Performance detection system of excavator main control valve

Abstract

The utility model relates to a performance detection system for a main control valve of an excavator. The performance detection system comprises an oil tank, a controller, an oil inlet pipeline, a power device, an oil return pipeline, an integrated electromagnetic valve block and an oil control pipeline, an oil outlet of the oil tank is connected with an input end of the integrated electromagnetic valve block through an oil inlet pipeline, the power device is arranged on the oil inlet pipeline, an output end of the integrated electromagnetic valve block is connected with an oil inlet of the tested main control valve through an oil control pipeline, and an oil return port of the tested main control valve is connected with an oil inlet of the oil tank through an oil return pipeline; a first data acquisition device is arranged at one end, close to an oil outlet of the integrated electromagnetic valve block, of the oil control pipeline, and a second data acquisition device is arranged at one end, close to an oil return opening of the tested main control valve, of the oil return pipeline. According to the utility model, oil pressure is applied to each oil inlet of the detected main control valve through the integrated electromagnetic valve block, and whether the current detected main control valve is qualified or not is determined by analyzing the collected data.

Description

Technical Field

[0001] The utility model belongs to the technical field of multi-way valve performance detection, and particularly relates to a performance detection system for the main control valve of an excavator. Background Technique

[0002] With the continuous development of the economy, many large-scale infrastructure facilities are being continuously expanded, such as mines, bridges, tunnels, etc. There is still a large gap in the market demand for large machinery. Analyzing from the market consumption, the current market consumption is also increasing year by year. Mobile machinery has a broad market prospect in the existing market. Domestic excavator manufacturers do not independently produce main control valves, pumps, and motors. The main control valve, pump, and motor belong to the core components of an excavator. Therefore, the demand for the main control valve is still relatively large. Analyzing from a long-term perspective, there is a certain market for main control valve hydraulic accessories. To make the main control valve well, a performance detection system for the main control valve of an excavator that can restore the actions of the excavator is urgently needed. Summary of the Invention

[0003] The utility model provides a performance detection system for the main control valve of an excavator, which can restore the action conditions of the excavator during the test process, thereby solving the technical problems existing in the background technique.

[0004] The technical solution of the utility model is as follows: A performance detection system for the main control valve of an excavator includes: an oil tank, a controller, an oil inlet pipeline, a power device, an oil return pipeline, an integrated solenoid valve block, and an oil control pipeline;

[0005] The oil outlet of the oil tank is connected to the input end of the integrated solenoid valve block through the oil inlet pipeline. The power device is arranged on the oil inlet pipeline. The output end of the integrated solenoid valve block is connected to the oil inlet of the main control valve to be tested through the oil control pipeline. The oil return port of the main control valve to be tested is connected to the oil inlet of the oil tank through the oil return pipeline;

[0006] One end of the oil control pipeline close to the oil outlet of the integrated solenoid valve block is provided with a first data acquisition device, and one end of the oil return pipeline close to the oil return port of the main control valve to be tested is provided with a second data acquisition device;

[0007] The controller is respectively connected to the integrated solenoid valve block, the power device, the first data acquisition device, and the second data acquisition device;

[0008] The controller is used to receive the data collected by the first data acquisition device and the second data acquisition device, and control the opening degree of the integrated solenoid valve block and the start and stop of the power device.

[0009] Further, the integrated solenoid valve block includes a plurality of solenoid valves, and the oil control pipeline includes a plurality of high-pressure oil pipes;

[0010] The control ports of multiple solenoid valves are all connected to a controller. The oil inlet of each solenoid valve is connected to an oil inlet pipeline. The oil outlet of each solenoid valve is connected to one end of a high-pressure oil pipe. Each high-pressure oil pipe is connected to the corresponding oil inlet of the main control valve to be measured. A first data acquisition device is installed at one end of each high-pressure oil pipe close to the solenoid valve.

[0011] Further, the solenoid valves are divided into: bucket solenoid valve, arm solenoid valve, boom solenoid valve, swing solenoid valve, spare solenoid valve, left travel solenoid valve, right travel solenoid valve, and straight travel solenoid valve.

[0012] Further, both the first data acquisition device and the second data acquisition device include a pressure sensor and a flow meter.

[0013] Further, a filter is provided on the oil return pipeline.

[0014] Further, the power device is a high-pressure pump.

[0015] Further, the controller adopts a PLC.

[0016] The beneficial effects of the present utility model are as follows: The present utility model applies hydraulic pressure to each oil inlet of the main control valve to be measured through an integrated solenoid valve block. By collecting flow rate and pressure data at the oil outlet of the integrated solenoid valve block and collecting flow rate and pressure data at the oil return port of the main control valve to be measured and analyzing the collected data, it is determined whether the current main control valve to be measured is qualified. Brief Description of the Drawings

[0017] Figure 1 is a structural block diagram of the present utility model.

[0018] Figure 2 is a schematic diagram of the integrated solenoid valve block of the present utility model. Detailed Embodiment

[0019] In order to enable those skilled in the art to better understand the solution of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model. The described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0020] In the embodiments of the present utility model, Figure 1 and Figure 2 is a structural block diagram provided according to the specific structure of a performance detection system for a main control valve of an excavator of the present utility model, Figure 1The implementation in it represents the oil circuit, and the dotted line represents the circuit. As Figure 1 and Figure 2 shown, the utility model specifically includes: a fuel tank 1, a controller 10, an oil inlet pipeline 7, a power device 2, an oil return pipeline 9, an integrated solenoid valve block 3, and an oil control pipeline 8.

[0021] The oil outlet of the fuel tank 1 is connected to the input end of the integrated solenoid valve block 3 through the oil inlet pipeline 7. The power device 2 is arranged on the oil inlet pipeline 7. Specifically, the power device 2 is a high-pressure pump for providing oil pressure power. The output end of the integrated solenoid valve block 3 is connected to the oil inlet of the measured main control valve 4 through the oil control pipeline 8. The oil return port of the measured main control valve 4 is connected to the oil inlet of the fuel tank 1 through the oil return pipeline 9. Among them, a filter 12 is arranged on the oil return pipeline 9 for filtering the oil return.

[0022] One end of the oil control pipeline 8 close to the oil outlet of the integrated solenoid valve block 3 is provided with a first data acquisition device 5, and one end of the oil return pipeline 9 close to the oil return port of the measured main control valve 4 is provided with a second data acquisition device 6;

[0023] The controller 10 is respectively connected to the integrated solenoid valve block 3, the power device 2, the first data acquisition device 5, and the second data acquisition device 6.

[0024] The controller 10 is used to receive the data collected by the first data acquisition device 5 and the second data acquisition device 6, and control the opening degree of the integrated solenoid valve block 3 and the start and stop of the power device 2.

[0025] Among them, both the first data acquisition device 5 and the second data acquisition device 6 include a pressure sensor and a flow meter. The first data acquisition device 5 and the second data acquisition device 6 are used to collect the pressure and flow data of the oil outlet of the integrated solenoid valve block 3 and the oil return port of the measured main control valve 4 respectively.

[0026] Specifically, the integrated solenoid valve block 3 includes a plurality of solenoid valves, and the oil control pipeline 8 includes a plurality of high-pressure oil pipes 81.

[0027] The control ports of the plurality of solenoid valves are all connected to the controller 10. The oil inlet of each solenoid valve is connected to the oil inlet pipeline 7. The oil outlet of each solenoid valve is connected to one end of a high-pressure oil pipe 81. Each high-pressure oil pipe 81 is connected to the corresponding oil inlet of the measured main control valve 4. A first data acquisition device 5 is installed at one end of each high-pressure oil pipe 81 close to the solenoid valve.

[0028] The integrated solenoid valve block 3 has 8 separate oil circuits, each of which is the bucket, arm, boom, swing, standby, left travel, right travel, and straight travel. Each oil circuit is equipped with a solenoid valve, which is specifically divided into the following types: bucket solenoid valve 31, arm solenoid valve 32, boom solenoid valve 33, swing solenoid valve 34, standby solenoid valve 35, left travel solenoid valve 36, right travel solenoid valve 37, and straight travel solenoid valve 38. The controller 10 controls each solenoid valve in the integrated solenoid valve block 3 to control the on-off of different oil circuits, thereby simulating different operating states of the excavator.

[0029] Each oil circuit has a separate flow meter and pressure sensor to detect the pressure and flow rate of each oil circuit in real time. The flow meter and pressure sensor are respectively located at the oil outlet of each solenoid valve. Similarly, a flow meter and a pressure sensor are correspondingly arranged for the valve body to be measured, and are respectively located at the oil return port of the valve body to be measured. The high-pressure oil pipe 81 can specifically adopt a hose that can withstand 40 MPa.

[0030] Taking the bucket solenoid valve 31 as an example, the oil outlet of the bucket solenoid valve 31 is connected to the oil inlet of the main control valve 4 to control the bucket of the excavator through the high-pressure oil pipe 81. The controller 10 controls the opening degree of the bucket solenoid valve 31 to control the flow rate of the control oil circuit, thereby simulating the movement of the excavator bucket. Then, the controller 10 collects the data of the first data acquisition device 5 and the second data acquisition device 6.

[0031] The controller 10 is connected to the upper computer 11. The controller 10 transmits the collected data to the upper computer 11. The upper computer 11 analyzes the two groups of collected data to determine whether the current main control valve 4 to be measured is qualified.

[0032] The use process of the present utility model is as follows: When the device starts to operate, the controller 10 gives a signal to the high-pressure pump and the integrated solenoid valve block 3. After receiving the electromagnetic signal, the high-pressure pump outputs hydraulic oil to the integrated solenoid valve block 3. After receiving the signal from the controller 10, the corresponding solenoid valve on the integrated solenoid valve block 3 is energized and the valve opens to output hydraulic oil to the main control valve 4 to be measured. At this time, the corresponding oil inlet of the main control valve 4 to be measured receives the hydraulic oil, which is equivalent to simulating the corresponding movement of the excavator. The oil returns from the oil return opening of the main control valve 4 to be measured to the filter 12. The hydraulic oil is filtered to remove the impurities therein and then returns to the fuel tank 1 for reuse. At the same time, the controller 10 feeds back the detected data to the upper computer 11 in real time. The upper computer 11 displays the real-time flow rate and pressure. The upper computer 11 will judge the feedback data. If the detected data exceeds the set judgment parameters, the upper computer 11 will judge it as an unqualified state.

[0033] Finally, it should be noted that the above specific embodiments are only used to illustrate the technical solutions of the present utility model rather than to limit them. Although the present utility model has been described in detail with reference to the examples, those of ordinary skill in the art should understand that the technical solutions of the present utility model can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present utility model, and all of them should be covered by the scope of the claims of the present utility model.

Claims

1. A performance detection system for the main control valve of an excavator, characterized in that, Including: Fuel tank (1), controller (10), fuel inlet pipeline (7), power device (2), fuel return pipeline (9), integrated solenoid valve block (3) and oil control pipeline (8); The oil outlet of the fuel tank (1) is connected to the input end of the integrated solenoid valve block (3) through the fuel inlet pipeline (7). The power device (2) is arranged on the fuel inlet pipeline (7). The output end of the integrated solenoid valve block (3) is connected to the oil inlet of the main control valve to be measured (4) through the oil control pipeline (8). The oil return port of the main control valve to be measured (4) is connected to the oil inlet of the fuel tank (1) through the fuel return pipeline (9); One end of the oil control pipeline (8) close to the oil outlet of the integrated solenoid valve block (3) is provided with a first data acquisition device (5), and one end of the fuel return pipeline (9) close to the oil return port of the main control valve to be measured (4) is provided with a second data acquisition device (6); The controller (10) is respectively connected to the integrated solenoid valve block (3), the power device (2), the first data acquisition device (5) and the second data acquisition device (6); The controller (10) is used to receive the data collected by the first data acquisition device (5) and the second data acquisition device (6), and control the opening degree of the integrated solenoid valve block (3) and the start and stop of the power device (2).

2. The performance detection system of the main control valve of the excavator according to claim 1, characterized in that The integrated solenoid valve block (3) includes a plurality of solenoid valves, and the oil control pipeline (8) includes a plurality of high-pressure oil pipes (81); The control ports of the plurality of solenoid valves are all connected to the controller (10). The oil inlet of each solenoid valve is connected to the fuel inlet pipeline (7). The oil outlet of each solenoid valve is connected to one end of a high-pressure oil pipe (81). Each high-pressure oil pipe (81) is connected to the corresponding oil inlet of the main control valve to be measured (4). A first data acquisition device (5) is installed at one end of each high-pressure oil pipe (81) close to the solenoid valve.

3. The performance detection system of the main control valve of the excavator according to claim 2, wherein, The solenoid valves are divided into: bucket solenoid valve (31), arm solenoid valve (32), boom solenoid valve (33), swing solenoid valve (34), spare solenoid valve (35), left travel solenoid valve (36), right travel solenoid valve (37), straight travel solenoid valve (38).

4. The performance detection system of the main control valve of the excavator according to claim 1 or 2, characterized in that, Both the first data acquisition device (5) and the second data acquisition device (6) include a pressure sensor and a flow meter.

5. The performance detection system of the main control valve of the excavator according to claim 1, characterized in that, A filter (12) is arranged on the fuel return pipeline (9).

6. The performance detection system of the main control valve of the excavator according to claim 1, characterized in that, The power device (2) is a high-pressure pump.

7. The performance detection system of the main control valve of the excavator according to claim 1, characterized in that The controller (10) adopts a PLC.

8. The performance detection system of the main control valve of the excavator according to claim 7, characterized in that, The controller (10) is connected to the upper computer (11).

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