A compact charging vehicle chassis

Abstract

This invention belongs to the field of mobile energy storage equipment technology, specifically relating to a compact charging vehicle chassis. The invention includes a welded front axle module and a rear axle module, both fixedly connected to the vehicle frame and each equipped with four independent suspension modules. Each suspension module consists of a pad and a spring to ensure driving stability. Its core innovation lies in designing the water-cooled cabinet mounting section as a sunken structure, embedded in the center of the chassis, significantly saving upper space. Simultaneously, the control module and steering module are located at the front of the chassis for centralized control. Through the integrated axle body, sunken water-cooled layout, and optimized suspension design, this invention achieves miniaturization and lightweighting of the chassis structure, effectively reducing manufacturing costs and operating energy consumption, and improving the mobility and applicability of the mobile charging vehicle in confined spaces.

Description

Technical Field

[0001] This invention belongs to the field of charging vehicle technology, and in particular relates to a compact charging vehicle chassis. Background Technology With the rapid development of new energy technologies, mobile energy storage charging vehicles are becoming increasingly popular as important equipment for emergency power supply, outdoor operations, and temporary power replenishment.

[0002] Currently, most existing mobile energy storage vehicles adopt traditional large chassis structures. To accommodate more battery packs, they are often designed to be quite bulky, using a large amount of steel welded or bolted together. This results in increased vehicle weight, low space utilization, and high operating energy consumption. Such chassis typically carry multiple drive motors, have complex structures, are difficult to maintain, and have poor mobility in narrow or height-restricted areas.

[0003] Furthermore, existing energy storage vehicle chassis often externally mount water-cooling modules or lay them flat inside the battery compartment, further reducing battery placement space and lowering the overall vehicle's energy density and operating efficiency. Therefore, there is an urgent need for a chassis with a more compact structure, a more rational spatial layout, and a higher degree of lightweighting to improve the mobility, economy, and applicability of mobile energy storage vehicles. Summary of the Invention

[0004] To address the problems of complex structure, large size and weight, difficult maintenance, and poor space utilization in existing charging vehicle chassis, this invention proposes a compact charging vehicle chassis, comprising: a front axle module, a rear axle module, a control module, and a central recessed bottom plate; the recessed structure of the central recessed bottom plate forms a water-cooled cabinet mounting section; the water-cooled cabinet mounting section is a frame-type sunken structure, located between the front axle module and the rear axle module; the control module is located on the front axle module; Both the front axle module and the rear axle module are integral axle structures formed by welding and are fixedly connected to the vehicle frame respectively; both the front axle module and the rear axle module are provided with suspension connection points, and each suspension connection point is provided with a suspension module.

[0005] According to the above-described compact charging vehicle chassis, there are four suspension modules, two of which are located on the front axle module and the other two are located on the rear axle module; the front axle module and the rear axle module are connected to the vehicle frame through the suspension modules. The front axle module includes a steering assembly and wheel hubs. An angular strut is installed on the front axle module. One end of the angular strut is hinged to a connecting rod, and the other end of the connecting rod is connected to a swing arm bracket. The other end of the swing arm bracket is fixedly connected to the bottom of the vehicle frame.

[0006] According to the above-described compact charging vehicle chassis, the suspension module includes a pad and a spring. The pad of the suspension module is a rectangular steel plate, and the spring is a helical compression spring. The pad is welded and fixed to the front axle module and the rear axle module. The upper end of the spring is connected to the vehicle frame, and the lower end is fixedly connected to the pad to form an elastic support structure.

[0007] According to the above-described compact charging vehicle chassis, the water-cooled cabinet mounting part is a rectangular groove structure with multiple mounting holes at the bottom for fixing the water-cooled cabinet. The groove depth is greater than the height of the water-cooled cabinet, so that the upper surface of the water-cooled cabinet is not higher than the upper plane of the chassis after it is embedded.

[0008] According to the above-described compact charging vehicle chassis, the steering assembly and wheel hub are mounted on the axle body of the front axle module; the steering assembly includes: a steering motor, a connecting arm, and a transmission rod; the steering motor is connected to the transmission rod; the transmission rod is hinged to the connecting arm; the connecting arm is hinged to the wheel hub; the transmission rod reciprocates linearly along the axial direction of the transmission rod under the forward and reverse rotation of the steering motor; the transmission rod drives the connecting arm to swing left and right; thereby causing the wheel hub hinged on the connecting arm to turn left and right.

[0009] According to the above-described compact charging vehicle chassis, the rear axle module is symmetrically arranged with the front axle module and is welded to form an integral axle body.

[0010] According to the above-described compact charging vehicle chassis, the control module is located at the rear of the chassis and is connected to the front axle module and the rear axle module respectively.

[0011] According to the above-described compact charging vehicle chassis, a drive motor is installed on the rear axle module; the drive motor is connected to a control module; the control module controls the drive motor to move the charging vehicle back and forth.

[0012] According to the above-described compact charging vehicle chassis, the top of the spring is provided with a mounting seat, which is bolted to the bottom of the frame to fix the suspension module to the frame.

[0013] According to the above-described compact charging vehicle chassis, the chassis is made entirely of high-strength lightweight steel and the surface is treated with rust prevention.

[0014] The beneficial effects of this invention are as follows: 1. High space utilization and compact structure. This invention adopts a welded integral structure for the front and rear axle modules, reducing the space occupied by connecting parts. Simultaneously, the water-cooled cabinet is recessed and positioned between the front and rear axle modules, significantly reducing the overall vehicle height and volume. Compared with existing technologies, with the same battery capacity, the chassis space occupied is reduced, making it more suitable for operation in narrow or height-restricted environments, thus expanding the applicable scenarios for mobile charging vehicles.

[0015] 2. Lightweight design reduces energy consumption. The chassis is welded from high-strength lightweight steel, reducing the overall weight by more than 15% compared to traditional bolted connection structures. This weight reduction directly lowers energy consumption during operation, extends battery range, and improves the vehicle's economy and environmental friendliness.

[0016] 3. Optimized suspension modules for a smoother ride. Each wheel is independently equipped with a suspension module consisting of a pad and a spring, effectively absorbing road vibrations and improving ride stability and comfort. This design is particularly suitable for uneven road surfaces, reducing component loosening or damage caused by vibrations and improving chassis reliability and lifespan.

[0017] 4. Excellent heat dissipation and stable operation. The recessed arrangement of the water-cooled cabinet not only saves space but also enhances heat dissipation by utilizing airflow under the chassis. The control module is located at the front of the water-cooled cabinet mounting section, with a heat dissipation gap between the axle and the frame to prevent overheating of the control module. Overall heat dissipation efficiency is improved, ensuring stable operation in high-temperature environments.

[0018] 5. Modular design for easy maintenance. The front and rear axle modules, control modules, and other components adopt a modular layout, mounted on the frame via bolts, facilitating disassembly and replacement. This reduces maintenance time and costs, improving equipment availability and operational efficiency. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of a compact charging vehicle chassis according to the present invention.

[0020] Figure 2 This is a structural schematic diagram of the front axle module and suspension module of a compact charging vehicle chassis according to the present invention.

[0021] Figure 3 This is a structural schematic diagram of the rear axle module and suspension module of a compact charging vehicle chassis according to the present invention.

[0022] Figure 4 This is a schematic diagram of a steering assembly of a compact charging vehicle chassis according to the present invention, which drives the wheel hub to go straight, turn left and turn right.

[0023] Figure 5 This is a schematic diagram of the internal structure of the steering assembly of a compact charging vehicle chassis according to the present invention.

[0024] In the diagram: 1-Front axle module, 2-Rear axle module, 3-Control module, 5-Water-cooled cabinet mounting section, 6-Suspension module, 7-Mounting seat, 8-Angle rod, 9-Swing arm bracket, 10-Link rod, 11-Steering assembly, 13-Wheel hub, 51-Mounting hole, 52-Insulation layer, 61-Pad, 62-Spring, 100-Frame, 111-Steering motor, 112-Drive rod, 113-Connecting arm, 114-Intermediate shaft, 115-Worm gear, 116-Worm. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0026] like Figures 1 to 4 As shown, a compact charging vehicle chassis according to this embodiment includes a front axle module 1, a rear axle module 2, a control module 3, and a central recessed base plate. A water-cooled cabinet mounting part 5 is located in the center of the central recessed base plate. This mounting part 5 is a welded, frame-type sunken structure located between the front axle module 1 and the rear axle module 2. The water-cooled cabinet mounting part 5 is a rectangular groove with multiple mounting holes 51 evenly arranged at its bottom for fixing the water-cooled cabinet with bolts. The depth of the groove is slightly greater than the height of the water-cooled cabinet, ensuring that the upper surface of the water-cooled cabinet, after being embedded and installed, does not exceed the upper plane of the chassis, which contributes to the flatness and compactness of the overall vehicle structure.

[0027] The control module 3 is located above and behind the front axle module 1, and is connected to the front axle module 1 and the rear axle module 2 respectively via wiring harnesses to realize centralized control of the chassis's walking and steering functions.

[0028] Both the front axle module 1 and the rear axle module 2 are integral axle structures welded from high-strength lightweight steel. Their structures are similar and symmetrically arranged, and they are fixedly connected to the frame 100 by bolts. The front axle module 1 integrates a steering assembly 11 and a wheel hub 13. The steering assembly 11 includes a steering motor 111, a transmission rod 112, and a connecting arm 113. The output shaft of the steering motor 111 is connected to a worm gear 116, which meshes with a worm wheel 115. The worm wheel 115 is mounted on an intermediate shaft 114, and a gear structure is located at the lower end of the intermediate shaft 114. A rack structure meshes with the gear structure on the transmission rod 112. The output shaft of the steering motor 111 drives the worm gear 116 to rotate, and the meshing of the worm gear 116 with the worm wheel 115 drives the intermediate shaft 114 to rotate. This, in turn, drives the transmission rod 112 to move left and right through the gear structure at the lower end of the intermediate shaft 114 and the rack structure of the transmission rod 112. The transmission rod 112 is hinged to the connecting arm 113, thereby causing the connecting arm 113 to swing left and right; the other end of the connecting arm 113 is hinged to the wheel hub 13, ultimately realizing the steering function of the wheel hub 13.

[0029] In addition, a directional strut 8 is installed at the front of the front axle module 1. One end of the directional strut 8 is connected to a connecting rod 10 via a hinge, and the other end of the connecting rod 10 is connected to a swing arm bracket 9. The end of the swing arm bracket 9 is fixed to the bottom of the frame 100 by bolts, which serves to assist in positioning and force transmission.

[0030] The structure of the rear axle module 2 is basically symmetrical to that of the front axle module 1, and a drive motor 41 is installed on its axle body. The drive motor 41 is connected to the control module 3 through a wiring harness, receives control commands and outputs power to drive the charging vehicle to move forward and backward.

[0031] Each of the front axle module 1 and the rear axle module 2 has two suspension connection points, for a total of four suspension modules 6. Each suspension module 6 includes a rectangular pad 61 and a coil compression spring 62. The pad 61 is made of steel plate and is welded and fixed to the corresponding position of the front axle module 1 or the rear axle module 2. The lower end of the spring 62 is connected to the pad 61 by welding or clips, while the upper end has a mounting base 7. This mounting base 7 is connected to the bottom of the frame 100 by high-strength bolts, together forming a complete elastic suspension support system that provides cushioning and shock absorption.

[0032] The entire chassis is constructed from high-strength, lightweight steel, with robust and reliable welded joints. All exposed metal surfaces have undergone sandblasting and rust-preventive paint treatment, significantly improving the chassis's structural strength, corrosion resistance, and service life. This invention achieves a high degree of integration and space compression in the chassis structure through integrated welding of the front axle module 1 and rear axle module 2, a sunken water-cooling arrangement, and optimized suspension modules. It is suitable for various mobile energy storage and charging scenarios and has significant practical application value.

[0033] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A compact charging trolley chassis characterised in that, include: The front axle module (1), the rear axle module (2), the control module (3) and the middle recessed bottom plate; the recessed structure of the middle recessed bottom plate forms the water-cooled cabinet mounting part (5); the water-cooled cabinet mounting part (5) is a frame-type sunken structure, which is set between the front axle module (1) and the rear axle module (2); the control module (3) is set on the front axle module (1); The front axle module (1) and the rear axle module (2) are both integral axle structures formed by welding and are fixedly connected to the frame (100) respectively; the front axle module (1) and the rear axle module (2) are both provided with suspension connection points, and each suspension connection point is provided with a suspension module (6).

2. A compact charging trolley chassis according to claim 1, characterised in that, There are 4 suspension modules (6), 2 of which are installed on the front axle module (1) and the other 2 are installed on the rear axle module (2); the front axle module (1) and the rear axle module (2) are connected to the frame (100) through the suspension modules (6); The front axle module (1) includes a steering assembly (11) and a wheel hub (13); the front axle module (1) is provided with a steer arm (8), one end of the steer arm (8) is hinged to a connecting rod (10), and the other end of the connecting rod (10) is connected to a swing arm bracket (9); the other end of the swing arm bracket (9) is fixedly connected to the bottom of the frame (100).

3. A compact charging trolley chassis according to claim 2, characterised in that: The suspension module (6) includes a pad (61) and a spring (62). The pad (61) of the suspension module (6) is a rectangular steel plate, and the spring (62) is a helical compression spring. The pad (61) is welded and fixed to the front axle module (1) and the rear axle module (2). The upper end of the spring (62) is connected to the frame (100), and the lower end is fixedly connected to the pad (61) to form an elastic support structure.

4. A compact charging trolley chassis according to claim 3, wherein: The water-cooled cabinet mounting part (5) is a rectangular groove structure with multiple mounting holes (51) at its bottom for fixing the water-cooled cabinet. The groove depth is greater than the height of the water-cooled cabinet so that the upper surface of the water-cooled cabinet is not higher than the upper plane of the chassis after it is embedded.

5. A compact charging trolley chassis according to claim 4, wherein: The steering assembly (11) and the wheel hub (13) are mounted on the axle body of the front axle module (1); the steering assembly (11) includes: a steering motor (111), a connecting arm (113) and a transmission rod (112); the steering motor (111) is connected to the transmission rod (112); the transmission rod (112) is hinged to the connecting arm (113); the connecting arm (113) is hinged to the wheel hub (13); the transmission rod (112) moves linearly back and forth along the axis of the transmission rod (112) under the forward and reverse rotation of the steering motor (111); the transmission rod (112) drives the connecting arm (113) to swing left and right; thereby causing the wheel hub (13) hinged on the connecting arm (113) to turn left and right.

6. A compact charging trolley chassis according to claim 5, wherein: The rear axle module (2) is symmetrically arranged with the front axle module (1) and is welded together to form an integral bridge body.

7. A compact charging trolley chassis according to claim 6, wherein: The control module (3) is located at the rear of the chassis and is connected to the front axle module (1) and the rear axle module (2) respectively.

8. A compact charging trolley chassis according to claim 7, characterised in that: The rear axle module (2) is equipped with a drive motor (41); the drive motor (41) is connected to the control module (3); the control module (3) controls the drive motor (41) to drive the charging vehicle to move back and forth.

9. A compact charging trolley chassis according to claim 8, characterised in that: The top of the spring (62) is provided with a mounting seat (7), which is bolted to the bottom of the frame (100) to fix the suspension module (6) to the frame (100).

10. A compact charging trolley chassis according to claim 9, characterised in that: The chassis is made of high-strength, lightweight steel and has been treated with rust prevention.

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