A detachable electric heavy truck battery compartment locking device

Abstract

The present invention discloses a detachable electric heavy-duty truck battery compartment locking device, comprising a power part and a locking part. The power part is installed in a lower outer shell, and the locking part is installed in an upper outer shell. The power part and the locking part can be separated, and the power part and the locking part are connected by a buckle of the power part. The power part of the present invention is detachable, and a single power part can lock all the locking parts on the vehicle, and the power part can also be fixed by a secondary anti-loosening buckle group. At the same time, the guide groove lead and direction of the lock tongue pressure plate are consistent with the screw rod, which shortens the vertical movement of the lock tongue pressure plate during rotation and increases the effective working length of the lock tongue pressure plate.

Description

Technical Field

[0001] The present invention belongs to the technical field of battery replacement for heavy trucks, and in particular relates to a battery compartment locking device for a battery replacement for an electric heavy truck. Background Art

[0002] At present, due to the limitation of battery capacity, electric vehicles cannot maintain long-term high mileage, especially electric heavy trucks, which are heavy, energy-intensive and take a long time to charge. To extend the mileage and shorten the idle time, the main measure is to set up battery swap stations. When the vehicle is about to run out of power, the battery can be replaced. It only takes a few minutes to extend the mileage by hundreds of kilometers. Based on this, the efficiency of the battery swap station needs to be guaranteed.

[0003] However, the battery compartments of most existing cars are connected to the bottom of the vehicle by bolts. In the process of replacing the battery compartment, all the bolts need to be removed before replacement. It is difficult to automate this work, and the replacement method is complicated. Most traditional pneumatic locking mechanisms are integrated, large in size, high in cost, and it is difficult to eliminate the gap between the locking objects, which causes the battery compartment to shake easily when the car moves. At the same time, the vehicle uses 4-10 locking devices to lock the battery, and the overall cost is high. There are also separate locking mechanisms, such as patent CN115848119A, which require special unlocking tools when locking or unlocking, such as the flat-blade screwdriver tool mentioned in the patent application, but the number of its special unlocking tools is still the same as the number of locking mechanisms on the car, and it cannot be integrated into one. The integrated and separate locking mechanisms each have their advantages and disadvantages, but a locking mechanism that can be separated and integrated into one has not yet been seen.

[0004] Therefore, a new technical solution is needed to solve the above problems. Summary of the invention

[0005] Purpose of the invention: The purpose of the present invention is to provide a detachable electric heavy-duty truck battery compartment locking device, which has a power device that can be disassembled relative to the locking member, so that the power device can be disassembled after the locking member locks the battery compartment, thereby saving costs. At the same time, the power device and the locking member can be selectively disassembled or fixed as a whole, with strong assembly flexibility, and is suitable for various types of electric heavy-duty trucks.

[0006] Technical solution: The present invention can adopt the following technical solution:

[0007] A detachable electric heavy-duty truck battery compartment locking device comprises a locking piece for cooperating with a battery compartment frame and a power device detachably cooperating with the locking piece; the power device comprises a lower shell, a lower locking buckle portion located on the lower shell, a driver located in the lower shell, and a rotating shaft extending upward from the output end of the driver; a docking surface docking with the bottom of the upper shell is provided on the top of the lower shell, and a lower connecting end penetrating the docking surface is provided on the top of the rotating shaft; the locking piece comprises an upper shell, an upper locking buckle portion located on the upper shell and cooperating with the locking buckle portion, a screw rod penetrating the upper shell from bottom to top, a lock tongue pressure plate transversely installed on the top of the screw rod, and a sleeve extending downward from the lock tongue pressure plate and surrounding the screw rod, the lock tongue pressure plate and the sleeve and the screw rod Threaded connection; the sleeve extends downward into the upper shell; a guide ball is provided in the upper shell and is located on at least one side of the sleeve, and the position of the guide ball is fixed relative to the upper shell; a guide groove is provided on the side of the sleeve to cooperate with the guide ball, and the guide groove is bent from top to bottom; when the screw rotates, the guide groove causes the lock tongue pressure plate to move upward or downward and rotate relative to the screw under the restriction of the guide ball; the screw passes through the upper shell downward and an upper connecting end is provided at the bottom end of the screw to dock with the lower connecting end; when the top end of the lower shell cooperates with the bottom end of the upper shell, the lower connecting end docks with the upper connecting end, and the locking member is relatively fixed to the power device by locking the lower locking portion and the upper locking portion with each other, and the driver drives the rotating shaft to drive the screw to rotate forward or reverse.

[0008] Furthermore, the upper locking portion is a slot recessed inward from both sides of the upper shell, and the lower locking portion is a buckle installed on the two side surfaces of the lower shell; the bottom of the buckle is hinged to the side surface of the lower shell through a pin, and the pin is provided with a torsion spring for preventing the buckle from loosening. When the upper shell and the lower shell are docked, the buckle is snapped into the slot.

[0009] Furthermore, the power device is also provided with an anti-loosening pin located in the lower shell body and an anti-loosening shaft cooperating with the anti-loosening pin; the upper shell body is provided with a concave first anti-loosening pin hole on both sides, and the lower shell body is also provided with a plug hole perpendicular to the first anti-loosening pin hole, which is a blind hole and passes through one end face of the lower shell body; the side face of one end of the anti-loosening shaft inserted into the plug hole is provided with a second anti-loosening pin hole that passes through the anti-loosening shaft; the second anti-loosening pin hole at least partially overlaps with the first anti-loosening pin hole, and the anti-loosening pin is also inserted into the lower shell body from the first anti-loosening pin hole. The lock is inserted into the second anti-loosening pin hole, and a spring is provided at the bottom of the first anti-loosening pin hole to abut against the anti-loosening pin; one end of the anti-loosening pin extends out of the first anti-loosening pin hole to abut against the inner side of the bottom end of the buckle, and when the anti-loosening pin is in a free state in the first anti-loosening hole and the second anti-loosening pin hole, the bottom end of the buckle is pressed to make the top end of the buckle open outward, and the anti-loosening pin is pressed into the lower shell body by the bottom end of the buckle, and when the anti-loosening axis is pulled outward to make the inner wall of the second anti-loosening pin hole squeeze the anti-loosening pin, the anti-loosening pin is fixed axially, and the bottom end of the buckle is abutted by the anti-loosening pin and cannot move inward.

[0010] Furthermore, the anti-loosening pins are provided with two and are respectively located on both sides of the lower shell body to respectively abut against the buckles on both sides; the anti-loosening shafts and the plug holes are also provided with two, and the two anti-loosening shafts are connected by a cross beam located outside the lower shell body; the end surface of the lower shell body is concavely provided with a laterally extending positioning groove for accommodating the cross beam; the cross beam extends outward with a stud perpendicular to the cross beam, and the stud is connected to an anti-loosening column, and the anti-loosening column is provided with an internal thread inside which is threadedly connected to the stud, and the outer diameter of the anti-loosening column is larger than the width of the positioning groove; after the anti-loosening column rotates and abuts against the outer edge of the positioning groove, it continues to rotate so that the stud drives the cross beam to move into the positioning groove, so that the anti-loosening shaft is pulled outward.

[0011] Furthermore, both side surfaces of the sleeve are provided with symmetrically arranged guide grooves, and the opposite inner sides of the upper shell are respectively provided with a guide ball which corresponds to the guide groove one by one.

[0012] Furthermore, a sensor is also provided in the upper shell body; an inwardly recessed unlocking surface and an inwardly recessed locking surface are provided on the side of the sleeve, the locking surface and the unlocking surface are distributed at 90° relative to each other in the circumferential direction of the side of the sleeve, and the locking surface is located above the unlocking surface; when the sensor senses the locking surface or the unlocking surface, the driving device stops rotating.

[0013] Furthermore, the sensor is located above a guide ball and is locked to a position where the surface is located at the top of a guide groove corresponding to the guide ball.

[0014] Furthermore, the guide groove is L-shaped and the bending part forms an arc transition.

[0015] Furthermore, a limit pit recessed inwardly is provided on the side of the sleeve, and a limit ball and a limit spring against the rear end of the limit ball are provided in the upper shell. The front end of the limit ball is always in contact with the side of the sleeve. When the sleeve rotates until the sensor senses that it has been unlocked to the seating surface, the limit ball is inserted into the limit pit.

[0016] Beneficial effect: Compared with the prior art, the power device of the present invention can be disassembled relative to the locking member; wherein the locking member is used to lock the battery compartment frame and the bottom frame of the electric heavy truck, so one power device can be used to lock all the locking members on the vehicle, without the need for each locking device in the prior art to have both a locking member and a power device for driving the locking member to lock or unlock, thereby the technical solution of the present invention can reduce the cost of the locking device.

[0017] A further technical effect is that the power device can also be fixed and integrated with the locking member into a whole by interlocking the upper and lower locking parts, and the assembly flexibility is strong.

[0018] If a torsion spring and an anti-loosening pin are further added to prevent the buckle-type locking part from loosening, the safety of the power device and the locking member after being fixed can be increased.

[0019] The present invention also provides a technical solution for the installation method of the above-mentioned detachable electric heavy-duty truck battery compartment locking device: after the lock tongue pressure plate moves upward relative to the screw rod, the upper shell body is fixed on the frame, wherein the battery compartment frame is provided with an opening for the lock tongue pressure plate to pass through from bottom to top; the lock tongue pressure plate is located above the battery compartment frame; the power device is docked with the locking member, the lower connecting end is docked with the upper connecting end, and the locking member and the power device are relatively fixed by mutually locking the lower locking portion and the upper locking portion, and the driver drives the rotating shaft to drive the screw rod to rotate so that the lock tongue pressure plate rotates and moves downward relative to the screw rod until it is pressed on the top of the battery compartment frame, so that the battery compartment frame is squeezed and fixed between the lock tongue pressure plate and the top of the upper shell body, and then the power device and the locking member are undocking. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the battery compartment locking device of the present invention in a separated state.

[0021] Figure 2 It is a front view of the battery compartment locking device of the present invention in the unlocked state.

[0022] Figure 3 AA is a cross-sectional structural diagram of the battery compartment locking device of the present invention in an unlocked state.

[0023] Figure 4 It is a front view of the battery compartment locking device of the present invention in a locked state.

[0024] Figure 5 It is a cross-sectional structural schematic diagram CC of the battery compartment locking device of the present invention in a locked state.

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the locking member in the present invention.

[0026] Figure 7 It is a schematic diagram of the partial explosion three-dimensional structure of the power device in the present invention.

[0027] Figure 8 It is a cross-sectional view of the lower housing and the anti-loosening device of the present invention in a relaxed state.

[0028] Fig. 9 It is a cross-sectional view DD of the lower housing and the anti-loosening device of the present invention in a compressed state.

[0029] Fig.10 It is a structural schematic diagram of one side of the lock tongue pressing plate in the present invention.

[0030] Fig.11 It is a structural schematic diagram of another side surface of the lock tongue pressing plate in the present invention.

[0031] In the figure:

[0032] 1. Locking parts;

[0033] 101, locking tongue pressure plate; 1011, unlocking to the position surface; 1012, guide groove; 1013, locking to the position surface; 1014, limiting pit; 102, upper shell; 1021, threaded hole; 1022, slot; 103, rubber pad; 104, upper end cover; 1041, round table; 1042, raised block; 105, sensor; 106, screw rod; 1061, upper connecting end; 107, guide ball; 108, plane bearing; 109, tapered roller bearing; 110, auxiliary positioning screw; 111, limiting spring; 112, limiting ball;

[0034] 2. Power plant;

[0035] 201, lower shell; 2011, rectangular pit; 2012, round pit; 2013, positioning hole; 2014, boss; 2015, jack; 2016, anti-loosening pin hole; 2017, positioning groove; 202, buckle; 203, anti-loosening column; 204, anti-loosening fork frame; 2041, second anti-loosening pin hole; 2042, crossbeam; 2043, anti-loosening shaft; 205, handle; 206, rotating shaft; 2061, lower connecting end; 207, striking group; 208, driver; 209, lower end cover; 210, anti-loosening pin; 211, spring; 212, pin shaft; 213, cotter pin; 214, torsion spring. DETAILED DESCRIPTION

[0036] The present invention is described in detail below in conjunction with specific embodiments, and the same or similar reference numerals throughout the embodiments represent the same or similar elements or elements with the same or similar functions. The embodiments are intended to help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several improvements or deformations may be made to the scheme of the present invention, but they still fall within the scope of protection of the present invention.

[0037] Please combine Figures 1 to 6 As shown, the present invention provides a detachable electric heavy truck battery compartment locking device, comprising a locking member 1 for cooperating with a battery compartment frame and a power device 2 detachably cooperating with the locking member;

[0038] Please combine Figures 1 to 7 As shown, the power device 2 includes a lower housing 201, a lower locking portion located on the lower housing, a driver 208 located in the lower housing, and a rotating shaft 206 extending upward from the output end of the driver 208; the top of the lower housing is provided with a docking surface docking with the bottom of the upper housing, and the top of the rotating shaft 206 is provided with a lower connecting end 2061 penetrating the docking surface. In this embodiment, the driver 208 is a pneumatic motor.

[0039] The locking member 1 comprises an upper shell 101, an upper locking part located on the upper shell 101 and used to cooperate with the locking part, a screw rod 106 penetrating the upper shell from bottom to top, a locking tongue pressing plate 101 installed transversely on the top of the screw rod, and a sleeve 113 extending downward from the locking tongue pressing plate and surrounding the screw rod, and the locking tongue pressing plate 101 and the sleeve 113 are connected to the screw rod 106 through a trapezoidal thread. The trapezoidal thread has a self-locking ability, which can prevent the locking tongue pressing plate 101 from rotating by itself to a certain extent. The screw rod 106, the plane bearing 108 and the tapered roller bearing 109 are coaxially connected, and the relative positions are limited by the steps in the screw rod 106 and the upper shell 102, wherein the plane bearing 101 is used to bear the axial reaction force of the screw rod 106 pulling the lock tongue pressure plate 101 downward, and the tapered roller bearing 109 is used to bear the radial force that the screw rod 106 may be subjected to in some special circumstances; the rubber pad 103 and the upper end cover 104 are fixed to the upper shell 102 by screws, wherein the rubber pad 103 is used as a seal, and the upper end cover 104 is provided with a sealing groove.

[0040] The sleeve 113 extends downward into the upper shell 101; the upper shell is provided with a guide ball 107 located on at least one side of the sleeve, and the position of the guide ball is fixed relative to the upper shell; the side of the sleeve is provided with a guide groove 1012 that cooperates with the guide ball, and the guide groove 1012 is bent from top to bottom, and the guide groove 1012 is L-shaped and the bending part forms an arc transition. When the screw rotates, the guide groove 1012 allows the lock tongue pressure plate to move upward or downward and rotate relative to the screw under the restriction of the guide ball 107. The lead of the guide groove 1012 is the same as the lead of the screw 106, and the torque transmission efficiency generated by the rotation of the screw 106 on the lock tongue pressure plate 101 is higher. The two sides of the sleeve 113 are provided with symmetrically arranged guide grooves 1012, and the opposite inner sides of the upper shell 101 are respectively provided with a guide ball 107 that corresponds to the guide groove 1012. When the bolt pressure plate 101 moves, or when the guide balls 107 contact the two ends of the guide groove, the force applied to the bolt pressure plate 101 is more uniform, and the two guide balls 107 also reduce the force applied to a single ball.

[0041] The screw rod 106 passes through the upper shell 101 downward, and the bottom of the screw rod 106 is provided with an upper connecting end 1061 that docks with the lower connecting end 2061; when the top of the lower shell 201 is matched with the bottom of the upper shell 101, the lower connecting end 2061 and the upper connecting end 1061 are mutually locked by the lower locking part and the upper locking part so that the locking member and the power device are relatively fixed, and the driver drives the rotating shaft to drive the screw rod to rotate forward or reverse. In this embodiment, the upper locking part is a card slot 1022 that is recessed inward from the two sides of the upper shell, and the lower locking part is a buckle 202 installed on the two sides of the lower shell; the bottom of the buckle 202 is hinged to the side of the upper shell through a pin 212, and the pin 212 is provided with a torsion spring 214 for preventing the buckle 202 from loosening. When the upper shell and the lower shell are docked, the buckle 202 is inserted into the card slot 1022. Among them, the torsion spring 214 is the first level of anti-loosening for the buckle 202.

[0042] Recombination Figures 7 to 9 As shown, the power device is also provided with an anti-loosening pin 210 located in the lower shell body and an anti-loosening shaft 2043 cooperating with the anti-loosening pin; the lower shell body is provided with a concave first anti-loosening pin hole 2016 on both sides, and the lower shell body is also provided with a socket 2015 perpendicularly intersecting the first anti-loosening pin hole 2016, and the socket 2015 is a blind hole and passes through one end face of the upper shell body; the side face of one end of the anti-loosening shaft 2043 inserted into the socket is provided with a second anti-loosening pin hole 2041 passing through the anti-loosening shaft 2043; the second anti-loosening pin hole 2041 at least partially overlaps with the first anti-loosening pin hole 2016, and the end of the anti-loosening pin 210 inserted from the first anti-loosening pin hole into the lower shell body is also inserted into the second anti-loosening pin hole 2041, and a spring against the anti-loosening pin 210 is provided at the bottom of the first anti-loosening pin hole.

[0043] One end of the anti-loosening pin 210 extends out of the first anti-loosening pin hole 2016 to abut against the inner side of the bottom end of the buckle 202. When the anti-loosening pin 210 is in a free state in the first anti-loosening hole 2016 and the second anti-loosening pin hole 2041, the bottom end of the buckle 202 is pressed to open the top end of the buckle outward, and the anti-loosening pin 210 is pressed into the lower shell by the bottom end of the buckle 202. When the anti-loosening shaft 2043 wants to pull outward to make the inner wall of the second anti-loosening pin hole 2041 squeeze the anti-loosening pin 210, the anti-loosening pin 210 is fixed axially, and the bottom end of the buckle 202 is abutted by the anti-loosening pin 210 and cannot move inward, so as to form a second-level anti-loosening for the buckle 202.

[0044] The anti-loosening pin 210 is provided with two and is respectively located on both sides of the lower shell to respectively abut against the buckles 202 on both sides; the anti-loosening shaft 2043 and the plug hole 2015 are also two, and the two anti-loosening shafts 2043 are connected by a crossbeam 2042 located outside the lower shell; the end surface of the lower shell is provided with a transversely extending positioning groove 2017 for accommodating the crossbeam; the crossbeam is extended outward with a stud perpendicular to the crossbeam, and the stud is connected with an anti-loosening column 203, and the anti-loosening column 203 is provided with an internal thread inside and is threadedly connected with the stud, and the outer diameter of the anti-loosening column 203 is greater than the width of the positioning groove 2017; the anti-loosening column 203 rotates and abuts against the outer edge of the positioning groove 2017, and then continues to rotate so that the stud drives the crossbeam 2042 to move outward of the positioning groove 2017, so that the anti-loosening shaft 2043 is pulled outward. A handle 205 is connected to the outside of the anti-loosening column 203. The handle 205 is manually rotated to lock or release the anti-loosening pin 210.

[0045] Combination Figure 3 , Figure 5 , Fig.10 , Fig.11 As shown, a sensor 105 is also provided in the upper shell. The sensor 105 itself is threaded and can be fixed on the upper shell 102 by a nut. The side of the sleeve is provided with an unlocking position surface 1011 that is recessed inwards and a locking position surface 1013 that is recessed inwards. The locking position surface 1013 and the unlocking position surface 1011 are distributed 90 degrees relative to each other in the circumferential direction of the sleeve side, and the locking position surface 1013 is located above the unlocking position surface 1011. The sensor 105 detects the unlocking position surface 1011 and the locking position surface 1013 on the lock tongue pressure plate 101 and triggers power on, thereby determining whether the lock tongue pressure plate 101 is currently in place and whether the locking or unlocking is completed. When the sensor 105 senses the locking position surface 1013 or the unlocking position surface 1011, the driving device stops rotating. The sensor 105 is located above a guide ball 107, and the locking position surface 1013 is located at the top of the guide groove corresponding to the guide ball.

[0046] The sleeve side is also provided with an inwardly recessed limiting pit 1014, and the upper shell is also provided with a limiting ball 112 and a limiting spring 111 against the rear end of the limiting ball 112. The front end of the limiting ball 112 is always in contact with the sleeve side. When the sleeve rotates until the sensor 105 senses the unlocking to the position surface 1011, the limiting ball 112 is stuck in the limiting pit 1014. When the limiting ball 112 and the limiting pit 1014 cooperate, the lock tongue pressure plate 101 can be prevented from rotating in the unlocked state to a certain extent, forming a self-locking; when the lock tongue pressure plate 101 is rotated by a torque, the larger torque can force the limiting ball 112 to disengage from the limiting pit 101 and perform the locking action.

[0047] When the electric heavy truck is parked at the battery replacement station, the upper connection end 1061 and the lower connection end 2061 are aligned, and then the auxiliary positioning screws 110, the round table 1041 and the raised block 1042 on the upper shell 102 are matched with the positioning holes 2013, the round pits 2012 and the rectangular pits 2011 on the lower shell 201 to position the relative positions. The buckle 202 is inserted into the slot 1022.

[0048] By turning the handle 205 to drive the anti-loosening column 203 to rotate, the second anti-loosening pin hole 2041 squeezes the anti-loosening pin 210, making the anti-loosening pin 210 unable to move axially, and the inclined surface of the anti-loosening pin 210 and the lower end of the buckle 202 abut to achieve the second level of anti-loosening.

[0049] When the battery is replaced and unlocked, the driver 208 starts to operate, driving the strike group 207 and the rotating shaft 206 to start rotating. The rotating shaft 206 cooperates with the upper connecting end 1061 of the screw rod through the lower connecting end 2061 to transmit the rotation torque to the screw rod 106. Under the cooperation constraint of the guide groove 1012 and the guide ball 107, the lock tongue pressure plate 101 moves vertically upward, then spirally rises, and rotates 90 degrees in the circumferential direction. Finally, the limit pit 1014 reaches the corresponding position, and the limit ball 112 is pushed out by the limit spring 111 and cooperates with the limit pit 1014 to prevent the lock tongue pressure plate 101 from rotating in the circumferential direction again. At this time, the unlocking work is completed.

[0050] When the battery compartment is replaced, the driver 208 ventilation starts to reverse, driving the strike group 207 and the rotating shaft 206 to start rotating. The rotating shaft 206 cooperates with the upper connecting end 1061 of the screw rod through the lower connecting end 2061, and transmits the rotation to the screw rod 106. The threaded cooperation between the screw rod 106 and the lock tongue pressing plate 101 makes the lock tongue pressing plate 101 move vertically. Under the action of the applied torque, the limit ball 112 is forced to recover, and the limit spring 111 is compressed. At this time, the limit ball 112 is separated from the limit pit 1014. Under the cooperation constraint of the guide groove 1012 and the guide ball 107, the lock tongue pressing plate 101 first spirals down, rotates 90 degrees in the circumferential direction, and then vertically descends to press the battery compartment frame. When the motor torque is not enough to allow the lock tongue pressing plate 101 to continue to move downward, the strike group 207 applies an inertial force of great acceleration by separating from and re-contacting the rotating shaft 206, thereby transmitting a larger torque to ensure that the lock tongue pressing plate 101 presses the battery compartment.

[0051] After completing the above operations, the power device 2 can be used to perform the same operations on other locking parts 1 to unlock and lock the battery compartment.

[0052] The device of the present invention has a simple structure, and the locking part has multiple locking and guarantee capabilities, which is more secure. The locking device of the present invention has a stepless locking ability, can be locked at any position within the travel range, and has a long travel. It increases the versatility of battery compartments of different specifications. At the same time, the transmission efficiency of the torque of the device is improved, and a simple self-locking structure is added, which further improves the reliability of the device. In addition, the power part of the separate locking device can provide power for multiple locking parts, and there is no need to buy a complete set of locking devices, which saves costs. And in the process of general automobile driving, there is no need to carry a large amount of power parts to increase its own weight, which increases the endurance of the truck. Its two-stage anti-loosening structure can also prevent the power part from falling off by itself without external support, which increases the reliability of the separate locking device. The motor is driven by air, which protects the environment, saves the power of the car, and ensures that the truck has better endurance. The power part of this patent is not limited to pneumatic drive and strike block transmission, motor drive, gear set transmission, etc., all belong to the scope of limitation of this patent. The above is a description of the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above-mentioned specific embodiments, and those skilled in the art may make various variations or modifications within the scope of the claims, which will not affect the essential content of the present invention.

Claims

1. A detachable electric heavy truck battery compartment locking device, characterized in that: It comprises a locking member (1) for cooperating with a battery compartment frame and a power device (2) that detachably cooperates with the locking member; The power device (2) comprises a lower shell (201), a lower locking portion located on the lower shell, a driver (208) located in the lower shell, and a rotating shaft (206) extending upward from an output end of the driver; a docking surface for docking with the bottom of the upper shell is provided at the top of the lower shell, and a lower connecting end (2061) penetrating the docking surface is provided at the top of the rotating shaft (206); The locking member (1) comprises an upper shell (102), an upper locking portion located on the upper shell and used to cooperate with the lower locking portion, a screw (106) penetrating the upper shell from bottom to top, a lock tongue pressure plate (101) installed transversely on the top of the screw, and a sleeve (113) extending downward from the lock tongue pressure plate and surrounding the screw, the lock tongue pressure plate (101) and the sleeve (113) being threadedly connected to the screw (106); the sleeve extending downward into the upper shell; a guide ball (107) located on at least one side of the sleeve is provided in the upper shell, and the position of the guide ball is fixed relative to the upper shell; a guide groove (1012) cooperating with the guide ball is provided on the side of the sleeve, and the guide groove is bent from top to bottom; when the screw rotates, the guide groove (1012) causes the lock tongue pressure plate to move upward or downward and rotate relative to the screw under the restriction of the guide ball (107); The screw rod passes through the upper shell downwards and the bottom end of the screw rod is provided with an upper connecting end (1061) that is docked with the lower connecting end (2061); when the top end of the lower shell cooperates with the bottom end of the upper shell, the lower connecting end (2061) docks with the upper connecting end (1061), and the locking member and the power device are relatively fixed by mutually locking the lower locking portion and the upper locking portion, and the driver drives the rotating shaft to drive the screw rod to rotate forward or reverse; The upper locking portion is a slot (1022) recessed inwardly from both sides of the upper shell, and the lower locking portion is a buckle (202) installed on the two side surfaces of the lower shell; the bottom of the buckle (202) is hinged to the side surface of the lower shell through a pin shaft (212), and a torsion spring (214) is provided on the pin shaft (212) to prevent the buckle (202) from loosening; when the upper shell and the lower shell are docked, the buckle (202) is snapped into the slot (1022); The power device is also provided with an anti-loosening pin (210) located in the lower shell body and an anti-loosening shaft (2043) matched with the anti-loosening pin; the lower shell body is provided with concave first anti-loosening pin holes (216) on both sides, and the lower shell body is also provided with a plug hole (215) perpendicularly intersecting the first anti-loosening pin hole (216); the plug hole (215) is a blind hole and passes through an end surface of the lower shell body; a second anti-loosening pin hole (2041) passing through the anti-loosening shaft (2043) is provided on the side surface of one end of the anti-loosening shaft (2043) inserted into the plug hole; the second anti-loosening pin hole (2041) at least partially overlaps with the first anti-loosening pin hole (216); the end of the anti-loosening pin (210) inserted into the lower shell body from the first anti-loosening pin hole is also inserted into the second anti-loosening pin hole (2041), and a spring (211) abutting against the anti-loosening pin (210) is provided at the bottom of the first anti-loosening pin hole; One end of the anti-loosening pin (210) extends out of the first anti-loosening pin hole (2016) to abut against the inner side of the bottom end of the buckle (202). When the anti-loosening pin (210) is in a free state in the first anti-loosening hole (2016) and the second anti-loosening pin hole (2041), the bottom end of the buckle (202) is pressed to open the top end of the buckle outward, and the anti-loosening pin (210) is pressed into the lower shell by the bottom end of the buckle (202). When the anti-loosening shaft (2043) is pulled outward to squeeze the anti-loosening pin (210) against the inner wall of the second anti-loosening pin hole (2041), the anti-loosening pin (210) is fixed axially, and the bottom end of the buckle (202) is abutted by the anti-loosening pin (210) and cannot move inward.

2. The detachable electric heavy truck battery compartment locking device according to claim 1 is characterized in that: The anti-loosening pins (210) are provided with two and are respectively located on both sides of the lower shell body to respectively abut against the buckles (202) on both sides; the anti-loosening shafts (2043) and the plug holes (2015) are also two, and the two anti-loosening shafts (2043) are connected by a crossbeam (2042) located outside the lower shell body; the end surface of the lower shell body is provided with a transversely extending positioning groove (217) for accommodating the crossbeam inwardly; the crossbeam is provided with a stud extending perpendicular to the crossbeam outwardly, and the stud is connected to an anti-loosening column (203); the anti-loosening column (203) is provided with an internal thread inside to be threadedly connected with the stud, and the outer diameter of the anti-loosening column (203) is larger than the width of the positioning groove (217); the anti-loosening column (203) rotates to abut against the outer edge of the positioning groove (217) and then continues to rotate so that the stud drives the crossbeam (2042) to move outside the positioning groove (217), so that the anti-loosening shaft (2043) is pulled outward.

3. The detachable electric heavy truck battery compartment locking device according to claim 1 or 2, characterized in that: Both sides of the sleeve are provided with symmetrically arranged guide grooves, and the opposite inner sides of the upper shell are respectively provided with a guide ball which corresponds to the guide groove.

4. The detachable electric heavy truck battery compartment locking device according to claim 3 is characterized in that: A sensor (105) is also provided in the upper shell; an inwardly recessed unlocking position surface (1011) and an inwardly recessed locking position surface (1013) are provided on the side surface of the sleeve; the locking position surface (1013) and the unlocking position surface (1011) are distributed at 90 degrees relative to each other in the circumferential direction of the side surface of the sleeve, and the locking position surface (1013) is located above the unlocking position surface (1011); when the sensor (105) senses the locking position surface (1013) or the unlocking position surface (1011), the driving device stops rotating.

5. The detachable electric heavy truck battery compartment locking device according to claim 4 is characterized in that: The sensor (105) is located above a guide ball (107) and is locked so that the seating surface (1013) is located at the top of the guide groove corresponding to the guide ball.

6. The detachable electric heavy truck battery compartment locking device according to claim 5 is characterized in that: The guide groove is L-shaped and the bending part forms an arc transition.

7. The detachable electric heavy truck battery compartment locking device according to claim 6 is characterized in that: The side surface of the sleeve is also provided with a limiting pit (1014) recessed inwardly, and the upper shell is also provided with a limiting ball (112) and a limiting spring (111) abutting against the rear end of the limiting ball (112). The front end of the limiting ball (112) is always in contact with the side surface of the sleeve. When the sleeve rotates until the sensor (105) senses that it is unlocked to the seating surface (1011), the limiting ball (112) is inserted into the limiting pit (1014).

8. A method for installing the detachable electric heavy truck battery compartment locking device according to any one of claims 1 to 7, characterized in that: After the lock tongue pressing plate moves upward relative to the screw rod, the upper shell is fixed on the frame, wherein the battery compartment frame is provided with an opening for the lock tongue pressing plate to pass through from bottom to top; so that the lock tongue pressing plate is located above the battery compartment frame; The power device is docked with the locking piece, and the lower connecting end is docked with the upper connecting end. The locking piece and the power device are relatively fixed by locking the lower locking part and the upper locking part with each other. The driver drives the rotating shaft to drive the screw to rotate so that the lock tongue pressure plate rotates and moves downward relative to the screw until it is pressed on the top of the battery compartment frame, so that the battery compartment frame is squeezed and fixed between the lock tongue pressure plate and the top of the upper shell body, and then the power device and the locking piece are undocking.

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