Pure electric mine truck chassis and vehicle

Abstract

The invention relates to the technical field of pure electric mine truck chassis, in particular to a pure electric mine truck chassis and a vehicle, which comprises a frame longitudinal beam, power battery brackets are symmetrically arranged on the left side and the right side of the frame longitudinal beam, and a plurality of bracket cross beams are connected between the power battery brackets; and a power battery integration box is mounted on the power battery bracket. The gravity center of the mine truck chassis can be lowered, and vehicle safety is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of pure electric mining truck chassis, and in particular to a pure electric mining truck chassis and a vehicle. Background Art

[0002] In the prior art, pure electric mining trucks, as an important type of mining transportation equipment, have a large total weight and need to work continuously for a long time, and the working environment is usually extremely complex and harsh. As the only power source for pure electric mining trucks, the layout of the power battery on the chassis has a significant impact on the performance of the entire vehicle. At present, most power batteries are placed on the right platform of the vehicle or on the longitudinal beam of the chassis. This layout will cause the center of gravity of the pure electric mining truck to increase, thereby reducing the safety of the vehicle. In addition, due to the harsh working environment of pure electric mining trucks, large up and down vibrations and left and right tremors will occur during the operation of the vehicle, which puts higher requirements on the safety and reliability of the power battery.

[0003] A common arrangement in the prior art is to place the heavy and large power battery box on the frame crossbeam or the right platform. Although this method can simplify the installation process, it significantly increases the center of gravity height of the vehicle, resulting in poor vehicle stability and reduced driving safety. Summary of the invention

[0004] The purpose of the present invention is to provide a pure electric mining truck chassis, which can lower the center of gravity of the mining truck chassis and improve the safety of the vehicle.

[0005] Another object of the present invention is to provide a vehicle that can lower the center of gravity of the mining truck chassis and improve the safety of the vehicle.

[0006] The technical solution of the present invention is achieved in this way:

[0007] A pure electric mining truck chassis comprises a frame longitudinal beam, power battery brackets are symmetrically arranged on the left and right sides of the frame longitudinal beam, and a plurality of bracket cross beams are connected between the power battery brackets, and the power battery brackets are used to install a power battery integrated box.

[0008] Furthermore, the upper part of the power battery bracket is fixedly connected to the frame longitudinal beam by bolts or rivets, and the lower part of the power battery bracket is connected to a plurality of bracket cross beams;

[0009] The frame longitudinal beam comprises two symmetrically arranged main longitudinal beams, and the two main longitudinal beams are connected and fixed by a cross beam assembly.

[0010] Furthermore, a sub-frame is provided on the top of the frame longitudinal beam;

[0011] The crossbeam assembly includes a three-crossbeam structure and a connecting crossbeam. The three-crossbeam structure is arranged on the subframe, and the connecting crossbeam is correspondingly arranged above the bracket crossbeam.

[0012] Furthermore, the three-crossbeam structure is connected and fixed to the subframe by bolts or rivets.

[0013] Furthermore, the connecting crossbeam and the bracket crossbeam are both axisymmetric structures, the connecting crossbeam is arched, the bracket crossbeam is inverted arched or U-shaped, and the connecting crossbeam, the bracket crossbeam and the frame longitudinal beam together form a closed loop.

[0014] Further, the crossbeam assembly also includes a hydro-pneumatic suspension crossbeam and a cab crossbeam;

[0015] The oil-gas suspension cross beam is arranged at the bottom of the front end of the frame longitudinal beam, and the two ends of the oil-gas suspension cross beam are respectively connected and fixed to the main longitudinal beam;

[0016] The cab cross beam is arranged at the top of the front end of the frame longitudinal beam and is located above the oil-gas suspension cross beam, and both ends of the cab cross beam are respectively connected and fixed to the main longitudinal beam.

[0017] Furthermore, the crossbeam assembly also includes a connecting plate, which is arranged on the outer side of the main longitudinal beam, and the two ends of the oil-gas suspension crossbeam are respectively connected and fixed to the main longitudinal beam through the connecting plate, and the two ends of the cab crossbeam are respectively connected and fixed to the main longitudinal beam through the connecting plate.

[0018] Furthermore, shock absorbing devices are respectively installed on the main longitudinal beam and the power battery bracket.

[0019] Furthermore, both sides of the power battery bracket are respectively connected and fixed to the main longitudinal beam by riding bolts.

[0020] A vehicle comprises the pure electric mining truck chassis.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The present application arranges the power battery bracket symmetrically on the left and right sides of the frame longitudinal beam, and the power battery integrated box (or power battery box) can be installed on the power battery bracket. Compared with the design scheme in the prior art that places the power battery box on the frame cross beam or above the right platform, this not only lowers the center of gravity of the mining truck chassis and improves the vehicle safety, but also the symmetrically arranged power battery integrated box ensures the balanced weight on the left and right sides of the chassis, thereby improving the vehicle safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 This is a schematic diagram of the structure of the pure electric mining truck chassis of the present invention;

[0025] Figure 2 It is a left view of the pure electric mining truck chassis of the present invention.

[0026] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0027] 1- frame longitudinal beam; 2- subframe; 3- riding bolt; 4- bracket connecting plate; 5- power battery bracket; 6- wire rope shock absorber; 7- three-beam structure; 8- bracket crossbeam; 9- connecting crossbeam; 10- oil-gas suspension crossbeam; 11- connecting plate; 12- cab crossbeam. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0031] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0032] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0033] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0035] Example 1

[0036] The present embodiment provides a pure electric mining truck chassis (pure electric mining truck: pure electric mining truck), including a frame longitudinal beam 1, and power battery brackets 5 are symmetrically arranged on the left and right sides of the frame longitudinal beam 1, and a plurality of bracket cross beams 8 are connected between the power battery brackets 5, and the power battery brackets 5 are used to install a power battery integrated box.

[0037] By arranging the power battery bracket 5 symmetrically on the left and right sides of the frame longitudinal beam 1, and a power battery integrated box (or power battery box) can be installed on the power battery bracket 5, compared with the design scheme of placing the power battery box on the frame cross beam or above the right platform in the prior art, not only the center of gravity of the mining truck chassis is lowered and the vehicle safety is improved, but the symmetrically arranged power battery integrated box also ensures the balanced weight on the left and right sides of the chassis, thereby improving vehicle safety.

[0038] Example 2

[0039] A common layout method in the prior art is to place the heavy and large power battery box on the frame crossbeam or above the right platform. Although this method can simplify the installation process, it significantly increases the height of the vehicle's center of gravity, resulting in poor vehicle stability and reduced driving safety; another layout method is to directly connect the power battery to the battery bracket with bolts without providing a special shock absorbing device. This connection method is difficult to effectively alleviate the impact of vibration and tremor during vehicle operation, which may affect the safety and reliability of the power battery and ultimately affect the service life of the entire vehicle. Therefore, it is particularly important to design a technical solution that can both ensure the safety and reliability of the power battery and optimize the chassis layout of pure electric mining trucks.

[0040] In view of the above two problems, this embodiment provides a pure electric mining truck chassis (refer to Figure 1 and Figure 2 ), including a frame longitudinal beam 1, a power battery bracket 5 is symmetrically arranged on the left and right sides of the frame longitudinal beam 1, and a plurality of bracket cross beams 8 are connected between the power battery brackets 5, and the power battery bracket 5 is used to install a power battery integrated box.

[0041] The upper part of the power battery bracket 5 is fixedly connected to the frame longitudinal beam 1 by bolts or rivets, and a plurality of bracket cross beams 8 are connected between the lower parts of the power battery bracket 5;

[0042] The frame longitudinal beam 1 includes two symmetrically arranged main longitudinal beams, and the two main longitudinal beams are connected and fixed by a cross beam assembly.

[0043] A subframe 2 is also provided on the top of the frame longitudinal beam 1;

[0044] The crossbeam assembly includes a three-crossbeam structure 7 and a connecting crossbeam 9 . The three-crossbeam structure 7 is arranged on the subframe 2 , and the connecting crossbeam 9 is correspondingly arranged above the bracket crossbeam 8 .

[0045] It should be noted here that the subframe 2 is an important part of the mining truck chassis. It is located under the frame and plays the role of supporting and connecting various systems. In the design of pure electric mining trucks, the position and structure of the subframe 2 have a direct impact on the stability and carrying capacity of the entire vehicle.

[0046] Functions and effects of subframe 2:

[0047] 1. Support and fixation:

[0048] The subframe 2 is mainly used to support and fix the drive system (such as the motor), the suspension system and other key components to ensure that these components remain stable during driving.

[0049] 2. Improve the carrying capacity:

[0050] The subframe 2 can disperse the load from the vehicle body and the ground, thereby improving the overall carrying capacity of the vehicle, especially in a complex mining environment.

[0051] 3. Shock absorption and cushioning:

[0052] The subframe 2 can absorb road impact and vibration by connecting the suspension system, reduce the vibration transmitted to the upper part of the vehicle body, and improve ride comfort and safety.

[0053] A three-beam structure 7 is arranged on the subframe 2. The three beams mainly include a front beam, a middle beam and a rear beam, which play an important role in connection and support in the frame. Among them, the front beam: located behind the front bumper, its main function is to evenly distribute the energy to the energy-absorbing bracket in the event of a collision, and to protect components such as the fender, radiator, engine hood and lamps. The design of the front beam enables it to effectively absorb and disperse the collision energy in a low-speed rear-end collision accident. The middle beam: located in the middle part of the frame, its main function is to connect and strengthen the middle area of ​​the frame, and provide additional stability and strength. The existence of the middle beam enables the frame to maintain stable performance under various working conditions. The rear beam: located at the rear of the frame, its main function is to absorb and disperse the collision energy in a rear-end collision accident, and to protect the components at the rear of the vehicle such as the tailgate and rear light group.

[0054] The sub-frame 2 adopts an assembly structure composed of three cross beams, and the three cross beams are fixed to the sub-frame 2 by bolts or rivets. This design increases the rigidity and stability of the sub-frame 2, enabling it to better withstand various loads. And because the drive motor is directly below the three cross beams, when the three cross beam structure 7 is fixed to the sub-frame 2 by bolts, it is convenient to install and repair the drive motor. This method simplifies the maintenance process and improves efficiency.

[0055] The connecting crossbeam 9 and the bracket crossbeam 8 are both axially symmetrical structures, so that their center of gravity is centered to maintain the balance of the frame. The connecting crossbeam 9 is arched, and the bracket crossbeam 8 is inverted arched or U-shaped. The connecting crossbeam 9, the bracket crossbeam 8 and the frame longitudinal beam 1 together form a closed loop, which improves the strength of the chassis structure and enhances the torsion resistance of the power battery bracket 5 and the frame assembly.

[0056] The crossbeam assembly also includes a hydro-pneumatic suspension crossbeam 10 and a cab crossbeam 12;

[0057] The oil-gas suspension crossbeam 10 is arranged at the bottom of the front end of the frame longitudinal beam 1, and the two ends of the oil-gas suspension crossbeam 10 are respectively connected and fixed to the main longitudinal beam; the oil-gas suspension crossbeam 10 corresponds to the oil-gas suspension arrangement and is used to support the oil-gas suspension. The oil-gas suspension is a suspension system that combines a gas spring and an oil shock absorber. This oil-gas suspension system combines the advantages of light weight and high elasticity of the gas spring with the buffering and vibration reduction effects of the hydraulic shock absorber, providing excellent vibration reduction and load-bearing capacity.

[0058] The oil-gas suspension cross beam 10 has at least the following functions:

[0059] 1. Structural support

[0060] The hydro-pneumatic suspension crossbeam 10 is a part of the hydro-pneumatic suspension system, which is installed on the frame longitudinal beam 1 and plays the role of connecting and supporting the hydro-pneumatic spring and other components. The hydro-pneumatic suspension crossbeam 10 is directly fixed on the frame to ensure the stable installation and reliable connection of the hydro-pneumatic spring and shock absorber.

[0061] 2. Enhance overall rigidity

[0062] The design of the oil-gas suspension cross beam 10 can significantly enhance the overall rigidity of the vehicle chassis. By adding the oil-gas suspension cross beam 10, the entire suspension system can better resist torsion and bending stress, and improve the stability and load-bearing capacity of the vehicle under complex road conditions.

[0063] 3. Distribute the load

[0064] The oil-gas suspension crossbeam 10 evenly distributes the load to different parts of the frame to avoid local stress concentration, which can reduce fatigue damage to the suspension system and the frame and extend the service life of the vehicle.

[0065] 4. Improve vibration reduction effect

[0066] The hydro-pneumatic suspension crossbeam 10 improves the vibration reduction effect of the hydro-pneumatic spring and the shock absorber by optimizing the design of the suspension system. The rigidity of the hydro-pneumatic suspension crossbeam 10 can assist the shock absorber to better absorb and attenuate vibration, thereby improving ride comfort and vehicle stability.

[0067] 5.Support oil and gas springs and shock absorbers

[0068] The hydro-pneumatic suspension crossbeam 10 directly supports the hydro-pneumatic spring and shock absorber, ensuring that these key components can function normally.

[0069] The cab cross beam 12 is arranged at the top of the front end of the frame longitudinal beam 1 and is located above the oil-gas suspension cross beam 10, and both ends of the cab cross beam 12 are respectively connected and fixed to the main longitudinal beam.

[0070] The crossbeam assembly also includes a connecting plate 11, which is arranged on the outer side of the main longitudinal beam. Both ends of the oil-gas suspension crossbeam 10 are respectively connected and fixed to the main longitudinal beam through the connecting plates 11, and both ends of the cab crossbeam 12 are respectively connected and fixed to the main longitudinal beam through the connecting plates 11.

[0071] The functions of the cab cross beam 12 are at least:

[0072] 1. Structural support

[0073] The cab cross beam 12 is fixed to the frame longitudinal beam 1 to provide structural support for the cab. This support ensures that the cab maintains rigidity and stability under various working conditions and prevents deformation caused by load or external impact.

[0074] 2. Safety protection

[0075] The cab cross beam 12 plays an important role in safety protection in collision accidents, especially in frontal collision and rollover accidents. The specific functions include:

[0076] Frontal collision: The cab cross beam 12 is usually designed to be a strong structure, which can absorb and disperse the impact energy in the event of a frontal collision and protect the safety of the cab and passengers.

[0077] Rollover accident: In a rollover accident, the cab cross beam 12 can provide additional rigid support to prevent the cab from collapsing and protect the occupants from injury.

[0078] 3. Enhance frame rigidity and stability

[0079] The cab cross beam 12 improves the overall rigidity and stability of the frame by strengthening the connection between the cab and the frame, which helps to improve the driving stability and load-bearing capacity of the vehicle under complex road conditions.

[0080] 4. Optimize space layout

[0081] The design of the cab crossbeam 12 usually takes into account the reasonable layout of the space in the cab. The position and shape of the crossbeam are optimized to ensure that the space in the cab is reasonably arranged so that the driver has enough operating space and vision.

[0082] 5. Improve the rigidity of the cab

[0083] The cab cross beam 12 not only enhances the overall rigidity of the vehicle frame, but also directly enhances the rigidity of the cab itself, which helps to reduce the vibration and deformation of the cab under various working conditions and improves riding comfort and safety.

[0084] A closed loop connection is formed between the oil-gas suspension cross beam 10, the connecting plate 11 and the cab cross beam 12, thereby improving the torsional resistance of the oil-gas suspension and the frame assembly.

[0085] The power battery bracket 5 has riding bolts 3 on both sides and is connected and fixed to the frame longitudinal beam 1 through the riding bolts 3, which reduces the shear stress of the chassis under braking conditions and ensures the stability of the power battery bracket 5. The bracket connecting plate 4 is connected to the frame longitudinal beam 1 and the subframe 2 in turn, which strengthens the overall stability of the chassis and the power battery bracket 5.

[0086] Shock absorbing devices are installed on the main longitudinal beam and the power battery bracket 5, respectively, and the shock absorbing devices use wire rope shock absorbers. The power battery bracket 5 is installed with multiple wire rope shock absorbers, which improves the safety and reliability of the power battery.

[0087] Example 3

[0088] This embodiment provides a vehicle, including the pure electric mining truck chassis.

[0089] The beneficial effects of the technical solution of the present invention are:

[0090] 1. The power battery integrated box is symmetrically arranged on both sides of the frame, which lowers the center of gravity of the mining truck chassis, improves vehicle safety, and ensures balanced weight on the left and right sides of the chassis;

[0091] 2. Multiple bracket crossbeams 8 are installed between the power battery brackets 5 on both sides to enhance the rigidity of the power battery brackets 5;

[0092] 3. The arched connecting crossbeam 9 and the bracket crossbeam 8 form a closed loop connection, which improves the anti-torsion ability of the power battery bracket 5 and the frame assembly;

[0093] 4. The power battery bracket 5 is equipped with a shock absorbing device to improve the safety and reliability of the power battery;

[0094] 5. The bracket connecting plate 4 is connected to the frame longitudinal beam 1 and the subframe 2 in sequence, which enhances the overall stability of the chassis and the power battery bracket 5;

[0095] 6. The oil-gas suspension crossbeam 10 and the cab crossbeam 12 form a closed loop connection, which improves the anti-torsion capacity of the oil-gas suspension and the frame assembly;

[0096] 7. The two sides of the power battery bracket 5 are fixed with riding bolts 3 respectively, which reduces the shear stress generated by the chassis under braking conditions and ensures the stability of the power battery bracket 5;

[0097] 8. The three-beam structure 7 on the sub-frame 2 is fixed to the sub-frame 2 by bolt connection. Since the drive motor is located directly below the three-beam structure, bolt connection is convenient for installing and maintaining the drive motor.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

[0099] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pure electric mining truck chassis, comprising a frame longitudinal beam (1), characterized in that: Power battery brackets (5) are symmetrically arranged on the left and right sides of the frame longitudinal beam (1), and a plurality of bracket cross beams (8) are connected between the power battery brackets (5). The power battery brackets (5) are used to install a power battery integrated box.

2. The pure electric mining truck chassis according to claim 1 is characterized in that: The upper part of the power battery bracket (5) is fixedly connected to the frame longitudinal beam (1) by bolts or rivets, and the lower part of the power battery bracket (5) is connected to a plurality of bracket cross beams (8); The frame longitudinal beam (1) comprises two symmetrically arranged main longitudinal beams, and the two main longitudinal beams are connected and fixed by a cross beam assembly.

3. The pure electric mining truck chassis according to claim 2 is characterized in that: A sub-frame (2) is arranged on the top of the frame longitudinal beam (1); The crossbeam assembly comprises a three-crossbeam structure (7) and a connecting crossbeam (9); the three-crossbeam structure (7) is arranged on the auxiliary frame (2); and the connecting crossbeam (9) is correspondingly arranged above the bracket crossbeam (8).

4. The pure electric mining truck chassis according to claim 3 is characterized in that: The three-beam structure (7) is connected and fixed to the auxiliary frame (2) by means of bolts or rivets.

5. The pure electric mining truck chassis according to claim 3 is characterized in that: The connecting crossbeam (9) and the bracket crossbeam (8) are both axisymmetric structures; the connecting crossbeam (9) is arched, the bracket crossbeam (8) is inverted arched or U-shaped; the connecting crossbeam (9), the bracket crossbeam (8) and the frame longitudinal beam (1) together form a closed loop.

6. The pure electric mining truck chassis according to claim 2, characterized in that: The crossbeam assembly also includes a hydro-pneumatic suspension crossbeam (10) and a cab crossbeam (12); The oil-gas suspension cross beam (10) is arranged at the bottom of the front end of the frame longitudinal beam (1), and the two ends of the oil-gas suspension cross beam (10) are respectively connected and fixed to the main longitudinal beam; The cab cross beam (12) is arranged at the top of the front end of the frame longitudinal beam (1) and is located above the oil-gas suspension cross beam (10), and both ends of the cab cross beam (12) are respectively connected and fixed to the main longitudinal beam.

7. The pure electric mining truck chassis according to claim 6, characterized in that: The crossbeam assembly also includes a connecting plate (11), the connecting plate (11) being arranged on the outer side of the main longitudinal beam, the two ends of the oil-gas suspension crossbeam (10) being connected and fixed to the main longitudinal beam respectively through the connecting plate (11), and the two ends of the cab crossbeam (12) being connected and fixed to the main longitudinal beam respectively through the connecting plate (11).

8. The pure electric mining truck chassis according to claim 2, characterized in that: Shock absorbing devices are respectively installed on the main longitudinal beam and the power battery bracket (5).

9. The pure electric mining truck chassis according to claim 2, characterized in that: Both sides of the power battery bracket (5) are respectively connected and fixed to the main longitudinal beam via riding bolts (3).

10. A vehicle, characterized in that: A pure electric mining truck chassis comprising any one of claims 1-9.

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