CN201183730Y

CN201183730Y - Improved derrick hoisting device

Info

Publication number: CN201183730Y
Application number: CNU2007203001374U
Authority: CN
Inventors: 赵伟; 徐军; 李建平
Original assignee: SJ Petroleum Machinery Co
Current assignee: SJ Petroleum Machinery Co
Priority date: 2007-12-19
Filing date: 2007-12-19
Publication date: 2009-01-21
Anticipated expiration: 2017-12-19

Abstract

The utility model relates to an improved derrick lifting appliance which belongs to the assorted device for an oil field drill and a workover rig. The improved derrick lifting appliance comprises a traveling vehicle traveling about in the derrick, fixed pulleys which are symmetrically fixed at both sides of the top of a derrick substructure, movable pulleys which are symmetrically fixed at both sides of the bottom of each section of derrick to be mounted, and two lifting ropes which respectively bypass the fixed pulley and the movable pulley at one side. One end of each of the two lifting ropes is movably connected with the traveling vehicle, and the other end is respectively and movably connected with the bottom of the derrick to be mounted. The improved derrick lifting appliance has the advantages that one end of each lifting ropes is movably connected with the bottom of the derrick to be mounted instead of being connected with the bottom of the derrick substructure, the labor-saving role of the fixed pulleys is played, load bearing by four sections of rope is changed into load bearing by six sections of rope when lifting, the load of the lifting ropes becomes lower, the stress of a derrick doorframe is improved, and deformation is avoided; after the stress of the lifting ropes becomes less, thickening is not necessary, and the service life is prolonged.

Description

A kind of improved derrick bont

Technical field

The utility model relates to oil drilling machine, service machine corollary apparatus, especially promotes the device of derrick.

Background technology

The vertical type suit derrick of progressively promoting the use of in recent years, be the upright unitized construction of more piece, its bottom is a derrick base, be fixed on the rig floor, derrick base is upwards connecting successively and is respectively saving the derrick body, on the derrick body epimerite overhead traveling crane is housed, moving about, the empty tourist bus that promotes and transfer thribble is connected on the winch through overhead traveling crane by big rope in derrick.The installation of this derrick, referring to Fig. 1, Fig. 2, derrick is a symmetrical structure, installation is earlier derrick base 1 to be fixed on ground, the derrick epimerite 3 that will install overhead traveling crane 2 again is lifted in the skeleton frame at derrick base 1 top, bilateral symmetry at derrick base 1 top is installed fixed pulley 4, in the bilateral symmetry of every joint derrick to be installed 5 bottoms movable pulley 6 is installed, two hoisting ropes 7 are respectively walked around the fixed pulley and the movable pulley of a side, an end is fixed on the bottom of derrick base, other end symmetry is connected on the tourist bus 8, start winch, tourist bus promotes derrick to be installed, promotes a joint, fix a joint, finish the installation that respectively saves the derrick body.The structure of this bont, because hoisting rope one end is fixed on the derrick base 1, when promoting, actual being equivalent to by the A section and the B section of hoisting rope of load shared, along with the increase of derrick joint number, the load of hoisting rope is increasing, increases at the horizontal component of force of movable pulley to the rope B section of tourist bus thereupon, make and easily cause the doorframe distortion by the stressed also increasing of derrick doorframe C place; On the other hand, along with the application of the upright suit derrick of the wide type of heavy type, big drag load, require the diameter of hoisting rope should the phase strain big, yet, because the restriction of structure space, the size of movable pulley can not increase, thereby hoisting rope can not use due rugosity, and this makes hoisting rope very without usefulness.

Summary of the invention

The purpose of this utility model, provide a kind of improved derrick bont, make when promoting by the load-bearing of multistage hoisting rope, to reduce the stressed of hoisting rope, thereby reduce the hoisting rope movable pulley to tourist bus section horizontal component of force to the extruding of derrick doorframe so that produce distortion, also solve not overstriking of hoisting rope simultaneously and the problem that increases the service life.

Structure of the present utility model, comprise that two fixed pulleys, symmetry that move about in the derrick tourist bus among the sky, symmetry are installed in both sides, derrick base top are installed in two movable pulleys that respectively save derrick two bottom sides to be installed, respectively walk around two hoisting ropes of a side fixed pulley, movable pulley, one end of two hoisting ropes activity symmetrically is connected in tourist bus, it is characterized in that the movable respectively bottom that is connected in this side derrick to be installed of the other end of two hoisting ropes.

The beneficial effects of the utility model are: an end of hoisting rope is changed in the derrick base bottom from being fixedly connected be actively connected on derrick to be installed bottom, make the laborsaving effect of fixed pulley obtain performance, make when promoting and become by the load-bearing of 6 sections ropes by the load-bearing of 4 sections ropes of two sides, thereby the load of hoisting rope diminishes, the horizontal component of force of ran B is reduced, the stressed of derrick doorframe alleviated like this, avoids distortion; Behind stressed the diminishing of hoisting rope, needn't overstriking, also obtain its service life prolonging.

Description of drawings

Structural representation when Fig. 1 works for derrick bont before improving;

Fig. 2 is the left view of Fig. 1;

Structural representation when Fig. 3 works for the utility model;

Fig. 4 is the left view of Fig. 3;

Fig. 5 is Fig. 4 I place enlarged drawing.

The specific embodiment

Below in conjunction with accompanying drawing the utility model is described.

Referring to Fig. 3, Fig. 4, the utlity model has symmetry and be installed in two fixed pulleys 4 of both sides, derrick base 1 top, symmetry is installed in each two movable pulley 6 that save derrick 5 two bottom sides to be installed, respectively walk around two hoisting ropes 7 of a side fixed pulley and movable pulley, the tourist bus 8 that links to each other with big rope with overhead traveling crane 2 on being contained in derrick epimerite 3, described derrick epimerite 3, be lifted in advance on the skeleton frame at derrick base 1 top, before promoting each time, derrick 5 to be installed all connects with the joint derrick of going up that has promoted, one end of two hoisting ropes 7 is connected in tourist bus 8 symmetrically, other end activity is connected in the bottom of this side derrick to be installed separately, start winch, make tourist bus derrick to be installed be risen to the position that needs, after fixing, carry out the installation of next joint derrick again, finally finish the installation that respectively saves derrick.The form that hoisting rope connects with the activity of derrick to be installed can have multiple, be easy operation, can adopt this routine coupling type, see Fig. 5, at the bottom of derrick 5 to be installed welding otic placode 9, at the movable union end coupling hook 10 of hoisting rope 7, when promoting derrick, hook otic placode on the derrick to be installed as long as will walk around the hoisting rope of movable pulley and fixed pulley on the derrick to be installed, can start winch and promote.

Claims

1. improved derrick bont, comprise that fixed pulley, symmetry that move about in the derrick tourist bus among the sky, symmetry are fixed on both sides, derrick base top are fixed on the movable pulley that respectively saves derrick two bottom sides to be installed, walk around two hoisting ropes of a side fixed pulley, movable pulley respectively, one end of two hoisting ropes is connected in tourist bus symmetrically, it is characterized in that the movable respectively bottom that is connected in this side derrick to be installed of the other end of two hoisting ropes.

2. a kind of improved derrick bont according to claim 1 is characterized in that, it is coupling type that hoisting rope connects form with the activity of derrick to be installed bottom.