Suspension mechanism and off-highway mining dump truck

Abstract

The utility model relates to the technical field of vehicles, in particular to a suspension mechanism and an off-highway mining dump truck. A suspension mechanism is used for assembling a range extender power assembly on a vehicle frame, the range extender power assembly comprises an engine and a generator, the suspension mechanism comprises an engine front suspension support, an engine rear suspension support, a range extender rear suspension support, a range extender rear suspension support, a range extender rear suspension support, a range extender rear suspension support and a range extender rear suspension support, and the front end of the engine is assembled to the vehicle frame through the engine front suspension support; the rear end, close to the generator, of the engine is assembled to the frame through the engine rear suspension support; and a generator is assembled on the frame through the generator suspension bracket. The technical problem that in the prior art, a suspension mechanism cannot play a good role in supporting the range extender power assembly under the severe working condition, and consequently the connecting position of an engine and a generator of the range extender power assembly is broken is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a suspension mechanism and an off-road mining dump truck. Background Art

[0002] A range extender powertrain usually refers to a combination of an engine and a generator. Compared to the combination of an engine and a transmission in a traditional engine powertrain, a range extender powertrain can provide additional electrical energy, allowing electric vehicles to increase their mileage.

[0003] As the main component connecting the range extender powertrain and the vehicle frame, the range extender suspension mechanism plays an important role in limiting and supporting the transmission of vibration. The existing range extenders generally use the engine suspension or the engine front suspension and generator suspension. The former is prone to cracking at the flywheel housing suspension, and the latter is prone to cracking at the connection flange between the engine and the generator.

[0004] For example, the document with application number CN201520554192.0 discloses a suspension structure of an extended-range electric vehicle, including a generator, an engine, a front suspension and a rear suspension; the generator is connected to the engine through a flywheel housing; the front suspension includes two front suspension brackets and a crossbeam connected between the two front suspension brackets, the two front suspension brackets are respectively fixedly connected to the longitudinal beams of the electric vehicle, the crossbeam is in the shape of an arch with a convex middle part and straight ends, and the middle part of the crossbeam is fixedly connected to the engine; the rear suspension includes two rear suspension brackets arranged in a V-shape below both sides of the connection between the generator and the flywheel housing, one end of each rear suspension bracket is respectively fixedly connected to the generator and the two sides of the flywheel housing, and the other end is used to connect to the subframe of the electric vehicle.

[0005] If the above-mentioned suspension structure is applied to severe working conditions, the vehicle is prone to severe shaking, which may easily cause cracks in the connection between the engine and the generator of the range extender powertrain, while reducing the service life of the suspension mechanism. Utility Model Content

[0006] In order to solve the technical problem that the suspension mechanism in the prior art cannot provide good support for the range extender powertrain under harsh working conditions, resulting in breakage of the connection between the engine and the generator of the range extender powertrain, the utility model provides a suspension mechanism and an off-road mining dump truck to solve the above technical problem.

[0007] In order to solve the above technical problems, the utility model provides a suspension mechanism for assembling a range extender powertrain on a vehicle frame, wherein the range extender powertrain includes an engine and a generator, and the suspension mechanism includes:

[0008] An engine front suspension bracket, through which the front end of the engine is assembled to the vehicle frame;

[0009] An engine rear suspension bracket, through which the rear end of the engine close to the generator is assembled to the vehicle frame;

[0010] A generator suspension bracket, through which the generator is assembled to the vehicle frame.

[0011] According to one embodiment of the utility model, there are two engine front suspension brackets, two engine rear suspension brackets and two generator suspension brackets, and the two engine front suspension brackets, two engine rear suspension brackets and two generator suspension brackets are symmetrically arranged on both sides of the range extender powertrain to form a six-point suspension support.

[0012] According to an embodiment of the utility model, the suspension mechanism provides vibration reduction support for the range extender powertrain.

[0013] According to one embodiment of the utility model, the front suspension bracket of the engine includes a first suspension bracket and a first connecting bracket, the first suspension bracket is fixed on the vehicle frame, the first connecting bracket is fixed to the front end of the engine, and the first suspension bracket and the first connecting bracket are connected via a first vibration isolator.

[0014] According to an embodiment of the utility model, the connecting surfaces of the first suspension bracket, the first connecting bracket and the first vibration isolator are all planes, the first vibration isolator includes a sliding-fitting shell and a base, a vibration isolation module is arranged between the shell and the base, the shell is connected to the first connecting bracket through a fastener, one end of the fastener is inserted into the vibration isolation module for vertical limitation; the base is connected to the first suspension bracket.

[0015] According to one embodiment of the utility model, the engine rear suspension bracket includes a second suspension bracket and a second connecting bracket, the second suspension bracket is fixed on the vehicle frame, the second connecting bracket is fixed to the rear end of the engine, and the second suspension bracket and the second connecting bracket are connected via a second vibration isolator.

[0016] According to an embodiment of the present invention, the second connecting bracket is a C-shaped structure formed by bending a sheet metal part, and the strength is increased by a reinforcing plate.

[0017] According to one embodiment of the utility model, the generator suspension bracket includes a third suspension bracket and a third connecting bracket, the third suspension bracket is fixed on the vehicle frame, the third connecting bracket is fixed on the generator, and the third suspension bracket and the third connecting bracket are connected via a third vibration isolator.

[0018] According to an embodiment of the present invention, the structures of the second vibration isolator and the third vibration isolator are the same as that of the first vibration isolator.

[0019] The utility model also provides an off-road mining dump truck, comprising:

[0020] A range extender powertrain, comprising an engine and a generator, wherein the engine and the generator are flange-connected;

[0021] A vehicle frame, the vehicle frame having two beams arranged in parallel and spaced apart, the range extender powertrain being located between the two beams;

[0022] A suspension mechanism, wherein the range extender powertrain is assembled on the two beams through the suspension mechanism.

[0023] Based on the above technical solution, the technical effects that can be achieved by the utility model are:

[0024] 1. The suspension mechanism of the utility model can support the front end of the engine, the rear end of the engine and the generator formed by the range extender power assembly by arranging the front engine suspension bracket, the rear engine suspension bracket and the generator suspension bracket. The rear end of the engine supported by the rear engine suspension bracket is close to the connection between the engine and the generator, so that a stable support can be formed for the range extender power assembly, and the connection between the engine and the generator is not easy to break, which can adapt to harsh working conditions;

[0025] 2. The suspension mechanism of the utility model is provided with two engine front suspension brackets, two engine rear suspension brackets and two generator suspension brackets, which are arranged symmetrically to form a six-point suspension support. By arranging four-point and two-point suspensions at the engine and generator respectively, the support points of the range extender powertrain are increased, and the strength of the suspension structure is improved;

[0026] 3. The suspension mechanism of the utility model is provided with vibration isolators in the engine front suspension bracket, the engine rear suspension bracket and the engine suspension bracket, which can realize vibration reduction support for the range extender power assembly. In this way, even under harsh working conditions, the connection between the engine and the generator of the range extender power assembly will not crack; the energy transmitted to the vehicle frame during the operation of the range extender power assembly is reduced, and the operating stability of the range extender power assembly is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view of the range extender powertrain of the utility model assembled on the vehicle frame through the suspension mechanism;

[0028] Figure 2 A top view of the range extender powertrain assembled on the vehicle frame through a suspension mechanism;

[0029] Figure 3It is a partial exploded view of the range extender powertrain assembled on the vehicle frame through the suspension mechanism;

[0030] Figure 4 The schematic diagram of the range extender powertrain and suspension mechanism after the vehicle frame is omitted;

[0031] Figure 5 Figure 4 A schematic diagram of the structure shown in another viewing angle;

[0032] Figure 6 is a cross-sectional view of a first vibration isolator;

[0033] In the figure: 1-engine front suspension bracket; 11-first suspension bracket; 111-first mounting positioning hole; 12-first connecting bracket; 121-second mounting positioning hole; 13-first vibration isolator; 131-housing; 132-base; 133-vibration isolation module; 1331-third mounting positioning hole; 2-engine rear suspension bracket; 21-second suspension bracket; 22-second connecting bracket; 23-second vibration isolator; 3-generator suspension bracket; 31-third suspension bracket; 32-third connecting bracket; 33-third vibration isolator; 10-range extender powertrain; 101-engine; 102-generator; 20-frame; 201-beam. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means a limitation on the utility model and its application or use. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0035] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0036] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps set forth in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0037] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0038] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0039] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the utility model.

[0040] like Figure 1-6 As shown, this embodiment provides a suspension mechanism for assembling the range extender powertrain 10 to the vehicle frame 20. The suspension mechanism includes an engine front suspension bracket 1, an engine rear suspension bracket 2 and a generator suspension bracket 3. The engine front suspension bracket 1 and the engine rear suspension bracket 2 are used to assemble the engine 101 of the range extender powertrain 10 to the vehicle frame 20, and the generator suspension bracket 3 is used to assemble the engine 102 of the range extender powertrain 10 to the vehicle frame 20.

[0041] The engine front suspension bracket 1, the engine rear suspension bracket 2 and the generator suspension bracket 3 are each provided with two, and are symmetrically arranged on both sides of the range extender power assembly 10, that is, each side of the range extender power assembly 10 is provided with an engine front suspension bracket 1, an engine rear suspension bracket 2 and a generator suspension bracket 3, the two engine front suspension brackets 1 are used to assemble the front end of the engine 101 to the frame 20, the two engine rear suspension brackets 2 are used to assemble the rear end of the engine 101 to the frame 20, and the two generator suspension brackets 3 are used to assemble the generator 102 to the frame 20, so that a four-point suspension is arranged at the engine 101, and a two-point suspension is arranged at the generator 102, forming a six-point suspension support.

[0042] The engine front suspension bracket 1 includes a first suspension bracket 11 and a first connecting bracket 12. The first suspension bracket 11 is fixed to the frame 20, and the first connecting bracket 12 is fixed to the front end of the engine 101. The front end of the engine 101 is connected to the frame 20 through the engine front suspension bracket 1, and the first suspension bracket 11 and the second connecting bracket 12 are connected through a first vibration isolator 13.

[0043] As the preferred technical solution of this embodiment, the connecting surfaces of the first suspension bracket 11, the first connecting bracket 12 and the first vibration isolator 13 are all planes, which can evenly distribute the vertical force transmitted from the range extender power assembly 10 to the first vibration isolator 13. When subjected to lateral force, the vibration isolation module 133 in the first vibration isolator 13 can disperse the lateral force to other directions, effectively reducing the force transmitted to the frame 20 in one direction, thereby improving the working stability of the range extender power assembly 10 and the comfort of the entire vehicle.

[0044] As the preferred technical solution of this embodiment, the first suspension bracket 11 is the main load-bearing body, the first suspension bracket 11 is L-shaped, the vertical plate of the first suspension bracket 11 can be fitted with the frame 20 and fixed by fasteners; the transverse plate of the first suspension bracket 11 is connected to the first vibration isolator 13.

[0045] As the preferred technical solution of this embodiment, the first connecting bracket 12 is an integrated structure formed by welding a web and a reinforcing plate. The vertical end of the first connecting bracket 12 is tightly fixed to the engine 101, and the lateral end of the first connecting bracket 12 is connected to the first vibration isolator 13.

[0046] As a preferred technical solution of this embodiment, the first vibration isolator 13 includes a shell 131 and a base 132. The shell 131 covers the upper end of the base 132. A vibration isolation module 133 is arranged between the shell 131 and the base 132. The base 132 is located on the transverse plate of the first suspension bracket 11 and is connected by fasteners. Specifically, the transverse plate of the first suspension bracket 11 is distributed with first positioning and mounting holes 111, and the fasteners pass through the first positioning and mounting holes 111 to fix the base 132 on the first suspension bracket 11; preferably, there are 4 first positioning and mounting holes 111 to fix the four corners of the base 132. The first connecting bracket 12 is provided with a second mounting positioning hole 121, and the fasteners pass through the second mounting positioning hole 121 to fix the first connecting bracket 12 to the shell 131. Preferably, the second mounting positioning hole 121 is located in the middle position of the first connecting bracket 12, and the first connecting bracket 12 is attached to and fixed to the top surface of the shell 131. Further preferably, a third mounting positioning hole 1331 is formed in the vibration isolation module 133 , and a fastener for connecting the first connecting bracket 12 and the housing 131 is inserted into the third mounting positioning hole 1331 to limit the first vibration isolator 13 and the first connecting bracket 12 in the vertical direction.

[0047] The engine rear suspension bracket 2 includes a second suspension bracket 21 and a second connecting bracket 22. The second suspension bracket 21 is fixed to the frame 20, and the second connecting bracket 22 is fixed to the rear end of the engine 101. The rear end of the engine 101 is connected to the frame 20 through the engine rear suspension bracket 2. The second suspension bracket 21 and the second connecting bracket 22 are connected through a second vibration isolator 23.

[0048] As a preferred technical solution of this embodiment, the second suspension bracket 21 is L-shaped, the vertical plate of the second suspension bracket 21 is in contact with the frame 20 and fixed by fasteners, and the transverse plate of the second suspension bracket 21 carries the second vibration isolator 23 and is connected to the second vibration isolator 23.

[0049] As a preferred technical solution of this embodiment, the second connecting bracket 22 is a C-shaped structure formed by bending a sheet metal, and the strength is increased by a reinforcing plate to ensure strength. The second connecting bracket 22 adopts a C-shaped structure formed by bending a sheet metal, which has a certain buffering effect, and the second connecting bracket 22 is connected to the rear end of the engine 101 close to the generator 102. When in harsh working conditions, the second connecting bracket 22 can play a role in properly buffering the vibration of the connection between the engine 101 and the generator 102.

[0050] As a preferred technical solution of this embodiment, the second vibration isolator 23 has the same structure as the first vibration isolator 13, the base of the second vibration isolator 23 is fixedly connected to the second suspension bracket 21, the lower end of the second connecting bracket 22 is attached to the upper surface of the outer shell of the second vibration isolator 23 and fixed by fasteners, and the fasteners are inserted into the vibration isolation module of the second vibration isolator 23.

[0051] The generator suspension bracket 3 includes a third suspension bracket 31 and a third connecting bracket 32. The third suspension bracket 31 is fixed to the frame 20, and the third connecting bracket 32 ​​is fixed to the rear end of the generator 102. The generator 102 is connected to the frame 20 through the generator suspension bracket 3, and the third suspension bracket 31 and the third connecting bracket 32 ​​are connected through a third vibration isolator 33.

[0052] As a preferred technical solution of this embodiment, the third suspension bracket 31 is L-shaped, the vertical plate of the third suspension bracket 31 is in contact with the frame 20 and is fixed by fasteners, and the transverse plate of the third suspension bracket 31 carries the third vibration isolator 33 and is connected to the third vibration isolator 33.

[0053] As the preferred technical solution of this embodiment, the third connecting bracket 32 ​​is welded into a T-shaped structure by a connecting plate and a reinforcing plate, which increases the installation stress point of the range extender power assembly 10, reduces the relative movement of the engine 101 and the generator 102 under operating conditions, reduces the stress at the bolts on the connecting flange surface, prevents the connecting flange between the engine 101 and the generator 102 from cracking, and extends the service life of the suspension mechanism.

[0054] As a preferred technical solution of this embodiment, the third vibration isolator 33 has the same structure as the first vibration isolator 13. The base of the third vibration isolator 33 is fixedly connected to the third suspension bracket 31. The lower end of the third connecting bracket 32 ​​is attached to the upper surface of the outer shell of the third vibration isolator 33 and fixed by fasteners. The fasteners are inserted into the vibration isolation module of the third vibration isolator 33.

[0055] This embodiment further provides an off-road mining dump truck, comprising a range extender power assembly 10 and a vehicle frame 20, wherein the range extender power assembly 10 is mounted on the vehicle frame 20 via the aforementioned suspension mechanism. F indicates the vehicle head direction.

[0056] The range extender powertrain 10 comprises an engine 101 and a generator 102 , and the rear end of the engine 101 is flange-connected to the generator 102 .

[0057] The vehicle frame 20 includes two parallel and spaced beams 201, and the range extender power assembly 10 is located between the two beams 201. Preferably, the axis of the range extender power assembly 10 is parallel to the beams 201, and the two beams 201 are arranged on both sides of the range extender power assembly 10 substantially symmetrically.

[0058] Both sides of the front end of the engine 101 are respectively mounted on adjacent beams 201 through engine front suspension brackets 1; both sides of the rear end of the engine 101 are respectively mounted on adjacent beams 201 through engine rear suspension brackets 2; both sides of the generator 102 are respectively mounted on adjacent beams 201 through generator suspension brackets 3.

[0059] As a preferred technical solution of this embodiment, two engine rear suspension brackets 2 are arranged near the connection between the engine 101 and the generator 102. The generator suspension bracket 3 can be arranged at one end of the generator 102 away from the engine 101.

[0060] When the off-road mining dump truck of this embodiment is in full vehicle operation, the six vibration isolators in the suspension mechanism play a buffering role, which can delay and weaken the inertia of the range extender power assembly 10 and reduce the energy transmitted to the frame 20, thereby improving the working stability of the range extender power assembly 10 and the comfort of the whole vehicle.

[0061] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A suspension mechanism for assembling a range extender powertrain (10) on a vehicle frame (20), wherein the range extender powertrain (10) comprises an engine (101) and a generator (102), characterized in that: The suspension mechanism comprises: An engine front suspension bracket (1), the front end of the engine (101) being assembled onto the vehicle frame (20) via the engine front suspension bracket (1); An engine rear suspension bracket (2), wherein the rear end of the engine (101) close to the generator (102) is assembled to the vehicle frame (20) via the engine rear suspension bracket (2); A generator suspension bracket (3), the generator (102) is assembled onto the vehicle frame (20) via the generator suspension bracket (3).

2. A suspension mechanism according to claim 1, characterized in that: The engine front suspension bracket (1), the engine rear suspension bracket (2) and the generator suspension bracket (3) are each in two pieces, and the two engine front suspension brackets (1), the engine rear suspension bracket (2) and the generator suspension bracket (3) are symmetrically arranged on both sides of the range extender powertrain (10) to form a six-point suspension support.

3. A suspension mechanism according to any one of claims 1 to 2, characterized in that: The suspension mechanism provides vibration reduction support for the range extender power assembly (10).

4. A suspension mechanism according to claim 3, characterized in that: The engine front suspension bracket (1) comprises a first suspension bracket (11) and a first connecting bracket (12); the first suspension bracket (11) is fixed on the vehicle frame (20); the first connecting bracket (12) is fixed to the front end of the engine (101); the first suspension bracket (11) and the first connecting bracket (12) are connected via a first vibration isolator (13).

5. A suspension mechanism according to claim 4, characterized in that: The connection surfaces of the first suspension bracket (11), the first connecting bracket (12) and the first vibration isolator (13) are all planes; the first vibration isolator (13) comprises a slidingly matched outer shell (131) and a base (132); a vibration isolation module (133) is arranged between the outer shell (131) and the base (132); the outer shell (131) is connected to the first connecting bracket (12) via a fastener; one end of the fastener is inserted into the vibration isolation module (133) for vertical restriction; and the base (132) is connected to the first suspension bracket (11).

6. A suspension mechanism according to claim 4, characterized in that: The engine rear suspension bracket (2) comprises a second suspension bracket (21) and a second connecting bracket (22); the second suspension bracket (21) is fixed to the vehicle frame (20); the second connecting bracket (22) is fixed to the rear end of the engine (101); the second suspension bracket (21) and the second connecting bracket (22) are connected via a second vibration isolator (23).

7. A suspension mechanism according to claim 6, characterized in that: The second connecting bracket (22) is a C-shaped structure formed by bending a sheet metal part, and the strength is increased by a reinforcing plate.

8. A suspension mechanism according to claim 6, characterized in that: The generator suspension bracket (3) comprises a third suspension bracket (31) and a third connecting bracket (32); the third suspension bracket (31) is fixed to the vehicle frame (20); the third connecting bracket (32) is fixed to the generator (102); and the third suspension bracket (31) and the third connecting bracket (32) are connected via a third vibration isolator (33).

9. A suspension mechanism according to claim 8, characterized in that: The structures of the second vibration isolator (23) and the third vibration isolator (33) are the same as the structure of the first vibration isolator (13).

10. An off-road mining dump truck, characterized in that: include: A range extender powertrain (10) comprises an engine (101) and a generator (102), wherein the engine (101) and the generator (102) are flange-connected; A vehicle frame (20), the vehicle frame (20) having two beams (201) arranged in parallel and spaced apart, the range extender power assembly (10) being located between the two beams (201); The suspension mechanism according to any one of claims 1 to 9, wherein the range extender powertrain (10) is mounted on the two beams (201) via the suspension mechanism.

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