Cylinder barrel assembly for electro-hydraulic integrated push rod

Abstract

The cylinder barrel assembly for the electro-hydraulic integrated push rod comprises a cylinder barrel main body, a cylinder barrel inner cavity which is completely through is formed in the center of the cylinder barrel main body, and the cylinder barrel inner cavity is assembled with a piston rod in a sliding mode. A cylinder barrel head plugging piece is arranged at the front end of the cylinder barrel inner cavity, a cylinder barrel tail plugging piece is arranged at the rear end of the cylinder barrel inner cavity, and the piston rod penetrates through the cylinder barrel head plugging piece. A long oil pipe and a short oil pipe which are arranged in the axial direction of the cylinder barrel body are arranged in the outer side wall of the cylinder barrel body, an oil outlet of the long oil pipe is communicated with a cylinder barrel inner cavity located on the front side of the right end of the piston rod, and an oil outlet of the short oil pipe is communicated with a cylinder barrel inner cavity located on the rear side of the right end of the piston rod. The long oil pipe and the short oil pipe are axially arranged in the side wall of the cylinder barrel body respectively, the problem that an oil way is exposed outside for a long time is solved, and accelerated aging of the oil pipes exposed in the external environment for a long time is avoided.

Description

Technical Field

[0001] This utility model relates to the field of electro-hydraulic actuator technology, specifically to a cylinder assembly for an electro-hydraulic integrated actuator. Background Technology

[0002] Electro-hydraulic actuators are hydraulically driven manipulators that integrate mechanics, electricity, and hydraulics. They are suitable for reciprocating push-pull and linear / rotational movements at a certain angle. They are universal drives, similar to servo motors and cylinders, and are widely used in metallurgy, mining, power, coal, machinery, transportation, grain, chemical, cement, water conservancy, building materials, and transportation industries.

[0003] The cylinder barrel of existing electro-hydraulic actuator hydraulic cylinders is usually connected to the oil pipe externally. The oil circuit is exposed to the outside for a long time, which leads to accelerated aging of the oil circuit surface. Moreover, since the cylinder barrel of a hydraulic cylinder usually has multiple oil circuits, the external oil circuits may become entangled, making it difficult to find the oil pipes during maintenance. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a cylinder assembly for an electro-hydraulic integrated push rod, which can avoid the oil circuit being exposed to the external environment for a long time and solve the problem that the oil circuit is prone to aging when exposed to the outside.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows.

[0006] A cylinder assembly for an electro-hydraulic integrated actuator includes a cylinder body with a fully penetrating cylinder cavity at its center, the cylinder cavity being slidably fitted with a piston rod; a cylinder head sealing member is provided at the front end of the cylinder cavity, and a cylinder tail sealing member is provided at the rear end of the cylinder cavity, the piston rod passing through the cylinder head sealing member; a long oil pipe and a short oil pipe are respectively provided inside the outer side wall of the cylinder body, arranged axially along the cylinder body, the oil outlet of the long oil pipe communicating with the cylinder cavity located on the front side of the right end of the piston rod, and the oil outlet of the short oil pipe communicating with the cylinder cavity located on the rear side of the right end of the piston rod.

[0007] The above-mentioned electro-hydraulic integrated push rod cylinder assembly has two legs at the bottom of the cylinder body for supporting the cylinder body.

[0008] The aforementioned electro-hydraulic integrated push rod cylinder assembly has cylinder exhaust seats that communicate with the cylinder cavity installed on the cylinder body sidewall located on the front side of the right end of the piston rod and the cylinder body sidewall located on the rear side of the right end of the piston rod, respectively.

[0009] The aforementioned electro-hydraulic integrated actuator cylinder assembly has an anti-rotation rod mounting seat provided on the outer wall of the cylinder body, and the anti-rotation rod mounting seat is slidably fitted with the anti-rotation rod on the piston rod.

[0010] Due to the adoption of the above technical solutions, the technological progress achieved by this utility model is as follows.

[0011] This utility model provides a cylinder assembly for an electro-hydraulic integrated push rod, in which long and short oil pipes are axially arranged inside the side wall of the cylinder body, solving the problem of oil circuits being exposed to the outside for a long time and avoiding the oil pipes from aging faster due to long-term exposure to the external environment. At the same time, the long and short oil pipes are connected to the cylinder cavities located on the front and rear sides of the right end of the piston rod, respectively, which can adjust the oil flow direction and, together with the cylinder venting seat, vent the corresponding cylinder cavity, preventing excessive pressure inside the cylinder cavity from causing damage. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the specific structure of the internal pipeline distribution of this utility model;

[0013] Figure 2 This is a cross-sectional view of the present invention from another angle;

[0014] Among them: 1100. Cylinder body, 1101. Support leg, 1102. Cylinder cavity, 1103. Anti-rotation rod mounting seat, 1104. Long oil pipe, 1105. Short oil pipe, 1106. Cylinder exhaust seat. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0016] A cylinder assembly for an electro-hydraulic integrated actuator, such as Figures 1 to 2 As shown, the cylinder body 1100 includes a cylinder barrel body 1100, with a fully penetrating cylinder barrel cavity 1102 at its center. The cylinder barrel cavity 1102 is slidably fitted with a piston rod. A cylinder barrel head sealing member is provided at the front end of the cylinder barrel cavity 1102, at which point the front end of the cylinder barrel cavity is the protruding end of the piston rod, which passes through the cylinder barrel head sealing member. A cylinder barrel tail sealing member is provided at the rear end of the cylinder barrel cavity 1102 to ensure the sealing of the cylinder barrel cavity.

[0017] The outer wall of the cylinder body 1100 is provided with a long oil pipe 1104 and a short oil pipe 1105 arranged along the axial direction of the cylinder body, and the long oil pipe 1104 and the short oil pipe 1105 are arranged opposite to each other.

[0018] The oil outlet of the long oil pipe 1104 is connected to the cylinder cavity 1102 located on the front side of the right end of the piston rod, and is used to deliver oil to the cylinder cavity 1102 on the front side of the right end of the piston rod, so as to move the piston rod to the right and thus push the piston rod to retract backward.

[0019] The oil outlet of the short oil pipe 1105 is connected to the cylinder cavity 1102 located on the rear side of the right end of the piston rod, and is used to supply oil to the cylinder cavity 1102 on the rear side of the right end of the piston rod, so as to move the piston rod to the left and push the piston rod forward.

[0020] The bottom of the cylinder body 1100 is provided with support feet 1101, which are used to support the cylinder body 1100. There are two support feet 1101.

[0021] An anti-rotation rod mounting seat 1103 is provided on the outer wall of the cylinder body 1100. The anti-rotation rod mounting seat 1103 is slidably fitted with the anti-rotation rod on the piston rod, so as to move together with the piston rod and guide the movement of the piston rod, while preventing the piston rod from deviating and rotating.

[0022] Cylinder exhaust seats 1106, which communicate with the cylinder cavity 1102, are respectively installed on the side wall of the cylinder body 1100 located on the front side of the right end of the piston rod and on the side wall of the cylinder body 1100 located on the rear side of the right end of the piston rod.

[0023] This utility model provides a cylinder assembly for an electro-hydraulic integrated push rod, in which long and short oil pipes are axially arranged inside the side wall of the cylinder body, solving the problem of oil circuits being exposed to the outside for a long time and avoiding the oil pipes from aging faster due to long-term exposure to the external environment. At the same time, the long and short oil pipes are connected to the cylinder cavities located on the front and rear sides of the right end of the piston rod, respectively, which can adjust the oil flow direction and, together with the cylinder venting seat, vent the corresponding cylinder cavity, preventing excessive pressure inside the cylinder cavity from causing damage.

Claims

1. A cylinder assembly for an electro-hydraulic integrated actuator, characterized in that: The cylinder body (1100) includes a cylinder body (1100) with a fully penetrating cylinder cavity (1102) at its center. The cylinder cavity (1102) is slidably fitted with a piston rod. A cylinder head sealing member is provided at the front end of the cylinder cavity (1102), and a cylinder tail sealing member is provided at the rear end of the cylinder cavity (1102). The piston rod passes through the cylinder head sealing member. A long oil pipe (1104) and a short oil pipe (1105) are respectively provided on the inner side of the outer wall of the cylinder body (1100) along the axial direction of the cylinder body. The oil outlet of the long oil pipe (1104) is connected to the cylinder cavity (1102) located on the front side of the right end of the piston rod, and the oil outlet of the short oil pipe (1105) is connected to the cylinder cavity (1102) located on the rear side of the right end of the piston rod.

2. The cylinder assembly for an electro-hydraulic integrated actuator according to claim 1, characterized in that: The bottom of the cylinder body (1100) is provided with two support legs (1101) for supporting the cylinder body (1100).

3. The cylinder assembly for an electro-hydraulic integrated actuator according to claim 1, characterized in that: Cylinder exhaust seats (1106) that communicate with the cylinder cavity (1102) are respectively installed on the side wall of the cylinder body (1100) located on the front side of the right end of the piston rod and on the side wall of the cylinder body (1100) located on the rear side of the right end of the piston rod.

4. The cylinder assembly for an electro-hydraulic integrated actuator according to claim 1, characterized in that: The outer wall of the cylinder body (1100) is provided with an anti-rotation rod mounting seat (1103), and the anti-rotation rod mounting seat (1103) is slidably fitted with the anti-rotation rod on the piston rod.

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