Emergency pumping control system and concrete pump truck

Abstract

The utility model provides an emergency pumping control system and a concrete pump truck, and relates to the technical field of engineering machinery. The emergency pumping control system is arranged in parallel with a controller output module, is used for emergency control after the controller output module breaks down, and comprises an emergency power supply and a voltage regulator, the emergency power supply is used for being connected with a rotating speed control circuit of an engine, and the voltage regulator is used for being connected with the controller output module. And the voltage regulator is arranged between the emergency power supply and the rotating speed control circuit and is used for regulating the voltage provided by the emergency power supply so as to regulate the rotating speed of the engine. When failure conditions such as controller faults occur, the emergency power supply supplies power to the rotating speed control circuit of the engine, so that the emergency pumping function is realized; during emergency pumping, the voltage provided by the emergency power supply is adjusted through the voltage regulator, so that the rotating speed of the engine can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to an emergency pumping control system and a concrete pump truck. Background Art

[0002] Concrete pump trucks refer to construction equipment that transports concrete through a pumping mechanism. They usually include a special chassis for engineering vehicles equipped with a diesel engine and a pumping mechanism. The working principle of the pumping mechanism can be simplified to using a hydraulically driven pumping mechanism to press concrete into a pipeline, and using an extendable and rotatable boom to carry out material laying. The power of the hydraulic system comes from the chassis engine of the car, and the flow direction of the hydraulic oil is controlled by multiple solenoid valves and a centralized valve group. The electrical system of the concrete pump truck mainly controls the on and off of each solenoid valve to achieve various pumping functions.

[0003] Since the operation of the electrical system of a concrete pump truck is highly dependent on the reliable operation of the controller, if the controller fails, the pumping function of the pump truck will be completely paralyzed, causing pipe blockage and concrete waste. Therefore, an emergency pumping system is usually configured for the electrical system of a concrete pump truck. However, in the current emergency pumping system, the engine can only run at the highest speed and the speed cannot be adjusted. Utility Model Content

[0004] The problem solved by the utility model is how to realize emergency pumping and engine speed regulation when a controller fails.

[0005] In order to solve the above problems, the utility model provides an emergency pumping control system and a concrete pump truck.

[0006] In a first aspect, the utility model provides an emergency pumping control system, which is arranged in parallel with a controller output module and is used for emergency control after a failure of the controller output module. The emergency power supply includes an emergency power supply and a voltage regulator. The emergency power supply is used to be connected to a speed control circuit of an engine. The voltage regulator is arranged between the emergency power supply and the speed control circuit. The voltage regulator is used to adjust the voltage provided by the emergency power supply to adjust the speed of the engine.

[0007] The utility model can supply power to the engine speed control circuit through the emergency power supply when a failure such as a controller failure occurs, thereby realizing an emergency pumping function; during emergency pumping, the voltage provided by the emergency power supply is adjusted through the voltage regulator, thereby being able to adjust the engine speed.

[0008] Optionally, the emergency pumping control system also includes solenoid valves, which include one or more of a first solenoid valve corresponding to the main oil pump, a second solenoid valve corresponding to the main overflow valve, a third solenoid valve corresponding to the accumulator, a fourth solenoid valve corresponding to the swing cylinder reversing module, a fifth solenoid valve corresponding to the master cylinder reversing module, and a sixth solenoid valve corresponding to the stirring module.

[0009] Optionally, the emergency pumping control system further includes an emergency switch, and the emergency power supply is used to connect to the speed control circuit and the solenoid valve when the emergency switch is closed.

[0010] Optionally, the emergency switch, the solenoid valve and the speed control circuit are connected in parallel, and a first power supply switch is respectively provided on the parallel branches where the solenoid valve and the speed control circuit are located. The solenoid valve is used to obtain power when the emergency switch is closed to control the first power supply switch to close.

[0011] Optionally, the emergency pumping control system also includes a second power supply switch, which is respectively provided between the solenoid valve and the controller output module and between the speed control circuit and the controller output module. The solenoid valve is used to obtain power when the emergency switch is closed to control the second power supply switch to disconnect.

[0012] Optionally, the emergency pumping control system further comprises an emergency stop switch, which is connected in series with the emergency power supply, and is used to cut off the power supply of the emergency power supply to the speed control circuit and the solenoid valve.

[0013] The utility model is provided with an emergency stop switch, so that the power supply of the emergency power supply to the control circuit of the engine and the pumping electromagnetic valve can be cut off in case of emergency.

[0014] Optionally, the emergency pumping control system also includes branch switches, which include a first branch switch arranged between the emergency power supply and the first solenoid valve, a second branch switch arranged between the emergency power supply and the second solenoid valve, a third branch switch arranged between the emergency power supply and the third solenoid valve, a fourth branch switch arranged between the emergency power supply and the fourth solenoid valve, a fifth branch switch arranged between the emergency power supply and the fifth solenoid valve, and a sixth branch switch arranged between the emergency power supply and the sixth solenoid valve.

[0015] The utility model controls the power supply of the solenoid valves corresponding to the main oil pump, the main overflow valve, the accumulator, the swing cylinder reversing function, the main oil cylinder reversing function and the stirring function through the corresponding branch switches, so as to realize the forward and reverse rotation functions of the stirring blades and further realize the emergency pumping function.

[0016] Optionally, the voltage regulator is a knob-type potentiometer.

[0017] The utility model can realize various speed adjustments by setting the voltage regulator as a knob-type potentiometer.

[0018] Optionally, the emergency pumping control system further includes one or more of a main oil pump, a main overflow valve, an accumulator, a swing cylinder reversing module, a main cylinder reversing module and a stirring module connected to the emergency power supply.

[0019] In a second aspect, the utility model provides a concrete pump truck, comprising the above emergency pumping control system. The advantages of the concrete pump truck and the above emergency pumping control system over the prior art are the same, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 Schematic diagram of the emergency pumping control system of the utility model embodiment Figure 1 ;

[0021] Figure 2 Schematic diagram of the emergency pumping control system of the utility model embodiment Figure 2 ;

[0022] Figure 3 It is a circuit connection diagram of the emergency pumping control system of the embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of a control box body of an emergency pumping control system according to an embodiment of the utility model. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0025] like Figure 1 As shown, an embodiment of the utility model provides an emergency pumping control system, which is arranged in parallel with a controller output module and is used for emergency control after a failure of the controller output module. It includes an emergency power supply and a voltage regulator. The emergency power supply is used to be connected to a speed control circuit of an engine. The voltage regulator is arranged between the emergency power supply and the speed control circuit. The voltage regulator is used to adjust the voltage provided by the emergency power supply to adjust the speed of the engine.

[0026] Specifically, combined Figure 2 and Figure 3As shown, the emergency pumping control system includes an emergency power supply (24V+) and a voltage regulator (R1), which are arranged in parallel with the controller output module (e.g., in a parallel arrangement, etc.). When the controller fails, the controller output module no longer provides power. At this time, the emergency switch can be closed (automatically or manually closed, e.g. Figure 4 The emergency power supply is connected to the engine speed control circuit and the solenoid valve by means of the "emergency mode switch" shown in the figure) or other methods, so that the emergency power supply is connected to the engine speed control circuit and the solenoid valve, thereby realizing the emergency pumping function; during the emergency pumping control process, the emergency switch can be used to enter and exit the emergency pumping mode, and its control method belongs to the prior art and will not be described here. Since the engine can only run at the highest speed in the existing emergency pumping system and the speed cannot be adjusted, this embodiment sets a voltage regulator between the emergency power supply and the engine speed control circuit (connected to the engine control circuit through the engine speed control interface), and adjusts the voltage provided by the emergency power supply through the voltage regulator, so that the engine speed can be adjusted.

[0027] In this embodiment, when a failure such as a controller failure occurs, the engine speed control circuit can be powered by an emergency power supply, thereby realizing an emergency pumping function; during emergency pumping, the voltage provided by the emergency power supply is adjusted by a voltage regulator, thereby being able to adjust the engine speed.

[0028] Among them, the emergency switch can be directly connected in series with the trunk line corresponding to the emergency power supply. When the emergency switch is closed, the emergency power supply is connected to the engine speed control circuit and the solenoid valve, but the engine speed control circuit and the solenoid valve are not disconnected from the controller output module; or the relay scheme in the following embodiment is adopted (reference Figure 3 ), which can not only connect the emergency power supply to the engine's speed control circuit and solenoid valve, but also cut off the connection between the engine's speed control circuit and solenoid valve and the controller output module.

[0029] Optionally, the emergency pumping control system further includes one or more of a main oil pump, a main overflow valve, an accumulator, a swing cylinder reversing module, a main cylinder reversing module and a stirring module connected to the emergency power supply.

[0030] Specifically, the emergency pumping control system also includes one or more of a main oil pump, a main overflow valve, an accumulator, a swing cylinder reversing module, a main cylinder reversing module and a stirring module connected to the emergency power supply.

[0031] Among them, the emergency pumping control system includes a control box, which is provided with buttons or knobs to facilitate the control of the emergency pumping control system. For example, the control box has an "emergency mode switch" button. When the "emergency mode switch" button is pressed, the emergency switch can be controlled to close. Furthermore, the control box is also provided with an "emergency stop" button. When the "emergency stop" button is pressed, the emergency power supply to the engine's control circuit and the pumping solenoid valve can be cut off; further, the control box is also provided with an "engine speed" knob. When the "engine speed" knob is rotated, the engine speed can be adjusted by the knob potentiometer; further, the control box is also provided with "main oil pump", "main overflow valve" and "accumulator" buttons, which can respectively enable the main oil pump, main overflow valve and accumulator to obtain regular power; further, the control box is also provided with "main cylinder left forward" and "main cylinder right forward" buttons for realizing the reversing action of the main oil cylinder; further, the control box is also provided with "swing cylinder left forward" and "swing cylinder right forward" for realizing the reversing action of the swing cylinder; further, the control box is also provided with "stirring forward" and "stirring reverse" for realizing the forward and reverse functions of the stirring blades in the hopper.

[0032] Optionally, the emergency pumping control system also includes solenoid valves, which include one or more of a first solenoid valve DT0 corresponding to the main oil pump, a second solenoid valve DT1 corresponding to the main overflow valve, a third solenoid valve DT17 corresponding to the accumulator, a fourth solenoid valve DT4, DT5 corresponding to the swing cylinder reversing module, a fifth solenoid valve DT6, DT9 corresponding to the master cylinder reversing module, and a sixth solenoid valve DT10, DT11 corresponding to the stirring module.

[0033] Specifically, combined Figure 3 As shown, the pumping solenoid valve includes a first solenoid valve (DT0), a second solenoid valve (DT1) and a third solenoid valve (DT17), the power supply of the first solenoid valve (DT0) is controlled by a first branch switch (S2), the power supply of the second solenoid valve (DT1) is controlled by a second branch switch (S3), and the power supply of the third solenoid valve (DT17) is controlled by a third branch switch (S10); specifically, the first branch switch (S2), the second branch switch (S3) and the third branch switch (S10) can be respectively Figure 4 The push switch in the control is combined with Figure 4 As shown, when the emergency pumping function is realized, by pressing Figure 4 The buttons of "main oil pump", "main overflow valve" and "accumulator" can respectively open the first branch switch (S2), the second branch switch (S3) and the third branch switch (S10), so that the main oil pump, the main overflow valve and the accumulator are always powered.

[0034] Combination Figure 3As shown, the pumping solenoid valve includes a fourth solenoid valve (DT4 corresponds to the left direction, DT5 corresponds to the right direction), and the power supply of the fourth solenoid valve (DT4, DT5) is controlled by the fourth branch switch (S4, S5), which can realize the reversing action of the swing cylinder. Figure 4 As shown, when the emergency pumping function is realized, the opening and closing state of the fourth branch switch (S4, S5) can be adjusted by controlling the button switches "swing cylinder left forward" and "swing cylinder right forward".

[0035] Combination Figure 3 As shown, the pumping solenoid valve includes a fifth solenoid valve (DT6 corresponds to right inlet, DT9 corresponds to left inlet), and the power supply of the fifth solenoid valve (DT6, DT9) is controlled by the fifth branch switch (S6, S7), which can realize the reversing action of the main oil cylinder. Figure 4 As shown, when the emergency pumping function is realized, the opening and closing state of the fifth branch switch (S6, S7) can be adjusted by controlling the button switches "master cylinder left forward" and "master cylinder right forward". By combining various connection sequences of S4 / S5 / S6 / S7, the corresponding hydraulic circuit is turned on, and the forward and reverse pumping functions can be realized.

[0036] Combination Figure 3 As shown, the pumping solenoid valve includes a sixth solenoid valve (DT10 corresponds to forward rotation, DT11 corresponds to reverse rotation). The power supply of the sixth solenoid valve (DT10, DT11) is controlled by the sixth branch switch (S8, S9), which can realize the forward and reverse rotation functions of the stirring blades in the hopper, corresponding to the forward and reverse pumps. Figure 4 As shown, when the emergency pumping function is realized, the opening and closing state of the sixth branch switch (S8, S9) can be adjusted by controlling the button switches "stirring forward" and "stirring reverse".

[0037] Optionally, the emergency pumping control system further includes an emergency switch S1, and the emergency power supply is used to connect to the speed control circuit and the solenoid valve when the emergency switch S1 is closed.

[0038] Specifically, combined Figure 3 As shown, the emergency pumping control system also includes an emergency switch (S1). At this time, the emergency switch (S1) is not located on the main line corresponding to the emergency power supply, but is in parallel with the branch where the speed control circuit of each solenoid valve and the engine is located. The emergency power supply is used to connect with the speed control circuit and the solenoid valve when the emergency switch S1 is closed.

[0039] Optionally, the emergency switch S1, the solenoid valve and the speed control circuit are connected in parallel, and a first power supply switch K1 is respectively provided on the parallel branches where the solenoid valve and the speed control circuit are located. The solenoid valve is used to obtain power when the emergency switch S1 is closed to control the first power supply switch K1 to be closed.

[0040] Specifically, when the emergency switch S1 is closed, the second power supply switch K2 between the controller output module and the engine's control circuit and solenoid valve is disconnected, so that the engine's speed control circuit and solenoid valve are disconnected from the controller output module, and at the same time, the first power supply switch K1 between the emergency power supply and the engine's speed control circuit and solenoid valve is closed, so that the engine's speed control circuit and solenoid valve (the corresponding branch switch also needs to be closed) are connected to the emergency power supply.

[0041] Optionally, the emergency pumping control system also includes a second power supply switch K2, and the second power supply switch K2 is respectively provided between the solenoid valve and the controller output module and between the speed control circuit and the controller output module. The solenoid valve is used to obtain power when the emergency switch S1 is closed, so as to control the second power supply switch K2 to be disconnected.

[0042] Specifically, the emergency pumping control system also includes a second power supply switch K2, which can disconnect the second power supply switch K2 between the controller output module and the engine speed control circuit and solenoid valve, thereby disconnecting the engine speed control circuit and solenoid valve from the controller output module.

[0043] Optionally, the emergency pumping control system further comprises an emergency stop switch, which is connected in series with the emergency power supply, and is used to cut off the power supply of the emergency power supply to the speed control circuit and the solenoid valve.

[0044] Specifically, combined Figure 3 As shown, the emergency pumping control system also includes an emergency stop switch connected in series with the emergency power supply. Figure 4 As shown, if an emergency occurs, press the "emergency stop" button. The emergency stop switch can cut off the emergency power supply to the engine's control circuit and pumping solenoid valve. All pumping solenoid valves lose power and the engine returns to idle state, realizing emergency stop operation.

[0045] In this embodiment, by providing an emergency stop switch, the emergency power supply to the engine speed control circuit and the solenoid valve can be cut off in an emergency.

[0046] Optionally, the emergency pumping control system also includes branch switches, which include a first branch switch S2 arranged between the emergency power supply and the first solenoid valve DT0, a second branch switch S3 arranged between the emergency power supply and the second solenoid valve DT1, a third branch switch S10 arranged between the emergency power supply and the third solenoid valve DT17, a fourth branch switch S4, S5 arranged between the emergency power supply and the fourth solenoid valve DT4, DT5, a fifth branch switch S6, S7 arranged between the emergency power supply and the fifth solenoid valve DT6, DT9, and a sixth branch switch S8, S9 arranged between the emergency power supply and the sixth solenoid valve DT10, DT11.

[0047] Specifically, combined Figure 3 As shown, the emergency pumping control system also includes branch switches (S2-S10), which can adjust the power supply of the corresponding pumping solenoid valves, so that the emergency pumping control system is suitable for concrete pump trucks with electronically controlled reversing; the branch switches can be automatically controlled or Figure 4 The toggle switch shown is for manual control.

[0048] The first branch switch (S2), the second branch switch (S3) and the third branch switch (S10) can be respectively Figure 4 The push switch in the control is combined with Figure 4 As shown, when the emergency pumping function is realized, by pressing Figure 4 The buttons of "main oil pump", "main overflow valve" and "accumulator" can respectively open the first branch switch (S2), the second branch switch (S3) and the third branch switch (S10), so that the main oil pump, the main overflow valve and the accumulator are always powered.

[0049] Among them, combined Figure 3 As shown, the pumping solenoid valve includes a fourth solenoid valve (DT4 corresponds to the left direction, DT5 corresponds to the right direction), and the power supply of the fourth solenoid valve (DT4, DT5) is controlled by the fourth branch switch (S4, S5), which can realize the reversing action of the swing cylinder. Figure 4 As shown, when the emergency pumping function is realized, the opening and closing state of the fourth branch switch (S4, S5) can be adjusted by controlling the button switches "swing cylinder left forward" and "swing cylinder right forward".

[0050] Among them, combined Figure 3 As shown, the pumping solenoid valve includes a fifth solenoid valve (DT6 corresponds to right inlet, DT9 corresponds to left inlet), and the power supply of the fifth solenoid valve (DT6, DT9) is controlled by the fifth branch switch (S6, S7), which can realize the reversing action of the main oil cylinder. Figure 4As shown, when the emergency pumping function is realized, the opening and closing state of the fifth branch switch (S6, S7) can be adjusted by controlling the button switches "master cylinder left forward" and "master cylinder right forward". By combining various connection sequences of S4 / S5 / S6 / S7, the corresponding hydraulic circuit is turned on, and the forward and reverse pumping functions can be realized.

[0051] Among them, combined Figure 3 As shown, the pumping solenoid valve includes a sixth solenoid valve (DT10 corresponds to forward rotation, DT11 corresponds to reverse rotation). The power supply of the sixth solenoid valve (DT10, DT11) is controlled by the sixth branch switch (S8, S9), which can realize the forward and reverse rotation functions of the stirring blades in the hopper, corresponding to the forward and reverse pumps. Figure 4 As shown, when the emergency pumping function is realized, the opening and closing state of the sixth branch switch (S8, S9) can be adjusted by controlling the button switches "stirring forward" and "stirring reverse".

[0052] Optionally, the voltage regulator R1 is a knob-type potentiometer.

[0053] Specifically, the voltage regulator is a knob-type potentiometer, which is usually composed of a resistor and a movable brush. When the brush moves along the resistor, a resistance value or voltage that is related to the displacement is obtained at the output end, thereby realizing a variety of speed adjustments; Figure 4 As shown, by rotating the "engine speed" knob, the engine speed can be increased, driving the main oil pump to work and provide working pressure.

[0054] In this embodiment, by setting the voltage regulator as a knob-type potentiometer, various speed adjustments can be achieved.

[0055] Another embodiment of the utility model provides a concrete pump truck, comprising the above-mentioned emergency pumping control system.

[0056] Although the utility model is disclosed as above, the protection scope of the utility model is not limited thereto. Those skilled in the art may make various changes and modifications without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the protection scope of the utility model.

Claims

1. An emergency pumping control system, arranged in parallel with a controller output module, for emergency control after a controller output module fails, characterized in that: The invention comprises an emergency power supply and a voltage regulator (R1), wherein the emergency power supply is used to be connected to a speed control circuit of an engine, the voltage regulator (R1) is arranged between the emergency power supply and the speed control circuit, and the voltage regulator (R1) is used to adjust the voltage provided by the emergency power supply to adjust the speed of the engine.

2. The emergency pumping control system according to claim 1, characterized in that: It also includes solenoid valves, which include one or more of a first solenoid valve (DT0) corresponding to a main oil pump, a second solenoid valve (DT1) corresponding to a main overflow valve, a third solenoid valve (DT17) corresponding to an accumulator, a fourth solenoid valve (DT4, DT5) corresponding to a swing cylinder reversing module, a fifth solenoid valve (DT6, DT9) corresponding to a master cylinder reversing module, and a sixth solenoid valve (DT10, DT11) corresponding to a stirring module.

3. The emergency pumping control system according to claim 2, characterized in that: It also includes an emergency switch (S1), and the emergency power supply is used to connect with the speed control circuit and the solenoid valve when the emergency switch (S1) is closed.

4. The emergency pumping control system according to claim 3, characterized in that: The emergency switch (S1), the solenoid valve and the speed control circuit are connected in parallel, and a first power supply switch (K1) is respectively provided on the parallel branch where the solenoid valve and the speed control circuit are located. The solenoid valve is used to be energized when the emergency switch (S1) is closed, so as to control the first power supply switch (K1) to be closed.

5. The emergency pumping control system according to claim 3, characterized in that: It also includes a second power supply switch (K2), which is respectively provided between the solenoid valve and the controller output module and between the speed control circuit and the controller output module. The solenoid valve is used to be energized when the emergency switch (S1) is closed, so as to control the second power supply switch (K2) to be disconnected.

6. The emergency pumping control system according to claim 2, characterized in that: It also includes an emergency stop switch, which is connected in series with the emergency power supply, and is used to cut off the power supply of the emergency power supply to the speed control circuit and the solenoid valve.

7. The emergency pumping control system according to claim 2, characterized in that: The invention also includes branch switches, which include a first branch switch (S2) arranged between the emergency power supply and the first solenoid valve (DT0), a second branch switch (S3) arranged between the emergency power supply and the second solenoid valve (DT1), a third branch switch (S10) arranged between the emergency power supply and the third solenoid valve (DT17), a fourth branch switch (S4, S5) arranged between the emergency power supply and the fourth solenoid valve (DT4, DT5), a fifth branch switch (S6, S7) arranged between the emergency power supply and the fifth solenoid valve (DT6, DT9), and a sixth branch switch (S8, S9) arranged between the emergency power supply and the sixth solenoid valve (DT10, DT11).

8. The emergency pumping control system according to claim 1, characterized in that: The voltage regulator (R1) is a knob-type potentiometer.

9. The emergency pumping control system according to claim 1, characterized in that: It also includes one or more of a main oil pump, a main overflow valve, an accumulator, a swing cylinder reversing module, a main cylinder reversing module and a stirring module for connecting to the emergency power supply.

10. A concrete pump truck, characterized in that: The invention comprises the emergency pumping control system as claimed in any one of claims 1 to 9.

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