A kind of oil cylinder automatic inflation and leakage detection device

Abstract

This invention belongs to the field of hydraulic cylinder inflation technology, and specifically relates to an automatic inflation and leakage detection device for hydraulic cylinders. It includes a high-pressure gas cylinder, a pressure-reducing control valve group, a control valve group, and an inflation connector switch connected in sequence; and an inflation pipe for connection. The pressure-reducing control valve group controls the output gas at a set pressure to ensure stable inflation pressure output. It includes a pressure-reducing valve body, an input pressure gauge, and an output pressure gauge. The control valve group controls inflation, deflation, and pressure detection. It includes a control valve body with a pressure gauge and a sensor connected to it. The inflation connector switch includes a connector body and a connector control component. The connector control component controls the opening and closing of the inflation connector. This invention provides a device capable of automatically controlling air pressure and automatically detecting leaks, enabling accurate determination of the leak location.

Description

Technical Field

[0001] This invention belongs to the field of hydraulic cylinder inflation technology, and specifically relates to an automatic hydraulic cylinder inflation and leakage detection device. Background Technology

[0002] Hydraulic cylinders are typical and widely used actuators that convert hydraulic energy into mechanical energy to achieve linear reciprocating motion or oscillating reciprocating motion, and are widely used in various machine tools and construction machinery. Chinese patent CN116753206B discloses a safety quick-change hydraulic cylinder for excavators, which includes a high-pressure air chamber in the piston rod cavity of the cylinder for filling with high-pressure gas. Currently, there is no dedicated air filling device. Traditional air filling devices are manually controlled, resulting in low automation, low reliability, and low air filling efficiency. The main drawbacks are as follows: First, the inflation pressure is difficult to control: During inflation, the opening size of the control switch is adjusted, and the pressure gauge is observed to adjust until the set pressure is reached, at which point the switch is closed to stop inflation. Since inflation is manually controlled, the inflation pressure is difficult to control. After inflation stops, the sealing of the inflation valve cannot be tested, and the air pressure in the high-pressure chamber of the hydraulic cylinder needs to be measured again using a specialized device.

[0003] Secondly, pressure loss during high-pressure air chamber pressure testing in the hydraulic cylinder: After inflation, the internal air pressure is tested using a pressure gauge rod. When connected to the inflation valve again, the gas inside the hydraulic cylinder leaks out to the pressure gauge, causing varying degrees of internal air pressure loss. Summary of the Invention

[0004] This invention provides an automatic cylinder inflation and leakage detection device, which can solve the problems pointed out in the background art.

[0005] An automatic cylinder inflation and leakage detection device includes a high-pressure gas cylinder, a pressure reducing control valve group, a control valve group and an inflation connector switch connected in sequence; and an inflation pipe for connection. The pressure reducing control valve group controls the output gas at a set pressure to ensure a stable output of the charging pressure. It includes a pressure reducing valve body, an input pressure gauge, and an output pressure gauge. The control valve assembly is used to control inflation, deflation, and pressure detection. It includes a control valve body, on which a pressure gauge and a sensor are connected. The inflation connector switch includes a connector body and a connector control component, which is used to control the opening and closing of the inflation connector.

[0006] Preferably, the control valve assembly is an electromagnetic control valve assembly.

[0007] Preferably, the inflation connector switch is an electromagnetic inflation connector, and the connector control component includes an automatic actuator disposed on the connector body and a push rod valve core disposed on the connector body. The automatic actuator drives the push rod valve core to reciprocate within the connector body. The connector body is provided with an air inlet pipe and an air outlet. The air outlet is opened and closed by the reciprocating movement of the push rod valve core.

[0008] Preferably, the automatic actuator is an electric actuator.

[0009] This invention provides an automatic cylinder inflation and leakage detection device, which has the following advantages: 1. It can automatically control air pressure and automatically detect leaks, enabling it to accurately determine the location of leaks; 2. To achieve automatic control, an inflation connector switch is designed, and a miniature electric actuator is cleverly used to push the push rod valve core, which in turn pushes the inflation connector to open. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram illustrating the inflation principle of the present invention; Figure 3 This is a schematic diagram of the air inflator switch structure of the present invention; Explanation of reference numerals in the attached figures: Labels in the diagram: High-pressure gas cylinder 1; Pressure reducing control valve assembly 2; Pressure reducing valve body 21; Input pressure gauge 22; Output pressure gauge 23; Control valve assembly 3; Control valve body 31; Gas pressure gauge 32; Sensor 33; Inflation connector switch 4; Connector body 41; Automatic actuator 42; Push rod valve core 43; Inlet pipe 44; Outlet end 45. Detailed Implementation

[0011] The following detailed description of a specific embodiment of the present invention is provided in conjunction with the accompanying drawings. However, it should be understood that the scope of protection of the present invention is not limited to the specific embodiment.

[0012] Example: Figure 1-3 As shown in the figure, an automatic cylinder inflation and leakage detection device provided in this embodiment of the invention includes a high-pressure gas cylinder 1, a pressure reducing control valve group 2, a control valve group 3 and an inflation connector switch 4 connected in sequence; and an inflation pipe 5 for connection. The pressure reducing control valve group 2 controls the output gas at a set pressure to ensure a stable output of the charging pressure. It includes a pressure reducing valve body 21, an input pressure gauge 22, and an output pressure gauge 23. The control valve group 3 is used to control inflation, deflation and pressure detection. The control valve group 3 can be an electromagnetic control valve group, which includes a control valve body 31. A pressure gauge 32 and a sensor 33 are connected to the control valve body 31. The inflation connector switch 4 includes a connector body 41 and a connector control component, which is used to control the opening and closing of the inflation connector.

[0013] Specifically, the inflation connector switch 4 is an electromagnetic inflation connector. The connector control assembly includes an automatic actuator 42 mounted on the connector body 41 and a push rod valve core 43 mounted inside the connector body 41. The automatic actuator 42 drives the push rod valve core 43 to reciprocate within the connector body 41. The connector body 41 is provided with an air inlet pipe 44 and an air outlet 45. The air outlet 45 is opened and closed by the reciprocating movement of the push rod valve core 43. The automatic actuator 42 is an electric actuator.

[0014] Inflation: Open the main valve of high-pressure gas cylinder 1, adjust the pressure reducing control valve group 2, set it to the inflation pressure, energize 1DT of control valve group 3 to connect the inflation pipeline, energize 3DT of inflation connector switch 4 to push inflation connector switch 4 open, and the entire inflation pipeline is connected to start inflation.

[0015] Detection: When sensor 33 reaches the set value, the 1DT switch of control valve group 3 is de-energized to disconnect the inflation line. At this time, the pressure of sensor 33 and pressure gauge 32 should remain unchanged. If the pressure drops, there is a leak in the cylinder. If the pressure remains unchanged, the 3DT switch of the inflation connector 4 is de-energized to close the inflation connector, and the 2DT switch of control valve group 3 is energized to release the pressure of sensor 33 and pressure gauge 32. When the pressure drops to 0, the 2DT switch of control valve group 3 is de-energized to disconnect the inflation line. If the pressure of sensor 33 and pressure gauge 32 rises at this time, the cylinder inflation connector switch is leaking.

[0016] The above-disclosed embodiments are merely a few specific examples of the present invention. However, the embodiments of the present invention are not limited thereto, and any variations that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A device for automatic air charging and leakage detection of a cylinder, characterized in that: It includes a high-pressure gas cylinder (1), a pressure reducing control valve group (2), a control valve group (3), and an inflation connector switch (4) connected in sequence; and an inflation pipe (5) for connection. The pressure reducing control valve assembly (2) controls the output gas to a set pressure so that its charging pressure is stable. It includes a pressure reducing valve body (21), an input pressure gauge (22), and an output pressure gauge (23). The control valve assembly (3) is used to control inflation, deflation and pressure detection. It includes a control valve body (31), on which a pressure gauge (32) and a sensor (33) are connected. The inflation connector switch (4) includes a connector body (41) and a connector control component, which is used to control the opening and closing of the inflation connector.

2. The automatic air charging and leakage detection device for oil cylinder according to claim 1, characterized in that: The control valve group (3) is an electromagnetic control valve group.

3. The automatic air charging and leakage detection device for oil cylinder according to claim 1, characterized in that: The inflation connector switch (4) is an electromagnetic inflation connector. The connector control assembly includes an automatic actuator (42) installed on the connector body (41) and a push rod valve core (43) installed inside the connector body (41). The automatic actuator (42) drives the push rod valve core (43) to reciprocate inside the connector body (41). The connector body (41) is provided with an air inlet pipe (44) and an air outlet (45). The air outlet (45) is opened and closed by the reciprocating movement of the push rod valve core (43).

4. The automatic air charging and leakage detection device for oil cylinder according to claim 3, characterized in that: The automatic actuator (42) is an electric actuator.

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