Hydraulic shifting fork type executing mechanism
By designing a hydraulic fork-type actuator and utilizing the collaborative work of hydraulic cylinders and cylinders, the problem that existing actuators cannot adapt to complex working environments is solved, and reliable control of valves and high-torque quick response output are achieved.
Patent Information
- Application Number
- CN202420591088.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-26
- Publication Date
- 2025-01-24
- Estimated Expiration
- 2034-03-26
AI Technical Summary
Existing actuators cannot adapt to complex working environments due to the singularity of torque output, especially when the valve needs to provide large torque or close quickly.
A hydraulic fork-type actuator is designed, which can provide large torque and quick response output through the cooperative work of hydraulic cylinders and air cylinders. The actuator includes a mounting base, a rotatable mounting sleeve, a shift fork, an air cylinder and a hydraulic cylinder. It achieves high-precision and high-force movements through the control of hydraulic oil and pneumatic piston.
It achieves reliable control of the valve, can provide large torque and quick response output when needed, adapts to various working environments and emergency situations, and improves the application reliability of the valve.
Smart Images
Figure CN222392091U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an execution component for controlling a valve, in particular to a hydraulic scotch fork type execution mechanism. Background Art
[0002] Some valves require a large torque to be provided by the actuator to open and close the valve, so as to achieve the purpose of automation and precision control of flow. In the process of transmission in coordination with the valve, the actuator needs to adopt different execution methods according to different types of valves. In most cases, the torque required by the valve is small. As the valve is used for a long time or the valve is suitable for various working environments and media, the valve will need to provide a large torque to open and close the valve. At the same time, some valves also need to quickly close the valve in response to emergency situations. Therefore, the existing actuators cannot adapt to complex working environments due to the single torque output. Utility Model Content
[0003] In order to solve the above problems, the purpose of the utility model is to provide a hydraulic scotch yoke actuator that can provide large torque and fast response output, thereby ensuring the reliability of valve application.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a hydraulic scotch fork actuator, comprising a mounting seat, a rotatable mounting sleeve is provided on the mounting seat, a scotch fork is welded on the peripheral wall of the mounting sleeve, a cylinder is installed on one side of the mounting seat, a hydraulic cylinder is installed on the other side of the mounting seat, the hydraulic cylinder has a retractable hydraulic rod, the hydraulic rod is connected to the scotch fork in a transmission manner, the cylinder has a retractable piston rod, the piston rod is connected to the scotch fork in a transmission manner, a guide groove is provided in the mounting seat, a slider movable inside the guide groove is provided in the guide groove, the hydraulic rod penetrates into the guide groove and is connected to one side of the slider, a vertical transmission rod is provided on the other side of the slider, and the vertical transmission rod is placed in the opening of the scotch fork.
[0005] The hydraulic cylinder also includes an outer cylinder, a hydraulic piston is arranged in the outer cylinder, and two oil inlets and outlets are arranged on the outer cylinder. The two oil inlets and outlets are located on both sides of the hydraulic piston. The two oil inlets and outlets are connected to the reversing valve through oil pipes respectively, and the reversing valve is connected to the oil tank through a manual pump.
[0006] The cylinder comprises a cylinder body, in which a pneumatic piston is arranged, a piston rod is connected to the pneumatic piston, an end of the piston rod is rotatably connected to a vertical transmission rod, and the cylinder body is provided with two air inlets and outlets, the two air inlets and outlets are located on both sides of the pneumatic piston, and the two air inlets and outlets are respectively connected to another reversing valve through an air pipe, and the other reversing valve is connected to an air pump.
[0007] A sleeve is welded to the end of the piston rod, and the sleeve is sleeved on the vertical transmission rod.
[0008] The beneficial effects of the utility model are as follows: the actuator uses hydraulic oil as a power medium, and controls the movement of the actuator by controlling the flow and direction of the hydraulic oil, and has the following characteristics: 1. Strong power: Since the pressure of the hydraulic oil is very high, the hydraulic scotch yoke actuator can generate a large thrust or torque, and can drive large valves or baffles and other equipment; 2. High precision: The hydraulic scotch yoke actuator can achieve high-precision position control and speed control by accurately controlling the flow and direction of the hydraulic oil, meeting the requirements of various industrial automation control systems; 3. High reliability: The hydraulic scotch yoke actuator adopts a sealing structure to prevent the leakage of hydraulic oil and the intrusion of external impurities, and therefore has high reliability and stability. 4. Easy maintenance: The hydraulic oil tank of the hydraulic scotch yoke actuator is generally located on the ground or in the foundation, which is convenient for maintenance and inspection; 5. Wide range of applications: The hydraulic scotch yoke actuator can be applied to various working environments and media, such as gas, liquid, steam, corrosive media, etc.; at the same time, in emergency situations, the cylinder and the hydraulic cylinder can be driven together to achieve a fast response output and a large torque to close the valve, thus achieving the technical effect of providing a large torque and a fast response output, thereby ensuring the reliability of the valve application.
[0009] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 A three-dimensional diagram of a specific implementation of the utility model;
[0011] Figure 2 It is a cross-sectional view of a specific implementation method of the utility model. DETAILED DESCRIPTION
[0012] The present invention is specifically described below through embodiments, which are only used to further illustrate the present invention and should not be construed as limiting the protection scope of the present invention.
[0013] like Figure 1 , Figure 2As shown, the present embodiment discloses a hydraulic scotch fork type actuator, comprising a mounting seat 1, a rotatable mounting sleeve 2 is provided on the mounting seat 1, the mounting sleeve 2 is mounted on the valve and is transmission-connected to the valve stem on the valve, a scotch fork 21 is welded on the peripheral wall of the mounting sleeve 2, a cylinder 3 is mounted on one side of the mounting seat 1, a hydraulic cylinder 4 is mounted on the other side of the mounting seat 1, a retractable hydraulic rod 41 is provided on the hydraulic cylinder 4, the hydraulic rod 41 is transmission-connected to the scotch fork 21, a retractable piston rod 31 is provided on the cylinder 3, the piston rod 31 is transmission-connected to the scotch fork 21, a guide groove 10 is provided in the mounting seat 1, a slider 5 is provided in the guide groove 10, the hydraulic rod 41 penetrates into the guide groove 10 and is connected to one side of the slider 5, a vertical transmission rod 6 is provided on the other side of the slider 5, the vertical transmission rod 6 is placed in the opening of the scotch fork 21, so that the hydraulic cylinder 4 can rotate by shifting the mounting sleeve 2 through the scotch fork 21.
[0014] The hydraulic cylinder 4 also includes an outer cylinder 42, in which a hydraulic piston 43 is arranged, and two oil inlets and outlets are arranged on the outer cylinder 42, and the two oil inlets and outlets are located on both sides of the hydraulic piston 43, and the two oil inlets and outlets are respectively connected to the reversing valve 8 through oil pipes, and the reversing valve 8 is connected to the oil tank through the manual pump 7. The manual pump 7 can pump the oil in the oil tank into the oil pipe to drive the hydraulic piston 43 in the outer cylinder to move forward or backward, and then drive the extension and retraction of the hydraulic rod, which can effectively and accurately control the stroke output of the hydraulic cylinder, and then achieve the precise control of the valve plate opening of the valve.
[0015] The cylinder 3 includes a cylinder body 33, a gas pressure piston 32 is arranged in the cylinder body 33, a piston rod 31 is connected to the gas pressure piston 32, the end of the piston rod 31 is rotatably connected to the vertical transmission rod 6, and two gas inlets and outlets are arranged on the cylinder body 33, and the two gas inlets and outlets are located on both sides of the gas pressure piston 32. The two gas inlets and outlets are respectively connected to another reversing valve through an air pipe, and the other reversing valve is connected to an air pump. In this way, the cylinder can be directly driven to extend and retract by the air pump, and the power output can be fast and efficient.
[0016] The end of the piston rod 31 is welded with a sleeve, which is sleeved on the vertical transmission rod 6. In this way, the end of the piston rod 31 is rotatably connected to the vertical transmission rod 6, so that the shift fork can be timely driven to drive the rotation of the mounting sleeve 2. At the same time, an angle pointer 9 is configured on the mounting sleeve 2, so that the outer diameter of the mounting seat 1 can be used to observe the opening of the valve plate rotation.
[0017] By adopting the above technical scheme, the actuator uses hydraulic oil as the power medium, and controls the movement of the actuator by controlling the flow and direction of the hydraulic oil. It also has the following characteristics: 1. Strong power: Since the pressure of the hydraulic oil is very high, the hydraulic fork 21 type actuator can generate a large thrust or torque, and can drive large valves or baffles and other equipment; 2. High precision: The hydraulic fork 21 type actuator can achieve high-precision position control and speed control by accurately controlling the flow and direction of the hydraulic oil, meeting the requirements of various industrial automation control systems; 3. High reliability: The hydraulic fork 21 type actuator adopts a sealing structure to prevent the leakage of hydraulic oil and the intrusion of external impurities, so it has high reliability and stability. 4. Easy maintenance: The hydraulic oil tank of the hydraulic scotch fork 21 type actuator is generally located on the ground or in the foundation, which is convenient for maintenance and inspection; 5. Wide range of applications: The hydraulic scotch fork 21 type actuator can be applied to various working environments and media, such as gas, liquid, steam, corrosive media, etc.; at the same time, in emergency situations, the cylinder 3 and the hydraulic cylinder 4 can be driven together to achieve a fast response output and a large torque to close the valve, so that the technical effect of providing a large torque and a fast response output can be achieved, thereby ensuring the reliability of the valve application.
[0018] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is limited by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.
[0019] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.
Claims
1. A hydraulic scotch fork actuator, comprising a mounting seat, characterized in that: A rotatable mounting sleeve is provided on the mounting seat, a shift fork is welded on the peripheral wall of the mounting sleeve, a cylinder is installed on one side of the mounting seat, a hydraulic cylinder is installed on the other side of the mounting seat, a retractable hydraulic rod is provided on the hydraulic cylinder, and the hydraulic rod is transmission-connected with the shift fork, a retractable piston rod is provided on the cylinder, and the piston rod is transmission-connected with the shift fork, a guide groove is provided in the mounting seat, a slider is provided in the guide groove, the hydraulic rod penetrates into the guide groove and is connected with one side of the slider, a vertical transmission rod is provided on the other side of the slider, and the vertical transmission rod is placed in the opening of the shift fork.
2. The hydraulic scotch yoke actuator according to claim 1, characterized in that: The hydraulic cylinder also includes an outer cylinder, a hydraulic piston is arranged in the outer cylinder, and two oil inlets and outlets are arranged on the outer cylinder. The two oil inlets and outlets are located on both sides of the hydraulic piston. The two oil inlets and outlets are connected to the reversing valve through oil pipes respectively, and the reversing valve is connected to the oil tank through a manual pump.
3. The hydraulic scotch yoke actuator according to claim 1, characterized in that: The cylinder comprises a cylinder body, in which a pneumatic piston is arranged, a piston rod is connected to the pneumatic piston, an end of the piston rod is rotatably connected to a vertical transmission rod, and the cylinder body is provided with two air inlets and outlets, the two air inlets and outlets are located on both sides of the pneumatic piston, and the two air inlets and outlets are respectively connected to another reversing valve through an air pipe, and the other reversing valve is connected to an air pump.
4. The hydraulic scotch yoke actuator according to claim 3, characterized in that: A sleeve is welded to the end of the piston rod, and the sleeve is sleeved on the vertical transmission rod.