Transport rack, transport vehicle and loading and unloading method for mobile charging pile

Abstract

A transport rack for a mobile charging pile is disclosed, comprising a base, on which at least one pair of slides is arranged; a retractable frame, comprising a fixed frame, a moving assembly and a driving assembly, wherein the fixed frame is arranged at one end of the base, the fixed frame comprises fixed plates at both ends and a guide rod arranged therebetween, the moving assembly is displaceably sleeved on the guide rod, the moving assembly comprises a moving plate movably sleeved on the guide rod and a driving rod arranged on the moving plate, the driving rod passes through the fixed plate and extends to the other end of the base, and the driving assembly is connected to the driving rod; a lifting device is arranged at the other end of the base and fixedly connected to the driving rod, at least two pairs of wheel sets are arranged at the bottom of the lifting device, the wheel sets cooperate with the slides, the lifting device is provided with a retractable support mechanism, and the bottom is provided with a wheel set. A transport vehicle and a loading and unloading method are also proposed, and the above scheme can be used to ensure the stability of the frame structure during the loading and unloading process of the mobile charging pile, and to improve the service life of the transport rack.

Description

Technical Field

[0001] The present invention relates to the field of transportation equipment, and in particular to a transportation frame, a transportation vehicle and a loading and unloading method for a mobile charging pile. Background Art

[0002] With the rapid development of new energy vehicles, the proportion of new energy vehicles in the total number of vehicles is getting higher and higher. In response to the charging needs of new energy vehicles, many mobile charging piles have been launched on the market. However, the existing mobile charging piles are large in size and weight, and there is no special tool to carry them. The transportation cost is high, and they cannot be promoted on a large scale. The utilization rate is low. Although some of them have auxiliary power systems, they can only move within a small range, which is not convenient for long-distance dispatching and delivery.

[0003] The Chinese patent with the publication number CN211166625U discloses a transport frame and a power delivery vehicle for mobile charging piles. The transport frame includes an inner frame, an outer frame, an X-axis drive assembly and a Y-axis drive assembly. One of the inner frame and the outer frame is provided with a conical guide rail. The inner frame or the outer frame corresponding to the conical guide rail is provided with a guide assembly. The guide assembly includes a guide groove and a guide wheel. The conical guide rail is coupled with the guide assembly. The X-axis drive assembly is installed on the side opposite to the movement direction of the outer frame and the inner frame, and the Y-axis drive assembly is arranged on the top of the inner frame. A power delivery vehicle is also proposed, including the above-mentioned transport frame, a positioning device and a control system. The positioning device adopts a GPS system or a Beidou navigation system. The control system is used to control the movement and operation of the above-mentioned transport frame. Through the cooperation of the conical guide rail and the guide wheel, the loading and unloading of the mobile charging pile can be realized more smoothly without generating huge noise.

[0004] However, the inner and outer frames of the above-disclosed transport rack and the power transmission vehicle are connected by a pull-out structure similar to a matchbox. During the loading and unloading process of the charging pile, due to the excessive weight of the mobile charging pile, when the charging pile moves away from the outer frame along with the inner frame, the inner frame will generate a huge interaction force with the outer frame due to the rod principle under the dead weight of the mobile charging pile. Over time, the inner and outer frames will produce permanent deformation and cannot operate normally. Since the inner and outer frames are welded with angle steel, the manufacturing is relatively troublesome, and the installation or maintenance and replacement are also extremely inconvenient. Summary of the invention

[0005] In order to solve the problem in the prior art of mobile charging pile transport racks that the weight of the mobile charging pile causes the stress on the frame structure to cause frame deformation, thereby affecting the service life of the transport rack, the present invention proposes a transport rack, a transport vehicle and a loading and unloading method for mobile charging piles to solve the above technical problems.

[0006] According to a first aspect of the present invention, a transport rack for a mobile charging pile is proposed, comprising:

[0007] A base, wherein at least one pair of slide grooves is provided on the base;

[0008] The telescopic frame comprises a fixed frame, a moving assembly and a driving assembly, wherein the fixed frame is arranged at one end of the base, the fixed frame comprises fixed plates arranged at both ends and a guide rod arranged between the fixed plates, the moving assembly is displaceably sleeved on the guide rod, the moving assembly comprises a moving plate movably sleeved on the guide rod and a driving rod arranged on the moving plate, the driving rod passes through the fixed plate and extends to the other end of the base, and the driving assembly drives the driving rod to make the moving assembly displace on the guide rod;

[0009] The lifting device is arranged at the other end of the base adjacent to the retractable frame and is fixedly connected to the driving rod. At least two pairs of wheel groups are arranged at the bottom of the lifting device, and the wheel groups cooperate with the slide grooves. A retractable supporting mechanism is arranged on the lifting device, and a wheel group is arranged at the bottom of the supporting mechanism.

[0010] Preferably, a control module is also included, the control module is used to control the driving assembly to stop operating after the wheel group of the support mechanism leaves the slide groove for a predetermined distance, and continue to control the driving assembly to operate until the lifting device is completely separated from the base after the support mechanism is extended and contacts the ground; or control the driving assembly to stop after the wheel group of the support mechanism returns to a predetermined distance from the slide groove, and continue to control the driving assembly to operate until the lifting device returns to the base after the support mechanism is reset. The setting of the control module can ensure that the lifting device will not cause deformation of the overall frame structure due to the moment generated by suspension during loading and unloading.

[0011] Preferably, the moving assembly further comprises a sliding rod arranged parallel to the driving rod, one end of the sliding rod is fixed to the moving plate, and the other end passes through the fixed plate and is fixedly connected to the lifting device. The arrangement of the sliding rod can increase the stability of the moving assembly.

[0012] Further preferably, the guide rod, the slide rod and the drive rod are matched with the fixed plate or the movable plate through a plurality of sleeves. The sleeves can be used to facilitate the connection and matching of the guide rod, the slide rod and the drive rod with the fixed plate or the movable plate.

[0013] Further preferably, the guide rod is fixedly arranged on the fixed plate through a sleeve, one end of the slide rod and the drive rod is fixedly arranged on the movable plate through the sleeve, and the other end can slide through the sleeve arranged on the fixed plate.

[0014] Further preferably, the guide rod, the slide rod and the drive rod are all hollow structures. With the hollow structure, the overall weight can be reduced on the one hand, and the control circuit can be arranged on the other hand.

[0015] Further preferably, the driving assembly includes a motor and a screw, the motor is fixedly arranged on the fixed frame, the screw passes through the fixed plate and the movable plate and extends to the inside of the driving rod, and a screw nut cooperating with the screw is fixedly arranged on the sleeve fixed to the driving rod. The screw transmission method can facilitate the displacement control of the lifting device.

[0016] Further preferably, the driving rod and the sliding rod pass through one end of the lifting device, extend to the other end of the lifting device, and are fixedly matched by clamps fixed to both ends of the lifting device. This arrangement facilitates the disassembly and maintenance of the lifting device.

[0017] Preferably, a baffle is detachably arranged between the two movable plates on both sides and between the two fixed plates on one side of the lifting device, and a second slide groove cooperating with the bottom roller of the mobile charging pile is also arranged on the base, and the baffle pushes the mobile charging pile to move in the second slide groove when the movable assembly moves. With this arrangement, the mobile charging pile can be pushed to move during the movement of the movable assembly to control the mobile charging to reach the working position of the lifting device.

[0018] According to a second aspect of the present invention, a transport vehicle for a mobile charging pile is provided, comprising a transport frame as described above, wherein the transport frame is arranged in a rear compartment of the vehicle.

[0019] According to a third aspect of the present invention, a loading and unloading method is provided, using the transport rack as described above, the method comprising:

[0020] The driving component drives the moving component to push the lifting device with the mobile charging pile to move to the outside of the base;

[0021] In response to the support mechanism on the lifting device leaving the slide groove to reach a predetermined distance, the driving assembly stops operating, and drives the bottom wheel set of the support mechanism to extend and contact the ground, and then the driving assembly continues to operate until the lifting device is completely separated from the base, and the lifting device lowers the mobile charging pile, completing the unloading of the mobile charging pile;

[0022] The lifting device lifts the mobile charging pile, and the driving component drives the mobile component to reset. In response to the support mechanism on the lifting device returning to a predetermined distance, the driving component stops operating, and after driving the bottom wheel group of the support mechanism to reset, the driving component continues to operate until the lifting device completely returns to the base, completing the loading of the mobile charging pile.

[0023] Preferably, the predetermined distance satisfies that the center of gravity of the lifting device is within the supporting range of the base.

[0024] The present invention proposes a transport frame for mobile charging piles, which is a fixed frame constructed by a fixed plate and a guide rod, so that a mobile assembly consisting of a mobile plate, a driving rod and a sliding rod can move on the fixed frame, thereby driving a lifting device to extend or retract, and further utilizing the wheel set below the lifting device, through the cooperation of a supporting mechanism, so that the transport frame always keeps the center of gravity of the lifting device within the support range of the transport frame during loading and unloading, thereby avoiding the problem that the cantilever structure formed by the lifting device during movement may cause permanent deformation of each rod in the frame, resulting in the transport frame being unable to operate normally. At the same time, the modular structure and cooperation method of each component can also facilitate manufacturing, installation or maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0026] Figure 1 This is an overall structural diagram of a transport rack for a mobile charging pile according to an embodiment of the present invention;

[0027] Figure 2 It is a structural schematic diagram of a main frame of a transport rack for a mobile charging pile according to a specific embodiment of the present invention;

[0028] Figure 3 It is a structural schematic diagram of a lifting device for a transport frame of a mobile charging pile according to a specific embodiment of the present invention;

[0029] Figure 4 A schematic diagram of the structure of a transport vehicle according to an embodiment of the present invention;

[0030] Figure 5 is a flow chart of a loading and unloading method according to one embodiment of the present invention;

[0031] Figure 6a -d is a schematic diagram of the loading and unloading process according to a specific embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical scheme and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. 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.

[0033] Figure 1 The overall structure of the transport frame for the mobile charging pile according to an embodiment of the present invention is shown as follows: Figure 1 As shown, the transport rack for the mobile charging pile includes a base 100, a fixed frame 200, a moving component 300, a lifting device 400 and a supporting mechanism 500, wherein the fixed frame 200 and the lifting device 400 are arranged in parallel on the base 100, the fixed frame 200 is fixed on the base 100, the moving component 300 is slidably arranged on the fixed frame 200, and is connected to the lifting device 400, thereby pushing the lifting device 400 to move in the horizontal direction, and the supporting mechanism 500 is arranged at one end of the lifting device 400, and is used to form a support with the ground when the lifting device 400 is partially moved out of the base 100, so as to avoid deformation of the overall frame due to the force of the lifting device 400 on the moving component 300 and the fixed frame 200 under its own weight or when lifting the mobile charging pile, thereby affecting the service life of the transport rack.

[0034] Continue to refer Figure 2 , Figure 2 A schematic diagram of the structure of the main frame of a transport rack for a mobile charging pile according to a specific embodiment of the present invention is shown. Figure 2 As shown, the main frame includes a fixed frame 200 fixed on a base 100 and a mobile component 300 movably arranged on the fixed frame 200. Two pairs of slide grooves are arranged in parallel on the base 100, which serve as running tracks for the wheel groups at the bottom of the mobile charging pile and the lifting device 400 respectively. The fixed frame 200 includes two pairs of fixed plates 210 fixed on the base 100 and two guide rods 220 arranged in parallel between the two fixed plates 210 and 210' on the same side. The two fixed plates 210 and 210' at one end of the base 100 are connected by a connecting plate to set a first drive component and form a fixed frame structure. The first drive component includes a first motor 230, a first steering mechanism 240 and a first reducer 250. The first motor 230 transmits power to the first reducers 250 on both sides through the first steering mechanism 240.

[0035] In a specific embodiment, the moving assembly 200 includes a moving plate 310, a driving rod 320 and a sliding rod 330 arranged on the two sides corresponding to the fixed plate 210, wherein the moving plate 310 is provided with a guide hole for cooperating with the guide rod 220, the moving plate 310 is displaceably arranged on the guide rod 220 between the two fixed plates 210 and 210', the middle part of the moving plate 310 is fixedly provided with a driving rod 320, and two sliding rods 330 are symmetrically arranged above and below the driving rod 320 on the moving plate 310, passing through the other end fixed plate 210' and extending to the outside of the fixed frame 200, so as to form a planar displacement structure to maintain the stability of the moving assembly. The driving rod 320 and the sliding rod 330 extending to the outside of the fixed frame 200 are fixedly matched with the lifting device and displaced synchronously with the moving assembly.

[0036] In a specific embodiment, the first driving component adopts a screw transmission method, and the screw is driven to rotate through the first reducer 250. The screw passes through the fixed plate 210 and the movable plate 310 and extends to the interior of the driving rod 330. A screw nut is fixedly provided on the head of the driving rod 330. The driving rod 330 is driven by the screw to move back and forth, driving the movable component 300 and then driving the displacement of the lifting device 400.

[0037] In a specific embodiment, the fixed plate 210 and the movable plate 310 have the same structure and the holes opened thereon are consistent, wherein the upper and lower ends are used to fix the guide rod, the middle is used to fix or pass the sliding rod or the driving rod, and holes are reserved for forklift transportation and loading and unloading. This arrangement facilitates integrated processing, reduces production costs, and improves the replaceability of the overall structure.

[0038] In a specific embodiment, the driving rod 330, the guide rod 220 and the sliding rod 330 are all matched with the fixed plate 210 or the movable plate 310 through a sleeve. One end of the sleeve has a radial extension to facilitate passing through the fixed plate 210 or the movable plate 310 for fixation. In a preferred embodiment, the lead screw nut is fixed on the sleeve to realize the drive of the movable component by the lead screw.

[0039] In a specific embodiment, the driving rod 330, the guide rod 220 and the sliding rod 330 have the same structure, which are all hollow structures. The hollow structure of the driving rod 330 can be used to accommodate the screw rod, and the hollow structures of the guide rod 220 and the sliding rod 330 can be used to pass the control line, thereby reducing the exposure of the line to the outside that affects the operation of the transport frame, while also reducing the weight of the overall frame, making production and maintenance easier.

[0040] Figure 3 FIG. 1 shows a structural schematic diagram of a lifting device for a transport frame of a mobile charging pile according to a specific embodiment of the present invention. Figure 3As shown, the lifting device includes a lifting frame 410, and a second driving assembly is arranged on the top of the lifting frame 410. The second driving assembly includes a second motor 420, a second steering mechanism 430, and a second reducer 440. The second motor 420 transmits power to the second reducers 440 on both sides through the second steering mechanism 430. The second reducer 440 drives the screw 450 to rotate, driving the hanger 460 provided with a screw nut to move up and down. Two pairs of guide rods 470 are respectively arranged at both ends of the hanger 460 to ensure the stability of the hanger 460 during the lifting process. A pair of hooks 461 are arranged on the hanger 460, and the hooks 461 are adjustably arranged in the slide groove on the hanger 460 to achieve the fixation of the mobile charging pile.

[0041] In a specific embodiment, a hole that cooperates with the driving rod 330 and the sliding rod 330 is opened on one side of the lifting frame 410 adjacent to the fixed frame 200. The driving rod 330 and the sliding rod 330 pass through the hole to the other end of the lifting frame 410 and are fixed together by a clamp 411 to ensure that the driving rod 330 and the sliding rod 330 can drive the lifting device 400 to move, thereby facilitating the loading, unloading and maintenance of the lifting device 400.

[0042] In a specific embodiment, the support mechanism 500 is arranged on both sides of one end of the lifting device 400 away from the fixed frame, and is controlled by two sets of driving components arranged on the lifting frame 410, including a third motor and a third reducer. The third reducer controls the bottom of the support leg inside the support mechanism 500 through a screw rod until the bottom wheel group 510 contacts the ground and triggers the internal sensor to stop.

[0043] It should be recognized that the first drive assembly, the second drive assembly and the third drive assembly can be driven by other means besides screw drive, such as hydraulic or pneumatic drive, or use an electric push rod, which can also achieve the technical effects of the present invention.

[0044] In a specific embodiment, at least one pair of wheel groups 490 are provided at the bottom of the lifting frame 410, and the center of the lifting device 400 is located between the horizontal distance between the pair of wheel groups and the wheel group 510. This arrangement can facilitate the control of the center of gravity of the lifting device, ensuring that the lifting device 400 is supported by at least one pair of wheel groups and the base 100 during the movement during the loading and unloading process, thereby preventing the frame from being deformed by force.

[0045] In a specific embodiment, a baffle is detachably provided between the connecting plates 310 on both sides, which is used to withdraw the mobile charging pile in the fixed frame 200 to the bottom of the lifting device 400 when the mobile assembly moves. A baffle is also detachably provided at one end of the lifting frame 410, and the mobile charging pile can be pushed back into the fixed frame 200 when the lifting device 400 is retracted, so as to realize the loading and unloading tasks of multiple piles. A plurality of guide wheels 480 are provided on both inner sides of the bottom of the lifting frame 410 to facilitate the positioning of the mobile charging pile and prevent the mobile charging pile from shaking during the lifting process.

[0046] In a specific embodiment, the transport rack is provided with a control module, which is used to control the first drive assembly to push the lifting device 400 to move, stop the operation of the first drive assembly when the wheel group of the support mechanism leaves the slide slot for a predetermined distance, and then drive the third drive assembly to control the support mechanism 500 to extend and contact the ground, and then continue to control the operation of the first drive assembly until the lifting device 400 is completely separated from the base 100; or control the first drive assembly to retract the lifting device 400, stop the first drive assembly after the wheel group 510 of the extended legs of the support mechanism 500 returns to a predetermined distance from the slide slot, and then drive the legs of the support mechanism 500 to retract and reset, and continue to control the operation of the first drive assembly until the lifting device 400 returns to the base 100. The above-mentioned predetermined distance satisfies that when the center of gravity of the lifting device 400 is within the support range of the base 100, and the lifting frame wheel group 490 and the leg wheel group 510 exert force in turn, so as to avoid the bending moment generated by the cantilever structure causing permanent deformation of the frame and affecting the service life of the transport rack.

[0047] Figure 4 FIG. 2 shows a schematic diagram of a loading and unloading process according to a specific embodiment of the present invention. Figure 4 As shown, the transport vehicle includes the above-mentioned transport frame for mobile charging piles, the transport frame is placed at the rear of the vehicle, and the lifting device 400 is located between the front and rear wheels, the base 100 is fixed on the frame, and the top of the fixed frame 200 is fixed to the roof to increase the stability of the overall structure, the moving component 300 can push the lifting device 400 to move out of the vehicle body, and the supporting mechanism 500 can extend the legs to the bottom wheel group to abut against the ground. The transport vehicle carries multiple mobile charging piles, and the mobile charging piles are arranged on the base 100 of the transport frame.

[0048] Figure 5 A flow chart of a loading and unloading method according to an embodiment of the present invention is shown. Figure 1-3 The loading and unloading of mobile charging piles on the transport rack includes the following steps:

[0049] S201: The driving component drives the moving component to push the lifting device with the mobile charging pile to move to the outside of the base.

[0050] S202: In response to the support mechanism on the lifting device leaving the slide groove to reach a predetermined distance, the driving assembly stops operating, and drives the bottom wheel group of the support mechanism to extend and contact the ground, and then the driving assembly continues to operate until the lifting device is completely separated from the base, and the lifting device lowers the mobile charging pile to complete the unloading of the mobile charging pile. In this process, since the center of gravity of the lifting device is within the support range of the base, after the support mechanism is lowered, the frame will not be pressed when the lifting device continues to move outward due to the support of the support mechanism, thereby increasing the service life of the transport rack.

[0051] S203: The lifting device lifts the mobile charging pile, and the driving component drives the mobile component to reset. In response to the support mechanism on the lifting device returning to the predetermined distance, the driving component stops operating, and after driving the bottom wheel group of the support mechanism to reset, the driving component continues to operate until the lifting device is completely returned to the base, completing the loading of the mobile charging pile. During the recycling process, the support mechanism is retracted in advance when returning to the predetermined distance, which can avoid damage to the transport frame caused by the collision between the support mechanism and the base during recycling, and can also rely on the support of the base to avoid the influence of the deadweight of the lifting device on the frame.

[0052] Continue to refer Figure 6a -d, which shows a schematic diagram of the loading and unloading process according to a specific embodiment of the present invention, Figure 6a The initial state diagram is shown in FIG. 1 , where the lifting device 400 is located inside the base 100, and the driving moving assembly 300 pushes the lifting device 400 to move outward. Figure 6b In the position shown, the wheel group at the bottom of the lifting device 400 is still within the support range of the base 100. Preferably, this position corresponds to the rear wheel position of the transport vehicle. At this time, the lifting device 400 relies on the wheel group to form support. On the one hand, it prevents the lifting device from being suspended in the air, causing the mobile component 300 to exert a huge force on the fixed frame 200, causing the frame to deform and causing the transport frame to fail to work normally. On the other hand, it also ensures that the center of gravity of the lifting device 400 is located near the rear wheel to prevent the front of the vehicle from tilting due to the leverage effect. At this time, the legs of the support mechanism 500 extend out and abut against the ground to form a support, as shown in FIG. Figure 6c As shown, the moving assembly 300 is continuously driven until the lifting device 400 is completely extended out of the base 100, as shown in FIG. Figure 6d At this time, the support formed by the support mechanism 500 can ensure the force of the entire frame, and the lifting device can lower the mobile charging pile to complete the unloading of the mobile charging pile. Figure 6c position, form support, and retract the support mechanism 500 again, such as Figure 6b , and then continue to drive the moving assembly 300 to completely retract the lifting device 400 into the base 100. Figure 6a , complete the recycling of mobile charging piles.

[0053] In order to solve the stress problem of the transport frame of the existing mobile charging pile, which causes the deformation of the frame and permanent damage to the entire transport frame, the present application proposes a main frame formed by guide rods and fixed plates, and a moving assembly formed by connecting plates, drive rods and sliding rods, so as to drive the lifting device to move back and forth, and further use the center of gravity of the lifting device to control the linkage between the moving assembly and the supporting mechanism, so as to achieve the stability of the overall frame during the loading and unloading process, avoid deformation of the frame, and increase the service life of the transport frame. At the same time, the modular setting of each component can be uniformly produced and manufactured, and the precision control is more accurate, thereby further improving the stability of the transport frame during the loading and unloading process.

[0054] Although the above describes the specific implementation mode of the present invention in conjunction with the accompanying drawings, it is not intended to limit the scope of protection of the present invention. Those skilled in the art should understand that various modifications or variations that can be made by those skilled in the art on the basis of the technical solution of the present invention without creative work are still within the scope of protection of the present invention.

Claims

1. A transport rack for a mobile charging pile, characterized in that: include: A base, wherein at least one pair of slide grooves is provided on the base; A telescopic frame, comprising a fixed frame, a moving assembly and a driving assembly, wherein the fixed frame is arranged at one end of the base, the fixed frame comprises fixed plates arranged at both ends and a guide rod arranged between the fixed plates, the moving assembly is displaceably sleeved on the guide rod, the moving assembly comprises a moving plate movably sleeved on the guide rod and a driving rod arranged on the moving plate, the driving rod passes through the fixed plate and extends to the other end of the base, and the driving assembly drives the driving rod to cause the moving assembly to displace on the guide rod; A lifting device is arranged at the other end of the base adjacent to the telescopic frame and is fixedly connected to the driving rod. At least two pairs of wheels are arranged at the bottom of the lifting device, and the wheels cooperate with the slide groove. A telescopic supporting mechanism is arranged on the lifting device, and a wheel set is arranged at the bottom of the supporting mechanism; The control module is further included, wherein the control module is used to control the driving assembly to stop operating after the wheel group of the supporting mechanism leaves the slide groove by a predetermined distance, and continue to control the driving assembly to operate until the lifting device is completely separated from the base after the supporting mechanism is extended and contacts the ground; or control the driving assembly to stop after the wheel group of the supporting mechanism returns to a predetermined distance from the slide groove, and continue to control the driving assembly to operate until the lifting device returns to the base after the supporting mechanism is reset; The moving assembly also includes a sliding rod arranged parallel to the driving rod, one end of the sliding rod is fixed to the moving plate, and the other end passes through the fixed plate and is fixedly connected to the lifting device. The guide rod, the sliding rod and the driving rod cooperate with the fixed plate or the moving plate through a plurality of sleeves. The guide rod is fixedly arranged on the fixed plate through a sleeve, one end of the sliding rod and the driving rod is fixedly arranged on the moving plate through a sleeve, and the other end can slidably pass through a sleeve arranged on the fixed plate, the driving rod and the sliding rod pass through one end of the lifting device, extend to the other end of the lifting device, and are fixedly matched by clamps fixed at both ends of the lifting device.

2. The transport rack for mobile charging pile according to claim 1, characterized in that: The guide rod, the slide rod and the drive rod are all hollow structures.

3. The transport rack for mobile charging pile according to claim 2, characterized in that: The driving assembly includes a motor and a screw, the motor is fixedly arranged on the fixed frame, the screw passes through the fixed plate and the movable plate and extends to the inside of the driving rod, and a screw nut cooperating with the screw is fixedly arranged on the sleeve to which the driving rod is fixed.

4. The transport rack for a mobile charging pile according to claim 1, characterized in that: A baffle is detachably arranged between the movable plates on both sides and between the two fixed plates on one side of the lifting device. A second slide groove that cooperates with the bottom roller of the mobile charging pile is also arranged on the base. The baffle pushes the mobile charging pile to move in the second slide groove when the movable component moves.

5. A transport vehicle for a mobile charging pile, characterized in that: It comprises the transport rack as claimed in any one of claims 1 to 4, wherein the transport rack is arranged in the rear compartment of the vehicle.

6. A loading and unloading method, characterized in that: Using the transport rack according to any one of claims 1 to 4, the method comprises: The driving component drives the moving component to push the lifting device with the mobile charging pile to move to the outside of the base; In response to the support mechanism on the lifting device leaving the slide groove to reach a predetermined distance, the driving assembly stops operating, and drives the bottom wheel set of the support mechanism to extend and contact the ground, and then the driving assembly continues to operate until the lifting device is completely separated from the base, and the lifting device puts down the mobile charging pile, completing the unloading of the mobile charging pile; The lifting device lifts the mobile charging pile, and the driving component drives the mobile component to reset. In response to the support mechanism on the lifting device returning to a predetermined distance, the driving component stops operating, and after driving the bottom wheel group of the support mechanism to reset, the driving component continues to operate until the lifting device completely returns to the base, completing the loading of the mobile charging pile.

7. A loading and unloading method according to claim 6, characterized in that: The predetermined distance satisfies that the center of gravity of the lifting device is located within the supporting range of the base.

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