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Hydraulic abdomen lifting oil cylinder

A technology for lifting oil cylinders and hydraulic oil, which is applied in the field of hydraulic oil cylinders, and can solve problems such as loss of efficacy, affecting the working efficiency of oil cylinders, and large leakage, and achieves the effects of improving quality, ensuring sealing, and reducing processing difficulty

Pending Publication Date: 2019-03-12
山东弘发兴凯实业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The processing accuracy of the limit valve sleeve and valve stem in the piston determines the amount of internal leakage. If the processing accuracy is low, the leakage will be large, which will result in loss of efficacy and affect the working efficiency of the cylinder.

Method used

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  • Hydraulic abdomen lifting oil cylinder
  • Hydraulic abdomen lifting oil cylinder
  • Hydraulic abdomen lifting oil cylinder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0017] Reference Figure 1-Figure 2 The hydraulic abdominal lifting cylinder described in this embodiment includes a cylinder block 1, a cylinder bottom 2, a cylinder head 3, and a piston 4 and a piston rod 5 arranged in the inner cavity of the cylinder block 1. among them:

[0018] The cylinder bottom 2 is welded to the bottom end of the cylinder block 1, and a hydraulic oil channel 6 is provided in the cylinder bottom 2, and the hydraulic oil channel 6 communicates with the inner cavity of the cylinder block 1. The cylinder bottom 2 is provided with an oil inlet, and an oil inlet pipe welding piece 28 is connected to the oil inlet, and the oil inlet pipe welding piece 28 communicates with the hydraulic oil channel 6.

[0019] The cylinder head 3 is fixedly installed on the top end of the cylinder block 1 by bolts, and a first O-ring seal 7 is provided between the cylinder head 3 and the cylinder block 1. The cylinder head 3 is provided with an oil outlet, and an oil outlet pipe...

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Abstract

The invention relates to the technical field of hydraulic oil cylinders, in particular to a hydraulic abdomen lifting oil cylinder. The hydraulic abdomen lifting oil cylinder comprises a cylinder body, a cylinder bottom, a cylinder cover, a piston and a piston rod, wherein the piston and the piston rod are arranged in an inner chamber of the cylinder body. The piston is internally provided with asplit type hydraulic limiting valve. The split type hydraulic limiting valve comprises a one-way vale seat, a limiting valve rod, a limiting valve bush and a compression spring, wherein the one-way valve seat is inlaid into the piston; the limiting valve bush is mounted at the end of the limiting valve rod in a sleeving manner; and the compression spring is fixedly arranged on the one-way vale seat. The tail end of the one-way vale seat is fixed to the piston through a circlip for a hole. The portion between the one-way vale seat and the piston is sealed through a fourth O-shaped seal ring. The limiting valve rod penetrates the front end and the rear end of the one-way vale seat, and the top end of the limiting valve rod is provided with a split pin used for fixing the compression spring.According to the hydraulic abdomen lifting oil cylinder, the independent hydraulic limiting valve is arranged inside the piston, and the machining difficulty of the piston is lowered; seal performanceof the piston is guaranteed; the leakage rate inside the oil cylinder is lowered; and the work efficiency of the oil cylinder is guaranteed.

Description

Technical field [0001] The invention relates to the technical field of hydraulic oil cylinders, in particular to a hydraulic abdominal lifting oil cylinder. Background technique [0002] Hydraulic cylinders are widely used hydraulic machinery components in the automotive industry. Abdominal lifting hydraulic cylinders are common structural forms and are widely used in dump trucks with functions such as lifting, pushing and pulling. They are stable in work, easy to use, and powerful in structure. Features. [0003] Traditional abdominal lift hydraulic cylinder (refer to its specific structure image 3 , Figure 4 ) Produced in accordance with the technical conditions of the hydraulic cylinder of the dump truck in the automobile industry standard of the People’s Republic of China QC / T460-2010. When the cylinder is working, the hydraulic oil is input through the oil inlet to push the valve rod in the cylinder bottom to rise, and the valve rod pushes the piston rod in turn When the pis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B15/14F15B15/24
CPCF15B15/1447F15B15/24F15B2215/30
Inventor 尹亮张保兰张凯支婧
Owner 山东弘发兴凯实业股份有限公司
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