Safety hydraulic control system

Abstract

The utility model discloses a safety hydraulic control system, which relates to the technical field of hydraulic control systems and comprises a main oil path for controlling a hanger, an oil inlet end of the main oil path is communicated with an oil outlet end of an oil supply pump, an oil outlet end of the main oil path is communicated with an oil cylinder for controlling the hanger, and a pressure maintaining one-way valve for preventing oil liquid of the main oil path from flowing back is arranged on the main oil path. An oil inlet adjusting device used for adjusting oil flow is arranged on the main oil way between the oil inlet end of the main oil way and the pressure maintaining one-way valve, the oil inlet end of the oil inlet adjusting device is close to the oil inlet end of the main oil way, and the oil outlet end of the oil inlet adjusting device is close to the pressure maintaining one-way valve. The oil inlet end of the oil return path is communicated with the main oil path between the oil outlet end of the main oil path and the pressure maintaining one-way valve, the oil outlet end of the oil return path is communicated with the oil return end of the oil tank, and an oil return device for controlling the on-off of the oil return path is arranged on the oil return path. The movement of the hanging frame is hydraulically controlled, so that the stable operation of the hanging frame can be ensured, parts can stably enter and exit from the electroplating bath, and the condition that electroplating liquid splashes is avoided.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic control system technology, and in particular to a safe hydraulic control system. Background Technology

[0002] Electroplating is a process that uses the principle of electrolysis to plate a thin layer of another metal or alloy onto the surface of certain metals. It requires a low-voltage, high-current power supply to the electroplating tank and an electrolytic device consisting of an electroplating solution, parts (cathode), and anode. During electroplating, the parts to be plated are first placed in the electroplating solution, and then an electric current is applied to the solution, causing the anolyte material to continuously adhere to the parts, forming a plating layer. In some cases, the electroplating process involves hanging the parts on a rack, which moves to immerse the parts in the plating solution. After plating is complete, the rack rises, removing the parts from the solution. To facilitate the handling of parts, electroplating tanks are generally open; therefore, if the movement of the parts is not smooth, the plating solution can splash. Electroplating solutions are generally highly corrosive chemicals that can easily burn the human body, causing wounds that are difficult to heal. Furthermore, splashed plating solution can damage other equipment in the workplace.

[0003] The inventors were aware that an unstable rack operation could lead to instability when parts enter or leave the electroplating tank, resulting in electroplating solution splashing, which could injure operators and damage other equipment. Utility Model Content

[0004] The purpose of this utility model is to provide a safe hydraulic control system to solve the problems existing in the prior art. By hydraulically controlling the movement of the hanger, the hydraulic transmission is a backlash-free transmission, which ensures smooth movement and stable operation of the hanger. This allows parts to enter and exit the electroplating tank smoothly without splashing of electroplating solution. The pressure-holding check valve on the main oil circuit and the return oil device on the return oil circuit work together to ensure pressure effect and prevent the hanger from suddenly losing control. The oil inlet regulating device can further adjust the oil pressure in the main oil circuit. When the parts carried by the hanger change, the oil pressure in the main oil circuit can also be adjusted accordingly to avoid unstable movement of the hanger caused by load changes.

[0005] To achieve the above objectives, this utility model provides the following solution:

[0006] This utility model provides a safe hydraulic control system, including a main oil circuit for controlling a hanger. The inlet end of the main oil circuit is connected to the outlet end of an oil supply pump, and the outlet end of the main oil circuit is connected to an oil cylinder controlling the hanger. A pressure-holding check valve is provided on the main oil circuit to prevent backflow of oil. An inlet regulating device for adjusting the oil flow rate is provided on the main oil circuit between the inlet end of the main oil circuit and the pressure-holding check valve. The inlet end of the inlet regulating device is close to the inlet end of the main oil circuit, and the outlet end of the inlet regulating device is close to the pressure-holding check valve. The inlet end of a return oil circuit is connected to the main oil circuit between the outlet end of the main oil circuit and the pressure-holding check valve, and the outlet end of the return oil circuit is connected to the return end of an oil tank. A return oil device for controlling the opening and closing of the return oil circuit is provided on the return oil circuit.

[0007] Preferably, a pressure regulating device for adjusting the hydraulic pressure is provided between the oil inlet end of the main oil circuit and the oil inlet regulating device.

[0008] Preferably, the pressure regulating device is an overflow valve, the oil inlet of the pressure regulating oil circuit is connected to the main oil circuit between the oil inlet of the main oil circuit and the oil inlet of the oil inlet regulating device, and the oil outlet of the pressure regulating oil circuit is connected to the oil inlet of the overflow valve.

[0009] Preferably, it also includes an oil inlet regulating device controller for controlling the opening and closing of the oil inlet regulating device.

[0010] Preferably, the oil inlet regulating device is a throttle valve, and the throttle valve is provided with a throttle valve cover plate for controlling the opening and closing of the throttle valve. The working end of the oil inlet regulating device controller is connected to the throttle valve cover plate, and the working end of the oil inlet regulating device controller is used to drive the opening and closing of the throttle valve cover plate.

[0011] Preferably, the oil inlet regulating device controller is a reversing valve, the oil inlet end of the reversing valve is connected to the main oil circuit between the oil inlet end of the main oil circuit and the throttle valve, and the oil outlet end of the reversing valve is connected to the oil cylinder that controls the throttle valve cover plate.

[0012] Preferably, it also includes a return oil device controller for controlling the opening and closing of the return oil device.

[0013] Preferably, the oil return device is a directional valve, and the directional valve is provided with a directional valve cover plate for controlling the opening and closing of the directional valve. The working end of the oil return device controller is connected to the directional valve cover plate, and the working end of the oil return device controller is used to drive the opening and closing of the directional valve cover plate.

[0014] Preferably, the oil return device controller is an electromagnetic ball valve, the oil inlet of the electromagnetic ball valve is connected to the oil return circuit, and the oil outlet of the electromagnetic ball valve is connected to the oil cylinder used to control the directional valve cover.

[0015] Preferably, the oil inlet regulating device is equipped with an oil inlet pressure gauge, and the oil return device is equipped with a return pressure gauge at its oil inlet end.

[0016] The present invention achieves the following technical advantages over the prior art:

[0017] This utility model provides a safe hydraulic control system. The movement of the hanger is controlled by hydraulic power, and the hydraulic transmission is backlash-free, ensuring smooth movement and stable operation of the hanger. This allows parts to enter and exit the electroplating tank smoothly without splashing electroplating solution. The pressure-holding check valve on the main oil circuit and the return oil device on the return oil circuit work together to ensure pressure and prevent the hanger from suddenly losing control. The oil inlet regulating device can further adjust the oil pressure in the main oil circuit. When the parts carried by the hanger change, the oil pressure in the main oil circuit can also be adjusted accordingly to avoid unstable movement of the hanger caused by load changes.

[0018] Compared with the prior art, this utility model also achieves the following technical effects:

[0019] 1. In this utility model, a pressure regulating device is provided between the oil inlet end of the main oil circuit and the oil inlet regulating device to adjust the hydraulic pressure. This device can limit the maximum oil pressure in the main oil circuit, preventing the main oil circuit from being too high and causing the hanger to move too fast or unstable. It can also protect the oil inlet regulating device and the oil return device to a certain extent, preventing excessive pressure from damaging the oil inlet regulating device and the oil return device.

[0020] 2. In this utility model, an oil inlet regulating device controller is provided for controlling the opening and closing of the oil inlet regulating device. It can shut down the oil inlet regulating device in time when the oil pressure in the main oil circuit is abnormal, thereby cutting off the oil supply to the main oil circuit and preventing accidents caused by oil pressure loss leading to bracket loss.

[0021] 3. In this utility model, the oil inlet regulating device controller is a reversing valve. The reversing valve can use the oil in the main oil circuit to control the throttle valve, without the need for an external circuit, air circuit or other independent supply source, which simplifies the system structure and improves control reliability.

[0022] 4. In this utility model, the oil return device controller is an electromagnetic ball valve. The electromagnetic ball valve has high control precision and can accurately adjust the opening of the directional valve cover plate. When returning oil, the oil pressure in the main oil circuit can be reduced steadily, and the control bracket can drive the parts to leave the electroplating tank smoothly. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a safe hydraulic control system according to an embodiment of the present invention.

[0025] Among them, 1. oil supply pump; 2. pressure regulating device; 3. oil inlet pressure gauge; 4. oil inlet regulating device; 5. oil inlet regulating device controller; 6. pressure holding check valve; 7. oil return pressure gauge; 8. oil return device; 9. oil return device controller. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] The purpose of this invention is to provide a safe hydraulic control system to solve the problems existing in the prior art. By hydraulically controlling the movement of the hanger, the hydraulic transmission is a backlash-free transmission, ensuring smooth movement and stable operation of the hanger. This allows parts to smoothly enter and exit the electroplating tank without splashing electroplating solution. The pressure-holding check valve on the main oil circuit and the return oil device on the return oil circuit work together to ensure pressure, preventing the hanger from suddenly losing control. The oil inlet regulating device can further adjust the oil pressure in the main oil circuit. When the parts carried by the hanger change, the oil pressure in the main oil circuit can also be adjusted accordingly, avoiding unstable movement of the hanger caused by load changes.

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0029] like Figure 1As shown, this utility model provides a safe hydraulic control system, including a main oil circuit for controlling the hanger. The inlet end of the main oil circuit is connected to the outlet end of the oil supply pump 1, and the outlet end of the main oil circuit is connected to the oil cylinder controlling the hanger. A pressure-holding check valve 6 is installed on the main oil circuit to prevent backflow of oil. An inlet regulating device 4 for adjusting the oil flow rate is installed on the main oil circuit between the inlet end of the main oil circuit and the pressure-holding check valve 6. The inlet end of the inlet regulating device 4 is close to the inlet end of the main oil circuit, and the outlet end of the inlet regulating device 4 is close to the pressure-holding check valve 6. The inlet end of the return oil circuit is connected to the main oil circuit between the outlet end of the main oil circuit and the pressure-holding check valve 6, and the outlet end of the return oil circuit is connected to the return end of the oil tank. A return oil device 8 for controlling the opening and closing of the return oil circuit is installed on the return oil circuit. The pressure-holding check valve 6 installed on the main oil circuit and the return oil device 8 installed on the return oil circuit work together to ensure the pressure effect in the main oil circuit, prevent the oil in the main oil circuit from flowing back or flowing back, and prevent the bracket from suddenly losing control. The oil inlet regulating device 4 can further adjust the oil pressure in the main oil circuit. When the parts carried by the bracket change, the oil pressure in the main oil circuit can also be adjusted accordingly to avoid unstable movement of the bracket caused by load changes.

[0030] like Figure 1 As shown, a pressure regulating device 2 is installed between the oil inlet end of the main oil circuit and the oil inlet regulating device 4 to adjust the hydraulic pressure. The function of the pressure regulating device 2 is to reduce the oil pressure output by the oil supply pump 1, thereby limiting the maximum oil pressure in the main oil circuit and preventing the main oil circuit oil pressure from being too high, which would cause the bracket to move too fast or unstable. At the same time, it can also play a certain role in protecting the oil inlet regulating device 4 and the oil return device 8, preventing excessive pressure from damaging the oil inlet regulating device 4 and the oil return device 8.

[0031] like Figure 1 As shown, in an exemplary embodiment, the pressure regulating device 2 is a relief valve. The inlet end of the pressure regulating oil circuit is connected to the main oil circuit between the inlet end of the main oil circuit and the inlet end of the oil inlet regulating device 4, and the outlet end of the pressure regulating oil circuit is connected to the inlet end of the relief valve. The relief valve can be one of a direct-acting relief valve, a pilot-operated relief valve, a direct-acting solenoid relief valve, or a pilot-operated solenoid relief valve. It is understood that the pressure regulating device 2 can also be other devices that limit the hydraulic pressure of the oil.

[0032] like Figure 1 As shown, this utility model also includes an oil inlet regulating device controller 5 for controlling the opening and closing of the oil inlet regulating device 4. The oil inlet regulating device controller 5 can promptly close the oil inlet regulating device 4 when the oil pressure in the main oil circuit is abnormal, thereby cutting off the oil supply to the main oil circuit. Because a pressure-holding check valve 6 is provided, the oil cylinder of the control bracket is kept at a reasonable oil pressure, avoiding oil pressure loss that could lead to bracket loss of control.

[0033] like Figure 1As shown, in an exemplary embodiment, the oil inlet regulating device 4 is a throttle valve. The throttle valve is equipped with a throttle valve cover plate for controlling its opening and closing. The working end of the oil inlet regulating device controller 5 is connected to the throttle valve cover plate, and the working end of the controller 5 is used to drive the opening and closing of the throttle valve cover. The throttle valve has the function of adjusting the oil flow rate, which can smooth the oil flow rate and prevent the hanger from moving too quickly due to excessive oil flow.

[0034] like Figure 1 As shown, in an exemplary embodiment, the oil inlet regulating device controller 5 is a directional valve. The oil inlet end of the directional valve is connected to the main oil circuit between the oil inlet end of the main oil circuit and the throttle valve, and the oil outlet end of the directional valve is connected to the cylinder that controls the throttle valve cover. The directional valve can use the oil in the main oil circuit to drive the opening and closing of the throttle valve cover, without the need for a separate supply source. It is understood that the oil inlet regulating device controller 5 can also be an electric valve, a pneumatic valve, a ball valve, or other control devices capable of controlling the opening and closing of the throttle valve cover.

[0035] like Figure 1 As shown, the present invention also includes an oil return device controller 9 for controlling the opening and closing of the oil return device 8.

[0036] like Figure 1 As shown, in an exemplary embodiment, the oil return device 8 is a directional valve, and a directional valve cover plate is provided on the directional valve for controlling the opening and closing of the directional valve. The working end of the oil return device controller 9 is connected to the directional valve cover plate, and the working end of the oil return device controller 9 is used to drive the opening and closing of the directional valve cover plate.

[0037] like Figure 1 As shown, in an exemplary embodiment, the oil return device controller 9 is a solenoid ball valve. The oil inlet of the solenoid ball valve is connected to the oil return circuit, and the oil outlet of the solenoid ball valve is connected to the cylinder that controls the directional valve cover. The solenoid ball valve has high control precision and can accurately adjust the opening of the directional valve cover. During oil return, the oil pressure in the main oil circuit can be reduced smoothly, controlling the bracket to smoothly lift the parts out of the electroplating tank. It is understood that the oil inlet regulating device controller 5 can also be an electric valve, pneumatic valve, directional valve, or other control device capable of controlling the opening and closing of the throttle valve cover.

[0038] like Figure 1 As shown, the oil inlet regulating device 4 is equipped with an oil inlet pressure gauge 3 at the oil inlet end, and the oil return device 8 is equipped with an oil return pressure gauge 7 at the oil inlet end.

[0039] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of ​​this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A safe hydraulic control system, characterized in that: It includes a main oil circuit for controlling the hanger, the oil inlet of the main oil circuit is connected to the oil outlet of the oil supply pump (1), the oil outlet of the main oil circuit is connected to the oil cylinder for controlling the hanger, and a pressure-holding check valve (6) is provided on the main oil circuit to prevent the oil in the main oil circuit from flowing back. An oil inlet regulating device (4) for adjusting the oil flow is provided on the main oil line between the oil inlet end of the main oil line and the pressure holding check valve (6). The oil inlet end of the oil inlet regulating device (4) is close to the oil inlet end of the main oil line, and the oil outlet end of the oil inlet regulating device (4) is close to the pressure holding check valve (6). The oil inlet of the return oil circuit is connected to the main oil circuit between the oil outlet of the main oil circuit and the pressure-holding check valve (6). The oil outlet of the return oil circuit is connected to the oil return end of the oil tank. The return oil circuit is equipped with a return oil device (8) to control the opening and closing of the return oil circuit. A pressure regulating device (2) for adjusting hydraulic pressure is provided between the oil inlet end of the main oil circuit and the oil inlet regulating device (4). The pressure regulating device (2) is an overflow valve. The oil inlet end of the pressure regulating oil circuit is connected to the main oil circuit between the oil inlet end of the main oil circuit and the oil inlet end of the oil inlet regulating device (4). The oil outlet end of the pressure regulating oil circuit is connected to the oil inlet end of the overflow valve.

2. The safe hydraulic control system according to claim 1, characterized in that: It also includes an oil inlet regulating device controller (5) for controlling the opening and closing of the oil inlet regulating device (4).

3. The safe hydraulic control system according to claim 2, characterized in that: The oil inlet regulating device (4) is a throttle valve. The throttle valve is provided with a throttle valve cover plate for controlling the opening and closing of the throttle valve. The working end of the oil inlet regulating device controller (5) is connected to the throttle valve cover plate. The working end of the oil inlet regulating device controller (5) is used to drive the opening and closing of the throttle valve cover.

4. The safe hydraulic control system according to claim 3, characterized in that: The oil inlet regulating device controller (5) is a reversing valve. The oil inlet end of the reversing valve is connected to the main oil circuit between the oil inlet end of the main oil circuit and the throttle valve. The oil outlet end of the reversing valve is connected to the oil cylinder that controls the throttle valve cover plate.

5. The safe hydraulic control system according to claim 1, characterized in that: It also includes a return oil device controller (9) for controlling the opening and closing of the return oil device (8).

6. The safety hydraulic control system according to claim 5, characterized in that: The return oil device (8) is a directional valve, and a directional valve cover plate is provided on the directional valve for controlling the opening and closing of the directional valve. The working end of the return oil device controller (9) is connected to the directional valve cover plate, and the working end of the return oil device controller (9) is used to drive the opening and closing of the directional valve cover plate.

7. The safe hydraulic control system according to claim 6, characterized in that: The return oil device controller (9) is an electromagnetic ball valve. The oil inlet of the electromagnetic ball valve is connected to the return oil circuit, and the oil outlet of the electromagnetic ball valve is connected to the oil cylinder that controls the directional valve cover.

8. The safe hydraulic control system according to claim 1, characterized in that: The oil inlet regulating device (4) is equipped with an oil inlet pressure gauge (3) at the oil inlet end, and the oil return device (8) is equipped with an oil return pressure gauge (7) at the oil inlet end.

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