Automatic damping system for movable arm of loading machine

Abstract

The utility model relates to the technical field of loading machine movable arm damping, in particular to a loading machine movable arm automatic damping system which comprises a whole vehicle controller and further comprises a movable arm large cavity and an energy accumulator which are connected through a hydraulic oil circuit, and a movable arm damping electromagnetic valve electrically connected with the whole vehicle controller is installed on the hydraulic oil circuit. The whole vehicle controller is further electrically connected with a manual damping switch, an automatic damping switch and a gearbox controller. The manual damping switch and the automatic damping switch are connected to the vehicle control unit, the vehicle control unit is used for controlling opening and closing of the movable arm damping electromagnetic valve, the structural design is simple, a driver can flexibly select a control mode for opening and closing the damping function according to needs, and operation is convenient; when the automatic damping switch is closed, the vehicle control unit controls the on-off state of the movable arm damping electromagnetic valve through a signal of the gearbox controller, then the damping function is started and stopped, and the automation degree of the system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shock absorption of a loader's boom, in particular to an automatic shock absorption system for a loader's boom. Background Art

[0002] When the loader is driving on an uneven road, the arm force is unstable, which causes the whole vehicle to shake significantly. In severe cases, the rear axle may be off the ground. The driver's body will also swing with the whole vehicle, which seriously affects the driving comfort. In addition, the shaking of the whole vehicle will cause the materials in the bucket to fall, thereby reducing the working efficiency. In order to reduce the vibration during driving, improve driving comfort and working efficiency, more and more loaders are equipped with arm shock absorption function, but their control systems are mostly complex, and the arm shock absorption function cannot be turned on or off in time during operation. Summary of the invention

[0003] The utility model aims to provide an automatic shock absorption system for a loader boom which has a simple structure and can flexibly control the on and off of the automatic shock absorption function in order to solve the above problems.

[0004] In order to achieve the above-mentioned purpose, the utility model discloses an automatic shock absorption system for a loader boom, including a vehicle controller, a boom large chamber and an accumulator connected through a hydraulic oil circuit, a boom shock absorption solenoid valve electrically connected to the vehicle controller installed on the hydraulic oil circuit, and the vehicle controller is also electrically connected to a manual shock absorption switch, an automatic shock absorption switch and a gearbox controller. The manual shock absorption switch and the automatic shock absorption switch are connected to the vehicle controller, and the switch of the boom shock absorption solenoid valve is controlled by the vehicle controller. The structural design is simple, and the driver can flexibly select the control mode of the start and stop shock absorption function according to the needs, and the operation is convenient; when the automatic shock absorption switch is closed, the vehicle controller controls the switch of the boom shock absorption solenoid valve through the signal of the gearbox controller, and then starts and closes the shock absorption function, thereby improving the automation of the system.

[0005] Preferably, the vehicle controller is provided with a switch power supply pin for supplying power to the manual shock absorbing switch and the automatic shock absorbing switch, and is also provided with a manual switch detection pin and an automatic switch detection pin for detecting the signals of the manual shock absorbing switch and the automatic shock absorbing switch, respectively, the positive poles of the manual shock absorbing switch and the automatic shock absorbing switch are connected in parallel to the switch power supply pin, and the negative poles are connected to the manual switch detection pin and the automatic switch detection pin, respectively. The circuit connection structure is simple.

[0006] Preferably, the vehicle controller is provided with a solenoid valve power supply pin for supplying power to the boom shock absorption solenoid valve and a solenoid valve switch pin for controlling the switch of the boom shock absorption solenoid valve, and the positive and negative poles of the boom shock absorption solenoid valve are connected to the solenoid valve power supply pin and the solenoid valve switch pin respectively. Similarly, the circuit connection structure is simple.

[0007] Preferably, the vehicle controller is connected to the transmission controller via a CAN bus, and information exchange between the vehicle controller and the transmission controller is achieved via the CAN bus.

[0008] Preferably, it also includes an instrument electrically connected to the vehicle controller. The setting of the instrument can enable the driver to know in real time whether the shock absorption function is turned on, which facilitates the driver's driving operation.

[0009] Preferably, the vehicle controller is connected to the instrument via the CAN bus, and information interaction between the vehicle controller and the instrument is achieved via the CAN bus.

[0010] Preferably, the positive poles of the vehicle controller, the transmission controller and the instrument are all connected to a power source, and the negative poles are all grounded.

[0011] Preferably, the lines connecting the vehicle controller, the transmission controller and the instrument to the power supply are all provided with fuses to ensure circuit safety.

[0012] In summary, the beneficial effects of the utility model are as follows: in the utility model, the manual shock absorbing switch and the automatic shock absorbing switch are connected to the vehicle controller, and then the switch of the boom shock absorbing solenoid valve is controlled by the vehicle controller, the structural design is simple, the driver can flexibly select the control mode of the start and stop shock absorbing function according to the needs, and the operation is convenient. When the automatic shock absorbing switch is closed, the vehicle controller controls the switch of the boom shock absorbing solenoid valve through the signal of the gearbox controller, and then the shock absorbing function is started and closed, thereby improving the automation of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of an automatic shock absorbing system for a loader boom of the utility model;

[0014] In the figure: 1. VCU, 1-1. Switch power supply pin, 1-2. Manual switch detection pin, 1-3. Automatic switch detection pin, 1-4. Solenoid valve power supply pin, 1-5. Solenoid valve switch pin, 2. Hydraulic oil circuit, 3. Boom large chamber, 4. Accumulator, 5. Boom shock absorption solenoid valve, 6. Manual shock absorption switch, 7. Automatic shock absorption switch, 8. Transmission controller, 9. CAN bus, 10. Instrument, 11. Insurance, 12. Battery. 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] like Figure 1As shown, the utility model discloses an automatic shock absorption system for a loader boom, including a vehicle controller 1 (in this embodiment, the model of the vehicle controller 1 is WISE40, of course, it can also be other models that can realize the functions recorded in this embodiment, and no specific restrictions are made here). It also includes a boom cavity 3 and an accumulator 4 connected by a hydraulic oil circuit 2, and a boom shock absorption solenoid valve 5 electrically connected to the vehicle controller 1 is installed on the hydraulic oil circuit 2 between the boom cavity 3 and the accumulator 4. The vehicle controller 1 is also electrically connected to a manual shock absorption switch 6, an automatic shock absorption switch 7, a gearbox controller 8 (the model of the gearbox controller 8 in this embodiment can be any one of the prior art that can realize its functions in this embodiment, and no specific restrictions are made here) and an instrument 10.

[0017] The vehicle controller 1 is provided with a switch power supply pin 1-1 for supplying power to the manual shock absorbing switch 6 and the automatic shock absorbing switch 7, and is also provided with a manual switch detection pin 1-2 and an automatic switch detection pin 1-3 for detecting the signals of the manual shock absorbing switch 6 and the automatic shock absorbing switch 7, respectively. The positive poles of the manual shock absorbing switch 6 and the automatic shock absorbing switch 7 are connected in parallel to the switch power supply pin 1-1, and the negative poles are connected to the manual switch detection pin 1-2 and the automatic switch detection pin 1-3, respectively. The vehicle controller 1 is also provided with a solenoid valve power supply pin 1-4 for supplying power to the boom shock absorbing solenoid valve 5 and a solenoid valve switch pin 1-5 for controlling the switch of the boom shock absorbing solenoid valve 5, and the positive and negative poles of the boom shock absorbing solenoid valve 5 are connected to the solenoid valve power supply pin 1-4 and the solenoid valve switch pin 1-5, respectively.

[0018] The vehicle controller 1 is connected to the transmission controller 8 and the instrument 10 respectively via the CAN bus 9 , and the vehicle controller 1 , the transmission controller 8 and the instrument 10 exchange information via the CAN bus 9 .

[0019] The positive poles of the vehicle controller 1, the transmission controller 8 and the meter 10 are all connected in parallel to the power supply, and the negative poles are all connected in parallel to the ground. In this embodiment, the power supply is a battery 12, that is, the positive poles of the vehicle controller 1, the transmission controller 8 and the meter 10 are all connected to the positive pole of the battery 12, and the negative poles are connected to the negative pole of the battery 13. A fuse 11 is provided on the line connecting the vehicle controller 1, the transmission controller 8 and the meter 10 to the positive pole of the battery 12.

[0020] When the manual shock absorber switch 6 is closed (the automatic shock absorber switch 7 is turned on at this time), the manual switch detection pin 1-2 of the vehicle controller 1 receives a high-level signal, and the vehicle controller 1 directly connects the electric circuit of the boom shock absorber solenoid valve 5 through the solenoid valve switch pin 1-5, so that the boom shock absorber solenoid valve 5 is opened, and then the boom large chamber 3 and the accumulator 4 are connected through the hydraulic oil circuit 2, and the shock absorber function is turned on to achieve boom shock absorber. Then the vehicle controller 1 sends the signal that the shock absorber function has been turned on to the instrument 10 through the CAN bus 9, and the instrument 10 displays the shock absorber symbol, so that the driver can easily know that the shock absorber function has been successfully turned on.

[0021] When the automatic shock absorber switch 7 is closed (the manual shock absorber switch 6 is open at this time), the automatic switch detection pin 1-3 of the vehicle controller 1 receives a high-level signal, and the vehicle controller 1 first receives the vehicle speed signal from the transmission controller 8 through the CAN bus 9. When the vehicle speed signal reaches the set threshold, the vehicle controller 1 connects the electric circuit of the boom shock absorber solenoid valve 5 through the solenoid valve switch pin 1-5, so that the boom shock absorber solenoid valve 5 is opened, and then the boom large chamber 3 and the accumulator 4 are connected through the hydraulic oil circuit 2 to realize the shock absorption function. Then the vehicle controller 1 sends a signal that the shock absorption function has been turned on to the instrument 10 through the CAN bus 9, and the instrument 10 displays the shock absorption symbol, so that the driver can easily know that the shock absorption function has been automatically turned on at this time.

[0022] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principle of the present invention. These improvements and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An automatic shock absorption system for a loader boom, comprising a vehicle controller (1), characterized in that: It also includes a boom chamber (3) and an accumulator (4) connected via a hydraulic oil circuit (2); a boom damping solenoid valve (5) electrically connected to the vehicle controller (1) is installed on the hydraulic oil circuit (2); and the vehicle controller (1) is also electrically connected to a manual damping switch (6), an automatic damping switch (7) and a gearbox controller (8).

2. The automatic shock absorption system for the loader boom according to claim 1, characterized in that: The vehicle controller (1) is provided with a switch power supply pin (1-1) for supplying power to the manual shock absorbing switch (6) and the automatic shock absorbing switch (7), and is also provided with a manual switch detection pin (1-2) and an automatic switch detection pin (1-3) for respectively detecting signals of the manual shock absorbing switch (6) and the automatic shock absorbing switch (7); the positive poles of the manual shock absorbing switch (6) and the automatic shock absorbing switch (7) are connected in parallel to the switch power supply pin (1-1), and the negative poles are connected to the manual switch detection pin (1-2) and the automatic switch detection pin (1-3), respectively.

3. The automatic shock absorption system for the loader boom according to claim 1, characterized in that: The vehicle controller (1) is provided with a solenoid valve power supply pin (1-4) for supplying power to the boom shock-absorbing solenoid valve (5) and a solenoid valve switch pin (1-5) for controlling the switch of the boom shock-absorbing solenoid valve (5); the positive and negative poles of the boom shock-absorbing solenoid valve (5) are connected to the solenoid valve power supply pin (1-4) and the solenoid valve switch pin (1-5), respectively.

4. The automatic shock absorption system for the loader boom according to claim 1, characterized in that: The vehicle controller (1) is connected to the transmission controller (8) via a CAN bus (9).

5. The automatic shock absorption system for the loader boom according to claim 4, characterized in that: It also includes a meter (10) electrically connected to the vehicle controller (1).

6. The automatic shock absorption system for the loader boom according to claim 5, characterized in that: The vehicle controller (1) is connected to the instrument (10) via the CAN bus (9).

7. The automatic shock absorption system for loader boom according to claim 5, characterized in that: The positive poles of the vehicle controller (1), the gearbox controller (8) and the instrument (10) are all connected to a power source, and the negative poles are all grounded.

8. The automatic shock absorption system for loader boom according to claim 7, characterized in that: The lines connecting the vehicle controller (1), the gearbox controller (8) and the instrument (10) to the power supply are all provided with fuses (11).

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