Hinged type movable battery replacing vehicle

Abstract

The invention discloses a hinged movable battery replacing vehicle which comprises a six-drive chassis, an upper battery replacing device and telescopic supporting legs. The chassis comprises a frame assembly composed of a front frame, a rear frame and a hinge body, the rear frame is connected with the front frame through the hinge body, and the rear frame can rotate by 360 degrees around the central axis of the hinge body. The loading battery replacing device is mounted on the rear frame, and the loading battery replacing device is constructed to grab and hoist a battery between the battery replacing vehicle and the battery replacing equipment; the telescopic supporting legs are distributed on the periphery of the rear frame, on one hand, the rear frame and the top-mounted battery replacing device are supported, and on the other hand, the angle of the rear frame is adjusted by controlling the up-down telescopic amount of the telescopic supporting legs, so that the top-mounted battery replacing device is kept horizontal. When the hinged type mobile battery replacing vehicle and the electric excavator run to a battery replacing site near a mining operation face, grabbing, hoisting and replacing of the battery between the battery replacing vehicle and the electric excavator can be achieved through wireless communication information interaction, the transition operation time of the excavator is shortened, and the mining operation efficiency is improved.

Description

Technical Field

[0001] The invention relates to an articulated mobile battery-exchanging vehicle, belonging to the technical field of mining dump trucks. Background Art

[0002] At present, electric mining machinery products have been widely promoted and applied. Although electric mining machinery products do not use fuel, they need to be charged or the battery needs to be replaced. Factors such as short battery life, long charging time, and the construction of supporting power grid facilities restrict the promotion of electric mining products.

[0003] Electric excavators operating in mining areas are primarily used for loading materials at docks, screening materials at workshop feed openings, piling dry materials, and loading materials in mine stockpiles. These operating conditions and supporting power grids have relatively good water supply, making excavator charging and battery replacement relatively convenient. When the battery of electric mining machinery runs low, there are two options: direct charging or battery replacement. Direct charging requires driving the excavator to a charging station. Due to the excavator's relatively slow travel speed, to improve excavator efficiency and reduce the cost of using the complete equipment, mining areas generally use battery replacement vehicles to replace the excavator's batteries. This allows for the original battery and spare battery to be charged and discharged in a cycle. At present, in areas with better conditions on construction trunk roads, 6×4 (four-wheel drive) mobile battery-swapping vehicles are used to replace batteries for excavators. Excavators working on mining surfaces in mining areas are all fuel vehicles. Mining surfaces are the worst working conditions in mining areas, especially in areas with perennial humidity and rain. The roads are muddy and rugged, and 6×4 (four-wheel drive) battery-swapping vehicles cannot enter normally. In addition, the battery-swapping vehicle faces huge difficulties in leveling its posture. Therefore, the promotion of electric excavator products on mining surfaces faces the problem of battery replacement. In view of the mature application of articulated dump trucks in rainy, muddy and rugged working conditions, a 6×6 (six-wheel drive) articulated mobile battery-swapping vehicle can meet the needs of battery transportation in muddy working conditions and replacing batteries for excavators. Summary of the Invention

[0004] The present invention provides an articulated mobile battery-swapping vehicle that travels back and forth between a battery-swapping station and a mining operation surface. When the articulated mobile battery-swapping vehicle and an electric excavator travel to a battery-swapping site near the mining operation surface, the battery between the battery-swapping vehicle and the electric excavator can be grabbed, hoisted, and replaced through wireless communication information interaction, thereby reducing the excavator's transfer operation time and improving mining operation efficiency.

[0005] The present invention is achieved according to the following technical solutions: An articulated mobile battery-swapping vehicle, comprising: A six-wheel drive chassis, comprising a frame assembly primarily consisting of a front frame, a rear frame, and an articulated body, wherein the rear frame is connected to the front frame via the articulated body, and the rear frame is capable of rotating 360° about a central axis of the articulated body; An upper-mounted battery-swapping device is mounted on the rear frame and is configured to grab and hoist batteries between the battery-swapping vehicle and the battery-swapping equipment; Multiple telescopic legs are distributed around the rear frame. On the one hand, they support the rear frame and the upper-mounted battery-changing device. On the other hand, the angle of the rear frame is adjusted by controlling the up and down extension and contraction amount of each telescopic leg, so that the upper-mounted battery-changing device remains level.

[0006] In some embodiments, the upper-mounted battery replacement device includes: a subframe fixed to the rear frame; a working platform fixed on the subframe; A lifting arm is arranged at the rear of the working platform, and a grabber is hinged at the free end of the lifting arm; A plurality of battery brackets for fixing battery boxes, fixed to the front center of the working platform; A gripper bracket is fixed to the front of the working platform and is used to support the gripper.

[0007] In some embodiments, the upper-mounted battery replacement device further includes: an electric control box fixed to the rear of the working platform, wherein the electric control box is provided with electric components for operating the boom; and / or, An escalator is fixed at the rear of the working platform. The escalator is constructed as a walking passage for maintenance personnel to reach the working platform from the ground or from the working platform to the ground.

[0008] In some embodiments, the plurality of telescopic legs comprises: Two front legs are mounted on both sides of the front end of the subframe, and the front legs are configured to be able to extend and retract in both horizontal and vertical directions simultaneously; Two rear legs are mounted on both sides of the rear end of the subframe, and the rear legs are configured to be able to extend and retract in both horizontal and vertical directions simultaneously; At least one auxiliary support leg is installed at a middle position of the rear end of the sub-frame, and the auxiliary support leg is configured to be telescopic in the horizontal and / or vertical direction.

[0009] In some embodiments, pads for increasing the contact area with the ground are installed at the bottoms of the front legs, rear legs and auxiliary legs.

[0010] In some embodiments, the two longitudinal beams of the rear frame are provided with a plurality of symmetrically arranged first connecting seats from front to rear along their length direction, and the two longitudinal beams of the subframe are provided with a plurality of second connecting seats corresponding one-to-one to the first connecting seats; the first connecting seats and the second connecting seats are connected together in a detachable manner by fasteners.

[0011] In some embodiments, the work platform is provided with five battery trays, four of which are used to place batteries, and the remaining battery tray is used as a battery replacement position.

[0012] In some embodiments, a tilt sensor for real-time detection of the posture angle of the rear frame is provided in the middle area of the top surface of the rear cross beam of the rear frame.

[0013] In some embodiments, the battery-swapping vehicle also includes a suspension system, and the frame assembly is connected to the drive axle in the transmission system through the suspension system. The suspension system includes a front suspension system mainly composed of a swing A-shaped suspension and a front suspension cylinder, and a rear suspension system mainly composed of an A-shaped frame, a balance beam and a tie rod.

[0014] Beneficial effects of the present invention: The present invention adopts a six-wheel drive articulated chassis with all-terrain adaptive technology, strong driving ability, and can adapt to various muddy and harsh working conditions; the inclination angle sensor on the rear frame can detect the posture angle of the whole vehicle in real time. Since the front and rear frames are connected by a hinge, they can rotate 360° along the central axis. When leveling, the angle of the rear frame is adjusted by controlling the up and down extension amount of the support legs to ensure that the upper battery exchange device remains horizontal, which is convenient for grabbing and lifting the battery; through wireless communication information interaction, the battery between the articulated mobile cabinet battery exchange vehicle and the electric excavator can be grabbed, lifted and replaced, reducing the excavator transfer operation time and improving mining operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, as part of this disclosure, are intended to provide a further understanding of the disclosure. The exemplary embodiments of the disclosure and their descriptions are intended to explain the disclosure and do not constitute undue limitations thereon. Obviously, the drawings described below are merely examples, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0016] In the attached figure: Figure 1 This is a schematic diagram of the articulated mobile battery-swapping vehicle of the present invention; Figure 2 This is a schematic diagram of the chassis of the articulated mobile battery-swapping vehicle of the present invention; Figure 3 This is a front view of the articulated mobile battery-swapping vehicle of the present invention in the loading operation state; Figure 4 A top view of the articulated mobile battery-swapping vehicle of the present invention in the loading operation state; Figure 5 It is a partial schematic diagram of the gripper bracket of the present invention; Figure 6 It is a schematic diagram of the support leg pad of the present invention; Figure 7A schematic diagram of the rear frame connecting seat of the present invention; Figure 8 Schematic diagram of the rear frame tilt angle sensor of the present invention; Figure 9 A schematic diagram of the auxiliary frame connecting seat of the present invention; Figure 10 This is a schematic diagram of the battery replacement operation of the articulated mobile battery-changing vehicle and the electric excavator of the present invention.

[0017] Including: 1. Articulated mobile battery swap vehicle chassis, 2. Upper battery swap device, 1-1. Power system, 1-2. Electrical system, 1-3. Hydraulic system, 1-4. Frame assembly, 1-5. Suspension system, 1-6. Transmission system, 2-1, subframe, 2-2, working platform, 2-3, battery box, 2-4, lifting arm, 2-5, grab, 2-6, auxiliary outrigger, 2-7, escalator, 2-8, front outrigger, 2-9, grab bracket, 2-10, electric control box, 2-11, rear outrigger, 2-12, battery bracket, 2-8-1, outrigger support rod, 2-8-2, pad, 1-4-1, connecting seat 1, 1-4-2, connecting seat 2, 1-4-3, connecting seat 3, 1-4-4, inclination sensor, 2-1-1, connecting seat 1, 2-1-2, connecting seat 2, 2-1-3, connecting seat 3.

[0018] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. The following embodiments are used to illustrate the present invention but are not used to limit the scope of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. 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 direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0022] like Figures 1-10 As shown, an articulated mobile battery-swapping vehicle includes an articulated mobile battery-swapping vehicle chassis 1 and an upper-mounted battery-swapping device 2. The articulated mobile battery-swapping vehicle chassis 1 is mainly composed of a power system 1-1, a chassis electrical system 1-2, a chassis hydraulic system 1-3, a frame assembly 1-4, a suspension system 1-5, a transmission system 1-6, telescopic legs, etc.

[0023] The specific structure of the above-mentioned frame assembly is further described below.

[0024] like Figure 1 、 Figure 2 As shown, the frame assembly 1-4 is mainly composed of a front frame, an articulated body, and a rear frame. The power system 1-1 is mainly arranged on the front frame as the power source of the whole vehicle. The frame assembly 1-4 is connected to the drive axle in the transmission system 1-6 through the suspension system 1-5. The front and rear frames can achieve 45° left and right twisting and 360° rotation along the central axis through the articulated body. The left and right steering is achieved by controlling the movement of the steering cylinder, with a small turning radius and good trafficability.

[0025] The specific structure of the above-mentioned upper-mounted battery replacement device is further explained below.

[0026] like Figure 3 、 Figure 4 、 Figure 5 、 Figure 10 As shown, the upper battery exchange device mainly consists of a subframe 2-1, a working platform 2-2, a battery box 2-3, a crane arm 2-4, a gripper 2-5, an escalator 2-7, a gripper bracket 2-9, an electric control box 2-10, and a battery bracket 2-12. The subframe 2-1 and the rear frame are fastened together by a connecting seat. The working platform 2-2 is fixed to the subframe 2-1. The working platform 2-2 is equipped with a battery bracket 2-12 and a gripper bracket 2-9. The battery bracket 2-12 is used to fix the battery. The crane arm 2-4 is fixed to the rear end of the battery exchange vehicle. The gripper 2-5 is fixed to the front end of the crane arm 2-4 and placed on the gripper bracket 2-9 to enable the grabbing and lifting of batteries between the battery exchange vehicle and the equipment being replaced. Through wireless communication information exchange, the grabbing, lifting, and replacement of batteries between the articulated mobile cabinet battery exchange vehicle and the electric excavator can be achieved, reducing the excavator transfer operation time and improving mining operation efficiency.

[0027] Further solutions, such as Figure 3 、 Figure 4 As shown, the work platform 2-2 is also equipped with an electric control box 2-10 and an escalator 2-7. The electric control box 2-10 mainly integrates the bodywork electrical wiring harness and control program, and is equipped with operation command buttons, a parameter display panel, an emergency stop switch, etc. The escalator 2-7 is mainly used for access when servicing the bodywork, facilitating the inspection and maintenance of bodywork parts.

[0028] The preferred solution is Figure 7 、 Figure 9 As shown, connectors 1-4-1, 2-4-2, and 3-1-4-3 on the rear frame are attached to connectors 1-1-1, 2-1-2, and 3-1-3 on the subframe 2-1 via fasteners. Their removable design facilitates vehicle shipment and chassis maintenance. Subframe 2-1 effectively cushions the impact of the battery on the rear frame during operation, extending its service life.

[0029] The preferred solution is Figure 3 、 Figure 4 As shown, five battery brackets 2-12 are provided on the working platform 2-2, four of which are used to place batteries, and the remaining battery bracket 2-12 is used as a battery replacement position.

[0030] The specific structure of the telescopic legs is further described below.

[0031] like Figure 3 、 Figure 4 As shown, the telescopic legs include two front legs 2-8, two rear legs 2-11 and at least one auxiliary leg 2-6. The two front legs 2-8 are mounted on both sides of the front end of the sub-frame 2-1, and the front legs 2-8 are configured to be able to telescope in both horizontal and vertical directions at the same time; the two rear legs 2-11 are mounted on both sides of the rear end of the sub-frame 2-1, and the rear legs 2-1 are configured to be able to telescope in both horizontal and vertical directions at the same time; and at least one auxiliary leg 2-6 is mounted in the middle position of the rear end of the sub-frame 2-1, and the auxiliary leg 2-6 is configured to telescope in the horizontal and / or vertical directions.

[0032] Further solutions, such as Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 As shown, pads 2-8-2 are installed on the leg support rods 2-8-1 of the front and rear legs 2-8, 2-11 and the auxiliary leg 2-6. The pads 2-8-2 are sprayed with an anti-stick coating to enhance the anti-stick property, increase the contact area between the legs and the ground, and ensure the stability of the entire vehicle when lifting batteries in muddy conditions.

[0033] Further solutions, such as Figure 8 As shown, a tilt sensor 1-4-4 is installed in the middle area of the rear crossbeam top surface of the rear frame for real-time detection of the rear frame's attitude angle. Because the front and rear frames are connected by an articulated body, they can rotate 360° along the central axis. During leveling, the angle of the rear frame is adjusted by controlling the vertical extension and contraction of the outriggers to ensure that the upper-mounted battery swap unit 2 remains horizontal, facilitating the grabbing and lifting of the batteries.

[0034] The specific structures of the above-mentioned power system, transmission system, chassis electrical system, chassis hydraulic system and suspension system are further explained below.

[0035] Powertrain 1-1 and transmission 1-6, the core components of the vehicle's power transmission, consist primarily of the engine, transmission, transfer case, drive shaft, and axles. The high-power, electronically controlled, heavy-duty engine, matched with an automatic transmission, and heavy-duty axles ensure high efficiency in all operating conditions, delivering exceptional power and fuel economy. The engine features compression and exhaust braking, providing high braking power and enhancing braking performance on long slopes. The transmission features a locking torque converter and hydraulic retarder, providing high retarding power and ensuring safety on long descents. The modular design of the axles facilitates maintenance and saves manpower and resources. The axles are equipped with transverse differential locks, while the transfer case features longitudinal differential locks. These locks are controlled via push-button switches, enabling multiple differential modes. The full-time 6x6 drive system offers strong driving capability and adapts to various muddy and harsh conditions.

[0036] Chassis electrical systems 1-2 include the engine and transmission control systems, hydraulic control system, and detection system. The upper body electrical system is fully electronically controlled, with the battery swap vehicle's gripper, turntable, boom, and other working devices operated by a remote control. Sensors monitor the posture parameters of each mechanism during operation to ensure operational safety.

[0037] The chassis hydraulic systems 1-3 mainly include the steering system and braking system; the upper hydraulic system mainly includes the outriggers, battery box base, crane, and gripper hydraulic systems. The entire vehicle adopts a post-valve compensation load-sensitive hydraulic system with high efficiency and good controllability.

[0038] Suspension systems 1-5 include the front and rear suspension systems. The vehicle utilizes a three-axle load-bearing system. The front suspension system utilizes a swinging A-type suspension with a front suspension cylinder and a hydro-pneumatic suspension cylinder, offering a long travel, adjustable stiffness, and excellent ride comfort. The rear suspension system utilizes an A-frame, a balance beam, and a tie rod, resulting in a simple and reliable structure. The balance beam pivots around the frame pin to adapt to uneven road conditions, improve tire contact, and prevent slippage.

[0039] It should be noted that since the power system, transmission system, chassis electrical system, chassis hydraulic system and suspension system are all existing technologies, they will not be described in detail here.

[0040] As can be seen from the above, the working platform 2-2 of the articulated mobile battery swap vehicle is fixed to the subframe 2-1. The battery box 2-3 is placed on the battery bracket 2-12 on the working platform 2-2 and locked with a hydraulic lock. The working platform 2-2 is also equipped with an electric control box 2-10, escalator 2-7, front support legs 2-8, rear support legs 2-11 and auxiliary support legs 2-6. The electric control box 2-10 mainly integrates the upper body electrical wiring harness and control program, and is equipped with operation command buttons, parameter display panel, emergency stop switch, etc. The escalator 2-7 is mainly used for access when repairing the upper body, facilitating the inspection and maintenance of upper body parts. The front outrigger 2-8 is located in front of the work platform 2-2 and positioned above the main longitudinal beam of the subframe. The rear outrigger 2-11 is located behind the work platform 2-2 and positioned below the main longitudinal beam of the subframe. The auxiliary outrigger is located behind the work platform 2-2 and the subframe 2-1. Pads 2-8-2 are installed on the front, rear, and auxiliary outriggers. Pads 2-8-2 are sprayed with an anti-stick coating to enhance their anti-stick properties and increase the contact area between the outriggers and the ground, ensuring the stability of the vehicle when lifting batteries in muddy conditions. A tilt sensor 1-4-4 is installed at the rear end of the rear crossbeam of the rear frame to monitor the vehicle's posture in real time. Since the front and rear frames are connected by an articulated body, they can rotate 360° along the central axis. During leveling, the angle of the rear frame is adjusted by controlling the vertical extension and contraction of the outriggers to ensure that the upper-mounted battery exchange device remains horizontal, facilitating the grabbing and lifting of batteries. The articulated mobile battery swap vehicle travels back and forth between the battery swap station and the mining operation surface. When the articulated mobile battery swap vehicle and the electric excavator drive to the battery swap site near the mining operation surface, the battery between the battery swap vehicle and the electric excavator can be grabbed, lifted and replaced through wireless communication information interaction, reducing the excavator transfer operation time and improving mining operation efficiency.

[0041] In summary, the present invention provides an articulated mobile battery-swapping vehicle that achieves the following functions and effects: 1. The front and rear legs and auxiliary legs of the articulated mobile battery swap vehicle are equipped with leg pads, which are sprayed with an anti-stick coating to enhance the anti-stick properties and increase the contact area between the legs and the ground, ensuring the stability and safety of the articulated battery swap vehicle when lifting batteries in muddy conditions.

[0042] 2. The articulated mobile battery-swapping vehicle is powerful and can meet the needs of high-efficiency operation in all working conditions. It has good adaptability to the low-oxygen environment of the plateau. The engine has decompression braking and exhaust braking functions, with high braking power, which improves the braking performance of the vehicle when going down long slopes. Its gearbox has a torque converter and hydraulic retarder with locking function, which has high retarding power and is safer when going down long slopes.

[0043] 3. The modular design of the articulated mobile battery swap vehicle's axles facilitates maintenance and saves manpower and material resources. The axles are equipped with transverse differential locks, and the transfer case is equipped with longitudinal differential locks. These locks are controlled by push-button switches to achieve multiple differential modes. The full-time 6×6 drive system provides strong driving capabilities and can adapt to various muddy and harsh working conditions.

[0044] 4. The articulated mobile battery swap vehicle features all-terrain adaptive technology. The front suspension utilizes an A-frame + hydro-pneumatic suspension for high reliability. The variable stiffness hydro-pneumatic suspension, large bore, and long stroke effectively absorb impacts from harsh road conditions, providing an optimal driving experience. The rear suspension utilizes an A-frame + balance beam + tie rod combination to enhance tire contact in complex road conditions. Maintenance-free rubber bearings are used for shock absorption, mitigating vibrations and facilitating maintenance.

[0045] 5. The subframe and rear frame of the articulated mobile battery swap vehicle are connected together through a connector. The subframe effectively buffers the impact of the battery on the frame during operation, extending the service life of the rear frame. The work platform of the articulated mobile battery swap vehicle is equipped with five battery trays, which can transport four batteries and reserve an empty battery replacement position. It can adapt to all-weather working requirements and has high transportation efficiency.

[0046] 6. The tilt sensor installed on the rear frame of the articulated mobile battery swap vehicle can monitor the vehicle's posture angle in real time. Since the front and rear frames are connected by an articulated body, they can rotate 360° along the central axis. During leveling, the angle of the rear frame is adjusted by controlling the vertical extension and contraction of the outriggers to ensure that the upper battery swap device remains horizontal, facilitating the grabbing and lifting of batteries. Wireless communication information exchange enables the grabbing, lifting, and replacement of batteries between the articulated mobile battery swap vehicle and the electric excavator, reducing excavator transfer time and improving mining efficiency.

[0047] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0048] Furthermore, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are also intended to fall within the scope of protection of the present invention and form different embodiments. For example, in the above embodiments, those skilled in the art will be able to use them in combination based on the known technical solutions and the technical problems to be solved by this application.

[0049] The above description is merely a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as above in terms of a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the present invention can make some changes or modifications to equivalent embodiments using the above-mentioned technical contents without departing from the scope of the technical solution of the present invention. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the solution of the present invention.

Claims

1. An articulated mobile battery-swapping vehicle, characterized in that: include: A six-wheel drive chassis, comprising a frame assembly primarily consisting of a front frame, a rear frame, and an articulated body, wherein the rear frame is connected to the front frame via the articulated body, and the rear frame is capable of rotating 360° about a central axis of the articulated body; An upper-mounted battery-swapping device is mounted on the rear frame and is configured to grab and hoist batteries between the battery-swapping vehicle and the battery-swapping equipment; Multiple telescopic legs are distributed around the rear frame. On the one hand, they support the rear frame and the upper-mounted battery-changing device. On the other hand, the angle of the rear frame is adjusted by controlling the up and down extension and contraction amount of each telescopic leg, so that the upper-mounted battery-changing device remains level.

2. The articulated mobile battery-swapping vehicle according to claim 1, characterized in that: The upper-mounted battery replacement device includes: a subframe fixed to the rear frame; a working platform fixed on the subframe; A lifting arm is arranged at the rear of the working platform, and a grabber is hinged at the free end of the lifting arm; A plurality of battery brackets for fixing battery boxes, fixed to the front center of the working platform; A gripper bracket is fixed to the front of the working platform and is used to support the gripper.

3. The articulated mobile battery-swapping vehicle according to claim 2, characterized in that: The upper-mounted battery replacement device further includes: an electric control box fixed to the rear of the working platform, wherein the electric control box is provided with electric components for operating the boom; and / or, An escalator is fixed at the rear of the working platform. The escalator is constructed as a walking passage for maintenance personnel to reach the working platform from the ground or from the working platform to the ground.

4. The articulated mobile battery-swapping vehicle according to claim 2, characterized in that: The plurality of telescopic legs include: Two front legs are mounted on both sides of the front end of the subframe, and the front legs are configured to be able to extend and retract in both horizontal and vertical directions simultaneously; Two rear legs are mounted on both sides of the rear end of the subframe, and the rear legs are configured to be able to extend and retract in both horizontal and vertical directions simultaneously; At least one auxiliary support leg is installed at a middle position of the rear end of the sub-frame, and the auxiliary support leg is configured to be telescopic in the horizontal and / or vertical direction.

5. The articulated mobile battery-swapping vehicle according to claim 4, characterized in that: The bottoms of the front legs, rear legs and auxiliary legs are all equipped with pads for increasing the contact area with the ground.

6. The articulated mobile battery-swapping vehicle according to claim 2, characterized in that: The two longitudinal beams of the rear frame are each provided with a plurality of symmetrically arranged first connecting seats from front to rear along the length direction thereof, and the two longitudinal beams of the subframe are provided with a plurality of second connecting seats corresponding one-to-one to the first connecting seats; the first connecting seats and the second connecting seats are connected together in a detachable manner by fasteners.

7. The articulated mobile battery-swapping vehicle according to claim 2, characterized in that: The work platform is provided with five battery brackets, four of which are used for placing batteries, and the remaining one is used as a battery replacement position.

8. The articulated mobile battery-swapping vehicle according to claim 1, characterized in that: A tilt sensor for detecting the posture angle of the rear frame in real time is provided in the middle area of the top surface of the rear cross beam of the rear frame.

9. The articulated mobile battery-swapping vehicle according to claim 1, characterized in that: The battery-swapping vehicle also includes a suspension system, and the frame assembly is connected to the drive axle in the transmission system through the suspension system. The suspension system includes a front suspension system mainly composed of a swing A-shaped suspension and a front suspension cylinder, and a rear suspension system mainly composed of an A-shaped frame, a balance beam and a transverse tie rod.

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