CN105114015B - Lifting type hydraulic power catwalk system - Google Patents

Abstract

The patent of the invention belongs to the technical field of petroleum machinery, specifically a lifting hydraulic power catwalk system designed to realize the automatic movement of drilling tools between the drilling tool frame and the drilling floor. The lifting hydraulic power catwalk system is mainly composed of five mechanisms, namely, the drilling tool rack turning out mechanism, the turning arm mechanism, the turning plate mechanism, the lifting mechanism and the pulley mechanism. The drilling tool frame pull-out mechanism realizes the movement of the drilling tool between the drilling tool frame and the main body of the catwalk through the lifting of the hydraulic cylinder. The turning arm mechanism moves the drilling tool from the turning arm to the conveying arm or back. The turnover mechanism cooperates with the turnover arm mechanism to move a single drilling tool from the turnover arm to the delivery arm or back. The lifting mechanism lifts the conveying arm that transports the drilling tool to a certain height. The pulley mechanism pushes the drilling tool out a certain distance along the conveying arm. The invention has the advantages of high degree of automation, strong applicability, good stability, simple structure, stability and reliability, and is especially suitable for the operation of small and medium-sized drilling and repairing machines with a relatively low drill floor height.

Description

Lifting hydraulic power catwalk system

technical field

The patent of the invention belongs to the technical field of petroleum machinery, specifically a lifting hydraulic power catwalk system designed to realize the automatic movement of drilling tools between the drilling tool frame and the drilling floor.

Background technique

The traditional drilling tool operation method mainly relies on manpower. This operation method has disadvantages such as poor safety, high labor intensity, and low work efficiency, which greatly limits the development of automatic drilling systems. In order to change the traditional operation mode of drilling tools, since the 1940s, the research and production application of hydraulic power catwalk technology have been carried out abroad. Domestic research on hydraulic power catwalk technology started relatively late. After development in recent years, hydraulic power catwalk systems supporting some drilling rigs have appeared in China. However, the current power catwalk system mainly has the following deficiencies: the type and quantity of small and medium-sized oil drilling rigs with low drilling floor heights such as vehicle-mounted drilling rigs and hydraulic drilling rigs are relatively small; the applicable drilling floor height is relatively fixed, and the adjustment range is limited; In the process of moving the drilling tools from the drill rack to the main body of the catwalk, human power is still required, and no complete automation has been realized; most of the hoisting methods are wire rope traction, and the flexible hoisting method of the wire rope has low transmission accuracy. Shaking will occur during the process and the stability is poor.

Contents of the invention

The present invention aims to overcome the above-mentioned deficiencies in the prior art and equipment. The present invention proposes a lifting hydraulic power catwalk system suitable for medium and low height drill floors, with a relatively large adjustment range and fully automatic realization. The technical scheme adopted as follows:

The hydraulic power catwalk system is mainly composed of five mechanisms, namely, the drill frame turning mechanism, the turning arm mechanism, the turning mechanism, the lifting mechanism and the pulley mechanism.

The function of the drill frame pull-out mechanism is to realize the movement of the drill tool between the drill frame and the main body of the catwalk through the lifting of the hydraulic cylinder. In order to improve the moving capacity, the drill frame and the pull-out mechanism of the drill frame are symmetrically arranged on both sides. In this way, the smaller size drill pipe and drill collar can be transported on one side, and the larger size casing can be transported on the other side. The specific scheme is that one end of the hydraulic cylinder is hinged with a fixed point on the base plate, the other end is hinged with one end of the flap, the other end of the flap is hinged with a support frame, the support frame is fixed on the base plate, and the legs play an auxiliary supporting role.

The function of the turning arm mechanism is to move the drilling tool from the turning arm to the conveying arm or back. Among them, the lifting plate is to prevent the drilling tools coming from the drilling tool rack from directly entering the conveying arm, one end of the outrigger hydraulic cylinder is hinged with the outrigger bottom plate, and the other end is hinged with the baffle plate. When the outrigger hydraulic cylinder is lifted, the baffle can slide in the track, stop sliding after reaching the stopper position, and then drive the turning arm to turn around the hinge point fixed on the base of the catwalk. This allows drilling tools to enter the main body of the catwalk from the drill rack before the outrigger hydraulic cylinders are lifted. When the outrigger hydraulic cylinder is lifted, prevent the drilling tool from continuing to enter the main body of the catwalk.

The function of the turning mechanism is to cooperate with the turning arm mechanism to move a single drilling tool from the turning arm to the delivery arm or back. The specific scheme is that one end of the hydraulic cylinder is hinged with a fixed point on the delivery arm, the other end is hinged with one end of the flap, and the other end of the flap is hinged with a fixed point on the delivery arm. In particular, the side height of the flap is relatively large, which can prevent the drilling tool from rolling down when transporting the drilling tool, and replace the safety pin structure to play a role of safety protection.

The function of the lifting mechanism is to lift the conveying arm that transports the drilling tool to a certain height. The specific scheme is that one end of the lifting hydraulic cylinder is hinged with the fixed point on the base of the catwalk, and the other end is hinged with the middle position of the rotating arm. One end of the rotating arm is hinged with a fixed point on the base of the catwalk, and the other end is hinged with one end of the conveying arm. Two sets of flaps are evenly installed in the middle of the conveying arm. The pulley is installed at the end of the conveying arm and can slide along the conveying arm to push the drilling tool out for a certain distance. Rollers are installed at the end of the conveying arm, and the rollers can roll along the slideway fixed on the base of the catwalk. In particular, the shape of the rotating arm in the lifting mechanism is obtained through optimized design. The sharp corner of the swivel arm is improved to a circular arc segment with the same center as the hinge point. The two straight line segments connected with the arc segment transition tangentially to the arc segment. In the initial state, the long straight section is in contact with the bottom plate on the base of the catwalk; during the lifting process, the arc section is in contact with the bottom plate on the base of the catwalk; in the final state, the short straight section is in contact with the bottom plate on the base of the catwalk touch. In this way, the running stability of the rotating arm can be improved, the control requirements for the lifting hydraulic cylinder can be reduced, and the possibility of instability accidents can also be reduced. In addition, there are different hinge positions on the swivel arm, which can adapt to different drill floor heights.

The function of the pulley mechanism is to push the drilling tool out a certain distance along the conveying arm. The mechanism is mainly powered by a hydraulic motor, which drives the driving sprocket to rotate through a coupling and a reducer. The driving sprocket drives the driven sprocket to rotate through the main chain. The driven sprocket and the auxiliary sprocket rotate coaxially to drive the auxiliary chain and the main chain to move simultaneously, and the legs below the block are fixed to the main chain and the auxiliary chain. Therefore, by controlling the positive and negative rotation and speed of the hydraulic motor, the moving direction and speed of the block can be controlled. In addition, the cover at the end of the delivery arm is used to protect the hydraulic pressure and transmission system in the pulley mechanism to avoid the intrusion of foreign impurities.

The invention has the following advantages: high degree of automation. Through the pull-out mechanism of the drill rack, the fully automatic mechanical operation of the drill tool is realized, which reduces the number of drilling workers, reduces labor intensity, improves operation safety, reduces the occurrence of well site accidents, and reduces labor costs; Applicability powerful. On the one hand, it can be applied to drill pipes, casings and drill collars of different sizes, and on the other hand, it can be applied to drilling and repairing equipment of different drill floor heights. Therefore, the utilization rate of drilling auxiliary equipment can be improved, and the purchase cost of equipment can be effectively reduced; the stability is good. The rigid mechanical structure is used for lifting, and the shape and structure of the rotating arm are optimized at the same time, making the system more stable and reliable; the structure is simple. Using the flip mechanism instead of the safety pin mechanism further simplifies the mechanical structure of the drilling tool, and also simplifies the hydraulic system.

Description of drawings

Figure 1: The overall structure diagram of the lifting hydraulic power catwalk system of the present invention.

Fig. 2: A diagram of the process of moving the drilling tool by the lifting hydraulic power catwalk system of the present invention.

Figure 3: Structural diagram of the trolley mechanism of the lifting hydraulic power catwalk system of the present invention.

1. Roller, 2. Cover, 3. Pulley, 4. Conveying arm, 5. Turning plate, 6. Lifting hydraulic cylinder, 7. Rotating arm, 8. Drilling tool, 9. Support frame, 10. Turning out hydraulic pressure Cylinder, 11. Outrigger hydraulic cylinder, 12. Flip arm, 13. Rail, 14. Catwalk base, 15. Support plate, 16. Drill rack, 17. Bottom plate, 18. Flip out plate, 19. Block , 20. Baffle plate, 21. Flap plate hydraulic cylinder, 22. Chain, 23. Sprocket wheel, 24. Reducer, 25. Hydraulic motor, 26. Lifting plate.

detailed description

Below in conjunction with accompanying drawing and example the present invention will be further described:

As shown in Fig. 1, Fig. 2 and Fig. 3, the lifting type hydraulic power catwalk system of the present invention includes five mechanisms of a drilling tool frame turning out mechanism, a turning arm mechanism, a turning mechanism, a lifting mechanism and a pulley mechanism.

The specific structure of the drill rack pull-out mechanism is that the pull-out hydraulic cylinder 10 is hinged with a fixed point on the bottom plate 17, the other end is hinged with one end of the pull-out plate 18, and the other end of the pull-out plate 18 is hinged with the support frame 9. The support frame 9 is fixed on the base plate 17 .

The specific structure of the turning arm mechanism is that the lifting plate 26 is fixed on one end of the turning arm 12, in order to prevent the drilling tool 8 coming from the drilling tool frame 16 from directly entering the conveying arm 4, one end of the supporting leg hydraulic cylinder 11 is hinged with the support plate 15, and the other end Hinged with the baffle 20. When the supporting leg hydraulic cylinder 11 was lifted, the baffle plate 20 could slide in the track, stop sliding after reaching the stopper 19 position, and then drive the turning arm 12 to turn around the hinge point fixed on the catwalk base 14 . This makes it possible for the drilling tool 8 to reach the turning arm 12 from the drilling tool frame 16 before the outrigger hydraulic cylinder 11 is lifted. When the outrigger hydraulic cylinder 11 is lifted, the drilling tool 8 is prevented from continuing to reach the turning arm 12 .

The specific structure of the flap mechanism is that one end of the flap hydraulic cylinder 21 is hinged with the fixed point on the delivery arm 4 , the other end is hinged with an end of the flap 5 , and the other end of the flap 5 is hinged with the fixed point on the delivery arm 4 . In particular, the height of the side of the turnover plate 5 is relatively large, which can prevent the drilling tool 8 from rolling down when the drilling tool 8 is being transported, and replace the safety pin structure to play a role of safety protection.

The specific structure of the lifting mechanism is that one end of the lifting hydraulic cylinder 6 is hinged with a fixed point on the catwalk base 14, and the other end is hinged with the middle position of the rotating arm 7. One end of the rotating arm 7 is hinged with a fixed point on the catwalk base 14 , and the other end is hinged with an end of the delivery arm 4 . Two groups of flaps 5 are evenly installed in the middle of the delivery arm 4 . The tackle 3 is installed at the tail of the delivery arm 4 and can slide along the delivery arm 4 to push the drilling tool 8 out for a certain distance. Carrying arm 4 tail end is equipped with roller 1, and roller 1 can roll along the slideway 13 that is fixed on the catwalk base 14. In particular, the shape of the rotating arm 7 in the lifting mechanism is obtained through optimized design. The sharp corner of the rotating arm 7 is improved to a circular arc segment concentric with the hinge point. The two straight line segments connected with the arc segment transition tangentially to the arc segment. In the initial state, the long straight section is in contact with the bottom plate on the catwalk base 14; during the lifting process, the arc section is in contact with the bottom plate on the catwalk base 14; in the final state, the short straight section is in contact with the catwalk base 14. The bottom plate on the seat 14 is in contact. In this way, the running stability of the rotating arm 7 can be well improved, the control requirements on the lifting hydraulic cylinder can be reduced, and the possibility of instability accidents can also be reduced. In addition, there are different hinge positions on the rotating arm 7, which can adapt to different drilling floor heights.

The specific structure of the tackle mechanism is powered by a hydraulic motor 25, which drives the sprocket 23 through a speed reducer 24 to rotate, thereby driving the chain 22 to move, and the legs below the tackle 3 are fixed with the chain 22. Therefore, by controlling the positive and negative rotation and the rotating speed of the hydraulic motor 25, the moving direction and speed of the tackle 3 can be controlled. In addition, the cover 2 at the end of the delivery arm is used to protect the hydraulic pressure and transmission system in the pulley mechanism to avoid the intrusion of foreign impurities.

The working principle of the present invention is:

When the drilling tool is put on, at first the turning-out hydraulic cylinder 10 in the turning-out mechanism of the drilling tool frame lifts, and the drilling tool 8 rolls down on the turning arm 12 by the drilling tool frame 16 under the action of gravity. Then the supporting leg hydraulic cylinder 11 in the turning arm mechanism is lifted, and the turning plate hydraulic cylinder 21 in the turning plate mechanism is also lifted at the same time. 5, just make the single drilling tool 8 roll down on the delivery arm 4, the specific process is shown in Figure 2. After that, the lifting hydraulic cylinder 6 in the lifting mechanism is lifted to push the rotating arm 7 to rotate, so that the conveying arm 4 is lifted, and the drilling tool 8 is lifted to a certain height along with the conveying arm 4 . Finally, the hydraulic motor 25 in the pulley mechanism works, thereby driving the pulley 3 to push the drilling tool 8 to advance a certain distance along the delivery arm 4 to complete the drilling tool loading process.

When the drilling tool is lowered, at first the hydraulic motor 25 in the tackle mechanism works, the tackle 3 resets to the initial position, and the drilling tool 8 moves down a certain distance under the action of gravity. Then the lifting hydraulic cylinder 6 in the lifting mechanism is reset, and the rotating arm 7 is pulled to rotate, so that the delivery arm 4 is lowered, and the drilling tool 8 returns to a horizontal state along with the delivery arm 4 . Afterwards, the turnover hydraulic cylinder 21 in the turnover mechanism is lifted, and the drilling tool 8 is turned out onto the turnover arm 12 by the delivery arm 4 . Finally, the turning-out hydraulic cylinder 10 in the turning-out mechanism of the drilling tool frame is lifted, and the drilling tool 8 is moved from the turning arm 12 to the drilling tool frame 16 to complete the process of lowering the drilling tool.

The present invention has been described above by way of examples, but the present invention is not limited to the above specific embodiments, and any changes or modifications made based on the present invention fall within the scope of protection of the present invention.

Claims (6)

1. A lift-type hydraulic power catwalk system, characterized in that: it is mainly composed of five mechanisms: a drilling tool frame turning-out mechanism, a turning arm mechanism, a turning mechanism, a lifting mechanism and a pulley mechanism; The pull-out hydraulic cylinder (10) in the pull-out mechanism of the drill rack is hinged to the fixed point on the bottom plate (17), the other end is hinged to one end of the pull-out plate (18), and the other end of the pull-out plate (18) is connected to the support The frame (9) is hinged, and the support frame (9) is fixed on the bottom plate (17); The flap (5) in the flap mechanism has a segmented arc surface structure. 2. The lift-type hydraulic power catwalk system according to claim 1, characterized in that: the drilling tool frame pull-out mechanism is used to move the drilling tool between the drilling tool frame (16) and the turning arm (12), The drilling frame (16) and the turning-out mechanism of the drilling frame adopt a symmetrical arrangement on both sides. 3. The lifting hydraulic power catwalk system according to claim 1, characterized in that: when the outrigger hydraulic cylinder (11) in the turning arm mechanism is lifted, the baffle (20) can slide in the track, and the track The upper part has a stopper (19) to limit the position. 4. The lifting hydraulic power catwalk system according to claim 1, characterized in that: the turning arm mechanism has a lifting plate (26) that restricts the movement of the drilling tool (8). 5. The lifting hydraulic power catwalk system according to claim 1, characterized in that: the flap (5) in the flap mechanism has a certain side height. 6. The lifting hydraulic power catwalk system according to claim 1, characterized in that: the right angle part of the rotating arm (7) in the lifting mechanism is improved to a circular arc segment concentric with the hinge point, and at the same time A tangent transition between two straight line segments joined by segments.