Diesel-electricity dual-power concrete pump power control system

Abstract

The utility model relates to a diesel-electric hybrid concrete pump power control system which comprises a power supply (1), an electric power-on and power-off switch (2), a PTO switch (3), a start-stop switch (4) and a controller (5). The electric power-on and power-off switch (2), the PTO switch (3) and the start-stop switch (4) are connected in parallel to the positive electrode of the power supply (1); the electric power-on and power-off switch (2) is connected with the controller (5) and provides electric power-on and power-off electric signals for the controller (5), and the power-on electric signal is further connected with a first relay (6) for controlling a pumping main power supply K2 switch; the PTO switch (3) is connected with the controller (5), the PTO switch (3) is also connected with the second relay (7) for controlling the K1 switch (8), and the K1 switch (8) is connected with the first relay (6); and the start-stop switch (4) is connected with the controller (5). The device is simple in structure, low in cost, convenient to operate and high in reliability.

Description

Technical Field

[0001] The utility model relates to a diesel-electric dual-power concrete pump power control system, belonging to the technical field of concrete pump control. Background Art

[0002] With the further advancement of new energy electrification, hybrid concrete pumps that can be powered by both oil and electricity have become a new option, with more flexible power options, higher operating efficiency, and more energy saving. Figure 1 , including chassis, transfer case, drive motor and hydraulic pump. Its dual-power working principle is: in the engine working mode, the chassis engine is used to take power, so that the chassis engine and the hydraulic pump are connected, and the motor is disconnected at the same time; in the motor working mode, the motor and the hydraulic pump are connected, and the chassis power is disconnected at the same time.

[0003] For concrete pumps where the motor and engine do not work at the same time, when using power control, it is necessary to select the mode when choosing to use motor power or engine power. In addition, the conventional pumping main power supply requires a power switch, the motor requires a special switch for power on and off and a motor start and stop switch, and the engine requires an engine start and stop switch. If the electrical principle design is carried out according to the conventional function, refer to Figure 2 , it is necessary to design more switches accordingly, and multiple steps such as mode switching, dual power start and stop are required during operation, resulting in high material cost of the electrical system, relatively low reliability, cumbersome operation, prone to misoperation, and low user acceptance. Therefore, there is an urgent need for a diesel-electric dual-power concrete pump power control system with simple structure, low cost, easy operation and high reliability. Summary of the invention

[0004] The utility model aims to overcome the above-mentioned shortcomings and provide a diesel-electric dual-power concrete pump power control system with simple structure, low cost, convenient operation and high reliability.

[0005] The purpose of the utility model is achieved in this way:

[0006] A diesel-electric dual-power concrete pump power control system comprises a power supply, an electric power on and off switch, a PTO switch, a start-stop switch and a controller; the electric power on and off switch, the PTO switch and the start-stop switch are connected in parallel to the positive pole of the power supply; the electric power on and off switch is connected to the controller to provide the controller with electric power on and off signals, wherein the power on signal is also connected to the first relay controlling the pumping main power supply K2 switch; the PTO switch is connected to the controller to provide the controller with a PTO input signal, and the PTO switch is also connected to the second relay controlling the K1 switch, and the K1 switch is connected to the first relay; the start-stop switch is connected to the controller to provide the controller with start and stop signals.

[0007] Furthermore, the first relay and the second relay are both electromagnetic relays, wherein the first relay is a high-power relay.

[0008] Furthermore, the controller is a PLC or an industrial computer, which includes a control program for determining the working mode according to input signals of the electric power on and off switch and the PTO switch, and outputting corresponding motor or engine start and stop control according to the start and stop signal of the start and stop switch.

[0009] Furthermore, the electric power on and off switch is a three-speed switch, which is connected to the high-voltage power-on terminal and the high-voltage power-off signal terminal of the controller respectively, and inputs high-voltage power-on and power-off signals to the controller.

[0010] Furthermore, the start-stop switch is a three-speed switch, which is connected to the start and stop signal terminals of the controller respectively, and inputs start and stop signals to the controller.

[0011] Furthermore, the power source is a vehicle-mounted battery or a lithium battery pack.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model automatically switches the working mode by changing the input of the programmable controller through the PTO switch. A set of control switches is used for two mode control, so that the power supply, start and stop, and power on and off can be controlled by using fewer switches, which simplifies the electrical system structure, reduces the difficulty of operation, improves the reliability of the system, and reduces the material cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic diagram of the vehicle control system of a diesel-electric dual-power concrete pump.

[0015] Figure 2 This is the electrical schematic diagram of a conventional dual-power concrete pump.

[0016] Figure 3 The utility model is a schematic diagram of a diesel-electric dual-power concrete pump power control system.

[0017] in:

[0018] Power supply 1, electric on and off switch 2, PTO switch 3, start and stop switch 4, controller 5, first relay 6, second relay 7, K1 switch 8. DETAILED DESCRIPTION

[0019] See also Figure 3The utility model relates to a diesel-electric dual-power concrete pump power control system, comprising a power supply 1, an electric power switch 2, a PTO switch 3, a start-stop switch 4 and a controller 5; the power supply 1 is a vehicle-mounted battery or a lithium battery pack, which provides DC power supply for the control system; the electric power switch 2, the PTO switch 3, and the start-stop switch 4 are connected in parallel to the positive electrode of the power supply 1; the start-stop switch 4 is a three-speed switch, which is respectively connected to the start IN2 and stop IN3 signal terminals of the controller 5, and inputs start and stop signals to the controller 5; the controller 5 is a PLC or an industrial computer, which comprises a control program for judging the working mode according to the input signals of the electric power switch 2 and the PTO switch 3, and outputting the corresponding motor or engine start-stop control according to the start-stop signal of the start-stop switch 4;

[0020] The electric power on and off switch 2 is a three-speed switch, which is connected to the high-voltage power-on IN5 and high-voltage power-off IN4 signal terminals of the controller 5 respectively, and inputs high-voltage power-on and power-off signals to the controller 5, wherein the power-on IN5 signal terminal is also connected to the first relay 6 that controls the pumping main power supply K2 switch; the first relay 6 is a high-power electromagnetic relay; when the electric power on and off switch 2 is connected to the high-voltage power-on IN5 signal terminal, the controller 5 receives the high-voltage power-on signal, determines that the control system enters the motor mode, and at the same time, the first relay 6 is energized, so that the pumping main power supply K2 switch is attracted to supply power to the pumping main power supply to make it work, and at the same time, if the controller 5 receives the start-stop signal of the start-stop switch 4, the corresponding control motor is started and stopped;

[0021] The PTO switch 3 is connected to the PTO input IN1 signal terminal of the controller 5 to provide the PTO input signal to the controller 5. At the same time, the PTO switch 3 is also connected to the second relay 7 that controls the K1 switch 8, and the K1 switch 8 is connected to the first relay 6; the second relay 7 is an electromagnetic relay; when the PTO switch 3 is turned on, the controller 5 receives the PTO input signal and determines that the control system enters the chassis engine mode. At the same time, after the second relay 7 is energized and the K1 switch 8 is turned on, the first relay 6 is energized, so that the pumping main power supply K2 switch is energized to supply power to the pumping main power supply to make it work. At the same time, if the controller 5 receives the start-stop signal of the start-stop switch 4, the chassis engine is controlled to start and stop accordingly;

[0022] When the new energy dual-power concrete pump is working, when the cab presses the PTO switch 3 to take power, the K1 switch 8 is energized, the pumping main power supply K2 switch is energized, the concrete pump controller is energized, and the controller 5 receives the PTO signal and determines that it is the chassis engine mode. At this time, the motor control is not activated, and the start-stop switch 4 is used as the engine start-stop signal input; when the PTO switch 3 is not pressed, the controller 5 determines that the chassis engine is not working. At this time, the electric up and down power switch 2 simultaneously realizes the opening of the pumping main power supply K2 switch and the motor high voltage power-on function. At this time, the controller 5 does not activate the chassis engine control, and the start-stop switch 4 is used as the motor start-stop signal input. The two working modes are simple to operate. In the chassis engine mode, the operation is the same as that of a conventional engine pump truck. The PTO power is taken directly and then it can be operated; in the motor mode, you only need to stop taking power and then turn on the power switch. There is no need to switch the mode and power on the manual switch, which reduces the possibility of misoperation and improves the reliability of the system.

[0023] Compared with the conventionally designed new energy dual-power diesel-electric concrete pump electrical system, the diesel-electric dual-power concrete pump power control system of the utility model uses whether the PTO switch is triggered to judge different working modes, and shares a set of control switches for start and stop control, reducing the use of switches and switching relays. It has the advantages of simple overall structure, less material used, low cost, easy operation and high reliability.

[0024] 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. A diesel-electric dual-power concrete pump power control system, characterized in that: The invention comprises a power supply (1), an electric power on / off switch (2), a PTO switch (3), a start / stop switch (4) and a controller (5); the electric power on / off switch (2), the PTO switch (3) and the start / stop switch (4) are connected in parallel to the positive electrode of the power supply (1); the electric power on / off switch (2) is connected to the controller (5) to provide the controller (5) with electric power on / off signals, wherein the power on signal is also connected to a first relay (6) for controlling a pumping main power switch K2; the PTO switch (3) is connected to the controller (5) to provide a PTO input signal to the controller (5), the PTO switch (3) is also connected to a second relay (7) for controlling a K1 switch (8), and the K1 switch (8) is connected to the first relay (6); the start / stop switch (4) is connected to the controller (5) to provide a start / stop signal to the controller (5).

2. The diesel-electric dual-power concrete pump power control system according to claim 1 is characterized in that: The first relay (6) and the second relay (7) are both electromagnetic relays, wherein the first relay (6) is a high-power relay.

3. The diesel-electric dual-power concrete pump power control system according to claim 1 is characterized in that: The controller (5) is a PLC or an industrial computer, and includes a control program for determining the working mode according to input signals from the electric power on / off switch (2) and the PTO switch (3), and outputting corresponding motor or engine start / stop control according to the start / stop signal from the start / stop switch (4).

4. The diesel-electric dual-power concrete pump power control system according to claim 1 is characterized in that: The electric power-on and power-off switch (2) is a three-speed switch, which is respectively connected to the high-voltage power-on terminal and the high-voltage power-off signal terminal of the controller (5) to input high-voltage power-on and power-off signals to the controller (5).

5. The diesel-electric dual-power concrete pump power control system according to claim 1 is characterized in that: The start-stop switch (4) is a three-speed switch, which is connected to the start and stop signal terminals of the controller (5) respectively, and inputs the start and stop signals to the controller (5).

6. The diesel-electric dual-power concrete pump power control system according to claim 1 is characterized in that: The power source (1) is a vehicle-mounted storage battery or a lithium battery pack.

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