An electric box locking device and a quick-change electric box

Abstract

The application relates to an electric box locking device and a quick-change electric box, which comprises a support, a locking mechanism and a locking guide pin. The locking mechanism comprises a positioning sleeve, a locking sleeve, a driving assembly and a locking bead, and the locking sleeve is slidably sleeved outside the positioning sleeve. The driving assembly drives the locking sleeve to move along the central axis of the locking sleeve. At least one retreat groove is formed in the inner side wall of the locking sleeve, at least one clamping groove is formed in the outer side wall of the positioning sleeve, and the clamping groove is provided with the locking bead. In a first state, the retreat grooves and the clamping grooves are one-to-one aligned, a part of the locking bead is located in the retreat groove, and another part of the locking bead is located in the clamping groove. In a second state, the retreat grooves and the clamping grooves are misaligned, and a part of the locking bead is located in the clamping groove. The locking guide pin can be sleeved in the positioning sleeve, and the locking guide pin is provided with an annular locking groove. The electric box locking device is simple in structure and durable, the locking and unlocking processes can be realized through the relative movement between the locking sleeve and the positioning sleeve, the operation is convenient, and the problems of jamming and unlocking failure can be avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile machinery, and in particular to an electric box locking device and a quick-change electric box. BACKGROUND

[0002] The existing electric box structure of the battery swap heavy truck type is relatively bulky, and the overall shape is relatively high, which increases the center of gravity of the whole vehicle, so that there is a certain safety hazard in the driving process of the vehicle. The electric box locking device of the current electric box is a cylinder lock tongue structure, a total of six locking points are designed, which requires high synchronization of the electric box locking device, and the lock tongue cannot be retracted after being locked, which leads to the situation that the electric box cannot be removed, and serious accidents may occur. SUMMARY

[0003] (I) Technical problems to be solved

[0004] In view of the above-mentioned shortcomings and deficiencies of the prior art, the present application provides an electric box locking device and a quick-change electric box, which solves the technical problems of high synchronization requirement of the electric box locking device and the situation that the lock tongue cannot be retracted after being locked, thereby leading to the situation that the electric box cannot be removed.

[0005] (II) Technical solutions

[0006] In order to achieve the above-mentioned purpose, the electric box locking device and the quick-change electric box of the present application comprise:

[0007] a support;

[0008] a locking mechanism, the locking mechanism comprising a positioning sleeve, a locking sleeve, a driving assembly and a locking bead; the positioning sleeve is fixedly arranged on the support, the locking sleeve is slidingly arranged outside the positioning sleeve; the driving assembly is arranged on the support, the driving assembly can drive the locking sleeve to move along the direction of the central axis of the locking sleeve; at least one retraction groove is formed on the inner side wall of the locking sleeve, at least one clamping groove is formed on the outer side wall of the positioning sleeve, and one locking bead is placed in each clamping groove; the locking sleeve has a first state and a second state under the driving of the driving assembly, the first state is that the retraction groove and the clamping groove are aligned one by one, a part of the locking bead is located in the retraction groove, and another part of the locking bead is located in the clamping groove, and the second state is that the retraction groove and the clamping groove are misaligned, and a part of the locking bead is located in the clamping groove;

[0009] a locking guide pin, the locking guide pin can be sleeved in the positioning sleeve, and an annular locking groove is formed on the locking guide pin; in the second state, another part of the locking bead is located in the locking groove.

[0010] Optionally, the locking mechanism further comprises a connecting arm and a plurality of connecting rods;

[0011] The connecting rods are slidingly arranged on the bracket, the central axis of the connecting rods is parallel to the central axis of the locking sleeve, and the sliding direction of the connecting rods is parallel to the central axis of the locking sleeve;

[0012] The first end of the connecting rod is connected with the locking sleeve, and the second end of the connecting rod is connected with the connecting arm.

[0013] Optionally, the driving assembly comprises a driving cylinder and a driving rod;

[0014] The cylinder body of the driving cylinder is arranged on the bracket, and the central axis of the piston rod of the driving cylinder is collinear with the central axis of the locking sleeve;

[0015] The first end of the driving rod is connected with the piston rod of the driving cylinder, and the second end of the driving rod is hingedly connected with the connecting arm.

[0016] Optionally, the locking guide pin comprises a columnar pin body and a conical head, the conical head is arranged at the end of the columnar pin body, and the locking groove is arranged on the side surface of the columnar pin body.

[0017] Further, the present application also provides a quick-change electric box, which comprises a box body, a first supporting device, a second supporting device, a first electric box locking device and a second electric box locking device; the box body is a cuboid or a square structure, the first electric box locking device and the second electric box locking device are both the electric box locking device as described above;

[0018] The first supporting device and the second supporting device are respectively connected with a group of opposite side walls of the box body one by one;

[0019] The first supporting device abuts above the first electric box locking device, and the second supporting device abuts above the second electric box locking device;

[0020] The locking guide pin of the first electric box locking device is arranged on the first supporting device, and the locking guide pin of the second electric box locking device is arranged on the second supporting device.

[0021] Optionally, the first supporting device and the second supporting device both comprise a supporting plate and a plurality of reinforcing ribs;

[0022] The supporting plate is horizontally arranged on the outer side wall of the box body, the reinforcing ribs are vertically arranged on the upper surface of the supporting plate, and the reinforcing ribs are connected with the outer side wall of the box body;

[0023] The locking guide pin is vertically arranged on the lower surface of the support plate.

[0024] Optionally, the first support device and the second support device each further comprise an adjusting plate, a power plug and a power socket.

[0025] The adjusting plate is detachably arranged on the lower surface of the support plate, the power plug is arranged on the lower surface of the adjusting plate, the power socket is arranged on the support, the positions of the power plug and the power socket are matched, and the power plug can be inserted into the power socket.

[0026] The locking guide pin is vertically arranged on the lower surface of the adjusting plate.

[0027] Optionally, the upper end surface of the power socket is located in the same horizontal plane as the upper end surface of the positioning sleeve.

[0028] Optionally, the quick-change power box further comprises a plug-and-pull ear seat.

[0029] The plug-and-pull ear seat comprises an ear plate and a reinforcing plate, the ear plate is horizontally arranged on the outer side wall of the box body, the reinforcing plate is vertically arranged on the upper surface of the ear plate, and the reinforcing plate is connected with the outer side wall of the box body.

[0030] Optionally, a positioning hole is formed in the ear plate.

[0031] (Three) beneficial effects

[0032] The initial state of the locking mechanism is the first state, the locking guide pin is inserted into the positioning sleeve of the locking mechanism, the driving assembly drives the locking sleeve to move, the locking sleeve pushes the locking bead on the locking mechanism into the locking groove on the locking guide pin, and the first state is switched to the second state and remains in the second state, thereby locking the locking guide pin. The unlocking process of the locking guide pin, in the second state, the driving assembly drives the locking sleeve on the locking mechanism, the second state is switched to the first state, after the retreat groove on the locking sleeve is aligned with the clamping groove on the positioning sleeve, the locking bead retreats into the retreat groove on the locking sleeve, thereby realizing the function of unlocking. The structure of the electric box locking device is simple and durable, the locking and unlocking processes can be realized through the relative movement between the locking sleeve and the positioning sleeve, the locking and unlocking processes are convenient to operate, thereby effectively avoiding the situation that the electric box locking device is stuck and cannot be unlocked.

[0033] The box body is mounted on the locking mechanism through the first support device and the second support device, the first support device and the second support device provide effective support force for the box body, ensuring stable and reliable installation of the box body. The box body is quickly locked by the locking mechanism, reducing the number of locking mechanisms while ensuring the locking effect. When the power box needs to be replaced, the locking mechanism is quickly unlocked, the operation is simple, and the replacement efficiency is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0034] Figure 1 It is the schematic diagram of the mounting structure of the electric box locking device of the application;

[0035] Figure 2 It is the schematic diagram of the locking mechanism structure of the electric box locking device of the application;

[0036] Figure 3 It is the schematic diagram of the overall structure of the quick-change electric box of the application;

[0037] Figure 4 It is the schematic diagram of the mounting structure of the supporting device of the quick-change electric box of the application;

[0038] Figure 5 It is the schematic diagram of the mounting structure of the locking guide column pin of the electric box locking device of the application.

[0039]

BRIEF DESCRIPTION OF DRAWINGS

[0040] 1: quick-change electric box; 101: box body;

[0041] 102: supporting device; 1021: adjusting plate; 1022: power plug;

[0042] 1023: locking guide column pin; 10231: conical head; 10232: locking groove;

[0043] 103: plug-in ear seat;

[0044] 2: bracket; 201: driving rod; 202: power socket;

[0045] 3: locking mechanism; 301: positioning sleeve; 3011: clamping groove; 302: locking bead; 303: locking sleeve; 3031: retreat groove; 304: connecting arm. DETAILED DESCRIPTION

[0046] In order to better explain the application, so as to be understood, the following specific embodiments are combined with the drawings, and the application is described in detail. In this paper, the orientation of "up", "down" and the like is referred to as the reference of the orientation. Figure 1

[0047] In order to better understand the above technical solutions, the exemplary embodiments of the application will be described in more detail below with reference to the drawings. Although the exemplary embodiments of the application are shown in the drawings, it should be understood that the application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a clearer, more thorough understanding of the application and to enable the scope of the application to be fully conveyed to those skilled in the art.

[0048] As​Figure 1As shown, the present application provides an electric box locking device, which comprises a bracket 2, a locking mechanism 3 and a locking guide pin 1023. The locking mechanism 3 comprises a positioning sleeve 301, a locking sleeve 303, a driving assembly and a locking bead 302. The positioning sleeve 301 is fixedly installed on the bracket 2 and positions the locking guide pin 1023. The locking sleeve 303 is slidably sleeved outside the positioning sleeve 301. The locking sleeve 303 and the positioning sleeve 301 are preferably circular tubes. A gap is arranged between the inner wall of the locking sleeve 303 and the outer wall of the positioning sleeve 301. The locking sleeve 303 and the positioning sleeve 301 can slide relative to each other. In order to improve the lubrication effect, a lubricant can also be added in the gap to avoid wear. The driving assembly is installed on the bracket 2 and connected with the locking sleeve 303. The driving assembly provides power for the locking sleeve 303 to move along the direction of the central axis of the locking sleeve 303, so that the relative movement between the locking sleeve 303 and the positioning sleeve 301 is generated. At least one retreat groove 3031 for the locking bead 302 to retreat is arranged on the inner side wall of the locking sleeve 303. The same number of clamping grooves 3011 as the retreat grooves 3031 are arranged on the outer side wall of the positioning sleeve 301. One locking bead 302 is placed in each clamping groove 3011. The locking bead 302 is limited by the clamping groove 3011 and can only move in the clamping groove 3011 without being separated from the clamping groove 3011. The locking sleeve 303 has a first state and a second state under the driving of the driving assembly. In the first state, the retreat grooves 3031 and the clamping grooves 3011 are aligned one by one. Part of the locking bead 302 is located in the retreat groove 3031, and the other part of the locking bead 302 is located in the clamping groove 3011. In the second state, the retreat grooves 3031 and the clamping grooves 3011 are misaligned. Part of the locking bead 302 is located in the clamping groove 3011. The locking mechanism 3 and the locking guide pin 1023 constitute a set of locking devices. When in the locked state, the locking guide pin 1023 is inserted into the positioning sleeve 301. An annular locking groove 10232 is arranged on the locking guide pin 1023. Part of the locking bead 302 is located in the clamping groove 3011, and the other part of the locking bead 302 is located in the locking groove 10232. The locking bead 302 is limited by the inner wall of the locking sleeve 303 and the shape of the clamping groove 3011. The locking bead 302 can be clamped in the clamping groove 3011 and the locking groove 10232, so that the locking guide pin 1023 is clamped in the positioning sleeve 301. Specifically, the process of locking the locking guide pin 1023, the initial state of the locking mechanism 3 is the first state. The locking guide pin 1023 is inserted into the positioning sleeve 301 of the locking mechanism 3. The driving assembly drives the locking sleeve 303 to move. The locking sleeve 303 pushes the locking bead 302 on the locking mechanism 3 into the locking groove 10232 on the locking guide pin 1023. The state is switched from the first state to the second state and remains in the second state, so that the locking guide pin 1023 is locked.The unlocking process of the locking guide pin 1023, in the second state, the driving assembly drives the locking sleeve 303 on the locking mechanism 3, the second state switches to the first state, after the retreat groove 3031 on the locking sleeve 303 is aligned with the clamping groove 3011 on the positioning sleeve 301, the locking bead 302 retreats into the retreat groove 3031 on the locking sleeve 303, thereby realizing the function of unlocking. The structure of the electric box locking device is simple and durable, and the locking and unlocking process can be realized through the relative movement between the locking sleeve 303 and the positioning sleeve 301, and the locking and unlocking process is convenient to operate, thereby effectively avoiding the situation that the electric box locking device is stuck and cannot be unlocked.

[0049] As shown in Figure 2 , the locking mechanism 3 further comprises a connecting arm 304 and a plurality of connecting rods. The connecting rods are slidingly installed on the bracket 2, the central axis of the connecting rods is parallel to the central axis of the locking sleeve 303, and the sliding direction of the connecting rods is parallel to the central axis of the locking sleeve 303. The first end of the connecting rod is connected with the locking sleeve 303, and the second end of the connecting rod is connected with the connecting arm 304, and the driving assembly is connected with the connecting arm 304. The driving assembly can simultaneously drive a plurality of connecting rods by driving the connecting arm 304, and the structure is simple and durable. In a preferred embodiment, a through hole is formed in the bracket 2, the connecting rod is inserted into the through hole, one end of the connecting rod is limited by the through hole, and the other end of the connecting rod is limited by the locking sleeve 303, so that the connecting rod can only move along the central axis of the connecting rod. A limiting member such as a sliding groove can also be provided on the bracket 2, and the connecting rod is sleeved in the limiting member and can only move along the central axis of the connecting rod.

[0050] Preferably, the driving assembly can be a gas cylinder assembly, a motor assembly, a hydraulic assembly, etc. In the present application, the driving assembly is preferably a gas cylinder assembly, wherein the driving assembly comprises a driving cylinder and a driving rod 201. The cylinder body of the driving cylinder is installed on the bracket 2, and the central axis of the piston rod of the driving cylinder is collinear with the central axis of the locking sleeve 303. The first end of the driving rod 201 is connected with the piston rod of the driving cylinder, and the second end of the driving rod 201 is hinged with the connecting arm 304. The driving cylinder provides the same force to a plurality of connecting rods, ensuring smooth movement of the connecting rods and avoiding jamming of the connecting rods.

[0051] As shown in Figure 1 , the locking guide pin 1023 comprises a cylindrical pin body and a conical head 10231, the conical head 10231 is installed at the end of the cylindrical pin body, and the locking groove 10232 is installed on the side surface of the cylindrical pin body. When the locking guide pin 1023 is inserted into the positioning sleeve 301, the conical head 10231 can play a guiding role, and the cylindrical pin body can be quickly guided into the positioning sleeve 301 through the inclined surface of the conical head 10231, thereby improving the efficiency of inserting the locking guide pin 1023 into the positioning sleeve 301.

[0052] Further, as shown in Figure 3As shown, the application also provides a quick-change battery box 1, which comprises a box body 101, a first support device 102, a second support device, a first battery box locking device, and a second battery box locking device. The box body 101 is a cuboid or a square structure, which is matched with battery packs of different shapes, and the cuboid or square structure facilitates the array installation of the battery box and reduces the space occupied by multiple battery boxes. The first battery box locking device and the second battery box locking device are both the battery box locking device as described above, and the locking mechanism 3 of the battery box locking device is arranged on the vehicle or the electrical equipment, and is used to lock the box body 101 on the vehicle or the electrical equipment. Specifically, the first support device 102 and the second support device are respectively connected with a group of opposite side walls of the box body 101 one by one, and the first support device 102 and the second support device are symmetrical to each other. The locking guide pin 1023 of the first battery box locking device is installed on the first support device 102, and the locking guide pin 1023 of the second battery box locking device is installed on the second support device. When the box body 101 is installed on the vehicle or the electrical equipment, the first support device 102 abuts against the upper side of the first battery box locking device, the locking guide pin 1023 of the first battery box locking device is inserted into the positioning sleeve 301 of the first battery box locking device and is locked and fixed, the second support device abuts against the upper side of the second battery box locking device, and the locking guide pin 1023 of the second battery box locking device is inserted into the positioning sleeve 301 of the second battery box locking device and is locked and fixed. The box body 101 is installed on the locking mechanism 3 through the first support device 102 and the second support device, and the first support device 102 and the second support device provide effective support force for the box body 101, so as to ensure the stable and reliable installation of the box body 101. The box body 101 is quickly locked through the locking mechanism 3, and the number of locking mechanisms is reduced while ensuring the locking effect. When it is necessary to replace the battery box, the locking mechanism 3 is quickly unlocked, the operation is simple, and the replacement efficiency is effectively improved.

[0053] As shown, Figure 3 The first support device 102 and the second support device both comprise a support plate and a plurality of reinforcing ribs. The support plate is horizontally installed on the outer side wall of the box body 101, the reinforcing ribs are vertically installed on the upper surface of the support plate, and the reinforcing ribs are connected with the outer side wall of the box body 101. The reinforcing ribs improve the strength and rigidity of the support plate, while reducing the thickness of the support plate, reducing the weight of the support plate, avoiding the displacement of the box body 101 caused by the deformation of the support plate, and improving the stability of the installation of the box body 101. The locking guide pin 1023 is vertically installed on the lower surface of the support plate, and the locking guide pin 1023 is inserted into the positioning sleeve 301 downward when the box body 101 is installed, so as to quickly install and lock the box body 101 and improve the installation efficiency.

[0054] Further, as shown, Figure 4As shown, the first support device 102 and the second support device also each comprise an adjusting plate 1021, a power plug 1022 and a power socket 202. The adjusting plate 1021 is detachably mounted on the lower surface of the support plate, a plurality of waist-shaped holes parallel to each other are formed on the adjusting plate 1021, the adjusting plate 1021 is connected with the support plate through bolts, and the adjusting plate 1021 can be adjusted in position along the length direction of the waist-shaped holes. The power plug 1022 is connected with the battery pack through wires, the power socket 202 is connected with the electrical appliance through wires, the power plug 1022 is mounted on the lower surface of the adjusting plate 1021, the power socket 202 is mounted on the bracket 2, the positions of the power plug 1022 and the power socket 202 are matched, the power plug 1022 is inserted into the power socket 202 to make the battery and the electrical appliance communicate, the connection mode is simple, and the convenience of the installation of the box body 101 is further improved, so that the installation efficiency is improved. The power plug 1022 and the locking guide pin 1023 are both vertically mounted on the lower surface of the adjusting plate 1021, the positions of the power plug 1022 and the locking guide pin 1023 relative to the box body 101 are finely adjusted through the adjusting plate 1021, so as to ensure that the power plug 1022 is located directly above the power socket 202 and the locking guide pin 1023 is located directly above the positioning sleeve 301 when the box body 101 is installed, the power plug 1022 is quickly connected with the power socket 202, and the locking guide pin 1023 is locked and fixed by being guided into the positioning sleeve 301 through the conical head 10231.

[0055] As shown in Figure 2 , the upper end surface of the power socket 202 and the upper end surface of the positioning sleeve 301 are located in the same horizontal plane, the lower surface of the support plate contacts the upper end surface of the power socket 202 at the same time and also contacts the upper end surface of the positioning sleeve 301, and the structure is regular.

[0056] As shown in Figure 1 and Figure 5 , the quick-change power box 1 further comprises a plug-removal ear seat 103. The plug-removal ear seat 103 comprises an ear plate and a reinforcing plate, the ear plate is horizontally mounted on the outer side wall of the box body 101, and the reinforcing plate is vertically mounted on the upper surface of the ear plate and connected with the outer side wall of the box body 101. The reinforcing ribs reduce the thickness of the ear plate and improve the strength and rigidity of the ear plate. A positioning hole is formed on the ear plate.

[0057] The locking process of the locking guide pin 1023, the initial state of the locking mechanism 3 is the first state, the locking guide pin 1023 is inserted into the positioning sleeve 301 of the locking mechanism 3, the driving assembly drives the locking sleeve 303 to move, the locking sleeve 303 pushes the locking bead 302 on the locking mechanism 3 into the locking groove 10232 on the locking guide pin 1023, and the first state is switched to the second state and remains in the second state, so as to lock the locking guide pin 1023. The unlocking process of the locking guide pin 1023, in the second state, the driving assembly drives the locking sleeve 303 on the locking mechanism 3, the second state is switched to the first state, after the retreat groove 3031 on the locking sleeve 303 is aligned with the clamping groove 3011 on the positioning sleeve 301, the locking bead 302 retreats into the retreat groove 3031 on the locking sleeve 303, thereby realizing the unlocking function. The electric box locking device has simple and durable structure, the locking and unlocking processes can be realized through the relative movement between the locking sleeve 303 and the positioning sleeve 301, the locking and unlocking processes are convenient to operate, thereby effectively avoiding the situations that the electric box locking device is stuck and cannot be unlocked. The box body 101 is installed on the locking mechanism 3 through the first supporting device 102 and the second supporting device, the first supporting device 102 and the second supporting device provide effective supporting force for the box body 101, and the installation of the box body 101 is stable and reliable. The box body 101 is quickly locked through the locking mechanism 3, the number of locking mechanisms is reduced under the condition of ensuring the locking effect. When the electric box needs to be replaced, the locking mechanism 3 is quickly unlocked, the operation is simple, and the replacement efficiency is effectively improved.

[0058] In the description of the present application, it should be understood that the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second" can be explicitly or implicitly included one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0059] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium; it can be the communication inside two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0060] In the present application, unless otherwise explicitly specified and limited, a first feature is "on" or "under" a second feature can mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature is "over", "above" and "on top of" a second feature can mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature. A first feature is "under", "below" and "underneath" a second feature can mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is horizontally lower than the second feature.

[0061] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "embodiment", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the present specification and the features of the different embodiments or examples without contradiction.

[0062] Although the embodiments of the present application have been shown and described above, it is understood that the above-described embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above-described embodiments within the scope of the present application.

Claims

1. An electrical box locking device, characterized in that, The electrical box locking device includes: support; A locking mechanism includes a positioning sleeve, a locking sleeve, a driving assembly, and locking beads. The positioning sleeve is fixedly mounted on the bracket, and the locking sleeve is slidably mounted on the outside of the positioning sleeve. The driving assembly is mounted on the bracket and can drive the locking sleeve to move along the direction of the central axis of the locking sleeve. At least one return groove is provided on the inner sidewall of the locking sleeve, and at least one slot is provided on the outer sidewall of the positioning sleeve. Each slot contains a locking bead. The locking sleeve has a first state and a second state under the drive of the driving assembly. In the first state, the return groove and the slot are aligned one-to-one, with a portion of the locking bead located in the return groove and another portion in the slot. In the second state, the return groove and the slot are misaligned, with a portion of the locking bead located in the slot. A locking guide pin is provided, which can be sleeved inside the positioning sleeve, and the locking guide pin has an annular locking groove; in the second state, another part of the locking ball is located in the locking groove. The locking mechanism also includes a connecting arm and multiple connecting rods; The connecting rod is slidably mounted on the bracket, the central axis of the connecting rod is parallel to the central axis of the locking sleeve, and the sliding direction of the connecting rod is parallel to the central axis of the locking sleeve. The first end of the connecting rod is connected to the locking sleeve, the second end of the connecting rod is connected to the connecting arm, and the driving assembly is connected to the connecting arm.

2. The electrical box locking device as described in claim 1, characterized in that, The drive assembly includes a drive cylinder and a drive rod; The cylinder body of the drive cylinder is mounted on the bracket, and the central axis of the piston rod of the drive cylinder is collinear with the central axis of the locking sleeve. The first end of the drive rod is connected to the piston rod of the drive cylinder, and the second end of the drive rod is hinged to the connecting arm.

3. The electrical box locking device as described in claim 1 or 2, characterized in that, The locking guide pin includes a columnar pin body and a tapered head, the tapered head being disposed at the end of the columnar pin body, and the locking groove being disposed on the side of the columnar pin body.

4. A quick-swap electrical box, characterized in that, The quick-change electrical box includes a box body, a first support device, a second support device, a first electrical box locking device, and a second electrical box locking device; the box body is a cuboid or cube structure, and the first electrical box locking device and the second electrical box locking device are both electrical box locking devices as described in any one of claims 1-3; The first support device and the second support device are respectively connected to a set of opposite side walls of the box body; The first support device abuts against the top of the first electrical box locking device, and the second support device abuts against the top of the second electrical box locking device; The locking guide pin of the first electrical box locking device is disposed on the first support device, and the locking guide pin of the second electrical box locking device is disposed on the second support device.

5. The quick-change electrical box as described in claim 4, characterized in that, Both the first support device and the second support device include a support plate and multiple reinforcing ribs; The support plate is horizontally disposed on the outer side wall of the box body, and the reinforcing rib is vertically disposed on the upper surface of the support plate, and the reinforcing rib is connected to the outer side wall of the box body; The locking guide pin is vertically disposed on the lower surface of the support plate.

6. The quick-change electrical box as described in claim 5, characterized in that, Both the first support device and the second support device further include an adjustment plate, a power plug, and a power socket; The adjustment plate is detachably disposed on the lower surface of the support plate, the power plug is disposed on the lower surface of the adjustment plate, the power socket is disposed on the bracket, the positions of the power plug and the power socket are matched, and the power plug can be inserted into the power socket; The locking guide pin is vertically positioned on the lower surface of the adjusting plate.

7. The quick-swap electrical box as described in claim 6, characterized in that, The upper surface of the power socket and the upper surface of the positioning sleeve are located in the same horizontal plane.

8. The quick-swap electrical box as described in any one of claims 4-7, characterized in that, The quick-change electrical box also includes a plug-in ear socket; The insertion ear socket includes an ear plate and a reinforcing plate. The ear plate is horizontally disposed on the outer side wall of the housing, and the reinforcing plate is vertically disposed on the upper surface of the ear plate and connected to the outer side wall of the housing.

9. The quick-change electrical box as described in claim 8, characterized in that, The ear plate has positioning holes.

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