Self-locking system

Abstract

The utility model discloses a self-locking system which comprises a photovoltaic support, a parking frame, a photovoltaic sweeper and a self-locking mechanism. The parking rack is arranged at one end of the photovoltaic support, and the parking rack is provided with a lock catch groove. The self-locking mechanism comprises a driving part and a locking assembly, the locking assembly is arranged at the bottom of the photovoltaic sweeper in a pivoted mode, and the driving end of the driving part is connected with the locking assembly. When the photovoltaic cleaning machine moves to the position above the stopping frame, the driving piece drives the locking assembly to rotate, the other end of the locking assembly is driven to be clamped into the lock catch groove, and therefore the photovoltaic cleaning machine is locked on the stopping frame. By means of the arrangement, the photovoltaic sweeper can be fixed to the shutdown frame more firmly, and the situation that the photovoltaic sweeper is damaged due to extremely severe weather is avoided.

Description

Technical Field

[0001] The utility model relates to the photovoltaic field, in particular to a self-locking system. Background Art

[0002] In the existing technology, a series of measures have been implemented to prevent the sweeper from leaving the docking station due to strong winds, such as adding high wind protection to the program and adding limiters to the docking station. These measures can ensure that the sweeper always stays at the docking station even in light wind conditions. However, in reality, severe weather such as strong winds is common, and the above measures will fail. If the limit mechanism fails, the photovoltaic sweeper may at best be blown onto the photovoltaic panels, affecting the appearance and power generation efficiency. At worst, it may fall to the ground, damaging the sweeper and the photovoltaic panels, and the subsequent manual repositioning is labor-intensive and inefficient.

[0003] Therefore, it is necessary to provide a self-locking system to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a self-locking system to improve the parking of the photovoltaic cleaning device on the parking rack more firmly.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A self-locking system,

[0007] Photovoltaic brackets;

[0008] A parking rack is provided at one end of the photovoltaic support, and the parking rack has a locking slot;

[0009] Photovoltaic sweeper;

[0010] A self-locking mechanism includes a driving member and a locking assembly, wherein the locking assembly is pivotally disposed on the bottom of the photovoltaic sweeper, and a driving end of the driving member is connected to the locking assembly;

[0011] When the photovoltaic sweeper moves to the top of the parking frame, the driving member drives the locking assembly to rotate, driving the locking assembly to be stuck in the locking groove, thereby locking the photovoltaic sweeper on the parking frame.

[0012] Furthermore, the photovoltaic sweeper includes a frame and a first walking device and a second walking device provided at opposite ends of the frame along the length direction of the frame;

[0013] The self-locking mechanism further includes a base, which is arranged at the bottom of the first walking device. The driving member is fixed to the base, and the driving member drives the locking assembly to rotate around the base.

[0014] Furthermore, the base includes a first base and two second bases vertically arranged on opposite sides of the first base, the first base is arranged at the bottom of the first walking device, and a receiving space is formed between the first base and the two second bases. The driving member is arranged in the receiving space, and each second base has a mounting hole. The driving end of the driving member is provided with a driving shaft, and the two ends of the driving shaft are respectively inserted into the two mounting holes and connected to the locking assembly.

[0015] Furthermore, the locking assembly includes a connecting member and a locking member, the connecting member is connected to the driving shaft, the locking member is fixed vertically to the connecting member, and the locking member is extended toward the second walking device.

[0016] Furthermore, the connecting member includes a main body and two connecting parts vertically arranged on both sides of the top of the main body along the height direction. The two connecting parts are respectively arranged on the outside of the two second bases, and the free ends of the two connecting parts are respectively connected to the driving shaft.

[0017] Furthermore, each of the second bases is further provided with a first limiting block and a second limiting block;

[0018] When the driving member and the locking assembly are assembled, the locking assembly rotates along a rotation path driven by the driving member, and the first limit block and the second limit block are arranged on the rotation path, and the first limit block and the second limit block are respectively located on both sides of the connecting part.

[0019] Furthermore, the connecting portion includes a main body portion and a first bending portion and a second bending portion provided on both sides of the main body portion along the width direction;

[0020] The first limiting block is provided on a path of the first bending portion rotating clockwise around the base, and the second limiting block is provided on a path of the second bending portion rotating clockwise around the base;

[0021] When the driving member drives the connecting member to rotate clockwise around the base, the first limiting block abuts against the first bending portion, and the second limiting block abuts against the second bending portion.

[0022] Furthermore, the parking frame includes a first bracket and a second bracket arranged in parallel, and a third bracket and a fourth bracket arranged on the same plane as the first bracket and the second bracket. The first bracket, the second bracket, the third bracket and the fourth bracket are connected end to end in sequence to form a frame structure. The parking frame also includes a locking frame, which is arranged on the third bracket and has the locking groove.

[0023] Furthermore, the first walking device includes a first driving mechanism, two first walking wheels and two first guide wheels, the two first walking wheels and the two first guide wheels are respectively connected to the first driving mechanism in a transmission manner, the two first walking wheels can roll on the top surface of the third bracket, and the two first guide wheels can roll on the side surface of the third bracket, the first guide wheel is perpendicular to the rotation axis of the first walking wheel, and the self-locking mechanism is arranged between the two first guide wheels.

[0024] Furthermore, the lock frame includes a first limiting rod and two second limiting rods, the first limiting rod extends along the first direction, one end of the first limiting rod is connected to the first bracket, the two second limiting rods extend along the second direction, and the two second limiting rods are spaced apart along the first direction, the two ends of the second limiting rod are respectively connected to the first limiting rod and the third bracket, the first limiting rod, the two second limiting rods and the third bracket are interconnected to form the lock groove.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] The utility model discloses a self-locking system, which includes a photovoltaic bracket, a parking frame, a photovoltaic sweeper and a self-locking system. The photovoltaic bracket and the parking frame are arranged at one end of the photovoltaic bracket, and the parking frame has a locking groove. The self-locking mechanism includes a driving member and a locking assembly, the locking group is pivotally arranged at the bottom of the photovoltaic sweeper, and the driving end of the driving member is connected to the locking assembly. When the photovoltaic sweeper moves to the top of the parking frame, the driving member drives the locking assembly to rotate, thereby driving the locking assembly to engage in the locking groove, thereby locking the photovoltaic sweeper on the parking frame. This allows the photovoltaic sweeper to be more securely fixed on the parking frame even in extremely harsh weather conditions, avoiding falling off from the parking frame and causing damage to the photovoltaic sweeper. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional schematic diagram of the self-locking system of the utility model in a non-self-locking state;

[0028] Figure 2 yes Figure 1 A partial enlarged schematic diagram of part A;

[0029] Figure 3 It is a three-dimensional schematic diagram of the self-locking system of the utility model in the self-locking state;

[0030] Figure 4 yes Figure 3 A partial enlarged schematic diagram of part B;

[0031] Figure 5 yes Figure 1 Schematic diagram of the three-dimensional decomposition of

[0032] Figure 6 yes Figure 1 Top view of the middle docking rack;

[0033] Figure 7 This is a side view of the photovoltaic sweeper and the self-locking mechanism in the present utility model in a non-self-locking state;

[0034] Figure 8 yes Figure 7 A partial enlarged schematic diagram of part C after being rotated 90°;

[0035] Figure 9 It is a side view of the photovoltaic sweeper and the self-locking mechanism in the self-locking state in the utility model;

[0036] Figure 10 yes Figure 9 A partial enlarged schematic diagram of part D after being rotated 90°;

[0037] Figure 11 This is a three-dimensional exploded schematic diagram of the self-locking mechanism of the utility model;

[0038] Figure 12 yes Figure 11 A three-dimensional decomposition diagram from another angle. DETAILED DESCRIPTION

[0039] The following exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. If there are several specific embodiments, the features of these embodiments can be combined with each other without conflict. When the description refers to the drawings, unless otherwise specified, the same numbers in different drawings represent the same or similar elements. The contents described in the following exemplary embodiments do not represent all embodiments consistent with the present invention; rather, they are merely examples of devices, products and / or methods that are consistent with some aspects of the present invention and are described in the claims of the present invention.

[0040] The terms used in this utility model are only for the purpose of describing specific embodiments and are not intended to limit the scope of protection of this utility model. The singular forms "a", "the" or "the" used in the specification and claims of this utility model are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0041] Please refer to Figures 1 to 12The present invention discloses a self-locking system 100, which includes a photovoltaic support, a parking frame 2, a photovoltaic sweeper 3, and a self-locking mechanism 4. The photovoltaic support extends along a first direction D1-D1. The parking frame 2 is disposed at one end of the photovoltaic support along the first direction D1-D1. The parking frame 2 has a locking slot 201. The self-locking mechanism 4 includes a driving member 41 and a locking assembly 42. One end of the locking assembly 42 is pivotally disposed at the bottom of the photovoltaic sweeper 3, and the driving end of the driving member 41 is connected to one end of the locking assembly 42. When the photovoltaic sweeper 3 moves above the parking frame 2, the driving member 41 drives the locking assembly 42 to rotate, thereby causing the locking assembly 42 to engage the locking slot 201, thereby locking the photovoltaic sweeper 3 to the parking frame 2. This ensures that the photovoltaic sweeper 3 can be stably fixed to the parking frame 2, preventing the photovoltaic sweeper 3 from falling from the parking frame 2 in inclement weather and causing damage to the photovoltaic sweeper 3.

[0042] The photovoltaic rack includes a main beam extending along a first direction D1-D1, with a parking rack 2 disposed at one end of the main beam. The main beam is also provided with a plurality of photovoltaic modules arranged along the first direction D1-D1. Preferably, the width of the parking rack 2 in a second direction D2-D2 is consistent with the width of the photovoltaic modules, thereby facilitating smooth movement of the photovoltaic sweeper 3 from the photovoltaic modules to the parking rack 2. The second direction D2-D2 is perpendicular to the first direction D1-D1.

[0043] Please refer to Figure 6 The parking frame 2 includes a first bracket 21 and a second bracket 22 arranged in parallel, as well as a third bracket 23 and a fourth bracket 24 arranged in the same plane as the first bracket 21 and the second bracket 22. The first bracket 21 and the second bracket 22 are spaced relative to each other along a first direction D1-D1, and the second bracket 22 and the fourth bracket 24 are spaced relative to each other along a second direction D2-D2, with the second direction D2-D2 being perpendicular to the first direction D1-D1. The first bracket 21, the second bracket 22, the third bracket 23, and the fourth bracket 24 are connected end-to-end to form a frame structure. The parking frame 2 also includes a locking bracket 25, which is mounted on the third bracket 23 and has a locking groove 201. When the photovoltaic cleaning machine 3 is moved to the parking frame 2, the locking bracket 25 is positioned above the locking assembly 42, and the driving member 41 drives the other end of the locking assembly 42 to engage the locking groove 201. This ensures that the photovoltaic cleaning machine 3 is stably fixed to the parking frame 2. In other embodiments, the locking frame 25 may also be provided on the fourth bracket 24 , as long as the locking frame 25 corresponds to the self-locking mechanism 4 in upper and lower directions, and no limitation is imposed here.

[0044] Specifically, the locking frame 25 includes a first limiting rod 251 and two second limiting rods 252. The first limiting rod 251 extends along the first direction D1-D1, with one end of the first limiting rod 251 connected to the first bracket 21. The two second limiting rods 252 extend along the second direction D2-D2 and are spaced apart along the first direction D1-D1. The two ends of the second limiting rod 252 are respectively connected to the first limiting rod 251 and the third bracket 23. The first limiting rod 251, the two second limiting rods 252, and the third bracket 23 are interconnected to form a locking groove 201. When the photovoltaic cleaning machine 3 moves to the parking frame 2, at least a portion of the locking assembly is located below the locking frame 25. Driven by the driving member 41, at least a portion of the locking assembly 42 engages the locking groove 201 from bottom to top, thereby connecting the photovoltaic cleaning machine 3 to the parking frame 2. In other embodiments, the first limiting rod 251 is connected to the second bracket 22 , which is not limited here.

[0045] Please refer to Figures 1 to 10 The photovoltaic sweeper 3 includes a frame 31 and a first running device 32 and a second running device 33 disposed at opposite ends of the frame 31 along the length of the frame 31. Specifically, the frame 31 includes two long sides 311 extending along the second direction D2-D2 and two short sides 312 extending along the first direction D1-D1. The two long sides 311 and the two short sides 312 are connected end to end to form a rectangular frame structure. The first running device 32 and the second running device 33 are respectively disposed at the positions of the two short sides 312. The first running device 32 or the second running device 33 is used to drive the frame 31 to move along the first direction D1-D1 on the photovoltaic support toward the parking rack 2. In this embodiment, the self-locking mechanism 4 is disposed at the bottom of the first running device 32. The self-locking mechanism 4 also includes a base 43, which is disposed at the bottom of the first running device 32. The drive member 41 is fixed to the base 43, and the drive member 41 drives one end of the self-locking component to rotate around the base 43. The photovoltaic sweeper 3 also includes a controller 34. A first travel device 32 and a driver 41 are electrically connected to the controller 34. The first travel device 32 is positioned outside the third bracket 23 in the second direction D2-D2 to prevent the locking assembly 42 from colliding with the parking rack 2 while the photovoltaic sweeper 3 is moving toward the parking rack 2. When the photovoltaic sweeper 3 completes cleaning of the photovoltaic panels and moves above the parking rack 2, the controller 34 controls the driver 41 to rotate one end of the locking assembly 42 about the base 43, causing the other end of the locking assembly 42 to engage the locking slot 201, thereby securing the photovoltaic sweeper 3 to the parking rack 2. In this embodiment, the driver 41 is a motor.

[0046] Please refer to Figures 7 to 10The first walking device 32 includes a first driving mechanism 321, two first walking wheels 322 and two first guide wheels 323. The two first walking wheels 322 and the two first guide wheels 323 are respectively connected to the first driving mechanism 321 in a transmission manner. The two first walking wheels can roll on the top surface of the third bracket 23, and the two first guide wheels 323 can roll on the side surface of the third bracket 23. The first walking wheel 322 is perpendicular to the rotation axis of the first guide wheel 323. The locking assembly 42 is arranged between the two first guide wheels 323, thereby optimizing the structural layout, saving installation space, making the overall structure of the photovoltaic sweeper 3 more compact, and also facilitating installation and maintenance.

[0047] Please refer to Figures 7 to 12 The base 43 includes a first base portion 431 and two second base portions 432 perpendicularly disposed on opposite sides of the first base portion 431. The first base portion 431 is disposed at the bottom of the first traveling device 32, and the two second base portions 432 are spaced apart along the first direction D1-D1. A receiving space 401 is formed between the first base portion 431 and the two second base portions 432. The driving member 41 is disposed within the receiving space 401. Each second base portion 432 has a mounting hole 402, which communicates with the receiving space 401. A driving shaft 411 is provided at the driving end of the driving member 41. The two ends of the driving shaft 411 are respectively inserted into the two mounting holes 402 and then connected to one end of the locking assembly 42. This arrangement facilitates the fixing of the driving member 41 and the self-locking assembly to the bottom of the first traveling device 32, facilitating installation and subsequent maintenance.

[0048] Please refer to Figures 11 to 12The locking assembly 42 includes a connecting member 421 and a locking member 422. One end of the connecting member 421 is rotatably arranged on the driving end of the driving member 41, one end of the locking member 422 is vertically arranged at the other end of the connecting member 421, and the other end of the locking member 422 is extended toward the second walking device 33. When the photovoltaic cleaning machine 3 moves on the photovoltaic bracket and cleans the photovoltaic components set on the photovoltaic bracket, the locking member 422 is located below the photovoltaic component. When the photovoltaic cleaning machine 3 moves on the photovoltaic component, the locking member 422 and the photovoltaic component are parallel to each other. At this time, the locking member 422 can prevent the photovoltaic cleaning machine 3 from colliding with the bottom of the photovoltaic component, thereby preventing damage to the photovoltaic component. When the photovoltaic sweeper 3 moves to the top of the parking rack 2, the locking member 422 is located below the locking bracket 25. The controller 34 controls the driving member 41 to drive the connecting member 421 to rotate about the second base 432, thereby driving the locking member 422 to rotate toward the locking groove 201 until at least a portion of the locking member 422 is engaged with the locking groove 201, thereby securing the photovoltaic sweeper 3 to the parking rack 2. In this embodiment, the locking member 422 is engaged with the locking bracket 25 in the locking groove 201. At this time, the self-locking force of the locking member 422 reaches 50 kg, allowing the photovoltaic sweeper 3 to be more securely secured to the parking rack 2.

[0049] Please refer to Figures 11 to 12 The connecting member 421 includes a main body 4211 and two connecting portions 4212 perpendicularly disposed on either side of the top of the main body 4211 along the height direction D3-D3. The two connecting portions 4212 are spaced apart along the first direction D1-D1 and are disposed on the outsides of the two second base portions 432, respectively. The free ends of the two connecting portions 4212 are respectively connected to the drive shaft 411. Specifically, the connecting member 421 has a U-shaped structure. By providing the two connecting portions 4212 on the main body 4211, the main body 4211 is prevented from colliding with the base 43 during rotation, thereby improving the rotational stability of the locking member 422.

[0050] Please refer to Figure 8 、 Figures 10 to 12, each second base 432 is also provided with a first limit block 44 and a second limit block 45. When the driving member 41 is assembled with the locking assembly 42, the locking assembly 42 rotates along a rotation path RR driven by the driving member 41, and the first limit block 44 and the second limit block 45 are arranged on the rotation path RR, and the first limit block 44 and the second limit block 45 are respectively located on both sides of the connecting portion 4212. Preferably, the first limit block 44 and the second limit block 45 are two limit wheels with the same diameter. When the driving member 41 drives the connecting member 421 to rotate around the base 43 along the rotation path RR, the first limit block 44 and the second limit block 45 respectively abut against the two sides of the connecting portion 4212, thereby preventing the connecting portion 4212 from rotating at too large an angle and causing damage to the photovoltaic sweeper 3 and the parking rack 2.

[0051] Please refer to Figure 8 、 Figures 10 to 12 Specifically, the connecting portion 4212 includes a main body 42121 and a first bend 42122 and a second bend 42123 disposed on either side of the main body 42121 along the width direction. The first limit block 44 is disposed on the path along which the first bend 42122 rotates clockwise around the base 43 along the rotation path RR, and the second limit block 45 is disposed on the path along which the second bend 42123 rotates clockwise around the base 43. When the driving member 41 drives the connecting member 421 to rotate clockwise around the base 43 along the rotation path RR, the first limit block 44 abuts against the first bend 42122, and the second limit block 45 abuts against the second bend 42123. In this embodiment, the height of the first limit block 44 is higher than that of the second limit block 45, thereby limiting the rotation angle of the connecting portion 4212 and preventing damage to the photovoltaic sweeper 3 and the parking rack 2 caused by excessive rotation.

[0052] In summary, the present invention discloses a self-locking system 100, which includes a photovoltaic bracket, a parking frame 2, a photovoltaic sweeper 3, and a self-locking mechanism 4. The photovoltaic bracket is extended along a first direction D1-D1, and the parking frame 2 is arranged at one end of the photovoltaic bracket along the first direction D1-D1. The parking frame 2 has a locking groove 201. The photovoltaic cleaning device moves to the top of the parking frame 2 along the extension direction of the photovoltaic bracket. The self-locking mechanism 4 includes a driving member 41 and a locking assembly 42. One end of the locking assembly 42 is pivotally arranged at the bottom of the photovoltaic sweeper 3, and the driving end of the driving member 41 is connected to one end of the locking assembly 42. When the photovoltaic sweeper 3 moves to the top of the parking rack 2, the driving member 41 drives one end of the locking assembly 42 to rotate, thereby driving the other end of the locking assembly 42 to be clamped into the locking groove 201, so that the photovoltaic sweeper 3 can be more firmly fixed on the parking rack 2 even in extremely bad weather conditions, avoiding falling off from the parking rack 2 and causing damage to the photovoltaic sweeper 3.

[0053] It should be understood that the words used in the specification and claims of the present invention, such as "first", "second" and similar words, do not indicate any order, quantity or importance, but are only used to distinguish the names of features. Similarly, "one" or "an" and similar words do not indicate a quantity limitation, but rather indicate the existence of at least one. Unless otherwise specified, the words "front", "back", "upper", "lower" and similar words that appear in the present invention are only for the convenience of description and are not limited to a specific position or a spatial orientation. Words such as "include" or "comprises" are open-ended expressions, meaning that the elements appearing before "include" or "comprises" include the elements appearing after "include" or "comprises" and their equivalents, which does not exclude that the elements appearing before "include" or "comprises" may also include other elements. If "several" appears in the present invention, it means two or more.

[0054] The above embodiments are only used to illustrate the present invention and are not intended to limit the technical solutions described in the present invention. The understanding of this specification should be based on technical personnel in the relevant technical field. For example, the description of directions such as "front", "back", "left", "right", "up", and "down" has been described in detail with reference to the above embodiments. However, ordinary technical personnel in this field should understand that technical personnel in the relevant technical field can still modify or replace the present invention with equivalents, and all technical solutions and improvements that do not depart from the spirit and scope of the present invention should be covered by the scope of the claims of the present invention.

Claims

1. A self-locking system, characterized in that: Photovoltaic brackets; A parking frame (2) is arranged at one end of the photovoltaic support, and the parking frame (2) has a locking groove (201); Photovoltaic sweeper (3); A self-locking mechanism (4) comprising a driving member (41) and a locking assembly (42), wherein the locking assembly (42) is pivotally arranged at the bottom of the photovoltaic sweeper (3), and a driving end of the driving member (41) is connected to the locking assembly (42); When the photovoltaic sweeper (3) moves to the top of the parking frame (2), the driving member (41) drives the locking assembly (42) to rotate, causing the locking assembly (42) to be engaged in the locking slot (201), thereby locking the photovoltaic sweeper (3) on the parking frame (2).

2. The self-locking system according to claim 1, wherein: The photovoltaic sweeper (3) comprises a frame (31) and a first walking device (32) and a second walking device (33) arranged at opposite ends of the frame (31) along the length direction of the frame (31); The self-locking mechanism (4) further comprises a base (43), wherein the base (43) is arranged at the bottom of the first walking device (32), the driving member (41) is fixed to the base (43), and the driving member (41) drives the locking assembly (42) to rotate around the base (43).

3. The self-locking system according to claim 2, wherein: The base (43) includes a first base (431) and two second bases (432) vertically arranged on opposite sides of the first base (431). The first base (431) is arranged at the bottom of the first walking device (32). A receiving space (401) is formed between the first base (431) and the two second bases (432). The driving member (41) is arranged in the receiving space (401). Each of the second bases (432) has a mounting hole (402). The driving end of the driving member (41) is provided with a driving shaft (411). The two ends of the driving shaft (411) are respectively inserted into the two mounting holes (402) and then connected to the locking assembly (42).

4. The self-locking system according to claim 3, wherein: The locking assembly (42) includes a connecting member (421) and a locking member (422), wherein the connecting member (421) is connected to the driving shaft (411), the locking member (422) is fixedly arranged vertically to the connecting member (421), and the locking member (422) is extended toward the second walking device (33).

5. The self-locking system according to claim 4, characterized in that: The connecting member (421) includes a main body (4211) and two connecting parts (4212) arranged perpendicularly on both sides of the top of the main body (4211) along the height direction, the two connecting parts (4212) are respectively arranged on the outside of the two second base parts (432), and the free ends of the two connecting parts (4212) are respectively connected to the driving shaft (411).

6. The self-locking system according to claim 5, characterized in that: Each of the second bases (432) is further provided with a first limiting block (44) and a second limiting block (45); When the driving member (41) and the locking assembly (42) are assembled together, the locking assembly (42) rotates along a rotation path (RR) driven by the driving member (41), and the first limit block (44) and the second limit block (45) are arranged on the rotation path (RR), and the first limit block (44) and the second limit block (45) are respectively located on both sides of the connecting portion (4212).

7. The self-locking system according to claim 6, characterized in that: The connecting portion (4212) includes a main body portion (42121) and a first bending portion (42122) and a second bending portion (42123) provided on both sides of the main body portion (42121) along the width direction; The first limiting block (44) is arranged on a path where the first bending portion (42122) rotates clockwise around the base (43), and the second limiting block (45) is arranged on a path where the second bending portion (42123) rotates clockwise around the base (43); When the driving member (41) drives the connecting member (421) to rotate clockwise around the base (43), the first limiting block (44) abuts against the first bending portion (42122), and the second limiting block (45) abuts against the second bending portion (42123).

8. The self-locking system according to claim 2, wherein: The parking frame (2) comprises a first bracket (21) and a second bracket (22) arranged in parallel, and a third bracket (23) and a fourth bracket (24) arranged on the same plane as the first bracket (21) and the second bracket (22). The first bracket (21), the second bracket (22), the third bracket (23) and the fourth bracket (24) are connected end to end in sequence to form a frame structure. The parking frame (2) also comprises a locking frame (25), the locking frame (25) is arranged on the third bracket (23), and the locking frame (25) has the locking groove (201).

9. The self-locking system according to claim 8, characterized in that: The first walking device (32) includes a first driving mechanism (321), two first walking wheels (322) and two first guide wheels (323). The two first walking wheels (322) and the two first guide wheels (323) are respectively connected to the first driving mechanism (321) by transmission. The two first walking wheels (322) can roll on the top surface of the third bracket (23), and the two first guide wheels (323) can roll on the side surface of the third bracket (23). The first guide wheel (323) is perpendicular to the rotation axis of the first walking wheel (322). The self-locking mechanism (4) is arranged between the two first guide wheels (323).

10. The self-locking system according to claim 8, wherein: The lock frame (25) includes a first limiting rod (251) and two second limiting rods (252), wherein the first limiting rod (251) is extended along a first direction, one end of the first limiting rod (251) is connected to the first bracket (21), the two second limiting rods (252) are extended along a second direction, and the two second limiting rods (252) are spaced apart along the first direction, the two ends of the second limiting rod (252) are respectively connected to the first limiting rod (251) and the third bracket (23), and the first limiting rod (251), the two second limiting rods (252) and the third bracket (23) are connected to each other to form the lock slot (201).

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