CN211081719U - Lifting system of drilling derrick - Google Patents
Lifting system of drilling derrick Download PDFInfo
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- CN211081719U CN211081719U CN201921865939.9U CN201921865939U CN211081719U CN 211081719 U CN211081719 U CN 211081719U CN 201921865939 U CN201921865939 U CN 201921865939U CN 211081719 U CN211081719 U CN 211081719U
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- jaw plate
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Abstract
The utility model relates to a hoisting system of a drilling derrick, which comprises a derrick main body, a propeller strut and a winch, wherein a derrick supporting leg at the lower end of the derrick main body is hinged on a wellhead base; the herringbone frame upright post is provided with a self-locking limiting alarm device, which comprises a left clamping plate and a right clamping plate which are clamped at two sides of the herringbone frame upright post, the front side and the rear side of the two clamping plates are respectively connected with each other through a stud, the rear end of the left clamping plate is articulated with a left jaw plate which extends forwards through a left single-head pin, the rear end of the right clamping plate is articulated with a right jaw plate which extends forwards through a right single-head pin, the front ends of the left jaw plate and the right jaw plate are symmetrically provided with barbs which protrude in opposite directions, and the front ends of the two barbs are provided; the rear parts of the left jaw plate and the right jaw plate are respectively provided with a spring shaft, and two ends of a tension spring of the jaw plates are respectively sleeved and fixed on the two spring shafts; when the axes of the left jaw plate and the right jaw plate are parallel to each other, the two spring shafts share the same axis and the opposite ends are abutted against each other. The system can timely unload the power of the winch after the derrick is lifted in place, so that the derrick is prevented from being bent, and the safety is good.
Description
Technical Field
The utility model relates to a well drilling auxiliary assembly, in particular to play to rise system of rig derrick belongs to drilling equipment technical field.
Background
The derrick is mainly composed of a derrick main body, a propeller strut, a crown block platform, a racking platform, a working ladder, a riser platform, a drill floor, a wellhead base and other parts, and is mainly used for placing and hanging hoisting equipment and tools such as the crown block, the propeller strut, the hook, a hoisting ring, a hydraulic-pneumatic tong, a hydraulic tightening device, a hanging tong, a hanging clamp and the like. The derrick bears the load of the derrick itself, as well as the hook load and wind load of the pipe column of the drilling tool, and the vibration load generated when the drilling machine vibrates.
The whole derrick body is composed of three to five sections of welding structures, and the headframes of all the sections are positioned by taper pins and connected by bolts. The derrick is usually moved by horizontal dismounting, integral lifting and sectional transportation. The derrick is lifted and lowered by using the power of the drilling machine and through a winch, a traveling system, a balance pulley, a propeller strut, a back rope, a guide pulley at the lower part of the derrick and the like.
Before the derrick is lifted, a wellhead base and a propeller strut are installed in place, the lower ends of derrick supporting legs are hinged to the wellhead base through a derrick large pin, the hinged points are located on the front side of the bottom of the propeller strut front supporting leg, the derrick main body is gradually erected through a winch through a large rope and a back rope, and the derrick main body and the propeller strut are fixed to each other after the derrick is lifted in place.
Before and after the derrick is lifted to a preset position, an operator needs to carefully control the braking time of the winch, if the braking is too early, the derrick cannot reach the vertical position, and the winch needs to be restarted (or hung) to slowly lift the derrick to the vertical position. However, if the brake is too late, the derrick is easily deformed, the derrick is scrapped if the brake is too late, and casualties and the like are caused if the brake is too strong.
In order to prevent property loss of equipment and the like and personnel industrial accidents caused by too late winch braking, a plurality of technical schemes are generated in the prior art, for example, ⑴ CN 103452485A discloses a derrick dumping prevention device which adopts the mode that a support is arranged on one side of a derrick, a groove is longitudinally formed on one side of the support close to the derrick, and one side of the derrick facing the support is connected with a corresponding connecting piece to prevent the derrick from dumping when being lifted, ⑵ CN 103452486A discloses a derrick supporting device which is additionally provided with supporting devices on two sides of the derrick to enable the weight of the derrick to be borne by a single drilling platform surface to be changed into a drilling platform surface and a left supporting device and a right supporting device to be borne together, so that the stability of the derrick is improved.
The technical scheme does not fundamentally and completely solve the problem of loss of stretch bending of the derrick, equipment, personnel and the like caused by untimely braking of the winch during lifting of the derrick. In actual construction, when the derrick is lifted, misoperation is caused due to misjudgment of workers, and after the derrick is lifted in place, the power of a winch is not timely unloaded and the winch is braked, so that the derrick is continuously dragged by the winch after being lifted to the extreme position of a limit block of the propeller strut, the collapse accident of the derrick is caused, great economic loss is caused, and poor negative effects are caused on the image of a drilling company.
The four technical schemes play the roles of reinforcement, limitation and automatic butt joint fixation through devices such as a support frame, a buffer cylinder, a hydraulic cylinder and the like, belong to passive modes, and do not fundamentally prevent the work of a winch, and if the derrick is lifted in place, the operation attention of personnel is not concentrated or even the operation is wrong, the working of the winch is not stopped in time, and the problems of bending the derrick and the like still occur. According to the fifth technical scheme, after the derrick is lifted in place, the winch is prevented from continuously working through the electromagnetic valve and the relay, and the problems that the derrick is bent by a large rope and the like can be solved. However, electromagnetic equipment is high in cost, easy to damage, high in failure rate, short in service life and the like, so that the working stability is poor, and a plurality of risks still exist.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome the problem that exists among the prior art, provide a lifting system of rig derrick, play to rise when the derrick and put in place the back, can in time unload winch power, avoid the stretch bending derrick or cause the derrick accident of collapsing, even the operative employee goes wrong, also can ensure to play to rise the safety of derrick.
In order to solve the technical problem, the utility model discloses a hoisting system of a drilling rig derrick, including derrick main part, propeller strut and winch, the propeller strut includes the propeller strut stand that extends along vertical direction, the lower extreme of derrick main part is equipped with inverted triangle-shaped's derrick landing leg, the lower extreme of derrick landing leg is articulated on the well head base through the derrick big pin; the herringbone frame upright post is provided with a self-locking limiting alarm device, the self-locking limiting alarm device comprises a left clamping plate and a right clamping plate which are clamped at the left side and the right side of the herringbone frame upright post and extend along the front-back direction, the rear sides of the two clamping plates are connected with each other through a clamping plate rear stud, and the front sides of the two clamping plates are connected with each other through a clamping plate front stud; the rear end of the left splint is hinged with a left jaw plate extending forwards through a left single-head pin, the rear end of the right splint is hinged with a right jaw plate extending forwards through a right single-head pin, barbs protruding in opposite directions are symmetrically arranged at the front ends of the left jaw plate and the right jaw plate, and the front ends of the two barbs are provided with horn mouths which are wide in front and narrow in back; spring shafts are respectively arranged at the rear parts of the left jaw plate and the right jaw plate, and two ends of a jaw plate tension spring are respectively sleeved and fixed on the two spring shafts; when the axes of the left jaw plate and the right jaw plate are parallel to each other, the two spring shafts share the same axis and the opposite ends are abutted against each other.
Compared with the prior art, the utility model discloses following beneficial effect has been obtained: after the derrick body rotates anticlockwise around a derrick big pin at the lower end of a derrick supporting leg and is gradually erected upwards, the inclined edge of the derrick supporting leg reaches the front side of the front supporting leg of the propeller strut, and the derrick rear upright post reaches the front side of the propeller strut and enters the self-locking limiting alarm device. The left clamping plate is fixedly connected with the rear end of the right clamping plate through the clamping plate rear stud, the left clamping plate is fixedly connected with the front end of the right clamping plate through the clamping plate front stud, and the left clamping plate and the right clamping plate can be arranged on the standing column of the propeller strut in a holding mode. The front ends of the left jaw plate and the right jaw plate keep a trend of being close to each other due to the tension of the jaw plate tension spring, when the upright post of the derrick enters a horn mouth at the front ends of the left jaw plate and the right jaw plate backwards, the front ends of the left jaw plate and the right jaw plate are outwards spread in a splayed mode, after the upright post of the derrick continuously crosses the barb backwards and completely enters a locking space between the left jaw plate and the right jaw plate, under the tension effect of the jaw plate tension spring, the front ends of the left jaw plate and the right jaw plate are closed, namely, a state that the axes of the left jaw plate and the right jaw plate are parallel to each other is restored, and at the moment, opposite ends of the two spring shafts abut against each other to enable the left jaw plate and the right jaw plate to. The barb at the front end of the left jaw plate and the right jaw plate can prevent the back upright post of the derrick from inclining forwards, so that even if the brake crank operator takes off the power of the winch in advance for stabilizing the derrick or for misjudgment, the winch does not wind a large rope to drive the derrick to continuously lift, the derrick cannot incline forwards or shake greatly due to self weight, and the first protection for lifting the derrick is formed on the mechanical structure. Therefore, the self-locking limiting alarm device can remove the power of the winch in time, and the derrick cannot topple forwards or greatly shake due to self weight. The influence caused by human misoperation is eliminated, the stability and the reliability of lifting operation are improved, accidents such as bending and even scrapping of the derrick caused by untimely braking of the winch are eliminated, and the economic loss is avoided.
As the utility model discloses an improvement, the rear portion of left splint and right splint has a plurality of pairs of splint fixed orificess along splint length direction evenly distributed, the double-screw bolt passes the rear side fixed connection of a pair of splint fixed orifices with two splint behind the splint. Different clamping plate fixing holes are selected according to the width of the herringbone frame upright post in the front-back direction for the clamping plate rear stud to pass through.
As a further improvement of the utility model, the middle section of the right jaw plate is provided with a plurality of right jaw plate fixing holes which are communicated along the vertical direction, one of the right jaw plate fixing holes is provided with a right positioning rod, the right positioning rod is provided with a first stroke limiting valve, and a switching contact handle of the first stroke limiting valve extends out leftwards; when the axis of the derrick body is perpendicular to the ground, the rear edge of the derrick rear upright post triggers a switching contact handle of the first stroke limit valve. When the axis of the derrick body is vertical to the ground, a winch operator should brake the winch in time; if the attention of the operator of the brake crank is not concentrated enough or the experience is insufficient, the winch is not braked in time, the winch still rotates, the traveling block continues to move upwards, and the derrick body continues to move towards the propeller strut. This patent has set up stroke limit valve one, triggers stroke limit valve one at the state point that the derrick main part targets in place, cuts off the air feed of control winch, and the brake disc brakes simultaneously about the winch to the loudspeaker of ventilating reports to the police, reminds the derrick main part to rise to target in place, and the winch can in time be stopped to winch operating personnel, neither in advance, lag again, forms the second that rises to rise to say and protects. After the air horn gives an alarm, if the axis of the derrick main body still crosses the vertical position, an operator can control the buffer hydraulic cylinder to extend a piston rod of the buffer hydraulic cylinder, slowly push the derrick main body to return to the vertical position, remove the alarm of the air horn, and insert a connecting lock pin to fixedly connect the derrick main body with the propeller strut. The middle section of the right jaw plate is provided with a plurality of right jaw plate fixing holes, so that the installation position of the first stroke limiting valve can be conveniently adjusted, and the position for sending a winch brake signal is accurate and timely.
As a further improvement of the utility model, the rear part of the left jaw plate is provided with a plurality of left jaw plate fixing holes which are communicated along the left-right direction, one of the left jaw plate fixing holes is provided with a left positioning rod, the left positioning rod is provided with a stroke limiting valve II, and a switching contact handle of the stroke limiting valve II extends rightwards or forwards; the second stroke limiting valve is located between the spring shaft and the first stroke limiting valve in the front-back direction. If the derrick body crosses the upright position due to the error of an operator or the failure of the first stroke limiting valve, the traveling block is still going upwards due to the fact that the winch is not removed, the derrick body still continuously tilts backwards, when the switching contact handle of the second stroke limiting valve is triggered by the rear upright post of the derrick, the pneumatic control valve group for cutting off and controlling the pneumatic tire of the diesel engine linkage box cuts off the air source from the diesel engine linkage box, air is not supplied to the pneumatic tire of the input shaft of the linkage box, and therefore the winch loses power and stops rotating, and a third protection for lifting is formed. Then the operator controls the buffer hydraulic cylinder to extend a piston rod of the buffer hydraulic cylinder, slowly pushes the derrick body to return to the vertical position, and inserts the connecting lock pin to fixedly connect the derrick body with the propeller strut.
As an improvement of the utility model, the top of the derrick body is provided with a crown block wheel set, and the rear side of the crown block wheel set is provided with a crown block guide wheel; a traveling block is arranged in the derrick main body, a traveling block wheel group is arranged on the traveling block, and a traveling block hook is arranged below the traveling block wheel group; the top of the rear side of the drilling platform is provided with a drilling platform guide wheel, and the winch is fixed on the ground at the rear side of the wellhead base; the axes of the crown block wheel set and the traveling block wheel set are parallel to each other and are vertical to the axes of the crown block guide wheel and the drilling platform guide wheel; the large rope led out from the winch roller sequentially bypasses a drilling platform guide wheel and a crown block guide wheel, and then repeatedly bypasses between a crown block wheel set and a traveling crown block wheel set, and is downwards fixed on a large rope fixer after being wound out from a last crown block wheel of the crown block wheel set, and the large rope fixer is fixed at the lower part of the front side of the derrick body. The crown block wheel set is a fixed pulley block, and the traveling block wheel set is a movable pulley block; after the big rope turned around the overhead traveling crane leading wheel, downwards wrapped around the first pulley of the round trip block group, then upwards wrapped around the first pulley of the round trip block group again, downwards wrapped around the second pulley of the round trip block group again, upwards wrapped around the second pulley of the round trip block group again, so reciprocal. The winch roller winds the large rope, after the large rope is steered through the drilling platform guide wheel, the crown block guide wheel and the crown block wheel set, the traveling block wheel set drives the traveling block hook to ascend, and the traveling block hook erects the derrick main body through the lifting back rope.
As a further improvement of the utility model, the lower part of the derrick body is provided with a derrick guide wheel I and a derrick guide wheel II, a derrick steering wheel is arranged below the derrick guide wheel II, and the top of the A-bracket upright post is provided with a A-bracket pulley; the axes of the first derrick guide wheel, the second derrick guide wheel and the traveling block set are parallel to each other and are vertical to the axes of the derrick steering wheel and the propeller strut pulley; the back rope is led out downwards from the traveling block hook, sequentially bypasses a derrick guide wheel I and a derrick guide wheel II, is turned by the derrick turning wheel and the propeller strut pulley, and is upwards fixed on the back rope fixing lug which is fixed in the middle of the rear side of the derrick main body. The back rope is wrapped downwards from the left side of the first derrick guide wheel, and is wrapped downwards from the right side of the second derrick guide wheel to form an S-shaped wrapping, so that the back rope entering the position of the derrick steering wheel is prevented from shaking, then the back rope is wrapped downwards from the front side of the derrick steering wheel, and finally is turned by the herringbone frame pulley and then is fixed upwards on the back rope fixing lug. When the big rope pulls the traveling block hook to rise, the traveling block hook lifts the movable end of the back rope upwards, and the back rope bypassing the propeller strut pulley slowly pulls up the derrick main body through the back rope fixing lug.
As the utility model discloses a further improvement, the lower part front side of propeller strut stand is equipped with the propeller strut hinge lug, the upper end rear side of derrick landing leg is equipped with the derrick hinge lug, erects the back that targets in place when the derrick main part, connects the lockpin and inserts derrick hinge lug and derrick hinge lug's pinhole in with derrick main part and propeller strut fixed connection. After the derrick main body is fixedly connected with the propeller strut by the connecting lock pin, the hoisting work of the derrick main body is finished, and the next procedure can be carried out.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description, which are provided for reference and illustration purposes only and are not intended to limit the invention.
Fig. 1 is a state diagram of the lifting system of the derrick of the drilling machine after the lifting system is lifted in place.
Fig. 2 is the state diagram before the hoisting system of the derrick of the drilling machine of the utility model is hoisted.
FIG. 3 is an enlarged view of the herringbone frame.
Fig. 4 is a working state diagram of a first embodiment of the self-locking limit alarm device.
Fig. 5 is a working state diagram of the second embodiment of the self-locking limit alarm device.
Fig. 6 is an elevation view of the self-locking limit alarm device entering a locked state.
In the figure: 1. a derrick body; 1a, a derrick leg bevel; 1b, a derrick rear upright post; 1c, a big rope fixer; 1d, fixing lugs by using a back rope; 1e, a derrick hinge lug; 1f, a derrick big pin; 2. a herringbone frame; a-frame upright post; 2b, front supporting legs of the propeller strut; 2c, rear support legs of the propeller strut; 2d, a propeller strut; a propeller strut hinge lug; 2f, connecting the lock pin; 3. a drilling platform; 4. a traveling block hook; 5. a big rope; 6. a back cord; 7. a buffer liquid cylinder; 8. a self-locking limit alarm device; 8a, a left splint; 8a1. left splint fixing hole; 8b, a right splint; 8b1. a right splint fixing hole; 8c, clamping a rear stud; 8d, clamping plate front stud; 8e, a left single-headed pin; 8f, a right single-headed pin; 8g, left jaw plate; 8g1. left jaw plate fixing hole; 8g2. left positioning bar; 8h, a right jaw plate; 8h1. right jaw plate fixing hole; 8j, barb; 8k. a spring shaft; 8m. jaw plate tension spring; 9. a winch; BP, gas horn; C1. a drilling platform guide wheel; C2. a crown block guide wheel; C3. a crown block wheel set; C4. a traveling wheel set; D1. a first derrick guide wheel; D2. a second derrick guide wheel; D3. a derrick steering wheel; D4. a propeller strut pulley; SV1, a first stroke limiting valve; and SV2, a second stroke limit valve.
Detailed Description
In the following description of the present invention, the terms "front", "rear", "left", "right", "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship after the derrick is erected, and are only for convenience of description and simplification of description, and do not mean that the device must have a specific orientation.
As shown in fig. 1 to 6, the hoisting system of drilling derrick of the utility model comprises a derrick body 1, a propeller strut 2 and a winch 9, wherein the propeller strut 2 comprises a propeller strut upright 2a extending along the vertical direction, the bottom of the propeller strut upright 2a is provided with a propeller strut front leg 2b and a propeller strut rear leg 2c which are symmetrically extended forwards and backwards, and the bottoms of the propeller strut front leg 2b and the propeller strut rear leg 2c are fixed on a well head base; a propeller strut stiffener 2d is connected between the lower end of the propeller strut rear leg 2c and the upper end of the propeller strut upright post 2a. The lower end of the derrick body 1 is provided with an inverted triangular derrick supporting leg, the rear side of the derrick supporting leg is a derrick supporting leg bevel edge 1a, and the inclination angle of the derrick supporting leg bevel edge 1a is consistent with that of a propeller strut front supporting leg 2 b; the lower ends of the derrick support legs are hinged on a wellhead base through a derrick big pin 1f, and the hinged point is positioned on the front side of the bottom of the propeller strut front support leg 2 b; a self-locking limit alarm device 8 is arranged on the A-bracket upright post 2a.
After the derrick body 1 rotates anticlockwise around a derrick big pin 1f at the lower end of a derrick supporting leg and is gradually erected upwards, the inclined edge 1a of the derrick supporting leg reaches the front side of a propeller strut front supporting leg 2b, a derrick rear upright post 1b reaches the front side of the propeller strut upright post 2a and enters a self-locking limiting alarm device 8, the self-locking limiting alarm device 8 can remove power of a winch 9 in time, and the derrick cannot topple forwards or shake greatly due to self weight. The influence caused by human misoperation is eliminated, the stability and the reliability of lifting operation are improved, accidents such as bending and even scrapping of the derrick caused by untimely braking of the winch 9 are eliminated, and the economic loss is avoided.
The top of the derrick body 1 is provided with a crown block wheel set C3, and the rear side of the crown block wheel set C3 is provided with a crown block guide wheel C2; a traveling block is arranged in the derrick main body 1, the traveling block is provided with a traveling block wheel set C4, and a traveling block hook 4 is arranged below the traveling block wheel set C4; a drilling platform guide wheel C1 is installed at the top of the rear side of the drilling platform 3, and the winch 9 is fixed on the ground at the rear side of the wellhead base; the axes of the crown block wheel set C3 and the crown block wheel set C4 are parallel to each other and are vertical to the axes of the crown block guide wheel C2 and the drilling platform guide wheel C1; the rope 5 led out from the winch drum sequentially bypasses a drilling platform guide wheel C1 and a crown block guide wheel C2, then repeatedly bypasses between a crown block wheel set C3 and a traveling crown block wheel set C4, and is downwards fixed on a rope fixer 1C after being wound out from a last crown block wheel of the crown block wheel set C3, and the rope fixer 1C is fixed at the lower part of the front side of the derrick body 1.
The crown block wheel set C3 is a fixed pulley block, and the traveling block wheel set C4 is a movable pulley block; after the big rope 5 is turned by the crown block guide wheel C2, the first pulley of the traveling crown block wheel set C4 is wrapped downwards, then the first pulley of the crown block wheel set C3 is wrapped upwards, the second pulley of the traveling crown block wheel set C4 is wrapped downwards, the second pulley of the crown block wheel set C3 is wrapped upwards, and the operation is repeated in this way. The winch roller winds the large rope 5, and after the large rope is steered by the drilling platform guide wheel C1, the crown block guide wheel C2 and the crown block wheel group C3, the traveling block wheel group C4 drives the traveling block hook 4 to ascend, and the traveling block hook 4 erects the derrick body 1 through the lifting back rope 6.
A derrick guide wheel I D1 and a derrick guide wheel II D2 are arranged at the lower part of the derrick main body 1, a derrick steering wheel D3 is arranged below the derrick guide wheel II D2, and a herringbone frame pulley D4 is arranged at the top of the herringbone frame upright post 2 a; the axes of the derrick guide wheel I D1, the derrick guide wheel II D2 and the free wheel group C4 are parallel to each other and are vertical to the axes of a derrick steering wheel D3 and a trestle pulley D4; the back rope 6 is led out downwards from the traveling block hook 4, sequentially bypasses a derrick guide wheel I D1 and a derrick guide wheel II D2, is turned by a derrick turning wheel D3 and a propeller strut pulley D4, and is upwards fixed on the back rope fixing lug 1D, and the back rope fixing lug 1D is fixed in the middle of the rear side of the derrick body 1.
The back rope 6 is wrapped downwards from the left side of the first derrick guide wheel D1 and wrapped downwards from the right side of the second derrick guide wheel D2 to form an S-shaped wrapping, so that the back rope 6 entering the position of the derrick steering wheel D3 is ensured not to shake, and then the back rope 6 is wrapped downwards from the front side to the derrick steering wheel D3 and finally is turned to the direction through the herringbone frame pulley D4 and then is fixed on the back rope fixing lug 1D upwards. When the large rope 5 pulls the traveling block hook 4 to ascend, the traveling block hook 4 lifts the movable end of the back rope 6 upward, and the back rope 6 passing around the propeller strut pulley D4 slowly pulls up the derrick body 1 through the back rope fixing lug 1D.
A herringbone frame hinged lug 2e is arranged on the front side of the lower portion of the herringbone frame upright post 2a, a derrick hinged lug 1e is arranged on the rear side of the upper end of a derrick supporting leg, and after the derrick main body 1 is erected in place, a connecting lock pin 2f is inserted into pin holes of the herringbone frame hinged lug 2e and the derrick hinged lug 1e to fixedly connect the derrick main body 1 with the herringbone frame. After the derrick main body 1 is fixedly connected with the propeller strut by the connecting lock pin 2f, the lifting work of the derrick main body 1 is finished, and the next procedure can be carried out.
The self-locking limiting alarm device 8 comprises a left clamping plate 8a and a right clamping plate 8b which are clamped at the left side and the right side of the A-bracket upright post 2a and extend along the front-back direction, the rear sides of the two clamping plates are connected with each other through a clamping plate rear stud 8c, and the front sides of the two clamping plates are connected with each other through a clamping plate front stud 8 d; the rear end of the left splint 8a is hinged with a left jaw plate 8g extending forwards through a left single-head pin 8e, the rear end of the right splint 8b is hinged with a right jaw plate 8h extending forwards through a right single-head pin 8f, barbs 8j protruding in opposite directions are symmetrically arranged at the front ends of the left jaw plate 8g and the right jaw plate 8h, and the front ends of the two barbs 8j are provided with horn mouths which are wide in front and narrow in back; spring shafts 8k are respectively arranged at the rear parts of the left jaw plate 8g and the right jaw plate 8h, and two ends of a jaw plate tension spring 8m are respectively sleeved and fixed on the two spring shafts 8 k; when the axes of the left jaw plate 8g and the right jaw plate 8h are parallel to each other, the two spring shafts 8k are coaxial and the opposite ends abut against each other.
The left clamping plate 8a is fixedly connected with the rear end of the right clamping plate 8b through the clamping plate rear stud 8c, the left clamping plate 8a is fixedly connected with the front end of the right clamping plate 8b through the clamping plate front stud 8d, and the left clamping plate 8a and the right clamping plate 8b can be arranged on the A-frame upright post 2a in a embracing mode. The front ends of the left jaw plate 8g and the right jaw plate 8h are kept to be close to each other by the tension of the jaw plate tension spring 8m, when the post 1b behind the derrick enters the horn mouth at the front ends of the left jaw plate 8g and the right jaw plate 8h backwards, the front ends of the left jaw plate 8g and the right jaw plate 8h are unfolded outwards in a splayed shape, after the post 1b behind the derrick continuously crosses the barb 8j backwards and completely enters the locking space between the left jaw plate 8g and the right jaw plate 8h, under the tension of the jaw plate tension spring 8m, the front ends of the left jaw plate 8g and the right jaw plate 8h are closed, namely, the state that the axes of the left jaw plate 8g and the right jaw plate 8h are parallel to each other is restored, and at the moment, the opposite ends of the two spring shafts 8k abut against each other to enable the left jaw plate 8g and the right jaw plate 8h to be positioned. The barb 8j at the front end of the left jaw plate 8g and the right jaw plate 8h can prevent the derrick rear upright post 1b from inclining forward, and even if a brake crank operator takes off the power of the winch 9 in advance for stabilizing the derrick or for misjudgment, the winch 9 does not wind the large rope 5 to drive the derrick to continue to lift, the derrick cannot incline forward or shake greatly due to self weight, and the first protection of derrick lifting is formed from a mechanical structure.
The upper part and the lower part of the A-frame upright post 2a are respectively provided with a buffer hydraulic cylinder 7, and a piston rod of each buffer hydraulic cylinder 7 extends forwards; when the derrick rear upright post 1b passes over the barb 8j of the left jaw plate 8g and the right jaw plate 8h, the gravity center of the derrick main body 1 is positioned between the derrick big pin 1f and the axis of the propeller strut upright post 2a, and the piston rod of each buffer cylinder 7 is positioned at the front dead center and abuts against the rear end surface of the derrick rear upright post 1b. After the derrick rear upright post 1b passes through the barb 8j of the left jaw plate 8g and the right jaw plate 8h, the derrick rear upright post enters a locking space of the self-locking limiting alarm device 8, and the barb 8j can prevent the derrick main body 1 from inclining forwards. Because the gravity center of the derrick body 1 is positioned at the rear side of the derrick big pin 1f, the derrick body 1 can tilt backwards under the action of gravity, at the moment, the winch 9 can rotate at a low speed to slowly lift the traveling block big hook 4, the piston rods of the buffer liquid cylinders 7 slowly retract until the pin holes of the propeller strut hinge lug 2e and the derrick hinge lug 1e are coaxial, and the derrick body 1 is fixedly connected with the propeller strut by inserting the connecting lock pin 2f.
The middle section of the right jaw plate 8h is provided with a plurality of right jaw plate fixing holes 8h1 which are penetrated in the vertical direction, a right positioning rod is arranged in one right jaw plate fixing hole 8h1, a stroke limit valve SV1 is arranged on the right positioning rod, and a switching contact handle of the stroke limit valve SV1 extends out leftwards; when the axis of the derrick body 1 is perpendicular to the ground, the rear edge of the derrick rear pillar 1b triggers the switching feeler of a stroke limit valve SV1.
When the axis of the derrick body 1 is perpendicular to the ground, the winch operator should brake the winch 9 in time; if the attention of the brake crank operator is not concentrated enough or the experience is insufficient, the winch 9 is not braked in time, the winch 9 is still rotated, the traveling block continues to move upwards, and the derrick body 1 continues to move towards the propeller strut. This patent has set up stroke limiting valve SV1, triggers stroke limiting valve SV1 at the state point that derrick main part 1 targets in place, cuts off the air feed of control winch 9, and the brake disc brakes simultaneously about winch 9 to the horn of ventilating reports to the police, reminds derrick main part 1 to rise to target in place, and winch operating personnel can in time accurately brake winch 9, neither in advance, lag again, form the second protection that rises to rise. After the air horn gives an alarm, if the axis of the derrick body 1 still crosses the vertical position, an operator can control the buffer hydraulic cylinder 7 to extend a piston rod of the buffer hydraulic cylinder 7, slowly push the derrick body 1 to return to the vertical position, remove the alarm of the air horn, and insert the connecting lock pin 2f to fixedly connect the derrick body 1 and the propeller strut. The middle section of the right jaw plate 8h is provided with a plurality of right jaw plate fixing holes 8h1, so that the installation position of a stroke limit valve SV1 can be conveniently adjusted, and the position of sending a winch brake signal is accurate and timely.
The rear part of the left jaw plate 8g is provided with a plurality of left jaw plate fixing holes 8g1 which are penetrated in the left-right direction, one left jaw plate fixing hole 8g1 is internally provided with a left positioning rod 8g2, the left positioning rod 8g2 is provided with a stroke limiting valve II SV2, and a switching contact handle of the stroke limiting valve II SV2 extends rightwards or forwards; the second stroke limiting valve SV2 is located between the spring shaft 8k and the first stroke limiting valve SV1 in the front-rear direction. If the derrick body 1 passes through the upright position due to the error of an operator or the failure of the first stroke limiting valve SV1, the traveling block is still going upwards due to the fact that the winch 9 is not removed, the derrick body 1 still tilts backwards continuously, when the derrick rear upright post 1b triggers the switching contact handle of the second stroke limiting valve SV2, the pneumatic control valve group for controlling the pneumatic tire of the diesel engine linkage box is cut off, an air source is cut off from the diesel engine linkage box, air is not supplied to the pneumatic tire of the input shaft of the linkage box, and therefore the winch 9 loses power and stops rotating, and the third protection for lifting is formed. Then the operator controls the buffer hydraulic cylinder 7 to extend the piston rod of the buffer hydraulic cylinder 7, slowly pushes the derrick body 1 to return to the upright position, and inserts the connecting lock pin 2f to fixedly connect the derrick body 1 with the propeller strut.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention. In addition to the above embodiments, the present invention may have other embodiments. All the technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope claimed by the present invention. The undescribed technical features of the present invention can be realized by or using the prior art, and are not described herein again.
Claims (7)
1. A lifting system of a drilling derrick comprises a derrick main body, a propeller strut and a winch, and is characterized in that: the herringbone frame comprises a herringbone frame upright post extending in the vertical direction, the lower end of the derrick body is provided with an inverted triangular derrick supporting leg, and the lower end of the derrick supporting leg is hinged on a wellhead base through a derrick large pin; the herringbone frame upright post is provided with a self-locking limiting alarm device, the self-locking limiting alarm device comprises a left clamping plate and a right clamping plate which are clamped at the left side and the right side of the herringbone frame upright post and extend along the front-back direction, the rear sides of the two clamping plates are connected with each other through a clamping plate rear stud, and the front sides of the two clamping plates are connected with each other through a clamping plate front stud; the rear end of the left splint is hinged with a left jaw plate extending forwards through a left single-head pin, the rear end of the right splint is hinged with a right jaw plate extending forwards through a right single-head pin, barbs protruding in opposite directions are symmetrically arranged at the front ends of the left jaw plate and the right jaw plate, and the front ends of the two barbs are provided with horn mouths which are wide in front and narrow in back; spring shafts are respectively arranged at the rear parts of the left jaw plate and the right jaw plate, and two ends of a jaw plate tension spring are respectively sleeved and fixed on the two spring shafts; when the axes of the left jaw plate and the right jaw plate are parallel to each other, the two spring shafts share the same axis and the opposite ends are abutted against each other.
2. A hoisting system of a drilling rig mast as claimed in claim 1, wherein: the rear portions of the left clamping plate and the right clamping plate are evenly distributed with a plurality of pairs of clamping plate fixing holes along the length direction of the clamping plates, and the studs behind the clamping plates penetrate through the clamping plate fixing holes to fixedly connect the rear sides of the two clamping plates.
3. A hoisting system of a drilling rig mast as claimed in claim 1, wherein: the middle section of the right jaw plate is provided with a plurality of right jaw plate fixing holes which are communicated along the vertical direction, a right positioning rod is arranged in one right jaw plate fixing hole, a first stroke limiting valve is arranged on the right positioning rod, and a switching contact handle of the first stroke limiting valve extends out leftwards; when the axis of the derrick body is perpendicular to the ground, the rear edge of the derrick rear upright post triggers a switching contact handle of the first stroke limit valve.
4. A hoisting system of a drilling rig mast as claimed in claim 3, wherein: the rear part of the left jaw plate is provided with a plurality of left jaw plate fixing holes which are communicated along the left-right direction, a left positioning rod is arranged in one left jaw plate fixing hole, a stroke limiting valve II is arranged on the left positioning rod, and a switching contact handle of the stroke limiting valve II extends rightwards or forwards; the second stroke limiting valve is located between the spring shaft and the first stroke limiting valve in the front-back direction.
5. A hoisting system of a drilling rig mast as claimed in any one of claims 1 to 4, wherein: the top of the derrick body is provided with a crown block wheel set, and the rear side of the crown block wheel set is provided with a crown block guide wheel; a traveling block is arranged in the derrick main body, a traveling block wheel group is arranged on the traveling block, and a traveling block hook is arranged below the traveling block wheel group; the top of the rear side of the drilling platform is provided with a drilling platform guide wheel, and the winch is fixed on the ground at the rear side of the wellhead base; the axes of the crown block wheel set and the traveling block wheel set are parallel to each other and are vertical to the axes of the crown block guide wheel and the drilling platform guide wheel; the large rope led out from the winch roller sequentially bypasses a drilling platform guide wheel and a crown block guide wheel, and then repeatedly bypasses between a crown block wheel set and a traveling crown block wheel set, and is downwards fixed on a large rope fixer after being wound out from a last crown block wheel of the crown block wheel set, and the large rope fixer is fixed at the lower part of the front side of the derrick body.
6. A hoisting system of a drilling rig mast as claimed in claim 5, wherein: a derrick guide wheel I and a derrick guide wheel II are arranged at the lower part of the derrick main body, a derrick steering wheel is arranged below the derrick guide wheel II, and a herringbone frame pulley is arranged at the top of the herringbone frame upright post; the axes of the first derrick guide wheel, the second derrick guide wheel and the traveling block set are parallel to each other and are vertical to the axes of the derrick steering wheel and the propeller strut pulley; the back rope is led out downwards from the traveling block hook, sequentially bypasses a derrick guide wheel I and a derrick guide wheel II, is turned by the derrick turning wheel and the propeller strut pulley, and is upwards fixed on the back rope fixing lug which is fixed in the middle of the rear side of the derrick main body.
7. A hoisting system of a drilling rig mast as claimed in any one of claims 1 to 4, wherein: a herringbone frame hinge lug is arranged on the front side of the lower portion of the herringbone frame stand column, a derrick hinge lug is arranged on the rear side of the upper end of the derrick support leg, and after the derrick main body is erected in place, a connecting lock pin is inserted into pin holes of the herringbone frame hinge lug and the derrick hinge lug to fixedly connect the derrick main body and the herringbone frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921865939.9U CN211081719U (en) | 2019-11-01 | 2019-11-01 | Lifting system of drilling derrick |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921865939.9U CN211081719U (en) | 2019-11-01 | 2019-11-01 | Lifting system of drilling derrick |
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| CN211081719U true CN211081719U (en) | 2020-07-24 |
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| CN201921865939.9U Active CN211081719U (en) | 2019-11-01 | 2019-11-01 | Lifting system of drilling derrick |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110790165A (en) * | 2019-11-01 | 2020-02-14 | 中石化华东石油工程有限公司 | Safe hoisting operation method for drilling derrick |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110790165A (en) * | 2019-11-01 | 2020-02-14 | 中石化华东石油工程有限公司 | Safe hoisting operation method for drilling derrick |
| CN110790165B (en) * | 2019-11-01 | 2021-03-16 | 中石化华东石油工程有限公司 | Safe hoisting operation method for drilling derrick |
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