Low energy consumption cooling device for pure electric tractor

Abstract

The present application relates to pure electric traction vehicle technical field, concretely for a kind of low energy consumption cooling device for pure electric traction vehicle, including heat dissipation fan and hand generator, the heat dissipation fan and hand generator cooperate pure electric traction vehicle use and all be set on pure electric traction vehicle, the hand generator can be used as to the battery charging of installation on pure electric traction vehicle and to heat dissipation fan power supply, still include traction frame, drive rod, drive component and adjusting component, the traction frame is set on pure electric traction vehicle upper arm.The hand generator and drive component of the present application are set, can drive hand generator to generate electricity in the process of pure electric traction vehicle braking, and when pure electric traction vehicle turns and brakes, improve the power generation efficiency of hand generator, realize the auxiliary energy supply of battery and heat dissipation fan while reducing the system energy consumption of heat dissipation fan when working, to ensure the driving range of pure electric traction vehicle.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pure electric traction vehicles, in particular to a low-energy-consumption cooling device for a pure electric traction vehicle. BACKGROUND

[0002] A pure electric traction vehicle is a new type of energy storage battery driven car, which is used for cargo transportation and traction operation. Since the weight of the cargo pulled by the pure electric traction vehicle during work is not fixed, the greater the weight of the pulled cargo, the higher the output power required by the electric motor, and the greater the operating load of the electric motor, and the higher the heat generated by the internal winding of the electric motor, so the electric motor needs to be cooled to ensure normal use.

[0003] The conventional way includes air cooling, liquid cooling and heat pipe cooling, among which air cooling includes natural convection cooling and forced convection cooling. Natural convection cooling is to use the air flow generated during the driving of the traction vehicle to realize the heat exchange between the inside and outside of the electric motor, so as to realize the cooling of the electric motor and ensure the normal working state of the electric motor. However, when the outdoor temperature in the factory area is high in summer, the heat exchange efficiency between the inside and outside of the electric motor will be limited by the natural convection method, resulting in the accumulation of heat in the electric motor. In order to maintain the same mechanical output power, the electric motor needs to obtain more electric energy from the battery, thereby increasing the energy consumption of the battery and shortening the driving range of the electric traction vehicle. In view of the above problems, the prior art has a good solution: such as a new energy vehicle motor with cooling function. By installing two groups of fans inside the working shell, the connection between the motor body and the shaft can be cooled in a forced convection manner during work, and the hot air blown by the fan can be cooled to improve the cooling effect and reduce the energy consumption required by the motor to maintain the same output power. However, there are still problems: since the cooling fan also uses the battery on the traction vehicle as a power source, and when accelerating and turning, the electric motor needs to provide output torque to increase the output power. In order to ensure the normal cooling of the electric motor, the output power of the cooling fan needs to be increased, which will also increase the energy consumption of the battery and still affect the driving range of the pure electric traction vehicle.

[0004] Therefore, in order to solve the above problems, a low-energy-consumption cooling device for a pure electric traction vehicle is proposed. SUMMARY

[0005] The low-energy consumption cooling device for the pure electric traction vehicle aims to solve the problem that the energy consumption of the battery is increased when the output power of the cooling fan is increased to ensure the heat dissipation effect of the motor, thereby reducing the driving mileage of the traction vehicle.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0007] The low-energy consumption cooling device for the pure electric traction vehicle comprises a cooling fan and a hand-cranking generator, the cooling fan and the hand-cranking generator are used in cooperation with the pure electric traction vehicle and are arranged on the pure electric traction vehicle, the hand-cranking generator can be used for charging the battery installed on the pure electric traction vehicle and supplying power to the cooling fan, and the low-energy consumption cooling device further comprises a traction frame, a driving rod, a driving assembly and an adjusting assembly, the traction frame is arranged on the pure electric traction vehicle, the driving rod is arranged on the hand-cranking generator, the driving assembly is arranged on the driving shaft and is connected with the traction frame through the driving rod, the driving assembly drives the driving shaft to rotate in one direction through the driving rod when the pure electric traction vehicle is changing speed, and the adjusting assembly is arranged on the traction frame and reduces the power arm of the driving rod through the traction frame when the pure electric traction vehicle is turning.

[0008] Preferably, the traction frame comprises a fixed rod, a traction plate, a spring and a bolt, the fixed rod is arranged on the pure electric traction vehicle, the traction plate is sleeved on the fixed rod, the spring is sleeved on the fixed rod and is connected with the traction plate and the fixed rod at both ends, and the bolt is arranged through the traction plate, and the stiffness of the spring is arranged to increase from the front end to the tail end of the pure electric traction vehicle.

[0009] It can be known that the pure electric traction vehicle and the vehicle compartment for transporting goods are usually connected through a hook, when the pure electric traction vehicle accelerates or brakes during driving, a hard collision will occur at the position of the hook, which affects the service life of the hook, therefore, the present application is adopted. Through the spring and the stiffness setting of the spring, the elastic deformation of the spring can effectively buffer when the pure electric traction vehicle accelerates or brakes, thereby protecting the connection between the pure electric traction vehicle and the vehicle compartment.

[0010] Preferably, the driving assembly comprises a U-shaped rod, a sliding block, a shaft pin I, a support shaft, a toothed plate and a gear, the U-shaped rod is arranged on the traction plate, the sliding block is sleeved on the U-shaped rod, the shaft pin I is arranged on the sliding block, the support shaft is arranged on the hand-cranked generator, the driving rod comprises an inner rod and an outer tube, the inner rod is sleeved with the outer tube, one end of the inner rod located outside the outer tube is sleeved with the shaft pin I, the outer tube is connected with the support shaft, the gear is arranged on the driving shaft, the toothed plate is arranged on the end of the outer tube and the surface of the toothed plate is provided with an arc-shaped opening, the inside of the arc-shaped opening is provided with a driving assembly, when the outer tube rotates around the support shaft as the rotating shaft, the driving assembly drives the driving shaft to rotate through the gear.

[0011] It can be known that the pure electric traction vehicle is powered by the battery when driving, and the battery is also responsible for supplying energy to the cooling fan. Since the kinetic energy during the driving process of the pure electric traction vehicle is converted from the electric energy of the battery, the kinetic energy of the vehicle compartment cannot be recycled during the braking of the pure electric traction vehicle, which leads to waste and affects the power supply time of the battery. Therefore, the scheme is adopted. Through the driving assembly and the hand-cranked generator, the kinetic energy of the vehicle compartment during the braking process of the pure electric traction vehicle can be used to drive the driving shaft of the hand-cranked generator to rotate quickly, so as to realize automatic power generation of the hand-cranked generator, reduce the kinetic energy loss during the driving process of the pure electric traction vehicle, and also assist in supplying power to the battery and the cooling fan to a certain extent. The cooling effect of the cooling fan can be ensured while the energy consumption is reduced, thereby prolonging the working time of the battery.

[0012] Preferably, the adjusting assembly comprises a hanging piece, a pull rod, a shaft pin II, a sleeve ring, a connecting rod, a rectangular frame, a driving block and an adjusting block, the hanging piece is arranged on one side of the traction plate and comprises an annular plate and an L-shaped hook connected with each other, a strip-shaped opening is formed in the traction plate, the pull rod is arranged through the strip-shaped opening and connected with the sliding block, the shaft pin II is arranged through the annular plate, the sleeve ring is sleeved on the shaft pin II, the connecting rod is arranged on the sleeve ring, the rectangular frame is arranged on the connecting rod and sleeved with the pull rod, the driving block is arranged in the interior of the rectangular frame and the surface of the driving block is provided with a driving groove, the adjusting block is arranged on the pull rod and connected with the driving groove in a matched mode, when the annular plate rotates relative to the pure electric traction vehicle, the adjusting block reduces the length of the inner rod located outside the outer tube through the driving groove.

[0013] It can be known that the pure electric traction vehicle needs to overcome additional lateral force when turning to keep the stability and driving track of the vehicle, which needs the electric motor to provide greater torque and output power, and the electric motor needs the battery to provide more electric energy in the process of providing greater torque and output power, causing more electric energy loss of the battery, so the scheme is adopted. By setting the adjusting assembly, the distance between the shaft pin I and the supporting shaft can be shortened when the pure electric traction vehicle turns, and the distance between the shaft pin I and the supporting shaft is determined by the turning angle, the greater the turning angle, the shorter the distance between the shaft pin I and the supporting shaft, so that the power arm of the driving rod can be reduced, and when the electric motor provides greater torque and output power, the driving arm can be reduced to cooperate with the braking action during turning to drive the driving shaft on the hand-operated generator faster, thereby improving the power generation efficiency, further reducing the energy consumption of the battery, and realizing low-energy consumption cooling of the electric motor of the pure electric traction vehicle.

[0014] Preferably, the adjusting assembly comprises an elastic telescopic rod, the elastic telescopic rod is arranged in the inner ring of the arc-shaped opening, the free end of the elastic telescopic rod is engaged with the gear, and the free end is provided in a wedge shape.

[0015] It can be known that the driving shaft of the hand-operated generator can only rotate in one direction to achieve the power generation effect, by adopting the above scheme, the elastic telescopic rod and the wedge-shaped surface arranged at the free end of the elastic telescopic rod can drive the driving shaft to rotate in one direction when the tooth plate reciprocatingly rotates with the outer tube as the rotating shaft, thereby ensuring the normal power generation function of the hand-operated generator, realizing the auxiliary power supply effect of the battery and the cooling fan, and further realizing the low-energy consumption cooling of the electric motor of the pure electric traction vehicle.

[0016] Preferably, the driving groove comprises an inner groove and a groove opening, the inner groove is arranged in the inner part of the driving block, the groove opening is arranged on the surface of the driving block and is in communication with the groove opening, the adjusting block comprises an adjusting rod and an adjusting ball, the adjusting rod is arranged on the pull rod and penetrates through the groove opening, and the adjusting ball is arranged on the adjusting rod and is slidingly arranged in the inner part of the inner groove.

[0017] By adopting the above scheme, when the electric traction vehicle turns, the driving block will approach or move away from the pure electric traction vehicle in different turning directions, so that the adjusting rod can be driven to move between the cooling fan and the hand-operated generator through the guiding action of the inner groove and the adjusting ball, thereby reducing the distance between the shaft pin I and the supporting shaft when the pure electric traction vehicle deviates from the neutral position (the neutral position is the straight driving direction), that is, the power arm of the driving rod is automatically reduced during the turning of the pure electric traction vehicle, thereby speeding up the power generation speed of the hand-operated generator during braking during the turning of the pure electric traction vehicle, ensuring the auxiliary power supply of the battery and the cooling fan, and further reducing the energy consumption of the battery caused by the operation of the cooling fan.

[0018] Preferably, the distance between the middle axis of the shaft pin two and the pure electric traction vehicle is equal to the distance between the middle axis of the shaft pin and the pure electric traction vehicle.

[0019] By adopting the above scheme, the shaft pin one can be moved towards the direction of the supporting shaft when the pure electric traction vehicle deviates from the neutral position, and no matter which direction the electric traction vehicle turns, the power arm of the driving rod can be reduced, the power generation speed of the hand-cranking generator can be accelerated, and the energy consumption of the battery caused by the operation of the heat dissipation fan can be reduced.

[0020] Preferably, the distance between the supporting shaft and the shaft pin one is smaller than the distance between the supporting shaft and the right end of the outer tube.

[0021] By adopting the above scheme, the power arm of the inner rod when the outer tube rotates around the supporting shaft as the rotating shaft is smaller than the resistance arm, so that when the end of the inner rod moves a short distance through the shaft pin one, the outer tube can drive the tooth plate to move a relatively long distance quickly, so that the driving shaft of the hand-cranking generator can be driven under the action of the gear, the power generation function of the hand-cranking generator can be ensured, and the charging of the battery installed on the pure electric traction vehicle can be realized.

[0022] Compared with the prior art, the present application has the following advantages:

[0023] 1. The hand-cranking generator, the driving assembly and the driving rod are arranged, the driving shaft of the hand-cranking generator can be driven to rotate through the driving rod in the process of braking the pure electric traction vehicle, the size difference between the power arm and the resistance arm of the driving rod can be utilized to make the end of the driving rod rotate quickly under the action of a small displacement in the process of braking the pure electric traction vehicle, the effective power generation of the hand-cranking generator can be ensured, the auxiliary power supply of the battery and the heat dissipation fan during power generation of the hand-cranking generator can be realized, the kinetic energy loss in the braking process is reduced, the low-energy dissipation cooling of the motor of the pure electric traction vehicle is realized, and the driving mileage of the pure electric traction vehicle can be ensured.

[0024] 2. The toggle assembly is arranged, the free end of the elastic telescopic rod can be continuously engaged with the gear and drive the gear to rotate under the action of the wedge surface of the free end of the elastic telescopic rod in the process of the positive rotation of the tooth plate around the supporting shaft as the rotating shaft caused by the braking of the pure electric traction vehicle, and the free end of the elastic telescopic rod can be squeezed and contracted by the gear under the action of the wedge surface in the process of the reverse rotation of the tooth plate around the supporting shaft as the rotating shaft caused by the acceleration of the pure electric traction vehicle, so that the driving shaft of the hand-cranking generator is prevented from rotating, the hand-cranking generator does not work when the pure electric traction vehicle accelerates, the hand-cranking generator is in the power generation state in the process of braking, the auxiliary power supply of the battery and the heat dissipation fan can be realized, and the low-energy dissipation cooling of the pure electric traction vehicle by the heat dissipation fan is ensured.

[0025] 3. By setting the adjusting assembly, the power arm of the driving rod can be reduced when the pure electric traction vehicle is in the turning state, and the greater the turning angle, the smaller the power arm of the driving rod, when the pure electric traction vehicle brakes in the turning state and causes the traction plate to approach the traction vehicle, the driving rod can rotate around the support shaft as the rotating shaft, and when the one end of the driving rod rotates a small angle, the other end can also rotate a larger angle at the same time, so as to accelerate the rotation speed of the gear and the driving shaft, thereby improving the power generation efficiency of the hand-cranked generator, and further ensuring the low-energy dissipation cooling of the pure electric traction vehicle by the cooling fan. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of the application;

[0027] Figure 2 It is a connection structure schematic diagram of the hand-cranked generator, the traction plate and the driving assembly of the application;

[0028] Figure 3 It is an enlarged view of part A in the middle of the application; Figure 2

[0029] Figure 4 It is a connection structure schematic diagram of the traction plate and the adjusting assembly of the application;

[0030] Figure 5 It is a connection structure schematic diagram of the pull rod, the connecting rod and the rectangular frame of the application;

[0031] Figure 6 It is an enlarged view of part B in the middle of the application; Figure 5

[0032] Figure 7 It is a state diagram of the gear plate when the pure electric traction vehicle accelerates;

[0033] Figure 8 It is an enlarged view of part C in the middle of the application Figure 7

[0034] Figure 9 It is a state diagram of the gear plate when the pure electric traction vehicle brakes.

[0035] ​​​In the figure: 1, cooling fan; 2, hand generator; 21, drive shaft; 3, pure electric traction vehicle; 4, traction frame; 41, fixed rod; 42, traction plate; 421, strip-shaped port; 43, spring; 44, bolt; 5, drive rod; 51, inner rod; 52, outer tube; 6, drive assembly; 61, U-shaped rod; 62, sliding block; 63, shaft pin one; 64, support shaft; 65, toothed plate; 651, arc-shaped port; 66, gear; 7, adjusting assembly; 71, hanging piece; 712, L-shaped hook; 711, annular plate; 72, pull rod; 73, shaft pin two; 74, collar; 75, connecting rod; 76, rectangular frame; 77, drive block; 771, drive groove; 7711, inner groove; 7712, slot; 78, adjusting block; 781, adjusting rod; 782, adjusting ball; 8, actuating assembly; 81, elastic telescopic rod. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0037] Please refer to Figures 1 to 8 The present application provides a low-energy consumption cooling device for a pure electric traction vehicle, and the technical solutions are as follows:

[0038] Specifically, please refer to Figure 1 A low-energy consumption cooling device for a pure electric traction vehicle 3, comprising a cooling fan 1 and a hand generator 2, the cooling fan 1 and the hand generator 2 are used in cooperation with the pure electric traction vehicle 3 and are both arranged on the pure electric traction vehicle 3, further comprising a traction frame 4, a drive rod 5, a drive assembly 6 and an adjusting assembly 7, the traction frame 4 is arranged on the pure electric traction vehicle 3, the traction frame 4 comprises a fixed rod 41, a traction plate 42, a spring 43 and a bolt 44, the fixed rod 41 is arranged on the pure electric traction vehicle 3, the traction plate 42 is sleeved on the fixed rod 41, the spring 43 is sleeved on the fixed rod 41 and the two ends thereof are connected with the traction plate 42 and the fixed rod 41 respectively, the bolt 44 is arranged through the traction plate 42, and the rigidity of the spring 43 is arranged to increase from the head of the pure electric traction vehicle 3 to the tail direction.

[0039] Under the above setting condition, when the pure electric traction vehicle 3 accelerates or brakes, the traction plate 42 will be stressed, and when the pure electric traction vehicle 3 accelerates, the distance between the traction plate 42 and the pure electric traction vehicle 3 increases, and in this process, the spring 43 is pressed; and when the pure electric traction vehicle 3 brakes, the distance between the traction plate 42 and the pure electric traction vehicle 3 decreases, and in this process, the spring 43 is stretched, and the spring 43 absorbs part of the kinetic energy in the process of deformation to play a buffering effect, avoiding hard collision at the connection between the pure electric traction vehicle 3 and the carriage.

[0040] As an embodiment of the present application, referring to Figure 2 、 Figure 3 and Figure 4 , the driving shaft 21 is arranged on the hand-cranking generator 2, the driving rod 5 is arranged on the hand-cranking generator 2, the driving assembly 6 is arranged on the driving shaft 21 and connected with the traction frame 4 through the driving rod 5, the driving assembly 6 includes the U-shaped rod 61, the sliding block 62, the shaft pin one 63, the supporting shaft 64, the toothed plate 65 and the gear 66, the U-shaped rod 61 is arranged on the traction plate 42, the sliding block 62 is sleeved on the U-shaped rod 61, the shaft pin one 63 is arranged on the sliding block 62, the supporting shaft 64 is arranged on the hand-cranking generator 2, the driving rod 5 includes the inner rod 51 and the outer tube 52, the inner rod 51 and the outer tube 52 are sleeved, one end of the inner rod 51 located outside the outer tube 52 is sleeved with the shaft pin one 63, the outer tube 52 is connected with the supporting shaft 64, the gear 66 is arranged on the driving shaft 21, the toothed plate 65 is arranged at the end of the outer tube 52 and the surface is provided with the arc-shaped opening 651, the inside of the arc-shaped opening 651 is provided with the poking assembly 8, and when the outer tube 52 rotates around the supporting shaft 64 as the rotating shaft, the poking assembly 8 drives the driving shaft 21 to rotate through the gear 66; the distance between the supporting shaft 64 and the shaft pin one 63 is less than the distance between the supporting shaft 64 and the right end of the outer tube 52, the power arm of the outer tube 52 when rotating is less than the resistance arm, so that when the left end of the outer tube 52 rotates around the supporting shaft 64, the moving path of the right end of the outer tube 52 is greater than the left end, achieving the effect of fast rotation of the driving gear 66, thereby being able to accelerate the power generation efficiency of the hand-cranking generator 2, and further ensuring the auxiliary power supply to the heat dissipation fan 1 and the storage battery, and ensuring the low-energy dissipation cooling of the heat dissipation fan 1 to the motor of the pure electric traction vehicle 3.

[0041] When the distance between the traction plate 42 and the pure electric traction vehicle 3 changes, the traction plate 42 drives the U-shaped rod 61 to move, and the U-shaped rod 61 drives the sliding block 62 to move. Since the shaft pin one 63 is arranged on the sliding block 62, and one end of the inner rod 51 is sleeved with the shaft pin one 63, the shaft pin drives the outer tube 52 to move by means of the inner rod 51 in the moving process. Since the outer tube 52 is sleeved with the supporting shaft 64, and the supporting shaft 64 is arranged on the hand-cranking generator 2, the outer tube 52 can rotate around the supporting shaft 64 as the rotating shaft, and can drive the toothed plate 65 to rotate around the supporting shaft 64 in the rotating process, thereby driving the gear 66 to drive the driving shaft 21 to rotate, so that the hand-cranking generator 2 can automatically generate electricity by using the kinetic energy of the carriage in the braking process of the pure electric traction vehicle 3, and auxiliary power supply for the storage battery and the cooling fan 1 is realized. The normal cooling of the cooling fan 1 is effectively ensured, the energy consumption of the storage battery is reduced, and low-energy consumption cooling of the motor of the pure electric traction vehicle 3 is achieved.

[0042] As an embodiment of the present application, referring to Figure 4 、 Figure 5 and Figure 6 , the adjusting assembly 7 is arranged on the traction frame 4, and the adjusting assembly 7 comprises a hanging piece 71, a pull rod 72, a shaft pin two 73, a sleeve ring 74, a connecting rod 75, a rectangular frame 76, a driving block 77 and an adjusting block 78. The hanging piece 71 is arranged on one side of the traction plate 42 and comprises an annular plate 711 and an L-shaped hook 712 connected with each other. A strip-shaped opening 421 is formed in the traction plate 42. The pull rod 72 is arranged through the strip-shaped opening 421 and connected with the sliding block 62. The latch pin 44 is arranged through the annular plate 711. The shaft pin two 73 is arranged on the annular plate 711. The sleeve ring 74 is sleeved on the shaft pin two 73. The connecting rod 75 is arranged on the sleeve ring 74. The rectangular frame 76 is arranged on the connecting rod 75 and sleeved with the pull rod 72. The driving block 77 is arranged in the interior of the rectangular frame 76 and has a driving groove 771 formed on the surface. The adjusting block 78 is arranged on the pull rod 72 and connected with the driving groove 771 in a matched mode. The central axis of the shaft pin two 73 is equal to the distance between the central axis of the latch pin 44 and the pure electric traction vehicle 3.

[0043] The driving groove 771 comprises an inner groove 7711 and a slot 7712. The inner groove 7711 is arranged in the interior of the driving block 77. The slot 7712 is arranged on the surface of the driving block 77 and arranged in communication with the inner groove 7711. The adjusting block 78 comprises an adjusting rod 781 and an adjusting ball 782. The adjusting rod 781 is arranged on the pull rod 72 and arranged through the slot 7712. The adjusting ball 782 is arranged on the adjusting rod 781 and arranged in sliding mode in the interior of the inner groove 7711.

[0044] Under the above setting conditions, when the pure electric traction vehicle 3 deviates from the neutral position, due to the resistance of the carriage, the relative rotation between the annular plate 711 and the pure electric traction vehicle 3 occurs, when the relative rotation occurs, the annular plate 711 can drive the shaft pin two 73 to revolve around the plug pin 44, the shaft pin revolves to drive the sleeve ring 74 to move, the sleeve ring 74 moves to drive the connecting rod 75 to move, the connecting rod 75 moves to drive the rectangular frame 76 to move, the rectangular frame 76 moves to drive the adjusting block 78 to move, in the process of the movement of the adjusting block 78, the slot 7712 can extrude the adjusting ball 782, the adjusting ball 782 is extruded to drive the adjusting rod 781 to move close to the hand-operated generator 2, since the adjusting rod 781 is arranged on the pull rod 72, the adjusting rod 781 can drive the pull rod 72 to move close to the hand-operated generator 2, since the end of the pull rod 72 is connected with the sliding block 62, the sliding block 62 moves along with the pull rod 72 to drive the shaft pin one 63 to move close to the hand-operated generator 2, in the process, the shaft pin one 63 drives the inner rod 51 to move to the inside of the outer tube 52, reduces the distance between the shaft pin one 63 and the support shaft 64, that is, reduces the power arm of the driving rod 5, so that when the pure electric traction vehicle 3 turns and brakes, the short distance movement of the shaft pin one 63 can accelerate the driving speed of the outer tube 52 to the toothed plate 65, so as to accelerate the rotation speed of the gear 66, that is, accelerates the power generation speed of the hand-operated generator 2, thereby reducing the energy consumption of the heat dissipation fan 1 to the storage battery during heat dissipation, and realizing the low-energy consumption heat dissipation and cooling of the pure electric traction vehicle 3.

[0045] As an embodiment of the present application, referring to Figure 7 and Figure 8 , the toggle assembly 8 comprises an elastic telescopic rod 81, the elastic telescopic rod 81 is arranged in the inner ring of the arc-shaped opening 651, the free end of the elastic telescopic rod 81 is engaged with the gear 66, and the free end is arranged in a wedge-shaped surface.

[0046] Under the above setting conditions, when the pure electric traction vehicle 3 brakes, the toothed plate 65 rotates forward around the support shaft 64 through the outer tube 52, the free end of the elastic telescopic rod 81 arranged on the arc-shaped opening 651 can drive the gear 66 to rotate; when the pure electric traction vehicle 3 accelerates, the toothed plate 65 rotates reversely around the support shaft 64 through the outer tube 52, the wedge-shaped surface of the free end of the elastic telescopic rod 81 arranged on the arc-shaped opening 651 is contracted under the extrusion of the gear 66, avoiding driving the gear 66 to rotate, so as to realize the one-way rotation of the driving shaft 21, ensuring the normal power generation of the hand-operated generator 2, that is, realizing the auxiliary power supply to the storage battery and the heat dissipation fan 1, reducing the energy consumption of the heat dissipation fan 1 during the heat dissipation of the motor, and realizing the low-energy consumption heat dissipation and cooling of the motor of the pure electric traction vehicle 3.

[0047] Working principle: in order to make up for the increased energy consumption of the electric motor during the acceleration of the pure electric traction vehicle 3 and the kinetic energy loss during braking, referring to Figure 1 、 Figure 2 and Figure 3 , through the driving assembly 6, the hand-cranked generator 2 can be driven to generate electricity during the braking of the pure electric traction vehicle 3, and the electric energy generated by the hand-cranked generator 2 can be used to assist the work of the storage battery and the cooling fan 1, so as to realize low-energy consumption cooling of the electric motor of the pure electric traction vehicle 3; in order to make up for part of the electric energy lost for maintaining the torque and output power of the electric motor during the turning and braking of the pure electric traction vehicle 3, referring to Figs. and Figs., through the setting of the adjusting assembly 7, the driving arm of the driving rod 5 can be reduced, that is, during the turning and braking of the pure electric traction vehicle 3, the driving shaft 21 on the hand-cranked generator 2 can be quickly rotated by the driving rod 5, so as to speed up the working efficiency of the hand-cranked generator 2, and further realize low-energy consumption cooling of the electric motor of the pure electric traction vehicle 3.

[0048] Specifically: referring to Figure 1 、 Figure 7 and Figure 8 , since the fixed rod 41 is arranged on the pure electric traction vehicle 3, the traction plate 42 is sleeved with the fixed rod 41 and is inserted with the annular plate 711 through the latch 44, and the L-shaped hook 712 is hung with the carriage, due to the large weight of the carriage, during the acceleration of the pure electric traction vehicle 3, the carriage has a lagging effect, so that the traction plate 42 is away from the pure electric traction vehicle 3 under the action of the gravity of the carriage, since the U-shaped rod 61 is arranged on the traction plate 42, during the traction plate 42 moving away from the pure electric traction vehicle 3, the U-shaped rod 61 can be driven to move synchronously, when the U-shaped rod 61 moves, the shaft pin one 63 can be driven to move, when the shaft pin one 63 moves, the inner rod 51 can be driven to move, since the outer tube 52 is sleeved on the inner rod 51, and the support shaft 64 connected with the hand-cranked generator 2 is arranged on the outer tube 52, during the movement of the inner rod 51 following the sliding block 62 through the shaft pin one 63, the outer tube 52 can be driven to rotate around the support shaft 64, and during the rotation of the outer tube 52, the gear plate 65 can be driven to rotate forward, the plurality of elastic expansion rods 81 arranged on the arc-shaped port 651 can be continuously dislocated with the gear 66 under the action of the free end wedge surface, so as to avoid the rotation of the gear 66, so that the hand-cranked generator 2 does not work;

[0049] Referring to Figure 1 、 Figure 7 、 Figure 8 and Figure 9When the pure electric traction vehicle 3 brakes, due to the inertia of the carriage, the L-shaped hook 712 can be pressed to move in the direction of the pure electric traction vehicle 3 through the hitching position, and the connection of the L-shaped hook 712 and the traction plate 42 can be realized due to the insertion of the pin 44 and the traction plate 42 and the annular plate 711, so that the L-shaped hook 712 can be conveniently hitched with the carriage, and when the L-shaped hook 712 is pressed, the pin 44 can press the traction plate 42 to move in the direction of the pure electric traction vehicle 3, so that when the traction plate 42 approaches the pure electric traction vehicle 3, the toothed plate 65 can rotate reversely with the support shaft 64 as the rotation shaft, and in the process of reverse rotation of the toothed plate 65, the free ends of the plurality of elastic telescopic rods 81 arranged on the arc-shaped port 651 can constantly engage with the gear 66, so as to drive the gear 66 to rotate, that is, the driving shaft 21 can be rotated in one direction in the process of braking of the pure electric traction vehicle 3, so as to ensure the normal work of the hand-cranking generator 2, and then auxiliary power supply to the storage battery and the cooling fan 1 is realized, and low energy consumption cooling of the motor of the pure electric traction vehicle 3 is achieved.

[0050] With reference to Figure 1 , Figure 4 , Figure 5 and Figure 6 In the process of turning (deviating from the straight driving direction) of the pure electric traction vehicle 3, due to the limitation of the carriage, the relative rotation between the annular plate 711 and the pure electric traction vehicle 3 will occur, and in the process of relative rotation, the annular plate 711 can drive the sleeve ring 74 to revolve around the pin 44 through the shaft pin two 73, the sleeve ring 74 can drive the connecting rod 75 to move in the process of revolution, the connecting rod 75 can drive the rectangular frame 76 to move in the process of movement, the rectangular frame 76 can drive the driving block 77 to move in the process of movement, and the driving block 77 can press the adjusting ball 782 under the action of the inner groove 7711 and the slot 7712 in the process of movement, and since the adjusting rod 781 is arranged between the adjusting ball 782 and the pull rod 72, when the shaft pin two 73 moves away from the initial position, the pull rod 72 can be driven to approach the hand-cranking generator 2, and at this time, the pull rod 72 can drive the shaft pin one 63 to approach the hand-cranking generator 2 through the sliding block 62, and the shaft pin one 63 can drive the inner rod 51 to move into the inner part of the outer tube 52, so as to reduce the driving force arm of the driving rod 5, thereby further improving the rotating speed of the driving shaft 21 in the process of braking of the pure electric traction vehicle 3, speeding up the power generation efficiency of the hand-cranking generator 2, and further achieving the effect of low energy consumption cooling of the motor of the pure electric traction vehicle 3.

[0051] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and modifications can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A low energy consumption cooling device for pure electric tractor, comprising a cooling fan (1) and a hand generator (2), the cooling fan (1) and the hand generator (2) are matched with the pure electric tractor (3) and are arranged on the pure electric tractor (3), characterized in that: It also includes a traction frame (4), a drive rod (5), a drive assembly (6) and an adjusting assembly (7), the traction frame (4) is arranged on the pure electric tractor (3), the hand-cranked generator (2) is provided with a drive shaft (21), the drive rod (5) is arranged on the hand-cranked generator (2), the drive assembly (6) is arranged on the drive shaft (21) and connected with the traction frame (4) through the drive rod (5), when the pure electric tractor (3) is changing speed, the drive assembly (6) drives the drive shaft (21) to rotate in one direction through the drive rod (5), the adjusting assembly (7) is arranged on the traction frame (4), when the pure electric tractor (3) is turning, the adjusting assembly (7) reduces the power arm of the drive rod (5) through the traction frame (4); The traction frame (4) includes a fixed rod (41), a traction plate (42), a spring (43) and a bolt (44), the fixed rod (41) is arranged on the pure electric tractor (3), the traction plate (42) is sleeved on the fixed rod (41), the spring (43) is sleeved on the fixed rod (41) and connected with the traction plate (42) and the fixed rod (41) at both ends respectively, the bolt (44) is arranged through the traction plate (42), the stiffness of the spring (43) is arranged in the direction from the front of the pure electric tractor (3) to the tail increasing; The drive assembly (6) includes a U-shaped rod (61), a sliding block (62), a shaft pin (63), a support shaft (64), a toothed plate (65) and a gear (66), the U-shaped rod (61) is arranged on the traction plate (42), the sliding block (62) is sleeved on the U-shaped rod (61), the shaft pin (63) is arranged on the sliding block (62), the support shaft (64) is arranged on the hand-cranked generator (2), the drive rod (5) includes an inner rod (51) and an outer tube (52), the inner rod (51) and the outer tube (52) are sleeved, one end of the inner rod (51) located outside the outer tube (52) is sleeved with the shaft pin (63), the outer tube (52) is connected with the support shaft (64), the gear (66) is arranged on the drive shaft (21), the toothed plate (65) is arranged at the end of the outer tube (52) and the surface is provided with an arc-shaped opening (651), the inside of the arc-shaped opening (651) is provided with a dialing assembly (8), when the outer tube (52) rotates around the support shaft (64) as the rotating shaft, the dialing assembly (8) drives the drive shaft (21) to rotate through the gear (66); The adjusting assembly (7) comprises a hanging piece (71), a pull rod (72), a shaft pin two (73), a collar (74), a connecting rod (75), a rectangular frame (76), a driving block (77) and an adjusting block (78), the hanging piece (71) is arranged on one side of the traction plate (42) and comprises a connected annular plate (711) and an L-shaped hook (712), a strip-shaped opening (421) is formed in the traction plate (42), the pull rod (72) is arranged through the strip-shaped opening (421) and connected with the sliding block (62), the plug pin (44) is arranged through the annular plate (711), the shaft pin two (73) is arranged on the annular plate (711), the collar (74) is sleeved on the shaft pin two (73), the connecting rod (75) is arranged on the collar (74), the rectangular frame (76) is arranged on the connecting rod (75) and sleeved with the pull rod (72), the driving block (77) is arranged in the interior of the rectangular frame (76) and the surface of which is provided with a driving groove (771), the adjusting block (78) is arranged on the pull rod (72) and connected with the driving groove (771), when the annular plate (711) rotates relative to the pure electric traction vehicle (3), the adjusting block (78) reduces the length of the inner rod (51) outside the outer tube (52) through the driving groove (771).

2. A low energy consumption cooling device for an all-electric tow vehicle according to claim 1, characterized in that: The toggle assembly (8) comprises an elastic telescopic rod (81), the elastic telescopic rod (81) is arranged in the inner ring of the arc-shaped opening (651), the free end of the elastic telescopic rod (81) is engaged with the gear (66), and the free end is arranged in a wedge shape.

3. A low energy consumption cooling device for an all-electric tow vehicle according to claim 1, wherein: The driving groove (771) comprises an inner groove (7711) and a slot (7712), the inner groove (7711) is arranged in the interior of the driving block (77), the slot (7712) is arranged on the surface of the driving block (77) and is arranged in communication with the slot (7712), the adjusting block (78) comprises an adjusting rod (781) and an adjusting ball (782), the adjusting rod (781) is arranged on the pull rod (72) and arranged through the slot (7712), and the adjusting ball (782) is arranged on the adjusting rod (781) and arranged in sliding in the interior of the inner groove (7711).

4. A low energy consumption cooling device for an all-electric tow vehicle according to claim 1, wherein: The distance between the central axis of the shaft pin two (73) and the pure electric traction vehicle (3) is equal to the distance between the central axis of the plug pin (44) and the pure electric traction vehicle (3).

5. A low energy consumption cooling device for an all-electric tow vehicle according to claim 1, wherein: The distance between the support shaft (64) and the shaft pin one (63) is less than the distance between the support shaft (64) and the right end of the outer tube (52).

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