Control system for working machine and working machine

Abstract

The utility model relates to the field of mechanical control systems, and discloses a control system for an operation machine and the operation machine, the control system comprises a vehicle control unit, an emergency stop controller, an electric power controller and an engine controller, the vehicle control unit comprises a vehicle locking signal main output end; the emergency stop controller communicates with the vehicle control unit and is used for sending a vehicle locking signal to the vehicle control unit; the power controller comprises a first vehicle locking signal input end, a first vehicle locking signal output end and a power-on signal output end, the first vehicle locking signal input end is electrically connected with the vehicle locking signal main output end, and the power-on signal output end is used for being electrically connected with a whole vehicle power supply system; the engine controller comprises a second vehicle locking signal input end electrically connected with the first vehicle locking signal output end. According to the control system for the operation machine and the operation machine, the power supply of the whole vehicle can be cut off while the engine is emergently braked, and the dual-protection effect is achieved.

Description

Technical Field

[0001] This application belongs to the technical field of construction machinery, and particularly relates to a control system for a working machine and a working machine. Background Art

[0002] When a working machine such as an excavator has a fault such as a fuel pipeline or a hydraulic oil pipeline leakage, the spark generated by the damaged wire harness near the oil circuit is very likely to ignite the oil circuit and cause a fire, resulting in great economic losses and personal safety accidents. Therefore, it is necessary to be able to stop the machine urgently when a fault occurs in the excavator. Most of the existing emergency stop strategies for excavators are to stop the engine urgently, but the vehicle power supply cannot be disconnected. In this way, the vehicle is still powered on in case of an emergency, which poses a safety hazard. Summary of the Utility Model

[0003] In view of the above-mentioned at least one defect or deficiency of the prior art, this application provides a control system for a working machine and a working machine, which can disconnect the vehicle power supply while urgently stopping the engine, playing a dual protection role.

[0004] To achieve the above object, on the one hand, this application provides a control system for a working machine, including:

[0005] A vehicle controller, including a main output terminal for a vehicle locking signal;

[0006] An emergency stop controller, communicating with the vehicle controller and used for sending a vehicle locking signal to the vehicle controller;

[0007] A power controller, including a first vehicle locking signal input terminal, a first vehicle locking signal output terminal, and a power-on signal output terminal. The first vehicle locking signal input terminal is electrically connected to the main output terminal of the vehicle locking signal, and the power-on signal output terminal is used for electrical connection with the vehicle power supply system; and

[0008] An engine controller, including a second vehicle locking signal input terminal electrically connected to the first vehicle locking signal output terminal.

[0009] In some embodiments, the power controller includes a start signal output terminal, and the control system further includes a start control module. The start control module includes a normally open relay, a start motor, and a start power supply. The coil control terminal of the normally open relay is electrically connected to the start signal output terminal, and one end of the normally open switch of the normally open relay is connected to the start power supply and the other end is connected to the start motor.

[0010] In some embodiments, the start control module communicates with the vehicle controller and includes a one-key start switch for sending a start signal to the vehicle controller.

[0011] In some embodiments, the control system includes a control panel electrically connected to the power controller, and the one-key start switch is disposed on the control panel.

[0012] In some embodiments, the control panel is further provided with an indicator light and an indication signal input terminal, and the power controller further includes an indication signal output terminal, and the indication signal output terminal is electrically connected to the indication signal input terminal so that the power controller can control the indicator light to work.

[0013] In some embodiments, the control panel is further provided with an ACC switch and an ACC signal output terminal, and the power controller further includes an ACC signal input terminal electrically connected to the ACC signal output terminal.

[0014] In some embodiments, the emergency stop controller includes a wireless receiving host and a wireless remote controller, and the wireless remote controller communicates with the wireless receiving host and is used to control the wireless receiving host to generate the vehicle locking signal.

[0015] In some embodiments, the wireless remote controller is provided with an emergency stop button that can be pressed and rotated to reset, and when the emergency stop button is pressed, it can trigger the wireless receiving host to generate the vehicle locking signal.

[0016] In some embodiments, the control system further includes a system power supply module for supplying power to the vehicle controller, the emergency stop controller, the power controller, and the engine controller respectively.

[0017] The second aspect of the present application provides a work machine, including the control system for the work machine described above.

[0018] Through the above technical solution, when an emergency occurs, by operating the emergency stop controller, a vehicle locking signal can be sent to the vehicle controller. After receiving the vehicle locking signal, the vehicle controller forwards the vehicle locking signal to the power controller through the main output terminal of the vehicle locking signal. After receiving the vehicle locking signal, on the one hand, the power controller forwards the vehicle locking signal to the engine controller through the first vehicle locking signal output terminal, so that the engine controller can immediately control the engine to turn off. On the other hand, the power controller disconnects the communication with the vehicle power supply system, so that the vehicle power supply system stops supplying power to the vehicle equipment, realizing the synchronous shutdown of the engine and the vehicle power supply, and ensuring the safety of the vehicle and personnel.

[0019] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent specific embodiment part. Description of the Drawings

[0020] The accompanying drawings are used to provide a further understanding of the embodiments of the present application and form a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present application, but do not constitute a limitation to the embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the structures shown in these drawings. In the drawings:

[0021] Figure 1 It is a schematic diagram of a control system for a work machine in a specific embodiment of the present application.

[0022] Description of the reference numerals in the drawings

[0023] 1 Vehicle controller 2 Emergency stop controller

[0024] 3 Power controller 4 Engine controller

[0025] 5 Normally open relay 6 Starter motor

[0026] 7 One-key start switch 8 Control panel

[0027] 9 Vehicle power supply system 201 Wireless receiving host

[0028] 202 Wireless remote control 501 Normally open switch

[0029] 801 Indicator light 802 ACC switch

[0030] 2021 Emergency stop button 1a Main output terminal of the vehicle locking signal

[0031] 3a First vehicle locking signal input terminal 3b First vehicle locking signal output terminal

[0032] 3c Power-on signal output terminal 3d Start signal output terminal

[0033] 3e Indication signal output terminal 3f ACC signal input terminal

[0034] 4a Second vehicle locking signal input terminal 5a Coil control terminal

[0035] 8a Indication signal input terminal 8b ACC signal output terminal Specific embodiments

[0036] The following is a detailed description of the specific embodiments of the present application with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present application and do not limit the present application.

[0037] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with exemplary embodiments.

[0038] AsFigure 1 As shown in Figure 1 , the first exemplary embodiment of the present application provides a control system for a work machine. The control system includes a vehicle controller 1, an emergency stop controller 2, a power controller 3, and an engine controller 4. Among them, the vehicle controller 1 includes a main output terminal 1a for the vehicle locking signal; the emergency stop controller 2 communicates with the vehicle controller 1 and is configured to send a vehicle locking signal to the vehicle controller 1; the power controller 3 includes a first input terminal 3a for the vehicle locking signal, a first output terminal 3b for the vehicle locking signal, and a power-on signal output terminal 3c. The first input terminal 3a for the vehicle locking signal is electrically connected to the main output terminal 1a for the vehicle locking signal, so that the power controller 3 can receive the vehicle locking signal forwarded by the vehicle controller 1. The power-on signal output terminal 3c is configured to be electrically connected to the vehicle power supply system 9, so as to be able to send a power-on signal to the vehicle power supply system 9 to control the vehicle power supply system 9 to supply power to the vehicle; the engine controller 4 includes a second input terminal 4a for the vehicle locking signal electrically connected to the first output terminal 3b for the vehicle locking signal, so that the engine controller 4 can receive the vehicle locking signal forwarded by the power controller 3.

[0039] Thus, when an emergency occurs, the operator can send a vehicle locking signal to the vehicle controller 1 by operating the emergency stop controller 2. After receiving the vehicle locking signal, the vehicle controller 1 forwards the vehicle locking signal to the power controller 3 through the main output terminal 1a for the vehicle locking signal. After receiving the vehicle locking signal, on the one hand, the power controller 3 can forward the vehicle locking signal to the engine controller 4 through the first output terminal 3b for the vehicle locking signal, so that the engine controller 4 can immediately control the engine to shut down. On the other hand, the power controller 3 can disconnect the communication with the vehicle power supply system 9, so that the vehicle power supply system 9 stops supplying power to the vehicle equipment, realizing the synchronous shutdown of the engine and the vehicle power supply, and ensuring the safety of the vehicle and personnel.

[0040] It should be noted that the emergency stop controller 2 can communicate with the vehicle controller 1 through a wired connection or a wireless connection. In this embodiment, CAN bus can be used to realize the communication between the two. The main output terminal 1a for the vehicle locking signal and the first input terminal 3a for the vehicle locking signal, the first output terminal 3b for the vehicle locking signal and the second input terminal 4a for the vehicle locking signal can all be connected by hard wires to ensure signal stability.

[0041] Furthermore, the power controller 3 can also control the ignition start of the engine. Specifically, referring to Figure 1 , the power controller 3 includes a start signal output terminal 3d. The control system further includes a start control module. The start control module includes a normally open relay 5, a starting motor 6, and a starting power supply (not shown in the drawings). The coil control terminal 5a of the normally open relay 5 is electrically connected to the start signal output terminal 3d. One end of the normally open switch 501 of the normally open relay 5 is connected to the starting power supply and the other end is connected to the starting motor 6. Figure 1

[0042] ​Thus, when the engine is started, the power controller 3 can input a certain current to the coil control terminal 5a through the start signal output terminal 3d, thereby controlling the normally open switch 501 to close, so that the starter motor 6 and the starter power supply are energized, thereby driving the engine to start. The transmission structure and transmission mode between the starter motor 6 and the engine are well known to those skilled in the art, and do not belong to the core improvement part of the present application, so they are not described here.

[0043] The key point is that when the power controller 3 continues to receive the vehicle locking signal, the power controller 3 never inputs the starting current to the coil control terminal 5a, so that the starter motor 6 remains in the off state, thereby preventing the engine from starting in an emergency and ensuring operational safety.

[0044] In one embodiment, the start control module communicates with the vehicle controller 1 and includes a one-button start switch 7 for sending a start signal to the vehicle controller 1. Specifically, the one-button start switch 7 can be an operation key for starting the engine. When the operator touches the one-button start switch 7, the start control module can send a start signal to the vehicle controller 1. After the vehicle controller 1 receives the start signal, it can send a power-on signal to the power controller 3. When the power controller 3 receives the power-on signal, it can control the engine to start according to the above-mentioned start steps.

[0045] In order to prevent the operator from accidentally touching the one-touch start switch 7 and starting the engine in an emergency, when the vehicle controller 1 receives the start signal, the vehicle controller 1 will pre-determine whether it is receiving a vehicle lock signal from the emergency stop controller 2. If the emergency stop controller 2 is continuously sending a vehicle lock signal, the vehicle controller 1 will not send a power-on signal to the power controller 3. Therefore, even if the operator accidentally touches the one-touch start switch 7, the power controller 3 will not input current to the normally open relay 5, and the engine can always remain in the off state until the vehicle lock signal is released, that is, the vehicle controller 1 no longer receives the vehicle lock signal.

[0046] In this embodiment, refer to Figure 1 The control system includes a control panel 8 electrically connected to the power controller 3, and a one-button start switch 7 is arranged on the control panel 8. Specifically, the control panel 8 can be arranged in the cab, so that the driver or other operators can conveniently perform touch control.

[0047] Furthermore, the control panel 8 is also provided with an indicator light 801 and an indication signal input terminal 8a, and the power controller 3 also includes an indication signal output terminal 3e, and the indication signal output terminal 3e is electrically connected to the indication signal input terminal 8a so that the power controller 3 can control the indicator light 801 to work. For example, the control panel 8 is provided with a green light and a red light. When the power controller 3 receives a vehicle locking signal, the red light working signal can be input to the indication signal input terminal 8a through the indication signal output terminal 3e, so that the control panel 8 can be controlled to turn on the red light and turn off the green light to indicate an early warning; when the vehicle locking signal is released, the power controller 3 can input a green light working signal to the indication signal input terminal 8a through the indication signal output terminal 3e, so that the control panel 8 can be controlled to turn on the green light and turn off the green light to indicate that the vehicle is normal.

[0048] In one embodiment, the control panel 8 may also be provided with an ACC switch 802 and an ACC signal output terminal 8b, and the power controller 3 may further include an ACC signal input terminal 3f electrically connected to the ACC signal output terminal 8b. It is understandable that the ACC switch (Accessory, i.e., the accessory or auxiliary equipment mode of the vehicle) is a part of the ignition switch, and when the vehicle switch is in the ACC position, some of the electrical equipment of the vehicle can be powered on, but other parts of the vehicle are not powered on, and the engine will not start.

[0049] Therefore, when the ACC switch is triggered, the control panel 8 can send a device power supply signal to the power controller 3. After receiving the device power supply signal, the power controller 3 can communicate with the vehicle power supply system 9, so that the vehicle power supply system 9 supplies power to the vehicle equipment. Of course, when the power controller 3 receives a vehicle lock signal, even if the operator turns on the ACC switch, the power controller 3 will not send a power supply signal to the vehicle power supply system 9, effectively preventing danger after the vehicle is powered on.

[0050] In one embodiment, referring to Figure 1 The emergency stop controller 2 includes a wireless receiving host 201 and a wireless remote controller 202. The wireless remote controller 202 communicates wirelessly with the wireless receiving host 201, so that when the operator operates the wireless remote controller 202, the wireless receiving host 201 can be controlled to generate a vehicle locking signal, thereby realizing remote control of engine braking and vehicle power failure. In an emergency, an operator at a remote location can also control the engine braking and vehicle power failure through the wireless remote controller 202, thereby improving operational safety and timeliness.

[0051] In this embodiment, the wireless remote controller 202 may be provided with an emergency stop button 2021 that can be pressed and rotated to reset. The emergency stop button 2021 can trigger the wireless receiving host 201 to generate a car lock signal when pressed. When the car lock signal needs to be released, the emergency stop button 2021 can be rotated to reset and control the wireless remote controller 202 to stop sending the car lock signal to the wireless receiving host 201. In some other embodiments, the emergency stop button 2021 can also be set as an elastic pressing button, that is, each time the emergency stop button 2021 is pressed, the wireless remote controller 202 can send a signal to the wireless receiving host 201, and the previous pressing can control the wireless receiving host 201 to send a car lock signal, and the next pressing can control the wireless receiving host 201 to stop sending a car lock signal. The specific setting can be based on actual use requirements, and this application does not limit the triggering method of the wireless remote controller 202.

[0052] In one embodiment, the control system of the present application further includes a system power supply module (not shown in the drawings), such as a DC power supply module, for respectively supplying power to the vehicle controller 1, the emergency stop controller 2, the power controller 3, and the engine controller 4. By setting the system power supply module to supply power to the control system of the present application separately, the control system can still work normally when the vehicle is powered off, so that the engine start control and the vehicle power supply can be restored when the vehicle lock signal is released.

[0053] The second exemplary embodiment of the present application provides a working machine, the excavator including the control system for the working machine described above. Obviously, the working machine has all the technical features brought by the control system described above, so they will not be described in detail here.

[0054] In the description of the present application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present application, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0055] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0056] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0057] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A control system for a work machine, characterized in that, Comprising: A vehicle controller (1), including a main output terminal (1a) for a vehicle locking signal; An emergency stop controller (2), communicating with the vehicle controller (1) and configured to send a vehicle locking signal to the vehicle controller (1); A power controller (3), including a first vehicle locking signal input terminal (3a), a first vehicle locking signal output terminal (3b), and a power-on signal output terminal (3c), where the first vehicle locking signal input terminal (3a) is electrically connected to the main output terminal (1a) of the vehicle locking signal, and the power-on signal output terminal (3c) is configured to be electrically connected to a vehicle power supply system (9); and An engine controller (4), including a second vehicle locking signal input terminal (4a) electrically connected to the first vehicle locking signal output terminal (3b).

2. The control system for a work machine according to claim 1, wherein, The power controller (3) includes a start signal output terminal (3d), the control system further includes a start control module, the start control module includes a normally open relay (5), a start motor (6), and a start power supply, a coil control terminal (5a) of the normally open relay (5) is electrically connected to the start signal output terminal (3d), and one end of a normally open switch (501) of the normally open relay (5) is connected to the start power supply and the other end is connected to the start motor (6).

3. The control system for a work machine according to claim 2, wherein The start control module communicates with the vehicle controller (1) and includes a one-key start switch (7) configured to send a start signal to the vehicle controller (1).

4. The control system for a work machine according to claim 3, characterized in that, The control system includes a control panel (8) electrically connected to the power controller (3), and the one-key start switch (7) is disposed on the control panel (8).

5. The control system for a work machine according to claim 4, characterized in that, The control panel (8) further has an indicator light (801) and an indication signal input terminal (8a), the power controller (3) further includes an indication signal output terminal (3e), and the indication signal output terminal (3e) is electrically connected to the indication signal input terminal (8a) so that the power controller (3) can control the operation of the indicator light (801).

6. The control system for a work machine according to claim 4, characterized in that, The control panel (8) further has an ACC switch (802) and an ACC signal output terminal (8b), the power controller (3) further includes an ACC signal input terminal (3f) electrically connected to the ACC signal output terminal (8b).

7. The control system for a work machine according to claim 1, wherein, The emergency stop controller (2) includes a wireless receiving host (201) and a wireless remote controller (202), the wireless remote controller (202) communicates with the wireless receiving host (201) and is configured to control the wireless receiving host (201) to generate the vehicle locking signal.

8. The control system for a work machine according to claim 7, wherein, The wireless remote controller (202) is provided with an emergency stop button (2021) that can be pressed and rotated to reset, and the emergency stop button (2021) can trigger the wireless receiving host (201) to generate the vehicle locking signal in a pressed state.

9. The control system for a work machine according to any one of claims 1 to 8, characterized in that, The control system further includes a system power supply module for supplying power to the vehicle controller (1), the emergency stop controller (2), the power controller (3), and the engine controller (4) respectively.

10. An operating machine, characterized in that, Including the control system for a work machine according to any one of claims 1 to 9.

Images