A Hydraulic Circuit Hybrid Proportional Control Feedback System for Wire Rope Winches

Abstract

This utility model relates to a hybrid proportional control feedback system for a wire rope winch hydraulic circuit, comprising a hydraulic module, a switching module, and a monitoring feedback module. The hydraulic module includes an oil pump, an oil tank, a control valve group, a hydraulic motor, and an adjustable flow valve. The two ends of the oil pump are connected to the oil tank and the control valve group's oil circuits, respectively. The control valve group is connected to the hydraulic motor and the adjustable flow valve's oil circuits, respectively. The switching module is electrically connected to the control valve group and includes a three-position switch and a two-position reset switch. The monitoring feedback module includes a controller, a display screen, and a speed encoder. The controller is electrically connected to the hydraulic motor, which drives the winch. The speed encoder is in contact with the wire rope on the winch. This utility model is applicable to wire rope winches, adding a speed monitoring feedback mechanism to the hydraulic system to adjust the wire rope's traction speed in real time, obtaining a traction force matching the load, and flexibly adjusting to reduce construction accidents.

Description

Technical Field

[0001] This utility model relates to a hydraulic feedback system, specifically to a hybrid proportional control feedback system for a wire rope winch hydraulic circuit. Background Technology

[0002] When conducting core sampling in hard rock formations or during trenchless directional drilling, accident handling is required. When retrieving drill bits, pipes, or other components that have fallen into the borehole, it is often necessary to use a winch to pull back the wire rope in order to bring the rock sample from the rock formation or the drill bits, pipes, or other components to be retrieved from the trenchless borehole to the surface.

[0003] In conventional winches, the winch is manually controlled to pull back the wire rope. There is no feedback adjustment mechanism, so it is impossible to monitor changes in parameters such as the traction force and pulling speed of the wire rope in real time. Therefore, it is impossible to adjust the speed of the wire rope driven by the winch in real time based on the changes in the feedback parameters.

[0004] In this case, the operator can only stop the machine for inspection when they hear abnormal noises or notice abnormal vibrations from the winch, but it is often too late, an accident may have already occurred, and engineering losses are difficult to avoid. Utility Model Content

[0005] The purpose of this utility model is:

[0006] Design a hydraulic circuit hybrid proportional control feedback system for wire rope winches, suitable for winches with wire ropes. In addition, a speed monitoring feedback mechanism is added to the hydraulic system to adjust the traction speed of the wire rope in real time, thereby obtaining a traction force that matches the load and flexibly adjusting to reduce construction accidents.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A hybrid proportional control feedback system for a wire rope winch hydraulic circuit includes a hydraulic module, a switching module, and a monitoring feedback module. The hydraulic module includes an oil pump, an oil tank, a control valve group, a hydraulic motor, and an adjustable flow valve. The two ends of the oil pump are connected to the oil tank and the control valve group's oil circuits, respectively. The control valve group is connected to the hydraulic motor and the adjustable flow valve's oil circuits, respectively. The switching module is electrically connected to the control valve group and includes a three-position switch and a two-position reset switch. The monitoring feedback module includes a controller, a display screen, and a speed encoder. The controller is electrically connected to the hydraulic motor, which drives the winch. The speed encoder is in contact with the wire rope on the winch.

[0009] Furthermore, the control valve assembly includes a bidirectional solenoid valve and a one-way solenoid valve; the one-way solenoid valve, the hydraulic motor, and the adjustable flow valve are all connected to the oil circuit of the bidirectional solenoid valve.

[0010] Furthermore, the one-way solenoid valve is connected in parallel with the hydraulic motor; the adjustable flow valve is connected in series with the hydraulic motor.

[0011] Furthermore, the three-positioning switch is electrically connected to the forward coil of the bidirectional solenoid valve and the coil of the one-way solenoid valve; the two-position reset switch is electrically connected to the reverse coil of the bidirectional solenoid valve.

[0012] Furthermore, the bidirectional solenoid valve is a three-position four-way solenoid directional valve; the one-way solenoid valve is a two-position two-way solenoid valve.

[0013] Furthermore, the output end of the hydraulic motor is connected to the winding drum on the winch to drive the winding drum of the winch to rotate in the forward or reverse direction.

[0014] Furthermore, the controller is electrically connected to the display screen and the speed encoder; the speed encoder is located on the winch and is used to monitor the winding and unwinding speed of the wire rope.

[0015] The beneficial effects of this utility model are as follows:

[0016] A hybrid proportional control feedback system for hydraulic circuits in wire rope winches is disclosed. This system is suitable for winches with wire ropes and incorporates a speed monitoring and feedback mechanism into the hydraulic system. It transmits data such as the power, flow rate, and torque of the hydraulic motor, as well as the speed data of the wire rope, to the controller. The controller adjusts the displacement of the hydraulic motor based on the data, thereby adjusting the traction speed of the wire rope in real time according to actual needs. This achieves a traction force matching the load and allows for flexible adjustment to cope with multiple working conditions, reducing construction accidents. Furthermore, a safety redundancy design allows for emergency rope release when necessary, enhancing safety. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the principle of a hydraulic circuit hybrid proportional control feedback system for a wire rope winch according to this utility model.

[0018] Figure 2 This is a schematic block diagram showing the connection of the control module of a hydraulic circuit hybrid proportional control feedback system for a wire rope winch according to this utility model.

[0019] The attached figures are labeled as follows:

[0020] 1. Hydraulic module; 11. Oil pump; 12. Oil tank; 13. Control valve group; 131. Two-way solenoid valve; 132. One-way solenoid valve; 14. Hydraulic motor; 15. Adjustable flow valve;

[0021] 2. Switch module; 21. Three-position positioning switch; 22. Two-position reset switch;

[0022] 3. Monitoring and feedback module; 31. Controller; 32. Display screen; 33. Speed ​​encoder;

[0023] 4. Winch; 41. Wire rope. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this utility model.

[0025] refer to Figures 1 to 2 A hydraulic circuit hybrid proportional control feedback system for a wire rope winch includes a hydraulic module 1, a switch module 2, and a monitoring and feedback module 3. The hydraulic module 1 is used to drive the winch 4 to operate; the switch module 2 is used for manual control; and the monitoring and feedback module 3 is used to monitor the operation of the hydraulic module 1 and the wire rope 41 of the winch 4 to form feedback.

[0026] The hydraulic module 1 includes an oil pump 11, an oil tank 12, a control valve assembly 13, a hydraulic motor 14, and an adjustable flow valve 15. The two ends of the oil pump 11 are connected to the oil tank 12 and the control valve assembly 13 respectively. The control valve assembly 13 is connected to the hydraulic motor 14 and the adjustable flow valve 15 respectively. The oil tank 12 is used for oil supply. The oil pump 11 draws hydraulic oil from the oil tank 12 and supplies it to the control valve assembly 13.

[0027] The switch module 2 is electrically connected to the control valve group 13. The switch module 2 includes a three-position positioning switch 21 and a two-position reset switch 22. Both the three-position positioning switch 21 and the two-position reset switch 22 are used to control the direction of the oil, thereby realizing the motion control of the wire rope 41.

[0028] The monitoring feedback module 3 includes a controller 31, a display screen 32, and a speed encoder 33. The controller 31 is electrically connected to the hydraulic motor 14, which drives the winch 4. The speed encoder 33 is in contact with the wire rope 41 on the winch 4 to monitor the moving speed of the wire rope 41 on the winch 4.

[0029] The control valve assembly 13 includes a two-way solenoid valve 131 and a one-way solenoid valve 132; the two-way solenoid valve 131 is connected to the oil pump 11 and the oil tank 12.

[0030] The one-way solenoid valve 132, the hydraulic motor 14, and the adjustable flow valve 15 are all connected to the oil circuit of the two-way solenoid valve 131.

[0031] One-way solenoid valve 132 is connected in parallel with hydraulic motor 14 to control the hydraulic oil flowing through hydraulic motor 14, so that hydraulic motor 14 can work or not work. When it is not working, the output end of hydraulic motor 14 has no power output and reverses under the action of wire rope 41, and wire rope 41 releases rope. Adjustable flow valve 15 is connected in series with hydraulic motor 14 and is used to regulate the hydraulic oil flowing through hydraulic motor 14.

[0032] The three-positioning switch 21 is electrically connected to the forward coil of the bidirectional solenoid valve 131 and the coil of the one-way solenoid valve 132; the two-position reset switch 22 is electrically connected to the reverse coil of the bidirectional solenoid valve 131.

[0033] The two-way solenoid valve 131 is a three-position four-way solenoid directional valve; the one-way solenoid valve 132 is a two-position two-way solenoid valve.

[0034] The output end of the hydraulic motor 14 is connected to the winding drum on the winch 4 to drive the winding drum of the winch 4 to rotate in the forward or reverse direction. The output torque of the hydraulic motor 14 is relatively large to meet the power requirements of the winding drum of the winch 4.

[0035] The controller 31 is electrically connected to the display screen 32 and the speed encoder 33. The display screen 32 is used to display data. The speed encoder 33 is located on the winch 4 and is used to monitor the winding and unwinding speed of the wire rope 41.

[0036] The specific working principle of the hydraulic circuit hybrid proportional control feedback system for a wire rope winch of this utility model is as follows:

[0037] A proportional control system adapted to a wire rope winch is disclosed, specifically employing a combined hydraulic and electrical proportional control method. A real-time feedback loop is incorporated into the system to adjust the traction speed of the wire rope 41 in reverse order, matching it to the load. This technical solution mainly includes a hydraulic module 1, a switch module 2, a monitoring and feedback module 3, and a matching winch 4.

[0038] Hydraulic module 1 includes a hydraulic oil tank 12, a hydraulic oil pump 11, a set of hydraulic control valve group 13, a hydraulic motor 14 and an adjustable flow valve 15 connected in sequence through hydraulic pipelines; switch module 2 includes a three-position positioning switch 21 and a two-position reset switch 22; monitoring and feedback module 3 involves a speed encoder 33, a controller 31 and a display screen 32.

[0039] The oil pump 11 draws hydraulic oil from the oil tank 12 connected to it and delivers it to the hydraulic system pipeline of this technical solution. It then reaches the hydraulic motor 14 through the control valve group 13. The hydraulic motor 14 operates, drives the winch 4, and drives the wire rope 41 to perform the action of pulling back or releasing the rope.

[0040] The hydraulic control valve assembly 13 includes two solenoid valves, which are connected to the three-position positioning switch 21 and the two-position reset switch 22 via circuitry, together forming an effective solenoid valve control assembly.

[0041] The hydraulic control valve group 13 contains two solenoid valves, a two-way solenoid valve 131 and a one-way solenoid valve 132, a three-position positioning switch 21 as a positioning switch, and a two-position reset switch 22 as a reset switch.

[0042] The two-way solenoid valve 131 has solenoid coils at both ends, one for forward rotation and one for reverse rotation, which control the hydraulic motor 14 to rotate forward and reverse, thereby controlling the winch 4 to rotate forward to pull back the wire rope 41 or reverse to release the rope 42. The one-way solenoid valve 132 has only one solenoid coil, which controls the winch 4 to release the rope freely.

[0043] The positions at both ends of the three-position switch 21 are connected to the forward coil of the bidirectional solenoid valve 131 and the coil of the one-way solenoid valve 132 respectively through the circuit, thereby controlling the winch 4 to rotate forward to pull back the wire rope 41 and to release the rope freely.

[0044] Forward rotation and pulling back the wire rope 41 is a routine operation when the winch 4 is working normally. Free rope release is the operation of the winch 4 running unloaded and lowering the wire rope 41 to the bottom of the hole. Both of these operations are controlled by the three-position positioning switch 21. The three-position positioning switch 21 is a positioning switch. During the execution of the specified operation, the switch always stays in the fixed position to ensure the continuity of the operation and reduce the labor intensity of the operator.

[0045] The two-position reset switch 22 is connected to the reverse coil of the bidirectional solenoid valve 131 via a circuit, controlling the winch 4 to reverse and release the rope. Reverse rope release is usually used to deal with sudden emergency situations in the borehole. The two-position reset switch 22 is a reset switch. When the switch is pressed, the winch 4 performs a reverse emergency rope release action. When the switch is released, it automatically resets, and the emergency rope release action ends, avoiding excessive rope release that delays the work process.

[0046] The speed encoder 33 is in close contact with the wire rope 41. After the encoder measures the traction speed of the wire rope 41, the speed encoder 33 feeds back the speed data to the controller 31.

[0047] The hydraulic motor 14 is a variable displacement motor. There is a feedback circuit between the hydraulic motor 14 and the controller 31. The displacement of the hydraulic motor 14 can be adjusted according to the speed data fed back by the controller 31. The change of the displacement of the hydraulic motor 14 will directly change the torque of the hydraulic motor 14. Under the premise that the output power of the hydraulic motor 14 remains unchanged, the speed of the hydraulic motor 14 will change, which in turn changes the speed at which the winch 4 pulls the wire rope 41.

[0048] The speed encoder 33 provides feedback, and the controller 31 controls the hydraulic motor 14 to change speed, thereby changing the speed of the wire rope 41. Then, the speed encoder 33 measures the speed again, provides feedback again, and changes speed again, forming a closed-loop feedback control to ensure the accuracy of the control.

[0049] The controller 31 is connected to the display screen 32. The speed encoder 33 feeds back data to the controller 31 so that the relevant data processed by the controller 31 can be displayed on the display screen 32 in real time, which is convenient for the operator to judge and perform the next operation.

[0050] The hydraulic oil pump 11 is driven by an external engine. It draws hydraulic oil from the oil tank 12 and sends it to the hydraulic system pipeline. After passing through the hydraulic control valve group 13, it reaches the hydraulic motor 14, which drives the hydraulic motor to operate. This, in turn, drives the winch 4 connected to the hydraulic motor 14 to operate, pulling the wire rope 41 wound on the winch 4. The hydraulic motor 14 has two operating directions: forward and reverse. By driving the winch 4 to rotate forward or reverse, it can retrieve objects from the hole or perform rope unwinding operations via the wire rope.

[0051] The hydraulic control valve assembly 13 includes a two-way solenoid valve 131 and a one-way solenoid valve 132, which together with the three-position positioning switch 21 and the two-position reset switch 22 constitute an effective solenoid valve control assembly.

[0052] The three-position switch 21 has three positions: the middle position is the off position, and the two ends are the operating positions. The two operating positions are connected to the forward coil of the two-way solenoid valve 131 and the coil of the one-way solenoid valve 132 respectively via wires, which control the winch 4 to rotate forward to pull back the wire rope or to release the rope freely.

[0053] The two-position reset switch 22 has two positions: a closed position and an activated position. The activated position is connected to the reverse coil of the two-way solenoid valve 131 via a wire, which controls the hydraulic motor 14 to reverse, causing the winch 4 to perform the reverse rope release action.

[0054] When the winch 4 is operating normally, it performs the process of pulling back the wire rope 41, or when the winch 4 is running unloaded and the wire rope 41 is freely lowered to the bottom of the hole without resistance. This is controlled by the three-position positioning switch 21. During the operation, the switch automatically stays in the specified position to ensure the continuity of the winch 4's operation and reduce the labor intensity of the operator.

[0055] The reverse rope release is a response to unexpected situations when pulling the wire rope 41. When the wire rope 41 becomes stuck and cannot be pulled, the two-position reset switch 22 can be pressed to initiate the emergency reverse rope release. The two-position reset switch 22 is a reset switch. After the emergency rope release returns the wire rope 41 to its previous position, releasing the two-position reset switch 22 will automatically reset it, ending the emergency rope release action and preventing excessive rope release from delaying the work process.

[0056] The speed encoder 33 is in close contact with the wire rope 41 and can monitor the pulling speed of the wire rope 41 in real time.

[0057] The speed encoder 33 is connected to the electronic controller 31 and transmits the detected wire rope pulling speed to the electronic controller 31 in real time.

[0058] The electronic controller 31 is also connected to the hydraulic motor 14, and there is a feedback circuit between the two to feed back the speed and other data received by the controller 31 to the hydraulic motor 14 in real time.

[0059] The hydraulic motor 14 is a variable displacement motor with multiple displacement settings. It can automatically switch the required displacement setting in real time based on the speed data transmitted from the controller 31. The change in the displacement of the hydraulic motor 14 will directly change the output torque of the hydraulic motor 14, thereby changing the tension on the wire rope 41. This matches the changes in load or resistance in the borehole, ensuring that the winch 4 can cope with load changes in the borehole and maintain normal operation.

[0060] Assuming the output power of the hydraulic motor 14 remains constant, the output speed of the hydraulic motor 14 is inversely proportional to its torque. When the resistance inside the borehole increases and the pulling speed of the wire rope 41 slows down, the hydraulic motor 14 will switch to a higher displacement gear, increasing the output torque of the motor and thus increasing the traction force on the wire rope 41 to match the increased resistance in the borehole. At the same time, as the motor torque increases, the corresponding output speed of the motor decreases, corresponding to the slower pulling speed of the wire rope 41.

[0061] The above embodiments are used to further illustrate the present invention, but do not limit the present invention to these specific embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be understood as being within the protection scope of the present invention.

Claims

1. A hydraulic circuit hybrid proportional control feedback system for a wire rope winch, characterized in that: The system includes a hydraulic module (1), a switch module (2), and a monitoring and feedback module (3). The hydraulic module (1) includes an oil pump (11), an oil tank (12), a control valve group (13), a hydraulic motor (14), and an adjustable flow valve (15). The two ends of the oil pump (11) are connected to the oil tank (12) and the control valve group (13) respectively. The control valve group (13) is connected to the hydraulic motor (14) and the adjustable flow valve (15) respectively. The switch module (2) is electrically connected to the control valve group (13). The switch module (2) includes a three-position switch (21) and a two-position reset switch (22). The monitoring and feedback module (3) includes a controller (31), a display screen (32), and a speed encoder (33). The controller (31) is electrically connected to the hydraulic motor (14). The hydraulic motor (14) drives the winch (4). The speed encoder (33) is in contact with the wire rope (41) on the winch (4).

2. The hydraulic circuit hybrid proportional control feedback system for a wire rope winch according to claim 1, characterized in that: The control valve group (13) includes a two-way solenoid valve (131) and a one-way solenoid valve (132); the one-way solenoid valve (132), the hydraulic motor (14) and the adjustable flow valve (15) are all connected to the oil circuit of the two-way solenoid valve (131).

3. The hydraulic circuit hybrid proportional control feedback system for a wire rope winch according to claim 2, characterized in that: The one-way solenoid valve (132) is connected in parallel with the hydraulic motor (14); the adjustable flow valve (15) is connected in series with the hydraulic motor (14).

4. The hydraulic circuit hybrid proportional control feedback system for a wire rope winch according to claim 3, characterized in that: The three-positioning switch (21) is electrically connected to the forward coil of the bidirectional solenoid valve (131) and the coil of the one-way solenoid valve (132); the two-position reset switch (22) is electrically connected to the reverse coil of the bidirectional solenoid valve (131).

5. The hydraulic circuit hybrid proportional control feedback system for a wire rope winch according to claim 4, characterized in that: The bidirectional solenoid valve (131) is a three-position four-way solenoid valve; the one-way solenoid valve (132) is a two-position two-way solenoid valve.

6. A hydraulic circuit hybrid proportional control feedback system for a wire rope winch according to any one of claims 1-5, characterized in that: The output end of the hydraulic motor (14) is connected to the winding drum on the winch (4) to drive the winding drum of the winch (4) to rotate in the forward or reverse direction.

7. The hydraulic circuit hybrid proportional control feedback system for a wire rope winch according to claim 6, characterized in that: The controller (31) is electrically connected to the display screen (32) and the speed encoder (33); the speed encoder (33) is located on the winch (4) and is used to monitor the winding and unwinding speed of the wire rope (41).

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