Pinch control system based on hydraulic device

Abstract

The utility model relates to the field of hydraulic devices, in particular to a pinch control system based on a hydraulic device, which comprises a central block, an oil tank and a gear pump are fixedly mounted on the left side of the central block, the gear pump is positioned in the oil tank, and a motor is arranged on the right side of the central block. An output shaft of the motor penetrates through the central block and is in transmission connection with a driving gear of the gear pump; a first oil port, a second oil port and a third oil port are formed in the left side of the center block, and the first oil port is communicated with an oil outlet of the gear pump; a conversion block is installed at the top of the center block, a valve block is installed at the top of the conversion block, and a first oil way and a second oil way are formed in the center block, the conversion block and the valve block. At present, a pinch control system for controlling two hydraulic motors in a cable conveyor does not exist, and the pinch control system based on the hydraulic device can be used for controlling the two hydraulic motors in the cable conveyor.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic devices, specifically to a clamping control system based on a hydraulic device. Background Technology

[0002] A cable conveyor is a device used for laying cables, enabling the cable to be transported along a predetermined path while clamped. A common structure, as shown in patent document CN2132727 entitled "A Cable Conveyor," includes two tracks that directly contact the cable and propel it forward or backward. The cable is positioned between the two tracks, and the tracks are rotated by two motors and transmission components. When conveying the cable forward, the track on the left side of the cable's direction of travel typically rotates counter-clockwise, while the track on the right side rotates clockwise, thus transporting the cable forward. When retracting the cable, the track on the left side rotates clockwise, and the track on the right side rotates counter-clockwise.

[0003] Because hydraulic motor drives have a higher power density and are more adaptable to temperature changes compared to electric motor drives, cable conveyors that use hydraulic motors instead of electric motors have emerged. Currently, there is a lack of clamping control systems for controlling the two hydraulic motors in cable conveyors. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a clamping control system based on a hydraulic device for controlling two hydraulic motors in a cable conveyor.

[0005] To solve the above-mentioned technical problems, this utility model provides a clamping control system based on a hydraulic device, including a hydraulic station; the hydraulic station includes a central block, an oil tank and a gear pump are fixedly installed on the left side of the central block, the gear pump is located in the oil tank, a motor is arranged on the right side of the central block, and the output shaft of the motor passes through the central block and is connected to the drive gear of the gear pump; an oil suction pipe is installed at the oil suction port of the gear pump; a first oil port, a second oil port and a third oil port are opened on the upper left side of the central block, the first oil port is connected to the oil outlet of the gear pump; a conversion block is installed on the top of the central block, and the conversion block... A valve block is installed on the top, and a first oil circuit and a second oil circuit are formed in the center block, the conversion block, and the valve block. An overflow valve is installed between the second oil port and the first oil circuit, and a two-position two-way valve is installed between the third oil port and the second oil circuit. A check valve for controlling the flow direction of hydraulic oil in the first oil circuit is installed on the rear side of the center block. A pressure gauge for measuring the pressure value of hydraulic oil at the oil tank outlet is installed on the left side of the top of the valve block. Two proportional valves are installed on the top of the valve block from left to right. The valve block includes two oil outlets, which are connected to the oil inlets of two hydraulic motors through oil pipes.

[0006] As a further improvement of this utility model: a level gauge is installed on the left side of the oil tank, and a level switch and an air filter are installed on the top of the oil tank.

[0007] As a further improvement of this utility model: an oil suction filter is installed at the end of the oil suction pipe away from the gear pump.

[0008] As a further improvement of this utility model: a pressure sensor for monitoring the outlet pressure of the oil tank is installed on the front side of the valve block, and a pressure measuring connector for sampling and pressure detection of the hydraulic oil in the first oil circuit is installed on the rear side of the valve block.

[0009] The beneficial effects of this utility model are as follows: The clamping control system based on a hydraulic device provided by this utility model can be used to control two hydraulic motors in a cable conveyor.

[0010] This utility model includes a hydraulic station connected to two hydraulic motors in a cable conveyor via oil pipes. The two-position two-way valve in the hydraulic station can switch the inlet and outlet directions of the first or second oil circuit to control the forward or reverse rotation of the hydraulic motor. The proportional valve can adjust the pressure and flow rate of the hydraulic oil in the first or second oil circuit to achieve stepless speed regulation with a large speed regulation range, thereby realizing the control of the speed of the hydraulic motor. Therefore, it can realize the control of the two hydraulic motors in the cable conveyor.

[0011] The system has a compact structure, relatively small size, and is easy to move. Its control and adjustment are relatively simple, and it is convenient, labor-saving, and easy to automate.

[0012] The system has strong environmental adaptability. There can be a certain distance between the hydraulic station and the hydraulic motor. Therefore, when the system is used to control the cable conveyor, the cable conveyor can work stably even in a damp, enclosed underground space. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the overall structure of this utility model from another angle;

[0015] Figure 3 This is a top view of the present invention;

[0016] Figure 4 This is the front view of the present invention;

[0017] Figure 5 This is a schematic diagram of the overall structure of the present invention, excluding the fuel tank and the components installed on the fuel tank.

[0018] Figure 6 This is a schematic diagram of the overall structure of the present invention from another angle, excluding the fuel tank and the components installed on the fuel tank.

[0019] Figure 7 This is a schematic diagram of the overall structure of the central block, conversion block, and valve block in this utility model;

[0020] Figure 8 This is a perspective view of the overall structure of the central block, conversion block and valve block in this utility model;

[0021] Figure 9 This is a schematic diagram of the hydraulic station in this utility model;

[0022] Figure 10 This is a schematic diagram of the hydraulic station, pipelines, and two hydraulic motors in this utility model.

[0023] The names of the components corresponding to the markings in the above figures are:

[0024] 1. Center block; 101. First oil port; 102. Second oil port; 103. Third oil port; 104. Throttle valve; 105. Relief valve; 106. Two-position two-way valve; 107. Check valve;

[0025] 2. Oil tank; 201. Level gauge; 202. Level switch; 203. Air filter;

[0026] 3. Motor; 301. Bell jar;

[0027] 4. Gear pump; 401. Suction pipe; 402. Suction filter;

[0028] 5. Conversion block;

[0029] 6. Valve block; 601. Pressure gauge; 602. Proportional valve; 603. Pressure sensor; 604. Pressure test connector;

[0030] 7. Hydraulic motor. Detailed Implementation

[0031] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0032] In this utility model, the directional terms such as "up," "down," "left," "right," "front," "back," "top," and "bottom" are all used in conjunction with... Figure 3 and Figure 4 The direction defined by the central cross-shaped directional marker is the reference. All directional terms in this utility model are described based on this definition and do not change the direction they represent regardless of the angle of the diagram.

[0033] like Figures 1-10As shown, the present invention provides a hydraulic station; the hydraulic station includes a central block 1, also referred to in the art as a power unit central block, which serves as a support and hydraulic oil transfer point. An oil tank 2 and a gear pump 4 are fixedly installed on the left side of the central block 1. The gear pump 4 is located in the oil tank 2 and its purpose is to deliver hydraulic oil to the central block 1 and various oil circuits. A level gauge 201 is installed on the left side of the oil tank 2. The purpose of the level gauge 201 is to observe the change in the oil level in the oil tank 2 in real time. A level switch 202 and an air filter 203 are installed on the top of the oil tank 2. The purpose of the level switch 202 is to monitor the oil level in the oil tank 2 and trigger an alarm. The purpose of the air filter 203 is to filter the interior of the oil tank 2.

[0034] A motor 3 is mounted on the right side of the center block 1 via a bell housing 301. The bell housing 301 protects the output shaft of the motor 3. The output shaft of the motor 3 passes through the center block 1 and is connected to the drive gear of the gear pump 4 via a transmission shaft. An oil suction pipe 401 for drawing oil from the oil tank 2 is installed at the oil suction port of the gear pump 4. An oil suction filter 402 is installed at the end of the oil suction pipe 401 away from the gear pump 4. The oil suction filter 402 filters the hydraulic oil entering the gear pump 4, intercepting particulate impurities and debris in the hydraulic oil, thus providing protection.

[0035] A first oil port 101, a second oil port 102, and a third oil port 103 are provided on the upper left side of the central block 1. The first oil port 101 is connected to the oil outlet of the gear pump 4. A throttle valve 104 is installed in the third oil port 103, which controls the outlet flow rate by controlling the degree of valve closure. A switching block 5 is installed on the top of the central block 1. The function of the switching block 5 is to switch the oil circuit. A valve block 6 is installed on the top of the switching block 5. A first oil circuit L1 and a second oil circuit L2 are formed in the central block 1, the switching block 5, and the valve block 6. The first oil circuit L1 is connected to the first oil port 101, the second oil port 102, and the... Between the two proportional valves 602, the second oil circuit L2 is connected between the third oil port 103 and the two proportional valves 602; an overflow valve 105 is installed between the second oil port 102 and the first oil circuit L1. The function of the overflow valve 105 is to stabilize the pressure and protect the equipment to work continuously and stably. A two-position two-way valve 106 is installed between the third oil port 103 and the second oil circuit L2. The function of the two-position two-way valve 106 is to control the opening and closing of the oil circuit; the overflow valve 105 and the two-position two-way valve 106 are located on the front side of the center block 1, and a one-way valve 107 for controlling the flow direction of hydraulic oil in the first oil circuit L1 is installed on the rear side of the center block 1.

[0036] A pressure gauge 601 is installed on the left side of the top of valve block 6 to measure the pressure of the hydraulic oil at the outlet of oil tank 2. The pressure value of the hydraulic oil at the outlet of oil tank 2 is regarded as the pump station outlet pressure. The pressure gauge 601 and the pressure switch constitute a pressure monitoring component, which is installed on the top of valve block 6. Two proportional valves 602 are installed on the top of valve block 6 from left to right. The proportional valves 602 can adjust the pressure and flow of hydraulic oil in the first oil circuit L1 and the second oil circuit L2 to achieve stepless speed regulation with a large speed regulation range. Valve block 6 includes two oil outlets, which are connected to the oil inlets of two hydraulic motors 7 through oil pipes. A pressure sensor 603 is installed on the front side of valve block 6. The function of pressure sensor 603 is to monitor the real-time pressure value in oil tank 2. A pressure testing connector 604 is installed on the rear side of valve block 6 for sampling and pressure detection of hydraulic oil in the first oil circuit L1.

[0037] The system also includes a PLC control module, which is connected to the motor 3, check valve 107, gear pump 4, two-position two-way valve 106, and proportional valve 602.

[0038] The working principle of this utility model is as follows: Start motor 3, open check valve 107. The output shaft of motor 3 drives the drive gear of gear pump 4 to rotate, and gear pump 4 starts working. Oil from tank 2 is filtered through suction filter 402 and then sucked into suction port through suction pipe 401. From discharge port, it flows into first oil circuit L1 through first oil port 101. During this process, overflow valve 105 is manually adjusted, and pump station pressure is obtained through pressure gauge 601. The pressure of hydraulic oil in first oil circuit L1 is considered as pump station pressure, and the pump station pressure is adjusted accordingly. When the pressure reaches 12 MPa, observe pressure gauge 601. When the pressure reaches the target, start the two-position two-way valve 106, so that the hydraulic oil flows from the second oil port 102 into the second oil circuit L2 through the throttle valve 104. The hydraulic oil flows along the first oil circuit L1 and the second oil circuit L2, passes through the center block 1 and the conversion block 5, and then flows into the valve block 6. The front and rear sides of the valve block 6 are connected to the two hydraulic motors 7 in the cable conveyor through pipes. The hydraulic oil flows into the hydraulic motors 7 and drives the hydraulic motors 7 to rotate, so that the cable conveyor can transport the cable forward.

[0039] The proportional valve 602 adjusts the pressure and flow of the hydraulic oil, thereby controlling the speed of the hydraulic motor 7. The two-position two-way valve 106 is controlled to switch the direction of oil flow, thereby controlling the direction of the hydraulic motor 7 and enabling the cable conveyor to move forward or backward.

[0040] It should be noted that this utility model is not limited to the specific structure shown in the accompanying drawings in the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made to it.

Claims

1. A clamping control system based on a hydraulic device, characterized in that, Including hydraulic power units; The hydraulic station includes a central block (1), an oil tank (2) and a gear pump (4) are fixedly installed on the left side of the central block (1), the gear pump (4) is located in the oil tank (2), and a motor (3) is provided on the right side of the central block (1). The output shaft of the motor (3) passes through the central block (1) and is connected to the drive gear of the gear pump (4) via a transmission. The gear pump (4) is equipped with an oil suction pipe (401) at its suction port; The center block (1) has a first oil port (101), a second oil port (102), and a third oil port (103) on its left side. The first oil port (101) is connected to the oil outlet of the gear pump (4). A conversion block (5) is installed on the top of the central block (1), and a valve block (6) is installed on the top of the conversion block (5). A first oil passage (L1) and a second oil passage (L2) are formed in the central block (1), the conversion block (5) and the valve block (6). An overflow valve (105) is provided between the second oil port (102) and the first oil passage (L1), and a two-position two-way valve (106) is provided between the third oil port (103) and the second oil passage (L2); A check valve (107) for controlling the flow direction of hydraulic oil in the first oil circuit (L1) is installed on the rear side of the central block (1); A pressure gauge (601) for measuring the pressure of hydraulic oil at the outlet of the oil tank (2) is installed on the left side of the top of the valve block (6), and two proportional valves (602) are installed on the top of the valve block (6) from left to right. The valve block (6) includes two oil outlets, which are respectively connected to the oil inlets of two hydraulic motors (7) via oil pipes.

2. The clamping control system based on a hydraulic device according to claim 1, characterized in that, A level gauge (201) is installed on the left side of the oil tank (2), and a level switch (202) and an air filter (203) are installed on the top of the oil tank (2).

3. A clamping control system based on a hydraulic device according to any one of claims 1 to 2, characterized in that, An oil suction filter (402) is installed at the end of the oil suction pipe (401) away from the gear pump (4).

4. A clamping control system based on a hydraulic device according to any one of claims 1 to 2, characterized in that, A pressure sensor (603) for monitoring the outlet pressure of the oil tank (2) is installed on the front side of the valve block (6), and a pressure measuring connector (604) for sampling and pressure detection of the hydraulic oil in the first oil circuit (L1) is installed on the rear side of the valve block (6).

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