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CN-224228992-U - Hydraulic cylinder for electrohydraulic integrated push rod

CN224228992UCN 224228992 UCN224228992 UCN 224228992UCN-224228992-U

Abstract

The utility model discloses a hydraulic cylinder for an electrohydraulic integrated push rod, which comprises a cylinder barrel assembly and a PLC (programmable logic controller), wherein a piston rod is arranged in the cylinder barrel assembly in a sliding manner, the cylinder barrel assembly comprises a cylinder barrel main body, a cylinder barrel inner cavity is arranged in the center of the cylinder barrel main body, the cylinder barrel inner cavity is assembled with the piston rod in a sliding manner, a long oil pipe and a short oil pipe which are axially arranged along the cylinder barrel main body are respectively arranged in the outer side wall of the cylinder barrel main body, a protective cover is arranged on the periphery of the piston rod extending out of the cylinder barrel main body, and the protective cover is of a corrugated type retractable structure.

Inventors

  • LI KUAN
  • CHEN LIYA
  • HU CHAOHUI

Assignees

  • 石家庄市液压有限责任公司

Dates

Publication Date
20260512
Application Date
20250623

Claims (7)

  1. 1. A hydraulic cylinder for an electrohydraulic integrated push rod is characterized by comprising a cylinder barrel assembly (110) and a PLC, wherein a piston rod (120) is arranged in the cylinder barrel assembly (110) in a sliding mode, the cylinder barrel assembly (110) comprises a cylinder barrel main body (1100), a cylinder barrel inner cavity (1102) is arranged in the center of the cylinder barrel main body (1100), the cylinder barrel inner cavity (1102) is slidably assembled with the piston rod (120), a long oil pipe (1104) and a short oil pipe (1105) which are axially arranged along the cylinder barrel main body are respectively arranged in the outer side wall of the cylinder barrel main body (1100), an oil outlet of the long oil pipe (1104) is communicated with the cylinder barrel inner cavity (1102) which is positioned at the front side of a piston block at the right end of the piston rod (120), an oil outlet of the short oil pipe (1105) is communicated with the cylinder barrel inner cavity (1102) which is positioned at the rear side of the piston block at the right end of the piston rod (120), a protective cover (150) is arranged at the periphery side of the piston rod (120) which extends out of the cylinder barrel main body (1100), one end of the protective cover (150) is fixedly arranged on the side wall of the piston rod (120), and the other end of the protective cover is sleeved at the front of the cylinder barrel main body (1100), and the protective cover (150) is of a corrugated retractable structure.
  2. 2. The hydraulic cylinder for the electro-hydraulic integrated push rod of claim 1, wherein a magnetic ring (180) is arranged at the end part of a piston rod (120) positioned at the inner rear end of the cylinder barrel assembly, a displacement sensor (190) is arranged in the cylinder barrel assembly (110), and the output end of the displacement sensor (190) is connected with the input end of the PLC.
  3. 3. The hydraulic cylinder for the electro-hydraulic integrated push rod of claim 2, wherein the displacement sensor (190) is one of a Hall effect sensor, a magnetostrictive sensor, a magnetic grating ruler and an inductive proximity sensor.
  4. 4. The hydraulic cylinder for the electro-hydraulic integrated push rod of claim 1, wherein a cylinder head blocking piece (160) is arranged at the front end of the cylinder inner cavity (1102), a cylinder tail blocking piece (170) is arranged at the rear end of the cylinder inner cavity (1102), and a piston rod (120) penetrates through the cylinder head blocking piece (160).
  5. 5. The hydraulic cylinder for the electro-hydraulic integrated push rod, as set forth in claim 1, characterized in that an anti-rotation rod mounting seat (1103) is provided on the outer side wall of the cylinder barrel main body (1100), a connection plate (130) is provided at the front end of the piston rod (120), an anti-rotation rod (140) is provided on the end surface of the connection plate (130) close to the piston rod (120), and the other end of the anti-rotation rod (140) is slidably assembled with the anti-rotation rod mounting seat (1103).
  6. 6. The hydraulic cylinder for the electro-hydraulic integrated push rod of claim 1, wherein a cylinder exhaust seat (1106) communicated with a cylinder inner cavity (1102) is respectively arranged on the side wall of the cylinder body (1100) positioned at the front side of the right end of the piston rod (120) and the side wall of the cylinder body (1100) positioned at the rear side of the right end of the piston rod (120).
  7. 7. The hydraulic cylinder for the electro-hydraulic integrated push rod of claim 1, wherein the bottom of the cylinder body (1100) is provided with two supporting feet (1101) for supporting the cylinder body (1100), and the number of the supporting feet (1101) is two.

Description

Hydraulic cylinder for electrohydraulic integrated push rod Technical Field The utility model relates to the technical field of electro-hydraulic push rods, in particular to a hydraulic cylinder for an electro-hydraulic integrated push rod. Background The electrohydraulic push rod is a hydraulic driving manipulator integrating machine, electricity and liquid, is suitable for reciprocating push-pull straight reciprocating rotation at a certain angle, is driven by a servo motor, a cylinder and the like in general, and is widely applied to the departments of metallurgy, mine, electric power, coal, machinery, traffic, grain, chemical industry, cement, water conservancy, building materials, transportation and the like. The working environment of the existing electrohydraulic push rod hydraulic cylinder is mostly a site with large external dust, a piston rod in the hydraulic cylinder is not provided with a protection component, and the piston rod can be directly exposed in the external environment when acting, so that dust in air is extremely easy to enter into hydraulic oil in a cylinder barrel, and the hydraulic cylinder cannot work normally when the oil is polluted. Disclosure of utility model The utility model aims to solve the technical problem of providing the hydraulic cylinder for the electrohydraulic integrated push rod, which can protect a piston rod, solve the problem that dust impurities easily enter the cylinder barrel to cause pollution due to the fact that the piston rod is exposed to the external environment, and avoid bringing the dust impurities into the cylinder barrel to pollute hydraulic oil in the moving process of the piston rod. In order to solve the technical problems, the technical scheme adopted by the utility model is as follows. The hydraulic cylinder for the electrohydraulic integrated push rod comprises a cylinder barrel assembly and a PLC, wherein a piston rod is arranged in the cylinder barrel assembly in a sliding mode, the cylinder barrel assembly comprises a cylinder barrel main body, a cylinder barrel inner cavity is arranged in the center of the cylinder barrel main body, the cylinder barrel inner cavity is assembled with the piston rod in a sliding mode, a long oil pipe and a short oil pipe which are axially arranged along the cylinder barrel main body are respectively arranged in the outer side wall of the cylinder barrel main body, an oil outlet of the long oil pipe is communicated with the cylinder barrel inner cavity positioned at the front side of a piston block at the right end of the piston rod, an oil outlet of the short oil pipe is communicated with the cylinder barrel inner cavity positioned at the rear side of the piston block at the right end of the piston rod, a protective cover is arranged on the periphery of the piston rod extending out of the cylinder barrel main body, one end of the protective cover is fixedly arranged on the side wall of the piston rod, the other end of the protective cover is sleeved at the front of the cylinder barrel main body, and the protective cover is of a corrugated type contractible structure. According to the hydraulic cylinder for the electro-hydraulic integrated push rod, the magnetic ring is arranged at the end part of the piston rod positioned at the rear end inside the cylinder barrel assembly, the displacement sensor is arranged in the cylinder barrel assembly, and the output end of the displacement sensor is connected with the input end of the PLC. The displacement sensor is one of a Hall effect sensor, a magnetostriction sensor, a magnetic grating ruler and an inductive proximity sensor. Above-mentioned hydraulic cylinder for integrated push rod of electric liquid, the front end of cylinder inner chamber is provided with cylinder head shutoff piece, and the rear end of cylinder inner chamber is provided with cylinder afterbody shutoff piece, and the piston rod runs through cylinder head shutoff piece setting. Above-mentioned hydraulic cylinder for integrated push rod of electric liquid, cylinder main part lateral wall is provided with prevents the bull stick mount pad, and the piston rod front end is provided with the connecting plate, is provided with on the connecting plate terminal surface that is close to the piston rod and prevents the bull stick, prevents the other end of bull stick and prevents bull stick mount pad slip and join in marriage the dress. According to the hydraulic cylinder for the electro-hydraulic integrated push rod, the cylinder barrel exhaust seat communicated with the cylinder barrel inner cavity is respectively arranged on the side wall of the cylinder barrel main body positioned at the front side of the right end of the piston rod and the side wall of the cylinder barrel main body positioned at the rear side of the right end of the piston rod. Above-mentioned hydraulic cylinder for integrated push rod of electricity liquid, the bottom of cylinder main part is provided with the stabilizer blade t