Hydrogen exchange station cart

Abstract

The invention relates to the technical field of hydrogen energy supply equipment, and discloses a hydrogen exchange station cart which comprises a container bottom plate, a bottom plate rail is mounted on the upper surface of the container bottom plate, a lower frame is arranged on the upper side of the bottom plate rail, a bottom plate sliding seat is fixedly connected to the bottom of the lower frame, and a driving mechanism is arranged on the right side of the lower frame. The side, away from the driving mechanism, of the lower frame is fixedly connected with a control cabinet, the right surface of the lower frame is provided with an anti-overturning machine hook, and the upper side of the lower frame is connected with an upper frame through high-strength connecting bolts. The problem of transportation height limitation is solved through the upper and lower layered frame design, field assembly is facilitated, mechanical synchronization and stable operation of the walking wheels are achieved through the mechanical transmission mode of the motor and the coupler, the control requirement is reduced, meanwhile, the installation workload is reduced through the integrated laser scanning design, and the cost is reduced. The photovoltaic module on the top has the functions of power supply and rain shielding, and aging of equipment is effectively delayed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydrogen energy supply equipment, in particular to a hydrogen exchange station trolley. BACKGROUND

[0002] With the rapid development of hydrogen energy technology, automated hydrogen exchange stations have become an important infrastructure for hydrogen energy application, and the hydrogen exchange station trolley as the core handling equipment is responsible for heavy lifting and transfer operations between hydrogen containers and hydrogen filling stations.

[0003] However, the existing hydrogen exchange station trolley still has many technical problems in structure design, transportation and installation, and operation control. The traditional hydrogen exchange station trolley usually adopts an overall large-span welded structure. This bulky equipment often faces the restriction of road transportation height and width when it is transported out of the factory, and often needs to be cut into sections for transportation and then welded and assembled on site, which not only increases logistics and construction costs, but also puts high requirements on the load-bearing capacity of the steel structure foundation on site. In terms of walking drive control, the existing equipment mostly adopts a double-sided independent motor drive method, which highly depends on complex electric control synchronization algorithms. Once the control system fluctuates or the loads on both sides are uneven, it is easy to cause the rotation speeds of the walking wheels on both sides to be inconsistent, thereby causing the vehicle body to deviate, gnaw the track, or even be mechanically stuck, seriously affecting the stability and safety of operation.

[0004] In addition, the hydrogen exchange station trolley in the prior art often lacks integrated design in the layout of intelligent sensing devices, and the wire harness of various laser scanning and positioning sensors is long and scattered, resulting in complicated on-site wiring and large installation and debugging workload. At the same time, since such equipment is operated in outdoor open conditions for a long time, there is a lack of effective top protection measures, so that the key components such as motors, grippers and control cabinets are easily eroded by rainwater and directly irradiated by sunlight, accelerating the aging process of the equipment, and the wide space on the top of the equipment cannot be effectively utilized to assist the energy supply of the equipment. Therefore, there is an urgent need for a hydrogen exchange station trolley with a structure convenient for transportation and assembly, simple and reliable walking control, and high integration. SUMMARY

[0005] The purpose of the present application is to provide a hydrogen exchange station trolley, which solves the problems of difficult transportation and assembly of existing large hydrogen exchange station trolleys due to the overall large structure, complex synchronization control and unstable operation due to double-sided independent drive, complicated wiring due to scattered sensors, and easy aging of outdoor equipment due to lack of top protection.

[0006] In order to achieve the above object, the present application is realized by the following technical scheme: The hydrogen exchange station trolley comprises a container bottom plate, a bottom plate track is arranged on the upper surface of the container bottom plate, a lower frame is arranged on the upper side of the bottom plate track, a bottom plate sliding seat is fixedly connected to the bottom of the lower frame, a driving mechanism is arranged on the right side of the lower frame, a control cabinet is fixedly connected to the side of the lower frame away from the driving mechanism, an anti-overturning hook is arranged on the right surface of the lower frame, an upper frame is connected to the upper side of the lower frame through high-strength connecting bolts, a trolley track is arranged in the upper frame, a trolley is slidably connected in the trolley track, a gripper is arranged on the lower side of the trolley, a positioning assembly is arranged on the trolley and the lower frame, and a photovoltaic assembly is arranged on the upper side of the upper frame.

[0007] The driving mechanism comprises a walking motor, the walking motor is arranged on the right side of the lower frame, the output end of the walking motor is connected with one end of a transmission shaft through a shaft coupling, the other end of the transmission shaft is fixedly connected with a driving walking wheel, and a driven walking wheel is arranged on the side of the lower frame away from the driving walking wheel.

[0008] Preferably, the anti-overturning hook comprises a mounting plate fixedly arranged on the right surface of the lower frame, two guide rods arranged on the mounting plate, springs sleeved on the guide rods, two connecting frames fixedly connected to the bottom of the mounting plate, anti-overturning wheels arranged on the inner sides of the connecting frames, and H-shaped steel tracks installed on the inner sides of the bottom plate tracks, wherein the anti-overturning wheels are slidably connected on both sides of the H-shaped steel tracks.

[0009] Preferably, the photovoltaic assembly comprises a solar cell panel arranged on the top of the upper frame, a plurality of support frames fixedly connected to the bottom of the solar cell panel, and the support frames are hingedly arranged on the outer side of the upper frame.

[0010] Preferably, the positioning assembly comprises a trolley laser positioning device arranged on the trolley, a camera installed on the outer side of the trolley track, and a laser positioning device installed on the lower frame.

[0011] Preferably, a vehicle side laser scanner is installed on the front side of the lower frame, and a plate vehicle side laser scanner is fixedly connected to the side of the lower frame away from the vehicle side laser scanner.

[0012] Preferably, the bottom plate sliding seat is slidably connected on the bottom plate track, and is used for supporting the movement of the lower frame on the container bottom plate.

[0013] Preferably, the bottom plate sliding seat is slidably arranged on the bottom plate track, and is used for supporting the movement of the lower frame on the container bottom plate.

[0014] Preferably, the high-strength connecting bolts vertically penetrate the connection between the upper frame and the lower frame.

[0015] Preferably, the H-shaped steel track extends along the length direction of the bottom plate track, and the anti-overturning wheel clamp is arranged in the groove of the H-shaped steel track.

[0016] Preferably, the grabber is installed at the bottom center of the trolley for grabbing operation.

[0017] Preferably, the control cabinet is electrically connected with the driving mechanism, the trolley and the photovoltaic module for controlling the movement of the trolley.

[0018] In summary, the present application has the following at least one beneficial technical effect:

[0019] 1. The present application adopts upper and lower layer design, and connects the upper frame and the lower frame through high-strength connecting bolts, effectively solves the problem of overall transportation super-high, and can realize convenient and rapid assembly on site; at the same time, this walking frame style reasonably distributes the load, significantly reduces the bearing requirement of the equipment on the site steel structure or container bottom plate.

[0020] 2. The present application adopts integrated design, directly integrates the vehicle side laser scanning and the plate trolley side laser scanning on the lower frame, greatly shortens the wire harness wiring length, reduces the work load of on-site wiring and installation; in addition, the driving mechanism adopts mechanical transmission form of walking motor cooperating with shaft coupling and transmission shaft, forcibly realizes mechanical synchronization of the driving walking wheels on both sides, without complex electric control synchronization algorithm, which can ensure smooth walking and reduce the requirement for the control system.

[0021] 3. The present application sets the photovoltaic module on the top of the upper frame, converts light energy into electric energy by using the solar panel to assist power supply for the equipment, realizes green energy saving; at the same time, the photovoltaic module is used as a rain shelter in structure, effectively blocks rainwater and direct sunlight, protects the trolley, grabber and control cabinet below, thereby delays the aging speed of the key components. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a perspective view of the present application;

[0023] Figure 2 It is a side view of the present application;

[0024] Figure 3 It is a schematic view of the grabber structure of the present application;

[0025] Figure 4 It is a schematic view of the trolley structure of the present application;

[0026] Figure 5 It is a schematic view of the anti-overturning hook structure of the present application;

[0027] Figure 6 It is a schematic view of the trolley laser positioning structure of the present application;

[0028] Figure 7 Structure diagram of the laser positioning and driven walking wheel structure of the application;

[0029] Figure 8 Structure diagram of A of the application.

[0030] 1, upper frame; 2, lower frame; 3, trolley track; 4, trolley; 5, bottom plate slide; 6, vehicle side laser scanning; 7, high-strength connecting bolt; 8, plate vehicle side laser scanning; 9, driving mechanism; 91, walking motor; 92, shaft coupling; 93, transmission shaft; 94, driving walking wheel; 95, driven walking wheel; 10, bottom plate track; 11, grab hand; 12, positioning assembly; 121, trolley laser positioning; 122, camera; 123, laser positioning; 13, control cabinet; 14, photovoltaic assembly; 141, solar panel; 142, support frame; 15, anti-overturning hook; 151, guide rod; 152, H-shaped steel track; 153, mounting plate; 154, spring; 155, anti-overturning wheel; 156, connecting frame; 16, container bottom plate. DETAILED DESCRIPTION

[0031] The application will be further described below in combination with the accompanying drawings. Figure 1 - the accompanying drawings Figure 8 The application will be further described below in combination with the accompanying drawings.

[0032] The application provides a hydrogen exchange station trolley, which comprises a container bottom plate 16, the upper surface of the container bottom plate 16 is provided with a bottom plate track 10, the upper side of the bottom plate track 10 is provided with a lower frame 2, the bottom of the lower frame 2 is fixedly connected with a bottom plate slide 5, the bottom plate slide 5 is slidingly connected to the bottom plate track 10 and is used for supporting the lower frame 2 to move on the container bottom plate 16, the right side of the lower frame 2 is provided with a driving mechanism 9, the side of the lower frame 2 away from the driving mechanism 9 is fixedly connected with a control cabinet 13, the right surface of the lower frame 2 is provided with an anti-overturning hook 15, the upper side of the lower frame 2 is connected with an upper frame 1 through a high-strength connecting bolt 7, the high-strength connecting bolt 7 penetrates through the connection between the upper frame 1 and the lower frame 2 vertically, the inside of the upper frame 1 is provided with a trolley track 3, the inside of the trolley track 3 is slidingly connected with a trolley 4, the lower side of the trolley 4 is provided with a grab hand 11, the grab hand 11 is installed at the bottom center position of the trolley 4 and is used for grabbing work, the trolley 4 and the lower frame 2 are provided with a positioning assembly 12, and the upper side of the upper frame 1 is provided with a photovoltaic assembly 14.

[0033] The driving mechanism 9 comprises a walking motor 91, the walking motor 91 is arranged at the right side of the lower frame 2, the output end of the walking motor 91 is connected with one end of a transmission shaft 93 through a shaft coupling 92, the other end of the transmission shaft 93 is fixedly connected with a driving walking wheel 94, and the side of the lower frame 2 away from the driving walking wheel 94 is provided with a driven walking wheel 95.

[0034] Specifically, the upper frame 1 and the lower frame 2 are in a separated state, which greatly reduces the height of the monomer transportation, so that it can adapt to the standard container transportation or the road height limit requirement, and avoids the logistics problem caused by the equipment height. After arriving at the site, the construction personnel only need to vertically align and fasten the two through high-strength connecting bolts 7, so as to quickly restore to a rigid whole frame, without complex on-site welding operation, which significantly reduces the requirements for the on-site construction environment and the steel structure foundation.

[0035] In terms of walking driving, the application discards the traditional double-sided independent motor driving mode and adopts a mechanical synchronous driving scheme. When the control cabinet 13 issues a walking instruction, the walking motor 91 starts to operate, and the rotating torque output by the walking motor 91 is transmitted to the transmission shaft 93 across the vehicle body through the shaft coupling 92. The transmission shaft 93 serves as a rigid connecting piece and simultaneously and equally transmits power to the driving walking wheels 94 located on both sides of the lower frame 2. This purely mechanical transmission mode physically ensures that the angular velocities of the left and right walking wheels are always consistent, completely eliminating the out-of-sync phenomenon caused by the performance difference of the motors or uneven load. In cooperation with the guiding action of the bottom plate slide 5 on the bottom plate track 10, the deviation, rail biting or jamming phenomenon that may occur during long-span walking of the vehicle body is effectively prevented, which greatly improves the stability and reliability of the equipment operation, and also reduces the dependence of the control system on the synchronization algorithm, making the control logic more simple and efficient.

[0036] The anti-overturning hook 15 comprises a mounting plate 153 fixed on the right surface of the lower frame 2, two guide rods 151 are arranged on the mounting plate 153, springs 154 are sleeved on the guide rods 151, two connecting frames 156 are fixedly connected at the bottom of the mounting plate 153, anti-overturning wheels 155 are arranged on the inner sides of the connecting frames 156, H-shaped steel tracks 152 are installed on the inner sides of the bottom plate tracks 10, the anti-overturning wheels 155 are slidably connected on both sides of the H-shaped steel tracks 152, the H-shaped steel tracks 152 extend along the length direction of the bottom plate tracks 10, and the anti-overturning wheels 155 are clamped in the grooves of the H-shaped steel tracks 152.

[0037] Specifically, the anti-overturning hook 15 is a key safety component to ensure the safe operation of the trolley under harsh working conditions. In the actual operation of the hydrogen exchange station trolley, lateral wind load caused by strong wind weather or eccentric load moment caused by the lateral movement of the grab hand 11 when grabbing heavy hydrogen cylinder groups may lead to the risk of unilateral lifting or overturning of the lower frame 2. At this time, the anti-overturning hook 15 plays a core locking role, and the anti-overturning wheel 155 is limited inside the groove of the H-shaped steel track 152 laid on the inside of the bottom plate track 10. During normal driving, the anti-overturning wheel 155 rolls along with the trolley along the track, and the spring 154 is in a slightly compressed state, and the elastic pre-tightening force is applied to the mounting plate 153 and the connecting frame 156 through the guide rod 151, so that the anti-overturning wheel 155 can flexibly fit the track operation, absorb the vibration caused by the unevenness of the track, and play a buffering and damping effect, avoiding rigid jamming. Once the trolley is tilted due to external force, the lower frame 2 drives the mounting plate 153 to move upward, and at this time the anti-overturning wheel 155 will immediately jam the inside of the upper flange of the H-shaped steel track 152. The geometric shape of the H-shaped steel track 152 provides strong reverse clamping force, which physically limits the vertical displacement of the trolley, thereby eliminating the overturning risk in the embryonic state. This design not only realizes the anti-overturning protection throughout the stroke, but also ensures smooth walking through the elastic floating mechanism, and takes into account safety and motion performance.

[0038] The photovoltaic module 14 includes a solar panel 141 arranged at the top of the upper frame 1, and a plurality of support frames 142 fixedly connected to the bottom of the solar panel 141 and hingedly installed on the outer side of the upper frame 1.

[0039] Specifically, the photovoltaic module 14 is a flexible energy supplement device. Considering the diversity of the hydrogen exchange station trolley application environment, it can be independently selected whether to install the module according to the on-site power supply situation. Since the hydrogen exchange station trolley is usually applied to an outdoor open environment, and the projection area of the equipment on the top is large, the application fully utilizes this space characteristic and lays solar panels 141 on the top of the upper frame 1. During daytime work, the solar panels 141 absorb solar radiation and convert it into electrical energy, which is connected to the control cabinet 13 or the energy storage unit through a cable, providing auxiliary power for the sensors, lighting systems, cameras 122 and low-power control elements on the trolley. This design effectively utilizes clean energy, reduces the overall operating energy consumption of the equipment, and meets the green and low-carbon concept of the hydrogen energy industry. More importantly, the photovoltaic module 14 forms a shielding layer covering the full length of the device in structure. It acts like a huge rain shelter, directly blocking the direct erosion of rain and snow on the lower trolley 4, trolley track 3, grabber 11 and precision electrical elements, and also avoiding the problem of cable aging or equipment overheating caused by summer sun exposure. The support frame 142 is installed in a hinged manner, which not only supports the battery panel, but also allows for fine tuning (if necessary) according to the local latitude and light angle during installation and debugging to achieve the best power generation efficiency. This functionally multiplexed design significantly extends the service life of the core equipment and reduces maintenance costs without adding additional building structures.

[0040] The positioning assembly 12 includes a trolley laser positioning 121, the trolley laser positioning 121 is arranged on the trolley 4, a camera 122 is installed on the outside of the trolley track 3, and a laser positioning 123 is installed on the lower frame 2.

[0041] Specifically, first, the laser positioning 123 installed on the lower frame 2 is mainly responsible for the longitudinal travel positioning of the trolley. It calculates the absolute position coordinates of the trolley on the container floor in real time by scanning the reflector or feature code arranged along the bottom plate track 10, and feeds back the data to the control cabinet 13 to control the driving mechanism to realize the fast movement and accurate parking of the trolley between different stations. When the trolley is locked in place, the trolley 4 moves laterally in the trolley track 3, and the trolley laser positioning 121 installed on the trolley detects the lateral displacement data of the trolley relative to the frame in real time and directly feeds back to the control cabinet 13. The control cabinet 13 only controls the start and stop of the trolley motor according to the laser feedback data, so that the center point of the gripper 11 accurately moves to the preset operation coordinate. In addition, in order to ensure the visualization and safety of the operation process, a camera 122 is installed on the outside of the trolley track 3. Unlike the positioning logic, the camera 122 does not participate in the automatic position correction of the trolley or the trolley. Its main function is to collect real-time video images of the hydrogen exchange operation area and transmit the pictures to the background station control system or the human-computer interaction interface. The operation and maintenance personnel or the remote monitoring system can directly monitor the grabbing action of the gripper 11 and the state of the hydrogen cylinder group through the camera 122, realize the whole process visualization monitoring and safety protection of the hydrogen exchange process, and once the abnormality (such as foreign matter intrusion or mechanical jam) is found, manual intervention or safety shutdown can be triggered.

[0042] The vehicle side laser scanning 6 is installed on the front side of the lower frame 2, and the plate car side laser scanning 8 is fixedly connected to the side of the lower frame 2 away from the vehicle side laser scanning 6.

[0043] Specifically, the vehicle side laser scanning 6 and the plate car side laser scanning 8 are directly integrated and installed on the front and rear sides of the lower frame 2. The vehicle side laser scanning 6 is mainly used for scanning the hydrogen cylinder group on the hydrogen exchange vehicle (such as a hydrogen energy heavy truck) parked outside the hydrogen exchange station to obtain its accurate spatial position and attitude information; the plate car side laser scanning 8 is mainly used for scanning the position of the full or empty hydrogen cylinder group stored on the container / plate car. When the trolley is in place, the control cabinet 13 performs three-dimensional scanning or contour detection on the target area through the two laser scanning devices to calculate the accurate coordinates of the target hydrogen cylinder group relative to the trolley frame. These data are used to correct the grabbing or placing trajectory of the gripper 11 to ensure that the hydrogen exchange operation can be accurately completed under different loading conditions (such as vehicle parking position deviation, plate car vibration displacement, etc.). Not only does it greatly shorten the wire distance between the sensing device and the control cabinet 13, but it also reduces the on-site wiring difficulty, and more importantly, it realizes the active perception of the trolley to the operation environment. In addition, in order to ensure the safety of the trolley moving on the bottom plate track 10, the trolley can be additionally equipped with a laser radar in the walking direction for detecting track obstacles and personnel intrusion.

[0044] The control cabinet 13 is electrically connected with the driving mechanism 9, the trolley 4 and the photovoltaic module 14 for controlling the trolley to run.

[0045] Specifically, the control cabinet 13 integrates a power management module, a PLC control unit, a motor driver, and a signal processing terminal. It is connected with the driving mechanism 9, the trolley 4, the positioning assembly 12, the laser scanning assembly, and the photovoltaic assembly 14 through electrical lines. In terms of operation logic, the control cabinet 13 first receives electrical energy from the photovoltaic assembly 14 for voltage stabilization and distribution. When receiving a work instruction, it comprehensively processes the position coordinate deviation feedback by the positioning assembly 12, accurately adjusts the rotation speed and start-stop of the walking motor 91 through PID algorithm or motion control algorithm, and drives the trolley to the target position. At the same time, it monitors the safety signals of the vehicle-side laser scanning 6 and the plate trolley-side laser scanning 8 in real time. Once an alarm signal is received, the internal safety logic circuit will have the highest priority to cut off the motor power output to ensure safety. In addition, the control cabinet 13 is also responsible for coordinating the action timing of the trolley 4 and the gripper 11 to ensure automatic connection. It realizes all-around monitoring and closed-loop control of the trolley running state, and improves the automation level and response speed of the hydrogen exchange operation.

[0046] Working principle: When using the device, first, the upper frame 1 and the lower frame 2 are conveniently assembled on site through high-strength connecting bolts 7. This upper and lower layered design ensures that the transportation height does not exceed the limit and reduces the requirements for the on-site steel structure. Then, the control cabinet 13 controls the driving mechanism 9 to start according to the full-travel closed-loop signal feedback by the laser positioning 123 in the positioning assembly 12. The power output by the walking motor 91 is transmitted to the transmission shaft 93 through the shaft coupling 92, driving the two sides of the driving walking wheel 94 to mechanically synchronize rotation, driving the bottom plate sliding seat 5 to run smoothly on the bottom plate track 10, effectively reducing the control difficulty. In this process, the vehicle-side laser scanning 6 and the plate trolley-side laser scanning 8 integrated in the front and rear of the lower frame 2 detect obstacles in real time, and the anti-overturning hook 15 uses the anti-overturning wheel 155 to be clamped in the H-shaped steel track 152 in cooperation with the spring 154 buffer to ensure safe operation. After reaching the work position, the trolley 4 moves along the trolley track 3, and the camera 122 and the trolley laser positioning 121 assist the gripper 11 to complete the grabbing. The photovoltaic assembly 14 uses the solar panel 141 to supply power to the device while playing the role of a rain shelter, delaying the aging of the device.

Claims

1. A hydrogen exchange station vehicle, including a container floor (16), characterized in that, The container floor (16) is equipped with a floor track (10) on its upper surface. A lower frame (2) is provided on the upper side of the floor track (10). A floor slide (5) is fixedly connected to the bottom of the lower frame (2). A drive mechanism (9) is provided on the right side of the lower frame (2). A control cabinet (13) is fixedly connected to the side of the lower frame (2) away from the drive mechanism (9). An anti-tipping hook (15) is provided on the right surface of the lower frame (2). An upper frame (1) is connected to the upper side of the lower frame (2) by high-strength connecting bolts (7). A trolley track (3) is installed inside the upper frame (1). A trolley (4) is slidably connected inside the trolley track (3). A gripper (11) is provided on the lower side of the trolley (4). A positioning component (12) is provided on the trolley (4) and the lower frame (2). A photovoltaic module (14) is provided on the upper side of the upper frame (1). The drive mechanism (9) includes a walking motor (91), which is located on the right side of the lower frame (2). The output end of the walking motor (91) is connected to one end of the transmission shaft (93) via a coupling (92). The other end of the transmission shaft (93) is fixedly connected to a drive walking wheel (94). A driven walking wheel (95) is installed on the side of the lower frame (2) away from the drive walking wheel (94).

2. The hydrogen exchange station vehicle according to claim 1, characterized in that, The anti-tipping hook (15) includes a mounting plate (153), which is fixed to the right surface of the lower frame (2). Two guide rods (151) are provided on the mounting plate (153), and springs (154) are sleeved on the guide rods (151). Two connecting frames (156) are fixedly connected to the bottom of the mounting plate (153). Anti-tipping wheels (155) are provided inside the connecting frames (156). H-shaped steel rails (152) are installed inside the bottom plate rail (10). The anti-tipping wheels (155) are slidably connected to both sides of the H-shaped steel rails (152).

3. The hydrogen exchange station vehicle according to claim 1, characterized in that, The photovoltaic module (14) includes a solar panel (141), which is disposed on the top of the upper frame (1). Multiple support frames (142) are fixedly connected to the bottom of the solar panel (141), and the support frames (142) are hinged to the outside of the upper frame (1).

4. The hydrogen exchange station vehicle according to claim 1, characterized in that, The positioning component (12) includes a trolley laser positioning (121), which is set on the trolley (4). A camera (122) is installed on the outside of the trolley track (3), and a laser positioning (123) is installed on the lower frame (2).

5. The hydrogen exchange station vehicle according to claim 1, characterized in that, A vehicle-side laser scanner (6) is installed on the front side of the lower frame (2), and a flatbed-side laser scanner (8) is fixedly connected to the side of the lower frame (2) away from the vehicle-side laser scanner (6).

6. The hydrogen exchange station vehicle according to claim 1, characterized in that, The bottom plate slide (5) is slidably connected to the bottom plate track (10) to support the lower frame (2) to move on the container bottom plate (16).

7. The hydrogen exchange station vehicle according to claim 1, characterized in that, The high-strength connecting bolt (7) passes vertically through the connection between the upper frame (1) and the lower frame (2).

8. The hydrogen exchange station vehicle according to claim 2, characterized in that, The H-shaped steel rail (152) extends along the length of the base plate rail (10), and the anti-tipping wheel (155) is engaged in the groove of the H-shaped steel rail (152).

9. The hydrogen exchange station vehicle according to claim 1, characterized in that, The gripper (11) is installed at the bottom center of the trolley (4) for gripping operations.

10. The hydrogen exchange station vehicle according to claim 1, characterized in that, The control cabinet (13) is electrically connected to the drive mechanism (9), the trolley (4) and the photovoltaic module (14) for controlling the operation of the trolley.

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