Hydraulic break-out tongs with screw thread protection function

A technology of protection function and screw thread, which is applied in the direction of drilling equipment, earthwork drilling, drill pipe, etc., can solve problems such as easy slipping, and achieve the effect of high degree of automation, strong breaking capacity, and convenient disassembly and assembly

Active Publication Date: 2014-03-19
XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most domestic vehicle-mounted rigs use a shackle device with pad forks and hydraulic pipe tongs. This device has a simple structure, but requires manual assistance, the shackle position is fixed, and it is easy to slip. Shackle tongs with strong buckling capacity and protection function for drill pipe thread

Method used

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  • Hydraulic break-out tongs with screw thread protection function
  • Hydraulic break-out tongs with screw thread protection function
  • Hydraulic break-out tongs with screw thread protection function

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Embodiment Construction

[0015] The present invention will be described in detail below in conjunction with the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, so as to define the protection scope of the present invention more clearly.

[0016] Such as figure 2 , 3 As shown, the hydraulic shackle tongs with screw protection function of the present invention include a bearing 1, a swing arm 2, a slewing support 3, a motor 4, a support 5, a support seat 6, a shackle cylinder 7, a lifting cylinder 8, a support Arm 9 , pin shaft 10 , lifting frame 11 , upper swivel track 12 , shackle pliers 13 , lower swivel track 14 and clamping pliers 15 . Among them, the tongs are connected and fixed on the frame of the drilling rig by the support 5; the swing arm 2 is connected to the two supports 5 through the slewing support 3 and the bearing 1; 10 is fixed, and can quickly disassemble the swing arm 2 and the support ar...

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Abstract

The invention discloses a pair of hydraulic break-out tongs with a screw thread protection function, which comprises a bearing 1, a swing arm 2, a slewing support 3, a motor 4, a pedestal 5, a bracing seat 6, a break-out oil cylinder 7, a lifting oil cylinder 8, a bracing arm 9, a pin shaft 10, a hoisting frame 11, an upper rotary rail 12, a break-out tong part 13, a lower rotary rail 14 and a clamping tong part 15. The pair of break-out tongs is high in automation degree, convenient to mount and dismount and strong in break-out capability, can quickly realize actions of swing, lifting, clamping, as well as drilling rod screwing and dismounting, and has the drilling rod screw thread protection function during break-out.

Description

technical field [0001] The patent of the present invention relates to a hydraulic shackle tongs with thread protection function, which is suitable for shackles of drill pipes of vehicle-mounted drilling rigs. Background technique [0002] The shackle is an important step in the tripping process during the drilling process of the vehicle-mounted drilling rig. The purpose is to release the first buckle connected by the drill pipe. The required torque is large, often reaching 2 to 3 times the rotary torque. For shackles, the lower tongs are generally used to fix the lower drill pipe, and the upper tongs clamp the upper drill pipe to reverse to achieve the purpose of unloading the drill pipe. During the unscrewing process, the distance between the upper and lower tongs must increase with the disengagement of the thread. , to ensure that the thread will not be squeezed and damaged. When the vehicle-mounted drilling rig is transported, since the shackle tongs are located at the t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B19/16
Inventor 田宏亮凡东常江华李栋
Owner XIAN RES INST OF CHINA COAL TECH& ENG GROUP CORP
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