Supporting leg folding and unfolding control circuit of loader-digger
By designing an automated leg retraction and release control circuit for excavator loader, the problems of inconvenient operation, large safety hazards and single functions in the existing technology are solved, and the automatic control of the leg is realized, and the operation safety and efficiency are improved.
Patent Information
- Application Number
- CN202420754396.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-12
- Publication Date
- 2025-03-14
- Estimated Expiration
- 2034-04-12
AI Technical Summary
When performing excavation operations, the retraction and placement of the legs of the existing excavation loaders require manual operation by the personnel on the vehicle, resulting in inconvenient operation, large safety hazards and single functions, which cannot meet the diverse needs of modern engineering construction.
A mining loader leg retracting and release control circuit is designed, including common electrical power, starting electrical power and device electrical power supply. By connecting a normally closed relay, an induction switch and solenoid valve in parallel, the automatic retracting and release of the legs is realized, and the status of the legs is displayed in real time through the status indicator light.
It realizes automatic control of the outriggers, reduces the operating burden of personnel on the vehicle, improves operational safety and efficiency, and adapts to different operating environments and task needs.
Smart Images
Figure CN222614376U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of outrigger control of excavating loaders, in particular to an outrigger retraction and extension control circuit of excavating loaders. Background Art
[0002] When an existing backhoe loader is performing an excavation operation, it is usually necessary to lower the outriggers at both ends before proceeding. However, in actual operation, the outriggers can only be retracted and extended by the personnel on the vehicle. This operation method has the following problems:
[0003] First, the personnel on the vehicle need to constantly pay attention to the status of the outriggers, which brings inconvenience to the operation. During the excavation operation, the personnel on the vehicle need to always pay attention to whether the outriggers have been lowered or put away in place in order to proceed to the next operation. This operation method not only increases the workload of the personnel on the vehicle, but also reduces the efficiency of the excavation operation.
[0004] Secondly, due to the high height of the backhoe loader, the personnel on the vehicle face certain safety risks when operating the outriggers. In actual operation, the personnel on the vehicle need to stand at a higher position to retract and extend the outriggers, which undoubtedly increases the safety hazards during the operation. Especially in the case of complex construction site environment, this safety hazard is more prominent.
[0005] In addition, the existing excavation control system of the backhoe loader has a single function and cannot meet the diversified needs of modern engineering construction. With the continuous expansion of the scale of projects and the continuous improvement of construction requirements, the backhoe loader needs to have more powerful functions to adapt to different working environments and task requirements. Utility Model Content
[0006] The utility model aims to provide a circuit for controlling the extension and retraction of the outriggers of an excavator loader in view of the above problems.
[0007] To achieve the above-mentioned purpose, the utility model discloses a control circuit for the extension and retraction of outrigger legs of an excavator loader, comprising a common power supply, a starting power supply and a device power supply, wherein a first normally closed relay and a second normally closed relay are connected in parallel to the common power supply, and the first normally closed relay and the second normally closed relay are electrically connected to a controller, a leg extension induction switch and a leg retraction induction switch are connected in parallel to the starting power supply, and the leg extension induction switch and the leg retraction induction switch are electrically connected to the first normally closed relay and the second normally closed relay respectively, and a first normally open relay and a second normally open relay are connected in parallel to the device power supply, which are electrically connected to the controller and cooperate with the first normally closed relay and the second normally closed relay respectively, the first normally open relay is electrically connected to an outrigger extension solenoid valve, and the second normally open relay is electrically connected to a leg retraction solenoid valve.
[0008] After adopting the above structure, by connecting the first normally closed relay and the second normally closed relay in parallel to the common power supply, and electrically connecting them to the controller and cooperating with the leg extension solenoid valve on the first normally open relay and the leg retraction solenoid valve on the second normally open relay, the outriggers can be automatically extended and retracted, reducing the operating burden of the personnel on the vehicle and improving the safety of the operation. By connecting the leg extension induction switch and the leg retraction induction switch in parallel to the starting power supply, and electrically connecting them to the first normally closed relay and the second normally closed relay, the system can automatically cut off the power supply when the outriggers touch the ground or are retracted, thereby avoiding accidents caused by misoperation.
[0009] Preferably, the first normally closed relay includes a first relay normally closed contact power-on circuit and a first relay coil power-on circuit, the input end circuit of the first relay normally closed contact power-on circuit is electrically connected to a common power supply and a leg release control switch is provided on the input end circuit of the first relay normally closed contact power-on circuit, the output end circuit of the first relay normally closed contact power-on circuit is electrically connected to a first electrical signal input end of a controller, the input end circuit of the first relay coil power-on circuit is electrically connected to a starting power supply and a leg release sensing switch is provided on the input end circuit of the first relay coil power-on circuit.
[0010] Preferably, the second normally closed relay includes a second relay normally closed contact power-on circuit and a second relay coil power-on circuit, the input end circuit of the second relay normally closed contact power-on circuit is electrically connected to the common power supply and a leg retraction and extension control switch is arranged on the input end circuit of the second relay normally closed contact power-on circuit, the output end circuit of the second relay normally closed contact power-on circuit is electrically connected to the second electrical signal input end of the controller, the input end circuit of the second relay coil power-on circuit is electrically connected to the starting power supply and the leg retraction and extension induction switch is arranged on the input end circuit of the second relay coil power-on circuit. By arranging the leg extension and extension control switch on the input end circuit of the first relay normally closed contact power-on circuit and the leg retraction and extension control switch on the input end circuit of the second relay normally closed contact power-on circuit, the operator can more conveniently control the retraction and extension of the legs.
[0011] Preferably, the first normally open relay includes a first relay normally open contact power-on circuit and a third relay coil power-on circuit, the input end circuit of the first relay normally open contact power-on circuit is electrically connected to the device power supply, the leg release solenoid valve is electrically connected to the output end circuit of the first relay normally open contact power-on circuit and a first status indicator light is also connected in parallel to the output end circuit of the first relay normally open contact power-on circuit, and the input end circuit of the third relay coil power-on circuit is electrically connected to the first electrical signal output end of the controller.
[0012] Preferably, the second normally open relay includes a second relay normally open contact power circuit and a fourth relay coil power circuit, the input end circuit of the second relay normally open contact power circuit is electrically connected to the device power supply, the leg retracting and extending solenoid valve is electrically connected to the output end circuit of the second relay normally open contact power circuit, and the output end circuit of the second relay normally open contact power circuit is also connected in parallel with a second status indicator light, and the input end circuit of the fourth relay coil power circuit is electrically connected to the second electrical signal output end of the controller. By providing the first status indicator light and the second status indicator light on the output end circuit of the first normally open relay and the second normally open relay, the retracting and extending state of the outrigger can be displayed in real time, which helps the personnel on the vehicle understand the working condition of the outrigger and further improves the safety of the operation.
[0013] In summary, the beneficial effects of the utility model are as follows: the utility model is simple to operate and can accurately control the retraction and extension of the outriggers. By connecting the first normally closed relay and the second normally closed relay in parallel to the common power supply, and electrically connecting them to the controller and cooperating with the outrigger extension solenoid valve on the first normally open relay and the outrigger retracting solenoid valve on the second normally open relay, the outriggers can be automatically retracted and extended, reducing the operating burden of the personnel on the vehicle and improving the safety of the operation. By connecting the outrigger extension induction switch and the outrigger retracting induction switch in parallel to the starting power supply, and electrically connecting them to the first normally closed relay and the second normally closed relay, the system can automatically cut off the power supply when the outriggers touch the ground or are retracted, thereby avoiding accidents caused by misoperation. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is the electrical schematic diagram of the utility model as a whole.
[0015] In the figure: 1. Common power supply; 2. Start power supply; 3. Device power supply; 4. First normally closed relay; 5. Second normally closed relay; 6. Controller; 7. Outrigger induction switch; 8. Outrigger induction switch; 9. First normally open relay; 10. Second normally open relay; 11. Outrigger solenoid valve; 12. Outrigger solenoid valve; 13. First relay normally closed contact power circuit; 14. First relay coil power circuit; 15. Outrigger control switch; 16. First electrical signal input Terminal; 17, the normally closed contact power circuit of the second relay; 18, the coil power circuit of the second relay; 19, the inlet and outlet leg control switch; 20, the second electrical signal input terminal; 21, the normally open contact power circuit of the first relay; 22, the coil power circuit of the third relay; 23, the first status indicator light; 24, the first electrical signal output terminal; 25, the normally open contact power circuit of the second relay; 26, the coil power circuit of the fourth relay; 27, the second status indicator light; 28, the second electrical signal output terminal. DETAILED DESCRIPTION
[0016] 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.
[0017] The following is a description of preferred embodiments of the present invention in conjunction with the accompanying drawings.
[0018] like Figure 1 As shown, the utility model includes a common power supply 1, a starting power supply 2 and a device power supply 3. A first normally closed relay 4 and a second normally closed relay 5 are connected in parallel to the common power supply 1. The first normally closed relay 4 and the second normally closed relay 5 are electrically connected to a controller 6. A leg-opening induction switch 7 and a leg-retracting induction switch 8 are connected in parallel to the starting power supply 2. The leg-opening induction switch 7 and the leg-retracting induction switch 8 are electrically connected to the first normally closed relay 4 and the second normally closed relay 5, respectively. When designed, the first normally closed relay 4 includes a first relay normally closed contact energizing circuit 13. And the first relay coil power-on circuit 14, the input end circuit of the first relay normally closed contact power-on circuit 13 is electrically connected to the common power supply 1 and a leg release control switch 15 is provided on the input end circuit of the first relay normally closed contact power-on circuit 13, and the output end circuit of the first relay normally closed contact power-on circuit 13 is electrically connected to the first electrical signal input end 16 of the controller 6, wherein the input end circuit of the first relay coil power-on circuit 14 is electrically connected to the starting power supply 2 and the leg release induction switch 7 is provided on the input end circuit of the first relay coil power-on circuit 14. The second normally closed relay 5 mentioned above includes a second relay normally closed contact power circuit 17 and a second relay coil power circuit 18, the input end circuit of the second relay normally closed contact power circuit 17 is electrically connected to the common power supply 1 and a leg retraction and extension control switch 19 is arranged on the input end circuit of the second relay normally closed contact power circuit 17, and the output end circuit of the second relay normally closed contact power circuit 17 is electrically connected to the second electrical signal input end 20 of the controller 6, wherein the input end circuit of the second relay coil power circuit 18 is electrically connected to the starting power supply 2 and the leg retraction and extension induction switch 8 is arranged on the input end circuit of the second relay coil power circuit 18. In this way, by arranging the leg extension and extension control switch 15 on the input end circuit of the first relay normally closed contact power circuit 13 and arranging the leg retraction and extension control switch 19 on the input end circuit of the second relay normally closed contact power circuit 17, the operator can more conveniently control the retraction and extension of the legs. By connecting the outrigger sensing switch 7 and the retracted leg sensing switch 8 in parallel to the starting power supply 2, and electrically connecting them to the first normally closed relay 4 and the second normally closed relay 5, the system can automatically cut off the power supply when the outriggers touch the ground or are retracted, thereby avoiding accidents caused by misoperation.
[0019] The first normally open relay 9 and the second normally open relay 10 are connected in parallel to the device power supply 3, which are electrically connected to the controller 6 and respectively cooperate with the first normally closed relay 4 and the second normally closed relay 5, and the first normally open relay 9 is electrically connected to the leg release solenoid valve 11, and the second normally open relay 10 is electrically connected to the leg retracting solenoid valve 12. In design, the first normally open relay 9 includes a first relay normally open contact power circuit 21 and a third relay coil power circuit 22, and the input end circuit of the first relay normally open contact power circuit 21 is electrically connected to the device power supply 3, wherein the leg release solenoid valve 11 is electrically connected to the output end circuit of the first relay normally open contact power circuit 21, and the output end circuit of the first relay normally open contact power circuit 21 is also connected in parallel with a first state indicator light 23, and the input end circuit of the third relay coil power circuit 22 is electrically connected to the first electrical signal output end 24 of the controller 6. The second normally open relay 10 includes a second relay normally open contact power circuit 25 and a fourth relay coil power circuit 26. The input end circuit of the second relay normally open contact power circuit 25 is electrically connected to the device power supply 3, and the leg retracting and extending electromagnetic valve 12 is electrically connected to the output end circuit of the second relay normally open contact power circuit 25. The output end circuit of the second relay normally open contact power circuit 25 is also connected in parallel with a second state indicator light 27. The input end circuit of the fourth relay coil power circuit 26 is electrically connected to the second electrical signal output end 28 of the controller 6. In this way, by arranging the first state indicator light 23 and the second state indicator light 27 on the output end circuit of the first normally open relay 9 and the second normally open relay 10, the retracting and extending state of the outrigger can be displayed in real time, which helps the personnel on the vehicle understand the working condition of the outrigger and further improves the safety of the operation.
[0020] During use, when the excavation end of the backhoe loader needs to lower the outriggers, the outrigger control switch 15 is closed, so that the first electrical signal input terminal 16 of the controller 6 receives the electrical signal and the first electrical signal output terminal 24 is connected to the output electrical signal, thereby energizing the third relay coil power circuit 22 and the switch on the first relay normally open contact power circuit 21 is closed, controlling the outrigger electronic valve to work so that the outriggers are slowly lowered. At this time, the first status indicator light 23 displays the outrigger status. When the outriggers are placed in the appropriate position, the outrigger release sensing switch 7 is closed to energize the first relay coil power circuit 14, and the switch of the first normally closed relay 4 is disconnected, and the outrigger solenoid valve 11 is de-energized and stops working. Operation: When the excavation end of the backhoe loader needs to retract the outriggers, the outrigger control switch 19 is closed, so that the second electrical signal input terminal 20 of the controller 6 receives the electrical signal and the second electrical signal output terminal 28 is connected to the output electrical signal, thereby energizing the fourth relay coil power circuit 26 and the switch on the second relay normally open contact power circuit 25 is closed, controlling the outrigger electronic valve to work and slowly retract the outriggers. At this time, the second status indicator light 27 displays the outrigger status. When the outriggers are received in the appropriate position, the outrigger sensing switch 8 is closed to energize the second relay coil power circuit 18, and the switch of the second normally closed relay 5 is disconnected, and the outrigger solenoid valve 11 is without power and stops working.
[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 backhoe loader outrigger retraction and extension control circuit, comprising a common power supply (1), a starting power supply (2) and a device power supply (3), characterized in that: The common power supply (1) is connected in parallel with a first normally closed relay (4) and a second normally closed relay (5), and the first normally closed relay (4) and the second normally closed relay (5) are electrically connected to a controller (6). The starting power supply (2) is connected in parallel with a leg-release sensing switch (7) and a leg-retracting sensing switch (8), and the leg-release sensing switch (7) and the leg-retracting sensing switch (8) are electrically connected to the first normally closed relay (4) and the second normally closed relay (5), respectively. The device power supply (3) is connected in parallel with a first normally open relay (9) and a second normally open relay (10), which are electrically connected to the controller (6) and respectively cooperate with the first normally closed relay (4) and the second normally closed relay (5), and the first normally open relay (9) is electrically connected to a leg-release solenoid valve (11), and the second normally open relay (10) is electrically connected to a leg-retracting solenoid valve (12).
2. The backhoe loader outrigger retraction and extension control circuit according to claim 1, characterized in that: The first normally closed relay (4) comprises a first relay normally closed contact power-on circuit (13) and a first relay coil power-on circuit (14); the input end circuit of the first relay normally closed contact power-on circuit (13) is electrically connected to a common power source (1) and a leg release control switch (15) is provided on the input end circuit of the first relay normally closed contact power-on circuit (13); the output end circuit of the first relay normally closed contact power-on circuit (13) is electrically connected to a first electrical signal input end (16) of a controller (6); the input end circuit of the first relay coil power-on circuit (14) is electrically connected to a starting power source (2) and a leg release induction switch (7) is provided on the input end circuit of the first relay coil power-on circuit (14).
3. The backhoe loader outrigger retraction and extension control circuit according to claim 1, characterized in that: The second normally closed relay (5) comprises a second relay normally closed contact power-on circuit (17) and a second relay coil power-on circuit (18); the input end circuit of the second relay normally closed contact power-on circuit (17) is electrically connected to the common power supply (1) and a leg induction control switch (19) is provided on the input end circuit of the second relay normally closed contact power-on circuit (17); the output end circuit of the second relay normally closed contact power-on circuit (17) is electrically connected to the second electrical signal input end (20) of the controller (6); the input end circuit of the second relay coil power-on circuit (18) is electrically connected to the starting power supply (2) and the leg induction switch (8) is provided on the input end circuit of the second relay coil power-on circuit (18).
4. The backhoe loader outrigger retraction and extension control circuit according to claim 1, characterized in that: The first normally open relay (9) comprises a first relay normally open contact power circuit (21) and a third relay coil power circuit (22); the input end circuit of the first relay normally open contact power circuit (21) is electrically connected to the device power supply (3); the leg release solenoid valve (11) is electrically connected to the output end circuit of the first relay normally open contact power circuit (21); and a first status indicator light (23) is also connected in parallel to the output end circuit of the first relay normally open contact power circuit (21); and the input end circuit of the third relay coil power circuit (22) is electrically connected to the first electrical signal output end (24) of the controller (6).
5. The backhoe loader outrigger retraction and extension control circuit according to claim 1, characterized in that: The second normally open relay (10) comprises a second relay normally open contact power circuit (25) and a fourth relay coil power circuit (26); the input end circuit of the second relay normally open contact power circuit (25) is electrically connected to the device power supply (3); the inlet and outlet leg solenoid valve (12) is electrically connected to the output end circuit of the second relay normally open contact power circuit (25); and a second status indicator light (27) is also connected in parallel to the output end circuit of the second relay normally open contact power circuit (25); and the input end circuit of the fourth relay coil power circuit (26) is electrically connected to the second electrical signal output end (28) of the controller (6).