Power unit suspension element

Abstract

The utility model discloses a power unit suspension element which comprises an upper connecting piece, a lower connecting piece, a mandrel, a rubber main spring and a lower limit. The lower connecting piece is a bowl-shaped structural piece, and a central through hole is formed in the center of a bottom plate of the lower connecting piece; the core shaft is fixed in the central through hole of the lower connecting piece through welding; a threaded through hole is formed in the center of the mandrel, one end of the threaded through hole is used for being connected with a vehicle body, and the other end of the threaded through hole is connected with a lower limit which is located on the side where the opening end of the lower connecting piece is located. The upper connecting piece is located on the side where the opening end of the lower connecting piece is located and located between the outer circumferential face of the lower limiting part and the inner circumferential face of the lower connecting piece, and the upper connecting piece is used for being connected with a power unit. The upper connecting piece, the lower connecting piece and the lower limiting piece are bonded together through the rubber main spring. When the upper connecting piece moves along with the power unit, the rubber main spring deforms; motion displacement of the power unit can be effectively controlled, and dynamic interference between the power unit and a peripheral system under the driving working condition is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field of tracked vehicles, and in particular relates to a power unit suspension element. Background Art

[0002] The power unit of a tracked vehicle is a very complex system, including auxiliary systems such as the engine, generator, thermal management system, intake and exhaust system, and lubrication system. With the integrated design of the power unit, the power auxiliary systems are all integrated and mounted on the power unit, making the originally narrow power compartment even more tight and cramped. The power unit is connected and fixed to the power compartment through a suspension element. Due to the compact installation space of the power compartment, a compact power unit suspension element is urgently needed to support the power unit, while effectively controlling the movement displacement of the power unit to avoid dynamic interference between the power unit and the surrounding systems under driving conditions. Utility Model Content

[0003] In view of this, the utility model provides a power unit suspension element, which can effectively control the movement displacement of the power unit and avoid dynamic interference between the power unit and the surrounding system under driving conditions.

[0004] The utility model is realized by the following technical solutions:

[0005] A power unit suspension element, comprising: an upper connecting piece, a lower connecting piece, a core shaft, a rubber main spring and a lower limiter;

[0006] The lower connecting member is a bowl-shaped structural member, and a central through hole is provided at the center of the bottom plate of the lower connecting member; the core shaft is fixed in the central through hole of the lower connecting member by welding; and a threaded through hole is provided at the center of the core shaft, one end of the threaded through hole is used to connect to the vehicle body, and the other end is connected to the lower limit, and the lower limit is located on the side where the opening end of the lower connecting member is located; the upper connecting member is located on the side where the opening end of the lower connecting member is located, and is located between the outer circumferential surface of the lower limit and the inner circumferential surface of the lower connecting member, and the upper connecting member is used to connect the power unit; the upper connecting member, the lower connecting member and the lower limit are bonded together by a rubber main spring; when the upper connecting member moves with the power unit, the rubber main spring is deformed;

[0007] The lower limit is provided with a restoring limit structure and a compressing limit structure, and the restoring limit structure and the compressing limit structure are used to limit the vertical movement of the upper connecting member along with the power unit;

[0008] The core shaft is provided with a radial limiting structure, and the radial limiting structure is used to limit the horizontal movement of the upper connecting member along with the power unit.

[0009] Furthermore, the lower connecting piece is composed of a truncated cone section and a cylindrical section, the small diameter end of the truncated cone section is closed, the large diameter end of the truncated cone section is open, and is connected to the cylindrical section with openings at both ends; the central through hole is arranged at the small diameter end of the truncated cone section.

[0010] Furthermore, both ends of the central through hole are provided with chamfers.

[0011] Furthermore, the core shaft is a T-shaped structure, the horizontal part of the T-shaped structure is a plate body formed by symmetrically cutting off two arched plates from a circular plate, the plate body serves as a flange of the core shaft, and two mutually parallel planes after cutting off the two arched plates serve as torsion limiters of the flange; the vertical part of the T-shaped structure is a cylinder, and the cylinder is coaxial with the plate body; the threaded through hole on the core shaft passes through the plate body and the cylinder, and the threaded through hole is coaxial with the cylinder;

[0012] When the core shaft is welded and fixed in the central through hole of the lower connecting part, the vertical part of the core shaft is located inside the lower connecting part, and the flange of the core shaft is against the bottom of the lower connecting part; the end where the flange of the threaded through hole of the core shaft is located is used to connect to the attachment seat of the vehicle body, and the end where the cylindrical end of the threaded through hole of the core shaft is located is used to connect to the lower limit.

[0013] Furthermore, the lower limit is a screw-shaped structure, comprising a screw, a flange and a limit rubber; the flange is located at the end of the screw, and the two are integrally formed; the limit rubber is vulcanized on the outer end surface of the flange, and the inner end surface of the flange is an annular inclined surface;

[0014] The annular inclined surface is a restoring limiting structure of the power unit suspension element, and the limiting rubber is a compressing limiting structure of the power unit suspension element;

[0015] When the upper connecting member moves upwards for a certain distance along with the power unit, the annular limiting boss of the annular boss of the upper connecting member contacts the annular inclined surface of the lower limiting flange, and the lower limiting flange limits the upward movement of the upper connecting member and restricts the restoring movement of the upper connecting member;

[0016] When the upper connecting member moves downward a certain distance along with the power unit, the limiting rubber of the lower limit contacts the mounting surface of the power unit, and the limiting rubber limits the downward compression movement of the upper connecting member.

[0017] Furthermore, a circular countersunk hole is processed in the center of the flange, and a hexagonal hole is processed at the bottom of the circular countersunk hole. The hexagonal hole is used to cooperate with a hexagonal wrench to screw the lower limit screw into the threaded through hole of the core shaft until the flange at the end of the screw rests against the cylindrical end of the core shaft.

[0018] Furthermore, the hardness of the limiting rubber is 70 degrees Shore.

[0019] Further, the upper connecting member is a square plate, and mounting holes are provided at the four corners of the square plate for connecting with the power unit; a circular through hole is provided at the center of the upper connecting member, and an annular boss coaxial with the circular through hole is provided along the outer edge of the circular through hole, and the end of the annular boss is inclined toward the center direction of the upper connecting member, so that the annular boss forms a stepped structure, and the lower bottom surface of the inclined part of the annular boss is provided with an annular limiting boss coaxial with the circular through hole;

[0020] The annular boss of the upper connecting member is located between the outer circumferential surface of the lower limit and the inner circumferential surface of the lower connecting member, and the annular boss of the annular boss of the upper connecting member is opposite to the annular inclined surface of the flange of the lower limit; the inner circumferential surface of the annular boss of the upper connecting member is opposite to the outer circumferential surface of the cylinder of the core shaft; the end surface of the square plate of the upper connecting member is higher than the end surface of the limit rubber of the lower limit;

[0021] The cylinder of the core shaft is a radial limiting structure of the power unit suspension element; when the upper connecting member moves horizontally a certain distance with the power unit, one side of the inner circumferential surface of the annular boss of the upper connecting member contacts the outer circumferential surface of the cylinder of the core shaft, and the outer circumferential surface of the cylinder of the core shaft limits the radial movement of the upper connecting member.

[0022] Furthermore, the rubber main spring fills the internal space of the bowl-shaped structure of the lower connecting piece, and the annular boss of the upper connecting piece and the lower limit flange located in the lower connecting piece are bonded together with the lower connecting piece; and both ends of the rubber main spring are provided with concave recesses for suspending the rubber material extrusion space of the stressed rubber main spring.

[0023] Furthermore, the rubber main spring is made of natural rubber with a hardness of 65 degrees Shore.

[0024] Beneficial effects:

[0025] (1) The power unit suspension element of the utility model is connected to the power unit through the mounting hole of the upper connecting member, and the threaded through hole of the core shaft is connected to the attachment seat of the vehicle body, thereby eliminating the upper and lower transition connecting structural members. The installation space is the space of the power unit suspension element. The power unit suspension element has a compact structure, which solves the problem of narrow power compartment space and insufficient suspension installation space, thereby realizing the installation of the power unit system in a narrow power compartment. The power unit suspension element is provided with a recovery limit structure, a compression limit structure, and a radial limit structure, which can provide support and vibration reduction for the power unit while effectively controlling the movement displacement of the power unit, that is, can effectively control the movement range of the power unit system within the target range, thereby improving the reliability of the power unit suspension element. Therefore, the power unit suspension element of the utility model is light in weight, compact in structure, and reliable in strength.

[0026] (2) The lower connecting member of the utility model is composed of a truncated cone section and a cylindrical section, and the taper angle of the truncated cone section can improve the radial stiffness of the suspension.

[0027] (3) Both ends of the central through hole of the truncated cone section of the lower connecting piece of the utility model are provided with chamfers, which facilitate the installation of the guide core shaft.

[0028] (4) The outer end surface of the lower limit flange of the utility model is vulcanized with limit rubber, and the inner end surface of the flange is an annular inclined surface, which can improve the stress size under suspension recovery and compression conditions; the limit rubber can reduce noise and impact when the limit is in contact.

[0029] (5) The rubber main spring of the utility model is made of natural rubber with a hardness of 65 degrees Shore, which can effectively attenuate the vibration of the power unit.

[0030] (6) The restoring limit structure and the compression limit structure of the power unit suspension element of the utility model can effectively control the vertical movement of the power unit within the target range; the radial limit structure of the power unit suspension element can effectively control the horizontal movement of the power unit within the target range. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural composition diagram of the utility model;

[0032] Figure 2 It is the appearance diagram of the utility model;

[0033] Figure 3 is a structural diagram of the upper connecting member;

[0034] Figure 4 is a structural diagram of the lower connecting member;

[0035] Figure 5 It is the structural diagram of the mandrel;

[0036] Figure 6 This is the structural diagram of the rubber main spring;

[0037] Figure 7 It is the structural diagram of the lower limit;

[0038] Among them, 1. upper connecting member, 11. circular through hole, 12. annular limiting boss;

[0039] 2. Lower connecting piece, 21. Central through hole, 22. Cone section, 23. Chamfer;

[0040] 3. Mandrel, 31. Torsion limit, 32. Threaded through hole;

[0041] 4. Rubber main spring, 41. concave;

[0042] 5. Lower limit, 51. Screw, 52. Limit rubber, 53. Flange, 54. Hexagon socket hole. DETAILED DESCRIPTION

[0043] The present invention is described in detail below with reference to the accompanying drawings and embodiments.

[0044] This embodiment provides a power unit suspension element, see attached Figure 1-Figure 2 , including: an upper connecting member 1, a lower connecting member 2, a core shaft 3, a rubber main spring 4 and a lower limit 5;

[0045] The lower connecting member 2 is a bowl-shaped structural member, and a central through hole 21 is provided in the center of the bottom plate of the lower connecting member 2; the mandrel 3 is fixed in the central through hole 21 of the lower connecting member 2 by welding; and a threaded through hole 32 is provided in the center of the mandrel 3, one end of the threaded through hole 32 is used to connect the vehicle body, and the other end is connected to the lower limit 5, and the lower limit 5 is located on the side where the opening end of the lower connecting member 2 is located; the upper connecting member 1 is located on the side where the opening end of the lower connecting member 2 is located, and is located between the outer circumferential surface of the lower limit 5 and the inner circumferential surface of the lower connecting member 2, and the upper connecting member 1 is used to connect the power unit; the upper connecting member 1, the lower connecting member 2 and the lower limit 5 are bonded together by the rubber main spring 4;

[0046] For details, see the attached Figure 4 The lower connecting member 2 is composed of a truncated cone section 22 and a cylindrical section. The small diameter end of the truncated cone section 22 is closed, and the large diameter end of the truncated cone section 22 is open and butted with the cylindrical section with openings at both ends. The cone angle of the truncated cone section 22 can improve the radial stiffness of the suspension. The central through hole 21 is arranged at the small diameter end of the truncated cone section 22, and both ends of the central through hole 21 are provided with chamfers 23, which facilitate the installation of the introduction mandrel 3.

[0047] For details, see the attached Figure 5 The core shaft 3 is a T-shaped structure. The horizontal part of the T-shaped structure is a plate body formed by symmetrically cutting off two arched plates from a circular plate. The plate body serves as a flange of the core shaft 3. Two mutually parallel planes after cutting off the two arched plates serve as torsion limiters 31 of the flange. The vertical part of the T-shaped structure is a cylinder, which is coaxial with the plate body. The threaded through hole 32 on the core shaft 3 passes through the plate body and the cylinder, and the threaded through hole 32 is coaxial with the cylinder.

[0048] When the mandrel 3 is welded and fixed in the central through hole 21 of the lower connecting member 2, the vertical part of the mandrel 3 is located inside the lower connecting member 2, and the flange of the mandrel 3 is against the bottom of the lower connecting member 2; the end where the flange of the threaded through hole 32 of the mandrel 3 is located is used to connect to the attachment seat of the vehicle body, and the end where the cylindrical end of the threaded through hole 32 of the mandrel 3 is located is used to connect to the lower limit 5;

[0049] For details, see the attached Figure 7The lower limit 5 is a screw-shaped structure, comprising a screw rod 51, a flange 53 and a limit rubber 52; the flange 53 is located at the end of the screw rod 51, and the two are integrally formed; a circular countersunk hole is processed in the center of the flange 53, and a hexagonal hole 54 is processed at the bottom of the circular countersunk hole, and the hexagonal hole 54 is used to cooperate with a hexagonal wrench to screw the screw rod 51 of the lower limit 5 into the threaded through hole 32 of the core shaft 3 until the flange 53 at the end of the screw rod 51 abuts against the cylindrical end of the core shaft 3; wherein, the limit rubber 52 is vulcanized on the outer end surface of the flange 53, and the inner end surface of the flange 53 is an annular bevel, which can improve the stress size under the suspension recovery and compression conditions; the hardness of the limit rubber 52 is 70 degrees Shore, which can reduce the noise and impact during the limit contact.

[0050] For details, see the attached Figure 3 The upper connecting member 1 is a square plate, and mounting holes are provided at the four corners of the square plate for connecting with the power unit; a circular through hole 11 is provided at the center of the upper connecting member 1, and an annular boss coaxial with the circular through hole 11 is provided along the outer edge of the circular through hole 11, and the end of the annular boss is inclined toward the center direction of the upper connecting member 1, so that the annular boss forms a stepped structure, and the lower bottom surface of the inclined part of the annular boss is provided with an annular limiting boss 12 coaxial with the circular through hole;

[0051] The annular boss of the upper connecting member 1 is located between the outer circumferential surface of the lower limit 5 and the inner circumferential surface of the lower connecting member 2, and the annular limiting boss 12 of the annular boss of the upper connecting member 1 is opposite to the annular inclined surface of the flange 53 of the lower limit 5; the inner circumferential surface of the annular boss of the upper connecting member 1 is opposite to the outer circumferential surface of the cylinder of the core shaft 3; the end surface of the square plate of the upper connecting member 1 is higher than the end surface of the limiting rubber 52 of the lower limit 5;

[0052] For details, see the attached Figure 6 The rubber main spring 4 is made of natural rubber with a hardness of 65 degrees Shore, which can effectively attenuate the vibration of the power unit;

[0053] The rubber main spring 4 fills the internal space of the bowl-shaped structure of the lower connecting member 2, and bonds the annular boss of the upper connecting member 1 and the flange 53 of the lower limit 5 located in the lower connecting member 2 to the lower connecting member 2; and both ends of the rubber main spring 4 are provided with recesses 41 for suspending the rubber material extrusion space of the stressed rubber main spring.

[0054] Working process:

[0055] The power unit suspension is connected to the power unit through the mounting hole of the upper connecting member 1, and the threaded through hole 32 of the core shaft 3 is connected to the attachment seat of the vehicle body, eliminating the existing upper and lower transition connection structural members, and the installation space is the power unit suspension space. The power unit suspension element has a compact structure, which solves the problem of narrow power compartment space and insufficient suspension installation space.

[0056] The power unit suspension element is provided with upper and lower limit and radial limit structures, which provide support and vibration reduction for the power unit, and can effectively control the movement displacement of the power unit and improve the reliability of the suspension element; specifically:

[0057] When the upper connecting member 1 moves upward a certain distance with the power unit, the annular limiting boss 12 of the annular boss of the upper connecting member 1 will contact the annular inclined surface of the flange 53 of the lower limit 5, and the flange 53 of the lower limit 5 limits the upward movement of the upper connecting member 1 and restricts the restoring movement of the upper connecting member 1. The annular inclined surface of the flange 53 of the lower limit 5 is a restoring limiting structure of the suspension element of the power unit, that is, an upper limit structure;

[0058] When the upper connecting member 1 moves downward a certain distance with the power unit, the limiting rubber 52 of the lower limit 5 will contact the mounting surface of the power unit, and the limiting rubber 52 limits the downward compression movement of the upper connecting member 1; the limiting rubber 52 is the compression limiting structure of the power unit suspension element, that is, the lower limiting structure; the recovery limiting structure and the compression limiting structure of the power unit suspension element can effectively control the vertical movement of the power unit within the target range.

[0059] When the upper connecting member 1 moves horizontally a certain distance with the power unit, one side of the inner circumferential surface of the annular boss of the upper connecting member 1 contacts the outer circumferential surface of the cylinder of the core shaft 3, and the outer circumferential surface of the cylinder of the core shaft 3 limits the radial movement of the upper connecting member 1; the cylinder of the core shaft 3 is a radial limiting structure of the power unit suspension element, and the radial limiting structure of the power unit suspension element can effectively control the horizontal movement of the power unit within the target range.

[0060] In summary, the above are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A power unit suspension element, characterized in that: include: Upper connecting piece, lower connecting piece, mandrel, rubber main spring and lower limiter; The lower connecting member is a bowl-shaped structural member, and a central through hole is provided at the center of the bottom plate of the lower connecting member; the core shaft is fixed in the central through hole of the lower connecting member by welding; and a threaded through hole is provided at the center of the core shaft, one end of the threaded through hole is used to connect to the vehicle body, and the other end is connected to the lower limit, and the lower limit is located on the side where the opening end of the lower connecting member is located; the upper connecting member is located on the side where the opening end of the lower connecting member is located, and is located between the outer circumferential surface of the lower limit and the inner circumferential surface of the lower connecting member, and the upper connecting member is used to connect the power unit; the upper connecting member, the lower connecting member and the lower limit are bonded together by a rubber main spring; when the upper connecting member moves with the power unit, the rubber main spring is deformed; The lower limit is provided with a restoring limit structure and a compressing limit structure, and the restoring limit structure and the compressing limit structure are used to limit the vertical movement of the upper connecting member along with the power unit; The core shaft is provided with a radial limiting structure, and the radial limiting structure is used to limit the horizontal movement of the upper connecting member along with the power unit.

2. A power unit suspension element according to claim 1, characterized in that: The lower connecting piece is composed of a truncated cone section and a cylindrical section. The small diameter end of the truncated cone section is closed, and the large diameter end of the truncated cone section is open and connected with the cylindrical section with openings at both ends. The central through hole is arranged at the small diameter end of the truncated cone section.

3. A power unit suspension element as claimed in claim 2, characterized in that: Both ends of the central through hole are provided with chamfers.

4. A power unit suspension element according to any one of claims 1 to 3, characterized in that: The core shaft is a T-shaped structure, the horizontal part of which is a plate body formed by symmetrically cutting off two arched plates from a circular plate, the plate body serving as the flange of the core shaft, and the two mutually parallel planes after cutting off the two arched plates serving as torsion limiters of the flange; the vertical part of the T-shaped structure is a cylinder, which is coaxial with the plate body; the threaded through hole on the core shaft passes through the plate body and the cylinder, and the threaded through hole is coaxial with the cylinder; When the core shaft is welded and fixed in the central through hole of the lower connecting part, the vertical part of the core shaft is located inside the lower connecting part, and the flange of the core shaft is against the bottom of the lower connecting part; the end where the flange of the threaded through hole of the core shaft is located is used to connect to the attachment seat of the vehicle body, and the end where the cylindrical end of the threaded through hole of the core shaft is located is used to connect to the lower limit.

5. A power unit suspension element as claimed in claim 4, characterized in that: The lower limit is a screw-shaped structure, comprising a screw, a flange and a limit rubber; the flange is located at the end of the screw, and the two are integrally formed; the limit rubber is vulcanized on the outer end surface of the flange, and the inner end surface of the flange is an annular inclined surface; The annular inclined surface is a restoring limiting structure of the power unit suspension element, and the limiting rubber is a compressing limiting structure of the power unit suspension element; When the upper connecting member moves upwards for a certain distance along with the power unit, the annular limiting boss of the annular boss of the upper connecting member contacts the annular inclined surface of the lower limiting flange, and the lower limiting flange limits the upward movement of the upper connecting member and restricts the restoring movement of the upper connecting member; When the upper connecting member moves downward a certain distance along with the power unit, the limiting rubber of the lower limit contacts the mounting surface of the power unit, and the limiting rubber limits the downward compression movement of the upper connecting member.

6. A power unit suspension element as claimed in claim 5, characterized in that: A circular countersunk hole is processed in the center of the flange, and a hexagonal hole is processed at the bottom of the circular countersunk hole. The hexagonal hole is used to cooperate with a hexagonal wrench to screw the lower limit screw into the threaded through hole of the core shaft until the flange at the end of the screw rests against the cylindrical end of the core shaft.

7. A power unit suspension element as claimed in claim 5, characterized in that: The hardness of the limiting rubber is 70 degrees Shore.

8. A power unit suspension element as claimed in claim 5, characterized in that: The upper connecting member is a square plate, and mounting holes are provided at the four corners of the square plate for connecting with the power unit; a circular through hole is provided at the center of the upper connecting member, and an annular boss coaxial with the circular through hole is provided along the outer edge of the circular through hole, and the end of the annular boss is inclined toward the center direction of the upper connecting member, so that the annular boss forms a stepped structure, and the lower bottom surface of the inclined part of the annular boss is provided with an annular limiting boss coaxial with the circular through hole; The annular boss of the upper connecting member is located between the outer circumferential surface of the lower limit and the inner circumferential surface of the lower connecting member, and the annular boss of the annular boss of the upper connecting member is opposite to the annular inclined surface of the flange of the lower limit; the inner circumferential surface of the annular boss of the upper connecting member is opposite to the outer circumferential surface of the cylinder of the core shaft; the end surface of the square plate of the upper connecting member is higher than the end surface of the limit rubber of the lower limit; The cylinder of the core shaft is a radial limiting structure of the power unit suspension element; when the upper connecting member moves horizontally a certain distance with the power unit, one side of the inner circumferential surface of the annular boss of the upper connecting member contacts the outer circumferential surface of the cylinder of the core shaft, and the outer circumferential surface of the cylinder of the core shaft limits the radial movement of the upper connecting member.

9. A power unit suspension element as claimed in claim 8, characterized in that: The rubber main spring fills the internal space of the bowl-shaped structure of the lower connecting piece, and the annular boss of the upper connecting piece and the lower limit flange located in the lower connecting piece are bonded together with the lower connecting piece; and both ends of the rubber main spring are provided with concave portions for suspending the rubber material extrusion space of the stressed rubber main spring.

10. A power unit suspension element as claimed in claim 9, characterized in that: The rubber main spring is made of natural rubber with a hardness of 65 degrees Shore.

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