resist the torsion of the motor to generate large load and simultaneously can prevent the motor from transversely moving.

Further, the vibration reduction blocks are respectively arranged to be a first vibration reduction block and a second vibration reduction block, the hollow design is carried out at the center of the vibration reduction blocks, a hollow area is formed, and the hollow area is of a non-circular design so as to be matched with the core body, so that the installation reliability of the whole product is improved.

Further, the hollow area is of a diamond structure, diamond through holes are formed in the diamond structure, and the inner walls of the diamond through holes are arranged to be irregularly curved surfaces.

Further, the first inner core and the second inner core with the hollow areas of the vibration reduction block being diamond-shaped are inserted and installed on the outer wall of the inner core, and the main springs are arranged at an angle in the X, Y, Z directions, so that the elastic supporting performance of the product is improved.

The core body and the hollow area of the vibration reduction block form interference fit, and the movement of the core body is resisted by the interference force generated by the compressed rubber; the interface size of the core body can be designed in a matching way according to the interface size, the assembly height and other factors of different motors, and the vibration reduction main body is not required to be manufactured additionally due to the adoption of a combined type.

Further, the four main springs are arranged, and correspond to four sides of the diamond-shaped inner core, so that a first main spring and a second main spring which are arranged in the first vibration reduction block and the second vibration reduction block in a head-tail opposite mode are formed; during assembly, the first main spring and the second main spring are symmetrically arranged along the joint surfaces of the first vibration reduction block and the second vibration reduction block.

Further, the first main spring and the second main spring comprise partition plates and rubber parts, and the head-tail opposite positions of the adjacent partition plates are separated by an empty structure. The hollow design can provide a containing space for rubber deformation in the main spring.

Further, the air-oriented structure comprises an air-oriented structure I and an air-oriented structure II, wherein the air-oriented structures which are arranged oppositely have the same shape, and the shapes of the air-oriented structures which are not arranged oppositely are different. According to different stress, the air-direction structure is set to be different so as to adapt to the load bearing of the motor during use.

Further, the first hollow structure is arranged in the width direction of the first vibration reduction block and the second vibration reduction block, is close to one corner of the inner core diamond structure, extends inwards, is arranged along with the inner core in a shape, and wraps the inner core.

Further, the first and second main springs of the first and second damper blocks are disposed along the mating face at an angle of greater than 90 °. The design ensures that the first main spring and the second main spring are assembled in an angle manner to form a butt-up state; the insertion direction of the matched main spring is not vertical or parallel to the X, Y, Z surfaces; the whole motor is suspended to form a soft cushion in all directions of X, Y, Z, when one side is pulled, the other side is simultaneously pressed, so that the opposite side is protected.

Further, the second air-direction structure is arranged in the length direction of the first vibration reduction block and the second vibration reduction block, and comprises a middle straight surface section connected with the side end surface opposite to the main spring, and an outer straight surface section and an inner straight surface section connected with two sides of the middle straight surface section, wherein the outer straight surface section and the inner straight surface section are parallel or approximately parallel to the outer edges of the vibration reduction blocks.

Further, the first vibration reduction block and the second vibration reduction block are of cuboid structures, and mounting holes are formed in four corners of each cuboid structure.

Further, an elastic cylindrical pin is arranged between the mounting holes and close to the space structure. After the lower vibration reduction block and the upper vibration reduction block are locked through the elastic cylindrical pins, four mounting holes of the base can penetrate through bolts in the assembly process to be connected with the frame end; and the bolt is locked to provide support to prevent the two vibration reduction blocks from separating.

Further, the core body comprises a connecting end, a transition end face and a fixing part; the connecting end is a connecting block protruding outwards from the hollow area, and the connecting block is provided with a mounting hole for mounting the frame; the shape of the fixed end part is matched with the structure of the inner wall of the hollow area, and the outer wall of the fixed part is wavy and is matched with the inner wall of the hollow area in a concave-convex mode. The hollow area is of a non-circular structure, the core body and the hollow area of the vibration reduction block form interference fit, and the movement of the core body is resisted by the interference force generated by the compressed rubber.

Further, the plane of the transition end surface extends outwards from the center of the core body; the connecting end and the transition end face are arranged in a non-perpendicular mode.

Compared with the prior art, the application has the beneficial effects that:

1. the method for prolonging the service life of the suspension cushion of the heavy truck motor can realize the connection between the motor and the frame, is convenient to install, adopts the vibration reduction blocks with the same structure, and has strong universality.

2. The rubber main spring of the method for prolonging the service life of the heavy truck motor suspension cushion is of a 4-main-spring-structure integrated vulcanization structure, so that the rigidity of the cushion can be greatly improved, and the repeated torsion impact of a motor can be effectively resisted.

3. The heavy truck motor suspension cushion produced by the method for prolonging the service life of the heavy truck motor suspension cushion is assembled by two integrally vulcanized vibration reduction blocks in pairs and is locked by elastic pins to form a vibration reduction main body unit, and the rigidity of X, Y, Z in three directions is obviously improved; vibration and impact transmitted to the motor by the road surface can be effectively attenuated; and improves the rubber life of the suspension itself.

4. The mounting mode of the suspension cushion is simple and convenient, the press-fitting locking process of the traditional engine suspension is not needed, the pin locking mode is adopted after the integral vulcanization, and the production efficiency is greatly improved.

5. The core body and the vibration reduction block are assembled in an interference mode through the middle hole structure, and different motors can be designed to be matched with different cores.

In summary, the method for prolonging the service life of the heavy truck motor suspension cushion can be specially used for the motor to realize the torsion resistance effect in the motor movement process, protect the motor to stably run and work and attenuate vibration, and provides a new thought for motor suspension.

Drawings

Fig. 1 is a schematic diagram of the overall structure of a soft cushion suspended by a heavy truck motor according to the application.

Fig. 2 is a schematic bottom view of the soft cushion of the heavy truck motor suspension illustrated in fig. 1.

Fig. 3 is a schematic front view of the soft cushion of the heavy truck motor in fig. 1.

Fig. 4 is a schematic top view of the lightweight heavy truck power suspension cushion of fig. 1.

Fig. 5 is a schematic view of the internal structure of the light weight heavy truck power suspension cushion of fig. 1.

The novel vibration damper comprises a first vibration damper, a second vibration damper, a 3-core body, a 31-connecting end, a 32-transitional end face, a 33-fixing part, a 4A-first inner core, a 4B-second inner core, a 5-partition plate, a 6-base, a 7-elastic cylindrical pin, an 8A-first main spring, an 8B-second main spring, a 9-hollow structure, a 91-hollow structure I, a 92-hollow structure II and a 10-mounting hole.

Detailed Description

The application is further described below with reference to the accompanying drawings. Wherein the drawings are for illustrative purposes only and are shown in schematic, non-physical, and not intended to be limiting of the present patent; for the purpose of better illustrating embodiments of the application, certain elements of the drawings may be omitted, enlarged or reduced and do not represent the size of the actual product; it will be appreciated by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.

Example 1

As shown in fig. 1 to 5, in the method for prolonging the service life of the suspension cushion of the heavy truck motor, the vibration reduction blocks are arranged into split structures which are overlapped up and down and are oppositely arranged, and the centers of the vibration reduction blocks are pressed into an integrated vibration reduction unit through interference of the core body 3; the edges of the vibration reduction block are mutually perpendicular and respectively in an X direction and a Y direction, and the insertion direction of the core body 3 is in a Z direction; the main springs are inserted into the vibration reduction blocks, and the insertion directions of the main springs are not perpendicular to or parallel to the X, Y, Z directions; the main springs of the vibration reduction blocks which are oppositely arranged in an up-down overlapped manner can provide effective elastic support in all directions; to generate a large load against the torque force of the motor. According to the characteristic of large torque of the system, and the arrangement of the motor in the frame system. The vibration reduction block is creatively designed into a split structure, and then is assembled into a whole through the core body; the inside of the vibration reduction block is provided with an obliquely inserted main spring, and the main springs of the two vibration reduction blocks are oppositely arranged; when being stressed, one vibration reduction block is compressed when being stretched, and the compressed surface provides larger reaction force, so that the service life of the product in all directions is ensured.

Specifically, the vibration damping blocks are respectively set as a first vibration damping block 1 and a second vibration damping block 2, the hollow design is carried out at the central position of the vibration damping blocks, a hollow area is formed, and the hollow area is in a non-circular design so as to be matched with the core body 3, so that the installation reliability of the whole product is improved.

The motor suspension comprises a first vibration reduction block 1, a second vibration reduction block 2, a core body 3, an elastic cylindrical pin 7 and the like. The first vibration reduction block 1 and the second vibration reduction block 2 have the same structure and are respectively composed of an inner core 4, a partition plate 5 and a rubber part; the first vibration reduction block 1 and the second vibration reduction block 2 are locked together by an elastic cylindrical pin 7; the core body 3 is pressed into the hollow areas of the first vibration reduction block 1 and the second vibration reduction block 2 through interference, and interference assembly is realized through extruding internal rubber.

In the heavy truck motor suspension cushion in the embodiment, the first vibration reduction block 1 and the second vibration reduction block 2 are overlapped up and down, the base 6 is surrounded by the first vibration reduction block 1 at the bottom, and hollow areas of the first vibration reduction block 1 and the second vibration reduction block 2 are pressed in an interference manner through the core body 3 so as to fix the first vibration reduction block 1 and the second vibration reduction block 2 into a whole in a butt-assembling manner; the hollow areas are a first inner core 4A and a second inner core 4B respectively; the outer edges of the first inner core 4A and the second inner core 4B are respectively provided with a first main spring 8A and a second main spring 8B which are obliquely inserted from the inner core surface to the inside, and the first main spring 8A and the second main spring 8B are oppositely arranged; when assembled, the first main spring 8A and the second main spring 8B are symmetrically arranged along the joint surfaces of the first vibration damping block 1 and the second vibration damping block 2.

The first vibration reduction block 1 and the second vibration reduction block 2 in the embodiment are rectangular blocks, wherein the first inner core 4A and the second inner core 4B are of diamond structures, and four corners of the diamond structures are arranged near four sides of the rectangular blocks; the diamond structure is internally provided with diamond through holes, and the inner walls of the diamond through holes are arranged to be irregular curved surfaces, in the embodiment, wavy curved surfaces; the correspondingly arranged core body 2 comprises a connecting end 31, a transitional end face 32 and a fixing part 33; the connecting end 31 is a connecting block protruding outwards from the hollow area, and a mounting hole is formed in the connecting block and used for mounting the frame; the shape of the fixed end part 33 is matched with the structure of the inner wall of the hollow area, and the outer wall of the fixed part 33 is wavy and is matched with the concave-convex shape of the inner wall of the hollow area. A plane of transition end face 32 extending outwardly from the center of core 3; the connecting end 31 is arranged non-perpendicularly to the transition surface 32. The transition end face 32 is of a T-shaped structure as a whole, and the transition end face 32 can collide with rubber when moving along with the frame, so that the limit protection effect is achieved, and excessive movement is prevented. And the mounting holes 10 arranged at four corners of the first vibration reduction block 1 and the second vibration reduction block 2 are effectively avoided.

The first main spring 8A and the second main spring 8B are respectively four, and the opposite parts of the head and the tail are separated by the hollow structure 9 to form a diamond-like structure which surrounds the outside of the inner core. The air-oriented structures 9 comprise an air-oriented structure one 91 and an air-oriented structure two 92, wherein the air-oriented structures 9 which are oppositely arranged have the same shape, and the shapes of the air-oriented structures 9 which are not oppositely arranged are different. In the embodiment, the air-oriented structures in different directions are set to be different structures according to different stress, so that the air-oriented structure is more suitable for use under actual working conditions.

The second hollow structure 92 arranged in the length direction of the first vibration reduction block 1 and the second vibration reduction block 2 comprises a middle straight surface section 92A connected with the opposite side end surfaces of the main spring, and two sides of the middle straight surface section 92A are connected with an outer straight surface section 92B and an inner straight surface section 92C, the outer straight surface section 92B and the inner straight surface section 92C are parallel or approximately parallel to the outer edge of the first vibration reduction block 1, and the inner straight surface section 92C is close to one corner of the inner core diamond structure. The whole hollow structure II 92 is of a V-shaped structure, and the elastic cylindrical pin 7 is arranged in the V-shaped structure.

The first air-direction structure 91 is disposed in the width direction of the first vibration-damping block 1 and the second vibration-damping block 2, and has a similar structure to the second air-direction structure 92, except that the inner straight-face section 92C of the second air-direction structure 92 is close to one corner of the diamond-shaped structure of the inner core, but does not include the inner core. The first hollow structure 91 is close to one corner of the diamond-shaped structure of the inner core, extends inwards, is arranged along with the inner core in a shape, and wraps the inner core.

In the present embodiment, the insertion direction of the first main spring 8A and the second main spring 8B is neither perpendicular nor parallel to the three surfaces X, Y, Z. The first main spring 8A and the second main spring 8B of the first damper block 1 and the second damper block 2 are disposed along the abutting face, which is referred to as being greater than 90 °. The first vibration reduction block 1 and the second vibration reduction block 2 are combined together to form a main body vibration reduction element of the motor suspension. The vibration damping element can provide effective elastic support in all directions; can resist the torsion of the motor to generate large load and simultaneously can prevent the motor from transversely moving.

The core body 3 and the hollow area of the vibration reduction block form interference fit, and the movement of the core body is resisted by the interference force generated by the compressed rubber; the interface size of the core body can be designed in a matching way according to the interface size, the assembly height and other factors of different motors, and the vibration reduction main body is not required to be manufactured additionally due to the adoption of a combined type.

The supporting base, the connecting bracket and the connecting lining are made of cast steel, spheroidal graphite cast iron or cast aluminum and other materials; is integrally formed by casting and plays a main role in connection and support.

The core body, the inner core and the lower base can be made of aluminum or steel; the separator is designed to be in a stamping forming mode, and the material can be selected from common stamping steel materials or aluminum materials.

The application mainly aims at a motor system of a heavy truck, and combines the arrangement of a motor in a frame system according to the characteristic of large torque of the system. Designing a heavy truck motor suspension cushion; two vibration reduction blocks are designed, main springs which are obliquely inserted are arranged in the vibration reduction blocks, and the main springs of the two vibration reduction blocks are oppositely arranged; when being stressed, one vibration reduction block is compressed when being stretched, and the compressed surface provides larger reaction force, so that the service life of the product in all directions is ensured.

The heavy truck motor suspension cushion is connected with a motor and a frame girder on one hand; on the other hand, the suspended rubber main body structure is designed into a main spring structure, and the system can effectively attenuate vibration and impact transmitted by a road surface; the motor system is protected to run well under various road conditions.

The above is merely an embodiment of the present application, and the present application is not limited to the field of the present embodiment, but the specific structure and characteristics of the present application are not described in detail. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the present application, which should also be considered as the scope of the present application, and which does not affect the effect of the present application and the utility of the patent. The protection scope of the present application is subject to the content of the claims, and the description of the specific embodiments and the like in the specification can be used for explaining the content of the claims.

Claims (10)

1. A method for prolonging the service life of a heavy truck motor suspension cushion is characterized in that a vibration reduction block is arranged into a split structure which is overlapped up and down and assembled in pairs, and the center of the vibration reduction block is pressed into an integrated vibration reduction unit through interference of a core body (3); the edges of the vibration reduction block are mutually perpendicular and are respectively in an X direction and a Y direction, and the insertion direction of the core body (3) is in a Z direction; the main springs are inserted into the vibration reduction blocks, and the insertion directions of the main springs are not perpendicular to or parallel to the X, Y, Z directions; the main springs of the vibration reduction blocks which are oppositely arranged in an up-down overlapped manner can provide effective elastic support in all directions; to generate a large load against the torque force of the motor.

2. The method for improving the service life of a heavy truck motor suspension cushion according to claim 1, wherein the vibration damping blocks are respectively arranged into a first vibration damping block (1) and a second vibration damping block (2), a hollow area is formed by hollowing the center of the vibration damping blocks, and the hollow area is of a non-circular design so as to be matched with a core body (3), so that the installation reliability of the whole product is improved.

3. The method for prolonging the service life of a heavy truck motor suspension cushion according to claim 1, wherein the hollow area is of a diamond structure, diamond through holes are formed in the diamond structure, and the inner walls of the diamond through holes are arranged to be irregularly curved surfaces.

4. The method for prolonging the service life of a heavy truck motor suspension cushion according to claim 3, wherein the hollow area of the vibration reduction block is provided with a first inner core (4A) and a second inner core (4B) which are diamond-shaped, the outer wall of the inner cores is inserted and provided with a main spring, and the main spring is arranged at an angle in the directions of X, Y, Z so as to improve the elastic supporting performance of the product.

5. The method for prolonging the service life of a heavy truck motor suspension cushion according to claim 4, wherein the number of the main springs is four, and the four sides corresponding to the diamond inner cores form a first main spring (8A) and a second main spring (8B) which are oppositely arranged in the first vibration reduction block (1) and the second vibration reduction block (2) in a head-to-tail manner; during assembly, the first main spring (8A) and the second main spring (8B) are symmetrically arranged along the joint surfaces of the first vibration reduction block (1) and the second vibration reduction block (2).

6. The method for improving the service life of a heavy truck motor suspension cushion according to claim 5, wherein the first main spring (8A) and the second main spring (8B) each comprise a partition plate (5) and a rubber portion, and the opposite positions of the adjacent partition plates (5) are separated by a space structure (9).

7. The method for improving the service life of a heavy truck motor suspension cushion according to claim 6, wherein the air-oriented structure (9) comprises an air-oriented structure one (91) and an air-oriented structure two (92), wherein the air-oriented structures (9) which are arranged oppositely are identical in shape, and the air-oriented structures (9) which are not arranged oppositely are different in shape.

8. The method for improving the service life of a heavy truck motor suspension cushion according to claim 7, wherein the first air-facing structure (91) is arranged in the width direction of the first vibration reduction block (1) and the second vibration reduction block (2), is close to one corner of the inner core diamond structure, extends inwards, is arranged along with the inner core, and wraps the inner core.

9. The method for improving the service life of a heavy truck motor suspension cushion according to claim 8, wherein the second hollow structure (92) is arranged in the length direction of the first vibration reduction block (1) and the second vibration reduction block (2), and comprises a middle straight surface section (92A) connected with the opposite side end surfaces of the main spring, and an outer straight surface section (92B) and an inner straight surface section (92C) connected with two sides of the middle straight surface section (92A), wherein the outer straight surface section (92B) and the inner straight surface section (92C) are parallel or approximately parallel to the outer edges of the vibration reduction blocks.

10. A motor suspension mat prepared using the method for improving the service life of a heavy truck motor suspension mat according to any one of claims 1 to 9.