Pantograph device and electric vehicle

Abstract

The application provides a pantograph device and an electric vehicle, which comprises a mounting seat, a first driving assembly, a support, a second driving assembly, a first current collector and a second current collector; the mounting seat is used for being mounted on the top of the vehicle; the first driving assembly is arranged on the mounting seat and connected with the support, and is used for driving the support to lift and fall; the second driving assembly is arranged on the support and connected with the first current collector and the second current collector, and is used for driving the first current collector and the second current collector to switch between an unfolded state and a folded state; in the unfolded state, the first current collector and the second current collector are unfolded in the length direction; in the folded state, the first current collector and the second current collector are overlapped with each other. The pantograph device and the electric vehicle can realize stable and reliable contact with the overhead power supply line, and solve the problem of high cost of the existing electric vehicle pantograph device.

Description

Technical Field

[0001] This invention relates to the field of electric vehicle technology, and more particularly to a pantograph device and an electric vehicle. Background Technology

[0002] To address the range anxiety issue of electric vehicles with fixed routes, these vehicles are typically equipped with a pantograph mounted on the top of the vehicle. The pantograph is used to make real-time contact with the overhead power line to transfer electrical energy to power the vehicle.

[0003] However, in the field of trolleybuses, the tracking behavior of vehicles is unpredictable. Even when the vehicle is traveling within the lane, its lateral displacement is uncertain and depends entirely on the driver's driving behavior and road conditions.

[0004] In order to ensure that its pantograph can maintain good contact with the overhead power line at all times, a trolleybus in the prior art is equipped with a drive mechanism for driving the pantograph to move laterally (perpendicular to the longitudinal direction of the vehicle). The drive mechanism drives the pantograph to move laterally, compensating for the position of the vehicle, so that the effective working area of ​​the pantograph is always below the overhead power line when the vehicle moves laterally, thus maintaining a continuous and stable power supply.

[0005] However, this technical solution requires precise control and positioning of the pantograph's lateral movement. Precise control and positioning of the pantograph first relies on accurate detection of the relative position between the pantograph and the overhead power line. Currently, both vehicle-mounted laser sensors and high-performance computing platforms require significant procurement and maintenance costs. Secondly, as vehicle speed increases, even very small vehicle yaw angles can cause rapid changes in the pantograph's lateral position relative to the overhead power line, posing a significant challenge to controlling the pantograph's lateral movement.

[0006] Therefore, how to solve the problem of high cost of existing pantograph devices for electric vehicles while ensuring stable and reliable contact between the pantograph and the overhead power line when the vehicle is subject to lateral displacement has become an important technical problem for those skilled in the art. Summary of the Invention

[0007] This invention provides a pantograph device and an electric vehicle that can achieve stable and reliable contact with overhead power lines while solving the problem of high cost of existing pantograph devices for electric vehicles.

[0008] A first aspect of the present invention provides a pantograph device, comprising a mounting base, a first drive assembly, a bracket, a second drive assembly, a first receiver, and a second receiver; wherein,

[0009] The mounting bracket is for mounting on the top of the vehicle;

[0010] The first drive component is disposed on the mounting base and is connected to the bracket for driving the bracket to rise and fall;

[0011] The second drive assembly is mounted on the bracket and connected to the first pantograph and the second power receiver, for driving the first power receiver and the second power receiver to switch between an unfolded state and a folded state.

[0012] In the unfolded state, the first and second power-receiving bodies are unfolded relative to each other in their length direction; in the folded state, the first and second power-receiving bodies overlap each other.

[0013] According to the pantograph device provided by the present invention, the second drive assembly includes:

[0014] A rotary drive device is mounted on the bracket;

[0015] The first swing arm has a first end connected to the output shaft of the rotary drive device, and a second end hinged to the first or second power receiver.

[0016] The bearing is mounted on the bracket;

[0017] The second swing arm has its first end connected to the bearing via a rotating shaft, and its second end hinged to either the first or second power receiving body.

[0018] According to the pantograph device provided by the present invention, the second driving component is configured in two groups, and is arranged in a one-to-one correspondence with the first power receiver and the second power receiver, so as to drive the first power receiver and the second power receiver to translate and swing through the two groups of the second driving components respectively.

[0019] According to the pantograph device provided by the present invention, the first power receiving body and the second power receiving body are arranged in parallel and respectively on opposite sides of the bracket.

[0020] According to the pantograph device provided by the present invention, the support is configured as a rod-shaped structure;

[0021] Both the rotary drive device and the bearing are connected to the bracket via a mounting frame.

[0022] According to the pantograph device provided by the present invention, the second drive assembly includes:

[0023] A linear drive device is mounted on the bracket, and the drive end of the linear drive device is connected to the first or second power receiving body, so that the linear drive device drives the first or second power receiving body to move along its length direction.

[0024] According to the pantograph device provided by the present invention, two second driving components are provided, and each corresponds to one of the first and second power receiving bodies, so that the first and second power receiving bodies can be driven to translate along their length direction by the two sets of second driving components respectively.

[0025] According to the pantograph device provided by the present invention, a sliding seat assembly is provided between the first power receiving body and the second power receiving body and the bracket. The sliding seat assembly is slidably engaged with the bracket, and the sliding direction is consistent with the length direction of the first power receiving body and the second power receiving body.

[0026] According to the pantograph device provided by the present invention, the bracket is configured as a light rod structure, the sliding seat assembly is provided with a light hole that cooperates with the light rod structure, and the sliding seat assembly is sleeved on the outer periphery of the light rod structure through the light hole.

[0027] The pantograph device provided by the present invention further includes a locking mechanism disposed on the bracket, the locking mechanism being used to lock the first power receiver or the second power receiver in the folded state or the unfolded state.

[0028] A second aspect of the invention provides an electric vehicle including a pantograph as described in any of the preceding claims.

[0029] In the technical solution provided by this invention, the pantograph device can be mounted on the top of a vehicle via a mounting base. A first drive assembly drives the bracket, the first power receiver, and the second power receiver to rise or fall, allowing the first and second power receivers to make or break contact with the overhead power line. Both the first and second power receivers are mounted on the bracket, and the first and second power receivers can switch between a folded state and an unfolded state under the drive of the second drive assembly. In the unfolded state, the first and second power receivers unfold relative to each other along their length, that is, along the width direction of the vehicle (perpendicular to the vehicle's longitudinal direction). After unfolding, the overall length of the first and second power receivers is relatively large, providing a significant span in the vehicle's width direction. Therefore, even if the vehicle moves laterally, stable contact between the first and second power receivers and the overhead power line can still be maintained. When not in use, the second drive component can drive the first and second power receivers to switch to a folded state, causing them to overlap and thus have a shorter length in the vehicle width direction. This ensures that the first and second power receivers are within the vehicle's width range, preventing them from extending out of the vehicle and interfering with its movement. With this configuration, the pantograph device provided by this invention does not require precise positioning and displacement control of the pantograph, and can maintain stable contact with the overhead power line even when the vehicle experiences lateral displacement, effectively reducing costs. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in this invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the overall structure of the electric vehicle when the pantograph device is in the working state (deployed state) in an embodiment of the present invention;

[0032] Figure 2 This is a schematic diagram of the pantograph device in the working state (deployed state) in an embodiment of the present invention;

[0033] Figure 3 This is a schematic diagram of the overall structure of the electric vehicle when the pantograph device is in a non-working state (folded state) in an embodiment of the present invention;

[0034] Figure 4 This is a schematic diagram of the pantograph device in the non-working state (folded state) in an embodiment of the present invention;

[0035] Figure 5 This is a partial schematic diagram of the pantograph device in the working state (deployed state) in one embodiment of the present invention;

[0036] Figure 6 This is a partial schematic diagram of the pantograph device in a non-working state (folded state) in one embodiment of the present invention;

[0037] Figure 7 This is a schematic diagram of the locking mechanism in one embodiment of the present invention;

[0038] Figure 8 This is a partial schematic diagram of the pantograph device in the working state (deployed state) in another embodiment of the present invention;

[0039] Figure 9 This is a partial schematic diagram of the pantograph device in a non-working state (folded state) in another embodiment of the present invention;

[0040] Figure 10 This is a schematic diagram of the locking mechanism in another embodiment of the present invention.

[0041] Figure label:

[0042] 1. Electric vehicle; 2. Overhead power line; 3. Pantograph device; 31. Mounting base; 32. Pull rod; 33. Lower arm; 34. Upper arm; 351. First power receiver; 352. Second power receiver; 353. Rotary drive device; 354. First swing arm; 355. Second swing arm; 356. Bearing; 357. Bracket; 358. Insulating material; 359. Locking mechanism; 360. Mounting bracket; 3591. Linear drive component; 3592. Locking pin; 3593. Frame; 3594. Drive mechanism; 3595. Locking hook; 370. Sliding seat assembly; 371. Smooth rod structure; 372. Insulator device; 373. Linear drive device; 374. Spring cylinder. Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0044] The following is combined Figures 1 to 10 The pantograph device 3 and electric vehicle 1 in the embodiments of the present invention are described. The pantograph device 3 includes a mounting base 31, a first drive assembly, a bracket 357, a second drive assembly, a first power receiver 351, and a second power receiver 352.

[0045] The mounting base 31 is used for mounting on the top of the vehicle. In some embodiments, the mounting base 31 can be a frame-shaped structure, such as a cuboid frame, which can be connected to the top of the vehicle by bolts, pins, snap-fit ​​structures, etc.

[0046] The first drive assembly is mounted on the mounting base 31 and connected to the bracket 357, and is used to drive the bracket 357 to rise and fall. By driving the bracket 357 to rise and fall through the first drive assembly, the first power receiving body 351 and the second power receiving body 352 on the bracket 357 can be simultaneously raised and lowered to achieve contact or disconnection with the overhead power supply line 2.

[0047] The second drive assembly is mounted on the bracket 357 and is connected to the first power receiver 351 and the second power receiver 352. It is used to drive the first power receiver 351 and the second power receiver 352 to switch between an unfolded state and a folded state. In the unfolded state, the first power receiver 351 and the second power receiver 352 are unfolded relative to each other in their length direction. In the folded state, the first power receiver 351 and the second power receiver 352 overlap each other.

[0048] It should be noted that when the first power receiver 351 and the second power receiver 352 are deployed relative to each other along their length, they function as a single unit. This unit is relatively long, potentially exceeding the width of the vehicle or approaching the width of the road. Taking a semi-trailer vehicle as specified in GB1589 traveling in a lane with a width of 3750mm as specified in JTG B01 as an example, the maximum width of the vehicle is 2550mm, and the overall length of the pantograph device is preferably between 3000mm and 3200mm. The maximum lateral movement distance of the vehicle within the lane is ±600mm. Therefore, the effective working lengths of the first and second power receivers should each be greater than 1200mm to ensure contact with the overhead power line 2.

[0049] In operation, the first drive assembly raises the first pantograph 351 and the second pantograph 352 to a height sufficient to contact the overhead power line 2, and the second drive assembly drives the first pantograph 351 and the second pantograph 352 to unfold relative to each other. With this configuration, even if the vehicle experiences lateral displacement during travel, the large span of the first pantograph 351 and the second pantograph 352 along the vehicle's width ensures good contact with the overhead power line 2. Compared to existing technologies that use a pantograph for lateral movement, this solution eliminates the need for precise pantograph positioning and displacement control, ensuring stable contact with the overhead power line 2 even with lateral vehicle displacement, effectively reducing costs.

[0050] Furthermore, in the non-use state, the pantograph device 3 provided in this embodiment has the first receiving element 351 and the second receiving element 352 in a folded state. That is, the projections of the first receiving element 351 and the second receiving element 352 along the longitudinal direction of the vehicle overlap each other. When in the folded state, the two act as a single unit, and the length of this unit is relatively short, even equal to the length of a single receiving element, and less than the width of the vehicle. With this configuration, when the pantograph device 3 is not in use, the first drive assembly can drive the pantograph device 3 to descend and disengage from the overhead power line 2, and the second drive assembly can drive the first receiving element 351 and the second receiving element 352 to be in the folded state. Since the overall length of the first receiving element 351 and the second receiving element 352 in the folded state is less than the width of the vehicle body, the pantograph device 3 can be prevented from extending outside the vehicle, thus avoiding interference with vehicle movement or other safety hazards.

[0051] In some embodiments, the first drive assembly may include an upper arm 34, a lower arm 33, and a pull rod 32, wherein both the upper arm 34 and the lower arm 33 may be configured as frame structures. A first end of the lower arm 33 is hinged to a mounting base 31, and a second end is hinged to a first end of the upper arm 34. A first end of the pull rod 32 is hinged to the mounting base 31, and a second end is hinged to a support at the first end of the upper arm 34. The hinge positions of the pull rod 32 and the lower arm 33 to the upper arm 34 are different; for details, please refer to... Figure 2 The bracket 357, equipped with a first power receiver 351 and a second power receiver 352, can rise and fall under the drive of the first drive assembly.

[0052] In some embodiments, the second driving assembly can achieve folding and unfolding by driving the first power receiving body 351 and the second power receiving body 352 to swing. Specifically, the second driving assembly may include a rotary driving device 353, a first swing arm 354, a bearing 356, and a second swing arm 355. The rotary driving device 353 is mounted on a bracket 357. The first end of the first swing arm 354 is connected to the output shaft of the rotary driving device 353, and the second end is hinged to the first power receiving body 351 or the second power receiving body 352. The rotary driving device 353 drives the first swing arm 354 to rotate around axis A1. The bearing 356 is mounted on the bracket 357. The first end of the second swing arm 355 is connected to the bearing 356 via a rotating shaft, and the second end is hinged to the first power receiving body 351 or the second power receiving body 352. The second swing arm 355 can rotate around axis A2 of the bearing 356, and axis A2 is parallel to axis A1. Figure 5 As shown.

[0053] The rotary drive device 353 can be a pneumatic motor, hydraulic motor or electric motor, etc. Its output shaft is fixedly connected to the first swing arm 354. When the rotary drive device 353 drives the first swing arm 354 to swing, the first swing arm 354 drives the first power receiving body 351 or the second power receiving body 352 to swing. To ensure that the first power receiver 351 or the second power receiver 352 maintains a fixed trajectory for translation, the first power receiver 351 or the second power receiver 352 is hinged to a second swing arm 355. The other end of the second swing arm 355 is engaged with a bearing 356 on the bracket 357. With this configuration, when the rotary drive device 353 drives the first swing arm 354 to swing, causing the first power receiver 351 or the second power receiver 352 to swing, the second swing arm 355 swings along with the swing of the first power receiver 351 or the second power receiver 352. At the same time, the second swing arm 355 constrains the swing trajectory of the first power receiver 351 or the second power receiver 352, ensuring that the first power receiver 351 or the second power receiver 352 does not experience uncontrollable rotation during the swing translation process.

[0054] In a further embodiment, the second driving components are configured in two sets, and are configured one-to-one with the first power receiver 351 and the second power receiver 352, so that the first power receiver 351 and the second power receiver 352 are translated and oscillated by the two sets of second driving components respectively. That is, one of the two sets of second driving components is used to drive the first power receiver 351 to translate and oscillate, and the other is used to drive the second power receiver 352 to translate and oscillate.

[0055] When the first power receiver 351 and the second power receiver 352 switch from a folded state to an unfolded state, the two sets of second drive components respectively drive the first power receiver 351 and the second power receiver 352 to swing and translate in directions away from each other. When the first power receiver 351 and the second power receiver 352 switch from an unfolded state to a folded state, the two sets of second drive components respectively drive the first power receiver 351 and the second power receiver 352 to swing and translate in directions closer to each other.

[0056] In some embodiments, the first power receiving body 351 and the second power receiving body 352 are arranged in parallel and respectively on opposite sides of the bracket 357, that is, the first power receiving body 351 and the second power receiving body 352 are parallel to each other when they are in a folded or unfolded state.

[0057] To save space, the aforementioned bracket 357 can be configured as a rod-shaped structure, with the rotary drive device 353 and bearing 356 both connected to the bracket 357 via a mounting bracket 360. To ensure that the first power receiver 351 and the second power receiver 352 are mutually insulated, the middle portion of the bracket 357 can be provided with insulating material 358, and an insulating component is also provided between the bracket 357 and the upper arm 34 to ensure that the first power receiver 351 and the second power receiver 352 are mutually insulated.

[0058] In this embodiment, the pantograph device 3 further includes a locking mechanism 359, which is disposed on the bracket 357. Specifically, the locking mechanism 359 can also be disposed on the bracket 357 via a mounting bracket 360. The locking mechanism 359 is used to lock the first power receiver 351 or the second power receiver 352 in the deployed state.

[0059] In this embodiment, as Figure 7 As shown, the locking mechanism 359 may include a frame 3593 mounted on a bracket 357, a linear drive 3591 mounted on the frame 3593, and a locking pin 3592 mounted on the linear drive 3591. The linear drive 3591 may be a cylinder, a hydraulic cylinder, a linear motor, etc. The locking pin 3592 is located at the drive end of the linear drive 3591. A slot structure that mates with the locking pin 3592 may be provided on the swing arm connected to the power receiving body. When the power receiving body swings to the unfolded state, the linear drive 3591 drives the locking pin 3592 to extend and insert into the slot structure on the swing arm, thereby locking the swing arm by the locking pin 3592 to prevent the power receiving body and the swing arm from shaking or swaying. When the power receiving body needs to swing from the unfolded state to the folded state, the linear drive 3591 drives the locking pin 3592 to disengage from the slot structure, thereby unlocking the swing arm and allowing the power receiving body to swing from the unfolded state to the folded state.

[0060] In the above embodiments, the second driving component switches between the folded state and the unfolded state by driving the first power receiver 351 and the second power receiver 352 to swing and translate. In another embodiment, the second driving component can also switch between the unfolded state and the folded state by driving the first power receiver 351 and the second power receiver 352 to move away from or closer to each other along a straight line.

[0061] In this embodiment, as Figure 8 As shown, the second drive assembly may include a linear drive device 373, which may be mounted on a bracket 357 via a mounting bracket 360. The drive end of the linear drive device 373 is connected to the first power receiver 351 or the second power receiver 352, so that the linear drive device 373 drives the first power receiver 351 or the second power receiver 352 to move along its length direction.

[0062] The linear drive device 373 can drive the first power receiver 351 or the second power receiver 352 to move along a straight line (the length direction of the first power receiver 351 or the second power receiver 352). The linear drive device 373 can be a cylinder, a hydraulic cylinder, a linear motor, etc.

[0063] Furthermore, there can be two second driving components, which correspond one-to-one with the first power receiver 351 and the second power receiver 352, so that the first power receiver 351 and the second power receiver 352 can be driven to translate along their length direction by the two sets of second driving components respectively.

[0064] In order to enable the first power receiving body 351 and the second power receiving body 352 to move smoothly, a sliding seat assembly 370 is provided between the first power receiving body 351 and the second power receiving body 352 and the bracket 357. The sliding seat assembly 370 slides with the bracket 357, and the sliding direction is consistent with the length direction of the first power receiving body 351 and the second power receiving body 352.

[0065] One end of the second drive assembly is fixedly connected to the bracket 357, and the other end is connected to the sliding seat assembly 370. The second drive assembly drives the sliding seat assembly 370 to slide along a straight line. When the second drive assembly drives the first power receiver 351 and the second power receiver 352 to move, the first power receiver 351 and the second power receiver 352 can be relatively unfolded or relatively overlapped. To improve stability, each power receiver can correspond to a pair of sliding seat assemblies 370, that is, each power receiver is supported by a pair of sliding seat assemblies 370, which can improve the stability of the power receiver when sliding.

[0066] In this embodiment, the aforementioned bracket 357 can be configured as a light rod structure 371, and the sliding seat assembly 370 is provided with light holes that cooperate with the light rod structure 371. The sliding seat assembly 370 is sleeved on the outer periphery of the light rod structure 371 through the light holes. Specifically, the aforementioned light rod structures 371 can be configured as a pair, with the pair of light rod structures 371 arranged parallel to each other. Each sliding seat assembly 370 is provided with a pair of light holes, and the pair of light holes cooperate one-to-one with the pair of light rod structures 371, thereby enabling the sliding seat assembly 370 to slide smoothly along the light rod structure 371.

[0067] It should be noted that, in order to achieve mutual insulation between the first power receiving body 351 and the second power receiving body 352, an insulator device 372 is provided between the sliding seat assembly 370 and the power receiving body, thereby ensuring mutual insulation between the first power receiving body 351 and the second power receiving body 352. Furthermore, it should be noted that the sliding seat assembly 370 may also include a spring cylinder 374, which is connected to the power receiving body. When the vehicle encounters undulating road sections during travel, the power receiving body is subjected to pressure from the overhead power supply line 2. At this time, the spring cylinder 374 can generate corresponding vertical elastic deformation, making the contact between the power receiving body and the overhead power supply line 2 more stable.

[0068] In a further embodiment, the pantograph device 3 further includes a locking mechanism 359, which is disposed on the bracket 357 and is used to lock the first power receiver 351 or the second power receiver 352 in a folded or unfolded state.

[0069] In some embodiments, such as Figure 10 As shown, the locking mechanism 359 may include a frame 3593 mounted on a bracket 357, a locking hook 3595 hinged to the frame 3593, and a drive mechanism 3594 for driving the locking hook 3595 to rotate around the hinge point. When the first power receiving body 351 and the second power receiving body 352 are relatively displaced to the unfolded state, the drive mechanism 3594 can drive the locking hook 3595 to rotate, so that the locking hook 3595 hooks the sliding seat assembly 370, thereby fixing the sliding seat assembly 370 in a fixed state, avoiding the problem of instability of the first power receiving body 351 or the second power receiving body 352 due to the instability of the sliding seat assembly 370 during vehicle operation.

[0070] This invention also provides an electric vehicle 1, including a pantograph device 3 as described in any of the above embodiments. The pantograph device 3 is mounted on the roof of the electric vehicle 1. When deployed, the width of the pantograph device 3 can exceed the width of the vehicle, thus ensuring reliable contact between the pantograph device 3 and the overhead power line 2 even if the vehicle moves laterally during operation. When the electric vehicle 1 is not in operation, the pantograph device 3 can be folded up so that its overall width is less than the width of the vehicle body, meaning the pantograph device 3 will not extend beyond the width of the electric vehicle 1, avoiding interference with the external environment.

[0071] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A pantograph device, characterized in that, It includes a mounting base (31), a first drive assembly, a bracket (357), a second drive assembly, a first power receiver (351), and a second power receiver (352); wherein, The bracket (357) is configured as a rod-shaped structure or a smooth rod structure (371), the middle part of the bracket (357) is configured as an insulating material, and an insulating component is provided between the bracket (357) and the upper arm (34) of the first drive assembly; The mounting bracket (31) is used for mounting on the top of the vehicle; The first drive component is disposed on the mounting base (31) and is connected to the bracket (357) for driving the bracket (357) to rise and fall; The first power receiver (351) and the second power receiver (352) are arranged in parallel and are respectively arranged on opposite sides of the bracket (357); The second driving component is disposed on the bracket (357) and connected to the first power receiver (351) and the second power receiver (352), for driving the first power receiver (351) and the second power receiver (352) to switch between an unfolded state and a folded state, wherein, In the unfolded state, the first power receiver (351) and the second power receiver (352) are unfolded relative to each other in their length direction; in the folded state, the projections of the first power receiver (351) and the second power receiver (352) along the longitudinal direction of the vehicle overlap each other, and the overall length of the overlapping first power receiver (351) and second power receiver (352) is equal to the length of the first power receiver (351) or the length of the second power receiver (352), and the overall length of the first power receiver (351) and the second power receiver (352) is less than the width of the vehicle.

2. The pantograph device according to claim 1, characterized in that, The second driving component includes: A rotary drive device (353) is mounted on the bracket (357); The first swing arm (354) has its first end connected to the output shaft of the rotary drive device (353), and its second end hinged to the first power receiver (351) or the second power receiver (352). The bearing (356) is mounted on the bracket (357); The second swing arm (355) has its first end connected to the bearing (356) via a rotating shaft, and its second end hinged to the first power receiver (351) or the second power receiver (352).

3. The pantograph device according to claim 2, characterized in that, The second driving component is configured in two groups, and is configured one-to-one with the first power receiver (351) and the second power receiver (352), so that the first power receiver (351) and the second power receiver (352) are driven to translate and swing through the two groups of the second driving component respectively.

4. The pantograph device according to claim 3, characterized in that, The rotary drive device (353) and the bearing (356) are both connected to the bracket (357) via a mounting bracket (360).

5. The pantograph device according to claim 1, characterized in that, The second driving component includes: A linear drive device (373) is disposed on the bracket (357), and the drive end of the linear drive device (373) is connected to the first power receiver (351) or the second power receiver (352) so that the linear drive device (373) drives the first power receiver (351) or the second power receiver (352) to move along its length direction.

6. The pantograph device according to claim 5, characterized in that, The second driving component is configured in two parts, and is configured one-to-one with the first power receiver (351) and the second power receiver (352), so that the first power receiver (351) and the second power receiver (352) are respectively driven to translate along their length direction by the two sets of the second driving components.

7. The pantograph device according to claim 6, characterized in that, A sliding seat assembly (370) is provided between the first power receiving body (351) and the second power receiving body (352) and the bracket (357). The sliding seat assembly (370) slides with the bracket (357), and the sliding direction is consistent with the length direction of the first power receiving body (351) and the second power receiving body (352).

8. The pantograph device according to claim 7, characterized in that, The sliding seat assembly (370) is provided with an optical hole that cooperates with the optical rod structure (371), and the sliding seat assembly (370) is sleeved on the outer periphery of the optical rod structure (371) through the optical hole.

9. The pantograph device according to claim 1, characterized in that, It also includes a locking mechanism (359), which is disposed on the bracket (357) and is used to lock the first power receiver (351) or the second power receiver (352) in the folded state or the unfolded state.

10. An electric vehicle, characterized in that, Includes the pantograph device as described in any one of claims 1-9.

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