CN-224229016-U - Electrohydraulic actuator for high temperature environment

Abstract

The utility model discloses an electrohydraulic actuator for high temperature environment, belonging to the technical field of actuators, solving the problem that when the existing device works in high temperature environment, heat is continuously conducted into hydraulic oil through a hose, which is easy to cause high temperature of equipment, comprising a hydraulic cylinder, a motor part, a main body, a movable rod and a connecting pipe, wherein the motor part is connected with the hydraulic cylinder and is used for driving the hydraulic oil in the hydraulic cylinder to flow, the connecting pipe forms the passageway through radiating pipe and hydraulic cylinder, radiating pipe includes first hose and second hose, first hose fixed connection is on the connecting pipe, absorbs the heat in the hydraulic oil through the U-shaped pipe, increases the speed of circulation of air between first connection pad and the second connection pad through radiator fan, can carry out heat exchange with U-shaped pipe and outside air, has reached the purpose of carrying out cooling treatment to the hydraulic oil, is favorable to avoiding the condition emergence of equipment high temperature.

Inventors

• YAN BIN
• DONG YOUMEI
• XU FALIANG

Assignees

• 浙江天泰控制设备有限公司

Dates

Publication Date

20260512

Application Date

20250613

Claims (6)

1. 1. The electrohydraulic actuating mechanism for the high-temperature environment comprises a hydraulic cylinder (1), a motor part (2) and a main body (3), a movable rod (31) and a connecting pipe (32), wherein the motor part (2) is connected with the hydraulic cylinder (1) and is used for driving hydraulic oil in the hydraulic cylinder (1) to flow, a piston is arranged in the main body (3), connecting pipes (32) are respectively arranged at two sides of the side wall of the main body (3) corresponding to the piston, the top surface of the piston is fixedly provided with the movable rod (31) sleeved at the top end of the main body (3) in a sliding manner, and the connecting pipe (32) and the hydraulic cylinder (1) form a passage through a heat dissipation pipeline (4); The heat dissipation pipeline (4) is characterized by comprising a first hose (41) and a second hose (42), wherein the first hose (41) is fixedly connected to the connecting pipe (32), one end of the first hose (41) away from the connecting pipe (32) is fixedly arranged on the top surface of the first connecting disc (43), the second hose (42) is fixedly arranged on the side wall of the hydraulic cylinder (1) and communicated with the inner cavity of the hydraulic cylinder, one end of the second hose (42) away from the hydraulic cylinder (1) is fixedly arranged in the middle of the bottom surface of the second connecting disc (44), the second connecting disc (44) and the first connecting disc (43) are hollow, a U-shaped pipe (45) distributed in an annular array is arranged between the second connecting disc (44) and the first connecting disc (43), two ends of the U-shaped pipe (45) are respectively fixedly arranged on the cambered surfaces of the first connecting disc (43) and the second connecting disc (44), and the bottom surface of the first connecting disc (43) is provided with a heat dissipation fan (46).
2. 2. An electro-hydraulic actuator for a high temperature environment according to claim 1, wherein said first hose (41) is in communication with the interior of a first land (43), said second hose (42) is in communication with the interior of a second land (44), and said first land (43) and second land (44) are in communication via a U-tube (45).
3. 3. The electro-hydraulic actuator for a high temperature environment according to claim 1, wherein the diameter of the first connecting disc (43) is three times that of the second connecting disc (44), and the U-shaped tube (45) is made of copper.
4. 4. The electro-hydraulic actuator for a high temperature environment according to claim 1, wherein the four corners of the top surface of the cooling fan (46) are fixedly provided with connecting columns (47), and the connecting columns (47) are fixedly arranged on the bottom surface of the first connecting disc (43).
5. 5. The electrohydraulic actuator for a high temperature environment of claim 1 wherein a heat dissipating component (5) is provided on an outer surface of said main body (3), said heat dissipating component (5) comprises a first annular plate (51), a second annular plate (52) and heat dissipating fins (53), said first annular plate (51) and said second annular plate (52) are respectively fixedly sleeved at two ends of the outer surface of said main body (3), and said two ends of said heat dissipating fins (53) are respectively fixedly mounted on side walls of said first annular plate (51) and said second annular plate (52).
6. 6. An electro-hydraulic actuator for a high temperature environment according to claim 5, wherein the radiating fin (53) is rounded on a side closer to the main body (3), and the radiating fin (53) is tapered from a side closer to the main body (3) to a side farther from the main body (3).

Description

Electrohydraulic actuator for high temperature environment Technical Field The utility model relates to the technical field of actuators, in particular to an electrohydraulic actuator for a high-temperature environment. Background The main function of the actuator is to convert a control signal into mechanical motion or other forms of output so as to control a system or equipment, and common types of actuators include an electric actuator, a pneumatic actuator, a hydraulic actuator and the like, and each type has specific application scenes and advantages. Through retrieval, in the application with the patent application number 202322855511.9, an electrohydraulic composite actuating mechanism is disclosed, which comprises a motor part, a hydraulic cylinder and an actuating part, wherein the motor part is connected with the hydraulic cylinder and used for driving hydraulic oil in the hydraulic cylinder to flow, the actuating part comprises a main body, a driving cavity is arranged in the main body, a piston is movably arranged in the driving cavity, one side of the piston is fixedly connected with a movable rod, connecting pipes are respectively arranged at two sides of the side wall of the driving cavity corresponding to the piston, and the connecting pipes are connected with the hydraulic cylinder through hoses to form a passage; The electrohydraulic composite actuating mechanism drives hydraulic oil in the hydraulic oil cylinder to flow through the motor part and is used for pushing a piston in the driving cavity to move, and the brake plate is controlled by the transmission mechanism to move along the radial direction so as to be in contact with the inner wall of the driving cavity, so that the piston is kept fixed in the driving cavity, high pressure is not required to be kept in an oil duct, and then the high temperature of equipment is reduced. We therefore propose an electro-hydraulic actuator for use in a high temperature environment. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides an electrohydraulic actuator for a high-temperature environment, which solves the problem that when the existing device works in the high-temperature environment, heat is continuously conducted into hydraulic oil through a hose, and the high temperature of equipment is easily caused. The electrohydraulic actuator for the high-temperature environment comprises a hydraulic cylinder, a motor part, a main body, a movable rod and connecting pipes, wherein the motor part is connected with the hydraulic cylinder and used for driving hydraulic oil in the hydraulic cylinder to flow, a piston is arranged in the main body, connecting pipes are respectively arranged at two sides of the side wall of the main body corresponding to the piston, the movable rod sleeved at the top end of the main body in a sliding manner is fixedly arranged on the top surface of the piston, and the connecting pipes and the hydraulic cylinder form a passage through a heat dissipation pipeline; The heat dissipation pipeline comprises a first hose and a second hose, wherein the first hose is fixedly connected to a connecting pipe, one end of the first hose, which is far away from the connecting pipe, is fixedly arranged on the top surface of a first connecting disc, the second hose is fixedly arranged on the side wall of a hydraulic oil cylinder and is communicated with an inner cavity of the first hose, one end of the second hose, which is far away from the hydraulic oil cylinder, is fixedly arranged in the middle of the bottom surface of a second connecting disc, the second connecting disc and the first connecting disc are hollow, a U-shaped pipe which is distributed in an annular array is arranged between the second connecting disc and the first connecting disc, two ends of the U-shaped pipe are respectively fixedly arranged on the cambered surfaces of the first connecting disc and the second connecting disc, and the bottom surface of the first connecting disc is provided with a heat dissipation fan. Preferably, the first hose is communicated with the inner cavity of the first connecting disc, the second hose is communicated with the inner cavity of the second connecting disc, and the first connecting disc and the second connecting disc are communicated through a U-shaped pipe, wherein hydraulic oil circulates in the second hose, the second connecting disc, the U-shaped pipe, the first connecting disc and the first hose conveniently. Preferably, the diameter of the first connecting disc is three times that of the second connecting disc, and the U-shaped tube is made of copper, so that the circulation rate of air around the second connecting disc is increased, the contact area between the bottom of the U-shaped tube and the outside air is increased, and the heat dissipation effect of hydraulic oil is improved. Preferably, the four corners of the top surface of the cooling fan are fixedly provided with connectin