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Closed Automatic Locking Mechanism of Elastic Claws for Hydraulic Cylinders

An elastic claw and automatic locking technology, applied in the field of hydraulic cylinders, can solve the problems of complex additional systems, limited reverse thrust, and difficult processing, and achieve the effects of compact shape and structure, shortened working time, and simple oil circuit.

Active Publication Date: 2016-05-04
CHANGZHI QINGHUA MACHINERY FACTORY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Among the mechanical locking mechanisms retrieved so far: the locking of the external pin ball and the external compression sleeve is manual locking; the locking of the screw screw piston rod is automatic operation, but each hydraulic cylinder requires a special power mechanism and power source, additional The system is complex and the mechanism is huge; the conical surface friction compression locking mechanism is simple, but the conical surface compression reverse thrust is limited; the interference locking has very strict requirements on the interference amount, which is controlled between several wires, and at the same time, the raw materials and machining process of the product , The requirements for heat treatment are correspondingly increased, resulting in difficult processing and low yield

Method used

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  • Closed Automatic Locking Mechanism of Elastic Claws for Hydraulic Cylinders
  • Closed Automatic Locking Mechanism of Elastic Claws for Hydraulic Cylinders
  • Closed Automatic Locking Mechanism of Elastic Claws for Hydraulic Cylinders

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as figure 1 As shown, the hydraulic cylinder uses an elastic claw closed automatic locking mechanism, including cylinder barrel 2, rear cylinder cover 3, piston rod 4, piston 5, elastic outer claw 61, inner cone guide lock sleeve 71, inner anti-loosening lock Cover 81 and inner spring 91, elastic outer claw 61 are threadedly connected with rear cylinder cover 3, do not move axially. The inner spring 91 is placed in the inner anti-loosening lock sleeve 81, and is placed together in the inner hole of the piston rod 4 end. 5 Axial limit, the inner cone guide lock sleeve 71 and the inner anti-loosening lock sleeve 81 radially cooperate with the inner hole of the piston rod 4 with clearance. Piston 5, inner cone guide lock sleeve 71, inner anti-loosening lock sleeve 81, inner spring 91 move axially with piston rod 4 telescopic.

[0032] The rodless cavity is composed of piston 5, cylinder barrel 2, rear cylinder cover 3, piston rod 4, and inner locking sleeve 81, and ...

Embodiment 2

[0040] Such as figure 2 As shown, the hydraulic cylinder uses an elastic claw closed automatic locking mechanism, including cylinder barrel 2, front cylinder head 1, piston rod 4, piston 5, elastic inner claw 62, outer cone guide lock sleeve 72, outer anti-loosening lock Cover 82 and outer spring 92. The elastic inner claw 62 is placed in the front cylinder cover 1 groove, and the cylinder barrel 2 and the front cylinder cover 1 are tightened with threads. One end of the cylinder barrel 2 presses the elastic inner claw 62, and the elastic inner claw 62 is axially limited. Outer cone guide lock sleeve 72 is contained on the piston rod 4, and one axial end is limited by 4 steps of piston rod. The outer anti-loosening lock sleeve 82 is contained on the outer cone guide lock sleeve 72, and one axial end is limited by the outer cone guide lock sleeve 72. The outer spring 92 is installed in the groove of the outer anti-loosening lock sleeve 82 and the piston 5, the piston 5 and t...

Embodiment 3

[0049] Closed automatic locking mechanism with elastic jaws for hydraulic cylinders, including front cylinder head 1, cylinder barrel 2, rear cylinder head 3, piston rod 4, piston 5, elastic outer jaws 61, elastic inner jaws 62, inner cone guide Lock sleeve 71, outer cone guide lock sleeve 72, inner anti-loosening lock sleeve 81, outer anti-loosening lock sleeve 82, inner spring 91 and outer spring 92. The elastic inner claw 62 is placed in the front cylinder cover 1 groove, and the cylinder barrel 2 is threadedly connected with the front cylinder cover 1. One end of the cylinder barrel 2 presses the elastic inner claw 62, and the elastic inner claw 62 is axially limited. Outer cone guide lock sleeve 72 is contained on the piston rod 4, and one axial end is limited by 4 steps of piston rod. The outer anti-loosening lock sleeve 82 is contained on the outer cone guide lock sleeve 72, and one axial end is limited by the outer cone guide lock sleeve 72. The outer spring 92 is ins...

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Abstract

The invention belongs to the field of hydraulic cylinders and particularly discloses an elastic clamping claw closed automatic locking mechanism for a hydraulic cylinder. The automatic locking mechanism is simple in appearance and reliable and quick in locking function, no additional operation mechanism is required, single operation action is not required, and the automatic locking mechanism can achieve locking and unlocking action when the hydraulic cylinder achieves the stretching action. The automatic locking mechanism comprises a front cylinder cover, a cylinder barrel, a rear cylinder cover, a piston rod, a piston and a locking mechanism body. The cylinder barrel is connected with the front cylinder cover and the rear cylinder cover through threads, the outer diameters of two ends of the cylinder barrel are in clearance fit with the inner walls of the front cylinder cover and the rear cylinder cover, the piston rod is step-shaped on the whole, the piston rod penetrates the front cylinder cover to be movably arranged in the cylinder barrel, the piston is in threaded connection with the piston rod, and the inner wall of the piston is in clearance fit with the outer diameter of the small end of the piston rod. The locking mechanism comprises an elastic clamping claw and a guide locking sleeve which are interlocked to achieve a locking effect when the piston rod is stretched out or retreated backwards.

Description

technical field [0001] The invention belongs to the field of hydraulic cylinders, and in particular relates to a closed-type automatic locking mechanism with elastic claws for hydraulic cylinders, which is mainly used for military equipment, civil engineering vehicles or other pump sources that do not work but can be reliably locked for a long time without Any soft leg phenomenon in the hydraulic cylinder. Background technique [0002] In the fields of national defense, engineering, mining, metallurgical machinery and water conservancy projects and other national economic production fields, hydraulic cylinders (air cylinders and hydraulic cylinders have the same working principle, the following content is referred to as hydraulic cylinders) are used as actuators that drive and bear large loads. It is often required to have a locking and positioning function when working and not working, that is, to support the external load stably for a long time without displacement when wo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F15B15/26
Inventor 武丽明武向宇杨护红胡秀全韩晓马雷鹏田海明王浩
Owner CHANGZHI QINGHUA MACHINERY FACTORY
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