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Thread screw on and-off machine for sleeve oil pipe

A technology of screwing machine and tubing, which is applied in the direction of casing, drill pipe, drilling equipment, etc. It can solve the problems of complex structure and hydraulic system, large size, and difficult manufacturing, and achieves compact structure, easy operation, and convenient jaw plate replacement. Effect

Active Publication Date: 2007-04-11
江苏如石机械股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that the structure and hydraulic system are more complicated, it is more difficult to manufacture, and the size is too large

Method used

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  • Thread screw on and-off machine for sleeve oil pipe
  • Thread screw on and-off machine for sleeve oil pipe
  • Thread screw on and-off machine for sleeve oil pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0052] In Fig. 1, the casing tubing screwing machine is composed of a base 1, an air storage tank 2, a tailstock 3, a back tong 4, an air control system 5, a main tong 6, a hydraulic control system 7, a moving cylinder 8, and an air purification device 121 and so on.

[0053] In Fig. 2, the main tongs are composed of the main tong body 6, the right end cover 19 and the left end cover 42 fixed on the main tong body 6, the support roller group 17 installed on the right end cover 19 and the left end cover 42, and the support roller group The large gear 22 supported by 17, the left jaw plate frame 41 and the right jaw plate frame 13 arranged on the left and right sides of the large gear 22, the clamping mechanism 32 located in the inner circle of the large gear 22, and the clamping mechanism 32 placed on the right jaw plate frame 13 Pretensioning device 14, reversing pin assembly 40 installed on the left jaw plate frame 41, gear transmission system 9 meshed with the large gear 22,...

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PUM

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Abstract

The oil pipe screwing in and out machine consists of pedestal, air holder, tail stock, back tongs system, air controlling system, main tongs system, hydraulic system, moving cylinder, air purifier, etc. The main tongs system consists of main tongs body, end cap, bearing rollers, big gear, gear driving device, main tongs torque measuring device and other parts; and the back tong system consists of back tongs body, clamping mechanism, back tongs torque monitoring device and other parts. The present invention has compact structure, simple operation, closing fitting between the main tongs and the back tongs and other advantages.

Description

[0001] Field [0002] The invention relates to a casing and tubing screwing machine. The function of the machine is to connect the casing collar and the casing or the tubing collar and the thread of the oil pipe, or to untie their threads to meet the needs of oil exploration. development needs. technical background [0003] At present, the casing and tubing twisting machines used in oil exploration and development enterprises and casing and tubing production enterprises have various deficiencies, among which the problem of pipe clamping is the biggest. Most of the clamped places are in line contact, and there are few action points, which may easily cause deformation or even damage to the coupling or pipe fittings. People have thought of many ways to solve these problems. The casing and oil pipe screwing machine of U.S. Patent No. 4,739,681 is one example. It is to install three planetary gears on the inner ring gear of the pincer head gear, each with an eccentric The crank l...

Claims

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Application Information

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IPC IPC(8): E21B19/16
Inventor 谢友清唐剑虹
Owner 江苏如石机械股份有限公司