A hydraulic power tong without tooth marks
A technology of hydraulic power and tooth marks, which is applied in the direction of drilling equipment, earthwork drilling, drill pipe, etc., can solve the problems of uneven braking force, unreliable clamping performance, and unfixed connection of the main tong, and achieve uniform braking force and Reliable, stable performance, safe and reliable, and the effect of reducing machining hours
Active Publication Date: 2016-08-17
JIANGSU SHENLIDA MACHINERY MFR
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Problems solved by technology
[0003]First, the structure is more complex, the number of parts is large, and the cost is high
[0004]Second, the rotating main tong adopts a single disc brake device, which has a complex structure and uneven braking force
[0005]Third, the clamping performance is unreliable and prone to slippage, causing great damage to the pipe string. Even if the clamp head bites the pipe string, the tooth marks are very deep , Repeated operations in this way will cause damage to the pipe body, and even cause a well drop accident
[0006] Fourth, the front and rear guide rods adopt a column mechanism, which is not fixedly connected with the main tongs. poor performance
Method used
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Embodiment Construction
[0051] The present invention will be further described below in conjunction with the accompanying drawings.
[0052] Such as Figure 1-6 As shown, a hydraulic power tong without tooth marks according to the present invention is mainly composed of a rotating main tong 1 with double brakes and a braking device, a hydraulic cylinder clamping back clamping tongs 2, and a frame-type rear guide rod assembly. 3 and the front guide rod assembly 4; the bottom of the rotating main tongs 1 is fixedly connected with the frame-type rear guide rod assembly 3 and the front guide rod assembly 4 respectively, and the frame-type rear guide rod assembly 3 is clamped with the back tongs 2 and The front guide rod assembly is fixedly connected in 4 phases.
[0053]Further, the rotary master tongs 1 are mainly composed of a safety door 1-1, a housing 1-2, a clamp head clamping device, a double brake band brake device, a double righting mechanism, a hydraulic transmission device and a hydraulic moto...
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The invention relates to the technical field of oil and gas well drilling and serving equipment, in particular to a pair of hydraulic power tongs without tooth marks. The pair of hydraulic power tongs is mainly composed of a main rotating tong of a double-brake-band braking device, a hydraulic cylinder clamping-type clamping back-up tong, a frame-type rear guiding rod assembly and a front guiding rod assembly. The bottom of the main rotating tong is respectively and fixedly connected with the frame-type rear guiding rod assembly and the front guiding rod assembly. The frame-type rear guiding rod assembly is fixedly connected with the front guiding rod assembly through the clamping back-up tong. The pair of hydraulic power tongs has the advantages that the structure is simple, the number of parts is reduced, the machining time is shortened, the production cost is reduced, the braking performance is reliable, it is ensured that braking force of the main tong is even and reliable due to the fact that two brake bands are used, the clamping performance of the main tong is ensured, the skid phenomenon is avoided, damage to the surface of a pipe column is reduced, and the toppling and overturning phenomena in the conveying and using process are avoided.
Description
technical field [0001] The invention relates to the technical field of oil and natural gas drilling and workover equipment, in particular to a hydraulic power tong without tooth marks. Background technique [0002] At present, the known hydraulic power tongs are composed of main parts such as rotating main tongs, clamping back tongs, front and rear guide rod assemblies. Hydraulic motor, pliers head clamping mechanism, pliers head brake mechanism, pliers head righting mechanism, pliers head transmission mechanism and other main components constitute the rotating master tongs; main components such as back tong clamping mechanism and back tong transmission mechanism form clamping back tongs ; The main components such as the guide rod and the cylindrical rotary compression spring form the front and rear guide rod assembly. When working, the main tong is driven by the hydraulic motor to rotate the opening gear, and the brake mechanism of the tong head drives the jaw plate frame ...
Claims
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IPC IPC(8): E21B19/16
Inventor 张秀红
Owner JIANGSU SHENLIDA MACHINERY MFR