Single-sleeve type double-cylinder hydraulic clamp and using method thereof

By designing the movable ring structure in a single-set twin-cylinder hydraulic pliers, the problem of uneven force when connecting the steel bars is solved, and the uniform connection and stability of the sleeve to the steel bars is improved.

CN119972988AActive Publication Date: 2025-05-13SHANDONG HENGJI INTELLIGENT EQUIP CO LTD
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Patent Information

Application Number
CN202510331657.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-03-20
Publication Date
2025-05-13
Estimated Expiration
2045-03-20

AI Technical Summary

Technical Problem

When the existing twin-cylinder hydraulic clamps are connected to the steel bars with uneven force when extruding the sleeve, they affect the connection effect and shorten their service life.

Method used

A single-set twin-cylinder hydraulic clamp is designed. By combining the top ring and the bottom ring of the movable ring, the sleeve is extruded and deformed on the top ring of the movable ring, thereby achieving uniform connection of the steel bars.

Benefits of technology

Through the movable ring, the casing is fully wrapped, so that the stress of the casing is more uniform when deformed, improving the stability of the casing to the steel bar connection and extending the service life.

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Abstract

The invention discloses a single-sleeve type double-cylinder hydraulic clamp and a using method thereof, and relates to the technical field of mechanical connection.The double-cylinder hydraulic clamp comprises a cylinder body, the cylinder body comprises a cylinder inner cavity and a cylinder outer sleeve, a piston rod in the cylinder inner cavity is connected with an upper jaw, a piston rod of the cylinder outer sleeve is connected with a lower jaw, and the lower jaw is connected with a piston rod in the cylinder outer sleeve. The device further comprises a movable ring, a containing groove is formed in the top end of the lower jaw, the movable ring is arranged in the containing groove, the movable ring is divided into a top ring for containing a sleeve and a bottom ring for extruding the sleeve, the diameter of the top ring is larger than that of the bottom ring, and the top ring and the bottom ring are connected through a slope ring body. When the casing pipe is used for connecting the steel bars, the casing pipe wraps the outer walls of the two steel bars, the lower jaw and the top ring of the movable ring are arranged on the casing pipe in a sleeving mode, the cylinder body drives the lower jaw to move upwards, the lower jaw drives the movable ring and the casing pipe to move upwards, the movable ring extrudes and deforms the casing pipe, and the casing pipe is connected with the cylinder body. And the casing pipe is used for connecting the reinforcing steel bars.
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Citation Information

Patent Citations

  • Reinforcing steel bar mechanical connecting device

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  • Buckling type steel bar connector

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  • Double-cylinder-sleeve type steel bar connecting tool and steel bar connector

    CN220539244U

  • Single-cylinder double-piston-rod type steel bar connecting tool

    CN220550878U