Asphalt distribution power system and electric asphalt distribution truck

Abstract

The utility model relates to an asphalt distribution power system and an electric asphalt distribution truck, the electric asphalt distribution truck is provided with the asphalt distribution power system and comprises a power battery, a centralized controller, a first motor, a second motor, a third motor and a heating system; the power battery is electrically connected with the centralized controller; the integrated controller is connected with an external power source, the first motor, the second motor, the third motor and the heating system. The centralized controller and the external power supply are in a bidirectional connection mode; the first motor is connected with a chassis running mechanism of the asphalt distribution truck; the second motor is connected with an asphalt circulating system of the asphalt distribution truck; the third motor is connected with a heat conduction oil circulating system of the asphalt distribution truck; and the heating system is used for heating the asphalt. The power system is simple in structure, convenient to operate, wide in application range, high in operation efficiency, low in cost and environmentally friendly.

Description

Technical Field

[0001] The utility model relates to an asphalt spreading power system and an electric asphalt spreading vehicle, belonging to the technical field of electric asphalt spreading vehicles. Background Art

[0002] Traditional asphalt spreaders come in two types: single-engine and twin-engine. In single-engine asphalt spreaders, the chassis engine powers both the chassis and the hydraulic system when the attached working device is operating, via the clutch and power take-off. In twin-engine asphalt spreaders, the chassis engine and the attached working device power the chassis and the attached working device, respectively. Single-engine asphalt spreaders have the following disadvantages: 1) The chassis engine speed affects the speed of the attached hydraulic pump, which in turn affects the speed of the asphalt pump, preventing the asphalt pump from operating at its optimal speed; 2) The chassis engine speed is affected by the load on the attached working device, resulting in unstable speed, which in turn leads to unstable vehicle speed and poor construction quality; 3) Asphalt spreaders generally have operating modes such as heating, transport, circulation, and spreading. The chassis engine must be running in each operating mode, resulting in low engine efficiency and high operating costs. Twin-engine asphalt spreaders have the following disadvantages: 1) Two sets of engines result in high construction noise, which limits municipal construction and nighttime construction; 2) Two sets of engines have high maintenance costs; 3) The upper engine is matched according to the maximum workload, and the required power in most working modes is far lower than the power of the upper engine, resulting in low working efficiency of the upper engine.

[0003] Chinese patent CN106480808B discloses a pure electric foamed asphalt distributor. The battery is charged via a power grid charging port. The battery output current is boosted and rectified by a control cabinet before entering the power ports for the travel system, electrical system, hydraulic system, pneumatic system, and asphalt foaming and spraying system. This provides power for the travel system, electrical system, hydraulic system, pneumatic system, and asphalt foaming and spraying system, thereby utilizing the battery as the power source for the entire foamed asphalt distributor. This battery-powered pure electric technology solution can address the shortcomings of the single- or dual-engine power systems of conventional asphalt distributors. However, this solution suffers from a complex power system, requiring frequent battery charging, a complex operation process, and the inability to use the distributor while the battery is charging. These issues limit the application of electric asphalt distributors.

[0004] Therefore, there is an urgent need for an asphalt spreading power system and an electric asphalt spreading vehicle with a simple power system structure, easy operation, all-weather uninterrupted operation, and a wide range of applications. Summary of the Invention

[0005] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide an asphalt spreading power system and an electric asphalt spreading vehicle with a simple power system structure, easy operation, all-weather uninterrupted operation and a wide range of applications.

[0006] The purpose of this utility model is achieved in this way:

[0007] An asphalt spreading power system, installed on an asphalt spreading vehicle, characterized by comprising a power battery, a centralized controller, a first motor, a second motor, a third motor, and a heating system; the power battery is electrically connected to the centralized controller; the centralized controller is respectively connected to an external power supply, the first motor, the second motor, the third motor, and the heating system;

[0008] The centralized controller and the external power supply are in a bidirectional connection mode: an external power supply mode, in which the external power supply provides power, charges the power battery through the centralized controller, and supplies power to the first motor, the second motor, the third motor, and the heating system; an external discharge mode, in which the power battery provides power, provides power to the external equipment of the asphalt spreader through the centralized controller, and supplies power to the first motor, the second motor, the third motor, and the heating system;

[0009] The first motor is connected to the chassis traveling mechanism of the asphalt spreader to drive the asphalt spreader to move forward; the second motor is connected to the asphalt circulation system of the asphalt spreader to provide power for the circulation and transportation of the asphalt; the third motor is connected to the thermal oil circulation system of the asphalt spreader to provide power for the circulation and transportation of the thermal oil; the heating system heats the asphalt.

[0010] Furthermore, the power battery is connected to the centralized controller via a charge and discharge module; when the power battery is supplying power, the power battery discharges to the centralized controller; when the power battery is charging, the centralized controller charges the power battery.

[0011] Furthermore, the chassis traveling mechanism includes a gearbox connected to the first electric motor, a transmission shaft connected to the gearbox, and a drive axle connected to the transmission shaft.

[0012] Furthermore, the asphalt circulation system includes an asphalt pump transmission-connected to the second motor and an asphalt storage tank connected to the asphalt pump via a pipeline and a valve.

[0013] Furthermore, the thermal oil circulation system includes a thermal oil pump transmission-connected to the third motor and a thermal oil pipe arranged in the asphalt storage tank; the thermal oil pump is connected to the thermal oil pipe through a pipeline and a valve.

[0014] Furthermore, the heating system includes an electric heating tube and a thermocouple arranged in the asphalt storage tank of the asphalt spreader, and a heating control module arranged in the centralized controller; the heating control module controls the heating of the asphalt by the electric heating tube through the temperature signal fed back by the thermocouple.

[0015] An electric asphalt spreading vehicle is equipped with any of the above-mentioned asphalt spreading power systems.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] The asphalt spreading power system and electric asphalt spreader of the present invention adopt a power battery as the energy supply for the entire asphalt spreader, and a centralized controller serves as the control center of each working system of the asphalt spreader, so that the first motor, the second motor, the third motor and each part of the heating system can operate independently, and each system does not affect each other, effectively improving construction quality, reducing construction noise, and lowering maintenance costs; the centralized controller can reasonably output the power required by the power battery according to different working conditions, without causing power waste; an external power supply can be directly used as a power source, especially in the heating stage with the highest energy consumption, which significantly reduces construction costs; the centralized controller has the functions of internal charging and external discharging, which makes the use of the asphalt spreader more flexible, without being restricted by site or time, effectively improving work efficiency and reducing work costs; the entire asphalt spreading power system is a pure electric structure, the whole machine has zero emissions, low working noise, and can adapt to a variety of working environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a schematic diagram of the connection structure of an asphalt spreading power system.

[0019] Figure 2 This is a schematic diagram of the connection of the asphalt circulation system of the asphalt spreading power system of the utility model.

[0020] Figure 3 This is a connection diagram of a heat transfer oil circulation system of an asphalt spreading power system of the utility model.

[0021] Figure 4 This is a schematic diagram of the connection of the heating system of an asphalt spreading power system of the utility model.

[0022] in:

[0023] Power battery 1, centralized controller 2, first motor 3, second motor 4, third motor 5, heating system 6, external power supply 7, gearbox 8, drive shaft 9, drive axle 10, asphalt pump 11, asphalt storage tank 12, thermal oil pump 13, thermal oil pipe 14, electric heating pipe 15, thermocouple 16, heater 17. DETAILED DESCRIPTION Example

[0024] See also Figures 1 to 4 The utility model relates to an asphalt spreading power system, which is installed on an asphalt spreading vehicle and includes a power battery 1, a centralized controller 2, a first motor 3, a second motor 4, a third motor 5 and a heating system 6;

[0025] The power battery 1 is electrically connected to the centralized controller 2; the power battery 1 and the centralized controller 2 are connected via a charge and discharge module provided inside the centralized controller 2; when the power battery 1 is supplying power, the power battery 1 discharges to the centralized controller 2; when the power battery 1 is charging, the centralized controller 2 charges the power battery 1;

[0026] The centralized controller 2 is connected to the external power supply 7, the first motor 3, the second motor 4, the third motor 5 and the heating system 6 respectively, and independently drives and controls the first motor 3, the second motor 4, the third motor 5 and the heating system 6;

[0027] The centralized controller 2 and the external power supply 7 are in a bidirectional connection mode: I external power supply mode, in this mode, the external power supply 7 provides power, and the power battery 1 is charged through the centralized controller 2, while the first motor 3, the second motor 4, the third motor 5 and the heating system 6 are powered; II external discharge mode, in this mode, the power battery 1 provides power, and the centralized controller 2 provides power to external devices other than the asphalt spreader, while the first motor 3, the second motor 4, the third motor 5 and the heating system 6 are powered; the bidirectional connection mode, that is, the centralized controller 2 has two working modes: internal charging and external discharging;

[0028] The first motor 3 is connected to the chassis travel mechanism of the asphalt spreader to drive the asphalt spreader; the chassis travel mechanism includes a gearbox 8 connected to the first motor 3, a transmission shaft 9 connected to the gearbox 8, and a drive axle 10 connected to the transmission shaft 9; the first motor 3 is started and stopped by the centralized controller 2, thereby driving the gearbox 8, transmission shaft 9, and drive axle 10 of the chassis travel mechanism to achieve the movement of the asphalt spreader;

[0029] The second motor 4 is connected to the asphalt circulation system of the asphalt spreader to provide power for the circulation of asphalt. The asphalt circulation system includes an asphalt pump 11 connected to the second motor 4 and an asphalt storage tank 12 connected to the asphalt pump 11 via pipes and valves. The centralized controller 2 controls the start and stop of the second motor 4, thereby driving the asphalt pump 11 to realize the circulation of asphalt.

[0030] The third motor 5 is connected to the thermal oil circulation system of the asphalt spreader to provide power for the circulation and transportation of the thermal oil. The thermal oil circulation system includes a thermal oil pump 13 connected to the third motor 5 and a thermal oil pipe 14 provided in the asphalt storage tank 12. The thermal oil pump 13 is connected to the thermal oil pipe 14 via a pipeline and a valve. The centralized controller 2 controls the third motor 5 to drive the thermal oil pump 13 to operate, so that the thermal oil circulates in the asphalt storage tank 12 and performs a heat treatment on the asphalt in the asphalt storage tank 12. In order to realize the auxiliary heating function of the thermal oil on the asphalt, a heater 17 can be provided to heat the thermal oil, and the heat is transferred to the asphalt through the circulation of the thermal oil to achieve the purpose of heating the asphalt.

[0031] The heating system 6 heats the asphalt and comprises an electric heating tube 15 and thermocouple 16 installed in the asphalt storage tank 12 of the asphalt distributor, and a heating control module installed in the centralized controller 2. The heating control module of the centralized controller 2 controls the heating of the asphalt by the electric heating tube 15 using the temperature signal fed back by the thermocouple 16. Specifically, target temperatures A and B can be set in the heating control module, with A > B. When the temperature fed back by the thermocouple 16 reaches target temperature A, heating automatically stops, and when the temperature falls below target temperature B, heating resumes, maintaining the asphalt temperature within a reasonable range. Optionally, the thermal oil circulation system can be activated simultaneously to provide auxiliary heating and equalization for the asphalt, further evening out the temperature distribution of the asphalt within the asphalt storage tank 12.

[0032] The utility model adopts a power battery 1 as the energy supply for the entire asphalt spreader, and a centralized controller 2 as the control center of each working system of the asphalt spreader, so that the first motor 3, the second motor 4, the third motor 5 and the heating system 6 can operate independently, and the systems do not affect each other, effectively improving the construction quality, reducing construction noise, and reducing maintenance costs; the centralized controller 2 can reasonably output the power required by the working conditions of the power battery 1 according to different working conditions, without causing power waste; an external power supply can be directly used as a power source, especially in the heating stage with the largest energy consumption, which significantly reduces construction costs; the centralized controller 2 has the functions of internal charging and external discharging, which makes the use of the asphalt spreader more flexible, improves working efficiency, and reduces working costs; the entire asphalt spreading power system is a pure electric structure, the whole machine has zero emissions, low working noise, can operate in all weather conditions, and can adapt to a variety of working environments. Example

[0033] The utility model relates to an electric asphalt spreader, which is equipped with the asphalt spreading power system of the above-mentioned embodiment 1, so that the chassis driving, asphalt circulation, thermal oil circulation, asphalt heating and other working systems of the asphalt spreader can be independently operated according to actual working conditions without interfering with each other, and has high construction quality, high construction efficiency, low construction cost, wide application range, low working noise, and is green and energy-saving.

[0034] In addition: It should be noted that the above specific implementation is only an optimization scheme of this patent. Any changes or improvements made by technicians in this field based on the above concept are within the scope of protection of this patent.

Claims

1. An asphalt spreading power system, installed on an asphalt spreading vehicle, characterized in that: It comprises a power battery, a centralized controller, a first motor, a second motor, a third motor and a heating system; the power battery is electrically connected to the centralized controller; the centralized controller is respectively connected to an external power supply, the first motor, the second motor, the third motor and the heating system; The centralized controller and the external power supply are in a two-way connection mode: an external power supply mode, in which the external power supply provides power, the power battery is charged through the centralized controller, and the first motor, the second motor, the third motor and the heating system are powered at the same time; an external discharge mode, in which the power battery provides power, the centralized controller provides power to the external equipment of the asphalt spreader, and the first motor, the second motor, the third motor and the heating system are powered at the same time; The first motor is connected to the chassis travel mechanism of the asphalt spreader to drive the asphalt spreader to move forward; the second motor is connected to the asphalt circulation system of the asphalt spreader to provide power for the circulation and transportation of the asphalt; the third motor is connected to the heat transfer oil circulation system of the asphalt spreader to provide power for the circulation and transportation of the heat transfer oil; the heating system heats the asphalt.

2. The asphalt spreading power system according to claim 1, characterized in that: The power battery is connected to the centralized controller via a charge and discharge module; when the power battery supplies power, the power battery discharges to the centralized controller, and when the power battery is charged, the centralized controller charges the power battery.

3. The asphalt spreading power system according to claim 1, characterized in that: The chassis travel mechanism comprises a gearbox connected to the first motor, a transmission shaft connected to the gearbox, and a drive axle connected to the transmission shaft.

4. The asphalt spreading power system according to claim 1, characterized in that: The asphalt circulation system comprises an asphalt pump drivingly connected to the second motor and an asphalt storage tank connected to the asphalt pump via a pipeline and a valve.

5. The asphalt spreading power system according to claim 1, characterized in that: The heat transfer oil circulation system comprises a heat transfer oil pump drivingly connected to the third motor and a heat transfer oil pipe arranged in the asphalt storage tank; the heat transfer oil pump is connected to the heat transfer oil pipe through a pipeline and a valve.

6. The asphalt spreading power system according to claim 1, characterized in that: The heating system comprises an electric heating tube and a thermocouple arranged in the asphalt storage tank of the asphalt spreader, and a heating control module arranged in the centralized controller; the heating control module controls the heating of the asphalt by the electric heating tube through the temperature signal fed back by the thermocouple.

7. An electric asphalt spreading vehicle, characterized in that: An asphalt spreading power system according to any one of claims 1 to 6 is installed.

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