Locking device of electric heavy truck battery replacing system and electric heavy truck

Abstract

The utility model discloses a locking device of a battery replacing system of an electric heavy truck and the electric heavy truck, and relates to the technical field of vehicles. According to the battery box locking device, under the condition that the linear driver retracts, the sliding block does linear motion close to the locking piece, at the moment, the inclined face exerts abutting force on the locking piece, the locking piece rotates to abut against the locking plate, the locking plate exerts locking force on the battery box, and therefore the battery box can be locked. And the reset spring is in a stretched state. And under the condition that the linear driver extends out, the sliding block does linear motion far away from the locking piece, and the locking piece is driven to rotate far away from the locking plate through the deformation restoring force of the reset spring, so that the locking of the battery box body is relieved. Therefore, on the basis of ensuring that the adjustment amplitude of the locking device in the height direction is small, the locking force on the battery box body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a locking device for an electric heavy truck battery swapping system and an electric heavy truck vehicle. Background Art

[0002] Currently, there are mainly two modes for electric heavy truck vehicles in China: charging and battery swapping. For example, for a charging-type electric heavy truck vehicle, its battery box generally adopts a left-right side-hanging method and is completely fixed on the main longitudinal beam of the vehicle body. At the same time, the battery boxes on both left and right sides are connected by a cross beam. For a battery swapping-type electric heavy truck vehicle, its battery box mainly adopts two fixing methods. The first is to place it behind the cab, and the second is to place it below the carriage and on both left and right sides of the main longitudinal beam of the vehicle body. Moreover, for the battery box of a battery swapping-type electric heavy truck vehicle, since it needs to be frequently taken and placed, the key requirements for its installation are easy to grasp and high connection firmness.

[0003] However, when the battery box for battery swapping is installed on the frame, constraints are required in the X, Y, and Z directions of the whole vehicle. Among them, in the Z direction (which can also be understood as the height direction of the vehicle), due to space limitations, the ground clearance between the battery box and the carriage hopper is relatively small, for example, about 20 cm. As a result, the locking device used to fix the battery box has limited adjustment in the height direction and small locking force. Summary of the Utility Model

[0004] In view of the problem that the locking device for the battery box for battery swapping is limited by space, has limited adjustment in the height direction, and has small locking force, the present utility model is proposed to provide a locking device for an electric heavy truck battery swapping system and an electric heavy truck vehicle that can overcome or at least partially solve the above problems.

[0005] Based on the first aspect of the present utility model, a locking device for an electric heavy truck battery swapping system is provided. The locking device includes:

[0006] A mounting seat;

[0007] A linear actuator fixed to the mounting seat;

[0008] A slide table and a slider, the slider is slidably connected to the slide table. Among them, a slope is provided on the slider, and the output shaft of the linear actuator is fixedly connected to the slider to drive the slider to perform a reciprocating linear motion along the slide table when the linear actuator expands and contracts;

[0009] A locking member, the locking member includes a first end, a second end, and a third end. Among them, the first end is rotatably connected to the mounting seat, and the second end forms an abutment with the slope;

[0010] A return spring, one end of the return spring is fixed on the locking member, and the other end is fixed on the sliding table;

[0011] A locking plate, the locking plate is located below the third end to form a pressing contact with the battery box body;

[0012] When the linear actuator retracts, the inclined surface exerts a resisting force on the locking member, causing the locking member to rotate and form an abutment with the locking plate, so that the locking plate exerts a locking force on the battery box body, and the return spring is in a stretched state;

[0013] When the linear actuator extends, the slider moves linearly away from the locking member, and the deformation restoring force of the return spring drives the locking member to rotate away from the locking plate to release the locking of the battery box body.

[0014] An optional utility model content, a receiving cavity is formed on the sliding table, the slider is located in the receiving cavity, and the locking device further includes:

[0015] A first bearing, the first bearing is embedded in the sliding table;

[0016] A first rotating shaft, the first rotating shaft penetrates through the slider and is fixed to the first bearing;

[0017] When the linear actuator drives the slider to move linearly, the first bearing rolls in the sliding table.

[0018] An optional utility model content, the first rotating shaft is a pin shaft, and the locking device further includes a first locking bolt, the first locking bolt is located on the end face of the first bearing away from the slider and is threadedly connected to the first rotating shaft.

[0019] An optional utility model content, a moving hole for the first bearing to roll is further formed on the sliding table, and the cross-sectional shape of the moving hole along the movement direction of the linear actuator is an oblong hole.

[0020] An optional utility model content, the locking device further includes:

[0021] A second rotating shaft, the second rotating shaft penetrates through the second end;

[0022] A second bearing, the second bearing is fixedly connected to the second rotating shaft, and when the locking member rotates, the second bearing rolls on the inclined surface.

[0023] An optional utility model content, wherein the second rotating shaft is a pin shaft, and the locking device further includes a second locking bolt, which is located on the end face of the second bearing away from the locking member and is threadedly connected to the second rotating shaft.

[0024] An optional utility model content, wherein the locking member includes a locking portion and a supporting portion;

[0025] The length direction of the locking portion is arranged parallel to the telescopic direction of the linear actuator. Among them, the end of the locking portion close to the sliding table is the second end, and the end face of the locking portion away from the sliding table is the third end;

[0026] The supporting portion is fixedly connected to the middle part of the locking portion, and the end of the supporting portion away from the locking portion is the first end.

[0027] An optional utility model content, wherein the locking device further includes a third pin shaft and a third locking bolt. The third pin shaft penetrates through the mounting seat and the supporting portion and is threadedly connected to the third locking bolt.

[0028] An optional utility model content, wherein the locking device further includes two fixing pins, which are respectively located on the locking member and the sliding table, and both ends of the return spring are respectively hooked on the two fixing pins.

[0029] Based on the second aspect of the present utility model, an electric heavy truck vehicle is further provided. The electric heavy truck vehicle includes the locking device of the electric heavy truck battery swapping system as described in the above utility model content.

[0030] Compared with the prior art, when the linear actuator retracts, the slider moves linearly towards the locking member. At this time, the inclined plane exerts a resisting force on the locking member, causing the locking member to rotate and form an abutment with the locking plate, so that the locking plate exerts a locking force on the battery box body, and the return spring is in a stretched state. When the linear actuator extends, the slider moves linearly away from the locking member, and through the deformation restoring force of the return spring, the locking member is driven to rotate away from the locking plate to release the locking of the battery box body. Thus, it can ensure that on the basis of a relatively small adjustment range in the height direction of the locking device, the locking force on the battery box body is improved.

[0031] The above description is only an overview of the technical solution of the present utility model. In order to be able to understand the technical means of the present utility model more clearly, it can be implemented according to the content of the specification. And in order to make the above and other purposes, features and advantages of the present utility model more obvious and understandable, the following specifically illustrates the specific embodiments of the present utility model. Brief Description of the Drawings

[0032] Upon reading the detailed description of the preferred embodiments below, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present utility model. Moreover, throughout the drawings, the same reference numerals are used to represent the same components.

[0033] In the drawings:

[0034] Figure 1 is a schematic structural view of a locking device of an electric heavy truck battery swapping system provided by an embodiment of the present utility model;

[0035] Figure 2 is an exploded structural view of a locking device of an electric heavy truck battery swapping system provided by an embodiment of the present utility model;

[0036] Figure 3 is a schematic structural view of a locking device of an electric heavy truck battery swapping system provided by an embodiment of the present utility model in a locked state;

[0037] Figure 4 is a schematic structural view of a locking device of an electric heavy truck battery swapping system provided by an embodiment of the present utility model in an unlocked state;

[0038] Reference numerals: 1, mounting base; 2, linear actuator; 3, slide table; 301, accommodation cavity; 302, moving hole; 4, slider; 401, inclined surface; 5, locking member; 501, first end; 502, second end; 503, third end; 51, locking portion; 52, supporting portion; 6, return spring; 7, locking plate; 8, first bearing; 9, first rotating shaft; 10, first locking bolt; 11, second rotating shaft; 12, second bearing; 13, second locking bolt; 14, third pin shaft; 15, third locking bolt; 16, fixing pin. Detailed embodiments

[0039] The exemplary embodiments of the present utility model will be described in more detail below with reference to the drawings. Although the exemplary embodiments of the present utility model are shown in the drawings, it should be understood that the present utility model can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present utility model and to fully convey the scope of the present utility model to those skilled in the art.

[0040] At present, there are mainly two modes for electric heavy-duty truck vehicles in China: charging and battery swapping. For example, for the charging-type electric heavy-duty truck vehicles, the battery boxes are generally hung on the left and right sides and are completely fixed on the main longitudinal beams of the vehicle body. At the same time, the battery boxes on the left and right sides are connected by cross beams. For the battery-swapping type electric heavy-duty truck vehicles, there are mainly two fixing methods for the battery boxes. The first is to place them behind the cab, and the second is to place them under the carriage, on the left and right sides of the main longitudinal beams of the vehicle body. Moreover, for the battery boxes of the battery-swapping type electric heavy-duty truck vehicles, since they need to be frequently taken and placed, the key requirements for their installation are easy to grasp and high connection firmness at the same time.

[0041] However, when the battery box for battery swapping is installed on the vehicle frame, constraints need to be made in the X, Y, and Z directions of the whole vehicle. Among them, in the Z direction (which can also be understood as the height direction of the vehicle), due to space limitations, the ground clearance between the battery box and the carriage hopper is relatively small, for example, about 20 cm. As a result, the locking device used to fix the battery box has limited adjustment in the height direction and small locking force.

[0042] Based on the above technical problems, the embodiments of the present invention are proposed. In the case where the linear actuator 2 retracts, the slider 4 makes a linear motion close to the locking member 5. At this time, the inclined surface 401 applies a pressing force to the locking member 5, causing the locking member 5 to rotate and form an abutment with the locking plate 7, so that the locking plate 7 applies a locking force to the battery box, and the return spring 6 is in a stretched state. In the case where the linear actuator 2 extends, the slider 4 makes a linear motion away from the locking member 5. Through the deformation restoring force of the return spring 6, the locking member 5 is driven to rotate away from the locking plate 7 to release the locking of the battery box. Thus, on the basis of ensuring that the adjustment range of the locking device in the height direction is small, the locking force on the battery box can be increased.

[0043] Refer to Figures 1-4 The embodiments of the present invention provide a locking device for an electric heavy-duty truck battery swapping system. The locking device may include a mounting base 1, a linear actuator 2, a slide table 3, a slider 4, a locking member 5, a return spring 6, and a locking plate 7, where:

[0044] The linear actuator 2 is fixed to the mounting base 1, and the slider 4 is slidably connected to the slide table 3. Wherein, a slope 401 is provided on the slider 4, and the output shaft of the linear actuator 2 is fixedly connected to the slider 4, so as to drive the slider 4 to perform a reciprocating linear motion along the slide table 3 when the linear actuator 2 expands and contracts. The locking member 5 includes a first end 501, a second end 502 and a third end 503. Wherein, the first end 501 is rotatably connected to the mounting base 1, and the second end 502 abuts against the slope 401. One end of the return spring 6 is fixed to the locking member 5, and the other end is fixed to the slide table 3. The locking plate 7 is located below the third end 503 to press against the battery box body.

[0045] In the embodiment of the present invention, the linear actuator 2 is used to output a linear motion. For example, the linear actuator 2 may include, but is not limited to, linear actuating structures such as air cylinders, electric cylinders, and oil cylinders. Correspondingly, the power source may be on-vehicle compressed air, on-vehicle power supply, or hydrostatic pressure, etc. No further limitation is made here.

[0046] The mounting base 1 is used to provide an assembly space for the linear actuator 2. Wherein, the slider 4 is fixedly connected to the output shaft of the linear actuator 2, and the slider 4 is slidably connected to the slide table 3. Thus, when the linear actuator 2 works, it drives the slider 4 to perform a reciprocating linear motion along the slide table 3. For example, when the output shaft of the linear actuator 2 extends, the slider 4 performs a linear motion away from the mounting base 1 along the slide table 3. When the output shaft of the linear actuator 2 retracts, the slider 4 performs a linear motion close to the mounting base 1 along the slide table 3.

[0047] The locking member 5 may include a first end 501, a second end 502 and a third end 503. Wherein, the first end 501 of the locking member 5 is rotatably connected to the mounting base 1, and the second end 502 of the locking member 5 abuts against the slope 401. The locking plate 7 is located below the third end 503. The locking plate 7 is used to apply a downward pressing force to abut against the battery box body, so as to lock the battery box body. For example, the battery box body is located in a fixed box body with an upward opening. After the battery box body is placed into the fixed box body, the locking plate 7 is covered, and the battery box body is locked by pressing down the locking plate 7.

[0048] One end of the return spring 6 is fixed to the locking member 5, and the other end is fixed to the sliding table 3. Thus, the distance between the locking member 5 and the sliding table 3 can be controlled by the return spring 6. For example, when the linear actuator 2 retracts, the slider 4 moves linearly closer to the linear actuator 2. Under the pulling force of the return spring 6, the inclined surface 401 of the slider 4 remains in contact with the second end 502 of the locking member 5, and thus the locking member 5 is driven to rotate around the third end 503 by the contact force. And the third end 503 of the locking member 5 approaches the locking plate 7 and forms a contact with the locking plate 7, so that the locking plate 7 locks the battery box body.

[0049] When the linear actuator 2 extends, the slider 4 moves linearly away from the locking member 5. The inclined surface 401 of the slider 4 cancels the contact force on the third end 503 of the locking member 5, and drives the locking member 5 to rotate away from the locking plate 7 through the deformation restoring force of the return spring 6 (converted from the stretched state to the initial state), so that the contact force of the locking plate 7 on the battery box body can be released, that is, the locking of the battery box body is released. Thus, on the basis that the adjustment range of the locking device in the height direction is small, the locking force on the battery box body can be increased, and unlocking is facilitated.

[0050] Moreover, the setting of the locking plate 7 can increase the pressing contact area with the battery box body, so that the structural stability of the locking device is higher. And the structure is simple. The locking and unlocking of the battery box body can be completed by one linear actuator 2, with a simple structure and low failure rate. In addition, the locking device has low requirements for the bottom flatness and positioning accuracy of the battery box body, which can reduce the processing difficulty of the battery box base.

[0051] An optional utility model content, referring to Figure 1 and Figure 2 As shown, a receiving cavity 301 is formed on the sliding table 3. The slider 4 is located in the receiving cavity 301. The locking device may further include a first bearing 8 and a first rotating shaft 9. The first bearing 8 is embedded in the sliding table 3. The first rotating shaft 9 penetrates through the slider 4 and is fixed to the first bearing 8. When the linear actuator 2 drives the slider 4 to move linearly, the first bearing 8 rolls in the sliding table 3.

[0052] In the embodiment of the present utility model, a receiving cavity 301 is formed on the sliding table 3. The slider 4 is located in the receiving cavity 301. For example, the slider 4 can be in clearance fit with the receiving cavity 301, so that the movement direction of the slider 4 can be defined by the receiving cavity 301.

[0053] The locking device may further include a first bearing 8 and a first rotating shaft 9. The first bearing 8 is embedded in the sliding table 3. The first rotating shaft 9 passes through the slider 4, and the first bearing 8 is sleeved on the first rotating shaft 9. For example, the first bearing 8 may be sleeved on the first rotating shaft 9, and an interference fit may be formed between the inner ring of the first bearing 8 and the first rotating shaft 9. Thus, during the process of the linear actuator 2 driving the slider 4 to perform reciprocating linear motion, the first bearing 8 can roll on the sliding table 3, thereby reducing the movement friction of the slider 4.

[0054] An optional utility model content, referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 as shown, the first rotating shaft 9 is a pin shaft. The locking device further includes a first locking bolt 10. The first locking bolt 10 is located on the end face of the first bearing 8 away from the slider 4 and is threadedly connected to the first rotating shaft 9.

[0055] In the embodiment of the present utility model, the first rotating shaft 9 may be a pin shaft, thereby facilitating the disassembly and assembly of the first rotating shaft 9. For example, the first rotating shaft 9 passes through the slider 4, a limit is formed between the top of the first rotating shaft 9 and the first bearing 8, and an external thread is provided at the tip of the first rotating shaft 9. Thus, after the assembly of the first bearing 8 is completed, the first locking bolt 10 is installed on the end face of the first bearing 8 away from the slider 4, and the first locking bolt 10 is in threaded cooperation with the external thread on the first rotating shaft 9, thereby realizing the threaded connection between the first locking bolt 10 and the first rotating shaft 9.

[0056] An optional utility model content, referring to Figure 1 、 Figure 2 、 Figure 3 and Figure 4 as shown, a moving hole 302 for the first bearing 8 to roll is further formed on the sliding table 3. The cross-sectional shape of the moving hole 302 along the movement direction of the linear actuator 2 is an oblong hole.

[0057] In the embodiment of the present utility model, the cross-sectional shape of the moving hole 302 along the movement direction of the linear actuator 2 is an oblong hole. In other words, the movement stroke of the slider 4 is restricted by the moving hole 302. For example, referring to Figure 3 and Figure 4As shown, when the first bearing 8 rolls to the leftmost side of the moving hole 302, the linear actuator 2 is in a fully retracted state. When the first bearing 8 rolls to the rightmost side of the moving hole 302, the linear actuator 2 is in a fully extended state.

[0058] An alternative utility model content, referring to Figure 1 、 Figure 2 and Figure 3 As shown, the locking device may further include a second rotating shaft 11 and a second bearing 12. The second rotating shaft 11 passes through the second end 502. The second bearing 12 is fixedly connected to the second rotating shaft 11. When the locking member 5 rotates, the second bearing 12 rolls on the inclined surface 401.

[0059] In an embodiment of the present utility model, the locking device may further include a second bearing 12 and a second rotating shaft 11. The second rotating shaft 11 passes through the second end 502 of the locking member 5, and the second bearing 12 is sleeved on the second rotating shaft 11. For example, the second bearing 12 may be sleeved on the second rotating shaft 11, and an interference fit may be formed between the inner ring of the second bearing 12 and the second rotating shaft 11. Thus, during the process of the linear actuator 2 driving the slider 4 to perform a reciprocating linear motion, the second bearing 12 can roll on the inclined surface 401 of the slider 4, thereby reducing the movement friction of the slider 4. Thereby, the locking force of the locking structure is increased. And when the locking device is in a locked state, that is, when it abuts against the locking plate 7, since the second bearing 12 always abuts against the inclined surface 401 of the slider 4, it is equivalent to a self-locking function, so that the locking device will not cause locking failure even under long-term vibration conditions. The locking firmness of the locking device is improved.

[0060] An alternative utility model content, referring to Figure 1 、 Figure 2 and Figure 3 As shown, the second rotating shaft 11 is a pin shaft, and the locking device further includes a second locking bolt 13. The second locking bolt 13 is located on the end surface of the second bearing 12 away from the locking member 5 and is threadedly connected to the second rotating shaft 11.

[0061] In an embodiment of the present utility model, the second rotating shaft 11 may be a pin shaft, whereby the disassembly and assembly of the second rotating shaft 11 can be facilitated. For example, the second rotating shaft 11 is passed through the locking member 5, and the second bearings 12 are installed on both sides of the second rotating shaft 11. A limit is formed between the top of the second rotating shaft 11 and the second bearing 12. The tip of the second rotating shaft 11 is provided with an external thread. Thus, after the assembly of the second bearing 12 is completed, the second locking bolt 13 is installed on the end face of the second bearing 12 away from the locking member 5, and the second locking bolt 13 is in threaded engagement with the external thread on the second rotating shaft 11, thereby realizing the threaded connection between the second locking bolt 13 and the second rotating shaft 11.

[0062] An optional utility model content, referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the locking member 5 may include a locking portion 51 and a supporting portion 52. The length direction of the locking portion 51 is arranged parallel to the telescopic direction of the linear actuator 2. Among them, the end of the locking portion 51 close to the slide 3 is the second end 502, and the end face of the locking portion 51 away from the slide 3 is the third end 503. The supporting portion 52 is fixedly connected to the middle portion of the locking portion 51, and the end of the supporting portion 52 away from the locking portion 51 is the first end 501.

[0063] In an embodiment of the present utility model, the locking member 5 may include a locking portion 51 and a supporting portion 52 fixed to the locking portion 51. Among them, the locking portion 51 extends along the telescopic direction of the linear actuator 2, that is, the length direction of the locking portion 51 is parallel to the telescopic direction of the linear actuator 2. The supporting portion 52 may extend downward from the middle portion of the locking portion 51. Thus, the supporting portion 52 extends to the mounting seat 1 and forms a rotational connection with the mounting seat 1. Thereby, when the linear actuator 2 makes a telescopic movement, the locking portion 51 can move synchronously with the inclined surface 401 of the slider 4, and the supporting portion 52 rotates to adapt to the movement of the locking portion 51.

[0064] The end of the locking portion 51 close to the slide 3 is the second end 502, and the end face of the locking portion 51 away from the slide 3 is the third end 503. Among them, the third end 503 is used to abut against the locking plate 7. The end face of the supporting portion 52 away from the locking portion 51 is the first end 501. Among them, the supporting portion 52 may be separately arranged along the width direction of the slider 4, thereby forming a wrap around the linear actuator 2 in the vertical direction. Thus, the height of the locking device in the height direction can be reduced.

[0065] An optional utility model content, referring to Figure 1 and Figure 2 As shown, the locking device further includes a third pin 14 and a third locking bolt 15. The third pin 14 passes through the mounting seat 1 and the support portion 52, and is in threaded connection with the third locking bolt 15.

[0066] In the embodiment of the present utility model, the structural cooperation of the third pin 14 and the third locking bolt 15 can facilitate the disassembly and assembly of the third pin 14. For example, the third pin 14 is arranged to pass through the locking member 5 and the mounting seat 1. A limit is formed between the top of the third pin 14 and the locking member 5. The tip of the third pin 14 is provided with an external thread. After the assembly of the third pin 14 is completed, the third locking bolt 15 is installed at the external thread of the third pin 14, so that the third locking bolt 15 is in threaded connection with the third pin 14 through the threaded cooperation between the third locking bolt 15 and the external thread.

[0067] An optional utility model content, referring to Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the locking device further includes two fixing pins 16. The two fixing pins 16 are respectively located on the locking member 5 and the sliding table 3. Both ends of the return spring 6 are respectively hooked on the two fixing pins 16.

[0068] In the embodiment of the present utility model, the locking device includes at least two fixing pins 16, and the fixing pins 16 are used to fix both ends of the return spring 6. For example, one end of the return spring 6 is hooked on the fixing pin 16 located on the locking member 5, and the other end of the return spring 6 is hooked on the fixing pin 16 located on the sliding table 3. When assembling the return spring 6, one end of the return spring 6 can be first hooked on the first fixing pin 16, and then the first fixing pin 16 is welded to the locking member 5. Subsequently, the other end of the return spring 6 is hooked on the second fixing pin 16, and then the second fixing pin 16 is welded to the sliding table 3.

[0069] In order to improve the structural stability of the locking device, two sets of the return spring 6 can also be provided, which are respectively located on both sides of the locking member 5. Correspondingly, when two return springs 6 are provided, the number of fixing pins 16 is four.

[0070] The embodiment of the present utility model also discloses an electric heavy truck vehicle, which may include the locking device of the electric heavy truck battery swapping system described in any one of the above utility model embodiments.

[0071] In summary, the embodiments of the present utility model disclose a locking device for an electric heavy truck battery swapping system and an electric heavy truck vehicle. The locking device may include a mounting base 1, a linear actuator 2, a slide table 3, a slider 4, a locking member 5, a return spring 6, and a locking plate 7. The linear actuator 2 is fixed to the mounting base 1, and the slider 4 is slidably connected to the slide table 3. Wherein, a slope 401 is provided on the slider 4, and the output shaft of the linear actuator 2 is fixedly connected to the slider 4, so as to drive the slider 4 to perform a reciprocating linear motion along the slide table 3 when the linear actuator 2 expands and contracts. The locking member 5 includes a first end 501, a second end 502, and a third end 503. Wherein, the first end 501 is rotatably connected to the mounting base 1, and the second end 502 forms an abutment with the slope 401. One end of the return spring 6 is fixed to the locking member 5, and the other end is fixed to the slide table 3. The locking plate 7 is located below the third end 503 to press against the battery box body. Thus, when the linear actuator 2 retracts, the slider 4 performs a linear motion closer to the locking member 5. At this time, the slope 401 applies a abutting force to the locking member 5, causing the locking member 5 to rotate and form an abutment with the locking plate 7, so that the locking plate 7 applies a locking force to the battery box body, and the return spring 6 is in a stretched state. When the linear actuator 2 extends, the slider 4 performs a linear motion away from the locking member 5, and the deformation restoring force of the return spring 6 drives the locking member 5 to rotate away from the locking plate 7 to release the locking of the battery box body. Thereby, it can ensure that on the basis of a relatively small adjustment range in the height direction of the locking device, the locking force on the battery box body is improved.

[0072] Each embodiment in this specification is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0073] It is easy for those skilled in the art to think that any combination application of the above-mentioned various embodiments is feasible. Therefore, any combination among the above-mentioned various embodiments is an implementation scheme of the present utility model. However, due to space limitations, this specification does not elaborate on them one by one here.

[0074] In the specification provided here, a large number of specific details are described. However, it can be understood that the embodiments of the present utility model can be practiced without these specific details. In some instances, well-known methods, structures, and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0075] Similarly, it should be understood that, for the purpose of streamlining the present utility model and facilitating the understanding of one or more of the various utility model aspects, in the above description of the exemplary embodiments of the present utility model, the various features of the present utility model are sometimes grouped together into a single embodiment, figure, or description thereof.

[0076] In addition, those skilled in the art will appreciate that, although some of the embodiments described herein include certain features included in other embodiments but not others, the combination of features of different embodiments means that it is within the scope of the present utility model and forms different embodiments. For example, in the claims, any one of the claimed embodiments can be used in any combination.

Claims

1. A locking device for an electric heavy truck battery swapping system, characterized in that, The locking device includes: A mounting base (1); A linear drive (2) fixed to the mounting base (1); A sliding table (3) and a slider (4), the slider (4) is slidably connected to the sliding table (3), wherein, a slope (401) is provided on the slider (4), and the output shaft of the linear drive (2) is fixedly connected to the slider (4) to drive the slider (4) to perform a reciprocating linear motion along the sliding table (3) when the linear drive (2) expands and contracts; A locking member (5), the locking member (5) includes a first end (501), a second end (502) and a third end (503), wherein, the first end (501) is rotatably connected to the mounting base (1), and the second end (502) forms an abutment with the slope (401); A return spring (6), one end of the return spring (6) is fixed to the locking member (5), and the other end is fixed to the sliding table (3); A locking plate (7) located below the third end (503) to form a pressing contact with the battery box body; In the case where the linear drive (2) retracts, the slope (401) applies a abutting force to the locking member (5), causing the locking member (5) to rotate and form an abutment with the locking plate (7), so that the locking plate (7) applies a locking force to the battery box body, and the return spring (6) is in a stretched state; In the case where the linear drive (2) extends, the slider (4) performs a linear motion away from the locking member (5), and the deformation restoring force of the return spring (6) drives the locking member (5) to rotate away from the locking plate (7) to release the locking of the battery box body.

2. The locking device of the electric heavy truck battery swapping system according to claim 1, characterized in that, A receiving cavity (301) is formed on the sliding table (3), the slider (4) is located in the receiving cavity (301), and the locking device further includes: A first bearing (8) embedded in the sliding table (3); A first rotating shaft (9) passing through the slider (4) and fixed to the first bearing (8); In the case where the linear drive (2) drives the slider (4) to perform a linear motion, the first bearing (8) rolls in the sliding table (3).

3. The locking device of the electric heavy-duty truck battery swapping system according to claim 2, characterized in that, The first rotating shaft (9) is a pin shaft, and the locking device further includes a first locking bolt (10) located on the end face of the first bearing (8) away from the slider (4) and threadedly connected to the first rotating shaft (9).

4. The locking device of the electric heavy truck battery swapping system according to claim 2, characterized in that, A moving hole (302) for the first bearing (8) to roll is further formed on the sliding table (3), and the cross-sectional shape of the moving hole (302) along the movement direction of the linear drive (2) is an oblong hole.

5. The locking device of the electric heavy truck battery swapping system according to claim 1, characterized in that, The locking device further includes: A second rotating shaft (11) passing through the second end (502); The second bearing (12), the second bearing (12) is fixedly connected to the second rotating shaft (11), and when the locking member (5) makes a rotational movement, the second bearing (12) rolls on the inclined surface (401).

6. The locking device of the electric heavy truck battery swapping system according to claim 5, characterized in that, The second rotating shaft (11) is a pin shaft, and the locking device further includes a second locking bolt (13). The second locking bolt (13) is located on the end surface of the second bearing (12) away from the locking member (5) and is threadedly connected to the second rotating shaft (11).

7. The locking device of the electric heavy truck battery swapping system according to claim 1, characterized in that, The locking member (5) includes a locking portion (51) and a supporting portion (52); The length direction of the locking portion (51) is arranged parallel to the telescopic direction of the linear actuator (2). Wherein, the end of the locking portion (51) close to the slide table (3) is the second end (502), and the end surface of the locking portion (51) away from the slide table (3) is the third end (503); The supporting portion (52) is fixedly connected to the middle portion of the locking portion (51), and the end of the supporting portion (52) away from the locking portion (51) is the first end (501).

8. The locking device of the electric heavy truck battery swapping system according to claim 7, characterized in that, The locking device further includes a third pin shaft (14) and a third locking bolt (15). The third pin shaft (14) passes through the mounting seat (1) and the supporting portion (52) and is threadedly connected to the third locking bolt (15).

9. The locking device of the electric heavy truck battery swapping system according to claim 1, characterized in that, The locking device further includes two fixing pins (16). The two fixing pins (16) are respectively located on the locking member (5) and the slide table (3), and the two ends of the return spring (6) are respectively hooked on the two fixing pins (16).

10. An electric heavy-duty truck vehicle, characterized in that, The electric heavy truck vehicle includes the locking device of the electric heavy truck battery swapping system according to any one of claims 1-9.

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