Powertrain suspension support and mounting method therefor

Abstract

A powertrain suspension support and a mounting method therefor. The powertrain suspension support comprises: a mounting bracket (1) comprising a bushing seat (11); a damping bushing assembly (2) comprising an inner bushing (21), a damping block (22) and an outer bushing (23), which are sequentially arranged from the inside out, wherein the damping bushing assembly (2) is mounted in the bushing seat (11); a first limiting mechanism (3), which is connected to the inner bushing (21) and is configured to limit the displacement of the inner bushing (21) in the axial direction of the damping bushing assembly (2); and a second limiting mechanism (4), which is connected to the outer bushing (23), is arranged on the bushing seat (11), and is configured to limit the displacement of the outer bushing (23) in the axial direction of the damping bushing assembly (2).

Description

Powertrain suspension bracket and method of installing the same

[0001] Cross-reference to related applications

[0002] This application is based on and claims priority to CN application No. 202411817137.6, filed on December 10, 2024, the disclosure of which is incorporated herein in its entirety. TECHNICAL FIELD

[0003] The present disclosure relates to the field of vehicle manufacturing, and in particular, to a powertrain suspension bracket and a method of installing the same. BACKGROUND

[0004] At present, in traditional fuel engine vehicles, the powertrain suspension bracket is mainly used to bear the engine, gearbox, transfer case and other components. Through the suspension system, the vibration and noise generated by these components during work can be effectively reduced, and the comfort and stability of the vehicle can be improved.

[0005] In some related technologies, the shock-absorbing block in the suspension bracket is generally an elastomer material. When other parts connected to the shock-absorbing block exert excessive axial force on it, it will tear and be damaged. Because the electric drive system accelerates quickly, it may cause the shock-absorbing bushing to tear during the process of rapid acceleration and rapid braking, thereby affecting the service life of the bushing. SUMMARY

[0006] Therefore, the present disclosure provides a powertrain suspension bracket and a method of installing the same, which can improve the service life of the shock-absorbing bushing.

[0007] In one aspect of the present disclosure, a powertrain suspension bracket is provided, comprising:

[0008] a mounting bracket comprising a bushing seat;

[0009] a shock-absorbing bushing assembly comprising, from inside to outside, an inner bushing, a shock-absorbing block and an outer bushing, the shock-absorbing bushing assembly being installed into the bushing seat;

[0010] a first limiting mechanism connected to the inner bushing, for limiting the displacement of the inner bushing in the axial direction of the shock-absorbing bushing assembly;

[0011] a second limiting mechanism connected to the outer bushing and arranged on the bushing seat, for limiting the displacement of the outer bushing in the axial direction of the shock-absorbing bushing assembly.

[0012] In some embodiments, the powertrain suspension bracket further comprises:

[0013] a connecting piece penetrating the inner bushing,

[0014] The first limiting mechanism is fixedly connected with the connecting piece and limits the inner bushing at least at one end in the axial direction.

[0015] In some embodiments, the first limiting mechanism comprises:

[0016] The first limiting piece has a first through hole for the connecting piece to pass through and is fixedly abutted with the inner bushing in the axial direction.

[0017] The second limiting piece has a second through hole for the connecting piece to pass through, is arranged between the first limiting piece and the inner bushing, and is respectively abutted with the first limiting piece and the inner bushing.

[0018] In some embodiments, the second limiting piece in the first limiting mechanism is a spacer with selectable specifications, and the axial lengths of the spacers with different specifications are different.

[0019] In some embodiments, the first limiting piece has a mounting portion for mounting the power assembly suspension bracket to the vehicle frame.

[0020] In some embodiments, the mounting portion comprises a pair of connecting holes perpendicular to the axial direction of the damping bushing assembly and arranged on both sides of the first through hole, and the power assembly suspension bracket is mounted to the vehicle frame through threaded connecting pieces.

[0021] In some embodiments, the first limiting mechanism comprises:

[0022] The first limiting piece and the second limiting piece are arranged on one side of the inner bushing in the axial direction of the damping bushing assembly, and the first limiting piece and the second limiting piece are arranged on the other side of the inner bushing in the axial direction of the damping bushing assembly.

[0023] In some embodiments, the connecting piece comprises:

[0024] The pin shaft comprises a threaded segment and an end head, and the threaded segment and the end head are located at both ends of the pin shaft.

[0025] In some embodiments, the connecting piece further comprises:

[0026] The locking mechanism is used to lock the first limiting piece, the second limiting piece, and the inner bushing relative to the pin shaft, and comprises:

[0027] The nut is arranged on the threaded segment of the pin shaft and is used to lock the first limiting piece, the second limiting piece, and the inner bushing relative to the pin shaft; and

[0028] A gasket is arranged between the first limiting member and the nut away from the end head and abuts against the first limiting member and the nut respectively.

[0029] In some embodiments, the threaded section is provided with an anti-rotation pin hole, the nut is provided with an anti-rotation pin slot configured to be aligned with the anti-rotation pin hole when the nut is screwed to a predetermined position;

[0030] The locking mechanism further comprises:

[0031] An anti-rotation pin is arranged in the anti-rotation pin slot and the anti-rotation pin hole to prevent relative rotation between the nut and the pin shaft.

[0032] In some embodiments, the second limiting mechanism comprises an end cover plate fixedly connected to the bushing seat and comprising an axial flange fixedly abutting against the outer bushing; the bushing seat has a blocking portion located at an end of the bushing seat away from the end cover plate and fixedly abutting against the outer bushing.

[0033] In some embodiments, the end cover plate further comprises a fastening through hole, and the bushing seat comprises a fastening hole arranged parallel to the axial direction, so that the end cover plate is fixedly connected to the bushing seat by a fastener passing through the fastening through hole and the fastening hole.

[0034] In some embodiments, the first limiting mechanism comprises:

[0035] A first limiting member having an H-shaped mounting portion for mounting the power assembly suspension bracket to a vehicle frame;

[0036] Part of the fastener is located in the avoiding space formed by the mounting portion.

[0037] In some embodiments, the mounting bracket further comprises a mounting bottom plate and a pad, and the mounting bottom plate is configured to be fixedly connected to a power assembly through the pad.

[0038] In some embodiments, the pad is optional in different specifications, and the thickness of the pad in different specifications is different.

[0039] In some embodiments, the mounting bracket further comprises:

[0040] A plurality of mounting holes arranged in pairs on the mounting bottom plate;

[0041] Two connecting rib plates fixedly connected to the mounting bottom plate and forming a lifting lug for fixedly connecting to the bushing seat, the two connecting rib plates extending along the surface of the mounting bottom plate and passing through the interval between each pair of mounting holes respectively; and

[0042] A weight-reducing hole is arranged on the mounting base and between the two connecting webs.

[0043] In another aspect of the present disclosure, a mounting method of a power assembly suspension bracket is provided, comprising:

[0044] providing the mounting bracket and the damping bushing assembly;

[0045] mounting the damping bushing assembly into the bushing seat of the mounting bracket;

[0046] mounting the first limiting mechanism and the second limiting mechanism to form a power assembly suspension bracket;

[0047] mounting the power assembly suspension bracket to a power assembly through the mounting bracket;

[0048] connecting the power assembly suspension bracket with a vehicle frame so as to mount the power assembly on the vehicle frame.

[0049] In some embodiments, the mounting method further comprises:

[0050] when mounting the first limiting mechanism, fixedly connecting the first limiting mechanism with the connecting piece and passing the connecting piece through the inner bushing.

[0051] Therefore, according to the embodiments of the present disclosure, by arranging the first limiting mechanism and the second limiting mechanism, when the power assembly is axially displaced due to inertia caused by sudden acceleration or sudden braking of the vehicle, the first limiting mechanism and the second limiting mechanism can limit the axial displacement of the inner bushing and the outer bushing, thereby effectively reducing the deformation amount of the shock-absorbing block between the inner bushing and the outer bushing, and preventing the shock-absorbing block from being torn. BRIEF DESCRIPTION OF DRAWINGS

[0052] The accompanying drawings, which form a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0053] The present disclosure can be understood more readily by reference to the following detailed description, taken in connection with the accompanying drawings, in which:

[0054] FIG. 1 is a cross-sectional schematic view of a power assembly suspension bracket according to some embodiments of the present disclosure;

[0055] FIG. 2 is a cross-sectional schematic view of a portion of FIG. 1;

[0056] FIG. 3 is a cross-sectional schematic view of a damping bushing assembly according to some embodiments of the power assembly suspension bracket of the present disclosure;

[0057] FIG. 4 is a schematic view of a first limiting member according to some embodiments of the power assembly suspension bracket of the present disclosure;

[0058] Fig. 5 is an exploded schematic view of a power assembly suspension bracket according to some embodiments of the present disclosure;

[0059] Fig. 6 is a schematic view of a power assembly suspension bracket according to some embodiments of the present disclosure connected with a power assembly;

[0060] Fig. 7 is a schematic view of a power assembly suspension bracket according to some embodiments of the present disclosure connected with a power assembly and mounted to a vehicle frame;

[0061] Fig. 8 is a flow schematic view of a mounting method of a power assembly suspension bracket according to some embodiments of the present disclosure;

[0062] It should be understood that the dimensions of the various parts shown in the drawings are not necessarily to scale. Furthermore, like or similar reference numerals are intended to represent like or similar parts throughout the specification.

[0063] BRIEF DESCRIPTION OF DRAWINGS: 100 - power assembly suspension bracket; 200 - power assembly; 300 - vehicle frame; 1 - mounting bracket; 11 - bushing seat; 12 - mounting base plate; 13 - cushion block; 14 - mounting hole; 15 - connecting rib plate; 16 - weight-reducing hole; 2 - shock-absorbing bushing assembly; 21 - inner bushing; 22 - shock-absorbing block; 23 - outer bushing; 3 - first limiting mechanism; 31 - first limiting member; 311 - first through hole; 312 - connecting hole; 313 - avoiding space; 32 - second limiting member; 321 - second through hole; 4 - second limiting mechanism; 41 - end cover plate; 42 - blocking portion; 43 - fastener; 5 - connecting member; 51 - pin shaft; 511 - threaded section; 512 - end head; 53 - nut; 54 - washer; 55 - anti-rotation pin. DETAILED DESCRIPTION

[0064] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative in nature and is in no way intended to limit the disclosure, its application or uses, nor is it intended to limit the application of the principles of the disclosure. The present disclosure can be implemented in numerous ways, including, but not limited to, the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the relative arrangement of components and steps, the components of materials, numerical expressions, and numerical values set forth in these embodiments are to be interpreted as merely exemplary, unless otherwise specifically stated, and are not to be construed as limiting.

[0065] The terms "first", "second", and similar terms used in the present disclosure do not denote any order, quantity, or importance, but are used to distinguish different parts. The terms "include", "comprise", and similar terms mean that the elements before the terms encompass the elements listed after the terms, and do not exclude the possibility of also encompassing other elements. "Up", "down", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute positions of the described objects are changed, the relative positional relationships can also be changed accordingly.

[0066] In the present disclosure, when it is described that a specific device is located between a first device and a second device, there can be an intervening device between the specific device and the first device or the second device, or there can be no intervening device. When it is described that a specific device is connected to another device, the specific device can be directly connected to the other device without an intervening device, or can not be directly connected to the other device with an intervening device.

[0067] All terms used in the present disclosure, including technical terms or scientific terms, have the same meanings as those understood by a person of ordinary skill in the art to which the present disclosure belongs, unless otherwise specifically defined. It should also be understood that terms defined in a generally used dictionary should be interpreted to have meanings consistent with the meanings in the context of the relevant technology, and should not be interpreted in an idealized or extremely formalized sense, unless otherwise clearly defined herein. The technologies, methods, and devices known to a person of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the specification where appropriate.

[0068] In some related technologies, the shock absorbing block in the suspension bracket is generally an elastomer material, which can be torn and damaged when other parts connected to the shock absorbing block exert excessive axial force on it. Due to the fast acceleration of the electric drive system, the tear of the shock absorbing bushing can occur during the process of rapid acceleration and rapid braking of the vehicle, thereby affecting the service life of the bushing.

[0069] It has been found through research that the related art does not limit the axial direction of the shock absorbing bushing in the power assembly suspension bracket, thereby causing the tear of the shock absorbing bushing.

[0070] Therefore, the present disclosure provides a power assembly suspension bracket and a mounting method thereof, which can improve the service life of the shock absorbing bushing.

[0071] FIG. 1 is a cross-sectional view of a power assembly suspension bracket according to some embodiments of the present disclosure, FIG. 2 is a cross-sectional view of a portion of FIG. 1, and FIG. 3 is a cross-sectional view of a shock absorbing bushing assembly in some embodiments of the power assembly suspension bracket according to the present disclosure.

[0072] Referring to FIGS. 1-3, some embodiments of the present disclosure provide a power assembly suspension bracket 100, comprising a mounting bracket 1, a damping bushing assembly 2, a first limiting mechanism 3 and a second limiting mechanism 4. The mounting bracket 1 comprises a bushing seat 11. The damping bushing assembly 2 comprises, from inside to outside, an inner bushing 21, a shock-absorbing block 22 and an outer bushing 23. The damping bushing assembly 2 is installed into the bushing seat 11. The first limiting mechanism 3 is connected with the inner bushing 21 and is used to limit the displacement of the inner bushing 21 in the axial direction of the damping bushing assembly 2. The second limiting mechanism 4 is connected with the outer bushing 23 and is arranged on the bushing seat 11 and is used to limit the displacement of the outer bushing 23 in the axial direction of the damping bushing assembly 2.

[0073] The first limiting mechanism 3 and the second limiting mechanism 4 limit the axial displacement of the inner bushing 21 and the outer bushing 23, so that the power assembly 200 cannot drive the power assembly suspension bracket 100 to cause excessive displacement of the inner bushing 21 and the outer bushing 23 even when the vehicle is rapidly accelerated or braked, the deformation amount of the shock-absorbing block 22 located between the inner bushing 21 and the outer bushing 23 is reduced, and the shock-absorbing block 22 is prevented from being torn and the service life of the damping bushing assembly 2 is prolonged.

[0074] Referring to FIG. 2, in some embodiments, the power assembly suspension bracket 100 comprises a connecting piece 5 which is arranged through the inner bushing 21. The first limiting mechanism 3 is fixedly connected with the connecting piece 5 and limits the inner bushing 21 at least at one end in the axial direction.

[0075] By fixedly connecting the first limiting mechanism 3 with the connecting piece 5, the axial positioning of the first limiting mechanism 3 itself can be ensured, thereby providing stable axial limiting action on the inner bushing 21. In the case where the inner bushing 21 needs to be limited at both ends in the axial direction, the first limiting mechanism 3 simultaneously limits the inner bushing 21 at both ends in the axial direction. In the case where the inner bushing 21 does not need to be limited at one end in the axial direction, for example, the inner bushing 21 is fixedly connected at one end in the axial direction, the first limiting mechanism 3 limits the inner bushing 21 at the other end in the axial direction. In this way, the inner bushing 21 can be limited at both ends in the axial direction.

[0076] Referring to FIG. 2, in some embodiments, the first limiting mechanism 3 comprises a first limiting piece 31 having a first through hole 311 for the connecting piece 5 to pass through and is fixedly abutted with the inner bushing 21 in the axial direction. The first limiting mechanism 3 further comprises a second limiting piece 32 having a second through hole 321 for the connecting piece 5 to pass through and is arranged between the first limiting piece 31 and the inner bushing 21 and abuts with the first limiting piece 31 and the inner bushing 21 respectively.

[0077] In this way, the first limiting member 31, the second limiting member 32 and the inner bushing 21 are all sleeved on the connecting member 5. Since the first limiting member 31 and the second limiting member 32 are fixedly connected with the connecting member 5, when the inner bushing 21 is subjected to an axial force, the inner bushing 21 will be limited by the first limiting member 31 and the second limiting member 32 and cannot be axially displaced.

[0078] Referring to FIG. 3, in some embodiments, the inner bushing 21 of the shock absorbing bushing assembly 2 can be a cylinder with a central through hole, the radial inner surface of the shock absorbing block 22 is shaped to match the shape of the radial outer surface of the inner bushing 21, and the radial inner surface of the outer bushing 23 is shaped to match the shape of the radial outer surface of the shock absorbing block 22.

[0079] In some embodiments, the radial outer surface of the shock absorbing block 22 is provided with a first protrusion, the radial inner surface of the shock absorbing block 22 is provided with a second protrusion, the radial inner surface of the outer bushing 23 is provided with a first recess, the first protrusion is embedded in the first recess, and the radial outer surface of the inner bushing 21 is provided with a second recess, and the second protrusion is embedded in the second recess. Such a configuration of the inner bushing 21, the shock absorbing block 22 and the outer bushing 23 can make the shock absorbing block 22 partially embedded in the inner bushing 21 and the outer bushing 23, and when subjected to an axial force, the shock absorbing block 22 is not easy to come out of the space defined by the inner bushing 21 and the outer bushing 23.

[0080] In some related technologies, the suspension bracket is usually connected with the vehicle frame through a sub-frame. Such an arrangement usually occupies a large chassis layout space, has a single form, poor adaptability, different power components need different suspension brackets to match, and is extremely inconvenient, time-consuming and laborious to install. The presence of the sub-frame also increases the weight of the whole vehicle.

[0081] FIG. 4 is a schematic view of the first limiting member in some embodiments of the power assembly suspension bracket according to the present disclosure, and FIG. 7 is a schematic view of the power assembly suspension bracket according to some embodiments of the present disclosure connected with the power assembly and installed to the vehicle frame.

[0082] Referring to FIGS. 4 and 7, in some embodiments, the first limiting member 31 has a mounting portion for mounting the power assembly suspension bracket 100 to the vehicle frame 300.

[0083] In some embodiments, the mounting portion includes a pair of connecting holes 312 perpendicular to the axial direction of the shock absorbing bushing assembly 2 and arranged on both sides of the first through hole 311, and the pair of connecting holes 312 are used to mount the power assembly suspension bracket 100 to the vehicle frame 300 through threaded connecting members.

[0084] According to different installation positions of the vehicle frame 300, the pair of connecting holes 312 can be arranged on the upper and lower sides or the left and right sides of the first through hole 311, for example; and the threaded connecting member can be a bolt, which is tightened with the threaded seat on the vehicle frame 300 according to a specified torque during installation.

[0085] Since the power assembly suspension support 100 has the first limiting member 31 and can be directly connected to the vehicle frame 300, the dependence of the power assembly suspension support on the subframe in the related art is reduced, and the installation space is saved by not arranging the subframe; and the power assembly suspension support 100 only needs to be installed or dismounted by installing or dismounting the threaded connecting member, which is convenient for installation and dismounting, saves time and labor, and saves labor cost.

[0086] Referring to FIG. 4, in some embodiments, in order to reduce the processing difficulty, the first limiting member 31 is provided with a boss extending in the axial direction at the position around the first through hole 311 on the two end faces, which can reduce the contact area when the first limiting member 31 abuts against the adjacent parts, and the planeness requirement of the end face of the first limiting member 31 is more easily met during processing.

[0087] Referring to FIGS. 1 and 2, in some embodiments, the second limiting member 32 is a spacer sleeve with optional specifications, and the axial lengths of the spacer sleeves with different specifications are different.

[0088] The second limiting member 32 being a spacer sleeve with optional specifications can realize the adjustability of the position of the first limiting member 31 in the axial direction by selecting different specifications of the spacer sleeves, so as to adjust the connecting hole 312 in the axial direction to a position matched with the installation position of the vehicle frame 300. This is beneficial to improve the adaptability of the power assembly suspension support 100 in the axial direction to different vehicle frames 300, further reduce the dependence of the power assembly suspension support 100 on the subframe, and expand the application scenarios of the power assembly suspension support 100.

[0089] In some embodiments, the first limiting mechanism 3 includes two groups of first limiting members 31 and second limiting members 32, one group of first limiting members 31 and second limiting members 32 is located on one side of the inner liner 21 in the axial direction of the damping liner assembly 2, and the other group of first limiting members 31 and second limiting members 32 is located on the other side of the inner liner 21 in the axial direction of the damping liner assembly 2.

[0090] In some frames, a plurality of threaded seats are arranged in pairs, each pair of threaded seats has a fixed distance in the axial direction. In order to adapt the connecting holes 312 of the two first limiters 31 to the frame 300, the axial distance between the two first limiters 31 in the two groups of first limiters 31 and second limiters 32 needs to be adjusted. In some embodiments, in the axial direction, the two first limiters 31 include the inner sleeve 21 and the two second limiters 32, different specifications of the second limiters 32 can be replaced to adjust the axial distance between the two first limiters 31, and the two second limiters 32 can be spacer sleeves of the same length or different lengths. This further improves the adaptability of the power assembly suspension bracket 100 to different frames.

[0091] Referring to FIG. 2, in some embodiments, the connecting piece 5 includes a pin shaft 51, the pin shaft 51 includes a threaded section 511 and an end head 512, and the threaded section 511 and the end head 512 are located at both ends of the pin shaft 51.

[0092] The rod section of the pin shaft 51 between the threaded section 511 and the end head 512 is used to sleeve the first limiter 31, the second limiter 32 and the inner sleeve 21, and in installation, the end head 512 abuts against the first limiter 31, for example, abuts against the boss on the end face of the first limiter 31 in FIG. 2.

[0093] In some embodiments, the connecting piece 5 further includes a locking mechanism for locking the first limiter 31, the second limiter 32 and the inner sleeve 21 relative to the pin shaft 51, and the locking mechanism includes a nut 53 and a washer 54, the nut 53 is arranged on the threaded section 511 of the pin shaft 51 and is used to lock the first limiter 31, the second limiter 32 and the inner sleeve 21 relative to the pin shaft 5, and the washer 54 is arranged between the first limiter 31 away from the end head 512 and the nut 53 and abuts against the first limiter 31 and the nut 53 respectively.

[0094] The locking mechanism has the nut 53 and the washer 54, when the nut 53 is tightened, the locking of the first limiter 31, the second limiter 32 and the inner sleeve 21 relative to the pin shaft 51 can be achieved, so that the axial positioning of the inner sleeve 21 is achieved; the washer 54 is arranged between the first limiter 31 away from the end head 512 and the nut 53 and abuts against the first limiter 31 and the nut 53 respectively, the washer 54 can provide a flat contact surface and uniformly distribute the pressure applied by the nut 53, so as to reduce the local stress concentration of the first limiter 31 and the nut 53.

[0095] To prevent the relative rotation of the nut 53 and the pin shaft 51, in some embodiments, the threaded section 511 is provided with an anti-rotation pin hole, and the nut 53 is provided with an anti-rotation pin slot configured to be aligned with the anti-rotation pin hole when the nut 53 is screwed to a predetermined position; the locking mechanism further includes an anti-rotation pin 55, which is simultaneously arranged in the anti-rotation pin slot and the anti-rotation pin hole, for preventing the relative rotation of the nut 53 and the pin shaft 51.

[0096] During the operation of the nut 53, it may be affected by the vibration of the power assembly 200 or other vibrations and rotate relative to the pin shaft 51, thereby deviating from the predetermined position; the anti-rotation pin 55 is arranged in such a way that when the nut 53 rotates relative to the pin shaft 51, it will be blocked by the anti-rotation pin 55 and thus cannot deviate from the predetermined position, thereby achieving the function of preventing the nut 53 from loosening. In FIGS. 1, 2 and 5, the anti-rotation pin slot is arranged at the axial end of the nut 53, and it should be understood that the anti-rotation pin slot can also be in other forms, such as a complete through hole arranged in the axial middle part of the nut 53.

[0097] When the vehicle is rapidly accelerated or braked, the inertia of the power assembly 200 is transmitted to the outer bushing 23 through the bushing seat 11. In order to axially limit the outer bushing 23, referring to FIG. 2, in some embodiments, the second limiting mechanism 4 includes an end cover plate 41 fixedly connected with the bushing seat 11 and including an axial flange fixedly abutting against the outer bushing 23; the bushing seat 11 has a blocking portion 42 located at one end of the bushing seat 11 away from the end cover plate 41 and fixedly abutting against the outer bushing 23.

[0098] By fixedly connecting the end cover plate 41 with the bushing seat 11, the axial position of the end cover plate 41 itself can be defined, thereby providing a stable limiting action for the outer bushing 23. One end of the outer bushing 23 axially abuts against the end cover plate 41, and the other end is fixedly abutted by the blocking portion 42, so that when the outer bushing 23 is subjected to an axial force, it will be limited within the axial range defined by the end cover plate 41 and the blocking portion 42, and will not deviate from the above axial range and excessively displace to cause the shock-absorbing block 22 to be torn. Moreover, both ends of the outer bushing 23 are fixedly abutted, so that the outer bushing 23 will not axially shift when subjected to an axial force, thereby causing the second limiting mechanism 4 to be impacted and damaged or generating noise. The end cover plate 41 can be a complete ring, can have an opening, or can be formed by multiple discontinuous parts.

[0099] In some embodiments, in order to form the fixed connection of the end cover plate 41 and the bushing seat 11, the end cover plate 41 further includes a fastening through hole, and the bushing seat 11 includes a fastening hole arranged parallel to the axial direction, so that the end cover plate 41 is fixedly connected to the bushing seat 11 by a fastener 43 arranged through the fastening through hole and the fastening hole.

[0100] The fastening hole can be a blind hole or a through hole, and the fastener 43 is screwed into the fastening through hole and then screwed into the fastening hole to fixedly connect the end cover plate 41 to the bushing seat 11. The fastener 43 can be a screw, for example; the fastening through hole, the fastening hole, and the fastener 43 are arranged in a circumferential direction, and the number and distribution position are not limited.

[0101] Referring to FIG. 4, in some embodiments, the first limiting mechanism 3 includes a first limiting piece 31 having an installation portion in the shape of H, used to install the power assembly suspension bracket 100 to the vehicle frame 300; wherein part of the fastener 43 is located in a relief space 313 formed by the installation portion.

[0102] Since the end cover plate 41 is fixedly connected to the bushing seat 11 by the fastener 43, the fastener 43 can be partially located outside the end cover plate 41 and the bushing seat 11; the first limiting piece 31 has a large volume due to the installation portion, which can cause interference with the fastener 43. By forming the relief space 313 on the installation portion, this situation can be avoided.

[0103] In FIG. 4, the installation portion includes two side portions arranged in parallel and an intermediate portion located between the two side portions, the intermediate portion is arranged at the middle of the length direction of the two side portions, and the side portions and the intermediate portion define the relief space on both sides of the intermediate portion. It should be understood that the position and shape of the relief space 313 can be adjusted according to the position and shape of the fastener 43 and the first limiting piece 31.

[0104] FIG. 5 is an exploded schematic view of some embodiments of the power assembly suspension bracket according to the present disclosure, and FIG. 6 is a schematic view of some embodiments of the power assembly suspension bracket according to the present disclosure connected to the power assembly.

[0105] Referring to FIG. 5, in some embodiments, the mounting bracket 1 further includes a mounting bottom plate 12 and a pad 13, and the mounting bottom plate 12 is configured to be fixedly connected to the power assembly 200 through the pad 13.

[0106] In some vehicles, after the power assembly suspension bracket and the power assembly are fixedly connected, there is a gap in the width direction with the threaded seat of the vehicle frame, and the power assembly suspension bracket cannot be installed to the vehicle frame. The power assembly suspension bracket 100 fixedly connects the mounting bottom plate 12 to the power assembly 200 through the pad 13, which can fill the above-mentioned gap between the vehicle frame 300 and the power assembly 200, so that the power assembly suspension bracket 100 connected to the power assembly 200 can be connected to the vehicle frame 300. The pad 13 is provided with a mounting through hole in the thickness direction.

[0107] In some embodiments, the specifications of the pad 13 can be selected, and the thicknesses of various specifications of the pad 13 are different.

[0108] The cushion block 13 can be selected according to the size of the frame 300 and the power assembly 200, so that the cushion block 13 is attached to the power assembly 200 to provide stable connection for the power assembly 200 and the power assembly suspension bracket 100.

[0109] In some embodiments, the mounting bracket 1 further comprises: a plurality of mounting holes 14 arranged in pairs on the mounting bottom plate 12; two connecting rib plates 15 fixedly connected to the mounting bottom plate 12 and forming lugs for fixedly connecting with the bushing seat 11, the two connecting rib plates 15 extending along the surface of the mounting bottom plate 12 and respectively passing through the interval part of each pair of mounting holes 14; and a weight-reducing hole 16 arranged on the mounting bottom plate 12 and arranged between the two connecting rib plates 15.

[0110] Referring to FIGS. 5 and 6, the plurality of mounting holes 14 arranged in pairs on the mounting bottom plate 12 match the suspension mounting holes of the power assembly 200, which can form more stable connection and reduce shaking or loosening after installation.

[0111] The lugs formed by the connecting rib plates 15 can be complete rings or have openings, and the length of the lugs can be adjusted according to the size of the frame 300 and the power assembly 200 to match the gap between the frame 300 and the power assembly 200.

[0112] The two connecting rib plates 15 extend along the surface of the mounting bottom plate, which is beneficial to increase the overall rigidity of the mounting bottom plate 12, and the two connecting rib plates 15 respectively pass through the interval part of each pair of mounting holes 14, which can provide additional support between the two mounting holes 14.

[0113] The weight-reducing hole 16 of the mounting bracket 1, for example, can be a through hole arranged on the mounting bottom plate 12 and arranged between the two connecting rib plates 15, which is used to eliminate redundant materials and is beneficial to reduce the weight of the power assembly suspension bracket 100.

[0114] According to the position of the suspension mounting hole on different power assemblies, the structure of the mounting holes 14, the mounting bottom plate 12, the cushion block 13 and the connecting rib plates 15 on the mounting bracket 1 can be adjusted, which can be used for the installation of different power assembly suspensions and is suitable for different types of power assemblies 200 and frames 300.

[0115] FIG. 8 is a flowchart of some embodiments of a mounting method of a power assembly suspension bracket according to the present disclosure. Referring to FIG. 8, the present disclosure provides a mounting method of a power assembly suspension bracket, which comprises:

[0116] Step S1: providing a mounting bracket 1 and a damping bushing assembly 2;

[0117] Step S2: installing the damping bushing assembly 2 into the bushing seat 11 of the mounting bracket 1;

[0118] Step S3: installing the first limiting mechanism 3 and the second limiting mechanism 4 to form the power assembly suspension bracket 100;

[0119] Step S4: installing the power assembly suspension bracket 100 to the power assembly 200 through the mounting bracket 1;

[0120] Step S5: connecting the power assembly suspension bracket 100 with the vehicle frame 300 so as to install the power assembly 200 on the vehicle frame 300.

[0121] It should be understood that the installation method of the power assembly suspension bracket includes the assembly of components, and also includes the installation thereof with the vehicle frame and the power assembly, the assembly of components including steps S1-S3, and the installation with the vehicle frame and the power assembly including steps S4-S5.

[0122] When installing the components of the power assembly suspension bracket 100, the mounting bracket 1 and the damping bushing assembly 2 can be provided first, the components of the mounting bracket 1 are fixedly connected, preferably connected by welding, the gasket 13 can be welded to the mounting bottom plate 12 first, and then the two connecting rib plates 15 are welded to the mounting bottom plate 12, the lifting lugs are left on the connecting rib plates 15 for welding with the bushing seat 11, and the mounting holes 14 on the mounting bottom plate 12 and the mounting through holes on the gasket 13 are processed after welding according to the positions of the suspension mounting holes on both sides of the power assembly 200; the precision of the connection between the power assembly suspension bracket 100 and the power assembly 200 can be ensured.

[0123] After the welding of the mounting bracket 1 is completed, the damping bushing assembly 2 is pressed into the bushing seat 11, the right side of the bushing seat 11 is provided with a blocking portion 42, the blocking portion 42 abuts against one end of the outer bushing 23 of the damping bushing assembly 2 in the axial direction, and is used for axially limiting the outer bushing 23 of the damping bushing assembly 2.

[0124] After the installation of the damping bushing assembly 2 is completed, the first limiting mechanism 3 and the second limiting mechanism 4 are installed to form the power assembly suspension bracket 100. The end cover plate 41 is provided with a fastening through hole, the left side of the bushing seat 11 is provided with a fastening hole, when the second limiting mechanism 4 is installed, the end cover plate 41 is assembled with the fastening hole on the bushing seat 11 by using the fastener 43, the axial flange on the end cover plate 41 abuts against the other end of the outer bushing 23 of the damping bushing assembly 2 in the axial direction, and is used for axially limiting the outer bushing 23.

[0125] When the first limiting mechanism 3 is installed, a pair of connecting holes 312 are arranged on the first limiting member 31, the first limiting member 31 is first inserted into the position of the end head 512 of the pin shaft 51, the left and right sides of the first limiting member 31 are provided with protrusions, the left protrusion of the first limiting member 31 abuts against the end head 512, then the second limiting member 32 is inserted into the pin shaft 51, the second limiting member 32 abuts against the right protrusion of the first limiting member 31, then the pin shaft 51 is inserted into the inner liner 21 of the shock absorbing liner assembly 2, the left second limiting member 32 is fixedly abutted against the inner liner 21 of the shock absorbing liner assembly 2, for axially limiting the inner liner 21 of the shock absorbing liner assembly 2, then the second limiting member 32, the first limiting member 31 and the gasket 54 are sequentially inserted into the pin shaft 51 from right to left on the liner seat 11, then the nut 53 is inserted into the tail of the pin shaft 51 and is tightened, the right second limiting member 32 of the liner seat 11 is fixedly abutted against the right inner liner 21 of the shock absorbing liner assembly 2, for axially limiting the inner liner 21 of the shock absorbing liner assembly 2, finally the anti-rotation pin 55 is inserted into the anti-rotation pin groove of the nut 53 and the anti-rotation pin hole of the threaded section 511 of the pin shaft 51, for anti-loosening.

[0126] After the power assembly suspension bracket 100 is installed, the power assembly suspension bracket 100 and the suspension mounting hole of the power assembly 200 are bolted according to the specified torque, only the structure form of the installation base plate 12, the cushion block 13 and the connecting rib plate 15 needs to be adjusted according to the position of the suspension mounting hole of the power assembly 200, which can be used for the installation of different power assembly suspension brackets 100.

[0127] After the power assembly suspension bracket 100 and the power assembly 200 are installed, the power assembly 200 is lifted from the bottom of the vehicle frame 300 by a lifting appliance, the screw connecting holes 312 on the first limiting members 31 on both sides of the power assembly suspension bracket 100 are bolted to the threaded seats on the vehicle frame 300 according to the specified torque, and the power assembly 200 and the vehicle frame 300 are installed.

[0128] The power assembly suspension bracket 100 limits the inner liner 21 and the outer liner 23 of the shock absorbing liner assembly 2 in the axial direction, so that the possibility of tearing of the shock absorbing block 22 is reduced and the service life of the shock absorbing block 22 is prolonged during the process of rapid acceleration and rapid braking of the vehicle, and the distance between the installation holes 14 of the two power assembly suspension brackets 100 on the two side beams of the vehicle frame 300 is adjusted by adjusting the thickness of the cushion block 13 and the length of the lifting lug of the connecting rib plate 15, so as to match the installation of the power assembly 200 on the vehicle frame 300 with different widths, and improve the adaptability of the power assembly suspension bracket 100 in the width direction of the power assembly 200.

[0129] The axial distance of the connecting hole 312 of the first limiting piece 31 at both ends of the first limiting mechanism 3 can be adjusted by selecting second limiting pieces 32 of different lengths, improving the adaptability of the power assembly suspension bracket 100 in the axial installation on different frames 300.

[0130] When the power assembly 200 is detached from the frame 300, only the bolt passing through the connecting hole 312 needs to be detached. The power assembly suspension bracket 100 according to the embodiment of the present disclosure is directly connected with the frame 300 through the bolt, removing the sub-frame in some related technologies, saving installation space, and being convenient to install and detach, saving time and labor, and saving labor cost.

[0131] So far, the embodiments of the present disclosure have been described in detail. In order to avoid obscuring the concept of the present disclosure, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.

[0132] Although some specific embodiments of the present disclosure have been described in detail through examples, those skilled in the art should understand that the above examples are only for illustration, not for limiting the scope of the present disclosure. Those skilled in the art should understand that the above embodiments can be modified or some technical features can be replaced equivalently without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A power assembly suspension bracket, comprising: a mounting bracket (1) comprising a bushing seat (11); a damping bushing assembly (2) comprising, from inside to outside, an inner bushing (21), a shock absorbing block (22) and an outer bushing (23), the damping bushing assembly (2) being mounted into the bushing seat (11); a first limiting mechanism (3) connected with the inner bushing (21) and used for limiting displacement of the inner bushing (21) in an axial direction of the damping bushing assembly (2); a second limiting mechanism (4) connected with the outer bushing (23) and arranged on the bushing seat (11), and used for limiting displacement of the outer bushing (23) in the axial direction of the damping bushing assembly (2).

2. The power assembly suspension bracket according to claim 1, further comprising: a connecting piece (5) penetrating the inner bushing (21), wherein the first limiting mechanism (3) is fixedly connected with the connecting piece (5) and limits the inner bushing (21) at least at one end in the axial direction.

3. The powertrain suspension bracket of claim 2, wherein, The first limiting mechanism (3) comprises: a first limiting piece (31) having a first through hole (311) for the connecting piece (5) to penetrate and being fixedly abutted with the inner bushing (21) in the axial direction; and a second limiting piece (32) having a second through hole (321) for the connecting piece (5) to penetrate, being arranged between the first limiting piece (31) and the inner bushing (21) and being abutted with the first limiting piece (31) and the inner bushing (21) respectively.

4. The powertrain suspension bracket of claim 3, wherein, The second limiting piece (32) in the first limiting mechanism (3) is a spacer with selectable specifications, and the axial lengths of the spacers of various specifications are different.

5. The powertrain suspension bracket of claim 3 or 4, wherein, The first limiting piece (31) has a mounting portion for mounting the power assembly suspension bracket (100) to a vehicle frame (300).

6. The powertrain suspension bracket of claim 5, wherein, The mounting portion comprises a pair of connecting holes (312) perpendicular to the axial direction of the damping bushing assembly (2) and arranged on both sides of the first through hole (311), and the pair of connecting holes (312) are used for mounting the power assembly suspension bracket (100) to the vehicle frame (300) through threaded connecting pieces.

7. The powertrain suspension bracket of any of claims 3-6, wherein, The first limiting mechanism (3) comprises: two groups of the first limiting piece (31) and the second limiting piece (32), one group of the first limiting piece (31) and the second limiting piece (32) being located on one side of the inner bushing (21) in the axial direction of the damping bushing assembly (2), and the other group of the first limiting piece (31) and the second limiting piece (32) being located on the other side of the inner bushing (21) in the axial direction of the damping bushing assembly (2).

8. The powertrain suspension bracket of any of claims 2-7, wherein, The connecting piece (5) comprises: a pin shaft (51) comprising a threaded segment (511) and an end head (512), the threaded segment (511) and the end head (512) being located at two ends of the pin shaft (51).

9. The powertrain suspension bracket of claim 8, wherein, The connecting piece (5) further comprises: A locking mechanism is arranged to lock the first limiting member (31), the second limiting member (32) and the inner bushing (21) relative to the pin shaft (51), and comprises: a nut (53) arranged on a threaded segment of the pin shaft (51) to lock the first limiting member (31), the second limiting member (32) and the inner bushing (21) relative to the pin shaft (51); and a washer (54) arranged between the first limiting member (31) and the nut (53) away from the end head (52) and abutting against the first limiting member (31) and the nut (53) respectively.

10. The powertrain suspension bracket of claim 9, wherein, The threaded segment is provided with an anti-rotation pin hole, and the nut (53) is provided with an anti-rotation pin slot configured to be aligned with the anti-rotation pin hole when the nut (53) is screwed into a predetermined position; The locking mechanism further comprises: an anti-rotation pin (55) penetrating the anti-rotation pin slot and the anti-rotation pin hole to prevent relative rotation of the nut (53) and the pin shaft (51).

11. The powertrain suspension bracket of any one of claims 1-10, wherein, The second limiting mechanism (4) comprises an end cover plate (41) fixedly connected with the bushing seat (11) and comprising an axial flange fixedly abutting against the outer bushing (23); the bushing seat (11) has a blocking portion (42) located at an end of the bushing seat (11) away from the end cover plate (41) and fixedly abutting against the outer bushing (23).

12. The powertrain suspension bracket of claim 11, wherein, The end cover plate (41) further comprises a fastening through hole, and the bushing seat (11) comprises a fastening hole arranged parallel to the axial direction, so that the end cover plate (41) is fixedly connected to the bushing seat (11) by penetrating the fastening through hole and the fastening hole with a fastener (43).

13. The powertrain suspension bracket of claim 12, wherein, The first limiting mechanism (3) comprises: a first limiting member (31) having an H-shaped mounting portion for mounting the power assembly suspension bracket (100) to the vehicle frame (300); wherein a part of the fastener (43) is located in a relief space (313) formed by the mounting portion.

14. The powertrain suspension cradle of any one of claims 1-13, wherein, The mounting bracket (1) further comprises a mounting bottom plate (12) and a cushion block (13), and the mounting bottom plate (12) is configured to be fixedly connected with the power assembly (200) through the cushion block (13).

15. The powertrain suspension bracket of claim 14, wherein, The cushion block (13) can be selected in different specifications, and the thickness of the cushion block (13) of each specification is different.

16. The powertrain suspension bracket of claim 14 or 15, wherein, The mounting bracket (1) further comprises: a plurality of mounting holes (14) arranged in pairs on the mounting bottom plate (12); two connecting rib plates (15) fixedly connected to the mounting bottom plate (12) and forming lugs for fixedly connecting with the bushing seat (11), the two connecting rib plates (15) extending along the surface of the mounting bottom plate (12) and passing through the interval between each pair of mounting holes (14) respectively; and a weight reduction hole (16) arranged on the mounting bottom plate (12) and between the two connecting rib plates (15).

17. A mounting method of the powertrain suspension support according to any one of claims 1-16, comprising: providing the mounting support (1) and the damping bushing assembly (2); mounting the damping bushing assembly (2) into the bushing seat (11) of the mounting support (1); mounting the first limiting mechanism (3) and the second limiting mechanism (4) to form the powertrain suspension support (100); mounting the powertrain suspension support (100) to the powertrain (200) through the mounting support (1); connecting the powertrain suspension support (100) with the vehicle frame (300) so as to mount the powertrain (200) on the vehicle frame (300).

18. The mounting method according to claim 17, further comprising: when mounting the first limiting mechanism (3), fixedly connecting the first limiting mechanism (3) with the connecting piece (5) and passing the connecting piece (5) through the inner bushing (21).

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