Fast-extending and slow-contracting hydraulic cylinder

A technology of hydraulic cylinders and cylinder barrels is applied in the field of fast-stretching and retractable hydraulic cylinders and hydraulic cylinders.

Inactive Publication Date: 2015-11-11
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the common problems of existing hydraulic cylinders in use, such as large resistance, slow extension, retraction buffer failure, etc., the present invention provides a fast-expanding and slow-retracting hydraulic cylinder that can effectively solve the above problems.

Method used

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  • Fast-extending and slow-contracting hydraulic cylinder
  • Fast-extending and slow-contracting hydraulic cylinder
  • Fast-extending and slow-contracting hydraulic cylinder

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Embodiment

[0023] Such as figure 1 As shown, a fast-stretching and slow-retracting hydraulic cylinder of the present invention mainly includes a cylinder barrel 6, a piston rod 7, a piston 4, a buffer sleeve 3, a spray channel 2, an acceleration sleeve 5, a guide buffer sleeve 9, an end cover B13 and end cover A1, end cover B13 and end cover A1 are installed on both ends of cylinder 6 through threaded connection, acceleration sleeve 5, piston 4, buffer sleeve 3 are installed on piston rod 7 through threaded connection in turn, guide buffer sleeve 9 Installed on the piston rod 7, the spray channel 2 is opened on the cylinder 6 on the side close to the buffer sleeve 3; the two ends of the same side of the cylinder 6 are opened with oil port A17 and oil port B23, and the oil port A17 is close to the end cover B13 , Oil port B23 is close to end cover A1.

[0024] to combine figure 2 As shown, one end of the piston rod 7 has an external thread. The middle part of piston 4 is provided with...

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PUM

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Abstract

The invention provides a fast-extending and slow-contracting hydraulic cylinder. The hydraulic cylinder mainly comprises a cylinder barrel, a piston rod, a piston, a buffer sleeve, a jet flow passage, an acceleration sleeve, a guide buffer sleeve, an end cover B and an end cover A. The fast-extending and slow-contracting hydraulic cylinder is characterized in that the piston rod can extend fast and contract slowly. According to the fast-extending and slow-contracting hydraulic cylinder, the buffer sleeve with one inwardly concave side and an angular jet flow passage are arranged, so that the slow contracting of the piston rod is realized; the parabola-shaped acceleration sleeve is arranged, so that the fast extending of the piston rod is realized; the parabola-shaped inwardly-concave guide buffer sleeve is arranged, and an annular blind hole is formed in the guide buffer sleeve, so that buffer stop of the acceleration sleeve is realized, the extension length of the piston rod is increased, and soft start contraction of the piston rod is realized; a check valve is arranged on the cylinder barrel, so that high-pressure air in the cylinder is discharged; elastic pads are arranged between the end cover B and the guide buffer sleeve, so that impact on the guide buffer sleeve generated by fluid is absorbed; oil grooves and sealing rings are arranged on the outer side surface of the piston, so that oil leakage, temporary storage of impurities in oil and sealing of the piston are realized.

Description

technical field [0001] The invention relates to a fast-extending and slow-retracting hydraulic cylinder, in particular to a method for realizing the slow retraction of the piston rod through a concave buffer sleeve on one side and an angular spray channel; through the parabola-shaped concave buffer sleeve and the annular blind hole on it to realize the buffer stop of the acceleration sleeve, to increase the extension length of the piston rod and to start and retract the plug rod flexibly; through the one-way valve on the cylinder to realize the cylinder Discharge of internal high-pressure gas; through the elastic pad between the end cover B and the guide buffer sleeve, absorb the impact kinetic energy of the fluid on the guide buffer sleeve; through the oil groove and sealing ring on the outer surface of the piston, oil leakage and impurities in the oil can be temporarily eliminated. Storage and piston sealing belong to the technical research and development field of hydraulic...

Claims

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Application Information

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IPC IPC(8): F15B15/14F15B15/20
CPCF15B15/1428F15B15/1433F15B15/1447F15B15/1452F15B15/1457F15B15/20
Inventor 安延涛赵东杨可森杨玉娥刘鲁宁
Owner UNIV OF JINAN
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