Hydraulic pliers

A hydraulic tong, hydraulic technology, applied in the field of hydraulic tongs, to achieve the effect of simple installation, reduce labor intensity, and avoid potential safety hazards
CN101429856AInactive Publication Date: 2009-05-13LIAOHE GASOLINEEUM EXPLORATION BUREAU +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
LIAOHE GASOLINEEUM EXPLORATION BUREAU
Publication Date
2009-05-13
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to an oil field well workover treatment tool, in particular to hydraulic tongs capable of realizing the automatic loading / unloading of an oil pipe and a sucker rod. The hydraulic tongs comprise main tongs, back tongs, a high-low-speed gear shift mechanism and a connecting support. The back tongs are arranged on the connecting support; the main tongs are positioned above the back tongs and are connected with the back tongs through a guide bar; and the main tongs can reciprocate up and down along the guide bar. The high-low-speed gear shift mechanism is arranged on the main tongs; the output end of the high-low-speed gear shift mechanism is connected with a gear shift device inside the main tongs; and the high-low-speed gear shift mechanism is also connected with a hydraulic control module. The hydraulic tongs are connected with a hydraulic tongs telescopic bracket of the machine body of the well workover machine through the connecting support. The hydraulic tongs are driven by the telescopic bracket to realize automatic telescoping, thereby freeing operators from a dangerous operating environment. Automatic operation is realized for the loading / unloading of the hydraulic tongs, thereby not only reducing the labor intensity of workers, but also avoiding possible accidental injury of workers during the operation.
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Description

technical field

[0001] The invention relates to a workover tool in an oil field, in particular to a hydraulic pliers for realizing automatic make-up and break-out of oil pipes and sucker rods. Background technique

[0002] During the workover operation in the oil field, a lot of work is to connect or disassemble drill pipes, oil pipes, sucker rods and other workpieces, and then extract them one by one from the oil well or lower them into the oil well. Most of the workpieces such as connecting or disconnecting oil pipes or sucker rods are completed by hydraulic pliers. During workover operations, hydraulic tongs are usually used in pairs (the upper one is called the main tong, and the lower one is called the backup tong), which mainly consists of a hydraulic drive motor, a transmission gear and a jaw assembly, and the hydraulic drive is driven through the transmission gear. The output power of the motor is transmitted to the clamping tooth assembly, which makes the clamping ...

Claims

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