CN2611573Y - Anti-torque pull head - Google Patents

Abstract

The utility model discloses a torsionproof pull head, which is installed between the transfer gear and the pull-back pipeline of the drill. The utility model is composed of a connector, a pull head body, lateral wings, a small pull head, a clay mortar channel, slabs and the like. The essential features of the utility model are that, the pull head body is a conical hollow body which is provided with the connector at the top, the small pull head at the bottom, the lateral wings on two sides, and the clay mortar channel on the outer wall, further the inner of the hollow body is provided with slabs, which is mainly used to resolve the torsion question of the pull-back pipeline in non-excavated pipe-laying construction.

Description

Anti-torque pull head

One, technical field

The utility model relates to the rig in a kind of trenchless pipelaying construction, particularly relates to a kind of Anti-torque pull head of rig trombone slide last time bundle, goes into E21B12/00.

Two, background technology

When in municipal power engineering construction, adopting trenchless engineering, after operations such as playing pilot hole, what reaming has been constructed, the pipeline (pipeline) of will pulling back.What pull back usually is the PE pipe, and the tube bank of at every turn pulling back is made up of many pipelines.Generally, connect squeezed device behind the drilling rod, connect transfer gear behind the squeezed device, take back the trombone slide line behind the transfer gear.Ideally, transfer gear is not passed to the pipeline of pulling back by transfer device with the moment of torsion of squeezed device, and pipeline only travels forward and do not rotate along drilling axis.But in actual the use, because the inner friction of transfer gear is passed to the pipeline of pulling back with the part moment of torsion, this will cause the pipeline rotation, and figuratively speaking pipeline becomes " deep-fried twisted dough sticks " shape, becomes " fried dough twist " shape when serious, and this is unallowed on the electric power pipe laying.In order to solve tube bank rotation problem, the unit in charge of construction that has pulls back the pipeline binding, though distortion is reduced to some extent, but can not satisfy technical requirements, also do not tackle the problem at its root, and the binding operation is numerous and diverse.

Three, utility model content

The purpose of this utility model is at the transfer gear and the Anti-torque pull head of design of pulling back between the pipeline, with the pull back distortion problem of pipeline of solution.This Anti-torque pull head can adopt following technical scheme to implement: it is made up of component such as joint, drawing head body, slurry channel, flank, little pull head, gussets.Its center tap is welded on the top of drawing head body, plays pull head and transfer gear interconnect function.Drawing head body is welded by hollow cone and hollow Cylinder, has the hole of adorning little pull head on the base plate of drawing head body, and little pull head is housed in the hole, and what (also being the number of little pull head) in hole are by the hauling pipe line number decision that connects behind the pull head.With four holes is example (as shown in Figure 1), and the drawing head body bilateral symmetry is welded with flank, passes to the moment of torsion of pull head with the balance transfer gear owing to rub.The resistance that brings to drilling rod when working in order to reduce pull head evenly is provided with slurry channel around the drawing head body, so that mud can pass through smoothly in the hole.Drawing head body inside is welded with gusset, to improve the bulk strength of Anti-torque pull head, little pull head is contained in the hole on the drawing head body base plate, the external diameter of little pull head is less than the aperture, so little pull head can rotate freely, little pull head neck is welded with a circle reinforcing bar, prevent that little pull head from coming off in drawing head body, pull head and the connected mode of returning the hauling pipe line as shown in Figure 3, the afterbody of little pull head has bolt hole, the iron hoop that returns in the hauling pipe line is connected with little pull head by bolt.Anti-torque pull head according to technique scheme design compared with prior art has following advantage: 1, since Anti-torque pull head place transfer gear and pull back between the pipeline, flank segment insertion hole wall stratum during work on the drawing head body, the power that the hole wall stratum acts on the flank provides reaction torque to Anti-torque pull head, pass to the moment of torsion of Anti-torque pull head with the balance transfer gear owing to rub, this moves and does not rotate along drilling axis in boring with regard to having guaranteed Anti-torque pull head, prevents the distortion of bale of pipeline effectively; 2, because little pull head can be along self axis rotation and horizontal movement in drawing head body, on the one hand can be when installing back the trombone slide wire terminal adjustable range, can reduce the moment of torsion that drawing head body is passed to the rear tube line again on the other hand, therefore, Anti-torque pull head comes down to the twin-stage Anti-torque pull head; 3, drawing head body around evenly be provided with slurry channel so that mud passes through smoothly in the hole, this also can reduce the unnecessary volume and weight of pull head.

Four, description of drawings

Fig. 1, Anti-torque pull head profile state figure.

Fig. 2, Anti-torque pull head right view.

Fig. 3, Anti-torque pull head connect schematic diagram with pipeline.

Fig. 4, Anti-torque pull head structural representation.

Five, the specific embodiment

Anti-torque pull head of the present utility model can be implemented with reference to Fig. 1, mode shown in Figure 4, and as shown in the figure, Anti-torque pull head is made up of joint (1), drawing head body (8), slurry channel (2), flank (3), little pull head (4), gusset component such as (9).Its center tap (1) is welded on the top of drawing head body (8), drawing head body is welded by hollow cone and hollow Cylinder, have the hole of adorning little pull head on the base plate of drawing head body, little pull head (4) is housed in the hole, the drawing head body bilateral symmetry is welded with flank (3), evenly be provided with slurry channel (2) around the drawing head body, drawing head body inside is welded with gusset (9).Little pull head neck in drawing head body is welded with a circle reinforcing bar (10), prevents that little pull head from coming off in drawing head body.Connect by mode shown in Figure 3 during the Anti-torque pull head work formed according to said structure and get final product.

Claims (2)

1, a kind of Anti-torque pull head of forming by joint (1), drawing head body (8), slurry channel (2), flank (3), little pull head (4), gusset component such as (9), it is characterized in that joint (1) is welded on the top of drawing head body (8), drawing head body is welded by hollow cone and hollow Cylinder, have the hole of adorning little pull head on the base plate of drawing head body, little pull head (4) is housed in the hole, the drawing head body bilateral symmetry is welded with flank (3), evenly be provided with slurry channel (2) around the drawing head body, drawing head body inside is welded with gusset (9).

2, the hauling pipe line number decision that Anti-torque pull head according to claim 1, the quantity that it is characterized in that the hole of adorning little pull head offered on the drawing head body base plate connect after by pull head.

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