Electro-hydraulic actuating mechanism for high-temperature environment

Abstract

The utility model discloses an electro-hydraulic actuating mechanism for a high-temperature environment, which belongs to the technical field of actuators, solves the problem that when an existing device works in the high-temperature environment, heat is continuously conducted into hydraulic oil through a hose, and high temperature of equipment is easily caused, and comprises a hydraulic oil cylinder, a motor part, a main body, a movable rod and a connecting pipe, the motor part is connected with the hydraulic oil cylinder and used for driving hydraulic oil in the hydraulic oil cylinder to flow, the connecting pipe and the hydraulic oil cylinder form a passage through the heat dissipation pipeline, the heat dissipation pipeline comprises a first hose and a second hose, the first hose is fixedly connected to the connecting pipe, and heat in the hydraulic oil is absorbed through a U-shaped pipe; and the speed of air circulation between the first connecting disc and the second connecting disc is increased through the cooling fan, heat exchange can be conducted between the U-shaped pipe and outside air, the purpose of cooling the hydraulic oil is achieved, and the situation of high temperature of equipment is avoided.

Description

Technical Field

[0001] This utility model relates to the field of actuator technology, specifically to an electro-hydraulic actuator for high-temperature environments. Background Technology

[0002] The main function of an actuator is to convert control signals into mechanical motion or other forms of output to achieve control of a system or equipment. Common types of actuators include electric actuators, pneumatic actuators, and hydraulic actuators, each with its specific application scenarios and advantages.

[0003] A search revealed that patent application number 202322855511.9 discloses an electro-hydraulic composite actuator, comprising a motor unit, a hydraulic cylinder, and an actuator unit. The motor unit is connected to the hydraulic cylinder to drive the flow of hydraulic oil inside the hydraulic cylinder. The actuator unit includes a main body, and a drive chamber is provided inside the main body. A piston is movably disposed inside the drive chamber. A movable rod is fixedly connected to one side of the piston. Connecting pipes are respectively provided on the sidewall of the drive chamber corresponding to both sides of the piston, and the connecting pipes are connected to the hydraulic cylinder through hoses to form a passage.

[0004] Although the electro-hydraulic hybrid actuator drives the hydraulic oil inside the hydraulic cylinder through the motor to push the piston in the drive chamber, and controls the brake plate to move radially to contact the inner wall of the drive chamber through the transmission mechanism, so that the piston is kept fixed in the drive chamber, there is no need to maintain high pressure in the oil passage, thereby reducing the high temperature of the equipment, when the electro-hydraulic hybrid actuator works in a high-temperature environment, heat is continuously conducted to the hydraulic oil through the hose, which can easily lead to high temperature of the equipment.

[0005] Therefore, we propose an electro-hydraulic actuator for high-temperature environments. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides an electro-hydraulic actuator for high-temperature environments, which solves the problem that when existing devices operate in high-temperature environments, heat is continuously conducted to the hydraulic oil through hoses, easily leading to high equipment temperatures.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: an electro-hydraulic actuator for high-temperature environments, comprising a hydraulic cylinder, a motor unit and a main body, a movable rod and a connecting pipe, wherein the motor unit is connected to the hydraulic cylinder for driving the flow of hydraulic oil inside the hydraulic cylinder, a piston is provided inside the main body, and connecting pipes are respectively provided on the side walls of the main body corresponding to both sides of the piston, and a movable rod that is slidably fitted on the top surface of the piston is fixedly installed, and the connecting pipe forms a passage with the hydraulic cylinder through a heat dissipation pipe;

[0008] The heat dissipation pipe includes a first flexible hose and a second flexible hose. The first flexible hose is fixedly connected to the connecting pipe. The end of the first flexible hose away from the connecting pipe is fixedly installed on the top surface of the first connecting plate. The second flexible hose is fixedly installed on the side wall of the hydraulic cylinder and communicates with its inner cavity. The end of the second flexible hose away from the hydraulic cylinder is fixedly installed in the middle of the bottom surface of the second connecting plate. Both the second and first connecting plates are hollow inside. A U-shaped tube arranged in a ring array is provided between the second and first connecting plates. The two ends of the U-shaped tube are respectively fixedly installed on the arc surfaces of the first and second connecting plates. A cooling fan is provided on the bottom surface of the first connecting plate.

[0009] Preferably, the first hose is connected to the inner cavity of the first connecting plate, the second hose is connected to the inner cavity of the second connecting plate, and the first connecting plate and the second connecting plate are connected by a U-shaped tube, so as to facilitate the flow of hydraulic oil in the second hose, the second connecting plate, the U-shaped tube, the first connecting plate, and the first hose.

[0010] Preferably, the diameter of the first connecting plate is three times the diameter of the second connecting plate, and the U-shaped tube is made of copper, in order to increase the airflow rate around the second connecting plate, increase the contact area between the bottom of the U-shaped tube and the external air, and thus improve the heat dissipation effect on the hydraulic oil.

[0011] Preferably, connecting posts are fixedly installed at the four corners of the top surface of the cooling fan, and the connecting posts are fixedly installed on the bottom surface of the first connecting plate. The cooling fan is installed on the bottom surface of the first connecting plate through the connecting posts so that external air can circulate in the space between the cooling fan and the first connecting plate.

[0012] Preferably, the outer surface of the main body is provided with a heat dissipation assembly, which includes a first annular plate, a second annular plate, and heat dissipation fins. The first annular plate and the second annular plate are respectively fixedly fitted at both ends of the outer surface of the main body, and the two ends of the heat dissipation fins are respectively fixedly installed on the side walls of the first annular plate and the second annular plate. The position of the heat dissipation fins is defined by the first annular plate and the second annular plate.

[0013] Preferably, the heat dissipation fins are arc-shaped on the side closest to the main body, and the thickness of the heat dissipation fins gradually decreases from the side closest to the main body to the side furthest from the main body. The heat dissipation fins can absorb heat from inside the main body and then dissipate it to the external environment.

[0014] This invention provides an electro-hydraulic actuator for high-temperature environments. It offers the following advantages:

[0015] 1. This electro-hydraulic actuator for high-temperature environments absorbs heat from the hydraulic oil through a U-shaped tube and increases the airflow rate between the first and second connecting plates through a cooling fan. This allows the U-shaped tube to exchange heat with the outside air, achieving the purpose of cooling the hydraulic oil. This helps to prevent the equipment from overheating and solves the problem that existing devices, when operating in high-temperature environments, constantly conduct heat to the hydraulic oil through hoses, which can easily lead to overheating of the equipment.

[0016] 2. This electro-hydraulic actuator for high-temperature environments can absorb heat from the body through heat dissipation fins and then dissipate the heat from the body into the air, which is beneficial for cooling the body. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the heat dissipation component structure of this utility model;

[0019] Figure 3 This is a schematic diagram of the heat dissipation pipe structure of this utility model.

[0020] In the diagram: 1. Hydraulic cylinder; 2. Motor unit; 3. Main body; 31. Movable rod; 32. Connecting pipe; 4. Heat dissipation pipe; 41. First flexible hose; 42. Second flexible hose; 43. First connecting plate; 44. Second connecting plate; 45. U-shaped tube; 46. Cooling fan; 47. Connecting column; 5. Heat dissipation assembly; 51. First annular plate; 52. Second annular plate; 53. Heat dissipation fins. Detailed Implementation

[0021] 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.

[0022] Example 1: As Figure 1-3The system includes a hydraulic cylinder 1, a motor unit 2, a main body 3, a movable rod 31, and a connecting pipe 32. The motor unit 2 is connected to the hydraulic cylinder 1 to drive the flow of hydraulic oil inside the cylinder 1. A piston is installed inside the main body 3. Connecting pipes 32 are respectively installed on the side walls of the main body 3 corresponding to the two sides of the piston. A movable rod 31, which is slidably fitted onto the top of the main body 3, is fixedly installed on the top surface of the piston. The connecting pipe 32 forms a passage with the hydraulic cylinder 1 through a heat dissipation pipe 4. The heat dissipation pipe 4 includes a first flexible hose 41 and a second flexible hose 42. The first flexible hose 41 is fixedly connected to the connecting pipe 32. The end of the first flexible hose 41 away from the connecting pipe 32 is fixedly installed on the top surface of a first connecting plate 43. The second flexible hose 42 is fixedly installed on the side wall of the hydraulic cylinder 1 and communicates with its inner cavity. The end of the second flexible hose 42 away from the hydraulic cylinder 1 is fixedly installed in the middle of the bottom surface of a second connecting plate 44. Both the second connecting plate 44 and the first connecting plate 43 are hollow inside. A space is provided between the second connecting plate 44 and the first connecting plate 43. There are U-shaped tubes 45 arranged in a ring array. The two ends of the U-shaped tubes 45 are fixedly installed on the arc surfaces of the first connecting plate 43 and the second connecting plate 44, respectively. A cooling fan 46 is provided on the bottom surface of the first connecting plate 43. The first flexible hose 41 is connected to the inner cavity of the first connecting plate 43, and the second flexible hose 42 is connected to the inner cavity of the second connecting plate 44. The first connecting plate 43 and the second connecting plate 44 are connected by the U-shaped tubes 45. The diameter of the first connecting plate 43 is three times the diameter of the second connecting plate 44. The U-shaped tubes 45 are made of copper. Connecting posts 47 are fixedly installed at the four corners of the top surface of the cooling fan 46. The connecting posts 47 are fixedly installed on the bottom surface of the first connecting plate 43. The U-shaped tubes 45 absorb the heat in the hydraulic oil, and the cooling fan 46 increases the airflow rate between the first connecting plate 43 and the second connecting plate 44. The U-shaped tubes 45 can exchange heat with the outside air, thereby achieving the purpose of cooling the hydraulic oil and helping to avoid the occurrence of high temperature in the equipment.

[0023] Example 2: Figure 1-2 As shown: A heat dissipation assembly 5 is provided on the outer surface of the main body 3. The heat dissipation assembly 5 includes a first annular plate 51, a second annular plate 52 and heat dissipation fins 53. The first annular plate 51 and the second annular plate 52 are respectively fixedly fitted at both ends of the outer surface of the main body 3. The two ends of the heat dissipation fins 53 are respectively fixedly installed on the side walls of the first annular plate 51 and the second annular plate 52. The side of the heat dissipation fins 53 close to the main body 3 is arc-shaped. The thickness of the heat dissipation fins 53 gradually decreases from the side close to the main body 3 to the side away from the main body 3. The heat dissipation fins 53 can absorb the heat inside the main body 3 and then dissipate the heat inside the main body 3 into the air, which is beneficial for cooling the main body 3.

[0024] The working principle and usage process of this utility model: This electro-hydraulic actuator for high-temperature environments, in use, controls the hydraulic cylinder 1 through the motor unit 2, and injects oil into the interior of the main body 3 through the heat dissipation pipe 4. When the hydraulic flow occurs, the hydraulic oil inside the hydraulic cylinder 1 enters the interior of the second connecting plate 44 through the second hose 42, and then the hydraulic oil in the second connecting plate 44 enters the interior of the U-shaped tube 45, then the hydraulic oil enters the interior of the first connecting plate 43, and finally the hydraulic oil enters the interior of the main body 3 through the first hose 41 to drive the piston inside, which in turn moves the movable rod 31. During this process, the heat in the hydraulic oil is conducted to the U-shaped tube 45, and the cooling fan 46 is activated to increase the airflow rate between the first connecting plate 43 and the second connecting plate 44, which can exchange heat between the U-shaped tube 45 and the outside air, thereby cooling the hydraulic oil inside. The heat dissipation fins 53 can absorb the heat inside the main body 3 and then dissipate the heat inside the main body 3 into the air.

[0025] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. It will be apparent to those skilled in the art that this utility model is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An electro-hydraulic actuator for high-temperature environments, comprising a hydraulic cylinder (1), a motor (2), a main body (3), a movable rod (31), and a connecting pipe (32), wherein the motor (2) is connected to the hydraulic cylinder (1) for driving the flow of hydraulic oil inside the hydraulic cylinder (1), a piston is provided inside the main body (3), and connecting pipes (32) are respectively provided on the side wall of the main body (3) corresponding to both sides of the piston, and a movable rod (31) is fixedly mounted on the top surface of the piston and slidably fitted on the top of the main body (3), and the connecting pipe (32) forms a passage with the hydraulic cylinder (1) through a heat dissipation pipe (4); Its features are: The heat dissipation pipe (4) includes a first hose (41) and a second hose (42). The first hose (41) is fixedly connected to the connecting pipe (32). The end of the first hose (41) away from the connecting pipe (32) is fixedly installed on the top surface of the first connecting plate (43). The second hose (42) is fixedly installed on the side wall of the hydraulic cylinder (1) and communicates with its inner cavity. The end of the second hose (42) away from the hydraulic cylinder (1) is fixedly installed in the middle of the bottom surface of the second connecting plate (44). The second connecting plate (44) and the first connecting plate (43) are both hollow inside. A U-shaped tube (45) arranged in a ring array is provided between the second connecting plate (44) and the first connecting plate (43). The two ends of the U-shaped tube (45) are respectively fixedly installed on the arc surface of the first connecting plate (43) and the second connecting plate (44). A heat dissipation fan (46) is provided on the bottom surface of the first connecting plate (43).

2. The electro-hydraulic actuator for high-temperature environments according to claim 1, characterized in that: The first hose (41) is connected to the inner cavity of the first connecting plate (43), the second hose (42) is connected to the inner cavity of the second connecting plate (44), and the first connecting plate (43) and the second connecting plate (44) are connected by a U-shaped tube (45).

3. The electro-hydraulic actuator for high-temperature environments according to claim 1, characterized in that: The diameter of the first connecting plate (43) is three times the diameter of the second connecting plate (44), and the U-shaped tube (45) is made of copper.

4. The electro-hydraulic actuator for high-temperature environments according to claim 1, characterized in that: Connecting posts (47) are fixedly installed at the four corners of the top surface of the cooling fan (46), and the connecting posts (47) are fixedly installed on the bottom surface of the first connecting plate (43).

5. The electro-hydraulic actuator for high-temperature environments according to claim 1, characterized in that: The outer surface of the main body (3) is provided with a heat dissipation assembly (5), which includes a first annular plate (51), a second annular plate (52) and heat dissipation fins (53). The first annular plate (51) and the second annular plate (52) are respectively fixedly fitted at both ends of the outer surface of the main body (3), and the two ends of the heat dissipation fins (53) are respectively fixedly installed on the side walls of the first annular plate (51) and the second annular plate (52).

6. The electro-hydraulic actuator for high-temperature environments according to claim 5, characterized in that: The heat dissipation fins (53) are arc-shaped on the side near the main body (3), and the thickness of the heat dissipation fins (53) gradually decreases from the side near the main body (3) to the side away from the main body (3).

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