Multi-stage guiding and locking mechanism for battery box of heavy truck

Abstract

This invention discloses a multi-stage guide locking mechanism for heavy-duty truck battery swapping boxes, within the field of battery box locking technology. It includes a locking base and a connector, and further comprises: a guide mechanism, wherein multiple guide mechanisms are provided, each guide mechanism including a wedge body and a lifting component; the guide mechanism also includes a transmission component, and a precision guide component is disposed on the outer side of the wedge body. The precision guide component is drively connected to the transmission component, and the precision guide component is positioned near or away from the center of the wedge body via the transmission component. This invention, through the mutual cooperation of the wedge body, lifting component, precision guide component, transmission component, and fixing component, achieves early intervention guidance, graded buffering and shock absorption, and integrated coarse and fine guidance to eliminate the problems of hard impact and jamming of separate parts. It solves the shortcomings of existing fixed wedge guide mechanisms, such as late intervention, susceptibility to impacts in strong winds, single buffering method, and large wear of dispersed guide components.

Description

Technical Field

[0001] This invention relates to the field of battery box locking technology, and in particular to a multi-stage guide locking mechanism for a heavy-duty truck battery swapping box. Background Technology

[0002] A battery box is a battery pack composed of several individual batteries, a casing, a battery management system, and related installation components (equipment). It features a standard battery box structure, battery box monitoring equipment, battery box connectors, and battery box environmental control equipment. Battery swapping, as an innovative energy replenishment method, has demonstrated significant potential and advantages in ensuring the range of electric work vehicles. Electric work vehicles, such as electric heavy trucks, electric buses, electric forklifts, and electric construction machinery, require continuous operation and have extremely high range requirements. Traditional charging methods often cannot meet their fast and efficient needs. Therefore, battery swapping solutions have emerged, providing electric work vehicles with a more convenient and reliable energy replenishment method.

[0003] However, existing technologies still have the following problems: First, when swapping batteries in heavy-duty trucks, the battery box needs to be lifted first, then a new battery box needs to be replaced, and then lowered and locked for replacement. However, during the descent, the battery box is easily disturbed by strong winds or external collisions, which can cause local hard impacts on the wedges or cones, resulting in squeezing, bumping, and impact noise. Second, the wedges are fixed in position, and the battery box only contacts the guide structure after falling a certain distance. When there is wind deviation, the battery box has already developed a large positional deviation before correction begins, which can easily lead to jamming and excessive local stress. Therefore, we propose a multi-stage guide locking mechanism for battery boxes in heavy-duty trucks. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a multi-stage guide locking mechanism for heavy-duty truck battery swapping boxes.

[0005] The objective of this invention is achieved as follows: A multi-stage guide locking mechanism for a heavy-duty truck battery swapping box, comprising a locking base and a connector, wherein the connector is disposed in the middle of the upper surface of the locking base, and further comprising:

[0006] The guide mechanism comprises multiple sets, each set positioned at one of the four corners of the upper surface of the locking base. Each guide mechanism includes a wedge block body and a lifting component. The lifting component is located at the bottom of the wedge block body, thereby allowing the wedge block body to be vertically connected to the locking base via the lifting component.

[0007] The guiding mechanism also includes a transmission component, which is connected to the lifting component. A precision guide component is provided on the outer side of the wedge body, which is connected to the transmission component. The precision guide component is positioned close to or away from the center of the wedge body through the transmission component.

[0008] The locking assembly is provided in multiple sets, and the wedge block body is fixedly installed to the battery box through the locking assembly.

[0009] Optionally, both sides of the wedge block body are inclined, and vertical edges are provided at the bottom of both sides of the wedge block. An inclined edge is provided between the outer side of the wedge block and the vertical edge, and the precision guide component is provided on the vertical edge.

[0010] Optionally, grooves are provided on both sides of the wedge block body, and a sliding surface is provided inside the groove. The sliding surface is composed of multiple sets of rollers, and the multiple sets of rollers are rotatably installed inside the groove, and a gap plate is provided between two adjacent sets of rollers.

[0011] Optionally, the precision guide component includes two sets of rubber wheels and two sets of baffles. The two sets of vertical sides are respectively provided with lifting grooves and storage grooves at both ends. The rubber wheels are slidably installed inside the storage grooves, and the baffles are elastically raised and lowered inside the lifting grooves.

[0012] Optionally, the precision guide component further includes two sets of first bevel gears. A transmission screw is fixedly installed on the middle of one side of each of the two sets of first bevel gears. A threaded connecting rod is threadedly connected to the outer side of the transmission screw. A transmission groove is opened at the bottom of the wedge block body. The threaded connecting rod is slidably installed inside the transmission groove. One end of each of the two sets of threaded connecting rods is rotatably connected to two sets of rubber wheels. Both sets of first bevel gears are connected to the transmission component.

[0013] Optionally, a telescopic rod is rotatably mounted on the outer side of one set of threaded connecting rods. A rotating shaft is fixedly mounted on one end of the telescopic rod, and the rotating shaft is rotatably mounted inside the transmission groove. Another set of telescopic rods is fixedly mounted on the outer side of the rotating shaft. A push rod is rotatably connected to one end of the movable rod of the other set of telescopic rods. The push rod is slidably mounted inside the transmission groove. An insertion groove is opened on one side of both sets of baffle cylinders. One end of the push rod is engaged in one set of insertion grooves, and a linkage rod is engaged in the other set of insertion grooves. The linkage rod is throttlely connected to the push rod.

[0014] Optionally, both the linkage rod and the push rod have toothed grooves on one side, and a transmission gear is connected to the push groove side through the toothed groove. Another set of transmission gears is connected to the transmission gear side through the toothed groove. The other set of transmission gears is connected to the linkage rod through the toothed groove.

[0015] Optionally, the lifting component includes multiple sets of second spring push rods, and mounting seats are provided at the four corners of the upper surface of the locking base. The multiple sets of second spring push rods are respectively provided at the four corners of the upper surface of the mounting seats. A first spring push rod is provided at one end of the movable rod of the second spring push rod, and a linkage frame is fixedly installed at one end of the movable rod of the first spring push rod. The linkage frame is located at the bottom of the wedge block.

[0016] Optionally, the lifting component further includes a guide column, a lifting sleeve is slidably sleeved on the outer side of the guide column, the upper end of the lifting sleeve is fixedly connected to the bottom of the wedge block, a retaining component is provided at the lower end of the outer side of the guide column, and the movable rod of the second spring push rod is fixedly set to the mounting base through the retaining component.

[0017] Optionally, the retaining component includes a lower pressure plate and an extended housing. The extended housing is disposed at the lower end of the outer side of the guide post. A linkage groove is formed around the upper surface of the extended housing. The lower pressure plate is slidably sleeved on the outer side of the guide post. The lower pressure plate is elastically connected to the extended housing. The outer side of the lower pressure plate is inclined. A positioning shell is provided between the extended housing and the second spring push rod. A pin is elastically connected inside the positioning shell. A pin hole is formed at the bottom of the outer side of the second spring push rod. The pin is slidably inserted into the pin hole. One end of the pin passes through the extended housing into the linkage groove.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] Through the cooperation of the lifting components, wedge bodies, transmission components and precision guide components, the four sets of wedge bodies can move upward elastically during the process of the battery box rising, thereby reducing the distance between the battery box descending and the wedge bodies for the first coarse guidance, thus intervening in guidance earlier and reducing the risk of collision and squeezing.

[0020] Secondly, the lifting component uses a structure of two stacked spring rods to achieve graded spring guidance. While guiding, it also has the effect of spring shock absorption, avoiding excessive impact force when the battery box is lowered, which could damage the battery box. The two stacked spring rods have a first spring rod at the top that can provide initial guidance in a general direction, while the second spring rod at the bottom has stronger elasticity than the first spring rod, thus providing a certain degree of rigidity for precise positioning and guidance. At the same time, it works with a baffle to reduce the impact force when falling.

[0021] Through the design of precision guide components, when the wedge block body descends to the designated position, the baffle releases the position lock and moves downward by the pressure of the battery box. After reaching the limit position, it continues to drive the wedge block body downward. When the position of the baffle changes on the outside of the wedge block body, the rubber wheel moves outward and precisely fits against the bottom of the battery box, thereby squeezing the battery box and achieving more precise position guidance. Rubber wheels are provided on both sides of each wedge block body, so more precise guidance can be achieved. Therefore, by combining the above structure, the originally scattered coarse guidance, fine guidance, buffering, and pre-locking are concentrated in the four corner wedge block assembly, reducing parts and simplifying the base processing, thereby effectively improving the practicality of the multi-stage guide locking mechanism. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of a multi-stage guide locking mechanism for a heavy-duty truck battery swapping box in the invention.

[0024] Figure 2 This is a schematic diagram of the wedge block body structure of a multi-stage guide locking mechanism for a heavy-duty truck battery swapping box in the invention.

[0025] Figure 3 This is a schematic diagram of the bidirectional motor structure of a multi-stage guide locking mechanism for a heavy-duty truck battery swapping box in the invention.

[0026] Figure 4 This is a schematic diagram of the inclined side structure of a multi-stage guide locking mechanism for a heavy-duty truck battery swapping box in the invention.

[0027] Figure 5 This is a schematic diagram of the rubber wheel structure of a multi-stage guide locking mechanism for a heavy-duty truck battery swapping box in an invention.

[0028] Figure 6 This is a schematic diagram of the baffle structure of a multi-stage guide locking mechanism for a heavy-duty truck battery swapping box in the invention.

[0029] Figure 7 This invention relates to a multi-stage guide locking mechanism for a heavy-duty truck battery swapping box. Figure 6 A magnified structural diagram at point A.

[0030] Figure 8This is a schematic diagram of the linkage frame structure of a multi-stage guide locking mechanism for a heavy-duty truck battery swapping box in the invention.

[0031] Figure 9 This is a schematic diagram of the guide column structure of a multi-stage guide locking mechanism for a heavy-duty truck battery swapping box in the invention.

[0032] Figure 10 This is a schematic diagram of the lifting sleeve structure of a multi-stage guide locking mechanism for a heavy-duty truck battery swapping box in the invention.

[0033] Figure 11 This is a schematic diagram of the lifting spring structure of a multi-stage guide locking mechanism for a heavy-duty truck battery swapping box in an invention.

[0034] The diagram shows the following components: 1. Guide mechanism; 2. Linkage frame; 3. Locking base; 4. Connector; 5. Inclined edge; 6. Linkage rod; 7. Lifting spring; 8. Locking assembly; 101. Wedge block body; 102. Lifting component; 1021. First spring rod; 1022. Second spring rod; 1023. Guide column; 1024. Lifting sleeve; 103. Mounting seat; 104. Precision guide component; 1041. Rubber wheel; 1042. Baffle; 1043. Threaded connecting rod; 1044. First bevel gear; 1045. Transmission screw; 1046. Telescopic rod; 1047. Rotating shaft; 1048. Pushing element. 1049. Rod; 105. Transmission gear; 1051. Transmission component; 1052. Second bevel gear; 1053. Square rod; 1054. Transmission gear plate; 1055. Third bevel gear; 1055. Drive gear; 106. Retaining component; 1061. Lower pressure plate; 1062. Pin; 1063. Positioning shell; 1064. Return spring; 1065. Extension shell; 107. Sliding surface; 1071. Roller; 1072. Slit plate; 801. Positioning shell; 802. Fixed shell; 803. Bidirectional motor; 804. Transmission rod; 805. Locking bevel gear; 806. Locking screw; 807. Locking block. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] like Figures 1 to 11 As shown, a multi-stage guide locking mechanism for a heavy-duty truck battery swapping box includes a locking base 3 and a connector 4. The connector 4 is disposed in the middle of the upper surface of the locking base 3. It also includes:

[0037] The guide mechanism 1 is provided in multiple sets, and the multiple sets of guide mechanisms 1 are respectively located at the four corners of the upper surface of the locking base 3. The guide mechanism 1 includes a wedge block body 101 and a lifting component 102. The lifting component 102 is located at the bottom of the wedge block body 101, so that the wedge block body 101 is connected to the locking base 3 in a lifting manner through the lifting component 102.

[0038] The guide mechanism 1 also includes a transmission component 105, which is connected to the lifting component 102. A precision guide component 104 is provided on the outside of the wedge block body 101. The precision guide component 104 is connected to the transmission component 105, and the precision guide component 104 is positioned close to or away from the center of the wedge block body 101 through the transmission component 105.

[0039] The locking assembly 8 is provided in multiple sets, and the wedge block body 101 is fixedly installed with the battery box through the locking assembly 8.

[0040] Specifically, such as Figures 1 to 11 As shown, the locking assembly 8 mentioned above includes a positioning shell 801, which is fixedly installed between two adjacent sets of wedge block bodies 101. Both sets of wedge block bodies 101 have locking holes on both sides, and the two sets of locking holes are interconnected. A bidirectional motor 803 is installed inside the positioning shell 801. A transmission rod 804 is fixedly installed at one end of the output shaft at both ends of the bidirectional motor 803, and a locking bevel gear 805 is fixedly installed at one end of the transmission rod 804. Another set of locking bevel gears 805 is meshed with one side of the locking bevel gear 805. A locking screw 806 is fixedly installed on one side of both sets of locking bevel gears 805. The locking screw 806 is rotatably installed inside the locking hole, and a locking block 807 is threadedly connected to the outside of both sets of locking screws 806. The locking block 807 is slidably installed inside the locking hole.

[0041] like Figures 1 to 11 As shown, through the design of the locking component 8 described above, when the battery box descends onto the upper surface of the locking base 3 and simultaneously wraps around the wedge block body 101, the operator can activate the locking component 8 to further lock the battery box and achieve locking.

[0042] Through the design of the lifting component 102, the wedge block body 101 can move up and down on the upper surface of the locking base 3 via the lifting component 102. When the battery box moves upward to replace the battery, the wedge block body 101 can move upward under the elastic action of the lifting component 102, reducing the distance of the guiding area when the battery box descends. Therefore, the guidance is intervened earlier when the battery box shakes, reducing the risk of collision and squeezing.

[0043] Furthermore, both sides of the wedge body 101 are inclined, and vertical edges are provided at the bottom of both sides of the wedge. An inclined edge 5 is provided between the outer side of the wedge and the vertical edge, and the precision guide component 104 is provided on the vertical edge.

[0044] like Figures 1 to 11 As shown, the tilt angle of the tilted edge 5 is greater than that of the two sides of the wedge body 101, which can prevent the battery box from suddenly contacting the vertical edge when it falls, thus avoiding a collision during the guidance process. Therefore, by setting the tilted edge 5 and the two sides of the wedge body 101 to be tilted, the double-segment tilting cooperation can be achieved, which can better improve the guidance safety.

[0045] Furthermore, grooves are provided on both sides of the wedge block body 101, and sliding surfaces 107 are provided inside the grooves. The sliding surfaces 107 are composed of multiple sets of rollers 1071, and the multiple sets of rollers 1071 are rotatably installed inside the grooves. A gap plate 1072 is provided between two adjacent sets of rollers 1071.

[0046] like Figures 1 to 11 As shown, through the design of the roller 1071 and the gap plate 1072, the roller 1071 can change the contact between the battery box and the inclined surface of the wedge block body 101 from sliding friction to rolling friction, thereby greatly reducing the friction. In addition, the gap plate 1072 is set between two adjacent sets of rollers 1071 to fill the gap height difference generated between the two adjacent sets of rollers 1071, so as to avoid the battery box from experiencing large jerks during the contact process, which would make it difficult to guide.

[0047] Furthermore, the precision guide component 104 includes two sets of rubber wheels 1041 and two sets of baffles 1042. The two sets of vertical sides are respectively provided with lifting grooves and storage grooves at both ends. The rubber wheels 1041 are slidably installed inside the storage grooves, and the baffles 1042 are elastically raised and lowered inside the lifting grooves.

[0048] Specifically, such as Figures 1 to 11 As shown, a lifting spring 7 is installed inside the lifting groove, and the upper end of the lifting spring 7 is fixedly connected to the bottom of the baffle 1042, so that the baffle 1042 can slide up and down inside the lifting groove. Secondly, through the design of the baffle 1042, when the battery box descends, the wedge block body 101 can be driven to move downward by squeezing the baffle 1042, and cooperate with the lifting component 102 to perform step-by-step buffering pressure work.

[0049] Furthermore, the precision guide component 104 also includes two sets of first bevel gears 1044. A transmission screw 1045 is fixedly installed on the middle of one side of each of the two sets of first bevel gears 1044. A threaded connecting rod 1043 is threadedly connected to the outer side of the transmission screw 1045. A transmission groove is opened at the bottom of the wedge block body 101. The threaded connecting rod 1043 is slidably installed inside the transmission groove. One end of each of the two sets of threaded connecting rods 1043 is rotatably connected to two sets of rubber wheels 1041. Both sets of first bevel gears 1044 are connected to the transmission component 105.

[0050] like Figures 1 to 11 As shown, through the cooperation of the threaded connecting rod 1043 and the rubber wheel 1041, the rubber wheel 1041 can slide horizontally inside the storage groove through the cooperation of the threaded connecting rod 1043 and the transmission screw 1045. Thus, when the battery box compression baffle 1042 descends to the bottom inside the lifting groove, the rubber wheel 1041 slides outward, thereby pressing and squeezing the bottom of the battery box to achieve a tighter guide.

[0051] Furthermore, a telescopic rod 1046 is rotatably mounted on the outer side of one set of threaded connecting rods 1043. A rotating shaft 1047 is fixedly mounted on one end of the telescopic rod 1046. The rotating shaft 1047 is rotatably mounted inside the transmission groove. Another set of telescopic rods 1046 is fixedly mounted on the outer side of the rotating shaft 1047. A push rod 1048 is rotatably connected to one end of the movable rod of the other set of telescopic rods 1046. The push rod 1048 is slidably mounted inside the transmission groove. Insertion slots are opened on one side of both sets of baffles 1042 cylinders. One end of the push rod 1048 is engaged inside one set of insertion slots. A linkage rod 6 is engaged inside the other set of insertion slots. The linkage rod 6 is connected to the push rod 1048 in a transmission connection.

[0052] like Figures 1 to 11 As shown, through the design of the telescopic rod 1046 and the rotating shaft 1047, when the battery box descends to a certain position, the threaded connecting rod 1043 slides horizontally and drives the telescopic rod 1046 to rotate around the rotating shaft 1047. The two sets of telescopic rods 1046 can rotate in the same direction. The other set of telescopic rods 1046 can drive the push rod 1048 to move and control one end of the push rod 1048 to disengage from the insertion slot, thereby removing the limit of the baffle 1042 and facilitating downward sliding inside the lifting slot.

[0053] Furthermore, both the linkage rod 6 and the push rod 1048 have toothed grooves on one side, and the push groove is connected to the transmission gear 1049 through the toothed groove. The transmission gear 1049 is connected to another set of transmission gears 1049 through the toothed groove. The other set of transmission gears 1049 is connected to the linkage rod 6 through the toothed groove.

[0054] like Figures 1 to 11As shown, through the design of the mutual cooperation between the transmission gear 1049 and the linkage rod 6, when the push rod 1048 disengages from the pin slot, the linkage rod 6 is moved by the mutual meshing of the two sets of transmission gears 1049, so that the linkage rod 6 can move away from the other set of pin slots, thereby allowing the other set of baffles 1042 to be released from position limitation.

[0055] Furthermore, the lifting component 102 includes multiple sets of second spring push rods 1022, and mounting seats 103 are provided at the four corners of the upper surface of the locking base 3. Multiple sets of second spring push rods 1022 are respectively provided at the four corners of the upper surface of the mounting seats 103. A first spring push rod 1021 is provided at one end of the movable rod of the second spring push rod 1022, and a linkage frame 2 is fixedly installed at one end of the movable rod of the first spring push rod 1021. The linkage frame 2 is located at the bottom of the wedge block.

[0056] For example, such as Figures 1 to 11 As shown, it should be noted that the elastic energy of the first spring push rod 1021 and the second spring push rod 1022 are different. The elastic force of the first spring push rod 1021 is weaker than that of the second spring push rod 1022. Therefore, when the battery box descends and presses the baffle 1042 to control the wedge block body 101 to descend, the first spring push rod 1021 can be pressed first, while the second spring push rod 1022 has greater elasticity and will not be lowered. Therefore, the first spring push rod 1021 can first cooperate with the wedge block body 101 to... The first step of coarse guidance achieves large misalignment guidance. Subsequently, when the first spring push rod 1021 is fully compressed, the second spring push rod 1022 will be triggered. Since the second spring push rod 1022 has greater elasticity, it can achieve high rigidity to ensure positioning accuracy based on the elasticity of the first spring push rod 1021. Thus, the first spring push rod 1021 and the second spring push rod 1022 can work together to achieve the effect of balancing buffer performance and locking positioning rigidity. Therefore, the practicality of the multi-stage guide locking mechanism can be further improved.

[0057] Furthermore, the lifting component 102 also includes a guide post 1023, a lifting sleeve 1024 is slidably sleeved on the outside of the guide post 1023, the upper end of the lifting sleeve 1024 is fixedly connected to the bottom of the wedge block, a retaining component 106 is provided at the lower end of the outside of the guide post 1023, and the movable rod of the second spring push rod 1022 is fixedly set to the mounting base 103 through the retaining component 106.

[0058] Specifically, such as Figures 1 to 11As shown, the aforementioned transmission component 105 includes a second bevel gear 1051 and a transmission gear plate 1053. A clearance groove is provided on the upper surface of the guide post 1023, and a drive gear 1055 is rotatably mounted inside the clearance groove. The lifting sleeve 1024 is fixedly connected to the transmission gear plate 1053, and the transmission gear plate 1053 is slidably mounted inside the clearance groove. A clearance hole communicating with the clearance groove is provided on the outer side of the guide post 1023, and the transmission gear plate 1053 is located inside the clearance hole. The drive gear 1055 is meshed and connected. A third bevel gear 1054 is fixedly installed on one side of the drive gear 1055. Another set of third bevel gears 1054 is meshed and connected on one side of the third bevel gear 1054. The second bevel gear 1051 is rotatably installed inside the rotating groove. Both sets of first bevel gears 1044 are meshed and connected with the second bevel gear 1051. A square rod 1052 is fixedly installed at the bottom of the second bevel gear 1051. The other set of third bevel gears 1054 is slidably sleeved on the outside of the square rod 1052.

[0059] It should be noted that the aforementioned drive gear 1055 is positioned when the spring inside the first spring push rod 1021 is fully compressed. Thus, when the wedge block body 101 descends to the point where the second spring push rod 1022 is triggered, the lifting sleeve 1024 drives the transmission gear plate 1053 to mesh with the drive gear 1055, causing the drive gear 1055 to rotate. This rotation is controlled by two sets of third bevel gears 1054, which in turn control the square rod 1052 to rotate. The square rod 1052 then controls the second bevel gear 1051 to rotate, which in turn controls the two sets of first bevel gears 1044 to rotate. As a result, when the first bevel gears 1044 rotate, the push rod 1048 and the linkage rod 6 slide out of the pin slot, causing the baffle 1042 to be squeezed and lowered by the battery box. Simultaneously, the transmission screw 1045 controls the threaded connecting rod 1043 to extend the two sets of rubber wheels 1041 out of the storage slot, squeezing the inner wall of the battery box for more precise guidance.

[0060] In summary, through the design of the transmission component 105, after the battery box descends to the designated position, the rubber wheel 1041 extends and fits against the battery box to complete further guidance through mechanical transmission. Thus, all actions are driven by the battery's own weight, and the structural transmission achieves multi-stage automatic guidance.

[0061] In addition, the use of rubber wheels 1041 for precision guidance reduces metal-to-metal wear compared to the traditional method of using metal limiters, thus extending the service life of the mechanism.

[0062] Furthermore, the retaining component 106 includes a lower pressure plate 1061 and an extended housing 1065. The extended housing 1065 is disposed at the lower end of the outer side of the guide post 1023. A linkage groove is formed around the upper surface of the extended housing 1065. The lower pressure plate 1061 is slidably sleeved on the outer side of the guide post 1023. The lower pressure plate 1061 and the extended housing 1065 are elastically connected. The outer side of the lower pressure plate 1061 is inclined. A positioning shell 1063 is provided between the extended housing 1065 and the second spring push rod 1022. A pin 1062 is elastically connected inside the positioning shell 1063. A pin hole is formed at the bottom of the outer side of the second spring push rod 1022. The pin 1062 is slidably inserted into the pin hole. One end of the pin 1062 passes through the extended housing 1065 to the inside of the linkage groove.

[0063] like Figures 1 to 11 As shown, through the design of the retaining component 106, after the spring inside the second spring push rod 1022 is fully compressed, the lifting sleeve 1024 presses the lower pressure plate 1061. The lower pressure plate 1061 uses the angle of its bottom to press one end of the pin 1062 located inside the linkage groove, so that the other end of the pin 1062 is close to the inside of the second spring push rod 1022, and performs a pin limit operation on the movable rod of the second spring push rod 1022, thereby helping to reduce the pressure of the locking component 8 on the battery box locking position.

[0064] Specifically, such as Figures 1 to 11 As shown, the positioning shell 1063 has an external expansion groove inside, and a return spring 1064 is fixedly installed on the outside of the pin 1062. One end of the return spring 1064 is fixedly installed inside the external expansion groove. So when the battery box is raised for replacement, the pin 1062 can be moved away from the movable rod of the second spring push rod 1022 by the elastic action of the return spring 1064, so that the movable rod of the second spring push rod 1022 is released and pushed upward. This allows the wedge block body 101 to move upward with the battery box, so that the guidance can be intervened earlier and the shaking caused by the battery box falling when the battery box is in windy conditions at the battery swapping station can be avoided, which could lead to collision damage.

[0065] It should be noted that through the cooperation of the lifting spring 7 and the return spring 1064, as well as the cooperation of the drive gear 1055 and the transmission gear plate 1053, the baffle 1042 and other structures can be automatically reset when the battery box is raised to replace the battery, which facilitates the subsequent multi-stage guiding operation of the battery box descending.

[0066] In summary, this invention, through the combination of a wedge block body 101 with a flexible lifting and lowering mechanism, a double-section variable tilt angle inclined surface, and a built-in roller 1071 for wear reduction, and an integrated structure consisting of a two-stage gradient stiffness spring top rod, a self-weight purely mechanical linkage telescopic rubber wheel 1041, and a low-position pin 1062 for locking, achieves early intervention guidance, graded buffering and shock absorption, and integrated coarse and fine guidance to eliminate the problems of hard impact and jamming of separate parts. This solves the defects of existing fixed wedge block guidance, such as late intervention, easy collision in strong winds, single buffering, and large dispersed wear of guide components.

[0067] The above description of the embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A multi-stage guide locking mechanism for a heavy-duty truck battery swapping box, comprising a locking base (3) and a connector (4), wherein the connector (4) is disposed in the middle of the upper surface of the locking base (3), characterized in that: Also includes: The guide mechanism (1) is provided in multiple sets, and the multiple sets of guide mechanisms (1) are respectively provided at the four corners of the upper surface of the locking base (3). The guide mechanism (1) includes a wedge body (101) and a lifting component (102). The lifting component (102) is provided at the bottom of the wedge body (101), so that the wedge body (101) is connected to the locking base (3) in a lifting manner through the lifting component (102): The guide mechanism (1) further includes a transmission component (105), which is connected to the lifting component (102). A precision guide component (104) is provided on the outside of the wedge body (101), which is connected to the transmission component (105). The precision guide component (104) is located near or away from the center of the wedge body (101) through the transmission component (105). The locking assembly (8) is provided in multiple sets, and the wedge body (101) is fixedly installed with the battery box through the locking assembly (8).

2. The multi-stage guide locking mechanism for a heavy-duty truck battery swapping box according to claim 1, characterized in that: The wedge body (101) is inclined on both sides, and vertical edges are provided at the bottom of both sides of the wedge. An inclined edge (5) is provided between the outer side of the wedge and the vertical edge. The precision guide component (104) is provided on the vertical edge.

3. The multi-stage guide locking mechanism for a heavy-duty truck battery swapping box according to claim 2, characterized in that: The wedge block body (101) has grooves on both sides, and a sliding surface (107) is provided inside the groove. The sliding surface (107) is composed of multiple sets of rollers (1071). The multiple sets of rollers (1071) are rotatably installed inside the groove, and a gap plate (1072) is provided between two adjacent sets of rollers (1071).

4. The multi-stage guide locking mechanism for a heavy-duty truck battery swapping box according to claim 3, characterized in that: The precision guide component (104) includes two sets of rubber wheels (1041) and two sets of baffles (1042). The two sets of vertical sides are respectively provided with lifting grooves and storage grooves at both ends. The rubber wheels (1041) are slidably installed inside the storage grooves, and the baffles (1042) are elastically raised and lowered inside the lifting grooves.

5. A multi-stage guide locking mechanism for a heavy-duty truck battery swapping box according to claim 4, characterized in that: The precision guide component (104) also includes two sets of first bevel gears (1044). A transmission screw (1045) is fixedly installed on the middle of one side of each of the two sets of first bevel gears (1044). A threaded connecting rod (1043) is threadedly connected to the outside of the transmission screw (1045). A transmission groove is opened at the bottom of the wedge block body (101). The threaded connecting rod (1043) is slidably installed inside the transmission groove. One end of each of the two sets of threaded connecting rods (1043) is rotatably connected to two sets of rubber wheels (1041). Both sets of first bevel gears (1044) are connected to the transmission component (105) for transmission.

6. The multi-stage guide locking mechanism for a heavy-duty truck battery swapping box according to claim 5, characterized in that: One set of threaded connecting rods (1043) has a telescopic rod (1046) rotatably mounted on its outer side. One end of the telescopic rod (1046) is fixedly mounted with a rotating shaft (1047). The rotating shaft (1047) is rotatably mounted inside the transmission groove. Another set of telescopic rods (1046) is fixedly mounted on the outer side of the rotating shaft (1047). One end of the movable rod of the other set of telescopic rods (1046) is rotatably connected to a push rod (1048). The push rod (1048) is slidably mounted inside the transmission groove. Both sets of baffles (1042) have insertion slots on one side. One end of the push rod (1048) is engaged in one set of insertion slots. The other set of insertion slots is engaged with a linkage rod (6). The linkage rod (6) is connected to the push rod (1048) in a transmission connection.

7. A multi-stage guide locking mechanism for a heavy-duty truck battery swapping box according to claim 6, characterized in that: Both the linkage rod (6) and the push rod (1048) have toothed grooves on one side, and the push groove is connected to a transmission gear (1049) through the toothed groove. The transmission gear (1049) is connected to another set of transmission gears (1049) through the toothed groove. The other set of transmission gears (1049) is connected to the linkage rod (6) through the toothed groove.

8. A multi-stage guide locking mechanism for a heavy-duty truck battery swapping box according to claim 7, characterized in that: The lifting component (102) includes multiple sets of second spring rods (1022). Mounting seats (103) are provided at the four corners of the upper surface of the locking base (3). Multiple sets of second spring rods (1022) are respectively provided at the four corners of the upper surface of the mounting seats (103). A first spring rod (1021) is provided at one end of the movable rod of the second spring rod (1022). A linkage frame (2) is fixedly installed at one end of the movable rod of the first spring rod (1021). The linkage frame (2) is located at the bottom of the wedge block.

9. A multi-stage guide locking mechanism for a heavy-duty truck battery swapping box according to claim 8, characterized in that: The lifting component (102) also includes a guide post (1023), a lifting sleeve (1024) is slidably sleeved on the outside of the guide post (1023), the upper end of the lifting sleeve (1024) is fixedly connected to the bottom of the wedge block, and a fixing component (106) is provided on the lower outside of the guide post (1023). The movable rod of the second spring top rod (1022) is fixedly set to the mounting base (103) through the fixing component (106).

10. A multi-stage guide locking mechanism for a heavy-duty truck battery swapping box according to claim 9, characterized in that: The retaining component (106) includes a lower pressure plate (1061) and an extension shell (1065). The extension shell (1065) is located at the lower end of the outer side of the guide post (1023). A linkage groove is formed around the upper surface of the extension shell (1065). The lower pressure plate (1061) is slidably sleeved on the outer side of the guide post (1023). The lower pressure plate (1061) is elastically connected to the extension shell (1065). The outer side of the lower pressure plate (1061) is inclined. A positioning shell (1063) is provided between the extension shell (1065) and the second spring push rod (1022). A pin (1062) is elastically connected inside the positioning shell (1063). A pin hole is formed at the bottom of the outer side of the second spring push rod (1022). The pin (1062) is slidably inserted into the pin hole. One end of the pin (1062) passes through the extension shell (1065) to the inside of the linkage groove.

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