Accelerator control switching circuit of loading excavator
By electrically connecting the electronic throttle and fixed throttle to the engine ECU controller of the excavator loader, the existing throttle control methods are solved, and more efficient and precise throttle control is achieved.
Patent Information
- Application Number
- CN202420689463.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-07
- Publication Date
- 2025-04-15
- Estimated Expiration
- 2034-04-07
AI Technical Summary
The existing excavator throttle control methods of excavator loaders have problems such as cumbersome operation and low control accuracy, which is difficult to meet the requirements of modern engineering construction for work efficiency and accuracy.
A throttle control switching circuit for loading excavator is designed. By electrically connecting the electronic throttle of the loading foot pedal and the excavator knob to the engine ECU controller, the voltage value of the electrical signal is used to achieve a smooth control of the speed of the loader and the excavator.
It achieves the convenience and accuracy of throttle control, simplifies the operation process, and improves the working efficiency and performance of the excavation loader.
Smart Images
Figure CN222759862U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of throttle control of excavator loader vehicles, in particular to a throttle control switching circuit of a loader excavator. Background Art
[0002] The existing backhoe loader is a multifunctional engineering machinery equipment, which is widely used in the construction fields of buildings, roads, bridges, etc. The front end of the backhoe loader is the loading end, which is used to shovel soil, sand and gravel and other materials; the rear end is the digging end, which is used to dig foundations, trenches, etc. Due to the different functions of the front and rear ends, the throttle needs to be set separately to control their respective working speeds.
[0003] However, the existing backhoe loaders on the market have certain problems in throttle control. Specifically, the throttle at the excavation end usually adopts a mechanical throttle or a cable throttle. In actual operation, both types of throttle control methods have certain limitations: on the one hand, the operator needs to adjust the two throttles separately to achieve the coordinated work of the front and rear ends, and the operation process is relatively cumbersome, which brings inconvenience to the operator; on the other hand, the control accuracy of mechanical throttles and cable throttles is low, which is difficult to meet the requirements of working efficiency and accuracy of backhoe loaders in modern engineering construction.
[0004] Therefore, in view of the shortcomings of existing backhoe loaders in throttle control, it is necessary to propose a new throttle control system to improve the operating convenience and control accuracy, thereby improving the working efficiency and performance of the backhoe loader. Utility Model Content
[0005] The utility model aims to provide a throttle control switching circuit for loading an excavator in view of the above problems.
[0006] To achieve the above-mentioned purpose, the utility model discloses a throttle control switching circuit for a loading excavator, comprising a key power supply, a starting power supply and an engine ECU controller electrically connected to the key power supply and the starting power supply. The structural feature of the circuit is that the engine ECU controller and a normally open relay are connected in parallel to the key power supply, the normally open relay is electrically connected to a display instrument, the engine ECU controller is electrically connected to a loading pedal electronic throttle and an excavation knob fixed throttle, and the engine ECU controller is electrically connected to the display instrument.
[0007] After adopting the above structure, by electrically connecting the loading pedal electronic throttle and the excavation knob fixed throttle on the engine ECU controller, the speed of the loader and the excavator can be smoothly controlled according to the voltage value of the electrical signal. By connecting the engine ECU controller with the key power supply and the starting power supply, the starting and operation of the engine can be effectively controlled. By connecting the engine ECU controller and the normally open relay in parallel on the key power supply, it can be ensured that the display instrument is powered on immediately after the engine is started, thereby improving the convenience of the operator. By electrically connecting the engine ECU controller and the display instrument, the operator can be provided with necessary information about the engine operating status.
[0008] Preferably, the loading foot pedal electronic throttle includes a first throttle electrical signal receiving port, a first throttle electrical signal output port and a first throttle grounding port, the first throttle electrical signal receiving port is provided with a first electrical signal transmission circuit electrically connected to the first power supply interface on the engine ECU controller, the first throttle electrical signal output port is provided with a first electrical signal receiving circuit electrically connected to the first electrical signal receiving port on the engine ECU controller, and the first throttle grounding port is provided with a first grounding circuit electrically connected to the first grounding port on the engine ECU controller.
[0009] Preferably, the excavation knob set throttle includes a second throttle electrical signal receiving port, a second throttle electrical signal output port and a second throttle grounding port, the second throttle electrical signal receiving port is provided with a second electrical signal transmission circuit electrically connected to the second power supply interface on the engine ECU controller, the second throttle electrical signal output port is provided with a second electrical signal receiving circuit electrically connected to the second electrical signal receiving port on the engine ECU controller, and the second throttle grounding port is provided with a second grounding circuit electrically connected to the second grounding port on the engine ECU controller.
[0010] Preferably, the normally open relay includes a relay normally open contact power-on circuit and a relay coil power-on circuit, the key power supply is electrically connected to the input end circuit of the relay normally open contact power-on circuit and the output end circuit of the relay normally open contact power-on circuit is electrically connected to the display instrument, and the input end circuit of the relay coil power-on circuit is electrically connected to the first electrical signal output end of the engine ECU controller.
[0011] Preferably, a speed data electrical signal transmission power-on circuit is provided between the engine ECU controller and the display instrument, and the input end of the speed data electrical signal transmission power-on circuit is electrically connected to the second electrical signal output end of the engine ECU controller.
[0012] In summary, the beneficial effects of the utility model are: the utility model is simple to operate and the engine speed switching is flexible; by electrically connecting the loading pedal electronic throttle and the excavation knob fixed throttle on the engine ECU controller, the speed of the loader and the excavator can be smoothly controlled according to the voltage value of the electrical signal; by connecting the engine ECU controller with the key power supply and the starting power supply, the starting and operation of the engine can be effectively controlled; by connecting the engine ECU controller and the normally open relay in parallel on the key power supply, it can be ensured that the display instrument is powered on immediately after the engine is started, thereby improving the convenience of the operator; and by electrically connecting the engine ECU controller and the display instrument, the operator can be provided with necessary information about the engine operating status. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is the electrical schematic diagram of the utility model as a whole.
[0014] In the figure: 1. key power supply; 2. starting power supply; 3. engine ECU controller; 4. normally open relay; 5. display instrument; 6. loading pedal electronic throttle; 7. tapping knob to set throttle; 8. first throttle electric signal receiving port; 9. first throttle electric signal output port; 10. first throttle grounding port; 11. first power supply interface; 12. first electric signal transmission line; 13. first electric signal receiving port; 14. first electric signal receiving line; 15. first grounding port; 16. first grounding line; 1 7. Second throttle electrical signal receiving port; 18. Second throttle electrical signal output port; 19. Second throttle grounding port; 20. Second power supply interface; 21. Second electrical signal transmission circuit; 22. Second electrical signal receiving port; 23. Second electrical signal receiving circuit; 24. Second grounding port; 25. Second grounding circuit; 26. Relay normally open contact power-on circuit; 27. Relay coil power-on circuit; 28. First electrical signal output terminal; 29. Speed data electrical signal transmission power-on circuit; 30. Second electrical signal output terminal. DETAILED DESCRIPTION
[0015] The following is a further detailed description of the specific implementation of the present invention in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.
[0016] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.
[0017] like Figure 1As shown, the utility model includes a key power supply 1, a starting power supply 2 and an engine ECU controller 3 electrically connected to the key power supply 1 and the starting power supply 2. By connecting the engine ECU controller 3 to the key power supply 1 and the starting power supply 2, the starting and running of the engine can be effectively controlled; the engine ECU controller 3 and the normally open relay 4 are connected in parallel to the key power supply 1, and the display instrument 5 is electrically connected to the normally open relay 4. When designed, the normally open relay 4 includes a relay normally open contact power-on circuit 26 and a relay coil power-on circuit 27. The key power supply 1 is electrically connected to the input end circuit of the relay normally open contact power-on circuit 26 and the output end circuit of the relay normally open contact power-on circuit 26 is electrically connected to the display instrument 5. When installed, the input end circuit of the relay coil power-on circuit 27 is electrically connected to the first electrical signal output end 28 of the engine ECU controller 3. In this way, by connecting the engine ECU controller 3 and the normally open relay 4 in parallel to the key power supply 1, it can be ensured that the display instrument 5 is powered on immediately after the engine is started.
[0018] The engine ECU controller 3 is electrically connected with a loading pedal electronic throttle 6 and an excavation knob fixed throttle 7. When designed, the loading pedal electronic throttle 6 includes a first throttle electrical signal receiving port 8, a first throttle electrical signal output port 9 and a first throttle grounding port 10, wherein the first throttle electrical signal receiving port 8 is provided with a first electrical signal transmission line 12 electrically connected to a first power supply interface 11 on the engine ECU controller 3, the first throttle electrical signal output port 9 is provided with a first electrical signal receiving line 14 electrically connected to a first electrical signal receiving port 13 on the engine ECU controller 3, and the first throttle grounding port 10 is provided with a first electrical signal receiving line 14 electrically connected to a first electrical signal receiving port 13 on the engine ECU controller 3. The first grounding line 16 electrically connected to the grounding port 15, the above-mentioned excavation knob throttle 7 includes a second throttle electric signal receiving port 17, a second throttle electric signal output port 18 and a second throttle grounding port 19, a second electric signal transmission line 21 electrically connected to the second power supply interface 20 on the engine ECU controller 3 is provided on the second throttle electric signal receiving port 17, a second electric signal receiving line 23 electrically connected to the second electric signal receiving port 22 on the engine ECU controller 3 is provided on the second throttle electric signal output port 18, and a second grounding line 25 electrically connected to the second grounding port 24 on the engine ECU controller 3 is provided on the second throttle grounding port 19. In this way, by electrically connecting the loading pedal electronic throttle 6 and the excavation knob throttle 7 on the engine ECU controller 3, the speed of the loader and the excavator can be smoothly controlled according to the voltage value of the electric signal.
[0019] The engine ECU controller 3 is electrically connected to the display instrument 5. During design, a speed data electrical signal transmission power circuit 29 is provided between the engine ECU controller 3 and the display instrument 5. The input end of the speed data electrical signal transmission power circuit 29 is electrically connected to the second electrical signal output end 30 of the engine ECU controller 3. In this way, by electrically connecting the engine ECU controller 3 to the display instrument 5, necessary information about the engine speed operating status can be provided to the operator.
[0020] During use, when the vehicle key switch is powered on, the starting power supply 2 and the key power supply 1 wake up the engine ECU controller 3. At the same time, the relay coil power supply circuit 27 receives the electrical signal sent by the first electrical signal output terminal 28 of the engine ECU controller 3, so that the fast closing circuit 26 of the relay normally open contact is attracted, and the key power supply 1 controls the display instrument 5 to light up. At this time, the loading pedal electronic throttle 6 controls the loading end and walking of the excavator loader, and the excavation knob fixed throttle 7 controls the speed of the excavation end engine. When the above two throttles conflict, usually when the vehicle is in standby mode, the engine ECU controller 3 will give priority to the throttle with a larger voltage value and execute the current throttle size; and the display instrument 5 displays necessary information about the engine speed operating status to the operator.
[0021] The above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model is described in detail with reference to the above embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the above embodiments, or replace some or all of the technical features therein with equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.
Claims
1. A throttle control switching circuit for a loading excavator, comprising a key power supply (1), a starting power supply (2), and an engine ECU controller (3) electrically connected to the key power supply (1) and the starting power supply (2), characterized in that: The key power supply (1) is connected in parallel with an engine ECU controller (3) and a normally open relay (4); the normally open relay (4) is electrically connected with a display instrument (5); the engine ECU controller (3) is electrically connected with a loading pedal electronic throttle (6) and an excavation knob fixed throttle (7); and the engine ECU controller (3) and the display instrument (5) are electrically connected.
2. The throttle control switching circuit for a loading and excavating machine as claimed in claim 1, characterized in that: The loading pedal electronic throttle (6) comprises a first throttle electrical signal receiving port (8), a first throttle electrical signal output port (9) and a first throttle grounding port (10); the first throttle electrical signal receiving port (8) is provided with a first electrical signal transmission line (12) electrically connected to a first power supply interface (11) on an engine ECU controller (3); the first throttle electrical signal output port (9) is provided with a first electrical signal receiving line (14) electrically connected to a first electrical signal receiving port (13) on the engine ECU controller (3); and the first throttle grounding port (10) is provided with a first grounding line (16) electrically connected to a first grounding port (15) on the engine ECU controller (3).
3. The throttle control switching circuit for a loading and excavating machine as claimed in claim 1, characterized in that: The excavation knob throttle (7) comprises a second throttle electric signal receiving port (17), a second throttle electric signal output port (18) and a second throttle grounding port (19); the second throttle electric signal receiving port (17) is provided with a second electric signal transmission line (21) electrically connected to a second power supply interface (20) on an engine ECU controller (3); the second throttle electric signal output port (18) is provided with a second electric signal receiving line (23) electrically connected to a second electric signal receiving port (22) on the engine ECU controller (3); and the second throttle grounding port (19) is provided with a second grounding line (25) electrically connected to a second grounding port (24) on the engine ECU controller (3).
4. The throttle control switching circuit for a loading and excavating machine as claimed in claim 1, characterized in that: The normally open relay (4) comprises a relay normally open contact power circuit (26) and a relay coil power circuit (27); the key power supply (1) is electrically connected to an input end circuit of the relay normally open contact power circuit (26); and an output end circuit of the relay normally open contact power circuit (26) is electrically connected to a display instrument (5); and the input end circuit of the relay coil power circuit (27) is electrically connected to a first electrical signal output end (28) of an engine ECU controller (3).
5. The throttle control switching circuit for a loading and excavating machine as claimed in claim 1, characterized in that: A rotation speed data electrical signal transmission power circuit (29) is provided between the engine ECU controller (3) and the display instrument (5), and an input end of the rotation speed data electrical signal transmission power circuit (29) is electrically connected to a second electrical signal output end (30) of the engine ECU controller (3).