CN203905851U - Lift-type power catwalk - Google Patents

Abstract

The utility model discloses a lifting type power catwalk, which comprises a catwalk body, a lifting mechanism, a hydraulic mechanism and an electric control mechanism. The structure of the catwalk body is as follows, including a base, and a pushing device is fixedly arranged at the inner end of the upper surface of the base. And the lifting platform, the upper surface of the base is equipped with a pulley, the pulley is connected to the driving sprocket assembly through the passive sprocket assembly, and the outer section of the upper surface of the base is equipped with a kick-out mechanism and a tilting mechanism; the lifting mechanism is set on In the inner cavity of the base. The device of the utility model can effectively reduce the working intensity of personnel and improve the efficiency of drill string processing. The whole system adopts electro-hydraulic control, and the hydraulic mechanism adopts a hydraulic lock design, which can maintain the current state of the mechanism when the system loses pressure, which is safe and reliable.

Description

A lifting power catwalk

technical field

The utility model belongs to the technical field of oil drilling equipment, in particular to a lifting type power catwalk.

Background technique

The drill string conveying device of existing oil drilling rig basically all is to adopt ground catwalk and ramp, relies on the drill string on ground (drill floor surface) to be delivered to drill floor surface (ground) by manual in mechanical mode. The deficiencies that this operation exists are: the one, the worker's labor intensity is big, the 2nd, there is serious potential safety hazard, the 3rd, work efficiency is lower. Although there have been relevant power catwalks with a higher level of automation now, their complex structure, heavy weight, and higher manufacturing costs affect popularization and use, and normal drilling operations are affected when the power catwalk breaks down.

Utility model content

The purpose of the utility model is to provide a lifting type power catwalk, which solves the problems of the existing power catwalk such as complicated structure, high manufacturing cost, and normal drilling operation being affected when a fault occurs.

The technical solution adopted by the utility model is: a lifting type power catwalk, including a catwalk body, a lifting mechanism, a hydraulic mechanism and an electric control mechanism,

The structure of the catwalk body is as follows: including the base, the inner end of the upper surface of the base is fixed with a moving device and a lifting platform, and the upper surface of the base is movable with a pulley, and the pulley is connected to the driving sprocket assembly through the passive sprocket assembly. The outer section of the surface is equipped with a kick-out mechanism and a tilting mechanism; the lifting mechanism is arranged in the cavity of the inner section of the base.

The lifting type power catwalk of the utility model is also characterized in that:

The structure of the lifting mechanism includes a lifting bracket, the upper end of the tail of the lifting bracket is hinged to the base, the lower end of the tail of the lifting bracket is connected to the lifting cylinder, and the front end of the lifting bracket is provided with supporting clamps and guide rollers.

The pushing device comprises a pushing oil cylinder, a pushing arm and a bracket, the bracket is fixedly connected with the base, and both ends of the pushing oil cylinder are respectively hinged with the bracket and the pushing arm through pins.

The pushing cylinder of the pushing device, the lifting cylinder of the lifting platform, the lifting cylinder and the supporting clamp are all connected with the hydraulic mechanism; the hydraulic mechanism, the motor of the driving sprocket assembly, the kicking mechanism and the tilting mechanism are all connected with the electric control mechanism.

It also includes that a drill string mouse hole is arranged in the middle of the stand.

The beneficial effects of the utility model are: the manual intervention in the operation of sending the drill string and throwing the drill tool is reduced, which can effectively reduce the working intensity of the personnel and improve the efficiency of the drill string processing; the whole system adopts electro-hydraulic control, and the hydraulic mechanism adopts a hydraulic lock design, It can maintain the current state of the mechanism in the state of system pressure loss, which is safe and reliable.

Description of drawings

Fig. 1 is the overall assembly front view of the utility model;

Fig. 2 is the overall assembly top view of the utility model;

Fig. 3 is a front view of the structure of the lifting mechanism of the present invention;

Fig. 4 is a top view of the structure of the lifting mechanism of the present invention;

Fig. 5 is a side view of the structure of the lifting mechanism of the present invention;

Fig. 6 is a schematic diagram of the utility model when lifting the drill string;

Fig. 7 is the schematic diagram when the utility model sends the drill string to the mouth of the mouse hole;

Fig. 8 is a schematic diagram of the utility model sending the drill string to the mouse hole lifting mechanism and returning to the catwalk;

Fig. 9 is a schematic diagram of the utility model when the drill string is sent to the mouse hole and the drill string is placed vertically.

In the figure, 1. Catwalk body, 2. Lifting mechanism, 3. Hydraulic mechanism, 4. Electric control mechanism, 5. Base, 6. Pulley, 7. Lifting platform, 8. Pushing device, 9. Drive sprocket assembly Cheng, 10. passive sprocket assembly, 11. kick out mechanism, 12. tilt mechanism, 13. lifting bracket, 14. lifting cylinder, 15. supporting pliers, 16. guide roller.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

With reference to Fig. 1 and Fig. 2, the lifting type power catwalk structure that the utility model drilling repair machine is used, comprises catwalk body 1, lifting mechanism 2, hydraulic mechanism 3 and electric control mechanism 4.

The structure of the catwalk body 1 is to include a base 5, the inner end of the upper surface of the base 5 (towards the center of the wellhead) is fixedly provided with a pushing device 8 and a lifting platform 7, and the upper surface of the base 5 is movable with a pulley 6, and the pulley 6 passes through the passive chain. The wheel assembly 10 is in transmission connection with the drive sprocket assembly 9, and the outer section of the upper surface of the base 5 (the end away from the wellhead) is equipped with a kick-out mechanism 11 and a tilt mechanism 12;

Pushing device 8 comprises pushing oil cylinder, push arm, support, and support is fixedly connected with base 5, and both ends of pushing oil cylinder are respectively hinged with support and pushing arm by pin mode; On the lifting platform 7.

The kick-out mechanism 11 includes a kick-out oil cylinder, a lever, a pin shaft, an ear seat, etc., and the two ends of the kick-out oil cylinder are respectively hinged with the lever and the ear seat by means of a pin shaft; Push it onto the catwalk countertop.

The tilting mechanism 12 includes a tilting oil cylinder, a seesaw, a pin shaft, an ear seat, etc., and both ends of the tilting oil cylinder are respectively hinged with the seesaw plate and the ear seat through a pin shaft; its function is to push the drill string from the catwalk table to the pipe row. or push the drill string from the catwalk table to the V-shaped groove in the middle of the catwalk.

Referring to Fig. 3, Fig. 4, and Fig. 5, the lifting mechanism 2 is arranged in the cavity in the inner section of the base 5. The structure of the lifting mechanism 2 is that it includes a lifting bracket 13, and the upper end of the tail of the lifting bracket 13 is hinged with the base 5 to lift The lower end of the tail part of the support 13 is transmission-connected with the lifting cylinder 14, and the front end of the lifting support 13 is provided with a supporting pincer 15 and a guide roller 16. The lifting bracket 13 is hinged with the base 5 through the connection mode of the pin shaft and the lug plate, and the supporting clamp 15 and the lifting cylinder 14 are hinged with the lifting bracket 13 through the connection mode of the pin shaft and the lug plate.

The pushing oil cylinder of the pushing device 8, the lifting oil cylinder of the lifting platform 7, the lifting oil cylinder 14 and the supporting clamp 15 are all controlled and connected with the hydraulic mechanism 3 through hydraulic pipelines. The hydraulic mechanism 3 has a self-locking protection function, and can maintain the current state of the mechanism when the system loses pressure, which is safe and reliable.

The hydraulic mechanism 3 , the motor of the driving sprocket assembly 9 , the kick-out mechanism 11 and the tilting mechanism 12 are all connected with the electric control mechanism 4 under control. The electric control mechanism 4 adopts PLC control technology, and the hydraulic mechanism 3 adopts hydraulic proportional load sensitive control technology. The combination of the two ensures that the running speed is not affected by the load, and can realize precise adjustment and control of the power catwalk 1.

The new drill string conveying scheme of the utility model: a drill string (special) mouse hole is arranged in the middle of the stand platform, and the drill string passes through the catwalk body 1 from the bottom of the drilling rig base to drill the table surface through the special mouse hole in the middle of the stand stand. The lifting mechanism 2 and the pulley 6, the lifting platform 7, and the pushing device 8 in the catwalk body 1 are controlled by the hydraulic mechanism 3 and the electric control mechanism 4, and the drill string is sent from the catwalk to the stand platform through the bottom of the drill floor. The rat hole at the top drive or string handling tool for string operations.

In addition, when the utility model is installed on the drilling rig, the ramp of the original drilling rig is kept as a backup. When the device of the utility model fails to be repaired, the ramp of the original drilling rig can be used to go up and unload the drill string for normal drilling operations.

The working principle of the utility model is:

When sending the drill string, the kick-out mechanism 11 and the tilting mechanism 12 are hinged with the fixed lug plate on the base 5 by means of the lug plate, and the drill string from the pipe rack is rolled into the V-shaped groove of the base 5 through the action of the tilting mechanism 12. The motor of the active sprocket assembly 9 drives the block 6 to move through the passive sprocket assembly 10, and pushes the drill string to the base 5 near the wellhead; the supporting clamp 15 is closed to support the drill string, and the lifting cylinder 14 is stretched out to promote lifting The bracket 13 and the supporting tongs 15 rotate to lift the front end of the drill string, as shown in Figure 6; the tackle 6 continues to move toward the wellhead, and at the same time, the lifting cylinder 14 pushes the lifting bracket 13 and the supporting tongs 15 to continue rotating to lift the drill string. Under the joint control of the hydraulic mechanism 3 and the electric control mechanism 4, the upper end of the drill string is accurately sent to the hole of the vertical rat, see Fig. 7; the lifting cylinder 14 is retracted to drive the lifting bracket 13 and the supporting clamp 15 down to the base 5, see Fig. Fig. 8: The pulley 6 continues to move toward the wellhead, and the pushing device 8 pushes the lower end of the drill string to the lifting platform 7 at the front end of the catwalk through the action of the pushing cylinder, and finally adjusts the drill string to the iron driller or the iron driller through the lifting action of the lifting platform 7 Refer to Figure 9 for the working height of the top drive.

When unloading the drill string, the top drive lifting ring tilts forward, and the drill string is sent to the hole of the vertical rat, the lifting cylinder 14 stretches out to push the lifting bracket 13 and the supporting clamp 15 to lift upward, and the supporting clamp 15 holds the drill rod closed, The lifting cylinder 14 retracts the lifting bracket 13 and the supporting tongs 15 and lowers them slowly, while the tackle 6 moves to the far end of the wellhead to catch the drill string, and the top drive ring is removed; the lifting cylinder 14 retracts and pushes the lifting bracket 13 and the supporting tongs 15 Continue to lower, while the tackle 6 moves away from the wellhead end, and finally place the drill string horizontally in the V-shaped groove of the base 5; the tackle 6 continues to move away from the wellhead end, and clamps the joint of the drill string through the special clamping plate on the tackle. Drive the drill string to move, and send the drill string to the designated position of the base 5, the kick-out mechanism 11 kicks the drill string out of the V-shaped groove of the base 5, and the tilting mechanism 12 sends the drill string to the pipe rack.

When the utility model is installed, the original drilling rig ramp is reserved as a backup. When the utility model breaks down and is repaired, the original drilling rig ramp can be used to go up and unload the drill string to carry out normal drilling operations.

Claims (5)

1. a lifting type dynamic catwalk, is characterized in that: comprise cat road body (1), lifting mechanism (2), hydraulic mechanism (3) and electrical control mechanism (4) four module,

The structure of cat road body (1) is, comprise base (5), base (5) upper surface the inner is fixedly installed push unit (8) and lift platform (7), base (5) upper surface is movably set with coaster (6), coaster (6) is in transmission connection by passive sprocket assemblies (10) and drive sprocket assembly (9), and the outer section of base (5) upper surface is provided with kicks out of mechanism (11) and leaning device (12); Described lifting mechanism (2) is arranged in base (5) inner segment cavity.

2. lifting type dynamic catwalk according to claim 1, it is characterized in that: described lifting mechanism (2) structure is, comprise lifting bracket (13), lifting bracket (13) afterbody upper end and base (5) are hinged, lifting bracket (13) afterbody lower end and elevating ram (14) are in transmission connection, and lifting bracket (13) front end is provided with helps pincers (15) and guide roller (16).

3. lifting type dynamic catwalk according to claim 1 and 2, it is characterized in that: described push unit (8) comprises passes oil cylinder, push arm, support, support is fixedly connected with base (5), and the two ends of passing oil cylinder are all hinged with support and push arm respectively by bearing pin mode.

4. lifting type dynamic catwalk according to claim 3, is characterized in that: the passing oil cylinder of described push unit (8), the hoist cylinder of lift platform (7), elevating ram (14) and help pincers (15) all with hydraulic mechanism (3) control connection; The motor of hydraulic mechanism (3), drive sprocket assembly (9), kick out of mechanism (11) and leaning device (12) all with electrical control mechanism (4) control connection.

5. lifting type dynamic catwalk according to claim 4, is characterized in that: in the middle of being also included in thribble platform, be provided with drill string rat hole.