阅读说明：本技术 一种多样化过流电路智能保护装置 (Diversified overcurrent circuit intelligent protection device ) 是由 王英艳 于 2021-01-08 设计创作，主要内容包括：本发明涉及过流电路保护装置相关领域,尤其是一种多样化过流电路智能保护装置,包括机体,所述机体后侧端壁内开口向后的设有移动腔,所述移动腔内设有用于给所述机体提供动力支持的动力装置,所述动力装置包括所述移动腔左右端壁之间转动连接设有的第一电机轴,所述第一电机轴上固定连接的设有车轮,所述车轮后端与地面接触,使得所述机体能够在地面上行驶,该设备可以在过流电路情况情况较轻微时往动力电路中接入一个电阻,使得动力电路负载增多而分流,从而起到电路保护的作用；当电流过流情况较为严重时,电路中的继电器断开,使得汽车顿时失去动力源,该装置可采用备用电源作为动力,从而保证车辆的正常行驶,避免交通事故的发生。(The invention relates to the related field of overcurrent circuit protection devices, in particular to a diversified overcurrent circuit intelligent protection device which comprises a machine body, wherein a moving cavity is arranged in the rear end wall of the machine body, the opening of the moving cavity is backward, a power device for providing power support for the machine body is arranged in the moving cavity, the power device comprises a first motor shaft, a wheel is fixedly connected to the first motor shaft, the rear end of the wheel is in contact with the ground, so that the machine body can run on the ground, a resistor can be connected into a power circuit when the overcurrent circuit condition is slight, the load of the power circuit is increased and shunted, and the circuit protection effect is achieved; when the current overcurrent condition is serious, a relay in the circuit is switched off, so that a power source is lost when an automobile is in a pause, and the device can adopt a standby power supply as power, so that the normal running of the automobile is ensured, and traffic accidents are avoided.)

1. The utility model provides a diversified overcurrent circuit intelligent protection device, includes the organism, its characterized in that: a moving cavity is arranged in the rear end wall of the machine body, the opening of the moving cavity is backward, a power device for providing power support for the machine body is arranged in the moving cavity, the power device comprises a first motor shaft which is rotatably connected and arranged between the left end wall and the right end wall of the moving cavity, wheels are fixedly connected on the first motor shaft, the rear ends of the wheels are in contact with the ground, so that the machine body can run on the ground, a first transmission cavity is arranged on the right side of the moving cavity, a first motor is fixedly connected between the front end wall and the rear end wall of the first transmission cavity, a protection device for protecting the first motor when the first motor is in overcurrent is arranged in the first transmission cavity, the protection device comprises electrodes fixedly connected and arranged on the upper end wall and the lower end wall of the first transmission cavity, a first sliding cavity is arranged in the right end wall of the first transmission cavity in a leftward opening, and a threaded shaft is arranged in the first sliding cavity in a, the left end of the threaded shaft is fixedly connected with a resistor in the first transmission cavity, when the current in the first motor is overlarge, the protective device can control the resistor to move leftwards and is communicated with the upper electrode and the lower electrode, so that the resistor is connected into a circuit in the first motor, and the overcurrent protection function is realized, a second transmission cavity is arranged above the first transmission cavity, a standby device for supporting the machine body to continue running when a relay in the first motor is disconnected is arranged in the second transmission cavity, the V-shaped belt is arranged in the second transmission cavity in a transmission connection mode, the standby device can control the transmission ratio of the V-shaped belt, so that the machine body keeps constant running speed, and the safety and the riding comfort of passengers are kept, a ventilation cavity is arranged on the lower side of the first transmission cavity, and a cooling device for ventilating the first motor is arranged in the ventilation cavity, the heat sink includes the fan that the ventilation intracavity was equipped with, the heat sink control the fan rotates, fan suction air leads to first transmission chamber makes first motor cools off fast, finally realizes a diversified circuit intelligent protection device that overflows of this design.

2. A diversified over-current circuit intelligent protection device as claimed in claim 1, characterized in that: the power device comprises a first motor shaft which is arranged between the first transmission cavity and the moving cavity in a rotating connection mode, a first bevel gear is fixedly connected in the first transmission cavity, the first motor shaft on the right side of the first bevel gear is in power connection with the left end of the first motor, and the first motor is connected with the electrodes on the upper side and the lower side through conducting wires.

3. A diversified over-current circuit intelligent protection device as claimed in claim 1, characterized in that: the protection device comprises a third transmission cavity arranged at the lower side of the first transmission cavity, a first rotating shaft is arranged between the third transmission cavity and the first transmission cavity in a rotating and sliding connection mode, a spline cavity is arranged in the end wall of the lower side of the first rotating shaft with a downward opening, a first magnet is fixedly connected to the end wall of the upper side of the spline cavity, a second rotating shaft is arranged on the end wall of the lower side of the third transmission cavity in a rotating connection mode, the upper end of the second rotating shaft is in spline connection in the spline cavity, a first electromagnetic switch is fixedly connected to the end wall of the upper side of the second rotating shaft, a first spring is fixedly connected between the end wall of the upper side of the second rotating shaft and the top wall of the spline cavity, a second bevel gear capable of being meshed with the first bevel gear is fixedly connected to the first rotating shaft in the first transmission cavity, and a fourth transmission cavity is arranged at the right side of the third transmission cavity, the fourth transmission chamber with rotate between the first transmission chamber and be equipped with the third pivot of connection, the third pivot is in fourth transmission intracavity fixed connection be equipped with first belt pulley, first belt pulley with there is first belt drive on the second belt pulley to connect, the third pivot is in first transmission intracavity fixed connection be equipped with third bevel gear, sliding connection's in the first sliding chamber be equipped with the slider, fixed connection be equipped with on the slider the threaded spindle, the threaded spindle be in first transmission intracavity threaded connection be equipped with third bevel gear meshed fourth bevel gear, threaded spindle left end fixed connection be equipped with the resistance cover, fixed connection be equipped with on the resistance cover resistance.

4. A diversified over-current circuit intelligent protection device as claimed in claim 1, characterized in that: the standby device comprises a fourth rotating shaft which is rotatably connected between the first transmission cavity and the second transmission cavity, a second sliding cavity is arranged in the lower side end wall of the fourth rotating shaft in a downward opening manner, a second motor shaft is fixedly connected to the upper side end wall of the second sliding cavity, a fifth rotating shaft is arranged in the second sliding cavity in a spline connection manner, a second magnet is fixedly connected to the upper side end wall of the fifth rotating shaft, a second spring is fixedly connected between the upper side end wall of the fifth rotating shaft and the top wall of the second sliding cavity, a fifth bevel gear which can be meshed with the first bevel gear is fixedly connected to the lower end of the fifth rotating shaft, a first V belt wheel is fixedly connected to the fourth rotating shaft in the second transmission cavity, a third sliding cavity is arranged in the second transmission cavity in a downward opening manner, and a sixth rotating shaft is arranged in the third sliding cavity in a sliding and rotating manner, the upper end wall of the sixth rotating shaft is fixedly connected with a third magnet, the upper end wall of the third sliding cavity is rotatably connected with a first spring seat, a third spring is fixedly connected between the first spring seat and the sixth rotating shaft, the lower end of the sixth rotating shaft is fixedly connected with a second V belt wheel, the bottom wall of the seventh rotating shaft is fixedly connected with a second motor, the upper end of the second motor is connected with a second motor shaft in a power mode, the second motor shaft is fixedly connected with a third V belt wheel, a fourth sliding cavity is arranged in the upper end wall of the second transmission cavity with a downward opening, the upper end wall of the fourth sliding cavity is rotatably connected with a second spring seat, a fourth spring is fixedly connected between the second spring seat and the seventh rotating shaft, the lower end of the seventh rotating shaft is fixedly connected with a fourth V belt wheel, and the fourth V belt wheel, The third V belt wheel, the second V belt wheel and the first V belt wheel are in V-belt transmission connection, and a speed sensor is fixedly connected to the left end wall of the moving cavity.

5. A diversified over-current circuit intelligent protection device as claimed in claim 1, characterized in that: the cooling device comprises a fifth transmission cavity arranged at the rear side of the ventilation cavity, an eighth rotating shaft is arranged between the fifth transmission cavity and the ventilation cavity in a rotating connection mode, a worm is fixedly connected in the ventilation cavity through the eighth rotating shaft, a third belt pulley is fixedly connected in the fifth transmission cavity through the eighth rotating shaft, a sixth transmission cavity is arranged at the rear side of the first transmission cavity, a ninth rotating shaft is arranged between the sixth transmission cavity and the first transmission cavity in a rotating connection mode, a sixth bevel gear capable of being meshed with the fifth bevel gear and the second bevel gear is fixedly connected in the first transmission cavity through the ninth rotating shaft, a fourth belt pulley is fixedly connected in the sixth transmission cavity through the ninth rotating shaft, a second belt is arranged on the fourth belt pulley and the third belt pulley in a driving connection mode, a tenth rotating shaft is arranged on the end wall of the right side of the ventilation cavity in a rotating connection mode, the fan is characterized in that a shaft sleeve is fixedly connected to the tenth rotating shaft, a plurality of fans are fixedly connected to the shaft sleeve, a worm wheel meshed with the worm is fixedly connected to the tenth rotating shaft at the left end of the shaft sleeve, a first air passage is fixedly connected between the ventilation cavity and the lower side end wall of the first transmission cavity, a first ventilation valve is fixedly connected between the ventilation cavity and the right side end wall of the moving cavity, a second ventilation valve is fixedly connected in the right side end wall of the moving cavity, and a second air passage is fixedly connected between the second ventilation valve and the upper side end wall of the first transmission cavity.

Technical Field

The invention relates to the related field of overcurrent circuit protection devices, in particular to a diversified overcurrent circuit intelligent protection device.

Background

The overcurrent protector is used for current overload protection, when it is set, the relay in the protector can be automatically released, and the protector can be withdrawn from protection state, so that it can effectively prevent error operation of motor in the set state, and can be extensively used for protecting and monitoring three-phase motor and other electric appliances in the industries of machinery, metallurgy, building material, chemical industry and textile industry, etc.

The traditional overcurrent protection device for the electric automobile can only control the circuit state through a single relay, has simple function and poor protection effect, and currently lacks a protection device adopting various overcurrent circuit protection methods, namely a diversified intelligent overcurrent circuit protection device.

Disclosure of Invention

The invention aims to provide a diversified intelligent overcurrent circuit protection device which can overcome the defects in the prior art, so that the practicability of equipment is improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: a diversified intelligent protection device for an overcurrent circuit comprises a machine body, a moving cavity is arranged in the rear end wall of the machine body, the moving cavity is provided with a power device for providing power support for the machine body, the power device comprises a first motor shaft which is rotatably connected and arranged between the left end wall and the right end wall of the moving cavity, wheels are fixedly connected to the first motor shaft, the rear end of each wheel is in contact with the ground, so that the machine body can run on the ground, the right side of the moving cavity is provided with a first transmission cavity, a first motor is fixedly connected and arranged between the front end wall and the rear end wall of the first transmission cavity, a protection device for protecting the first motor when the first motor is in overcurrent is arranged in the first transmission cavity, the protection device comprises electrodes fixedly connected and arranged on the upper end wall and the lower end wall of the first transmission cavity, a first sliding cavity is arranged in the right end wall of the first transmission cavity, and is provided with a left opening, the first sliding cavity is internally provided with a threaded shaft which can slide left and right, the left end of the threaded shaft is fixedly connected with a resistor in the first transmission cavity, when the current in the first motor is overlarge, the protective device can control the resistor to move left and is communicated with an upper electrode and a lower electrode, so that the resistor is connected into a circuit in the first motor, and the overcurrent protection function is realized, a second transmission cavity is arranged above the first transmission cavity, a standby device for supporting the machine body to continue to run when a relay in the first motor is disconnected is arranged in the second transmission cavity, the V belt is arranged in the second transmission cavity in a transmission connection way, the standby device can control the transmission ratio of the V belt, so that the machine body can keep constant running speed, the safety and comfortable riding of passengers, and a ventilation cavity is arranged at the lower side of the first transmission cavity, the ventilation intracavity is equipped with and is used for the heat sink of first motor ventilation, the heat sink includes the fan that the ventilation intracavity was equipped with, the heat sink control the fan rotates, the fan suction air accesss to first transmission chamber makes first motor cools off fast, finally realizes a diversified circuit intelligent protection device that overflows of this design.

Furthermore, the power device comprises a first motor shaft which is arranged between the first transmission cavity and the moving cavity in a rotating connection mode, a first bevel gear is fixedly connected to the first motor shaft in the first transmission cavity, the first motor shaft on the right side of the first bevel gear is in power connection with the left end of the first motor, and the first motor is connected with the electrodes on the upper side and the lower side through conducting wires.

Further, the protection device comprises a third transmission cavity arranged at the lower side of the first transmission cavity, a first rotating shaft is arranged between the third transmission cavity and the first transmission cavity in a rotating and sliding connection manner, a spline cavity is arranged in the end wall at the lower side of the first rotating shaft with a downward opening, a first magnet is fixedly connected to the end wall at the upper side of the spline cavity, a second rotating shaft is arranged in the end wall at the lower side of the third transmission cavity in a rotating connection manner, the upper end of the second rotating shaft is in spline connection with the end wall at the inner side of the spline cavity, a first electromagnetic switch is fixedly connected to the end wall at the upper side of the second rotating shaft, a first spring is fixedly connected between the end wall at the upper side of the second rotating shaft and the top wall of the spline cavity, a second bevel gear capable of being meshed with the first bevel gear is fixedly connected to the first rotating shaft in the first transmission cavity, and a fourth transmission cavity is arranged at the right, the fourth transmission chamber with rotate between the first transmission chamber and be equipped with the third pivot of connection, the third pivot is in fourth transmission intracavity fixed connection be equipped with first belt pulley, first belt pulley with there is first belt drive on the second belt pulley to connect, the third pivot is in first transmission intracavity fixed connection be equipped with third bevel gear, sliding connection's in the first sliding chamber be equipped with the slider, fixed connection be equipped with on the slider the threaded spindle, the threaded spindle be in first transmission intracavity threaded connection be equipped with third bevel gear meshed fourth bevel gear, threaded spindle left end fixed connection be equipped with the resistance cover, fixed connection be equipped with on the resistance cover resistance.

Further, the standby device comprises a fourth rotating shaft which is rotatably connected between the first transmission cavity and the second transmission cavity, a second sliding cavity is arranged in the lower side end wall of the fourth rotating shaft in a downward opening manner, a second motor shaft is fixedly connected to the upper side end wall of the second sliding cavity, a fifth rotating shaft is arranged in the second sliding cavity in a spline connection manner, a second magnet is fixedly connected to the upper side end wall of the fifth rotating shaft, a second spring is fixedly connected between the upper side end wall of the fifth rotating shaft and the top wall of the second sliding cavity, a fifth bevel gear which can be meshed with the first bevel gear is fixedly connected to the lower end of the fifth rotating shaft, a first V belt wheel is fixedly connected to the fourth rotating shaft in the second transmission cavity, a third sliding cavity is arranged in the second transmission cavity in a downward opening manner, and a sixth rotating shaft is arranged in the third sliding cavity in a sliding and rotating manner, the upper end wall of the sixth rotating shaft is fixedly connected with a third magnet, the upper end wall of the third sliding cavity is rotatably connected with a first spring seat, a third spring is fixedly connected between the first spring seat and the sixth rotating shaft, the lower end of the sixth rotating shaft is fixedly connected with a second V belt wheel, the bottom wall of the seventh rotating shaft is fixedly connected with a second motor, the upper end of the second motor is connected with a second motor shaft in a power mode, the second motor shaft is fixedly connected with a third V belt wheel, a fourth sliding cavity is arranged in the upper end wall of the second transmission cavity with a downward opening, the upper end wall of the fourth sliding cavity is rotatably connected with a second spring seat, a fourth spring is fixedly connected between the second spring seat and the seventh rotating shaft, the lower end of the seventh rotating shaft is fixedly connected with a fourth V belt wheel, and the fourth V belt wheel, The third V belt wheel, the second V belt wheel and the first V belt wheel are in V-belt transmission connection, and a speed sensor is fixedly connected to the left end wall of the moving cavity.

Furthermore, the cooling device comprises a fifth transmission cavity arranged at the rear side of the ventilation cavity, an eighth rotating shaft is arranged between the fifth transmission cavity and the ventilation cavity in a rotating connection manner, a worm is fixedly connected with the eighth rotating shaft in the ventilation cavity, a third belt pulley is fixedly connected with the eighth rotating shaft in the fifth transmission cavity, a sixth transmission cavity is arranged at the rear side of the first transmission cavity, a ninth rotating shaft is arranged between the sixth transmission cavity and the first transmission cavity in a rotating connection manner, a sixth bevel gear capable of being meshed with the fifth bevel gear and the second bevel gear is fixedly connected with the ninth rotating shaft in the first transmission cavity, a fourth belt pulley is fixedly connected with the sixth transmission cavity, a second belt is arranged on the fourth belt pulley and the third belt pulley in a rotating connection manner, and a tenth rotating shaft is arranged on the right end wall of the ventilation cavity in a rotating connection manner, the fan is characterized in that a shaft sleeve is fixedly connected to the tenth rotating shaft, a plurality of fans are fixedly connected to the shaft sleeve, a worm wheel meshed with the worm is fixedly connected to the tenth rotating shaft at the left end of the shaft sleeve, a first air passage is fixedly connected between the ventilation cavity and the lower side end wall of the first transmission cavity, a first ventilation valve is fixedly connected between the ventilation cavity and the right side end wall of the moving cavity, a second ventilation valve is fixedly connected in the right side end wall of the moving cavity, and a second air passage is fixedly connected between the second ventilation valve and the upper side end wall of the first transmission cavity.

The invention has the beneficial effects that: a diversified intelligent protection device for an overcurrent circuit can access a resistor into a power circuit when the condition of the overcurrent circuit is slight, so that the load of the power circuit is increased and shunted, and the circuit protection effect is achieved; when the current overcurrent condition is serious, a relay in the circuit is switched off, so that a power source of an automobile is lost during the pause, and the device can adopt a standby power supply as power, thereby ensuring the normal running of the automobile and avoiding the occurrence of traffic accidents; the air can be introduced into the power cavity when the circuit is in overcurrent, so that the motor is rapidly cooled, and the motor is prevented from being burnt out due to overcurrent.

Drawings

For ease of illustration, the invention is described in detail by the following specific examples and figures.

FIG. 1 is a schematic diagram of an overall structure of a diversified intelligent protection device for an over-current circuit according to the present invention;

FIG. 2 is an enlarged view of the structure at "A" in FIG. 1;

FIG. 3 is an enlarged view of the structure at "B" in FIG. 1;

FIG. 4 is a schematic view of the structure in the direction "C-C" of FIG. 1;

fig. 5 is an enlarged schematic view of the structure at "D" of fig. 4.

Detailed Description

The invention will now be described in detail with reference to fig. 1 to 5, for the sake of convenience of description, the following orientations are now defined: the up, down, left, right, and front-back directions described below correspond to the up, down, left, right, and front-back directions in the projection relationship of fig. 1 itself.

The invention relates to a diversified intelligent protection device for an overcurrent circuit, which is mainly applied to overcurrent circuit protection, and the invention is further explained by combining the attached drawings of the invention.

The invention discloses a diversified overcurrent circuit intelligent protection device, which comprises a machine body 10, wherein a moving cavity 11 is arranged in the rear end wall of the machine body 10, the moving cavity 11 is provided with a power device 991 for providing power support for the machine body 10, the power device 991 comprises a first motor shaft 14 which is rotatably connected and arranged between the left end wall and the right end wall of the moving cavity 11, wheels 12 are fixedly connected on the first motor shaft 14, the rear ends of the wheels 12 are in contact with the ground, so that the machine body 10 can run on the ground, a first transmission cavity 42 is arranged on the right side of the moving cavity 11, a first motor 21 is fixedly connected and arranged between the front end wall and the rear end wall of the first transmission cavity 42, a protection device 992 for protecting the first motor 21 when the first motor 21 is in overcurrent is arranged in the first transmission cavity 42, and the protection device 992 comprises an electrode 22 which is fixedly connected and arranged on the upper end wall and the lower end wall of the first transmission cavity 42, a first sliding cavity 26 is arranged in the left opening of the right end wall of the first transmission cavity 42, a threaded shaft 28 is arranged in the first sliding cavity 26 and can slide left and right, a resistor 23 is fixedly connected to the left end of the threaded shaft 28 in the first transmission cavity 42, when the current in the first motor 21 is too large, the resistor 23 can be controlled by the protection device 992 to move left and be communicated with the upper and lower electrodes 22, so that the resistor 23 is connected to the circuit in the first motor 21, the overcurrent protection function is realized, a second transmission cavity 17 is arranged above the first transmission cavity 42, a standby device 993 used for supporting the machine body 10 to continue to run when the relay in the first motor 21 is disconnected is arranged in the second transmission cavity 17, the standby device 993 comprises a V-shaped belt 60 which is arranged in transmission connection in the second transmission cavity 17, and the standby device 993 can control the transmission ratio of the V-shaped belt 60, the machine body 10 is enabled to keep constant running speed, the safety and the riding comfort of passengers are kept, a ventilation cavity 53 is arranged on the lower side of the first transmission cavity 42, a cooling device 994 used for ventilating the first motor 21 is arranged in the ventilation cavity 53, the cooling device 994 comprises a fan 58 arranged in the ventilation cavity 53, the cooling device 994 controls the fan 58 to rotate, the fan 58 sucks air and leads to the first transmission cavity 42, the first motor 21 is enabled to be cooled rapidly, and finally the diversified intelligent protection device for the overcurrent circuit is achieved.

Advantageously, the power device 991 comprises a first motor shaft 14 rotatably connected between the first transmission cavity 42 and the moving cavity 11, the first motor shaft 14 is fixedly connected in the first transmission cavity 42 and is provided with a first bevel gear 19, the first motor shaft 14 on the right side of the first bevel gear 19 is in power connection with the left end of the first motor 21, and the first motor 21 is connected with the electrodes 22 on the upper and lower sides through conducting wires.

Beneficially, the protection device 992 comprises a third transmission cavity 82 arranged at the lower side of the first transmission cavity 42, a first rotating shaft 40 is arranged between the third transmission cavity 82 and the first transmission cavity 42 in a rotating and sliding connection manner, a spline cavity 38 is arranged in the lower side end wall of the first rotating shaft 40 with a downward opening, a first magnet 37 is fixedly connected to the upper side end wall of the spline cavity 38, a second rotating shaft 35 is arranged in the lower side end wall of the third transmission cavity 82 in a rotating connection manner, the upper end of the second rotating shaft 35 is in a spline connection with the spline cavity 38, a first electromagnetic switch 36 is fixedly connected to the upper side end wall of the second rotating shaft 35, a first spring 39 is fixedly connected between the upper side end wall of the second rotating shaft 35 and the top wall of the spline cavity 38, a second bevel gear 41 capable of meshing with the first bevel gear 19 is fixedly connected to the first rotating shaft 40 in the first transmission cavity 42, a fourth transmission cavity 31 is arranged at the right side of the third transmission cavity 82, a third rotating shaft 30 is arranged between the fourth transmission cavity 31 and the first transmission cavity 42 in a rotating connection way, the third rotating shaft 30 is fixedly connected in the fourth transmission cavity 31 and is provided with a first belt pulley 32, the first belt pulley 32 and the second belt pulley 34 are in transmission connection through a first belt 33, the third rotating shaft 30 is fixedly connected in the first transmission cavity 42 and is provided with a third bevel gear 29, a sliding block 27 is arranged in the first sliding cavity 26 in a sliding connection manner, the sliding block 27 is fixedly connected with the threaded shaft 28, the threaded shaft 28 is internally threaded in the first transmission chamber 42 with a fourth bevel gear 25 meshing with the third bevel gear 29, the left end of the threaded shaft 28 is fixedly connected with a resistor sleeve 24, and the resistor 23 is fixedly connected to the resistor sleeve 24.

Advantageously, the backup device 993 comprises a fourth rotating shaft 80 rotatably connected between the first transmission chamber 42 and the second transmission chamber 17, a second sliding chamber 79 is provided with a downward opening in the lower end wall of the fourth rotating shaft 80, a second motor shaft 75 is provided fixedly connected to the upper end wall of the second sliding chamber 79, a fifth rotating shaft 43 is provided in the second sliding chamber 79 in a spline connection manner, a second magnet 77 is provided fixedly connected to the upper end wall of the fifth rotating shaft 43, a second spring 78 is provided fixedly connected between the upper end wall of the fifth rotating shaft 43 and the top wall of the second sliding chamber 79, a fifth bevel gear 20 capable of meshing with the first bevel gear 19 is provided fixedly connected to the lower end of the fifth rotating shaft 43, a first V-belt pulley 81 is provided fixedly connected to the fourth rotating shaft 80 in the second transmission chamber 17, a third sliding chamber 64 is provided with a downward opening in the upper end wall of the second transmission chamber 17, a sixth rotating shaft 62 is arranged in the third sliding cavity 64 in a sliding and rotating manner, a third magnet 63 is fixedly connected to the upper side end wall of the sixth rotating shaft 62, a first spring seat 66 is arranged in the upper side end wall of the third sliding cavity 64 in a rotating manner, a third spring 67 is fixedly connected between the first spring seat 66 and the sixth rotating shaft 62, a second V-shaped belt pulley 61 is fixedly connected to the lower end of the sixth rotating shaft 62, a second motor 74 is fixedly connected to the bottom wall of the seventh rotating shaft 71, a second motor shaft 75 is dynamically connected to the upper end of the second motor 74, a third V-shaped belt pulley 73 is fixedly connected to the second motor shaft 75, a fourth sliding cavity 69 is arranged in the upper side end wall of the second transmission cavity 17 with a downward opening, a second spring seat 68 is rotatably connected to the upper side end wall of the fourth sliding cavity 69, and a fourth spring 70 is fixedly connected between the second spring seat 68 and the seventh rotating shaft 71, the lower end of the seventh rotating shaft 71 is fixedly connected with a fourth V-belt pulley 72, the third V-belt pulley 73, the second V-belt pulley 61 and the first V-belt pulley 81 are in transmission connection with a V-belt 60, and the left end wall of the moving cavity 11 is fixedly connected with a speed sensor 13.

Advantageously, the cooling device 994 comprises a fifth transmission cavity 51 disposed at the rear side of the ventilation cavity 53, an eighth rotation shaft 49 rotatably connected between the fifth transmission cavity 51 and the ventilation cavity 53, a worm 52 fixedly connected between the eighth rotation shaft 49 and the ventilation cavity 53, a third belt pulley 50 fixedly connected between the eighth rotation shaft 49 and the fifth transmission cavity 51, a sixth transmission cavity 46 disposed at the rear side of the first transmission cavity 42, a ninth rotation shaft 47 rotatably connected between the sixth transmission cavity 46 and the first transmission cavity 42, a sixth bevel gear 44 capable of meshing with the fifth bevel gear 20 and the second bevel gear 41 fixedly connected to the ninth rotation shaft 47 in the sixth transmission cavity 46, a fourth belt pulley 45 fixedly connected to the fourth shaft pulley 45 and the third belt pulley 50, the right end wall of the ventilation cavity 53 is rotatably connected and provided with a tenth rotating shaft 57, the tenth rotating shaft 57 is fixedly connected and provided with a shaft sleeve 56, the shaft sleeve 56 is fixedly connected and provided with a plurality of fans 58, the tenth rotating shaft 57 at the left end of the shaft sleeve 56 is fixedly connected and provided with a worm wheel 55 meshed with the worm 52, the ventilation cavity 53 is fixedly connected and provided with a first air passage 59 with the lower end wall of the first transmission cavity 42, the ventilation cavity 53 is fixedly connected and provided with a first vent valve 54 with the right end wall of the moving cavity 11, the right end wall of the moving cavity 11 is fixedly connected and provided with a second vent valve 15, and the second vent valve 15 is fixedly connected and provided with a second air passage 16 with the upper end wall of the first transmission cavity 42.

The following describes in detail the usage steps of a diversified intelligent protection device for an overcurrent circuit in the present disclosure with reference to fig. 1 to 5:

at the beginning, the first motor 21 is started, the first motor 21 drives the first motor shaft 14 to rotate, the first motor shaft 14 drives the wheel 12 to rotate, and the wheel 12 drives the machine body 10 to run on the ground.

When the first motor 21 is overcurrent and the relay still continues to work, the first electromagnetic switch 36 is turned on, the first electromagnetic switch 36 repels the first magnet 37 and drives the first magnet 37 to move upward, the first magnet 37 drives the first rotating shaft 40 to slide upward, the first rotating shaft 40 drives the second bevel gear 41 to move upward and engage with the first bevel gear 19, the first motor shaft 14 drives the first bevel gear 19 to rotate, the first bevel gear 19 drives the second bevel gear 41 to rotate, the second bevel gear 41 drives the first rotating shaft 40 to rotate, the first rotating shaft 40 drives the second rotating shaft 35 to rotate, the second rotating shaft 35 drives the second belt pulley 34 to rotate, the second belt pulley 34 drives the first belt 33 to transmit, and the first belt 33 drives the first belt pulley 32 to rotate, the first belt pulley 32 drives the third rotating shaft 30 to rotate, the third rotating shaft 30 drives the third bevel gear 29 to rotate, the third bevel gear 29 drives the fourth bevel gear 25 to rotate, the fourth bevel gear 25 drives the threaded shaft 28 to move leftward, the threaded shaft 28 drives the resistor sleeve 24 to move leftward, the resistor sleeve 24 drives the resistor 23 to move leftward, the upper end and the lower end of the resistor 23 are in contact with the electrode 22, so that the electrode 22 is connected to a circuit in the first motor 21, and the current is reduced.

After the first motor 21 is overcurrent and the relay is turned off, the first motor 21 is stopped, the second motor shaft 75 is opened and repels the second magnet 77, the second magnet 77 drives the fifth rotating shaft 43 to slide downwards, the fifth rotating shaft 43 drives the fifth bevel gear 20 to contact with the first bevel gear 19, the second motor 74 is turned on, the second motor 74 drives the second motor shaft 75 to rotate, the second motor shaft 75 drives the third V-belt pulley 73 to rotate, the third V-belt pulley 73 drives the V-belt 60 to transmit, the V-belt 60 drives the first V-belt pulley 81 to rotate, the first V-belt pulley 81 drives the fourth rotating shaft 80 to rotate, the fourth rotating shaft 80 drives the fifth rotating shaft 43 to rotate, the fifth rotating shaft 43 drives the fifth bevel gear 20 to rotate, and the fifth bevel gear 20 drives the first bevel gear 19 to rotate, the first bevel gear 19 drives the wheel 12 to rotate continuously, the speed sensor 13 detects the rotation speed of the wheel 12 and controls the current to the second electromagnetic switch 65, so as to control the electromagnetic force of the second electromagnetic switch 65, the second electromagnetic switch 65 attracts the third magnet 63 and drives the third magnet 63 to move upward, the third magnet 63 drives the sixth rotating shaft 62 to slide upward, the sixth rotating shaft 62 drives the second V-belt pulley 61 to slide upward, the fourth spring 70 is in a compressed state, the fourth spring 70 pushes the seventh rotating shaft 71 to slide downward, the seventh rotating shaft 71 drives the fourth V-belt pulley 72 to move downward, the transmission ratio of the V-belt 60 is increased, so that the speed of the wheel 12 is kept constant, and safety is ensured.

When the fifth bevel gear 20, the second bevel gear 41 and the first bevel gear 19 are engaged, the fifth bevel gear 20 and the second bevel gear 41 are also engaged with the sixth bevel gear 44 at the same time, the fifth bevel gear 20 and the second bevel gear 41 drive the sixth bevel gear 44 to rotate, the sixth bevel gear 44 drives the ninth rotating shaft 47 to rotate, the ninth rotating shaft 47 drives the fourth belt pulley 45 to rotate, the fourth belt pulley 45 drives the second belt 48 to transmit, the second belt 48 drives the third belt pulley 50 to rotate, the third belt pulley 50 drives the eighth rotating shaft 49 to rotate, the eighth rotating shaft 49 drives the worm 52 to rotate, the worm 52 drives the worm wheel 55 to rotate, the worm wheel 55 drives the tenth rotating shaft 57 to rotate, and the tenth rotating shaft 57 drives the shaft sleeve 56 to rotate, the shaft sleeve 56 drives the fan 58 to rotate, the first ventilation valve 54 and the second ventilation valve 15 are opened, the fan 58 sucks air in the moving cavity 11 from the first ventilation valve 54 and leads the air to the first transmission cavity 42, and the air cools the first motor 21 after passing through the first motor 21. Air is discharged out of the machine body 10 through the second air passage 16 and the second air vent valve 15, and finally the diversified intelligent overcurrent circuit protection device is achieved.

In the above manner, a person skilled in the art can make various changes depending on the operation mode within the scope of the present invention.