CN223984450U

CN223984450U - A low center of gravity automatic offline drilling rig

Info

Publication number: CN223984450U
Application number: CN202520847337.XU
Authority: CN
Inventors: 夏景龙; 刘欢; 张文亮; 陈洪坤; 邹佳原
Original assignee: Aksu Zhongman Oil And Gas Exploration And Development Co ltd
Current assignee: Aksu Zhongman Oil And Gas Exploration And Development Co ltd
Priority date: 2025-04-30
Filing date: 2025-04-30
Publication date: 2026-03-10
Anticipated expiration: 2035-04-30

Abstract

This invention provides a low-center-of-gravity automatic offline drilling rig, solving the problem that integrating the core equipment for hoisting drill pipes at the top of the derrick would cause the overall center of gravity of the equipment to shift upwards, affecting the overall stability of the derrick. By placing the winch and drive unit in the hoisting system at the bottom of the derrick, this invention reduces the weight at the top of the derrick, lowers the center of gravity, improves the overall stability of the derrick, and reduces the risk of tilting or even overturning. A first pulley is installed at the top of the derrick, allowing the hoisting cable to pass upwards over the pulley and connect downwards to the overhead crane for lifting and lowering operations.

Description

Automatic off-line drilling machine with low gravity center

Technical Field

The utility model relates to the technical field of land drilling machines, in particular to an automatic off-line drilling machine with a low gravity center.

Background

In oil drilling operation, an automatic off-line drilling machine is used as key supporting equipment of a main drilling machine to bear drill rod pretreatment, storage and transfer tasks, and the automation level and the structural stability of the automatic off-line drilling machine directly influence the overall drilling efficiency. In order to expand the working range, the traditional automatic offline drilling machine generally integrates core equipment (such as a driving motor, a pulley block and a control unit) for hoisting a drill rod at the top of a derrick, but can realize large-span hoisting, but can lead to the whole equipment to move upwards in a centering way, so that the whole stability of the derrick is influenced, and meanwhile, the top assembly is overlapped with the load of the hoisting drill rod, so that the risk of tilting or even overturning the derrick is increased, the derrick structure is forced to need an auxiliary framework for strengthening and supporting, and the equipment is heavy and the equipment cost is increased.

Disclosure of utility model

In order to solve the problem that in the background technology, core equipment for hoisting a drill rod is integrated at the top of a derrick, so that the whole equipment is moved upwards in a centering way, and the stability of the whole derrick is influenced, the utility model provides a low-gravity-center automatic off-line drilling machine.

The technical scheme of the utility model is that the low-gravity-center automatic off-line drilling machine comprises a derrick extending along the up-down direction, wherein the bottom end of the derrick is hinged on a base, a lifting mechanism is arranged on the base and connected with the derrick, the lifting mechanism is used for driving the derrick to rotate along the hinged position with the base, a crown block is arranged on the derrick, the right side of the derrick is of an opening structure, the crown block is positioned at the opening of the right side of the derrick, and a lifting appliance is arranged on the crown block and used for grabbing and releasing a drill rod;

The lifting system is arranged on the derrick and is in transmission connection with the crown block to drive the derrick to lift, specifically, the bottom end of the derrick is fixedly provided with a plate seat extending leftwards and horizontally, the lifting system comprises a winch fixedly arranged on the plate seat, the winch comprises a winding drum, a sling is wound on the winding drum, a driving device is arranged on the plate seat, an output shaft of the driving device is in transmission connection with the winding drum of the winch through a coupling, a first pulley is arranged on the top end of the derrick through a pulley seat, one end of the sling is fixedly arranged on the winding drum of the winch, and the other end of the sling upwards bypasses the top of the first pulley and is downwards connected onto the crown block.

Preferably, the crown block is internally rotated and is provided with a second pulley, the top of the derrick is fixedly provided with a fixing plate which horizontally extends rightwards, the fixing plate is provided with a sling anchoring hole, the other end of the sling is wound around the first pulley to downwards extend, the bottom of the sling is wound around the second pulley to be upwards anchored in the sling anchoring hole of the fixing plate, and a movable pulley structure is jointly formed between the second pulley and the sling.

Preferably, the top end of the derrick is fixedly provided with a frame which horizontally extends leftwards, a third pulley is arranged on the frame, the third pulley is positioned at the left side of the first pulley, and after the sling is led out from the winch drum, the sling is wound on the top of the third pulley upwards and then wound on the top of the first pulley rightwards.

Preferably, the first pulley, the second pulley and the third pulley are multi-groove pulleys with the same groove number, the slings are provided with a plurality of slings, the slings are arranged at intervals front and back, and the slings are sequentially wound on the third pulley, the first pulley and the second pulley.

Preferably, the right side opening part of the derrick is fixedly provided with two guide rails which are arranged at intervals in the front-back direction and are arranged opposite to each other, the crown block is positioned between the two guide rails, the front side and the rear side of the crown block are fixedly provided with sliding frames, and the sliding frames are arranged in the guide rails in a sliding manner.

The lifting device has the advantages that (1) the winch and the driving device in the lifting system are arranged at the bottom of the derrick, so that the weight of the top end of the derrick can be reduced, the gravity center of the derrick is lowered, the overall stability of the derrick is improved, the risk of tilting or even overturning of the derrick is reduced, and the lifting cable can bypass the first pulley upwards and be connected with the crown block downwards through the first pulley arranged at the top of the derrick, so that the crown block can be lifted.

(2) Through setting up the second pulley in the overhead traveling crane, form the movable pulley structure jointly between second pulley and the hoist cable for be located the hoist cable that second pulley right side is connected with the fixed plate and be located the left hoist cable of second pulley and can bear the total load of second pulley, overhead traveling crane jointly, thereby reduce the pulling force that the hoist bore the hoist cable, show reduction winch power demand and hoist cable wearing and tearing

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a front view of the overall structure of FIG. 1 of the present utility model;

Fig. 3 is a schematic view of the structure of the top of the derrick of fig. 1 according to the present utility model.

The lifting device comprises a derrick 1, a crown block 2, a lifting system 3, a plate seat 301, a winch 302, a 303, a sling 304, a first pulley, a 4, a second pulley, a 5, a fixed plate 6, a frame 7, a third pulley, a 8, a guide rail 9 and a sliding frame.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without any inventive effort, are intended to be within the scope of the utility model.

Embodiment 1A low gravity center automatic off-line drilling machine, as shown in fig. 1-3, comprises a derrick 1 extending along the up-down direction, wherein the bottom end of the derrick 1 is hinged on a base (not shown in the figure), the base is used for supporting and fixing the derrick 1, a lifting mechanism (not shown in the figure) is arranged on the base, the lifting mechanism is connected with the derrick 1, the lifting mechanism is used for driving the derrick 1 to rotate along the hinged position with the base so as to realize the falling and the erection of the derrick 1, the base and the lifting mechanism belong to the known technology for the person skilled in the art, so that excessive details are not needed, a crown block 2 is arranged on the derrick 1, the right side of the derrick 1 is an opening structure, the crown block 2 is positioned at the right side opening of the derrick 1, a lifting tool (not shown in the figure) is a hydraulic drive automatic lifting tool, a drill rod connector is adapted, and the lifting tool is used for grabbing and releasing a drill rod so as to realize the butt joint of the drill rod.

The lifting system 3 is arranged on the derrick 1 and is in transmission connection with the crown block 2 to drive the derrick to lift, so that butt joint of drilling rods is realized, specifically, a plate seat 301 extending leftwards horizontally is fixedly arranged at the bottom end of the derrick 1, the lifting system 3 comprises a winch 302 fixedly arranged on the plate seat 301, the winch 302 comprises a winding drum, a sling 303 is wound on the winding drum, the sling 303 is a steel wire rope, a driving device is arranged on the plate seat 301, an output shaft of the driving device is in transmission connection with the winding drum of the winch 302 through a coupling, the driving device is a diesel engine, a powerless environment is suitable, a first pulley 304 is arranged at the top end of the derrick 1 through a pulley seat, one end of the sling 303 is fixedly arranged on the winding drum of the winch 302, and the other end of the sling 303 upwards bypasses the top of the first pulley 304 and is downwards connected to the crown block 2.

The winch 302 and the driving device in the lifting system 3 are arranged at the bottom of the derrick 1, so that the weight of the top end of the derrick 1 can be reduced, the gravity center of the derrick 1 is reduced, the overall stability of the derrick 1 is improved, the risk of tilting or even overturning of the derrick is reduced, and the lifting rope 303 can bypass the first pulley 304 upwards and be connected with the crown block 2 downwards through the first pulley 304 arranged at the top of the derrick 1, so that the crown block 2 can be lifted.

The overhead traveling crane 2 rotation is equipped with second pulley 4, the fixed plate 5 that is equipped with right horizontal extension in top of derrick 1, be equipped with hoist cable anchor hole on the fixed plate 5, the other end of hoist cable 303 walks around behind the first pulley 304 downwardly extending, and walk around the bottom of second pulley 4 and upwards anchor in the hoist cable anchor hole of fixed plate 5, form movable pulley structure jointly between second pulley 4 and the hoist cable 303, make the hoist cable 303 that is located second pulley 4 right side and fixed plate 5 and the hoist cable 303 that is located second pulley 4 left side can bear the total load of second pulley 4, overhead traveling crane 2 jointly, thereby reduce the pulling force that hoist 302 bore hoist cable 303, reduce hoist 302 power demand and hoist cable 303 wearing and tearing notably.

The top of derrick 1 is fixed and is equipped with the frame 6 that extends left level, be equipped with the triangle diagonal bar between frame 6 and the left side of derrick 1, in order to support the one end that frame 6 kept away from derrick 1, be equipped with third pulley 7 on the frame 6, third pulley 7 is located the left side of first pulley 304, hoist cable 303 is drawn forth from winch 302 reel back, upwards wind the top of establishing at third pulley 7, then right around establishing at the top of first pulley 304, make third pulley 7 can bear the longitudinal load that comes from crown block 2 to hoist cable 303 jointly with first pulley 304, simultaneously third pulley 7 is located the top left side of derrick 1, can balance the load that comes from derrick 1 right side crown block 2.

The first pulley 304, the second pulley 4 and the third pulley 7 are the multislot pulley that the groove number is the same, hoist cable 303 is equipped with many, interval sets up around many hoist cables, many hoist cables 303 are around establishing in proper order on third pulley 7, first pulley 304 and second pulley 4, can improve the bearing capacity to overhead traveling crane 2 and drilling rod, many hoist cables upwards extend from the reel of winch 302, and walk around the top of third pulley 7 right around the top of first pulley 304, walk around the bottom of second pulley 4 downwards afterwards and upwards anchor in the hoist cable anchor hole of fixed plate 5.

The right side opening part of derrick 1 is fixed and is equipped with two guide rails 8 that the interval set up and the opening set up relatively around, and overhead traveling crane 2 is located between two guide rails 8, and the front and back side of overhead traveling crane 2 is all fixed and is equipped with sliding frame 9, and sliding frame 9 slides and establishes in guide rail 8, and guide rail 8 can be through sliding frame 9 guide overhead traveling crane 2 vertical movement from top to bottom, avoids hoist cable 303 to take place to rock, leads to overhead traveling crane 2 unstable.

The working principle is that the driving device drives the winch 302 to rotate a winding drum, a plurality of slings 303 are wound upwards through the third pulley 7 and the first pulley 304 after being led out from the winch winding drum, then downwards winds around the second pulley 4 in the crown block 2, finally is anchored on the fixed plate 5, the slings drive the crown block 2 to vertically ascend along the guide rail 8 when the winch is wound, and the crown block steadily descends under the control of gravity and slings when the slings are released, so that the grabbing and the lowering of the drill rod are realized.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims

1. The automatic off-line drilling machine with the low gravity center is characterized by comprising a derrick (1) extending along the up-down direction, wherein the bottom end of the derrick (1) is hinged on a base, a lifting mechanism is arranged on the base and connected with the derrick (1), the lifting mechanism is used for driving the derrick (1) to rotate along the hinged position with the base, a crown block (2) is arranged on the derrick (1), the right side of the derrick (1) is of an opening structure, the crown block (2) is positioned at the right side opening of the derrick (1), and a lifting appliance is arranged on the crown block (2) and is used for grabbing and releasing a drill rod;

the lifting system (3) is arranged on the derrick (1), the lifting system is in transmission connection with the crown block (2) to drive the derrick to lift, specifically, a plate seat (301) extending leftwards horizontally is fixedly arranged at the bottom end of the derrick (1), the lifting system (3) comprises a winch (302) fixedly arranged on the plate seat (301), the winch (302) comprises a winding drum, a sling (303) is wound on the winding drum, a driving device is arranged on the plate seat (301), an output shaft of the driving device is in transmission connection with the winding drum of the winch (302) through a coupling, a first pulley (304) is arranged at the top end of the derrick (1) through a pulley seat, one end of the sling (303) is fixedly arranged on the winding drum of the winch (302), and the other end of the sling (303) upwards bypasses the top of the first pulley (304) and is downwards connected to the crown block (2).

2. The automatic off-line drilling machine with low gravity center according to claim 1, wherein the second pulley (4) is rotationally arranged on the crown block (2), a fixing plate (5) extending rightward horizontally is fixedly arranged on the top of the derrick (1), a sling anchoring hole is formed in the fixing plate (5), the other end of the sling (303) bypasses the first pulley (304) to extend downwards and then bypasses the bottom of the second pulley (4) to be anchored in the sling anchoring hole of the fixing plate (5), and a movable pulley structure is formed between the second pulley (4) and the sling (303).

3. The automatic off-line drilling machine with low gravity center according to claim 1, wherein a frame (6) horizontally extending leftwards is fixedly arranged at the top end of the derrick (1), a third pulley (7) is arranged on the frame (6), the third pulley (7) is positioned at the left side of the first pulley (304), and after being led out from a winding drum of the winch (302), a sling (303) is wound on the top of the third pulley (7) upwards and then wound on the top of the first pulley (304) rightwards.

4. The automatic off-line drilling machine with low gravity center according to any one of claims 1 to 3, wherein the first pulley (304), the second pulley (4) and the third pulley (7) are multi-groove pulleys with the same groove number, the slings (303) are provided with a plurality of slings, the slings are arranged at intervals, and the slings (303) are sequentially wound on the third pulley (7), the first pulley (304) and the second pulley (4).

5. The automatic off-line drilling machine with the low gravity center according to claim 1, wherein two guide rails (8) which are arranged at intervals in the front-back direction and are opposite in opening are fixedly arranged at the opening of the right side of the derrick (1), the crown block (2) is located between the two guide rails (8), sliding frames (9) are fixedly arranged on the front side and the rear side of the crown block (2), and the sliding frames (9) are slidably arranged in the guide rails (8).