CN219281676U - Direct pushing catwalk device - Google Patents

Abstract

The utility model provides a direct-pushing catwalk device, which comprises a first conveying mechanism, a second conveying mechanism and a first driving piece, wherein the first conveying mechanism comprises a first conveying frame, a second conveying frame and a first driving piece, the second conveying frame is used for supporting a pipe column, and the second conveying frame is hinged with the first conveying frame; the second conveying mechanism comprises a ramp frame hinged with the first conveying frame and a turning plate assembly, wherein the turning plate assembly comprises a turning plate and a second driving piece; the first piston piece, it connects ramp frame and second carriage respectively and can promote the second carriage to dock with turning over the board, and the controller, wherein, first driving piece and second driving piece all are constructed and can form the joint with the tubular column, and the controller is constructed and can control first driving piece and second driving piece respectively to carry the tubular column through second carriage and turning over the board. The utility model not only can reduce the power requirement on the whole device, but also can reduce the power loss in the process of conveying the pipe column, thereby reducing the cost of construction operation.

Description

Direct pushing catwalk device

Technical Field

The utility model relates to the field of automation equipment matched with petroleum drilling rigs, in particular to a direct-pushing catwalk device.

Background

Catwalk apparatus is a tubing transport device that is capable of transporting tubing back and forth between a drilling platform and the ground. The catwalk device has the advantages of high reliability, strong adaptability, high conveying efficiency and the like, so that the catwalk device can frequently appear in the well operation. At present, the catwalk device in the prior art mainly utilizes a mechanical mechanism to lift the pipe tool to the upper end of the ramp of the drilling platform, thereby achieving the purpose of conveying the pipe tool.

CN103696710B discloses a device for lifting and lowering a drill rod, an oil pipe and other pipe strings of an uphole operation platform to convey the pipe string for uphole operation. The catwalk comprises a catwalk body and a drill feeding pulley, wherein a V-shaped slideway is arranged on the catwalk body, and the drill feeding pulley is arranged on the catwalk body and slides along the V-shaped slideway. A folding lifting support system is arranged below the catwalk body, the drill feeding pulley is provided with a driving mechanism, 1-4 grooves are formed in the catwalk body at intervals, conveying belt systems are arranged in the grooves, the conveying belt systems and the V-shaped slide rail are horizontally and vertically arranged, two ends of the conveying belt systems extend out from two sides of the catwalk body, and the conveying belt systems are linked with lifting cylinders fixed on the catwalk body.

The device can convey the pipe to the drilling platform in a lifting mode. The following problems remain. First, the device requires complete lifting of the tubing set before delivery can be performed. Therefore, the device has quite high power requirements and causes a great amount of power loss in the lifting process, thereby increasing the cost of construction operation. Secondly, the pipe is unstable in the ascending process, so that dangerous accidents caused by high-altitude falling of the pipe are extremely easy to occur.

Accordingly, it is desirable in the art to provide a direct push catwalk device to address the above-described problems.

Disclosure of Invention

The utility model aims to provide a direct-pushing catwalk device, which can be used for butting the free end of a second conveying frame with a turning plate through a first piston member, and controlling a first driving member and a second driving member to respectively convey a pipe column on the second conveying frame and the turning plate through a controller. Therefore, the power requirement on the whole device is reduced, the power loss in the process of conveying the pipe column is obviously reduced, and the cost of construction operation is further reduced. In addition, the utility model not only can effectively limit the pipe column moving on the second conveying frame through the receiving and sending claws, but also can effectively limit the pipe column moving on the turning plate through the turning plate and the protective net, so that the safety of the pipe column in forward/reverse conveying can be effectively ensured.

According to a first aspect of the present utility model there is provided a direct push catwalk apparatus comprising a first conveyor mechanism comprising a first carriage, a second carriage disposed within the first carriage for supporting a tubular string, and a first drive disposed on the second carriage, wherein a fixed end of the second carriage is hinged to a first end of the first carriage,

a second conveying mechanism comprising a ramp frame hinged with the second end of the first conveying frame and a flap assembly arranged on the ramp frame, wherein the flap assembly comprises a flap and a second driving piece arranged on the flap,

a first piston member connecting the ramp frame and the second carriage together and urging the second carriage into abutment with the flap, and

a controller in communication with the first and second drive members, respectively,

wherein the first drive member and the second drive member are each configured to be engageable with the tubular string,

the controller is configured to control the first and second drives, respectively, to transport the tubular string through the second carriage and the flap.

In one embodiment, the controller is configured to:

when the pipe column is conveyed in the forward direction, the first driving piece can be controlled to move to the joint of the second conveying frame and the turning plate so as to enable the pipe column to be completely abutted against the turning plate, and therefore the pipe column is conveyed to the outside through the second driving piece;

when the pipe column is reversely conveyed, the second driving piece can be controlled to move to the joint of the turning plate and the second conveying frame, so that the pipe column is received by the first driving piece and conveyed to the position of being completely abutted against the second conveying frame.

In one embodiment, the first conveying mechanism further comprises a pair of tube turning members disposed on the second conveying frame, the tube turning members comprising a guide frame, a lifting plate disposed at a top end of the guide frame, and a third piston member disposed within the guide frame, wherein the third piston member is configured to move the lifting plate in a vertical direction to bring the tube string into engagement with the first driving member when the tube string is conveyed in a forward direction.

In one embodiment, the lift plate includes a first lift plate portion configured as a V-shape, and a second lift plate portion in the shape of a flat plate extending radially outward from both sides of the first lift plate portion.

In one embodiment, the first delivery mechanism further comprises a lifting assembly comprising a fixed square steel disposed on the second carriage, a second piston member disposed within the fixed square steel, and a rolling member fixedly coupled to a free end of the second piston member for supporting the tubular string,

wherein the second piston member is configured to be able to urge the rolling member in a vertical direction to tilt the pipe string and partially abut against the flap.

In one embodiment, the flap member is closer to the fixed end of the second carriage than the lift assembly.

In one embodiment, the flap is hinged to an end of the ramp frame remote from the first carriage.

In one embodiment, an included angle of 50 degrees is formed between the ramp frame and the first conveying frame; an included angle of 0 to 13 degrees is formed between the second conveying frame and the first conveying frame.

In one embodiment, the direct-push catwalk apparatus further comprises a pick-up finger disposed at a top end of the first carriage for limiting a horizontal position of the tubular string, and a base leg disposed at a bottom end of the first carriage.

Compared with the prior art, the utility model has the advantages that: according to the utility model, the free end of the second conveying frame can be in butt joint with the turning plate through the first piston piece, and the first driving piece and the second driving piece are controlled by the controller to convey the pipe column on the second conveying frame and the turning plate respectively. By the mode, the power requirement on the whole device is reduced, the power loss in the process of conveying the pipe column is obviously reduced, and the cost of construction operation is further reduced. In addition, the automatic conveying device can realize automatic conveying of the pipe column, so that direct contact with the pipe column is effectively avoided, and labor output cost is reduced. In addition, the utility model not only can effectively limit the pipe column moving on the second conveying frame through the receiving and sending claws, but also can effectively limit the pipe column moving on the turning plate through the turning plate and the protective net, so that the safety of the pipe column in forward/reverse conveying can be effectively ensured.

Drawings

The utility model will be described in detail below with reference to the attached drawing figures, wherein:

fig. 1 is a schematic view of a lowered state of a straight-pushing catwalk device according to the present utility model;

FIG. 2 is a schematic view of the lifting state of the straight-pushing catwalk device according to the present utility model;

fig. 3 shows the structure of the direct-push catwalk device according to the present utility model, in which the flap is in a tilted state;

fig. 4 is a top view of a direct push catwalk apparatus according to the present utility model;

fig. 5 is a schematic structural view of a pipe turning member in the straight-pushing catwalk device according to the present utility model;

fig. 6 is a schematic structural view of a lifting assembly in a direct-push catwalk apparatus according to the present utility model.

In the drawings, like parts are designated with like reference numerals. The figures are not drawn to scale.

Detailed Description

In order to make the technical solution and advantages of the present utility model more apparent, exemplary embodiments of the present utility model will be described in further detail below with reference to the accompanying drawings. It will be apparent that the described embodiments are only some of the embodiments of the present utility model and are not exhaustive of all embodiments. And embodiments of the utility model and features of the embodiments may be combined with each other without conflict.

The utility model will be further described with reference to the accompanying drawings.

Fig. 1 is a schematic view of a straight-pushing catwalk device 100 according to the present utility model in a lowered state.

As shown in fig. 1, according to a first aspect of the present utility model, there is provided a direct push catwalk apparatus 100 including a first conveying mechanism 1. The first conveyor 1 comprises a first carriage 11, a second carriage 12 and a first drive 13. The first carriage 11 is a main body structure of the straight-pushing catwalk device 100, so that the second carriage 12 can be effectively supported. The second carriage 12 is provided inside the first carriage 11 so as to function as a housing and support for a pipe string (not shown in the drawings). The first driving member 13 is disposed on the second carriage 12 so as to be capable of driving the tubular string to move axially on the second carriage 12, thereby facilitating subsequent tubular string conveying operations.

Preferably, the fixed end of the second carriage 12 is hinged to the first end of the first carriage 11. The free end of the second carriage 12 can thus be lifted by the first piston element 4 (described below) and can be brought into abutment with the flap 31 (described below), so that the purpose of transporting the tubular string is achieved under the cooperation of the second carriage 12 and the first drive element 13. The contents of which are described below.

According to the present utility model, as shown in fig. 1, the direct-push catwalk apparatus 100 further includes a second conveying mechanism 2. The second conveyor 2 comprises a ramp frame 21 and a flap assembly 3. Wherein the ramp frame 21 is hinged to a first end of the first carriage 11 and the flap assembly 3 is mounted on the ramp frame 21. Preferably, the ramp 21 is angled with respect to the first carriage 11 to ensure that the second drive 32 (described below) is able to smoothly interface with the first drive 13 when the second carriage 12 interfaces with the flap 31, thereby facilitating transport of a tubular string onto the flap 31 (described below) of the flap assembly 3.

Fig. 3 shows the structure of the direct-push catwalk device 100 according to the present utility model, in which the flap 31 is in a tilted state.

In one embodiment, as shown in fig. 3, the flap assembly 3 includes a flap 31 disposed on the ramp frame 21. Preferably, the flap 31 is hinged to the end of the ramp frame 21 remote from the first carriage 11, so that the flap 31 can be more easily rotated with the hinged end as the origin, thereby enabling the flap 31 to have the ability to convey the pipe string in the forward direction or in the reverse direction.

In one embodiment, as shown in fig. 3, the flap assembly 3 includes a second drive 32. The second driving member 32 is disposed on the turning plate 31, and the second driving member 32 on the turning plate 31 and the first driving member 13 on the second carriage 12 can be effectively matched to achieve the purpose of conveying the pipe column when the second carriage 12 is in butt joint with the turning plate 31. The contents of which are described below.

Fig. 2 is a schematic diagram of the lifted state of the straight-pushing catwalk device 100 according to the present utility model.

According to the utility model, as shown in fig. 1 and 2, the direct-push catwalk device 100 further comprises a first piston element 4 connecting the second carriage 12 with the flap 31. The first piston member 4 is configured to enable the second carriage 12 to interface with the flap 31 or to enable the second carriage 12 to be reset into the first carriage 11 for subsequent pipe string transport operations. In this way, the push-through catwalk device 100 is enabled with good flexibility and operability.

According to the present utility model, the direct push catwalk apparatus 100 further includes a controller (not shown) in communication with the first and second driving members 13 and 32, respectively. Therefore, the straight-pushing catwalk device 100 can control the position of the first driving element 13 on the second conveying frame 12 and the position of the second driving element 32 on the turning plate 31 respectively through the controller, so as to achieve the purpose of conveying the pipe column, and therefore, the pipe column conveying efficiency and the safety of the straight-pushing catwalk device 100 are obviously improved.

In a preferred embodiment, the first driving member 13 and the second driving member 32 can form a firm engagement relationship with the pipe column, so as to ensure that the pipe column can travel on the second conveying frame 12 or the turning plate 31 in a stable posture, and further avoid safety problems caused by high-altitude falling of the pipe. Preferably, the second drive member 32 has a hook-like structure (not shown in the drawings) so as to be able to be brought into stable engagement with the pipe string through the ramp frame 21.

Fig. 4 is a top view of a push-through catwalk apparatus 100 according to the present utility model. Fig. 6 is a schematic structural view of the lifting assembly 5 in the direct-push catwalk apparatus 100 according to the present utility model

According to the utility model, as shown in fig. 4 and 5, the first conveyor 1 further comprises a lifting assembly 5. The lifting assembly 5 comprises a fixed square steel 51, a second piston member 52 and a rolling member 53. Wherein the fixed square steel 51 is mounted on the second carriage 12 so as to effectively support the overall structure of the lifting assembly 5. The second piston member 52 is disposed in the fixed square steel 51 and fixedly connected with the rolling member 53, thereby enabling the lifting of the column portion. Preferably, the rolling member 53 is fixedly coupled to the top end of the second piston member 52 by a bracket 54 to allow the passage of the tubular string to facilitate subsequent delivery operations.

According to one embodiment of the utility model, the second piston element 52 is configured to cause the rolling element 53 to move in a vertical direction so as to tilt the tubular string and partially rest against the flap 31. Specifically, the second piston member 52 is movable in the vertical direction, thereby causing the front end of the pipe string to tilt up. In this way, the front end of the pipe string can first contact the flap 31 under the pushing action of the first driving member 13, and the pipe string can gradually and completely abut against the flap 31 under the continuous pushing action of the first driving member 13.

In one embodiment, as shown in fig. 4, the first conveyor 1 further comprises a pair of tube turnover members 6. Both of the pipe turners 6 are provided on the second carriage 12, and the pipe turners 6 are configured to be movable in the vertical direction to bring the pipe string into engagement with the first driver 13. In particular, the pipe turning member 6 is movable in a vertical direction to thereby cause lifting of the pipe string in whole or in part, whereby a stable connection is established between the first driving member 13 and the pipe string.

In a particular embodiment, two flaps 6 are provided on either side of the second carriage 12, respectively, so as to enable selective lifting of the tubular string. For example, only one of the pipe turning pieces 6 can be controlled to lift one side of the pipe column, and two pipe turning pieces 6 can be simultaneously controlled to lift the whole pipe column.

In a preferred embodiment, the flap member 6 is closer to the fixed end of the second carriage 12 than the lifting assembly 5. Therefore, the catwalk device 100 can lift the whole or part of the pipe column through the pipe turning piece 6, so as to promote the first driving piece 13 to form a stable connection relationship with the pipe column; the front end of the pipe column is tilted up by the second piston member 52, so that the pipe column is gradually and completely abutted against the turning plate 31 under the pushing action of the first driving member 13.

In one embodiment, the flap 31 is hinged to the end of the ramp frame 21 remote from the first carriage 11. Accordingly, the flap 31 is configured to be rotatable with the hinged end as an origin, so that the pipe string can be more easily transported to a position suitable for hanging an elevator or received and reset onto the ramp frame 21.

In one embodiment, during forward transport of the pipe string (the direction of movement of the pipe string is from the second carriage 12 to the flap 31), the controller is configured to control the movement of the first driver 13 to the point where the second carriage 12 interfaces with the flap 31 to urge the pipe string fully against the flap 31 to transport the pipe string to the outside via the second driver 32.

According to one embodiment of the present utility model, first, the whole or part of the string is lifted by turning the pipe member 6, so that a stable connection relationship is formed between the string and the first driving member 13. The second carriage 12 is then controlled by the first piston member 4 to interface with the flap 31. The front end of the pipe string is then raised by the second piston member 52 of the lifting assembly 5, and the first drive member 13 is then moved to the interface of the second carriage 12 and the flap 31.

The tubular string can thus gradually come to rest completely against the flap 31 under the pushing action of the first piston element 4. Thereafter, the second driver 32 interfaces with the first driver 31 such that a stable connection is established between the tubular string and the second driver 32. Thereafter, the flap 31 rotates with the hinge end as the origin. Thus, the second drive 32 is able to transport the tubular string to a position suitable for hanging an elevator, thereby effecting forward (up) transport of the tubular string.

In one embodiment, upon reverse conveyance of the pipe string (the direction of movement of the pipe string is from the flap 31 to the second carriage 12), the controller is configured to control the second drive 32 to move to the point where the flap 31 interfaces with the second carriage 12, thereby receiving the pipe string via the first drive 13 and transporting the pipe string to a position fully against the second carriage 12.

According to one embodiment of the utility model, first, the flap 31 is tilted and receives the pipe string. At this time, a stable connection is formed between the rear end of the pipe string and the second driver 32 (a specific process is described below). The flap 31 is then controlled by the first piston element 4 to interface with the second carriage 12. Thereafter, the flap 31 is reset, and then the second driving member 32 moves to the junction of the flap 31 and the second carriage 12. The first drive member 13 then interfaces with the second drive member 32 and the tubular string is moved by the drive of the first drive member 13 progressively fully against the second carrier 12. Finally, the return of the second carriage 12 into the first carriage 11 is controlled by the first piston member 4, so that the reverse (downward) transport of the pipe string is achieved.

At present, the catwalk device in the prior art generally realizes the purpose of conveying by fully lifting the pipe tool, so that the device has quite high power requirement and can cause a great deal of power loss in the lifting process, thereby increasing the cost of construction operation.

In contrast to the prior art described above, the present utility model requires only lifting the free end of the second carriage 12 by the first piston member 4, thereby facilitating an effective docking of the second carriage 12 with the flap 31. The tubular string is thereby able to perform forward/reverse conveyance by the combined action of the first and second drive members 13, 32. In this way, the power loss of the direct-push catwalk device 100 is effectively reduced, and the cost of construction operation is further reduced. In addition, the first driving piece 13 and the second driving piece 32 can be remotely controlled by the controller, so that automatic conveying of the pipe column is realized, and further, the working efficiency of the direct-pushing catwalk device 100 is effectively improved.

Fig. 5 is a schematic structural view of the turning pipe member 6 in the straight-pushing catwalk device 100 according to the present utility model.

According to the utility model, as shown in fig. 5, the tube-turning piece 6 comprises a guide frame 61, a lifting plate 63 and a third piston piece 62. The guide frame 61 is provided on the second carriage 12. The lifting plate 63 is installed at the top end of the guide frame 61 and can effectively support the pipe string. The third piston member 62 is disposed in the guide frame 61, and the top end of the third piston member 62 is fixedly connected to the lifting plate 63.

According to one embodiment of the utility model, the third piston member 62 is configured to move the lifting plate 63 in a vertical direction to bring the pipe string into engagement with the first drive member 13 as the pipe string is being conveyed.

In one embodiment, as shown in FIG. 5, the lift plate 63 includes a first lift plate portion 631 configured as a V-shape, and a second lift plate portion 632 in the form of a flat plate extending radially outward from both sides of the first lift plate portion 631. In this way, the pipe string can be more fully attached to the first lifting plate portion 631 during the conveying process, so as to ensure the safety of the pipe string during the conveying process.

In one embodiment, the direct push catwalk apparatus 100 includes protective screens (not shown in the drawings) disposed on both sides of the ramp frame 21. The protection net is fixedly connected with the second lifting plate portion 632, so that the radial position of the pipe string can be effectively limited. Therefore, the safety coefficient of the pipe column in the conveying process is improved, and the straight-pushing catwalk device 100 meets the requirement of safe production operation more easily.

In one embodiment, the ramp frame 21 forms a 50 ° angle with the first carriage 11. The second carriage 12 forms an angle of 0 to 13 with the first carriage 11. Thus, the tubular string is made easier to move on the second carriage 12 by the first drive 13 and on the flap 31 by the second drive 32. Compared with the prior art, the utility model obviously reduces the power requirement and loss. In addition, the utility model also reduces the cost of construction operation and improves the working efficiency of pipe column conveying.

In one embodiment, as shown in fig. 4, the direct push catwalk device further comprises a pick-up finger 7. Wherein, the pick-up claw 7 is arranged at the top end of the first conveying frame 11, thereby being capable of effectively limiting the horizontal position of the pipe column by matching with the first conveying frame 11. Therefore, the pipe column can be well protected during forward/reverse conveying, so that the safety of the pipe column in the conveying process is effectively improved, and the possibility of dangerous accidents is further reduced.

In one embodiment, as shown in fig. 4, the direct push catwalk device further comprises a base leg 8. The base leg 8 is provided at the bottom end of the first carriage 11. It will be readily appreciated that the base legs 8 carry the weight of the entire push catwalk apparatus 100, thereby ensuring the stability of the apparatus as a whole when the pipe string is being conveyed in both forward and reverse directions.

According to a second aspect of the present utility model there is provided a method of transporting a tubular string using a straight push catwalk apparatus as described above, comprising at least one of a forward transport step and a reverse transport step.

The forward conveying step and the reverse conveying step are described below, respectively.

The forward conveying step comprises the following steps:

first, the pipe string is placed on the second carriage 12 and lifted in whole or in part by the pipe turning member 6, so that a stable connection relationship with the first driving member 13 can be formed.

Then, the second carriage 12 is docked with the flap 31 by the first piston member 4;

the tubular string is then partially brought into abutment against the flap 31 by lifting the assembly 5 and the first drive 13; the first driving piece 13 is controlled by the controller to move to the joint of the second conveying frame 12 and the turning plate 31 so that the pipe column is completely abutted on the turning plate 31.

Specifically, the front end of the pipe string is raised by the second piston member 52 of the lifting assembly 5, and then the first driving member 13 moves to the junction of the second carriage 12 and the flap 31. The tubular string can thus gradually come to rest completely against the flap 31 under the pushing action of the first piston element 4.

Then, the controller controls the second driving member 32 to interface with the first driving member 13, so that a stable connection relationship is formed between the pipe string and the second driving member 32.

Finally, the string is transported to the outside by the second driving member 32.

Specifically, the flap 31 rotates with the hinge end as the origin. Thus, the second drive 32 is able to transport the tubular string to a position suitable for hanging an elevator, thereby effecting forward (up) transport of the tubular string.

The reverse conveying step comprises the following steps:

first, the flap 31 is tilted to receive the pipe string, and is tilted by the lift plate 63 to form a stable connection relationship between the second driving piece 32 and the pipe string.

The second carriage 12 is then docked with the flap 31 by the first piston element 4.

Thereafter, the flap 31 is reset, and then the second driving member 32 moves to the junction of the flap 31 and the second carriage 12.

Then, the controller controls the first driving member 13 and the second driving member 32 to be connected, so that a stable connection relationship is formed between the first driving member 13 and the tubular column.

The tubular string is then moved by the drive of the first drive member 13 gradually and completely against the second carriage 12.

Finally, the return of the second carriage 12 into the first carriage 11 is controlled by the first piston member 4, so that the reverse (downward) transport of the pipe string is achieved.

The utility model provides a direct-pushing catwalk device 100, which can be used for butting a second conveying frame 12 with a turning plate 31 through a first piston member 4 and controlling a first driving member 13 and a second driving member 32 to convey a pipe column on the second conveying frame 12 or the turning plate 31 through a controller. By the mode, the power requirement on the whole device is reduced, and the power loss in the process of conveying the pipe column is obviously reduced, so that the cost of construction operation is effectively reduced. In addition, the automatic conveying device can realize automatic conveying of the pipe column, so that direct contact with the pipe column is effectively avoided, and labor output cost is reduced. In addition, the utility model not only has an effective limiting effect on the pipe column moving on the second conveying frame 12 through the pick-up claw 7, but also has an effective limiting effect on the pipe column moving on the turning plate 31 through the turning plate 31 and the protective net, so that the safety of the pipe column in forward/reverse conveying can be effectively ensured.

The above is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto. Modifications and variations may readily be made by those skilled in the art within the scope of the present disclosure, and such modifications and variations are intended to be included within the scope of the present utility model. Therefore, the protection scope of the utility model is subject to the protection scope of the claims.

Claims (9)

1. A direct push catwalk apparatus comprising:

a first conveying mechanism (1) comprising a first conveying frame (11), a second conveying frame (12) which is arranged in the first conveying frame (11) and is used for supporting a pipe column, and a first driving piece (13) which is arranged on the second conveying frame (12), wherein the fixed end of the second conveying frame (12) is hinged with the first end of the first conveying frame (11),

a second conveying mechanism (2) comprising a ramp frame (21) hinged with the second end of the first conveying frame (11), and a flap assembly (3) arranged on the ramp frame (21), wherein the flap assembly (3) comprises a flap (31) and a second driving piece (32) arranged on the flap (31),

a first piston member (4) connecting the ramp frame (21) and the second carriage (12) together and being capable of causing the second carriage (12) to interface with the flap (31), and

a controller in communication with the first driving member (13) and the second driving member (32), respectively,

wherein the first driver (13) and the second driver (32) are each configured to be engageable with the tubular string,

the controller is configured to control the first drive (13) and the second drive (32) respectively to transport the tubular string through the second carriage (12) and the flap (31).

2. The push-through catwalk apparatus of claim 1, wherein the controller is configured to:

when the pipe column is conveyed in the forward direction, the first driving piece (13) can be controlled to move to the joint of the second conveying frame (12) and the turning plate (31) so as to enable the pipe column to be completely abutted on the turning plate (31), and the pipe column is conveyed to the outside through the second driving piece (32);

when the pipe column is reversely conveyed, the second driving piece (32) can be controlled to move to the joint of the turning plate (31) and the second conveying frame (12), so that the pipe column is received by the first driving piece (13) and conveyed to the position of being completely abutted against the second conveying frame (12).

3. The direct-push catwalk apparatus according to claim 2, wherein the first conveying mechanism (1) further comprises a pair of tube-turning pieces (6) provided on the second conveying frame (12), the tube-turning pieces (6) comprising a guide frame (61), a lifting plate (63) provided at a top end of the guide frame (61), and a third piston member (62) provided inside the guide frame (61), wherein the third piston member (62) is configured to be able to move the lifting plate (63) in a vertical direction to bring the column into engagement with the first driving member (13) when the column is conveyed forward.

4. A push-through catwalk apparatus as claimed in claim 3, wherein the lifting plate (63) includes a first lifting plate portion (631) configured in a V shape, and a second lifting plate portion (632) in a flat plate shape extending radially outwardly from both sides of the first lifting plate portion (631).

5. The direct-push catwalk apparatus according to claim 4, wherein the first conveyor mechanism (1) further comprises a lifting assembly (5), the lifting assembly (5) comprising a fixed square steel (51) provided on the second conveyor frame (12), a second piston member (52) provided in the fixed square steel (51), and a rolling member (53) fixedly connected to a free end of the second piston member (52) and adapted to support the pipe string,

wherein the second piston member (52) is configured to be able to cause the rolling member (53) to move in a vertical direction to tilt the pipe string and partially rest against the flap (31).

6. The direct-push catwalk apparatus according to claim 5, characterized in that the turner (6) is closer to the fixed end of the second carriage (12) than the lifting assembly (5).

7. The direct-push catwalk apparatus according to claim 6, characterized in that the flap (31) is hinged to an end of the ramp frame (21) remote from the first carriage (11).

8. The direct-push catwalk device according to claim 7, characterized in that the ramp frame (21) forms an angle of 50 ° with the first carriage (11); an included angle of 0 to 13 degrees is formed between the second conveying frame (12) and the first conveying frame (11).

9. The direct-push catwalk apparatus according to claim 8, characterized in that it further comprises a pick-up grip (7) provided at the top end of the first carriage (11) for limiting the horizontal position of the tubular string, and a base leg (8) provided at the bottom end of the first carriage (11).

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