A control method for a remote control system of an oil cylinder exhaust

Abstract

The present invention discloses a control method for a remote control system for oil cylinder exhaust, comprising an exhaust valve connected to the oil cylinder, an oil return tank connected to the exhaust valve, and a control electric box capable of controlling the exhaust valve to open or close; a central channel is provided in the exhaust valve along its axial direction, an oil return channel and a sensor channel connected to the central channel are provided on the side of the exhaust valve, the oil return channel is connected to the oil return tank, a liquid level sensor for monitoring the oil height inside the exhaust valve is installed in the sensor channel, the central channel is connected to the oil cylinder, and an opening and closing mechanism driven by a motor to control the opening or closing of the central channel is provided in the central channel. The present invention designs a remotely controllable oil cylinder refueling and exhaust system based on the exhaust valve, and realizes automatic control of exhaust during the oil cylinder refueling process through structures such as sensors, single-chip microcomputers, and control electric boxes, so that the exhaust demand of the oil cylinder can be realized without manual operation and intervention. The number of personnel working at high altitudes and safety hazards are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of oil cylinder electronic control, and in particular to a control method of a remote control system for oil cylinder exhaust. Background Art

[0002] Existing pile-driving boat oil cylinders generally have exhaust points at the high points of the two action chambers, and exhaust hoses are connected for exhaust operations. Based on the installation position of the pile frame, the exhaust point of the rod chamber of the variable-length oil cylinder is often set at the top of the oil cylinder body. Even in the state of the pile frame, the exhaust point is more than 10 meters away from the deck. The staff can only reach the top of the cylinder body through the ladder on the oil cylinder, or use a crane basket to go to the top of the cylinder body for exhaust operations, which greatly increases the difficulty of the exhaust operation and the risk factor of the operators. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the above-mentioned background technology and provide a control method for a remote control system of oil cylinder exhaust that can complete the oil cylinder exhaust operation without the need for personnel to work at high altitude.

[0004] To achieve this object, the remote control system for cylinder exhaust designed in the present invention includes an exhaust valve connected to the cylinder, an oil return tank connected to the exhaust valve, and a control electrical box that can control the exhaust valve to open or close; a central channel is opened in the exhaust valve along its axial direction, and an oil return channel and a sensor channel connected to the central channel are opened on the side of the exhaust valve, the oil return channel is connected to the oil return tank, and a liquid level sensor for monitoring the oil height inside the exhaust valve is installed in the sensor channel, the central channel is connected to the cylinder, and an opening and closing mechanism that is driven by a motor to control the opening or closing of the central channel is provided in the central channel.

[0005] Furthermore, the oil return channel and the sensor channel are coaxially arranged.

[0006] Furthermore, the exhaust valve includes a valve body; the middle part of the valve body is coaxially fixed in a cylindrical joint, the valve body is provided with the central channel along its axial direction, the oil pipe joint and the sensor joint are respectively fixed on the left and right sides of the joint, the oil pipe joint is provided with the return oil channel along its axial direction, and the sensor joint is provided with the sensor channel along its axial direction; the motor is coaxially fixed to one end of the valve body, and the other end is connected to the top of the oil cylinder.

[0007] The control method of the remote control system for oil cylinder exhaust based on the above-mentioned method comprises the following steps:

[0008] Step 1: Remote control, by controlling the electric box to drive the motor, the opening and closing mechanism is pushed out and the central channel is opened;

[0009] Step 2: Add oil to the oil cylinder, observe the oil status in the oil tank or monitor the oil pressure in the oil cylinder or monitor the oil height in the exhaust valve;

[0010] Step 3: Determine whether the cylinder has been refueled based on the oil status in the return tank, the oil pressure in the cylinder, or the oil height in the exhaust valve. If completed, remotely control the control box to cut off the power supply of the cylinder refueling equipment and drive the motor to move, the opening and closing mechanism retracts, and the central channel is closed.

[0011] Furthermore, in step three, if the oil entering the oil return tank is in a foamy state, continue to add oil to the oil cylinder; if the oil entering the oil return tank is hydraulic oil without oil foam, stop adding oil to the oil cylinder.

[0012] Furthermore, in step three, if the oil pressure in the oil cylinder reaches a set value, refueling the oil cylinder is stopped.

[0013] Furthermore, in step three, if the oil level in the exhaust valve reaches a set value, refueling the oil cylinder is stopped.

[0014] Furthermore, the automatic control method for stopping refueling in the oil cylinder if the oil pressure in the oil cylinder reaches a set value is: connecting the oil pressure sensor of the oil cylinder to the single-chip microcomputer, connecting the power supply of the oil cylinder refueling equipment to the control electrical box, the single-chip microcomputer obtains the oil pressure in the oil cylinder according to the pressure signal of the oil pressure sensor, and determines whether the oil pressure in the oil cylinder has reached the set value. If reached, the power supply of the oil cylinder refueling equipment is cut off through the control electrical box and the motor is driven to move, the opening and closing mechanism is retracted, and the central channel is closed.

[0015] Furthermore, the automatic control method for stopping refueling into the oil cylinder if the oil level in the exhaust valve reaches a set value is as follows: the liquid level sensor is connected to the single-chip microcomputer, the power supply of the oil cylinder refueling equipment is connected to the control electrical box, the single-chip microcomputer obtains the oil level inside the exhaust valve according to the liquid level height signal of the liquid level sensor, and determines whether the oil level inside the exhaust valve reaches the set value. If reached, the power supply of the oil cylinder refueling equipment is cut off by the control electrical box and the motor is driven to move, the opening and closing mechanism is retracted, and the central channel is closed.

[0016] Furthermore, in the process of controlling the operation of the electric box to drive the motor to push out the opening and closing mechanism, the working state of the motor is monitored. If the motor continues to work for T time and still fails to push out the opening and closing mechanism, the opening and closing mechanism is retracted by remote control by controlling the operation of the electric box to drive the motor.

[0017] The beneficial effects of the present invention are as follows: the present invention designs a remotely controllable oil cylinder refueling exhaust system based on the exhaust valve, and realizes automatic control of exhaust during oil cylinder refueling through structures such as sensors, single-chip microcomputers, and control electric boxes, so that the exhaust requirements of the oil cylinder can be met without manual operation and intervention. In addition, the working stability of each component is effectively guaranteed, the number of high-altitude operations by personnel is reduced, and the safety hazards of manual high-altitude operations are reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic diagram of the structure of the remote control system for oil cylinder exhaust designed by the present invention;

[0019] Figure 2 is a three-dimensional diagram of the exhaust valve in the present invention;

[0020] Figure 3 It is a front view of the exhaust valve in the present invention;

[0021] Figure 4 for Figure 3 Middle AA section view;

[0022] Among them, 1—oil cylinder, 2—exhaust valve (2.1—valve body, 2.2—connector), 3—return oil tank, 4—control electric box, 5—central channel, 6—return oil channel, 7—sensor channel, 8—liquid level sensor, 9—motor, 10—oil pipe connector, 11—sensor connector, 12—hose, 13—return oil pipe, 14—valve stem, 15—valve disc, 16—spring. DETAILED DESCRIPTION

[0023] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1 The remote control system for oil cylinder exhaust shown includes an exhaust valve 2 connected to the oil cylinder 1, an oil return tank 3 connected to the exhaust valve 2, and a control electric box 4 which can control the exhaust valve 2 to open or close.

[0025] like Figure 2As shown in FIG. 4 , the exhaust valve 2 includes a valve body 2.1; the middle part of the valve body 2.1 is coaxially fixed in a cylindrical joint 2.2, the valve body 2.1 is provided with a central channel 5 along its axial direction, a pipe joint 10 and a sensor joint 11 are respectively fixed on the left and right sides of the joint 2.2, an oil return channel 6 is provided in the pipe joint 10 along its axial direction, a sensor channel 7 is provided in the sensor joint 11 along its axial direction, the oil return channel 6 and the sensor channel 7 are coaxially arranged and both are arranged perpendicularly to the central channel 5. A motor 9 is coaxially fixed to one end of the valve body 2.1, and the other end is connected to the top of the oil cylinder 1 (the central channel 5 is connected to the oil cylinder 1). The oil return channel 6 is connected to the oil return tank 3 through a hose 12 and an oil return pipe 13, a liquid level sensor 8 for monitoring the oil height inside the exhaust valve 2 is installed in the sensor channel 7, and an opening and closing mechanism is provided in the central channel 5, which is driven by the motor 9 to control the opening or closing of the central channel 5. The opening and closing mechanism includes a valve stem 14 coaxially fixed to the motor shaft of the motor 9, a valve flap 15 coaxially fixed to the valve stem 14, and a spring 16 for assisting in driving the valve stem 14 and the valve flap 15 to return to their original position.

[0026] Compared with the traditional manual exhaust pressure measuring joint, the present invention adds a large part of the electronic control technology, upgrading the simple mechanical structure to a multifunctional and multi-module combination of mechanical and electronic control, and uses the main control microcontroller to connect many single control modules to achieve a multifunctional combination.

[0027] The remote control system for oil cylinder exhaust designed by the present invention can be applied to the scene of initial refueling of oil cylinder 1 and the scene of refueling during the transfer of pile driving ship or ship maintenance. The following is an example of the scene of initial refueling of oil cylinder 1:

[0028] The complete process of the first refueling of the oil cylinder 1 is as follows: before refueling, press the "△" on the remote control to start the motor 9 to push out the valve stem 14, open the central channel 5, and open the exhaust 2; turn on the power of the oil cylinder refueling equipment to refuel the oil cylinder 1; when the refueling of the oil cylinder 1 is close to or reaches the predetermined time, the oil foam will overflow to the hose 12 and the return oil pipe 13 through the return oil channel 6, and then reach the return oil tank 3 along the return oil pipe 13. At this time, the state of the oil foam at the end of the return oil pipe 13 can be observed. If the return oil pipe 13 discharges oil foam, it is necessary to continue refueling. If the hydraulic oil discharged is oil foam-free hydraulic oil, it is ready to stop refueling. Press the "▽" on the remote control to start the motor 9 to retract the valve stem 14 and close the central channel 5; refuel slowly and observe the oil pressure gauge or oil level gauge of the oil cylinder 1 until the oil pressure and oil level parameters in the oil cylinder 1 reach the predetermined values, and then stop refueling.

[0029] If it is inconvenient to refuel manually due to weather reasons, the power supply of the refueling equipment can be connected to the control box 4, and the single-chip microcomputer of the exhaust 2 can be used to control the closing function of the refueling equipment. When the liquid level sensor 8 starts and sends a signal to the single-chip microcomputer of the exhaust valve 2, the single-chip microcomputer will also give a closing signal, so that the relay in the control box 4 is disconnected, and the power supply of the refueling equipment is cut off, so as to realize the remote closing function of refueling. Specifically, the delay time of the single-chip microcomputer giving the closing signal can be adjusted according to the oil pressure in the oil cylinder 1 to ensure that the oil pressure meets the working requirements. In addition to the automatic control of the liquid level sensor 8, the oil pressure sensor system inside the oil cylinder 1 can also be connected to the single-chip microcomputer to provide more accurate opening and closing signals to the exhaust valve control system. After adding a Bluetooth module to the interface of the single-chip microcomputer, the mobile phone can download the remote control app to view the working status information, pressure conditions, and closing conditions of the refueling equipment of the exhaust valve 2 in real time.

[0030] One system is equipped with two remote controllers to prevent one remote controller from falling or being lost. There is a button control system inside the control box 4. The red button controls the motor 9 to push out the valve stem (press twice continuously when opening to prevent wrong pressing). After the motor 9 drives the valve stem to extend and open to the maximum, the motor 9 automatically shuts down and the indicator light comes on. If the indicator light does not come on after the motor 9 has been working for five minutes (ie T) (the air pressure is too high to open), the motor 9 must be protected. The single chip will automatically control the control box 4 to shut down the motor 9, or press the yellow button to retract the motor 9 to the valve stem 14 (press twice continuously to prevent wrong pressing), so that the valve body is sealed and the indicator light comes on.

[0031] In case of power failure, the remote control system should have a backup emergency battery, which is continuously charged when the power is on. In case of power failure, the backup battery will automatically switch to supply power to the inside of the device, and can achieve two or three normal opening and closing actions to ensure the normal operation of the exhaust of the oil cylinder 1 in case of power failure or special circumstances.

[0032] Extended functions of the single-chip microcomputer: 1. Use the free interface of the single-chip microcomputer to connect the power supply system of the refueling equipment to control the shutdown of the refueling equipment; 2. Use the free interface of the single-chip microcomputer to connect the pressure sensor system inside the oil cylinder 1 to accurately control the opening and closing of the exhaust valve 2; 3. Use the free interface of the single-chip microcomputer to add a Bluetooth module, and use a mobile phone or other display device to install an app to view the working status information of the exhaust valve 2 and the working status information of other extended functions in real time.

[0033] In summary, the present invention designs a remotely controllable oil cylinder refueling exhaust system based on the exhaust valve 2, and realizes automatic control of exhaust during the refueling process of the oil cylinder 1 through structures such as sensors, single-chip microcomputers, and control electric boxes 4, so that the exhaust requirements of the oil cylinder 1 can be met without manual operation and intervention. In addition, the working stability of each component is effectively guaranteed, the number of high-altitude operations by personnel is reduced, and the safety hazards of manual high-altitude operations are reduced.

[0034] The above is only a preferred embodiment of the present invention, and does not limit the structure of the present invention in any form. Any simple modification, equivalent change and modification made to the above embodiment according to the technical essence of the present invention still falls within the scope of the technical solution of the present invention.

Claims

1. A control method for a remote control system of an oil cylinder exhaust, characterized in that: The remote control system for oil cylinder exhaust comprises an exhaust valve (2) connected to the oil cylinder (1), an oil return tank (3) connected to the exhaust valve (2), and a control electric box (4) capable of controlling the exhaust valve (2) to open or close. A central channel (5) is provided in the exhaust valve (2) along its axial direction, and a return oil channel (6) and a sensor channel (7) are provided on the side of the exhaust valve (2) and are communicated with the central channel (5). The return oil channel (6) is communicated with the return oil tank (3), and a level sensor (8) for monitoring the oil level inside the exhaust valve (2) is installed in the sensor channel (7). The central channel (5) is communicated with the oil cylinder (1), and an opening and closing mechanism is provided in the central channel (5) for driving and controlling the opening or closing of the central channel (5) through a motor (9); The control method of the remote control system for oil cylinder exhaust comprises the following steps: Step 1: remote control, by controlling the electric box (4) to drive the motor (9), the opening and closing mechanism is pushed out, and the central channel (5) is opened; Step 2: Add oil to the oil cylinder (1), observe the oil status in the oil return tank (3), or monitor the oil pressure in the oil cylinder (1), or monitor the oil height in the exhaust valve (2); Step 3: judging whether the oil filling of the oil cylinder (1) is completed according to the oil state in the oil return tank (3) or the oil pressure in the oil cylinder (1) or the oil height in the exhaust valve (2); if completed, remote control is performed to cut off the power supply of the oil cylinder filling device through the control electric box (4) and drive the motor (9) to move, the opening and closing mechanism is retracted, and the central channel (5) is closed; In the step 3, if the oil entering the oil return tank (3) is in a foamy state, then refueling into the oil cylinder (1) continues; if the oil entering the oil return tank (3) is hydraulic oil without oil foam, then refueling into the oil cylinder (1) stops; in the step 3, if the oil pressure in the oil cylinder (1) reaches a set value, then refueling into the oil cylinder (1) stops; in the step 3, if the oil height in the exhaust valve (2) reaches a set value, then refueling into the oil cylinder (1) stops; The electric box (4) is controlled to drive the motor (9) to move, and in the process of pushing out the opening and closing mechanism, the working state of the motor (9) is monitored; if the motor (9) continues to work for a time period of T and still fails to push out the opening and closing mechanism, the electric box (4) is controlled to drive the motor (9) to move, and the opening and closing mechanism is retracted by remote control; the oil return channel (6) and the sensor channel (7) are coaxially arranged; the exhaust valve (2) comprises a valve body (2.1); the middle portion of the valve body (2.1) is coaxially fixed to a cylindrical connector In the head (2.2), the valve body (2.1) is provided with the central passage (5) along its axial direction, the left and right sides of the joint (2.2) are respectively fixed with an oil pipe joint (10) and a sensor joint (11), the oil pipe joint (10) is provided with the oil return passage (6) along its axial direction, and the sensor joint (11) is provided with the sensor passage (7) along its axial direction; one end of the valve body (2.1) is coaxially fixed with the motor (9), and the other end is connected to the top of the oil cylinder (1).

2. The control method of the remote control system of the oil cylinder exhaust as claimed in claim 1, characterized in that: The automatic control method for stopping refueling in the oil cylinder (1) if the oil pressure in the oil cylinder (1) reaches a set value comprises: connecting the oil pressure sensor of the oil cylinder (1) to a single chip microcomputer, connecting the power supply of the oil cylinder refueling device to a control electric box (4), the single chip microcomputer obtaining the oil pressure in the oil cylinder (1) according to the pressure signal of the oil pressure sensor, judging whether the oil pressure in the oil cylinder (1) reaches the set value, and if so, cutting off the power supply of the oil cylinder refueling device through the control electric box (4) and driving the motor (9) to operate, retracting the opening and closing mechanism, and closing the central channel (5).

3. The control method of the remote control system of the oil cylinder exhaust as claimed in claim 1, characterized in that: The automatic control method for stopping refueling in the oil cylinder (1) if the oil level in the exhaust valve (2) reaches a set value comprises: connecting a liquid level sensor (8) to a single chip microcomputer, connecting a power supply of the oil cylinder refueling device to a control electric box (4), the single chip microcomputer obtaining the oil level in the exhaust valve (2) according to a liquid level signal from the liquid level sensor (8), judging whether the oil level in the exhaust valve (2) reaches the set value, and if so, cutting off the power supply of the oil cylinder refueling device through the control electric box (4) and driving the motor (9) to operate, thereby retracting the opening and closing mechanism and closing the central channel (5).

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