Fixed mounting device for hinged pin and torsional spring of charging small door

Abstract

The utility model relates to a charging wicket hinge pin and torsion spring fixed installation device, which comprises a fixed installation platform arranged on a rack, the hinge pin comprises a positioning end and a free end, the torsion spring can be sleeved on the outer side of the positioning end, the outer wall of the positioning end side is provided with a positioning raised head and a spring bayonet, and the positioning raised head and the spring bayonet are matched with each other. A positioning table for bearing the positioning end and a positioning groove matched with the positioning raised head are arranged on the fixed mounting platform; the device further comprises a torsion spring shifting mechanism used for mounting a torsion spring, the torsion spring shifting mechanism comprises a shifting rod and a shifting driving cylinder, the shifting rod is rotationally arranged on the fixed mounting platform, and a cylinder body of the shifting driving cylinder is arranged on the fixed mounting platform. The device is simple in structure and convenient to operate, stable positioning of the hinge pin and the torsion spring can be achieved, automatic installation of the hinge pin and the torsion spring can be achieved, the installation efficiency and the installation quality of the hinge pin and the torsion spring of the small charging door are improved, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] This utility model relates to a mounting device for a hinge pin and torsion spring of a charging door, belonging to the technical field of charging door installation. Background Technology

[0002] Vehicles have not only improved people's quality of life but also provided convenience for travel. Under the pressure of energy and environmental protection, new energy vehicles have undoubtedly become the future direction of automobile development. For new energy vehicles, the charging port is a frequently used area. The charging port of a new energy vehicle has the function of protecting the charging port, and we use it every time we charge a new energy vehicle.

[0003] The charging door includes a housing, a cover plate, a hinge pin for hinged connection between the housing and the cover plate, and a torsion spring. The cover plate has a gooseneck, the housing has a hinge part with a hinge hole for the hinge pin to pass through, and the gooseneck has a hinge hole for the hinge pin to pass through. The gooseneck is installed at the hinge part, the hinge pin is inserted into the hinge hole, and then the torsion spring is installed to complete the assembly of the charging door.

[0004] Currently, the assembly of charging gates is mostly done manually. Manual assembly involves manually inserting hinge pins and installing torsion springs, which is labor-intensive. Furthermore, the inconsistent assembly quality due to human error can lead to improper assembly. Therefore, there is an urgent need for intelligent assembly equipment for charging gates. This intelligent assembly equipment must first consider the positioning of the hinge pins and torsion springs. Moreover, it must also consider the automated installation of the torsion springs to prepare for the automated assembly of the hinge pins and torsion springs for the charging gate. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing a mounting device for the hinge pin and torsion spring of a charging door.

[0006] The technical solution of this utility model to solve the above-mentioned technical problems is as follows: A mounting device for a hinge pin and a torsion spring of a charging door, including a mounting platform set on a frame, the hinge pin including a positioning end and a free end, the torsion spring being able to be fitted on the outside of the positioning end, the outer wall of the positioning end being provided with a positioning protrusion and a spring slot for positioning one end of the torsion spring, the mounting platform being provided with a positioning platform for supporting the positioning end and a positioning groove adapted to the positioning protrusion;

[0007] It also includes a torsion spring actuation mechanism for mounting the torsion spring, the torsion spring actuation mechanism including a lever for actuating the other end of the torsion spring and a actuation drive cylinder for driving the lever. The lever is rotatably mounted on the mounting platform, and the cylinder body of the actuation drive cylinder is mounted on the mounting platform.

[0008] The beneficial effects of this utility model are as follows: A torsion spring is fitted onto the outside of the positioning end of the hinge pin, with one end of the torsion spring inserted into the spring slot of the hinge pin. Then, the hinge pin with the torsion spring is placed on the mounting platform, with the positioning end of the hinge pin supported on the positioning platform and the positioning protrusion of the hinge pin placed in the positioning groove, thus achieving support and positioning of the hinge pin with the torsion spring. After the hinge pin and the torsion spring are positioned, the mounting platform moves closer to the positioned charging door, and the free end of the hinge pin can be inserted into the hinge hole of the charging door. When the hinge pin is inserted to the position of compressing the torsion spring, the drive cylinder is activated, and the drive lever acts on the other end of the torsion spring, compressing the torsion spring. The hinge pin continues to move closer to the charging door until the hinge pin is fully inserted into the hinge hole of the charging door. The hinge pin installation is completed, the drive cylinder is reset, and the other end of the torsion spring springs back into the spring mounting groove of the charging door housing, thus completing the torsion spring installation. This utility model has a simple structure and is easy to operate. It can not only achieve stable positioning of the hinge pin and torsion spring, but also realize the automated installation of the hinge pin and torsion spring, which improves the installation efficiency and quality of the hinge pin and torsion spring of the charging door, and reduces the labor intensity of workers.

[0009] Based on the above technical solution, the present invention can be further improved as follows.

[0010] Furthermore, the lever is mounted on the fixed mounting platform via the positioning table, the positioning table is rotatably mounted on the fixed mounting platform, the lever is mounted on the positioning table, and the positioning table is provided with a connecting arm that is hinged to the piston rod of the actuation drive cylinder.

[0011] The beneficial effect of adopting the above-mentioned further solution is that the lever can be set on the positioning platform, the positioning platform is rotatably set on the fixed mounting platform, and the lever drive cylinder is hinged to the connecting arm, so that the lever can be driven to rotate by driving the positioning platform.

[0012] Furthermore, the mounting platform is provided with a positioning seat, and the positioning table is rotatably mounted on the positioning seat.

[0013] The beneficial effect of adopting the above-mentioned further solution is that, in order to ensure the stable rotation of the positioning platform, a positioning seat can be set on the mounting platform, such as the positioning seat having an insertion hole for the positioning platform to be inserted, and the positioning platform having an insertion rod that mates with the insertion hole; or the positioning seat having a support rod, and the positioning platform being a cylindrical structure with a closed bearing end that can be fitted onto the support rod and rotated.

[0014] Furthermore, it also includes a lifting mechanism for the lifting and lowering action of the mounting platform, the mounting platform being connected to the frame via the lifting mechanism.

[0015] The beneficial effect of adopting the above-mentioned further solution is that the fixed installation platform can be set on the frame by a lifting mechanism. After the hinge pin and torsion spring are positioned, the lifting mechanism can be activated, and the fixed installation platform can carry the hinge pin and torsion spring to move towards the positioning charging door, so as to realize the automated installation of the hinge pin and torsion spring of the charging door.

[0016] Furthermore, the lifting mechanism includes a lifting electric cylinder, the piston rod of which is connected to the fixed mounting platform, and the cylinder body of which is mounted on the frame.

[0017] The advantages of adopting the above-mentioned further solutions are that the lifting mechanism can specifically use a lifting electric cylinder, which has high control precision and accuracy, can support complex motion trajectories, has low cost, and is flexible in configuration.

[0018] Furthermore, it also includes a platform guiding mechanism for guiding the lifting and lowering of the mounting platform, the platform guiding mechanism including at least two guide rods.

[0019] The beneficial effect of adopting the above-mentioned further solution is that the guide rod can be set on the fixed platform, and the frame has guide holes or guide sleeves for the lifting and lowering movement of the guide rod. The guide rod can limit and guide the lifting movement of the fixed platform, ensuring smooth lifting and lowering of the fixed platform, while also reducing the radial force on the lifting mechanism's electric cylinder and extending the service life of the lifting mechanism.

[0020] Furthermore, the mounting platform is also equipped with a pin detection sensor for detecting whether the hinge pin on the positioning table is in place.

[0021] The beneficial effect of adopting the above-mentioned further solution is that when the pin detection sensor detects the hinge pin, the hinge pin has been positioned. The pin detection sensor transmits the signal to the control system, and the control system will control the execution of subsequent actions, such as controlling the lifting mechanism to lift, so as to realize the automated installation of the hinge pin and torsion spring with the charging door.

[0022] Furthermore, the mounting platform is also equipped with a spring detection sensor for detecting whether the torsion spring on the hinge pin is properly fitted.

[0023] The beneficial effect of adopting the above-mentioned further solution is that, to ensure whether the torsion spring on the hinge pin is properly installed, a spring detection sensor can be set up. Once the torsion spring is detected, it indicates that the torsion spring has been positioned correctly. The spring detection sensor will transmit a signal to the control system, which will then control the execution of subsequent actions, such as controlling the lifting mechanism to lift and assemble the hinge pin and torsion spring with the charging door. The positioning of the hinge pin and torsion spring can be detected by setting either a separate pin detection sensor or a spring detection sensor. Alternatively, both pin detection sensors and spring detection sensors can be set simultaneously to more accurately ensure the positioning of the hinge pin and torsion spring.

[0024] Furthermore, the hinge hole of the charging door is pre-installed with a guide shaft, and also includes a pin constraint mechanism for constraining the free end of the hinge pin when the hinge pin is connected to the guide shaft. The pin constraint mechanism is mounted on the frame.

[0025] The beneficial effect of adopting the above-mentioned further solution is that, during the actual assembly of the charging door, in order to ensure that the hinge pin can be accurately inserted into the hinge hole of the charging door, a guide shaft is pre-installed in the hinge hole of the charging door. In this way, during the assembly of the hinge pin, as long as the positioning and alignment of the hinge pin are ensured to be accurate, as the hinge pin approaches the charging door, the free end of the hinge pin will align with the pre-installed guide shaft. Then, the guide shaft is pushed out to complete the installation of the hinge pin of the charging door. Since the guide shaft will exert force on the free end of the hinge pin during the alignment process, there may be a problem that affects the positioning stability of the hinge pin. Therefore, a pin constraint mechanism is set up. At the same time as the hinge pin aligns with the guide shaft, the pin constraint mechanism can act to constrain the part of the hinge pin near the free end. In this way, the hinge pin will not be affected by the positioning instability caused by the received force, thus solving the problem of the impact of the hinge pin on the stability of the hinge pin when aligning with the guide shaft, thereby meeting the requirements of the assembly stability and assembly quality of the hinge pin.

[0026] Furthermore, the pin constraint mechanism includes a pair of constraint clamps and a constraint cylinder for driving the pair of constraint clamps to clamp or release. When the pair of constraint clamps clamp, they can form a constraint hole for the free end of the hinge pin to pass through.

[0027] The beneficial effect of adopting the above-mentioned further solution is that the pin constraint mechanism is a pair of constraint clamps. When the free end of the hinge pin approaches the guide shaft, the constraint clamps can hold it under the action of the constraint cylinder to form a constraint hole for the hinge pin to pass through. As the free end of the hinge pin passes through the constraint hole and then docks with the guide shaft, the constraint hole can constrain the hinge pin. This ensures the stability and positioning accuracy of the hinge pin when docking with the guide shaft, avoids the problem of inaccurate positioning of the hinge pin due to docking with the guide shaft, and ensures the stable and accurate assembly of the hinge pin and torsion spring on the charging door.

[0028] Furthermore, it also includes an adjusting cylinder for adjusting the position of the pin restraint mechanism, the pin restraint mechanism being connected to the frame via the adjusting cylinder.

[0029] The beneficial effect of adopting the above-mentioned further solution is that the pin constraint mechanism must not only solve the problem of stable positioning when the articulated pin is connected, but also not hinder the assembly of the articulated pin. Therefore, the position of the pin constraint mechanism is designed to be adjustable. When needed, the pin constraint mechanism can move to the pin constraint working position. After the articulated pin is connected with the guide shaft, the pin constraint mechanism can be withdrawn from the pin constraint working position in time, and the articulated pin can continue to be installed until the guide shaft is pushed out to complete the assembly of the articulated pin and the torsion spring. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the main structure of Embodiment 1 of this utility model;

[0031] Figure 2 This is a three-dimensional structural diagram of embodiment 1 of the present invention from angle one;

[0032] Figure 3 This is a three-dimensional structural diagram of embodiment 1 of the present invention from angle two;

[0033] Figure 4 This is a schematic diagram of the angle of the hinge pin and torsion spring positioning state in Embodiment 1 of this utility model;

[0034] Figure 5 This is a schematic diagram of the angle two structure of the hinge pin and torsion spring positioning state in Embodiment 1 of this utility model;

[0035] Figure 6 A schematic diagram showing the angle of the torsion spring mounted on the positioning end of the hinge pin.

[0036] Figure 7 Angle 2 is a structural diagram of a torsion spring fitted onto the positioning end of a hinge pin.

[0037] Figure 8 This is a schematic diagram of the main structure of Embodiment 2 of this utility model;

[0038] Figure 9 This is a three-dimensional structural diagram of Embodiment 2 of the present invention;

[0039] Figure 10 This is a schematic diagram of the positioning state of the hinge pin and torsion spring in Embodiment 2 of this utility model.

[0040] Figure 11 This is a schematic diagram of the structure of Embodiment 3 of this utility model;

[0041] Figure 12 This is a schematic diagram of the installation state of the hinge pin and torsion spring in Embodiment 3 of this utility model;

[0042] Figure 13 This is a diagram showing the state of the articulated pin through the pin constraint mechanism of this utility model.

[0043] Figure 14 This is a schematic diagram of the structure of the hinge pin and torsion spring in the lifting and installation state of Embodiment 3 of this utility model;

[0044] Figure 15 A schematic diagram of the angle and structure of the charging gate;

[0045] Figure 16 A schematic diagram of the structure of the charging gate at angle two;

[0046] In the diagram, 1. Frame; 2. Mounting platform; 3. Positioning table; 4. Positioning groove; 5. Hinge pin; 51. Positioning protrusion; 52. Spring latch; 53. Free end; 6. Torsion spring; 7. Lever; 8. Actuation drive cylinder; 9. Positioning seat; 10. Pin detection sensor; 11. Spring detection sensor; 12. Lifting electric cylinder; 13. Guide rod; 14. Constraint cylinder; 15. Constraint clamp; 16. Adjustment cylinder; 17. Guide shaft; 18. Charging door; 181. Housing; 182. Cover plate; 183. Hinge hole; 184. Spring mounting slot. Detailed Implementation

[0047] The principles and features of this utility model are described below with reference to examples. The examples are only used to explain this utility model and are not intended to limit the scope of this utility model.

[0048] Example 1, such as Figures 1-7 As shown, a mounting device for a hinge pin and torsion spring of a charging door includes a mounting platform 2 mounted on a frame 1. The hinge pin 5 includes a positioning end and a free end 53. The torsion spring 6 can be fitted onto the outside of the positioning end. The outer wall of the positioning end is provided with a positioning protrusion 51 and a spring retainer 52 for positioning one end of the torsion spring 6. The mounting platform 2 is provided with a positioning platform 3 for supporting the positioning end and a positioning groove 4 adapted to the positioning protrusion 51.

[0049] It also includes a torsion spring 6 actuation mechanism for mounting the torsion spring 6. The torsion spring 6 actuation mechanism includes a lever 7 for actuating the other end of the torsion spring 6 and an actuation drive cylinder 8 for driving the lever 7. The lever 7 is rotatably mounted on the mounting platform 2, and the cylinder body of the actuation drive cylinder 8 is mounted on the mounting platform 2.

[0050] The lever 7 is mounted on the mounting platform 2 via the positioning table 3. The positioning table 3 is rotatably mounted on the mounting platform 2, and the lever 7 is mounted on the positioning table 3. The positioning table 3 is provided with a connecting arm that is hinged to the piston rod of the actuation drive cylinder 8. The lever 7 can be mounted on the positioning table 3, which is rotatably mounted on the mounting platform 2. The actuation cylinder of the lever 7 is hinged to the connecting arm, and the rotation of the lever 7 can be achieved by driving the positioning table 3.

[0051] The mounting platform 2 is provided with a positioning seat 9, and the positioning platform 3 is rotatably mounted on the positioning seat 9. To ensure the stable rotation of the positioning platform 3, the positioning seat 9 can be provided on the mounting platform 2. For example, the positioning seat 9 is provided with an insertion hole for the positioning platform 3 to be inserted, and the positioning platform 3 has an insertion rod that mates with the insertion hole; or the positioning seat 9 is provided with a support rod, and the positioning platform 3 is a cylindrical structure with a closed bearing end that can be fitted onto the support rod and rotated.

[0052] The mounting platform 2 is also equipped with a pin detection sensor 10 for detecting whether the hinge pin 5 on the positioning platform 3 is in place. The pin detection sensor 10 can be a laser sensor. When the pin detection sensor 10 detects the hinge pin 5, the hinge pin 5 has been positioned. The pin detection sensor 10 transmits a signal to the control system, which will then control the execution of subsequent actions, such as controlling the lifting mechanism to achieve automated installation of the hinge pin 5 and torsion spring 6 with the charging door 18.

[0053] The mounting platform 2 is also equipped with a spring detection sensor 11 for detecting whether the torsion spring 6 on the hinge pin 5 is properly installed. To ensure that the torsion spring 6 is properly installed on the hinge pin 5, a spring detection sensor 11 can be used. The spring detection sensor 11 can be a proximity sensor. Once the torsion spring 6 is detected, it indicates that the torsion spring 6 is in place. The spring detection sensor 11 will transmit a signal to the control system, which will then control subsequent actions, such as controlling the lifting mechanism to lift the hinge pin 5 and torsion spring 6 to the charging door 18. The position of the hinge pin 5 and torsion spring 6 can be detected by setting either the pin detection sensor 10 or the spring detection sensor 11 separately. Alternatively, both the pin detection sensor 10 and the spring detection sensor 11 can be set simultaneously for more accurate confirmation of their position.

[0054] Example 2, as Figures 8-10 As shown, it also includes a lifting mechanism for the lifting and lowering action of the mounting platform 2, and the mounting platform 2 is connected to the frame 1 through the lifting mechanism. The mounting platform 2 can be mounted on the frame 1 through the lifting mechanism. In this way, after the hinge pin 5 and torsion spring 6 are positioned, the lifting mechanism is activated, and the mounting platform 2 can be lifted and moved towards the positioning charging door 18, carrying the hinge pin 5 and torsion spring 6, so as to realize the automated installation of the hinge pin 5 and torsion spring 6 of the charging door 18.

[0055] The lifting mechanism includes a lifting electric cylinder 12, the piston rod of which is connected to the fixed mounting platform 2, and the cylinder body of which is mounted on the frame 1. Specifically, the lifting mechanism can employ a lifting electric cylinder 12, which offers high and accurate control, supports complex motion trajectories, is low in cost, and offers flexible configuration.

[0056] It also includes a platform guiding mechanism for guiding the lifting and lowering of the fixed platform 2, the platform guiding mechanism including at least two guide rods 13. Specifically, the guide rods 13 can be disposed on the fixed platform 2, and the frame 1 has guide holes or guide sleeves for the lifting and lowering movement of the guide rods 13. The guide rods 13 can limit and guide the lifting movement of the fixed platform 2, ensuring smooth lifting and lowering of the fixed platform 2, while also reducing the radial force on the lifting cylinder 12 of the lifting mechanism and extending the service life of the lifting mechanism. The remaining structure is the same as in Embodiment 1, and will not be described in detail here.

[0057] Example 3, as Figures 11-14 As shown, a guide shaft 17 is pre-installed in the hinge hole 183 of the charging door 18, and a pin constraint mechanism is also included for constraining the free end 53 of the hinge pin 5 when it mates with the guide shaft 17. The pin constraint mechanism is mounted on the frame 1. During the actual assembly of the charging door 18, to ensure that the hinge pin 5 can be accurately inserted into the hinge hole 183 of the charging door 18, a guide shaft 17 is pre-installed in the hinge hole 183 of the charging door 18. Figure 14 As shown, a guide shaft 17 is pre-installed in the hinge hole 183 of the charging door 18. During the assembly of the hinge pin 5 and the torsion spring 6, as long as the hinge pin 5 is accurately positioned and aligned, as the hinge pin 5 approaches the charging door 18, its free end 53 will align with the pre-installed guide shaft 17. Then, the guide shaft 17 is pushed out to complete the installation of the hinge pin 5 of the charging door 18. Since the guide shaft 17 applies force to the free end 53 of the hinge pin 5 during the alignment process, it may affect the positioning stability of the hinge pin 5. Therefore, a pin constraint mechanism is provided. While the hinge pin 5 aligns with the guide shaft 17, the pin constraint mechanism can act, constraining the free end 53 of the hinge pin 5. This prevents the hinge pin 5 from becoming unstable due to the received force, thus resolving the impact on the stability of the hinge pin 5 during alignment with the guide shaft 17 and meeting the requirements for assembly stability and quality of the hinge pin 5.

[0058] The pin restraint mechanism includes a pair of restraint clamps 15 and a restraint cylinder 14 for driving the pair of restraint clamps 15 to clamp or release. When the pair of restraint clamps 15 clamp, they can form a restraint hole for the free end 53 of the hinge pin 5 to pass through. The pin restraint mechanism consists of a pair of restraint clamps 15, so that when the free end 53 of the hinge pin 5 approaches the guide shaft 17, the restraint clamps 15, under the action of the restraint cylinder 14, can clamp and form a restraint hole for the hinge pin 5 to pass through. As the free end 53 of the hinge pin 5 passes through the restraint hole and then engages with the guide shaft 17, the restraint hole can restrain the hinge pin 5. Figure 13 As shown, the state of the hinge pin 5 when it moves upward through the constraint hole is demonstrated. This ensures the stability and positioning accuracy of the hinge pin 5 when it is connected to the guide shaft 17, avoids the problem of inaccurate positioning of the hinge pin 5 due to connection with the guide shaft 17, and ensures the stable and accurate assembly of the hinge pin 5 and the torsion spring 6 on the charging door 18.

[0059] It also includes an adjusting cylinder 16 for adjusting the position of the pin restraint mechanism, which is connected to the frame 1 via the adjusting cylinder 16. The pin restraint mechanism must be able to solve the problem of stable positioning when the hinge pin 5 is engaged, and at the same time, the pin restraint mechanism must not hinder the assembly of the hinge pin 5. Therefore, the position of the pin restraint mechanism is designed to be adjustable. When needed, the pin restraint mechanism can move to the pin restraint working position. After the hinge pin 5 is engaged with the guide shaft 17, the pin restraint mechanism can be withdrawn from the pin restraint working position in time, and the hinge pin 5 can continue to be installed until the guide shaft 17 is pushed out to complete the assembly of the hinge pin 5 and the torsion spring 6.

[0060] The gooseneck of the cover plate 182 of the charging door 18 is inserted into the hinge part of the housing 181. A guide shaft 17 is pre-installed in the hinge hole 183 of both the housing and the cover plate to position the charging door 18. A torsion spring 6 is fitted onto the outside of the positioning end of the hinge pin 5, with one end of the torsion spring 6 engaging the spring retainer 52 of the hinge pin 5. Then, the hinge pin 5 with the torsion spring 6 is placed on the positioning platform 3, and the positioning protrusion 51 of the hinge pin 5 engages in the positioning groove 4, thus positioning the hinge pin 5. The pin detection sensor 10 detects that the hinge pin 5 is in place, and the spring detection sensor 11 detects that the torsion spring 6 is in place, transmitting the signal to the control system. The control system controls the lifting mechanism to move, the lifting cylinder 12 actuates, and the mounting platform 2 rises towards the charging door 18. As the direction moves, the pin constraint mechanism is in place, and the free end 53 of the hinge pin 5 passes through the constraint hole. The free end 53 of the hinge pin 5 passing through the constraint hole mates with the guide shaft 17. After mating, the hinge pin 5 continues to move upward, pushing up the guide shaft 17. The pin constraint mechanism resets to avoid affecting the upward movement of the hinge pin 5. When the hinge pin 5 continues to move upward to the position of compressing the torsion spring 6, the piston rod of the drive cylinder 8 is retracted, and the drive lever 7 rotates, acting on the other end of the torsion spring 6. The torsion spring 6 is compressed, and the mounting platform 2 continues to move upward until the hinge pin 5 is fully inserted into the hinge hole 183 of the charging door 18. The piston rod of the drive cylinder 8 is extended and reset, and the other end of the torsion spring 6 springs open into the spring mounting groove 184 of the housing 181 of the charging door 18. The torsion spring 6 is then installed in place. Figure 15 As shown, one end of the torsion spring 6 is engaged in the spring retainer 52 of the hinge pin 5, and the other end is engaged in the spring mounting groove 184 of the housing 181, as shown. Figure 16 As shown, this is the installation state of the hinge pin 5 on the charging door 18 as viewed from the free end 53 side of the hinge pin 5, realizing the automatic assembly of the hinge pin 5 and the torsion spring 6 of the charging door 18.

[0061] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A mounting device for a hinge pin and torsion spring of a charging door, characterized in that, The assembly includes a mounting platform (2) set on a frame (1), the hinge pin (5) includes a positioning end and a free end (53), the torsion spring (6) can be fitted on the outside of the positioning end, the outer wall of the positioning end is provided with a positioning protrusion (51) and a spring slot (52) for positioning one end of the torsion spring (6), the mounting platform (2) is provided with a positioning table (3) for supporting the positioning end and a positioning groove (4) adapted to the positioning protrusion (51); It also includes a torsion spring actuation mechanism for mounting the torsion spring (6), the torsion spring actuation mechanism including a lever (7) for actuating the other end of the torsion spring (6) and a actuation drive cylinder (8) for driving the lever (7) to move. The lever (7) is rotatably mounted on the mounting platform (2), and the cylinder body of the actuation drive cylinder (8) is mounted on the mounting platform (2).

2. The mounting device for the hinge pin and torsion spring of the charging door according to claim 1, characterized in that, The lever (7) is mounted on the fixed platform (2) via the positioning table (3). The positioning table (3) is rotatably mounted on the fixed platform (2). The lever (7) is mounted on the positioning table (3). The positioning table (3) is provided with a connecting arm that is hinged to the piston rod of the actuation drive cylinder (8).

3. The mounting device for the hinge pin and torsion spring of the charging door according to claim 2, characterized in that, The mounting platform (2) is provided with a positioning seat (9), and the positioning table (3) is rotatably mounted on the positioning seat (9).

4. The mounting device for the hinge pin and torsion spring of the charging door according to claim 1, characterized in that, It also includes a lifting mechanism for lifting the fixed platform (2), the fixed platform (2) being connected to the frame (1) through the lifting mechanism.

5. The mounting device for the hinge pin and torsion spring of the charging door according to claim 4, characterized in that, The lifting mechanism includes a lifting electric cylinder (12), the piston rod of which is connected to the fixed platform (2), and the cylinder body of which is mounted on the frame (1).

6. The mounting device for the hinge pin and torsion spring of the charging door according to claim 4, characterized in that, It also includes a platform guiding mechanism for guiding the lifting and lowering of the fixed platform (2), the platform guiding mechanism including at least two guide rods (13).

7. The mounting device for the hinge pin and torsion spring of the charging door according to any one of claims 1-6, characterized in that, The mounting platform (2) is also provided with a pin detection sensor (10) for detecting whether the hinge pin (5) on the positioning table (3) is in place; and / or the mounting platform (2) is also provided with a spring detection sensor (11) for detecting whether the torsion spring (6) on the hinge pin (5) is properly fitted.

8. The mounting device for the hinge pin and torsion spring of the charging door according to any one of claims 1-6, characterized in that, The hinge hole (183) of the charging door (18) is pre-installed with a guide shaft (17), and also includes a pin constraint mechanism for constraining the hinge pin (5) when it is connected to the guide shaft (17). The pin constraint mechanism is set on the frame (1).

9. The mounting device for the hinge pin and torsion spring of the charging door according to claim 8, characterized in that, The pin restraint mechanism includes a pair of restraint clamps (15) and a restraint cylinder (14) for driving the pair of restraint clamps (15) to clamp or release. When the pair of restraint clamps (15) clamp, they can form a restraint hole for the free end (53) of the hinge pin (5) to pass through.

10. The mounting device for the hinge pin and torsion spring of the charging door according to claim 8, characterized in that, It also includes an adjusting cylinder (16) for adjusting the position of the pin restraint mechanism, which is connected to the frame (1) via the adjusting cylinder (16).

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