Anti-impact control circuit for turning of loading machine

Abstract

The utility model relates to the field of loader turning control, and discloses a loader turning anti-impact control circuit, which comprises a starting power supply, a first inductive switch and a second inductive switch, the first inductive switch and the second inductive switch are connected in parallel on the starting power supply, and a functional switch is arranged on a power-on loop at the front ends of the first inductive switch and the second inductive switch. The first inductive switch and the second inductive switch are electrically connected with a normally-open relay, the normally-open relay is electrically connected with a hydraulic steering oil cylinder electromagnetic valve, and the normally-open relay is electrically connected with a starting power source. The control circuit is simple in operation and capable of effectively preventing mutual interference of frames, a driver can know the steering state of the loader in real time by serially connecting the display instrument to the output end circuit of the first inductive switch and the output end circuit of the second inductive switch, so that the loader can be better controlled, and the function switch is arranged on the control circuit, so that the control circuit is more convenient to operate. And a driver can select different steering modes as required, so that the flexibility and the adaptability of the loading machine are improved.

Description

Technical Field

[0001] The utility model relates to the field of loader turning control, in particular to a loader turning anti-impact control circuit. Background Art

[0002] At present, the steering angle of loaders on the market is limited to 37° when turning left or right. Within this range, when the loader frame reaches its limit position, the front frame and the rear frame will collide, resulting in a strong impact force. This impact force will have a negative impact on the driver's experience and will also have a potential destructive effect on the loader's structure.

[0003] In the prior art, in order to reduce this impact force, some loaders have adopted methods of adjusting the steering system, such as adding a steering booster or using a hydraulic power steering system, etc. However, these methods often make the operation of the loader complicated, increase the learning cost and operation difficulty of the driver, and may also increase the maintenance cost of the equipment.

[0004] In addition, some technologies attempt to avoid collisions by changing the frame structure, such as increasing the length of the frame or adopting a foldable frame design. However, these methods often increase the size of the loader, affecting its ability to operate in a narrow space, or increase manufacturing costs and maintenance difficulties. Therefore, in the existing technology, how to improve the steering efficiency and working performance of the loader while ensuring the driver experience and equipment safety has become an urgent problem to be solved. Utility Model Content

[0005] The utility model aims to provide a loader turning anti-impact control circuit for the above problems.

[0006] To achieve the above-mentioned purpose, the utility model discloses a loader turning anti-impact control circuit, including a starting power supply and a first induction switch and a second induction switch connected in parallel to the starting power supply, a functional switch is arranged on the power-on circuit at the front end of the first induction switch and the second induction switch, the first induction switch and the second induction switch are electrically connected to a normally open relay, the normally open relay is electrically connected to a hydraulic steering cylinder solenoid valve, and the normally open relay is electrically connected to the starting power supply.

[0007] After adopting the above structure, by setting a function switch on the control circuit, the driver can select different steering modes as needed, thereby improving the flexibility and adaptability of the loader. By connecting a display instrument in series on the output end circuit of the first sensing switch and the second sensing switch, the driver can understand the steering state of the loader in real time, thereby better controlling the loader. By optimizing the control circuit of the steering system, the loader can control the steering angle more accurately during the steering process, thereby avoiding the collision between the front frame and the rear frame and improving the steering efficiency.

[0008] Preferably, the normally open relay includes a relay normally open contact power-on circuit and a relay coil power-on circuit, the input end of the relay normally open contact power-on circuit is electrically connected to the starting power supply and the output end of the relay normally open contact power-on circuit is electrically connected to the hydraulic steering cylinder solenoid valve, and the input end of the relay coil power-on circuit is electrically connected to the first induction switch and the second induction switch, respectively.

[0009] Preferably, the first inductive switch includes a first switch input circuit and a first switch output circuit, and the second inductive switch includes a second switch input circuit and a second switch output circuit, and a display meter is connected in series to the first switch output circuit and the second switch output circuit.

[0010] Preferably, the first switch input terminal circuit and the second switch input terminal circuit are electrically connected to a control circuit located at the rear end of the functional switch.

[0011] Preferably, the input end circuit of the relay normally open contact energizing circuit is electrically connected to the control circuit located at the rear end of the functional switch.

[0012] In summary, the beneficial effects of the utility model are: the utility model is simple to operate and can effectively prevent the frames from interfering with each other. By optimizing the control circuit of the steering system, the loader can control the steering angle more accurately during the steering process, thereby avoiding the collision of the front frame and the rear frame and improving the steering efficiency. Since the impact force caused by the collision is avoided, the driver will not be disturbed unnecessary during driving, thereby improving the driver's comfort and safety. At the same time, by optimizing the control circuit, the operation of the loader becomes simpler, reducing the driver's learning cost and operating difficulty. By connecting the display instrument in series on the output end circuit of the first induction switch and the second induction switch, the driver can understand the steering status of the loader in real time, thereby better controlling the loader. By setting a function switch on the control circuit, the driver can choose different steering modes as needed, thereby improving the flexibility and adaptability of the loader. 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. Starting power supply; 2. First induction switch; 3. Second induction switch; 4. Function switch; 5. Normally open relay; 6. Hydraulic steering cylinder solenoid valve; 7. Relay normally open contact power circuit; 8. Relay coil power circuit; 9. Display instrument; 10. Control circuit. 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 1 As shown, the utility model includes a starting power supply 1 and a first induction switch 2 and a second induction switch 3 connected in parallel to the starting power supply, a functional switch 4 is provided on the power-on circuit at the front end of the first induction switch 2 and the second induction switch 3, and the first induction switch 2 and the second induction switch 3 are electrically connected with a normally open relay 5, the normally open relay 5 is electrically connected to the starting power supply, and when designed, the normally open relay 5 includes a relay normally open contact power-on circuit 7 and a relay coil power-on circuit 8, wherein the input end of the relay normally open contact power-on circuit 7 is electrically connected to the starting power supply 1, and the input end of the relay coil power-on circuit 8 is electrically connected to the first induction switch 2 and the second induction switch 3, respectively.

[0018] The normally open relay 5 is electrically connected to a hydraulic steering cylinder solenoid valve 6. When designing, the output end of the normally open contact energizing circuit 7 of the relay is electrically connected to the hydraulic steering cylinder solenoid valve 6.

[0019] The first induction switch 2 includes a first switch input circuit and a first switch output circuit, and the second induction switch 3 includes a second switch input circuit and a second switch output circuit. A display meter 9 is connected in series to the first switch output circuit and the second switch output circuit. By connecting the display meter 9 in series to the output circuits of the first induction switch 2 and the second induction switch 3, the driver can understand the steering state of the loader in real time, so as to better control the loader. During manufacturing, the first switch input circuit and the second switch input circuit are electrically connected to the control circuit 10 located at the rear end of the function switch 4. At the same time, the normally open contact of the relay is turned on. The input circuit of the electric loop 7 is also electrically connected to the control circuit 10 located at the rear end of the function switch 4. By setting the function switch 4 on the control circuit 10, the driver can select different steering modes as needed, which can improve the flexibility and adaptability of the loader. During installation, the first induction switch 2 and the second induction switch 3 are respectively installed on the left and right sides of the rear end of the front frame or the left and right sides of the front end of the rear frame. In this way, through the first induction switch 2 and the second induction switch 3, the loader can more accurately control the steering angle during the steering process, thereby avoiding the collision between the front frame and the rear frame and improving the steering efficiency.

[0020] When in use, close the function switch 4. When the loader turns left or right, the position of the sensing plate of the first sensing switch 2 or the second sensing switch 3 is usually set to a sensing angle of 35°. At this time, a signal is output to the relay to energize the relay coil power circuit 8, and the relay switch is closed to control the hydraulic steering cylinder solenoid valve 6 to close by 70%, thereby reducing the steering oil flow, thereby reducing the impact and enabling normal steering. At the same time, the signal on the first sensing switch 2 or the second sensing switch 3 is input to the instrument, and the instrument status indicator light is on.

[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.

[0022] 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 loader turning anti-impact control circuit, characterized in that: The invention comprises a starting power supply (1) and a first inductive switch (2) and a second inductive switch (3) connected in parallel to the starting power supply, wherein a functional switch (4) is arranged on the power supply circuit at the front end of the first inductive switch (2) and the second inductive switch (3), and the first inductive switch (2) and the second inductive switch (3) are electrically connected to a normally open relay (5), and the normally open relay (5) is electrically connected to a hydraulic steering cylinder solenoid valve (6), and the normally open relay (5) is electrically connected to the starting power supply.

2. The loader turning anti-impact control circuit according to claim 1, characterized in that: The normally open relay (5) comprises a relay normally open contact power circuit (7) and a relay coil power circuit (8), wherein the input end of the relay normally open contact power circuit (7) is electrically connected to a starting power source (1) and the output end of the relay normally open contact power circuit (7) is electrically connected to a hydraulic steering cylinder solenoid valve (6), and the input end of the relay coil power circuit (8) is electrically connected to a first induction switch (2) and a second induction switch (3), respectively.

3. The loader turning anti-impact control circuit according to claim 1, characterized in that: The first inductive switch (2) comprises a first switch input circuit and a first switch output circuit, the second inductive switch (3) comprises a second switch input circuit and a second switch output circuit, and the first switch output circuit and the second switch output circuit are connected in series with a display instrument (9).

4. The loader turning anti-impact control circuit as claimed in claim 3, characterized in that: The first switch input end circuit and the second switch input end circuit are electrically connected to a control circuit (10) located at the rear end of the functional switch (4).

5. The loader turning anti-impact control circuit according to claim 2, characterized in that: The input circuit of the relay normally open contact energizing circuit (7) is electrically connected to a control circuit (10) located at the rear end of the functional switch (4).

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