Hybrid forklift truck and powertrain suspension system thereof
By designing a powertrain mounting system with front and side suspensions in a hybrid forklift, the problem of poor vibration isolation was solved, achieving vibration reduction in six spatial directions and ensuring the overall vehicle comfort.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HANGCHA GRP
- Filing Date
- 2024-01-09
- Publication Date
- 2026-05-29
AI Technical Summary
The powertrain mounting system of hybrid forklifts lacks effective measures to isolate generator vibration, resulting in poor vibration isolation.
A powertrain mounting system including front and side mounts was designed. The front mount consists of a front mount buffer assembly, a front mount support, and a front mount bracket. The side mounts are configured as four units, each consisting of a side mount buffer assembly, a side mount support, and a side mount bracket. The front mount buffer assembly is set perpendicular to the crossbeam, while the side mount buffer assemblies are set at an angle, together playing a role in vibration reduction in six spatial directions.
It effectively isolates the vibration transmission of the powertrain, limits the front-to-rear displacement of the powertrain, and improves the overall comfort of the vehicle.
Smart Images
Figure CN117584726B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of hybrid forklift manufacturing technology, and more specifically, to a powertrain mounting system. Furthermore, this invention also relates to a hybrid forklift including the aforementioned powertrain mounting system. Background Technology
[0002] Hybrid forklifts are forklifts that are powered by both an engine and a battery. Based on the engine's external characteristics, they utilize the engine's optimal speed to convert mechanical energy into electrical energy through a generator. The electric motor then uses this electrical energy to drive the forklift, thereby achieving the goals of energy conservation and reducing environmental pollution, and thus enabling their widespread market application.
[0003] Currently, powertrain mounting systems are mostly used in traditional internal combustion forklifts, serving only as engine mounts. Their primary function is to isolate engine vibration transmission and support the powertrain while limiting its displacement. However, hybrid forklifts integrate the engine and generator as a range extender, requiring consideration not only of engine mount installation but also of generator mount installation. Currently, there is a lack of mounts to isolate generator vibration transmission, resulting in poor vibration isolation performance of the powertrain mounting system in hybrid forklifts.
[0004] In summary, how to solve the problem of poor vibration isolation effect of the powertrain mounting system in current hybrid forklifts is an urgent problem to be solved by those skilled in the art. Summary of the Invention
[0005] In view of this, the purpose of the present invention is to provide a powertrain mounting system that can reduce vibration in six spatial directions, effectively isolate the transmission of powertrain vibration, and effectively limit the forward and backward displacement of the powertrain.
[0006] Another object of the present invention is to provide a hybrid forklift including the powertrain mounting system described above.
[0007] To achieve the above objectives, the present invention provides the following technical solution:
[0008] A powertrain mounting system, comprising:
[0009] The powertrain includes an integrated engine and a generator, the generator being located in front of the engine;
[0010] The front suspension includes a front suspension buffer pad assembly, a front suspension bracket, and a front suspension support. The front suspension bracket is used to connect to the crossbeam of the vehicle frame, and the front suspension support is connected to the front side of the generator. The front suspension bracket and the front suspension support are connected through the front suspension buffer pad assembly, and the front suspension buffer pad assembly is arranged perpendicular to the crossbeam.
[0011] The side suspension includes a side suspension buffer pad assembly, side suspension supports and side suspension brackets located on different horizontal planes. The side suspension supports are used to connect to the side plates of the vehicle frame, and the side suspension brackets are connected to the side of the powertrain. The side suspension supports and the side suspension brackets are connected through the side suspension buffer pad assembly, and the side suspension buffer pad assembly is set at a certain angle.
[0012] The side suspensions are provided in four parts: a middle left suspension located between the left side of the generator and the left side plate of the vehicle frame; a middle right suspension located between the right side of the generator and the right side plate of the vehicle frame; a rear left suspension located between the left side of the engine and the left side plate of the vehicle frame; and a rear right suspension located between the right side of the engine and the right side plate of the vehicle frame.
[0013] Preferably, the front suspension buffer pad assembly includes two first buffer pads, two pressure pads, a sleeve, and a first fastener. The two first buffer pads are symmetrically arranged on both sides of the rear end of the front suspension support and pressed between the two pressure pads. The sleeve vertically passes through the two first buffer pads and connects between the two pressure pads. The first fastener passes through the inside of the sleeve and connects to the front suspension bracket.
[0014] Preferably, the compression of the first buffer pad closer to the front suspension bracket is greater than the compression of the first buffer pad farther away from the front suspension bracket.
[0015] Preferably, the rear end of the front suspension support is provided with a through hole, and each of the two first buffer pads is provided with a boss at one end near the front suspension support, and the two bosses are respectively inserted into the two ends of the through hole.
[0016] Preferably, the centerlines of the front suspension buffer assembly, the front suspension mount, and the front suspension bracket are collinear and intersect with the central axis of the powertrain.
[0017] Preferably, the side suspension buffer pad assembly includes a second buffer pad, a second fastener, a third fastener, and a first mounting plate and a second mounting plate that are parallel to each other. The second buffer pad is inclined and pressed between the first mounting plate and the second mounting plate. The second fastener passes through the side suspension bracket and the first mounting plate to connect the second buffer pad. The third fastener passes through the side suspension support and the second mounting plate to connect the second buffer pad.
[0018] Preferably, there are at least two second fasteners, and the second fasteners include a second bolt and a second nut. One end of the second bolt is fastened to the side suspension bracket by the second nut, and the other end passes through the first mounting plate and is vulcanized to the second buffer pad.
[0019] Preferably, the third fastener includes a screw hole block, a third bolt, and a third nut. The screw hole block passes through the second mounting plate and connects to the second buffer pad. One end of the third bolt is fastened to the side suspension support by the third nut, and the other end passes through the screw hole block and is vulcanized to the second buffer pad.
[0020] Preferably, the side suspension support is provided with a plurality of positioning holes, and the second mounting plate is provided with positioning blocks, the positioning blocks being adapted and engaged with the positioning holes.
[0021] A hybrid forklift, comprising the powertrain mounting system described in any of the preceding claims.
[0022] Compared to the aforementioned background technology, the powertrain mounting system provided by this invention includes front and side mounts. The front mount comprises a front mount buffer assembly, a front mount support, and a front mount bracket. The front mount bracket is fixed to the front side of the generator, and the front mount support is fixed to the crossbeam of the vehicle frame. The front mount buffer assembly is positioned between the front mount support and the front mount bracket, and is perpendicular to the crossbeam, meaning it is distributed along an axis parallel to the vehicle frame. This allows the front mount buffer to not only provide longitudinal vibration damping but also limit the fore-and-aft position of the powertrain during emergency braking and severe bumps, preventing interference between the powertrain and surrounding components. Four side mounts are provided: a center left mount, a center right mount, a rear left mount, and a rear right mount. The center left mount is mounted on the generator... The left side suspension is mounted between the left side panel of the engine and the left side panel of the frame. The middle right side suspension is mounted between the right side of the generator and the right side panel of the frame. The rear left side suspension is mounted between the left side of the engine and the left side panel of the frame, and the rear right side suspension is mounted between the right side of the engine and the right side panel of the frame. Each of the four side suspensions consists of a side suspension damping pad assembly, a side suspension bracket, and a side suspension support. The side suspension bracket is fixed to the side panel of the frame, and the side suspension support is fixed to the side of the generator or engine, which are located on different horizontal planes. The side suspension damping pad assembly is placed between the side suspension bracket and the side suspension support and is set at a certain angle. In this way, the side suspension damping pads placed on both sides of the generator and engine play a role in lateral, longitudinal, and vertical vibration reduction, that is, in six spatial directions, to effectively isolate the transmission of generator and engine vibration and ensure the comfort of the whole vehicle. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.
[0024] Figure 1 This is a top view of a powertrain mounting system provided by the present invention;
[0025] Figure 2 This is a schematic diagram of the front and side suspensions installed between the generator and the vehicle frame, as provided by the present invention.
[0026] Figure 3 This is a schematic diagram of the front suspension buffer pad assembly provided by the present invention;
[0027] Figure 4 This is a schematic diagram of the side suspension buffer pad assembly provided by the present invention;
[0028] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;
[0029] Figure 6 for Figure 4 A magnified view of a section at point B.
[0030] Figure 1-6 middle:
[0031] 1 is the generator, 2 is the engine, 3 is the crossbeam, 4 is the left side panel, 5 is the right side panel, 6 is the front mount, 7 is the middle left mount, 8 is the middle right mount, 9 is the rear left mount, and 10 is the rear right mount.
[0032] 61 is the front suspension support, 62 is the front suspension bracket, 63 is the front suspension buffer pad assembly, 631 is the first buffer pad, 632 is the pressure pad, 633 is the sleeve, 634 is the first bolt, 635 is the first nut, and 636 is the washer.
[0033] 71 is a side suspension support, 72 is a side suspension bracket, 73 is a side suspension buffer pad assembly, 731 is a second buffer pad, 732 is a first mounting plate, 733 is a second mounting plate, 734 is a second bolt, 735 is a second nut, 736 is a screw hole block, 737 is a third bolt, 738 is a third nut, and 739 is a positioning block. Detailed Implementation
[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0035] The core of this invention is to provide a powertrain mounting system that can reduce vibration in six spatial directions, effectively isolate the transmission of powertrain vibration, and effectively limit the forward and backward displacement of the powertrain.
[0036] Another core aspect of this invention is to provide a hybrid forklift that includes the aforementioned powertrain mounting system.
[0037] It should be noted that in this embodiment, "longitudinal" refers to the direction parallel to the axis of the chassis, i.e., the straight-line forward direction of the forklift; "lateral" refers to the direction perpendicular to the axis of the chassis, i.e., perpendicular to the forward direction of the forklift; and "vertical" refers to the direction perpendicular to the horizontal plane, i.e., perpendicular to the ground on which the forklift travels. Furthermore, the orientations or positional relationships indicated by terms such as "up," "down," "front," "rear," "left," and "right" are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0038] Please refer to Figure 1 and Figure 2 This application provides a powertrain mounting system, including a powertrain, a front mount 6, and side mounts.
[0039] The powertrain includes an integrated engine 2 and a generator 1, with the generator 1 located in front of the engine 2.
[0040] The front suspension 6 includes a front suspension buffer pad assembly 63, a front suspension bracket 61, and a front suspension support 62. The front suspension bracket 61 is used to connect the crossbeam 3 of the vehicle frame, and the front suspension support 62 is connected to the front side of the generator 1. The front suspension bracket 61 and the front suspension support 62 are connected through the front suspension buffer pad assembly 63, and the front suspension buffer pad assembly 63 is set perpendicular to the crossbeam 3.
[0041] The side suspension includes a side suspension buffer pad assembly 73, side suspension supports 71 located on different horizontal planes, and side suspension brackets 72. The side suspension supports 71 are used to connect to the side plates of the vehicle frame, and the side suspension brackets 72 are connected to the side of the powertrain. The side suspension supports 71 and the side suspension brackets 72 are connected through the side suspension buffer pad assembly 73, and the side suspension buffer pad assembly 73 is set at a certain angle.
[0042] The side suspensions are four in total: the middle left suspension 7 located between the left side of the generator 1 and the left side plate 4 of the frame; the middle right suspension 8 located between the right side of the generator 1 and the right side plate 5 of the frame; the rear left suspension 9 located between the left side of the engine 2 and the left side plate 4 of the frame; and the rear right suspension 10 located between the right side of the engine 2 and the right side plate 5 of the frame.
[0043] It should be noted that the generator 1 and the engine 2 are integrated, with the generator 1 located in front of the engine 2. The frame includes a left side plate 4, a right side plate 5, and a crossbeam 3 placed between the two. The front suspension 6 is installed between the front side of the generator 1 and the crossbeam 3. Specifically, the front suspension 6 consists of a front suspension damping pad assembly 63, a front suspension bracket 61, and a front suspension support 62. The front suspension support 62 is fixed to the front side of the generator 1, the front suspension bracket 61 is fixed to the crossbeam 3 of the frame, and the front suspension damping pad assembly 63 is placed between the front suspension bracket 61 and the front suspension support 62. The front suspension damping pad assembly 63 is perpendicular to the crossbeam 3, meaning that the front suspension damping pad assembly 63 is distributed along a direction parallel to the axis of the frame. In this way, the front suspension 6 damping pad not only plays a role in longitudinal vibration reduction, but also limits the fore-and-aft position of the powertrain under emergency braking and severe bump conditions to prevent the powertrain from interfering with the movement of surrounding components. There are four side suspensions: the middle left suspension 7, the middle right suspension 8, the rear left suspension 9, and the rear right suspension 10. The middle left suspension 7 is installed between the left side of the generator 1 and the left side plate 4 of the frame. The middle right suspension 8 is installed between the right side of the generator 1 and the right side plate 5 of the frame; the rear left suspension 9 is installed between the left side of the engine 2 and the left side plate 4 of the frame; and the rear right suspension 10 is installed between the right side of the engine 2 and the right side plate 5 of the frame. Specifically, each of the four side suspensions consists of a side suspension buffer pad assembly 73, a side suspension bracket 71, and a side suspension support 72. The side suspension bracket 71 is fixed to the left side plate 4 or the right side plate 5 of the frame, and the side suspension support 72 is fixed to the left and right sides of the generator 1 or the engine 2, respectively, and the two are located on different horizontal planes. The side suspension buffer pad assembly 73 is placed between the side suspension bracket 71 and the side suspension support 72 and is set at a certain angle. In this way, the side suspension buffer pads placed on the left and right sides of the generator 1 and the engine 2 play the role of lateral, longitudinal, and vertical vibration reduction, that is, the role of vibration reduction in six spatial directions, so as to effectively isolate the transmission of vibration of the generator 1 and the engine 2 and ensure the comfort of the whole vehicle.
[0044] Please refer to Figure 3Considering the specific structure of the front suspension buffer pad assembly 63, based on the above embodiment, the front suspension buffer pad assembly 63 includes two first buffer pads 631, two pressure pads 632, a sleeve 633 and fasteners. The two first buffer pads 631 are symmetrically arranged on both sides of the rear end of the front suspension support 61 and pressed between the two pressure pads 632. The sleeve 633 vertically penetrates the two first buffer pads 631 and connects between the two pressure pads 632. The fastener passes through the inside of the sleeve 633 and connects to the front suspension bracket 62.
[0045] Specifically, two first buffer pads 631 are symmetrically placed on the rear two sides of the front suspension support 61. Both first buffer pads 631 are parallel to the crossbeam 3. Two pressure pads 632 are respectively pressed onto the end faces of the two first buffer pads 631 away from the front suspension support 61. The sleeve 633 vertically penetrates the two first buffer pads 631 and is connected to the two pressure pads 632 as a whole. The sleeve 633 is hollow inside. The first fastener can be a first bolt 634 with strong load-bearing capacity and easy disassembly and assembly. The first bolt 634 passes through the inside of the sleeve 633 and is fastened to the front suspension support 61 by the first nut 635, so that the front suspension support 61 and the front suspension bracket 62 are connected by the two first buffer pads 631 and the vibration transmission between them is isolated. The sleeves 633 are distributed along the longitudinal direction. The length of the sleeves 633 is used to adjust the longitudinal compression of the first buffer pads 631, thereby adjusting the stiffness value of the first buffer pads 631, so as to ensure that the front suspension buffer pad assembly 63 effectively plays the role of longitudinal vibration reduction.
[0046] Optionally, a washer 636 may be provided between the first nut 635 and the front suspension bracket 62 to increase the contact area, reduce pressure, and prevent loosening.
[0047] Furthermore, the compression of the first buffer pad 631 closer to the front suspension bracket 62 is greater than that of the first buffer pad 631 farther from the front suspension bracket 62. Specifically, the rear first buffer pad 631 is placed on the rear side of the rear end of the front suspension bracket 62, and it bears a larger impact load from the generator 1. Its compression can be set to 6mm-9mm. The front first buffer pad 631 is placed on the front side of the rear end of the front suspension bracket 62, and it mainly bears the impact load transmitted by the rear first buffer pad 631. The compression of the front first buffer pad 631 is 1mm-3mm smaller than that of the rear first buffer pad 631. By reasonably setting the compression of the two first buffer pads 631, the vibration damping effect of the front suspension buffer pad assembly 63 can be improved.
[0048] Considering the installation method of the two first buffer pads 631 and the front suspension support 61, based on the above embodiment, the rear end of the front suspension support 61 is provided with a through hole, and the two first buffer pads 631 are provided with a boss at one end near the front suspension support 61. The two bosses are respectively inserted into the two ends of the through hole so that the two first buffer pads 631 are firmly installed on the front suspension support 61 and the first buffer pads 631 are prevented from falling off.
[0049] Optionally, the center lines of the front suspension buffer assembly 63, the front suspension bracket 61, and the front suspension support 62 are collinear and intersect with the central axis of the powertrain to avoid load transmission deviation and to enable the front suspension buffer assembly 63 to better absorb the vibration and impact forces transmitted by the powertrain.
[0050] Since the specific structural settings of the middle left suspension 7, middle right suspension 8, rear left suspension 9, and rear right suspension 10 are the same, the following explanation will take the middle left suspension 7 as an example.
[0051] Please refer to Figure 4 Considering the specific structure of the side suspension buffer pad assembly 73, based on the above embodiment, the side suspension buffer pad assembly 73 includes a second buffer pad 731, a second fastener, a third fastener, and a first mounting plate 732 and a second mounting plate 733 that are parallel to each other. The second buffer pad 731 is inclined and pressed between the first mounting plate 732 and the second mounting plate 733. The second fastener passes through the side suspension bracket 72 and the first mounting plate 732 to connect the second buffer pad 731. The third fastener passes through the side suspension support 71 and the second mounting plate 733 to connect the second buffer pad 731.
[0052] Specifically, the first mounting plate 732 and the second mounting plate 733 are parallel to each other but not on the same horizontal plane, with the first mounting plate 732 positioned above the second mounting plate 733. The second buffer pad 731 is inclined between the first mounting plate 732 and the second mounting plate 733, with an inclination angle between 10° and 15°. One end of the second fastener is fixed to the side suspension bracket 72, and the other end passes through the first mounting plate 732, connecting to the top of the second buffer pad 731. One end of the third fastener is fixed to the side suspension support 71, and the other end passes through the second mounting plate 733, connecting to the bottom of the second buffer pad 731. This allows the second buffer pad 731 to be installed inclined and securely between the side plate of the frame and the side of the powertrain, ensuring the installation stability of the side suspension buffer pad assembly 73 structure and thus achieving vibration damping in six spatial directions. Furthermore, vibration damping is achieved by squeezing the two mounting plates to avoid direct squeezing of the second buffer pad 731 and causing damage, thereby increasing the service life of the second buffer pad 731.
[0053] Further, please refer to Figure 4 and Figure 5At least two second fasteners are connected between the side suspension bracket 72 and the second buffer pad 731. The second fasteners are selected as second bolts 734 with high load-bearing capacity and easy disassembly and assembly. One end of the second bolt 734 is fastened to the side suspension bracket 72 by a second nut 735, and the other end passes through the first mounting plate 732 and is vulcanized to the second buffer pad 731. Vulcanization connection means that the second bolt 734 and the second buffer pad 731 are bonded by a chemical reaction between the vulcanizing agent and the adhesive to form a cross-linked structure. In this way, the second buffer pad 731 is firmly connected to the side suspension bracket 72.
[0054] Please refer to Figure 4 and Figure 6 The third fastener includes a screw hole block 736, a third bolt 737, and a third nut 738. The screw hole block 736 passes through the second mounting plate 733 and connects to the second buffer pad 731. One end of the third bolt 737 is fastened to the side suspension support 71 by the third nut 738, and the other end passes through the screw hole block 736 and is vulcanized to the second buffer pad 731. In this way, the screw hole block 736 is connected between the second mounting plate 733 and the second buffer pad 731, and the third bolt 737 passes through the screw hole block 736 and is threaded to it to ensure a tight connection with the second mounting plate 733 and prevent the third bolt 737 from loosening, thereby achieving a tight connection between the side suspension support 71 and the second buffer pad 731.
[0055] To achieve precise positioning and installation of the side suspension buffer pad assembly 73, based on the above embodiment, the side suspension support 71 is provided with several positioning holes, and the second mounting plate 733 is provided with positioning blocks 739. The positioning blocks 739 are adapted to and snapped into the positioning holes. When installing the side suspension buffer pad assembly 73, after the second mounting plate 733 is positioned and installed on the side suspension support 71, it is convenient for the subsequent positioning and installation of the first mounting plate 732 and the second buffer pad 731, and further restricts the movement of the second mounting plate 733 to prevent the second mounting plate 733 from falling off.
[0056] Optionally, both the first mounting plate 732 and the second mounting plate are U-shaped, and the width of the first mounting plate 732 is greater than the width of the second mounting plate 733. The openings of the first mounting plate 732 and the second mounting plate 733 are arranged facing each other, and the two ends of the second mounting plate 733 extend into the second mounting plate 733 for limiting, so that there is a distance between the first mounting plate 732 and the second mounting plate 733 for adjusting the position of the second buffer pad 731 left and right, and the two can limit each other to prevent either one from falling off.
[0057] In addition to the powertrain mounting system described above, the present invention also provides a hybrid forklift including the powertrain mounting system disclosed in the above embodiments. The structure of other parts of the hybrid forklift is described in the prior art and will not be repeated here.
[0058] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.
[0059] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.
[0060] The present invention provides a detailed description of a hybrid forklift and its powertrain mounting system. Specific examples have been used to illustrate the principles and implementation methods of the invention. The descriptions of these embodiments are merely illustrative of the method and core ideas of the invention. It should be noted that those skilled in the art can make various improvements and modifications to the invention without departing from its principles, and these improvements and modifications also fall within the scope of protection of the claims.
Claims
1. A powertrain mounting system, characterized in that, include: The powertrain includes an integrated engine (2) and a generator (1), the generator (1) being located in front of the engine (2); The front suspension (6) includes a front suspension buffer pad assembly (63), a front suspension bracket (61), and a front suspension support (62). The front suspension bracket (61) is used to connect the crossbeam (3) of the vehicle frame. The front suspension support (62) is connected to the front side of the generator (1). The front suspension bracket (61) and the front suspension support (62) are connected through the front suspension buffer pad assembly (63), and the front suspension buffer pad assembly (63) is perpendicular to the crossbeam (3). The side suspension includes a side suspension buffer pad assembly (73), side suspension supports (71) located on different horizontal planes, and side suspension brackets (72). The side suspension supports (71) are used to connect the side plates of the vehicle frame, and the side suspension brackets (72) are connected to the side of the powertrain. The side suspension supports (71) and the side suspension brackets (72) are connected through the side suspension buffer pad assembly (73), and the side suspension buffer pad assembly (73) is set at a certain angle. The side suspensions are provided in four parts: a middle left suspension (7) located between the left side of the generator (1) and the left side plate (4) of the frame; a middle right suspension (8) located between the right side of the generator (1) and the right side plate (5) of the frame; a rear left suspension (9) located between the left side of the engine (2) and the left side plate (4) of the frame; and a rear right suspension (10) located between the right side of the engine (2) and the right side plate (5) of the frame. The front suspension buffer pad assembly (63) includes two first buffer pads (631), two pressure pads (632), a sleeve (633) and a first fastener. The two first buffer pads (631) are symmetrically arranged on both sides of the rear end of the front suspension support (61) and pressed between the two pressure pads (632). The sleeve (633) passes vertically through the two first buffer pads (631) and connects between the two pressure pads (632). The first fastener passes through the inside of the sleeve (633) and connects to the front suspension bracket (62). The center lines of the front suspension buffer assembly (63), the front suspension bracket (61) and the front suspension support (62) are collinear and intersect with the center axis of the powertrain; The side suspension buffer pad assembly (73) includes a second buffer pad (731), a second fastener, a third fastener, and a first mounting plate (732) and a second mounting plate (733) that are parallel to each other. The second buffer pad (731) is inclined and pressed between the first mounting plate (732) and the second mounting plate (733). The second fastener passes through the side suspension bracket (72) and the first mounting plate (732) to connect the second buffer pad (731). The third fastener passes through the side suspension support (71) and the second mounting plate (733) to connect the second buffer pad (731).
2. The powertrain mounting system according to claim 1, characterized in that, The compression of the first buffer pad (631) closer to the front suspension bracket (62) is greater than the compression of the first buffer pad (631) farther away from the front suspension bracket (62).
3. The powertrain mounting system according to claim 1, characterized in that, The rear end of the front suspension support (61) is provided with a through hole, and the two first buffer pads (631) are provided with a boss at one end near the front suspension support (61), and the two bosses are respectively inserted into the two ends of the through hole.
4. The powertrain mounting system according to claim 1, characterized in that, The second fastener is provided as at least two, and the second fastener includes a second bolt (734) and a second nut (735). One end of the second bolt (734) is fastened to the side suspension bracket (72) by the second nut (735), and the other end passes through the first mounting plate (732) and is vulcanized to the second buffer pad (731).
5. The powertrain mounting system according to claim 4, characterized in that, The third fastener includes a screw hole block (736), a third bolt (737), and a third nut (738). The screw hole block (736) passes through the second mounting plate (733) and connects to the second buffer pad (731). One end of the third bolt (737) is fastened to the side suspension support (71) through the third nut (738), and the other end passes through the screw hole block (736) and is vulcanized to the second buffer pad (731).
6. The powertrain mounting system according to claim 5, characterized in that, The side suspension support (71) is provided with a plurality of positioning holes, and the second mounting plate (733) is provided with a positioning block (739), which is adapted to and engaged with the positioning holes.
7. A hybrid forklift, characterized in that, Includes the powertrain mounting system as described in any one of claims 1 to 6.