CN115626045B - Locking device assembly of electric heavy-duty truck battery box - Google Patents
Locking device assembly of electric heavy-duty truck battery box Download PDFInfo
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- CN115626045B CN115626045B CN202211300696.0A CN202211300696A CN115626045B CN 115626045 B CN115626045 B CN 115626045B CN 202211300696 A CN202211300696 A CN 202211300696A CN 115626045 B CN115626045 B CN 115626045B
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- rod
- locking
- pawl
- lock
- lock rod
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/80—Exchanging energy storage elements, e.g. removable batteries
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K1/00—Arrangement or mounting of electrical propulsion units
- B60K1/04—Arrangement or mounting of electrical propulsion units of the electric storage means for propulsion
- B60K2001/0455—Removal or replacement of the energy storages
- B60K2001/0466—Removal or replacement of the energy storages from above
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/36—Vehicles designed to transport cargo, e.g. trucks
Abstract
The invention discloses a locking device assembly of an electric heavy-duty battery box, which comprises a battery bracket, a supporting block and a locking device, wherein the battery bracket is welded on an electric heavy-duty battery box, the supporting block is fixed on a peripheral frame body of the battery box, the locking device is arranged on the inner side of the battery bracket and comprises a turnover part, a driving part and a ratchet part, the turnover part comprises a lock rod and a compression block and can be self-locked, the locking force required by a rotating shaft is small, and the driving part is an air cylinder and drives the turnover part to realize locking and unlocking; the ratchet mechanism is used for mechanical locking of the lock rod to form a second locking guarantee. The device has the advantages that the locking surface can be tightly attached, the device shape and position errors can be adapted, and the battery box shaking caused by gaps is avoided; only one cylinder can drive the two sets of mechanisms to act successively, so that the cost is saved; the mechanism has a self-locking function, and can close the power of the cylinder after being fastened, so that energy is saved; the locking force required by the ratchet wheel rotating shaft is small, and the double locking ensures higher safety.
Description
Technical Field
The invention belongs to the technical field of heavy-duty truck power conversion, and particularly relates to a locking device assembly of an electric heavy-duty truck power conversion battery box.
Background
In the current electric heavy truck, a battery compartment is replaced by a battery replacement mode so as to quickly supplement battery energy. The power conversion is also divided into a plurality of modes, and the top conversion is mainly adopted at present, and the specific operation steps are as follows: firstly, a truck drives into a charging station in a special power exchange station, a lifting device lifts a battery compartment with insufficient power away, then the battery compartment with full power is lifted onto the truck, and then a locking device is needed to fix the battery compartment with a bracket below.
The conventional battery compartment locking device for electric heavy truck has various types, such as a battery box locking structure disclosed in patent publication number CN 216915503U, and is realized by directly pushing the pressing member 2 to turn over by a common cylinder 4. And a spring 7 is arranged between the output end of the air cylinder 4 and the pressing piece 2, and the locking station is kept by the elastic force of the spring 7, namely, the pressing piece 2 is self-locked in a locking state.
The battery box locking structure in the prior art can realize the functions of locking and self-locking the battery box, but has the defects. The self-locking structure is realized by directly adopting a spring 7. The spring is easy to bend and cannot keep stable in the axial direction when encountering transverse external force, the spring is directly used as a middle rigid component to be connected with the pressing piece 2, the defect is amplified, the battery box shakes or is out of position when jolting or collision is encountered in the running process of the vehicle, the battery box can transmit the external force to the locking structure, the bending or twisting of the spring is easy to cause the locking failure of the battery box, and potential safety hazards occur.
A new solution is needed to solve the above problems.
Disclosure of Invention
The invention aims to: the patent provides an electronic heavy truck battery box locking means assembly to solve the problem that bending or distortion hidden danger appears as being to the butt casting die auto-lock easily in the self-locking mechanism to locking mechanism that exists among the prior art, further solve the problem that elastic component auto-lock intensity is not enough simultaneously.
The technical scheme is as follows: the invention adopts the following technical scheme:
the locking device assembly of the electric heavy truck battery box comprises a battery bracket, a plurality of locking devices arranged on the battery bracket and a supporting block arranged on a battery box frame; the locking device comprises a mounting plate, a driver arranged on the mounting plate, a lock rod arranged on the battery bracket and a locking device; the lock rod comprises an installation part positioned at the bottom end of the battery bracket, a straight rod part which is bent and extended upwards from the installation part to one end extending from the installation plate, and a locking part which is bent and extended from the top end of the straight rod part to the direction of the supporting block; the front end of the locking part is provided with a compression block matched with the supporting block; the contact area is a compression surface when the supporting block and the compression block are contacted with each other; a lock rod mounting frame is arranged below the battery bracket, and the bottom end of the lock rod is hinged to the lock rod mounting frame through a lock rod overturning shaft; the center of the rotating shaft of the lock rod overturning shaft is positioned at the outer side of the normal line of the pressing surface; the output end of the driver is coaxially connected with a push rod, two stop rods are arranged on the outer side of the push rod, a straight rod part of the lock rod is positioned between the two stop rods, and the distance between the two stop rods is larger than the width of the straight rod part; when the push rod pushes outwards, the compression block of the lock rod is locked with the support block, and when the push rod retracts, the compression block of the lock rod is separated from the support block for unlocking;
the locking device comprises a ratchet wheel, a pawl and a deflector rod, wherein the ratchet wheel is arranged on the lock rod overturning shaft and is mutually fixed with the installation part of the lock rod; the bottom end of the pawl is matched with the ratchet wheel, and the top end of the pawl is hinged on the battery box frame or the bottom of the mounting frame through the pawl rotating shaft seat; an extension rod extends upwards from the top end of the pawl; the bottom of the deflector rod is hinged on the mounting plate through a deflector rod rotating shaft seat; a longitudinal groove is formed in the part of the deflector rod, which is positioned above the hinged position of the deflector rod and the deflector rod rotating shaft seat, and a deflector rod head matched with the extension rod of the pawl is arranged in the part of the deflector rod, which is positioned below the hinged position of the deflector rod and the deflector rod rotating shaft seat; the outer side surface of the push rod is provided with a cylindrical rod positioned in the groove; the driving rod is driven to rotate around the driving rod rotating shaft seat by sliding the cylindrical rod in the groove;
when the push rod is retracted, the cylindrical rod presses the shift rod to enable the shift rod head to be propped against the extension rod of the pawl forwards to unlock the pawl and the ratchet, and after the stop rod on the outer side of the push rod pulls the lock rod back to enable the compression block of the lock rod to be separated from the supporting block to unlock; when the push rod extends forwards, the cylindrical rod lifts the shifting rod downwards to separate the shifting rod head from the extending rod of the pawl, the pawl returns to be matched with the ratchet wheel, and the stop rod at the outer side of the push rod pushes the locking rod forwards to enable the pressing block of the locking rod to press the supporting block to form locking.
Further, a pawl spring is arranged between the pawl and the battery bracket, and the pawl spring provides pretightening force for the cooperation of the pawl and the ratchet wheel.
Further, a lock rod spring is arranged between the straight rod part of the lock rod and the battery bracket, and the lock rod spring provides pretightening force for the cooperation of the compression block and the supporting block.
Further, the compressing block is hinged to the front end of the locking part.
Further, an opening is arranged on the mounting plate for the straight rod part of the lock rod, the extension rod of the pawl and the deflector rod head to pass through.
Further, the driver is a cylinder.
The beneficial effects are that: compared with the prior art, the battery bracket has the advantages that the lock rod has self-locking capability by redesigning the structure of the lock rod, the rotating shaft of the concrete lock rod is positioned at the bottom of the battery bracket frame body, and the center of the rotating shaft is positioned at the outer side of the normal line of the joint surface, so that the lock rod has self-locking property, after the lock rod is pressed in place, the lock rod can automatically keep the locking position and cannot fall back and loose, and the force of the battery box acting on the pressing block can enable the lock rod to be pulled more tightly. The self-locking structure is a rigid structure of the lock rod, is not easy to deform and is little influenced by external force. Through this self-locking structure, can close the driver power after locking lever and battery box locking, practiced thrift the electric power, increased the duration of electronic heavy truck. Meanwhile, the locking device has double locking guarantee, a ratchet mechanism is added on the basis of self locking, accidental release of the lock catch is prevented, and safety is further improved; and only one driver is adopted to drive the two sets of mechanisms of the lock rod and the locking device to act successively, so that the structure is simple, and the cost is saved.
Drawings
Fig. 1 is a schematic structural diagram of an electric heavy-duty battery box locking device assembly according to an embodiment of the present invention;
FIG. 2 is an overall assembly view of an embodiment of the present invention in a locked state;
fig. 3 is a schematic structural diagram of a locking mechanism assembly of an electric heavy-duty battery box locking device according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a part of a locking mechanism of an electric heavy-duty battery box locking device assembly according to an embodiment of the present invention;
FIG. 5 is a partial state diagram of the pawl unlocked from the ratchet and the lock lever unlocked from the support block;
FIG. 6 (a) is a force condition of the lock lever according to the embodiment of the present invention; fig. 6 (b) is a schematic diagram showing the equivalent force applied to the lock lever to the center of the rotation shaft according to the embodiment of the present invention.
In the figure:
1. a battery bracket;
2. a quick-change connector;
3. a locking mechanism;
31. a flipping member; 311. a lock lever; 312. a lock lever rotating shaft seat; 313. a lock lever turning shaft; 314. a compacting block rotating shaft; 315. a compaction block; 316. a lock lever spring;
32. a driving part; 321. a cylinder; 322. a cylinder support; 323. a cylinder push rod;
33. a ratchet member; 331. a ratchet wheel; 332. a pawl; 333. a pawl spring; 334. a pawl rotating shaft seat; 335. a pawl rotation shaft; 336. a deflector rod rotating shaft seat; 337. a pawl lever;
34. mounting plate
4. A support block;
5. and a battery box.
Detailed Description
The present invention is described in detail below with reference to specific embodiments, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The examples are intended to aid those skilled in the art in further understanding the present invention and are not intended to limit the invention in any way. It should be noted that, for those skilled in the art, several improvements or modifications can be made to the present invention without departing from the concept of the present invention, and still fall within the protection scope of the present invention.
The present invention is described in detail below with reference to specific embodiments, in which the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The examples are intended to aid those skilled in the art in further understanding the present invention and are not intended to limit the invention in any way. It should be noted that, for those skilled in the art, several improvements or modifications can be made to the present invention without departing from the concept of the present invention, and still fall within the protection scope of the present invention.
The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.
The embodiment of the invention provides a locking device assembly of a battery box of a battery changing heavy truck, which is used for reliably locking the battery box on a battery bracket of a truck and ensuring the safety of a driving process.
Referring to fig. 1 to 2, the battery box locking device assembly of the electric heavy truck comprises a battery bracket 1, a locking mechanism 3, a supporting block 4 and a battery box 5, wherein the battery bracket 1 is fixedly connected to the electric heavy truck, and the battery box 5 can be placed on the battery bracket 1; the supporting block 4 for locking joint is fixed on the outer frame body of the battery box 5, and can be welded, bolted or connected in other modes; the locking device 3 comprises a turnover part 31, a driving part 32 and a ratchet part 33, wherein the installation seat of the turnover part 31 is fixedly connected to the bottom of the outer frame of the battery bracket 1, and can be welded, bolted or connected in other modes; the driving member 32 and the ratchet member 33 are fixed to a mounting plate 34, and the mounting plate 34 is fixed to the inside of the outer frame of the battery bracket 1.
Referring to fig. 1, the locking devices 3 are at least four and at most eight, and the locking devices 3 are distributed on the peripheral frame of the battery bracket 1 at intervals, so that reliable and stable locking of the upper battery box 5 is realized.
Referring to fig. 2 to 3, the supporting blocks 4 are installed above square tubes of a bottom frame of the battery box 5, and the number of the supporting blocks is consistent with that of the locking mechanisms 3, so that the supporting blocks are used for matching and fastening the battery box. The joint surface of the supporting block 4 is processed into an inclined surface, and a layer of rubber or other flexible materials can be padded for buffering. When the battery box is locked, the lock rod 311 of the locking mechanism 3 can turn outwards to drive the lower surface of the compression block 315 to be jointed with the upper inclined surface of the support block 4, and after the compression block is pressed in place, the support block 3 and the compression block 315 are tightly locked together, so that the reliable locking of the battery box is realized. The compression block 315 can rotate relative to the lock rod 311, so that the compression block can adapt to different heights and slopes of the inclined plane of the support block, close fitting is realized, machining and assembly errors of parts can be ignored, joint surface gaps existing in a conventional locking scheme are eliminated, the battery box is prevented from shaking in the driving process, and higher safety is realized.
Referring to fig. 3 to 5, the lock mechanism 3 includes a flipping member 31, a driving member 32, a mounting plate 34, and a ratchet member 33. The lever pivot seats 336 of the drive member 32 and the ratchet member 33 are fixed to the mounting plate 34, and the mounting plate 34 is fixed to the inside of the frame of the battery bracket 1. The lock lever of the flipping part 31 and the ratchet 331 of the ratchet part 33 are mounted on the same rotation shaft 313, and torque is transmitted through the key, and when the ratchet 331 is clamped by the pawl 332, locking of the lock lever 311 is completed. The shaft seat of the lock lever 311 and the ratchet 331 is fixed at the bottom of the frame of the battery bracket 1, and can be welded or connected by bolts. Different parts of the ratchet part 33 are installed at different positions, wherein the ratchet 331 is installed on the lock lever rotating shaft 313, and radial constraint is performed through keys; the pawl pivot seat 334 is fixed on the inner side of the battery bracket 1 and positioned below the mounting plate 34, and can be fixed by welding or bolts; the lever pivot mount 336 is secured to the mounting plate 34. The mounting plate 34 is formed by welding steel plates and angle irons, has high strength and rigidity, and can ensure structural safety.
Referring to fig. 3 to 5, the flipping part 31 includes a locking lever 311, a pressing block 315, a pressing block rotating shaft 314, a locking lever spring 316, a locking lever rotating shaft 313, and a locking lever rotating shaft seat 312. The lock lever 311 includes a mounting portion 3111 at the bottom end of the battery bracket 1, a straight bar portion 3112 extending upward from the mounting portion 3111 toward one end of the mounting plate 34, and a lock portion 3113 extending from the top end of the straight bar portion 3112 toward the support block 4; the front end of the locking part is provided with a compression block matched with the supporting block; the area of contact when the support block 4 and the pressing block 315 are in contact with each other is a pressing surface.
The driving part 32 comprises a cylinder 321, a cylinder support 322 and a cylinder push rod 323, wherein the cylinder is arranged on the mounting plate 34 through the front and rear supports, the cylinder push rod 323 is arranged at the front end of a piston rod of the cylinder through threads, and the cylinder push rod 323 is locked through nuts. The ratchet mechanism 33 includes a ratchet 331, a pawl 332, a pawl spring 333, a pawl pivot seat 334, a pawl pivot 335, a lever 337, and a lever pivot seat 336. An extension rod 3321 extends upward from the top end of the pawl 332; the bottom of the deflector rod 337 is hinged on the mounting plate 34 through a deflector rod rotating shaft seat 336; the part of the deflector rod 337 above the hinge position of the deflector rod and the deflector rod rotating shaft seat is provided with a longitudinal groove 3371, and the part of the deflector rod 3371 below the hinge position of the deflector rod and the deflector rod rotating shaft seat is provided with a deflector rod head 3372 matched with the extension rod 3321 of the pawl.
Referring to fig. 3, two cylinder bars 3231 are provided at one side of the cylinder push rod 323, the lock rod 311 is clamped in the middle, and the lock rod 311 is driven by the two cylinder bars 3231 to turn back and forth, so as to realize locking and unlocking functions. A spring 316 is installed between the lock lever 311 and the battery bracket 1 to provide a certain pre-tightening locking force to the lock lever 311, preventing the lock lever 311 from being accidentally retracted. Referring to fig. 4, a slightly thinner cylindrical rod 3232 is provided on the other side of the cylinder push rod 323, and slides in a groove 3371 to drive the shift rod 337 to rotate around the shaft, and then the other end of the shift rod 337 can pry the pawl 332 to rotate around the shaft, so that unlocking and locking of the ratchet 331 are realized. The ratchet 331 and the lock lever 311 are axially fixed by a flat key on the rotation shaft, so that the lock of the ratchet mechanism 33 secures the reversing member 31. A pawl spring 333 is also arranged between the pawl 332 and the battery carrier 1 for providing a pre-tightening force to prevent accidental release of the pawl 332.
The slope gradient of the supporting block 4 is smaller, and the lock rod overturning shaft 313 is positioned at the outer side of the bottom of the frame body of the battery bracket 1. On the cross section of the device, the center of the rotating shaft of the lock rod turnover shaft 313 is positioned at the outer side of the normal line of the pressing surface, so that the turnover mechanism has self-locking property. When the air cylinder 321 is pushed forward in place, a pretightening force exists between the lock rod 311 and the battery box, so that the lock rod 311 keeps a static state with balanced stress, and the lock rod cannot fall back and loosen under the action of gravity after the acting force of the air cylinder 321 is removed. In the driving process, the battery box generates vertical upward impact force and forward friction force along the joint surface to the lock rod 311 due to jolt, and forms an oblique upward total external force to the lock rod, wherein the external force is equivalent to the lock rod turning shaft 313, so that a moment for turning the lock rod 311 outwards is generated and balanced with the gravity moment, the lock rod 311 is always in a static state, and the self-locking function of the mechanism is realized. Assuming the limit state of infinite locking force, the direction of the acting force of the battery box on the lock rod 311 is coincident with the normal line of the joint surface, and because the center of the rotating shaft of the lock rod turning shaft 313 is positioned outside the normal line of the joint surface, the acting force of the battery box on the lock rod 311 is equivalent to the position of the lock rod turning shaft 313, and can always generate an everting moment to balance the moment, so that the lock rod is kept static, and the self-locking function is realized.
Specifically, referring to fig. 6 (a), a schematic diagram of the actual stress situation of the lock lever is shown, and fig. 6 (b) is a schematic diagram of the equivalent of the acting force to the rotating shaft. The lock rod is subjected to gravity G, a rotating shaft pulling force F1, a battery box pressure force F2 and a friction force F, wherein the pressure force F2 and the friction force F of the battery box can be equivalent to an acting force F3. In the figure (a), the k point is the centroid of the lock rod, the o point is the center of the rotating shaft, and the p point is the action point of the joint surface. The lock rod is subjected toThe forces to be applied are equivalent to those at the center o point of the rotating shaft, namely as shown in the figure (b). Wherein M is g As the moment generated after the gravity G is equivalent, M f3 The moment generated after the equivalent of the battery box locking acting force F3 is generated. Since the rotation axis center o is located outside the normal line of the joint surface, the moment M f3 Must be clockwise, as opposed to a gravitational moment. After the cylinder pushes the lock rod forward in place, the lock rod can be tightly pressed on the support block of the battery box, and a pretightening force, namely F3, is formed between the lock rod and the support block. Moment M generated by force F3 when the truck is stationary f3 And gravity moment M g The two moments are equal and the three forces G, F, F3 are balanced, so that the mechanism can maintain a locked operating state when the cylinder is de-energized. During the running process of the truck, the battery box generates upward impact force to the locking device due to jolt, and the impact force is superposed on the pretightening force, so that the acting force F2 becomes large, the angle between F3 synthesized with the friction force and the normal line of the joint surface becomes small, and the generated moment M f3 Still with gravity moment M g Maintaining balance. In this process, in order to accommodate the change in force F3, the force F1 of the spindle against the lock lever also changes in magnitude and direction, so that the three forces remain balanced. Therefore, the stress state of the lock rod is always balanced and is in a static state, so that the device is always locked, and the lock rod has a good self-locking effect. In the limit state, assuming that the impact force is infinite, the force F3 coincides with the normal line of the joint surface, and the force F3 still generates a clockwise moment M because the center o of the rotating shaft is located outside the normal line f3 The locking device is balanced with the anticlockwise gravity moment, so that the locking rod is static, and therefore, the locking device has a self-locking function due to the structural characteristics of the locking device.
The specific manner in which the invention operates can be summarized with reference to the drawings of embodiments and the functional description above: when the truck is stopped at the power exchange position, the driver operates a battery box unlocking button, the air valve acts, and the piston rod of the air cylinder 321 drives the push rod 323 at the front end to retract. During the retraction of the push rod 323, the cylindrical guide post arranged on the side surface of the push rod 323 slides in the groove of the deflector rod 337 to drive the deflector rod 337 to rotate, and when the deflector rod 337 rotates, the pawl 332 is pried to rotate around the shaft, so that the ratchet 331 is released. In the locked state, the lock lever 311 is pressed by the rear stop post of the push rod 323 and is not in contact with the front stop post, so that the lock lever 311 is not driven to turn backwards in the beginning stage of the cylinder retraction, but is always in the pressed state. When the cylinder 321 is retracted to a certain extent, the ratchet mechanism is completely unlocked, the front baffle post of the push rod 323 can contact the lock rod 311 at the moment, and then the lock rod 311 is driven to turn backwards along with the retraction of the cylinder, so that the unlocking of the battery box is realized, and then the battery box can be replaced by using the crane.
When the battery box is replaced, the driver can operate the battery box locking button, and at the moment, the air cylinder 321 is pushed forwards, and the lock rod 311 can be turned forwards along with the push rod under the action of the tension force of the spring 316. After the pressing block 315 is completely pressed against the inclined surface of the supporting block 4, the lock lever 311 is not turned forward any more. After the rear stop lever of the push rod 323 contacts the lock rod 311, the pushing force of the air cylinder 321 can continuously compress the lock rod 311, so that the locking surface is compressed more tightly. In the process of forward turning of the lock lever 311, the teeth of the pawl 332 do not block the ratchet 331, so that the lock lever 311 can smoothly act to the locking position to complete the locking operation of the whole battery box.
Because the device provided by the invention has the double locking guarantee of self-locking and ratchet locking, the air pump can be closed without the need of ventilation of the air cylinder all the time after the locking is finished, the energy of an electric heavy truck is saved, and the battery endurance is increased.
The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the claims without affecting the spirit of the invention.
Claims (6)
1. The locking device assembly of the electric heavy truck battery box comprises a battery bracket, a plurality of locking devices arranged on the battery bracket and a supporting block arranged on a battery box frame; the locking device is characterized by comprising a mounting plate, a driver arranged on the mounting plate and a lock rod arranged on the battery bracket; the lock rod comprises an installation part positioned at the bottom end of the battery bracket, a straight rod part which is bent and extended upwards from the installation part to one end extending from the installation plate, and a locking part which is bent and extended from the top end of the straight rod part to the direction of the supporting block; the front end of the locking part is provided with a compression block matched with the supporting block; the contact area is a compression surface when the supporting block and the compression block are contacted with each other; a lock rod mounting frame is arranged below the battery bracket, and the bottom end of the lock rod is hinged to the lock rod mounting frame through a lock rod overturning shaft; the center of the rotating shaft of the lock rod overturning shaft is positioned at the outer side of the normal line of the pressing surface; the output end of the driver is coaxially connected with a push rod, two stop rods are arranged on the outer side of the push rod, a straight rod part of the lock rod is positioned between the two stop rods, and the distance between the two stop rods is larger than the width of the straight rod part; when the push rod pushes outwards, the compression block of the lock rod is locked with the support block, and when the push rod retracts, the compression block of the lock rod is separated from the support block for unlocking;
the locking device comprises a ratchet wheel, a pawl and a deflector rod, wherein the ratchet wheel is arranged on the lock rod overturning shaft and is mutually fixed with the installation part of the lock rod; the bottom end of the pawl is matched with the ratchet wheel, and the top end of the pawl is hinged on the battery box frame or the bottom of the mounting frame through the pawl rotating shaft seat; an extension rod extends upwards from the top end of the pawl; the bottom of the deflector rod is hinged on the mounting plate through a deflector rod rotating shaft seat; a longitudinal groove is formed in the part of the deflector rod, which is positioned above the hinged position of the deflector rod and the deflector rod rotating shaft seat, and a deflector rod head matched with the extension rod of the pawl is arranged in the part of the deflector rod, which is positioned below the hinged position of the deflector rod and the deflector rod rotating shaft seat; the outer side surface of the push rod is provided with a cylindrical rod positioned in the groove; the driving rod is driven to rotate around the driving rod rotating shaft seat by sliding the cylindrical rod in the groove;
when the push rod is retracted, the cylindrical rod presses the shift rod to enable the shift rod head to be propped against the extension rod of the pawl forwards to unlock the pawl and the ratchet, and after the stop rod on the outer side of the push rod pulls the lock rod back to enable the compression block of the lock rod to be separated from the supporting block to unlock; when the push rod extends forwards, the cylindrical rod lifts the shifting rod downwards to separate the shifting rod head from the extending rod of the pawl, the pawl returns to be matched with the ratchet wheel, and the stop rod at the outer side of the push rod pushes the locking rod forwards to enable the pressing block of the locking rod to press the supporting block to form locking.
2. The electric heavy truck battery compartment locking device assembly of claim 1, wherein: a pawl spring is arranged between the pawl and the battery bracket, and the pawl spring provides pretightening force for the cooperation of the pawl and the ratchet wheel.
3. The electric heavy truck battery compartment locking device assembly of claim 1, wherein: a lock rod spring is arranged between the straight rod part of the lock rod and the battery bracket, and the lock rod spring provides pretightening force for the cooperation of the compression block and the supporting block.
4. The electric heavy truck battery compartment locking device assembly of claim 1, wherein: the compressing block is hinged to the front end of the locking part.
5. The electric heavy-duty truck battery compartment locking device assembly of any one of claims 1 to 4, wherein: the mounting plate is provided with an opening for the straight rod part of the lock rod, the extension rod of the pawl and the deflector rod head to pass through.
6. The electric heavy-duty truck battery compartment locking device assembly of any one of claims 1 to 4, wherein: the driver is an air cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211300696.0A CN115626045B (en) | 2022-10-24 | 2022-10-24 | Locking device assembly of electric heavy-duty truck battery box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211300696.0A CN115626045B (en) | 2022-10-24 | 2022-10-24 | Locking device assembly of electric heavy-duty truck battery box |
Publications (2)
| Publication Number | Publication Date |
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| CN116834531B (en) * | 2023-03-27 | 2023-12-15 | 江苏众如金属科技有限公司 | Battery box fixing device and method for electric truck |
| CN117134063B (en) * | 2023-10-24 | 2023-12-26 | 泉州装备制造研究所 | Locking mechanism of heavy-duty truck battery box |
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| CN217022257U (en) * | 2022-04-12 | 2022-07-22 | 北京胜能能源科技有限公司 | Locking mechanism, locking mechanism assembly and heavy truck |
| CN217074014U (en) * | 2022-02-21 | 2022-07-29 | 上海能辉科技股份有限公司 | Hook type fixing and locking mechanism for battery box of electric heavy truck |
| CN217347473U (en) * | 2022-05-27 | 2022-09-02 | 四川智锂智慧能源科技有限公司 | Locking device and vehicle |
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| EP2279981A1 (en) * | 2009-07-30 | 2011-02-02 | Jungheinrich Aktiengesellschaft | Locking device for a battery block for an industrial truck |
| CN207938722U (en) * | 2018-02-02 | 2018-10-02 | 大族激光科技产业集团股份有限公司 | A kind of battery modules shaping pressing device |
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| CN215971190U (en) * | 2021-10-11 | 2022-03-08 | 无锡范特西物联技术有限公司 | Charging and discharging base locking device |
| CN113928173A (en) * | 2021-11-15 | 2022-01-14 | 北京胜能能源科技有限公司 | Locking mechanism and battery module |
| CN217074014U (en) * | 2022-02-21 | 2022-07-29 | 上海能辉科技股份有限公司 | Hook type fixing and locking mechanism for battery box of electric heavy truck |
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| CN217347473U (en) * | 2022-05-27 | 2022-09-02 | 四川智锂智慧能源科技有限公司 | Locking device and vehicle |
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| CN115626045A (en) | 2023-01-20 |
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