A fixed locking structure for a battery replacement base of a commercial vehicle

Abstract

The present invention relates to the technical field of battery-swap bases for commercial vehicles, and specifically to a fixed locking structure for a battery-swap base for commercial vehicles, comprising a base frame, a support rod fixedly connected to the inner side of the base frame, a socket opened in the upper end of the support rod, a plurality of flaps arranged on both sides of the support rod, a gear rod fixedly connected to both ends of the flap, the gear rod movably connected to the base frame, and a connecting mechanism arranged on one side of the flap; through the cooperation of the gear plate and the push spring, when the battery pack is not installed in the base frame, the plurality of flaps will be in a vertical state, so that hard objects in the external environment will not be preserved after falling into the base frame, and when the battery pack enters the base frame, the extrusion transmission mechanism moves downward to squeeze the gear plate first, and the gear plate moves after being squeezed and causes the plurality of flaps to flip and close, so as to prevent the battery pack from being damaged when being pressed down during the installation process.

Description

Technical Field

[0001] The present invention relates to the technical field of a battery replacement base for a commercial vehicle, and specifically to a fixed locking structure for a battery replacement base for a commercial vehicle. Background Art

[0002] For example, the Chinese patent with announcement number CN220053575U discloses a bottom bracket fixing lock structure, which relates to the field of electric truck battery replacement technology. The bottom bracket fixing lock structure includes a transmission box, a power connection mechanism and a horizontal correction mechanism. A placement plate is arranged above the transmission box, and a first cavity and a second cavity are opened inside the transmission box. A battery pack is carried on the top of the placement plate. The horizontal correction mechanism is arranged inside the first cavity. The horizontal correction mechanism includes a first motor, a bidirectional screw and a threaded block. The first motor is fixedly installed on the outer surface of one side of the transmission box, and a bidirectional screw is rotatably installed between the inner walls on both sides of the first cavity.

[0003] However, the above scheme has the following shortcomings: in the above patent, the new battery pack is moved to the placement plate, the second hydraulic rod and the first motor are controlled to complete the front, rear, left and right correction of the battery pack, the second motor is controlled to make the battery pack on the placement plate move down and connect with the circuit socket, and the first hydraulic rod is controlled to make the buckling plate move down and buckle on the top of the battery pack to fix the battery pack. However, during the battery replacement operation of the electric vehicle, when the battery replacement base is removed, due to external environment and other reasons, if a relatively hard object falls to the upper surface of the placement plate, the battery pack may be unable to be connected to the circuit socket during the process of being positioned and corrected and moved downward. At the same time, when the battery pack is buckled and fixed under the plate, the hard object on the upper surface of the placement plate may cause damage to the outer surface of the battery pack, thereby increasing the probability of the battery pack being in a dangerous situation when in use. For this reason, we have introduced a fixed locking structure for a battery replacement base for commercial vehicles. Summary of the invention

[0004] The object of the present invention is to provide a fixed locking structure for a battery replacement base of a commercial vehicle to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fixed locking structure for a battery replacement base for commercial vehicles, comprising a base frame, a support rod is fixedly connected to the inner side of the base frame, a socket is provided in the upper end of the support rod, a plurality of flaps are provided on both sides of the support rod, a gear rod is fixedly connected to both ends of the flap, the gear rod is movably connected to the base frame, a connecting mechanism is provided in one side of the flap, a connecting groove is provided in the side of the flap away from the connecting mechanism, a plurality of flaps are connected to each other by being clamped in the connecting groove through the connecting mechanism, a plug-in groove is provided on the inner side of the base frame and one side of the support rod, and the connecting mechanism close to the base frame and the support rod is plugged into the plug-in groove;

[0006] One end of the connecting mechanism is in contact with the pushing mechanism, and the pushing mechanism is arranged in the flap. One end of the pushing mechanism passes through the gear rod and extends into the connecting cavity. The outer frame of the bottom bracket is provided with connecting cavities on both sides. The connecting cavity is movably connected with an extrusion transmission mechanism, and the lower end of the connecting cavity is movably connected with a toothed plate. The upper end of the toothed plate is meshed with a plurality of gear rods, and one end of the toothed plate is arranged in an inclined shape. After the extrusion transmission mechanism moves downward, the toothed plate is first squeezed, and after being squeezed, the toothed plate moves and causes a plurality of flaps to flip and close, and the extrusion transmission mechanism squeezes the pushing mechanism again, so that the connecting mechanism is inserted into the connecting groove;

[0007] Two clamping mechanisms are arranged at the upper end of the bottom support outer frame, one end of the tooth plate is fixedly connected with a push spring, and the other end of the push spring is fixedly connected with the connecting cavity.

[0008] Furthermore, the connecting mechanism includes a T-shaped connecting plate, the T-shaped connecting plate is slidably connected to the T-shaped slot, the T-shaped slot is opened in the flap, the T-shaped connecting plate is fixedly connected to a connecting plate on one side close to the flap, the connecting plate extends into a give-way cavity at one end away from the flap and contacts with the pushing mechanism, the connecting plate is inclined at one end close to the pushing mechanism, the give-way cavity is opened in the flap, two return springs are fixedly connected to one side of the T-shaped connecting plate, and the other end of the return spring is fixedly connected to the T-shaped slot.

[0009] Furthermore, the pushing mechanism includes an L-shaped push rod, which is slidably connected in the yield cavity, and one end of the L-shaped push rod away from the connecting plate passes through the gear rod and extends into the external environment, and both ends of the L-shaped push rod are arranged in an inclined state.

[0010] Furthermore, a limiting block is fixedly connected to one side of the L-shaped push rod, the limiting block is slidably connected in a limiting groove, the limiting groove is opened in the flap, a limiting spring is fixedly connected in the limiting groove, one end of the limiting spring is fixedly connected to the limiting block, and the other end is fixedly connected to the limiting groove.

[0011] Furthermore, the extrusion transmission mechanism includes a lifting plate, which is slidably connected in the connecting cavity, and the lower end of the lifting plate is fixedly connected to a first extrusion rod and a plurality of second extrusion rods, respectively, the lower end of the first extrusion rod and one side of the second extrusion rod are both arranged in an inclined shape, and one side of the lifting plate is fixedly connected to two support plates, and the end of the support plate away from the lifting plate passes through a guide groove and extends to the inner side of the bottom support outer frame, and the guide groove is opened on the inner side of the bottom support outer frame, and the lower end of the lifting plate is fixedly connected to two support springs, and the other end of the support spring is fixedly connected to the connecting cavity.

[0012] Furthermore, the clamping mechanism includes a connecting block, and T-shaped pressure plates are movably connected in the opposite surfaces of the two connecting blocks. The lower end of the connecting block is fixedly connected to two guide rods, and the lower end of the guide rod is movably connected to a storage groove, and the storage groove is opened in the upper end of the bottom support outer frame.

[0013] Furthermore, the T-shaped pressure plate is slidably connected in the T-shaped limiting cavity, a first telescopic cylinder is fixedly connected in the T-shaped limiting cavity, an output end of the first telescopic cylinder is fixedly connected to the T-shaped pressure plate, a second telescopic cylinder is fixedly connected in the storage groove, and an output end of the second telescopic cylinder is fixedly connected to the connecting block.

[0014] Furthermore, locking grooves are provided at both ends of the connecting block, a T-shaped locking block is clamped in the locking groove, the T-shaped locking block is slidably connected in a sliding cavity, the sliding cavity is provided in a receiving groove, a connecting spring is fixedly connected in the sliding cavity, the other end of the connecting spring is fixedly connected to the T-shaped locking block, and an electromagnet is fixedly connected in the sliding cavity.

[0015] Compared with the prior art, the beneficial effect of the present invention is that: through the cooperation of the tooth plate and the pushing spring, when the battery pack is not installed in the bottom bracket outer frame, several flaps will be in a vertical state, so that hard objects in the external environment will not be preserved after falling into the bottom bracket outer frame; when the battery pack enters the bottom bracket outer frame, the extrusion transmission mechanism moves downward to first squeeze the tooth plate, and the tooth plate moves after being squeezed and makes several flaps flip and close, and the extrusion transmission mechanism then squeezes the pushing mechanism, so that the connecting mechanism is inserted into the connecting groove, so as to realize the mutual connection of several flaps; when the battery pack is taken out of the bottom bracket outer frame for replacement again, several flaps will flip to a vertical state again, so as to prevent relatively hard objects from being preserved in the bottom bracket outer frame during the installation process, causing damage to the battery pack when it is pressed down. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the three-dimensional structure of several flaps in the closed state of the present invention.

[0019] Figure 3 It is a schematic diagram of the three-dimensional structure of the bottom support frame of the present invention.

[0020] Figure 4 It is a three-dimensional structural schematic diagram of the connection relationship between the T-shaped connecting plate and the flap of the present invention.

[0021] Figure 5 It is a schematic diagram of the three-dimensional cross-sectional structure of the present invention.

[0022] Figure 6 It is a three-dimensional structural schematic diagram of the connection relationship between the flap and the gear rod of the present invention.

[0023] Figure 7 It is a three-dimensional structural schematic diagram of the connection relationship between the second telescopic cylinder and the connecting block of the present invention.

[0024] Figure 8 It is a three-dimensional structural schematic diagram of the connection relationship between the support plate and the lifting plate of the present invention.

[0025] Fig. 9 It is a schematic diagram of the top structure of the present invention.

[0026] Fig.10 It is a schematic diagram of the three-dimensional structure of the battery pack of the present invention.

[0027] Fig.11 It is a schematic diagram of the cross-sectional structure of the connecting block of the present invention.

[0028] Wherein: 1 bottom support frame, 2 support rod, 3 guide groove, 4 support plate, 5 connecting block, 6 T-type pressure plate, 7 second telescopic cylinder, 8 storage groove, 9 T-type connecting plate, 10 flap, 11 connecting cavity, 12 L-type push rod, 13 push spring, 14 lifting plate, 15 supporting spring, 16 second extrusion rod, 17 first extrusion rod, 18 tooth plate, 19 tooth rod, 20 limit block, 21 T-type limit cavity, 22 plug-in groove, 23 socket, 24 connecting groove, 25 give way cavity, 26 connecting plate, 27 limit groove, 28 limit spring, 29 reset spring, 30 T-type slide groove, 31 lock groove, 32 T-type lock block, 33 sliding cavity, 34 electromagnet, 35 connecting spring, 36 first telescopic cylinder, 37 guide rod, 38 battery pack, 39 card slot. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-11 , the present invention provides a technical solution:

[0031] Embodiment 1:

[0032] A fixed locking structure for a battery replacement base for a commercial vehicle includes a base frame 1, a support rod 2 is fixedly connected to the inner side of the base frame 1, a socket 23 is opened in the upper end of the support rod 2, a plug is provided at the lower end of a battery pack 38 (not shown in the figure), and slots 39 for connecting with a support plate 4 are respectively provided on both sides of the lower end of the battery pack 38. When the battery pack 38 is installed in the base frame 1, the plug at the lower end of the battery pack 38 will be inserted into the socket 23. A plurality of flaps 10 are provided on both sides of the support rod 2, and gear rods 19 are fixedly connected to both ends of the flap 10. The gear rod 19 is movably connected to the base frame 1, and a connecting mechanism is provided on one side of the flap 10. A connecting groove 24 is provided in the side away from the connecting mechanism, and a plurality of flaps 10 are connected to each other by being snapped into the connecting groove 24 through the connecting mechanism. When a plurality of flaps 10 are flipped from a vertical state to a horizontal state, a plurality of flaps 10 are connected and fixed to each other by being plugged into the connecting groove 24 through the connecting mechanism. A plugging groove 22 is provided on the inner side of the bottom bracket outer frame 1 and one side of the support rod 2. The connecting mechanism close to the bottom bracket outer frame 1 and the support rod 2 is plugged into the plugging groove 22. When a plurality of flaps 10 are flipped from a vertical state to a horizontal state, the connecting mechanism in the leftmost flap 10 and the flap 10 close to the right side of the support rod 2 will be snapped into the plugging groove 22.

[0033] One end of the connecting mechanism contacts with the pushing mechanism, which is arranged in the flap 10. One end of the pushing mechanism passes through the gear rod 19 and extends into the connecting cavity 11. The connecting cavities 11 are provided on both sides of the bottom bracket outer frame 1. The connecting cavity 11 is movably connected with an extrusion transmission mechanism. The lower end of the connecting cavity 11 is movably connected with a tooth plate 18. The upper end of the tooth plate 18 is meshed with a plurality of gear rods 19. One end of the tooth plate 18 is arranged in an inclined shape. After the extrusion transmission mechanism moves downward, the tooth plate 18 is first squeezed. After being squeezed, the tooth plate 18 moves to drive the plurality of gear rods 19 meshed at its upper end to rotate. The rotation of the gear rod 19 drives the flap 10 to rotate, so that the plurality of flaps 10 are turned over and closed. The extrusion transmission mechanism squeezes the pushing mechanism again. After the pushing mechanism is squeezed, the connecting mechanism is squeezed, so that the connecting mechanism is inserted into the connecting groove 24.

[0034] Two clamping mechanisms are set at the upper end of the bottom support outer frame 1. When the battery pack 38 enters the bottom support outer frame 1, the clamping mechanism will clamp the battery pack 38 from the upper end. One end of the tooth plate 18 is fixedly connected to the push spring 13, and the other end of the push spring 13 is fixedly connected to the connecting cavity 11. When the battery pack 38 is taken out from the bottom support outer frame 1, the tooth plate 18 returns to its original position under the elastic force of the push spring 13.

[0035] Embodiment 2:

[0036] On the basis of Example 1, in order to enable several flaps 10 to be connected to each other when flipping from a vertical state to a horizontal state, the connecting mechanism includes a T-shaped connecting plate 9, which is slidably connected to a T-shaped slot 30, and the T-shaped slot 30 is provided in the flap 10. A connecting plate 26 is fixedly connected to the side of the T-shaped connecting plate 9 close to the flap 10, and the connecting plate 26 extends into the clearance cavity 25 away from the end of the flap 10 and contacts the pushing mechanism. The connecting plate 26 is arranged in an inclined shape close to the end of the pushing mechanism, and the clearance cavity 25 is provided in the flap 10. Two return springs 29 are fixedly connected to one side of the T-shaped connecting plate 9, and the other end of the return spring 29 is fixedly connected to the T-shaped slot 30. When the flap 10 is in a vertical state, the two return springs 29 will push the T-shaped connecting plate 9 into the T-shaped slot 30, and the T-shaped connecting plate 9 moves to drive the connecting plate 26 into the clearance cavity 25.

[0037] The pushing mechanism includes an L-shaped push rod 12, which is slidably connected in the giving way cavity 25. The end of the L-shaped push rod 12 away from the connecting plate 26 passes through the toothed rod 19 and extends into the external environment. Both ends of the L-shaped push rod 12 are arranged in an inclined shape. When one side of the first extrusion rod 17 contacts one end of the toothed plate 18, the toothed plate 18 stops moving. At the same time, driven by the flap 10, the inclined surface of one end of the L-shaped push rod 12 will face the upper end. As the lifting plate 14 continues to move downward, a plurality of second extrusion rods 16 will contact the L-shaped push rod 12. At this time, the L-shaped push rod 12 will be squeezed to move inward, and the movement of the L-shaped push rod 12 will have an impact on the connecting plate 26. The connecting plate 26 is squeezed, and one side of the L-shaped push rod 12 is fixedly connected to the limiting block 20, and the limiting block 20 is slidably connected to the limiting groove 27. The limiting groove 27 is provided in the flap 10, and the limiting spring 28 is fixedly connected in the limiting groove 27. One end of the limiting spring 28 is fixedly connected to the limiting block 20, and the other end is fixedly connected to the limiting groove 27. When the battery pack 38 is taken out from the bottom bracket outer frame 1, under the elastic force of the limiting spring 28, the limiting block 20 will move outward along the limiting groove 27, and the movement of the limiting block 20 drives the L-shaped push rod 12 to move outward synchronously. At this time, one end of the L-shaped push rod 12 will re-extend into the connecting cavity 11;

[0038] The extrusion transmission mechanism includes a lifting plate 14, which is slidably connected to the connecting cavity 11. The lower end of the lifting plate 14 is fixedly connected to a first extrusion rod 17 and a plurality of second extrusion rods 16. The lower end of the first extrusion rod 17 and one side of the second extrusion rod 16 are both arranged in an inclined shape. One side of the lifting plate 14 is fixedly connected to two support plates 4. The end of the support plate 4 away from the lifting plate 14 passes through the guide groove 3 and extends into the inner side of the bottom bracket outer frame 1. The guide groove 3 is opened on the inner side of the bottom bracket outer frame 1. The lower end of the lifting plate 14 is fixedly connected to two support springs 15. The other end of the support spring 15 The end is fixedly connected to the connecting cavity 11, pressing the battery pack 38 downward, the battery pack 38 moves downward to drive the support plate 4 to move, the support plate 4 moves to drive the lifting plate 14 to move, the lifting plate 14 moves to drive the first extrusion rod 17 and the second extrusion rod 16 to move, because one end of the L-shaped push rod 12 extends into the connecting cavity 11 on one side, and a tooth plate 18 is also provided in the connecting cavity 11 on this side, because the length of the first extrusion rod 17 is greater than the length of the second extrusion rod 16, when the lifting plate 14 moves downward, the first extrusion rod 17 will first contact with the tooth plate 18;

[0039] The clamping mechanism includes a connecting block 5, and two connecting blocks 5 are movably connected with a T-shaped pressing plate 6 in the opposite surfaces. The lower end of the connecting block 5 is fixedly connected to two guide rods 37, and the lower end of the guide rod 37 is movably connected to the storage groove 8. The storage groove 8 is arranged in the upper end of the bottom bracket outer frame 1. The first telescopic cylinder 36 is controlled to drive the T-shaped pressing plate 6 to extend from the T-shaped limit cavity 21, and the second telescopic cylinder 7 is controlled to drive the connecting block 5 to be re-entered into the storage groove 8. When the connecting block 5 moves downward, it will drive the T-shaped pressing plate 6 to be pressed on the top of the battery pack 38;

[0040] The T-shaped pressing plate 6 is slidably connected in the T-shaped limiting cavity 21, a first telescopic cylinder 36 is fixedly connected in the T-shaped limiting cavity 21, an output end of the first telescopic cylinder 36 is fixedly connected to the T-shaped pressing plate 6, a second telescopic cylinder 7 is fixedly connected in the receiving groove 8, and an output end of the second telescopic cylinder 7 is fixedly connected to the connecting block 5;

[0041] Locking grooves 31 are provided at both ends of the connecting block 5, and a T-shaped locking block 32 is clamped in the locking groove 31. The T-shaped locking block 32 is slidably connected to the sliding cavity 33, and the sliding cavity 33 is provided in the storage groove 8. A connecting spring 35 is fixedly connected to the sliding cavity 33, and the other end of the connecting spring 35 is fixedly connected to the T-shaped locking block 32. An electromagnet 34 is fixedly connected to the sliding cavity 33. When the connecting block 5 completely enters the storage groove 8, the electromagnet 34 is turned off to cancel the attraction of the T-shaped locking block 32. Under the elastic force of the connecting spring 35, the T-shaped locking block 32 is clamped into the locking groove 31 to limit the connecting block 5. At this time, the battery pack 38 is locked into the bottom bracket outer frame 1, and the plug at the lower end of the battery pack 38 will be inserted into the socket 23.

[0042] Working principle: when the battery pack 38 needs to be installed, the first telescopic cylinder 36 is opened to drive the T-shaped pressing plate 6 connected to its output end to be retracted into the T-shaped limiting cavity 21, and the battery pack 38 is hoisted into the bottom bracket outer frame 1, so that the support plate 4 that pops up upward is clamped into the clamping groove 39 set at the lower end of the battery pack 38. After the hoisting is completed, the battery pack 38 is pressed downward, and the battery pack 38 moves downward to drive the support plate 4 to move, and the movement of the support plate 4 drives the lifting plate 14 to move, and the movement of the lifting plate 14 drives the first extrusion rod 17 and the second extrusion rod 16 to move. Since one end of the L-shaped push rod 12 extends into the connecting cavity 11 on one side, a tooth plate 18 is also provided in the connecting cavity 11 on this side;

[0043] Since the length of the first extrusion rod 17 is greater than that of the second extrusion rod 16, when the lifting plate 14 moves downward, the first extrusion rod 17 will first contact the toothed plate 18. Since one end of the toothed plate 18 and the lower end of the first extrusion rod 17 are both arranged in an inclined shape, after the first extrusion rod 17 contacts one end of the toothed plate 18, the toothed plate 18 will be pushed to start moving, so that the push spring 13 is compressed. When the toothed plate 18 moves, it drives the several toothed rods 19 meshed at its upper end to start moving. At this time, several flaps 10 will flip from a vertical state to a horizontal state. When one side of the first extrusion rod 17 contacts one end of the toothed plate 18, the toothed plate 18 stops moving. At the same time, driven by the flap 10, the inclined surface of one end of the L-shaped push rod 12 will face the upper end.

[0044] As the lifting plate 14 continues to move downward, several second extrusion rods 16 will contact the L-shaped push rod 12. At this time, the L-shaped push rod 12 will be squeezed and moved inward. The L-shaped push rod 12 moves to squeeze the connecting plate 26. At this time, the T-shaped connecting plate 9 will be inserted into the corresponding connecting groove 24, and the T-shaped connecting plate 9 close to the plug-in groove 22 will be inserted into the corresponding plug-in groove 22, so that several flaps 10 are fixed and limited. The first telescopic cylinder 36 is controlled to drive the T-shaped pressing plate 6 to extend out of the T-shaped limiting cavity 21. The second telescopic cylinder 7 drives the connection block 5 to be retracted into the storage slot 8. When the connection block 5 moves downward, it drives the T-shaped pressure plate 6 to press on the top of the battery pack 38. When the connection block 5 is completely entered into the storage slot 8, the electromagnet 34 is turned off to cancel the attraction of the T-shaped locking block 32. Under the elastic force of the connecting spring 35, the T-shaped locking block 32 is clamped into the locking slot 31 to limit the connection block 5. At this time, the battery pack 38 is locked into the bottom bracket outer frame 1, and the plug at the lower end of the battery pack 38 is inserted into the socket 23.

[0045] When the battery pack 38 is taken out from the bottom bracket frame 1, under the elastic force of the support spring 15, the lifting plate 14 will return to its original position upward, and at the same time, the T-shaped connecting plate 9 will be re-entered into the T-shaped slide groove 30, and several flaps 10 will also be flipped from the horizontal state to the vertical state.

[0046] The above embodiments are only used to help understand the method and core idea of ​​the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A fixed locking structure for a battery replacement base for commercial vehicles, comprising a base frame, characterized in that: A support rod is fixedly connected to the inner side of the bottom bracket outer frame, a socket is provided in the upper end of the support rod, a plurality of flaps are provided on both sides of the support rod, gear rods are fixedly connected to both ends of the flaps, the gear rods are movably connected to the bottom bracket outer frame, a connecting mechanism is provided in one side of the flap, a connecting groove is provided in the side of the flap away from the connecting mechanism, a plurality of the flaps are connected to each other by being clamped in the connecting groove through the connecting mechanism, plugging grooves are provided on the inner side of the bottom bracket outer frame and one side of the support rod, and the connecting mechanism close to the bottom bracket outer frame and the support rod is plugged into the plugging groove; One end of the connecting mechanism is in contact with the pushing mechanism, and the pushing mechanism is arranged in the flap. One end of the pushing mechanism passes through the gear rod and extends into the connecting cavity. The outer frame of the bottom bracket is provided with connecting cavities on both sides. The connecting cavity is movably connected with an extrusion transmission mechanism, and the lower end of the connecting cavity is movably connected with a toothed plate. The upper end of the toothed plate is meshed with a plurality of gear rods. One end of the toothed plate is arranged in an inclined shape. After the extrusion transmission mechanism moves downward, the toothed plate is first squeezed. After being squeezed, the toothed plate moves and causes the plurality of flaps to flip and close. The extrusion transmission mechanism then squeezes the pushing mechanism, so that the connecting mechanism is inserted into the connecting groove. Two clamping mechanisms are arranged at the upper end of the bottom support outer frame, one end of the tooth plate is fixedly connected with a push spring, and the other end of the push spring is fixedly connected with the connecting cavity.

2. A fixing lock structure for a battery replacement base for commercial vehicles according to claim 1, characterized in that: The connecting mechanism includes a T-shaped connecting plate, which is slidably connected to a T-shaped slot, which is opened in a flap, and a connecting plate is fixedly connected to the T-shaped connecting plate near the flap, and the connecting plate extends into a give-way cavity at one end away from the flap and contacts with a pushing mechanism, and the connecting plate is inclined at one end near the pushing mechanism, and the give-way cavity is opened in the flap, and two return springs are fixedly connected to one side of the T-shaped connecting plate, and the other end of the return spring is fixedly connected to the T-shaped slot.

3. A fixed lock structure for a battery replacement base for commercial vehicles according to claim 2, characterized in that: The pushing mechanism comprises an L-shaped push rod, which is slidably connected in the yielding cavity, and one end of the L-shaped push rod away from the connecting plate passes through the gear rod and extends into the external environment, and both ends of the L-shaped push rod are arranged in an inclined shape.

4. A fixing lock structure for a battery replacement base for commercial vehicles according to claim 3, characterized in that: One side of the L-shaped push rod is fixedly connected to a limiting block, the limiting block is slidably connected in a limiting groove, the limiting groove is arranged in the flap, a limiting spring is fixedly connected in the limiting groove, one end of the limiting spring is fixedly connected to the limiting block, and the other end is fixedly connected to the limiting groove.

5. The fixing lock structure for the battery replacement base of a commercial vehicle according to claim 1 is characterized in that: The extrusion transmission mechanism includes a lifting plate, which is slidably connected in a connecting cavity, and the lower end of the lifting plate is fixedly connected to a first extrusion rod and a plurality of second extrusion rods, respectively. The lower end of the first extrusion rod and one side of the second extrusion rod are both arranged in an inclined shape, and one side of the lifting plate is fixedly connected to two supporting plates, and one end of the supporting plate away from the lifting plate passes through a guide groove and extends into the inner side of the bottom bracket outer frame, and the guide groove is opened on the inner side of the bottom bracket outer frame, and the lower end of the lifting plate is fixedly connected to two supporting springs, and the other end of the supporting spring is fixedly connected to the connecting cavity.

6. A fixing lock structure for a battery replacement base for commercial vehicles according to claim 1, characterized in that: The clamping mechanism includes a connecting block, and T-shaped pressure plates are movably connected in the opposite surfaces of the two connecting blocks. The lower end of the connecting block is fixedly connected to two guide rods, and the lower end of the guide rod is movably connected to a storage groove, and the storage groove is opened in the upper end of the bottom support outer frame.

7. A fixing lock structure for a battery replacement base for commercial vehicles according to claim 6, characterized in that: The T-shaped pressure plate is slidably connected in the T-shaped limiting cavity, a first telescopic cylinder is fixedly connected in the T-shaped limiting cavity, an output end of the first telescopic cylinder is fixedly connected to the T-shaped pressure plate, a second telescopic cylinder is fixedly connected in the storage groove, and an output end of the second telescopic cylinder is fixedly connected to the connecting block.

8. A fixing lock structure for a battery replacement base for commercial vehicles according to claim 7, characterized in that: Locking grooves are provided at both ends of the connecting block, a T-shaped locking block is clamped in the locking groove, the T-shaped locking block is slidably connected in the sliding cavity, the sliding cavity is provided in the receiving groove, a connecting spring is fixedly connected in the sliding cavity, the other end of the connecting spring is fixedly connected to the T-shaped locking block, and an electromagnet is fixedly connected in the sliding cavity.

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