Engineering machinery

Abstract

The utility model discloses an engineering machine, and belongs to the technical field of mechanical control technologies. The engineering machinery comprises a switch assembly, a control assembly and at least two engines, the switch assembly is connected with the control assembly, and the control assembly is connected with each engine; the control assembly comprises a controller and an input device, and the input device is used for receiving selection information input by a user; wherein the selection information is used for identifying a target engine to be controlled; the switch assembly is used for transmitting a control instruction to the control assembly; wherein the control instruction comprises a power-on instruction, a starting instruction and a shutdown instruction; and the control assembly is used for controlling the target engine to start or stop according to the control instruction. The operation complexity of the engineering machinery can be reduced, and the control efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of mechanical control, in particular to an engineering machine. BACKGROUND

[0002] Engineering machines such as excavators, rotary drilling rigs and the like can be equipped with multiple engines to increase output power and thus support complex operation requirements.

[0003] In related technologies, a corresponding engine switch is often set for each engine, and when multiple engines need to be started or stopped, multiple engine switches need to be operated, which is a complex process and seriously affects the control efficiency of the engineering machine, and there is a certain safety hazard.

[0004] Therefore, how to reduce the operation complexity of the engineering machine and improve the control efficiency is a technical problem that needs to be solved by those skilled in the art at present. CONTENT OF THE UTILITY MODEL

[0005] The purpose of the present application is to provide an engineering machine that can reduce the operation complexity of the engineering machine and improve the control efficiency.

[0006] The present application provides an engineering machine, comprising: a switch assembly, a control assembly and at least two engines; the switch assembly is connected with the control assembly, and the control assembly is connected with each engine;

[0007] The control assembly comprises a controller and an input device, and the input device is used for receiving user input selection information; wherein the selection information is used to identify the target engine to be controlled;

[0008] The switch assembly is used for transmitting control instructions to the control assembly; wherein the control instructions include power-on instructions, start instructions and stop instructions;

[0009] The control assembly is used for controlling the target engine to start or stop according to the control instructions.

[0010] Further, the engineering machine comprises a first engine and a second engine, the first engine is provided with a first starting motor and a first electronic control unit, and the second engine is provided with a second starting motor and a second electronic control unit.

[0011] Further, the controller comprises a first power-on interface, a first control signal output interface, a second power-on interface and a second control signal output interface, the first power-on interface and the second power-on interface are used for outputting power-on signals, and the first control signal output interface and the second control signal output interface are used for outputting start signals;

[0012] The input device comprises a first double normally open contact switch and a second double normally open contact switch.

[0013] The first double normally open contact switch is used for controlling the first line and the second line to be simultaneously disconnected or conducted; wherein the first line is a line connecting the first power-on interface and the first electric control unit, and the second line is a line connecting the first control signal output interface and the second starting motor.

[0014] The second double normally open contact switch is used for controlling the third line and the fourth line to be simultaneously disconnected or conducted; wherein the third line is a line connecting the second power-on interface and the second electric control unit, and the fourth line is a line connecting the second control signal output interface and the second starting motor.

[0015] Further, the switch assembly comprises a one-key starting switch and an emergency stop switch connected with the control assembly respectively.

[0016] The one-key starting switch comprises a stop gear, a power-on gear and a starting gear.

[0017] The emergency stop switch is used for sending an emergency stop instruction to the control assembly when triggered, so that the control assembly controls all the engines to stop.

[0018] Further, the input device is an input device with a display screen.

[0019] The input device is used for displaying an engine selection interface through the display screen, so that the user inputs the selection information in the engine selection interface.

[0020] The input device is also used for transmitting the selection information to the controller through a bus.

[0021] Further, the electric control unit of each engine is connected with the control assembly through a bus, and the electric control unit is used for transmitting engine state information to the control assembly through the bus.

[0022] Further, the engine is provided with a starting motor and an electric control unit.

[0023] The controller is used for outputting a power-on signal to the electric control unit, so that the electric control unit enters a working state.

[0024] The starting motor is used for starting the corresponding engine after receiving the starting signal sent by the controller.

[0025] The electric control unit is used for controlling the engine to stop when detecting that the controller stops outputting the power-on signal.

[0026] Further, it also comprises:

[0027] A battery pack connected to the switch assembly, the controller, and the electronic control unit, respectively.

[0028] Furthermore, the switching assembly also includes:

[0029] Safety bar switches are connected to the safety bar and the control assembly, respectively.

[0030] Furthermore, the construction machinery mentioned is an excavator.

[0031] This application provides an engineering machinery component, comprising a switch assembly, a control assembly, and at least two engines. The control assembly includes a controller and an input device that can receive user-input selection information. The switch assembly can transmit control commands regarding the engines, such as power-on commands, start commands, and stop commands, to the control assembly. The control assembly can then control the start or stop of the engine selected by the user. This process eliminates the need for the user to use multiple switches to control each engine separately; instead, it controls the corresponding engine to start or stop based on user input and the control commands transmitted by the switch assembly. With this solution, after the user selects the target engine, they can achieve one-button control of the engine using only a simple switch assembly. Therefore, this application reduces the operational complexity of engineering machinery and improves control efficiency. Attached Figure Description

[0032] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0033] Figure 1 This is a schematic diagram of the structure of an engineering machine provided in an embodiment of this application;

[0034] Figure 2 This is a schematic diagram of the structure of the first type of engineering machinery provided in the embodiments of this application;

[0035] Figure 3 This is a schematic diagram of the structure of the second type of engineering machinery provided in the embodiments of this application;

[0036] Figure 4 A schematic diagram of the engine control principle of an excavator provided in an embodiment of this application;

[0037] Figure 5 This is a schematic diagram of an instrument interface provided in an embodiment of this application. Detailed Implementation

[0038] The core of this application is to provide a method for reducing the operational complexity of construction machinery and improving control efficiency.

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0040] Please see below. Figure 1 , Figure 1 This is a schematic diagram of the structure of an engineering machine provided in an embodiment of this application. Figure 1 As shown, the engineering machinery includes: a switch assembly, a control assembly, and at least two engines; the switch assembly is connected to the control assembly, and the control assembly is connected to each of the engines.

[0041] The control component includes a controller and an input device, the input device being used to receive selection information input by a user; wherein the selection information is used to identify the target engine to be controlled.

[0042] The aforementioned input components can be human-computer interaction devices (e.g., input devices with displays) or physical switches. Users can input selection information through human-computer interaction devices; users can also trigger physical switches, and the electrical signal generated after the physical switch is triggered represents the user's selection information. For example, if there are two physical switches, when both switches are triggered, the user inputs the selection information of selecting all engines as the target engines to be controlled; when neither switch is triggered, the user does not input any selection information; when neither switch is triggered, a subset of engines is selected as the target engines to be controlled.

[0043] The switching component is used to transmit control commands to the control component; wherein the control commands include power-on commands, start commands, and stop commands. The switching component can have multiple positions, such as a power-on position, a start position, and a stop position. When the user activates a position of the switching component, they can transmit the corresponding control command to the control component. The control command transmitted by the switching component to the control component in a single transmission can be any one of a power-on command, a start command, or a stop command.

[0044] The control component is used to control the starting or stopping of the target engine according to the control commands. The technology of controlling engine starting or stopping according to control commands is very mature. As one feasible implementation, the user selects the target engine and sends control commands (such as power on, start, or stop) via an input device (such as a switch or touchscreen). These control commands are converted into electrical signals and transmitted to the controller via a communication network (such as a CAN bus). After parsing these signals, the controller generates corresponding control signals and operates the target engine through actuators (such as relays or solenoid valves). As another feasible implementation, the control component may have an interface connected to each engine. In this embodiment, the interface corresponding to the target engine can be controlled according to the control commands to output corresponding signals (such as power on signal, start signal, or stop signal).

[0045] The construction machinery provided in this embodiment includes a switch assembly, a control assembly, and at least two engines. The control assembly includes a controller and an input device that can receive user-input selection information. The switch assembly can transmit control commands regarding the engines to the control assembly, such as power-on commands, start commands, and stop commands. The control assembly can control the start or stop of the engine selected by the user based on the control assembly's input. This process eliminates the need for the user to use multiple switches to control the start and stop of each engine separately; instead, it controls the corresponding engine to start or stop based on user input and the control commands transmitted by the switch assembly. Through this solution, after the user selects the target engine, the user can achieve one-button control of the engine using only a simple switch assembly. Therefore, this embodiment can reduce the operational complexity of construction machinery and improve control efficiency.

[0046] As for Figure 1 As further described in the corresponding embodiments, each engine contains a starter motor and an electronic control unit (ECU). In the case of construction machinery including a first engine and a second engine, the first engine is equipped with a first starter motor and a first ECU, and the second engine is equipped with a second starter motor and a second ECU.

[0047] A starting motor is an electric motor used to provide the necessary rotational torque when starting an internal combustion engine. The main function of the starting motor is to use electrical energy to drive the engine crankshaft to rotate during the initial stages of engine startup, enabling the engine to reach sufficient speed for starting.

[0048] The controller includes a first power-on interface, a first control signal output interface, a second power-on interface, and a second control signal output interface. The first power-on interface and the second power-on interface are used to output a power-on signal, and the first control signal output interface and the second control signal output interface are used to output a start signal.

[0049] The input device includes a first double normally open contact switch and a second double normally open contact switch. The first double normally open contact switch is used to control the simultaneous disconnection or connection of the first and second lines; wherein the first line is the line connecting the first power-on interface to the first electronic control unit, and the second line is the line connecting the first control signal output interface to the first starter motor. The second double normally open contact switch is used to control the simultaneous disconnection or connection of the third and fourth lines; wherein the third line is the line connecting the second power-on interface to the second electronic control unit, and the fourth line is the line connecting the second control signal output interface to the second starter motor.

[0050] Please see Figure 2 , Figure 2 This is a schematic diagram of the structure of a first type of engineering machinery provided in the embodiments of this application. The diagram shows a battery pack, a one-button start switch S1, an emergency stop switch S2, a safety bar switch S3, a controller C (i.e., the whole machine controller), an engine lock-up switch A (i.e., the first double normally open contact switch), an engine lock-up switch B (i.e., the second double normally open contact switch), a starter relay K1, a starter relay K2, a starter motor MA, a starter motor MB, a display D, an engine electronic control unit A, an engine electronic control unit B, and a CAN (Controller Area Network) bus.

[0051] The one-button start switch includes a stop position (OFF), a power position (ON), and a start position (START). Interface 110 represents the interface for sending a stop signal, 120 represents the interface for sending a power signal, and 130 represents the interface for sending a start signal. In controller C, interface 210 represents the power interface, interface 211 represents the full lever signal input interface, interface 212 represents the emergency stop signal input interface, interface 213 represents the key switch power-on signal input interface, interface 214 represents the key switch start signal input interface, interface 215 represents the bus signal interface, interface 216 represents the display screen power-on output interface, interface 217 represents the engine electronic control unit A power-on output interface, interface 218 represents the engine electronic control unit B power-on output interface, interface 219 represents the starter motor MA start control signal output interface, interface 220 represents the starter motor MB start control signal output interface, and interface 231 represents the ground interface.

[0052] In the display D, 310 represents the bus signal interface, 311 represents the power-on signal interface, 312 represents the power interface, and 313 represents the ground interface.

[0053] In engine electronic control unit A, 410 represents the bus signal interface, 411 represents the power-on signal interface, 412 represents the power interface, and 413 represents the ground interface.

[0054] In engine electronic control unit B, 510 represents the bus signal interface, 511 represents the power-on signal interface, 512 represents the power interface, and 513 represents the ground interface.

[0055] In this embodiment, by setting two engine lock-up switches to control the power-on signal and start signal of the two engines respectively, the function of starting and stopping one engine individually can be achieved.

[0056] As for Figure 1 In a further description of the corresponding embodiment, the aforementioned switch assembly includes a one-button start switch and an emergency stop switch, both connected to the control assembly. The one-button start switch includes a stop position, an power-on position, and a start position. When the stop position is triggered, the one-button start switch transmits a stop command to the controller of the control assembly. When the power-on position is triggered, the one-button start switch transmits a power-on command to the controller of the control assembly. When the start position is triggered, the one-button start switch transmits a start command to the controller of the control assembly. The emergency stop switch is used to send an emergency stop command to the control assembly when triggered, so that the control assembly can control the shutdown of all the engines.

[0057] As one possible implementation, the input device described above is an input device with a display screen (such as an instrument panel). The input device is used to display an engine selection interface on the display screen, so that the user can input the selection information in the engine selection interface; the input device is also used to transmit the selection information to the controller via a bus.

[0058] As one possible implementation, each of the engine's electronic control units is connected to the control component via a bus, and the electronic control unit is used to transmit engine status information to the control component via the bus.

[0059] Please see Figure 3 , Figure 3 This is a schematic diagram of the structure of a second type of engineering machinery provided in the embodiments of this application. The diagram shows a battery pack, a one-button start switch S1, an emergency stop switch S2, a safety bar switch S3, a controller C (i.e., the whole machine controller), a starter relay K1, a starter relay K2, a starter motor MA, a starter motor MB, a display D, an engine electronic control unit A, an engine electronic control unit B, and a CAN (Controller Area Network) bus.

[0060] The one-button start switch includes a stop position (OFF), a power position (ON), and a start position (START). Interface 110 represents the interface for sending a stop signal, 120 represents the interface for sending a power signal, and 130 represents the interface for sending a start signal. In controller C, interface 210 represents the power interface, interface 211 represents the full lever signal input interface, interface 212 represents the emergency stop signal input interface, interface 213 represents the key switch power-on signal input interface, interface 214 represents the key switch start signal input interface, interface 215 represents the bus signal interface, interface 216 represents the display power-on output interface, interface 217 represents the engine electronic control unit A power-on output interface, interface 218 represents the engine electronic control unit B power-on output interface, interface 219 represents the starter motor MA start control signal output interface, interface 220 represents the starter motor MB start control signal output interface, and interface 231 represents the ground interface. In display D, 310 represents the bus signal interface, 311 represents the power-on signal interface, 312 represents the power interface, and 313 represents the ground interface. In engine control unit A, 410 represents the bus signal interface, 411 represents the power-on signal interface, 412 represents the power interface, and 413 represents the ground interface. In engine control unit B, 510 represents the bus signal interface, 511 represents the power-on signal interface, 512 represents the power interface, and 513 represents the ground interface. In this embodiment, by setting the engine that needs to be started or stopped on the display, the function of starting and stopping one engine individually is achieved.

[0061] As a feasible implementation, the engine is equipped with a starter motor and an electronic control unit; the controller is used to output a power-on signal to the electronic control unit so that the electronic control unit enters the working state; the starter motor is used to start the corresponding engine after receiving the start signal sent by the controller; the electronic control unit is used to control the engine to stop when it detects that the controller stops outputting the power-on signal.

[0062] As a possible implementation, the above-mentioned engineering machinery may also include a battery pack connected to the switch assembly, the controller and the electronic control unit respectively.

[0063] As one possible implementation, the above-described switch assembly also includes a safety bar switch that is connected to both the safety bar and the control assembly.

[0064] As a feasible implementation method, the aforementioned engineering machinery includes excavators, rotary drilling rigs, etc.

[0065] The process described in the above embodiments is illustrated below using an excavator in a practical application.

[0066] Currently, some excavators use large-tonnage dual engines. The start and stop control method for dual engines is as follows: two starter key switches are used to control the start and stop of the two engines respectively. When starting, one engine must be started first and then the other engine is started. The same applies when stopping. For some large engines, the delayed shutdown requirement also requires manual control of the starter key switch to stop the machine. This is not only inconvenient but also poses a risk of engine damage due to misoperation.

[0067] Please see Figure 4 , Figure 4 This is a schematic diagram of the engine control principle of an excavator provided in an embodiment of this application. The diagram shows: a one-button start switch, an emergency stop switch, a controller, engine 1, engine 2, instruments, engine electronic control unit 1, and engine electronic control unit 2. The one-button start switch includes a stop position, a power-on position, and a start position. The controller may include an emergency stop signal interface, a power-on signal interface, a start signal interface, a bus 1 interface, a bus 2 interface, a power-on signal 1 interface, a power-on signal 2 interface, a power-on signal 3 interface, a start signal 1 interface, and a start signal 2 interface. Engine 1 includes a starter motor 1 and engine electronic control unit 1, and engine 2 includes a starter motor 2 and engine electronic control unit 2. Engine electronic control unit 1 includes a power-on signal interface and a bus 1 interface, engine electronic control unit 2 includes a power-on signal interface and a bus 2 interface, and the instruments include a power-on signal interface, a bus 1 interface, and a bus 2 interface.

[0068] When the one-button start switch is turned up to the high position, the controller receives a power-on signal. The controller outputs power-on signal 1 to engine control unit 1, power-on signal 2 to engine control unit 2, and power-on signal 3 to the instrument cluster. It also outputs start signal 1 to control starter motor 1 and starter signal 2 to control starter motor 2. The controller communicates with the instrument cluster and engine control unit 1 via bus 1 and bus 2. When the one-button start switch returns to the stop position, the controller's power-on signal input is de-energized. Power-on signal 1 stops outputting, engine control unit 1 stops working, and engine 1 stops working. Power-on signal 2 stops outputting, engine control unit 2 stops working, and engine 2 stops working. Power-on signal 3 stops outputting, and the instrument cluster stops working. When an emergency stop signal is input, the controller immediately stops power-on signal 1 and power-on signal 2, causing engine 1 and engine 2 to stop running.

[0069] Please see Figure 5 , Figure 5This is a schematic diagram of an instrument panel interface provided in an embodiment of this application. Engine starting defaults to simultaneous start and stop of both engines. When single-engine start and stop are required, the user enters the engine start / stop selection interface of the instrument panel and selects the engine to be started or stopped. The instrument panel sends the current selection to the controller via bus 1 or 2. The controller controls the corresponding start signal and power-on signal to start and stop the corresponding engine. In the engine start / stop selection interface, the engine start options include engine 1 and engine 2, and the engine stop options also include engine 1 and engine 2.

[0070] Depending on the circumstances, this embodiment can divide engine starting into two modes: Mode 1: dual-start mode and Mode 2: single-start mode; and engine stopping into two modes: Mode 1: normal shutdown mode and Mode 2: emergency shutdown mode.

[0071] In dual-start mode, when the one-button start switch is switched to the power-on position, the controller outputs power-on signals 1, 2, and 3, at which point the instrument cluster, electronic control unit 1, and electronic control unit 2 enter operating mode. Next, pressing the one-button start switch to the start position, the controller outputs start signal 1 and start signal 2. If both engines 1 and 2 start successfully, the process ends. If neither engine 1 nor 2 starts successfully, the one-button start switch needs to be pressed again to attempt starting again. If engine 1 starts successfully but engine 2 fails to start, the system will prompt "Engine 2 failed to start, please press the start switch again." Upon receiving the start signal again, the controller only outputs start signal 2, repeating this process until engine 2 starts successfully. Conversely, if engine 2 starts successfully but engine 1 fails to start, the system will prompt "Engine 1 failed to start, please press the start switch again." Upon receiving the start signal again, the controller only outputs start signal 1, repeating this process until engine 1 starts successfully. Through the above steps, the system can ensure that each engine can complete the starting process independently and reliably.

[0072] In single-start mode, when the one-button start switch is switched to the power-on position, the controller outputs power-on signal 1, power-on signal 2, and power-on signal 3. After selecting the engine to be started on the instrument panel's engine start / stop interface, the instrument panel sends the selection result to the controller. Next, press the one-button start switch to the start position. At this time, the controller only outputs the start signal corresponding to the engine selected on the instrument panel. If the selected engine starts successfully, the entire process ends. If starting is unsuccessful, the one-button start switch needs to be pressed to the start position again, and this process needs to be repeated until the engine starts successfully. Through the above steps, the system can ensure that the selected engine can independently and reliably complete the starting process.

[0073] In normal shutdown mode, when the one-button start switch is switched to the stop position, the controller will stop outputting power-on signals 1, 2, and 3. At this time, engines 1 and 2, as well as the instruments, will stop running.

[0074] In emergency stop mode, if the controller receives an emergency stop signal from the emergency stop switch during engine operation, the controller will immediately stop the output of power-on signals 1 and 2, thereby stopping the engine operation.

[0075] Due to the complexity of the situation, it is impossible to list and elaborate on them all. Those skilled in the art should realize that there are many examples based on the basic principles provided in this application and in combination with actual situations. Without sufficient creative effort, they should all be within the scope of protection of this application.

[0076] The various embodiments in the specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0077] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the solution and core ideas of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of the claims of this application.

Claims

1. An engineering machinery, characterized in that, include: A switching assembly, a control assembly, and at least two engines; the switching assembly is connected to the control assembly, and the control assembly is connected to each of the engines; The control component includes a controller and an input device, the input device being used to receive selection information input by a user; wherein the selection information is used to identify the target engine to be controlled; The switching assembly is used to transmit control commands to the control assembly; wherein the control commands include power-on commands, start commands, and stop commands. The control component is used to control the target engine to start or stop according to the control command.

2. The engineering machinery according to claim 1, characterized in that, The construction machinery includes a first engine and a second engine. The first engine is equipped with a first starter motor and a first electronic control unit, and the second engine is equipped with a second starter motor and a second electronic control unit.

3. The engineering machinery according to claim 2, characterized in that, The controller includes a first power-on interface, a first control signal output interface, a second power-on interface, and a second control signal output interface. The first power-on interface and the second power-on interface are used to output a power-on signal, and the first control signal output interface and the second control signal output interface are used to output a start signal. The input device includes a first double normally open contact switch and a second double normally open contact switch; The first double normally open contact switch is used to control the first line and the second line to be simultaneously disconnected or connected; wherein, the first line is the line connected to the first power-on interface and the first electronic control unit, and the second line is the line connected to the first control signal output interface and the first starter motor. The second double normally open contact switch is used to control the third and fourth lines to be simultaneously disconnected or connected; wherein, the third line is the line connecting the second power-on interface to the second electronic control unit, and the fourth line is the line connecting the second control signal output interface to the second starter motor.

4. The engineering machinery according to claim 1, characterized in that, The switching assembly includes a one-button start switch and an emergency stop switch, which are respectively connected to the control assembly. The one-button start switch includes a stop position, a power-on position, and a start position; The emergency stop switch is used to send an emergency stop command to the control component when triggered, so that the control component can control all the engines to stop.

5. The engineering machinery according to claim 1, characterized in that, The input device is an input device with a display screen; The input device is used to display an engine selection interface on the display screen so that the user can input the selection information in the engine selection interface; The input device is also used to transmit the selection information to the controller via a bus.

6. The engineering machinery according to claim 1, characterized in that, Each of the engine's electronic control units is connected to the control component via a bus, and the electronic control unit is used to transmit engine status information to the control component via the bus.

7. The engineering machinery according to claim 1, characterized in that, The engine is equipped with a starter motor and an electronic control unit; The controller is used to output a power-on signal to the electronic control unit so that the electronic control unit enters the working state; The starter motor is used to start the corresponding engine after receiving a start signal from the controller; The electronic control unit is used to control the engine to stop when it detects that the controller has stopped outputting the power-on signal.

8. The engineering machinery according to claim 7, characterized in that, Also includes: A battery pack connected to the switch assembly, the controller, and the electronic control unit, respectively.

9. The engineering machinery according to claim 1, characterized in that, The switching assembly further includes: Safety bar switches are connected to the safety bar and the control assembly, respectively.

10. The engineering machinery according to claim 1, characterized in that, The construction machinery in question is an excavator.

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